CN219050589U - Self-cleaning filter - Google Patents

Abstract

The application provides a self-cleaning filter, including inlet tube, filter tube, ejector pin and drain. The water inlet pipe is provided with a first water inlet, the water inlet pipe is internally provided with a lower end piston, the lower end piston moves along the axial direction of the water inlet pipe, the filter pipe is connected with the bottom of the water inlet pipe, the filter pipe is internally provided with a coaxial sleeve filter screen, and the side part of the filter pipe is provided with a water outlet. The ejector rod is arranged at the axis of the filter screen and is arranged along the axial direction of the filter screen. The drain is arranged below the filter pipe, the ejector rod extends downwards through the drain, a baffle is arranged at the contact position of the ejector rod and the drain, and the baffle is used for blocking the drain. The self-cleaning of the filter screen can be realized while the filtering function of the filter is realized, and the maintenance times and the maintenance cost can be reduced. Through the setting of lower extreme piston, can also use the lower extreme piston to clean the filter screen inner wall when controlling opening and close of first water inlet, through lower extreme piston bottom and ejector pin effect, can further control the opening and close of drain.

Description

Self-cleaning filter

Technical Field

The application relates to the technical field of filtration, in particular to a self-cleaning filter.

Background

Currently, a filter is an indispensable device on a pipeline for conveying media, and filters water to be treated and blocks and separates impurities. The filter is used as core equipment, can effectively reduce impurity entering, slows down the system jam. The filter is mainly divided into a net filter, a lamination type filter, a cyclone and the like. However, the current mesh filter mainly has the problems of filter screen blockage, deformation of the filter screen in the use process, complex maintenance and the like, and can bring a lot of troubles to production and life. A low cost, maintenance-friendly filter device is needed for this situation.

Disclosure of Invention

An object of an embodiment of the present application is to provide a filter capable of achieving a self-cleaning function.

Specifically, the application provides a self-cleaning filter, including inlet tube, filter tube, ejector pin and drain.

The water inlet pipe is provided with a first water inlet at the periphery side, a lower end piston is arranged in the water inlet pipe, the lower end piston moves along the axial direction of the water inlet pipe, when the lower end piston moves above the first water inlet, the first water inlet is opened, and water outside the water inlet pipe flows into the water inlet pipe; when the lower end piston moves below the first water inlet, the first water inlet is closed, and the crystal outside the water inlet pipe flows to the top of the lower end piston from the first water inlet.

The filter pipe is connected with the bottom of the water inlet pipe, a coaxial sleeve filter screen is arranged in the filter pipe, and a water outlet is arranged on the side part of the filter pipe.

The ejector rod is arranged at the axis of the filter screen and is arranged along the axial direction of the filter screen, and penetrates through the filter screen and extends downwards.

The drain is arranged below the filter pipe, the ejector rod extends downwards through the drain, a baffle is arranged at the contact position of the ejector rod and the drain, and the baffle is used for blocking the drain.

In one embodiment, the filter screen is a cylindrical filter screen, the inner diameter of the water inlet pipe is the same as the inner diameter of the filter screen, and the circumferential edge of the lower end piston is in contact with the inner wall of the water inlet pipe and the inner wall of the filter screen.

In one embodiment, the filter tube further comprises a drain pipe coaxially arranged at the bottom, the drain pipe is an inverted conical pipe, and the drain outlet is arranged at the bottom end of the drain pipe.

In one embodiment, the bottom of the outside of the filter tube is provided with a support, the axis of the bottom of the support is provided with a sliding hole, the bottom of the ejector rod is slidably connected in the sliding hole, the ejector rod is sleeved with a pressure spring, and the pressure spring is arranged between the support and the baffle.

In one embodiment, the water inlet pipe is provided with a plurality of first water inlets, and the plurality of first water inlets are uniformly distributed on the periphery side of the bottom of the water inlet pipe.

In one embodiment, a second rack extends upwards from the top of the lower end piston, the second rack is in meshed connection with a rotating gear, and the rotating gear rotates to control the lower end piston to move vertically.

