MOTOR JET APPARATUS FOR PREVENTING AND REMOVING SCALE USING POTENTIAL DIFFERENCE

Technical Field

[1] The present invention relates to a motor jet apparatus for preventing and removing scale in a pipe using a potential difference of metal, and more particularly, to a motor jet apparatus for preventing and removing scale in the pipe using a potential difference of metal to suppress the scale generated in the pipe by injecting magnesium ion to be ionized using a magnesium sacrificial anode, especially using a potential difference inside the pipe of subsurface water.

[2]

Background Art

[3] As is generally known, subsurface water as water located under the ground contrary to surface water is an important resource for supplying waterworks water, industrial water, agricultural water, municipal water, etc. The composition of subsurface water is much influenced by the nature of the soil, and generally it has more soluble material than surface water but the change is very low in soluble material. Furthermore, subsurface water contains a lot of dissolved solids such as sodium, potassium, calcium, magnesium, sulfuric acid, iron, sodium hydrogen carbonate, silicic acid, and the like compared to surface water. When subsurface water is developed, these dissolved solids allow a large amount of scale to be formed in the pipe and pump. Scale may be differently formed according to the corrosion and water quality state in the pipe. Most of scale is mainly composed of iron oxides as well as calcites to help their bond. Such scale which is a cause of corrosion cannot be removed by chemicals or physical force in case of a subsurface water pipe, contrary to a water service pipe or heating duct, thereby creating a problem of causing the blockage and damage of a pipe as well as the overload and malfunction of a motor, and therefore the pipe should be replaced every 2-3 years. As a result, there is a problem that frequent replacement of the pipe or motor increases the cost of replacement, thereby bringing about an economic burden.

[4]

Disclosure of Invention

Technical Problem

[5] The present invention is worked out to solve the problem set forth above. Therefore it is an object of the this invention to provide a motor jet apparatus for preventing and removing scale in a pipe using a potential difference of metal to suppress the generation of scale in the pipe of subsurface water by continually injecting magnesium

ion through a sacrificial anode.

[6] It is another object of the invention to provide a motor jet apparatus for preventing and removing scale in a pipe using a potential difference of metal to fix a sacrificial anode in a secure and easy way without being moved.

[7] It is still another object of the invention to provide a motor jet apparatus for preventing and removing scale in a pipe using a potential difference of metal to be used economically by replacing it for each portion step by step when a sacrificial electrode is consumed.

[8]

Technical Solution

[9] In order to achieve the foregoing object, a motor jet apparatus for preventing and removing scale in a pipe using a potential difference of metal according to the present invention includes a sacrificial anode made of magnesium alloy for preventing scale in the pipe, which is built in a discharge tube of a underwater motor or pump made of brass material, and a plurality of partitions are installed in a radial shape to be identical to the inner diameter of the discharge tube, and fluid moves between these partitions and ionization is generated by a potential difference from the discharge tube according to the movement of fluid, and a hollowed cylindrical upper casing, which is combined between the discharge tube and the pipe, and formed in a streamlined shape to join the fluid being moved between the partitions.

[10] Furthermore, the partition according to the present invention is further provided with streamlined grooves or straight lined grooves for facilitating the movement of fluid.

[11] Moreover, the inner wall surface of the discharge tube according to the present invention is further provided with more than two fixed grooves symmetrically to fix a partition of the built-in sacrificial anode.

[12] Additionally, the sacrificial anode according to the present invention is fixed to the inner wall surface of the discharge tube in a tight fitting manner, and the number of the partitions in the sacrificial anode is 4-10, and the partitions are equally divided in a circumferential direction.

[13] Furthermore, the partition according to the present invention is formed in a spiral shape and the inner wall surface of the discharge tube is further provided with a guide groove corresponding to the partition.

[14] Moreover, a plurality of the sacrificial anodes according to the present invention are provided in a longitudinal direction and can be replaced for each portion to be serially combined with.

[15]

Brief Description of the Drawings

[16] The above and other objects, features and advantages of the present invention will become apparent from the following description of preferred embodiments given in conjunction with the accompanying drawings, in which: [17] Fig. 1 is a cross-sectional view illustrating a state in which a motor jet apparatus according to the present invention is installed at an underwater motor; [18] Figs. 2 and 3 are cross-sectional views illustrating an internal structure of a motor jet apparatus according to the present invention; [19] Fig. 4 is an exploded perspective view of Fig. 3; and

[20] Figs. 5 through 8 are perspective views illustrating a variety of shapes of a sacrifici al anode according to the present invention. [21]

[22] 1 : Undersurface motor

[23] 10 : Discharge tube

[24] 11 : Guide groove

[25] 20 : Sacrificial anode

[26] 21 : Partition

[27] 21a : Streamlined groove

[28] 21b : Straight lined groove

[29] 22 : hole

[30] 23a : bolt

[31] 23b : nut

[32] 30 : Upper casing

[33] 40 : Pipe

[34] [35]

Mode for the Invention [36] Hereinafter, a motor jet apparatus for preventing and removing scale in a pipe using a potential difference of metal according to the present invention will be described in detail with reference to accompanying drawings. [37] Fig. 1 is a cross-sectional view illustrating a state in which a motor jet apparatus according to the present invention is installed at an underwater motor, and Figs. 2 and

3 are cross-sectional views illustrating an internal structure of a motor jet apparatus according to the present invention, Fig. 4 is an exploded perspective view of Fig. 3, and Figs. 5 through 8 are perspective views illustrating a variety of shapes of a sacrificial anode according to the present invention. [38] As illustrated above, a motor jet apparatus for preventing and removing scale in a

pipe using a potential difference of metal according to the present invention includes a sacrificial anode 20 made of magnesium alloy for preventing scale in a pipe 40 which is built in a discharge tube 10 of a underwater motor 1 or pump, and a plurality of partitions 21 are installed in a radial shape, and ionization is generated by a potential difference from the discharge tube 10, and an upper casing 30 for joining the fluid being moved between the partitions 21.

