CN107362598A - A kind of self-cleaning filter - Google Patents

Abstract

The invention discloses a self-cleaning filter, which comprises a casing, on which a sewage discharge pipe and a first water inlet pipe are arranged, the sewage discharge pipe is located at the bottom of the casing, a filter element sleeve and a filter element are arranged inside the casing, and the lower end of the filter element sleeve It communicates with the sewage pipe, and there are a plurality of oblique holes evenly distributed on the side wall of the filter element sleeve. The filter element is located in the filter element sleeve. After the filter element sleeve is out, it is fixed on the bottom of the housing. The self-cleaning filter of the present invention solves the problem that the filter element needs to be replaced frequently in the existing filter when filtering and purifying.

Description

A self-cleaning filter

technical field

The invention belongs to the technical field of purification devices, and in particular relates to a self-cleaning filter.

Background technique

In the filtration and purification of sewage, it is necessary to use filter elements to remove solid particles in sewage. Most of the filter elements currently used will adhere to the surface after working for a period of time, which will affect the purification effect. In order to ensure the quality of filtration and purification, regular replacement of the filter element is often used to solve the problem. Although there is a filter on the market that removes impurities on the surface of the filter element by backwashing, the cycle of backwashing is short, the frequency of backwashing is high, and the cleaning effect is not ideal. Still need to replace the filter.

Contents of the invention

The purpose of the present invention is to provide a self-cleaning filter, which solves the problem that the filter core needs to be replaced frequently in the existing filter when filtering and purifying.

The technical solution adopted in the present invention is that the self-cleaning filter includes a casing, and the casing is provided with a sewage discharge pipe and a first water inlet pipe. The lower end of the sleeve is connected with the sewage pipe, and the side wall of the filter element sleeve is evenly distributed with a plurality of oblique holes. The filter element is located in the filter element sleeve. The lower end of the filter cartridge is fixed on the bottom of the shell after stretching out the filter element sleeve.

The present invention is also characterized in that:

The plurality of inclined holes are all inclined towards the same direction.

The plurality of slanted holes are arranged side by side in multiple rows, and the slanted holes on two adjacent rows are distributed alternately.

A water inlet is provided on the top of the housing, and the water inlet communicates with the filter sleeve.

The upper end of the housing is provided with a pressure ring, and the upper end of the filter element extends into the water inlet and is pushed against the lower end of the pressure ring.

Sealing gaskets are provided between the pressure ring and the housing, and between the filter element and the filter element seat.

It also includes a second water inlet pipe, the first water inlet pipe and the second water inlet pipe are both arranged at the bottom of the casing.

Both the water inlet end of the first water inlet pipe and the water inlet end of the second water inlet pipe are provided with filter screens.

The beneficial effects of the present invention are: when the self-cleaning filter of the present invention purifies sewage, the sewage is injected into the filter core in the form of swirl under the diversion action of the oblique hole on the side wall of the filter core sleeve, at this time, the solids in the sewage Even if the particles adhere to the surface of the filter element, they will be washed away under the action of the swirling flow of the sewage, which will not affect the filtering effect of the filter element, and there is no need to replace the filter element frequently.

Description of drawings

Fig. 1 is a structural schematic diagram of the self-cleaning filter of the present invention.

In the figure, 1. Filter element, 2. Shell, 3. Gasket, 4. Pressure ring, 5. Screw, 6. Inclined hole, 7. Filter sleeve, 8. Sewage pipe, 9. First water inlet pipe, 10. Second Two water inlet pipes, 11. filter element seat.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The self-cleaning filter of the present invention, as shown in Figure 1, includes a housing 2, the housing 2 is provided with a sewage pipe 8 and a first water inlet pipe 9, the sewage pipe 8 is located at the bottom of the housing 2, and the housing 2 is provided with a filter element sleeve 7 and The filter element 1, the lower end of the filter element cover 7 communicates with the sewage pipe 8, a plurality of oblique holes 6 are evenly distributed on the side wall of the filter element cover 7, the filter element 1 is located in the filter element cover 7, and the lower end of the filter element 1 is provided with a filter element seat 11, the filter element seat 11 is provided with water outlet, and the lower end of filter element seat 11 stretches out filter element cover 7 and is fixed on the bottom of shell 2.

When the self-cleaning filter of the present invention is purifying, the sewage pipe 8 is always in a closed state, and the sewage first enters the shell 1 from the first water inlet pipe 9, and then under the action of the diversion of the oblique hole 6 on the outer wall of the filter element sleeve 7, the sewage is rotated The swirling jet of sewage will generate erosion force on the solid particles attached to the surface of the filter element 1. At this time, the solid particles will be washed away by the sewage in time under the action of the erosion force, and will not Residues on the surface of the filter element 1 affect the filtering effect of the filter element. Therefore, the self-cleaning filter has its own cleaning function during filtration, and there is no need to replace the filter element frequently, which greatly prolongs the normal service life of the filter element 1.

