Water quality pretreatment system with intelligent self-cleaning function

Abstract

The invention relates to the technical field of water quality pretreatment systems, in particular to a water quality pretreatment system with an intelligent self-cleaning function. According to the technical scheme, the water purifier comprises a case, a water inlet and a water outlet which are formed in the case, a filter element fixedly mounted in the case, a pipeline for communicating the interior of the filter element with the water inlet, and a driving device, and an isolation hood for separating the space at the inner wall of the filter element and a pressurizing module for extruding liquid outside the filter element are mounted on the driving device. The driving device drives the isolation hood and the pressurizing module to synchronously move circumferentially, a discharging pipe is fixedly installed at the bottom of the isolation hood, and a valve assembly for controlling the discharging pipe to be blocked is installed on the discharging pipe. The filter element is suitable for a working environment in which sewage needs to be continuously filtered and many impurities exist, the situation that the filter element is easily and rapidly blocked can be avoided, the situation that the filter efficiency is reduced due to the fact that the filter element is blocked is prevented, shutdown is not needed during backwashing cleaning, and the filter effect is improved.

Description

Technical Field

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

[0002] With the vigorous 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 marine water quality pretreatment a key pre-link in the marine water quality testing process. The water quality pretreatment system is a key link in the water treatment process, which aims to remove large particle impurities and suspended solids in sewage to reduce the burden on subsequent treatment units. Element filtration, as the core technology of preliminary filtration, has the advantages of simple structure, convenient operation and low cost, and is widely used in the field of sewage treatment. Element filtration removes large particle impurities in sewage through physical interception. 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. The pore size can be selected according to needs. Common ones are microfiltration and coarse filtration.

[0003] Automatic cleaning of filter elements 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, backwash cleaning can remove fine impurities in the pores of the filter element, and the cleaning effect is better. Specifically, backwash cleaning flushes the filter element through reverse water flow to remove impurities attached to the filter element. The backwash water flow is usually provided by a high-pressure water pump. The direction of the water flow is opposite to the normal filtration direction, flushing impurities from the filter element and discharging them from the system. However, the backwash component cannot be used in a working environment. This is because the backwash will be opposite to the direction of the water flow through the filter element during filtration. Therefore, when backwashing, it is necessary to shut down and then perform the backwashing operation.

[0004] The existing marine water filtration system is difficult to adapt to the complex working environment with large amount of sewage and many impurities. At present, in actual operation, sewage sedimentation tanks are usually used to carry out preliminary sedimentation treatment on large amounts of marine sewage to relieve the pressure of subsequent filtration systems. However, 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 existing in the background technology and to propose a water quality pretreatment system with intelligent self-cleaning function that can adapt to large amounts of sewage and a large amount of impurities in the sewage and can backwash the filter element at the same time during filtration.

[0006] The technical solution of the present invention is a water quality pretreatment system with intelligent self-cleaning function, comprising a chassis, a water inlet and a water outlet arranged on the chassis, a filter element fixedly installed inside the chassis, and also comprising: a pipe connecting the interior of the filter element to the water inlet; 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 squeezing the liquid outside the filter element are installed, the driving device drives the isolation cover and the pressurizing module to move in a synchronous circular motion, a discharge pipe is fixedly installed at the bottom of the isolation cover, and a valve assembly for controlling the plugging of the discharge pipe is installed on the discharge pipe; A sealing module is installed on the isolation cover to seal the gap between the isolation cover and the filter element. The sealing module includes multiple sets of sealing plates. The sealing module drives the multiple sealing plates to rotate toward the inside of the isolation cover and makes at least two sealing plates contact the isolation cover and the filter element respectively.

[0007] Optionally, the valve assembly includes a drain pipe fixedly mounted on the chassis, the discharge pipe is rotatably connected to the chassis and the drain pipe and sealed, and a valve is fixedly mounted on the drain pipe.

