V-shaped filter gas distribution system

Abstract

The utility model discloses a V-shaped filter gas distribution system, and particularly relates to the technical field of filter gas distribution, which comprises two filter plates mounted in a V-shaped filter, a drainage channel is arranged between the two filter plates, and a partition plate is fixed at the bottom of the drainage channel and is used for dividing the bottom space of the drainage channel into an upper cavity A and a lower cavity B which are independent from each other; an air pipe for supplying air into the cavity A is arranged on the front side of the V-shaped filter tank, and a plurality of air distribution pipe assemblies for introducing the air in the cavity A into water below the filter plate are arranged on the two sides of the drainage channel. According to the utility model, gas for backwashing is directly introduced into backwashing water by utilizing the square pipe, the vertical pipe and the ball head, so that gas-water mixing is promoted, on one hand, the flow speed of backwashing water flow is stable, a filter material is prevented from being impacted, on the other hand, the gas-water mixing effect can be improved, and the backwashing effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of air distribution technology for filter beds, and specifically to a V-type air distribution system for filter beds. Background Technology

[0002] V-type filters are a type of rapid filter, named for the V-shaped inlet tank. They are also called homogeneous media filters. V-type filters utilize air and water backwashing, combined with surface cleaning of the water to be filtered. Like other ordinary filters, V-type filters use quartz sand to physically trap suspended particles in the filtered water. As filtration time increases, the trapped suspended particles fill the gaps between the sand grains, further trapping more particles. Once a certain amount is trapped, the filtration resistance increases accordingly, and the trapped material gradually penetrates to the bottom. When a certain amount is reached, the backwashing process is initiated to remove the particulate contaminants trapped in the filter media, and then the normal filtration process resumes.

[0003] The existing air distribution structure of V-shaped filters, as shown in prior art publication CN215841954U, consists of an air and water distribution chamber, a horizontal drain pipe, and a vertical water and air distribution pipe. The water and air distribution pipes are located close to the bottom of the V-shaped filter. This causes the cross-sectional area of ​​the backwash water to be easily reduced by the top airflow when air and water backwashing are performed simultaneously. It is known that the flow velocity of the water is proportional to the size of the cross-sectional area. Therefore, in this case, the backwash water flow velocity will be too high, impacting the filter plate and ultimately affecting the stability of the filter media at the top of the filter plate. Utility Model Content

[0004] The purpose of this invention is to provide a V-type filter gas distribution system. By using square pipes, vertical pipes, and ball heads, the gas used for backwashing is directly introduced into the backwash water, so that the gas and water are mixed. On the one hand, this can make the backwash water flow stable and avoid impacting the filter media. On the other hand, it can also improve the gas-water mixing effect and ensure the backwashing effect, thereby solving the above-mentioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a V-shaped filter aeration system, including two filter plates installed inside the V-shaped filter, a drainage channel between the two filter plates, and a partition plate fixed at the bottom of the drainage channel to divide the bottom space of the drainage channel into two independent cavities A and B.

[0006] The front side of the V-shaped filter is provided with an air pipe for supplying air into the cavity A, and both sides of the drainage ditch are provided with multiple air distribution pipe assemblies for passing the gas in the cavity A into the backwash water below the filter plate.

[0007] Each gas distribution pipe assembly includes a square tube, the bottom end of which is fixedly connected to multiple vertical pipes, and the bottom end of each vertical pipe is fixedly connected to a hollow ball head. The outer wall of the bottom end of the ball head has multiple air outlet holes for gas to flow out, and the outflowing gas directly enters the backwash water to achieve gas-water mixing.

[0008] Preferably, the square tube is located at the bottom of the filter plate, and the inside of the vertical tube is provided with a sealing plug that only allows gas to flow from top to bottom;

[0009] The sealing plug includes a sealing plug seat fixed to the bottom of the inner wall of the vertical pipe. A sealing plug head is inserted into the bottom of the sealing plug seat, and the top of the sealing plug head is inserted into the through hole in the middle of the sealing plug seat to block the upward flow of water inside the ball head.

[0010] Preferably, four piston rods are fixed to the top edge of the sealing plug, and a spring is fixed to the top of each piston rod, with the top of the spring fixed to the sealing plug seat.

