Efficient automatic pretreatment device for surface water

Abstract

The invention relates to an efficient and automatic pretreatment device for surface water, which belongs to the technical field of water treatment devices and comprises a filter body, a longitudinal moving component is arranged at the top of the filter body, a transverse moving component is arranged on the longitudinal moving component, and a sealing cover component is mounted on the transverse moving component; a cleaning assembly and a submersible pump are mounted in the sealing cover; a filter screen is mounted in the sealing cover; a sealing strip is installed below the sealing cover, and the sealing cover is sleeved with a sealing air bag. The filter tank main body comprises a raw water tank, and a clean water tank is arranged below the raw water tank; a backwashing water channel is arranged on one side of the clean water tank; a partition plate is arranged in the raw water tank; according to the invention, the raw water tank is divided into a plurality of cells, and the cells are sealed and backwashed in cooperation with the movable sealing cover, so that normal filtration of other cells is not affected, and the raw water treatment efficiency is high; the filter screen is arranged to intercept the suspended filter material, so that the filter material layer is prevented from being damaged; the cleaning device is arranged, so that the filter screen is prevented from being blocked, and the sealing performance is ensured through two sealing measures.

Description

Technical Field

[0001] The invention relates to a high-efficiency automatic pretreatment device for surface water, belonging to the technical field of water treatment devices. Background Art

[0002] There are many ways to pre-treat surface water, among which filtration is one of the commonly used ways to treat surface water. Filtration is usually completed in a filter tank, and the most commonly used one at this stage is a rapid filter tank. When the rapid filter tank is working, the valves of the filter tank inlet and clean water branch pipes are opened, and the raw water passes through the filter layer and supporting layer composed of quartz sand, anthracite, garnet and ferromagnetic ore from top to bottom, and is collected through the water distribution branch pipes of the water distribution system, and finally enters the clean water tank through the water distribution main pipe, clean water branch pipe and main pipe; when the effluent water quality does not meet the requirements or the filter layer head loss reaches the maximum value, the filter layer needs to be backwashed. The backwash water passes through the filter layer from bottom to top through the main pipe and branch pipe of the water distribution system, and is evenly distributed on the plane of the filter tank. The filter layer expands and suspends, and the filter layer is cleaned with the help of the shear force of the water flow and the collision friction of the particles, so that the dirt in the filter layer is detached and flows into the drainage trough with the backwash water.

[0003] When the rapid filter is backwashing, the water inlet valve must be closed, and the raw water cannot be filtered any further, resulting in low treatment efficiency. During backwashing, a large amount of backwash water passes through the filter media layer from bottom to top. At this time, the filter media is in a suspended state, and some of the filter media will be discharged along with the backwash water. The filter media layer is damaged, and long-term operation leads to a decrease in treatment efficiency, which cannot meet the pretreatment requirements. Summary of the invention

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is: to provide a high-efficiency automatic pretreatment device for surface water, which can filter raw water while backwashing, has high treatment efficiency, and can effectively prevent the backwashing water from washing away part of the filter material during backwashing, avoid damage to the filter material layer, and ensure the pretreatment effect of surface water.

[0005] The surface water efficient automatic pretreatment device of the present invention comprises a filter tank body, a longitudinal component is slidably arranged on the top of the filter tank body, a transverse component is slidably arranged on the longitudinal component, and a lifting and lowering sealing cover component is installed on the transverse component; the sealing cover component comprises a sealing cover, and a cleaning component and a submersible pump are installed inside the sealing cover; a filter screen is installed inside the sealing cover, and the filter screen is located below the submersible pump. The filter screen is used to intercept the suspended filter material during the backwashing process, and the cleaning component can clean the filter material intercepted by the filter screen to prevent the filter screen from being blocked; a sealing strip is installed below the outer edge of the sealing cover, and a sealing air bag is also sleeved on the sealing cover, and the sealing strip and the sealing air bag are both used to form a seal with the filter tank body;

