Integrated full-automatic rotating disc type filter

Abstract

An integrated full-automatic rotating disc type filter comprises a filter box and a plurality of vertical fiber filter cloth filter discs rotationally arranged in the filter box, the centers of the fiber filter cloth filter discs are fixedly communicated with a horizontal rotating cylinder, the two ends of the rotating cylinder are rotationally supported in the filter box, the rotating cylinder is driven by a driving device at the top of the filter box to rotate, one end of the rotating cylinder is closed, and the other end of the rotating cylinder is closed. A water inlet is formed in one side of the top of the filter box, and an emptying opening is formed in the bottom of the filter box. According to the utility model, all suspended matters are not required to pass through the filter cloth, and a part of suspended matters are statically settled, so that the load of the filter cloth can be effectively reduced, therefore, the filter period is long, the cleaning interval is long, and the bearable hydraulic load and sludge load are far greater than those of a conventional filter, so that the suspended matter load is higher than that of the conventional filter; the filtering speed is higher than that of a conventional filter tank, and the filter tank is more resistant to impact of high suspended matter concentration and large-particle suspended matter.

Description

Technical Field

[0001] The utility model relates to sewage treatment equipment, in particular to an integrated full-automatic rotary disc filter. Background Art

[0002] The purpose of using a rotary disc filter in wastewater treatment is to remove fine suspended matter in wastewater, especially to remove some fine suspended particles and colloidal matter that cannot be removed by biochemical treatment and coagulation sedimentation. It is currently widely used as a tertiary treatment method, such as further treatment of secondary treatment effluent, further purification of surface water (such as cooling water in steel mills and power plants), and the effluent from primary B to primary A, and reuse of reclaimed water.

[0003] Utility model patent CN217139589U discloses a fiber rotary disc filter, including a filter box, a water inlet pipe is fixedly installed on one side wall of the filter box, a first connection block is fixedly installed on the end of the water inlet pipe away from the filter box, a plurality of first positioning holes are sequentially opened on the first connection block, a filter box is provided on one side of the filter box, a connecting water pipe is fixedly installed on one side wall of the filter box, and a second connection block is fixedly installed on the end of the connecting water pipe away from the filter box. All suspended matter in the fiber rotary disc filter must pass through the filter material, so the filtration cycle is short, the cleaning interval is short, and the hydraulic load and sludge load that can be tolerated are also small, and there is a large room for improvement. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide an integrated fully automatic rotary disc filter.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is: an integrated fully automatic rotary disc filter, comprising a filter box and a plurality of vertical fiber filter cloth filter discs rotatably arranged in the filter box, the center of the fiber filter cloth filter disc is fixedly connected with the horizontal rotating cylinder, the two ends of the rotating cylinder are rotatably supported in the filter box, and the rotating cylinder is driven to rotate by a driving device on the top of the filter box, one end of the rotating cylinder is sealed, and the other end passes through the side wall of the filter box and is connected with the clean water tank outside the filter box, a water inlet is arranged on one side of the top of the filter box, and an emptying port is arranged at the bottom of the filter box.

[0006] Furthermore, each surface of the fiber filter cloth filter disc is respectively provided with a suction device which is in close contact with the fiber filter cloth filter disc, the suction device includes a suction nozzle and a suction pipe, each suction nozzle is rectangular, and the long strip opening of the suction nozzle touches the fiber filter cloth on the surface of the fiber filter cloth filter disc, and each suction nozzle is connected to the mud discharge electric valve through the suction pipe.

[0007] Furthermore, each surface of the fiber filter cloth filter disc is provided with an air blowing pipe closely attached to the fiber filter cloth filter disc, each air blowing pipe is connected to an air blowing main pipe, the upper end of the air blowing main pipe is fixed on the top of the filter box, and is connected to an external air supply device.

[0008] Furthermore, the bottom of the filter box is a cone bucket structure and is provided with a plurality of mud suction pipes, and the mud suction pipes are connected to the external air suction equipment through an electric valve.

