Air-water backwashing filter tank

Abstract

The utility model relates to the technical field of water treatment, and provides an air-water backwashing filter tank, which comprises two filter tanks and a supply unit for supplying air and water, the supply unit is arranged between the two filter tanks, and the two filter tanks are symmetrically arranged by taking the supply unit as a symmetry axis; a V-shaped groove for filtering is formed in each filter tank, an air-water chamber is arranged below each V-shaped groove, and air and water provided by the supply unit enter the air-water chamber. According to the air-water backwashing filter tank disclosed by the utility model, the two filter tanks are symmetrically arranged, so that the water purification efficiency can be improved, and a washing water inlet pipe is easy to arrange, so that synchronous washing of the two filter tanks is realized, and the washing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to an air-water backwashing filter tank. Background Art

[0002] Most of the existing air-water backwash filters adopt single tanks, which have low efficiency in both sewage purification and filter flushing, and are not suitable for large-scale water purification projects. Utility Model Content

[0003] The utility model aims to provide an air-water backwash filter tank, which can at least solve some defects in the prior art.

[0004] To achieve the above-mentioned purpose, an embodiment of the utility model provides the following technical solution: an air-water backwash filter tank, comprising two filter tanks and a supply unit for providing air and water, wherein the supply unit is arranged between the two filter tanks, and the two filter tanks are symmetrically arranged with the supply unit as the symmetry axis; each of the filter tanks is provided with a V-shaped groove for filtration, and an air-water chamber is provided under each of the V-shaped grooves, and the air and water provided by the supply unit enter the air-water chamber.

[0005] Furthermore, the supply unit includes a backwash water pipe and two backwash air pipes, both ends of the backwash water pipe are respectively connected to the two air-water chambers, and the two backwash air pipes are respectively connected to the two air-water chambers, and the backwash water inlet pipe is connected to the backwash water inlet main pipe.

[0006] Furthermore, the air-water chamber is provided with an exhaust pipe, and the exhaust pipe is provided with a valve.

[0007] Furthermore, the exhaust pipe is connected to the backwashing air pipe.

[0008] Furthermore, a supporting layer is provided at the bottom of the V-shaped groove, a filter material layer is provided above the supporting layer, and the air and water in the air-water chamber enter the filter material layer through the supporting layer.

[0009] Furthermore, the air-water chamber is provided with a plurality of air distribution holes and a plurality of water distribution holes.

[0010] Furthermore, it also includes a water inlet channel unit for providing water to be filtered to the filter pool.

[0011] Furthermore, the water inlet channel unit includes a first water inlet channel, a second water inlet channel and a third water inlet channel which are connected in sequence, the first water inlet channel is higher than the second water inlet channel, the second water inlet channel is higher than the third water inlet channel, and the third water inlet channel is connected to the V-shaped groove.

[0012] Furthermore, the lower portion of the first water inlet channel is connected to the lower portion of the second water inlet channel through a water hole.

[0013] Furthermore, a baffle is provided at the connecting opening between the second water inlet channel and the third water inlet channel.

[0014] Compared with the prior art, the beneficial effects of the utility model are: an air-water backwash filter tank can improve the water purification efficiency by symmetrically arranging two filter tanks, and it is easy to arrange the flushing water inlet pipe, thereby realizing the synchronous flushing of the two filter tanks and improving the flushing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A vertical cross-sectional schematic diagram of an air-water backwash filter tank from a first viewing angle provided by an embodiment of the utility model;

[0016] Figure 2 A vertical cross-sectional schematic diagram of an air-water backwash filter tank from a second viewing angle provided by an embodiment of the utility model;

[0017] In the accompanying drawings: 1-filter tank; 2-supply unit; 3-V-shaped groove; 4-backwash water pipe; 5-backwash air pipe; 6-air-water chamber; 7-backwash water inlet main pipe; 8-exhaust pipe; 9-supporting layer; 10-filter material layer; 11-air distribution hole; 12-water distribution hole; 13-first water inlet channel; 14-second water inlet channel; 15-third water inlet channel; 16-water hole; 17-baffle; 18-drain pipe; 19-drain pipe; 20-manhole. DETAILED DESCRIPTION

[0018] 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 of 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.

