Backflushing sewage filtering assembly and disinfection tank filtering device

Abstract

The utility model relates to the technical field of filtering equipment, in particular to a back-flushing sewage filtering assembly and a disinfecting tank filtering device, which comprise a filtering container arranged above a water body, a floating mechanism synchronously moving along with the lifting of the liquid level of the water body, and a back-flushing water source, the floating mechanism synchronously ascends and descends along with the liquid level of water under the influence of the buoyancy principle to drive the lifting seat and the sealing piece to axially move; when the floating mechanism ascends, the bottom of the hollow cavity is sealed by the sealing piece to form a sealed recoil cavity; when the backwashing water source discharges water flow into the backwashing cavity, the filter part on the side wall of the cavity can be subjected to backwashing, impurities attached to the filter material can be stripped and washed away, and self-cleaning is realized; when the liquid level drops, the floating mechanism sinks, the sealing piece is separated from the bottom of the hollow cavity, and the backflushing cavity is unsealed; impurities on the surface of the filtering part and in pores can be effectively removed, the filtering performance is recovered, and the service life of the filtering part is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, and in particular to a backwash sewage filtration component and a disinfection tank filtration device. Background Technology

[0002] In the field of wastewater treatment, wastewater filtration is an essential step. For example, when discharging water into disinfection tanks, biological treatment tanks, or other facilities, wastewater needs to be filtered. Filtering equipment uses filter components to remove suspended solids, debris, or silt from the wastewater. Filtering equipment often uses fixed filter screens or filter cartridges. After long-term use, impurities such as suspended solids, particulate matter, or biofilms can be trapped on the surface or pores of the filter components, causing blockage and affecting the filtration efficiency. Current technologies often involve manually replacing or disassembling the filter components for flushing, or directly backflushing the filter components to restore the permeability and filtration efficiency of the filter media, but the efficiency and effect are not ideal.

[0003] Based on this, the applicant is considering designing a backwash wastewater filtration assembly and disinfection tank filtration device to improve the cleaning efficiency and effectiveness of filtration components. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a backwashing sewage filtration component and a disinfection tank filtration device capable of backwashing.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A backwash wastewater filtration assembly includes a filter container disposed above a body of water, a floating mechanism that moves synchronously with the rise and fall of the water level, and a backwash water source.

[0007] The filter container has an axially arranged hollow cavity inside, a filter part is provided on the side wall of the hollow cavity, and a closed structure is provided on the top of the hollow cavity;

[0008] The floating mechanism is provided with a lifting seat located below the filter container. The top side of the lifting seat is connected to a sealing member located directly below the hollow cavity. When the floating mechanism rises, the sealing member can seal the bottom of the hollow cavity to form a backwash chamber. The backwash water source is used to drain water into the backwash chamber.

[0009] The working principle and advantages of a backwash wastewater filtration component in this technical solution are as follows:

[0010] The floating mechanism, influenced by buoyancy, rises and falls synchronously with the water level, driving the lifting seat and sealing components axially. When the floating mechanism rises, the sealing components close the bottom of the hollow cavity, forming a closed backwash chamber. Backwash water is then drained into the backwash chamber, which backwashes the filter section on the sidewall of the hollow cavity, removing impurities adhering to the filter media and achieving self-cleaning. When the water level drops, the floating mechanism sinks, the sealing components detach from the bottom of the hollow cavity, the backwash chamber is unsealed, and the filter section returns to its forward filtration state. The mechanism is highly automated, automatically rising and falling according to changes in the water level. When the water level reaches a certain height, the bottom of the hollow cavity is sealed by the sealing component, stopping the filtration assembly from draining water and preventing overflow due to excessive water level. At the same time, the sealing component creates a backwash chamber at the bottom of the hollow cavity, which backwashes the filtration section, improving the cleaning effect and efficiency. The floating mechanism can automatically rise and fall according to changes in the water level, eliminating the need for frequent manual intervention, reducing maintenance workload and costs, and improving work efficiency. Backwashing the filtration section with backwash water effectively removes impurities from the surface and pores of the filtration section, restoring filtration performance and extending the service life of the filtration components.

[0011] Furthermore, the filter container is an annular barrel shape, comprising an inner ring and an outer ring, with an annular cavity between the inner and outer rings, and the inner ring containing the hollow cavity. The filter section is disposed on the side wall of the inner ring.

[0012] Furthermore, the filtration section includes a filter tube fixedly connected to the inner annular side wall of the filter container, the filter tube protruding into the hollow cavity, and a filter plate connected to the free end of the filter tube.

[0013] Furthermore, the free end of the filter tube faces the top of the filter container, and a first mounting frame is provided at the free end of the filter tube; the sealing structure is a top cover that can be detachably connected to the top of the filter container, and a second mounting frame corresponding to the first mounting frame is connected to the top cover, and the filter plate is detachably connected inside the first mounting frame; when the top cover is connected to the filter container, the first mounting frame and the second mounting frame are merged so that the filter part is sealed between the two.