[0008] Optionally, the sealing module includes a rotating shaft rotatably mounted on the driving device, and the sealing plate includes a first sleeve fixedly mounted on the rotating shaft, a first slide plate slidably mounted in the first sleeve, a rubber strip fixedly mounted on the first slide plate, and a first spring fixedly mounted between the first slide plate and the first sleeve.

[0009] Optionally, extension plates are provided on both sides of the isolation cover, and a circular groove is formed in the first sliding sleeve 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 seat is fixedly installed on the isolation cover, and the first motor is fixedly connected to the motor seat.

[0010] Optionally, the pressurizing module includes a conical tube fixedly mounted on a driving device, pressure plates are rotatably mounted on both sides of the conical tube, a retractable side sealing plate is fixedly mounted on the sides of the two pressure plates, a retractable end face sealing plate is fixedly mounted on the upper and lower ends of the two pressure plates, and a plurality of one-way valves are fixedly mounted on the side sealing plates to allow liquid on the outside of the side sealing plates to enter the inside of the pressure plates in one direction.

[0011] Optionally, the pressurizing module also includes a connecting rod fixedly mounted on the side sealing plate, a guide rod fixedly mounted on the driving device, a slider is slidably mounted on the guide rod, a connecting rod is rotatably mounted between the slider and the connecting rod, a first push rod motor is fixedly mounted on the driving device, an output shaft of the first push rod motor is fixedly connected to the slider, and a roller is rotatably mounted on the bottom of the side sealing plate.

[0012] Optionally, the driving device includes a second motor fixedly mounted on a chassis, a transmission shaft rotatably mounted in the chassis, an output shaft of the second motor is coaxially and fixedly connected to the transmission shaft, a support rod is slidably mounted on the transmission shaft, and the support rod is fixedly connected to the isolation cover.

[0013] Optionally, the driving device further comprises a support seat fixedly mounted on the transmission shaft, a base is fixedly mounted on the support seat, and the guide rod and the first push rod motor are both fixedly connected to the base.

[0014] Optionally, a waterproof box is fixedly mounted on the transmission shaft, a second push rod motor is fixedly mounted in the waterproof box, and an output shaft of the second push rod motor is fixedly connected to the support rod.

[0015] Optionally, a second sliding sleeve is fixedly installed in the isolation cover, a second slide plate is slidably installed in the second sliding sleeve, a scraper is fixedly installed on the second slide plate, and a second spring is fixedly installed between the second sliding sleeve and the second slide plate.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: By setting 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 the space, while the space can be filled with liquid on the outside of the filter element, that is, the existence of this space can make the water on the outside of the filter element backwash the filter element, and then the filter element can be backwashed during the filtering work. It is suitable for working environments that need to continuously filter and treat sewage and have a lot of impurities. It can avoid the filter element from being easily blocked quickly and prevent the filtration efficiency from being reduced due to the blockage of the filter element. There is no need to stop the machine for backwashing and cleaning, which is beneficial to improving the filtration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the water quality pretreatment system; Figure 2 It is a schematic diagram of the structure inside the chassis; Figure 3 It is the structural schematic diagram of the filter element; Figure 4 It is a schematic diagram of the structure inside the filter element; Figure 5 for Figure 4 A partial enlarged view of the middle A; Figure 6 is a schematic diagram of the structure of the driving device; Figure 7 It is a structural schematic diagram of the sealing module; Figure 8 for Figure 7 A partial enlarged view of point B in the middle; Fig. 9 is a schematic diagram of the structure of the groove; Fig.10 The structure of the pressurized module is shown in Figure 1. Figure 1 ; Fig.11 The structure of the pressurized module is shown in Figure 1. Figure 2 .