In one embodiment, the top of the water inlet pipe is coaxially connected with a T-shaped pipeline, and the T-shaped pipeline is communicated with the water inlet pipe; the T-shaped pipeline and the outer side of the water inlet pipe are coaxially sleeved with a buffer pipeline, a second water inlet is formed in the top of the T-shaped pipeline, filtered water flows into the buffer pipeline through the second water inlet, and then flows into the filter screen through the first water inlet of the water inlet pipe.

In one embodiment, the T-shaped conduit comprises a first conduit and a second conduit, the first conduit having a diameter greater than a diameter of the second conduit; the diameter of the second pipeline is smaller than that of the water inlet pipe.

In one embodiment, an upper end piston is arranged in the T-shaped pipeline, the upper end piston is coaxially arranged at the upper part of the lower end piston, a first rack is downwards extended from the bottom of the upper end piston, the first rack and the second rack are in meshed connection through a rotating gear, and the rotating gear rotates and simultaneously controls the upper end piston and the lower end piston to move vertically; the first rack is arranged in the first pipeline, and the rotating gear is arranged in the second pipeline.

In one embodiment, a water pipe is arranged at the top of the first pipeline and is communicated with the water pipe, and the water pipe is used for inputting water to be filtered.

Compared with the prior art, the beneficial effects of this application are:

in the technical scheme of this application, when realizing the filtration function of filter, can realize the self-cleaning to the filter screen, can reduce maintenance number of times and maintenance cost. Through the setting of lower extreme piston, can also use the lower extreme piston to clean the filter screen inner wall when controlling opening and close of first water inlet, and through lower extreme piston bottom and ejector pin effect, can further control the opening and close of drain.

Drawings

Fig. 1 is a front view of a self-cleaning filter according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of fig. 1 of a self-cleaning filter according to an embodiment of the present utility model.

Fig. 3 is a left side view of a self-cleaning filter according to an embodiment of the present utility model.

Fig. 4 is a cross-sectional view of fig. 3 of a self-cleaning filter according to an embodiment of the present utility model.

Fig. 5 is a schematic diagram showing the assembly of an upper end piston and a lower end piston in a self-cleaning filter according to an embodiment of the present utility model.

Wherein reference numerals are as follows:

1. a water pipe; 2. hexagonal flange face bolts; 3. a servo motor; 4. a filter tube; 5. a sewage drain pipe; 6. a pressure spring; 7. a third water inlet; 7A, a second water inlet; 7B, a first water inlet; 8. a water outlet; 9. an upper end piston; 10. a lower end piston; 11. a push rod; 12. a filter screen; 13. a baffle; 14. a bracket; 15. a first rack; 16. rotating the gear; 17. and a second rack.

Detailed Description

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present utility model and are not intended to be limiting.

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

Referring to fig. 1 to 5, the present application provides a self-cleaning filter comprising a water inlet pipe, a filter pipe 4, a push rod 11 and a drain outlet. The first water inlet 7B is arranged on the periphery of the water inlet pipe, the lower end piston 10 capable of moving up and down is arranged in the water inlet pipe, and when the lower end piston 10 moves above the first water inlet 7B, the first water inlet 7B is opened, and water outside the water inlet pipe flows into the water inlet pipe. When the lower end piston 10 moves below the first water inlet 7B, the first water inlet 7B is closed, and the crystal first water inlet 7B outside the water inlet pipe flows to the top of the lower end piston 10. The filter pipe 4 is connected with the bottom of the water inlet pipe, a coaxial sleeve filter screen is arranged in the filter pipe 4, and a water outlet 8 is arranged at the lateral part of the outer side of the filter pipe 4. The ejector rod 11 is arranged at the axis of the filter screen 12 and is arranged along the axial direction of the filter screen, and the ejector rod 11 penetrates through the filter screen and extends downwards. The drain is arranged at the bottom end of the filter pipe 4, the ejector rod 11 extends downwards through the drain, a baffle 13 is arranged at the contact position of the ejector rod 11 and the drain, and the baffle 13 is used for closing the drain. After the lower end piston 10 moves downwards and contacts with the top of the ejector rod 11, the lower end piston 10 continuously presses the ejector rod 11 downwards, dirt on the inner side of the filter screen is scraped off by the periphery side of the lower end piston 10, and meanwhile, the baffle 13 is far away from the drain outlet, so that the drain outlet is opened.

