Self-cleaning filter

Abstract

The utility model innovatively provides a self-cleaning filter which comprises a water inlet, a water outlet, an air inlet and an air outlet which are arranged on a barrel, a water distribution partition plate, an upper cavity and a lower cavity are arranged in the barrel, the upper cavity and the lower cavity are formed by the water distribution partition plate in a partition mode, and the water inlet and the air outlet are both communicated with the upper cavity. The water outlet and the air inlet are both communicated with the lower cavity, the water distribution partition plate is horizontally arranged in the barrel, a plurality of through holes are evenly formed in the water distribution partition plate, water filtering caps are arranged in the through holes, an air distribution main pipe is arranged outside the barrel, one end of the air distribution main pipe penetrates through the air inlet and is horizontally arranged below the water distribution partition plate, and the other end of the air distribution main pipe penetrates through the air inlet and is horizontally arranged below the water distribution partition plate. A plurality of air outlet holes are formed in the air distribution main pipe arranged in the cylinder body, and all the air outlet holes face the side where the water distribution partition plate is located; the air distribution main pipe is utilized to introduce air into the filter, the air can uniformly enter the filter through the air supply main pipe, and all filter materials in the filter can be in contact with the air.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering equipment, and more specifically to a self-cleaning filter. Background Art

[0002] A medium filter is a high-efficiency filtering device that uses a filter medium to remove various suspended solids, microorganisms and other fine particles in the water, ultimately achieving the effect of reducing water turbidity and purifying water quality. Commonly used filter materials include quartz sand, activated carbon, manganese sand, fiber, etc. The water to be filtered passes through the filter material layer, and the pollutants are trapped on the upper surface of the medium, and fine dirt and other floating organic matter are trapped inside the medium layer, so that the discharged water meets the requirements. Since the number of impurities that the medium filter material can adsorb is fixed, when the pollutants on the filter material reach a certain number, the filtering effect of the filter becomes worse. At present, the filter is mainly cleaned by air-water backwashing. When air scrubbing is performed, air enters the filter directly from the air inlet for cleaning. Since the air enters from the air inlet on one side, during the scrubbing process, the filter material far away from the air inlet side is exposed to less air and the cleaning force is relatively small. In order to ensure that all the filter materials in the filter are scrubbed, a lot of time is required, and the filter material close to the air inlet side is repeatedly scrubbed ineffectively, which prolongs the scrubbing time of the filter. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a self-cleaning filter to overcome the above-mentioned defects in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A self-cleaning filter comprises a cylinder, on which a water inlet, a water outlet, an air inlet and an air outlet are provided, a water distribution baffle and an upper cavity and a lower cavity separated by the water distribution baffle are provided in the cylinder, filter material is placed in the upper cavity, the water inlet and the air outlet are both communicated with the upper cavity, the water outlet and the air inlet are both communicated with the lower cavity, the water distribution baffle is horizontally arranged in the cylinder, a plurality of through holes are evenly arranged on the water distribution baffle, a plurality of through holes are each provided with a water filter cap, an air distribution main pipe is arranged outside the cylinder, one end of the air distribution main pipe passes through the air inlet and is horizontally arranged below the water distribution baffle, a plurality of air outlet holes are arranged on the air distribution main pipe arranged in the cylinder, and the air outlet holes are all facing the side where the water distribution baffle is located.

[0006] Preferably, a plurality of first air distribution branch pipes and a plurality of second air distribution branch pipes are horizontally arranged on the air distribution main pipe arranged in the cylinder, the plurality of first air distribution branch pipes are parallel to the air distribution main pipe, the plurality of second air distribution branch pipes cross-intersect and communicate with any one of the first air distribution branch pipes at the same time, and the plurality of second air distribution branch pipes are communicated with the air distribution main pipe.

[0007] Preferably, the air distribution main pipe arranged in the cylinder is horizontally wound with the center line of the cylinder as the center of the circle.

[0008] Preferably, a support seat is provided on the inner wall of the lower cavity, and the support seat includes a fixing plate and a mounting plate. The fixing plate is fixedly connected to the inner wall of the lower cavity, the mounting plate is vertically arranged at the upper end of the fixing plate, and the air distribution main pipe is fixedly connected to the mounting plate.

