Diamond back-flushing cleaning grading device and using method thereof

Abstract

The invention provides a diamond back-flushing cleaning grading device and a using method thereof, and relates to the technical field of diamond cleaning. The diamond backflushing and grading device comprises a movable frame, a main body box, a vertical pipe and a plurality of precipitation tanks, the main body box is fixedly arranged at the top of the movable frame, the vertical pipe is arranged in the main body box, the precipitation tanks are also located in the main body box, and the precipitation tanks are all located on the side wall of the vertical pipe; pneumatic butterfly valves are arranged at the bottom of the vertical pipe and the bottoms of the precipitation tanks, a water supply pipe is arranged in the movable frame, a pneumatic ball valve is arranged at the top of the water supply pipe, a plurality of spray heads are arranged on the inner wall of the vertical pipe, the spray heads are arranged in the vertical pipe in a spiral rising mode, and the height of the vertical pipe is larger than that of the precipitation tanks. Through the arrangement of the vertical pipe, the spray head arranged in a spiral rising mode and the multiple precipitation tanks, the diamond can be subjected to grading treatment conveniently after being cleaned, operation is reliable, and maintenance is easy.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of diamond cleaning, and particularly relates to a diamond backflushing cleaning grading device and a use method thereof. BACKGROUND

[0002] Diamond surface cleaning is a key pretreatment step from raw material to terminal application of diamond, because the surface of diamond will adsorb various pollutants such as cutting fluid and abrasive debris during synthesis, processing and storage. In order not to affect the subsequent process steps, cleaning needs to be performed after the cutting and polishing steps.

[0003] Diamond backflushing cleaning refers to physically sputtering and removing pollutants, adsorbents and even weak surface layer carbon atoms on the surface of diamond through momentum transfer, so as to achieve the purpose of cleaning and activating the surface of diamond. Through backflushing cleaning, oil, dust, metal particles and oxides adsorbed on the diamond during processing, storage and transfer can be effectively removed. However, after the diamond is flushed, the staff often needs to grade the diamond. Although the staff is required to wear gloves and other protective measures during the grading process, there is still a great possibility of secondary pollution to the diamond that has been flushed, thereby affecting the subsequent process steps. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a diamond backflushing cleaning grading device and a use method thereof.

[0005] The technical solution adopted to solve the above technical problem is as follows: A diamond backflushing cleaning grading device, comprising a movable frame, a main body box, a vertical pipe and a plurality of sedimentation tanks, the main body box is fixedly arranged on the top of the movable frame, the vertical pipe is arranged in the main body box, and the plurality of sedimentation tanks are also arranged in the main body box, and the plurality of sedimentation tanks are all arranged on the side wall of the vertical pipe. The bottom of the vertical pipe and the bottom of the plurality of sedimentation tanks are both provided with pneumatic butterfly valves, a water supply pipe is arranged in the movable frame, a pneumatic ball valve is arranged on the top of the water supply pipe, a plurality of spray heads are arranged on the inner wall of the vertical pipe, the plurality of spray heads are arranged in a spiral upward arrangement in the vertical pipe, and the height of the vertical pipe is greater than the height of the sedimentation tank. Two guide plates are arranged on the side wall of the main body box, a flow-pushing mechanism for pushing water flow is arranged between the two guide plates, a fine filter plate is arranged on the side wall of the main body box away from the vertical pipe, and a bottom plate is fixedly arranged on the bottom of the fine filter plate.

[0006] Through the above technical solution, the vertical pipe, the spiral upward arranged spray heads and the plurality of sedimentation tanks are arranged, so that the diamond can be graded after being cleaned, the operation is reliable and easy to maintain.

[0007] Further, the mobile frame bottom is fixedly provided with a plurality of universal wheels, and each universal wheel is provided with a brake on the side wall.

[0008] Through the above technical scheme, the universal wheels with brakes can drive the entire cleaning and grading device to different positions, thereby facilitating the cleaning and grading work of the staff, and the setting of the brakes can also make the mobile frame stably stay at the specified position.

[0009] Further, the vertical pipe and the plurality of sediment tanks are made of polypropylene, and the side walls of the two guide plates are in abutment with the side wall of the vertical pipe.

