Mine gravel crushing device with screening function

Abstract

The invention relates to the field of crushers, and discloses a mine gravel crushing device with a screening function, the mine gravel crushing device comprises a shell and a telescopic air cylinder I mounted in the shell, a crushing bin is arranged in the shell, and two crushing wheels are symmetrically mounted in the crushing bin; a screening mechanism and a conveying mechanism used for conveying gravel with different particle sizes to different directions are further arranged below the shell, the conveying mechanism is arranged on the side face of the screening mechanism, and in order to keep screening efficiency and prevent screening holes from being blocked, when the first tower-shaped screening plate rotates, the edges of the screening holes can slightly rub and extrude the adjusting rubber blocks, and therefore the screening efficiency is improved. The mechanical effect is favorable for removing fine particles or impurities attached to the screen holes and keeping the screen holes unobstructed, in addition, the conical design of the adjusting rubber block plays a key role in the process, the conical tip of the adjusting rubber block can penetrate into the screen holes, and the cleaning effect is enhanced.

Description

Technical Field

[0001] The invention relates to the field of crushers, in particular to a mining sand and gravel crushing device with a screening function. Background Art

[0002] A mining sand and gravel crushing device with screening function plays a vital role in the mining and resource processing industry. With the continuous advancement of global infrastructure construction and the rapid development of industrialization and urbanization, the demand for sand and gravel aggregates, metal mines, solid waste and environmental protection continues to grow. These fields have strict requirements on the particle size, shape and quantity of raw materials such as sand and gravel. Therefore, crushing and screening equipment has become an indispensable key equipment. Traditional crushing and screening equipment usually separates the two processes of crushing and screening. Users need to design sand and gravel production lines according to their own needs. However, since users often lack in-depth understanding of the equipment, this design method often fails to achieve optimal efficiency. In addition, traditional screening equipment is prone to screen clogging when processing wet materials, affecting screening efficiency and output. At the same time, it also requires a large amount of water resources for cleaning, which does not meet the requirements of environmental protection and water conservation. Summary of the invention

[0003] The invention provides a mining sand and gravel crushing device with a screening function, which overcomes the shortcomings described in the background technology.

[0004] The technical solution adopted by the present invention to solve its technical problem is: A mining sand and stone crushing device with screening function comprises a shell and a telescopic cylinder 1 installed in the shell, wherein a crushing bin is provided in the shell, and two crushing wheels are symmetrically installed in the crushing bin, and the two crushing wheels are respectively driven to rotate by a driving motor, and the telescopic cylinder 1 is arranged above the two crushing wheels, and a limited lifting block is installed on the output shaft of the telescopic cylinder 1, so as to drive the limited lifting block to move toward the crushing wheel through the telescopic cylinder 1; A screening mechanism and a transmission mechanism for transmitting sand and gravel of different particle sizes to different directions are also provided below the shell. The transmission mechanism is arranged on the side of the screening mechanism. The screening mechanism includes a screening chamber and a tower-shaped screen plate 1 and a tower-shaped screen plate 2 installed in the screening chamber. The tower-shaped screen plate 2 is rotatably installed in the screening chamber. The tower-shaped screen plate 1 is movably installed in the screening chamber. The tower-shaped screen plate 2 is arranged on the lower side of the tower-shaped screen plate. The tower-shaped screen plate 1 is driven to rotate by a driving gear installed on an output shaft of a motor. A fixing frame is provided at the lower end of the second tower-shaped screen plate, and the fixing frame is connected to the output shaft of a second telescopic cylinder. Screen holes are provided on the surface of the first tower-shaped screen plate, and an adjusting rubber block is provided on the surface of the second tower-shaped screen plate corresponding to the screen holes. The adjusting rubber block has a conical structure, and the end with a smaller diameter is arranged toward the screen hole, so that the distance between the rubber block and the screen hole can be controlled by the second telescopic cylinder, thereby changing the size of sand and gravel that can pass through the screen hole.

[0005] A preferred technical solution, the screening chamber is an hourglass-shaped structure, the screening chamber includes two connected chambers one and two, the middle part of the lower end of the chamber two is connected to the outside through a discharge port, the tower-shaped screen plate two is installed in the chamber two, the chamber two is close to the connection end of the tower-shaped screen plate one and the driving gear, and a drop channel is provided, and the end of the drop channel is connected to the side of the discharge port; The lower peripheral surface of the tower-shaped sieve plate 1 is arrayed with latching teeth, and the tower-shaped sieve plate 1 is meshed with the motor 1 through the latching teeth arranged on its side.

