Mica sheet double-roller machine

Abstract

The utility model discloses a mica sheet double-roller machine, which relates to the technical field of mica crushing, and comprises a shell, the upper end and the lower end of the shell are respectively provided with a feed hopper and a feed opening, two crushing rollers which are symmetrically arranged and are provided with staggered tooth blocks are rotatably connected in the shell, and a driving motor is fixed on the outer side of the shell. According to the utility model, the movable stop blocks are arranged between the two adjacent fixed stop blocks, and the upper end between the two fixed stop blocks forms the closed structure through the sealing piece, so that a smaller mica sheet can be prevented from entering the space between the two fixed stop blocks, and further the smaller mica sheet can be prevented from being clamped between the crushing teeth of the crushing roller and the fixed stop blocks; according to the mica sheet crushing device, the rotation of the crushing roller is hindered, meanwhile, large abrasion caused by the fact that mica sheets exist between the crushing teeth of the crushing roller and the fixed check blocks can be avoided, the possibility that the crushing roller is stuck is avoided while the large mica sheets are well prevented from directly falling down, and normal operation of equipment is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to mica crushing technical field, especially in a kind of mica sheet roll mill. BACKGROUND

[0002] Roller mill is to adopt double roller parallel arrangement, the equipment of mica block is crushed into mica sheet, the flexible rotary crusher of prior art mica stone produces mica sheet, without pre-pulverization before crushing mica stone, so that the crushing effect of mica stone is not ideal.

[0003] To solve the above problems, the patent file with the announcement number "CN220111271U" discloses a kind of flexible rotary crusher, including crushing box and fixed installation in the top of crushing box feeding box, the inside of crushing box is installed with crushing device, pre-pulverization device is installed in the inside of feeding box, pre-pulverization device includes pre-pulverization box, transmission unit and pulverization unit, transmission unit includes motor, pulley one, transmission belt and pulley two, pulverization unit includes bearing one, bearing two, shaft one, shaft two, gear one, gear two, pre-pulverization tooth and cooperation tooth.

[0004] Based on the above search, in combination with prior art, it is found that the cooperation tooth in the existing mica sheet roll mill is mainly used to block the outside gap of crushing roller, to prevent large mica fragments from falling without crushing, but in actual production process, small (thin) mica fragments can also enter between two cooperation teeth, if small mica fragments further rub with the tooth block side wall of crushing roller in the gap of cooperation tooth, or enter between the tooth block of crushing roller and cooperation tooth, it will cause greater resistance to the rotation of crushing roller, even crush the crushing roller, resulting in the need for maintenance, therefore, a kind of mica sheet roll mill is needed. UTILITY MODEL CONTENTS

[0005] Therefore, the purpose of the utility model is to provide a kind of mica sheet roll mill to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] A kind of mica sheet roll mill, including the shell that upper and lower two ends are respectively provided with feed hopper and discharge port, two crushing rollers that are symmetrically arranged and tooth block are staggered are rotatably connected in the shell, driving motor is fixed on the outside of shell, transmission gear box is installed at the output end of driving motor, transmission gear box is used to drive two crushing rollers to rotate oppositely with the driving of driving motor, the inner wall of relative two sides of shell is also fixed with fixed stopper that is staggered with the crushing tooth of crushing roller;

[0008] The movable block is provided with a sealing piece at the upper end, and the sealing piece is overlapped with the upper ends of the two adjacent fixed blocks on both sides and seals the gap between the two fixed blocks.

[0009] The movable block is slidably connected with the inner side wall of the shell through a sliding structure, and is elastically connected with the shell through an elastic piece.

[0010] Preferably, the sealing piece comprises a cover plate, the lower ends of the cover plate on both sides are overlapped with the upper end edges of the two adjacent fixed blocks, one end of the cover plate is connected with the movable block, and the other end of the cover plate forms a free end.

[0011] Preferably, an inclined part is formed on the upper end surface of the movable block, the inclined part is inclined to one side of the crushing roller, the side, away from the crushing roller, of the inclined part is higher than the side, close to the crushing roller, of the inclined part, and the side, away from the crushing roller, of the inclined part is hinged with the cover plate.

[0012] Preferably, the height of the side, away from the crushing roller, of the inclined part is consistent with the height of the upper end surface of the fixed block when the movable block is at the lowest position.

[0013] Preferably, an arc-shaped top is formed on the upper end surface of the cover plate, the arc-shaped top is a circular arc surface protruding in the middle, and the arc-shaped top on both sides is inclined to the two fixed blocks on both sides.

