Sewage impurity filtering and cleaning device

Abstract

The utility model provides a sewage impurity filtering and cleaning device and relates to the technical field of impurity filtering devices. The partition plate is installed in the filter box body, the interior of the filter box body is divided into two areas by the partition plate, one area is a water inlet area, and the other area is a water outlet area; a water inlet communicated with the water inlet area is formed in the bottom of the filtering box body; a filtering assembly for filtering impurities is arranged at the top of the water inlet area, and a discharging assembly for discharging the impurities is arranged in the water inlet area; when water flow reaches the filtering assembly arranged at the top of the water inlet area, the water flow can overflow the filtering assembly and enter the water outlet area, and impurities are intercepted in the water inlet area by the filtering assembly; when the impurities in the filtering assembly reach the upper limit, the discharging assembly is started, the impurities are discharged from the discharging assembly under the action of water flow, slag discharging is achieved through suction force generated by the water flow to the impurities, manual cleaning by operators is not needed, the cleaning efficiency is improved, and the sewage treatment progress is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of impurity filtering devices, and more specifically, to a sewage impurity filtering and cleaning device. Background Art

[0002] Sewage treatment refers to the process of purifying sewage to meet the water quality requirements for discharging into a certain water body or reusing it.

[0003] With the wide application of new water treatment equipment in urban sewage treatment, sewage is treated by using pool bodies such as mixing flocculation tanks, sedimentation tanks, and biochemical tanks. However, there are also many sundries falling into or being accidentally put into the front end and middle end of the above equipment during water intake. The impurities include clothing fabrics, cotton thread gauze, pockets, sand and stones, etc. If the above impurities enter the pumps such as the backflow pump, sludge pump, and surplus pump at the back end along with the liquid, the wear of the pumps will be aggravated. In the long run, it is easy to frequently cause abnormal situations such as the pumps being entangled and blocked by the above impurities, the shell being worn, and the impeller being broken; in the prior art, a filter is added at the front end of the above structure to filter the above impurities, but when the impurities are filtered by the filter, its filter holes are easily blocked, and it is necessary for the staff to manually clean the cleaning rotary screen before running again, which prolongs the cleaning cycle of sewage treatment and increases the processing cost of sewage treatment due to frequent cleaning. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a sewage impurity filtering and cleaning device, aiming at the deficiencies of the prior art, which can solve the problems put forward in the above background art.

[0005] The technical solution of the utility model is realized as follows:

[0006] The utility model provides a sewage impurity filtering and cleaning device, which includes a filtering box body and a partition board installed in the filtering box body. The partition board divides the inside of the filtering box body into two areas, one of which is the water inlet area and the other is the water outlet area; a water inlet communicating with the water inlet area is arranged at the bottom of the filtering box body; a filtering component for filtering impurities is arranged at the top of the water inlet area, and a discharging component for discharging impurities is arranged in the water inlet area.

[0007] In some technical solutions of the utility model, the filtering component includes a first filtering board installed at the top of the water inlet area, and a second filtering board abutted against the first filtering board is arranged on one side of the water inlet area close to the water outlet area. After the first filtering board and the second filtering board are enclosed, they are used to close the top of the water inlet area.

[0008] In some technical solutions of the present utility model, the discharge assembly includes a slag discharge pipe communicated with the water inlet area. There is an installation channel between the first filter plate and the second filter plate. A backwashing baffle is slidably arranged in the installation channel. A filter tank is formed between the backwashing baffle and the second filter plate. The connection between the slag discharge pipe and the water inlet area is disposed in the filter tank. The first filter plate is provided with a mounting plate parallel to the second filter plate. A through hole is opened on the mounting plate. An inlet and outlet adapted to the through hole is opened on the backwashing baffle. A ball valve is installed on the slag discharge pipe. When the impurities in the filter tank reach the upper limit, the backwashing baffle slides down vertically. The through hole and the inlet and outlet are misaligned. The backwashing baffle blocks the through hole and the ball valve is started. The impurities are discharged from the slag discharge pipe under the action of water flow.

