Anti-blocking device of sewage treatment filter screen

Abstract

The utility model discloses an anti-blocking device of a sewage treatment filter screen, which is characterized in that a filter component is arranged on a partition plate of a sewage treatment tank, the filter component comprises a mounting frame and a filter screen cylinder arranged in the mounting frame, bristles are arranged on the mounting frame, and blades and a rotating shaft are arranged on the filter screen cylinder. The filter screen blocking prevention device has the advantages that the structure is simple, the number of mechanical links is small, the fault probability is low, energy consumption is not needed, and the maintenance and the use are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to an anti-clogging device for a sewage treatment filter screen. Background Art

[0002] The treatment of sewage requires the removal of large particles, suspended matter, etc. in the sewage to reduce the load on subsequent treatment units. However, when filtering large particles and suspended matter, the filter screen is easily clogged, which affects the sewage treatment efficiency. In order to clean the clogged matter on the filter screen, the sewage treatment must be stopped and the filter screen must be cleaned and flushed, which is labor-intensive and time-consuming. In the prior art, there are also anti-clogging devices for the filter screen.

[0003] CN220565179U discloses an anti-clogging device for underwater channels and filters used in tidal power generation. The device comprises a housing, a fan-shaped gear rotatably mounted on the outer side of a fixed shaft, a hollow gear movably mounted on the side opposite the three positioning gears, a limiting groove formed on the front of the hollow gear, a cleaning mechanism movably mounted on the outer side of the connecting shaft, a driving shaft fixedly connected to the inner side of the driving gear, a cross bracket fixedly connected to the outer side of the driving shaft, a mud-clearing plate fixedly connected to the front of the cross bracket, and a small fan blade fixedly connected to the outer end of the driving shaft away from the driving gear. The device controls the opening and closing of the cleaning mechanism, which is equipped with a rubber brush that contacts the protective grille. It uses a large number of components and has a complex structure. If any of these links fails, the device may lose its function. The more components, the higher the cost of the device, and the greater the probability of failure, which increases the difficulty of maintenance.

[0004] In order to solve the technical problems existing in the prior art, a filter anti-clogging device with a simple structure and easy maintenance is needed. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide an anti-clogging device for a sewage treatment filter screen in view of the deficiencies in the above-mentioned prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: an anti-clogging device for a sewage treatment filter net, comprising a sewage treatment tank, which is divided into a first sub-tank and a second sub-tank by a partition plate, and the partition plate is provided with a mounting hole, in which a filter assembly is installed, and the sewage flows from the first sub-tank into the second sub-tank through the filter assembly.

[0007] The filter assembly comprises a mounting frame and a filter screen cartridge arranged in the mounting frame. The top wall and the bottom wall inside the mounting frame are fixedly connected with first bristles, and both side walls inside the mounting frame are provided with bearings.

[0008] Both ends of the filter screen cylinder are fixedly connected with the filter screen cylinder end cover, and the filter screen cylinder end cover is penetrated by the end cover shaft, and the blade is fixedly connected on the circumferential surface of the end cover shaft inside the filter screen cylinder. The end cover shaft outside the filter screen cylinder is connected to the bearing on the inside of the mounting frame, and the filter screen cylinder is rotatably connected to the mounting frame through the bearing.

[0009] An anti-clogging device for a sewage treatment filter screen includes a sewage treatment tank, which is divided into a first sub-tank and a second sub-tank by a partition plate. The partition plate is provided with a mounting hole, in which a filter assembly is mounted. Sewage flows from the first sub-tank into the second sub-tank via the filter assembly.

