Vortex Cleaning Screen Filter

TECHNICAL FIELD

The present invention relates to a vortex cleaning screen filter system, which is suitable for use in all areas needed in the industry, primarily in agricultural irrigation systems, and employed to separate the undesirable particles in the water.

The present invention particularly relates to a vortex cleaning screen filter system, which performs cleaning without using the washing components found in the state of the art by preventing the particles from adhering to the screen surface by distributing the water before it reaches the screen surface, by means of creating a regular water vortex on the screen surface by means of a turbine fixedly positioned at the screen inlet in the filter.

STATE OF THE ART

It is of great importance that the particles in the irrigation water do not damage the irrigation system in order to irrigate more efficiently with less water in agriculture. A stable operation of cooling systems is important for the sustainability of industrial processes. Particles that can damage the related systems are included in the cooling waters during the process. Filtration is of great importance such that these particles, which accumulate over time, do not cause clogging or other malfunctions in the components of the systems. Filtration is defined as the separation of suspended solids in the fluid by utilizing physical properties thereof.

Today, there are many filter systems according to the use area. One of these systems is the screen filter, the systems in which unwanted particles are separated from the water/fluid by means of a screen with a porous structure positioned inside the filter body. Screen filters are generally used in waters in artesian, well, lake, stream, dam, etc. sources.

Particles in the screen filters clog the screen pores over time, therefore, the screen needs to be cleaned. Screen filters used today can be grouped into 3 groups according to the cleaning system, there are:

• Manual screen filters, in which the user removes the screen from the filter in certain periods and cleans it, • Semi-automatic screen filters that activate the cleaning system when it exceeds the limits determined by monitoring the pressure difference by the user by measuring the pressure of the water entering the filter and the water leaving the filter, and

• Automatic screen filters that detect in an electronic environment that the pressure difference of the water entering the filter and the water leaving the filter exceeds the specified limits and then switches to the automatic cleaning position.

The filter must be opened in order to perform the cleaning process in the manual screen filters used in the state of the art. Then the screens are removed and cleaned with the help of pressurized water. After this process is completed, the filter is reassembled and becomes usable.

The semi-automatic and automatic screen filters used in the state of the art switch to the filter system cleaning position (backwash) at certain intervals according to the pressure of the inlet and outlet water/fluid. When the filter is in this position, the backwash system located in the center of the cylindrical screen becomes active and by means of the backwash system, which is moved manually and/or by a drive element, the particles covering the screen surfaces are vacuumed and the dirty water is thrown out of the filter through the discharge outlet.ln order to clean the screen surfaces in semi-automatic or fully automatic filters in the available applications, different components should work in a coordinated manner. These components consist of important parts such as collector pipe, suction nozzles, piston that provides helical movement for screening the screen surfaces and turbine assembly.

In all screen filter models described above, a separate process (labor and time) is required for cleaning the screen. Since the cleaning process can be performed very frequently depending on the contamination rate of the fluid used, it slows down the work force in semiautomatic screen filters. In addition, extra clean water is consumed for cleaning the manual screen filter.

In the literature search carried out in the state of the art, the patent document numbered EP3240462B1 and titled "A Cleaning Apparatus for Cleaning Filter Screens" was determined. When the related document is examined, it is observed that it is summarized as follows; "an apparatus for cleaning Circular filter screens is described, and it comprises at least one suction chamber disposed in a channel of the dirt collection conduit system extending along a central axis of the housing of the filter screen. The suction chamber comprises a central nozzle through which the liquid is forced to flow by the pressure difference between the outer surface of the filter screen and one end of the dirt collection conduit system. The liquid flowing through the central nozzle establishes a low-pressure regime around the mouth of the central nozzle such that the liquid is forced to flow from the outer surface of the filter screen into the suction chamber through a plurality of peripheral suction nozzles arranged around the central nozzle, thus, the dirt and unfiltered part accumulated along the inner surface of the filter screen is forced to clean with water”.

In the above-mentioned document, a backwash system is required to clean the screen surface.

