Brush type horizontal full-automatic backwashing filter

Abstract

The utility model discloses a brush-type horizontal full-automatic backwash filter, and belongs to the field of backwash filters, the backwash filter comprises a filter cartridge and a water passing mechanism fixedly mounted on the filter cartridge, a connecting air tap is fixedly mounted on the filter cartridge, a pressure gauge is fixedly mounted on the connecting air tap, one end of the filter cartridge is in flange connection with a pollution discharge sealing cover, and the other end of the filter cartridge is in flange connection with a water passing mechanism. A blow-off pipe is fixedly installed on the blow-off sealing cover, an electric valve electrically connected with the pressure gauge is fixedly installed on the blow-off pipe, and a filter screen with the diameter smaller than the inner diameter of the filter cartridge is fixedly installed at the end, close to the blow-off sealing cover, in the filter cartridge. According to the backwashing filter, when equipment in the filter cartridge breaks down, the first control valve and the second control valve are closed, the third control valve is opened, water is directly drained through the water outlet bypass pipe, a water path is independently arranged in the whole process, flow is not interrupted in the backwashing period, the cleaning and filtering period can be adjusted, and even if the filtering equipment breaks down, circulation of the water path is not affected; shutdown maintenance is not needed, and normal production is ensured.

Description

Technical Field

[0001] This application relates to the field of backwash filter technology, specifically a brush-type horizontal fully automatic backwash filter. Background Technology

[0002] A backwash filter is a precision device that uses a filter screen to directly intercept impurities in water, thereby removing suspended solids and particulate matter, reducing turbidity, purifying water quality, and minimizing the formation of scale, algae, and corrosion, thus protecting the normal operation of other equipment in the system. During the filtration process, the fine filter screen of the backwash filter gradually accumulates dirt and impurities from the water, forming a filter impurity layer. This impurity layer accumulates on the inside of the fine filter screen, creating a pressure difference between the inside and outside of the screen. When this pressure difference reaches a preset value, the system will begin an automatic cleaning process. During cleaning, the drain valve opens, and a specific cleaning mechanism (such as suction or a rotating brush) removes or brushes away the dirt from the inner wall of the fine filter screen, which is then discharged.

[0003] In industrial and agricultural production operations, existing backwash filters are usually connected to water pipes independently through inlet and outlet. If the filter cartridge malfunctions, it will affect the flow of water and usually requires shutdown for maintenance, which will affect production.

[0004] Therefore, this application provides a brush-type horizontal fully automatic backwash filter to solve the above problems. Utility Model Content

[0005] This application provides a brush-type horizontal fully automatic backwash filter, which aims to solve the problems mentioned in the background art, such as existing backwash filters usually being independently connected to water pipes through inlet and outlet ports, and if the filter cartridge malfunctions, it will affect the flow of water, usually requiring shutdown for maintenance, thus affecting production.

[0006] To achieve the above objectives, this application provides the following technical solution: a brush-type horizontal fully automatic backwash filter, comprising a filter cylinder and a water-passing mechanism fixedly installed on the filter cylinder, wherein a connecting air nozzle is fixedly installed on the filter cylinder, and a pressure gauge is fixedly installed on the connecting air nozzle.

[0007] A drain cover is connected to a flange at one end of the filter cylinder. A drain pipe is fixedly installed on the drain cover. An electric valve electrically connected to a pressure gauge is fixedly installed on the drain pipe. A filter screen with a diameter smaller than the internal diameter of the filter cylinder is fixedly installed inside the filter cylinder near the drain cover.

[0008] The water circulation mechanism includes an inlet bypass pipe located below the filter cartridge and an outlet bypass pipe connected to the inlet bypass pipe flange. An inlet branch connected to the filter cartridge flange is fixedly installed on the inlet bypass pipe, and an outlet branch connected to the filter cartridge flange is fixedly installed on the outlet bypass pipe. A first control valve is fixedly installed on the inlet branch, a second control valve is fixedly installed on the outlet branch, and a third control valve is fixedly installed between the inlet and outlet bypass pipes. Thus, during filtration, if a malfunction occurs inside the filter cartridge, the first and second control valves are closed, and the third control valve is opened. Water is drawn through the inlet bypass pipe and drained directly through the outlet bypass pipe. The entire process features an independently configured water circuit, ensuring continuous flow during backwashing. The filtration cleaning cycle is adjustable, and even if the filtration equipment malfunctions, the water flow will not be affected, eliminating the need for maintenance shutdowns and ensuring normal production.

