Crushing device

Abstract

The utility model provides a crushing device, which belongs to the technical field of sand making and comprises a crushing box and a discharge port arranged on one side of the lower end of the crushing box, a first screen is arranged in an inner cavity of the crushing box and positioned above the discharge port, sliding grooves are arranged at two ends of the inner cavity of the crushing box and close to the lower portion of the first screen, and a second screen is slidably connected between the two sliding grooves. The upper end of the second screen is in contact with the lower end of the first screen, meshes in the second screen and meshes in the first screen are staggered one by one, a discharging opening is formed in the side, away from the discharging opening, of the crushing box, the uppermost end of the side, close to the discharging opening, of the first screen is connected with the lowermost end of the discharging opening, and a crushing mechanism used for crushing gravel is further arranged at the upper end of the crushing box. According to the utility model, the screen mesh II is periodically poked, so that a staggered channel between the meshes and the screen holes can be instantly opened, clamped materials are promoted to smoothly fall off, the screening efficiency is effectively improved, and blockage is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of sand making technology, specifically relating to a crushing device. Background Technology

[0002] In sand making, the core step involves using specialized crushing machinery to convert various raw stones into sand particles that meet construction engineering standards. This includes the precision processing of diverse raw materials such as natural rocks, pebbles, industrial tailings, and even construction waste. Currently, specialized crushing equipment is often used to crush materials.

[0003] Existing mainstream crushing technologies often rely on high-speed rotating crushing rollers to efficiently crush raw materials, followed by a multi-stage screening process that uses screens of different sizes to filter out sand of the ideal particle size. Although this can achieve material screening, the size of the crushed product can fit into the screen pores, causing blockage and affecting screening efficiency and continuous operation capability. Utility Model Content

[0004] In view of this, the present invention provides a crushing device that can periodically move the second screen to instantly open the misaligned channel between the mesh and the screen opening, so as to facilitate the smooth release of stuck materials, effectively improve screening efficiency and prevent blockage.

[0005] To solve the above-mentioned technical problems, this utility model provides a crushing device, including a crushing box and a discharge port located on one side of the lower end of the crushing box. A screen is provided in the inner cavity of the crushing box above the discharge port. Sliding grooves are provided at both ends of the inner cavity of the crushing box near the lower part of the screen. A second screen is slidably connected between the two sliding grooves. The upper end of the second screen contacts the lower end of the first screen. The mesh openings on the second screen are misaligned with the screen holes on the first screen. A discharge port is provided on the side of the crushing box away from the discharge port. The uppermost end of the first screen near the discharge port is connected to the lowermost end of the discharge port. The upper end of the crushing box is also provided with a crushing mechanism for crushing sand and gravel, which periodically moves the second screen, causing it to slide slightly under the guidance of the sliding grooves, instantly opening the misaligned channel between the mesh openings and the screen holes, allowing stuck materials to fall off smoothly, effectively improving screening efficiency and preventing blockage.

[0006] Both screen one and screen two are set with the side of the crushing box near the discharge port tilted downwards towards the discharge port. This helps the crushed material slide more smoothly towards the discharge port, using gravity to accelerate the natural movement of the material, reducing the risk of blockage and improving processing efficiency.

[0007] The bottom of the crushing box is inclined downwards towards the discharge port from the side closest to the discharge port, which facilitates the guidance of the screened material.

[0008] A fixing plate is provided at the lower end of the side of the screen away from the discharge port. Multiple springs are provided between the side of the fixing plate near the discharge port and the wall of the crushing box cavity away from the discharge port, which provides elastic restoring force for the screen.

[0009] A rotating rod is rotatably connected to the inner cavity of the crushing box near the bottom of the two chute. Both ends of the rotating rod are equipped with cams, and both ends of the screen are equipped with protrusions. The cams are respectively configured to cooperate with the adjacent protrusions on the same side. That is, when the cam rotates, it will periodically push the protrusions on the screen, thereby causing the screen to slide slightly under the guidance of the chute.