[0010] Through the above technical scheme, polypropylene is corrosion-resistant, so it is suitable for acid and alkali environments. When cleaning diamond rough materials, cleaning agents are needed. In order to prevent the cleaning agents from corroding the vertical pipe and the sediment tank, polypropylene is used.

[0011] Further, the push flow mechanism comprises an impeller, an elongated rod, a movable gear, a drive gear, a servo motor, a connecting plate, an electric push rod, and two fixed rings, the side walls of the two guide plates are fixedly connected with a fixed plate, the fixed plate is inverted "U" shaped, the electric push rod is fixedly connected with the top of the fixed plate, the connecting plate is also inverted "U" shaped, the output end of the electric push rod is fixedly connected with the top of the connecting plate, the two fixed rings are fixedly connected at the side walls of the two ends of the connecting plate, the two fixed rings are rotatably connected at the two ends of the elongated rod, the impeller is fixedly arranged on the side wall of the elongated rod, the movable gear is fixedly connected on the side wall of one end of the elongated rod, the servo motor is fixedly arranged on the side wall of the main body box, the output end of the servo motor is fixedly connected with a linkage rod, the other end of the linkage rod penetrates through the side wall of the main body box and is fixedly connected with the side wall of the drive gear, and the drive gear is engaged with the movable gear.

[0012] Through the above technical scheme, the electric push rod can lower the connecting plate and the impeller to the water flow position, thereby facilitating the rotation of the impeller driven by the servo motor, and strengthening the flow of water in the main body box, so as to facilitate the grading treatment of the rough materials after cleaning.

[0013] Further, the two ends of the elongated rod are fixedly connected with sliding rods, and the side walls of the two ends of the fixed plate are provided with sliding grooves, and the two sliding rods are slidingly connected with the inner walls of the two sliding grooves.

[0014] Through the above technical scheme, the setting of the sliding rods and the sliding grooves makes the lifting of the elongated rod and the impeller more stable, and the sliding rods, the elongated rod and the impeller can rotate in the sliding grooves, so as not to affect the movement of the water flow driven by the impeller.

[0015] Further, the connecting plate side wall is fixedly connected with a curved rod, the curved rod is "L" shaped, the other end of the curved rod is fixedly provided with a coarse filter plate, and the bottom of the coarse filter plate abuts against the top of the bottom plate.

[0016] Through the above technical scheme, when the electric push rod drives the connecting plate and the impeller to descend, the curved rod also synchronously drives the coarse filter plate to descend, thereby preventing the small and coarse materials accidentally driven by the water flow, so as to reduce the loss in the cleaning and grading process.

[0017] Further, the aperture of the coarse filter plate is larger than that of the fine filter plate, and the coarse filter plate is located above a sediment tank farthest from the stand pipe.

[0018] Through the above technical scheme, the coarse filter plate needs to prevent coarse materials, and the fine filter plate needs to collect impurities driven by the water flow, so the aperture of the coarse filter plate needs to be larger, and the coarse materials blocked also need to fall into the sediment tank, so the coarse filter plate needs to be located above the sediment tank.

[0019] Further, the height of the connecting plate is greater than the height of the impeller, and the impeller is located at the middle position of the two fixed rings.

[0020] Through the above technical scheme, the position of the connecting plate is limited by the electric push rod, so the connecting plate can only be lifted and lowered, and the impeller needs to be rotated under the drive of the servo motor, so the position of the connecting plate needs to be set higher so as not to affect the rotation of the impeller.

[0021] Further, the horizontal distance between the curved rod and the coarse filter plate is greater than the width of the impeller, the connecting position of the coarse filter plate and the curved rod is close to the stand pipe, and the position far from the curved rod is close to the fine filter plate.

[0022] Through the above technical scheme, the length of the curved rod also needs to avoid the rotating position of the impeller, and since the coarse filter plate needs to block the coarse materials and block them into the sediment tank, the coarse filter plate needs to be inclined, so as to facilitate the falling of the coarse materials.