[0006] A preferred technical solution is that one edge of the tower-shaped screen plate is convex, and a step edge is provided at the corresponding position of the screening cavity and the convex surface, and a chamber for temporarily storing sand and gravel is formed between the step edge and the edge of the tower-shaped screen plate.

[0007] A preferred technical solution is that the fixing frame is a W-shaped structure, the middle part of the fixing frame is convex, and a drop hole for discharging sand and gravel is provided between the edge of the fixing frame and the convexity in the middle part; The connection surface between the raised surface in the middle of the fixing frame and the drop hole is arranged in an inclined shape.

[0008] A preferred technical solution, the transmission mechanism includes a conveyor belt, a guide plate, and a turntable for driving the guide plate to rotate, the conveyor belt is arrayed around the guide plate, the conveyor belt includes a belt body, symmetrically arranged transmission wheels and a second motor, the belt body is wrapped around the two transmission wheels, one of the transmission wheels and the output shaft of the second motor form a belt drive; The edge to the middle of the transmission wheel presents a gradually deepening arc-shaped surface. When the belt body is wrapped around the transmission wheel, the middle of the belt body is concave inward. The upper end horizontal plane of the belt body is lower than the lower end horizontal plane of the guide plate, so that sand and gravel of different sizes can be discharged onto different conveyor belts by rotating the guide plate. The two side edges of the belt body are provided with raised convex strips.

[0009] Compared with the prior art, this technical solution has the following advantages: When the sand and gravel that have been initially crushed enter the screening chamber, they first come into contact with the tower-shaped screen plate 1 located above. The surface of this screen plate is covered with carefully designed screen holes. These screen holes are set in different sizes according to the needs to initially separate the sand and gravel particles that meet the requirements. Then, the tower-shaped screen plate 2 plays a vital role in the screening process with its unique structure and position. It is located below the tower-shaped screen plate 1, and its surface is equipped with adjustable conical adjustment rubber blocks. These rubber blocks can not only adjust the distance between the screen holes and the screen holes according to actual needs through the precise control of the telescopic cylinder 2, so as to achieve accurate screening of sand and gravel of different particle sizes, but also have self-cleaning function due to its conical structure, reducing the risk of blockage of the screen holes. During the working process, the sand and gravel are effectively classified into products of different particle sizes through the synergistic effect of the two layers of screen plates under the action of gravity and vibration. The larger particles of sand and gravel are blocked by the upper screen plate and move downward to the lower edge of the tower-shaped screen plate, while the smaller particles pass through the screen holes and continue to be further screened by the lower screen plate until the required particle size requirements are reached.

[0010] In order to maintain the screening efficiency and prevent the sieve holes from being blocked, the present invention can cleverly drive the active gear to rotate through the motor 1, thereby driving the tower-shaped screen plate 1 to rotate in the screening chamber. This rotation action not only promotes the uniform distribution of sand and gravel on the screen plate and improves the screening efficiency, but more importantly, it utilizes the relative movement between the tower-shaped screen plate 1 and the adjusting rubber block on the tower-shaped screen plate 2 to achieve dynamic cleaning of the sieve holes. When the tower-shaped screen plate 1 rotates, the edge of its sieve holes will produce slight friction and extrusion with the adjusting rubber block. This mechanical action helps to remove fine particles or impurities attached to the sieve holes and keep the sieve holes unobstructed. In addition, the conical design of the adjusting rubber block also plays a key role in this process. The cone tip can penetrate into the interior of the sieve holes, further enhancing the cleaning effect. Through this innovative self-rotation cleaning mechanism, the present invention effectively solves the common problem of screen blocking in traditional screening equipment and ensures the stable improvement of screening efficiency and output. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 This is an overall diagram of the present invention.

[0013] Figure 2 Schematic diagram of the screening mechanism.

[0014] Figure 3 It is a schematic diagram of the structure of tower-shaped sieve plate one and tower-shaped sieve plate two.

[0015] Figure 4 for Figure 3 Enlarged schematic diagram of point a in the middle.

[0016] Figure 5 A schematic diagram of the structure of the fixing frame.

[0017] Figure 6 Schematic diagram of the transmission mechanism.

[0018] Figure 7 Schematic diagram of the conveyor belt.

[0019] Figure 8 Schematic diagram of the belt.