[0014] Furthermore, a first sealing gasket that contacts the filter plate is provided in the first mounting frame, and a second sealing gasket that contacts the filter plate is provided in the second mounting frame.

[0015] Furthermore, multiple filtration sections are provided on the inner ring sidewall of the filter container.

[0016] Furthermore, the top of the filter container is provided with a water inlet communicating with the hollow cavity, and the backwash water source is connected to the water inlet.

[0017] Furthermore, it also includes an electromagnet, which is fixedly connected to the bottom side of the filter container, and the top side of the lifting seat is provided with a magnetic attraction part corresponding to the electromagnet; a plurality of circumferentially distributed electromagnets are fixedly connected to the bottom side of the filter container.

[0018] Furthermore, it also includes a limiting structure for restricting the movement of the floating mechanism and limiting its axial lifting and lowering.

[0019] The disinfection tank filtration device includes one of the backwash sewage filtration components described above. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the disinfection tank filtration device installed inside the disinfection tank according to an embodiment of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the disinfection pool filtration device according to an embodiment of the present invention;

[0022] Figure 3 This is a top view of the disinfection pool filtration device according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic cross-sectional view of the disinfection pool filtration device according to an embodiment of the present invention. Figure 1 ;

[0024] Figure 5 This is an embodiment of the present invention. Figure 4 Enlarged view of point A in the middle;

[0025] Figure 6 This is a schematic cross-sectional view of the disinfection pool filtration device according to an embodiment of the present invention. Figure 2 ;

[0026] Figure 7 This is an embodiment of the present invention. Figure 6 Enlarged view of point B in the middle;

[0027] Figure 8 This is a schematic diagram of the three-dimensional structure of the filter container according to an embodiment of the present invention. Figure 1 ;

[0028] Figure 9 This is a schematic diagram of the three-dimensional structure of the filter container according to an embodiment of the present invention. Figure 2 ;

[0029] Figure 10 This is a three-dimensional structural diagram of the floating mechanism according to an embodiment of the present invention;

[0030] Figure 11This is a three-dimensional structural diagram of the current stabilizing component according to an embodiment of the present invention;

[0031] Figure 12 This is a three-dimensional structural diagram of the top cover and filter plate according to an embodiment of the present invention;

[0032] Figure 13 This is a three-dimensional structural diagram of the collection bucket and elastic sealing component according to an embodiment of the present invention;

[0033] In the above attached figures:

[0034] 10. Disinfection pool; 11. Liquid level; 12. Inlet pipe;

[0035] 100. Filter container; 101. Convex ring; 110. Filter tube; 111. First mounting frame; 112. First sealing gasket; 120. Sedimentation tank; 130. Overflow tank; 131. Drain outlet; 140. Elastic sealing element; 141. Hollow frame; 142. Spring; 143. Sealing block; 144. First sewage outlet; 151. Limiting rod; 152. Limiting plate; 160. Linkage lever; 170. Hollow cavity; 171. Water inlet; 172. Top cover; 1721. Fixing rod; 1722. Second mounting frame; 1723. Second sealing gasket; 1724. Filter plate; 180. Electromagnet; 190. Support column;

[0036] 200. Floating mechanism; 210. Float; 220. Mounting frame; 221. Drive rod; 230. Lifting seat; 231. Enclosure; 232. Sewage discharge chamber; 233. Second sewage discharge port; 234. Collection hopper; 235. Top rod;

[0037] 300. Flow stabilizer; 310. Water distributor; 320. Floating ring; 330. Support plate; 340. Restriction block; 351. First contact ring; 352. Second contact ring. Detailed Implementation

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Refer to together Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Figure 9 , Figure 10 as well as Figure 12 As shown, this embodiment provides a backwash wastewater filtration assembly, which includes a filter container 100 disposed above the water body, a floating mechanism 200 that moves synchronously with the rise and fall of the water level 11, and a backwash water source.

[0040] The filter container 100 has a hollow cavity 170 axially arranged inside, a filter part is provided on the side wall of the hollow cavity 170, and a closed structure is provided on the top of the hollow cavity 170.

[0041] The floating mechanism 200 is provided with a lifting seat 230 located below the filter container 100. The top side of the lifting seat 230 is connected to a sealing member 231 located directly below the hollow cavity 170. When the floating mechanism 200 rises, the sealing member 231 can seal the bottom of the hollow cavity 170 to form a backwash chamber. The backwash water source is used to drain water into the backwash chamber.

