Sewage treatment equipment with backwashing mechanism

Abstract

The utility model relates to the technical field of sewage treatment, and discloses sewage treatment equipment with a backwashing mechanism, which comprises a sewage treatment tank, a water inlet is arranged at the lower position of one side of the sewage treatment tank, a water outlet is arranged at the upper position of one side of the sewage treatment tank, and a second blow-off pipe is arranged at the bottom end of the sewage treatment tank. A first filter screen is mounted at the lower position in the sewage treatment tank, a second filter screen is mounted at the upper position in the sewage treatment tank through a mounting plate, an adsorption filter element is arranged on the inner wall of the second filter screen, and a baffle is arranged around the outer ring of the second filter screen; by means of the first filter screen, the second filter screen and the adsorption filter element, filtration and adsorption can be conducted in sequence according to the size of impurities, large-particle pollutants are prevented from directly blocking the adsorption filter element, meanwhile, large influence on the cleaning efficiency is prevented, water flow can be separated after the precipitated impurities are treated, and the whole sewage treatment tank can be detached to be cleaned so that regular maintenance can be facilitated.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a wastewater treatment device with a backwashing mechanism. Background Technology

[0002] Wastewater refers to the unusable water discharged from people's daily lives, mainly originating from residential and public buildings. Wastewater contains too much garbage, which is easily putrefied and produces a foul odor. At the same time, bacteria and pathogens multiply rapidly by using the organic matter in domestic sewage as nutrients. Therefore, treatment equipment is needed to collect and treat wastewater. However, during the process of filtering impurities from wastewater, filter plates are easily clogged, affecting the treatment effect and rate. Therefore, wastewater treatment needs to have a backwashing function.

[0003] A search revealed a Chinese patent for a wastewater treatment device with a backwashing function, publication number CN211273774U. The device includes a wastewater processor, a cover plate, a drive motor, a rotating shaft, a sleeve, a first fixed seat, a spring, a second fixed seat, a mounting plate, and a first brush. The cover plate is fixedly connected to the top of the wastewater processor.

[0004] The above-mentioned device uses a drive motor, a rotating shaft, a sleeve, a first fixed seat, a spring, a second fixed seat, a mounting plate, and a first brush in combination. When the drive motor is working, it can drive the rotating shaft to rotate. The sleeve, the first fixed seat, the spring, and the second fixed seat drive the mounting plate to move in a circular motion. Since the first brush is in contact with the inner wall of the filter element, the first brush can clean the stubborn dirt on the inner wall of the filter element, so as to avoid the filter element from clogging and affecting the sewage treatment effect.

[0005] However, its water inlet structure is relatively simple, only guiding sewage through the inlet pipe, making it difficult to pre-block large impurities and pollutants. Large impurities and pollutants may directly clog the filter layer. At this time, the cleaning efficiency is low by simply pumping out the sludge by pressure difference, and the cleaning effect is poor when cleaning the inner wall of the filter element by rotation. Utility Model Content

[0006] The purpose of this invention is to provide a wastewater treatment device with a backwashing mechanism, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A wastewater treatment device with a backwashing mechanism includes a wastewater treatment tank, an inlet located at the lower side of one side of the wastewater treatment tank, a drain outlet located at the upper side of one side of the wastewater treatment tank, a second drain pipe located at the bottom of the wastewater treatment tank, and a first filter screen installed at the lower part of the interior of the wastewater treatment tank.

[0009] A second filter screen is installed at the upper part of the interior of the wastewater treatment tank via an mounting plate. An adsorption filter element is provided on the inner wall of the second filter screen. A baffle is provided around the outer ring of the second filter screen. A sealing ring is provided at the connection between the inner wall of the wastewater treatment tank and the baffle. A backwash water pipe is provided through the upper and lower ends of the first filter screen. A water supply pipe is connected to the lower part of the side of the wastewater treatment tank away from the inlet, and one end of the water supply pipe extending into the wastewater treatment tank is connected to the first backwash water pipe. A second backwash water pipe is provided through the bottom end of the second filter screen and the adsorption filter element. The bottom end of the second backwash water pipe is connected to the top end of the first backwash water pipe. A waterproof solenoid valve is provided at the connection between the first backwash water pipe and the second backwash water pipe.

[0010] Preferably, both filter screen one and filter screen two are cylindrical, and the pore size of filter screen one is larger than that of filter screen two.

[0011] Preferably, the bottom end of the filter screen two is connected to a drain pipe one near the drain outlet, and the end of the drain pipe one away from the filter screen two extends into the sewage treatment tank. A drain solenoid valve is provided on the outer ring of the drain pipe one.

