Gravel separation device

Abstract

The utility model relates to the technical field of gravel separation, and discloses a gravel separation device which comprises a base, a shell is fixedly connected to the rear end of the top of the base, the right side of the shell is communicated with a feeding hopper, a fixing plate is fixedly connected to the lower middle portion of the left side of the shell, and a variable-frequency and variable-speed motor is fixedly connected to the top of the fixing plate. The output end of the variable-frequency and variable-speed motor is fixedly connected with an auger, the right side of the exterior of the auger is fixedly connected with a separation barrel, a plurality of sand leakage holes are formed in the exterior of the separation barrel, and the left side of the inner bottom wall of the shell is fixedly connected with a vibration motor. According to the utility model, the variable-frequency and variable-speed motor is used for driving the auger to rotate and the vibration motor to generate vibration, so that a sand-gravel mixture continuously moves on the separation barrel and is matched with the sand leakage holes in the separation barrel to accurately screen sand under the vibration effect, and the inclined plate guides sand grains to be discharged, thereby realizing the effect of efficiently separating the sand-gravel, improving the resource utilization rate and reducing the labor intensity of workers. And the production cost is reduced.

Description

Technical Field

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

[0002] A sand and gravel separation device is a mechanical device used to separate sand and gravel mixtures. It is mainly used in the construction, mining and concrete mixing plant industries to recycle, reuse or further process sand and gravel. In concrete mixing plants, it can separate sand and gravel from waste concrete and reuse it in concrete production, reducing the mining of natural sand and gravel resources and lowering production costs.

[0003] A search revealed Chinese patent publication number CN219702614U, which relates to a sand and gravel separation device. The device includes a frame, a separation tank connected to the frame, and a stirring assembly connected to the separation tank. A stone discharge port is also provided on one side of the separation tank. The device further includes a pushing component connected to the lower end face of the separation tank and a vibrating assembly connected to the outer wall of the separation tank. During discharge, the vibrating assembly continuously strikes the outer wall of the separation tank, causing the inner wall of the separation tank to vibrate and driving the gravel blocked by the stirring assembly away from the stirring assembly and discharging it along the inclined surface. This makes the discharge process more convenient and reduces manpower consumption. However, because the separation process of this device is longitudinal, the separation of sand and gravel of different particle sizes in the longitudinal depth is not precise enough. The stirring assembly cannot fully disperse the sand and gravel in different layers evenly, resulting in incomplete longitudinal separation. Furthermore, the vibrating assembly mainly acts on the outer wall, providing limited assistance to the separation of sand and gravel in the longitudinal depth, thus affecting the overall separation effect. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a sand and gravel separation device, which aims to improve the problem in the prior art where the overall separation process is longitudinal, resulting in limited assistance from the oscillation component to the longitudinal depth of sand and gravel separation, thus affecting the overall separation effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sand and gravel separation device, comprising a base, an outer shell fixedly connected to the top rear end of the base, a feed hopper connected to the right side of the outer shell, a fixed plate fixedly connected to the lower left side of the outer shell, a variable frequency speed control motor fixedly connected to the top of the fixed plate, an auger fixedly connected to the output end of the variable frequency speed control motor, a separation cylinder fixedly connected to the outer right side of the auger, a plurality of sand leakage holes opened on the outside of the separation cylinder, a vibration motor fixedly connected to the left side of the inner bottom wall of the outer shell, the output end of the vibration motor being in contact with the bottom left end of the outer wall of the separation cylinder, an inclined plate fixedly fixed to the front side of the inner bottom wall of the outer shell, a stone discharge port connected to the left front end of the outer shell, a sand discharge port connected to the middle front side of the outer shell, and a material lifting and tilting mechanism provided on the front side of the base.

[0006] The above technical solution involves using a variable frequency speed control motor to drive the auger and a vibrating motor to generate vibration, causing the sand and gravel mixture to move continuously on the separation cylinder. Under the action of vibration, the sand is precisely screened through the sand leakage holes on the separation cylinder, and the inclined plate guides the sand particles out, achieving efficient separation of sand and gravel, improving resource utilization, and reducing production costs.

[0007] As a further description of the above technical solution:

[0008] The material lifting and tilting mechanism includes two mounting slots, both of which are located on the top front side of the base. A rotating rod is rotatably connected to the front interior of each mounting slot. A tilting box is fixedly connected to the rear end of each rotating rod. Fixed lifting rings are fixedly connected to the top left and right ends of each tilting box. A fixed frame is fixedly connected to the front top of the base. Two winding machines are fixedly connected to the inner top wall of the fixed frame. Two steel ropes are provided on the outer walls of each of the two winding machines. Hooks are fixedly connected to the bottom ends of the steel ropes, and the hooks engage with the steel ropes.

