Automatic drainage precision filter

Abstract

This utility model relates to the field of drainage filter technology and discloses an automatic drainage precision filter, comprising: a water inlet tank, an inlet pipe connected to one outer wall of the upper end of the water inlet tank, a sewage pump connected to the other outer wall of the lower end of the water inlet tank via a flange, a filter cartridge connected to the lower outer wall of the drainage tank, a filter element fixed inside the filter cartridge, a filter groove formed on the upper outer wall of the filter element, the filter groove filled with a composite cotton mesh filter plate, and a drainage hole formed on the lower outer wall of the filter element. This automatic drainage precision filter is equipped with a backwash pipe. It is used to backwash and clean the filter cartridge portion of the filter. By rotating the sealing plate to close the drainage chamber, clean water is injected into the backwash pipe, causing this clean water to flush impurities on the composite cotton mesh filter plate back into the water inlet tank, and then pumped out of the water inlet tank by the sewage pump. This allows for repeated use of the filter without disassembling it.

Description

Technical Field

[0001] This utility model relates to the field of drainage filter technology, specifically an automatic drainage precision filter. Background Technology

[0002] A drainage filter is a device used to filter impurities from sewage, primarily to prevent pipe blockage and protect the environment. Drainage filters play a vital role in ensuring the normal operation of drainage systems and environmental protection. They can intercept harmful substances such as floating garbage, silt, and oil, prevent urban flooding, reduce pollution of surrounding water bodies, and provide a safer and more hygienic living environment for cities.

[0003] Upon investigation, a precision filter with differential pressure indication and automatic drainage function was found, with publication number CN216023775U. This filter includes a differential pressure gauge, a manual drain valve, and a float-type automatic drain valve. It is used to solve the problem that the filter effect will be greatly affected if the filter element is not replaced or the oil and water in the device is not drained in time. However, the filter mechanism in this application requires the entire filter to be disassembled and reassembled when replacing it, which is inconvenient to use and cannot be easily cleaned to quickly restore the filtration function. Therefore, we propose an automatic drainage precision filter. Utility Model Content

[0004] The purpose of this invention is to provide an automatic drainage precision filter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic drainage precision filter, comprising:

[0006] The water inlet tank has an inlet pipe connected to one side of its upper outer wall, and a sewage pump connected to the other side of its lower outer wall via a flange. The lower outer wall of the drain tank has a filter cartridge connected to it, and a filter element is fixed inside the filter cartridge. A filter groove is formed on the upper outer wall of the filter element, and the filter groove is filled with a composite cotton mesh filter plate. A drain hole is formed on the lower outer wall of the filter element, and the drain hole extends to the lower end of the filter groove. The lower end of the filter cartridge is connected to the drain tank, and a connecting pipe is connected to the connection between the drain tank and the filter cartridge.

[0007] A drainage chamber is formed inside the drainage tank. A first motor is bolted to both outer walls of the drainage tank. The output shaft of the first motor is connected to a sealing plate, and the sealing plate passes through the drainage chamber near the connecting pipe via a sealed bearing. Backflush pipes are connected to both outer walls of the upper end of the drainage chamber and extend through both outer walls of the drainage tank. A bracket is fixed to the lower end of the drainage tank.

[0008] Furthermore, the water inlet pipe is connected to the filter element and filter cartridge through the water inlet tank and the filter cartridge, and the filter tank and the composite cotton mesh filter plate are symmetrically arranged about the central axis of the filter element. The filter cartridge is connected to the drain tank through the composite cotton mesh filter plate, the filter tank and the drain hole.

[0009] Furthermore, the end face structure of the drainage cavity is a Y-shaped structure, and the first motor and the sealing plate are symmetrically arranged about the central axis of the drainage cavity, and the sealing plate is rotatably connected to the drainage cavity through the output shaft of the first motor.

