Multistage regulating high-efficiency pulverizing device

Abstract

The utility model discloses a kind of multistage regulating high-efficiency pulverizing device, it is related to the technical field of pulverizing equipment, including hollow box, the inside top of box is equipped with adjusting mechanism, the position of adjusting mechanism is equipped with driving mechanism outside box, adjusting mechanism includes fixed disc, vertically rotates and connects on the inside wall of box;In the utility model, the working radius of the broken roll can be changed by adjusting mechanism, and the spacing of two broken rolls is changed indirectly, the multistage regulation of the crushing demand of different materials is satisfied, and when the working radius increases, the gap of the fixed plate located outside is filled, the crushing tooth density is guaranteed, and then the material is fully crushed to reduce the escape of coarse particles, avoid local tooth long-term overload, prolong the service life of crushing tooth, reduce the demand of repeated crushing or increase the number of stages.

Description

Technical Field

[0001] This utility model relates to the field of crushing equipment technology, specifically a multi-stage adjustable high-efficiency crushing device. Background Technology

[0002] A crushing device is an industrial equipment that uses mechanical force (such as impact, shearing, extrusion, grinding, etc.) to break large materials into small particles or powders. It is widely used in mining, building materials, chemical, pharmaceutical, food and other fields. Its core function is to apply force to the material through crushing units (such as crushing rollers, hammers, grinding discs, etc.) to reduce its particle size to meet the requirements of subsequent processing or use.

[0003] The production of calcium powder (such as heavy calcium carbonate) usually uses limestone, calcite and other ores as raw materials. The powder needs to be crushed to a certain degree by a crusher and then ground into fine powder of 200-2500 mesh by a grinding mill. During the crushing stage, the crushing device needs to adjust the crushing degree to control the output particle size, so as to provide uniform raw materials for subsequent grinding and avoid the increase in energy consumption of the grinding mill or the reduction in fine powder yield due to excessively large particles.

[0004] Some existing crushers change the degree of crushing by adjusting the distance between the crushing rollers, such as by adjusting the distance between the two rollers hydraulically or mechanically to control the output particle size. However, the distance adjustment only changes the physical distance between the two rollers, but the arrangement density and range of action of the crushing teeth remain unchanged. If the distance is too small, the crushing tooth density is insufficient, resulting in insufficient crushing force. This may cause some material to pass through without being fully crushed, resulting in coarse particles being mixed into fine materials, affecting the subsequent grinding efficiency, and may even cause jamming and damage to the equipment.

[0005] In view of the above, this application is hereby submitted. Utility Model Content

[0006] The purpose of this invention is to provide a multi-stage adjustable high-efficiency pulverizing device to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides a multi-stage adjustable high-efficiency pulverizing device, including a hollow box. An adjustment mechanism is provided at the top of the box, and a driving mechanism is provided on the outside of the box corresponding to the position of the adjustment mechanism. The adjustment mechanism includes: A fixed plate is vertically rotatably connected to the inner wall of the box. Multiple limiting frames are fixed on its outer arc wall, which are arranged in a ring array about its axis and extend along its radial direction. A slider slides in the limiting frame. A horizontal fixing rod is fixed to the end of the slider away from the fixed plate. The same fixed plate is slidably connected to the side of the fixing rod away from the fixed plate, and the two fixed plates are coaxial. A lead screw is coaxially rotated and abuts the end of the fixing rod away from the inner wall of the box. A threaded sleeve is threaded onto the outside of a lead screw. A rotating rod is rotatably connected to the outer arc wall of the threaded sleeve at a position corresponding to the fixed rod. The end of the rotating rod away from the threaded sleeve is rotatably connected to the inner side wall of the fixed rod at the corresponding position. The side wall of the fixed plate away from the lead screw is connected to the drive mechanism.