[0042] In this embodiment, the floating mechanism 200 rises and falls synchronously with the water surface 11 under the influence of buoyancy, driving the lifting seat 230 and the sealing member 231 to move axially. When the floating mechanism 200 rises, the sealing member 231 seals the bottom of the hollow cavity 170, forming a closed backwash chamber. Backwash water is then used to drain water into the backwash chamber. When the backwash water flows into the backwash chamber, it can backwash the filter section on the side wall of the hollow cavity 170, peeling off and washing away impurities attached to the filter media, achieving self-cleaning. When the liquid level drops, the floating mechanism 200 sinks accordingly, the sealing member 231 detaches from the bottom of the hollow cavity 170, the backwash chamber is unsealed, and the filter section returns to its forward filtration state. The system has a high degree of automation; the floating mechanism 200 can adjust its position according to the water level. The water level 11 automatically rises and falls according to changes in the water level 11. When the water level 11 reaches a certain height, the bottom of the hollow cavity 170 is sealed by the sealing component 231, stopping the filter assembly from draining water and preventing overflow due to excessive water level 11. At the same time, the sealing component 231 forms a backwash chamber at the bottom of the hollow cavity 170 to backwash the filter section, improving the cleaning effect and efficiency of the filter section. The floating mechanism 200 can automatically rise and fall according to changes in the water level 11, without the need for frequent manual intervention, reducing maintenance workload and costs, and improving work efficiency. Backwashing the filter section with backwash water can effectively remove impurities from the surface and pores of the filter section, restore filtration performance, and extend the service life of the filter components.

[0043] Preferably, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 8 , Figure 9 As shown, the filter container 100 is an annular barrel shape, comprising an inner ring and an outer ring. The area between the inner and outer rings forms an annular cavity. The inner ring contains a hollow cavity 170. The filtration section is located on the side wall of the inner ring. Wastewater enters through the annular cavity between the outer and inner rings. As it passes through the filtration section, impurities in the wastewater are trapped within the annular cavity. The filtered water then enters the hollow cavity 170 of the inner ring and is finally discharged from the bottom of the hollow cavity 170. The annular barrel structure ensures that the filtration section is evenly distributed on the side wall of the inner ring, increasing the filtration area and improving filtration efficiency.

[0044] Preferably, such as Figure 4 , Figure 5 , Figure 6 , Figure 8 As shown, the filtration section includes a filter tube 110 fixedly connected to the inner ring side wall of the filter container 100. The filter tube 110 protrudes into the hollow cavity 170, and a filter plate 1724 is connected to the free end of the filter tube 110. The filter container 100 performs filtration through the filter plate 1724 on the filter tube 110. The filter plate 1724 can be selected with a suitable filter medium according to specific filtration requirements, such as a stainless steel filter screen or a multi-layer filter plate 1724.

[0045] Preferably, such as Figure 4 , Figure 5 , Figure 6 , Figure 8 , Figure 12As shown, the free end of the filter tube 110 faces the top of the filter container 100, and a first mounting frame 111 is provided at the free end of the filter tube 110; the closed structure is a top cover 172 that can be detachably connected to the top of the filter container 100, and a second mounting frame 1722 corresponding to the first mounting frame 111 is connected to the top cover 172; the filter plate 1724 is detachably connected inside the first mounting frame 111; a first sealing gasket 112 that contacts the filter plate 1724 is provided inside the first mounting frame 111, and the second mounting frame 1722... A second sealing gasket 1723 is provided inside 722 to contact the filter plate 1724; when the top cover 172 is connected to the filter container 100, the first mounting frame 111 and the second mounting frame 1722 are merged to seal the filter section between them; when installing the filter plate 1724, the filter plate 1724 is first connected to the second mounting frame 1722, and then the top cover 172 is connected to the filter container 100, so that the first mounting frame 111 and the second mounting frame 1722 are merged together, at which time the filter plate 1724 is sealed. Half of the filter plate 1724 is located within the second mounting frame 1722, and the lower half extends into the first mounting frame 111, compressing the first sealing gasket 112 and the second sealing gasket 1723. This allows the filter plate 1724 to be sealed within the first mounting frame 111 and the second mounting frame 1722. The first sealing gasket 112 and the second sealing gasket 1723 effectively prevent sewage leakage, ensuring the sealing of the filtration process and preventing unfiltered sewage from flowing into the disinfection tank 10. When the filter plate 1724 needs to be replaced or maintained, it can be removed. The top cover 172 allows the filter plate 1724 to be removed from the hollow cavity 170, and then the filter plate 1724 on the second mounting frame 1722 can be processed without having to reach into the hollow cavity 170 to maintain or replace the filter plate 1724, greatly reducing the difficulty of maintaining and replacing the filter plate 1724; specifically, the second mounting frame 1722 is fixedly connected to the top cover 172 by multiple fixing rods 1721; more specifically, multiple filtration sections are provided on the inner ring side wall of the filter container 100 to improve filtration efficiency.

[0046] Preferably, such as Figure 3 and Figure 8 As shown, the top of the filter container 100 is provided with an inlet 171 that communicates with the hollow cavity 170, and the backwash water source is connected to the inlet 171; the backwash water source is the inlet 171 connected to a water pump or other water supply equipment, and the water supply equipment injects water into the hollow cavity 170 through the inlet 171.