[0006] The filter tank body comprises a raw water tank, a raw water inlet is provided at one end of the raw water tank, a clean water tank is provided below the raw water tank, a clean water channel is provided at one end of the clean water tank, the clean water tank is connected with the clean water channel, and the clean water channel is provided with a clean water outlet; a backwash channel is provided on one side of the clean water tank, and the backwash channel is provided with a backwash water outlet; a partition is provided in the raw water tank, and the partition divides the raw water tank into a plurality of independent cells, a filter material layer and a supporting layer are laid in sequence from top to bottom in the raw water tank, a filter plate is provided below the supporting layer, a plurality of filter caps are evenly distributed on the filter plate, and the supporting layer is connected with the clean water tank through the filter caps.

[0007] The technical solution of the present invention is to provide a highly efficient automatic pretreatment device for surface water. When the device is working normally, raw water enters the raw water pool from the raw water inlet, passes through the filter material layer, passes through the support layer, falls into the clean water pool through the filter cap, and then enters the clean water channel to be discharged from the clean water outlet; when the filter material layer is blocked and backwashing is required, the longitudinal component and the transverse component work together to move the sealing cover to the top of the cell to be backwashed, the sealing cover descends, the sealing strip contacts and seals with the top of the partition, and at the same time, the air in the sealing airbag contacts with the side walls of the surrounding partitions to form a second seal, so that the cell to be backwashed is The element cell is isolated; at this time, the submersible pump works to extract the water in the sealed cell. As the water in the sealing cover gradually decreases, a negative pressure is formed in the sealing cover. Under the action of negative pressure, the water in the clean water tank enters the sealed cell from bottom to top, flushes the filter material layer in the cell, and washes down the dirt adsorbed and retained on the surface and inside of the filter material, enters the backwash channel with the backwash water, and is discharged from the filter tank through the backwash water outlet, thereby achieving the purpose of cleaning the filter material layer; during backwashing, the suspended filter material is intercepted by the filter screen to prevent the filter material from being discharged together with the backwash water, resulting in damage to the filter material layer.

[0008] Preferably, the longitudinal travel assembly includes a longitudinal travel slide and a crossbeam, the number of the longitudinal travel slides is two sets, and the two sets of longitudinal travel slides are symmetrically connected to the two sides of the crossbeam; the longitudinal travel slide is slidably connected to the filter tank body through a longitudinal travel track; a longitudinal travel drive motor is also installed on the longitudinal travel slide to drive the longitudinal travel assembly to move along the longitudinal travel track.

[0009] Preferably, the transverse assembly includes a transverse slide, a top support wheel is installed on the top of the transverse slide, the top support wheel is movably connected to the transverse track on the crossbeam, and the top support wheel can support the transverse assembly to move on the transverse track; lateral limiting wheels are installed on both sides of the transverse slide, and the lateral limiting wheels are used to limit the lateral position of the transverse assembly; a bottom limiting wheel is installed at the bottom of the transverse slide, and the bottom limiting wheel and the top support wheel cooperate to limit the up and down directions of the transverse assembly;

[0010] A transverse drive motor is installed on the transverse slide, and the transverse drive motor drives the transverse component to move on the crossbeam through a gear rack transmission mechanism; an air pump is also installed on the transverse slide for inflating or exhausting air in the sealed airbag.

[0011] Preferably, the sealing cover assembly is slidably connected to the transverse slide seat via a guide rail slider assembly, and a lifting cylinder is suspended on the transverse slide seat, and the lifting cylinder can drive the sealing cover assembly to move up and down.

[0012] Preferably, the cleaning assembly comprises a rotating cylinder, a cleaning shaft and a cleaning brush, the rotating cylinder is connected to the cleaning shaft through a flange, the rotating cylinder can drive the cleaning shaft to reciprocate within a set angle, a swing rod is installed at the end of the cleaning shaft, pulleys are installed at both ends of the swing rod, and a plurality of holes are opened on both sides of the rod body of the swing rod to reduce the resistance during swinging;

[0013] The cleaning brush is slidably connected to the filter screen through a guide rail slider mechanism. There are two cleaning brushes, and the bristles of the cleaning brush are in contact with the filter screen. A slide groove is provided on the back of the cleaning brush, and the pulleys at both ends of the swing rod move in the slide groove. When the swing rod rotates, the pulley moves in the slide groove, and at the same time drives the cleaning brushes on both sides to run along the guide rail, thereby cleaning the filter material intercepted by the filter screen to prevent the filter material from clogging the filter screen and affecting backwashing.

