A broken screen sand mixing device

Abstract

This invention belongs to the field of sand and gravel crushing technology, specifically an integrated crushing, screening, and sand mixing device. The integrated device includes a crusher body, an opening and closing material limiting mechanism at the top of the crusher body, a lifting and conveying mechanism inside the opening and closing material limiting mechanism, a filter plate inside the crusher body, and a sand mixing box inside the crusher body. By adjusting the inclination of the two conveyor belts, the device avoids over-crushing of small pieces of material when large and small materials fall together for crushing, thereby improving the crushing quality. The transmission of the two conveyor belts lifts large pieces of material, creating a path for smaller pieces to fall, thus increasing the feeding speed. The slow rotation of the cam column slightly lifts the slowly moving conveyor belts from the inside, further accelerating the falling speed of small pieces of material and further improving the overall working efficiency of the device.

Description

Technical Field

[0001] This invention belongs to the field of sand and gravel crushing technology, specifically a crushing, screening and sand mixing integrated device. Background Technology

[0002] The integrated crushing, screening, and sand mixing unit is a compact combined equipment that integrates crushing, screening, and mixing processes. It first crushes large pieces of material, then screens out qualified fine materials, and finally mixes them with additives to directly produce finished sand. This design eliminates the need for material transfer between multiple machines in traditional processes, and features small footprint, high efficiency, and automated continuous production.

[0003] In the prior art, when the material enters the crushing chamber, it falls between two crushing wheels that rotate in opposite directions. As the crushing wheels rotate, the material is drawn into the wedge-shaped gap between the two wheels and is bitten by the teeth or protrusions on the wheel surface. During the relative rotation, the material is split, broken and crushed. The crushed particles are discharged from the bottom of the gap between the two wheels. The size of the gap determines the discharge particle size. Large pieces of material that are not fully crushed will be continuously entrained by the wheel surface and repeatedly crushed until they can pass through the gap.

[0004] The above-mentioned solutions still have some problems in practical application. Although the existing technology can complete the basic crushing of sand and gravel, construction sites that frequently change locations generally use excavators for intermittent feeding. This extensive method often directly mixes and dumps materials with large differences in particle size into the silo. During the crushing process, large pieces of material, as rigid load-bearing bodies, will transfer the huge crushing force they bear to the surrounding small particles in a highly concentrated manner under the compression of the breaker hammer. At the same time, fine particles are trapped between large pieces of material. Due to the lack of sufficient lateral displacement space to release the pressure, they can only be over-crushed into powder much smaller than the target particle size under repeated shearing and grinding. This will lead to serious over-grinding of qualified fine materials, thereby reducing the overall crushing quality and yield.

[0005] Therefore, the present invention provides an integrated crushing, screening and sand mixing device. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the present invention provides an integrated crushing, screening and sand mixing device, the integrated device includes a crusher body, an opening and closing material limiting mechanism is provided on the top of the crusher body, a lifting and conveying mechanism is provided inside the opening and closing material limiting mechanism, a filter plate is provided inside the crusher body, and a sand mixing box is provided inside the crusher body, the filter plate and the sand mixing box are orderly distributed along the vertical plane;

[0008] The opening and closing material limiting mechanism includes a baffle, and a conveyor belt is driven on the side of the baffle. There are two conveyor belts, and the opening and closing of the two conveyor belts can make large pieces of material and small pieces of material fall in batches.

[0009] Preferably, the crusher body includes a shell, a motor is fixedly connected to the side of the shell, the output shaft of the motor is rotatably connected to the side wall of the shell, a crushing wheel is fixedly connected to the output shaft of the motor, the other end of the crushing wheel is rotatably connected to the inner wall of the shell, a rotating gear is fixedly connected to the other end of the crushing wheel, two crushing wheels and two rotating gears are provided, the outer ring surfaces of the two crushing wheels abut against each other, and the outer edge teeth of the two rotating gears mesh with each other.