The filter 12 is a cylindrical filter 12, the inner diameter of the water inlet pipe is the same as the inner diameter of the filter 12, and the circumferential edge of the lower piston 10 is in contact with the inner wall of the water inlet pipe and the inner wall of the filter 12.

The filter pipe 4 also comprises a sewage drain pipe 5 coaxially arranged at the bottom, the sewage drain pipe 5 is an inverted conical pipe, the sewage drain is arranged at the bottom end of the sewage drain pipe 5, and the sewage drain can be more smooth by combining the structural characteristics of the inverted conical pipe under the action of gravity of sewage during sewage.

In one embodiment, the sewage drain pipe 5 is connected to the lower part of the filter pipe 4 through threads, and when the sewage drain pipe 5 needs to be cleaned, the sewage drain pipe 5 is removed in a rotating way.

In one embodiment, a support 14 is provided at the bottom end of the outside of the filter tube 4, the support 14 being used to support the filter provided herein. The bottom axle center of the bracket 14 is provided with a sliding hole, the bottom of the ejector rod 11 is connected in the sliding hole in a sliding way, the ejector rod 11 is sleeved with a pressure spring 6, and the pressure spring 6 is arranged between the bracket 14 and the baffle 13. The pressure spring 6 is used for resetting the ejector rod 11, specifically, after the lower end piston 10 moves upwards, the top end of the ejector rod 11 is not pressed any more, the bottom of the ejector rod 11 can be reset by the resilience force of the pressure spring 6, and the baffle 13 on the ejector rod 11 plugs the sewage outlet so as to enable the sewage outlet to be closed.

In one embodiment of the jack 11, the jack 11 is formed in a stepped shape in the axial direction, and the diameter of the jack 11 from top to bottom sequentially increases. The part with larger diameter at the lower part can block the sewage outlet, and can replace the baffle 13 to control the opening and closing of the sewage outlet.

In one embodiment, the top of the ejector rod 11 is provided with a force plate, and the force plate is used for abutting against the lower end piston 10, and the diameter of the force plate is larger than that of the top of the ejector rod 11, so that the contact area with the lower end piston 10 can be increased.

In one embodiment of the drain, the drain may be provided in an inverted cone shape.

In one embodiment, the plurality of first water inlets 7B are formed in the bottom of the water inlet pipe, and the plurality of first water inlets 7B are uniformly distributed on the periphery of the water inlet pipe. After the water flows into the first water inlet 7B, the kinetic energy of the water flow can be consumed, so that the impact on the filter screen 12 is reduced, and the service life of the filter is prolonged.

In one embodiment, the top of the lower end piston 10 protrudes upwards to form a second rack 17, the second rack 17 is in meshed connection with a rotating gear 16, and the rotating gear 16 rotates to control the lower end piston 10 to move vertically.

Specifically, when the rotary gear 16 rotates in the clockwise direction, the second rack 17 moves downward, and the lower end piston 10 moves downward. When the rotation gear 16 rotates in the counterclockwise direction, the second rack 17 moves upward, and the lower end piston 10 moves upward. The rotary gear 16 is in transmission connection with the output shaft of the servomotor 3. The working state of the lower end piston 10 is controlled and changed by controlling the rotation direction and the rotation speed of the servo motor 3.

The servo motor 3 is installed at the outer side of the second pipe, and the output shaft of the servo motor 3 extends into the second pipe and is in transmission connection with the rotating gear 16 to control the rotation of the rotating gear 16.

In one embodiment, the top of the water inlet pipe is coaxially connected to a T-shaped pipe, which communicates with the water inlet pipe. The buffer pipeline is coaxially sleeved on the outer side of the T-shaped pipeline and the outer side of the water inlet pipe, the second water inlet 7A is formed in the top of the T-shaped pipeline, water to be filtered flows into the buffer pipeline through the second water inlet 7A, and then flows into the filter screen 12 through the first water inlet 7B.