[0009] Preferably, the water inlet and the air outlet are both arranged at the top of the upper cavity, a water distributor communicating with the water inlet is arranged in the upper cavity, and the air outlet is located above the water distributor.

[0010] Preferably, several groups of third air distribution branch pipes are provided on the inner wall of the cylinder, one end of several groups of the third air distribution branch pipes are connected to the main air distribution pipe, the other ends of several groups of the third air distribution branch pipes pass through the water distribution baffle and extend into the upper cavity, and several groups of the third air distribution branch pipes are provided with several air outlet holes opening toward the center of the cylinder.

[0011] The beneficial effects of the utility model are as follows: an air distribution main pipe is arranged below the water distribution baffle, and air is introduced into the filter by means of the air distribution main pipe. During the air scrubbing process, air can evenly enter the filter through the air supply main pipe, so that the air diffusion is more even and the filter material in the filter can be in contact with the air; a plurality of groups of air distribution branch pipes or air distribution main pipes are arranged on the air distribution main pipe horizontally around the center line of the filter, thereby expanding the coverage area of ​​the air distribution pipeline in the filter and making the air diffusion area larger; a support seat is arranged on the inner wall of the filter, one end of the support seat is fixed on the inside of the filter, and the other end of the support seat is fixedly connected to the distribution branch pipe, and the support seat is used to realize the installation of the air distribution main pipe, ensuring that the installation of the air distribution main pipe is more stable during the air distribution process and no vibration occurs during the air supply process; the air-water mixture backwashing filter is adopted to save the backwashing water volume, shorten the backwashing time and improve the backwashing quality; at the same time, it is avoided that the filter material in the filter is compacted and affects the use effect of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the overall structure diagram of the utility model;

[0013] Figure 2 This is a structural diagram of an air distribution main pipe of the utility model;

[0014] Figure 3 This is another structural diagram of the air distribution main pipe of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the support base of the utility model.

[0016] Figure numerals: 1. Cylinder; 11. Water inlet; 12. Water outlet; 13. Air inlet; 14. Air outlet; 15. Upper cavity; 16. Lower cavity; 2. Water distribution baffle; 21. Through hole; 22. Water filter cap; 3. Air distribution main pipe; 31. Air outlet; 32. First air distribution branch pipe; 33. Second air distribution branch pipe; 34. Third air distribution branch pipe; 4. Support seat; 41. Fixing plate; 42. Mounting plate; 5. Water distributor. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0020] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0021] The medium filters currently used in the market are prone to uneven air scrubbing force on the filter material during backwashing; the utility model provides a self-cleaning filter, which makes the force on the filter material more uniform during the air scrubbing process.

[0022] like Figure 1 The filter comprises a cylinder 1, on which a water inlet 11, a water outlet 12, an air inlet 13 and an air outlet 14 are arranged, a water distribution baffle 2 and an upper cavity 15 and a lower cavity 16 separated by the water distribution baffle 2 are arranged in the cylinder 1, a filter material is placed in the upper cavity 15, and the filter material is placed on the water distribution baffle 2; the water inlet 11 and the air outlet 14 are arranged at the upper end of the upper cavity 15 and communicate with the upper cavity 15, and the water outlet 12 and the air inlet 13 are arranged below the water distribution baffle 2 and communicate with the lower cavity 16; During the filtration process, the filtrate enters the upper cavity 15 through the water inlet 11 and contacts the filter material. After being filtered by the filter material, it enters the lower cavity 16 and is discharged through the water outlet 12. A water distributor 5 is provided in the upper cavity 15. The water distributor 5 is communicated with the water inlet 11. The water distributor 5 is used to ensure that the filtered water can contact the filter material more evenly. The air outlet 14 is provided above the water distributor 5. During the gas-water backwashing process, the cleaning water is discharged through the water inlet 11, and the gas overflows and is discharged through the air outlet 14 to achieve gas-liquid separation.

