CN211864075U - An improved filter for wastewater pretreatment - Google Patents

Abstract

The utility model discloses an improved filter for waste water pretreatment, which comprises an outer cylinder, the outer wall of the outer cylinder is respectively connected with a water inlet port, a water outlet port and a backwashing port, and a multi-stage filtering structure is arranged inside the outer cylinder , the multi-stage filter structure is axially pressed and fixed by an end cover detachably installed at the end of the outer cylinder. The utility model has a simple structure, the waste water enters from the water inlet port, and is filtered through the coarse filter screen cylinder and the fine filter screen cylinder to realize the treatment of the waste water. At the same time, the drive motor drives the spiral brush to rotate to further clean the above impurities. The clean water passes the impurities through the coarse filter cartridge and discharges them from the water inlet interface to realize backwashing and prolong the service life of the equipment.

Description

An improved filter for wastewater pretreatment

technical field

The utility model relates to the technical field of filters, in particular to an improved filter for pretreatment of waste water.

Background technique

Wastewater refers to the general term for water discharged from residents' activities and runoff rainwater. It includes domestic sewage, industrial waste water and other useless water such as the inflow of primary rainwater into drainage pipes and canals; in the process of wastewater treatment, the one-stage filtration structure is used, and the filtration effect is poor, while the multi-stage filtration structure is used, although the filtration effect is relatively low. Good, but the fine solid particles are still easy to block the denser mesh screen, which ultimately reduces the filtration efficiency and reduces the service life of the equipment.

Utility model content

The purpose of the utility model is to propose an improved filter for pretreatment of waste water in order to solve the shortcomings in the prior art.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

An improved filter for pretreatment of waste water, comprising an outer cylinder, the outer wall of the outer cylinder is respectively connected with a water inlet port, a water outlet port and a backwashing port, the interior of the outer cylinder is provided with a multi-stage filtering structure, the multi-stage filtering The structure is axially compressed and fixed by an end cover detachably installed at the end of the outer cylinder.

Preferably, the multi-stage filtration structure includes a coarse filter cartridge and a fine filter cartridge located inside the outer cylinder, the coarse filter cartridge is set corresponding to the position of the water inlet interface, and the fine filter cartridge is located at the water outlet interface and the backwash interface respectively. Correspondingly, a fixing ring is provided between the connection between the coarse filter screen cylinder and the fine filter screen cylinder, and an inner wall cleaning structure is arranged in the fine filter screen cylinder.

Preferably, the inner wall cleaning structure includes a drive motor, the output end of the drive motor is connected to the input end of the reducer, the output end of the reducer is connected with a rotating shaft, the rotating shaft is rotatably connected with the outer cylinder, the rotating shaft is mounted with a spiral brush, the reducer Connected with the outer cylinder, the spiral brush is close to the inner wall of the fine filter cylinder.

Preferably, a gasket is provided between the end cover and the connection between the coarse screen cartridge, and the gasket has elasticity.

Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model has a simple structure, and the waste water enters from the water inlet interface, and is filtered through the coarse filter mesh cylinder and the fine filter mesh cylinder to realize the treatment of the waste water, and to the backwash interface. Clean water is injected into it to wash the impurities on the inner wall of the fine filter cylinder. At the same time, the drive motor drives the spiral brush to rotate to further clean the above impurities. The clean water passes the impurities through the coarse filter cylinder and discharges them from the water inlet to realize backwashing. , prolong the service life of the equipment.

Description of drawings

Figure 1 is a schematic diagram of the structure proposed by the utility model.

In the figure: end cap 1, outer cylinder 2, coarse filter cylinder 3, gasket 4, water inlet port 5, fixing ring 6, backwash port 7, water outlet port 8, fine filter screen cylinder 9, spiral brush 10, drive Motor 11, reducer 12.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

1, an improved filter for pretreatment of waste water includes an outer cylinder 2, and the outer wall of the outer cylinder 2 is respectively connected with a water inlet port 5, a water outlet port 8 and a backwash port 7, and the interior of the outer cylinder 2 is provided with a plurality of The multi-stage filter structure is axially pressed and fixed by the end cover 1 detachably installed at the end of the outer cylinder 2. In the process of wastewater treatment, the first-stage filter structure is used, and the filtering effect is poor, while the multi-stage filter structure is adopted. Although the filtration effect is relatively good, the fine solid particles are still easy to block the denser mesh screen, which ultimately reduces the filtration efficiency, and the above structure can solve such technical problems.

