Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
AN ELECTRIC AND HAND OPERATED PUMP SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/167065
Kind Code:
A1
Abstract:
An electric and hand operated pump system configured to lift ground water by means of a submersible reciprocating pump, which operates by electric energy and hand manually by both rotary and oscillating mode, said system comprising: a submersible reciprocating pump [18], configured to lift water, said pump [18] comprising a reciprocating pump rod [16], said submersible pump [18] being connected with at least a pair of cranks [6 & 6a], each of said cranks connected to corresponding flywheels [1 & 1a], each of said flywheels [1 & 1a] have at least one counterweight [4 & 4a], each of said cranks [6 & 6a] being connected to a motor [3] such that when motor [3] starts, said pump [18] is configured to pump out fluid (water).

Inventors:
VERMA, Anurag (Duplex No. 21, Pioneer Green City Hanumant Vihar,,Singhpur Kachhar, Kanpur 7, Uttar Pradesh, 208017, IN)
Application Number:
IN2019/050152
Publication Date:
September 06, 2019
Filing Date:
February 26, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
VERMA, Anurag (Duplex No. 21, Pioneer Green City Hanumant Vihar,,Singhpur Kachhar, Kanpur 7, Uttar Pradesh, 208017, IN)
International Classes:
F04B47/06; F04B9/14; F04B17/03
Foreign References:
US6210125B12001-04-03
US20080080991A12008-04-03
US4475872A1984-10-09
CN2611625Y2004-04-14
Attorney, Agent or Firm:
TANNA, Chirag (Ink Idee, B-72, 62, 73 Pereira Nagar No. 7,Khopat, Thane, Thane 1 Maharashtra, 400 601, IN)
Download PDF:
Claims:
CLAIMS,

1. An electric and hand operated pump system configured to lift ground water by means of a submersible reciprocating pump, which operates by electric energy and hand manually by both rotary and oscillating mode, said system comprising:

- a submersible reciprocating pump [18], configured to lift water, said pump [18] comprising a reciprocating pump rod [16], said submersible pump [18] being connected with at least a pair of cranks [6 & 6a], each of said cranks connected to corresponding flywheels [1 & la], each of said flywheels [1 & la] have at least one counterweight [4 & 4a], each of said cranks [6 & 6a] being connected to a motor [3] such that when motor [3] starts, said pump [18] is configured to pump out fluid (water).

2. The electric and hand operated pump system as claimed in claim 2, said system comprising:

- a water receiver tank [12], with a bottom flange [52] and a top flange

[51], said water receiver tank [12] configured to receive water;

- a reciprocating pump rod [16] transfers reciprocating motion to a submersible reciprocating pump [18] configured to lift water through a riser pipe [15] to said water receiver tank [12], said top flange [51] equipped with a seal [13] around said reciprocating pump rod [16] so that water gets pressurized insider said water receiver tank [12] and transfers to an overhead tank [22] through a transfer pipe [21];

- a pair of cranks [6 & 6a], comprising an operative left hand side crank

[6] and an operative right hand side crank [6a], connected to corresponding flywheels [1 & la], on either side;

- a coupler [26] connecting a connecting rod [7] to a pump rod [16] inside a main riser pipe [15] connected with said reciprocating pump [18] at its one end and to said bottom flange [52], in order to convert rotary motion of said pair of cranks [6 & 6a] into reciprocating motion of said reciprocating pump rod [16];

- a set of flywheels [1 & la] comprising an operative right hand side flywheel [la] and an operative left hand side flywheel [1], each of said flywheels being connected with a corresponding counterweight [4 & 4a], said operative left hand side flywheel [1] being provided with a retractable handle [5]; and

- a set of shafts [27 & 27 a] comprising an operative left hand side shaft

[27] and an operative right hand side shaft [27a], said shaft [27] being connected to said operative left hand side flywheel [1], said shaft [27] being mechanically linked with a pair of cranks [6 & 6a] and said set of flywheels [1 & la] such that as shaft is angularly displaced, said flywheels [1& la] and said cranks [6 & 6a] are, simultaneously, angularly displaced.