[0009] Furthermore, one sealed end of the rotating drum is rotatably supported on a turntable support frame in the filter box through a bearing, and the other end of the rotating drum penetrates the filter box and the supporting rollers at the side wall of the clean water tank, and a sealing ring structure is provided at the part where the rotating drum penetrates the clean water tank.

[0010] Furthermore, a rotating swing arm is fixed at both ends of each suction nozzle, which is rotated on a suction nozzle fixing frame in the filter box through the rotating swing arm. A torsion spring is provided at the rotating part of each rotating swing arm, one end of the torsion spring is fixed in the suction nozzle fixing frame, and the other end is close to the back of the suction nozzle, so that one side of the suction port of the suction nozzle is close to the corresponding fiber filter cloth.

[0011] Furthermore, an overflow weir with an L-shaped cross section is fixed in the filter box at the inner end of the water inlet, and a vertical partition is arranged in the clean water tank, and the partition connects the two cavities separated by the clean water tank through the space at the top.

[0012] Furthermore, a liquid level meter is arranged in the filter box, and the electric control box is located on the top side wall of the filter box.

[0013] Furthermore, the driving device is a reduction motor, and the driving gear of the reduction motor is transmission-connected to the driven gear provided on the rotating drum through a chain.

[0014] Furthermore, the bottom support of the filter box has a plurality of legs to keep the bottom of the filter box away from the ground.

[0015] Through the above settings, the utility model adopts a small water pump to negatively pressure the filtered water to achieve automatic cleaning, which occupies a small area and is simple to operate; it adopts static filtration and dynamic flushing mode, with low power consumption, and continuous filtration during backwashing; the mud pump and the suction pump can share one unit, saving costs. The utility model can realize full-automatic operation of filtration, suction, and mud discharge, without the need for workers on duty, and the filter cloth replacement rate is low, which can reduce maintenance workload; the filter plate and filter cloth are thin and easy to flush, with low power consumption and a small amount of backwash water.

[0016] The advantage of the utility model is that the filter cloth can adopt a filter cloth with a very small pore size, which can intercept tiny particles with a particle size of several microns, so the effluent water quality and effluent stability are better than traditional equipment. The utility model has the function of sludge discharge, and the sludge with large particles is directly settled in the cone bucket below the filter cloth to avoid clogging the filter cloth. Therefore, it is not necessary for all suspended matter to pass through the filter cloth. Some of them have been statically precipitated, which can effectively reduce the load of the filter cloth. Therefore, the filtration cycle is long, the cleaning interval is long, and the hydraulic load and sludge load that can be sustained are also much greater than those of conventional filter tanks, so that the suspended matter load of the utility model is higher than that of conventional filter tanks, the filtration rate is also higher than that of conventional filter tanks, and it is more resistant to the impact of high suspended matter concentrations and large suspended matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is now further described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a side view structural schematic diagram of the utility model;

[0020] Figure 3 for Figure 1 Schematic diagram of the enlarged structure of part A. DETAILED DESCRIPTION

[0021] like Figure 1-3 As shown, an integrated fully automatic rotary disc filter comprises a filter box 1 and a plurality of vertical fiber filter cloth filter discs 2 rotatably arranged in the filter box 1. The bottom support of the filter box 1 has a plurality of legs 23, so that the bottom of the filter box 1 is away from the ground. The center of the fiber filter cloth filter disc 2 is fixedly connected with a horizontal rotating cylinder 3. Both ends of the rotating cylinder 3 are rotatably supported in the filter box 1. One closed end of the rotating cylinder 3 is rotatably supported on a rotary disc support frame 14 in the filter box 1 through a bearing. The other end of the rotating cylinder 3 passes through the support at the side wall of the filter box 1 and the clean water tank 4. The roller 15, and the sealing ring structure 16 is set at the part where the rotating cylinder 3 passes through the clean water tank 4, the clean water tank 4 is provided with a drain port, and the rotating cylinder 3 is driven to rotate by the driving device on the top of the filter box 1, such as the driving device is a reduction motor, and the driving gear of the reduction motor is connected to the driven gear provided on the rotating cylinder 3 through a chain. One end of the rotating cylinder 3 is sealed, and the other end passes through the side wall of the filter box 1 and is connected to the clean water tank 4 outside the filter box 1. A water inlet 5 is provided on one side of the top of the filter box 1, and an emptying port 6 is provided at the bottom of the filter box 1.