[0018] Figure 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, shaft; 301, first sliding sleeve; 302, first slide plate; 303, rubber strip; 304, first spring; 305, extension plate; 306, groove; 307, first motor; 308, motor seat; 4, tapered tube; 401, pressure plate; 402, Side sealing plate; 403, one-way valve; 404, end 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 slide plate; 602, scraper; 603, second spring. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figures 1 to 4 and Figure 8 As shown, the present invention proposes a water quality pretreatment system with intelligent self-cleaning function, including a chassis 1, a water inlet 101 and a water outlet 102 arranged on the chassis 1, and a filter element 103 fixedly installed inside the chassis 1, and also includes a pipe 104 connecting 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 and enters the inside of the filter element 103 through the pipe 104. The sewage is filtered by the filter element 103, and the filtered water is discharged through the water outlet 102.

[0021] The water quality pretreatment system of the present embodiment also includes a driving device, on which are installed 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 on the outer side of the filter element 103. After the isolation cover 2 and the filter element 103 come into contact, a certain space will be formed between the isolation cover 2 and the filter element 103, and the water inside the filter element 103 cannot enter the space, while the space can be filled with the liquid on the outer side of the filter element 103, that is, the existence of this space can make the water on the outer side of the filter element 103 recoil the filter element 103, and then the filter element 103 can be recoiled during the filtering work. Since the water entering the filter element 103 from the outside requires a higher flow rate to effectively recoil the filter element 103, the pressure module can be used to increase the pressure. The water pressure when the filter element 103 is backflushed on the outside of the filter element 103, the driving device drives the isolation cover 2 and the pressurizing module to move in a synchronous circular motion, and the isolation cover 2 can be used to block the inner wall of the filter element 103 in turn through the driving device, so that the space on the filter element 103 that can be backflushed changes gradually on the filter element 103, thereby achieving the effect of cleaning the entire filter element 103, and 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. When the filter element 103 is cleaned, the discharge pipe 201 is placed in a circulation state through the valve assembly. At this time, the water used to backflushed the filter element 103 will be mixed with impurities and discharged to the outside of the chassis 1 through the discharge pipe 201, thereby completing the cleaning of the filter element 103.

[0022] Furthermore, the valve assembly includes a drain pipe 202 fixedly mounted on the chassis 1, the drain pipe 201 is rotatably connected to the chassis 1 and the drain pipe 202 and sealed, a valve 203 is fixedly mounted on the drain pipe 202, the liquid containing impurities entering the drain pipe 201 will enter the drain pipe 202, the sewage can be discharged by opening the valve 203, when the valve 203 is closed, the sewage cannot be discharged, the water outside the filter element 103 cannot effectively pass through the filter element 103 into the isolation cover 2, and the filter element 103 will not be cleaned at this time.

[0023] It is worth noting that good sealing 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 water inside the filter element 103, which will affect the amount of water entering the isolation cover 2 from the outside of the filter element 103, and may even cause the water outside the filter element 103 to be unable to effectively enter the filter element 103, which will reduce the backwash effect on the filter element 103.

[0024] like Figures 6 to 9As shown, the water quality pretreatment system of this embodiment also 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 sets of sealing plates. The sealing module drives the multiple sealing plates to rotate toward 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 sets of sealing plates, the multiple sets of sealing plates are alternately blocked in sequence between the isolation cover 2 and the inner wall of the filter element 103, and at the same time, at least one set 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 isolation cover 2, so that the liquid entering the isolation cover 2 enters the filter element 103 from the outside of the filter element 103, which can form an effective backwashing effect.

[0025] It should be noted that, due to the continuous accumulation of impurities on the inner wall of the filter element 103, a filter cake will be formed, and the filter cake will be higher than the inner wall surface of the filter element 103. Since the isolation cover 2 and the filter element 103 need to always maintain good sealing, and the existing sealing structure generally uses a sealing strip for sealing, if a sealing strip is used for sealing, it is necessary to fix the sealing strip on the edge of the isolation cover in the 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 cake, and the part of the impurities pushed by the sealing structure can never enter the interior 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.