[0010] The filter assembly includes a mounting frame and a filter screen cartridge disposed in the mounting frame, wherein the top wall and the bottom wall inside the mounting frame are fixedly connected to first bristles, and both side walls inside the mounting frame are provided with bearings;

[0011] Both ends of the filter cylinder are fixedly connected to the filter cylinder end caps, and the filter cylinder end caps are penetrated by the end cap rotating shafts. The circumferential surface of the end cap rotating shaft located inside the filter cylinder is fixedly connected to the blades, and the end cap rotating shaft located outside the filter cylinder is connected to the bearing inside the mounting frame. The filter cylinder is rotatably connected to the mounting frame through the bearings.

[0012] When sewage flows through the filter screen, it pushes the blades to drive the filter screen to rotate, and the first brush bristles are in contact and sliding connection with the outer circumference of the filter screen to brush off the blockages attached thereto.

[0013] Preferably, each end cover shaft is provided with at least one blade, which is an arc-shaped plate; if there are multiple blades, all blades are radially distributed with the end cover shaft as the center, and all blades have the same bending direction, all facing the first sub-pool.

[0014] By utilizing the water level difference between the first sub-tank and the second sub-tank and the curved blades with the same direction, a larger thrust is obtained, and no external energy is needed to rotate the filter drum.

[0015] Preferably, rotary holes are provided on both the top wall and the bottom wall of the mounting hole, and the two rotary holes are coaxially arranged.

[0016] The top and bottom surfaces of the mounting frame are both provided with mounting frame rotating shafts. One end of each mounting frame rotating shaft away from the mounting frame is inserted into the corresponding rotating hole. The mounting frame is rotatably connected to the partition plate through the mounting frame rotating shaft and the rotating hole.

[0017] The mounting frame can be rotated to facilitate the cleaning of large particles and suspended matter remaining in the gap between the filter cylinder and the mounting frame.

[0018] Preferably, a water inlet and a sewage outlet are provided on the side wall of the first sub-tank, and a water pumping port is provided on the side wall of the second sub-tank. Relative to the bottom of the tank, the water inlet is arranged at a higher position than the sewage outlet and the water pumping port.

[0019] Preferably, the filter assembly is fixedly connected to a brush rod on one side of the mounting frame located at the first sub-pool, the length direction of the brush rod is consistent with the axial direction of the filter cylinder, and the brush rod is provided with second bristles, which are in contact with the outer circumferential surface of the filter cylinder.

[0020] By fixing a brush rod on one side of the installation frame located at the first sub-tank, the frequency of cleaning large particles and suspended matter remaining in the gap between the filter screen cylinder and the installation frame is reduced.

[0021] Preferably, an inclined brush rod is fixedly connected to the side of the mounting frame located in the first sub-pool, and the length direction of the inclined brush rod forms an angle with the axial direction of the filter cylinder. A third bristle is provided on the inclined brush rod, and the third bristle is in contact with the outer circumferential surface of the filter cylinder.

[0022] By setting an inclined brush rod, the probability of large particles and suspended matter being inserted into the filter mesh is reduced compared to a parallel brush rod, and the effect of preventing the filter from being blocked is better.

[0023] The utility model adopts the above technical solution, which can bring the following beneficial effects:

[0024] 1. Compared with the existing technology, it does not use too many components. Only blades and rotating shafts are set on the filter cylinder. With the help of the hydraulic force of sewage flow, the blockages attached to the filter cylinder are rotated and washed away, thereby preventing the filter from being blocked.

[0025] 2. The device has a simple structure, few mechanical links, low failure probability, does not require energy consumption, and is easy to maintain and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0027] Figure 2 Schematic diagram of the assembly of the separator plate and its filter assembly;

[0028] Figure 3 The exploded view of the separator plate and its filter assembly;

[0029] Figure 4 Schematic diagram of filter assembly assembly;

[0030] Figure 5 This is an exploded view of the filter assembly;

[0031] Figure 6 This is the exploded view of the filter cylinder;

[0032] Figure 7 This is a schematic diagram of the filter cylinder end cover;

[0033] Figure 8This is a schematic diagram of the filter assembly assembly of Example 2;

[0034] Figure 9 This is a schematic diagram of the filter assembly assembly of Example 3.