[0014] Preferably, a connecting elbow is fixed on the top of the sealing cover, the submersible pump is connected to the connecting elbow through a pipeline, and a sealing cover plate is fixed on the connecting elbow.

[0015] Preferably, a moving waterway is installed on the longitudinal moving component, and the moving waterway is fixedly connected to the longitudinal moving slide through brackets at both ends. Rollers are provided at the bottom of the moving waterway, and the rollers are in contact with the top surface of the transverse slide. When the transverse slide moves, the rollers can provide support for the moving waterway.

[0016] Preferably, a plurality of openings are provided on the top of the movable waterway, and when the sealing cover is located directly above the cell, the outlet of the connecting elbow is also located directly above the opening; a closing plate is hinged on the inner side of the opening of the movable waterway, and one side of the closing plate is movably connected to an elastic reset device, and when the closing plate is not subject to pressure, the elastic reset device makes the closing plate close to the movable waterway to close the movable waterway; when the sealing cover moves downward, the connecting elbow pushes open the closing plate to connect the movable waterway with the connecting elbow.

[0017] Preferably, the elastic reset device includes a fixed seat, a connecting shaft is fixed on the fixed seat, a spring is sleeved on the connecting shaft, one end of the spring is welded to the fixed seat, and the other end of the spring is welded to a reset rod, the reset rod passes through the limit seat on the closing plate, and the reset rod is movably connected to the limit seat; when the closing plate is rotated under pressure, the reset rod slides in the hole of the limit seat, and the reset rod rotates at the same time, so that the spring accumulates force, and when the pressure acting on the closing plate disappears, the spring resets the closing plate through the reset rod to close the opening of the moving waterway, so as to prevent the remaining accumulated water in the moving waterway from shaking and splashing when the device moves.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention divides the raw water pool into several independent cells, and cooperates with a sealing cover that can move longitudinally and transversely to seal and backwash a single cell without affecting the normal filtration of other cells, so that the raw water treatment efficiency is high;

[0020] 2. The present invention is provided with a filter screen to intercept the suspended filter material during backwashing, which can effectively prevent the filter material from being discharged along with the backwashing water, thereby avoiding the filter material layer from being damaged; at the same time, a cleaning device is provided under the filter screen to prevent the filter screen from being blocked, thereby ensuring the pretreatment effect of the surface water; the cleaning brush reciprocates and moves in parallel, and has a larger cleaning area than the rotating cleaning, thereby improving the cleaning efficiency;

[0021] 3. The present invention provides a sealing strip and a sealing air bag on the sealing cover, and ensures the sealing performance during backwashing through two sealing measures. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is one of the structural schematic diagrams of the present invention;

[0023] Figure 2 This is the second structural schematic diagram of the present invention;

[0024] Figure 3 It is one of the cross-sectional views of the present invention when it is in the backwashing state;

[0025] Figure 4 This is the second cross-sectional view of the present invention when it is in a backwashing state;

[0026] Figure 5 It is a cross-sectional view of the filter tank body;

[0027] Figure 6 It is one of the structural schematic diagrams of the longitudinal running assembly, the transverse running assembly and the sealing cover assembly;

[0028] Figure 7 This is the second structural schematic diagram of the longitudinal running component, the transverse running component and the sealing cover component;

[0029] Figure 8 It is a schematic diagram of the structure of the longitudinal travel component;

[0030] Fig. 9 It is a schematic diagram of the structure of the horizontal component;

[0031] Fig.10 It is a cross-sectional view of a moving waterway;

[0032] Fig.11 yes Fig.10 Magnified view of area A in the middle;

[0033] Fig.12 is a schematic diagram of the structure of the sealing cover assembly;

[0034] Fig.13 is a cross-sectional view of the sealing cover assembly.

