Cleaning device of pre-membrane preprocessor

Abstract

The utility model provides a cleaning device of a pre-membrane pretreater, which belongs to the technical field of sewage treatment equipment and comprises a water inlet pipeline arranged at the water inlet end of a sewage pump, a filtering device arranged at the water inlet end of the water inlet pipeline and a first electric valve arranged at the middle section of the water inlet pipeline, a gas washing pipeline is arranged between the first electric valve and the water inlet end of the water inlet pipeline, a second electric valve is arranged at the gas inlet end of the gas washing pipeline, a backwashing pipeline is arranged at the gas outlet end of the gas washing pipeline, a communicating gas pipe is arranged at the gas inlet end of the second electric valve, and an air compressor unit is arranged at the gas inlet end of the communicating gas pipe; according to the utility model, the first electric valve is closed, the second electric valve is opened, and then the air compressor unit is started, so that high-speed compressed air is used for backwashing impurities in the filter cartridge through the backwashing pipeline and the air flushing hole, so that the impurities inside and outside the filter cartridge are washed away, and the remote automatic cleaning of the filter device is realized; therefore, the filtering device is convenient to clean and the working personnel can use the filtering device conveniently.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, specifically to a cleaning device for a membrane pretreatment process. Background Technology

[0002] Wastewater treatment plants use wastewater pumps to draw water from their wastewater tanks. In particular, to prevent large particles from being sucked in and clogging the pumps, medium and large pumps are usually equipped with a pre-membrane filter, or coarse filter, at the pump inlet. This coarsely filters the wastewater passing through the pump, thus preventing a large number of particulate impurities from clogging the pump.

[0003] Most coarse filtration devices in related technologies are mesh filter cartridges, which prevent large particles from entering the sewage pump. However, after prolonged operation, the surface of the filter screen becomes clogged with a large amount of particles and debris, affecting the pump's suction efficiency and posing a risk of pump damage. Cleaning this filter screen requires periodically emptying the sewage tank, followed by operators entering the tank to clean the filter screen with a brush, making the operation cumbersome and inconvenient. To address these issues, a pre-treatment cleaning device for membrane pretreatment is proposed. Utility Model Content

[0004] In view of this, the present invention provides a cleaning device for a pre-processor of a membrane. The present invention closes the first electric valve, opens the second electric valve, and then starts the air compressor unit to make high-speed compressed air backwash the impurities in the filter cartridge through the backwash pipe and the flushing hole, thereby washing away the impurities inside and outside the filter cartridge, thereby realizing remote automatic cleaning of the filter device, which facilitates the cleaning of the filter device and the use by the staff.

[0005] To solve the above-mentioned technical problems, this utility model provides a cleaning device for a pre-treatment membrane, including an inlet pipe installed at the inlet end of a sewage pump, a filter device installed at the inlet end of the inlet pipe, a first electric valve installed in the middle section of the inlet pipe, an air washing pipe installed between the first electric valve and the inlet end of the inlet pipe, a second electric valve installed at the air inlet end of the air washing pipe, a backwash pipe installed at the air outlet end of the air washing pipe, the backwash pipe extending into the filter device, a connecting air pipe installed at the air inlet end of the second electric valve, and an air compressor unit installed at the air inlet end of the connecting air pipe.

[0006] The filtration device includes a filter cylinder connected to the inlet end of the inlet pipe. The filter cylinder is used to pre-filter the sewage entering the sewage pump, thereby reducing impurities in the sewage flowing through the sewage pump. The surface of the filter cylinder is provided with multiple split-type filter components. The filter components are used to reinforce the filtration of sewage flowing through the filter cylinder. A positioning component is provided between every two filter components. The positioning component is used to fix the filter cylinder to the backwash pipe, thereby preventing the backwash pipe from shaking due to air discharge and causing the connection on the pipe to loosen. The positioning component is fixed to the inner wall of the filter cylinder.

[0007] Each filter assembly includes a clamp fixed to the outer surface of the backwash pipe. The clamp is used to detachably fix the backwash pipe to the arc-shaped filter plate. An arc-shaped filter plate is provided at the upper and lower ends of the clamp. The arc-shaped filter plate is used to coarsely filter the sewage passing through the filter cylinder.