[0009] The above technical solution involves using a winding machine to wind up the steel rope, which in turn drives the tilting box connected to the rotating rod to rotate. This enables convenient lifting and tilting of the tilting box and the materials inside, greatly improving discharge efficiency and reducing manual labor intensity.

[0010] As a further description of the above technical solution:

[0011] A fixed support leg is fixedly connected to the rear left end of the base, and a mounting bracket is fixedly connected to the top of the fixed support leg.

[0012] The above technical solution provides stable mounting support for the control console and tachometer by fixing the legs and mounting bracket, ensuring that these control and monitoring devices are in a suitable position for easy use and observation by operators.

[0013] As a further description of the above technical solution:

[0014] A control console is fixedly connected to the top of the mounting bracket, and multiple control buttons are fixedly connected to the top of the control console.

[0015] The above technical solution uses a control console and control buttons as the control center of the entire sand and gravel separation device. Operators can adjust the operating parameters of the equipment and control the equipment by pressing different control buttons.

[0016] As a further description of the above technical solution:

[0017] A tachometer is fixedly connected to the top front side of the mounting bracket, and the tachometer is electrically connected to the variable frequency speed control motor.

[0018] The above technical solution allows the tachometer to monitor the speed of the variable frequency speed control motor in real time, providing operators with information on the motor's operating status so that the motor speed can be adjusted according to the actual situation.

[0019] As a further description of the above technical solution:

[0020] The bottom of the fixed plate is fixedly connected to two diagonal braces, and the bottom ends of the two diagonal braces are fixedly connected to the left side of the base.

[0021] Through the above technical solution, the diagonal brace reinforces and supports the fixed plate, shares the vibration and pressure generated when the variable frequency speed control motor is working, and ensures the stable operation of the variable frequency speed control motor.

[0022] As a further description of the above technical solution:

[0023] A baffle is fixedly connected to the top of the vibration motor. The top of the baffle is conical and its diameter is larger than that of the baffle.

[0024] The above technical solution involves a baffle located at the top of the vibratory motor. Its conical design prevents materials such as sand and gravel from falling onto the vibratory motor during the separation process, thus protecting the vibratory motor from damage.

[0025] As a further description of the above technical solution:

[0026] A protective baffle is rotatably connected to the top front side of the hook, and the bottom end of the protective baffle is engaged inside the hook.

[0027] Through the above technical solution, after the hook and the fixed lifting ring are engaged, the protective baffle can prevent the hook from accidentally disengaging, thereby improving the safety and stability of the material lifting and tilting process.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the variable frequency speed control motor drives the auger to rotate and the vibrating motor generates vibration, so that the sand and gravel mixture moves continuously on the separation cylinder. Under the action of vibration, the sand is accurately screened by the sand leakage hole on the separation cylinder, and the inclined plate guides the sand particles to be discharged, thus achieving the effect of efficient separation of sand and gravel, improving resource utilization and reducing production costs.

[0030] 2. In this utility model, the steel rope is wound up by a winding machine, which drives the tilting box connected to the rotating rod to rotate, thereby realizing the convenient lifting and tilting of the tilting box and the material inside the tilting box, which greatly improves the discharge efficiency and reduces the intensity of manual labor. Attached Figure Description

[0031] Figure 1 This is a perspective view of a sand and gravel separation device proposed in this utility model;

[0032] Figure 2 This is a rear view of a sand and gravel separation device proposed in this utility model;

[0033] Figure 3 This is a cross-sectional view of the outer shell of a sand and gravel separation device proposed in this utility model;

[0034] Figure 4 This is a schematic diagram of the material lifting and tilting mechanism in a sand and gravel separation device proposed in this utility model;

[0035] Figure 5 This is a schematic diagram of the structure of the protective baffle in a sand and gravel separation device proposed in this utility model.