[0022] Each surface of the fiber filter cloth filter disc 2 is respectively provided with a suction device that is in close contact with the fiber filter cloth filter disc 2, and the suction device includes a suction nozzle 7 and a suction pipe 8. Each suction nozzle 7 is in a rectangular shape, and the long strip opening of the suction nozzle 7 is connected to the fiber filter cloth on the surface of the fiber filter cloth filter disc 2, and each suction nozzle 7 is connected to the mud discharge electric valve 9 through the suction pipe 8; in order to make each suction nozzle 7 better contact with the fiber filter cloth, a rotating swing arm 17 is respectively fixed at both ends of each suction nozzle 7, and the suction nozzle fixing frame arranged in the filter box 1 is rotated by the rotating swing arm 17. The rotating part of each rotating swing arm 17 is respectively provided with a torsion spring 18, one end of the torsion spring 18 is fixed in the suction nozzle fixing frame, and the other end is in close contact with the back of the suction nozzle 7, that is, the elastic force of the torsion spring 18 is used to make one side of the suction port of the suction nozzle 7 close to the corresponding fiber filter cloth.

[0023] Each surface of the fiber filter cloth filter disc 2 is provided with a blowing pipe 10 which is closely attached to the fiber filter cloth filter disc 2. Each blowing pipe 10 is connected to a main blowing pipe 11. The upper end of the main blowing pipe 11 is fixed to the top of the filter box 1 and is connected to an external air supply device. The bottom of the filter box 1 is a cone bucket 12 structure and is provided with a plurality of mud suction pipes 13. The mud suction pipes 13 are connected to the external air suction equipment through an electric valve.

[0024] An overflow weir 19 with an L-shaped cross-section is fixed in the filter box 1 at the inner end of the water inlet 5, a vertical partition 20 is arranged in the clean water tank 4, the partition 20 connects the two cavities separated by the clean water tank 4 through the space at the top, a liquid level meter 21 is arranged in the filter box 1, and the electric control box 22 is located on the top side wall of the filter box 1.

[0025] Working principle of this utility model:

[0026] Static filtration: The sewage after secondary treatment enters the filter box 1, passes through the overflow weir 19 plate and enters the filter box 1. The pollutants are filtered out through the tiny holes on the filter cloth of the fiber filter cloth filter disc 2. The clean liquid passes through the fiber filter cloth filter disc 2 and the center of the rotating cylinder 3 into the clean water tank 4 on the right and is discharged through the drain port.

[0027] Dynamic cleaning: During filtration, part of the sludge is adsorbed on the outside of the filter cloth, gradually forming a sludge layer. As the sludge accumulates on the filter cloth, the filter resistance of the filter cloth increases, and the water level in the filter tank rises. The liquid level change in the filter box is detected by the liquid level meter 21. When the liquid level in the tank reaches the cleaning set value (high water level), the PLC electronic control system in the electric control box 22 starts the air washing device (that is, each air blowing pipe 10 blows out air), the back suction pump and the drive device work, the back suction electric valve opens, and the sewage is sucked in through the suction nozzle 7 and discharged from the filter box 1 through the suction pipe 8 and the mud discharge electric valve 9. When the liquid level in the tank reaches the cleaning set value (low water level), the PLC electronic control system stops blowing air through the air blowing pipe 10, and the back suction pump and the drive device stop working. This backwashing process can also be controlled by time, and the filter tank can work continuously during the backwashing process.

[0028] Intermittent sludge discharge: A cone bucket 12 is provided below the fiber filter cloth filter disc 2 in the filter box 1 to collect the sludge at the bottom of the pool. After the sludge accumulates for a period of time, the PLC electronic control system is started and the sludge discharge pump works to discharge the sludge through the sludge suction pipe 13.

