Gypsum raw material crushing device and gypsum raw material crushing method

Abstract

The invention discloses a gypsum raw material crushing device and a gypsum raw material crushing method, and relates to the field of crushing, the gypsum raw material crushing device comprises a box body, and a plurality of first crushing rollers capable of rolling in the box body are mounted in the box body; the two ends of the box body are of opening structures, a first rotating plate and a second rotating plate are rotationally mounted at the openings in the two ends of the box body correspondingly, and the two ends of the first crushing roller are rotationally connected with the first rotating plate and the second rotating plate correspondingly; a power device is further fixedly installed on the box body and used for driving the first smashing roller to roll in the box body. By arranging the box body and the first crushing roller rolling in the box body, when the first crushing roller rotates along with the first rotating plate, extrusion force can be formed between the first crushing roller and the box body, and the purpose of extruding and crushing materials is achieved; and when the first crushing roller moves around the axis of the box body in the box body, the first crushing roller can also drive part of the materials to move along with the first crushing roller in the box body so as to dynamically crush the materials.

Description

Technical Field

[0001] The invention relates to the field of crushing, and in particular to a gypsum raw material crushing device and a gypsum raw material crushing method. Background Art

[0002] The main component of gypsum is calcium sulfate (CaSO4), which is divided into edible gypsum and building gypsum. Edible gypsum usually exists in a semi-hydrated form, that is, calcium sulfate hemihydrate. Gypsum is made from raw gypsum or anhydrite through crushing, homogenization, calcination and grinding.

[0003] Raw gypsum is an orthorhombic system, with plate-like crystals, usually in dense blocks or fibers, white or gray, red, brown, glassy or silky luster, and relatively soft (Mohs hardness is 2); anhydrite is a monoorthorhombic system, with plate-like crystals, usually in dense blocks or granules, white or gray, glassy luster, and relatively high hardness (Mohs hardness is 3 to 3.5). When crushing gypsum raw materials, jaw crushers, cone crushers, roller crushers and other crushing devices are often used.

[0004] The working principle of the roller crusher is as follows: the roller crusher (crusher) uses rotating crushing rollers, and the raw materials pass through the two crushing rollers to achieve the purpose of crushing the raw materials. However, when crushing the raw materials, the crushing rollers only rotate on the box body and do not roll inside the box body. Once the materials fall to the bottom of the box body, the crushing rollers cannot contact the materials, and the crushing efficiency of the materials is relatively low. Moreover, the crushing rollers of the roller crusher are directly driven by the motor. When rotating inside the box body, the extrusion force between the two crushing rollers is mainly used to crush the materials. Since the gypsum raw materials contain relatively hard impurities such as quartz, feldspar, mica and pyrite, during the crushing work, the reaction force of the impurities causes the crushing rollers to bend or change from cylindrical to elliptical column structure, which reduces the crushing effect of the gypsum raw materials. Summary of the invention

[0005] The object of the present invention is to provide a gypsum raw material crushing device and a gypsum raw material crushing method to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a gypsum raw material crushing device, comprising: A box body, wherein a plurality of first crushing rollers capable of rolling inside the box body are installed inside the box body; The two ends of the box body are open structures, and the first rotating plate and the second rotating plate are rotatably installed at the two openings of the box body respectively, and the two ends of the first crushing roller are rotatably connected to the first rotating plate and the second rotating plate respectively; The box body is also fixedly mounted with a power device for rolling the first crushing roller inside the box body. When the first crushing roller rolls inside the box body, it can drive the material to roll inside the box body, so as to dynamically crush the material.