[0008] Furthermore, the limiting frame has a hollow through-structure along the axial direction of the fixed plate, and the multiple fixed rods are divided into two groups. One group is initially positioned closer to the threaded sleeve, and the other group is initially positioned further away from the threaded sleeve. The length of the rotating rod connected to the fixed rod closer to the threaded sleeve is greater than the length of the rotating rod connected to the fixed rod further away from the threaded sleeve.

[0009] Furthermore, the top of the box has a feed inlet, and the top opening of the feed inlet has a hopper. The length direction of the fixing rod is consistent with the length direction of the box. The vertical projection length of the feed inlet is less than the vertical projection length of the fixing rod. Inside the box, below the adjustment mechanism, there is a screening component, and below the screening component, there is a conveying mechanism. Inside the box, two sets of identical adjustment mechanisms are arranged in parallel at the same horizontal height. The drive mechanism connected to the side wall of the fixed plate includes a limiting plate coaxially fixed to the side wall of the fixed plate away from the lead screw. The limiting plate is located on the outside of the box. A connecting shaft is coaxially fixed to the end of the lead screw near the limiting plate. The connecting shaft is coaxially rotatable through the limiting plate, and the end of the connecting shaft away from the lead screw passes through the box to the outside.

[0010] Furthermore, the two limiting discs are located in the same vertical plane. An annular mounting groove is provided on the outer arc wall of the limiting disc near the housing. An external gear ring is fixed in the mounting groove. Connecting gears are meshed on the sides of the two external gear rings that are close to each other. The two connecting gears mesh with each other and are rotatably mounted on the outer wall of the housing. A motor is connected to the end of the connecting shaft away from the lead screw. A spline sleeve is coaxially fixed on the outer arc wall of the connecting shaft near the motor. A rotating disc is coaxially slidably mounted on the outside of the spline sleeve. The two rotating discs are located in the same vertical plane, and the connection method between the two rotating discs is the same as the connection method between the two external gear rings.

[0011] Furthermore, a plurality of limiting posts are horizontally fixed on the outer edge of the side wall of the rotating disk near the limiting disk, arranged in a circular array about the axis of the rotating disk. The axis of the limiting posts is parallel to the axis of the connecting shaft. A plurality of arc-shaped slots are provided on the outer edge of the side wall of the limiting disk near the rotating disk. The arc-shaped slots correspond one-to-one with the plurality of limiting posts and are inserted into each other. The top of the two rotating disks are provided with the same horizontal limiting rod. The end of the limiting rod is provided with a limiting clamp on the side near the rotating disk. The limiting clamp is sleeved on the outer edge of the rotating disk. An electric push rod is horizontally connected at the center of the top of the limiting rod. The fixed end of the electric push rod is fixed to the outer wall of the box.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The working radius of the crushing roller can be changed by adjusting the mechanism, thereby indirectly changing the distance between the two crushing rollers. This allows for multi-stage adjustment based on the crushing requirements of different materials. When the working radius increases, the gap of the outer fixed plate is filled to ensure the density of the crushing teeth. This ensures that the material is fully crushed, reduces the escape of coarse particles, avoids long-term overload of local teeth, extends the service life of the crushing teeth, and reduces the need for repeated crushing or increasing the number of stages.

[0013] 2. The drive mechanism can synchronously drive two adjustment mechanisms to operate in sync, ensuring stable operation of the mechanism. It only requires one motor and one electric push rod, reducing energy consumption. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a multi-stage adjustable high-efficiency pulverizing device; Figure 2 This is a schematic diagram showing the connection relationship between the drive mechanism and the adjustment mechanism in a multi-stage adjustable high-efficiency pulverizing device. Figure 3 This is a partial structural diagram of the regulating mechanism in a multi-stage adjustable high-efficiency pulverizing device; Figure 4 This is a partial structural diagram of the drive mechanism in a multi-stage adjustable high-efficiency pulverizing device; Figure 5 This is an exploded view of a portion of the drive mechanism in a multi-stage adjustable high-efficiency pulverizing device.