[0014] Preferably, the sliding structure comprises a sliding groove and a sliding block, the sliding groove is opened on the inner side wall of the shell, the sliding groove forms an opening towards one side of the crushing roller, and the sliding groove is in position correspondence with the movable block.

[0015] The sliding block is fixed on the side, away from the crushing roller, of the movable block and is slidably embedded in the sliding groove.

[0016] Preferably, the horizontal height of the upper end of the sliding groove is lower than the horizontal height of the upper end of the fixed block, and the horizontal height of the lower end of the sliding groove is higher than the horizontal height of the lower end of the fixed block.

[0017] Preferably, the elastic piece comprises a return spring, the upper end of the return spring is fixed with the lower end of the sliding block, and the lower end of the return spring is fixed with the inner bottom wall of the sliding groove.

[0018] Preferably, an inclined bottom wall is formed on the surface of the movable block in contact with the crushing teeth of the crushing roller, a roller is slidably embedded on the inclined bottom wall of the movable block, a plurality of rollers are provided and evenly distributed along the inclined bottom wall of the movable block, and the rotation axes of the plurality of rollers are arranged in parallel with the axis of the crushing roller.

[0019] In summary, the technical effects and advantages of the present application are as follows:

[0020] This invention, by setting a movable stop between two adjacent fixed stops and using a sealing element to form a closed structure at the upper end between the two fixed stops, prevents small mica flakes from entering between the two fixed stops. This prevents small mica flakes from getting stuck between the crushing teeth of the crushing roller and the fixed stops, thus avoiding obstruction of the crushing roller's rotation. It also prevents significant wear caused by mica flakes existing between the crushing teeth of the crushing roller and the fixed stops. While effectively preventing large mica flakes from falling directly, it also avoids the possibility of the crushing roller jamming, ensuring the normal operation of the equipment. Furthermore, by setting a cover plate and an inclined section, the cover plate can overlap between the two fixed stops to form a stable closed structure. After the movable stop rises, the cover plate can automatically fit with the inclined section, forming a downward-sloping surface, facilitating the sliding of mica flakes on the cover plate towards the crushing roller and into its crushing range. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure in this embodiment;

[0022] Figure 2 This is a cross-sectional view of the outer shell in this embodiment;

[0023] Figure 3 This is a top view of the structure in this embodiment;

[0024] Figure 4 This is a schematic diagram of the movable stop structure in this embodiment;

[0025] Explanation of icon numbers:

[0026] 1. Outer shell; 11. Feed hopper; 12. Discharge port; 13. Slide chute; 2. Crushing roller; 3. Drive motor; 4. Transmission gearbox; 5. Fixed stop block; 6. Movable stop block; 61. Inclined part; 62. Slider; 7. Cover plate; 71. Arc-shaped top; 8. Roller; 9. Return spring. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0028] refer to Figures 1-4 The mica sheet double roller mill shown includes a housing 1 with a feed hopper 11 and a discharge port 12 respectively at the upper and lower ends. Two symmetrically arranged crushing rollers 2 with interlocking teeth are rotatably connected inside the housing 1. A drive motor 3 is fixed on the outside of the housing 1. A transmission gearbox 4 is installed at the output end of the drive motor 3. The transmission gearbox 4 is used to drive the two crushing rollers 2 to rotate relative to each other as driven by the drive motor 3. Fixed blocks 5 are also fixed on the inner walls of opposite sides of the housing 1, which are interlocked with the crushing teeth of the crushing rollers 2.

[0029] An elastic block 6 is arranged between every two adjacent fixed blocks 5, and the two sides of the elastic block 6 are slidably attached to the side walls of the two adjacent fixed blocks 5. A sealing piece is arranged on the upper end of the elastic block 6, and the two sides of the sealing piece are overlapped with the upper ends of the two fixed blocks 5 and seal the gap between the two fixed blocks 5.

[0030] The side of the elastic block 6 is slidably connected to the inner side wall of the shell 1 through a sliding structure. The sliding structure comprises a sliding groove 13 and a sliding block 62. The sliding groove 13 is arranged on the inner side wall of the shell 1, and the sliding groove 13 forms an opening towards the side of the crushing roller 2. The sliding groove 13 corresponds to the position of the elastic block 6.

[0031] The side of the sliding block 62 is fixed to the side of the elastic block 6 away from the crushing roller 2, and the sliding block 62 is slidably embedded in the sliding groove 13.

[0032] The horizontal height of the upper end of the sliding groove 13 is lower than the horizontal height of the upper end of the fixed block 5, and the horizontal height of the lower end of the sliding groove 13 is higher than the horizontal height of the lower end of the fixed block 5.