[0023] A use method of a diamond backwashing and grading device, comprising the following specific steps: S1, first, coarse materials are put into a stand pipe, and then a pneumatic ball valve is started, and a water supply pipe injects a cleaning agent into the stand pipe; S2, a nozzle is started, and a plurality of nozzles spirally arranged clean the coarse materials in the stand pipe while spirally ascending and conveying the coarse materials to a main body box outside the stand pipe; S3, an electric push rod is started, the output end of the electric push rod drives the connecting plate to move downward, the fixed rings fixed at both ends of the connecting plate drive the extension rods to move downward, and then the movable gear is engaged with the driving gear. S4, start the servo motor, under the driving of the connecting rod, the driving gear will drive the movable gear to rotate, and then make the impeller rotate, the rotating impeller will push the water flow, and the coarse material brought out of the vertical pipe will flow along the direction of the two guide plates; S5, the weight of coarse materials of different sizes is also different, the heavier the coarse material, the closer the distance of movement along the water flow, so that it falls into different sedimentation tanks, and the fine impurities washed out are pushed to the coarse filter plate and the fine filter plate by the water flow.

[0024] The beneficial effects of the present application are as follows: The present application sets up the vertical pipe, the spray head spirally rising and the plurality of sedimentation tanks, so that after cleaning the diamond, the spirally rising water flow will bring the coarse material and impurities into the main box, under the rotation of the impeller, the water flow will flow towards the fine filter plate, and the weight of different coarse materials is different, so that it will fall into different sedimentation tanks, which is convenient for subsequent collection by the workers, and the whole device is reliable in operation and easy to maintain. The present application sets up the impeller and the coarse filter plate, when cleaning and grading the coarse material with smaller particles, the impeller does not need to be started, and the spray head spirally rising is enough to generate the moving water flow, and then drive the coarse material to be graded, when cleaning and grading some coarse material with larger particles, the impeller is needed to further strengthen the power of the water flow, so that the water flow is more urgent, and it is more convenient to drive the coarse material of different sizes into different sedimentation tanks. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the overall structure schematic diagram of the present application; Figure 2 is the top view of the main box in the present application; Figure 3 is the structural connection schematic diagram between the fixed plate and the impeller in the present application; Figure 4 is the structural connection schematic diagram between the connecting plate and the curved rod in the present application; Figure 5 is the sectional view of the main box in the present application; Figure 6 is Figure 5 is the local enlarged view of A in the present application.

[0026] Mark No. : 1, mobile frame; 2, main box; 3, vertical pipe; 4, sediment tank; 5, pneumatic butterfly valve; 6, water supply pipe; 7, pneumatic ball valve; 8, spray head; 9, guide plate; 10, fine filter plate; 11, bottom plate; 12, universal wheel; 13, brake; 14, impeller; 15, extension rod; 16, movable gear; 17, driving gear; 18, servo motor; 19, connecting plate; 20, electric push rod; 21, fixed ring; 22, fixed plate; 23, connecting rod; 24, sliding rod; 25, sliding groove; 26, curved rod; 27, coarse filter plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0028] As shown in the drawings, the diamond recoil cleaning and grading device in the embodiment includes a mobile frame 1, a main box 2, a vertical pipe 3 and a plurality of sediment tanks 4. The main box 2 is fixedly arranged on the top of the mobile frame 1. A plurality of universal wheels 12 are fixedly arranged on the bottom of the mobile frame 1. Each universal wheel 12 is provided with a brake 13 on the side wall. The universal wheel 12 with the brake 13 can drive the entire cleaning and grading device to different positions, thereby facilitating the cleaning and grading work of the staff. In addition, the brake 13 can also make the mobile frame 1 stably stay at the specified position. Figure 1 Figure 6 The vertical pipe 3 is arranged inside the main box 2. The plurality of sediment tanks 4 are also located inside the main box 2. The plurality of sediment tanks 4 are located on the side wall of the vertical pipe 3. The vertical pipe 3 and the plurality of sediment tanks 4 are made of polypropylene material. The side walls of the two guide plates 9 are in abutment with the side wall of the vertical pipe 3. The polypropylene material is corrosion-resistant, so it is suitable for acid and alkali environments. Cleaning agent needs to be used when cleaning the diamond coarse material. In order to prevent the cleaning agent from corroding the vertical pipe 3 and the sediment tank 4, polypropylene material is used.