[0047] Preferably, such as Figure 4 and Figure 8As shown, the backwash wastewater filtration assembly also includes an electromagnet 180, which is fixedly connected to the bottom side of the filter container 100. The top side of the lifting seat 230 is provided with a magnetic attraction part corresponding to the electromagnet 180. Multiple circumferentially distributed electromagnets 180 are fixedly connected to the bottom side of the filter container 100. When the electromagnet 180 is activated, it can magnetically attract the top side of the mounting seat, thereby driving the sealing part 231 to fit against the bottom of the hollow cavity 170, maintaining the state of forming a backwash chamber. This minimizes water leakage during backwashing and improves the backwashing effect. During backwashing, even if the water level 11 fluctuates, the magnetic attraction force of the electromagnet 180 can ensure the stability of the position of the lifting seat 230 and the sealing part 231, ensuring that the sealing of the backwash chamber is not affected and maintaining a stable backwashing state.

[0048] Preferably, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 , Figure 9 as well as Figure 10 As shown, the backwash wastewater filtration assembly also includes a limiting structure, which restricts the movement of the floating mechanism 200 and limits its axial lifting and lowering. The limiting structure restricts the movement of the floating mechanism 200 so that it can only move axially (i.e., vertically). This restriction ensures that the floating mechanism 200 can accurately move in the predetermined axial direction when the water level 11 rises or falls, without deviation or shaking. This ensures that the closure 231 on the lifting seat 230 of the floating mechanism 200 can accurately cooperate with the bottom of the hollow cavity 170. Specifically, the limiting structure includes a limiting plate 152 fixedly installed on the outer wall of the filter container 100 and a drive rod 221 fixedly installed on the floating mechanism 200.

[0049] Disinfection pool filtration device:

[0050] like Figure 1 As shown, it includes the backwash wastewater filtration assembly described above; the filter container 100 of the backwash wastewater filtration assembly is fixedly connected above the water body of the disinfection tank 10, and the floating mechanism 200 rises and falls synchronously with the rise and fall of the water level 11 of the disinfection tank 10.

[0051] Refer to together Figures 1-13 This embodiment provides a filtration device for the disinfection pool 10, and also includes a flow stabilizer 300 and a linkage lever 160;

[0052] The filter container 100 is positioned above the water in the disinfection tank 10, and the filter container 100 is equipped with a filter section for filtering the wastewater entering the disinfection tank 10.

[0053] The flow stabilizer 300 is floatingly installed inside the filter container 100, and the drainage entering the disinfection tank 10 is discharged into the filter container 100 through the flow stabilizer 300;

[0054] The floating mechanism 200 is located inside the disinfection tank 10 and moves synchronously with the rise and fall of the liquid level 11 in the disinfection tank 10.

[0055] The linkage lever 160 acts on the floating mechanism 200 and the flow stabilizer 300. When the liquid level 11 of the disinfection tank 10 rises, the floating mechanism 200 can drive the flow stabilizer 300 to move downward through the linkage lever 160 until the filter section of the filter container 100 is closed, thereby shutting off the drainage of the filter container 100 and switching the filter container 100 to a water storage state. When the liquid level 11 of the disinfection tank 10 falls, the flow stabilizer 300 moves upward with the buoyancy, opening the filter section of the filter container 100 to restore the drainage of the filter container 100.

[0056] In this embodiment, when the wastewater treated by the front-end treatment unit of the disinfection tank 10 is discharged into the disinfection tank 10, it is directly discharged into the flow stabilizer 300, and then discharged into the filter container 100 through the flow stabilizer 300. The filter container 100, which is set above the water body in the disinfection tank 10, filters the wastewater discharged into the disinfection tank 10 through its filtration section, filtering out impurities in the wastewater before it is discharged into the disinfection tank 10. The function of the flow stabilizer 300 is to make the wastewater discharged into the filter container 100 more stable during the discharge process, reduce water flow impact and interference, and allow the impurities filtered out in the filter container 100 to settle better in the filter container 100, thereby improving filtration efficiency. The floating mechanism 200 in the disinfection tank 10 moves synchronously with the rise and fall of the liquid level 11 in the disinfection tank 10. When the liquid level 11 in the disinfection tank 10 rises, the floating mechanism 200 moves in conjunction with the flow stabilizer 300. Lever 160 applies a downward force to flow stabilizer 300, driving it to move downwards until the filter section of filter container 100 is closed. At this time, filter container 100 switches to water storage mode and temporarily stops draining water into disinfection tank 10. When the liquid level 11 in disinfection tank 10 drops, lever 160 stops applying force to flow stabilizer 300, and flow stabilizer 300 moves upwards under buoyancy, opening the filter section of filter container 100. Filter container 100 then resumes draining water into disinfection tank 10. Through the filtration effect of filter container 100, impurities in wastewater are reduced, preventing impurities from shielding pathogens, improving the contact efficiency between disinfectant and pathogens, and reducing the risk of impurities in wastewater clogging the spray device of disinfection tank 10. This enhances the disinfection effect, reduces the risk of secondary pollution, and improves wastewater treatment efficiency. The floating mechanism 200, in conjunction with the linkage lever 160, can automatically adjust the water inlet status of the disinfection tank 10 according to the real-time changes in the liquid level 11. When the liquid level 11 in the disinfection tank 10 is too high, the water inlet is automatically shut off; when the liquid level 11 drops, the water inlet is automatically restored, without the need for manual intervention or other control systems. The dynamic adjustment of the water inlet function effectively prevents the disinfection tank 10 from overflowing due to excessive liquid level. Especially when the sewage treatment capacity fluctuates greatly due to factors such as peak water consumption and rainfall, it can respond promptly to changes in liquid level and ensure the normal operation of the disinfection tank 10.

