Compressed air distribution device of filter

Abstract

The compressed air distribution device of the filter comprises a compressed air main pipeline, a first connecting pipe is fixedly connected to the surface of the compressed air main pipeline, a valve is fixedly installed on the first connecting pipe, a second connecting pipe is fixedly connected to the end of the first connecting pipe, and a third connecting pipe is fixedly connected to the end of the second connecting pipe. The end of the third connecting pipe is fixedly connected with an air outlet header pipe which is located in the filter and connected with an air distribution pipe, the air distribution pipe is fixedly installed in the filter through first channel steel and second channel steel, and a plurality of air outlet holes are evenly formed in the surface of the air distribution pipe. The utility model has the beneficial effects of more reasonable structural design, novel conception, easiness in processing, low processing and manufacturing cost and convenience in operation, can provide a compressed air source for the filter, and can uniformly blow out compressed air, so that a filtering medium is uniformly distributed and is prevented from being washed away by reverse flowing water to cause waste and reduce the filtering efficiency, and the service life of the filter is prolonged. The operation is safer and more reliable.

Description

Technical Field

[0001] This utility model relates to the field of industrial filter auxiliary equipment technology, specifically a compressed air distribution device for a filter. Background Technology

[0002] High-speed industrial water filters are one of the main devices in modern industrial water treatment. They are ideal for purifying turbid water (containing iron oxide scale and oil) from steel rolling and continuous casting processes in steel plants, as well as for side-stream filtration in circulating systems. The filter media consists of anthracite, natural sea sand, and gravel bedding.

[0003] Backwash filters are a type of high-speed industrial water filter. They operate on a simple principle: removing contaminants by changing the flow direction of the filter media. When filter media, such as anthracite, natural sea sand, or gravel pads, accumulate sufficient contaminants over a period of time, they can be loosened by reverse-flowing compressed air, followed by flushing with water or other cleaning agents to remove the contaminants, thus achieving the goal of reusing the filter media. However, in existing backwash filters, uneven distribution of the filter media due to uneven compressed air application to the filter element and media can lead to some media flowing back into the backwash system with the backwash water. This results in wasted filter media, pipe wear, and requires maintenance and repair, increasing workload and hindering the normal operation of the filter equipment.

[0004] The announcement number is CN203886352U, and the title is: "An Air Distribution Device for a Fiber Bundle Filter." It includes a main support, side supports, a main air pipe, and side air pipes. One main support is fixed to each of the radial sides of the filter tank's inner wall. A transverse main air pipe is fixed between the two main supports. Both ends of the main air pipe are sealed. An air inlet is formed on the lower side wall of the main air pipe. Multiple flanges are symmetrically distributed on the longitudinal sides of the main air pipe, and each flange corresponds to a side air pipe coaxially connected to it. Multiple exhaust holes are evenly distributed on the upper wall of each side air pipe. A side support is fixed parallel to the main air pipe on both sides, with both ends fixed to the inner wall of the filter tank. Side air pipe insertion holes are evenly distributed on each side support corresponding to each side air pipe. This air distribution device allows the fiber bundles suspended above the device to be thoroughly and completely washed, resulting in clean and thorough cleaning of the cellulose and high compressed air utilization.

[0005] The aforementioned air distribution device can solve the air supply problem, but the air output force of the air distribution device is still insufficient, and it cannot quickly loosen the filter media in the filter, thus delaying the filter efficiency. Utility Model Content

[0006] The purpose of this utility model is to provide a compressed air distribution device for a filter with a more reasonable structural design, novel concept, easy processing, low processing and manufacturing cost, convenient operation, and the ability to provide a compressed air source for the filter. It can blow out compressed air evenly, so that the filter medium is evenly distributed and will not be washed away by backflow water, causing waste and reduced filtration efficiency. It is also safer and more reliable to operate.

[0007] This utility model discloses a compressed air distribution device for a filter, comprising a compressed air main pipe, a first connecting pipe fixedly connected to the surface of the compressed air main pipe, a valve fixedly installed on the first connecting pipe, a second connecting pipe fixedly connected to the end of the first connecting pipe, a third connecting pipe fixedly connected to the end of the second connecting pipe, and the end of the third connecting pipe fixedly connected to an outlet main pipe. The outlet main pipe is located inside the filter and is connected to an air distribution pipe. The air distribution pipe is fixedly installed inside the filter through a first channel steel and a second channel steel, and multiple air outlet holes are evenly opened on the surface of the air distribution pipe.