[0023] A plurality of through holes 21 are evenly arranged on the water distribution baffle 2, and a water filter cap 22 is arranged in each of the through holes 21. During the backwashing process, the cleaning water enters the lower cavity 16 through the water outlet 12, and the cleaning water in the lower cavity 16 enters the upper cavity 15 through the water filter cap 22 and contacts the filter material.

[0024] like Figure 1 , Figure 2 , Figure 3As shown, an air distribution pipe 3 is arranged outside the filter plate, one end of which passes through the air inlet 13 and is horizontally arranged below the water distribution baffle 2, and a plurality of air outlet holes 31 are arranged on the air distribution pipe 3, and the air outlet holes 31 are all facing the water distribution baffle 2; during the backwashing process, the gas in the air distribution pipe 3 enters the lower cavity 16 through the air outlet holes 31, and at the same time, the gas moves upward through the water distribution baffle 2 and contacts the filter material placed on the water distribution baffle 2, and is used to disturb the filter material. The air distribution main pipe 3 is also provided with a plurality of first air distribution branch pipes 32 and a plurality of second air distribution branch pipes 33. The plurality of first air distribution branch pipes 32 are parallel to the air distribution main pipe 3 and are located on the same plane. The plurality of second air distribution branch pipes 33 are cross-intersected and communicated with any first air distribution branch pipe 32. At the same time, the second air distribution branch pipes 33 are cross-intersected and communicated with the air distribution main pipe 3. A plurality of air outlet holes 31 are provided, and the first air distribution branch pipe 32, the second air distribution branch pipe 33 and the air distribution main pipe 3 are staggered to increase the area of ​​gas entering the water distribution baffle 2, so that the contact between the filter material and the gas is more uniform; at the same time, due to the staggered arrangement of the first air distribution branch pipe 32, the second air distribution branch pipe 33 and the air distribution main pipe 3, while increasing the gas diffusion area, it does not affect the filtered water of the upper cavity 15 entering the lower cavity 16 and then being discharged, and the cleaning water of the lower cavity 16 entering the upper cavity 15; the first air distribution branch pipe 32, the second air distribution branch pipe 33 and the air distribution main pipe 3 can be connected by flanges, clamps or welding, so that the connection between the three is more stable (another embodiment: the air distribution main pipe 3 arranged in the cylinder 1 is horizontally wound with the center line of the cylinder 1 as the center of the circle, and the horizontally wound air distribution branch pipe is adopted. While not affecting the normal passage of filtered water and cleaning water, the gas diffusion area is increased, so that during the air scrubbing process, the contact between the filter material and the gas is more sufficient).

[0025] like Figure 1 , Figure 4 As shown, a support seat 4 is arranged on the inner wall of the lower cavity 16, and the support seat 4 includes a fixing plate 41 and a mounting plate 42. The fixing plate 41 is fixedly connected to the side wall of the lower cavity 16, and the mounting plate 42 is vertically arranged at the upper end of the fixing plate 41, and has an L-shaped structure, and the air distribution main pipe 3 is fixedly connected to the mounting plate 42; the support seat 4 and the air inlet 13 are arranged on the cylinder 1 opposite to each other, and one end of the air distribution main pipe 3 extends into the cylinder 1 through the air inlet 13 and is fixedly arranged on the support seat 4, and the support seat 4 and the air inlet 13 are used to ensure that the installation of the air distribution main pipe 3 in the cylinder 1 is more stable; a plurality of support seats 4 are also arranged on the inner wall of the lower cavity 16, and the first air distribution main pipe 3 and the second air distribution main pipe 3 are respectively pressed on the support seat 4, and the support seat 4 is used to realize fixed support of the first air distribution branch pipe 32 and the second air distribution branch pipe 33 to ensure a more stable installation.