[0033] The elastic block 6 is also elastically connected to the shell 1 through an elastic piece. The elastic piece comprises a return spring 9. The upper end of the return spring 9 is fixed to the lower end of the sliding block 62, and the lower end of the return spring 9 is fixed to the inner bottom wall of the sliding groove 13.

[0034] Based on the above structure, the elastic block 6 is arranged between the two adjacent fixed blocks 5, and the upper ends of the two fixed blocks 5 are formed into a closed structure through the sealing piece. This can prevent small (thin) mica pieces from entering between the two fixed blocks 5, thereby preventing the small mica pieces from being stuck between the crushing teeth of the crushing roller 2 and the fixed blocks 5, which can hinder the rotation of the crushing roller 2. At the same time, it can also prevent the mica pieces from being present between the crushing teeth of the crushing roller 2 and the fixed blocks 5, which can cause severe wear. In addition, it can prevent the crushing roller 2 from being stuck, and ensure the normal operation of the equipment.

[0035] When the crushing teeth of the crushing roller 2 contact the lower end of the elastic block 6, the elastic block 6 slides upward. When the protruding elastic block 6 reaches the highest position, its lower end is still between the two fixed blocks 5. After the elastic block 6 is separated from the crushing teeth of the crushing roller 2, it is reset immediately under the elastic force of the return spring 9. In this way, the elastic block 6 is always blocked between the two fixed blocks 5 and maintains good contact with the crushing roller 2, thereby achieving a continuous and good sealing effect.

[0036] Furthermore, the sealing piece comprises a cover plate 7. The lower ends of the two sides of the cover plate 7 are overlapped with the upper end edges of the two adjacent fixed blocks 5, respectively. One end of the cover plate 7 is connected to the elastic block 6, and the other end of the cover plate 7 forms a free end. After the elastic block 6 is lowered, the cover plate 7 can be overlapped between the two fixed blocks 5, thereby forming a stable closed structure.

[0037] The upper end face of the movable block 6 is formed with an inclined portion 61, which is inclined to one side of the crushing roller 2, and the side of the inclined portion 61 away from the crushing roller 2 is higher than the side of the inclined portion 61 close to the crushing roller 2, and the side of the inclined portion 61 away from the crushing roller 2 is hinged to the cover plate 7;

[0038] When the movable block 6 is in the lowest position, the height of the side of the inclined portion 61 away from the crushing roller 2 is consistent with the height of the upper end face of the fixed block 5;

[0039] By arranging the inclined portion 61, the cover plate 7 can automatically fit the inclined portion 61 after the movable block 6 rises, forming a downwardly inclined slope, which facilitates the mica sheets on the cover plate 7 to slide to the side of the crushing roller 2 and enter the crushing range of the crushing roller 2.

[0040] Further, the upper end face of the cover plate 7 is formed with an arc-shaped top 71, which is a circular arc surface protruding in the middle, and the two sides of the arc-shaped top 71 are inclined to the two fixed blocks 5, so that the mica sheets are more easily detached from the upper end of the cover plate 7.

[0041] Further, the surface of the movable block 6 in contact with the crushing teeth of the crushing roller 2 is formed with an inclined bottom wall, a roller 8 is arranged to roll on the inclined bottom wall of the movable block 6, the roller 8 is arranged to have a plurality of rollers 8 evenly distributed along the inclined bottom wall of the movable block 6, and the rotation axes of the plurality of rollers 8 are arranged to be parallel to the axis of the crushing roller 2. The arrangement of the roller 8 can change the friction between the movable block 6 and the crushing teeth of the crushing roller 2 into rolling friction, reduce the wear of the crushing teeth of the crushing roller 2 and the movable block 6, prolong the service life of the movable block 6, and ensure that the movable block 6 can maintain good sealing effect during long-term use, thereby reducing the maintenance frequency of the mica sheet roller machine.