[0009] In some technical solutions of the present utility model, a float level gauge or an ultrasonic level gauge is installed on the top of the first filter plate.

[0010] In some technical solutions of the present utility model, a worm gear and worm elevator is installed on the top of the filter box body. The output end of the worm gear and worm elevator is connected to the top of the backwashing baffle.

[0011] In some technical solutions of the present utility model, a slag discharge box is provided on the box body. The free end of the slag discharge pipe is placed in the slag discharge box. A filter screen is provided in the slag discharge box.

[0012] In some technical solutions of the present utility model, the second filter plate is in a "C" shape. Filter holes arranged in an array are opened on the side walls of the second filter plate.

[0013] Compared with the prior art, the embodiments of the present utility model have at least the following advantages or beneficial effects:

[0014] Water flow moves from the bottom of the filter box body to the top of the filter box body from bottom to top. When the water flow reaches the filter assembly provided at the top of the water inlet area, the water flow can overflow the filter assembly and enter the water outlet area. The impurities are intercepted by the filter assembly. When the impurities in the filter assembly reach the upper limit, the discharge assembly is opened. The impurities are discharged from the discharge assembly under the action of water flow. The suction force generated by the water flow on the impurities will be used to achieve slag discharge, without the need for operators to manually clean, improving the cleaning efficiency and accelerating the progress of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1Schematic three-dimensional structure diagram of the present utility model;

[0017] Figure 2 Partial sectional structure diagram of the present utility model;

[0018] Figure 3 Front view combined schematic diagram of the backwashing baffle and the mounting plate in the present utility model;

[0019] Figure 4 Exploded structure diagram of the installation of the backwashing baffle in the present utility model;

[0020] Figure 5 Combined structure diagram of the backwashing baffle, the first filter plate and the second filter plate in the present utility model.

[0021] Reference numerals: 1, filter housing; 2, slag discharge pipe; 3, ball valve; 4, slag discharge tank; 5, filter screen; 6, worm and worm gear lift; 7, backwashing baffle; 8, first filter plate; 9, second filter plate; 10, inlet and outlet; 11, mounting plate; 12, through hole; 13, rib plate; 14, reinforcing rib. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1

[0025] Please refer to Figures 1 - 5 as shown above.

[0026] The present utility model provides a sewage impurity filtering and cleaning device, such as Figure 1 , Figure 2As shown in the figure, it includes a filter box body 1 and a partition board installed in the filter box body 1. The partition board divides the inside of the filter box body 1 into two areas. One area is the water inlet area, and the other area is the water outlet area. The bottom of the filter box body 1 is provided with a water inlet communicating with the water inlet area. The top of the water inlet area is provided with a filter component for filtering impurities, and a discharge component for discharging impurities by the self-suction force generated by the water flow is arranged in the water inlet area. This technical solution is to avoid the blockage of pump parts by impurities and the damage of impurities to pump parts. This technical solution sets a filter box body 1 to filter the impurities contained in the water flow along the water flow filtration path formed by the partition board, improving the filtration efficiency of impurities of this equipment, avoiding the problem of pump parts being blocked by impurities and the damage of impurities to pump parts. The filtration process of this filter device is as follows: The water flow moves from the bottom of the filter box body 1 to the top of the filter box body 1 from bottom to top. When the water flow reaches the filter component arranged at the top of the water inlet area, the water flow can overflow the filter component and enter the water outlet area, and the impurities are intercepted by the filter component. When the impurities in the filter component reach the upper limit, the discharge component is opened, and the impurities are discharged from the discharge component under the action of the water flow. The suction force generated by the water flow on the impurities will be used to achieve slag discharge, without manual cleaning by the operator, improving the cleaning efficiency and accelerating the progress of sewage treatment.