[0010] Preferably, the opening and closing limiting mechanism includes a cylinder, which is fixedly connected to the top of the outer shell, and a displacement rod is fixedly connected to the output end of the cylinder, with a connecting rod rotatably connected to one end of the displacement rod.

[0011] The other end of the linkage is rotatably connected to a rotating rod, which is composed of a column and a rod.

[0012] A limit post is fixedly connected to one side of the rotating rod.

[0013] Preferably, a limiting groove is formed on the side of the outer shell, the limiting post is slidably connected inside the limiting groove, the rotating rod column is rotatably connected inside the outer shell, and the baffle is fixedly connected to one end of the rotating rod column.

[0014] Preferably, a first rotating column is rotatably connected to one side of the baffle, a conveyor belt is driven to the outer ring surface of the first rotating column, a second rotating column is rotatably connected inside the conveyor belt, and protrusions are fixedly connected to the surface of the conveyor belt. Multiple sets of protrusions are provided and are evenly and equidistantly distributed on the surface of the conveyor belt.

[0015] Preferably, the limiting groove is designed to prevent the connecting rod and the rotating rod from being in the same straight line when the displacement rod descends, and the baffle is provided with a cavity inside.

[0016] Preferably, the lifting and conveying mechanism includes an arc-shaped rack fixedly connected to the inner wall of the outer shell, a first gear meshing with the side of the arc-shaped rack, a third rotating column fixedly connected to the middle of the first gear, the third rotating column being rotatably connected through the inside of the baffle, a second gear fixedly connected to the outer ring surface of the middle of the third rotating column, and the other end of the third rotating column being fixedly connected to one end of the second rotating column.

[0017] Preferably, the outer ring surface of the second gear is connected to a chain for transmission, the inner ring surface of the chain is rotatably connected to a third gear, and a fourth gear is provided between the second gear and the third gear, all of which are connected to the chain for transmission.

[0018] Preferably, a cam post is fixedly connected to the middle of the fourth gear, and the fourth gear and the cam post are connected by a fixed shaft, which is rotatably connected to the side wall of the baffle.

[0019] Preferably, the baffle will drive the first gear to move synchronously during the swinging process. Since the first gear is meshed with the arc-shaped rack, the first gear can be driven to rotate while the baffle is swinging, thereby driving the second rotating column to rotate, and then driving the conveyor belt to drive in the opposite direction of the material to the material, causing large pieces of material to jump between the two conveyor belts and increasing the speed at which small pieces of material fall.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. The integrated crushing, screening, and sand mixing device of the present invention has two conveyor belts symmetrically arranged about the feed inlet of the outer shell. When the two conveyor belts rotate slowly downwards at the same time, the gap will gradually widen. At this time, small pieces of sand and gravel can fall through the gap into the two crushing wheels for crushing, while large pieces of sand and gravel will be stuck between the two conveyor belts. This can avoid the situation where small pieces of material are over-crushed when large and small materials fall down together for crushing, thereby improving the crushing quality.

[0022] 2. The integrated crushing, screening, and sand mixing device of the present invention, when the two baffles rotate continuously, will drive the two conveyor belts to drive. At this time, the inclination of the conveyor belts will become larger and larger. At the same time, the material remaining between the two conveyor belts is large, and the traction force of the conveyor belts on the material is much less than the weight of the material itself. Therefore, during the synchronous transmission of the two conveyor belts, the material will not be carried out of the shell. It can only be shaken between the two conveyor belts. At this time, the shaking of the large material can create a new path for the small material to fall, thereby increasing the falling speed of the small material and avoiding the situation where the large material is blocked in the gap where the two conveyor belts are tilted, causing the small material to be unable to fall, thereby improving the working efficiency of the equipment.