It should be noted that, as shown in fig. 5, the T-shaped pipe includes a first pipe and a second pipe, and the diameter of the first pipe is larger than that of the second pipe. The diameter of the water inlet pipe is larger than that of the second pipeline. The T-shaped pipeline is communicated with the water inlet pipe to form an I-shaped pipeline.

In one embodiment, the upper piston 9 is coaxially disposed within the T-shaped pipe, the outer diameter of the upper piston 9 being the same as the inner diameter of the first pipe. The upper end piston 9 is coaxially arranged at the upper part of the lower end piston 10, the bottom of the upper end piston 9 is downwards extended to form a first rack 15, the first rack 15 and the second rack 17 are all in meshed connection through a rotating gear 16, and the rotating gear 16 rotates to control the upper end piston 9 and the lower end piston 10 to move vertically.

Specifically, as shown in fig. 5, the first rack 15 is disposed in the first pipe, and the rotary gear 16 is disposed in the second pipe. When the upper end piston 9 slides to the top of the second water inlet 7A, the second water inlet 7A is closed, and water inflow is stopped. When the upper piston 9 slides to the bottom of the second water inlet 7A, the second water inlet 7A is opened, and water starts to enter the buffer pipe.

In one embodiment, the first pipe extends upwards, the water pipe 1 is arranged at the top of the first pipe and is communicated with the water pipe 1, and the water pipe 1 is used for inputting water to be filtered.

A plurality of third water inlets 7 are uniformly distributed on the periphery of the top of the first pipeline, water to be filtered in the water pipe 1 flows into the first pipeline through the third water inlets 7 and flows into the buffer pipeline through the second water inlets 7A.

In one embodiment, the bottom of the water pipe 1 is detachably connected with the top of the first pipeline through a flange plate and a plurality of hexagonal flange face bolts 2. The water delivery pipe 1 is a three-way pipe.

In one embodiment, the baffle 13 is umbrella-shaped, the top of the baffle 13 is an arc surface, the arc surface is used for blocking the sewage outlet, the bottom of the baffle 13 is a plane, and the plane is abutted with the top of the pressure spring 6.

In one embodiment, the first water inlet 7B, the second water inlet 7A and the third water inlet 7 are square small holes. On the one hand, the filter can be filled with water, and larger impurities in the water can be intercepted, so that the water is prevented from entering the filter to influence normal operation.

In operation, in the process that the servo motor 3 rotates clockwise and the upper end piston 9 moves from the top to the lower part, firstly, water to be filtered is sucked into the first pipeline through the third water inlet 7. When the upper end piston 9 descends to the bottom of the second water inlet 7A, the lower end piston 10 simultaneously ascends to the top of the first water inlet 7B, at this time, the first water inlet 7B and the second water inlet 7A are both opened, water to be filtered flows into the buffer pipeline through the second water inlet 7A, and flows into the filter screen 12 through the first water inlet 7B of the water inlet pipe for filtering.

When the servo motor 3 rotates in the anticlockwise direction, the upper end piston 9 moves upwards to the top of the second water inlet 7A, the second water inlet 7A is closed, and water cannot flow into the buffer pipeline any more. Simultaneously, the lower piston 10 moves downward to squeeze out the water in the filter screen 12, and the filtered water flows out through the water outlet. When the lower end piston 10 continues to move downwards, the lower end piston 10 is contacted with the stress surface of the ejector rod 11, and the ejector rod 11 continues to push downwards, so that the drain outlet is opened, and at the moment, the lower end piston 10 extrudes the residual water and impurities scraped from the filter screen 12 from the drain outlet.

When the lower end piston 10 moves upwards again, residual water outside the filter screen 12 is reversely adsorbed, so that impurities remained on the inner side surface of the filter screen 12 fall off, and the aim of backwashing the filter screen 12 is fulfilled.

When the lower end piston 10 reciprocates in the filter 12, the deformed filter 12 can be restored by the circumferential side surface of the lower end piston 10 contacting the inner wall of the filter 12.