[0007] Preferably, the power device comprises a motor, and the motor is fixed on the box; A rotating disk is fixedly mounted on the output end of the motor, and the rotating disk is fixedly connected to the first rotating plate; The first rotating plate and the second rotating plate are both provided with three slide grooves pointing to the center of the circle, and a slider is slidably installed inside the slide groove, and both ends of the first crushing roller are rotatably connected to the slider; A driving disk is rotatably mounted between the rotating disk and the first rotating plate, a side of the driving disk in contact with the slider is provided with a plane thread, and a side of the slider in contact with the driving disk is provided with teeth meshing with the plane thread; The rotating disk is rotatably mounted with a plurality of radially arranged and evenly distributed bevel gears, the driving disk is provided with bevel teeth meshing with the bevel gears, and the rotating disk is provided with rotating holes for rotating the bevel gears; The bevel gear is rotated, and the bevel gear drives the driving plate to rotate, so as to drive the first crushing roller to move along the radial direction of the box body, so as to adjust the distance between the first crushing roller and the side wall of the box body.

[0008] Preferably, an inner box is rotatably mounted inside the box, and a first rotating plate and a second rotating plate are rotatably mounted at both ends of the inner box respectively; A first crushing roller is installed inside the inner box, and two ends of the first crushing roller are rotatably connected to the first rotating plate and the second rotating plate respectively, so that the first crushing roller can roll inside the inner box; The power device includes a motor, a gear ring, a sun gear and a planetary gear. The sun gear is fixedly connected to the side wall of the box through a support shaft. The gear ring is fixedly connected to one end of the inner box. The rotating shaft of the first crushing roller is fixedly connected to the planetary gear. The motor is fixedly installed inside the box, and the motor is used to drive the gear ring to rotate. When the gear ring rotates, it can drive the inner box to rotate. At the same time, the gear ring drives the planetary gear to roll around the sun gear. When the planetary gear drives the first crushing roller to rotate, it also rolls in the inner box.

[0009] Preferably, the first crushing roller passes through the second rotating plate and extends out of the inner box body, and a filter tube is fixedly installed on one end of the first crushing roller located outside the inner box body; A second crushing roller is installed inside the first crushing roller. When the first crushing roller rotates following the gear ring, the outer circumferential surface of the second crushing roller can roll along the inner wall of the first crushing roller under the push of the first crushing roller. A third rotating plate is fixedly mounted on one end of the box body away from the gear ring, and one end of the second crushing roller located outside the first crushing roller is rotatably connected to the third rotating plate.

[0010] Preferably, a support ring is fixedly mounted on the inner side wall of one end of the first pulverizing roller, and the second pulverizing roller is rotatably mounted in the support ring.

[0011] Preferably, a support roller is also installed inside the inner box, and one end of the support roller is fixedly connected to the support shaft of the sun gear; The bottom side of the support roller is arranged as an open structure, and the other end of the support roller is fixedly connected with a feed hopper, which extends to the outside of the box body.

[0012] Preferably, the first crushing roller is provided with symmetrically arranged arc-shaped plates; The first crushing roller is provided with a mounting opening for mounting the arc plate, one side of the arc plate is rotatably connected to the mounting opening, and the arc plate can rotate toward the inside of the first crushing roller; A limiting ring is fixedly installed at the edge of the installation opening, and a groove matching the limiting ring is provided on the arc plate.

[0013] Preferably, the filter tube is located between the second rotating plate and the third rotating plate, a discharge port is provided at the bottom of the box body, and the discharge port is located on the box body between the second rotating plate and the third rotating plate.

[0014] Preferably, a material holding portion protruding outward is fixedly mounted on the inner box body, the material holding portion is evenly distributed on the inner box body and is communicated with the inner cavity of the inner box body, and the material holding portion is used to hold the material at the bottom of the inner cavity of the inner box body; When the inner box body rotates, the material holding part can rotate along with the inner box body and move upward with the material to tumble the material.

[0015] Preferably, a support is fixedly mounted on the bottom of the lower shell, and the shell of the motor is fixedly connected to the support.