[0010] Furthermore, the backflush pipe is connected to the filter cartridge via the drain chamber and the connecting pipe, and the filter cartridge is connected to the sewage pump via the water inlet tank.

[0011] Furthermore, a second motor is bolted to the upper outer wall of the water inlet tank. The output shaft of the second motor is connected to a rotating rod, which passes through the interior of the water inlet tank via a bearing. A stirring arm is fixed to the outer wall of the rotating rod.

[0012] Furthermore, the stirring arm is symmetrically positioned about the central axis of the rotating rod, and the stirring arm is rotatably connected to the water inlet tank through the rotating rod and the output shaft of the second motor.

[0013] Furthermore, a first shell is bolted to one side of the outer wall of the water inlet tank and the water outlet tank, and a second shell is bolted to the other side of the outer wall of the first shell, and the second shell is bolted to the other side of the outer wall of the water inlet tank and the water outlet tank.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This automatic drainage precision filter is equipped with a backwash pipe. It is used to backwash and clean the filter cartridge section. By rotating the sealing plate to close the drainage chamber, clean water is injected into the backwash pipe. This clean water then flushes the impurities on the composite cotton mesh filter plate into the inlet tank from the reverse direction. The impurities are then pumped out of the inlet tank by the sewage pump. The filter can be reused repeatedly without disassembling it. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present invention in its combined working state;

[0017] Figure 2 This is an enlarged cross-sectional view of the filter cartridge and filter element of this utility model;

[0018] Figure 3 This is an enlarged cross-sectional view of the drainage tank of this utility model;

[0019] Figure 4This is a cross-sectional structural diagram of the water inlet tank of this utility model;

[0020] Figure 5 This is a schematic diagram of the encased structure of the water inlet tank of this utility model.

[0021] Figure 6 This is a schematic diagram of the combined structure of the first and second shells of this utility model.

[0022] In the diagram: 1. Water inlet tank; 2. Water inlet pipe; 3. Sewage pump; 4. Filter cartridge; 5. Filter element; 6. Filter tank; 7. Composite cotton mesh filter plate; 8. Drain hole; 9. Drain tank; 10. Connecting pipe; 11. Drain chamber; 12. First motor; 13. Sealing plate; 14. Backflush pipe; 15. Support; 16. Second motor; 17. Rotating rod; 18. Stirring arm; 19. First casing; 20. Second casing. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides an improved automatic drainage precision filter. Please refer to [link / reference]. Figures 1-3The system includes: a water inlet tank 1, with an inlet pipe 2 connected to one outer wall of the upper end of the water inlet tank 1, and a sewage pump 3 connected to the other outer wall of the lower end of the water inlet tank 1 via a flange; a filter cartridge 4 connected to the lower outer wall of the drain tank 9, and the filter cartridge 4 being connected to the sewage pump 3 via the water inlet tank 1; the inlet pipe 2 being connected to the filter cartridge 4 via the water inlet tank 1 and the filter element 5; a filter element 5 fixed inside the filter cartridge 4; a filter groove 6 being formed on the upper outer wall of the filter element 5; and a composite cotton mesh filter plate 7 being filled inside the filter groove 6. The filter groove 6 and the composite cotton mesh filter plate 7 are positioned relative to the filter element 5. The filter cartridge 5 is symmetrically positioned along its central axis. A drain hole 8 is provided on the lower outer wall of the filter cartridge 5, extending to the lower end of the filter tank 6. A drain box 9 is connected to the lower end of the filter cartridge 4. The filter cartridge 4 is connected to the drain box 9 via a composite cotton mesh filter plate 7, the filter tank 6, and the drain hole 8. The filter cartridge 4 precisely filters the water flowing into the inlet tank 1 through the circumferential filter tank 6 and the composite cotton mesh filter plate 7, improving the cleanliness of the filtered water. A connecting pipe 10 connects the drain box 9 to the filter cartridge 4. The drain box 9 has an internal Y-shaped end face structure. The drainage chamber 11 is shaped like the Chinese character "11". A first motor 12 is bolted to both outer walls of the drainage tank 9. The output shaft of the first motor 12 is connected to a sealing plate 13. The first motor 12 and the sealing plate 13 are symmetrically positioned about the central axis of the drainage chamber 11. The sealing plate 13 is rotatably connected to the drainage chamber 11 via the output shaft of the first motor 12. Backflush pipes 14 are connected to both outer walls of the upper end of the drainage chamber 11, extending through both outer walls of the drainage tank 9. The backflush pipes 14 are connected to the filter cartridge 4 via the drainage chamber 11 and the connecting pipe 10. The backwash pipe 14 is used to backwash and clean the filter cartridge 4 in the filter. The drain chamber 11 is closed by rotating the sealing plate 13, and clean water is injected into the backwash pipe 14. This clean water flushes the impurities on the composite cotton mesh filter plate 7 into the water inlet tank 1 from the reverse direction, and is pumped out of the water inlet tank 1 by the sewage pump 3, so that the filter can be reused repeatedly. The lower end of the drain tank 9 is fixed with a bracket 15. The bracket 15 is used to stabilize the filter and prevent the filter from shaking during operation. By raising the filter, it is easy to discharge the filtered water output from the drain tank 9.

