Air-water efficient backwashing filtering system

Abstract

The utility model discloses an efficient air-water backwashing filter system which comprises a filter tank body, a water washing system and an air washing system, the interior of the filtering tank body is divided into a first space and a second space from top to bottom, and a filtering material for filtering water flow to be treated is arranged in the second space; inputting clean water flow and / or water flow to be treated into the first space by arranging a first pipeline group connected into the first space, and forming rotatable water flow in the first space; clean water flow is input into the second space through a second pipeline set connected into the second space; one end of the gas conveying pipeline is connected with an external gas supply device, and the other end of the gas conveying pipeline is connected with a second pipeline group or extends into the second space, so that backwashing gas is output to the second space, backwashing procedures of gas washing and water washing are combined, and the interior of the filtering tank body is automatically washed at various angles, so that dirt is more easily removed from a filtering material; the water consumption in the backwashing process can be effectively saved, and the cleaning efficiency of the filtering system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of water treatment, and in particular to an air-water high-efficiency backwashing filtration system. Background Art

[0002] In the prior art, a filtering device is often used to filter water bodies. When the current filtering device is used, it is usually to filter out impurities and particulate matter in the water through a filter tank to purify the water quality. However, during filtration, impurities in the water will continue to accumulate on the filter material to form a hardened layer, which will reduce the filtering capacity of the filter material. Therefore, the filter material of the filter tank needs to be cleaned frequently to maintain the normal operation of the equipment and extend the service life of the filter material. Among them, backwashing with water is usually adopted. However, since the hardened layer formed by impurities is relatively hard, a large amount of water resources are often consumed for flushing. For the filter material and some dead corners in the filter tank, flushing is difficult and often requires manual flushing, which consumes high labor costs. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the present application provides an air-water high-efficiency backwash filtration system to solve at least one of the above-mentioned technical problems.

[0004] An air-water high-efficiency backwashing filtration system comprises a filtration tank, a water washing system and an air washing system; the filtration tank is divided into a first space and a second space from top to bottom, and a filtration material for filtering a water flow to be treated is arranged in the second space.

[0005] The water washing system includes a first pipe group with one end connected to the external water storage area and the other end extending into the first space, and a second pipe group with one end connected to the external water storage area and the other end extending into the second space. The first pipe group is used to input clean water and / or water to be treated into the first space and form a rotatable water flow in the first space, and the second pipe group is used to input clean water into the second space or collect treated water from the second space.

[0006] The gas washing system includes a gas pipeline, one end of which is connected to an external gas providing device, and the other end is connected to a second pipeline group or extends into a second space. A gas valve is provided on the gas pipeline, and the gas valve is used to switch the backwashing gas flowing into the second space.

[0007] In a specific embodiment, the first pipeline group includes a first pipeline and a second pipeline. The first pipeline extends from the external water storage area to the first space, a first water valve is arranged on the first pipeline, and the water outlet direction of the first pipeline forms an angle with the inner wall of the filter tank to form a rotatable water flow in the first space.

[0008] The first water valve is used to switch the clean water flow or the water flow to be treated flowing into the first space. The second pipe extends from the external water storage area to the first space, and the second pipe is provided with a second water valve, which is used to switch the clean water flow or the water flow to be treated flowing into the first space.

[0009] In a specific embodiment, the second pipeline group includes a third pipeline having one end connected to the external water storage area, and the other end of the third pipeline extends from the filter tank to the second space, and a third water valve is arranged on the third pipeline, and the third water valve is used to switch the water flow into the second space.

[0010] In a specific embodiment, the filter material is suspended in the second space, and one end of the second pipe group extends into the lower space of the filter material in the second space.

[0011] In a specific embodiment, one end of the second pipe group extends into or below the filter material in the second space, a water collector is provided in the filter material, and the second pipe group is connected to the water collector. When the filter material fills the second space, one end of the second pipe group extends into the filter material in the second space.

