Backwash filtering air valve group

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a backwash filtering air valve group, which aims to solve the problem that filters at nodes of air valves are difficult to clean, and comprises a central filter and a plurality of air valves, a main flow channel and a plurality of branch flow channels communicated with the side face of the main flow channel are arranged in the shell, a service valve used for being connected with the gas collecting neck is installed at the lower end of the main flow channel, and the ends, away from the main flow channel, of the branch flow channels are communicated with the air valves in a one-to-one correspondence mode. The filtering part is mounted in the main flow channel and used for filtering fluid; the upper end of the main runner and / or the side surface of the upper end of the air valve are / is connected with a backwashing pipe, a first switch valve is arranged on the backwashing pipe, and the water inlet end of the backwashing pipe is communicated with a water pipeline to introduce backwashing water; the lower end side face of the shell and / or the upper end side face of the service valve are / is connected with a pollution discharge structure. The utility model has the characteristics that the central filter and / or the air valve can be backwashed and cleaned, and the operation is convenient and fast.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and more specifically relates to a backwashing filter air valve group. Background Art

[0002] An air valve is a valve device commonly used in water pipelines. The air valve can exhaust a large amount of air when the pipeline is filled with water, and can inhale a large amount of air when negative pressure appears in the pipeline. It plays a role of exhausting a small amount of air when the pipeline is working normally.

[0003] At present, since there may be impurities such as leaves, silt, plastic or possible construction debris in the water in the water pipeline, the impurities are easy to block the air valve during the water filling process, causing the air valve to leak or even fail. In the related technology, a filter is usually installed at the air valve node of the water pipeline, and the water flowing to the air valve is filtered by the filter component in the filter to prevent impurities from entering the air valve.

[0004] However, after the filter has been used for a long time, the filter element in the filter is easily clogged by impurities, which blocks the ventilation and water flow of the air valve, affecting the normal use of the air valve; and the cleaning and maintenance process of the filter is often cumbersome and difficult to clean, which urgently needs to be improved. Utility Model Content

[0005] In order to improve the problem that it is difficult to clean the filter at the air valve node, the utility model provides a backwash filter air valve group.

[0006] The utility model provides a backwash filter air valve group, which adopts the following technical solutions:

[0007] A backwash filter air valve group, comprising a central filter and a plurality of air valves, wherein: the central filter comprises a shell and a filter component, the shell is provided with a main channel and a plurality of branch channels distributed in the circumference of the main channel and connected to the main channel, the lower end of the main channel is through, the lower end of the main channel is equipped with a maintenance valve for connecting to the air collecting neck of a water supply pipeline, the ends of the plurality of branch channels away from the main channel are connected to a plurality of air valves one by one, the filter component is installed in the main channel to filter the fluid flowing from the main channel into the branch channels; the upper end of the main channel and / or the upper end side of the air valve are connected to a backwash pipe, the water inlet end of the backwash pipe is used to connect to the water supply pipeline to introduce backwash water, and the backwash pipe is provided with a first switch valve for switching the backwash pipe; the lower end side of the shell and / or the upper end side of the maintenance valve are connected to a sewage discharge structure for sewage discharge.

[0008] By adopting the above technical scheme, under the normal operation of the air valve group, the inspection valve is in an open state, and the first switch valve and the sewage discharge structure are in a closed state, so that the air valve group can perform suction and exhaust functions in the pipe network. When it is necessary to clean the impurities at the air valve node, the inspection personnel first close the inspection valve, and then open the first switch valve and the sewage discharge structure; when only the backwash pipe is connected to the upper end of the main channel, the backwash pipe can guide the water in the water pipeline to backwash the filter component, and the sewage formed after flushing is discharged through the sewage discharge structure, so as to achieve fast and convenient cleaning of the filter. When only the backwash pipe is connected to the air valve, the water flowing out of the backwash pipe first flushes the air valve, and the water flushing the air valve then flushes the filter component, so as to achieve the flushing of the air valve and the filter in sequence, so as to achieve the purpose of cleaning the air valve and the central filter. When the backwash pipe is connected to the upper end of the main channel and the air valve, multiple backwash pipes synchronously guide the water flow to perform synchronous flushing of the air valve and the filter.