[0025] Please see Figure 1 and Figure 4An automatic drainage precision filter includes: a second motor 16 bolted to the upper outer wall of an inlet tank 1; a rotating rod 17 connected to the output shaft of the second motor 16; the rotating rod 17 passing through the interior of the inlet tank 1 via bearings; a stirring arm 18 fixed to the outer wall of the rotating rod 17; the stirring arm 18 symmetrically positioned about the central axis of the rotating rod 17; and the stirring arm 18 rotatably connected to the inlet tank 1 via the rotating rod 17 and the output shaft of the second motor 16. Driven by the output shaft of the second motor 16, the rotating rod 17 and the stirring arm 18 rotate inside the inlet tank 1, causing the water to be filtered and discharged to form a downward-moving vortex, assisting the water in flowing into the filter cartridge 4. Furthermore, the stirring arm 18 can collect and entangle larger flexible substances in the water by rotating, preventing these large impurities from accumulating at the upper end of the filter cartridge 4 and clogging the gap between the filter element 5 and the filter cartridge 4, thus affecting the filtration effect.

[0026] Please see Figures 5-6 An automatic drainage precision filter includes: a first casing 19 bolted to one side of the outer wall of the inlet tank 1 and the outlet tank 9; a second casing 20 bolted to the other side of the outer wall of the first casing 19; and the second casing 20 bolted to the other side of the outer wall of the inlet tank 1 and the outlet tank 9. The first casing 19 and the second casing 20 serve to surround and protect the filter, thereby improving the structural strength and durability of the filter.

