Water sand separation device

The water-sand separation device, with its two-stage filtration structure and drive mechanism, solves the problem of separating water and sand mixtures, enabling the effective recycling of water and sand, reducing resource waste and environmental pollution, and improving production efficiency.

CN224331712UActive Publication Date: 2026-06-09GUANGDONG EVERWIN PRECISION TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG EVERWIN PRECISION TECH CO LTD
Filing Date
2025-05-28
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing methods for effectively separating water-sand mixtures lead to unstable recycling quality, affecting the recycling effect. Furthermore, the discharge of untreated mixtures causes environmental pollution and resource waste.

Method used

It adopts a two-stage filtration structure and drive mechanism, including a primary filtration structure and a secondary filtration structure. Combined with the drive mechanism to drive the drum to rotate, it accelerates the water and sand separation process and ensures the effective separation of water and sand.

Benefits of technology

It achieves efficient water and sand separation, ensures the recycling of water and sand, reduces resource waste and environmental pollution, and improves production efficiency and environmental benefits.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224331712U_ABST
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Abstract

This utility model discloses a water-sand separation device, including a water-sand tank. The water-sand tank contains a primary filtration structure and a secondary filtration structure. The primary filtration structure carries and initially filters the water-sand mixture. The secondary filtration structure receives the water-sand mixture filtered by the primary filtration structure. The secondary filtration structure is connected to a driving mechanism to accelerate water-sand separation under the drive of the driving mechanism, keeping sand particles within the secondary filtration structure and allowing water to flow into the water-sand tank. This utility model achieves efficient water-sand separation through a two-stage filtration structure and a driving mechanism. The device features resource recycling; the separated water flows into a water tank and can be reused in a high-pressure water deburring mechanism. Sand particles are fed into the water-sand deburring mechanism via a conveying pipe for recycling, saving resources and reducing costs. A water spray component periodically sprays water to prevent clogging of the secondary filter screen and the roller barrel's through-holes, ensuring stable filtration performance.
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Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a water-sand separation device. Background Technology

[0002] In modern industrial production, many processed products require surface burrs, impurities, or surface roughening treatment through high-pressure water jetting or sandblasting. Water-sand mixtures are widely used in these processes due to their high cleaning efficiency and low dust pollution. However, used water-sand mixtures typically contain a large amount of impurities, making direct recycling difficult. Current treatment methods mostly involve direct discharge of the mixture or simple sedimentation followed by recovery, but these methods have several problems: firstly, water and sand cannot be completely separated, resulting in unstable quality of the recovered mixture and affecting subsequent recycling; secondly, the discharge of inadequately treated mixtures pollutes the environment while wasting significant amounts of water and sand resources. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a water-sand separation device that can effectively separate water and sand, and both water and sand can be recycled.

[0004] To solve the above-mentioned technical problems, the present invention provides a water-sand separation device, including a water-sand tank. The water-sand tank is equipped with a primary filtration structure and a secondary filtration structure. The primary filtration structure is used to carry and initially filter the water-sand mixture. The secondary filtration structure is located at the output end of the primary filtration structure to receive the water-sand mixture filtered by the primary filtration structure. The secondary filtration structure is connected to a driving mechanism to accelerate water-sand separation under the drive of the driving mechanism, so that the sand particles are retained in the secondary filtration structure and the water flows into the water-sand tank.

[0005] Furthermore, the primary filtration structure includes a filter bucket, which is used to filter out burrs mixed in with the water and sand mixture.

[0006] The secondary filtration structure includes a roller and a second filter screen arranged around the roller. The roller has several through holes on its peripheral wall. The output end of the drive mechanism is connected to the roller to drive the roller to rotate or vibrate.

[0007] Furthermore, the secondary filtration structure also includes a frame, with the roller mounted on the outer periphery of the frame, and the second filter screen disposed between the roller and the frame.

[0008] Furthermore, the frame includes a bottom frame, a top frame coaxially arranged with the bottom frame, and a plurality of connecting rods connected between the bottom frames. The plurality of connecting rods are distributed circumferentially around the frame, and each connecting rod is axially connected between the bottom frame and the top frame along the bottom frame and the top frame.

[0009] Furthermore, an annular groove is provided on the side of the top frame facing the bottom frame, and the inner diameter of the annular groove matches the outer diameter of the roller so that the roller can be locked inside.

