A water quality pretreatment system with intelligent self-cleaning function

Abstract

The present invention relates to the technical field of water quality pretreatment systems, and particularly to a water quality pretreatment system with an intelligent self-cleaning function. Its technical solution includes: a chassis, a water inlet and a water outlet provided on the chassis, a filter element fixedly installed inside the chassis, and further includes a pipeline connecting the inside of the filter element to the water inlet, a driving device, an isolation cover installed on the driving device for separating the space at the inner wall of the filter element, and a pressurization module for extruding the liquid outside the filter element. The driving device drives the isolation cover and the pressurization module to perform synchronous circular motion. A discharge pipe is fixedly installed at the bottom of the isolation cover, and a valve assembly for controlling the blockage of the discharge pipe is installed on the discharge pipe. The present invention is applicable to working environments that require continuous filtration of sewage and have a large amount of impurities, can avoid the filter element being easily blocked quickly, prevent the reduction of filtration efficiency caused by the blockage of the filter element, and does not require shutdown during backwashing and cleaning, which is beneficial to improving the filtration effect.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality pretreatment systems, and particularly to a water quality pretreatment system with an intelligent self-cleaning function. Background Art

[0002] With the booming development of the marine economy, the marine environment faces many challenges, among which the impact of sewage discharge on marine water quality is particularly prominent. A large amount of sewage containing various impurities is continuously discharged into the ocean, making the pretreatment of marine water quality a key precondition in the marine water quality detection process. The water quality pretreatment system is a key link in the water treatment process, aiming to remove large particulate impurities and suspended solids in sewage to reduce the burden on subsequent treatment units. Filter element filtration, as the core technology for preliminary filtration, has the advantages of simple structure, convenient operation, low cost, etc., and is widely used in the field of sewage treatment. Filter element filtration removes large particulate impurities in sewage through physical interception, and its working principle is to use the pore size of the filter element to intercept particles larger than the pore size. The filter element materials are mostly stainless steel, nylon, polyester, etc., and the pore size can be selected according to requirements, and common ones include microfiltration and coarse filtration.

[0003] Automatic cleaning of the filter element is the key to ensuring the continuous and efficient operation of the filtration system. Common automatic cleaning methods include scraper cleaning and backwashing. Among them, backwashing can remove fine impurities in the pores of the filter element, and the cleaning effect is better. Specifically, backwashing is carried out by flushing the filter element with reverse water flow to remove the impurities attached to the filter element. The backwashing water flow is usually provided by a high-pressure water pump, and the water flow direction is opposite to the normal filtration direction, flushing the impurities off the filter element and discharging them from the system. However, the backwashing component cannot be used in the working environment because the backwashing water flow direction is opposite to the water flow direction through the filter element during filtration. Therefore, during backwashing, it is necessary to stop the machine and then carry out the backwashing operation.

[0004] Existing marine water quality filtration systems are difficult to adapt to such a complex working environment with a large amount of sewage and many impurities. At present, in actual operation, a sewage sedimentation tank is usually used to conduct preliminary sedimentation treatment on a large amount of marine sewage to relieve the pressure on the subsequent filtration system, but this method still has certain limitations and cannot fundamentally solve the contradiction between efficient continuous filtration and filter element cleaning. Summary of the Invention

[0005] The purpose of the present invention is to address the problems in the background art and propose a water quality pretreatment system with an intelligent self-cleaning function that can adapt to a large amount of sewage with many impurities and can perform backwashing on the filter element while filtering.

[0006] The technical solution of the present invention: A water quality pretreatment system with an intelligent self-cleaning function includes a chassis, a water inlet and a water outlet provided on the chassis, and filter elements fixedly installed inside the chassis, and further includes:

[0007] A pipe connecting the interior of the filter element to the water inlet;

[0008] A driving device, on which an isolation cover for separating the space at the inner wall of the filter element and a pressurizing module for extruding the liquid outside the filter element are installed. The driving device drives the isolation cover and the pressurizing module to perform synchronous circular motion. A discharge pipe is fixedly installed at the bottom of the isolation cover, and a valve assembly for controlling the blockage of the discharge pipe is installed on the discharge pipe;

[0009] A sealing module installed on the isolation cover for sealing the gap between the isolation cover and the filter element. The sealing module includes multiple groups of sealing plates. The sealing module drives the multiple sealing plates to rotate towards the interior of the isolation cover, and makes at least two sealing plates contact the isolation cover and the filter element respectively.