[0008] The positioning assembly includes a lower positioning block fixed to the outer surface of the backwash pipe, which connects the backwash pipe to the support rod. A support rod is located on the side of the lower positioning block away from the backwash pipe, which connects the backwash pipe to an upper positioning block. An upper positioning block is located on the side of the support rod away from the backwash pipe, which fixes the support rod to the inner wall of the filter cartridge, thereby positioning the backwash pipe. The upper positioning block is fixed to the inner wall of the filter cartridge.

[0009] Multiple air purging holes are symmetrically arranged on both the left and right sides of the backwash pipe. The air purging holes are used to facilitate the high-pressure gas in the backwash pipe to purge the inside of the filter cartridge for backwashing, thereby blowing away the impurities remaining in the filter cartridge to the outside of the filter cartridge. A filter cotton plate is installed between the air purging hole at the very end of the backwash pipe and the water inlet end of the filter cartridge. The filter cotton plate is used to enhance the filtration effect at the water inlet end of the filter cartridge.

[0010] A positioning ring is integrally formed on the outer surface of the filter cartridge. The positioning ring is used to fix the outer wall of the filter cartridge and also to connect the filter cartridge to the positioning rod. A positioning rod is provided at both ends of the positioning ring. The positioning rod is used to connect the positioning ring to the mounting block. The end of the positioning rod away from the filter cartridge is provided with the mounting block. The mounting block is used to fix the positioning rod to the inner wall of the filter cartridge, thereby positioning the positioning ring and the filter cartridge and preventing them from shaking during operation.

[0011] A one-way valve is installed in the middle of the connecting air pipe. The one-way valve is used to prevent water entering the backwash pipe from flowing back into the air compressor unit, thereby improving the safety of equipment use.

[0012] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0013] 1. By closing the first electric valve, opening the second electric valve, and then starting the air compressor unit, high-speed compressed air enters the air washing pipe through the connecting pipe, and then enters the backwash pipe through the air washing pipe. The impurities in the filter cartridge are backwashed through the air flushing hole, thereby washing away the impurities inside and on the surface of the filter cartridge. This enables remote automatic cleaning of the filter device, making it convenient for staff to clean the filter device.

[0014] 2. The filter cartridge inside the filtration device pre-filters the sewage entering the sewage pump, thereby reducing impurities in the sewage flowing through the sewage pump. The positioning component can fix the backwash pipe, thereby preventing the backwash pipe from shaking due to air discharge and causing the pipe connections to loosen, thus reducing the stress on the connection points of the cleaning equipment and improving the service life of the equipment components.

[0015] 3. The positioning ring wraps and clamps the filter cartridge, thereby reducing the shaking when the filter cartridge filters wastewater, thus reducing the stress on the connection points of the cleaning equipment and improving the service life of the equipment components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a bottom sectional view of the present invention;

[0018] Figure 3 This is a side sectional view of the present invention;

[0019] Figure 4 This is a side sectional view of the present invention;

[0020] Figure 5 This utility model Figure 4 A magnified view of part A.