[0012] In a specific embodiment, a pressure protection device is provided on the tank body, and the pressure protection device is connected to an external gas supply device, and is used to close the gas valve and the external gas supply device when the pressure in the filter tank body reaches a preset value. In a specific embodiment, a first control valve connected in series with the gas valve is provided on the gas pipeline, and is used to control the flow rate of the backwash gas in the gas pipeline.

[0013] In a specific embodiment, it also includes a first drain pipe and a first water outlet valve disposed thereon, a second drain pipe and a second water outlet valve disposed thereon; the filter material is used to filter the water flow to be treated and generate treated water flow in the second space. One end of the first drain pipe and the second drain pipe extends into the second space; the first water outlet valve is used to switch the backwash water flow discharged from the first space to the external space; the second water outlet valve is used to switch the treated water flow discharged from the second space to the external space or the external water storage area. In practical applications, the second pipeline group can be connected to the second drain pipe, and the second pipeline group can collect the treated water flow in the second space and then transport it to the second drain pipe, and the treated water flow discharged from the second drain pipe to the external space or the external water storage area

[0014] In a specific embodiment, a standpipe is further included, one end of which is opened in the first space and the other end is connected to the external space. The standpipe can be used to discharge the water in the filter tank body that exceeds the opening position to control the water level in the filter tank body. In actual applications, the user can set the opening height of the standpipe in the filter tank body according to actual needs.

[0015] In a specific embodiment, it also includes a control module connected to the air washing system and the water washing system respectively, and the control module is used to make the air washing system and the water washing system operate sequentially within a working cycle to perform air washing and water washing on the filter material in sequence.

[0016] In actual use, the water valve, gas valve, and water outlet valve involved may be an electric valve or a pneumatic valve, which may be connected to a control module and uniformly controlled by the control module.

[0017] It should be noted that in the water washing step, as long as the filter material can be washed, the water entering through the first pipe and the second pipe can be a clean water flow or a to-be-treated water flow with less impurities than the other to-be-treated water flows. The backwash water flow containing impurities obtained after the final washing will be discharged along the first drain pipe.

[0018] Beneficial effect: The present application provides an air-water high-efficiency backwash filtration system, which combines a water washing system with an air washing system, first uses an air washing device to loosen dirt deposits and compaction on the filter material in the filter tank, and then runs the water washing system to wash the filter material. Combined with the rotatable water flow provided in the water washing system, the difficulty of washing the filter material can be effectively reduced, making it easier to remove dirt from the filter material, saving the water supply of the water washing system when cleaning the filter material, and improving the efficiency of cleaning the filter system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a filtration system in this application;

[0021] Figure 2 Another schematic diagram of the filtration system in this application;

[0022] Figure 3 It is a partial schematic diagram of the filter tank in this application;

[0023] Figure 4 A schematic diagram of the first space and the second space in the filtration system of the present application;

[0024] Figure 5 This is a schematic diagram of the connection relationship between the modules in the filtration system of this application.

[0025] The figure numbers are as follows: 1-filter tank; 11-first pipeline; 111-first water valve; 112-second control valve; 113-water outlet; 12-second pipeline; 121-second water valve; 13-third pipeline; 131-third water valve; 14-gas pipeline; 141-gas valve; 142-first control valve; 143-external gas supply device; 15-pressure protection device; 21-filter material; 22-water collector; 23-water distributor; 31-first drain pipe; 311-first water outlet valve; 32-second drain pipe; 321-second water outlet valve; 4-vertical pipe; 41-opening; 5-control module; 51-first drive member; 52-second drive member; 6-observation window; A-first space; B-second space. DETAILED DESCRIPTION

[0026] The concept, specific structure and technical effects of the present application will be clearly and completely described below in combination with the embodiments and drawings to fully understand the purpose, features and effects of the present application.

[0027] Hereinafter, various embodiments of the present application will be described more fully. The present application may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present application to the specific embodiments disclosed herein, but the present application should be understood to cover all adjustments, equivalents and / or alternatives within the spirit and scope of the various embodiments of the present application.