[0023] 3. In the integrated crushing, screening, and sand mixing device of the present invention, when the chain drive is in operation, the fourth gear rotates and simultaneously drives the cam column to rotate via the fixed shaft. Since the fixed shaft rotates through the side wall of the baffle, the rotation of the cam column does not affect the operation of the baffle. Due to the structure of the cam column, it can slightly lift the slowly moving conveyor belt from the inside during rotation, and in conjunction with the transmission of the two conveyor belts, further promote the falling speed of small pieces of material and further improve the overall working efficiency of the device. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the all-in-one machine shown in this invention;

[0027] Figure 3 This is the invention shown Figure 2 Enlarged structural diagram at point A in the middle;

[0028] Figure 4 This is the invention shown Figure 2 Enlarged structural diagram at point B;

[0029] Figure 5 This is a three-dimensional structural diagram of the opening and closing material limiting mechanism shown in this invention;

[0030] Figure 6 This is the invention shown Figure 5 Enlarged structural diagram at point C;

[0031] Figure 7 This is a schematic diagram showing the position and structure of the opening and closing limiting mechanism and the lifting and conveying mechanism shown in this invention;

[0032] Figure 8 This is a three-dimensional structural diagram of the lifting and conveying mechanism shown in this invention;

[0033] In the diagram: 1. Crusher body; 101. Outer shell; 102. Motor; 103. Crushing wheel; 104. Rotating gear;

[0034] 2. Opening and closing material limiting mechanism; 201. Cylinder; 202. Displacement rod; 203. Linkage rod; 204. Rotating rod; 205. Limiting post; 206. Limiting groove; 207. Baffle; 208. First rotating post; 209. Conveyor belt; 210. Second rotating post; 211. Protrusion;

[0035] 3. Lifting and conveying mechanism; 301. Arc-shaped rack; 302. First gear; 303. Third rotating column; 304. Second gear; 305. Chain; 306. Third gear; 307. Fourth gear; 308. Cam column;

[0036] 4. Filter plate;

[0037] 5. Sand mixing box. Detailed Implementation

[0038] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0039] Example 1

[0040] like Figures 1 to 8 As shown in the embodiment of the present invention, an integrated crushing, screening, and sand mixing device is provided. The integrated device includes a crusher body 1, an opening and closing material limiting mechanism 2 is provided on the top of the crusher body 1, a lifting and conveying mechanism 3 is provided inside the opening and closing material limiting mechanism 2, a filter plate 4 is provided inside the crusher body 1, and a sand mixing box 5 is provided inside the crusher body 1. The filter plate 4 and the sand mixing box 5 are arranged in an orderly manner along the vertical plane.

[0041] The opening and closing material limiting mechanism 2 includes a baffle 207, and a conveyor belt 209 is driven on the side of the baffle 207. There are two conveyor belts 209, and the opening and closing of the two conveyor belts 209 can make large pieces of material and small pieces of material fall in batches.

[0042] The crusher body 1 includes a shell 101. A motor 102 is fixedly connected to the side of the shell 101. The output shaft of the motor 102 is rotatably connected to the side wall of the shell 101. A crushing wheel 103 is fixedly connected to the output shaft of the motor 102. The other end of the crushing wheel 103 is rotatably connected to the inner wall of the shell 101. A rotating gear 104 is fixedly connected to the other end of the crushing wheel 103. There are two crushing wheels 103 and two rotating gears 104. The outer ring surfaces of the two crushing wheels 103 abut against each other, and the outer teeth of the two rotating gears 104 mesh with each other.

[0043] Specifically, while existing technologies can achieve basic crushing of sand and gravel, construction sites that frequently relocate often use excavators for intermittent feeding. This extensive method often results in materials with vastly different particle sizes being directly mixed and dumped into the silo. During the crushing process, large pieces of material, acting as rigid load-bearing bodies, transmit the enormous crushing force they bear to the surrounding smaller particles under the compression of the breaker hammer. Simultaneously, fine particles are trapped between the large pieces of material. Lacking sufficient lateral displacement space to release the pressure, they are excessively crushed into powder far smaller than the target particle size under repeated shearing and grinding. This leads to severe over-grinding of qualified fine materials, thereby reducing the overall crushing quality and yield.