[0021] Explanation of reference numerals in the attached drawings: 100, sewage pump; 101, inlet pipe; 102, filter device; 103, first electric valve; 104, check valve; 200, air washing pipe; 201, second electric valve; 202, backwash pipe; 203, connecting air pipe; 204, air compressor unit; 300, filter cartridge; 301, filter assembly; 302, positioning assembly; 303, clamp; 304, arc-shaped filter plate; 305, lower positioning block; 306, support rod; 307, upper positioning block; 308, air purging hole; 309, filter cotton plate; 400, positioning ring; 401, positioning rod; 402, mounting block. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-5 The technical solutions of the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0023] like Figure 1-5 As shown: This embodiment provides a cleaning device for a pre-membrane pretreatment system, including an inlet pipe 101 installed at the inlet end of a sewage pump 100. The inlet pipe 101 is sealed to the inlet end of the sewage pump 100 via a flange. A filter device 102 is installed at the inlet end of the inlet pipe 101. The filter device 102 is used to coarsely filter the sewage entering the inlet pipe 101, thereby reducing the impact of sewage impurities on the sewage pump 100 and improving the service life of the sewage pump 100. A first electric valve 103 is installed in the middle section of the inlet pipe 101. The first electric valve 103 is sealed to the inlet pipe 101 via a flange. An air washing pipe 200 is installed between the first electric valve 103 and the inlet end of the inlet pipe 101. After being welded to the inlet pipe 101, the air washing pipe 200 is further connected to the backwash pipe 202 via a welded elbow fitting. The air inlet end is equipped with a second electric valve 201. Both the first electric valve 103 and the second electric valve 201 can be pneumatically or electrically controlled valves. The second electric valve 201 is connected to the air washing pipeline 200 by a flange seal. The air outlet end of the air washing pipeline 200 is equipped with a backwash pipeline 202. The backwash pipeline 202 is welded to the air washing pipeline 200 and extends axially into the middle of the filter device 102. The air inlet end of the second electric valve 201 is equipped with a connecting air pipe 203. One end of the connecting air pipe 203 is connected to the second electric valve 201 by a flange seal, and the other end of the connecting air pipe 203 is connected to the air outlet end of the air compressor unit 204 by a flange seal. The air compressor unit 204 is equipped at the air inlet end of the connecting air pipe 203. This air compressor unit 204 includes an oil circulation system, an air circulation system, a water circulation system, a power distribution system, and a shield protection system.

[0024] During use, sewage enters the inlet pipe 101 through the filter device 102, thereby reducing the impact of impurities in the sewage on the sewage pump 100. At this time, the first electric valve 103 is open and the second electric valve 201 is closed. When gas backwashing is required, the first electric valve 103 is closed, the second electric valve 201 is opened, and the air compressor unit 204 is started. High-speed compressed air enters the air washing pipe 200 through the connecting pipe, and then enters the backwash pipe 202 through the air washing pipe 200. The impurities in the filter cartridge 300 are backwashed through the air purging hole 308, thereby washing away the impurities inside and on the surface of the filter cartridge 300. The above steps are repeated to run the water pump normally. The first electric valve 103 and the second electric valve 201 of this application can be automatically opened and closed by PLC. The automatic control principle of the electric valves, sewage pump 100 and air compressor unit 204 is relatively mature in the prior art. Therefore, those skilled in the art are clear about the PLC control principle, and it will not be elaborated here.

[0025] This embodiment provides a cleaning device for a pre-treatment of membrane components.

[0026] like Figure 2 , 3 As shown in Figures 4 and 5: The filtration device 102 includes a filter cylinder 300 connected to the inlet end of the water inlet pipe 101. The filter cylinder 300 is fixed to the inlet end of the water inlet pipe 101 by a flange. The surface of the filter cylinder 300 is provided with multiple split-type filter components 301. The filter components 301 are used to reinforce the filtration of sewage flowing through the filter cylinder 300. A positioning component 302 is provided between every two filter components 301. The positioning component 302 is fixed to the inner wall of the filter cylinder 300.

[0027] Its effect is as follows: the filter cartridge 300 is used to pre-filter the sewage entering the sewage pump 100, thereby reducing the impurities in the sewage flowing through the sewage pump 100.

[0028] like Figure 2 , 3 As shown in Figures 4 and 5: Each filter assembly 301 includes a clamp 303 fixed to the outer surface of the backwash pipe 202. The clamp 303 consists of two circular clamping blocks, which clamp and fix the arc-shaped filter plate 304. The inner ring of the clamp 303 is welded and fixed to the outer wall of the backwash pipe 202. The clamp 303 and the arc-shaped filter plate 304 are fixed by bolts. An arc-shaped filter plate 304 is provided at the upper and lower ends of the clamp 303 respectively. The surface of the arc-shaped filter plate 304 is provided with several filter holes. The arc-shaped filter plate 304 is used to coarsely filter the sewage passing through the filter cylinder 300.

[0029] Its effect is as follows: the clamp 303 is used to detachably fix the backwash pipe 202 to the arc filter plate 304. The surface of the arc filter plate 304 is provided with several filter holes. The arc filter plate 304 is used to coarsely filter the sewage passing through the filter cylinder 300.