[0016] A method for crushing gypsum raw materials, using the above-mentioned gypsum raw material crushing device, comprises the following steps: when the first crushing roller rotates with the first rotating plate, an extrusion force is formed between the first crushing roller and the box body to squeeze the material, thereby achieving the purpose of extruding and crushing the material; When the first crushing roller moves around the axis of the box body inside the box body, the first crushing roller will also drive part of the material to move inside the box body following the first crushing roller, so as to dynamically crush the material.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a box body and a first crushing roller rolling inside the box body. When the first crushing roller rotates following the first rotating plate, an extrusion force is formed between the first crushing roller and the box body to squeeze the material, thereby achieving the purpose of extruding and crushing the material; when the first crushing roller moves around the axis of the box body inside the box body, the first crushing roller will also drive part of the material to move following the first crushing roller inside the box body, so as to dynamically crush the material, realize the circulation and multi-stage crushing of the material, and have a better crushing effect and a higher qualified rate.

[0018] When the second crushing roller rolls inside the first crushing roller, due to the contact between the two crushing rollers, there is friction between the two crushing rollers. Under the action of the friction, the two crushing rollers will vibrate, and the vibration force acts on the material along the first crushing roller, which will vibrate and rub the material together, thereby improving the crushing effect of the material. The movement path of the second crushing roller is a cylindrical structure, and it is always in contact with the inner wall of the first crushing roller, which can be used to maintain the shape of the first crushing roller and avoid or reduce the deformation of the first crushing roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of Embodiment 1 of the present invention; Figure 2 is a cross-sectional view of the first embodiment of the present invention; Figure 3 It is a side sectional view of the first embodiment of the present invention; Figure 4 It is an exploded diagram of the second embodiment of the present invention; Figure 5 is a side sectional view of the second embodiment of the present invention; Figure 6 For the present invention Figure 5 Sectional view of AA in the middle; Figure 7 This is a motion state diagram of the first crushing roller and the second crushing roller in the second embodiment of the present invention; Figure 8 This is a structural diagram of the first crushing roller in the second embodiment of the present invention; Fig. 9 A cross-sectional view of an opening of the mounting port of the second embodiment of the present invention; Fig.10 This is a cross-sectional view of a closed mounting opening of the second embodiment of the present invention.

[0020] In the figure: 1. box body; 2. first crushing roller; 201. arc plate; 202. installation port; 203. filter tube; 205. limit ring; 206. groove; 3. slider; 4. drive plate; 5. motor; 6. rotating plate; 7. bevel gear; 8. slide; 9. first rotating plate; 10. second rotating plate; 11. feed hopper; 12. filter screen; 13. gear ring; 14. sun gear; 15. support roller; 16. planetary gear; 17. inner box body; 171. material holding part; 18. discharge port; 19. third rotating plate; 20. second crushing roller; 21. support ring; 22. auxiliary ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1 See also Figure 1-Figure 3 As shown, this embodiment provides a gypsum raw material crushing device, including a box body 1, the box body 1 is a cylindrical structure with openings at both ends, support legs are fixedly installed at the bottom of both ends of the box body 1, a feed hopper 11 is fixedly installed on the upper side of the box body 1, and a plurality of first crushing rollers 2 that can roll inside the box body 1 are installed inside the box body 1, such as Figure 1 As shown, three first crushing rollers 2 are provided and are evenly distributed along the circumferential direction of the box body 1 .

[0023] The first rotating plate 9 and the second rotating plate 10 are rotatably mounted at the openings at both ends of the box body 1, and the rotating shafts are fixedly mounted at both ends of the first crushing roller 2, and the rotating shafts at both ends are rotatably connected to the first rotating plate 9 and the second rotating plate 10. The box body 1 is also fixedly mounted with a power device for driving the first crushing roller 2; in this embodiment, the power device includes a motor 5, and a mounting plate is fixedly mounted on the box body 1, and the motor 5 is fixed on the mounting plate of the box body 1.

[0024] The output end of the motor 5 is fixedly mounted with a rotating disk 6, which is fixedly connected to the first rotating plate 9; the rotating disk 6 is used to rotate with the first rotating plate 9, and the first rotating plate 9 and the second rotating plate 10 are both provided with three sliding grooves 8 pointing to the center of the circle, such as Figure 1 and Figure 3 As shown, the three slide grooves 8 form a Y-shaped structure, and the angle between adjacent ones is 120 degrees.