[0011] Preferably, the sealing plug seat has a cylindrical cavity for accommodating the piston rod and spring, and the spring is in a compressed state when the sealing plug head is inserted into the sealing plug seat.

[0012] Preferably, the drainage ditch includes two mirror-distributed ditch side plates, with a ditch bottom plate fixed between the two ditch side plates. The partition is located at the bottom of the ditch bottom plate, and one end of a square tube located on both sides passes through the two ditch side plates respectively.

[0013] Preferably, both channel side plates have rectangular openings at their bottom ends for water flow.

[0014] A water pipe is provided on the front side of the V-shaped filter tank. One end of the water pipe extends between the two channel side plates, which is used to discharge filtered clean water and to send water between the two channel side plates to achieve water backwashing.

[0015] Preferably, one end of the water pipe is connected to the water pump, and one end of the air pipe is connected to the air pump. In order to control the backwashing process of air and water, valves are fixed at the outer ends of both the water pipe and the air pipe. By controlling the opening and closing of the valves, the water for backwashing can be controlled to enter the cavity B, and the air for backwashing can be controlled to enter the cavity A.

[0016] Preferably, each filter plate is equipped with multiple equally spaced filter heads. Each filter head consists of a filter cap and a filter rod. The filter cap is located at the top of the filter plate, and the filter rod penetrates through the filter plate. The filter heads prevent the filter media at the top of the filter plate from passing through the filter plate. Furthermore, water and air used for backwashing can move from the bottom to the top of the filter plate through the filter heads, thereby achieving the effect of washing away impurities in the filter media at the top of the filter plate.

[0017] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0018] 1. By using square tubes, vertical tubes, and ball heads to directly introduce the gas used for backwashing into the backwash water, the gas and water are mixed. On the one hand, this solves the problem of the backwash water flow cross-sectional area being affected by the backwash gas, making the backwash water flow smooth and avoiding impact on the filter media. On the other hand, it also improves the gas-water mixing effect and ensures the stability of the backwashing process.

[0019] 2. By using a partition to divide the bottom of the drainage channel into two independent chambers, A and B, air and water backwashing can be carried out independently without affecting each other. This also prevents the backwashing gas introduced into the bottom of the drainage channel from squeezing the backwashing water, thereby ensuring a stable water flow into the bottom of the filter plate. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the present invention installed after the V-shaped filter tank;

[0022] Figure 2 This is a schematic diagram of the gas distribution pipe assembly of this utility model installed after the V-shaped filter.

[0023] Figure 3 This is a schematic diagram of the partition and drainage channel of this utility model;

[0024] Figure 4 This is a schematic diagram of the drainage ditch and gas distribution pipe assembly of this utility model;

[0025] Figure 5 This is a cross-sectional view of the square tube, vertical tube, and ball head of this utility model;

[0026] Figure 6 For the present utility model Figure 5 Enlarged view of section A in the middle;

[0027] Figure 7 For the present utility model Figure 6 Enlarged view of section B;

[0028] Figure 8 This is a perspective view of the sealing plug of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. V-shaped filter bed; 2. Drainage ditch; 3. Filter plate; 4. Filter head; 5. Water pipe; 6. Air pipe; 7. Baffle plate; 8. Air distribution pipe assembly;

[0031] 21. Channel side plate; 22. Channel bottom plate; 23. Rectangular opening;

[0032] 81. Square tube; 82. Vertical tube; 83. Ball head; 84. Vent hole; 85. Sealing plug; 851. Sealing plug seat; 852. Sealing plug head; 853. Piston rod; 854. Spring; 855. Cylindrical cavity. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0034] This utility model provides, for example Figure 1-3 The illustrated V-shaped filter aeration system includes two filter plates 3 installed inside a V-shaped filter 1. A drainage channel 2 is provided between the two filter plates 3. The drainage channel 2 includes two mirror-distributed channel side plates 21, with a channel bottom plate 22 fixed between the two channel side plates 21. Rectangular openings 23 for water flow are provided at the bottom ends of both channel side plates 21. Filter media for filtering water is provided on the top of the filter plates 3. Multiple equally spaced filter heads 4 are installed on each filter plate 3. Each filter head 4 consists of a filter cap and a filter rod. The filter cap is located on the top of the filter plate 3. The filter rod passes through the filter plate 3, and the filter head 4 prevents the filter material at the top of the filter plate 3 from passing through the filter plate 3. The water to be filtered enters the interior of the V-shaped filter tank 1 from the V-shaped inlet grooves on both sides of the top of the V-shaped filter tank 1. It is filtered by the filter material at the top of the filter plate 3. The filtered water passes through the filter head 4 and moves to the bottom of the filter plate 3. Then it passes through the rectangular opening 23 and moves between the two channel side plates 21. A water pipe 5 is provided on the front side of the V-shaped filter tank 1. One end of the water pipe 5 extends into the space between the two channel side plates 21. The filtered clean water can be output through the water pipe 5, thus completing the purpose of filtering water.