[0012] Preferably, a cleaning motor is installed at the top of the sewage treatment tank, and a transmission rod is rotatably installed through the upper and lower ends of the mounting plate, with the top end of the transmission rod connected to the end of the drive shaft of the cleaning motor.

[0013] Preferably, the wastewater treatment tank has several dosing ports located at the rear of its outer ring, and an electrical control box is located on one side of the outer ring of the wastewater treatment tank. The electrical control box is electrically connected to the sewage discharge solenoid valve, the waterproof solenoid valve, and the cleaning motor.

[0014] Preferably, a sealing ring is provided at the connection between the transmission rod and the mounting plate, and a rotating frame is installed on both sides of the transmission rod at the lower position. A brush plate is connected to the end of the rotating frame away from the mounting plate through a mounting rod, and a clamping spring is provided on the opposite side of the brush plate and the rotating frame.

[0015] Preferably, the two ends of the clamping spring are fixedly connected to the brush plate and the rotating frame, respectively, and the outer side of the brush plate is in contact with the inner side of the adsorption filter element under the action of the clamping spring.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention, through the coordinated arrangement of filter screen one, filter screen two, and adsorption filter element, allows for the sequential filtration and adsorption of impurities according to their size during wastewater treatment. Impurities in the wastewater are intercepted and filtered in layers by filter screen one, filter screen two, and adsorption filter element, improving the overall filtration efficiency and clogging capacity of the filter screens. This prevents large particles of pollutants from directly clogging the adsorption filter element, while the stratified filtration and cleaning of impurities prevents significant impact on cleaning efficiency.

[0018] By setting up a cleaning motor, a retaining spring, and a brush plate to work together, the inner wall of the adsorption filter can be brushed during backwashing to improve the cleaning effect. The baffle can separate the water flow after the sedimented impurities are treated, and the entire sewage treatment tank can be disassembled for cleaning, so as to facilitate regular maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a sewage treatment device with a backwashing mechanism according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of filter screen one, adsorption filter element, and filter screen two in the embodiments of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of filter screen 2 and adsorption filter element in the embodiment of this utility model.

[0022] In the diagram: 1. Wastewater treatment tank; 2. Inlet; 3. Outlet; 4. Filter screen one; 5. Mounting plate; 6. Filter screen two; 7. Adsorption filter element; 8. Baffle; 9. Backwash pipe one; 10. Water supply pipe; 11. Backwash pipe two; 12. Waterproof solenoid valve; 13. Sewage pipe one; 14. Sewage solenoid valve; 15. Cleaning motor; 16. Rotating frame; 17. Brush plate; 18. Clamping spring; 19. Sewage pipe two. Detailed Implementation

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

[0024] Example 1

[0025] Combination Figures 1-3 A wastewater treatment device with a backwashing mechanism includes a wastewater treatment tank 1, an inlet 2 located at the lower side of the wastewater treatment tank 1, an outlet 3 located at the upper side of the wastewater treatment tank 1, and a drain pipe 19 located at the bottom of the wastewater treatment tank 1. A filter screen 4 is installed at the lower part of the interior of the wastewater treatment tank 1.

[0026] See Figure 2 and Figure 3Furthermore, a filter screen 6 is installed at the upper part of the interior of the sewage treatment tank 1 via a mounting plate 5. An adsorption filter element 7 is installed on the inner wall of the filter screen 6. A baffle 8 is installed around the outer ring of the filter screen 6. A sealing ring is installed at the connection between the inner wall of the sewage treatment tank 1 and the baffle 8. A backwash pipe 9 is installed at the upper and lower ends of the filter screen 4. A water supply pipe 10 is connected to the lower part of the side of the sewage treatment tank 1 away from the inlet 2, and one end of the water supply pipe 10 extending into the sewage treatment tank 1 is connected to the backwash pipe 9. A backwash pipe 11 is provided at the bottom of the filter element 7 and the adsorption filter element 2. The bottom of the backwash pipe 11 is connected to the top of the backwash pipe 9. A waterproof solenoid valve 12 is provided at the connection between the backwash pipe 9 and the backwash pipe 11. Both filter screen 4 and filter screen 6 are cylindrical, and the filter pore diameter of filter screen 4 is larger than that of filter screen 6. A cleaning motor 15 is installed at the top of the sewage treatment tank 1. A transmission rod is rotatably installed through the upper and lower ends of the mounting plate 5. The top of the transmission rod is connected to the end of the drive shaft of the cleaning motor 15.