[0029] The bottom of the vertical pipe 3 and the bottom of the plurality of sediment tanks 4 are provided with pneumatic butterfly valves 5. The inside of the mobile frame 1 is provided with a water supply pipe 6. The top of the water supply pipe 6 is provided with a pneumatic ball valve 7. A plurality of spray heads 8 are arranged on the inner wall of the vertical pipe 3. The plurality of spray heads 8 are arranged in a spiral upward manner inside the vertical pipe 3. The height of the vertical pipe 3 is greater than the height of the sediment tank 4. The spiral upward arranged spray heads 8 will generate spiral upward water flow, thereby making the coarse material falling into the vertical pipe 3 be pushed out of the vertical pipe 3.

[0030] The bottom of the vertical pipe 3 and the bottom of the plurality of sediment tanks 4 are provided with pneumatic butterfly valves 5. The inside of the mobile frame 1 is provided with a water supply pipe 6. The top of the water supply pipe 6 is provided with a pneumatic ball valve 7. A plurality of spray heads 8 are arranged on the inner wall of the vertical pipe 3. The plurality of spray heads 8 are arranged in a spiral upward manner inside the vertical pipe 3. The height of the vertical pipe 3 is greater than the height of the sediment tank 4. The spiral upward arranged spray heads 8 will generate spiral upward water flow, thereby making the coarse material falling into the vertical pipe 3 be pushed out of the vertical pipe 3.

[0031] ​The two guide plates 9 are provided with a water flow pushing mechanism for pushing the water flow, the water flow pushing mechanism comprises an impeller 14, an elongated rod 15, a movable gear 16, a driving gear 17, a servo motor 18, a connecting plate 19, an electric push rod 20 and two fixed rings 21, the two guide plates 9 are fixedly connected with a fixed plate 22, the fixed plate 22 is inverted 'U' shaped, the electric push rod 20 is fixedly connected with the top of the fixed plate 22, the connecting plate 19 is also inverted 'U' shaped, the output end of the electric push rod 20 is fixedly connected with the top of the connecting plate 19, the two fixed rings 21 are fixedly connected with the side walls at the two ends of the connecting plate 19 respectively, the two fixed rings 21 are rotatably connected with the two ends of the elongated rod 15 respectively, the two ends of the elongated rod 15 are fixedly connected with sliding rods 24 respectively, the two ends of the fixed plate 22 are provided with sliding grooves 25, the two sliding rods 24 are slidably connected with the inner walls of the two sliding grooves 25 respectively, the sliding rods 24 and the sliding grooves 25 make the lifting of the elongated rod 15 and the impeller 14 more stable, and the sliding rods 24, the elongated rod 15 and the impeller 14 can rotate in the sliding grooves 25, so the movement of the impeller 14 is not affected.

[0032] The impeller 14 is fixedly arranged on the side wall of the elongated rod 15, the height of the connecting plate 19 is greater than the height of the impeller 14, the impeller 14 is located at the middle position between the two fixed rings 21, the movable gear 16 is fixedly connected with the side wall of one end of the elongated rod 15, the servo motor 18 is fixedly arranged on the side wall of the main body box 2, the output end of the servo motor 18 is fixedly connected with a linkage rod 23, the other end of the linkage rod 23 penetrates through the side wall of the main body box 2 and is fixedly connected with the side wall of the driving gear 17, the driving gear 17 is engaged with the movable gear 16, in the initial state, the movable gear 16 is not engaged with the driving gear 17, only when the connecting plate 19 is lowered by the electric push rod 20, the movable gear 16 is engaged with the driving gear 17.

[0033] The side wall of the connecting plate 19 is fixedly connected with a curved rod 26, the curved rod 26 is 'L' shaped, the other end of the curved rod 26 is fixedly arranged with a coarse filter plate 27, the bottom of the coarse filter plate 27 abuts against the top of the bottom plate 11, when the connecting plate 19 and the impeller 14 are lowered by the electric push rod 20, the curved rod 26 also lowers the coarse filter plate 27 synchronously, so as to prevent the small and coarse materials from being carried by the water flow, thereby reducing the loss in the cleaning and grading process.

[0034] The main body box 2 is provided with a fine filter plate 10 on the side wall away from the stand pipe 3, the bottom of the fine filter plate 10 is fixedly arranged with a bottom plate 11, the aperture of the coarse filter plate 27 is greater than the aperture of the fine filter plate 10, the coarse filter plate 27 is located above the farthest sediment tank 4 from the stand pipe 3, the coarse filter plate 27 needs to prevent the coarse materials, and the fine filter plate 10 needs to collect the impurities carried by the water flow, so the aperture of the coarse filter plate 27 needs to be larger, and the coarse materials blocked also need to fall into the sediment tank 4, so the coarse filter plate 27 needs to be located above the sediment tank 4.