[0028] Hereinafter, the term "include" or "may include" used in various embodiments of the present application indicates the presence of a disclosed function, operation, or element, and does not limit the addition of one or more functions, operations, or elements. In addition, as used in various embodiments of the present application, the terms "include", "have", and their cognates are intended only to indicate a specific feature, number, step, operation, element, component, or combination of the foregoing, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components, or a combination of the foregoing or the possibility of adding one or more features, numbers, steps, operations, elements, components, or a combination of the foregoing.

[0029] In various embodiments of the present application, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0030] The expressions (such as "first", "second", etc.) used in the various embodiments of the present application may modify the various constituent elements in the various embodiments, but may not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the present application, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0031] It should be noted that in this application, unless otherwise clearly specified and defined, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In the present application, a person of ordinary skill in the art should understand that the terms indicating orientation or positional relationship herein are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] The terms used in the various embodiments of the application are only used to describe the purpose of specific embodiments and are not intended to limit the various embodiments of the application. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise limited, all terms used here (including technical terms and scientific terms) have the same meaning as the meanings commonly understood by ordinary technicians in the field of the various embodiments of the application. The terms (such as the terms defined in the dictionary generally used) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly defined in the various embodiments of the application.

[0034] Example

[0035] This embodiment provides an air-water high-efficiency backwashing filtration system, which can effectively improve the cleaning efficiency of the filter material in the filter tank and save backwashing water by combining the backwashing methods of air washing and water washing. The specific scheme is as follows:

[0036] An air-water high-efficiency backwashing filtration system comprises a filter tank 1, a water washing system and an air washing system; the filter tank 1 is divided into a first space and a second space from top to bottom, and a filter material 21 for filtering the water to be treated is arranged in the second space. In a specific embodiment, the first space is as follows Figure 4 The area A in the middle mainly refers to the area above the filter material 21 in the filter tank 1; the second space is as shown in FIG. Figure 4 The area B in the middle mainly refers to the filter material 21 and the area below the filter material 21 in the filter tank 1. In actual use, the filter material 21 can fill the second space or not fill the second space as needed, that is, the filter material 21 is suspended and some space is left below the filter material 21.

[0037] The water washing system includes a first pipe group with one end connected to the external water storage area and the other end extending into the first space, and a second pipe group with one end connected to the external water storage area and the other end extending into the second space. The first pipe group is used to input clean water and / or water to be treated into the first space and form a rotatable water flow in the first space; the second pipe group is used to input clean water into the second space or collect treated water from the second space.

[0038] The gas washing system includes a gas pipeline 14, one end of which is connected to an external gas providing device 143, and the other end is connected to the second pipeline group or extends into the second space. A gas valve 141 is provided on the gas pipeline 14, and the gas valve 141 is used to switch the backwashing gas flowing into the second space.

[0039] In a specific embodiment, the first pipeline group includes a first pipeline 11 and a second pipeline 12. The first pipeline 11 extends from the external water storage area to the first space, and a first water valve 111 is arranged on the first pipeline 11. The water outlet direction of the first pipeline 11 has an angle with the inner wall of the filter tank body 1 to form a rotatable water flow in the first space.

[0040] The first water valve 111 is used to switch the clean water flow or the water flow to be treated flowing into the first space. The second pipe 12 extends from the external water storage area to the first space, and the second pipe 12 is provided with a second water valve 121, which is used to switch the clean water flow or the water flow to be treated flowing into the first space.

[0041] In a specific embodiment, the second pipeline group includes a third pipeline 13 having one end connected to the external water storage area. The other end of the third pipeline 13 extends from the filter tank 1 to the second space, and a third water valve 131 is provided on the third pipeline 13, which is used to switch the water flow into the second space.

[0042] In a specific embodiment, the filter material 21 is suspended in the second space, and one end of the second pipe group extends to the lower space of the filter material 21 in the second space. In practical applications, the filter material 21 can be suspended in the filter tank 1 through a suspended filter bed or a filter cap.