[0042] The working principle of the utility model is as follows: in the daily use process, the mica blocks are conveyed upward to the feeding hopper 11 by using the conveying belt, the driving motor 3 drives the two crushing rollers 2 to rotate relative to each other through the transmission gear box 4, so as to crush the falling mica stones, and the crushed mica stones fall and are discharged from the discharge port 12;

[0043] In the process, the fixed block 5 is matched with the crushing roller 2, which can avoid the large mica stone or mica sheet from falling directly without being crushed, the movable block 6 is arranged between two adjacent fixed blocks 5, and the upper end between the two fixed blocks 5 is closed through a sealing element, which can avoid the small mica sheet from entering between the two fixed blocks 5, thereby avoiding the small mica sheet from being clamped between the crushing teeth of the crushing roller 2 and the fixed block 5, causing the rotation of the crushing roller 2 to be hindered, and also avoiding the small mica sheet from being clamped between the crushing teeth of the crushing roller 2 and the fixed block 5, causing the crushing roller 2 to be clamped, and ensuring the normal operation of the equipment;

[0044] When the crushing teeth of the crushing roller 2 contact the lower end of the movable block 6, the movable block 6 overcomes the pulling force of the reset spring 9 and slides upward under the guidance of the sliding groove 13 and the sliding block 62, the protruding movable block 6 extends to the highest position, and the lower end of the movable block 6 is still between the two fixed blocks 5, and the movable block 6 is reset under the elastic force of the reset spring 9 immediately after being separated from the crushing teeth of the crushing roller 2, so that the movable block 6 is always blocked between the two fixed blocks 5 and maintains good contact with the crushing roller 2, thereby achieving continuous and good blocking effect.

[0045] The utility model has been described by the above related embodiments and drawings, however, the above embodiments are only examples for implementing the utility model. It must be pointed out that the disclosed embodiments do not limit the scope of the utility model. On the contrary, modifications and equivalent arrangements included in the spirit and scope of claims are included in the scope of the utility model.

Claims

1. A mica sheet double-roll mill, comprising a housing with a feed hopper and a discharge port respectively at its upper and lower ends, wherein two symmetrically arranged crushing rollers with interlocking teeth are rotatably connected inside the housing, a drive motor is fixed to the outside of the housing, and a transmission gearbox is installed at the output end of the drive motor, the transmission gearbox being used to drive the two crushing rollers to rotate relative to each other as driven by the drive motor, and fixed blocks are also fixed to the inner walls of opposite sides of the housing, which are interlocked with the crushing teeth of the crushing rollers, characterized in that: A movable stop is provided between every two adjacent fixed stops. The movable stop slides against the side walls of the two adjacent fixed stops on both sides. A sealing element is provided at the upper end of the movable stop. The sealing element overlaps with the upper ends of the two fixed stops on both sides and seals the gap between the two fixed stops. One side of the movable stop is slidably connected to the inner side wall of the outer shell through a sliding structure. The movable stop is also elastically connected to the outer shell through an elastic element.

2. The mica sheet roller mill according to claim 1, characterized in that: The sealing element includes a cover plate, the lower ends of the two sides of the cover plate overlap with the upper edges of two adjacent fixed blocks respectively, one end of the cover plate is connected to a movable block, and the other end of the cover plate forms a free end.

3. A mica sheet roller mill according to claim 2, characterized in that: The upper surface of the movable stop is formed with an inclined portion, which is inclined toward one side of the crushing roller. The side of the inclined portion away from the crushing roller is higher than the side of the inclined portion close to the crushing roller. The side of the inclined portion away from the crushing roller is hinged to the cover plate. When the movable stop is in its lowest position, the height of the inclined part away from the crushing roller is the same as the height of the upper surface of the fixed stop.

4. A mica sheet roller mill according to claim 3, characterized in that: The upper surface of the cover plate has an arc-shaped top, which is a circular arc-shaped surface that protrudes in the middle, and the two sides of the arc-shaped top are inclined towards the fixed blocks on both sides.

5. A mica sheet roller mill according to claim 1, characterized in that: The sliding structure includes a groove and a slider. The groove is formed on the inner wall of the outer shell, and the groove has an opening facing the crushing roller. The groove corresponds to the position of the movable stop. One side of the slider is fixed to the side of the movable stop away from the crushing roller, and the slider is slidably embedded in the groove.

6. A mica sheet roller mill according to claim 5, characterized in that: The upper end of the slide is at a lower horizontal height than the upper end of the fixed block, and the lower end of the slide is at a higher horizontal height than the lower end of the fixed block.

7. A mica sheet roller mill according to claim 6, characterized in that: The elastic element includes a return spring, the upper end of which is fixed to the lower end of the slider, and the lower end of which is fixed to the bottom wall of the groove.

8. A mica sheet roller mill according to claim 1, characterized in that: The surface of the movable stop that contacts the crushing teeth of the crushing roller forms an inclined bottom wall. Rollers are rolled and embedded on the inclined bottom wall of the movable stop. Multiple rollers are provided and evenly distributed along the inclined bottom wall of the movable stop. The rotation axes of the multiple rollers are all arranged parallel to the axis of the crushing roller.

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