[0010] Optionally, the valve assembly includes a sewage discharge pipe fixedly installed on the chassis. The discharge pipe is rotationally connected to the chassis and the sewage discharge pipe and is sealed. A valve is fixedly installed on the sewage discharge pipe.

[0011] Optionally, the sealing module includes a rotating shaft rotationally installed on the driving device. The sealing plate includes a first sliding sleeve fixedly installed on the rotating shaft, a first sliding plate slidably installed in the first sliding sleeve, a rubber strip fixedly installed on the first sliding plate, and a first spring fixedly installed between the first sliding plate and the first sliding sleeve.

[0012] Optionally, extension plates are provided on both sides of the isolation cover. A circular groove is formed in the first sliding sleeves located on the same rotating shaft. A first motor is installed in the groove, and the output shaft of the first motor is coaxially fixedly connected to the rotating shaft. A motor base is fixedly installed on the isolation cover, and the first motor is fixedly connected to the motor base.

[0013] Optionally, the pressurizing module includes a conical pipe fixedly installed on the driving device. Pressure plates are rotationally installed on both sides of the conical pipe. A telescopic side sealing plate is fixedly installed on the sides of the two pressure plates, and a telescopic end face sealing plate is fixedly installed at the upper and lower ends of the two pressure plates. A plurality of one-way valves for enabling the liquid outside the side sealing plate to enter the interior of the pressure plate in a single direction are fixedly installed on the side sealing plate.

[0014] Optionally, the pressurizing module further includes a connecting rod fixedly installed on the side sealing plate and a guide rod fixedly installed on the driving device. A slider is slidably installed on the guide rod. A connecting rod is rotationally installed between the slider and the connecting rod. A first push rod motor is fixedly installed on the driving device, and the output shaft of the first push rod motor is fixedly connected to the slider. A roller is rotationally installed at the bottom of the side sealing plate.

[0015] Optionally, the driving device includes a second motor fixedly installed on the chassis. A transmission shaft is rotatably installed in the chassis. The output shaft of the second motor is coaxially and fixedly connected to the transmission shaft. A support rod is slidably installed on the transmission shaft, and the support rod is fixedly connected to the isolation cover.

[0016] Optionally, the driving device further includes a support seat fixedly installed on the transmission shaft. A base is fixedly installed on the support seat, and both the guide rod and the first push rod motor are fixedly connected to the base.

[0017] Optionally, a waterproof box is fixedly installed on the transmission shaft. A second push rod motor is fixedly installed in the waterproof box, and the output shaft of the second push rod motor is fixedly connected to the support rod.

[0018] Optionally, a second sliding sleeve is fixedly installed inside the isolation cover. A second sliding plate is slidably installed in the second sliding sleeve. A scraper is fixedly installed on the second sliding plate, and a second spring is fixedly installed between the second sliding sleeve and the second sliding plate.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] Through the setting of the isolation cover, a certain backwashing space can be formed between the isolation cover and the filter element, and the water inside the filter element cannot enter this space, while this space can be filled with the liquid outside the filter element. That is, the existence of this space can enable the water outside the filter element to backwash the filter element. Therefore, the filter element can be backwashed during the filtration work, which is applicable to the working environment that requires continuous filtration of sewage and has a large amount of impurities. It can avoid the filter element being easily blocked quickly, prevent the reduction of filtration efficiency caused by the blockage of the filter element, and the backwashing cleaning does not require shutdown, which is beneficial to improving the filtration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the water quality pretreatment system;

[0022] Figure 2 It is a schematic structural diagram inside the chassis;

[0023] Figure 3 It is a schematic structural diagram of the filter element;

[0024] Figure 4 It is a schematic structural diagram inside the filter element;

[0025] Figure 5 For Figure 4 The partial enlarged view at A in

[0026] Figure 6 It is a schematic structural diagram of the driving device;

[0027] Figure 7 Schematic structural diagram of the sealing module;

[0028] Figure 8 is Figure 7 Partial enlarged view at position B in

[0029] Figure 9 Schematic structural diagram of the groove;

[0030] Figure 10 Schematic structure of the pressurization module Figure 1 ;

[0031] Figure 11 Schematic structure of the pressurization module Figure 2 .