[0043] In a specific embodiment, one end of the second pipe group extends into or below the filter material 21 of the second space, a water collector 22 is provided in the second space, and the second pipe group is connected to the water collector. In practical applications, the water collector 22 can be an octopus type / transverse tube type water collector, such as Figure 3 When the filter material 21 fills up the second space, a section of the second pipe group extends into the filter material in the second space.

[0044] In a specific embodiment, a pressure protection device 15 is provided on the tank body, and the pressure protection device 15 is connected to an external gas providing device 143, and is used to close the gas valve 141 and the external gas providing device 143 when the pressure in the filter tank body 1 reaches a preset value, wherein the pressure protection device 15 can be connected to the external gas providing device 143 in communication to obtain a switch instruction, or can be connected to the control device 5 in communication. In practical applications, the gas providing device is a high-pressure air pump, specifically a fan, and a pressure relief valve is provided on the gas providing device for automatic pressure relief.

[0045] In a specific embodiment, the gas pipeline 14 is provided with a first control valve 142 connected in series with the gas valve 141, which is used to control the flow rate of the backwash gas in the gas pipeline 14. The first pipeline 11 is provided with a second control valve 112 connected in series with the first water valve 111, which is used to control the flow rate of the water flow in the first pipeline 11. In practical applications, the first control valve 142 and the second control valve 112 can be a manual valve or an electrically controlled valve.

[0046] In a specific embodiment, it also includes a first drain pipe 31 and a first water outlet valve 311 disposed thereon, a second drain pipe 32 and a second water outlet valve 321 disposed thereon; the filter material 21 is used to filter the water flow to be treated and generate the treated water flow in the second space. One end of the first drain pipe 31 extends into the second space. In a specific embodiment, one end of the first drain pipe 31 can be connected to the first pipe 11 in the filter material, and is used to collect and discharge the backwash water flow collected by the first pipe 11 in the first space during the backwashing stage.

[0047] One end of the first drain pipe 31 and the second drain pipe 32 are connected to the second space; the first outlet valve 311 is used to switch the backwash water flow discharged from the first space to the external space; the second outlet valve 321 is used to switch the treated water flow discharged from the second space to the external space or the external water storage area. In practical applications, the first drain pipe 31 and the second drain pipe 32 can be connected to the side of the filter tank body 1 corresponding to the second space at one end, or connected to the bottom of the filter tank body 1 at one end. The second pipeline group can be connected to the second drain pipe 32, and the second pipeline group can collect the treated water flow in the second space and then transport it to the second drain pipe 32.

[0048] In a specific embodiment, a standpipe 4 is further included, one end of which extends into the first space, one end of which is open in the first space, and the other end is connected to the external space. In practical applications, the user can set the opening height of the standpipe 4 in the filter tank body 1 according to actual needs to flexibly control the water level in the filter tank body 1. In a specific embodiment, an observation window 6 is further provided on one side of the filter tank body 1 in an area corresponding to the first space inside the filter tank body 1, and a staff member can observe whether a rotating water flow is formed in the first space and the water level in the filter tank body 1 through the observation window 6.

[0049] In actual use, the water valve, gas valve 141, and water outlet valve involved may be an electric valve or a pneumatic valve, which may be connected to the control module 5 and uniformly controlled by the control module 5. The connection relationship between the control module 5 and each component module is as follows: Figure 5 shown.

[0050] In one application, when the water sources of the first pipeline 11, the second pipeline 12 and the third pipeline 13 are the same area of ​​the external water storage area, such as Figure 1 As shown, a first driving member 51 can also be set between the external water storage area and the aforementioned three pipelines to drive the flow of water in the three pipelines and adjust the water flow rate. In practical applications, the first driving member 51 can be a water pump, and multiple water pumps or variable frequency pumps can be set according to the actual water demand. In another case where the water source of the first pipeline 11, the second pipeline 12, and the third pipeline 13 is not the same area as the external water storage area, such as Figure 2As shown, in this case, a first driving member 51 can be set between the first water source area and the first pipeline 11, and a second driving member 52 can be set between the second water source area and the second pipeline 12 and the third pipeline 13 to drive different water sources to transport water to the pipelines. It can be achieved that the first pipeline 11 and the second pipeline 12 and the third pipeline 13 have different water flow speeds, and the sources of water in the three pipelines can also be different. For example, the first pipeline 11 can take water from the first water source area and transport the water to be treated, and the second pipeline 12 and the third pipeline 13 can take water from the second water source area and transport clean water. This can be set according to actual conditions.