[0025] A slider 3 is slidably installed inside the slide groove 8, and the slider 3 can slide along the slide groove 8. The rotating shafts at both ends of the first crushing roller 2 are rotatably connected to the slider 3 respectively; a driving disk 4 is rotatably installed between the rotating disk 6 and the first rotating plate 9, and the driving disk 4 is coaxially arranged with the rotating disk 6. A plane thread is provided on the side of the driving disk 4 that contacts the slider 3, and a tooth meshing with the plane thread is provided on the side of the slider 3 that contacts the driving disk 4; a plurality of radially arranged and evenly distributed bevel gears 7 are rotatably installed on the rotating disk 6, and at least 3 bevel gears 7 are provided, and are evenly distributed along the circumferential direction of the rotating disk 6; the driving disk 4 is provided with bevel teeth meshing with the bevel gears 7. In this embodiment, the bevel gear 7 plays a role of limiting the driving disk 4 to ensure that the driving disk 4 does not deviate when rotating in the rotating disk 6.

[0026] The rotating disk 6 is provided with at least one rotating hole for rotating the bevel gear 7, and the rotating hole is an inner hexagonal structure. A hexagonal wrench is inserted into the rotating hole to rotate the bevel gear 7, and the bevel gear 7 can rotate with the driving disk 4. When the driving disk 4 rotates, it can slide along the slide groove 8 with the slider 3 under the action of the plane thread, thereby moving the first crushing roller 2 along the radial direction of the box body 1, and is used to adjust the distance between the first crushing roller 2 and the side wall of the box body 1. It can be used to achieve the purpose of crushing different particles.

[0027] In this embodiment, when the first crushing roller 2 rotates following the first rotating plate 9, the first crushing roller 2 will not rotate on its own, and an extrusion force will be formed between the first crushing roller 2 and the box body 1 to squeeze the material to achieve the purpose of extruding and crushing the material. Moreover, since the first crushing roller 2 will not rotate on its own, when the first crushing roller 2 moves around the axis of the box body 1 inside the box body 1, the first crushing roller 2 will also drive part of the material to move inside the box body 1 following the first crushing roller 2, such as Figure 3 As shown, it is used for dynamic crushing of materials.

[0028] The lower part of the box body 1 is detachably mounted with an arc-shaped filter screen 12 by bolts. The filter screen 12 has the same diameter as the box body 1, forming a complete cylindrical structure. The diameter of the crushed material is smaller than the diameter of the mesh of the filter screen 12, and the material can fall from the filter screen 12 to achieve the discharge of the crushed material, while the particles with a diameter larger than the mesh diameter of the filter screen 12 will continue to be crushed in the filter screen 12.

[0029] Embodiment 2 See also Figure 4-10 , which is different from the first embodiment in that: An inner box body 17 is rotatably installed inside the box body 1, and a first rotating plate 9 and a second rotating plate 10 are rotatably installed at both ends of the inner box body 17 respectively. A first crushing roller 2 is installed inside the inner box body 17, and one end of the first crushing roller 2 is an open structure. Both ends of the first crushing roller 2 are fixedly installed with a rotating shaft, the rotating shaft at one end of the first crushing roller 2 is rotatably connected to the first rotating plate 9, and the other end of the first crushing roller 2 is rotatably connected to the second rotating plate 10, so that the first crushing roller 2 can roll inside the inner box body 17.

[0030] In this embodiment, Figure 6 As shown, the diameter of the second rotating plate 10 is greater than the diameter of the first rotating plate 9 , that is, the circumferential surface of the second rotating plate 10 just fits together with the inner wall of the box body 1 .