[0057] Preferably, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 8 , Figure 9As shown, the outer wall of the filter container 100 is provided with an overflow trough 130, and the bottom of the overflow trough 130 is provided with a drain outlet 131. When the liquid level inside the filter container 100 is too high, the sewage will flow into the overflow trough 130 and be discharged through the drain outlet 131. The drain outlet 131 can be connected to the front-end treatment unit of the disinfection tank 10 for transportation (e.g., a sedimentation tank) to prevent unfiltered sewage from being discharged into the disinfection tank 10.

[0058] Preferably, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 8 , Figure 9 As shown, the filter container 100 is an annular barrel shape, which includes an inner ring and an outer ring. The annular cavity of the filter container 100 is located between the inner ring and the outer ring. A hollow cavity 170 is provided inside the inner ring of the filter container 100. The filter section is located on the side wall of the inner ring of the filter container 100. This is beneficial to increase the filtration area, improve the filtration efficiency, and make the filtration process more efficient.

[0059] Preferably, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown in the figure, the flow stabilizer 300 is an annular barrel-shaped component located within the annular cavity of the filter container 100. It includes an inner ring and an outer ring, with the annular cavity between them. A floating ring 320 is provided on the outer wall of the outer ring of the flow stabilizer 300, and multiple annularly distributed water distribution ports 310 communicating with the annular cavity of the flow stabilizer 300 are provided. The water distribution ports 310 are located below the floating ring 320. The annular barrel-shaped structure of the flow stabilizer 300 allows it to correspond and cooperate with the annular cavity of the filter container 100, ensuring uniform distribution of wastewater during filtration and improving filtration efficiency. The annularly distributed water distribution... The inlet 310 allows wastewater to enter the annular cavity of the filter container 100 smoothly, further stabilizing the water flow, reducing the impact of the water flow on the annular cavity of the filter container 100, and improving the sedimentation effect of the annular cavity of the filter container 100; the floating ring 320 allows the flow stabilizer 300 to move synchronously with the rise and fall of the liquid level 11 in the annular cavity of the filter container; the water distribution port 310 is located below the floating ring 320, and after water is injected into the annular cavity of the filter container 100, the water distribution port 310 is always located below the liquid level 11 inside the annular cavity of the filter container 100 to buffer the water flow; specifically, when the flow stabilizer 300 descends to its lowest point, the water distribution port 310 is located below the filtration section.

[0060] Preferably, such as Figure 4 , Figure 5 , Figure 8 , Figure 11As shown, a convex ring 101 is provided on the inner wall of the inner ring of the filter container 100, and the filter part is located below the convex ring 101. A first abutting ring 351 is provided on the inner wall of the inner ring of the flow stabilizer 300, which abuts against the convex ring 101. A second abutting ring 352 is provided on the bottom side of the flow stabilizer 300, which abuts against the inner bottom side of the filter container 100. When the flow stabilizer 300 descends to its lowest point, the first abutting ring 351 abuts against the convex ring 101, and the second abutting ring 352 abuts against the inner bottom side of the annular cavity of the filter container 100, forming a closed annular cavity and closing the filter part. At this time, the filter container 100 switches to a water storage state and temporarily stops draining water into the disinfection tank 10. Specifically, the contact surfaces of the first abutting ring 351 and the convex ring 101 and the contact surfaces of the second abutting ring 352 and the inner bottom side of the annular cavity of the filter container 100 are elastic surfaces (such as rubber pads) to enhance the sealing effect.

[0061] Specifically, such as Figures 1-3 As shown, the front-end treatment unit of the disinfection pool 10 drains water to the flow stabilizer 300 through the water inlet pipe 12. More specifically, the water inlet pipe 12 is fixedly connected to the filter container 100.

[0062] Specifically, such as Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 8 , Figure 11 As shown, several limiting rods 151 are fixedly connected to the inner ring of the filter container 100, and a number of limiting blocks 340 that cooperate with the limiting rods 151 are fixedly connected to the inner side wall of the inner ring of the flow stabilizer 300. The cooperation between the limiting rods 151 and the limiting blocks 340 can limit the lifting trajectory of the flow stabilizer 300.