[0010] Furthermore, it also includes a support frame installed in the water tank. The support frame includes a base plate, a first side plate, and a second side plate. The base plate is horizontally installed at the bottom of the sand tank. The first side plate and the second side plate are vertically installed at opposite ends of the base plate. The roller is installed between the first side plate and the second side plate. The drive mechanism is installed on the first side plate, and the filter bucket is installed on the second side plate.

[0011] Furthermore, the driving mechanism includes a cylinder, a gear, and a rack. The gear is fixedly disposed at the bottom of the drum, the rack is disposed on the first side plate and meshes with the gear, the cylinder is disposed on the first side plate at a position corresponding to the rack, and the output shaft of the cylinder is fixedly connected to the rack to drive the rack to reciprocate.

[0012] Furthermore, a support wheel is rotatably mounted on the second side plate. The support wheel is frustum-shaped, and its inclined wall contacts the inclined drum to support the drum. The support wheel rotates as the drum rotates.

[0013] Furthermore, a connecting plate is installed on the side of the second side plate facing the drum. The connecting plate can be adjusted in height relative to the second side plate. The support wheel is installed on the second side plate. A rotating plate with damping is provided on the first side plate. The cylinder and the rack are installed on the rotating plate. The connecting plate cooperates with the rotating plate to adjust the tilt angle of the drum.

[0014] Furthermore, it also includes a water spraying assembly disposed within the sand tank. The water spraying assembly includes a water pipe, a water pump, and several nozzles. The water pipe and the water pump are both disposed on the inner wall of the sand tank, and the water inlet end of the water pipe is located inside the sand tank. The several nozzles are disposed at the water outlet end of the water pipe, and the several nozzles are all facing the roller.

[0015] This utility model's water-sand separation device has at least the following beneficial effects: High-efficiency water-sand separation is achieved through a two-stage filtration structure and drive mechanism. The first-stage filtration structure removes large particles such as burrs from the water-sand mixture, while the second-stage filtration structure further separates water and sand particles. The drive mechanism rotates the drum to accelerate the separation speed and improve efficiency. The device features resource recycling; the separated water flows into a water tank and can be reused in the high-pressure water deburring mechanism; sand particles are recycled through a conveying pipe into the water-sand deburring mechanism, saving resources and reducing costs. The water spray component periodically sprays water to prevent clogging of the second filter screen and the drum's through-holes, ensuring stable filtration performance. The frame provides stable support for the drum and second filter screen, and the connecting plate and rotating plate work together to adjust the drum's tilt angle to adapt to different working requirements. The first filter screen inside the filter bucket is replaceable, ensuring long-term stable filtration performance. The overall structural design is reasonable, facilitating maintenance and operation; the device has significant environmental benefits, reducing pollution from untreated water-sand mixtures and meeting modern industrial environmental protection and resource conservation requirements. The design's continuous working capacity and reduced downtime improve production efficiency. Applicable to various industrial scenarios, this invention has wide applicability. In summary, the water-sand separation device of this invention improves separation efficiency and effect, realizes resource recycling, and has significant economic and environmental benefits. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the water-sand separation device of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the water-sand tank in one embodiment of the water-sand separation device of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the water-sand tank in one embodiment of the water-sand separation device of this utility model;

[0020] Figure 4 This is a schematic diagram of the primary filtration structure, secondary filtration structure, and support structure in one embodiment of the water-sand separation device of this utility model. Figure 1 ;

[0021] Figure 5 This is a schematic diagram of the primary filtration structure, secondary filtration structure, and support structure in one embodiment of the water-sand separation device of this utility model. Figure 2 ;

[0022] Figure 6This is a schematic diagram of the structure of the roller and frame in one embodiment of the water-sand separation device of this utility model;

[0023] Figure 7 This is a schematic diagram of the frame structure in one embodiment of the water-sand separation device of this utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the water tank, partition, and third filter screen in one embodiment of the water-sand separation device of this utility model.

[0025] Figure 9 This is a schematic diagram of the structure of the first nozzle in one embodiment of the water-sand separation device of this utility model;

[0026] Figure 10 This is a schematic cross-sectional view of the first nozzle in one embodiment of the water-sand separation device of this utility model.