[0010] The crushing mechanism includes two crushing rollers symmetrically rotatably connected to the inner cavity of the crushing box above the screen. Each crushing roller has a gear at one end, and the two gears mesh with each other. A motor is located at the end of the crushing box away from the gears. The output shaft of the motor is fixedly connected to the end of one crushing roller away from the gears. That is, the sand and gravel material is fed into the crushing box and crushed by the two crushing rollers rotating in opposite directions.

[0011] It also includes a synchronous drive assembly, which is used to drive the rotating rod to rotate synchronously. The other crushing roller has a drive pulley at the end away from the gear, and a driven pulley at the end of the rotating rod near the drive pulley. The drive pulley and the driven pulley are connected by belt drive, which serves as a synchronous drive.

[0012] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0013] 1. The crushed material falls onto the first guide screen, and is screened through the opening formed by the misalignment of the mesh and the screen holes. Material larger than the opening is discharged through the discharge port, while material smaller than the opening continues to fall and is discharged through the outlet. This achieves the screening of the crushed sand and gravel. During this process, the driving pulley drives the driven pulley, the rotating rod and the cams at both ends to rotate synchronously through the belt. The cams periodically actuate the protrusions on the second screen, causing the second screen to slide slightly under the guidance of the chute, instantly opening the misalignment channel between the mesh and the screen holes, allowing stuck material to fall off smoothly, effectively improving screening efficiency and preventing blockage.

[0014] 2. When the motor starts, its output shaft drives one of the crushing rollers and its gear to rotate synchronously. When the gear rotates, it drives the other crushing roller and its drive pulley to rotate synchronously through the gear meshing with it. At this time, the sand and gravel material is fed into the crushing box and crushed by the two crushing rollers rotating in opposite directions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a crushing device according to the present invention;

[0016] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is an enlarged structural diagram of point A in this utility model;

[0019] Figure 5 This is an enlarged structural diagram of point B in this utility model;

[0020] Figure 6 This is a schematic diagram of the fixing plate and spring structure of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 100, crushing box; 101, screen one; 102, chute; 103, screen two; 104, discharge port; 105, fixed plate; 106, spring; 107, rotating rod; 108, cam; 109, protruding column; 200, crushing roller; 201, gear; 202, motor; 300, driving pulley; 301, driven pulley. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-6 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0023] like Figure 1-6 As shown:

[0024] This embodiment provides a crushing device, including a crushing box 100 and a discharge port disposed on one side of the lower end of the crushing box 100. A screen 101 is provided in the inner cavity of the crushing box 100 above the discharge port. Slide grooves 102 are provided at both ends of the inner cavity of the crushing box 100 near the lower part of the screen 101. A screen 103 is slidably connected between the two slide grooves 102. The slide grooves 102 provide sliding support for the screen 102. The upper end of the screen 103 is connected to the screen 101. The lower ends of 101 are in contact to prevent material from entering between screen 2 103 and screen 101. The two are in contact but do not affect sliding. The mesh holes on screen 2 103 and the screen holes on screen 101 are misaligned. The crushing box 100 is provided with a discharge port 104 on the side away from the discharge port. The uppermost end of screen 101 near the discharge port 104 is connected to the lowermost end of the discharge port 104. The upper end of the crushing box 100 is also provided with a crushing mechanism for crushing sand and gravel.

[0025] The crushed material falls onto the guide screen 101 after being crushed by the crushing mechanism. The material is screened through the opening formed by the misalignment of the mesh and the screen holes. Material larger than the opening is discharged through the discharge port 104, while material smaller than the opening continues to fall and is discharged through the discharge port. This achieves the screening of the crushed sand and gravel. The screen 103 is periodically moved, causing it to slide slightly under the guidance of the chute 102. This instantly opens the misalignment channel between the mesh and the screen holes, allowing stuck material to fall off smoothly, effectively improving screening efficiency and preventing blockage.