Among them, the multi-stage filtering structure includes a coarse filter mesh cylinder 3 and a fine filter mesh cylinder 9 located inside the outer cylinder 2. The coarse filter mesh cylinder 3 is arranged corresponding to the position of the water inlet interface 5, and the fine filter mesh cylinder 9 is respectively connected to the water outlet interface 8 and 9. The position of the backwash interface 7 is set correspondingly, a fixing ring 6 is arranged between the connection between the coarse filter cartridge 3 and the fine filter cartridge 9, and the fine filter cartridge 9 is provided with an inner wall cleaning structure. The waste water enters from the water inlet port 5 and passes through The coarse filter cartridge 3 is filtered, and the filtered sewage enters the fine filter cartridge 9. The fine filter cartridge 9 performs secondary filtration and is finally discharged from the water outlet 8. The coarser impurities are blocked outside the coarse filter cartridge 3. The finer impurities are blocked in the fine filter cartridge 9 .

The inner wall cleaning structure includes a drive motor 11, the output end of the drive motor 11 is connected to the input end of the reducer 12, the output end of the reducer 12 is connected with a rotating shaft, the rotating shaft is rotatably connected with the outer cylinder 2, and a spiral brush 10 is installed on the rotating shaft to reduce the speed. The gear 12 is connected with the outer cylinder 2, and the spiral brush 10 is close to the inner wall of the fine filter cylinder 9. The cleaning structure includes a drive motor 11, the output end of the drive motor 11 is connected to the input end of the reducer 12, and the output end of the reducer 12 is connected with a The rotating shaft is rotatably connected with the outer cylinder 2 , and a spiral brush 10 is installed on the rotating shaft.

When a lot of impurities accumulate, inject clean water into the backwash interface 7 to rinse the impurities on the inner wall of the fine filter cartridge 9, and at the same time drive the motor 11 to drive the spiral brush 10 to rotate to further clean the above impurities. The coarse filter cartridge 3 is discharged from the water inlet port 5 to realize backwashing and prolong the service life of the equipment.

A gasket 4 is provided between the connection between the end cover 1 and the coarse filter cylinder 3 . The gasket 4 has elasticity, and the coarse filter cylinder 3 and the fine filter cylinder 9 are clamped and fixed by the resilience of the gasket 4 .

In this case, the wastewater enters from the water inlet port 5 and is filtered through the coarse filter cartridge 3 and the fine filter cartridge 9 to realize the treatment of the wastewater. The impurities are rinsed clean, and at the same time, the driving motor 11 drives the spiral brush 10 to rotate to further clean the above impurities. The clean water passes the impurities through the coarse filter cartridge 3 and discharges them from the water inlet port 5 to realize backwashing and prolong the service life of the equipment.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (4)

1. The utility model provides an improved generation is filter for pretreatment of waste water, includes urceolus (2), and the outer wall of urceolus (2) communicates respectively has into water interface (5), play water interface (8) and back flush interface (7), its characterized in that, the inside of urceolus (2) is equipped with multi-stage filtration structure, and this multi-stage filtration structure carries out the axial by demountable installation in end cover (1) of urceolus (2) tip and compresses tightly fixedly.

2. The improved filter for wastewater pretreatment according to claim 1, wherein the multistage filtering structure comprises a coarse filtering screen cylinder (3) and a fine filtering screen cylinder (9) which are positioned inside the outer cylinder (2), the coarse filtering screen cylinder (3) is arranged corresponding to the water inlet interface (5), the fine filtering screen cylinder (9) is arranged corresponding to the water outlet interface (8) and the backwashing interface (7), a fixing ring (6) is arranged between the joints of the coarse filtering screen cylinder (3) and the fine filtering screen cylinder (9), and an inner wall cleaning structure is arranged in the fine filtering screen cylinder (9).

3. The improved filter for wastewater pretreatment of claim 2, wherein the inner wall cleaning structure comprises a driving motor (11), the output end of the driving motor (11) is connected with the input end of a speed reducer (12), the output end of the speed reducer (12) is connected with a rotating shaft, the rotating shaft is rotatably connected with the outer cylinder (2), a spiral brush (10) is mounted on the rotating shaft, the speed reducer (12) is connected with the outer cylinder (2), and the spiral brush (10) is tightly attached to the inner wall of the fine filter screen cylinder (9).

4. An improved filter for pretreatment of wastewater according to claim 2, characterized in that a gasket (4) is provided between the connection of said end cap (1) and coarse filter cylinder (3), said gasket (4) having elasticity.

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