[0008] The first and second channel steels are fixedly installed at both ends on the inner wall of the filter, and multiple air distribution pipes are fixedly installed on the surface of the first and second channel steels, with the air distribution pipes set horizontally.

[0009] The gas distribution pipe includes a first gas distribution pipe and a second gas distribution pipe. The first gas distribution pipe is fixedly connected to one side wall of the main gas outlet pipe and is fixedly installed on the surface of the second channel steel. The second gas distribution pipe is fixedly connected to the other side wall of the main gas outlet pipe and is fixedly installed on the surface of the first channel steel.

[0010] The air outlets are evenly distributed on the surfaces of the first and second air distribution pipes, with three air outlets per group, and the included angle between the air outlets on both sides is 90°. Each group of air outlets is vertically arranged on the surfaces of the first and second air distribution pipes, and multiple groups of air outlets are evenly distributed horizontally on the surfaces of the first and second air distribution pipes, with the air outlets arranged in an array.

[0011] The main compressed air pipeline is connected to a compressed air source and communicates with the first, second, and third connecting pipes, transmitting compressed air to the main outlet pipe and the air distribution pipes to ensure a sufficient supply of compressed air. The main outlet pipe and air distribution pipes are located inside the filter. Air distribution pipes are evenly distributed on both sides of the main outlet pipe. Compressed air enters the main outlet pipe and flows out through the air outlet holes on the air distribution pipes. The air distribution pipes are evenly distributed inside the filter, located below the filter plate, providing compressed air to the filter from all directions. The air distribution pipes include a first air distribution pipe and a second air distribution pipe. The first air distribution pipe is fixedly connected to one side wall of the main outlet pipe, and the second air distribution pipe is fixedly connected to the other side wall of the main outlet pipe. Compressed air can be simultaneously injected into the first and second air distribution pipes on both sides, ensuring a sufficient and powerful air supply. Based on the filter media inside the filter, compressed air is precisely supplied, while ensuring that the compressed air is evenly distributed on the bottom surface of the filter media. Multiple sets of air outlets allow the compressed air to flow out evenly, blowing out impurities from the filter element. This further ensures a uniform and loose distribution of the filter media, facilitating subsequent water washing of the filter media. The air outlets are arranged in groups of three, vertically positioned on the surfaces of the first and second air distribution pipes. Multiple sets of air outlets are evenly distributed horizontally on the surfaces of the first and second air distribution pipes, forming an array. This ensures that compressed air flows out from all directions, providing sufficient power to quickly blow out impurities from the filter element. This further ensures a uniform and loose distribution of the filter media, saving on filter media consumption, reducing pipe wear, extending the service life of the industrial water high-speed filter, and guaranteeing the safe and efficient operation of the filter.

[0012] The length of the second air distribution pipe is longer than the length of the first air distribution pipe.

[0013] The lengths of the first and second air distribution pipes decrease sequentially from the middle to both sides.

[0014] A gasket is fixedly installed between the second connecting pipe and the third connecting pipe.

[0015] The valves include a manual butterfly valve and an electric butterfly valve. The manual butterfly valve and the electric butterfly valve are sequentially installed on the first connecting pipe. The manual butterfly valve and the electric butterfly valve are fixedly installed on the first connecting pipe by a first hexagonal head bolt and a hexagonal head nut, respectively. A flat washer is provided on the hexagonal head bolt.

[0016] The valve also includes a one-way valve, which is fixedly installed on the first connecting pipe by a second hexagonal head bolt.

[0017] The system includes a manual butterfly valve, an electric butterfly valve, and a check valve. The manual and electric butterfly valves are fixed to the first connecting pipe using a first hexagonal head bolt and a hexagonal head nut, with flat washers on the hexagonal head bolts. The check valve is fixed to the first connecting pipe using a second hexagonal head bolt. The manual and electric butterfly valves are securely fixed to the first connecting pipe using the first hexagonal head bolt and hexagonal head nut, while the check valve is fixed to the first connecting pipe using the second hexagonal head bolt. This secure and reliable installation ensures the flow of compressed air. The manual butterfly valve is used to close during equipment maintenance to prevent compressed air from flowing into the filter. The electric butterfly valve is used to close or open the flow of compressed air into the filter as needed during normal equipment operation. The check valve is used to prevent water from flowing back into the main compressed air pipeline during normal equipment operation.