3. The electric and hand operated pump system as claimed in claim 2 wherein, the water receiver tank [12] and a pump crank case [9], consisting of said pair of cranks [6 & 6a], said connecting rod [7], and said coupler [26], are situated on a pump stand [14]

4. The electric and hand operated pump system as claimed in claim 2 wherein, the water receiver tank [12] is coaxial with the pump stand [14].

5. The electric and hand operated pump system as claimed in claim 2 wherein, said system comprising a pump crank case [9] consisting of said pair of cranks [6 & 6a], said connecting rod [7], and said coupler [26].

6. The electric and hand operated pump system as claimed in claim 2 wherein, said coupler [26] being connected with a pump rod [16] and said connecting rod [7] connecting said cranks [6 & 6a] to said pump rod [16].

7. The electric and hand operated pump system as claimed in claim 2 wherein, shafts [27] and [27a] are supported by bearing housings [8] and [8a] on either side of the pump crank case [9], consisting of said pair of cranks [6 & 6a], said connecting rod [7], and said coupler [26], respectively.

8. The electric and hand operated pump system as claimed in claim 2 wherein, the operative right hand side flywheel [la] is placed inside a flywheel casing [33].

9. The electric and hand operated pump system as claimed in claim 2 wherein, the operative right hand side flywheel [la] is placed inside a flywheel casing [33], said flywheel housing [33] is firmly tightened with the pump crank case [9] with fasteners [32].

10. The electric and hand operated pump system as claimed in claim 2 wherein, said first driver mechanism [2] is a first sprocket.

11. The electric and hand operated pump system as claimed in claim 2 wherein, said first driver mechanism [2] is a first gear.

12. The electric and hand operated pump system as claimed in claim 2 wherein, a second driver mechanism [34] on motor [3] transfers rotary motion to said first driver mechanism [2] through said driven mechanism [57]

13. The electric and hand operated pump system as claimed in claim 2 wherein, said driven mechanism [57] is a chain.

14. The electric and hand operated pump system as claimed in claim 2 wherein, said driven mechanism [57] is a second gear.

15. The electric and hand operated pump system as claimed in claim 2 wherein, a first sprocket [2] being connected to said drive [3] by means of a chain [57]

16. The electric and hand operated pump system as claimed in claim 2 wherein, a first gear [2] being connected to said drive [3] by means of a second gear [57]

17. The electric and hand operated pump system as claimed in claim 2 wherein, a second sprocket [34] on motor [3] transfers rotary motion to a first sprocket [2] through a chain [57].

18. The electric and hand operated pump system as claimed in claim 2 wherein, a first sprocket [2] further transmits rotary motion to said shaft [27]

19. The electric and hand operated pump system as claimed in claim 2 wherein, said shaft [27] being connected to said operative left hand side flywheel [1], said shaft [27] being mechanically linked with a pair of cranks [6 & 6a] and said set of flywheels [1 & la] by crank pin [35].

20. The electric and hand operated pump system as claimed in claim 2 wherein, a crank pin [35] connects with one end of said connecting rod [7] further connected with said coupler [26].

21. The electric and hand operated pump system as claimed in claim 2 wherein, a crank pin [35] connects with one end of said connecting rod [7] further connected with said coupler [26] by a coupler pin [30].

22. The electric and hand operated pump system as claimed in claim 2 wherein, a crank pin [35] connects with one end of another chain and its straightening mechanism [7] is further connected with said coupler [26] by a coupler pin [30].

23. The electric and hand operated pump system as claimed in claim 2 wherein, said one end of said riser pipe [15] is connected with said submersible reciprocating pump [18] and said other end is connected with said bottom flange [52] of said water receiver tank [12] by a pipe socket [53]

24. The electric and hand operated pump system as claimed in claim 2 wherein, said riser pipe [15] and said reciprocating pump [18] are kept inside a casing pipe [17].

25. The electric and hand operated pump system as claimed in claim 2 wherein, said pair of cranks [6 & 6a], comprising an operative left hand side crank [6] and an operative right hand side crank [6a], connected to corresponding flywheels [1 & la], on either side, by a set of shafts [27 &27a], respectively.

26. The electric and hand operated pump system as claimed in claim 2 wherein, said operative left hand side shaft [27] carrying a one-way bearing [28] which further carries a first driver mechanism [2] connected to a drive [3] by means of a driven mechanism [57].