Consequently, existence of the aforementioned problems and the inefficacy of the available solutions necessitated making an improvement in the technical field of screen filters.

OBJECTS OF THE INVENTION

The present invention relates to a vortex cleaning screen filter system that meets the above- mentioned requirements, eliminates all disadvantages, and brings some additional advantages.

In the present invention, a turbine is positioned in a fixed manner to the screen inlet in the filter, which is utilized to separate the particles of the fluids with properties such as water, which is primarily used in agricultural and industrial areas. Thus, the water is distributed before it reaches the screen surface, and a regular water vortex is formed on the screen surface. It is to create a vortex cleaning screen filter system that provides the opportunity to clean without using the washing components in the state of the art by preventing the particles from adhering to the water vortex formed.

The object of the present invention is to minimize the adhesion of particles to the screen surface by allowing the water to create vortex inside the screen with the turbine positioned before it reaches the screen. Thus, while the dirty water is filtered, the contamination time of the filter will be extended. This will eliminate the use of cleaning components found in the state of the art that periodically clean the screen surfaces.

Another object of the present invention is to provide a screen filter with a high degree of cleaning performance and ease of assembly by saving material without using a complex backwash system.

Other object aimed to be realized by the present invention are as follows: • Late contamination of the filter,

• Delay of clogging time even at high pollution load,

• Offering low labor costs during filter manufacturing,

• Requiring low labor during use,

• Easy to service and maintain,

• Low input costs. (No backwash components in the system)

Another object of the present invention is to integrate the designed turbine into automatic cleaning screen filters, if desired.

Structural and characteristic features of the present invention will be understood clearly by the following drawings and the detailed description provided with reference to these drawings, and therefore the respective evaluation should be conducted by taking these figures and the detailed description into consideration.

BRIEF DESCRIPTION OF THE FIGURES

The present invention needs to be evaluated together with the figures described below in order to understand the configuration, additional elements and advantages of the present invention. Preferably, automatic filter images are given below, and the designed system can also be used in manual and semi-automatic screen filters.

Figure - 1 is the general view of the screen filter of the present invention.

Figure - 2 is the exploded view illustrating the main elements of the screen filter of the present invention.

Figure - 3 is the sectional view of the screen filter of the present invention.

Figure - 4 is the detailed view of the turbine from different angles, which is the subject of innovation in the screen filter of the present invention.

Figure - 5a and 5b are the general views of the manual cleaning (5a) and semi-automatic cleaning (5b) screen filters used in the state of the art.

REFERENCE NUMERALS:

A. Vortex Cleaning Screen Filter 1. Vessel

1.1. Discharge output

2. Body

2.1. Water input

2.2. Water output

3. Control Unit

4. Valve

5. Turbine

5.1. Blade

5.2. Dome

5.3. Transition gap

5.4. Screen bearing

5.5. Body bearing

6. Screen

Figures do not necessarily have to be scaled, and redundant details that are not required for understanding the present invention may be omitted. Additionally, components that are at least substantially identical or at least have substantially identical functions are indicated with the same number.

DETAILED DESCRIPTION OF THE INVENTION

In the detailed description provided herein, preferred embodiments of the vortex cleaning screen filter (A) of the present invention are solely provided for the purpose of ensuring a better understanding of the respective subject and without imposing any limiting effects.

In the explanation to be made below, the term of fluid in some parts and water in some parts is used, and both terms can be used interchangeably in the description.

The vortex cleaning screen filter (A) of the present invention, in its most basic form, comprises a body (2) on which the water inlet (2.1) and water outlet (2.2) are positioned, a bowl (1) in which the cylindrical screen (6) in which the water/fluid is filtered is positioned, a control unit (3), which regulates the opening-closing of the positioned valve (4) before the discharge outlet (1.1) for cleaning the filter, a valve (4) that allows the dirty water to be discharged, cylindrical screen (6) that provides water filtration, a turbine (5), which is positioned before said screen (6) and prevents the particles from adhering to the screen surface by allowing it to form a vortex around the screen (6) (Figure-1 and figure-2). The main innovation of the vortex cleaning screen filter (A) of the present invention relates to the turbine (5) structure that prevents the particles from adhering to the screen (6) surface without using the cleaning components available in the state of the art. Said turbine (5) is positioned such that it is fixed in a position where the water entering the system at the water inlet (2.1) will contact before entering the screen (6).