[0027] Figure 11 This is a schematic diagram of the structure of the second nozzle in one embodiment of the water-sand separation device of this utility model;

[0028] Figure 12 This is a schematic cross-sectional view of the second nozzle in one embodiment of the water-sand separation device of this utility model.

[0029] Figure 13 This is a schematic diagram of the water and sand transport routes in one embodiment of the water-sand separation device of this utility model.

[0030] The meanings of the labels in the attached diagram are as follows:

[0031] Water tank 1, partition 11, third filter screen 12;

[0032] 2. Sand box; 21. Primary filter structure; 211. Filter bucket; 212. First filter screen; 22. Secondary filter structure; 221. Roller; 222. Second filter screen; 223. Frame; 2231. Bottom frame; 2232. Top frame; 2232. Connecting rod; 2233. Ring groove; 224. Bolt; 225. Drive mechanism; 23. Cylinder; 231. Gear; 232. Rack; 233. Bracket; 24. Base plate; 241. First side plate; 242. Second side plate; 243. Rotating plate; 244. Connecting plate; 245. Adjustment hole; 246. Adjustment bolt; 247. Support wheel; 248. Delivery pipe; 25. Water spray assembly; 26. Water pipe; 261. Third nozzle; 262.

[0033] High-pressure water deburring mechanism 3, first nozzle 31, first cavity 311, first nozzle 312, first water inlet channel 313, first water outlet channel 314, air inlet channel 315;

[0034] Water-sand deburring mechanism 4, second nozzle 41, second cavity 411, second nozzle 412, second water inlet channel 413, second water outlet channel 414, sand inlet channel 415;

[0035] Control Panel 5. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] Please refer to Figure 1 The water-sand separation device of this utility model includes a water tank 1, a water-sand tank 2, and a primary filtration structure 21 and a secondary filtration structure 22 disposed within the water-sand tank 2. The primary filtration structure 21 is used to carry and initially filter the water-sand mixture. The secondary filtration structure 22 is disposed at the output end of the primary filtration structure 21 to receive the water-sand mixture filtered by the primary filtration structure 21. The secondary filtration structure 22 is connected to a drive mechanism 23 to accelerate water-sand separation under the drive of the drive mechanism 23, keeping the sand particles within the secondary filtration structure 22, and allowing the water to flow into the water-sand tank 2 and then back into the water tank 1. The water and sand particles separated from the water-sand tank 2 are respectively fed into a high-pressure water deburring mechanism 3 for deburring workpieces and the water-sand deburring mechanism 4 for recycling.

[0038] Please refer to Figure 2 The primary filtration structure 21 includes a filter bucket 211, which receives the burrs and water-sand mixture generated by the high-pressure water deburring mechanism 3 and the water-sand deburring mechanism 4. The upper end of the filter bucket 211 extends through the upper wall of the water-sand box 2 to facilitate the collection of the burr and water-sand mixture. A first filter screen 212 for filtering burrs is provided inside the filter bucket 211. The outer diameter of the first filter screen 212 matches the inner diameter of the filter bucket 211 to be securely fitted inside. The first filter screen 212 is replaceable to ensure the filtration effect of the filter bucket 211. The lower end of the filter bucket 211 extends downwards and into the secondary filtration structure 22, allowing the water-sand mixture, after burr removal, to flow downwards into the secondary filtration structure 22.

[0039] Please refer to Figures 3 to 7The secondary filtration structure 22 includes a roller 221, a second filter screen 222 annularly arranged within the roller 221, and a frame 223. The frame 223 includes a bottom frame 2231, a top frame 2232 coaxially arranged with the bottom frame 2231, and a plurality of connecting rods 2233 connecting the bottom frames 2231. The inner diameter of the top frame 2232 matches the inner diameter of the bottom frame 2231. The plurality of connecting rods 2233 are axially connected between the inner walls of the bottom frame 2231 and the top frame 2232, and are evenly spaced around the circumference of the frame 223. The outer diameter of the bottom frame 2231 is smaller than the outer diameter of the top frame 2232, and the top frame 2232 has an annular groove 224 on the side facing the bottom frame 2231. The roller 221 has a plurality of through holes. The roller 221 is fitted onto the outer periphery of the frame 223, and the inner diameter of the annular groove 224 matches the outer diameter of the roller 221 for the roller 221 to be fitted inside. The second filter screen 222 is fitted between the roller 221 and the frame 223, that is, the diameter of the second filter screen 222 matches both the inner diameter of the roller 221 and the inner diameter of the annular groove 224. Both the top frame 2232 and the bottom frame 2231 have screw holes, and each screw hole has a bolt 225 screwed into it. Rotating the bolt 225 can tighten it against the roller 221 and the second filter screen 222, making the connection between the roller 221, the second filter screen 222, and the frame 223 more stable.