[0031] A power device is also installed inside the box body 1, and the power device includes a motor 5, a gear ring 13, a sun gear 14 and a planetary gear 16. The planetary gear 16 is located between the sun gear 14 and the gear ring 13, and meshes with the sun gear 14 and the gear ring 13. A support shaft is fixedly installed at one end of the sun gear 14, and the other end of the support shaft is fixedly connected to the side wall of the box body 1; the outer side of the gear ring 13 is fixedly connected to one end of the inner box body 17, and the rotating shaft of the first crushing roller 2 is fixedly connected to the rotating shaft of the planetary gear 16. The motor 5 is fixedly installed inside the box body 1, and a driving gear is fixedly installed at the output end of the motor 5. An external gear (not shown in the figure) is provided on the outer side of the gear ring 13, and the motor 5 is used to rotate the gear ring 13.

[0032] When the gear ring 13 rotates, it can rotate the inner box 17, and at the same time, the gear ring 13 rolls the planetary gear 16 around the sun gear 14, and the planetary gear 16 rolls in the inner box 17 while rotating the first crushing roller 2. In this embodiment, since the gear ring 13 has the largest diameter and the planetary gear 16 has the smallest diameter, when the gear ring 13 rotates, the rotation speed of the planetary gear 16 is greater than the rotation speed of the gear ring 13, that is, when the inner box 17 rotates, the first crushing roller 2 rotates around the axis of the inner box 17 inside the inner box 17, and the first crushing roller 2 also rotates.

[0033] In this embodiment, the first crushing roller 2 passes through the second rotating plate 10 and extends out from the inner box 17. A filter tube 203 is installed at one end of the first crushing roller 2 located outside the inner box 17 through bolts. The filter tube 203 can be removed from the first crushing roller 2 and replaced.

[0034] like Figure 4 , Figure 5 and Figure 7As shown, the second crushing roller 20 is installed inside the first crushing roller 2. When the first crushing roller 2 rotates following the gear ring 13, the outer circumferential surface of the second crushing roller 20 can roll along the inner wall of the first crushing roller 2 under the push of the first crushing roller 2; Figure 7 As shown, when the first pulverizing roller 2 moves to the upper left of the inner box 17, the angle between the line between the axis of the first pulverizing roller 2 and the axis of the inner box 17 and the vertical plane is 60 degrees, and the second pulverizing roller 20 moves to the top of the inner box 17; when the first pulverizing roller 2 moves to the lower right side of the inner box 17, the angle between the line between its axis and the axis of the inner box 17 and the horizontal plane is 30 degrees, and the second pulverizing roller 20 moves to the bottom of the inner box 17; The end of the box body 1 away from the gear ring 13 is fixedly mounted with a third rotating plate 19, and the end of the second crushing roller 20 located outside the first crushing roller 2 is rotatably connected to the third rotating plate 19, and the first crushing roller 2 is in contact with the third rotating plate 19, but there is no connection relationship. Figure 4 and Figure 6 As shown, a support ring 21 is fixedly installed on the inner side wall of one end of the first crushing roller 2, and the second crushing roller 20 is rotatably installed in the support ring 21. When the first crushing roller 2 rolls with the second crushing roller 20 inside it, the rotating shaft at one end of the second crushing roller 20 rolls in the support ring 21. At the same time, the second crushing roller 20 will also rotate around the axis of the inner box 17 along with the first crushing roller 2, that is, the third rotating plate 19 will rotate along with the second crushing roller 20.

[0035] When the outer circumferential surface of the second pulverizing roller 20 rolls along the inner side wall of the first pulverizing roller 2, the outer circumferential surface of the second pulverizing roller 20 and the inner side wall of the first pulverizing roller 2 are squeezed, thereby generating a squeezing force. Figure 7 As shown, when the first crushing roller 2 moves to the lower part of the inner box body 17, the second crushing roller 20 is in the lower position of the first crushing roller 2, which supports the first crushing roller 2. At the same time, since the trajectory of the second crushing roller 20 relative to the first crushing roller 2 is a circular trajectory, it can also be used to keep the shape of the second crushing roller 2 cylindrical. If in the process of crushing materials, the first crushing roller 2 is deformed due to excessive hardness of the material (for example, from a cylinder to an elliptical cylinder), or partially concave, when the inner wall of the first crushing roller 2 contacts the second crushing roller 20, the outward force of the second crushing roller 20 can cause the side wall of the first crushing roller 20 to be squeezed and restored to a cylindrical structure.