[0035] In the figure: 100, sewage treatment tank; 101, water inlet; 102, sewage outlet; 103, water suction port; 104, partition plate; 105, mounting hole; 106, first sub-tank; 107, second sub-tank; 108, rotating hole; 200, filter assembly; 210, mounting frame; 211, first bristles; 212, mounting frame shaft; 213, bristle rod; 214, second bristles; 215, inclined brush rod; 216, third bristles; 220, filter cylinder; 221, filter cylinder end cover; 222, blades; 223, end cover shaft. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1:

[0037] See also Figure 1 In this embodiment, the anti-clogging device of the sewage treatment filter is applied to the sewage treatment pool 100. The sewage treatment pool 100 can be open or covered according to actual needs. In this embodiment, it is an open type. The sewage treatment pool 100 is provided with a water inlet 101 for inputting sewage into the sewage treatment pool 100. The sewage treatment pool 100 is divided into two by a partition plate 104. The partition plate 104 is provided with a filter assembly 200. The sewage treatment pool 100 is located near the water inlet 101. The first sub-tank 106 of the untreated sewage is located; the sewage flows into the second sub-tank 106 on the other side of the partition plate 104 after being filtered by the filter assembly 200. The sub-tank 107 intercepts large particles and suspended matter in the sewage in the first sub-tank 106. A sewage outlet 102 is provided on the side wall of the first sub-tank 106 for discharging large particles and suspended matter. The sewage outlet 102 is installed with a valve and a pipe (the valve and the pipe are not shown in the figure). When large particles and suspended matter need to be discharged, the valve is opened; a water pumping port 103 is provided on the side wall of the second sub-tank 107 for discharging pretreated sewage. The water pumping port 103 is also installed with a valve and a pipe (the valve and the pipe are not shown in the figure). When pretreated sewage needs to be discharged, the valve is opened to discharge the pretreated sewage and send it to the next process for treatment.

[0038] Relative to the pool bottom, the water inlet 101 is higher than the sewage outlet 102 and the water suction outlet 103 .

[0039] See Figure 2-5 The partition plate 104 defines a mounting hole 105 for mounting the filter assembly 200 , and a rotation hole 108 is provided on the top wall and the bottom wall of the mounting hole 105 .

[0040] The filter assembly 200 includes a mounting frame 210 and a filter screen cartridge 220. The top wall and bottom wall inside the mounting frame 210 are arc surfaces that match the outer circumferential surface of the filter screen cartridge 220. The top and bottom surfaces inside the mounting frame 210 are fixedly connected with first bristles 211, which are in contact with the outer circumferential surface of the filter screen cartridge 220.

[0041] The center of the top and bottom surfaces of the outer side of the mounting frame 210 are both provided with mounting frame shafts 212, which are inserted into the rotating hole 108. The mounting frame 210 is rotatably connected to the partition plate 104 through the mounting frame shafts 212 and the rotating hole 108. The mounting frame 210 is pushed hard to rotate the mounting frame 210 out of the mounting hole 105, which makes it convenient to take out the filter screen cartridge 220 and clean and maintain the filter screen cartridge 220 and the first brush 211. When filtering, the mounting frame 210 is rotated and pushed into the mounting hole 105 so that the mounting frame 210 is tightly connected to the mounting hole 105.