[0036] Legend:

[0037] 1. Base; 2. Material lifting and tilting mechanism; 201. Mounting slot; 202. Rotating rod; 203. Tilting box; 204. Fixed lifting ring; 205. Fixed frame; 206. Winding machine; 207. Steel rope; 208. Hook; 3. Outer shell; 4. Feed hopper; 5. Fixed plate; 6. Variable frequency speed control motor; 7. Screw; 8. Separating cylinder; 9. Sand leakage hole; 10. Vibrating motor; 11. Inclined plate; 12. Stone discharge port; 13. Sand discharge port; 14. Fixed support leg; 15. Mounting frame; 16. Control console; 17. Control button; 18. Tachometer; 19. Diagonal brace; 20. Baffle; 21. Protective baffle plate. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of a sand and gravel separation device, including a base 1. A housing 3 is fixedly connected to the top rear end of the base 1. The base 1 provides a stable support foundation for the entire device, ensuring that the device will not shake during operation and guaranteeing overall stability. The housing 3 provides a closed space for sand and gravel separation, preventing material splashing during the separation process and improving safety. A feed hopper 4 is located on the right side of the housing 3, guiding material into the device and ensuring smooth entry without clogging. A fixing plate 5 is fixed to the lower left side of the housing 3, providing a stable mounting position for a variable frequency speed control motor 6. The output end of the variable frequency speed control motor 6 is connected to an auger 7, providing power for the rotation of the auger 7 to stir and push the sand and gravel mixture, improving separation efficiency. A separation cylinder 8 is fixedly connected to the outside right side of the auger 7, causing the material inside the separation cylinder 8 to move under the action of the auger 7, which helps to fully disperse the sand and gravel mixture and increase separation efficiency. The separator 8 has multiple sand-leaking holes 9 on its exterior to screen out smaller sand particles, achieving precise separation of sand particles and improving separation accuracy. The vibration motor 10 is fixed to the left side of the inner bottom wall of the outer shell 3, with its output end in contact with the bottom left end of the outer wall of the separator 8, generating vibration to accelerate the speed of sand passing through the sand-leaking holes 9, preventing sand from clogging the sand-leaking holes 9, and further improving the separation effect. The inclined plate 11 is fixed to the front side of the inner bottom wall of the outer shell 3, guiding the falling sand towards the sand outlet 13, ensuring that the separated sand can be discharged quickly and orderly. The stone discharge port 12 is located at the front left end of the outer shell 3, used to discharge larger stones, so that the separated stones can be discharged in an orderly manner, facilitating subsequent processing. The sand outlet 13 is located in the middle of the front side of the outer shell 3, used to discharge the separated sand, ensuring that the sand can be discharged smoothly, facilitating collection and utilization. The material lifting and tilting mechanism 2 is located at the front side of the base 1, used to lift and tilt the material into the feed hopper 4, providing convenience for the feeding of the sand and gravel separation device and improving the feeding efficiency.

[0040] Specifically, during sand and gravel separation, the sand and gravel mixture to be separated is poured into the outer shell 3 from the feed hopper 4. The feed hopper 4 guides the material in, preventing blockage at the inlet and ensuring a smooth start to the separation process. After entering the outer shell 3, the sand and gravel mixture falls onto the separation cylinder 8. The variable frequency speed-regulating motor 6 is started, and its output drives the auger 7 to rotate. This stirs and propels the sand and gravel mixture, causing it to move continuously on the separation cylinder 8, allowing sand and gravel particles of different sizes to disperse fully, increasing the separation opportunity and accelerating the separation speed. On the other hand, the sand leakage holes 9 on the outside of the separation cylinder 8, propelled by the auger 7, stirred, and under the action of gravity, allow smaller sand particles to gradually fall. The sand leakage holes 9 can accurately screen out sand particles, improving separation accuracy. Simultaneously, the vibration motor 10 is started, its output end fitting against the bottom left side of the outer wall of the separation cylinder 8. The resulting vibration is transmitted to the separation cylinder 8, causing it to vibrate continuously, accelerating the speed at which sand passes through the sand leakage holes 9, preventing blockage, and improving the separation effect. It also makes the sand and gravel mixture looser, which is conducive to the separation process. After separation, the larger stones remain on the separation cylinder 8. With the rotation and pushing of the auger 7, they move towards the stone discharge port 12 and are finally discharged from the stone discharge port 12. The stone discharge port 12 allows the separated stones to be discharged in an orderly manner, which is convenient for subsequent processing and utilization. The sand falling from the sand leakage hole 9 falls on the inner bottom wall of the outer shell 3. Since the inclined plate 11 is fixed on the front side of the inner bottom wall of the outer shell 3, the sand moves towards the sand outlet 13 under its guidance and is finally discharged from the sand outlet 13. The inclined plate 11 guides the sand to flow smoothly to the sand outlet 13, avoiding the accumulation of sand in the outer shell 3 and ensuring that the separated sand is discharged quickly and in an orderly manner. The variable frequency speed control motor 6 drives the auger 7 to rotate and the vibration motor 10 generates vibration, so that the sand and gravel mixture moves continuously on the separation cylinder 8. Under the action of vibration, the sand leakage hole 9 on the separation cylinder 8 accurately screens the sand. The inclined plate 11 guides the sand particles to be discharged, which achieves the effect of efficient separation of sand and gravel, improves resource utilization, and reduces production costs.