[0063] Preferably, such as Figure 4 , Figure 5 , Figure 6 , Figure 8 As shown, the filtration section includes a filter tube 110 fixedly connected to the inner ring side wall of the filter container 100. The filter tube 110 protrudes into the hollow cavity 170, and a filter plate 1724 is connected to the free end of the filter tube 110. The filter container 100 is filtered through the filter plate 1724 on the filter tube 110. The filter plate 1724 can be selected with a suitable filter medium according to the specific filtration requirements, such as a stainless steel filter screen or a multi-layer filter plate 1724.

[0064] Preferably, such as Figure 4 , Figure 5 , Figure 6 , Figure 8 , Figure 12As shown, the free end of the filter tube 110 faces the top of the filter container 100. A first mounting frame 111 is provided at the free end of the filter tube 110, and a first sealing gasket 112 is provided inside the first mounting frame 111. A top cover 172 is detachably connected to the top of the filter container 100. A second mounting frame 1722 corresponding to the first mounting frame 111 is connected to the top cover 172. A second sealing gasket 1723 is provided inside the second mounting frame 1722. The filter plate 1724 is detachably connected inside the first mounting frame 111. When the top cover 172 is connected to the filter container 100, the first mounting frame 111 and the second mounting frame 1722 are merged to seal the filter section between them. When installing the filter plate 1724, the filter plate 1724 is first connected to the second mounting frame 1722, and then the top cover 172 is connected to the filter container 100, so that the first mounting frame 111 and the second mounting frame 1722 are merged together. At this time, the filter plate 1724 is detachably connected inside the first mounting frame 111. The upper half of the filter plate 1724 is located inside the second mounting frame 1722, and the lower half extends into the first mounting frame 111, squeezing the first sealing gasket 112 and the second sealing gasket 1723 to seal the filter plate 1724 within the first mounting frame 111 and the second mounting frame 1722. The first sealing gasket 112 and the second sealing gasket 1723 effectively prevent sewage leakage, ensuring the sealing of the filtration process and preventing unfiltered sewage from flowing into the disinfection tank 10. When the filter plate 1724 needs to be replaced or maintained, the top cover 172 can be removed to take the filter plate 1724 out of the hollow cavity 170, and then the filter plate 1724 on the second mounting frame 1722 can be processed. There is no need to extend into the hollow cavity 170 to maintain or replace the filter plate 1724, which greatly reduces the difficulty of maintaining and replacing the filter plate 1724. Specifically, the second mounting frame 1722 is fixedly connected to the top cover 172 by multiple fixing rods 1721.

[0065] Preferably, Figure 1 , Figure 2 , Figure 3 , Figure 8 , Figure 9 , Figure 10As shown, the floating mechanism 200 includes a mounting frame 220 and a float 210 fixedly connected thereto. A linkage lever 160 is fixedly mounted on the filter container 100. The linkage lever has two actuating ends: one actuating end is located above the mounting frame 220, and the other actuating end is located above the flow stabilizer 300. When the liquid level 11 in the disinfection tank 10 rises, the float 210 drives the mounting frame 220 to rise. When the mounting frame 220 rises, it pushes the actuating end located above the mounting frame 220, driving the actuating end located below the flow stabilizer 300 to descend, thereby applying force to the flow stabilizer 300. A downward force is applied to drive the flow stabilizer 300 to move downward. Specifically, the filter container 100 is detachably connected to multiple linkage levers 160, the mounting bracket 220 is provided with multiple driving rods 221 that cooperate with the linkage levers 160, and the flow stabilizer 300 is provided with multiple support plates 330 that cooperate with the linkage levers 160. More specifically, multiple limiting plates 152 that restrict the driving rods 221 are detachably connected to the outer wall of the outer ring of the filter container 100. The cooperation between the limiting plates 152 and the driving rods 221 can limit the lifting trajectory of the floating mechanism 200.

[0066] Preferably, such as Figure 1 As shown, the bottom side of the filter container 100 is fixedly connected to a plurality of support columns 190 which are fixedly connected to the bottom side of the disinfection pool 10; the filter container 100 is fixedly installed in the disinfection pool 10 through the support columns 190.

[0067] Preferably, refer to together Figures 1-13 The disinfection pool 10 filtration device also includes a sewage discharge structure; the bottom of the aforementioned filter container 100 is provided with a sedimentation tank 120, and the sedimentation tank 120 has a first sewage discharge port 144. An elastic sealing element 140 is installed at the first sewage discharge port 144. Under normal conditions, the elastic sealing element 140 seals the first sewage discharge port 144; the sewage discharge structure also includes a lifting seat 230 set on the floating mechanism 200, a sewage discharge chamber 232 on the lifting seat 232 and a collection hopper 234 connected thereto, and a top rod 235 is fixedly installed inside the collection hopper 234. The floating mechanism 200 drives the lifting seat 230. When rising, it can drive the collecting hopper 234 to contact the bottom of the filter container 100, and cause the top rod 235 to extend into the first drain port 144, contacting the elastic sealing member 140 to block the first drain port 144, allowing the impurities settled in the sedimentation tank 120 to flow through the first drain port 144, through the collecting hopper 234 and into the drain chamber 232; specifically, the drain chamber 232 is provided with a second drain port 233, and the contents of the drain chamber 232 can be discharged outward through the second drain port 233. The second drain port 233 can be connected to the front-end treatment unit of the disinfection tank 10 for transportation (e.g., sedimentation tank).