[0027] Specifically, by connecting the sewage pipe to the inlet 2, the sewage is transported to the sewage treatment tank 1 for filtration. At this time, larger impurities in the sewage will be initially blocked and filtered by the filter screen 4, while small particles will pass through the filter screen 4 and enter the area above the filter screen 4. Then, the particles can be filtered and adsorbed by the filter screen 6 and the adsorption filter element 7. During filtration, the baffle 8 can separate the upper and lower parts of the adsorption filter element 7. After the sewage accumulates to a high level, it will flow from the adsorption filter element 7 and the filter screen 6 above the baffle 8 to the drain outlet 3 to prevent the impurities filtered by the filter screen 6 from directly entering the drain outlet 3. Then, the water pump pipe of the external water pump can be connected to the drain outlet 3 to pump out the treated sewage above the baffle 8. Then, sewage is repeatedly fed into the sewage treatment tank 1 for continuous treatment.

[0028] Example 2

[0029] See Figure 2Furthermore, based on Embodiment 1, the bottom end of filter screen 2 6 is connected to a drain pipe 13 near the drain outlet 3, and the end of drain pipe 13 away from filter screen 2 6 extends into the sewage treatment tank 1. A drain solenoid valve 14 is provided on the outer ring of drain pipe 13. Several dosing ports are provided at the rear position of the outer ring of sewage treatment tank 1. An electrical control box is provided on one side of the outer ring of sewage treatment tank 1. The electrical control box is electrically connected to the drain solenoid valve 14, the waterproof solenoid valve 12, and the cleaning motor 15. A sealing ring is provided at the connection between the transmission rod and the mounting plate 5. A rotating frame 16 is installed on the lower position of both sides of the transmission rod. A brush plate 17 is connected to the end of the rotating frame 16 away from the mounting plate 5 through the mounting rod. A clamping spring 18 is provided on the opposite side of the brush plate 17 and the rotating frame 16. The two ends of the clamping spring 18 are fixedly connected to the brush plate 17 and the rotating frame 16, respectively. Under the action of the clamping spring 18, the outer side of the brush plate 17 is in contact with the inner side of the adsorption filter element 7.

[0030] Specifically, when cleaning is required, the sewage pipes 19 and 13 are connected to the external sewage pump. The sewage pump can then be turned on to remove the pollutants filtered out of the sewage treatment tank 1. During removal, the water supply pipe 10 is connected to the external cleaning water supply pipe, and the filter screen 4 is opened to deliver the cleaning water to the backwash pipes 9 and 11 for backwashing. During the backwashing process, the drive shaft of the cleaning motor 15 can be controlled to rotate. The drive shaft of the cleaning motor 15 drives the brush plate 17 mounted on the rotating frame 16 to rotate continuously, brushing the inner wall of the adsorption filter element 7 to remove impurities. During backwashing, the waterproof solenoid valve 12 is closed, and the backwash water with a constant flow rate is sprayed only from the backwash pipe 9 to increase the speed of the backwash water flow and thus increase the backwashing force. By making appropriate adjustments, the cleaning effect on the adsorption filter element 7 and the backwash pipe 9 can be improved.

[0031] In actual operation, the time required for different sewage sedimentation and filtration in the existing technology will not be elaborated here. By connecting the sewage pipe to the inlet 2, the sewage is transported to the sewage treatment tank 1 for filtration. At this time, larger impurities in the sewage will be initially blocked and filtered by the filter screen 4, while small particles will pass through the filter screen 4 and enter the top of the filter screen 4.

[0032] At this time, the particles in the sewage can be filtered and adsorbed in the second filter screen 6 and the adsorption filter element 7. During filtration, the upper and lower parts of the adsorption filter element 7 can be separated by the baffle 8. After the sewage accumulates to a high level, the water will flow from the adsorption filter element 7 and the second filter screen 6 above the baffle 8 to the drain outlet 3 to prevent the dirt filtered out by the second filter screen 6 from entering the drain outlet 3. Then, the water pump pipe of the external water pump can be connected to the drain outlet 3 to pump out the treated sewage above the baffle 8. Then, sewage is repeatedly fed into the sewage treatment tank 1 for continuous treatment.

[0033] When cleaning is required, the sewage pipes 19 and 13 are connected to the external sewage pump. The sewage pump can then be turned on to remove the pollutants filtered out of the sewage treatment tank 1. During the removal, the water supply pipe 10 is connected to the external cleaning water supply pipe, and the filter screen 4 is turned on to deliver the cleaning water to the backwash pipe 9 and 11 for backwashing.