[0015] In the picture: 10. Housing; 101. Hopper; 11. Motor; 12. Connecting shaft; 13. Spline sleeve; 14. Rotating disk; 15. Limiting post; 16. Limiting disc; 161. External gear ring; 162. Connecting gear; 17. Electric push rod; 18. Limit rod; 20. Fixed plate; 21. Limiting frame; 22. Fixed rod; 221. Slider; 23. Lead screw; 24. Threaded sleeve; 25. Rotating rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0017] Please see the appendix Figure 1 To be continued Figure 5 This utility model provides a multi-stage adjustable high-efficiency pulverizing device, comprising a hollow housing 10, an adjusting mechanism at the top of the housing 10, and a driving mechanism at the position of the adjusting mechanism on the outside of the housing 10. The adjusting mechanism includes: A fixed plate 20 is vertically rotatably connected to the inner wall of the housing 10. Multiple limiting frames 21 are fixed on its outer arc wall, which are arranged in a ring array about its axis and extend radially. A slider 221 slides in the limiting frame 21. A horizontal fixing rod 22 is fixed to the end of the slider 221 away from the fixed plate 20. The side of the fixing rod 22 away from the fixed plate 20 is slidably connected to the same fixed plate 20 and the two fixed plates 20 are coaxial. The end of the fixing rod 22 away from the inner wall of the housing 10 is coaxially rotatably abutted against the lead screw 23. A threaded sleeve 24 is threaded onto the outside of the lead screw 23. A rotating rod 25 is rotatably connected to the outer arc wall of the threaded sleeve 24 at a position corresponding to the fixed rod 22. The end of the rotating rod 25 away from the threaded sleeve 24 is rotatably connected to the inner side wall of the fixed rod 22 at the corresponding position. The side wall of the fixed plate 20 away from the lead screw 23 is connected to the drive mechanism. The limiting frame 21 has a hollow through structure along the axial direction of the fixed plate 20. The multiple fixed rods 22 are divided into two groups. One group is initially set closer to the threaded sleeve 24, and the other group is initially set further away from the threaded sleeve 24. The length of the rotating rod 25 connected to the fixed rod 22 set closer to the threaded sleeve 24 is greater than the length of the rotating rod 25 connected to the fixed rod 22 set further away from the threaded sleeve 24. The top of the box 10 is provided with a feed inlet, and the top opening of the feed inlet is provided with a hopper 101. The length direction of the fixing rod 22 is consistent with the length direction of the box 10. The projection length of the feed inlet in the vertical direction is less than the projection length of the fixing rod 22 in the vertical direction. Inside the box 10, below the adjustment mechanism, there is also a screening component, and below the screening component, there is also a conveying mechanism.

[0018] It should be noted that: the motor 11 drives the lead screw 23 to rotate, the threaded sleeve 24 moves axially, and pushes multiple fixed rods 22 to expand outward or contract inward through the rotating rod 25. The outer arc wall of the fixed rod 22 is fixed with crushing teeth, which changes the effective radius of the crushing roller, thereby indirectly changing the distance between the two crushing rollers. Here, multiple fixed rods 22 are divided into two groups at intervals along the circumference of the fixed plate 20. One group is set close to the threaded sleeve 24, and the other group is set away from the threaded sleeve 24. The screening component mentioned in the text is used to screen qualified fragments and unqualified fragments. The conveying mechanism is used to convey the two to the next process respectively. This will not be elaborated on here. The length of the rotating rod 25 connected to the fixed rod 22 near the threaded sleeve 24 is greater than the length of the rotating rod 25 connected to the fixed rod 22 away from the threaded sleeve 24, and the angle between the rotating rod 25 connected to the fixed rod 22 near the threaded sleeve 24 and the threaded sleeve 24 is greater than the angle between the rotating rod 25 connected to the fixed rod 22 away from the threaded sleeve 24 and the threaded sleeve 24, then when the screw 23 rotates, it drives the threaded sleeve 24 to move along its axial direction, thereby forcing the rotating rod 25 to move to drive the fixed rods 22 at different positions to perform synchronous centrifugal motion or synchronous centripetal motion along the corresponding limit frame 21; Subsequently, the rotating rod 25 on the fixed rod 22, which is far away from the threaded sleeve 24, will first become perpendicular to the outer arc wall of the threaded sleeve 24. At this time, the fixed rod 22 reaches its maximum extension. When the movement continues, the fixed rod 22 begins to enter the centripetal motion process. The rotating rod 25 on the fixed rod 22, which is close to the threaded sleeve 24, is still perpendicular to the outer arc wall of the threaded sleeve 24, that is, it has not yet entered the reverse motion stage. Then, when the two sets of fixed rods 22 come into contact with each other, they can no longer be adjusted and achieve stability. That is, the working radius expands at this time.