[0041] Reference Figure 1 and Figure 4Two mounting slots 201 are both located on the front top of the base 1, providing space for the installation and rotation of the rotating rod 202. This ensures that the rotating rod 202 can be stably installed on the base 1 and achieve rotation. The rotating rod 202 is rotatably connected to the front interior of each mounting slot 201. The rear end of the rotating rod 202 is fixedly connected to the tilting box 203, allowing the tilting box 203 to rotate around the rotating rod 202. This provides a rotational basis for the lifting and tilting actions of the tilting box 203. Fixed lifting rings 204 are fixedly connected to the left and right ends of the top of each tilting box 203 for connection to hooks 208. This facilitates the connection of the steel cable 207 to the tilting box 203 via the hooks 208, enabling lifting actions. The front top of the base 1 is fixedly connected to... The fixed frame 205 provides an installation position for the winding machine 206, ensuring that the winding machine 206 can be stably installed in a suitable position. Two winding machines 206 are fixedly connected to the inner top wall of the fixed frame 205 for winding steel ropes 207 to provide power for lifting the tilting box 203. Two steel ropes 207 are provided on the outer walls of the two winding machines 206 for connecting the winding machines 206 and hooks 208 to transmit the tension of the winding machines 206 and realize the lifting of the tilting box 203. The bottom ends of the multiple steel ropes 207 are fixedly connected to hooks 208, and the multiple hooks 208 are respectively engaged with the multiple steel ropes 207 for connecting with the fixed lifting ring 204 to ensure that the connection between the steel ropes 207 and the tilting box 203 is firm and reliable.

[0042] Specifically, when the separated materials need to be transported away, the separated materials are discharged into the tipping box 203. The tipping box 203 provides a stable bearing space for the materials, ensuring that the materials will not scatter during lifting and tipping. It is rotatably connected to the mounting groove 201 through the rotating rod 202, providing a flexible movement basis for the lifting and tipping of the tipping box 203. Then, the winding machine 206 on the inner top wall of the fixed frame 205 is started. The winding machine 206 begins to wind up the steel rope 207. The hook 208 at the bottom of the steel rope 207 rises as the steel rope 207 is wound up, engaging with the fixed lifting rings 204 at the top left and right ends of the tipping box 203. The winding machine 206 provides strong pulling force, and the steel rope 207... The 7th winding mechanism can withstand a large weight, ensuring a safe and stable lifting process. Then, the winding machine 206 continues to wind the steel rope 207. Under the tension of the steel rope 207, the tilting box 203 gradually rotates upward around the rotating rod 202, realizing the lifting of the material. This lifting method can raise the material to a suitable height, making it convenient to pour into the feed hopper 4 of the sand and gravel separation device. When the tilting box 203 is raised to a certain height, the winding machine 206 stops. At this time, the material can be poured into the feed hopper 4, completing the material tilting process. By winding the steel rope 207 through the winding machine 206, the tilting box 203 connected to the rotating rod 202 is driven to rotate, realizing convenient lifting and tilting of the material, greatly improving the discharge efficiency and reducing the intensity of manual labor.

[0043] Reference Figure 2A fixed support leg 14 is fixedly connected to the rear left end of the base 1. The fixed support leg 14 provides stable support for the mounting frame 15, ensuring that the mounting frame 15 is installed firmly and not easily shaken. The mounting frame 15 is fixedly connected to the top of the fixed support leg 14. The mounting frame 15 is used to install the control console 16 and the tachometer 18, providing an installation position for the control console 16 and the tachometer 18, ensuring that they are at a suitable height for operation and observation. The control console 16 is fixedly connected to the top of the mounting frame 15. The control console 16 is the control center of the entire device, allowing operators to operate and control the device through multiple control buttons 17 on the control console 16. Multiple control buttons 17 are fixedly connected to the top of the control console 16. The control buttons 17 are used to start and stop the device and adjust the operating parameters of the device, realizing various operation and control functions of the device. The tachometer 18 is fixedly connected to the top front of the mounting frame 15. The tachometer 18 is used to display the speed of the variable frequency speed control motor 6, allowing operators to understand the operating status of the variable frequency speed control motor 6 in real time, so as to adjust the motor speed in a timely manner. The tachometer 18 is electrically connected to the variable frequency speed control motor 6.