[0020] In the figure: housing 1, crushing wheel 11, driving motor 12; Telescopic cylinder 1 2, limit lifting block 21; Screening mechanism 3, screening chamber 31, discharge port 311, drop channel 312, step edge 313, tower sieve plate 1 32, sieve hole 321, tower sieve plate 2 33, fixing frame 331, drop hole 3311, telescopic cylinder 2 332, adjusting rubber block 333, driving gear 34, motor 1 341; Transmission mechanism 4, conveyor belt 41, belt body 411, convex strip 4111, transmission wheel 412, motor 2 413, guide plate 42, turntable 43. DETAILED DESCRIPTION

[0021] like Figures 1 to 8 As shown, the present invention proposes a mining sand and stone crushing device with screening function, including a shell 1 and a telescopic cylinder 2 installed in the shell 1, the shell 1 has a crushing bin, and two crushing wheels 11 are symmetrically installed in the crushing bin, and the two crushing wheels 11 are respectively driven to rotate by a driving motor 12, and the telescopic cylinder 2 is arranged above the two crushing wheels 11, and a limited lifting block 21 is installed on the output shaft of the telescopic cylinder 2, so that the limited lifting block 21 is driven by the telescopic cylinder 2 to move toward the crushing wheel 11; A screening mechanism 3 and a transmission mechanism 4 for transmitting sand and gravel of different particle sizes to different directions are also provided below the housing 1. The transmission mechanism 4 is arranged on the side of the screening mechanism 3. The screening mechanism 3 includes a screening chamber 31 and a tower-shaped screen plate 1 32 and a tower-shaped screen plate 2 33 installed in the screening chamber 31. The tower-shaped screen plate 2 33 is rotatably installed in the screening chamber 31. The tower-shaped screen plate 1 32 is movably installed in the screening chamber 31. The tower-shaped screen plate 2 33 is arranged on the lower side of the tower-shaped screen plate 1 32. The tower-shaped screen plate 1 32 is driven to rotate by a driving gear 34 installed on the output shaft of the motor 1 341. A fixing frame 331 is provided at the lower end of the tower-shaped sieve plate 33, and the fixing frame 331 is connected to the output shaft of a telescopic cylinder 332. A sieve hole 321 is provided on the surface of the tower-shaped sieve plate 32, and an adjusting rubber block 333 is provided on the surface of the tower-shaped sieve plate 33 corresponding to the sieve hole 321. The adjusting rubber block 333 is in a conical structure, and the end with a smaller diameter is arranged toward the sieve hole 321, so that the distance between the adjusting rubber block 333 and the sieve hole 321 can be controlled by the telescopic cylinder 332, thereby changing the size of the sand and gravel that can pass through the sieve hole 321; In the mining sand and gravel crushing device, the ingenious cooperation between the tower-shaped screen plate 1 32 and the tower-shaped screen plate 2 33 is the key to achieving efficient screening. When the sand and gravel that have been initially crushed enter the screening chamber 31, they first contact the tower-shaped screen plate 1 32 located above. The surface of this screen plate is covered with carefully designed screen holes 321. These screen holes are set in different sizes according to the needs to initially separate the sand and gravel particles that meet the requirements. Then, the tower-shaped screen plate 2 33, with its unique structure and position, plays a vital role in the screening process. It is located below the tower-shaped screen plate 1 32, and its surface is equipped with an adjustable conical adjustment rubber block 321. 33, these rubber blocks can not only adjust the distance between them and the sieve hole 321 according to actual needs through the precise control of the telescopic cylinder 332, so as to achieve accurate screening of sand and gravel of different particle sizes, but also have a self-cleaning function due to their conical structure, reducing the risk of clogging of the sieve hole. During the working process, the sand and gravel are effectively classified into products of different particle sizes through the synergistic effect of the two layers of sieve plates under the action of gravity and vibration. The larger particles of sand and gravel are blocked by the upper sieve plate and move downward to the lower end edge of the tower-shaped sieve plate 32, while the smaller particles pass through the sieve hole and continue to be further screened by the lower sieve plate until the required particle size requirement is reached; In order to maintain the screening efficiency and prevent the sieve holes from being blocked, the present invention can cleverly drive the driving gear 34 to rotate through the motor 341, thereby driving the tower-shaped screen plate 32 to rotate in the screening chamber 31. This rotation action not only promotes the uniform distribution of sand and gravel on the screen plate and improves the screening efficiency, but more importantly, it utilizes the relative movement between the tower-shaped screen plate 32 and the adjusting rubber block 333 on the tower-shaped screen plate 33 to achieve dynamic cleaning of the sieve holes 321. When the tower-shaped screen plate 32 rotates, the edge of its sieve hole 321 will produce slight friction and extrusion with the adjusting rubber block 333. This mechanical action helps to remove fine particles or impurities attached to the sieve holes and keep the sieve holes unobstructed. In addition, the conical design of the adjusting rubber block 333 also plays a key role in this process. The cone tip can penetrate deep into the sieve hole, further enhancing the cleaning effect. Through this innovative self-rotation cleaning mechanism, the present invention effectively solves the common problem of screen blocking in traditional screening equipment and ensures the stable improvement of screening efficiency and output.