[0042] See Figure 5-7 The filter cartridge 220 is cylindrical in shape and has a mesh pattern on its circumference. The mesh pattern is determined based on the actual application scenario. In this embodiment, a 120-mesh stainless steel filter cartridge is used for the filter cartridge 220. A filter cartridge end cap 221 is fixedly connected to each end of the filter cartridge 220. The filter cartridge end cap 221 is fixedly connected to an end cap rotating shaft 223. The axis of the filter cartridge end cap 221 and the end cap rotating shaft 223 coincide. The axial length of the end cap rotating shaft 223 exceeds the axial length of the filter cartridge end cap 221. Both ends of the end cap rotating shaft 223 extend outside the ends of the filter cartridge end cap 221. At least one curved blade 222 is fixedly connected to the circumferential surface of one end of the end cap rotating shaft 223. If there are multiple blades 222, the multiple blades 222 are evenly distributed circumferentially on the circumferential surface of the end cap rotating shaft 223, and the blades 222 have the same curved direction. In this embodiment, there are three blades 222. During assembly, a filter cylinder end cover 221 is inserted into each end of the filter cylinder 220. The end of the filter cylinder end cover 221 with the blades 222 is inside the filter cylinder 220, and the end surface of the filter cylinder end cover 221 without the blades 222 is flush with the filter cylinder 220. The bending directions of the blades 222 of the filter cylinder end covers 221 at both ends are the same. The end cover rotating shaft 223 exposed outside the filter cylinder 220 is connected to the bearings set on the two side walls of the installation frame 210, and the filter cylinder 220 is rotatably connected to the installation frame 210 through the bearings.

[0043] When the filter assembly 200 is mounted on the partition plate 104 , the bending direction of the blades 222 is toward the first sub-tank 106 .

[0044] During use, the water level in the first sub-tank 106 is higher than the water level in the second sub-tank 107. The sewage flows from the first sub-tank 106 into the second sub-tank 107 via the filter screen cartridge 220. The flow of sewage gives the blades 222 a driving force, thereby driving the filter screen cartridge 220 to rotate. The first bristles 211, which are in contact with the outer circumferential surface of the filter screen cartridge 220, brush away large particles and suspended matter adhering to the outer circumferential surface of the filter screen cartridge 220, preventing the filter screen cartridge 220 from being blocked and allowing the filter screen cartridge 220 to maintain a good filtering effect. Example 2:

[0045] See also Figure 8 On the basis of Example 1, in this embodiment, a brush rod 213 fixedly connected to the mounting frame 210 is added on one side of the mounting frame 210 located at the first sub-tank 106. The length direction of the brush rod 213 is consistent with the axial direction of the filter screen cylinder 220. The brush rod 213 is provided with second bristles 214, which are in contact with the outer circumferential surface of the filter screen cylinder 220 to brush away large particles and suspended matter adhering to the outer circumferential surface of the filter screen cylinder 220, and the fallen large particles and suspended matter fall into the first sub-tank 106, avoiding the defect in Example 1 that some of the fallen large particles and suspended matter will remain in the gap between the filter screen cylinder 220 and the mounting frame 210, and the filter screen cylinder 220 needs to be removed regularly for cleaning. In this embodiment, at least the frequency of cleaning is reduced. Example 3:

[0046] See also Figure 9 On the basis of Example 1, in this embodiment, an inclined brush rod 215 fixedly connected to the mounting frame 210 is added to the side of the mounting frame 210 located at the first sub-pool 106. The length direction of the inclined brush rod 215 is inconsistent with the axial direction of the filter screen cylinder 220, and there is a certain angle. The angle of this embodiment is 8 degrees. A third brush 216 is provided on the inclined brush rod 215. The third brush 216 is in contact with the outer circumferential surface of the filter screen cylinder 220 to brush away the dirt adhering to the filter screen cylinder 220. 0, and the fallen large particles and suspended matter fall into the first sub-tank 106, thereby avoiding the defect in Example 1 that some of the fallen large particles and suspended matter remain in the gap between the filter screen cartridge 220 and the mounting frame 210, and the filter screen cartridge 220 needs to be regularly removed for cleaning. In addition, the use of the inclined bristle rod 215 reduces the probability of large particles and suspended matter being inserted into the filter mesh than the parallel bristle rod in Example 2, thereby preventing the filter mesh from being blocked.