[0044] Specifically, the fixed support leg 14 and mounting bracket 15 provide stable mounting support for the control console 16 and tachometer 18, ensuring that these control and monitoring devices are in a suitable position for easy use and observation by operators. The control console 16 and control button 17 are the control center of the entire sand and gravel separation device. Operators can adjust the operating parameters of the equipment by pressing different control buttons 17 to achieve operation and control of the equipment. The tachometer 18 monitors the speed of the variable frequency speed control motor 6 in real time, providing operators with operating status information of the variable frequency speed control motor 6 so that the motor speed can be adjusted according to the actual situation.

[0045] Reference Figure 2 , Figure 3 and Figure 5 The bottom of the fixed plate 5 is fixedly connected to two diagonal braces 19. The two diagonal braces 19 provide additional support for the fixed plate 5, enhance the stability of the fixed plate 5, and ensure that the variable frequency speed control motor 6 works more smoothly. The bottom ends of the two diagonal braces 19 are fixedly connected to the left side of the base 1. The top of the vibrating motor 10 is fixedly connected to a baffle 20. The baffle 20 can prevent materials such as sand and gravel from falling onto the vibrating motor 10, protect the vibrating motor 10 from damage, and ensure its normal operation. The top of the baffle 20 is conical and its diameter is larger than the diameter of the baffle 20. The top front of the hook 208 is rotatably connected to a protective baffle 21. The protective baffle 21 can prevent the hook 208 from accidentally disengaging and improve the safety during the material lifting and tilting process. The bottom end of the protective baffle 21 is engaged inside the hook 208.

[0046] Specifically, the diagonal brace 19 reinforces and supports the fixed plate 5, sharing the vibration and pressure generated by the variable frequency speed control motor 6 during operation, ensuring the stable operation of the variable frequency speed control motor 6. The baffle 20 is located on top of the vibrating motor 10, and its conical design can prevent materials such as sand and gravel from falling onto the vibrating motor 10 during the separation process, protecting the vibrating motor 10 from damage. After the hook 208 is engaged with the fixed lifting ring 204, the protective baffle 21 can prevent the hook 208 from accidentally disengaging, improving the safety and stability of the material lifting and tilting process.

[0047] Working Principle: When performing sand and gravel separation, the sand and gravel mixture to be separated is poured into the outer shell 3 from the feed hopper 4. The feed hopper 4 guides the material in, preventing blockage at the inlet and ensuring a smooth start to the separation process. After entering the outer shell 3, the sand and gravel mixture falls onto the separation cylinder 8. The variable frequency speed control motor 6 is started, and its output drives the auger 7 to rotate. On one hand, it stirs and propels the sand and gravel mixture, causing it to move continuously on the separation cylinder 8, allowing sand and gravel particles of different sizes to disperse fully, increasing the separation opportunity and accelerating the separation speed. On the other hand, the sand leakage holes 9 on the outside of the separation cylinder 8, under the pushing, stirring, and gravity of the auger 7, allow smaller sand particles to gradually fall. The sand leakage holes 9 can accurately screen out sand particles, improving separation accuracy. At the same time, the vibration motor 10 is started, and its output is connected to the outer wall of the separation cylinder 8. The bottom of the left end fits together, and the resulting vibration is transmitted to the separation cylinder 8, causing the separation cylinder 8 to vibrate continuously, accelerating the speed of sand passing through the sand leakage hole 9, avoiding blockage, improving the separation effect, and making the sand and gravel mixture more loose, which is conducive to the separation process. After separation, the larger stones remain on the separation cylinder 8, and with the rotation and pushing of the auger 7, they move towards the stone discharge port 12 and are finally discharged from the stone discharge port 12. The stone discharge port 12 allows the separated stones to be discharged in an orderly manner, which is convenient for subsequent processing and utilization. The sand falling from the sand leakage hole 9 lands on the inner bottom wall of the outer shell 3. Since the inclined plate 11 is fixed on the front side of the inner bottom wall of the outer shell 3, the sand moves towards the sand outlet 13 under its guidance and is finally discharged from the sand outlet 13. The inclined plate 11 guides the sand to flow smoothly to the sand outlet 13, avoiding the accumulation of sand in the outer shell 3 and ensuring that the separated sand is discharged quickly and in an orderly manner.