[0009] As a further preferred embodiment, it also includes a multi-way connector and a second switch valve, wherein the water inlet port of the second switch valve is used to communicate with the inner cavity of the gas collecting neck, and the water outlet port of the second switch valve is connected to the water inlet end of the backwash pipe through the multi-way connector.

[0010] By adopting the above technical solution, when multiple backwash pipes are provided, the multi-way joint provided can gather the water inlet ends of the multiple backwash pipes at one place, thereby helping to reduce the number of openings on the side of the gas collecting neck; and the second switch valve can be used as a master control switch, allowing inspection personnel to perform synchronous switching adjustments of the water inlet ports of multiple backwash pipes.

[0011] As a further preference, the housing further comprises a pressure monitoring device connected to the top of the housing for monitoring the water pressure in the main flow channel.

[0012] By adopting the above technical solution, the set pressure monitoring device can dynamically monitor the water pressure in the central filter, making it convenient for inspection personnel to control the blockage condition of the central filter.

[0013] As further preferred, the filter component includes a filter cartridge, and a filter surface of the filter cartridge covers the communication port between the main flow channel and the branch flow channel.

[0014] By adopting the above technical solution, the filter cartridge can filter the water flowing between the main channel and the branch channel, thereby intercepting impurities and ensuring that the water flowing into the air valve in the central filter has a good degree of cleanliness.

[0015] As a further preference, one end of the filter cartridge adjacent to the inspection valve is connected with a heterocyclic ring along the circumference of the inner wall of the filter cartridge.

[0016] By adopting the above technical solution, the impurities intercepted by the filter surface of the filter cartridge will be partially deposited on the upper end surface of the impurity accumulation ring, so that subsequent inspection personnel can centrally clean the impurities in the filter cartridge when cleaning the central filter.

[0017] As further preferred, the filter cartridge is connected with a perforated filter plate along the circumference of its inner wall, and the perforated filter plate divides the inner cavity of the filter cartridge into two chambers.

[0018] By adopting the above technical solution, on the one hand, when water flows through the inner cavity of the filter cartridge, the set perforated filter plate serves as a filter plate to filter the water; on the other hand, the set perforated filter plate can strengthen the cartridge structure and ensure the reliable and long-term use of the filter cartridge.

[0019] As a further preference, one end of the filter cartridge away from the inspection valve is connected to a reinforcement plate with holes along the circumference of the inner wall of the filter cartridge, and a lifting ear is connected to the reinforcement plate.

[0020] By adopting the above technical solution, the provided reinforcement plate can reinforce the filter cartridge and improve the structural strength of the filter cartridge. The provided lifting ring provides a fulcrum for the filter cartridge to be taken, making it easier for inspection personnel to install and take the filter components.

[0021] As further preferred, the filter cartridge is detachably connected to the shell, an inspection port communicating with the main flow channel is provided at the upper end of the shell, and a detachable inspection cover is also installed at the outer end of the inspection port.

[0022] By adopting the above technical solution, when the inspection personnel need to clean the filter component, the inspection personnel can open the inspection cover, then remove the filter cartridge in the shell, and clean the filter cartridge outside the shell.

[0023] As a further preference, a grid plate is connected to one end of the shell adjacent to the inspection valve along the circumference of the inner wall of the main flow channel.

[0024] By adopting the above technical solution, the provided grid plate can support the filter cartridge in the shell, thereby ensuring the stability of the filter cartridge.

[0025] As a further preference, the sewage discharge structure includes a sewage discharge valve, a sewage discharge hose and a funnel drain pipe. The sewage discharge hose is connected to the lower end side of the shell and / or the upper end side of the inspection valve through the sewage discharge valve. The sewage discharge hose is also connected to the funnel drain pipe to collect sewage and discharge it externally.

[0026] By adopting the above technical solution, when performing backwashing operations, the inspection personnel open the sewage valve, and the sewage is discharged into the sewage hose along the sewage valve, and then the sewage is discharged through the funnel drain pipe.