[0009] Preferably, for the installation of the filter screen, a support plate is fixedly installed inside the filter cylinder, located behind the water inlet branch. The filter screen is fixedly installed between the support plate and the drain cover. This is done until the filter screen abuts against the support plate, ensuring a tight seal.

[0010] Preferably, to ensure pressure safety, an exhaust valve connected to the filter cartridge is fixedly installed on the filter cartridge. The exhaust valve can be opened to release pressure from the filter cartridge, thus improving safety.

[0011] Preferably, to support the equipment, support frames are fixedly installed at the bottom of both the inlet bypass pipe and the outlet bypass pipe. This provides off-ground support for the filter cartridge, the inlet bypass pipe, and the outlet bypass pipe, ensuring stability.

[0012] Preferably, to assist in cleaning debris, the backwash filter further includes an auxiliary cleaning mechanism. This mechanism includes a head cover fixedly connected to the filter cylinder via a flange at the end furthest from the drain cover. A drive motor electrically connected to a pressure gauge is fixedly mounted on the head cover. A rotating rod, penetrating the head cover and extending into the filter cylinder, is rotatably connected to the drain cover. A stainless steel brush adapted to the inner wall of the filter screen is fixedly mounted on the rotating rod. This scrapes off stubborn stains, assisting in the rapid removal of contaminants and improving cleaning efficiency.

[0013] Preferably, for wastewater discharge, the wastewater discharge cover has a wastewater discharge port that is connected to an electric valve. Wastewater is discharged through the wastewater discharge port and then through a wastewater pipe for centralized cleaning.

[0014] In the event of a malfunction within the filter cartridge, this backwash filter closes the first and second control valves and opens the third control valve. Water is drawn in through the inlet bypass pipe and drained directly through the outlet bypass pipe. The entire process features an independently designed water circuit, ensuring continuous flow during backwashing. The cleaning cycle is adjustable, and even if the filter malfunctions, the water flow remains unaffected, eliminating the need for downtime maintenance and ensuring normal production.

[0015] When the pressure gauge detects that the internal pressure of the filter screen inside the filter cylinder is greater than the external pressure, it indicates that cleaning is required. At this time, the drive motor is started, which drives the rotating rod to rotate. The rotating rod drives the stainless steel brush to rotate. The stainless steel brush scrapes and cleans the inner wall of the filter screen with its bristles, thereby scraping off stubborn stains, assisting in the rapid removal of pollutants and improving cleaning efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front structure of a brush-type horizontal fully automatic backwashing filter;

[0017] Figure 2 This is a schematic diagram of the back structure of a brush-type horizontal fully automatic backwash filter;

[0018] Figure 3 This is a cross-sectional structural diagram of a brush-type horizontal fully automatic backwashing filter.

[0019] In the picture:

[0020] 1. Filter cartridge; 11. Connecting air nozzle; 12. Pressure gauge; 13. Drain cover; 14. Drain pipe; 15. Electric valve; 16. Filter screen; 17. Support plate; 18. Air vent valve; 2. Water supply mechanism; 21. Inlet bypass pipe; 22. Outlet bypass pipe; 23. Inlet branch; 24. Outlet branch; 25. First control valve; 26. Second control valve; 27. Third control valve; 28. Support frame; 3. Auxiliary cleaning mechanism; 31. Drive motor; 32. Rotating rod; 33. Stainless steel brush; 34. Drain outlet; 35. End cap. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Example 1

[0023] This embodiment provides a brush-type horizontal fully automatic backwashing filter, such as... Figure 1-3As shown, the backwash filter includes a filter cartridge 1 and a water supply mechanism 2 fixedly installed on the filter cartridge 1. A connecting air nozzle 11 is fixedly installed on the filter cartridge 1, and a pressure gauge 12 is fixedly installed on the connecting air nozzle 11.