[0044] Therefore, this invention solves this problem by setting a corresponding structure. The integrated crushing, screening, and sand-mixing device of this invention, when it is necessary to crush sand and gravel, uses an excavator to dig up the sand and gravel and transport it to the crusher body 1. At this time, the excavator places the sand and gravel in the hopper at the feed inlet of the outer casing 101. Then, the motor 102, fixed to the outer wall of the outer casing 101, is started. When the motor 102 starts, it drives the crushing wheel 103, which is fixedly connected to the output shaft, to rotate. Since the other end of the crushing wheel 103 is fixed to the rotating gear 104, the rotating wheel 103 drives the rotating gear 104 to rotate synchronously. Since there are two rotating gears 104, and both rotating gears 104 are on the same horizontal plane and in a meshing state, when one rotating gear 104 rotates, the other rotating gear 104 will rotate in the opposite direction, and simultaneously drive the other crushing wheel 103 to rotate in the opposite direction. Therefore, when the sand and gravel fall between the two crushing wheels 103, the crushing wheel 103 will pass through the teeth on its outer ring surface. The crusher crushes the sand and gravel, thus completing the crushing process. After the crushing is completed, the crushed material falls onto the filter plate 4. At this time, the qualified material falls through the holes on the filter plate 4 and into the mixing box 5 for mixing. However, during the crushing process, large pieces of material, as rigid load-bearing bodies, will transfer the huge crushing force they bear to the surrounding small particles under the squeezing of the crusher. At the same time, fine particles are trapped between the large pieces of material. Due to the lack of sufficient lateral displacement space to release the pressure, they can only be over-crushed into powder much smaller than the target particle size under repeated shearing and grinding. This will lead to serious over-crushing of qualified fine materials, thereby reducing the overall crushing quality and yield. At this time, the opening and closing of the two conveyor belts 209 during the feeding process can allow small pieces of material to fall from the gap between the two conveyor belts 209, thereby avoiding the over-crushing of small pieces of material when large and small pieces of material fall, and thus improving the crushing quality. The filter plate 4 and the mixing box 5 are common screening and mixing mechanisms on the market and are existing technologies, so they will not be described in detail here.

[0045] Example 2

[0046] like Figures 2 to 8 As shown in Example 1, another embodiment of the present invention is as follows:

[0047] like Figure 5 As shown, the opening and closing limiting material mechanism 2 in this embodiment includes a cylinder 201, which is fixedly connected to the top of the outer shell 101. A displacement rod 202 is fixedly connected to the output end of the cylinder 201, and a connecting rod 203 is rotatably connected to one end of the displacement rod 202.

[0048] The other end of the linkage 203 is rotatably connected to a rotating rod 204, which is composed of a column and a rod and is in an L-shape.

[0049] A limit post 205 is fixedly connected to one side of the rotating rod 204.

[0050] Specifically, when it is necessary to crush sand and gravel, the cylinder 201 fixed on the side wall of the outer shell 101 is activated. At this time, the cylinder 201 will move downward, and at the same time, it will drive the displacement rod 202 fixedly connected to its top to move downward synchronously. During the movement, since the displacement rod 202 and the connecting rod 203 are rotatably connected, the displacement rod 202 will drive the connecting rod 203 to move downward synchronously. At the same time, since the connecting rod 203 and the rotating rod 204 are also rotatably connected, but the column of the rotating rod 204 is inserted through the interior of the outer shell 101, when the displacement rod 202 moves downward, the connecting rod 203 will rotate around the axis of the displacement rod 202, and at the same time, it will pull the rotating rod 204 around the column of the rotating rod 204 synchronously through the axis of the rotating rod 204.