[0048] Furthermore, when the separated materials need to be transported away, the separated materials will be discharged into the tilting box 203. The tilting box 203 provides a stable bearing space for the materials, ensuring that the materials will not scatter during lifting and tilting. It is rotatably connected to the mounting groove 201 through the rotating rod 202, providing a flexible movement basis for the lifting and tilting of the tilting box 203. Then, the winding machine 206 on the inner top wall of the fixed frame 205 is started. The winding machine 206 begins to wind up the steel rope 207. The hook 208 at the bottom of the steel rope 207 rises as the steel rope 207 is wound up, connecting the hook 208 to the tilting box 203. The fixed lifting rings 204 at the top left and right ends engage with each other, the winding machine 206 provides strong pulling force, and the steel rope 207 can withstand a large weight, ensuring a safe and stable lifting process. Then the winding machine 206 continues to wind the steel rope 207, and the tilting box 203 gradually rotates upward around the rotating rod 202 under the action of the tension of the steel rope 207, realizing the lifting of the material. This lifting method can lift the material to a suitable height, making it convenient to pour into the feed hopper 4 of the sand and gravel separation device. When the tilting box 203 is lifted to a certain height, the winding machine 206 stops, and the material can be poured into the feed hopper 4, completing the material tilting process.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sand and gravel separation device, comprising a base (1), characterized in that: The top rear end of the base (1) is fixedly connected to the outer shell (3). The right side of the outer shell (3) is connected to the feed hopper (4). The lower left side of the outer shell (3) is fixedly connected to the fixing plate (5). The top of the fixing plate (5) is fixedly connected to the variable frequency speed control motor (6). The output end of the variable frequency speed control motor (6) is fixedly connected to the auger (7). The right side of the auger (7) is fixedly connected to the separator (8). The outside of the separator (8) is provided with multiple sand leakage holes (9). The left side of the inner bottom wall of the outer shell (3) is fixedly connected to the vibration motor (10). The output end of the vibration motor (10) is in contact with the bottom left side of the outer wall of the separator (8). The front side of the inner bottom wall of the outer shell (3) is fixedly connected to the inclined plate (11). The left front side of the outer shell (3) is connected to the stone discharge port (12). The middle front side of the outer shell (3) is connected to the sand outlet (13). The front side of the base (1) is provided with a material lifting and tilting mechanism (2).

2. The sand and gravel separation device according to claim 1, characterized in that: The material lifting and tilting mechanism (2) includes two mounting slots (201). Both mounting slots (201) are located on the front top of the base (1). Rotating rods (202) are rotatably connected to the front of the interior of both mounting slots (201). Tilting boxes (203) are fixedly connected to the rear ends of both rotating rods (202). Fixed lifting rings (204) are fixedly connected to the top left and right ends of the top of both tilting boxes (203). A fixed frame (205) is fixedly connected to the front top of the base (1). Two winding machines (206) are fixedly connected to the inner top wall of the fixed frame (205). Two steel ropes (207) are provided on the outer walls of the two winding machines (206). Hooks (208) are fixedly connected to the bottom ends of the multiple steel ropes (207). The multiple hooks (208) are respectively engaged with the multiple steel ropes (207).

3. The sand and gravel separation device according to claim 1, characterized in that: A fixed support leg (14) is fixedly connected to the rear left end of the base (1), and a mounting bracket (15) is fixedly connected to the top of the fixed support leg (14).

4. The sand and gravel separation device according to claim 3, characterized in that: The top of the mounting bracket (15) is fixedly connected to a control console (16), and the top of the control console (16) is fixedly connected to a plurality of control buttons (17).

5. A sand and gravel separation device according to claim 3, characterized in that: A tachometer (18) is fixedly connected to the top front side of the mounting bracket (15), and the tachometer (18) is electrically connected to the variable frequency speed control motor (6).

6. The sand and gravel separation device according to claim 1, characterized in that: The bottom of the fixed plate (5) is fixedly connected to two diagonal braces (19), and the bottom ends of the two diagonal braces (19) are fixedly connected to the left side of the base (1).

7. The sand and gravel separation device according to claim 1, characterized in that: The top of the vibration motor (10) is fixedly connected to a baffle (20), the top of the baffle (20) is conical and the diameter is larger than the diameter of the baffle (20).

8. A sand and gravel separation device according to claim 2, characterized in that: A protective baffle (21) is rotatably connected to the top front side of the hook (208), and the bottom end of the protective baffle (21) is engaged inside the hook (208).

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