[0030] like Figure 2 , 3 As shown in Figures 4 and 5: The positioning assembly 302 includes a lower positioning block 305 fixed to the outer surface of the backwash pipe 202. The lower positioning block 305 is welded or heat-fused to the outer wall of the backwash pipe 202. The lower positioning block 305 is used to connect the backwash pipe 202 to the support rod 306. The support rod 306 is provided on the side of the lower positioning block 305 away from the backwash pipe 202. The support rod 306 and the lower positioning block 305 can be heat-fused or welded to each other. The support rod 306 is used to connect the backwash pipe 202 to the upper positioning block 307. The upper positioning block 307 is provided on the side of the support rod 306 away from the backwash pipe 202. The upper positioning block 307 is welded or heat-fused to the support rod 306. The upper positioning block 307 is used to weld or heat-fused to the inner wall of the filter cylinder 300 to fix the support rod 306, thereby positioning the backwash pipe 202. The upper positioning block 307 is fixed to the inner wall of the filter cylinder 300.

[0031] Its effect is as follows: the positioning component 302 is used to fix the filter cartridge 300 to the backwash pipe 202, thereby preventing the backwash pipe 202 from shaking when the air is discharged, which would cause the connecting parts on the pipe to loosen.

[0032] like Figure 2 , 3 As shown in Figures 4 and 5: Multiple air purging holes 308 are symmetrically arranged on both the left and right sides of the backwash pipe 202. The air purging holes 308 penetrate the pipe wall of the backwash pipe 202. A filter cotton plate 309 is arranged between the air purging hole 308 at the end of the backwash pipe 202 and the water inlet end of the filter cartridge 300. The filter cotton plate 309 is fitted and connected to the inner wall of the water inlet end of the filter cartridge 300. The filter cotton plate 309 is used to enhance the filtration effect of the water inlet end of the filter cartridge 300.

[0033] Its effect is as follows: the air purging hole 308 is used to facilitate the high pressure gas in the backwashing pipe 202 to purge and backwash the inside of the filter cartridge 300, thereby blowing the impurities remaining in the filter cartridge 300 to the outside of the filter cartridge 300.

[0034] like Figure 1 , 2As shown: A positioning ring 400 is integrally provided on the middle part of the outer surface of the filter cylinder 300. The positioning ring 400 consists of a ring composed of two arc-shaped blocks connected and fixed by bolts. The positioning ring 400 is used to fix the outer wall of the filter cylinder 300. The positioning ring 400 is also used to connect the filter cylinder 300 to the positioning rod 401. A positioning rod 401 is provided at both ends of the positioning ring 400. The positioning rod 401 is welded and fixed to the outer wall of the positioning ring 400. The positioning rod 401 is used to connect the positioning ring 400 to the mounting block 402. The end of the positioning rod 401 away from the filter cylinder 300 is provided with the mounting block 402. The mounting block 402 is welded and fixed to the positioning rod 401. The mounting block 402 is used to connect and fix the positioning rod 401 to the inner wall of the filter cylinder 300 by bolts, thereby positioning the positioning ring 400 and the filter cylinder 300 and preventing it from shaking during operation.

[0035] Its effect is as follows: the positioning ring 400 is used to wrap and clamp the filter cylinder 300, thereby reducing the shaking when the filter cylinder 300 filters wastewater, thereby reducing the stress on the connection of the cleaning equipment, and thus improving the service life of the equipment components.

[0036] like Figure 1 , 2 As shown in Figures 3 and 4: A one-way valve 104 is installed in the middle of the connecting air pipe 203. The one-way valve 104 and the connecting pipe can be connected by a flange seal. The one-way valve 104 is used to prevent water entering the backwash pipe 202 from flowing back into the air compressor unit 204, thereby improving the safety of equipment use.