[0024] A drain cover 13 is connected to one end of the filter cylinder 1 via a flange. A drain pipe 14 is fixedly installed on the drain cover 13. An electric valve 15, which is electrically connected to a pressure gauge 12, is fixedly installed on the drain pipe 14. A filter screen 16 with a diameter smaller than the internal diameter of the filter cylinder 1 is fixedly installed inside the filter cylinder 1 at the end near the drain cover 13.

[0025] The water supply mechanism 2 includes an inlet bypass pipe 21 located below the filter cylinder 1 and an outlet bypass pipe 22 connected to the flange of the inlet bypass pipe 21. An inlet branch 23 connected to the flange of the filter cylinder 1 is fixedly installed on the inlet bypass pipe 21. An outlet branch 24 connected to the flange of the filter cylinder 1 is fixedly installed on the outlet bypass pipe 22. A first control valve 25 is fixedly installed on the inlet branch 23. A second control valve 26 is fixedly installed on the outlet branch 24. A third control valve 27 is fixedly installed between the inlet bypass pipe 21 and the outlet bypass pipe 22.

[0026] When in use, close the electric valve 15, close the drain pipe 14, close the third control valve 27, open the first control valve 25 and the second control valve 26, draw water from the end of the inlet bypass pipe 21, the water flow is blocked by the third control valve 27, the water flow enters the filter cylinder 1 through the inlet branch 23, is filtered by the filter screen 16, and is discharged through the outlet branch 24 into the outlet bypass pipe 22.

[0027] Pressure gauge 12 detects the internal pressure of the pipeline. When the preset value is reached, electric valve 15 is opened, drain pipe 14 is opened, outlet bypass pipe 22 and first control valve 25 are closed, and third control valve 27 is opened. Water flows in from inlet bypass pipe 21 and then enters filter cartridge 1 through outlet branch 24. The filter screen 16 is flushed from the outside, thereby washing down the debris inside the filter screen 16 and discharging it through drain pipe 14. Pressure gauge 12 detects pressure changes. When the preset value is reached, drain pipe 14 is automatically closed, outlet bypass pipe 22 and first control valve 25 are opened, and third control valve 27 is closed, so that the water flow can be filtered normally again.

[0028] When a malfunction occurs in the equipment inside filter cartridge 1, the first control valve 25 and the second control valve 26 are closed, and the third control valve 27 is opened. Water is drawn in through the end of the inlet bypass pipe 21 and drained directly through the outlet bypass pipe 22. The entire process has an independently set water circuit, ensuring continuous flow during backwashing. The cleaning cycle of the filter can be adjusted, and even if the filter equipment malfunctions, the water flow will not be affected, eliminating the need for maintenance shutdowns and ensuring normal production.

[0029] Specifically, a support plate 17 is fixedly installed inside the filter cylinder 1, located behind the water inlet branch 23. The filter screen 16 is fixedly installed between the support plate 17 and the drain cover 13. In use, open the drain cover 13 and insert the filter screen 16 into the filter cylinder 1 from one end until the filter screen 16 abuts against the support plate 17, ensuring a tight seal.

[0030] More specifically, an exhaust valve 18 is fixedly installed on the filter cartridge 1 and is connected to the filter cartridge 1. During use, the pressure gauge 12 detects the gas changes inside the filter cartridge 1. When the gas pressure changes too much, the exhaust valve 18 can be opened to release the pressure in the filter cartridge 1, thereby improving safety.

[0031] Furthermore, support frames 28 are fixedly installed at the bottom of both the inlet bypass pipe 21 and the outlet bypass pipe 22. In use, the support frames 28 are welded to the bottom of the inlet bypass pipe 21 and the outlet bypass pipe 22 to provide ground-level support for the filter cartridge 1, the inlet bypass pipe 21, and the outlet bypass pipe 22, ensuring stability.