[0035] In the figure: 1. Filter tank body; 11. Raw water tank; 111. Partition plate; 112. Raw water inlet; 113. Filter material layer; 114. Support layer; 115. Filter plate; 12. Clean water channel; 121. Clean water outlet; 13. Backwashing channel; 131. Backwashing water outlet; 14. Clean water tank; 141. Filter cap; 2. Horizontal assembly; 21. Horizontal slide; 22. Horizontal drive motor; 23. Air pump; 24. Top support wheel; 25. Lifting cylinder; 26. Bottom limit wheel; 27. Side limit wheel; 3. Longitudinal assembly ; 31. Moving waterway; 311. Closing plate; 312. Roller; 313. Connecting shaft; 314. Spring; 315. Fixed seat; 316. Reset rod; 317. Limit seat; 32. Longitudinal slide seat; 33. Longitudinal drive motor; 34. Crossbeam; 4. Sealing cover assembly; 41. Sealing cover; 411. Filter screen; 412. Sealing airbag; 413. Sealing strip; 42. Connecting elbow; 421. Sealing cover plate; 43. Swing rod; 44. Cleaning brush; 45. Submersible pump; 46. Cleaning shaft; 47. Rotating cylinder. DETAILED DESCRIPTION

[0036] like Figures 1 to 13 As shown, this embodiment is implemented by the following technical solutions: it includes a filter tank body 1, a longitudinal component 3 is slidably arranged on the top of the filter tank body 1, a transverse component 2 is slidably arranged on the longitudinal component 3, and a liftable sealing cover component 4 is installed on the transverse component 2; the sealing cover component 4 includes a sealing cover 41, and a cleaning component and a submersible pump 45 are installed inside the sealing cover 41; a filter screen 411 is installed in the sealing cover 41, and the filter screen 411 is located below the submersible pump 45. The filter screen 411 is used to intercept the suspended filter material during the backwashing process, and the cleaning component can clean the filter material intercepted by the filter screen 411 to prevent the filter screen from being blocked; a sealing strip 413 is installed below the outer edge of the sealing cover 41, and a sealing airbag 412 is also sleeved on the sealing cover 41, and the sealing strip can form a seal with the top of the partition 111 of the raw water tank, and the sealing airbag 412 can form a seal with the sides of the surrounding partitions after being inflated;

[0037] The filter tank body 1 comprises a raw water tank 11, a raw water inlet 112 is provided at one end of the raw water tank 11, a clean water tank 14 is provided below the raw water tank 11, a clean water channel 12 is provided at one end of the clean water tank 14, the clean water tank 14 is connected to the clean water channel 12, and the clean water channel 12 is provided with a clean water outlet 121; a backwashing channel 13 is provided on one side of the clean water tank 14, and the backwashing channel 13 is provided with a backwashing water outlet 131; a partition 111 is provided in the raw water tank 11, and the partition 111 divides the raw water tank 11 into a plurality of independent A filter material layer 113 and a supporting layer 114 are sequentially laid from top to bottom in the raw water pool 11. The supporting layer 114 is made of gravel with a larger particle size and is used to support the filter material layer 113. A filter plate 115 is provided below the supporting layer 114. The filter plate 115 is a concrete structure. A plurality of filter caps 141 are evenly distributed on the filter plate 115. The supporting layer 114 is connected to the clean water pool 14 through the filter caps 141. The filter caps 141 can prevent small particles of the filter material layer 113 and the supporting layer 114 from entering the clean water pool 14.

[0038] In this embodiment, the longitudinal travel component 3 includes a longitudinal travel slide 32 and a crossbeam 34. There are two sets of longitudinal travel slides 32, and the two sets of longitudinal travel slides are symmetrically connected to the two sides of the crossbeam 34; the longitudinal travel slide 32 is slidably connected to the filter tank body 1 through a longitudinal travel track; a longitudinal travel drive motor 33 is also installed on the longitudinal travel slide 32 to drive the longitudinal travel component 3 to move along the longitudinal travel track.