[0047] This utility model provides an anti-clogging device for a sewage treatment filter. There are many methods and approaches for implementing this technical solution. The above is only a preferred embodiment of the utility model. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the utility model, and such improvements and modifications should also be considered within the scope of protection of the utility model. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. An anti-clogging device for a sewage treatment filter, comprising a sewage treatment tank (100), wherein the sewage treatment tank (100) is divided into a first sub-tank (106) and a second sub-tank (107) by a partition plate (104), characterized in that: The partition plate (104) is provided with a mounting hole (105), a filter assembly (200) is installed in the mounting hole (105), and sewage flows from the first sub-tank (106) into the second sub-tank (107) via the filter assembly (200); The filter assembly (200) comprises a mounting frame (210) and a filter screen cartridge (220) disposed in the mounting frame (210), wherein the top wall and the bottom wall inside the mounting frame (210) are both fixedly connected to first bristles (211), and both side walls inside the mounting frame (210) are provided with bearings; Both ends of the filter screen cartridge (220) are fixedly connected to filter screen cartridge end covers (221), and an end cover rotating shaft (223) is provided on the filter screen cartridge end cover (221). A blade (222) is fixedly connected to the circumferential surface of the end cover rotating shaft (223) located inside the filter screen cartridge (220), and a portion of the end cover rotating shaft (223) located outside the filter screen cartridge (220) is connected to a bearing inside the mounting frame (210). The filter screen cartridge (220) is rotatably connected to the mounting frame (210) via the bearing. When sewage flows through the filter screen cylinder (220), it pushes the blades (222), driving the filter screen cylinder (220) to rotate, and the first brush bristles (211) are in contact and sliding connection with the outer circumferential surface of the filter screen cylinder (220), brushing off the blockages attached thereto.

2. The anti-clogging device for a sewage treatment filter screen according to claim 1, characterized in that: Each end cover rotating shaft (223) is provided with at least one blade (222), and the blade (222) is an arc-shaped plate. If there are multiple blades (222), all blades (222) are radially distributed with the end cover rotating shaft as the center, and all blades (222) have the same bending direction and are all directed toward the first sub-tank (106).

3. The anti-clogging device for a sewage treatment filter screen according to claim 1, characterized in that: Rotary holes (108) are provided on the top wall and the bottom wall of the mounting hole (105), and the two rotary holes (108) are coaxially arranged; The top and bottom surfaces of the mounting frame (210) are both provided with mounting frame rotating shafts (212), and one end of each mounting frame rotating shaft (212) away from the mounting frame (210) is inserted into the corresponding rotating hole (108). The mounting frame (210) is rotatably connected to the partition plate (104) through the mounting frame rotating shafts (212) and the rotating holes (108).

4. The anti-clogging device for a sewage treatment filter screen according to claim 1, characterized in that: A water inlet (101) and a sewage outlet (102) are provided on the side wall of the first sub-tank (106), and a water pumping port (103) is provided on the side wall of the second sub-tank (107). Relative to the bottom of the tank, the water inlet (101) is arranged at a higher position than the sewage outlet (102) and the water pumping port (103).

5. An anti-clogging device for a sewage treatment filter screen according to any one of claims 1 to 4, characterized in that: A brush rod (213) is fixedly connected to one side of the mounting frame (210) located at the first sub-tank (106), wherein the length direction of the brush rod (213) is consistent with the axial direction of the filter screen cylinder (220), and second bristles (214) are provided on the brush rod (213), and the second bristles (214) are in contact with the outer circumferential surface of the filter screen cylinder (220).

6. An anti-clogging device for a sewage treatment filter screen according to any one of claims 1 to 4, characterized in that: An inclined brush rod (215) is fixedly connected to a side of the mounting frame (210) located at the first sub-tank (106), wherein the length direction of the inclined brush rod (215) and the axial direction of the filter screen cylinder (220) form an angle, and the inclined brush rod (215) is provided with third bristles (216), which are in contact with the outer circumferential surface of the filter screen cylinder (220).

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