[0027] In summary, the utility model at least includes the following beneficial technical effects:

[0028] 1. When it is necessary to clean impurities at the air valve node, the inspection personnel first close the inspection valve, and then open the first switch valve and the sewage structure, and guide the water in the water pipeline through the backwash pipe to backwash the filter component. The sewage formed after flushing is discharged through the sewage structure, so as to realize fast and convenient cleaning of the filter component.

[0029] 2. When backwash pipes are connected to the upper end of the main channel and the air valve, multiple backwash pipes can synchronously guide the water flow to synchronously flush the air valve and the filter components.

[0030] 3. The installed pressure monitoring device can dynamically monitor the water pressure in the central filter, making it convenient for inspection personnel to control the blockage of the filter components in the central filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a backwash filter air valve group in an embodiment of the utility model;

[0032] Figure 2 It is a partial cross-sectional structural schematic diagram of the central filter in the embodiment of the utility model;

[0033] Figure 3 It is a schematic cross-sectional structural diagram of the filter component in the embodiment of the utility model.

[0034] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0035] 1. Central filter; 2. Air valve; 3. Air collecting neck; 4. Inspection valve; 5. Backwash pipe; 6. First switch valve; 7. Sewage discharge structure; 71. Sewage discharge valve; 72. Sewage discharge hose; 73. Funnel discharge pipe; 8. Multi-way connector; 9. Second switch valve; 11. Shell; 111. DC short pipe; 112. Branch pipe; 12. Filter component; 121. Filter cartridge; 122. Accumulated ring; 123. Perforated filter plate; 124. Reinforcement plate; 13. Inspection cover; 14. Grid plate; 15. Pressure monitoring device; 10. Main flow channel; 20. Branch flow channel; 30. Inspection port. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0037] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The following is combined with Figure 1-3 The utility model is described in further detail.

[0041] The utility model embodiment discloses a backwashing filter air valve group.

[0042] Reference Figure 1-3 The backwash filter air valve group includes a central filter 1 and a plurality of air valves 2, wherein: the central filter 1 includes a housing 11 and a filter component 12, the housing 11 is provided with a main channel 10 and a plurality of branch channels 20 distributed around the main channel 10 and connected to the main channel 10. The lower end of the main channel 10 is through, and a maintenance valve 4 is installed at the lower end of the main channel 10, and the maintenance valve 4 is used to connect with the gas collecting neck 3 of the water supply pipeline; the ends of the plurality of branch channels 20 away from the main channel 10 are connected with the plurality of air valves 2 one by one. The filter component 12 is installed in the main channel 10 to filter the fluid flowing from the main channel 10 into the branch channels 20.

[0043] In addition, the upper end of the main channel 10 and / or the upper end side of the air valve 2 are connected to a backwash pipe 5, the water inlet end of the backwash pipe 5 is used to connect to the water supply pipeline to introduce backwash water, and the backwash pipe 5 is connected to a first switch valve 6 for switching the backwash pipe 5; in order to discharge the sewage formed after backwashing, the lower end side of the shell 11 and / or the upper end side of the inspection valve 4 are connected to a sewage discharge structure 7.

[0044] Furthermore, the housing 11 includes a DC short pipe 111, and a plurality of branch pipes 112 distributed around the DC short pipe 111 and connected to the DC short pipe 111. The main channel 10 is formed in the DC short pipe 111, and the branch channel 20 is formed in the branch pipe 112. An inspection port 30 connected to the main channel 10 is provided at the upper end of the DC short pipe 111 of the housing 11, and a detachable inspection cover 13 is also installed at the outer end of the inspection port 30. The filter component 12 is detachably installed in the main channel 10, and the filter component 12 can be taken out along the inspection port 30.

[0045] Furthermore, in order to facilitate the inspection personnel to control the blockage of the central filter 1, a pressure monitoring device 15 for monitoring the water pressure in the main channel 10 is connected to the upper end of the shell 11. The pressure monitoring device 15 can be a pressure transmitter with a digital display. Preferably, in this embodiment, the pressure monitoring device 15 is connected to the top of the inspection cover 13, and its detection end extends into the main channel 10. In other embodiments, the pressure monitoring device 15 can also be installed on the side wall at the top of the shell 11; in addition, the pressure monitoring device 15 can also include two pressure sensors respectively arranged at the top and bottom of the shell 11 for monitoring the upper and lower pressure differences of the shell 11.