[0032] Reference numerals: 1, chassis; 101, water inlet; 102, water outlet; 103, filter element; 104, pipeline; 2, isolation cover; 201, discharge pipe; 202, sewage pipe; 203, valve; 3, rotating shaft; 301, first sliding sleeve; 302, first sliding plate; 303, rubber strip; 304, first spring; 305, extension plate; 306, groove; 307, first motor; 308, motor base; 4, conical pipe; 401, pressing plate; 402, side sealing plate; 403, check valve; 404, end face sealing plate; 405, connecting rod; 406, guide rod; 407, slider; 408, connecting rod; 409, first push rod motor; 410, roller; 5, second motor; 501, transmission shaft; 502, support rod; 503, waterproof box; 504, second push rod motor; 505, support seat; 506, base; 6, second sliding sleeve; 601, second sliding plate; 602, scraper; 603, second spring. Detailed implementation manners

[0033] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] As Figures 1 to 4 and Figure 8 shown, a water quality pretreatment system with an intelligent self-cleaning function proposed by the present invention includes a chassis 1, a water inlet 101 and a water outlet 102 provided on the chassis 1, and a filter element 103 fixedly installed inside the chassis 1. It also includes a pipeline 104 that connects the inside of the filter element 103 with the water inlet 101. Sewage enters the inside of the chassis 1 through the water inlet 101, passes through the pipeline 104 and enters the inside of the filter element 103. The sewage is filtered by the filter element 103, and the filtered water will be discharged through the water outlet 102.

[0035] The water quality pretreatment system of this embodiment further includes a driving device. An isolation cover 2 for partitioning the space inside the inner wall of the filter element 103 and a pressurization module for extruding the liquid outside the filter element 103 are installed on the driving device. After the isolation cover 2 contacts the filter element 103, a certain space can be formed between the isolation cover 2 and the filter element 103, and the water inside the filter element 103 cannot enter this space, while this space can be filled with the liquid outside the filter element 103. That is, the existence of this space can enable the water outside the filter element 103 to backwash the filter element 103, and thus the filter element 103 can be backwashed during the filtration work. Since the water entering the inside of the filter element 103 from the outside needs a relatively high flow rate to effectively backwash the filter element 103, the pressurization module can be used to increase the water pressure when the outside of the filter element 103 backwashes the filter element 103. The driving device drives the isolation cover 2 and the pressurization module to perform synchronous circular motion. Through the driving device, the isolation cover 2 can sequentially block the inner wall of the filter element 103, so that the space on the filter element 103 that can be backwashed gradually changes on the filter element 103, thereby achieving the effect of cleaning the entire filter element 103. A discharge pipe 201 is fixedly installed at the bottom of the isolation cover 2, and a valve assembly for controlling the blockage of the discharge pipe 201 is installed on the discharge pipe 201. When cleaning the filter element 103, the valve assembly is used to make the discharge pipe 201 in a flowing state. At this time, the water for backwashing the filter element 103 will carry impurities and be discharged to the outside of the chassis 1 through the discharge pipe 201, thus completing the cleaning of the filter element 103.

[0036] Further, the valve assembly includes a sewage discharge pipe 202 fixedly installed on the chassis 1. The discharge pipe 201 is rotationally connected to the chassis 1 and the sewage discharge pipe 202 and is sealed. A valve 203 is fixedly installed on the sewage discharge pipe 202. The liquid containing impurities entering the inside of the discharge pipe 201 will enter the sewage discharge pipe 202. Opening the valve 203 can discharge the sewage. When the valve 203 is closed, the sewage cannot be discharged, and the water outside the filter element 103 cannot effectively enter the inside of the isolation cover 2 through the filter element 103. At this time, the filter element 103 will not be cleaned either.