[0022] Furthermore, the screening chamber 31 is an hourglass-shaped structure, and the screening chamber 31 includes two interconnected chambers 1 and 2. The middle of the lower end of the chamber 2 is connected to the outside through a discharge port 311. The tower-shaped sieve plate 2 33 is installed in the chamber 2. The chamber 2 is close to the connection end of the tower-shaped sieve plate 1 32 and the driving gear 34. A drop channel 312 is provided, and the end of the drop channel 312 is connected to the side of the discharge port 311. The lower circumferential surface of the tower-shaped sieve plate 1 32 is arrayed with latching teeth, and the tower-shaped sieve plate 1 32 is meshed with the motor 1 341 through the latching teeth arranged on its side.

[0023] Furthermore, the edge of the tower-shaped screen plate 32 is convex, and a step edge 313 is provided at the corresponding position of the sieving cavity 31 and the convex surface, and a chamber for temporarily storing sand and gravel is formed between the step edge 313 and the edge of the tower-shaped screen plate 32; The design of the drop channel 312 plays a crucial role in this structure. It is located in the chamber 2 near the connection end of the tower-shaped screen plate 1 32 and the driving gear 34, and its end is cleverly connected to the side of the discharge port 311. When the tower-shaped screen plate 1 32 rotates under the drive of the motor 1 341, the larger particles of sand and gravel that have been screened will slide along the raised edge of the screen plate and accumulate in the temporary storage chamber formed by the step edge 313 and the edge of the screen plate. This chamber not only serves as a buffer zone to temporarily store those larger particles that fail to pass through the sieve holes, but also through its special The position and shape create conditions for the subsequent discharge of sand and gravel. During the screening process, as the gap between the tower-shaped screen plate 1 32 and the tower-shaped screen plate 2 33 is adjusted, the sand and gravel particles stored in the chamber will be accurately guided to the discharge port 311 through the drop channel 312 under the combined action of gravity and the rotation of the screen plate, and finally discharged from the device. This design not only ensures the continuity and efficiency of the screening process, but also meets the production needs of sand and gravel of different particle sizes through precise discharge control. At the same time, it also reduces the loss and waste of sand and gravel in the screening process and improves the utilization rate of resources.

[0024] The fixing frame 331 is a W-shaped structure, the middle part of the fixing frame 331 is convex, and a drop hole 3311 for discharging sand and gravel is arranged between the edge of the fixing frame 331 and the convex part in the middle part; The connection surface between the raised surface in the middle of the fixing frame 331 and the drop hole 3311 is arranged in an inclined shape.

[0025] Furthermore, the transmission mechanism 4 includes a conveyor belt 41, a guide plate 42, and a turntable 43 for driving the guide plate 42 to rotate. The conveyor belt 41 is arrayed around the guide plate 42. The conveyor belt 41 includes a belt body 411, symmetrically arranged transmission wheels 412 and a second motor 413. The belt body 411 is wrapped around the two transmission wheels 412, and one of the transmission wheels 412 and the output shaft of the second motor 413 form a belt drive. The edge to the middle of the transmission wheel 412 is a gradually deepening arc surface. When the belt body 411 is wrapped around the transmission wheel 412, the middle of the belt body 411 is concave inward. This design helps to maintain the stability of sand and gravel during the transmission process, especially when the conveyor belt is tilted or disturbed by external interference, it can effectively prevent the sand and gravel from scattering or shifting due to bumps. The arc surface design increases the contact area between the transmission wheel and the belt body, thereby improving the carrying capacity of the conveyor belt. This design enables the conveyor belt to better disperse the pressure brought by sand and gravel, reduce the risk of wear and damage, and extend the service life of the conveyor belt. The upper end horizontal plane of the belt body 411 is lower than the lower end horizontal plane of the guide plate 42, so that sand and gravel of different sizes can be discharged to different conveyor belts 41 by rotating the guide plate 42, and the two side edges of the belt body 411 are provided with raised convex strips 4111.