[0026] like Figure 1 As shown, a plurality of groups of third air distribution branch pipes 34 are arranged on the inner wall of the cylinder 1, one end of the plurality of third air distribution branch pipes 34 is communicated with the main air distribution pipe 3, the other end of the third air distribution branch pipe 34 passes through the water distribution baffle 2 and extends into the upper cavity 15, and the third air distribution branch pipes 34 arranged in the upper cavity 15 are all provided with air outlet holes 31 opening toward the center of the cylinder 1. By utilizing the third air distribution branch pipes 34, during the gas flushing process, compressed air can flush the filter material from bottom to top through the main air distribution pipe 3, the first air distribution branch pipe 32 and the second air distribution branch pipe 33, and the third air distribution branch pipes 34 are utilized to flush the filter material all around, so that the filter material can be scrubbed more fully.

[0027] Working principle: During the cleaning process, the cleaning water enters the lower cavity 16 through the water outlet 12, and cleans the filter material in the upper cavity 15 through the water filter cap 22; at the same time, the compressed air enters the lower cavity 16 through the air distribution main pipe 3, and the gas overflows and contacts the filter material after passing through the water distribution baffle 2. Due to the impact force of the gas, the filter material rolls up and down and collides with each other, and the filter material is scrubbed, and the suspended matter, colloid, fine particles adsorbed on the surface of the filter material are redissolved in water and discharged with the cleaning water; during the filtration process, if the filter has not been cleaned for a long time or the turbidity of the incoming water is high, the filter material is prone to compaction, and the compacted filter material cannot be broken up and cleaned by simply backwashing with cleaning water; using a gas-water mixed backwashing filter, during the cleaning process, the backwashing water volume can be saved by 35%, and the backwashing time can be saved by 35%; at the same time, the filter material in the filter will not be compacted, which affects the use effect of the filter.

[0028] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A self-cleaning filter, comprising a cylinder (1), the cylinder (1) being provided with an air inlet (13) and an air outlet (14), the cylinder (1) being provided with a water distribution baffle (2) and an upper cavity (15) and a lower cavity (16) separated by the water distribution baffle (2), the upper cavity (15) being filled with filter material, characterized in that: The water distribution baffle (2) is horizontally arranged in the cylinder (1); a plurality of through holes (21) are evenly arranged on the water distribution baffle (2); a plurality of water filter caps (22) are arranged in the through holes (21); an air distribution main pipe (3) communicating with the air outlet (14) is horizontally arranged in the cylinder (1); the air distribution main pipe (3) is located below the water distribution baffle (2); a plurality of air outlet holes (31) are arranged on the air distribution main pipe (3) arranged in the cylinder (1); and the openings of the air outlet holes (31) face upward.

2. A self-cleaning filter according to claim 1, characterized in that: A plurality of first air distribution branch pipes (32) and a plurality of second air distribution branch pipes (33) are horizontally arranged on the air distribution main pipe (3) arranged in the cylinder (1); the plurality of first air distribution branch pipes (32) are all parallel to the air distribution main pipe (3); the plurality of second air distribution branch pipes (33) simultaneously cross and communicate with any one of the first air distribution branch pipes (32); and the plurality of second air distribution branch pipes (33) are all communicated with the air distribution main pipe (3).

3. A self-cleaning filter according to claim 1, characterized in that: The air distribution main pipe (3) disposed in the cylinder (1) is arranged horizontally around the center line of the cylinder (1) as the center of the circle.

4. A self-cleaning filter according to claim 1, characterized in that: A support seat (4) is arranged on the inner wall of the lower cavity (16), and the support seat (4) comprises a fixing plate (41) and a mounting plate (42). The fixing plate (41) is fixedly connected to the inner wall of the lower cavity (16), and the mounting plate (42) is vertically arranged on the upper end of the fixing plate (41). The air distribution main pipe (3) is fixedly connected to the mounting plate (42).

5. A self-cleaning filter according to claim 1, characterized in that: A plurality of groups of third gas distribution branch pipes (34) are also provided on the inner wall of the cylinder (1), one end of each of the groups of third gas distribution branch pipes (34) being in communication with the main gas distribution pipe (3), the other ends of each of the groups of third gas distribution branch pipes (34) passing through the water distribution baffle (2) and extending into the upper cavity (15), and each of the groups of third gas distribution branch pipes (34) being provided with a plurality of gas outlet holes (31) opening toward the center of the cylinder (1).

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