[0026] Further, the sealing module includes a rotating shaft 3 rotatably mounted on the driving device, and the sealing plate includes a first sleeve 301 fixedly mounted on the rotating shaft 3, a first slide plate 302 slidably mounted in the first sleeve 301, a rubber strip 303 fixedly mounted on the first slide plate 302, and a first spring 304 fixedly mounted between the first slide plate 302 and the first sleeve 301. When the rotating shaft 3 rotates, multiple sealing plates will be driven to rotate, and the rotation direction of the sealing plates on the two rotating shafts 3 is from the outside of the isolation cover 2 to the inside of the isolation cover, so that impurities contacting 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 to the outside of the chassis 1 along with the liquid inside the isolation cover 2; Among them, through the sliding setting of the first slide plate 302, the first slide plate 302 can automatically reset to the longest state under the thrust of the first spring 304 when not affected by external force, and as the rotating shaft 3 rotates, the first slide plate 302 will alternately abut against the inner walls of the isolation cover 2 and the filter element 103 in sequence, and the first slide plate 302 after contacting the filter element 103 or the isolation cover 2 will move toward the inside of the first sliding sleeve 301, so that the first slide plate 302 can smoothly pass through the isolation cover 2 and the filter element 103, and the pressure applied to the rubber strip 303 and the first spring 304 on the rubber strip 303 can effectively seal the isolation cover 2 and the filter element 103, and in this embodiment, at least two sealing plates are in contact with the filter element 103 or the isolation cover 2 at the same time, so that double sealing can be performed, even if one of the sealing plates cannot effectively seal the filter element 103, the other sealing plate can also ensure the sealing effect between the filter element 103 and the isolation cover 2.

[0027] Furthermore, 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, and a first motor 307 is installed in the groove 306. Through the design of the groove 306, the space occupied by the first motor 307 during installation can be reduced. The output shaft of the first motor 307 is coaxially fixedly connected to the rotating shaft 3. The rotating shaft 3 can be driven to rotate by the first motor 307, and the rotation direction of the rotating shaft 3 can be controlled. A motor base 308 is fixedly installed on the isolation cover 2, and the first motor 307 is fixedly connected to the motor base 308.

[0028] like Figure 7 As shown, in this embodiment, a second sleeve 6 is fixedly installed in the isolation cover 2, a second slide plate 601 is slidably installed in the second 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 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, the rubber strip 303 is a soft structure, and its scraping effect cannot reach the effect of the scraper 602. Therefore, by arranging the scraper 602 inside the isolation cover 2 and always making the scraper 602 rest against the filter element 103 under the action of the second spring 603, the gap between the scraper 602 and the filter element 103 caused by the wear of the scraper 602 can be effectively compensated.

[0029] like Figure 5 and Figures 9 to 11As shown, in this embodiment, the pressurizing module includes a conical tube 4 fixedly mounted on a driving device, pressure plates 401 are rotatably mounted on both sides of the conical tube 4, a retractable side sealing plate 402 is fixedly mounted on the sides of the two pressure plates 401, a retractable end face sealing plate 404 is fixedly mounted on the upper and lower ends of the two pressure plates 401, and a plurality of one-way valves 403 are fixedly mounted on the side sealing plate 402 to allow the liquid outside the side sealing plate 402 to enter the interior of the pressure plate 401 in one direction. By setting the side sealing plate 402, the end sealing plate 404 and the pressure plate 401, a certain water storage space can be formed between the two pressure plates 401. Due to the setting of the one-way valve 403, the water outside the water storage space can enter the water storage space in one direction. When the two pressure plates 401 are close to 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 high-pressure backwashing on the filter element 103. The flushing pressure of the high-pressure backwashing on the filter element 103 depends on the closing speed of the two pressure plates 401. The faster the closing speed, the better the flushing effect on the filter element 103.

[0030] Furthermore, the pressurizing module also includes a connecting rod 405 fixedly mounted on the side sealing plate 402, 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, and the output shaft of the first push rod motor 409 is fixedly connected to the slider 407, and the slider 407 is driven to reciprocate by the first push rod motor 409, and the transmission of the connecting rod 408 can drive the pressure plates 401 on both sides to perform periodic opening and closing movements. When the plate 401 is opened and closed, the water on the outside will enter between the two pressure plates 401. When the two pressure plates 401 are closed, the water inside the two pressure plates 401 can be sprayed out through the conical tube 4. Since the water inside the two pressure plates 401 is not sprayed out continuously, there will be a certain gap when the filter element 103 is backflushed. The gap can be compensated by installing two sets of pressurizing modules for alternating operation or by increasing the number of turns of the pressurizing module 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 pressure plate 401.