27. The electric and hand operated pump system as claimed in claim 2 wherein, said transfer pipe [21] being provided with a self-closing spring loaded valve [19] to obtain water at ground level.

28. The electric and hand operated pump system as claimed in claim 2 wherein, said transfer pipe [21] being equipped with a non-re turning valve [20] to avoid excessive back pressure on said water receiver tank [12].

29. The electric and hand operated pump system as claimed in claim 2 wherein, said set of flywheels [1 & la] being located in a slotted [40] flywheel housing [10] such that when said handle [5] is placed between said slots [40], said pump operates in hand operating oscillating mode.

30. The electric and hand operated pump system as claimed in claim 2 wherein, said handle being kept on a clamp [35] during motor operating mode.

31. The electric and hand operated pump system as claimed in claim 2 wherein, said flywheel comprising ribs [39], each of said ribs being a radius of said flywheel, extending from centre hub of said flywheel to outer rim of said flywheel.

32. The electric and hand operated pump system as claimed in claim 2 wherein, said flywheel comprising ribs [39], each of said ribs being a radius of said flywheel, extending from centre hub of said flywheel to outer rim of said flywheel, characterised in that, a clamp [35] being located on one of said ribs, said clamp [35] further being used to hold said handle [5] for operating motor during motor operating mode.

33. The electric and hand operated pump system as claimed in claim 2 wherein, said flywheel comprising ribs [39], each of said ribs being a radius of said flywheel, extending from centre hub of said flywheel to outer rim of said flywheel, characterised in that, a clamp [35] being located on one of said ribs, said handle [5] being kept out of said clamp [35] during hand operating rotary mode.

34. The electric and hand operated pump system as claimed in claim 2 wherein, said flywheel comprising ribs [39], each of said ribs being a radius of said flywheel, extending from centre hub of said flywheel to outer rim of said flywheel, characterised in that, a clamp [35] being located on one of said ribs, said handle [5] being kept out from said clamp [35] and placed between slots [40] on said flywheel housing [10] during hand operating oscillating mode.

35. The electric and hand operated pump system as claimed in claim 2 wherein, said counterweight is a circular segment.

36. The electric and hand operated pump system as claimed in claim 2 wherein, a plurality of counterweights configured to be placed on both side of said flywheels to overcome torque produced by weight of said pump rod [16] and weight of water in said riser main [15].

37. The electric and hand operated pump system as claimed in claim 2 wherein, equal number of counterweights being placed on either side of a crank case, said number being correlative to depth of installation of reciprocating pump [18].

38. The electric and hand operated pump system as claimed in claim 2 wherein, said counterweights [4 & 4a] are located in a manner such that that centre of mass of said counterweight is diametrically opposite to the weight (weight of pump rod plus weight of water inside rise pipe) acting on said coupler pin [30] so that torque can be balanced during up and down movement of said pump rod [16].

39. The electric and hand operated pump system as claimed in claim 2 wherein, said counterweights [4 & 4a] are located in a manner such that that centre of mass of said counterweight is diametrically opposite to the weight (weight of pump rod plus weight of water inside rise pipe) acting on said coupler pin [30] so that torque can be balanced during up and down movement of said pump rod [16], characterised in that, said counterweight [4 & 4a] being located on corresponding ribs [39] of said flywheel [1 & la].

40. The electric and hand operated pump system as claimed in claim 2 wherein, an outer most counterweight [43] on said operative left hand side flywheel [1] is provided with a handle [5].

Description:
AN ELECTRIC AND HAND OPERATED PUMP SYSTEM

FIELD OF INVENTION:

This invention relates to the field of mechanical engineering.

Particularly, this invention relates to ground water supply systems.

Specifically, this invention relates to an electric and hand operated pump system.

BACKGROUND OF THE INVENTION:

Bore wells, with submersible pumps, provide for a very important ground water supply system. Similarly, hand operated submersible reciprocating pumps also provide for a prominent ground water supply system at various places.