[0037] Working principle: Wastewater enters the inlet pipe 101 through the filter device 102, thereby reducing the impact of impurities in the wastewater on the wastewater pump 100. At this time, the first electric valve 103 is open and the second electric valve 201 is closed. When air backwashing is required, the first electric valve 103 is closed, the second electric valve 201 is opened, and the air compressor unit 204 is started. High-speed compressed air enters the air washing pipe 200 through the connecting pipe, and then enters the backwash pipe 202 through the air washing pipe 200. Through the air flushing hole 308, the impurities in the filter cartridge 300 are backwashed, thereby washing away the impurities inside and on the surface of the filter cartridge 300. The above steps are repeated to allow the water pump to operate normally. In this application, both the first electric valve 103 and the second electric valve 201 can be controlled by PL. The automatic opening and closing of the electric valve, sewage pump 100, and air compressor unit 204 are based on relatively mature existing technologies. Therefore, those skilled in the art are familiar with the PLC control principle, and will not elaborate further here. The filter cartridge 300 in the filter device 102 performs pre-filtration of the sewage entering the sewage pump 100, thereby reducing impurities in the sewage flowing through the sewage pump 100. The positioning component 302 can fix the backwash pipe 202, thereby preventing the backwash pipe 202 from shaking due to air discharge and causing the pipe connections to loosen. The positioning ring 400 wraps and clamps the filter cartridge 300, thereby reducing the shaking when the filter cartridge 300 filters wastewater, thereby reducing the stress on the connection of the cleaning equipment and improving the service life of the equipment components.

[0038] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A cleaning device for a membrane pre-treatment unit, comprising a water inlet pipe (101) arranged at the water inlet end of a sewage pump (100), and a filter device (102) arranged at the water inlet end of the water inlet pipe (101), characterized in that: The middle section of the water inlet pipeline (101) is provided with a first electric valve (103), the first electric valve (103) and the water inlet end of the water inlet pipeline (101) are provided with an air washing pipeline (200), the air inlet end of the air washing pipeline (200) is provided with a second electric valve (201), the air outlet end of the air washing pipeline (200) is provided with a backwashing pipeline (202), the backwashing pipeline (202) extends into the filter device (102), the air inlet end of the second electric valve (201) is provided with a communication air pipe (203), and the air inlet end of the communication air pipe (203) is provided with an air compressor unit (204).

2. A cleaning device for a film preprocessor as claimed in claim 1, characterized in that: The filter device (102) comprises a filter cartridge (300) in communication with the water inlet end of the water inlet pipeline (101), the surface of the filter cartridge (300) is provided with a plurality of split type filter assemblies (301), one positioning assembly (302) is arranged between every two filter assemblies (301), and the positioning assembly (302) is fixed to the inner wall of the filter cartridge (300).

3. A cleaning device for a film preprocessor as claimed in claim 2, characterized in that: Each filter assembly (301) comprises a holder (303) fixed to the outer surface of the backwashing pipeline (202), and an arc-shaped filter plate (304) is arranged at each of the upper end and the lower end of the holder (303).

4. A cleaning device for a film preprocessor as claimed in claim 3, characterized in that: The positioning assembly (302) comprises a lower positioning block (305) fixed to the outer surface of the backwashing pipeline (202), a support rod (306) arranged on the side, away from the backwashing pipeline (202), of the lower positioning block (305), an upper positioning block (307) arranged on the side, away from the backwashing pipeline (202), of the support rod (306), and the upper positioning block (307) is fixed to the inner wall of the filter cartridge (300).

5. A cleaning device for a film preprocessor as claimed in claim 4, characterized in that: A plurality of air flushing holes (308) are symmetrically arranged on the left side and the right side of the backwashing pipeline (202), and a filter cotton plate (309) is arranged between the last air flushing hole (308) on the backwashing pipeline (202) and the water inlet end of the filter cartridge (300).

6. A cleaning device for a film preprocessor as claimed in claim 5, characterized in that: A positioning ring (400) is split type arranged on the middle section of the outer surface of the filter cartridge (300), a positioning rod (401) is arranged at each of the left end and the right end of the positioning ring (400), and a mounting block (402) is arranged on the end, away from the filter cartridge (300), of the positioning rod (401).

7. A cleaning device for a film preprocessor as claimed in claim 6, characterized in that: The middle section of the communication air pipe (203) is provided with a one-way valve (104).

Images