CN215137214U - Backwashing filter device - Google Patents

Abstract

The utility model relates to a backwashing filter device, the power distribution box comprises a box body, be provided with horizontal filter plate in the box, horizontal filter plate separates the box for the filter chamber on upper portion and the clear water room of lower part, horizontal filter plate top is provided with the filter bed, be equipped with the water inlet on the box, the delivery port, back flush water inlet and back flush outlet, filter bed top is provided with the water inlet water-locator that is connected with the water inlet, horizontal filter plate below is provided with the back flush water-locator that is connected with the back flush water inlet, all be equipped with a plurality of water distribution holes on water inlet water-locator and the back flush water-locator, back flush water inlet pipe is connected with the high-pressure pulse gas air supply pipe on the road, the delivery port is linked together with the clear water room, the back flush outlet is linked together with the filter chamber. The backwashing filter device has the advantages that high-pressure pulse gas is connected in through a backwashing water inlet pipeline, is mixed with backwashing water and is discharged from the water distributor, the gas and the water are mixed more fully, the diffusion range is larger, the impact force on a filter material layer is balanced, and the effective backwashing effect is achieved.

Description

Backwashing filter device

Technical Field

The utility model relates to a filter technical field, concretely relates to back flush filter equipment.

Background

The quartz sand filtration is a common physical process for removing larger particles of impurities and suspended matters in water, and is an important prepositive process of a new water supply treatment system, a quartz sand filter material layer is used for a long time to collect the impurities in accumulated water, so that the filtering effect is deteriorated, and the back washing or the filter material layer replacement is required in time to ensure the water quality and the water yield of effluent through the reduction of the water yield. The existing backwashing filter device mostly adopts high-pressure water flow as a backwashing medium, the washing efficiency of a quartz sand filter layer with larger thickness is lower, part of the backwashing filter device adopts a gas-water mixed washing mode, usually, high-pressure air flow is sprayed towards a filter material layer by a nozzle or a gas distribution pipe to agitate the filter material layer, so that the backwashing water flow is easier to wash impurities in the filter material layer, and because the high-pressure air flow is sprayed towards a certain direction, the spraying range is limited to a certain extent, the high-pressure air flow is not easy to act on the whole filter material layer, the impact force on the filter material layer is not easy to be uniformly distributed, and the backwashing effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the defects of the prior art and provides a more sufficient backwashing filter device with the air-water mixing function. In order to solve the technical problem, the utility model adopts the following technical scheme:

a backwashing filter device comprises a box body, wherein a horizontal filter plate is arranged in the box body, the box body is divided into an upper filter chamber and a lower clean water chamber by the horizontal filter plate, a filter material layer is arranged above the horizontal filter plate, and a water inlet, a water outlet, a backwashing water inlet and a backwashing water outlet are formed in the box body; the water inlet distributor is arranged above the filter material layer and is connected with the water inlet, the back flush distributor is arranged below the horizontal filter plate and is connected with the back flush water inlet, a plurality of water distribution holes are formed in the water inlet distributor and the back flush distributor, a high-pressure pulse air supply pipe is connected to a water inlet pipeline of the back flush water inlet, the water outlet is communicated with the clean water chamber, the back flush water outlet is communicated with the filter chamber, and an air emptying valve is arranged above the box body.

Preferably, the water inlet, the water outlet, the backwashing water inlet and the backwashing water outlet are respectively provided with an electromagnetic control valve.

Preferably, the water inlet distributor and the backwashing water distributor both comprise water distribution pipes forming one or more closed loops, and the water distribution holes are distributed on the water distribution pipes.

Preferably, the high-pressure pulse gas supply pipe is provided with a check valve.

Preferably, a plurality of filter caps are arranged on the horizontal filter plate.

Preferably, a plurality of filter material partition plates are arranged in the filter chamber and are vertically connected to the horizontal filter plate.

Preferably, a manhole is arranged on the box body.

Preferably, the box body is a cuboid.

Furthermore, the backwashing filter device is formed by combining a plurality of box bodies in parallel.

Compared with the prior art, the beneficial effects of the utility model reside in that: the high-pressure pulse gas enters from the backwashing water inlet pipeline, is fully mixed with backwashing water and is discharged from the water distributor together to form a steam pocket, the steam pocket is continuously increased along with the rise of the water level and scours the filter material together with water flow, the distribution and diffusion of bubbles in the filter device are more uniform, and the impact efficiency on the filter material layer is higher; the filter material layers are arranged in a separated mode and are uniformly distributed in each separating partition, and the filter effect is not easily influenced by offset and accumulation during backwashing operation; the square box body is easier to be combined and arranged, and the occupied space is reduced.