The turbine (5) of the present invention comprises a dome (5.2) formed in the form of a hemisphere in the center, the middle part of which decreases towards the protruding edges, allowing for directing the water to the blades (5.1) formed around it by firstly coming on top of it. Said dome (5.2) is preferably in the form of a hemisphere and may also be in polygonal, circular, conical, etc. geometric shapes with a convex center. The task of the said dome (5.2) is to reduce pressure losses by entering the water into the blades (5.1) at appropriate angles and to direct the water to the blades (5.1). There are at least two blades (5.1) that is positioned circularly around said dome (5.2) and ensures that the particles adhere to the screen (6) surface at a minimum level by providing that the water moves circularly by creating a vortex on the screen (6) surfaces. The blade structure may be in planar or helical form. In addition, the blade starting and finishing lines may be circular or linear, each said blade (5.1) is positioned to make an angle other than 0° to the body of the dome (5.2). This angle may be between 1° and 90°. Each blade (5.1) has a geometry that expands from the center of the turbine (5) to the edge. The fluid that hits the dome (5.2) on the blades (5.1) passes through the transition gaps (5.3) between two successive blades (5.1) and reaches the surface of the screen (6) (Figure-4).

On the turbine (5), there is a screen bearing (5.4) formed circularly in the part where it will contact the screen (6). Said screen bearing (5.4) enables the screen (6) to be centered on the filter and acts as a bearing for the screen o-ring. Again, at the outer part of the turbine (5) where the water comes, the body bearing (5.5) is made by making at least one rib in order to ensure that the turbine (5) is centered on the body (2). (Figure-4).

The movement of a fluid around an axial center due to pressure differential is called vortex. In the system we designed, the fluid coming from more than one point to the screen (6) surface by means of the turbine (5) rotates by centering the cylindrical screen (6) and creating a vortex through the screen (6) towards the discharge outlet (1.1). According to Bernoulli's law, pressure is inversely proportional to velocity in fluids. In the center of the vortex, the velocity is very high and the pressure is very low. Conversely, as you move away from the center, the pressure is higher, while the velocity remains low. In this case, the fluid tends to move from the region of high pressure to the region of low pressure. Based on the basic principle here, due to the pressure difference created by the opening of the valve (4), the fluid is directed to the discharge outlet (1.1) together with the particles therein.

The working principle of the basically designed turbine (5) and the vortex cleaning screen filter (A) is as follows:

The fluid or water coming to the system from the water inlet (2.1) first comes to the turbine (5) surface. Here, the fluid hitting the dome (5.2) located in the middle part of the turbine (5), which has a higher elevation compared to its surroundings, is directed onto the blades (5.1). The fluid that creates a vortex by passing through the transition gap (5.3) between two successive blades (5.1) prevents the contaminant particles that come with this flow from adhering to the surface of the screen and makes a continuous sweeping operation. By opening the valve (4) with the command from the control unit (3), the filter system is opened to the atmosphere from the discharge outlet (1.1) and the contaminated water is discharged from the high-pressure area to the low pressure area (from inside to outside).

The designed turbine (5) can be integrated into the screen filters with an automatic backwash system, if desired.

The protection scope of this application is defined in the pending patent claims, and under no circumstances may it be construed to be limited with the detailed description provided above for illustration purposes, moreover, it is obvious that a person skilled in the art may set forth the novelty of the present invention by taking advantage of similar embodiments and/or implement this embodiment in the fields with similar purposes used in the relevant art. Therefore, it is apparent that such embodiments will lack the novelty criteria, and particularly the criteria of surpassing the state of the art.