[0035] Furthermore, backwash water can be introduced into the V-shaped filter tank 1 through the water pipe 5. An air pipe 6 is also provided on the front side of the V-shaped filter tank 1, which is mainly used to introduce backwash gas into the bottom of the V-shaped filter tank 1 to achieve the effect of washing away impurities in the filter material at the top of the filter plate 3, thus realizing the effect of air and water backwashing.

[0036] During backwashing, to ensure the stability of the process, such as... Figure 4 and 5As shown, a partition 7 is fixed at the bottom of the drainage ditch 2. The partition 7 is located at the bottom of the ditch bottom plate 22. The partition 7 can divide the bottom space of the drainage ditch 2 into two independent cavities A and B. One end of the water pipe 5 is connected to cavity B, and one end of the air pipe 6 is connected to cavity A. The other end of the water pipe 5 is connected to the water pump, and the other end of the air pipe 6 is connected to the air pump, so that air and water backwashing can be carried out independently. Valves are fixed at the outer ends of the water pipe 5 and the air pipe 6. By controlling the opening and closing of the valves, the water for backwashing can be controlled to enter cavity B, and the air for backwashing can be controlled to enter cavity A.

[0037] Furthermore, multiple gas distribution pipe assemblies 8 are provided on both sides of the drainage ditch 2 to introduce gas from cavity A into the water below filter plate 3, specifically as follows: Figure 5-8 As shown: Each air distribution pipe assembly 8 includes a square tube 81, which is located at the bottom of the filter plate 3. Multiple vertical pipes 82 are fixed to the bottom end of the square tube 81. A ball head 83 is fixedly connected to the bottom end of the vertical pipe 82. Multiple air outlets 84 are opened on the outer wall of the bottom end of the ball head 83 to allow gas to flow out. The air outlets 84 are directly inserted into the backwash water. The gas input through the air pipe 6, cavity A, square tube 81, vertical pipe 82 and ball head 83 can directly enter the backwash water to achieve gas-water mixing, ensure the backwash effect, and at the same time avoid the backwash gas from squeezing the backwash water and affecting the backwash water flow speed, so that the backwash water flow is stable and avoids impacting the filter media.

[0038] Meanwhile, to prevent backwash water from entering cavity A through riser 82, such as Figure 6-8 As shown, a sealing plug 85 is provided inside the vertical pipe 82, which only allows gas to flow from top to bottom. The sealing plug 85 includes a sealing plug seat 851 fixed to the bottom end of the inner wall of the vertical pipe 82. A sealing plug head 852 is inserted into the bottom end of the sealing plug seat 851. The top end of the sealing plug head 852 is inserted into the through hole in the middle of the sealing plug seat 851. Four piston rods 853 are fixed to the top edge of the sealing plug head 852. A spring 854 is fixed to the top end of each piston rod 853. The top end of the spring 854 is fixed to the sealing plug seat 851. A cylindrical cavity 855 is opened in the sealing plug seat 851 to accommodate the piston rods 853 and the springs 854.

[0039] After the backwash gas enters the interior of the vertical pipe 82 through the square pipe 81, it will push the sealing plug 852 to move downward. During the downward movement of the sealing plug 852, the piston rod 853 will move downward simultaneously, and the spring 854 will be stretched at the same time, so that the sealing plug 852 will no longer block the through hole in the middle of the sealing plug seat 851. Then the gas will smoothly enter the interior of the ball head 83 through the vertical pipe 82, and finally be discharged through the air outlet 84.