[0037] It should be noted that good sealing performance needs to be maintained between the isolation cover 2 and the filter element 103. Otherwise, the space inside the isolation cover 2 can be filled with the water inside the filter element 103, which will affect the water inflow from the outside of the filter element 103 into the inside of the isolation cover 2, and even cause the water outside the filter element 103 to be unable to effectively enter the inside of the filter element 103, which will reduce the backwashing effect on the filter element 103.

[0038] Such as Figures 6 to 9As shown in the figure, the water quality pretreatment system of this embodiment further includes a sealing module installed on the isolation cover 2 to seal the gap between the isolation cover 2 and the filter element 103. The sealing module includes multiple groups of sealing plates. The sealing module drives multiple sealing plates to rotate towards the inside of the isolation cover 2, and makes at least two sealing plates contact the isolation cover 2 and the filter element 103 respectively. By setting multiple groups of sealing plates, the multiple groups of sealing plates alternately block the space between the inner wall of the isolation cover 2 and the filter element 103 in sequence, and at the same time, at least one group of sealing plates can effectively seal the isolation cover 2, which can ensure that the liquid inside the filter element 103 cannot directly enter the inside of the isolation cover 2, so that the liquid entering the inside of the isolation cover 2 enters the inside of the filter element 103 from the outside of the filter element 103, and an effective backwashing effect can be formed.

[0039] It should be noted that filter cakes will be formed on the inner wall of the filter element 103 due to the continuous accumulation of impurities. The filter cakes will be higher than the surface of the inner wall of the filter element 103. Since a good seal needs to be maintained between the isolation cover 2 and the filter element 103 all the time, and the existing sealing structure generally uses sealing strips for sealing. If sealing strips are used for sealing, the sealing strips need to be fixedly installed on the edge of the isolation cover in this device. However, since the isolation cover 2 needs to rotate along the inner wall of the filter element 103, the sealing structure between the isolation cover 2 and the filter element 103 will push the impurities on the filter element 103 to move, that is, push the filter cakes, and the part of the impurities pushed by the sealing structure can never enter the inside of the isolation cover 2. Therefore, the impurities on the inner wall of the filter element 103 cannot be effectively cleaned by using an ordinary sealing strip structure.

[0040] Furthermore, the sealing module includes a rotating shaft 3 rotatably installed on the driving device. The sealing plate includes a first sliding sleeve 301 fixedly installed on the rotating shaft 3, a first sliding plate 302 slidably installed in the first sliding sleeve 301, a rubber strip 303 fixedly installed on the first sliding plate 302, and a first spring 304 fixedly installed between the first sliding plate 302 and the first sliding sleeve 301. When the rotating shaft 3 rotates, it will drive multiple sealing plates to rotate, and the rotation directions of the sealing plates on the two rotating shafts 3 are both from the outside of the isolation cover 2 towards the inside of the isolation cover. In this way, the impurities in contact with the sealing plates can be pushed into the inside of the isolation cover 2 by the sealing plates, and the impurities pushed into the inside of the isolation cover 2 can be discharged out of the chassis 1 along with the liquid inside the isolation cover 2;

[0041] Among them, through the sliding setting of the first slide plate 302, when no external force acts, the first slide plate 302 can automatically reset to the longest state under the thrust of the first spring 304. The first slide plate 302 rotating with the rotating shaft 3 will sequentially and alternately abut against the inner walls of the isolation cover 2 and the filter element 103. After contacting the filter element 103 or the isolation cover 2, the first slide plate 302 will move into the interior of the first sliding sleeve 301, enabling the first slide plate 302 to smoothly pass through the isolation cover 2 and the filter element 103. Through the rubber strip 303 and the pressure exerted by the first spring 304 on the rubber strip 303, the space between the isolation cover 2 and the filter element 103 can be effectively sealed. In this embodiment, at least two sealing plates are in contact with the filter element 103 or the isolation cover 2 simultaneously, enabling double sealing. Even if one sealing plate fails to effectively seal the filter element 103, the other sealing plate can still ensure the sealing effect between the filter element 103 and the isolation cover 2.