After the solid particles are filtered out by the filter element 1, they will settle to the bottom of the filter element sleeve 7. After the self-cleaning filter has been purified for a period of time, the staff can regularly open the sewage pipe 8 to discharge the filtered solid particles from the sewage pipe 8. .

As shown in FIG. 1 , the plurality of inclined holes 6 are all inclined in the same direction.

All the inclined holes 6 are designed to be inclined in the same direction, which can ensure that the sewage ejected from the inclined holes 6 swirls in the same direction without interfering with each other, and the erosion force can reach the maximum at this time.

As shown in FIG. 1 , a plurality of inclined holes 6 are arranged side by side in multiple rows, and the inclined holes 6 in two adjacent rows are distributed alternately.

The oblique holes 6 on two adjacent rows are alternately distributed on the rotation track, which can ensure that the entire surface of the filter element 1 can be subjected to the erosion force, and eliminate the solid particles in the sewage adhering to the blind area that cannot be covered by the erosion force.

As shown in FIG. 1 , a water inlet is provided on the top of the housing 2 , and the water inlet communicates with the filter element sleeve 7 .

After the self-cleaning filter has been purified for a period of time, the staff can regularly add high-pressure water to the water inlet to backwash the filter element sleeve 7 through high-pressure water, so that the solid particles in the self-cleaning filter are discharged from the sewage pipe 8.

As shown in Figure 1, the pressure ring 4 is fixed on the upper end of the housing 2 by screws 5, the filter element 1 is installed in the filter sleeve 7, and its upper end extends into the water inlet and rests on the lower end of the pressure ring 4, and its lower end passes through the filter element holder 11 It is fixed on the bottom of the casing 2, has good stability during operation, and is also convenient for disassembly and maintenance.

As shown in Figure 1, a gasket 3 is used to seal between the pressure ring 4 and the housing 2, and between the filter element 1 and the filter seat 11. After the water inlet is closed, sewage can be prevented from flowing out from the gap between the pressure ring 4 and the housing 2. .

As shown in FIG. 1 , it also includes a second water inlet pipe 10 , and both the first water inlet pipe 9 and the second water inlet pipe 10 are arranged at the bottom of the casing 2 .

During work, the staff not only can enter water through the first water inlet pipe 9 and the second water inlet pipe 10 simultaneously, but also can independently enter water through the first water inlet pipe 9 or the second water inlet pipe 10 . When the first water inlet pipe 9 and the second water inlet pipe 10 enter water at the same time, the speed of the sewage swirling flow is the largest, so the erosion force on the surface of the filter element 1 is also the largest.

As shown in FIG. 1 , the water inlet end of the first water inlet pipe 9 and the water inlet end of the second water inlet pipe 10 are both provided with filter screens.

The water inlet end of the first water inlet pipe 9 and the water inlet end of the second water inlet pipe 10 are provided with a filter screen, which can preliminarily filter larger impurities in the sewage, reduce the workload of the filter element, thereby prolonging the service life of the self-cleaning filter.

The self-cleaning filter of the present invention solves the problem that the filter core needs to be replaced frequently when the existing filter is filtering and purifying.

Claims (8)

1. A kind of 1. self-cleaning filter, it is characterised in that including shell (2), be provided with the shell (2) blow-off pipe (8) and First water inlet pipe (9), the blow-off pipe (8) are located at the bottom of shell (2), filter core set (7) and filter core are provided with shell (2) (1), the lower end of filter core set (7) is connected with blow-off pipe (8), and multiple inclined holes (6), the filter are evenly equipped with the side wall of filter core set (7) Core (1) is located in filter core set (7), and the lower end of filter core (1) is provided with filter cartridge seat (11), and water outlet is provided with the filter cartridge seat (11) Mouthful, the bottom for being fixed on shell (2) is stretched out after filter core set (7) in the lower end of filter cartridge seat (11).
2. 2. self-cleaning filter according to claim 1, it is characterised in that the multiple inclined hole (6) is in the same direction Tilt.
3. 3. self-cleaning filter according to claim 2, it is characterised in that the multiple inclined hole (6) sets side by side in multiple rows of Put, and the inclined hole (6) on adjacent two row is interspersed.
4. 4. self-cleaning filter according to claim 1, it is characterised in that be provided with the top of the shell (2) into water Mouthful, the water inlet communicates with the filter core set (7).
5. 5. self-cleaning filter according to claim 4, it is characterised in that the upper end of the shell (2) is provided with trim ring (4), the upper end of the filter core (1) is stretched into the water inlet and withstands on the lower end of the trim ring (4).
6. 6. self-cleaning filter according to claim 5, it is characterised in that the trim ring (4) and the shell (2) it Between, between the filter core (1) and the filter cartridge seat (11) be provided with sealing gasket (3).
7. 7. self-cleaning filter according to claim 1, it is characterised in that also including the second water inlet pipe (10), described One water inlet pipe (9) is arranged at the bottom of the shell (2) with second water inlet pipe (10).
8. 8. self-cleaning filter according to claim 7, it is characterised in that the water inlet end of first water inlet pipe (9) with The water inlet end of second water inlet pipe (10) is provided with screen pack.