[0036] In addition, when the second crushing roller 20 rolls along the inner wall of the first crushing roller 2, vibration will occur between the two crushing rollers. When the vibration force acts on the first crushing roller 2, the first crushing roller 2 will vibrate with the materials, the materials will rub against each other, and the materials and the first crushing roller 2 will also rub against each other and vibrate, which can improve the crushing effect of the first crushing roller 2.

[0037] A support roller 15 is also installed inside the inner box body 17, and one end of the support roller 15 is fixedly connected to the support shaft of the sun gear 14; the bottom side and the other end of the support roller 15 are both arranged as an opening structure, and the other end of the support roller 15 is fixedly connected to a feed hopper 11, and the opening structure is communicated with the feed hopper 11, and the feed hopper 11 extends to the outside of the box body 1, and the feed hopper 11 is fixedly connected to one end of the box body 1.

[0038] like Figure 4 and Figure 6 As shown, the second rotating plate 10 is rotatably connected to the outer side of the open end of the support roller 15, and the bottom of the feed hopper 11 is arranged as an inclined structure. Since the second crushing roller 20 will rotate with the third rotating plate 19 when it rotates, the feed hopper 11 passes through the third rotating plate 19 and is connected to the support roller 15. When the bottom of the feed hopper 11 is arranged to be inclined, the rotation of the third rotating plate 19 will be affected. Therefore, in this embodiment, an auxiliary ring 22 is rotatably installed on the third rotating plate 19, and the auxiliary ring 22 is coaxially arranged with the inner box body 17 to prevent the feed hopper 11 from affecting the rotation of the third rotating plate 19.

[0039] In this embodiment, the bottom of the support roller 15 is open, while the side and the top are closed structures. The first crushing roller 2 and the support roller 15 roll together, and the middle part of the inner box 17 is closed between the two. When the material rolls upward with the first crushing roller 2 and the inner box 17, it can directly fall on the first crushing roller 2 and the support roller 15, and will not fall directly on the inner box 17 again, so the material can be better crushed.

[0040] like Figure 4 and Figure 6 As shown, the inner box 17 is fixedly mounted with a material holding portion 171 protruding outward, the material holding portion 171 is evenly distributed on the inner box 17, and is connected to the inner cavity of the inner box 17. Since the material is a block structure or a granular structure, the materials are loose, there is no adhesion between the materials, and the materials can move with each other, and the materials will accumulate at the bottom of the inner box 17. When the inner box 17 moves to the bottom with the material holding portion 171, the material holding portion 171 is used to hold the material at the bottom of the inner cavity of the inner box 17. When the inner box 17 rotates, the material holding portion 171 can rotate with the inner box 17 and move upward with the material for tumbling of the material. Moreover, the material can be brought to a certain height, the height of the rise is greater than the height of the axis of the inner box 17, and then fall downward.

[0041] like Figure 8-10 As shown, the first crushing roller 2 is provided with a symmetrically arranged arc-shaped plate 201, and a mounting opening 202 for mounting the arc-shaped plate 201 is provided on the first crushing roller 2, and one side of the arc-shaped plate 201 is rotatably connected to the mounting opening 202, so that the arc-shaped plate 201 can rotate toward the inside of the first crushing roller 2; A limiting ring 205 is fixedly installed at the edge of the installation opening 202 , and a groove 206 matching the limiting ring 205 is formed on the arc plate 201 .