[0042] Furthermore, extension plates 305 are provided on both sides of the isolation cover 2. A circular groove 306 is formed within the first sliding sleeves 301 located on the same rotating shaft 3. A first motor 307 is installed in the groove 306. Through the design of the groove 306, the occupied space during the installation of the first motor 307 can be reduced. The output shaft of the first motor 307 is fixedly connected to the rotating shaft 3 coaxially. By means of the first motor 307, the rotating shaft 3 can be driven to rotate, and the rotation direction of the rotating shaft 3 can be controlled. A motor seat 308 is fixedly installed on the isolation cover 2, and the first motor 307 is fixedly connected to the motor seat 308.

[0043] As Figure 7 shown, in this embodiment, a second sliding sleeve 6 is fixedly installed inside the isolation cover 2. A second slide plate 601 is slidably installed within the second sliding sleeve 6. A scraper 602 is fixedly installed on the second slide plate 601. A second spring 603 is fixedly installed between the second sliding sleeve 6 and the second slide plate 601. When the rubber strip 303 moves on the filter element 103, it can have a certain scraping effect on the impurities on the filter element 103. However, since the rubber strip 303 is a soft structure, its scraping effect cannot reach that of the scraper 602. Therefore, by providing the scraper 602 inside the isolation cover 2 and always making the scraper 602 abut against the filter element 103 under the action of the second spring 603, the gap formed between the scraper 602 and the filter element 103 due to the wear of the scraper 602 can be effectively compensated.

[0044] As Figure 5 and Figures 9 to 11As shown, in this embodiment, the pressurizing module includes a conical tube 4 fixedly installed on the driving device. Pressing plates 401 are rotatably installed on both sides of the conical tube 4. A telescopic side sealing plate 402 is fixedly installed on the sides of the two pressing plates 401. A telescopic end sealing plate 404 is fixedly installed at the upper and lower ends of the two pressing plates 401. A plurality of one-way valves 403 that allow the liquid outside the side sealing plate 402 to enter the inside of the pressing plate 401 in one direction are fixedly installed on the side sealing plate 402. Through the settings of the side sealing plate 402, the end sealing plate 404 and the pressing plates 401, a certain water storage space can be formed between the two pressing plates 401. Due to the setting of the one-way valves 403, the water outside the water storage space can enter the inside of the water storage space unidirectionally. When the two pressing plates 401 approach each other, the water storage space will be compressed, and the water inside the water storage space can enter the conical tube 4 and be sprayed out through the conical tube 4, so that the liquid outside the filter element 103 can perform a high-pressure backflush on the filter element 103. The flushing pressure of the high-pressure backflush on the filter element 103 depends on the closing speed of the two pressing plates 401. The faster the closing speed, the better the flushing effect on the filter element 103.

[0045] Furthermore, the pressurizing module further includes a connecting rod 405 fixedly installed on the side sealing plate 402 and a guide rod 406 fixedly installed on the driving device. A slider 407 is slidably installed on the guide rod 406. A connecting rod 408 is rotatably installed between the slider 407 and the connecting rod 405. A first push rod motor 409 is fixedly installed on the driving device. The output shaft of the first push rod motor 409 is fixedly connected to the slider 407. By driving the slider 407 to move reciprocally through the first push rod motor 409, and through the transmission of the connecting rod 408, the pressing plates 401 on both sides can be driven to perform periodic opening and closing movements. When the pressing plates 401 open and close, the water outside will enter between the two pressing plates 401. When the two pressing plates 401 close, the water inside the two pressing plates 401 can be sprayed out through the conical tube 4. And because the water inside the two pressing plates 401 is not continuously sprayed out, there will be a certain gap when backflushing the filter element 103. The gap can be compensated by installing two groups of pressurizing modules to operate alternately, or by increasing the number of turns of the pressurizing module rotating on the filter element 103. A roller 410 is rotatably installed at the bottom of the side sealing plate 402. Through the setting of the roller 410, the roller 410 can support the pressing plate 401.