[0027] In some technical solutions of the present utility model, the filter component includes a first filter plate 8 installed at the top of the water inlet area. A second filter plate 9 abutted against the first filter plate 8 is arranged on one side of the water inlet area close to the water outlet area. After the first filter plate 8 and the second filter plate 9 are enclosed, they are used to close the top of the water inlet area. The arranged first filter plate 8 is in a plate shape, which is installed on the top of the filter box body 1 through a frame body and is welded to the top of the partition board to improve the overall strength of this structure. The second filter plate 9 is in a "C" shape, and the second filter plate 9 is also welded to the top of the partition board, and reinforcing ribs 14 are arranged on its inner wall to improve its overall structural strength. Filter holes arranged in an array are opened on the side walls of the second filter plate 9 to ensure its good drainage capacity. The filter part enclosed by the first filter plate 8 and the second filter plate 9 is used to close the top of the water inlet area, avoiding the problem that impurities pass through the top of the water inlet area and cause the filtration ability of this equipment to fail.

[0028] Preferably, the top of the first filter plate 8 is basically flush with the theoretical liquid level.

[0029] Preferably, the distance between the first filter plate 8 and the second filter plate 9 is a gap of 6 - 7 mm, so that the backwash baffle 7 can slide up and down within this movement space.

[0030] In some technical solutions of the present utility model, the discharge assembly includes a slag discharge pipe 2 communicated with the water inlet area. There is an installation channel left between the first filter plate 8 and the second filter plate 9. An anti-flushing baffle 7 is slidably arranged in the installation channel. A filter tank is formed between the anti-flushing baffle 7 and the second filter plate 9. The connection between the slag discharge pipe 2 and the water inlet area is disposed in the filter tank. An installation plate 11 parallel to the second filter plate 9 is provided on the first filter plate 8. A through port 12 is opened on the installation plate 11. An inlet and outlet 10 adapted to the through port 12 is opened on the anti-flushing baffle 7. A ball valve 3 is installed on the slag discharge pipe 2. The ball valve 3 is an electric ball valve and can be controlled to start according to the PLC controller. When the impurities in the filter tank reach the upper limit, the anti-flushing baffle 7 slides down vertically. The through port 12 is misaligned with the inlet and outlet 10. The anti-flushing baffle 7 blocks the through port 12 and the ball valve is started. The impurities are discharged from the slag discharge pipe 2 under the action of water flow.

[0031] Preferably, a rib plate 13 is provided on the side wall of the anti-flushing baffle 7 facing the second filter plate 9. The provided rib plate 13 and the reinforcing rib 14 cooperate to play a guiding role in the movement of the anti-flushing baffle 7 and ensure the vertical movement of the anti-flushing baffle 7.

[0032] The working principles of the filter assembly and the discharge assembly are divided into two states:

[0033] The first state is the filtering state: the anti-flushing baffle 7 is lifted and the ball valve is closed. At this time, the through port 12 of the installation plate 11 is aligned with the inlet and outlet 10 on the anti-flushing baffle 7. As shown in Figure 2 , the sewage enters from the left water inlet of the filter box body 1, passes through the through port 12 and the inlet and outlet 10, and then enters the filter tank formed by the anti-flushing baffle 7 and the second filter plate 9 to intercept sundries. As the sundries filtered by the filter tank increase and the blockage rate of the filter holes increases, the liquid level height will gradually exceed the top of the first filter plate 8 and overflow into the water outlet area. A float ball or an ultrasonic level gauge is installed at the top of the overflow tank to detect the liquid level. When the above liquid level checker detects that the liquid level exceeds the set value, it indicates that the filter tank is severely blocked and the anti-flushing program needs to be started.