[0040] The water-sand tank 2 is equipped with a bracket 24 for mounting the primary filtration structure 21, the secondary filtration structure 22, and the drive mechanism 23. Specifically, the bracket 24 includes a base plate 241, a first side plate 242, and a second side plate 243. The base plate 241 is horizontally disposed at the bottom of the water tank 1, and the first side plate 242 and the second side plate 243 are vertically disposed at opposite ends of the base plate 241. The drive mechanism 23 is disposed on the first side plate 242, the filter bucket 211 is disposed on the second side plate 243, the opening of the roller 221 faces the filter bucket 211, and the roller 221 is inclined from top to bottom from near the filter bucket 211 to away from the filter bucket 211. The roller 221 is provided with a conveying pipe 25. One end of the conveying pipe 25 extends into the bottom of the roller 221 to extract sand particles from the bottom of the roller 221. The other end of the conveying pipe 25 is connected to the water sand deburring mechanism 4 to convey sand particles to the water sand deburring mechanism 4.

[0041] The drive mechanism 23 includes a cylinder 231, a gear 232, and a rack 233. The gear 232 is fixedly mounted on the bottom of the drum 221. A rotating plate 244 is provided on the first side plate 242 for damping rotation. The cylinder 231 is fixedly mounted on the side of the rotating plate 244 facing the drum 221. The rack 233 is slidably mounted on the rotating plate 244, and one end of the rack 233 is fixedly connected to the output shaft of the cylinder 231. At the same time, the rack 233 meshes with the gear 232. A connecting plate 245 is mounted on the side of the second side plate 243 facing the drum 221. An adjustment hole 246 is provided between the connecting plate 245 and the second side plate 243. Several vertically arranged adjustment holes 246 are present on the connecting plate 245. An adjustment bolt 247 is provided between the adjustment holes 246 of the connecting plate 245 and the adjustment holes 246 of the second side plate 243. The height of the connecting plate 245 can be adjusted by the cooperation of the adjustment holes 246 and the adjustment bolt 247. A support wheel 248 for supporting the drum 221 is rotatably mounted on the connecting plate 245. The support wheel 248 is frustum-shaped, and its inclined wall contacts the inclined drum 221 to support it. The support wheel 248 rotates as the drum 221 rotates. The connecting plate 245 cooperates with the rotating plate 244 to adjust the tilt angle of the drum 221.

[0042] The sand tank 2 is also equipped with a water spray assembly 26 to prevent the second filter screen 222 and the several through holes from becoming clogged. The water spray assembly 26 includes a water pipe 261, a water pump, and several third nozzles 262. The water pipe 261 and the water pump are both located on the inner wall of the sand tank 2, with the inlet end of the water pipe 261 located inside the sand tank 2. The several third nozzles 262 are located at the outlet end of the water pipe 261, and all of the several third nozzles 262 face the roller 221. The water pump can draw water from the sand tank 2 to the water pipe 261 and spray it from the several third nozzles 262. This outward spraying can prevent the second filter screen 222 and the several through holes from becoming clogged, ensuring the filtration effect of the second filter screen 222.

[0043] Please refer to Figure 8The sand tank 2 is connected to the water tank 1. Water filtered by the primary filtration structure 21 and the secondary filtration structure 22 flows into the water tank 1 through the sand tank 2. The water tank 1 is equipped with several partitions 11, which divide the interior space of the water tank 1 into several sub-spaces. These sub-spaces are arranged along the water flow direction within the water tank 1. Each partition 11 is equipped with a third filter screen 12 to filter out any impurities that may remain in the water. The water tank 1 is connected to both the high-pressure water deburring mechanism 3 and the sand deburring mechanism 4, supplying water to both mechanisms.