[0018] The beneficial effects of this utility model are:

[0019] 1) The main compressed air pipeline is connected to the compressed air source and communicates with the first, second, and third connecting pipes, transmitting compressed air to the main outlet pipe and the air distribution pipes to ensure a sufficient supply of compressed air. The main outlet pipe and air distribution pipes are located inside the filter. Air distribution pipes are evenly distributed on both sides of the main outlet pipe. Compressed air enters the main outlet pipe and flows out through the air outlet holes on the air distribution pipes. The air distribution pipes are evenly distributed inside the filter, located below the filter plate, providing compressed air to the filter from all directions. The air distribution pipes include a first air distribution pipe and a second air distribution pipe. The first air distribution pipe is fixedly connected to one side wall of the main outlet pipe, and the second air distribution pipe is fixedly connected to the other side wall of the main outlet pipe. The air distribution pipes can simultaneously fill the first and second air distribution pipes on both sides, ensuring a sufficient and powerful air supply. Based on the filter media inside the filter, compressed air is precisely supplied, while ensuring that the compressed air is evenly distributed on the bottom surface of the filter media. Multiple sets of air outlets allow the compressed air to flow out evenly, blowing out impurities from the filter element. This further ensures a uniform and loose distribution of the filter media, facilitating subsequent water washing of the filter media. The air outlets are arranged in groups of three, vertically positioned on the surfaces of the first and second air distribution pipes. Multiple sets of air outlets are evenly distributed horizontally on the surfaces of the first and second air distribution pipes, forming an array. This arrangement ensures that compressed air flows out from all directions, providing sufficient power to quickly blow out impurities from the filter element. This further ensures a uniform and loose distribution of the filter media, saving on filter media consumption, reducing pipe wear, extending the service life of the industrial water high-speed filter, and guaranteeing the safe and efficient operation of the filter.

[0020] 2) The system includes a manual butterfly valve, an electric butterfly valve, and a check valve. The manual and electric butterfly valves are fixed to the first connecting pipe using a first hexagonal head bolt and a hexagonal head nut, with flat washers on the hexagonal head bolts. The check valve is fixed to the first connecting pipe using a second hexagonal head bolt. The manual and electric butterfly valves are securely fixed to the first connecting pipe using the first hexagonal head bolt and hexagonal head nut, while the check valve is fixed to the first connecting pipe using the second hexagonal head bolt. This secure and reliable system ensures the flow of compressed air. The manual, electric, and check valves can be selected according to the operator's needs, allowing for better control of compressed air flow. In case of power failure, the electric butterfly valve can be selected, providing multiple options for various situations.

[0021] 3) This air distribution device features a more rational structural design, novel concept, ease of processing, low manufacturing cost, and convenient operation. It provides a source of compressed air for the filter, ensuring uniform distribution of the filter media and preventing it from being washed away by backwash water, thus avoiding waste and reduced filtration efficiency. Operation is safer and more reliable. This device solves the problem of uneven distribution of filter media caused by the uneven application of compressed air to the filter element and filter media in high-speed filters, which leads to some filter media flowing into the backwash system with the backwash water, resulting in filter media waste and pipe wear. It addresses a key issue in the use of high-speed filters, saving filter media wear, reducing pipe wear, extending the service life of industrial water high-speed filters, and ensuring safe and efficient operation. Attached Figure Description

[0022] Figure 1 This is the front view of the present invention;

[0023] Figure 2 This is the left view of the present invention;

[0024] Figure 3 This is a top view of the present invention;

[0025] Figure 4 for Figure 3 AA section view in the middle;

[0026] Figure 5 for Figure 3 A magnified structural diagram at point B in the middle.

[0027] In the diagram: air distribution pipe 1, main air outlet pipe 101, air outlet 102, first air distribution pipe 103, second air distribution pipe 104, first connecting pipe 2, manual butterfly valve 3, short section 4, electric butterfly valve 5, one-way valve 6, second connecting pipe 7, third connecting pipe 8, flat washer 9, hexagonal head nut 10, first hexagonal head bolt 11, second hexagonal head bolt 12, gasket 13, first channel steel 14, second channel steel 15, compressed air main pipe 16, filter 17. Detailed Implementation

[0028] Example 1.

[0029] The following will be combined with the appendix Figure 1-5 The present invention will be further described below.