[0029] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. An integrated fully automatic rotary disc filter, comprising a filter box (1) and a plurality of vertical fiber filter cloth filter discs (2) rotatably arranged in the filter box (1), characterized in that: The center of the fiber filter cloth filter disc (2) is fixedly connected to a horizontal rotating drum (3), and both ends of the rotating drum (3) are rotatably supported in the filter box (1). The rotating drum (3) is driven to rotate by a driving device on the top of the filter box (1). One end of the rotating drum (3) is sealed, and the other end penetrates the side wall of the filter box (1) and is connected to a clean water tank (4) outside the filter box (1). A water inlet (5) is provided on one side of the top of the filter box (1), and an emptying port (6) is provided at the bottom of the filter box (1).

2. The integrated fully automatic rotary disc filter according to claim 1, characterized in that: Each surface of the fiber filter cloth filter disc (2) is provided with a suction device that is in close contact with the fiber filter cloth filter disc (2), the suction device comprising a suction nozzle (7) and a suction pipe (8), each suction nozzle (7) is in a rectangular parallelepiped shape, and a long strip opening of the suction nozzle (7) is connected to the fiber filter cloth on the surface of the fiber filter cloth filter disc (2), and each suction nozzle (7) is connected to a mud discharge electric valve (9) via a suction pipe (8).

3. The integrated fully automatic rotary disc filter according to claim 1, characterized in that: Each surface of the fiber filter cloth filter disc (2) is provided with an air blowing pipe (10) which is in close contact with the fiber filter cloth filter disc (2). Each air blowing pipe (10) is connected to an air blowing main pipe (11). The upper end of the air blowing main pipe (11) is fixed to the top of the filter box (1) and is connected to an external air supply device.

4. The integrated fully automatic rotary disc filter according to claim 1, characterized in that: The bottom of the filter box (1) is a cone bucket (12) structure and is provided with a plurality of mud suction pipes (13). The mud suction pipes (13) are connected to external air suction equipment via an electric valve.

5. The integrated fully automatic rotary disc filter according to claim 1, characterized in that: One sealed end of the rotating cylinder (3) is rotatably supported on a turntable support frame (14) in the filter box (1) through a bearing, and the other end of the rotating cylinder (3) penetrates the filter box (1) and the supporting roller (15) at the side wall of the clean water tank (4), and a sealing ring structure (16) is provided at the portion of the rotating cylinder (3) penetrating the clean water tank (4).

6. The integrated fully automatic rotary disc filter according to claim 2, characterized in that: A rotating swing arm (17) is fixed at both ends of each suction nozzle (7), and is rotated on a suction nozzle fixing frame in the filter box (1) by the rotating swing arm (17). A torsion spring (18) is provided at the rotating portion of each rotating swing arm (17). One end of the torsion spring (18) is fixed in the suction nozzle fixing frame, and the other end is closely attached to the back of the suction nozzle (7), so that one side of the suction port of the suction nozzle (7) is closely attached to the corresponding fiber filter cloth.

7. The integrated fully automatic rotary disc filter according to claim 1, characterized in that: An overflow weir (19) with an L-shaped cross section is fixed in the filter box (1) at the inner end of the water inlet (5), and a vertical partition (20) is arranged in the clean water tank (4). The partition (20) connects the two cavities separated by the clean water tank (4) through the space at the top.

8. The integrated fully automatic rotary disc filter according to claim 1, characterized in that: A liquid level meter (21) is provided in the filter box (1), and the electric control box (22) is located on the top side wall of the filter box (1).

9. The integrated fully automatic rotary disc filter according to claim 1, characterized in that: The driving device is a reduction motor, and the driving gear of the reduction motor is connected to a driven gear provided on the rotating cylinder (3) through a chain.

10. The integrated fully automatic rotary disc filter according to claim 1, characterized in that: The bottom support of the filter box (1) is provided with a plurality of legs (23) so that the bottom of the filter box (1) is kept away from the ground.

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