Drawings

FIG. 1: the embodiment of the utility model provides a structure schematic diagram.

FIG. 2: the embodiment of the utility model provides a two schematic structure views.

FIG. 3: the back-wash water distributor is a schematic view of the structure from the top.

In each schematic diagram: 1. a box body; 2. a horizontal filter plate; 3. a filtering chamber; 4. a clear water chamber; 5. a filter material layer; 6. a water inlet; 7. a water outlet; 8. backwashing the water inlet; 9. back flushing the water outlet; 10. a water inlet distributor; 11. backwashing the water distributor; 12. water distribution holes; 13. a high-pressure pulse gas supply pipe; 14. an air evacuation valve; 15. an electromagnetic control valve; 16. a water distribution pipe; 17. a check valve; 18. a filter cap; 19. a filter material separator; 20. a manhole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

A backwashing filter device is shown in figures 1 and 2, and comprises a box body 1, wherein a horizontal filter plate 2 is arranged in the box body 1, the horizontal filter plate 2 divides the box body 1 into an upper filter chamber 3 and a lower clean water chamber 4, a filter material layer 5 is arranged above the horizontal filter plate 2, in general application, the filter material layer 5 adopts filter materials mainly containing quartz sand particles, preferably, a plurality of filter caps 18 are arranged on the horizontal filter plate 2, the horizontal filter plate 2 bears the quartz sand particles of the filter layer 5, and filtered clean water and backwashing water permeate through the filter caps 18; the box body 1 is provided with a water inlet 6, a water outlet 7, a backwashing water inlet 8 and a backwashing water outlet 9, a water inlet distributor 10 is arranged above the filter material layer 5, the water inlet distributor 10 is connected with the water inlet 6, a backwashing water distributor 11 is arranged below the horizontal filter plate 2, the backwashing water distributor 11 is connected with the backwashing water inlet 8, and a plurality of water distribution holes 12 are arranged on the water inlet distributor 10 and the backwashing water distributor 11. A high-pressure pulse air supply pipe 13 is connected on the water inlet pipeline of the back washing water inlet 8. The water outlet 7 is communicated with the clean water chamber 4, in the first embodiment, as shown in fig. 1, the water outlet 7 is arranged above the filter material layer 5, the water outlet 7 passes through the horizontal filter plate 2 through a pipeline to be communicated with the clean water chamber 4, and the filtered clean water is discharged from a high position through the residual pressure of the water inlet in the box body 1; in the second embodiment, as shown in fig. 2, the water outlet 7 is disposed below the box body 1, and the filtered clean water is discharged from a low position under the action of gravity. The back washing water outlet 9 is communicated with the filtering chamber 3, and an air emptying valve 14 is arranged above the box body 1 and used for adjusting the internal pressure of the box body 1. In a preferred embodiment, electromagnetic control valves 15 are arranged at the water inlet 6, the water outlet 7, the backwashing water inlet 8 and the backwashing water outlet 9, so that the processes of water inlet filtration and backwashing can be automatically controlled, and in addition, the manual control can be performed through common valves. The working process is as follows: when filtering, the electromagnetic control valves 15 at the water inlet 6 and the water outlet 7 are switched on, raw water is uniformly distributed on the filter material layer 5 through the water inlet distributor 10, and flows into the clear water chamber 4 after filtering, when the water level is full, the air emptying valve 14 is closed, and the filtered clear water is discharged from the water outlet 7; when the backwashing is needed, an electromagnetic control valve 15 at a backwashing water inlet 8 and a backwashing water outlet 9 is communicated, high-pressure pulse gas enters a backwashing water inlet pipe and is discharged from a backwashing water distributor 11 together with backwashing water to form a steam pocket, the steam pocket is continuously increased along with the rise of the water level and scours filter materials along with backwashing water flow, and impurities in the filter materials are discharged from the backwashing water outlet 9 along with the backwashing water. Compared with the prior art, the back washing device has the advantages of simple structure, reasonable layout and simple and convenient operation, the high-pressure pulse gas and the back washing water are fully mixed, the washing of the filter material layer 5 is more uniform and thorough, and the back washing device has better back washing effect.

In a preferred embodiment, each of the water inlet distributor 10 and the back-flush distributor 11 comprises one or more closed-loop water distribution pipes 16, the water distribution holes 12 are distributed on the water distribution pipes 16, the water distribution holes 12 on the water inlet distributor 10 are below the water distribution pipes 16, and the water distribution holes 12 on the back-flush distributor 11 are above the water distribution pipes 16, and the top view structure thereof is as shown in fig. 3. In a specific application, the water distribution pipes 16 are uniformly distributed in the areas above the filter material layer 5 and below the horizontal filter plates 2, and the purpose is to ensure that the ranges and pressures of water inlet distribution and back flush distribution are more balanced.