[0039] The transverse component 2 includes a transverse slide 21, and a top support wheel 24 is installed on the top of the transverse slide 21. The top support wheel 24 is movably connected to the transverse track on the crossbeam 34, and the top support wheel 24 can support the transverse component 2 to move on the transverse track; side limit wheels 27 are installed on both sides of the transverse slide 21, and the side limit wheels 27 are used to limit the side position of the transverse component 2; a bottom limit wheel 26 is installed at the bottom of the transverse slide 21, and the bottom limit wheel 26 and the top support wheel 24 cooperate to limit the up and down directions of the transverse component 2; a transverse drive motor 22 is installed on the transverse slide 21, and the transverse drive motor 22 drives the transverse component 2 to move on the crossbeam 34 through a gear rack transmission mechanism; an air pump 23 is also installed on the transverse slide 21, which is used to inflate or exhaust the sealed airbag 412. The sealing cover assembly 4 is slidably connected to the transverse slide 21 through a guide rail slider assembly. A lifting cylinder 25 is suspended on the transverse slide 21, and the lifting cylinder 25 can drive the sealing cover assembly 4 to move up and down.

[0040] The cleaning assembly includes a rotary cylinder 47, a cleaning shaft 46 and a cleaning brush 44. The rotary cylinder 47 is connected to the cleaning shaft 46 through a flange. The rotary cylinder 47 can drive the cleaning shaft 46 to reciprocate within a set angle. A swing rod 43 is installed at the end of the cleaning shaft 46. Pulleys are installed at both ends of the swing rod 43. A plurality of holes are opened on both sides of the rod body of the swing rod 43 to reduce the resistance during swinging. The cleaning brush 44 is slidably connected to the filter screen 411 through a guide rail slider mechanism. The cleaning brush 44 There are two pieces in number, and the bristles of the cleaning brush 44 are in contact with the filter screen 411; a slide groove is provided on the back of the cleaning brush 44, and the pulleys at both ends of the swing rod 43 move in the slide groove; when the swing rod 43 rotates, the pulley moves in the slide groove, and at the same time drives the cleaning brushes on both sides to move along the guide rail, thereby cleaning the filter material intercepted by the filter screen 411 to prevent the filter material from clogging the filter screen and affecting backwashing; the reciprocating parallel movement mode of the cleaning brush 44 has a larger cleaning area than the rotary cleaning mode, so as to improve the cleaning efficiency.

[0041] A connecting elbow 42 is fixed on the top of the sealing cover 41, and the submersible pump 45 is connected to the connecting elbow 42 through a pipeline. A sealing cover plate 421 is fixed on the connecting elbow 42; a movable waterway 31 is installed on the longitudinal component 3, and the movable waterway 31 is fixedly connected to the longitudinal slide 32 through brackets at both ends. A roller 312 is provided at the bottom of the movable waterway 31, and the roller 312 is in contact with the top surface of the transverse slide 21. When the transverse slide 21 moves, the roller 312 can provide support for the movable waterway 31.

[0042] The movable waterway 31 is provided with a plurality of openings at the top. When the sealing cover 41 is located directly above the unit cell, the outlet of the connecting elbow 42 is also located directly above the opening. A closing plate 311 is hingedly connected to the inner side of the opening of the movable waterway 31. One side of the closing plate 311 is movably connected to an elastic reset device. When the closing plate 311 is not subjected to pressure, the elastic reset device makes the closing plate 311 close to the movable waterway 31 to close the movable waterway 31. When the sealing cover 41 moves downward, the connecting elbow 42 pushes the closing plate 311 open, so that the movable waterway 31 is connected to the connecting elbow 42. An inclined plate is also provided inside the movable waterway 31 to facilitate the discharge of backwash water. One end of the movable waterway 31 is connected to the backwash channel 13 through a pipeline.