[0031] like Figures 1 to 6As shown, in this embodiment, the driving device includes a second motor 5 fixedly mounted on the chassis 1, a transmission shaft 501 is rotatably mounted in the chassis 1, the output shaft of the second motor 5 is coaxially fixedly connected with the transmission shaft 501, and the transmission shaft 501 can be driven to rotate by the second motor 5, and 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. 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 isolation cover 2 can be separated from the filter element 103 by moving the support rod 502, and at this time, all positions on the filter element 103 can perform filtering operations.

[0032] Furthermore, the driving device also includes a support seat 505 fixedly mounted on the transmission shaft 501, and a base 506 is fixedly mounted on the support seat 505. The base 506 can support the guide rod 406, the first push rod motor 409 and the conical tube 4, and can drive the entire pressurizing module to rotate along the filter element 103 along with the isolation cover 2.

[0033] Among them, a waterproof box 503 is fixedly installed on the transmission shaft 501, and 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 second push rod motor 504 can drive the support rod 502 to move, and the moving support rod 502 will drive the isolation cover 2 to move, and then the second push rod motor 504 can control whether the isolation cover 2 seals the filter element 103.

[0034] In this embodiment, after the isolation cover 2 and the filter element 103 are in contact, a certain space will be formed between the isolation cover 2 and the filter element 103, and the water inside the filter element 103 cannot enter the space, while the space can be filled with the liquid outside the filter element 103, that is, the existence of this space can make the water outside the filter element 103 backwash the filter element 103, and then the filter element 103 can be backwashed during the filtering work. Since the water entering the filter element 103 from the outside requires a higher flow rate to effectively backwash the filter element 103, the water pressure when the filter element 103 is backwashed from the outside of the filter element 103 can be increased by a pressurizing module; By setting up multiple groups of sealing plates, the multiple groups of sealing plates are alternately sealed in turn on the space between the isolation cover 2 and the inner wall of the filter element 103. When the rotating shaft 3 rotates, multiple sealing plates will be driven to rotate, and the rotation direction of the sealing plates on the two rotating shafts 3 is from the outside of the isolation cover 2 to the inside of the isolation cover. In this way, 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 to the outside of the chassis 1 along with the liquid inside the isolation cover 2.

[0035] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations 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, the driving device being mounted with 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), the driving device driving the isolation cover (2) and the pressurizing module to perform synchronous circular motion, a discharge pipe (201) being fixedly mounted at the bottom of the isolation cover (2), and a valve assembly for controlling the blocking of the discharge pipe (201) being mounted on the discharge pipe (201); A sealing module mounted on the isolation cover (2) for sealing a 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 in a direction 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.

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 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).

4. A water quality pretreatment system with intelligent self-cleaning function according to claim 3, characterized in that: Extension plates (305) are provided on both sides of the isolation cover (2). 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). 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).

5. The 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 a single direction.

6. A water quality pretreatment system with intelligent self-cleaning function according to claim 5, 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) being slidably mounted on the guide rod (406), a connecting rod (408) being rotatably mounted between the slider (407) and the connecting rod (405), a first push rod motor (409) being fixedly mounted on the driving device, an output shaft of the first push rod motor (409) being fixedly connected to the slider (407), and a roller (410) being rotatably mounted on the bottom of the side sealing plate (402).

7. A water quality pretreatment system with intelligent self-cleaning function according to claim 6, 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).

8. A water quality pretreatment system with intelligent self-cleaning function according to claim 7, 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).

9. A water quality pretreatment system with intelligent self-cleaning function according to claim 7, 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).

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

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