In order to prevent back-flushing water from flowing back into the high-pressure pulse gas supply pipe 13, in a preferred embodiment, the high-pressure pulse gas supply pipe 13 is provided with a check valve.

During the back flushing operation, the back flushing water and the high-pressure pulse gas are mixed to act on the filter material layer 5, the impact force may cause the filter material layer 5 to be offset and stacked towards one side, and the filtering effect is affected, in a preferred embodiment, referring to fig. 1 and fig. 2, a plurality of filter material partition plates 19 are arranged in the filtering chamber 3, the filter material partition plates 19 are vertically connected to the horizontal filtering plate 2, and the filter material partition plates 19 partition a plurality of independent filter material partition spaces, so that the filter material layer 5 can be effectively prevented from being offset and stacked on one side of the filtering chamber 3 due to the impact force.

In order to facilitate inspection, maintenance and replacement of the filter material, in a preferred embodiment, a manhole 20 is provided on the tank 1, and in particular, the manhole 20 is provided at a position on the side wall of the tank 1 above the filter material layer 5.

Most of the existing quartz sand filters are of round tank body structures, when a large amount of water is needed, multiple sets of filters are needed, the occupied space of the traditional round tank body filters is large when multiple sets of filters are combined, the pipeline connection is very complex, in a preferred embodiment, the box body 1 is a cuboid, and the filtering device is formed by combining multiple box bodies 1 in parallel, so that the occupied space is reduced and the filtering device is easier to combine and set compared with a common round tank-shaped filtering tank. Each box 1 all independently is equipped with filtration and back flush return circuit, can control according to the water demand size during the in-service use, can a box 1 work alone, also can a plurality of boxes 1 simultaneous workings.

To sum up, this utility model relates to a back flush filter equipment can effectively solve the problem that current filter equipment air water mixes inadequately, high pressure draught scope of action is little, to the difficult evenly distributed of filter material scouring force, has very high value of utilization and use meaning, can popularize and apply in a large number.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides a back flush filter equipment, includes box (1), its characterized in that: a horizontal filter plate (2) is arranged in the box body (1), the box body (1) is divided into an upper filter chamber (3) and a lower clear water chamber (4) by the horizontal filter plate (2), and a filter material layer (5) is arranged above the horizontal filter plate (2); a water inlet (6), a water outlet (7), a backwashing water inlet (8) and a backwashing water outlet (9) are formed in the box body (1), a water inlet distributor (10) is arranged above the filter material layer (5), the water inlet distributor (10) is connected with the water inlet (6), a backwashing water distributor (11) is arranged below the horizontal filter plate (2), the backwashing water distributor (11) is connected with the backwashing water inlet (8), a plurality of water distribution holes (12) are formed in the water inlet distributor (10) and the backwashing water distributor (11), and a high-pressure pulse air supply pipe (13) is connected to a water inlet pipe of the backwashing water inlet (8); the water outlet (7) is communicated with the clear water chamber (4), the back flush water outlet (9) is communicated with the filtering chamber (3), and an air emptying valve (14) is arranged above the box body (1).

2. The backwash filter device as defined in claim 1, wherein: electromagnetic control valves (15) are arranged at the water inlet (6), the water outlet (7), the backwashing water inlet (8) and the backwashing water outlet (9).

3. The backwash filter device as defined in claim 1, wherein: the water inlet distributor (10) and the back flush distributor (11) both comprise water distribution pipes (16) forming one or more closed loops, and the water distribution holes (12) are distributed on the water distribution pipes (16).

4. The backwash filter device as defined in claim 1, wherein: and a check valve (17) is arranged on the high-pressure pulse gas supply pipe (13).

5. The backwash filter device as defined in claim 1, wherein: the horizontal filter plate (2) is provided with a plurality of filter caps (18).

6. The backwash filter device as defined in claim 1, wherein: a plurality of filter material partition plates (19) are arranged in the filter chamber (3), and the filter material partition plates (19) are vertically connected to the horizontal filter plate (2).

7. The backwash filter device as defined in claim 1, wherein: a manhole (20) is arranged on the box body (1).

8. The backwash filter device as defined in claim 1, wherein: the box body (1) is a cuboid.

9. The backwash filter device as defined in claim 8, wherein: the box body is formed by combining a plurality of box bodies (1) in parallel.

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