Hand pumps have been very useful and popular equipment for transporting water to surface since decades. These pumps are simple in design, durable, and low maintenance and are widely used in rural areas of developing countries. There are various types of pumps available for lifting water from a clean ground water source. Most common type of ground water pump is a suction pump. In case of suction pumps, an oscillating or a reciprocating tool is situated above ground. These pumps cannot lift groundwater deeper than 7 metres because of their limitations in applying enough suction called net positive suction head (NPSH). This takes into account atmospheric pressure at sea level (1 atmosphere = 33.9 ft. of water at 4 °C) friction losses, minor seal leakage, and normal temperature range of groundwater. Intermediate depth pumps (direct action and bucket pumps) are appropriate for reaching groundwater to depths of 12 to 15 metres. Its handle is connected to a lifting mechanism that is submerged in the groundwater; so, NPSH is not an issue.

The direct action plunger pump operates by reciprocating motion of a PYC pipe (called the plunger pipe) inside a stationary PYC pipe (called the tail pipe). Both pipes reach the groundwater level and have check valves at their lower ends allowing water to enter but not exit.

Deep well pump types capable of reaching groundwater to depths of 45 metres include a rope pump (lift disk or chain and washer pump), a diaphragm pump, a progressive cavity pump (helical rotor pump), and a piston pump (lever- operated reciprocating action pump). A rope pump operates like a bucket pump, but instead of buckets on chain; it is made of a loop of rope with rubber washers along its length. As the windlass turns, the rope travels into the PVC pipe and the washers force water into the pipe and up to the point of discharge. This is an old pumping method that has been adapted and improved in recent years. It is now used not only in large diameter wells, but also in boreholes. The PVC riser pipe which carries the water up is one inch diameter, the washers fit closely inside without too much friction and a guide pipe of a larger diameter also fits in the borehole to guide the rope down into the water. Two-person rope pumps (with handles; so two people can turn the wheel) are used in Nicaragua to depths of 60 metres. A diaphragm pump uses an expandable diaphragm in the submerged pump cylinder to push water up and out of the rising main when pressure is increased by means of a mechanism such as a foot pedal. When the diaphragm air pressure is released, water enters the pump cylinder for the next cycle. Since, there is no up and down rod movement, it may be possible to use a diaphragm pump in crooked wells where other pumps might not work. A progressive cavity pump has a special shaped synthetic rubber lined cylinder (stator) fitting closely around a steel rotor that twists as the operator turns a crank or handle. As the rotor turns, it squeezes the water up and out of the cylinder which then flows up through the rising main to the surface. This provides continuous flow of water with continuous rotation and can be fit with a motor to provide water under pressure for a distribution system if desired. The piston pump operates similar to the traditional suction pump with the foot valve and piston submerged in the groundwater. A long rod connects the piston to a handle for operation.

There are some deep well pumps capable of reaching groundwater deeper than 45 metres. It is not unusual to have a hand pumps at these depths, but it takes more energy to operate and there are greater demands for robustness of pump and well casing parts. Special equipment may be required for extraction of deep pump parts for repair. A study has shown that“all hand pumps have more breakdowns with increasing depth and number of different users.” (Rural Water Systems). Oxfam developed a pump for depths of 80 metres by creating a hybrid of the Afridev and India Mark II handpump. It uses a PYC rising main that is supported from the bottom of the borehole instead of hanging it from the top. This prevents pipe stretch and reduces stress on the pipe and joints (Briscoe & McMurdie, 2001).

Manufacturers from various countries advertise very deep well pumps. The Mololift progressive cavity pump may be used to a depth of 60 metres. The India Mark IV piston pump is a modified Mark II that is promoted as being capable of reaching 90 metres. The Mark IV pump has an extra-long handle for increasing torque, a T bar so that two people may operate it at the same time, and counter weights placed on a long lever arm in order to assist in pushing the lever down to lift the heavy column of water from these depths. The Bush pump B type has been used in applications as deep as 100 metres (328 ft). The Yolanta piston pump is operated by a large diameter wheel instead of a lever arm. It has been installed to depths of 110 metres (361 ft).

Deep well reciprocating pumps require different power input during up and down movement of lever. This problem has been rectified up to some extent in Yolanta Pump by providing a flywheel and counter weight. Volanta pump operates in rotary motion. Size of the Flywheel in Volanta Pump is big and weight of the counter weight is less; therefore, torque equalization cannot be done properly.

OBJECTS OF THE INVENTION:

An object of the invention is to provide a pump which provides facility of operating submersible reciprocating pumps by both electric power and manually.