[0030] This utility model includes an air distribution pipe 1, an air outlet main pipe 101, an air outlet 102, a first air distribution pipe 103, a second air distribution pipe 104, a first connecting pipe 2, a manual butterfly valve 3, a short section 4, an electric butterfly valve 5, a second connecting pipe 7, a third connecting pipe 8, a flat washer 9, a hexagonal head nut 10, a first hexagonal head bolt 11, a gasket 13, a first channel steel 14, a second channel steel 15, a compressed air main pipeline 16, and a filter 17. The specific structure includes the compressed air main pipeline 16, with a surface fixed connection... A first connecting pipe 2 is connected, and a valve is fixedly installed on the first connecting pipe 2. A second connecting pipe 7 is fixedly connected to the end of the first connecting pipe 2, and a third connecting pipe 8 is fixedly connected to the end of the second connecting pipe 7. The end of the third connecting pipe 8 is fixedly connected to the main air outlet pipe 101. The main air outlet pipe 101 is located inside the filter 17 and is connected to the air distribution pipe 1. The air distribution pipe 1 is fixedly installed inside the filter 17 through the first channel steel 14 and the second channel steel 15. Multiple air outlet holes 102 are evenly opened on the surface of the air distribution pipe 1.

[0031] The two ends of the first channel steel 14 and the second channel steel 15 are respectively fixedly installed on the inner wall of the filter 17. Multiple air distribution pipes 1 are fixedly installed on the surface of the first channel steel 14 and the second channel steel 15, and the air distribution pipes 1 are horizontally arranged.

[0032] The air distribution pipe 1 includes a first air distribution pipe 103 and a second air distribution pipe 104. The first air distribution pipe 103 is fixedly connected to one side wall of the main air outlet pipe 101 and is fixedly installed on the surface of the second channel steel 15. The second air distribution pipe 104 is fixedly connected to the other side wall of the main air outlet pipe 101 and is fixedly installed on the surface of the first channel steel 14.

[0033] The air outlets 102 are evenly distributed on the surfaces of the first air distribution pipe 103 and the second air distribution pipe 104. The air outlets 102 are arranged in groups of three, and the included angle between the air outlets 102 arranged on both sides is 90°. Each group of air outlets 102 is vertically arranged on the surface of the first air distribution pipe 103 and the second air distribution pipe 104. Multiple groups of air outlets 102 are evenly distributed on the surface of the first air distribution pipe 103 and the second air distribution pipe 104 in a horizontal direction. The air outlets 102 are arranged in an array.

[0034] The length of the second air distribution pipe 104 is longer than the length of the first air distribution pipe 103.

[0035] The lengths of the first air distribution pipe 103 and the second air distribution pipe 104 decrease sequentially from the middle to both sides.

[0036] A gasket 13 is fixedly installed between the second connecting pipe 7 and the third connecting pipe 8.

[0037] The valves include a manual butterfly valve 3 and an electric butterfly valve 5. The manual butterfly valve 3 and the electric butterfly valve 5 are sequentially arranged on the first connecting pipe 2. The manual butterfly valve 3 and the electric butterfly valve 5 are fixedly installed on the first connecting pipe 2 by a first hexagonal head bolt 11 and a hexagonal head nut 10, respectively. A flat washer 9 is provided on the hexagonal head bolt 11.

[0038] Instructions for use: Connect the main compressed air pipe 16 to the compressed air source. Open the manual butterfly valve 3 and the electric butterfly valve 5. Compressed air enters the main outlet pipe 101 through the second connecting pipe 7 and the third connecting pipe 8, and then enters the first air distribution pipe 103 and the second air distribution pipe 104 set on both sides respectively. Finally, it flows out through the air outlet 102. The air distribution pipes 1 are evenly distributed inside the filter 17 and are located below the filter plate, which can provide compressed air to the filter 17 from all directions. The air distribution pipes 1 include the first air distribution pipe 103 and the second air distribution pipe 104. The first air distribution pipe 103 is fixedly connected to one side of the main outlet pipe 101. The second air distribution pipe 104 is fixedly connected to the other side wall of the main air outlet pipe 101, and is securely fixed. The air distribution pipe 1 can simultaneously fill the first air distribution pipe 103 and the second air distribution pipe 104 on both sides with compressed air. The air source is well distributed and the power is sufficient. It can accurately provide compressed air according to the filter medium inside the filter 17, and at the same time, it can further ensure that the compressed air is fully distributed on the bottom surface of the filter medium. The compressed air can be evenly discharged through multiple sets of air outlet holes 102 to blow out impurities in the filter element. This can further ensure that the filter material in the filter element is evenly and loosely distributed, so that the subsequent process of washing the filter material with water can proceed smoothly.