[0026] like Figure 1-6 As shown, screen 101 and screen 2 103 are both inclined downwards towards the discharge port 104 on the side of the crushing box 100 near the discharge port. The inclined screen 101 and screen 2 103 can help the crushed material slide more smoothly towards the discharge port, use gravity to accelerate the natural movement of the material, reduce the risk of blockage, and improve the processing efficiency.

[0027] like Figure 1-6 As shown, the bottom of the crushing box 100 is inclined downward towards the discharge port on the side near the discharge port 104, which facilitates the guidance of the screened material so that the screened material is discharged from the discharge port.

[0028] like Figure 3-6 As shown, a fixing plate 105 is provided at the lower end of the side of the screen 103 away from the discharge port 104. Multiple springs 106 are provided between the side of the fixing plate 105 near the discharge port and the wall of the inner cavity of the crushing box 100 away from the discharge port 104. The fixing plate 105 is used to provide fixed support for the springs 106, and the springs 106 use their own elastic characteristics to provide elastic restoring force for the screen 103.

[0029] like Figure 1-6 As shown, a rotating rod 107 is rotatably connected to the inner cavity of the crushing box 100 near the bottom of the two slide grooves 102. A rotating hole is provided in the inner cavity of the crushing box 100 near the bottom of the two slide grooves 102 to provide rotational support for the rotating rod 107. A cam 108 is provided at both ends of the rotating rod 107. A protrusion 109 is provided at both ends of the screen 103. The protrusion on the outside of the cam 108 is used to move the protrusion 109. The cam 108 is respectively configured to cooperate with the adjacent protrusion 109 on the same side.

[0030] When the cam 108 rotates, it periodically actuates the protrusion 109 on the screen 103, thereby causing the screen 103 to slide slightly under the guidance of the groove 102.

[0031] like Figure 1-3As shown, the crushing mechanism includes two crushing rollers 200 symmetrically rotatably connected to the inner cavity of the crushing box 100 above the screen 101. The inner cavity of the crushing box 100 above the screen 101 is provided with a rotating hole 2 for providing rotational support for the two crushing rollers 200. One end of each of the two crushing rollers 200 is provided with a gear 201, which meshes with each other. The two gears 201 cooperate to drive the two crushing rollers 200 to rotate in opposite directions at the same amplitude. A motor 202 is provided at the end of the crushing box 100 away from the gear 201. The output shaft of the motor 202 is fixedly connected to the end of one of the crushing rollers 200 away from the gear 201. The rotation of the output shaft of the motor 202 drives the crushing roller 200 and its auxiliary mechanism fixedly connected thereto to rotate synchronously.

[0032] When the motor 202 starts, its output shaft drives one of the crushing rollers 200 and its gear 201 to rotate synchronously. When the gear 201 rotates, it drives the other crushing roller 200 and its drive pulley 300 to rotate synchronously through the gear 201 meshing with it. At this time, the sand and gravel material is sent into the crushing box 100 and crushed by the two crushing rollers 200 rotating in opposite directions.

[0033] like Figure 1-5 As shown, it also includes a synchronous drive assembly, which is used to drive the rotating rod 107 to rotate synchronously. Another crushing roller 200 has a drive pulley 300 at the end away from the gear 201, and a driven pulley 301 at the end of the rotating rod 107 near the drive pulley 300. The drive pulley 300 and the driven pulley 301 are connected by a belt drive, and the two cooperate to drive the rotating rod 107 to rotate synchronously.

[0034] When the other crushing roller 200 and its driving pulley 300 rotate synchronously, the driven pulley 301, the rotating rod 107 and the cams 108 at both ends are driven to rotate synchronously through the belt, thereby playing a synchronous driving role.