[0051] like Figure 3 As shown, in this embodiment, a limiting groove 206 is provided on the side of the outer shell 101, the limiting post 205 is slidably connected inside the limiting groove 206, the rotating rod 204 is rotatably connected through the inner shell 101, and the baffle 207 is fixedly connected to one end of the rotating rod 204.

[0052] like Figure 5 As shown, in this embodiment, a first rotating column 208 is rotatably connected to one side of the baffle 207. A conveyor belt 209 is drivenly connected to the outer ring surface of the first rotating column 208. A second rotating column 210 is rotatably connected inside the conveyor belt 209. A protrusion 211 is fixedly connected to the surface of the conveyor belt 209. Multiple sets of protrusions 211 are provided and are evenly and equidistantly distributed on the surface of the conveyor belt 209.

[0053] Specifically, when the rod of the rotating rod 204 rotates around the column of the rotating rod 204, it will simultaneously drive the limiting post 205 fixed on the side of the rotating rod 204 to slide along the guide of the limiting groove 206. Since the baffle 207 is fixedly connected to the column of the rotating rod 204, the baffle 207 will be pulled to rotate counterclockwise at the same time as the rotating rod 204 rotates, which will in turn pull the first rotating column 208, the conveyor belt 209, the second rotating column 210 and the protrusion 211 to rotate synchronously. Since there are two conveyor belts 209 symmetrically arranged about the feed port of the outer shell 101, when the two conveyor belts 209 rotate slowly downwards at the same time, the seam... The gap will gradually widen, allowing small pieces of sand and gravel to fall through the gap between the two crushing wheels 103 for crushing. Larger pieces of sand and gravel will be stuck between the two conveyor belts 209. The limiting groove 206 can block the limiting post 205 when it moves to its maximum extent. The connecting rod 203 and the rotating rod 204 are in a "<" shape when they move to their maximum extent, thus preventing the connecting rod 203 and the rotating rod 204 from moving in the opposite direction in the next movement. The two conveyor belts 209 can prevent small pieces of material from being over-crushed when large and small materials fall together for crushing, thereby improving the crushing quality.

[0054] like Figure 6 As shown, the lifting and conveying mechanism 3 in this embodiment includes an arc-shaped rack 301 fixedly connected to the inner wall of the outer shell 101. A first gear 302 is meshed on the side of the arc-shaped rack 301. A third rotating column 303 is fixedly connected to the middle of the first gear 302. The third rotating column 303 is rotatably connected through the baffle 207. A second gear 304 is fixedly connected to the outer ring surface of the middle part of the third rotating column 303. The other end of the third rotating column 303 is fixedly connected to one end of the second rotating column 210.

[0055] Specifically, when the baffle 207 rotates counterclockwise around the rotating rod 204, it drives the third rotating column 303, which runs through the other end of the baffle 207, to move synchronously. This, in turn, drives the first gear 302, which is fixed to one end of the third rotating column 303, to move. Since the first gear 302 meshes with the arc-shaped rack 301, and the arc-shaped rack 301 is fixed to the inner wall of the outer casing 101, when the baffle 207 rotates, the first gear 302 will rotate counterclockwise, thus driving the second rotating column 210, which is fixed to the other end of the third rotating column 303, to transmit power. Since the two conveyor belts 209 are not completely closed in the initial state and are in an inverted "V" shape, small materials will fall from the inclined surface to the two conveyor belts 209 during the slow transmission process. Crushing occurs between the crushing wheels 103. As the two baffles 207 rotate continuously, they drive the two conveyor belts 209. At this time, the inclination of the conveyor belts 209 increases. Meanwhile, the material remaining between the two conveyor belts 209 is relatively large, and the traction force exerted by the conveyor belts 209 on the material is much less than the weight of the material itself. Therefore, during the synchronous transmission of the two conveyor belts 209, the material will not be carried out of the housing 101. It can only be shaken between the two conveyor belts 209. At this time, the shaking of the large pieces of material can create a new path for the falling of the small pieces of material, thereby increasing the falling speed of the small pieces of material. This avoids the situation where large pieces of material are blocked in the gap where the two conveyor belts 209 are tilted, preventing the small pieces of material from falling. This improves the working efficiency of the equipment.