[0039] Example 2.

[0040] This utility model includes an air distribution pipe 1, an air outlet main pipe 101, an air outlet 102, a first air distribution pipe 103, a second air distribution pipe 104, a first connecting pipe 2, a manual butterfly valve 3, a short section 4, an electric butterfly valve 5, a one-way valve 6, a second connecting pipe 7, a third connecting pipe 8, a flat washer 9, a hexagonal head nut 10, a first hexagonal head bolt 11, a second hexagonal head bolt 12, a gasket 13, a first channel steel 14, a second channel steel 15, a compressed air main pipeline 16, and a filter 17. The specific structure includes the compressed air main pipeline 16 and the compressed air main pipe... A first connecting pipe 2 is fixedly connected to the surface of channel 16. A valve is fixedly installed on the first connecting pipe 2. A second connecting pipe 7 is fixedly connected to the end of the first connecting pipe 2. A third connecting pipe 8 is fixedly connected to the end of the second connecting pipe 7. The end of the third connecting pipe 8 is fixedly connected to the main air outlet pipe 101. The main air outlet pipe 101 is located inside the filter 17. The main air outlet pipe 101 is connected to the air distribution pipe 1. The air distribution pipe 1 is fixedly installed inside the filter 17 through the first channel steel 14 and the second channel steel 15. Multiple air outlet holes 102 are evenly opened on the surface of the air distribution pipe 1.

[0041] The two ends of the first channel steel 14 and the second channel steel 15 are respectively fixedly installed on the inner wall of the filter 17. Multiple air distribution pipes 1 are fixedly installed on the surface of the first channel steel 14 and the second channel steel 15, and the air distribution pipes 1 are horizontally arranged.

[0042] The air distribution pipe 1 includes a first air distribution pipe 103 and a second air distribution pipe 104. The first air distribution pipe 103 is fixedly connected to one side wall of the main air outlet pipe 101 and is fixedly installed on the surface of the second channel steel 15. The second air distribution pipe 104 is fixedly connected to the other side wall of the main air outlet pipe 101 and is fixedly installed on the surface of the first channel steel 14.

[0043] The air outlets 102 are evenly distributed on the surfaces of the first air distribution pipe 103 and the second air distribution pipe 104. The air outlets 102 are arranged in groups of three, and the included angle between the air outlets 102 arranged on both sides is 90°. Each group of air outlets 102 is vertically arranged on the surface of the first air distribution pipe 103 and the second air distribution pipe 104. Multiple groups of air outlets 102 are evenly distributed on the surface of the first air distribution pipe 103 and the second air distribution pipe 104 in a horizontal direction. The air outlets 102 are arranged in an array.

[0044] The length of the second air distribution pipe 104 is longer than the length of the first air distribution pipe 103.

[0045] The lengths of the first air distribution pipe 103 and the second air distribution pipe 104 decrease sequentially from the middle to both sides.

[0046] A gasket 13 is fixedly installed between the second connecting pipe 7 and the third connecting pipe 8.

[0047] The valves include a manual butterfly valve 3 and an electric butterfly valve 5. The manual butterfly valve 3 and the electric butterfly valve 5 are sequentially arranged on the first connecting pipe 2. The manual butterfly valve 3 and the electric butterfly valve 5 are fixedly installed on the first connecting pipe 2 by a first hexagonal head bolt 11 and a hexagonal head nut 10, respectively. A flat washer 9 is provided on the hexagonal head bolt 11.

[0048] The valve also includes a one-way valve 6, which is fixedly installed on the first connecting pipe 2 by a second hexagonal head bolt 12.

[0049] Instructions for use: Connect the main compressed air pipe 16 to the compressed air source. Open the manual butterfly valve 3 and the electric butterfly valve 5. Compressed air enters the main outlet pipe 101 through the second connecting pipe 7 and the third connecting pipe 8, and then enters the first air distribution pipe 103 and the second air distribution pipe 104 set on both sides respectively. Finally, it flows out through the air outlet 102. The air distribution pipes 1 are evenly distributed inside the filter 17 and are located below the filter plate, which can provide compressed air to the filter 17 from all directions. The air distribution pipes 1 include the first air distribution pipe 103 and the second air distribution pipe 104. The first air distribution pipe 103 is fixedly connected to one side of the main outlet pipe 101. The second air distribution pipe 104 is fixedly connected to the other side wall of the main air outlet pipe 101, and is securely fixed. The air distribution pipe 1 can simultaneously fill the first air distribution pipe 103 and the second air distribution pipe 104 on both sides with compressed air. The air source is well distributed and the power is sufficient. It can accurately provide compressed air according to the filter medium inside the filter 17, and at the same time, it can further ensure that the compressed air is fully distributed on the bottom surface of the filter medium. The compressed air can be evenly discharged through multiple sets of air outlet holes 102 to blow out impurities in the filter element. This can further ensure that the filter material in the filter element is evenly and loosely distributed, so that the subsequent process of washing the filter material with water can proceed smoothly.