[0068] A sedimentation tank 120 is provided at the bottom of the filter container 100 to collect impurities generated during the filtration process. The first drain port 144 of the sedimentation tank 120 is naturally sealed by the elastic sealing element 140. As the liquid level 11 of the disinfection tank 10 rises, the floating mechanism 200 can drive the lifting seat 230 to rise, automatically discharging the impurities settled at the bottom of the filter container 100, achieving a sewage discharge state, realizing an automated sewage discharge function without manual intervention, improving the automation level and operating efficiency of the device. The design of the collection hopper 234 and the sewage discharge chamber 232 ensures that impurities can be effectively collected and transported, reducing the accumulation of impurities in the filter container 100 and reducing the maintenance frequency of the filter device. The elastic sealing element 140 seals the first drain port 144 in the natural state to prevent impurities from flowing back into the disinfection tank 10 in the non-discharge state, ensuring the water quality of the disinfection tank 10. The collected impurities are transported back to the front-end treatment unit of the disinfection tank 10 through the second drain port 233, realizing the recycling treatment of impurities and improving the resource utilization rate of the entire sewage treatment system.

[0069] Specifically, the aforementioned elastic sealing component 140 includes a hollow frame 141 fixedly connected to the bottom side of the sedimentation tank 120. A spring 142 is installed inside the hollow frame 141. One end of the spring 142 is fixedly connected to the hollow frame 141, and the other end is fixedly connected to the sealing block 143. The sealing block 143 is correspondingly arranged with the first sewage outlet 144. An elastic surface is provided at the contact point between the collection hopper 234 and the filter container 100 to provide cushioning and prevent wear.

[0070] Preferably, refer to together Figures 1-13 The disinfection pool 10 filtration device also includes a backwash structure, which includes a top cover 172 and a sealing member 231 installed on the mounting base. The top cover 172 seals the top of the hollow cavity 170, and the mounting base is provided with a sealing member 231 to seal the bottom of the hollow cavity 170. When the floating mechanism 200 drives the lifting seat 230 to rise, it can drive the sealing member 231 to seal the bottom of the hollow cavity 170, so that a closed backwash chamber is formed inside the hollow cavity 170. Then, backwash liquid is injected into the backwash chamber to backwash the filter section (filter plate 1724) inside the hollow cavity 170.

[0071] The top cover 172 of the filtration device in the disinfection tank 10 seals the top of the hollow cavity 170, and a sealing element 231 is provided on the mounting base. Under normal filtration conditions, the bottom of the hollow cavity 170 is open, allowing wastewater filtered by the filtration section to be discharged into the disinfection tank 10. When the floating mechanism 200 drives the lifting seat 230 to rise until the sealing element 231 seals the bottom of the hollow cavity 170, backwash liquid (using clean water, water in the disinfection tank 10, or other flushing liquid) is injected. As the backwash liquid is injected, the pressure in the backwash cavity gradually increases. The increased pressure causes the backwash liquid to backwash from the outside of the filtration section (filter plate 1724) to the inside. The water flow reverses through the filtration section, flushing down impurities and particles attached to the filter medium, thereby cleaning the filtration section. More specifically, the sealing element 231 is a barrel shape made of an elastic material (e.g., rubber) to improve the sealing effect. The bottom side of the top cover 172 can be provided with a protruding structure that extends into the hollow cavity 170 to reduce the amount of backwash liquid used.

[0072] Specifically, during the backwashing process, the disinfection and filtration device is in a sludge discharge state. Impurities discharged during backwashing flow into the sedimentation tank 120 along with the backwash liquid. Afterward, these impurities can be discharged from the filter container 100 through the sludge discharge structure, as described above. The discharge occurs through the first sludge discharge port 144, the collection hopper 234, and the sludge discharge chamber 232, finally exiting through the second sludge discharge port 233 to the front-end treatment unit of the disinfection tank 10. More specifically, when the flow stabilizer 300 descends to its lowest point, the first contact ring 351 contacts the convex ring 101, and the second contact ring 352 contacts the annular cavity of the filter container 100. When the inner bottom side abuts to form a closed ring cavity, backwash liquid is injected into the backwash cavity for backwashing. During backwashing, the backwash liquid enters the closed ring cavity through the filter section, flushes the sedimentation tank 120 inside the closed ring, and passes through the first drain port 144, collection hopper 234, and drain chamber 232, and is finally discharged to the front-end treatment unit of the disinfection tank 10 through the second drain port 233. While backwashing the filter plate 1724, the sedimentation tank 120 is also flushed. Regular backwashing reduces the risk of filter blockage and impurity accumulation in the sedimentation tank 120, and reduces maintenance frequency and cost.