[0034] During the rinsing process, the drive shaft of the cleaning motor 15 can be controlled to rotate. The drive shaft of the cleaning motor 15 can drive the brush plate 17 mounted on the rotating frame 16 to rotate continuously, so as to brush the inner wall of the adsorption filter element 7 and brush off the impurities.

[0035] Furthermore, during backwashing, by closing the waterproof solenoid valve 12, the backwash water flow with a constant flow rate is sprayed out only from the backwash water pipe 9, which can increase the speed of the flushing water flow and thus increase the backwashing force. With appropriate adjustment, the cleaning effect on the adsorption filter element 7 and the backwash water pipe 9 can be improved. In addition, the sewage treatment tank 1 is set in a split manner to facilitate regular disassembly and maintenance.

[0036] Furthermore, the control components and modules used in the cleaning motor 15, waterproof solenoid valve 12, and sewage discharge solenoid valve 14 are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve improvements to the software and power supply.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device with a backwashing mechanism, comprising a wastewater treatment tank (1), wherein an inlet (2) is provided on one side of the wastewater treatment tank (1) at a lower position, an outlet (3) is provided on one side of the wastewater treatment tank (1) at a higher position, and a second drain pipe (19) is provided at the bottom end of the wastewater treatment tank (1), characterized in that: A filter screen (4) is installed at the lower part of the interior of the sewage treatment tank (1); A second filter screen (6) is installed on the upper part of the inside of the sewage treatment tank (1) via a mounting plate (5). An adsorption filter element (7) is provided on the inner wall of the second filter screen (6). A baffle (8) is provided around the outer ring of the second filter screen (6). A sealing ring is provided at the connection between the inner wall of the sewage treatment tank (1) and the baffle (8). A backwash pipe (9) is provided through the upper and lower ends of the first filter screen (4), extending through the sewage treatment tank (1) away from the inlet. 2) A water supply pipe (10) is connected to the lower side of the side, and one end of the water supply pipe (10) that extends into the sewage treatment tank (1) is connected to the backwash water pipe (9). A backwash water pipe (11) is provided at the bottom end of the filter screen (6) and the adsorption filter element (7). The bottom end of the backwash water pipe (11) is connected to the top end of the backwash water pipe (9). A waterproof solenoid valve (12) is provided at the connection between the backwash water pipe (9) and the backwash water pipe (11).

2. The wastewater treatment equipment with a backwashing mechanism according to claim 1, characterized in that: Both filter screen one (4) and filter screen two (6) are cylindrical, and the pore size of filter screen one (4) is larger than that of filter screen two (6).

3. A wastewater treatment device with a backwashing mechanism according to claim 1, characterized in that: The bottom end of the filter screen 2 (6) is connected to the drain outlet (3) and the drain pipe 1 (13) is connected to the drain outlet (3). The end of the drain pipe 1 (13) away from the filter screen 2 (6) extends into the sewage treatment tank (1). The outer ring of the drain pipe 1 (13) is equipped with a drain solenoid valve (14).

4. A wastewater treatment device with a backwashing mechanism according to claim 3, characterized in that: A cleaning motor (15) is installed at the top of the sewage treatment tank (1), and a transmission rod is rotatably installed through the upper and lower ends of the mounting plate (5). The top end of the transmission rod is connected to the end of the drive shaft of the cleaning motor (15).

5. A wastewater treatment device with a backwashing mechanism according to claim 4, characterized in that: The sewage treatment tank (1) has several dosing ports at the rear of its outer ring. The sewage treatment tank (1) has an electrical control box at one side of its outer ring, and the electrical control box is electrically connected to the sewage discharge solenoid valve (14), the waterproof solenoid valve (12), and the cleaning motor (15).

6. A wastewater treatment device with a backwashing mechanism according to claim 4, characterized in that: A sealing ring is provided at the connection between the transmission rod and the mounting plate (5). Rotating frames (16) are installed on both sides of the transmission rod at the lower position. A brush plate (17) is connected to the end of the rotating frame (16) away from the mounting plate (5) through the mounting rod. A clamping spring (18) is provided on the opposite side of the brush plate (17) and the rotating frame (16).

7. A wastewater treatment device with a backwashing mechanism according to claim 6, characterized in that: The two ends of the clamping spring (18) are fixedly connected to the brush plate (17) and the rotating frame (16) respectively. Under the action of the clamping spring (18), the outer side of the brush plate (17) is in contact with the inner side of the adsorption filter element (7).

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