In summary, the present application can realize self-cleaning of the filter screen 12 while realizing the filtering function of the filter, and can reduce the maintenance times and maintenance costs. Through the setting of lower extreme piston 10, can also use lower extreme piston 10 to clean filter screen 12 inner wall when controlling opening and close of first water inlet 7B, and through lower extreme piston 10 bottom and ejector pin 11 effect, can further control the opening and close of drain.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims (10)

1. A self-cleaning filter, comprising:

the water inlet pipe is provided with a first water inlet at the periphery side, a lower end piston is arranged in the water inlet pipe, the lower end piston moves along the axial direction of the water inlet pipe, when the lower end piston moves above the first water inlet, the first water inlet is opened, and water outside the water inlet pipe flows into the water inlet pipe; when the lower end piston moves below the first water inlet, the first water inlet is closed, and the crystal outside the water inlet pipe flows to the top of the lower end piston from the first water inlet;

the filter pipe is connected with the bottom of the water inlet pipe, a coaxial sleeve filter screen is arranged in the filter pipe, and a water outlet is arranged at the side part of the filter pipe;

the ejector rod is arranged at the axis of the filter screen and is arranged along the axial direction of the filter screen, and the ejector rod penetrates through the inside of the filter screen and extends downwards;

the drain is arranged below the filter pipe, the ejector rod extends downwards through the drain, a baffle is arranged at the contact position of the ejector rod and the drain, and the baffle is used for blocking the drain.

2. The self-cleaning filter according to claim 1, wherein the filter screen is a cylindrical filter screen, the inner diameter of the water inlet pipe is the same as the inner diameter of the filter screen, and the circumferential edge of the lower end piston is in contact with the inner wall of the water inlet pipe and the inner wall of the filter screen.

3. The self-cleaning filter of claim 2, wherein the filter tube further comprises a drain tube coaxially disposed at the bottom, the drain tube is an inverted conical tube, and the drain outlet is disposed at the bottom end of the drain tube.

4. The self-cleaning filter according to claim 3, wherein a support is arranged at the bottom end of the outer side of the filter tube, a sliding hole is arranged at the axis of the bottom of the support, the bottom of the ejector rod is slidably connected in the sliding hole, a pressure spring is sleeved on the ejector rod, and the pressure spring is arranged between the support and the baffle.

5. The self-cleaning filter according to claim 4, wherein a plurality of first water inlets are formed in the water inlet pipe, and the plurality of first water inlets are uniformly distributed on the bottom peripheral side of the water inlet pipe.

6. The self-cleaning filter of claim 5, wherein a second rack extends upward from the top of the lower piston, the second rack is in meshed connection with a rotating gear, and the rotating gear rotates to control the lower piston to move vertically.

7. The self-cleaning filter of claim 6, wherein the top of the water inlet tube is coaxially connected to a T-shaped tube, the T-shaped tube being in communication with the water inlet tube; the T-shaped pipeline and the outer side of the water inlet pipe are coaxially sleeved with a buffer pipeline, a second water inlet is formed in the top of the T-shaped pipeline, filtered water flows into the buffer pipeline through the second water inlet, and then flows into the filter screen through the first water inlet of the water inlet pipe.

8. The self-cleaning filter of claim 7, wherein the T-shaped conduit comprises a first conduit and a second conduit, the first conduit having a diameter greater than a diameter of the second conduit; the diameter of the second pipeline is smaller than that of the water inlet pipe.

9. The self-cleaning filter according to claim 8, wherein an upper end piston is arranged in the T-shaped pipeline, the upper end piston is coaxially arranged at the upper part of the lower end piston, a first rack is downwards extended from the bottom of the upper end piston, the first rack and the second rack are in meshed connection through a rotating gear, and the rotating gear rotates and simultaneously controls the upper end piston and the lower end piston to vertically move; the first rack is arranged in the first pipeline, and the rotating gear is arranged in the second pipeline.

10. The self-cleaning filter according to claim 9, wherein a water pipe is provided at the top of the first pipe and is communicated with the water pipe, and the water pipe is used for inputting water to be filtered.

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