Another object of the invention is to use electric energy or solar energy to operate a deep well submersible reciprocating pump.

Another object of the invention is to provide a mechanism to hand operate a deep well submersible reciprocating pump by both rotary as well as oscillating mode.

Yet another object of the invention is to provide a counter weight, for a deep well submersible reciprocating pump, in such a way that“Torque Equalization” during up and down stroke of pump rod can be achieved up to maximum extent and hand operation of pump can be done without any excessive fatigue on human body.

Still another object of the invention is to lift water by a pump to an overhead tank so that water could further be delivered to various locations.

SUMMARY OF THE INVENTION:

According to this invention, there is provided an electric and hand operated pump system, said system comprising a pump comprising a reciprocating pump rod, said pump being connected with at least a pair of crank, each of said cranks connected to corresponding flywheels, each of said flywheels being connected by counterweights, each of said cranks being connected to a motor such that when motor starts, said pump being configured to pump out fluid (water).

In at least an embodiment, said pump system comprises at least a crank and slider mechanism configured to convert rotary motion of said cranks into reciprocating motion of the pump rod to enable said pump to pump out fluid.

In at least an embodiment, said pump system comprises at least one flywheel being connected with a motor by means of a one way bearing.

In at least an embodiment, said pump system comprises at least a handle configured to angularly displacement of said cranks.

According to this invention, there is provided an electric and hand operated pump system configured to lift ground water by means of a submersible reciprocating pump, which operates by electric energy and hand manually by both rotary and oscillating mode, said system comprises: a submersible reciprocating pump, configured to lift water, said pump comprising a reciprocating pump rod, said submersible pump being connected with at least a pair of cranks, each of said cranks connected to corresponding flywheels, each of said flywheels have at least one counterweight, each of said cranks being connected to a motor such that when motor starts, said pump is configured to pump out fluid (water).

In at least an embodiment, said system comprises:

a water receiver tank, with a bottom flange and a top flange, said water receiver tank configured to receive water;

a reciprocating pump rod transfers reciprocating motion to a submersible reciprocating pump configured to lift water through a riser pipe to said water receiver tank, said top flange equipped with a seal around said reciprocating pump rod so that water gets pressurized insider said water receiver tank and transfers to an overhead tank through a transfer pipe;

a pair of cranks, comprising an operative left hand side crank and an operative right hand side crank, connected to corresponding flywheels, on either side;

a coupler connecting a connecting rod to a pump rod inside a main riser pipe connected with said reciprocating pump at its one end and to said bottom flange, in order to convert rotary motion of said pair of cranks into reciprocating motion of said reciprocating pump rod;

a set of flywheels comprising an operative right hand side flywheel and an operative left hand side flywheel, each of said flywheels being connected with a corresponding counterweight, said operative left hand side flywheel being provided with a retractable handle; and

a set of shafts comprising an operative left hand side shaft and an operative right hand side shaft, said shaft being connected to said operative left hand side flywheel, said shaft being mechanically linked with a pair of cranks and said set of flywheels such that as shaft is angularly displaced, said flywheels and said cranks are, simultaneously, angularly displaced.

Typically, the water receiver tank and a pump crank case, consisting of said pair of cranks, said connecting rod, and said coupler, are situated on a pump stand.

Typically, the water receiver tank is coaxial with the pump stand.

Typically, said system comprises a pump crank case consisting of said pair of cranks, said connecting rod, and said coupler.

Typically, said coupler is connected with a pump rod and said connecting rod connecting said cranks to said pump rod.

Typically, shafts are supported by bearing housings on either side of the pump crank case, consisting of said pair of cranks, said connecting rod, and said coupler, respectively.

Typically, the operative right hand side flywheel is placed inside a flywheel casing.

Typically, the operative right hand side flywheel is placed inside a flywheel casing, said flywheel housing is firmly tightened with the pump crank case with fasteners.

Typically, said first driver mechanism is a first sprocket.

Typically, said first driver mechanism is a first gear. Typically, a second driver mechanism on motor transfers rotary motion to said first driver mechanism through said driven mechanism.

Typically, said driven mechanism is a chain.

Typically, said driven mechanism is a second gear.

Typically, a first sprocket is connected to said drive by means of a chain.