[0046] Furthermore, the filter component 12 can be any one of a filter screen, a filter cartridge 121 , a filter element, a filter plate, etc. In this embodiment, the filter component 12 includes a filter cartridge 121 , and a filter surface of the filter cartridge 121 covers the communication port between the main channel 10 and the branch channel 20 .

[0047] Further, see Figure 2 and Figure 3 The end of the filter cartridge 121 near the inspection valve 4 is connected to a accumulating ring 122 along the inner wall of the filter cartridge 121. The upper end surface of the accumulating ring 122 can carry impurities intercepted by the filter surface of the filter cartridge 121. In addition, the filter cartridge 121 is connected to a filter plate 123 with holes along the inner wall thereof. The filter plate 123 with holes divides the inner cavity of the filter cartridge 121 into two upper and lower chambers. The end of the filter cartridge 121 away from the inspection valve 4 is connected to a reinforcing plate 124 with holes along the inner wall of the filter cartridge 121. The reinforcing plate 124 is connected to a lifting lug.

[0048] Further, see Figure 2The end of the housing 11 adjacent to the inspection valve 4 is connected with a grid plate 14 along the inner wall circumferentially of the main flow channel 10. The grid plate 14 supports the filter cartridge 121 in the housing 11, so as to achieve stable installation of the filter cartridge 121 in the housing 11.

[0049] Further, see Figure 1 The backwash filter air valve group also includes a multi-way connector 8 and a second switch valve 9. The water inlet port of the second switch valve 9 is used to communicate with the inner cavity of the gas collecting neck 3, and the water outlet port of the second switch valve 9 is connected to the water inlet end of the backwash pipe 5 through the multi-way connector 8.

[0050] Specifically, in this embodiment, two air valves 2 are provided, and three backwash pipes 5 are provided. The water outlet ports of two backwash pipes 5 are connected to the upper ends of the valve bodies of the two air valves 2 in a one-to-one correspondence, and the water outlet port of the other backwash pipe 5 is connected to the upper end of the main flow channel 10 through the first switch valve 6 along the top of the inspection cover 13.

[0051] It should be noted that in other embodiments, the number of air valves 2 can also be three, four, etc.; the first switch valve 6 can be any one of a ball valve, a gate valve, a butterfly valve, a solenoid valve, etc. In addition, in the backwash filter air valve group, the backwash pipe 5 can be connected only between the air valve 2 and the water pipeline, or only between the top of the central filter 1 and the water pipeline. The user can choose according to actual use needs.

[0052] Furthermore, in order to realize the external discharge of sewage, in this embodiment, the sewage discharge structure 7 includes a sewage discharge valve 71. The lower end side surface of the shell 11 and the upper end side surface of the inspection valve 4 are both provided with sewage discharge ports, and two sewage discharge valves 71 are provided, and the sewage inlet port of one sewage discharge valve 71 is connected to the sewage discharge port at the lower end of the shell 11 through a pipeline, and the other sewage discharge valve 71 is connected to the sewage discharge port at the upper end of the inspection valve 4 through a pipeline.

[0053] Furthermore, the sewage ports of the two sewage valves 71 are connected to sewage hoses 72, and the two sewage hoses 72 can discharge sewage away from the air valve assembly. In order to facilitate sewage treatment, the sewage ends of the two sewage hoses 72 are gathered at one place, and a funnel drain pipe 73 for collecting sewage is provided at the sewage end gathering place of the two sewage hoses 72. The funnel drain pipe 73 can discharge sewage outward, and the sewage end of the funnel drain pipe 73 can extend to a sewage channel, a sewage soft pipe, etc.

[0054] It should be noted that the number of drain hoses 72 is determined according to the drain demand of the backwash filter air valve group; when the drain demand is high and the drain efficiency needs to be improved, a drain hose 72 can be added to the housing 11 or the inspection valve 4. When the drain demand is not high, only a drain hose 72 can be provided on the housing 11 or the inspection valve 4.