[0034] The second state is the backwash state: at this time, the worm gear lift 6 drives the backwash baffle 7 to descend, shielding the through port 12, thereby cutting off the water inlet. The inlet water passes through the top of the first filter plate 8 and overflows into the water outlet area, and the debris is still intercepted at the water inlet end. After the water inlet of the filter tank is cut off, the debris is retained in the filter tank and needs to be discharged. The inlet of the slag discharge pipe 2 is connected to the closed area of ​​the filter tank. At this time, the liquid level meter opens the electric ball valve through the control linkage of the PLC controller, and the debris is sucked out by the water flow through the slag discharge pipe 2; because the sewage in the box will flow back into the slag discharge pipe 2 through the filter hole, a siphon phenomenon will occur, thereby forming a cleaning effect on the filter tank (second filter plate 9), and the blocked hole will be restored. After the delayed cleaning is completed, the worm gear lift 6 lifts the backwash baffle 7, closes the electric ball valve, and enters the normal filtering state.

[0035] In some technical solutions of the utility model, a detection level meter is installed on the top of the first filter plate 8, and the detection level meter is a float level meter or an ultrasonic level meter. The above-mentioned float level meter, ultrasonic level meter or detection level meter are all existing technologies.

[0036] In some technical solutions of the present utility model, a worm gear elevator 6 is installed on the top of the filter box 1, and the worm gear elevator is connected to the top of the backwash baffle 7. The worm gear elevator 6 is also a prior art.

[0037] In some technical solutions of the utility model, a slag discharge box 4 is provided on the box body, the free end of the slag discharge pipe 2 is placed in the slag discharge pipe 2, and a filter screen 5 is provided in the slag discharge box 4. It is convenient to centrally clean the discharged impurities at a later stage.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sewage impurity filtering and cleaning device, characterized in that: It includes a filtering box body and a partition plate installed in the filtering box body. The partition plate divides the inside of the filtering box body into two areas, one area is the water inlet area, and the other area is the water outlet area; a water inlet communicating with the water inlet area is provided at the bottom of the filtering box body; a filtering component for filtering impurities is provided at the top of the water inlet area, and a discharging component for discharging impurities by generating self-suction by the flow of water is provided in the water inlet area. The filtering component includes a first filtering plate installed at the top of the water inlet area. A second filtering plate abuting against the first filtering plate is provided on one side of the water inlet area close to the water outlet area. After the first filtering plate and the second filtering plate enclose, they are used to close the top of the water inlet area. The discharging component includes a slag discharging pipe communicating with the water inlet area. An installation channel is left between the first filtering plate and the second filtering plate. A backwashing baffle is slidably arranged in the installation channel. A filtering groove is formed between the backwashing baffle and the second filtering plate. The connection between the slag discharging pipe and the water inlet area is disposed in the filtering groove. A ball valve is installed on the slag discharging pipe; when the impurities in the filtering groove reach the upper limit, the backwashing baffle slides down vertically, the through port is misaligned with the inlet and outlet, the backwashing baffle blocks the second filtering plate, and the ball valve is started, and the impurities are discharged from the slag discharging pipe under the action of water flow.

2. A sewage impurity filtering and cleaning device according to claim 1, characterized in that: A float level gauge or an ultrasonic level gauge is installed at the top of the first filtering plate.

3. A sewage impurity filtering and cleaning device according to claim 1, characterized in that: A worm gear and worm elevator is installed at the top of the filtering box body. The elevator of the worm gear and worm is connected to the top of the backwashing baffle.

4. The sewage impurity filtering and cleaning device according to claim 1, characterized in that: A slag discharging box is provided on the box body. The free end of the slag discharging pipe is placed in the slag discharging box, and a filter screen is provided in the slag discharging box.

5. The sewage impurity filtering and cleaning device according to claim 1, characterized in that: The second filtering plate is in a "C" shape, and filtering holes arranged in an array are opened on the side walls of the second filtering plate.

6. The sewage impurity filtering and cleaning device according to claim 1, characterized in that: An installation plate parallel to the second filtering plate is provided on the first filtering plate. A through port is opened on the installation plate, and an inlet and outlet adapted to the through port is opened on the backwashing baffle.

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