[0035] The horizontal distance between the curved rod 26 and the coarse filter plate 27 is greater than the width of the impeller 14, the coarse filter plate 27 is connected to the curved rod 26 close to the direction of the stand pipe 3, and is away from the curved rod 26 close to the direction of the fine filter plate 10, the length of the curved rod 26 also needs to avoid the rotating position of the impeller 14, and since the coarse filter plate 27 needs to block the coarse material and block it into the sediment tank 4, the coarse filter plate 27 needs to be inclined, so as to facilitate the falling of the coarse material.

[0036] When washing and grading the coarse material with smaller particles, the impeller 14 does not need to be started, and the spray head 8 arranged in the spiral rising is enough to generate a moving water flow, thereby driving the coarse material to be graded, when washing and grading some coarse material with larger particles, the impeller 14 needs to be used to further strengthen the power of the water flow, so that the water flow is more rapid, and it is more convenient to drive different sizes of coarse material into different sediment tanks 4.

[0037] The use method of the diamond backwashing and grading device comprises the following specific steps: S1, first, the coarse material is put into the stand pipe 3, and then the pneumatic ball valve 7 is started, and the water supply pipe 6 injects the cleaning agent into the stand pipe 3; S2, the spray head 8 is started, and the spiral arranged spray heads 8 clean the coarse material in the stand pipe 3 while conveying it to the main body box 2 outside the stand pipe 3 in a spiral rising manner; S3, the electric push rod 20 is started, the output end of the electric push rod 20 drives the connecting plate 19 to move downward, the fixed rings 21 fixed at both ends of the connecting plate 19 drive the extension rods 15 to move downward together, and then the movable gear 16 is engaged with the driving gear 17; S4, the servo motor 18 is started, under the driving of the connecting rod 23, the driving gear 17 drives the movable gear 16 to rotate, and then the impeller 14 rotates, and the rotating impeller 14 pushes the water flow, and the coarse material taken out of the stand pipe 3 flows along the directions of the two guide plates 9; S5, the coarse material of different sizes also has different weights, the larger the coarse material, the heavier the weight, and the closer the distance of movement along the water flow, so as to fall into different sediment tanks 4, and the fine and small impurities washed out are pushed to the coarse filter plate 27 and the fine filter plate 10 by the water flow.

[0038] The above only describes the preferred embodiments of the present application, and is not used to limit the protection scope of the present application.

Claims

1. A diamond recoil cleaning and grading device, comprising a mobile frame (1), a main body box (2), a riser (3) and a plurality of sedimentation tanks (4), characterized in that: The main body box (2) is fixedly arranged on the top of the mobile frame (1), the vertical pipe (3) is arranged inside the main body box (2), and the plurality of sedimentation tanks (4) are also located inside the main body box (2), and the plurality of sedimentation tanks (4) are all located on the side wall of the vertical pipe (3); A pneumatic butterfly valve (5) is provided at the bottom of the vertical pipe (3) and the bottoms of the plurality of sedimentation tanks (4); a water supply pipe (6) is provided inside the mobile frame (1); a pneumatic ball valve (7) is provided on the top of the water supply pipe (6); a plurality of nozzles (8) are installed on the inner wall of the vertical pipe (3); the plurality of nozzles (8) are arranged in a spiral upward manner inside the vertical pipe (3); and the height of the vertical pipe (3) is greater than the height of the sedimentation tank (4); Two guide plates (9) are provided on the side wall of the main box (2), and a flow-pushing mechanism for pushing the water flow is provided between the two guide plates (9). A fine filter plate (10) is provided on the side wall of the main box (2) away from the vertical pipe (3), and a bottom plate (11) is fixedly provided on the bottom of the fine filter plate (10).

2. The diamond recoil cleaning and grading device according to claim 1, characterized in that: A plurality of universal wheels (12) are fixedly provided at the bottom of the movable frame (1), and a brake (13) is provided on the side wall of each universal wheel (12).