[0051] In a specific embodiment, it also includes a control module 5 connected to the air washing system and the water washing system respectively, and the control module 5 is used to make the air washing system and the water washing system run sequentially within a working cycle.

[0052] In a specific backwashing process, the user runs the air washing system and the water washing system in sequence through the control module 5 to complete the backwashing of the filter system. First, air washing is performed, and the first water valve 111, the second water valve 121, the third water valve 131 and the second water outlet valve 321 are closed. The first driving member 51 and / or the second driving member 52 that supply water to the first pipeline group and the second pipeline group are also closed, so that the external water storage area does not output water flow to the filter tank body 1 at this time. Open the air valve 141 and the first water outlet valve 311. After completing the above steps, the gas providing device is turned on, and the backwashing gas used for aeration is directly input into the second space of the filter tank body 1 through the third pipeline 13 in the second pipeline group or through the gas pipeline 14 through the gas pipeline 14 through the gas pipeline 14. After running for a preset time period, the backwashing gas in the filter tank body 1 forms a large impact force on the dirt deposition and the hardened layer of the filter material 21, and each filter layer in the filter material 21 is loosened.

[0053] After the air washing is completed and the inside of the filter material 21 is loosened, the water washing step is performed. At this time, the air valve 141 and the gas supply device are closed, the first water valve 111, the third water valve 131 and the first water outlet valve 311 are opened, the second water valve 121 and the second water outlet valve 321 are closed, and the first driving member 51 and / or the second driving member 52 for supplying water to the first pipeline group and the second pipeline group are opened, so that the external water storage area outputs water flow to the filter tank body 1. At this time, the water flow input from the outside flows into the first space through the first pipeline 11. Since there is an angle between the water outlet 113 of the first pipeline 11 and the inner wall of the filter tank body 1, the water flow output by the first pipeline 11 can rotate in the first space to form a side vortex, which can play a better cleaning role for the inner wall of the filter tank body 1, and can drive the impurities in the sediment layer above the filter material 21 to rotate in the first space. The third pipe 13 also outputs backwash water flow to the filter material 21. Since the filter material 21 has been loosened by the pressure shock of the gas in the air washing step, the water flow output by the third pipe 13 can backwash the filter material 21 faster in the water washing step, and wash out the deposited dirt faster. In one embodiment, the port of the second pipe located in the first space is provided with a water distributor 23. During the backwashing process, the water flow washes from bottom to top, and the resulting sewage can be collected by the water distributor 23 and finally discharged from the first drain pipe 31. Due to the increase of the air washing step, the water consumption in the water washing step can be further reduced through the backwashing operation combined with air washing and water washing, which greatly improves the flushing efficiency of the filtration system and saves resources efficiently.

[0054] It should be noted that, in the water washing step, the water flow entering through the first pipe 11 and the third pipe 13 can be a clean water flow, or a to-be-treated water flow with less impurities than other to-be-treated water flows.

[0055] The filtering performance of the filter material 21 is improved after air washing and water washing. In a filtering process, the first water valve 111 and the second water valve 121 are opened, and the first pipe 11 and the second pipe 12 are driven by the first driving member 51 and / or the second driving member 52 to first transport the water flow to be treated to the first space. The water flow to be treated is treated by the filter material 21 to obtain a clean treated water flow. The treated water flow is collected by the water collector 22 in the second space and further output from the second drain pipe 32. In actual applications, the second drain pipe 32 can be connected to an external water storage area, so that a self-circulation is formed between the filtration system and the external water storage area.