[0056] like Figure 7 As shown, in this embodiment, the outer ring surface of the second gear 304 is connected to a chain 305, the inner ring surface of the chain 305 is rotatably connected to a third gear 306, and a fourth gear 307 is provided between the second gear 304 and the third gear 306. The fourth gear 307 is connected to the chain 305.

[0057] like Figure 7 and Figure 8 As shown, in this embodiment, a cam column 308 is fixedly connected to the middle of the fourth gear 307. The fourth gear 307 and the cam column 308 are connected by a fixed shaft, and the fixed shaft is rotatably connected to the side wall of the baffle 207.

[0058] Specifically, when the third rotating column 303 rotates, it synchronously drives the second gear 304 fixed on the outer ring surface in the middle of the third rotating column 303 to rotate. During the rotation, it drives the chain 305 on its outer ring surface to transmit power, and during the transmission, it drives the third gear 306 to rotate. Since the third gear 306 rotates on the inner wall of the baffle 207 and the first rotating column 208 rotates on the side of the baffle 207, the first rotating column 208 will not rotate when the third gear 306 rotates.

[0059] When the chain 305 is in motion, since the fourth gear 307 has the same size as the third gear 306 and the axes of the fourth gear 307, the second gear 304, and the third gear 306 are on the same horizontal plane, the fourth gear 307 will also move when the third rotating column 303 rotates. However, since the fourth gear 307 is rotatably connected to the inner wall of the baffle 207, when the chain 305 is in motion, the fourth gear 307 will rotate and simultaneously drive the cam column 308 to rotate through the fixed shaft. Since the fixed shaft rotates through the side wall of the baffle 207, the rotation of the cam column 308 will not affect the operation of the baffle 207. Due to the structure of the cam column 308, it can slightly lift the slowly moving conveyor belt 209 from the inside during rotation, and in conjunction with the transmission of the two conveyor belts 209, further promote the speed at which small pieces of material fall, and further improve the overall working efficiency of the device.

[0060] Working principle: When it is necessary to crush sand and gravel, the cylinder 201 fixed on the side wall of the outer shell 101 is activated. At this time, the cylinder 201 will move downward, and at the same time, it will drive the displacement rod 202 fixedly connected to its top to move downward synchronously. During the movement, since the displacement rod 202 and the connecting rod 203 are rotatably connected, the displacement rod 202 will drive the connecting rod 203 to move downward synchronously. At the same time, since the connecting rod 203 and the rotating rod 204 are also rotatably connected, but the column of the rotating rod 204 is inserted through the inner shell 101, when the displacement rod 202 moves downward, the connecting rod 203 will rotate around the axis of the displacement rod 202, and at the same time, it will pull the rotating rod 204 around the column of the rotating rod 204 synchronously through the axis of the rotating rod 204.

[0061] When the rod of the rotating rod 204 rotates around the column of the rotating rod 204, it will simultaneously drive the limiting post 205 fixed on the side of the rotating rod 204 to slide along the guide of the limiting groove 206. Since the baffle 207 is fixedly connected to the column of the rotating rod 204, the baffle 207 will be pulled to rotate counterclockwise at the same time as the rotating rod 204 rotates. This will then pull the first rotating column 208, the conveyor belt 209, the second rotating column 210 and the protrusion 211 to rotate synchronously. Since there are two symmetrically arranged conveyor belts 209 about the feed port of the outer shell 101, when the two conveyor belts 209 rotate slowly downwards at the same time, the gap will gradually widen. At this time, small pieces of sand and gravel can fall through the gap between the two crushing wheels 103 for crushing, while large pieces of sand and gravel will be stuck between the two conveyor belts 209. This can prevent the small pieces of material from being over-crushed when large and small materials fall and crush together, thereby improving the crushing quality.