[0019] See also Figure 1 and Figure 2, an embodiment of the utility model provides an air-water backwash filter tank, comprising two filter tanks 1 and a supply unit 2 for providing air and water, wherein the supply unit 2 is arranged between the two filter tanks 1, and the two filter tanks 1 are symmetrically arranged with the supply unit 2 as the axis of symmetry; each of the filter tanks 1 is provided with a V-shaped groove 3 for filtering, and an air-water chamber 6 is provided below each of the V-shaped grooves 3, and the air and water provided by the supply unit 2 enter the air-water chamber 6. In this embodiment, by symmetrically arranging the two filter tanks 1, the water purification efficiency can be improved, and it is easy to arrange the flushing water inlet pipe, so as to achieve synchronous flushing of the two filter tanks 1 and improve the flushing efficiency. Specifically, when the filtering effect of the V-shaped groove 3 is not good, the two air-water chambers 6 are provided with air and water by the supply unit 2 at the same time, so that the two V-shaped grooves 3 can be filtered at the same time, thereby improving the flushing efficiency. Preferably, a manhole 20 is provided at the bottom of the V-shaped groove 3 for easy maintenance.

[0020] As an optimization solution of the embodiment of the utility model, please refer to Figure 1 and Figure 2 , the supply unit 2 includes a backwash water pipe 4 and two backwash air pipes 5, the two ends of the backwash water pipe 4 are respectively connected to the two air-water chambers 6, and the two backwash air pipes 5 are respectively connected to the two air-water chambers 6, and the backwash water inlet pipe is connected to a backwash water inlet main pipe 7. In this embodiment, the supply unit 2 is refined, which is composed of a backwash water pipe 4, a backwash water inlet main pipe 7 and two backwash air pipes 5, wherein the backwash water inlet main pipe 7 provides flushing water and enters the backwash water pipe 4. Preferably, the backwash water inlet main pipe 7 is connected to the central part of the backwash water pipe 4, so that the backwash water can be discharged from both ends of the backwash water pipe 4 at the same time to enter the two air-water chambers 6, provide flushing water for the air-water chambers 6, and then provide an air source through the two backwash air pipes 5, so that the V-shaped groove 3 can be flushed with air and water. Preferably, the air-water chamber 6 is provided with an exhaust pipe 8, which can be used for exhaust. When exhaust is not required, the valve is closed, and when exhaust is required, the valve is opened.

[0021] To further optimize the above solution, please refer to Figure 1 and Figure 2 , the exhaust pipe 8 is connected to the backwashing air pipe 5. In this embodiment, the exhaust pipe 8 is connected to the backwashing air pipe 5, so that the backwashing air pipe 5 is closed, and the gas can be directly discharged after the exhaust pipe 8 is opened. Such a design can make the structure simpler and one less opening is designed.

[0022] As an optimization solution of the embodiment of the utility model, a supporting layer 9 is provided at the bottom of the V-shaped groove 3 , and a filter material layer 10 is provided above the supporting layer 9 , and the air and water in the air-water chamber 6 enter the filter material layer 10 from the supporting layer 9 .

[0023] As an optimization solution of the embodiment of the utility model, please refer to Figure 1 and Figure 2 , the air-water chamber 6 is provided with a plurality of air distribution holes 11 and a plurality of water distribution holes 12. In this embodiment, the air distribution holes 11 of the air-water chamber 6 are used for exhausting air, and the water distribution holes 12 are used for draining water, thus forming air and water at multiple positions.

[0024] As an optimization solution of the embodiment of the utility model, please refer to Figure 1 and Figure 2 , and further includes an inlet channel unit for providing a water source to be filtered to the filter pool 1. In this embodiment, the water source to be filtered is provided to the filter pool 1 through the inlet channel unit, and the filtrate is discharged from the drain pipe 18 after being filtered by the V-shaped groove 3 of the filter pool 1.