[0044] The high-pressure water deburring mechanism 3 includes a first high-pressure pump and a plurality of first nozzles 31. The inlet of the first high-pressure pump is connected to the interior of the water tank 1 to draw water from the tank, and the outlet of the first high-pressure pump is connected to each of the first nozzles 31 to spray high-pressure water. Please refer to... Figure 9 and Figure 10 Each of the first nozzles 31 includes a first cavity 311 and a first nozzle 312. The first cavity 311 has a first water inlet channel 313, a first water outlet channel 314 communicating with the first nozzle 312, and an air inlet channel 315 communicating with the first water outlet channel 314. Pressurized water enters the first cavity 311 through the first water inlet channel 313 and creates a negative pressure inside the first cavity 311. Under the influence of the negative pressure, air enters the first cavity 311 through the air inlet channel 315 and enters the first nozzle 312 together with the pressurized water to form cavitation bubble water.

[0045] The water-sand deburring mechanism 4 includes a second high-pressure pump and several second nozzles 41. The inlet of the second high-pressure pump is connected to the inside of the water tank 1 to draw water from the tank, and the outlet of the second high-pressure pump is connected to several second nozzles 41 to spray high-pressure water. Please refer to... Figure 11 and Figure 12 Each of the second nozzles 41 includes a second cavity 411 and a second nozzle 412. The second cavity 411 has a second water inlet channel 413, a second water outlet channel 414 communicating with the second nozzle 412, and a sand inlet channel 415 communicating with the second water outlet channel 414. The other end of the sand inlet channel 415 is connected to the delivery pipe 25. Pressurized water enters the second cavity 411 through the second water inlet channel 413, creating a negative pressure inside the second cavity 411. Under the influence of the negative pressure, sand particles enter the second cavity 411 through the sand inlet channel 415 and enter the second nozzle 412 together with the pressurized water to form a water-sand mixture.

[0046] The water-sand separation device also includes a control panel 5, which is signal-connected to the cylinder 231, the water pump, the first high-pressure pump, and the second high-pressure pump. The user can control the operating status of the above equipment through the control panel 5.

[0047] One embodiment of the water-sand separation device of this utility model operates as follows: First, water is filled into the water tank 1, and sand particles are placed in the roller 221. The device is then activated, and the water in the water tank 1 is pumped towards the first nozzle 31 and the second nozzle 41. The sand particles in the roller 221 are pumped towards the sand inlet channel 415 of the second nozzle 41. Thus, the first nozzle 31 sprays high-pressure water onto the workpiece to coarsely remove burrs, and the second nozzle 41 sprays a sand-water mixture onto the workpiece to finely remove burrs.

[0048] Please refer to Figure 13 During the burr removal process, a mixture of burrs, water, and sand particles falls into the filter hopper 211. The burrs are filtered by the first filter screen 212 and remain in the filter hopper 211. The water and sand mixture flows into the roller drum 221 through the lower port of the filter hopper 211. The water flows out through the second filter screen 222 and several through holes into the water-sand mixing tank, while the sand particles remain in the roller drum 221. The water remaining in the water-sand tank 2 enters the water tank 1 along route A. After being filtered layer by layer by the third filter screen 12, the water is transported along route B to the first water inlet channel 313 and along route C to the second water inlet channel 413. The sand particles remaining in the roller drum 221 enter the sand inlet channel 415 along route D through the conveying pipe 25 for recycling. Simultaneously, the water pump draws water from the sand tank 2 and sprays it onto the roller 221 through the third nozzle 262 to clear any potential blockages in the second filter screen 222 and the several through holes. Since the roller 221 rotates continuously under the action of the drive mechanism 23, the third nozzle 262 can spray water to prevent blockages in the entire roller 221 and the second filter screen 222, thus ensuring the filtration effect.