[0019] Please see the appendix Figure 1 To be continued Figure 5 The present invention provides a technical solution: two sets of identical adjustment mechanisms are arranged parallel to each other at the same horizontal height inside the housing 10. The drive mechanism connected to the side wall of the fixed plate 20 includes a limiting plate 16 coaxially fixed to the side wall of the fixed plate 20 away from the lead screw 23. The limiting plate 16 is located on the outside of the housing 10. A connecting shaft 12 is coaxially fixed to one end of the lead screw 23 near the limiting plate 16. The connecting shaft 12 is coaxially rotatably inserted through the limiting plate 16 and the end of the connecting shaft 12 away from the lead screw 23 is inserted through the housing 10 to the outside. The two limiting discs 16 are located in the same vertical plane. An annular mounting groove is provided on the outer arc wall of the limiting disc 16 near the box body 10. An external toothed ring 161 is fixed in the mounting groove. A connecting gear 162 is meshed on the side of the two external toothed rings 161 that are close to each other. The two connecting gears 162 mesh with each other and are rotatably mounted on the outer wall of the box body 10. The end of the connecting shaft 12 away from the lead screw 23 is connected to a motor 11. A spline sleeve 13 is coaxially fixed on the outer arc wall of the connecting shaft 12 near the motor 11. A rotating disk 14 is coaxially slidably sleeved on the outside of the spline sleeve 13. The two rotating disks 14 are located in the same vertical plane and the connection method between the two rotating disks 14 is the same as the connection method between the two external toothed rings 161. The outer edge of the side wall of the rotating disk 14 near the limiting disk 16 is horizontally fixed with a plurality of limiting posts 15 arranged in a ring array about the axis of the rotating disk 14. The axis of the limiting posts 15 is parallel to the axis of the connecting shaft 12. The outer edge of the side wall of the limiting disk 16 near the rotating disk 14 is provided with a plurality of arc-shaped slots. The plurality of arc-shaped slots correspond one-to-one with the plurality of limiting posts 15 and are inserted into each other. The two rotating disks 14 are provided with the same horizontal limiting rod 18 at their tops. The end of the limiting rod 18 is provided with a limiting clamp on the side near the rotating disk 14. The limiting clamp is sleeved on the outer edge of the rotating disk 14. An electric push rod 17 is horizontally connected at the center of the top of the limiting rod 18. The fixed end of the electric push rod 17 is fixed to the outer wall of the box 10.