[0035] The working principle of the crushing device provided by this utility model is as follows: When the motor 202 starts, its output shaft drives one of the crushing rollers 200 and its gear 201 to rotate synchronously. When the gear 201 rotates, it drives the other crushing roller 200 and its drive pulley 300 to rotate synchronously through the gear 201 meshing with it. At this time, the sand and gravel material is fed into the crushing box 100, where it is crushed by the two crushing rollers 200 rotating in opposite directions. The crushed material falls onto the guide screen 101, and is screened through the opening formed by the misalignment of the mesh and the screen holes. Material larger than the opening is discharged through the discharge port 104, while material smaller than the opening is discharged. The material continues to fall and is then discharged from the outlet, thus achieving the screening operation of the crushed sand and gravel. During this process, the active pulley 300 drives the driven pulley 301, the rotating rod 107 and the cams 108 at both ends to rotate synchronously through the belt. When the cams 108 rotate, they periodically push the protrusions 109 on the screen mesh 103, thereby causing the screen mesh 103 to slide slightly under the guidance of the chute 102, instantly opening the misalignment channel between the mesh and the screen holes, so that the stuck material can fall off smoothly, effectively improving the screening efficiency and preventing blockage. After the cams 108 and the protrusions 109 separate, the screen mesh 103 immediately resets under the action of the spring 106.

[0036] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A crushing device, characterized in that: The device includes a crushing box (100) and a discharge port located on one side of the lower end of the crushing box (100). A screen (101) is provided in the inner cavity of the crushing box (100) above the discharge port. Sliding grooves (102) are provided at both ends of the inner cavity of the crushing box (100) near the lower part of the screen (101). A screen (103) is slidably connected between the two sliding grooves (102). The upper end of the screen (103) is connected to the screen (1). The lower end of (101) is in contact with each other, the mesh holes on the second screen (103) are misaligned with the screen holes on the first screen (101), the crushing box (100) is provided with a discharge port (104) on the side away from the discharge port, the uppermost end of the first screen (101) near the discharge port (104) is connected to the lowermost end of the discharge port (104), and the upper end of the crushing box (100) is also provided with a crushing mechanism for crushing sand and gravel.

2. The crushing device as described in claim 1, characterized in that: Both screen one (101) and screen two (103) are inclined downwards from the side of the crushing box (100) near the discharge port towards the discharge port (104).

3. The crushing device as described in claim 1, characterized in that: The bottom of the crushing box (100) is inclined downward toward the discharge port on the side near the discharge port (104).

4. The crushing device as described in claim 1, characterized in that: The lower end of the screen (103) away from the discharge port (104) is provided with a fixing plate (105), and multiple springs (106) are provided between the side of the fixing plate (105) near the discharge port and the wall of the inner cavity of the crushing box (100) away from the discharge port (104).

5. The crushing device as described in claim 1, characterized in that: A rotating rod (107) is rotatably connected to the inner cavity of the crushing box (100) near the two slide grooves (102). Both ends of the rotating rod (107) are provided with cams (108), and both ends of the screen (103) are provided with protrusions (109). The cams (108) are respectively configured to cooperate with the protrusions (109) adjacent to each other on the same side.

6. The crushing device as described in claim 5, characterized in that: The crushing mechanism includes two crushing rollers (200) symmetrically rotatably connected to the inner cavity of the crushing box (100) above the screen (101). One end of each of the two crushing rollers (200) is provided with a gear (201), and the two gears (201) are meshed with each other. The end of the crushing box (100) away from the gear (201) is provided with a motor (202), and the output shaft of the motor (202) is fixedly connected to the end of one of the crushing rollers (200) away from the gear (201).

7. The crushing device as described in claim 6, characterized in that: It also includes a synchronous drive assembly for driving the rotating rod (107) to rotate synchronously. Another crushing roller (200) is provided with a drive pulley (300) at the end away from the gear (201), and a driven pulley (301) is provided at the end of the rotating rod (107) near the drive pulley (300). The drive pulley (300) and the driven pulley (301) are connected by belt drive.

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