Typically, a first gear is connected to said drive by means of a second gear.

Typically, a second sprocket on motor transfers rotary motion to a first sprocket through a chain.

Typically, a first sprocket further transmits rotary motion to said shaft.

Typically, said shaft is connected to said operative left hand side flywheel, said shaft being mechanically linked with a pair of cranks and said set of flywheels by crank pin.

Typically, a crank pin connects with one end of said connecting rod further connected with said coupler.

Typically, a crank pin connects with one end of said connecting rod further connected with said coupler by a coupler pin.

Typically, a crank pin connects with one end of another chain and its straightening mechanism is further connected with said coupler by a coupler pin. Typically, said one end of said riser pipe is connected with said submersible reciprocating pump and said other end is connected with said bottom flange of said water receiver tank by a pipe socket.

Typically, said riser pipe and said reciprocating pump are kept inside a casing pipe.

Typically, said pair of cranks, comprises an operative left hand side crank and an operative right hand side crank, connected to corresponding flywheels, on either side, by a set of shafts, respectively.

Typically, said operative left hand side shaft carries a one-way bearing which further carries a first driver mechanism connected to a drive by means of a driven mechanism.

Typically, said transfer pipe is provided with a self-closing spring loaded valve to obtain water at ground level.

Typically, said transfer pipe is equipped with a non-re turning valve to avoid excessive back pressure on said water receiver tank.

Typically, said set of flywheels are located in a slotted flywheel housing such that when said handle is placed between said slots, said pump operates in hand operating oscillating mode.

Typically, said handle is kept on a clamp during motor operating mode. Typically, said flywheel comprises ribs, each of said ribs being a radius of said flywheel, extending from centre hub of said flywheel to outer rim of said flywheel.

Typically, said flywheel comprises ribs, each of said ribs being a radius of said flywheel, extending from centre hub of said flywheel to outer rim of said flywheel, characterised in that, a clamp being located on one of said ribs, said clamp further being used to hold said handle for operating motor during motor operating mode.

Typically, said flywheel comprises ribs, each of said ribs being a radius of said flywheel, extending from centre hub of said flywheel to outer rim of said flywheel, characterised in that, a clamp being located on one of said ribs, said handle being kept out of said clamp during hand operating rotary mode.

Typically, said flywheel comprises ribs, each of said ribs being a radius of said flywheel, extending from centre hub of said flywheel to outer rim of said flywheel, characterised in that, a clamp being located on one of said ribs, said handle being kept out from said clamp and placed between slots on said flywheel housing during hand operating oscillating mode.

Typically, said counterweight is a circular segment.

Typically, a plurality of counterweights is configured to be placed on both side of said flywheels to overcome torque produced by weight of said pump rod and weight of water in said riser main. Typically, equal number of counterweights is placed on either side of a crank case, said number being correlative to depth of installation of reciprocating pump.

Typically, said counterweights are located in a manner such that that centre of mass of said counterweight is diametrically opposite to the weight (weight of pump rod plus weight of water inside rise pipe) acting on said coupler pin so that torque can be balanced during up and down movement of said pump rod.

Typically, said counterweights are located in a manner such that that centre of mass of said counterweight is diametrically opposite to the weight (weight of pump rod plus weight of water inside rise pipe) acting on said coupler pin so that torque can be balanced during up and down movement of said pump rod, characterised in that, said counterweight being located on corresponding ribs of said flywheel.

Typically, an outer most counterweight on said operative left hand side flywheel is provided with a handle.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS:

The invention will now be described in relation to the accompanying drawings, in which:

Figure 1 illustrates a front view and a general layout for an electric and hand operated submersible reciprocating pump system;

Figure 2 illustrates a side view of pump crank case assembly of the electric and hand operated submersible reciprocating pump system; Figure 3 illustrate details of motor and pump sprocket mechanism of the electric and hand operated submersible reciprocating pump system;

Figure 4 illustrates details of crank case assembly of the electric and hand operated submersible reciprocating pump system;

Figure 5 illustrates details of flywheel with counter weight and handle lever of the electric and hand operated submersible reciprocating pump system;

Figure 6 illustrates assembly of flywheel and counter weight of the electric and hand operated submersible reciprocating pump system;

Figure 7 illustrates different position of handle during motor mode, hand cranking rotary mode, and hand cranking oscillating mode of the electric and hand operated submersible reciprocating pump system;

Figure 8 illustrates general front view of electric and hand operated submersible pump system;

Figure 9 illustrates general top view of electric and hand operated submersible pump system; and

Figure 10 illustrates general side view of electric and hand operated submersible pump system.

DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWINGS:

According to the invention, there is provided an electric and hand operated pump system. Specifically, this is an electric and hand operated submersible reciprocating pump system. This system is configured to lift ground water by means of a submersible reciprocating pump, which operates by electric energy and hand manually by both rotary and oscillating mode.

Figure 1 illustrates a front view and a general layout for an electric and hand operated submersible reciprocating pump system.

Figure 2 illustrates a side view of pump crank case assembly of the electric and hand operated submersible reciprocating pump system.

Figure 3 illustrate details of motor and pump sprocket mechanism of the electric and hand operated submersible reciprocating pump system.

Figure 4 illustrates details of crank case assembly of the electric and hand operated submersible reciprocating pump system.

Figure 5 illustrates details of flywheel with counter weight and handle lever of the electric and hand operated submersible reciprocating pump system.

Figure 6 illustrates assembly of flywheel and counter weight of the electric and hand operated submersible reciprocating pump system.

Figure 7 illustrates different position of handle during motor mode, hand cranking rotary mode, and hand cranking oscillating mode of the electric and hand operated submersible reciprocating pump system.

Figure 8 illustrates general front view of electric and hand operated submersible pump system. Figure 9 illustrates general top view of electric and hand operated submersible pump system.

Figure 10 illustrates general side view of electric and hand operated submersible pump system.

In accordance with an embodiment of this invention, there is provided a pump stand [14]. A water receiver tank [12] and a pump crank case [9] are situated on the pump stand [14]. In at least an embodiment, the water receiver tank [12] is coaxial with the pump stand [14].

Pump crank case [9] comprises one pair of crank [6 & 6a], a connecting rod [7], and a coupler [26]. The coupler [26] is connected with a pump rod [16] and the connecting rod [7] connects cranks [6 & 6a] to the pump rod [16]. These cranks are connected to fly wheels [1 & la] on either side by shafts [27] or [27a], respectively. Shafts [27] and [27a] are supported by bearing housings [8] and [8a] on either side of the crank case [9], respectively. Flywheel on Right Hand Side (R.H.S.) [la] is connected with counter weight [4a] and placed inside flywheel casing [33]. This flywheel housing [33] is firmly tightened with the crank case [9] with fasteners [32].

Left Hand Side (L.H.S.) shaft [27] carries one way bearing [28] which further carries a first sprocket [2]. This first sprocket [2] is connected with a drive such as an Alternating Current (AC) / Direct Current (DC) Motor [3] by a chain [57]. Instead of the sprocket, a gear on one way bearing [28] could be connected with another gear on motor [3].

Figure 3 illustrates arrangement of the motor [3] and first (chain) sprocket [2]. Shaft [27] is also connected with flywheel [1]. Flywheel [1] is provided with counter weights [4] and retractable handle [5]. Once drive [3] (motor) starts, then a second sprocket [34] on motor [3] transfers rotary motion to the first sprocket [2] through chain [57]. The first sprocket [2] further transmits rotary motion to the shaft [27]. Shaft [27] is mechanically linked with both cranks [6 & 6a] and both flywheels [1 & la] by crank pin [35]. Therefore, as shaft [27] starts rotating, all mechanically linked members start rotating. Crank pin [35] also connects with one end of connecting rod [7]. Another end of the connecting rod [7] is connected with coupler [26] by coupler pin [30]. Coupler [26] connects connecting rod [7] to pump rod [16]. This typical crank and slider mechanism converts rotary motion of cranks [6 & 6a] into reciprocating motion of the pump rod [16]. This connecting rod [7] could be replaced by chain and its straightening mechanism to connect pump rod [16] by both cranks [6 & 6a] with the help of a crank pin [35]. Pump rod [16] is kept inside a main riser pipe [15]. One end of the riser pipe [15] is connected with a submersible reciprocating pump [18] and other end is connected with a bottom flange [52] of the water receiver tank [12] by a pipe socket [53]. Riser pipe [15] and submersible reciprocating pump [18] are also kept inside the casing pipe [17]. Pump rod [16] transfers reciprocating motion to the pump [18]. Submersible reciprocating pump [18] lifts water through the riser pipe [15] to the water receiver tank [12] Top flange [51] is equipped with seal [13] around the pump rod [16] inside the water receiver tank [12]. Hence, water gets pressurized inside receiver tank [12] and transfers to overhead tank [22] through a transfer pipe [21]. The transfer pipe [21] is provided with self-closing spring loaded valve [19] to obtain water at ground level. This transfer pipe [21] is also equipped with non-returning valve [20] to avoid excessive back pressure on water receiver tank [12].