[0062] When the baffle 207 rotates counterclockwise around the rotating rod 204, it drives the third rotating column 303, which runs through the other end of the baffle 207, to move synchronously. This, in turn, drives the first gear 302, which is fixed to one end of the third rotating column 303, to move. Since the first gear 302 meshes with the arc-shaped rack 301, and the arc-shaped rack 301 is fixed to the inner wall of the outer casing 101, the first gear 302 rotates counterclockwise when the baffle 207 rotates, thus driving the second rotating column 210, which is fixed to the other end of the third rotating column 303, to perform transmission. Because the two conveyor belts 209 are not completely closed in the initial state and are in an inverted "V" shape, small materials will fall from the inclined surface onto the two conveyor belts 209 during the slow transmission process. Crushing occurs between the crushing wheels 103. As the two baffles 207 rotate continuously, they drive the two conveyor belts 209 to move. At this time, the inclination of the conveyor belts 209 will become larger and larger. Meanwhile, the material remaining between the two conveyor belts 209 is relatively large, and the traction force of the conveyor belts 209 on the material is much less than the weight of the material itself. Therefore, during the synchronous transmission of the two conveyor belts 209, the material will not be carried out of the housing 101. It can only be shaken between the two conveyor belts 209. At this time, the shaking of the large pieces of material can create a new path for the small pieces of material to fall, thereby increasing the falling speed of the small pieces of material. This avoids the situation where large pieces of material are blocked in the gap where the two conveyor belts 209 are tilted, preventing the small pieces of material from falling. This improves the working efficiency of the equipment.

[0063] When the third rotating column 303 rotates, it synchronously drives the second gear 304, which is fixed on the outer ring surface of the middle part of the third rotating column 303, to rotate. During the rotation, the chain 305 on its outer ring surface is driven to rotate, and the third gear 306 is driven to rotate. Since the third gear 306 rotates on the inner wall of the baffle 207 and the first rotating column 208 rotates on the side of the baffle 207, the first rotating column 208 will not rotate when the third gear 306 rotates.

[0064] When the chain 305 is in motion, since the fourth gear 307 has the same size as the third gear 306 and the axes of the fourth gear 307, the second gear 304, and the third gear 306 are on the same horizontal plane, the fourth gear 307 will also move when the third rotating column 303 rotates. However, since the fourth gear 307 is rotatably connected to the inner wall of the baffle 207, when the chain 305 is in motion, the fourth gear 307 will rotate and simultaneously drive the cam column 308 to rotate through the fixed shaft. Since the fixed shaft rotates through the side wall of the baffle 207, the rotation of the cam column 308 will not affect the operation of the baffle 207. Due to the structure of the cam column 308, it can slightly lift the slowly moving conveyor belt 209 from the inside during rotation, and in conjunction with the transmission of the two conveyor belts 209, further promote the speed at which small pieces of material fall, and further improve the overall working efficiency of the device.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated crushing, screening, and sand-mixing device, characterized in that: The integrated device includes a crusher body (1), an opening and closing material limiting mechanism (2) is provided on the top of the crusher body (1), a lifting and conveying mechanism (3) is provided inside the opening and closing material limiting mechanism (2), a filter plate (4) is provided inside the crusher body (1), and a sand mixing box (5) is provided inside the crusher body (1). The filter plate (4) and the sand mixing box (5) are arranged in an orderly manner along the vertical plane. The opening and closing material limiting mechanism (2) includes a baffle (207), and a conveyor belt (209) is provided on the side of the baffle (207). There are two conveyor belts (209), and the opening and closing of the two conveyor belts (209) can make large pieces of material and small pieces of material fall in batches.