[0020] It should be noted that: the inner walls of the limit clamps that are close to each other are all fitted with balls, and the rotating disk 14 rolls and abuts against the balls. The balls are used to reduce the friction between the rotating disk 14 and the inner wall of the limit clamp when the limit clamp drives the rotating disk 14 to move axially along the spline sleeve 13. With the cooperation of the rotating disk 14 and the spline sleeve 13, the rotating disk 14 can not only slide freely along the axial direction of the spline sleeve 13, but the motor 11 can also transmit torque to the rotating disk 14 through the spline sleeve 13. When the limiting post 15 is not inserted into the arc-shaped slot on the limiting disk 16, the motor 11 directly drives the lead screw 23 to rotate through the connecting shaft 12, driving multiple fixed rods 22 to perform synchronous centrifugal or synchronous centripetal motion along the radial direction of the limiting disk 16. When the electric push rod 17 pushes the limit rod 18 and drives the limit clamp to drive the rotating disk 14 to move along the axis of the lead screw 23, the rotating disk 14 drives the limit post 15 to move toward the limit disk 16. The arc-shaped slot on the side wall of the limit disk 16 near the rotating disk 14 is far from the inner wall of the rotating disk 14. The depth of the arc-shaped slot decreases gradually and smoothly along the working rotation direction, which makes it easier for the limit post 15 to be inserted into the arc-shaped slot in the rotating state. When the limiting post 15 is inserted into the arc-shaped slot, the limiting plate 16 and the rotating plate 14 are linked through the limiting post 15. At this time, the limiting plate 16 will receive the torque transmitted from the rotating plate 14. Thus, the limiting plate 16 will rotate synchronously with the rotating plate 14. Since the limiting plate 16 drives the fixed plate 20 and the limiting frame 21 on it to rotate, it will drive the fixed rod 22 to revolve. Therefore, the lead screw 23 will no longer drive the threaded sleeve 24 to move, and the adjustment mechanism will not operate during the rotation. Specifically, the two rotating disks 14 are gear structures, with spline grooves adapted to the spline sleeve 13 extending through their axial sidewalls. The same drive gears are also engaged on the side of the two rotating disks 14 that are close to each other. The two drive gears are coaxial with the two connecting gears 162 respectively. The same telescopic rod is coaxially connected to the sidewall of the drive gear and the corresponding connecting gear 162 that are close to each other. The limiting rod 18 is also provided with a limiting clamp at the position corresponding to the drive gear, thereby driving the two rotating disks 14 and the two drive gears to move synchronously and maintain engagement.

[0021] Working principle: Motor 11 drives connecting shaft 12. When the limiting post 15 is not inserted into the arc-shaped slot of the limiting plate 16, motor 11 causes lead screw 23 to rotate through connecting shaft 12. Threaded sleeve 24 moves axially and pushes fixed rod 22 along limiting frame 21 to make synchronous centrifugal or centripetal movements via rotating rod 25, changing the effective radius of crushing roller and thus changing the distance between the two crushing rollers. When the electric push rod 17 pushes the limit rod 18, it drives the limit clamp to make the rotating disk 14 move along the spline sleeve 13 axially. The limit post 15 is inserted into the arc-shaped slot. The limit disk 16 is linked with the rotating disk 14. The limit disk 16 drives the fixed disk 20 and the limit frame 21 to rotate, causing the fixed rod 22 to revolve. At this time, the lead screw 23 no longer drives the threaded sleeve 24 to move, and the adjustment mechanism stops operating. At the same time, the two limit disks 16 are linked through the external gear ring 161 and the connecting gear 162. The two rotating disks 14 also maintain synchronous movement and meshing through a similar structure and drive gear.

Claims

1. A multi-stage adjustable high-efficiency pulverizing device, comprising a hollow housing (10), characterized in that: An adjustment mechanism is provided at the top of the interior of the housing (10), and a driving mechanism is provided on the outside of the housing (10) at the position corresponding to the adjustment mechanism. The adjustment mechanism includes: A fixed plate (20) is vertically rotatably connected to the inner wall of the box (10). Multiple limiting frames (21) are fixed on its outer arc wall in a circular array about its axis and extending radially. A slider (221) slides in the limiting frame (21). A horizontal fixing rod (22) is fixed at the end of the slider (221) away from the fixed plate (20). The same fixed plate (20) is slidably connected to the side of the fixing rod (22) away from the fixed plate (20), and the two fixed plates (20) are coaxial. A lead screw (23) is coaxially rotated and abuts the end of the fixing rod (22) away from the inner wall of the box (10). A threaded sleeve (24) is threaded onto the outside of the lead screw (23). A rotating rod (25) is rotatably connected to the outer arc wall of the threaded sleeve (24) at the position corresponding to the fixed rod (22). The end of the rotating rod (25) away from the threaded sleeve (24) is rotatably connected to the inner side wall of the fixed rod (22) at the corresponding position. The side wall of the fixed plate (20) away from the lead screw (23) is connected to the drive mechanism.