Hand operation of this pump can be done by extending retractable handle [5] in rotary mode (Figure 7 position (b)) and oscillating mode (Figure 7 position (c)). Handle [5] rotates in same direction of rotation of the motor. In such case, the first sprocket [2] remains stationary because of one way bearing [28]. Hence, motor [3] also remains stationary during hand operation of the pump. Figure 5 and Figure 7(a) illustrate the position of retractable handle [5] when pump operates by motor [3]. Handle [5] keeps on clamp [35] during motor operating mode. Handle [5] needs to be kept out from the clamp [35] and placed in position (b) for hand operating rotating mode. In this case, handle screw [41] fastens with counter weights [4]. When handle [5] is placed between the slots [40] on flywheel housing [10], then pump operates in hand operating oscillating mode.

As seen in Figure 5 and Figure 6 of the accompanying drawings, the flywheel consists of many ribs [39] which extend from the centre of hub of the flywheel to outer rim of the flywheel. Clamp [35] is situated on one of those ribs which further used to hold the handle [5] during motor operating mode. Further, counterweights [4] are located on ribs [39] of the flywheel [1] with help of fasteners [37] & [38].

Figure 7 represents different position of handle [5].

Figure 7(a) shows position of handle [5] during motor operating mode and handle is placed on clamp [35].

Figure 7(b) shows the position of handle [35] during hand operating rotary mode. In this mode, handle is kept out from the clamp [35].

Figure 7(c) shows position of handle during hand operating oscillating mode. In this mode handle [5] is out from the clamp [35] and placed between the slots [40] on flywheel housing [10].

Weight of the counter weight depends on the total weight of the pump rod [16] and the water weight inside the riser main [15]. Total weight of the pump rod and water column weight acts on the coupler pin [30]. Counter weight, in this invention, is a circular segment (e.g. 75° < Q < 120°). Design of the counter weight is provided in such a way that centre of mass of counter weight is diametrically opposite to the weight (weight of pump rod plus weight of water inside rise pipe) acting on the coupler pin [30] so that torque can be balanced during up and down movement of the pump rod [16]. There could be“n” numbers of different size and thickness counter weights [4] & [4a] placed on both Left Hand and Right Hand Side flywheel [1] & [la] respectively. Figure 6 illustrates the way of placement of counter weights [4] on the flywheel [1] by fasteners [38] & [39]. Outer most counter weight [43] on Left Hand Side flywheel [1] is provided with a handle [5]. Hinge support [36] is provided to hold the handle [5] on outer most counter weight [43].

In at least one embodiment, the pump system of this invention can be operated in electric mode. Electricity could be provided by solar photovoltaic cells, electric grid lines, and / or by electric generators. Electric mode of operation reduces dependency of pump operation manually. Pump could be operated in electric mode without any involvement of human effort.

The TECHNICAL ADVANCEMENT of this invention lies in providing an electric and hand operated pump system which allows the system to convert from a regular oscillating hand pump mode to a rotary hand cranking and motor operated mode with relative ease. The positioning of flywheels and counterweights on either side of cranks equalizes torque during up and down stroke, thereby providing operational ease to a user. The placement of handle on counter weight and its retracting mechanism for hand operating mode and motor operated mode substantially reduces effort. The system is made modular in terms of depths from which water can be retrieved due to utilization / modularity in the number of counter weights on either side of crank case. While this detailed description has disclosed certain specific embodiments for illustrative purposes, various modifications will be apparent to those skilled in the art which do not constitute departures from the spirit and scope of the invention as defined in the following claims, and it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.