[0073] Specifically, the top of the filter container 100 is provided with a water inlet 171 that communicates with the hollow cavity 170. The water inlet 171 is connected to a water pump or other water supply equipment, and the water supply equipment injects water into the hollow cavity 170 through the water inlet 171.

[0074] Specifically, the disinfection tank 10 filter device is equipped with a detection unit (not shown in the figure) that can detect whether the disinfection filter device is in a sewage discharge state (top cover 172 opens the elastic sealing member 140), a backwash chamber state (closing member 231 closes the bottom of the hollow cavity 170), or a closed ring chamber state (flow stabilizer 300 descends to the lowest point). The detection unit can use a contact sensor in the prior art, for example, the detection unit is placed against the filter container 100. The disinfection tank 10 filter device also includes a control unit that is communicatively connected to the detection unit. The control unit can turn the above-mentioned water supply equipment on or off through the detection signal of the detection unit.

[0075] Specifically, the filtration device of the disinfection pool 10 also includes an electromagnet 180, which is fixedly connected to the bottom of the filter container 100. When the electromagnet 180 is activated, it can magnetically attract the top of the lifting seat 230, allowing the filtration device to maintain a stable state of sewage discharge, forming a backwash chamber and a closed loop chamber. Even if the liquid level 11 fluctuates, the magnetic attraction of the electromagnet 180 can ensure the stability of the position of the lifting seat 230 and the sealing component 231, improving the backwash and sewage discharge effect. Of course, the activation and deactivation of the electromagnet 180 can be controlled by the control unit. The control unit can control the electromagnet 180 and the water supply equipment according to preset time, frequency, conditions or detection signals from the inspection unit to achieve automated control. Of course, it can also be controlled manually.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A backflushing sewage filter assembly characterised in that, It includes a filter container installed above the water body, a floating mechanism that moves synchronously with the rise and fall of the water level, and a backwash water source; The filter container has an axially arranged hollow cavity inside, a filter part is provided on the side wall of the hollow cavity, and a closed structure is provided on the top of the hollow cavity; The floating mechanism is provided with a lifting seat located below the filter container. The top side of the lifting seat is connected to a sealing member located directly below the hollow cavity. When the floating mechanism rises, the sealing member can seal the bottom of the hollow cavity to form a backwash chamber. The backwash water source is used to drain water into the backwash chamber.

2. A backflushing sewage filter assembly as claimed in claim 1 wherein, The filter container is annular and includes an inner ring and an outer ring. The inner ring and the outer ring form an annular cavity. The inner ring is a hollow cavity. The filter section is disposed on the side wall of the inner ring.

3. The backwash wastewater filtration assembly as described in claim 2, characterized in that, The filtration section includes a filter tube fixedly connected to the inner ring side wall of the filter container. The filter tube protrudes into the hollow cavity, and a filter plate is connected to the free end of the filter tube.

4. A backflushing sewage filter assembly as claimed in claim 3 wherein, The free end of the filter tube faces the top of the filter container, and a first mounting frame is provided at the free end of the filter tube; the closed structure is a top cover that can be detachably connected to the top of the filter container, and a second mounting frame corresponding to the first mounting frame is connected to the top cover, and the filter plate is detachably connected in the first mounting frame; when the top cover is connected to the filter container, the first mounting frame and the second mounting frame are merged so that the filter part is sealed between the two.

5. A backflushing sewage filter assembly as claimed in claim 4 wherein, The first mounting frame is provided with a first sealing gasket that contacts the filter plate, and the second mounting frame is provided with a second sealing gasket that contacts the filter plate.

6. A backwash sewage filter assembly as claimed in claim 2 wherein, The filter container has multiple filter sections on its inner ring sidewall.

7. A backwash sewage filter assembly as claimed in claim 1 wherein, The filter container is provided with an inlet at the top that communicates with the hollow cavity, and the backwash water source is connected to the inlet.

8. A backwash sewage filter assembly as claimed in claim 1 wherein, It also includes an electromagnet, which is fixedly connected to the bottom side of the filter container, and the top side of the lifting seat is provided with a magnetic attraction part corresponding to the electromagnet; a plurality of circumferentially distributed electromagnets are fixedly connected to the bottom side of the filter container.

9. A backwash sewage filter assembly as claimed in claim 8 wherein, It also includes a limiting structure for restricting the movement of the floating mechanism and limiting its axial lifting and lowering.

10. A filter apparatus for a disinfection tank, characterized by Includes a backwash wastewater filtration assembly as described in any one of claims 1 to 9 above.

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