[0043] The elastic reset device includes a fixing seat 315, on which a connecting shaft 313 is fixed, and a spring 314 is sleeved on the connecting shaft 313. One end of the spring 314 is welded to the fixing seat 315, and the other end of the spring 314 is welded to a reset rod 316. The reset rod 316 passes through a limit seat 317 on the closing plate 311, and the reset rod 316 is movably connected to the limit seat 317. When the closing plate 311 is rotated under pressure, the reset rod 316 slides in the hole of the limit seat 317, and the reset rod 316 rotates at the same time, so that the spring 314 accumulates force. When the pressure acting on the closing plate 311 disappears, the spring 314 resets the closing plate 311 through the reset rod 316, and closes the opening of the movable waterway 31, so as to prevent the remaining accumulated water in the movable waterway 31 from shaking and splashing when the device moves.

[0044] The working process of the present invention is:

[0045] Under normal filtering conditions, raw water enters the raw water pool 11 from the raw water inlet 112, is filtered by the filter material layer 113, passes through the support layer 114, falls into the clean water pool 14 through the filter cap 141, and then enters the clean water channel 12, and is discharged from the clean water outlet 121;

[0046] When the filter material layer 113 is clogged and backwashing is required, the longitudinal component 3 and the transverse component 2 work together to move the sealing cover 41 to the top of the cell to be backwashed, the sealing cover 41 descends, the sealing strip 413 contacts and seals with the top of the partition 111, and at the same time, the air pump 23 inflates the sealing airbag 412 to expand it, and the sealing airbag 412 contacts the side walls of the surrounding partitions to form a second seal, thereby avoiding poor sealing due to the uneven top of the partition 111. At this time, the cell to be backwashed is isolated;

[0047] At the same time, the connecting elbow 42 pushes open the closing plate 311 at the opening of the mobile waterway 31, and temporarily seals it through the sealing cover plate 421 to prevent the backwashing water from splashing out; then the submersible pump 45 works to extract the water in the sealed cells. As the water in the sealing cover 41 gradually decreases, a negative pressure is formed in the sealing cover 41. Under the action of the negative pressure, the water in the clean water tank 14 enters the sealed cells from bottom to top, flushes the filter material layer 113 in the cells, and washes down the dirt adsorbed and trapped on the surface and inside of the filter material, enters the mobile waterway 31 with the backwashing water, and then enters the backwashing channel 13, and is discharged from the filter tank through the backwashing water outlet 131, thereby achieving the purpose of cleaning the filter material layer; during backwashing, the suspended filter material is intercepted by the filter screen 411 to prevent the filter material from being discharged together with the backwashing water, resulting in defects in the filter material layer; the filter material intercepted by the filter screen 411 is continuously cleaned by the cleaning brush 44 to prevent the filter screen 411 from being blocked and affecting the backwashing effect.

[0048] The motor, cylinder and air pump in the present invention are all automatically controlled by a control system.

Claims

1. A highly efficient automatic pretreatment device for surface water, characterized in that: The invention comprises a filter tank body (1), a longitudinal component (3) is slidably arranged on the top of the filter tank body (1), a transverse component (2) is slidably arranged on the longitudinal component (3), and a lifting and lowering sealing cover component (4) is installed on the transverse component (2); the sealing cover component (4) comprises a sealing cover (41), and a cleaning component and a submersible pump (45) are installed inside the sealing cover (41); a filter screen (411) is installed inside the sealing cover (41), and the filter screen (411) is located below the submersible pump (45); a sealing strip (413) is installed below the outer edge of the sealing cover (41), and a sealing air bag (412) is also sleeved on the sealing cover (41); The filter tank body (1) comprises a raw water tank (11), one end of the raw water tank (11) is provided with a raw water inlet (112), a clean water tank (14) is provided below the raw water tank (11), one end of the clean water tank (14) is provided with a clean water channel (12), the clean water tank (14) is connected to the clean water channel (12), and the clean water channel (12) is provided with a clean water outlet (121); a backwashing channel (13) is provided on one side of the clean water tank (14), and the backwashing channel (13) is provided with a backwashing water outlet (131); A partition (111) is provided in the raw water pool (11), and the partition (111) divides the raw water pool into a plurality of independent cells. A filter material layer (113) and a supporting layer (114) are laid in the raw water pool (11) from top to bottom. A filter plate (115) is provided below the supporting layer (114), and a plurality of filter caps (141) are evenly distributed on the filter plate (115). The supporting layer (114) is connected to the clean water pool (14) through the filter caps (141).