[0032] Example 2

[0033] Unlike Embodiment 1, when cleaning water debris, some dirt accumulates and adheres to the inner wall of the filter screen 16, making it difficult to remove by backwashing. Therefore, the backwash filter also includes an auxiliary cleaning mechanism 3. The auxiliary cleaning mechanism 3 includes a head cover 35 fixedly connected to the filter cylinder 1 at the end away from the drain cover 13 via a flange. A drive motor 31 electrically connected to the pressure gauge 12 is fixedly installed on the head cover 35. A rotating rod 32 is fixedly installed on the output end of the drive motor 31, penetrating the head cover 35 and extending into the filter cylinder 1, and rotatably connected to the drain cover 13. A stainless steel brush 33 adapted to the inner wall of the filter screen 16 is fixedly installed on the rotating rod 32. When in use, when the pressure gauge 12 detects that the internal pressure of the filter screen 16 in the filter cylinder 1 is greater than the external pressure, it indicates that cleaning is required. At this time, the drive motor 31 is started, which drives the rotating rod 32 to rotate. The rotating rod 32 drives the stainless steel brush 33 to rotate. The stainless steel brush 33 scrapes and cleans the inner wall of the filter screen 16 with its bristles, thereby scraping off stubborn stains, assisting in the rapid cleaning of pollutants and improving cleaning efficiency.

[0034] Specifically, the drain cover 13 has a drain port 34 connected to the electric valve 15. In use, after backwashing and cleaning with the stainless steel brush 33, the sewage is discharged through the drain port 34 and the drain pipe 14 for centralized cleaning.

[0035] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A brush-type horizontal fully automatic backwash filter, comprising a filter cylinder (1) and a water-passing mechanism (2) fixedly installed on the filter cylinder (1), wherein a connecting air nozzle (11) is fixedly installed on the filter cylinder (1), and a pressure gauge (12) is fixedly installed on the connecting air nozzle (11), characterized in that: One end flange of the filter cylinder (1) is connected to a drain cover (13), a drain pipe (14) is fixedly installed on the drain cover (13), an electric valve (15) electrically connected to a pressure gauge (12) is fixedly installed on the drain pipe (14), and a filter screen (16) with a diameter smaller than the internal diameter of the filter cylinder (1) is fixedly installed inside the filter cylinder (1) near the drain cover (13). The water supply mechanism (2) includes an inlet bypass pipe (21) located below the filter cylinder (1) and an outlet bypass pipe (22) connected to the flange of the inlet bypass pipe (21). An inlet branch (23) connected to the flange of the filter cylinder (1) is fixedly installed on the inlet bypass pipe (21). An outlet branch (24) connected to the flange of the filter cylinder (1) is fixedly installed on the outlet bypass pipe (22). A first control valve (25) is fixedly installed on the inlet branch (23). A second control valve (26) is fixedly installed on the outlet branch (24). A third control valve (27) is fixedly installed between the inlet bypass pipe (21) and the outlet bypass pipe (22).

2. The brush-type horizontal fully automatic backwash filter according to claim 1, characterized in that: The filter cylinder (1) is fixedly installed with a support plate (17) located behind the water inlet branch (23), and the filter screen (16) is fixedly installed between the support plate (17) and the drain cover (13).

3. The brush-type horizontal fully automatic backwash filter according to claim 1, characterized in that: An exhaust valve (18) connected to the filter cylinder (1) is fixedly installed on the filter cylinder (1).

4. A brush-type horizontal fully automatic backwash filter according to claim 1, characterized in that: Both the inlet bypass pipe (21) and the outlet bypass pipe (22) are fixedly installed with support frames (28).

5. A brush-type horizontal fully automatic backwash filter according to claim 1, characterized in that: The backwash filter also includes an auxiliary cleaning mechanism (3), which includes a head cover (35) fixedly connected to the filter cylinder (1) at the end away from the drain cover (13) via a flange. A drive motor (31) electrically connected to a pressure gauge (12) is fixedly installed on the head cover (35). A rotating rod (32) extending through the head cover (35) into the filter cylinder (1) and rotatably connected to the drain cover (13) is fixedly installed on the output end of the drive motor (31). A stainless steel brush (33) adapted to the inner wall of the filter screen (16) is fixedly installed on the rotating rod (32).

6. A brush-type horizontal fully automatic backwash filter according to claim 5, characterized in that: The drain cover (13) is provided with a drain port (34) that is connected to the electric valve (15).

Images