[0049] Compared with existing technologies, this utility model's water-sand separation device achieves highly efficient water-sand separation through a two-stage filtration structure and drive mechanism. The first-stage filtration structure removes large particles such as burrs from the water-sand mixture, while the second-stage filtration structure further separates water and sand particles. The drive mechanism rotates the drum to accelerate the separation speed and improve efficiency. The device features resource recycling; the separated water flows into a water tank and can be reused in the high-pressure water deburring mechanism; sand particles are conveyed through a pipe into the water-sand deburring mechanism for recycling, saving resources and reducing costs. The water spray component periodically sprays water to prevent clogging of the second filter screen and the drum's through-holes, ensuring stable filtration results. The frame provides stable support for the drum and second filter screen, and the connecting plate and rotating plate work together to adjust the drum's tilt angle to adapt to different working requirements. The first filter screen inside the filter bucket is replaceable, ensuring long-term stable filtration results. The overall structure is rationally designed, facilitating maintenance and operation; the device has significant environmental benefits, reducing pollution from untreated water-sand mixtures and meeting modern industrial environmental protection and resource conservation requirements. Its continuous working capacity and reduced downtime design improve production efficiency. It is suitable for various industrial scenarios and has wide applicability. In summary, the water-sand separation device of this invention improves separation efficiency and effectiveness, realizes resource recycling, and has significant economic and environmental benefits.

Claims

1. A water-sand separation device, comprising a water-sand tank, characterized in that: The water-sand tank is equipped with a primary filtration structure and a secondary filtration structure. The primary filtration structure is used to carry and initially filter the water-sand mixture. The secondary filtration structure is located at the output end of the primary filtration structure to receive the water-sand mixture after filtration by the primary filtration structure. The secondary filtration structure is connected to a drive mechanism to accelerate water-sand separation under the drive of the drive mechanism, so that the sand particles are kept in the secondary filtration structure and the water flows into the water-sand tank.

2. The water-sand separation device as described in claim 1, characterized in that: The primary filtration structure includes a filter bucket, which is used to filter out burrs mixed in with the water and sand mixture. The secondary filtration structure includes a roller and a second filter screen arranged around the roller. The roller has several through holes on its peripheral wall. The output end of the drive mechanism is connected to the roller to drive the roller to rotate or vibrate.

3. The water-sand separation device as described in claim 2, characterized in that: The secondary filtration structure further includes a frame, the roller is mounted on the outer periphery of the frame, and the second filter screen is disposed between the roller and the frame.

4. The water-sand separation device as described in claim 3, characterized in that: The frame includes a bottom frame, a top frame coaxially arranged with the bottom frame, and a plurality of connecting rods connected between the bottom frames. The plurality of connecting rods are distributed circumferentially around the frame, and each connecting rod is connected to the bottom frame and the top frame along the axial direction of the bottom frame and the top frame.

5. The water-sand separation device as described in claim 4, characterized in that: The top frame has an annular groove on the side facing the bottom frame, and the inner diameter of the annular groove matches the outer diameter of the roller so that the roller can be locked inside.

6. The water-sand separation device as described in claim 2, characterized in that: It also includes a bracket installed in the water tank, the bracket including a base plate, a first side plate and a second side plate, the base plate being horizontally installed at the bottom of the sand tank, the first side plate and the second side plate being vertically installed at both ends of the base plate, the roller being installed between the first side plate and the second side plate, the drive mechanism being installed on the first side plate, and the filter bucket being installed on the second side plate.

7. The water-sand separation device as described in claim 6, characterized in that: The driving mechanism includes a cylinder, a gear, and a rack. The gear is fixedly mounted on the bottom of the drum, the rack is mounted on the first side plate and meshes with the gear, the cylinder is mounted on the first side plate at a position corresponding to the rack, and the output shaft of the cylinder is fixedly connected to the rack to drive the rack to reciprocate.

8. The water-sand separation device as described in claim 7, characterized in that: A support wheel is rotatably mounted on the second side plate. The support wheel is frustum-shaped, and its inclined wall contacts the inclined drum to support the drum. The support wheel rotates as the drum rotates.

9. The water-sand separation device as described in claim 8, characterized in that: A connecting plate is installed on the side of the second side plate facing the drum. The connecting plate can be adjusted in height relative to the second side plate. The support wheel is installed on the second side plate. A rotating plate is provided on the first side plate for damping rotation. The cylinder and the rack are installed on the rotating plate. The connecting plate cooperates with the rotating plate to adjust the tilt angle of the drum.

10. The water-sand separation device as described in claim 2, characterized in that: It also includes a water spraying assembly disposed inside the sand tank. The water spraying assembly includes a water pipe, a water pump, and several nozzles. The water pipe and the water pump are both disposed on the inner wall of the sand tank, and the water inlet end of the water pipe is located inside the sand tank. The several nozzles are disposed at the water outlet end of the water pipe and all of the several nozzles face the roller.