[39] A motor jet apparatus for preventing and removing scale in a pipe using a potential difference of metal according to the present invention is installed at a discharge portion of an apparatus for ejecting fluid using power such as an underwater motor 1 or a pump, or of an apparatus for ejecting to the pipe without using power, thereby suppressing scale by dissolved solids contained in the fluid, especially in the subsurface water being ejected to the pipe 40.

[40] The discharge tube 10 is installed at a discharge portion of an underwater motor 1 or a pump, and is made of brass material. The sacrificial anode 20 is combined with inside the discharge tube 10.

[41] The sacrificial anode 20 is installed with a plurality of partitions 21 in a radial shape. The sacrificial anode 20 is made of magnesium alloy. When fluid moves between the partitions 21, current flows since a potential difference is generated between the sacrificial anode 20 made of magnesium alloy and the discharge tube 10 made of brass. At this time, since the ionization tendency of magnesium is greater than that of copper, the ionization of magnesium is generated and magnesium ion is drained out along with the fluid being discharged through the discharge tube 10 to be discharged to the pipe. Accordingly, the generation of scale is suppressed by the magnesium ion inside the pipe. In this way, it is the main feature of the present invention that the generation of scale can be suppressed by the magnesium ion ionized using a sacrificial anode. Therefore, the suppression of scale generated in the pipe allows a subsurface water pipe to be used semi-permanently without replacement thereby reducing maintenance cost, and prevents the corrosion of the pipe thereby extending the life of the pipe.

[42] For the sacrificial anode 20, it is preferable that the diameter of the partition 21 in a radial shape is identical to or a little greater than the diameter of the inner wall surface of the discharge tube 10 so as to be combined with each other in a tight fitting manner. In this way, when they are combined with each other in a tight fitting manner, a fixed state of the sacrificial anode 20 can be maintained according to the movement of fluid, thereby preventing a collision of the sacrificial anode 20 with the discharge tube 10. Furthermore, as illustrated in Fig. 4, a guide groove 11 for combining an end of the partition 21 with the inner wall surface of the discharge tube 10 may be further provided to prevent the flow of the sacrificial anode 20 in a circumferential direction.

It is preferable that two or more guide grooves 11 are symmetrically provided.

[43] It is preferable that the number of partitions 21 of the sacrificial anode 20 is 2-10 and the partitions are equally divided in a circumferential direction.

[44] Fig. 2 illustrates that the sacrificial anode 20 is provided with four partitions 21, and

Fig. 3 illustrates that it is provided with eight partitions 21.

[45] Furthermore, it is preferable that streamlined grooves 21a or straight lined grooves

21b are further provided to facilitate the movement of fluid in the partition 21 of the sacrificial anode 20. Fig. 5 illustrates streamlined grooves 21a, and Fig. 6 illustrates straight lined grooves 21b.

[46] In case of the streamlined grooves 21a, it is preferable that the direction of the grooves formed in the partition 21 is formed so as to face to the inside of the upper casing 30 combined with the end part of the discharge tube 10. With the streamlined grooves 21a, it is possible to increase the contact area between the sacrificial anode 20 and the fluid as well as to generate a vortex in the fluid.

[47] The upper casing 30 is combined between the discharge tube 10 and the pipe 40 and the inner wall surface is hollowed in a streamlined shape to join the fluid being moved between the partitions 21.

[48] Fig. 7 is a view illustrating another shape of the partition, and illustrates a spiral partition. At this time, it is preferable that spiral guide grooves 12 corresponding to the partition 21 are further provided on the inner wall surface of the discharge tube 10. By combining the spiral partitions 21' with the spiral guide grooves 12 in a screw combining type, it can be securely combined with each other.

[49] Fig. 8 is a view illustrating another shape of sacrificial anode, and illustrates in which a plurality of sacrificial anodes are provided in a longitudinal direction to be serially combined with one another. In a hole 22 located in the center of the sacrificial anodes 20, they are fixed and combined with a bolt 23a and a nut 23b. Accordingly, it has an economical effect that a seriously consumed portion of the sacrificial anodes 20 is replaced step by step without replacing the whole sacrificial anodes 20 when the sacrificial anodes 20 are consumed.

[50] While the present invention has been described by way of the restricted embodiments with reference to the accompanying drawings, this invention is not restricted by those embodiments, and it will be appreciated that a variety of changes and modifications can be made by those skilled in the art without departing from the spirit of the invention and the equivalents of the appended claims.

[51]

Industrial Applicability

[52] As described above, a motor jet apparatus for preventing and removing scale in a

pipe using a potential difference of metal according to the present invention has an economical effect that the corrosion of the pipe can be prevented, the life of the motor or pump can be extended, and the pipe and motor can be used semi-permanently without replacement since the scale in the pipe is prevented by the magnesium ion ionized using a potential difference between the discharge tube and the sacrificial anode made of magnesium alloy when the fluid flows. Furthermore, the sacrificial anodes can be used more economically since they can be replaced for each portion step by step when they are consumed. [53]