2. The multi-stage adjustable high-efficiency pulverizing device as described in claim 1, characterized in that: The limiting frame (21) is a hollow through structure along the axial direction of the fixed plate (20). The multiple fixed rods (22) are divided into two groups. One group is initially set closer to the threaded sleeve (24), and the other group is initially set further away from the threaded sleeve (24). The length of the rotating rod (25) connected to the fixed rod (22) set closer to the threaded sleeve (24) is greater than the length of the rotating rod (25) connected to the fixed rod (22) set further away from the threaded sleeve (24).

3. The multi-stage adjustable high-efficiency pulverizing device as described in claim 1, characterized in that: The top of the box (10) is provided with a feed inlet, and the top opening of the feed inlet is provided with a hopper (101). The length direction of the fixing rod (22) is consistent with the length direction of the box (10). The projection length of the feed inlet in the vertical direction is less than the projection length of the fixing rod (22) in the vertical direction. Inside the box (10), below the adjustment mechanism, there is also a screening component, and below the screening component, there is also a conveying mechanism.

4. The multi-stage adjustable high-efficiency pulverizing device as described in claim 1, characterized in that: The housing (10) has two sets of identical adjustment mechanisms arranged in parallel at the same horizontal level. The drive mechanism connected to the side wall of the fixed plate (20) includes a limiting plate (16) coaxially fixed to the side wall of the fixed plate (20) away from the lead screw (23). The limiting plate (16) is located on the outside of the housing (10). A connecting shaft (12) is coaxially fixed to one end of the lead screw (23) near the limiting plate (16). The connecting shaft (12) is coaxially rotated through the limiting plate (16) and the end of the connecting shaft (12) away from the lead screw (23) passes through the housing (10) to the outside.

5. The multi-stage adjustable high-efficiency pulverizing device as described in claim 4, characterized in that: The two limiting discs (16) are located in the same vertical plane. An annular mounting groove is provided on the outer arc wall of the limiting disc (16) near the box body (10). An external gear ring (161) is fixed in the mounting groove. A connecting gear (162) is meshed on the side of the two external gear rings (161) that are close to each other. The two connecting gears (162) mesh with each other and are rotatably mounted on the outer wall of the box body (10).

6. The multi-stage adjustable high-efficiency pulverizing device as described in claim 5, characterized in that: The end of the connecting shaft (12) away from the lead screw (23) is connected to a motor (11). A spline sleeve (13) is coaxially fixed on the outer arc wall of the connecting shaft (12) near the motor (11). A rotating disk (14) is coaxially slidably sleeved on the outside of the spline sleeve (13). The two rotating disks (14) are located in the same vertical plane and the connection method between the two rotating disks (14) is the same as the connection method between the two external toothed rings (161).

7. The multi-stage adjustable high-efficiency pulverizing device as described in claim 6, characterized in that: The rotating disk (14) has multiple limiting posts (15) arranged in a ring array along the axial direction of the rotating disk (14) on the outer edge of one side wall near the limiting disk (16). The axial direction of the limiting posts (15) is parallel to the axial direction of the connecting shaft (12). The limiting disk (16) has multiple arc-shaped slots on the outer edge of one side wall near the rotating disk (14). The multiple arc-shaped slots correspond one-to-one with the multiple limiting posts (15) and are inserted into each other.

8. The multi-stage adjustable high-efficiency pulverizing device as described in claim 6, characterized in that: The two rotating disks (14) are provided with the same horizontal limiting rod (18) at the top. The end of the limiting rod (18) is provided with a limiting clamp on the side close to the rotating disk (14). The limiting clamp is sleeved on the outer edge of the rotating disk (14). An electric push rod (17) is horizontally connected at the center of the top of the limiting rod (18). The fixed end of the electric push rod (17) is fixed on the outer wall of the box (10).

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