[0055] In addition, in other embodiments, the sewage discharge structure 7 includes a plurality of plugs, one plug detachably blocks the sewage discharge port at the lower end of the housing 11, and another plug detachably blocks the sewage discharge port of the inspection valve 4. When sewage discharge is required, only the plugs need to be removed.

[0056] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A backwash filter air valve group, characterized in that: It comprises a central filter (1) and a plurality of air valves (2), wherein: The central filter (1) comprises a shell (11) and a filter component (12); a main channel (10) and a plurality of branch channels (20) distributed in the circumferential direction of the main channel (10) and connected to the main channel (10) are arranged inside the shell (11); the lower end of the main channel (10) is through-connected; a check valve (4) for connecting to a water pipeline gas collecting neck (3) is installed at the lower end of the main channel (10); ends of the plurality of branch channels (20) away from the main channel (10) are connected to a plurality of air valves (2) in a one-to-one correspondence; the filter component (12) is installed in the main channel (10) to filter the fluid flowing from the main channel (10) into the branch channels (20); The upper end of the main flow channel (10) and / or the upper end side of the air valve (2) are connected to a backwash pipe (5); the water inlet end of the backwash pipe (5) is used to connect to a water pipeline to introduce backwash water; the backwash pipe (5) is provided with a first switch valve (6) for opening and closing the backwash pipe (5); The lower end side surface of the housing (11) and / or the upper end side surface of the inspection valve (4) are connected to a sewage discharge structure (7) for sewage discharge.

2. A backwash filter air valve assembly according to claim 1, characterized in that: It also includes a multi-way connector (8) and a second switch valve (9), wherein the water inlet port of the second switch valve (9) is used to communicate with the inner cavity of the gas collecting neck (3), and the water outlet port of the second switch valve (9) is connected to the water inlet end of the backwash pipe (5) through the multi-way connector (8).

3. A backwash filter air valve assembly according to claim 1, characterized in that: It also includes a pressure monitoring device (15) connected to the top of the housing (11) for monitoring the water pressure in the main channel (10).

4. A backwash filter air valve assembly according to any one of claims 1 to 3, characterized in that: The filter component (12) comprises a filter cartridge (121), and the filter surface of the filter cartridge (121) covers the communication port between the main flow channel (10) and the branch flow channel (20).

5. A backwash filter air valve assembly according to claim 4, characterized in that: One end of the filter cartridge (121) adjacent to the inspection valve (4) is connected to a stacking ring (122) along the circumferential direction of the inner wall of the filter cartridge (121).

6. A backwash filter air valve assembly according to claim 4, characterized in that: The filter cartridge (121) is connected to a filter plate with holes (123) along the circumference of its inner wall, and the filter plate with holes (123) divides the inner cavity of the filter cartridge (121) into two chambers.

7. A backwash filter air valve assembly according to claim 4, characterized in that: One end of the filter cartridge (121) away from the inspection valve (4) is connected to a reinforcement plate (124) with holes along the circumference of the inner wall of the filter cartridge (121), and a lifting lug is connected to the reinforcement plate (124).

8. A backwash filter air valve assembly according to claim 4, characterized in that: The filter cartridge (121) is detachably connected to the housing (11); an inspection port (30) communicating with the main flow channel (10) is provided at the upper end of the housing (11); a detachable inspection cover (13) is also installed at the outer end of the inspection port (30).

9. A backwash filter air valve assembly according to claim 8, characterized in that: One end of the housing (11) adjacent to the inspection valve (4) is connected to a grid plate (14) along the circumferential direction of the inner wall of the main flow channel (10).

10. A backwash filter air valve assembly according to any one of claims 1 to 3, characterized in that: The sewage discharge structure (7) comprises a sewage discharge valve (71), a sewage discharge hose (72) and a funnel discharge pipe (73). The sewage discharge hose (72) is connected to the lower end side of the shell (11) and / or the upper end side of the inspection valve (4) through the sewage discharge valve (71). The sewage discharge hose (72) is also connected to the funnel discharge pipe (73) to collect sewage and discharge it externally.

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