[0046] As Figures 1 to 6As shown in the figure, in this embodiment, the driving device includes a second motor 5 fixedly installed on the chassis 1. A transmission shaft 501 is rotatably installed in the chassis 1. The output shaft of the second motor 5 is coaxially and fixedly connected to the transmission shaft 501. The transmission shaft 501 can be driven to rotate by the second motor 5. A support rod 502 is slidably installed on the transmission shaft 501, and the support rod 502 is fixedly connected to the isolation cover 2. The rotating transmission shaft 501 can drive the support rod 502 to rotate, and then drive the isolation cover 2 to rotate, so that the isolation cover 2 rotates along the filter element 103. When the filter element 103 does not need to be cleaned, the support rod 502 can be moved to separate the isolation cover 2 from the filter element 103. At this time, all positions on the filter element 103 can perform the filtering operation.

[0047] Furthermore, the driving device further includes a support seat 505 fixedly installed on the transmission shaft 501. A base 506 is fixedly installed on the support seat 505. The guide rod 406, the first push rod motor 409 and the conical tube 4 can be supported by the base 506, and the entire pressurization module can be driven to rotate along the filter element 103 with the isolation cover 2.

[0048] Among them, a waterproof box 503 is fixedly installed on the transmission shaft 501. A second push rod motor 504 is fixedly installed in the waterproof box 503. The output shaft of the second push rod motor 504 is fixedly connected to the support rod 502. The support rod 502 can be driven to move by the second push rod motor 504. The moving support rod 502 will drive the isolation cover 2 to move, and thus whether the isolation cover 2 seals the filter element 103 can be controlled by the second push rod motor 504.

[0049] In this embodiment, after the isolation cover 2 contacts the filter element 103, a certain space can be formed between the isolation cover 2 and the filter element 103, and the water inside the filter element 103 cannot enter this space, and this space can be filled with the liquid outside the filter element 103. That is, the existence of this space can enable the water outside the filter element 103 to backwash the filter element 103, and thus the filter element 103 can be backwashed during the filtering operation. Since the water entering the filter element 103 from the outside needs a relatively high flow rate to effectively backwash the filter element 103, the water pressure when the outside of the filter element 103 backwashes the filter element 103 can be increased through the pressurization module;

[0050] By providing multiple groups of sealing plates, the spaces between the isolation cover 2 and the inner wall of the filter element 103 are blocked by the multiple groups of sealing plates alternately in sequence. When the rotating shaft 3 rotates, it will drive the multiple sealing plates to rotate, and the rotation directions of the sealing plates on the two rotating shafts 3 are both from the outside of the isolation cover 2 to the inside of the isolation cover. In this way, the impurities in contact with the sealing plates can be pushed into the isolation cover 2 by the sealing plates, and the impurities pushed into the isolation cover 2 can be discharged out of the chassis 1 along with the liquid inside the isolation cover 2.