2. The integrated crushing, screening, and sand mixing device according to claim 1, characterized in that: The main body (1) of the crusher includes a shell (101), a motor (102) is fixedly connected to the side of the shell (101), the output shaft of the motor (102) is rotatably connected through the side wall of the shell (101), the output shaft of the motor (102) is fixedly connected to a crushing wheel (103), the other end of the crushing wheel (103) is rotatably connected through the inner wall of the shell (101), the other end of the crushing wheel (103) is fixedly connected to a rotating gear (104), there are two crushing wheels (103) and two rotating gears (104), the outer ring surfaces of the two crushing wheels (103) abut against each other, and the outer teeth of the two rotating gears (104) mesh with each other.

3. The integrated crushing, screening, and sand-mixing device according to claim 2, characterized in that: The opening and closing limiting mechanism (2) includes a cylinder (201), which is fixedly connected to the top of the outer shell (101). A displacement rod (202) is fixedly connected to the output end of the cylinder (201), and a connecting rod (203) is rotatably connected to one end of the displacement rod (202). The other end of the linkage (203) is rotatably connected to a rotating rod (204), which is composed of a column and a rod. A limit post (205) is fixedly connected to one side of the rotating rod (204).

4. The integrated crushing, screening, and sand mixing device according to claim 3, characterized in that: The outer shell (101) has a limiting groove (206) on its side. The limiting post (205) is slidably connected inside the limiting groove (206). The rotating rod (204) is rotatably connected inside the outer shell (101). The baffle (207) is fixedly connected to one end of the rotating rod (204).

5. The integrated crushing, screening, and sand-mixing device according to claim 4, characterized in that: The baffle (207) is rotatably connected to a first rotating column (208) on one side. The outer ring of the first rotating column (208) is connected to a conveyor belt (209). The conveyor belt (209) is rotatably connected to a second rotating column (210) inside. The surface of the conveyor belt (209) is fixedly connected with protrusions (211). Multiple sets of protrusions (211) are provided and are evenly and equidistantly distributed on the surface of the conveyor belt (209).

6. The integrated crushing, screening, and sand-mixing device according to claim 5, characterized in that: The limiting groove (206) is designed to prevent the connecting rod (203) and the rotating rod (204) from being on the same straight line when the displacement rod (202) descends. The baffle (207) has a cavity inside.

7. The integrated crushing, screening, and sand mixing device according to claim 6, characterized in that: The lifting and conveying mechanism (3) includes an arc-shaped rack (301) fixedly connected to the inner wall of the outer shell (101). A first gear (302) meshes with the side of the arc-shaped rack (301). A third rotating column (303) is fixedly connected to the middle of the first gear (302). The third rotating column (303) is rotatably connected through the inside of the baffle (207). A second gear (304) is fixedly connected to the outer ring surface of the middle of the third rotating column (303). The other end of the third rotating column (303) is fixedly connected to one end of the second rotating column (210).

8. The integrated crushing, screening, and sand mixing device according to claim 7, characterized in that: The outer ring surface of the second gear (304) is connected to a chain (305), the inner ring surface of the chain (305) is rotatably connected to a third gear (306), and a fourth gear (307) is provided between the second gear (304) and the third gear (306). The fourth gear (307) is connected to the chain (305) in a driving connection.

9. The integrated crushing, screening, and sand mixing device according to claim 8, characterized in that: The fourth gear (307) is fixedly connected to a cam column (308) in the middle. The fourth gear (307) and the cam column (308) are connected by a fixed shaft, and the fixed shaft is rotatably connected to the side wall of the baffle (207).

10. The integrated crushing, screening, and sand-mixing device according to claim 9, characterized in that: During the swinging process, the baffle (207) will drive the first gear (302) to move synchronously. Since the first gear (302) and the arc rack (301) are meshed, the baffle (207) can drive the first gear (302) to rotate while swinging, thereby driving the second rotating column (210) to rotate, and then driving the conveyor belt (209) to drive the material in the opposite direction to the material, causing large pieces of material to jump between the two conveyor belts (209) and increasing the speed at which small pieces of material fall.

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