[0025] To further optimize the above solution, please refer to Figure 1 and Figure 2 The water inlet channel unit includes a first water inlet channel 13, a second water inlet channel 14 and a third water inlet channel 15 which are connected in sequence, the first water inlet channel 13 is higher than the second water inlet channel 14, the second water inlet channel 14 is higher than the third water inlet channel 15, and the third water inlet channel 15 is connected to the V-shaped groove 3. In this embodiment, three water inlet channels connected in sequence are designed to perform preliminary sedimentation filtration on the water source to be filtered, improve the filtration efficiency of the V-shaped groove 3, and reduce the backwashing frequency of the V-shaped groove 3. Preferably, the first water inlet channel 13 and the second water inlet channel 14 are both provided with an emptying pipe 19.

[0026] To further optimize the above solution, please refer to Figure 1 and Figure 2 The lower part of the first water inlet channel 13 is connected to the lower part of the second water inlet channel 14 through the water hole 16. In this embodiment, the water in the first water inlet channel 13 can enter the second water inlet channel 14 through the water hole 16 at the lower part.

[0027] To further optimize the above solution, please refer to Figure 1 and Figure 2 , a baffle 17 is provided at the connecting port between the second water inlet channel 14 and the third water inlet channel 15. In this embodiment, the baffle 17 is designed to control the flow rate of the supernatant from the second water inlet channel 14 entering the third water inlet channel 15, and the filtering rhythm of the V-shaped groove 3 can be controlled. Preferably, the baffle 17 is designed as a retractable structure, such as designing a slide rail on the groove wall of the second water inlet channel 14, and the baffle 17 is slidably arranged on the slide rail, and the extension direction of the slide rail is the vertical direction, so that the length of the baffle 17 extending from the slide rail can be controlled as needed, thereby controlling the flow rate.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air-water backwash filter tank, characterized in that: It includes two filter pools and a supply unit for providing air and water, wherein the supply unit is arranged between the two filter pools, and the two filter pools are symmetrically arranged with the supply unit as the symmetry axis; each filter pool is provided with a V-shaped groove for filtration, and an air-water chamber is provided under each V-shaped groove, and the air and water provided by the supply unit enter the air-water chamber.

2. The air-water backwash filter tank according to claim 1, characterized in that: The supply unit comprises a backwash water pipe and two backwash air pipes, both ends of the backwash water pipe are respectively connected to the two air-water chambers, and the two backwash air pipes are respectively connected to the two air-water chambers, and the backwash water pipe is connected to a backwash water inlet main pipe.

3. The air-water backwash filter tank according to claim 2, characterized in that: The air-water chamber is provided with an exhaust pipe, and the exhaust pipe is provided with a valve.

4. The air-water backwash filter tank according to claim 3, characterized in that: The exhaust pipe is communicated with the backwashing air pipe.

5. The air-water backwash filter tank according to claim 1, characterized in that: A supporting layer is provided at the bottom of the V-shaped groove, a filter material layer is provided above the supporting layer, and the air and water in the air-water chamber enter the filter material layer through the supporting layer.

6. The air-water backwash filter tank according to claim 1, characterized in that: A plurality of air distribution holes and a plurality of water distribution holes are arranged in the air-water chamber.

7. The air-water backwash filter tank according to claim 1, characterized in that: Also included is a water inlet channel unit for providing a water source to be filtered to the filtering pool.

8. The air-water backwash filter tank according to claim 7, characterized in that: The water inlet channel unit includes a first water inlet channel, a second water inlet channel and a third water inlet channel which are connected in sequence, the first water inlet channel is higher than the second water inlet channel, the second water inlet channel is higher than the third water inlet channel, and the third water inlet channel is connected to the V-shaped groove.

9. An air-water backwash filter tank as claimed in claim 8, characterized in that: The lower part of the first water inlet channel is connected with the lower part of the second water inlet channel through a water hole.

10. The air-water backwash filter tank according to claim 8, characterized in that: A baffle is provided at the connecting opening between the second water inlet channel and the third water inlet channel.

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