[0051] The above specific embodiments are only several alternative embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A water quality pretreatment system with intelligent self-cleaning function, comprising a chassis (1), a water inlet (101) and a water outlet (102) provided on the chassis (1), and a filter element (103) fixedly installed inside the chassis (1), characterized in that: Also includes: a pipe (104) connecting the interior of the filter element (103) with the water inlet (101); A driving device, wherein an isolation cover (2) for separating the space at the inner wall of the filter element (103) and a pressurizing module for squeezing the liquid outside the filter element (103) are installed on the driving device, and the driving device drives the isolation cover (2) and the pressurizing module to perform synchronous circular motion, a discharge pipe (201) is fixedly installed at the bottom of the isolation cover (2), and a valve assembly for controlling the blocking of the discharge pipe (201) is installed on the discharge pipe (201); A sealing module installed on the isolation cover (2) to seal the gap between the isolation cover (2) and the filter element (103), the sealing module comprising a plurality of sealing plates, the sealing module driving the plurality of sealing plates to rotate toward the interior of the isolation cover (2), and causing at least two sealing plates to contact the isolation cover (2) and the filter element (103) respectively; The sealing module comprises a rotating shaft (3) rotatably mounted on the driving device, and the sealing plate comprises a first sliding sleeve (301) fixedly mounted on the rotating shaft (3), a first sliding plate (302) slidably mounted in the first sliding sleeve (301), a rubber strip (303) fixedly mounted on the first sliding plate (302), and a first spring (304) fixedly mounted between the first sliding plate (302) and the first sliding sleeve (301); Extension plates (305) are provided on both sides of the isolation cover (2), and a circular groove (306) is formed in the first sliding sleeve (301) located on the same rotating shaft (3). A first motor (307) is installed in the groove (306), and the output shaft of the first motor (307) is coaxially fixedly connected to the rotating shaft (3). A motor seat (308) is fixedly installed on the isolation cover (2), and the first motor (307) is fixedly connected to the motor seat (308).

2. A water quality pretreatment system with intelligent self-cleaning function according to claim 1, characterized in that: The valve assembly comprises a sewage pipe (202) fixedly mounted on the chassis (1); the discharge pipe (201) is rotatably connected to the chassis (1) and the sewage pipe (202) and sealed; and a valve (203) is fixedly mounted on the sewage pipe (202).

3. A water quality pretreatment system with intelligent self-cleaning function according to claim 1, characterized in that: The pressurizing module comprises a conical tube (4) fixedly mounted on a driving device, pressure plates (401) being rotatably mounted on both sides of the conical tube (4), a retractable side sealing plate (402) being fixedly mounted on the sides of the two pressure plates (401), a retractable end face sealing plate (404) being fixedly mounted on the upper and lower ends of the two pressure plates (401), and a plurality of one-way valves (403) being fixedly mounted on the side sealing plates (402) for allowing liquid outside the side sealing plates (402) to enter the interior of the pressure plates (401) in one direction.

4. A water quality pretreatment system with intelligent self-cleaning function according to claim 3, characterized in that: The pressurizing module also includes a connecting rod (405) fixedly mounted on the side sealing plate (402) and a guide rod (406) fixedly mounted on the driving device. A slider (407) is slidably mounted on the guide rod (406). A connecting rod (408) is rotatably mounted between the slider (407) and the connecting rod (405). A first push rod motor (409) is fixedly mounted on the driving device. The output shaft of the first push rod motor (409) is fixedly connected to the slider (407). A roller (410) is rotatably mounted on the bottom of the side sealing plate (402).

5. A water quality pretreatment system with intelligent self-cleaning function according to claim 4, characterized in that: The driving device comprises a second motor (5) fixedly mounted on a chassis (1); a transmission shaft (501) is rotatably mounted in the chassis (1); an output shaft of the second motor (5) is coaxially fixedly connected to the transmission shaft (501); a support rod (502) is slidably mounted on the transmission shaft (501); and the support rod (502) is fixedly connected to the isolation cover (2).

6. A water quality pretreatment system with intelligent self-cleaning function according to claim 5, characterized in that: The driving device also includes a support seat (505) fixedly mounted on the transmission shaft (501), a base (506) fixedly mounted on the support seat (505), and the guide rod (406) and the first push rod motor (409) are both fixedly connected to the base (506).

7. A water quality pretreatment system with intelligent self-cleaning function according to claim 5, characterized in that: A waterproof box (503) is fixedly mounted on the transmission shaft (501), a second push rod motor (504) is fixedly mounted inside the waterproof box (503), and an output shaft of the second push rod motor (504) is fixedly connected to the support rod (502).

8. The water quality pretreatment system with intelligent self-cleaning function according to claim 1, characterized in that: A second sliding sleeve (6) is fixedly installed in the isolation cover (2), a second slide plate (601) is slidably installed in the second sliding sleeve (6), a scraper (602) is fixedly installed on the second slide plate (601), and a second spring (603) is fixedly installed between the second sliding sleeve (6) and the second slide plate (601).

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