2. The surface water efficient automatic pretreatment device according to claim 1, characterized in that: The longitudinal travel assembly (3) comprises a longitudinal travel slide (32) and a crossbeam (34). The longitudinal travel slides (32) are provided in two sets, and the two sets of longitudinal travel slides are symmetrically connected to the two sides of the crossbeam (34). The longitudinal travel slide (32) is slidably connected to the filter tank body (1) via a longitudinal travel track. A longitudinal travel drive motor (33) is also installed on the longitudinal travel slide (32).

3. The surface water efficient automatic pretreatment device according to claim 2 is characterized in that: The transverse assembly (2) comprises a transverse slide (21), a top support wheel (24) is installed on the top of the transverse slide (21), and the top support wheel (24) is movably connected to the transverse track on the crossbeam (34); side limit wheels (27) are installed on both sides of the transverse slide (21), and a bottom limit wheel (26) is installed on the bottom of the transverse slide (21), and the bottom limit wheel (26) and the top support wheel (24) cooperate to limit the vertical direction of the transverse assembly (2); a transverse drive motor (22) is installed on the transverse slide (21), and the transverse drive motor (22) drives the transverse assembly (2) to move on the crossbeam (34) through a gear rack transmission mechanism; and an air pump (23) for inflating or exhausting air into the sealing airbag (412) is also installed on the transverse slide (21).

4. The surface water efficient automatic pretreatment device according to claim 3 is characterized in that: The sealing cover assembly (4) is slidably connected to the transverse slide seat (21) via a guide rail slider assembly, and a lifting cylinder (25) is suspended on the transverse slide seat (21).

5. The surface water efficient automatic pretreatment device according to claim 1, characterized in that: The cleaning assembly comprises a rotating cylinder (47), a cleaning shaft (46) and a cleaning brush (44); the rotating cylinder (47) is connected to the cleaning shaft (46) via a flange; a swing rod (43) is installed at the end of the cleaning shaft (46); pulleys are installed at both ends of the swing rod (43); and a plurality of holes are opened on both sides of the rod body of the swing rod (43); The cleaning brush (44) is slidably connected to the filter (411) via a guide rail slider mechanism. There are two cleaning brushes (44), and the bristles of the cleaning brush (44) are in contact with the filter (411). A slide groove is provided on the back of the cleaning brush (44), and the pulleys at both ends of the swing rod (43) move in the slide groove.

6. The surface water efficient automatic pretreatment device according to claim 3, characterized in that: A connecting elbow (42) is fixed on the top of the sealing cover (41), the submersible pump (45) is connected to the connecting elbow (42) through a pipeline, and a sealing cover plate (421) is fixed on the connecting elbow (42).

7. The surface water efficient automatic pretreatment device according to claim 6, characterized in that: The longitudinal moving assembly (3) is provided with a moving waterway (31), which is fixedly connected to the longitudinal moving slide (32) through brackets at both ends, and a roller (312) is provided at the bottom of the moving waterway (31), and the roller (312) contacts the top surface of the transverse moving slide (21).

8. The surface water efficient automatic pretreatment device according to claim 7, characterized in that: The top of the moving waterway (31) is provided with a plurality of openings, and when the sealing cover (41) is located directly above the unit cell, the outlet of the connecting elbow (42) is also located directly above the openings; A closing plate (311) is hingedly connected to the inner side of the opening of the movable waterway (31), and one side of the closing plate (311) is movably connected to an elastic reset device.

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