3. The diamond recoil cleaning and grading device according to claim 1, characterized in that: The vertical pipe (3) and the plurality of sedimentation tanks (4) are all made of polypropylene, and the side walls of the two guide plates (9) are in contact with the side walls of the vertical pipe (3).

4. The diamond recoil cleaning and grading device according to claim 1, characterized in that: The flow pushing mechanism comprises an impeller (14), an extension rod (15), a movable gear (16), a driving gear (17), a servo motor (18), a connecting plate (19), an electric push rod (20) and two fixing rings (21). The side walls of the two guide plates (9) are fixedly connected with a fixing plate (22). The fixing plate (22) is in an inverted "U" shape. The electric push rod (20) is fixedly connected to the top of the fixing plate (22). The connecting plate (19) is also in an inverted "U" shape. The output end of the electric push rod (20) is fixedly connected to the top of the connecting plate (19). The two fixing rings (21) are fixed respectively. The two fixing rings (21) are connected to the side walls at both ends of the connecting plate (19), and are rotatably connected to the two ends of the extension rod (15). The impeller (14) is fixedly arranged on the side wall of the extension rod (15), and the movable gear (16) is fixedly connected to the side wall of one end of the extension rod (15). The servo motor (18) is fixedly arranged on the side wall of the main body box (2). The output end of the servo motor (18) is fixedly connected to a connecting rod (23). The other end of the connecting rod (23) passes through the side wall of the main body box (2) and is fixedly connected to the side wall of the driving gear (17). The driving gear (17) is meshed with the movable gear (16).

5. The diamond recoil cleaning and grading device according to claim 4, characterized in that: Both ends of the extension rod (15) are fixedly connected to sliding rods (24), and both end side walls of the fixed plate (22) are provided with sliding grooves (25). The two sliding rods (24) are slidably connected to the inner walls of the two sliding grooves (25).

6. The diamond recoil cleaning and grading device according to claim 4, characterized in that: A curved rod (26) is fixedly connected to the side wall of the connecting plate (19), and the curved rod (26) is L-shaped. A coarse filter plate (27) is fixedly provided at the other end of the curved rod (26), and the bottom of the coarse filter plate (27) abuts against the top of the bottom plate (11).

7. The diamond recoil cleaning and grading device according to claim 6, characterized in that: The pore size of the coarse filter plate (27) is larger than the pore size of the fine filter plate (10), and the coarse filter plate (27) is located above a sedimentation tank (4) farthest from the standpipe (3).

8. The diamond recoil cleaning and grading device according to claim 4, characterized in that: The height of the connecting plate (19) is greater than the height of the impeller (14), and the impeller (14) is located in the middle of the two fixing rings (21).

9. The diamond recoil cleaning and grading device according to claim 6, characterized in that: The horizontal distance between the curved rod (26) and the coarse filter plate (27) is greater than the width of the impeller (14); the connection position of the coarse filter plate (27) and the curved rod (26) is close to the direction of the vertical pipe (3), and away from the curved rod (26) and close to the direction of the fine filter plate (10).

10. A method for using a diamond recoil cleaning and grading device, according to claim 6, characterized in that: The specific steps include: S1. First, the coarse material is placed into the vertical pipe (3), and then the pneumatic ball valve (7) is activated, and the water supply pipe (6) injects the cleaning agent into the vertical pipe (3); S2, starting the nozzle (8), and the plurality of nozzles (8) arranged in a spiral manner clean the coarse material in the vertical pipe (3) while the coarse material is transported to the main box (2) outside the vertical pipe (3) by spiral upward movement; S3, start the electric push rod (20), the output end of the electric push rod (20) drives the connecting plate (19) to move downward, the fixed rings (21) fixed at both ends of the connecting plate (19) drive the extension rod (15) to move downward together, and then the movable gear (16) is engaged with the driving gear (17); S4, start the servo motor (18), and under the drive of the connecting rod (23), the driving gear (17) will drive the movable gear (16) to rotate, and then the impeller (14) will rotate. The rotating impeller (14) will push the water flow, and the coarse material brought out of the vertical pipe (3) will flow along the two guide plates (9); S5. Coarse materials of different sizes have different weights. The larger the coarse material, the heavier it is and the closer it moves along the water flow. Therefore, it will fall into different sedimentation tanks (4). The fine impurities washed out are pushed by the water flow to the coarse filter plate (27) and the fine filter plate (10).

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