[0056] The present embodiment provides an air-water high-efficiency backwashing filtration system, which combines a water washing system with an air washing system. The air washing device is first used to loosen dirt deposits and compaction on the filter material in the filter tank, and then the water washing system is operated to wash the filter material. Combined with the rotatable water flow provided in the water washing system, the difficulty of washing the filter material can be effectively reduced, and washing at various angles can be automatically performed, making it easier to remove dirt from the filter material. The water supply of the water washing system when cleaning the filter material can be saved, the efficiency of cleaning the filter system is improved, and the cost of manual cleaning is reduced.

[0057] The above is a specific description of the preferred implementation of the present application, but the invention of the present application is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. An air-water high-efficiency backwash filtration system, characterized in that: It includes a filter tank, a water washing system and an air washing system; the filter tank is divided into a first space and a second space from top to bottom, and the second space is provided with a filter material for filtering the water flow to be treated; The water washing system comprises a first pipe group having one end connected to an external water storage area and the other end extending into the first space, and a second pipe group having one end connected to an external water storage area and the other end extending into the second space; the first pipe group is used to input clean water flow and / or water flow to be treated into the first space and form a rotatable water flow in the first space; the second pipe group is used to input clean water flow into the second space or collect treated water flow from the second space; The gas washing system includes a gas pipeline, one end of which is connected to an external gas providing device, and the other end is connected to the second pipeline group or extends into the second space. A gas valve is provided on the gas pipeline, and the gas valve is used to switch the backwashing gas flowing into the second space.

2. The air-water high-efficiency backwash filtration system according to claim 1 is characterized in that: The first pipeline group includes a first pipeline and a second pipeline; The first pipe extends from the external water storage area to the first space, a first water valve is provided on the first pipe, and the water outlet direction of the first pipe forms an angle with the inner wall of the filter tank body to form a rotatable water flow in the first space; The first water valve is used to switch the clean water flow or the water flow to be treated flowing into the first space; The second pipe extends from the external water storage area to the first space. The second pipe is provided with a second water valve. The second water valve is used to switch the clean water flow or the water flow to be treated flowing into the first space.

3. The air-water high-efficiency backwash filtration system according to claim 2 is characterized in that: The second pipeline group includes a third pipeline with one end connected to the external water storage area; The other end of the third pipe extends from the filter tank into the second space. The third pipe is provided with a third water valve, and the third water valve is used to switch the water flow into the second space.

4. The air-water high-efficiency backwash filtration system according to claim 1 is characterized in that: The filter material is suspended in the second space, and one end of the second pipe group extends into the lower space of the filter material in the second space.

5. The air-water high-efficiency backwash filtration system according to claim 1 is characterized in that: One end of the second pipe group extends into or below the filter material in the second space. A water collector is provided in the second space, and the second pipe group is connected to the water collector.

6. The air-water high-efficiency backwash filtration system according to claim 1 is characterized in that: The tank body is provided with a pressure protection device, which is connected to an external gas supply device and is used to close the gas valve and the external gas supply device when the pressure in the filtering tank body reaches a preset value.

7. The air-water high-efficiency backwash filtration system according to claim 1 is characterized in that: The gas pipeline is provided with a first control valve connected in series with the gas valve, and is used to control the flow rate of the backwashing gas in the gas pipeline.

8. The air-water high-efficiency backwash filtration system according to claim 4 or 5, characterized in that: It also includes a first drain pipe and a first water outlet valve disposed thereon, a second drain pipe and a second water outlet valve disposed thereon; the filter material is used to filter the water flow to be treated and generate the treated water flow in the second space; One end of the first drain pipe and the second drain pipe is connected to the second space; The first water outlet valve is used to switch the backwash water flow discharged from the first space to the external space; The second water outlet valve is used to switch the treated water flow discharged from the second space to the external space or the external water storage area.

9. The air-water high-efficiency backwash filtration system according to claim 1, characterized in that: It also includes a standpipe, one end of which is opened in the first space and the other end is connected to the external space.

10. The air-water high-efficiency backwash filtration system according to claim 1, characterized in that: It also includes control modules connected to the air washing system and the water washing system respectively, and the control module is used to make the air washing system and the water washing system run sequentially within a working cycle.

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