[0050] The function of manual butterfly valve 3: To close during equipment maintenance to prevent compressed air from flowing into filter 17 during maintenance. The function of electric butterfly valve 5: To close or open the flow of compressed air into filter 17 as needed during normal equipment operation. The function of check valve 6: To prevent water in filter 17 from flowing back into the main compressed air pipeline 16 during normal equipment operation.

Claims

1. A compressed air distribution device for a filter, characterized in that: The system includes a main compressed air pipe (16), a first connecting pipe (2) is fixedly connected to the surface of the main compressed air pipe (16), a valve is fixedly installed on the first connecting pipe (2), a second connecting pipe (7) is fixedly connected to the end of the first connecting pipe (2), a third connecting pipe (8) is fixedly connected to the end of the second connecting pipe (7), the end of the third connecting pipe (8) is fixedly connected to the main exhaust pipe (101), the main exhaust pipe (101) is located inside the filter (17), the main exhaust pipe (101) is connected to the air distribution pipe (1), the air distribution pipe (1) is fixedly installed inside the filter (17) through the first channel steel (14) and the second channel steel (15), and multiple air outlet holes (102) are evenly opened on the surface of the air distribution pipe (1).

2. The compressed air distribution device for a filter as described in claim 1, characterized in that: The first channel steel (14) and the second channel steel (15) are respectively fixedly installed on the inner wall of the filter (17). Multiple air distribution pipes (1) are fixedly installed on the surface of the first channel steel (14) and the second channel steel (15), and the air distribution pipes (1) are set horizontally.

3. The compressed air distribution device for a filter as described in claim 2, characterized in that: The air distribution pipe (1) includes a first air distribution pipe (103) and a second air distribution pipe (104). The first air distribution pipe (103) is fixedly connected to one side wall of the main air outlet pipe (101) and is fixedly installed on the surface of the second channel steel (15). The second air distribution pipe (104) is fixedly connected to the other side wall of the main air outlet pipe (101) and is fixedly installed on the surface of the first channel steel (14).

4. The compressed air distribution device for a filter as described in claim 3, characterized in that: The air outlets (102) are evenly distributed on the surface of the first air distribution pipe (103) and the second air distribution pipe (104). The air outlets (102) are arranged in groups of three, and the included angle between the air outlets (102) arranged on both sides is 90°. Each group of air outlets (102) is vertically arranged on the surface of the first air distribution pipe (103) and the second air distribution pipe (104). Multiple groups of air outlets (102) are evenly distributed on the surface of the first air distribution pipe (103) and the second air distribution pipe (104) in a horizontal direction. The air outlets (102) are arranged in an array.

5. The compressed air distribution device for a filter as described in claim 4, characterized in that: The length of the second air distribution pipe (104) is longer than the length of the first air distribution pipe (103).

6. The compressed air distribution device for a filter as described in claim 5, characterized in that: The lengths of the first air distribution pipe (103) and the second air distribution pipe (104) decrease sequentially from the middle to both sides.

7. The compressed air distribution device for a filter as described in claim 6, characterized in that: A gasket (13) is fixedly installed between the second connecting pipe (7) and the third connecting pipe (8).

8. The compressed air distribution device for a filter as described in claim 7, characterized in that: The valves include a manual butterfly valve (3) and an electric butterfly valve (5). The manual butterfly valve (3) and the electric butterfly valve (5) are sequentially arranged on the first connecting pipe (2). The manual butterfly valve (3) and the electric butterfly valve (5) are fixedly installed on the first connecting pipe (2) by the first hexagonal head bolt (11) and the hexagonal head nut (10), respectively. A flat washer (9) is provided on the hexagonal head bolt (11).

9. The compressed air distribution device for a filter as described in claim 8, characterized in that: The valve also includes a one-way valve (6), which is fixedly installed on the first connecting pipe (2) by a second hexagonal head bolt (12).

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