[0040] Conversely, if the backwash water flows upward along the ball head 83, it will push the sealing plug 852 to block the through hole in the middle of the sealing plug seat 851, thus preventing the water inside the ball head 83 from flowing upward. Simultaneously, the sealing plug 852 causes the gas inside the riser 82 to increase, raising the gas pressure. When this pressure exceeds the pressure applied to the sealing plug 852 by the backwash water, the gas will push the sealing plug 852 downward again, allowing the backwash gas to pass through the riser 82 and into the backwash water, promoting gas-water mixing and facilitating backwashing. This design not only prevents backwash water from flowing upward along the riser 82 but also solves the problem of poor gas-water mixing due to excessive water pressure in traditional backwashing processes, achieving two goals at once.

[0041] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A V-type filter tank air distribution system, comprising two filter plates (3) installed inside a V-type filter tank (1), characterized in that: Two filter plates (3) are provided with a drainage channel (2), the bottom of the drainage channel (2) is fixedly provided with a partition plate (7), which is used for separating the space at the bottom of the drainage channel (2) into two independent cavities A and B; The front side of the V-shaped filter tank (1) is provided with an air pipe (6) for sending air into the cavity A, and the two sides of the drainage channel (2) are provided with a plurality of air distribution pipe assemblies (8) for passing the gas in the cavity A into the backwashing water below the filter plate (3). Each air distribution pipe assembly (8) comprises a square pipe (81), the bottom end of the square pipe (81) is fixedly connected with a plurality of vertical pipes (82), the bottom end of the vertical pipe (82) is fixedly connected with a hollow ball head (83), and a plurality of gas outlet holes (84) are formed in the outer wall of the bottom end of the ball head (83).

2. The air distribution system for a V-type filter tank according to claim 1, characterized in that: The square pipe (81) is arranged at the bottom of the filter plate (3), and the vertical pipe (82) is internally provided with a sealing plug (85) allowing gas to flow from top to bottom only. The sealing plug (85) comprises a sealing plug seat (851) fixed to the inner wall of the vertical pipe (82) at the bottom end, the bottom end of the sealing plug seat (851) is inserted with a sealing plug head (852), the top end of the sealing plug head (852) is inserted into the through hole in the middle of the sealing plug seat (851), and the sealing plug head (852) is used for blocking the upward flow of water in the ball head (83).

3. The air distribution system for a V-type filter tank according to claim 2, characterized in that: The top end of the sealing plug head (852) is fixedly provided with four piston rods (853), the top end of each piston rod (853) is fixedly provided with a spring (854), and the top end of the spring (854) is fixed to the sealing plug seat (851).

4. The air distribution system for a V-type filter tank according to claim 2, characterized in that: The sealing plug seat (851) is internally provided with a cylindrical cavity (855) for accommodating the piston rod (853) and the spring (854), and the spring (854) is in a compressed state when the sealing plug head (852) is inserted into the sealing plug seat (851).

5. The air distribution system for a V-type filter tank according to claim 1, wherein: The drainage channel (2) comprises two mirror image distribution channel side plates (21), two channel side plates (21) are fixedly provided with a channel bottom plate (22), the partition plate (7) is located at the bottom of the channel bottom plate (22), and one end of the square pipe (81) on the two sides penetrates through the two channel side plates (21).

6. The air distribution system for a V-type filter tank according to claim 5, wherein: The bottom end of each channel side plate (21) is provided with a rectangular opening (23) for water flow; The front side of the V-shaped filter tank (1) is provided with a water pipe (5), one end of the water pipe (5) extends into the space between the two channel side plates (21), and the water pipe (5) is used for discharging filtered clean water and sending water to the space between the two channel side plates (21) to realize water backwashing.

7. The air distribution system for a V-type filter tank according to claim 6, characterized in that: One end of the water pipe (5) is in communication with a water pump, and one end of the air pipe (6) is in communication with an air pump.

8. The air distribution system for a V-type filter tank according to claim 1, wherein: A plurality of filter heads (4) are arranged on each filter plate (3) at equal intervals, the filter head (4) is composed of a filter cap and a filter rod, the filter cap is located at the top of the filter plate (3), and the filter rod penetrates through the filter plate (3).

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