[0027] Working Principle: For this type of automatic drainage precision filter, the operator first places the filter on a stable, level working surface using a bracket 15 to prevent it from shaking and affecting operational stability. Then, water to be filtered is introduced into the inlet tank 1 through the inlet pipe 2. In the inlet tank 1, the stirring arm 18 and rotating rod 17 rotate under the drive of the output shaft of the second motor 16, entangled and collecting larger, flexible impurities in the water, preventing these impurities from clogging the gaps between the filter cartridge 4 and the filter element 5. The water then enters the filter tank 6 through the gaps between the filter cartridge 4 and the filter element 5. Passing through the composite cotton mesh filter plate 7, the water undergoes precise filtration through the composite PP surface and the fine mesh, resulting in clean water that drains away. Hole 8 and connecting pipe 10 are discharged into drainage tank 9. This part of clean water flows out from the lower end of drainage tank 9 through the open drainage chamber 11 by adjusting the sealing plate 13 through the first motor 12. Finally, when the filtration effect decreases, there is no need to disassemble the filter. Just adjust the first motor 12 and sealing plate 13 so that the sealing plate 13 seals the upper end of the drainage chamber 11, and inject clean rinsing water through backwash pipe 14. This part of water will spray upward and flush the impurities adhering to the composite cotton mesh filter plate 7 into the inlet tank 1. The impurities will be pumped out of the inlet tank 1 by the sewage pump 3, maintaining the filtration effect of the composite cotton mesh filter plate 7 and improving its applicability. At the same time, the first shell 19 and the second shell 20 are used to surround and protect the filter.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic drain precision filter characterized by, include: Water inlet tank (1), water inlet pipe (2) is connected to the outer wall of the upper end of the water inlet tank (1), sewage pump (3) is connected to the outer wall of the lower end of the water inlet tank (1) through a flange, filter cylinder (4) is connected to the outer wall of the lower end of the water inlet tank (1), filter element (5) is fixed inside the filter cylinder (4), filter groove (6) is opened on the outer wall of the upper end of the filter element (5), composite cotton mesh filter plate (7) is filled inside the filter groove (6), drain hole (8) is opened on the outer wall of the lower end of the filter element (5), and the drain hole (8) extends to the lower end of the filter groove (6), drain tank (9) is connected to the lower end of the filter cylinder (4), and connecting pipe (10) is connected to the connection between the drain tank (9) and the filter cylinder (4). A drainage chamber (11) is located inside the drainage tank (9). A first motor (12) is bolted to both outer walls of the drainage tank (9). The output shaft of the first motor (12) is connected to a sealing plate (13). The sealing plate (13) passes through the drainage chamber (11) near the connecting pipe (10) through a sealed bearing. A backflushing pipe (14) is connected to both outer walls of the upper end of the drainage chamber (11). The backflushing pipe (14) extends through both outer walls of the drainage tank (9). A bracket (15) is fixed to the lower end of the drainage tank (9).

2. The automatic drainage precision filter according to claim 1, characterized in that: The water inlet pipe (2) is connected to the filter cylinder (4) through the water inlet tank (1) and the filter element (5). The filter tank (6) and the composite cotton mesh filter plate (7) are symmetrically arranged about the central axis of the filter element (5). The filter cylinder (4) is connected to the drain tank (9) through the composite cotton mesh filter plate (7), the filter tank (6) and the drain hole (8).

3. The automatic drainage precision filter according to claim 1, characterized in that: The end face structure of the drainage cavity (11) is Y-shaped, and the first motor (12) and the sealing plate (13) are symmetrically arranged about the central axis of the drainage cavity (11). The sealing plate (13) is rotatably connected to the drainage cavity (11) through the output shaft of the first motor (12).

4. The automatic drainage precision filter according to claim 1, characterized in that: The backflush pipe (14) is connected to the filter cartridge (4) through the drain chamber (11) and the connecting pipe (10), and the filter cartridge (4) is connected to the sewage pump (3) through the water inlet tank (1).

5. The automatic drainage precision filter according to claim 1, characterized in that: The upper outer wall of the water inlet tank (1) is bolted with a second motor (16), the output shaft of the second motor (16) is connected to a rotating rod (17), and the rotating rod (17) passes through the inside of the water inlet tank (1) through a bearing. The outer wall of the rotating rod (17) is fixed with a stirring arm (18).

6. The automatic drainage precision filter according to claim 5, characterized in that: The stirring arm (18) is symmetrically positioned about the central axis of the rotating rod (17), and the stirring arm (18) is rotatably connected to the water tank (1) through the rotating rod (17) and the output shaft of the second motor (16).

7. The automatic drainage precision filter according to claim 1, characterized in that: The water inlet tank (1) and the drain tank (9) are respectively attached to one side of the outer wall by bolts. The other side of the outer wall of the first shell (19) is connected to the second shell (20) by bolts. The second shell (20) is fixed to the other side of the outer wall of the water inlet tank (1) and the drain tank (9) by bolts.

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