[0026] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A mining sand and gravel crushing device with screening function, characterized in that: The invention comprises a housing (1) and a telescopic cylinder (2) installed in the housing (1), wherein the housing (1) has a crushing chamber, wherein two crushing wheels (11) are symmetrically installed in the crushing chamber, wherein the two crushing wheels (11) are respectively driven to rotate by a driving motor (12), and the telescopic cylinder (2) is arranged above the two crushing wheels (11), and a limit lifting block (21) is installed on the output shaft of the telescopic cylinder (2), so that the limit lifting block (21) is driven by the telescopic cylinder (2) to move toward the crushing wheel (11); A screening mechanism (3) and a transmission mechanism (4) for transmitting sand and gravel of different particle sizes to different directions are also provided below the housing (1). The transmission mechanism (4) is arranged on the side of the screening mechanism (3). The screening mechanism (3) comprises a screening chamber (31) and a tower-shaped screen plate 1 (32) and a tower-shaped screen plate 2 (33) installed in the screening chamber (31). The tower-shaped screen plate 2 (33) is rotatably installed in the screening chamber (31). The tower-shaped screen plate 1 (32) is movably installed in the screening chamber (31). The tower-shaped screen plate 2 (33) is arranged on the lower side of the tower-shaped screen plate 1 (32). The tower-shaped screen plate 1 (32) is driven to rotate by a driving gear (34) installed on the output shaft of the motor 1 (341). A fixing frame (331) is provided at the lower end of the second tower-shaped screen plate (33), and the fixing frame (331) is connected to the output shaft of a second telescopic cylinder (332). A screen hole (321) is provided on the surface of the first tower-shaped screen plate (32), and an adjusting rubber block (333) is provided on the surface of the second tower-shaped screen plate (33) corresponding to the screen hole (321). The adjusting rubber block (333) is in a conical structure, and the end with a smaller diameter is arranged toward the screen hole (321), so that the distance between the adjusting rubber block (333) and the screen hole (321) can be controlled by the second telescopic cylinder (332), thereby changing the size of sand and gravel that can pass through the screen hole (321).

2. The mining sand and gravel crushing device with screening function according to claim 1 is characterized in that: The screening chamber (31) is an hourglass-shaped structure. The screening chamber (31) comprises two interconnected chambers, chamber 1 and chamber 2. The middle of the lower end of chamber 2 is connected to the outside through a discharge port (311). The tower-shaped sieve plate 2 (33) is installed in chamber 2. A drop channel (312) is provided at the connection end of chamber 2 close to the tower-shaped sieve plate 1 (32) and the driving gear (34). The end of the drop channel (312) is connected to the side of the discharge port (311). The lower peripheral surface of the tower-shaped sieve plate 1 (32) is provided with a latching tooth array, and the tower-shaped sieve plate 1 (32) is meshed with the motor 1 (341) through the latching teeth arranged on its side.

3. The mining sand and gravel crushing device with screening function according to claim 1 is characterized in that: The edge of the tower-shaped screen plate (32) is convex, and a step edge (313) is provided at a position corresponding to the convex surface of the screening cavity (31), and a chamber for temporarily storing sand and gravel is formed between the step edge (313) and the edge of the tower-shaped screen plate (32).

4. The mining sand and gravel crushing device with screening function according to claim 3 is characterized in that: The fixing frame (331) is a W-shaped structure, the middle portion of the fixing frame (331) is convex, and a drop hole (3311) for discharging sand and gravel is provided between the edge of the fixing frame (331) and the convex portion in the middle portion; The connection surface between the raised surface in the middle of the fixing frame (331) and the drop hole (3311) is arranged in an inclined shape.

5. The mining sand and gravel crushing device with screening function according to claim 1, characterized in that: The transmission mechanism (4) comprises a conveyor belt (41), a guide plate (42), and a turntable (43) for driving the guide plate (42) to rotate. The conveyor belt (41) is arrayed around the guide plate (42). The conveyor belt (41) comprises a belt body (411), symmetrically arranged transmission wheels (412), and a second motor (413). The belt body (411) is wrapped around the two transmission wheels (412), and one of the transmission wheels (412) and the output shaft of the second motor (413) form a belt drive. The edge to the middle of the driving wheel (412) presents a gradually deepening arc-shaped surface, and when the belt body (411) is wrapped around the driving wheel (412), the middle of the belt body (411) is recessed inward, and the upper end horizontal plane of the belt body (411) is lower than the lower end horizontal plane of the guide plate (42), so that sand and gravel of different sizes can be discharged onto different conveyor belts (41) by rotating the guide plate (42); Raised convex strips (4111) are provided on both side edges of the belt body (411).

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