[0042] like Fig. 9 As shown, when the first crushing roller 2 moves to the bottom of the inner box 17, Fig. 9 As shown, the second pulverizing roller 20 is located at the lower position of the first pulverizing roller 2, and the arc plate 201 is located at the upper part of the first pulverizing roller 2, and under the action of the gravity of the arc plate 201, the arc plate 201 will fall downward, that is, rotate toward the axis of the second pulverizing roller 20, and the mounting port 202 is in an open state. At this time, the material dropped from the material holding portion 171 will enter the first pulverizing roller 2 from the mounting port 202; in the embodiment, the internal space of the material holding portion 171 is smaller than the internal space of the first pulverizing roller 2, preferably one half of the internal space of the first pulverizing roller 2, to avoid excessive material from entering the first pulverizing roller 2 when the material in the material holding portion 171 falls, causing the arc plate 201 to be stuck.

[0043] As the first crushing roller 2 rotates upward, Fig. 9 As shown, the second crushing roller 20 continues to move upward, and the second crushing roller 20 continues to rotate in contact with the first crushing roller 2, providing a force pointing to the outside of the circumference to the arc plate 201, so that the arc plate 201 rotates upward and fits in the installation opening 202. As the first crushing roller 2 and the second crushing roller 20 rotate, the second crushing roller 20 continues to crush the material inside the first crushing roller 2, thereby achieving secondary crushing of the material.

[0044] In this embodiment, even if the material is stuck in the installation port 202, since the second crushing roller 20 rotates in close contact with the first crushing roller 2 and provides a force pointing to the outside of the circumference to the arc plate 201, it can be seen that the arc plate 201 will rotate outward under the support force of the second crushing roller 20 and squeeze the material stuck in the installation port 202, so that the stuck material can be broken.

[0045] The filter tube 203 is located between the second rotating plate 10 and the third rotating plate 19 . A discharge port 18 is provided at the bottom of the box body 1 . The discharge port 18 is located on the box body 1 between the second rotating plate 10 and the third rotating plate 19 .

[0046] In this embodiment, the mesh of the filter tube 203 is smaller than the mesh of the filter screen 12. As the material continues to enter the interior of the first crushing roller 2, the material at the filter tube 203 continues to fall, forming an empty space, and due to the rotation of the second crushing roller 20, the second crushing roller 20 rolls inside the first crushing roller 2, squeezing the material, and the material will be distributed between the second crushing roller 20 and the first crushing roller 2. Since one end of the filter tube 203 is a cavity structure, there is no external force. Under the action of the squeezing force of the second crushing roller 20 and the first crushing roller 2, the crushed material will gradually be driven to one end of the filter tube 203, and continuously fall downward to the discharge port 18, so as to realize the recovery of the material. In this embodiment, the inner side wall of the first crushing roller 2 can also be set as a slope structure, and one end of the filter tube 203 is lower than the other end, so that the material can move to one end of the filter tube 203 better.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gypsum raw material crushing device, characterized in that: include: A box body (1), wherein a plurality of first crushing rollers (2) capable of rolling inside the box body (1) are installed inside the box body (1); The two ends of the box body (1) are open structures, and the first rotating plate (9) and the second rotating plate (10) are rotatably mounted at the two end openings of the box body (1), and the two ends of the first crushing roller (2) are rotatably connected to the first rotating plate (9) and the second rotating plate (10); The box body (1) is also fixedly mounted with a power device for driving the first crushing roller (2) to roll inside the box body (1); when the first crushing roller (2) rolls inside the box body (1), it can drive the material to roll inside the box body (1), thereby dynamically crushing the material; An inner box body (17) is rotatably mounted inside the box body (1), and a first rotating plate (9) and a second rotating plate (10) are rotatably mounted at both ends of the inner box body (17); A first crushing roller (2) is installed inside the inner box (17), and two ends of the first crushing roller (2) are rotatably connected to the first rotating plate (9) and the second rotating plate (10) respectively, so that the first crushing roller (2) can roll inside the inner box (17); The power device comprises a motor (5), a gear ring (13), a sun gear (14) and a planetary gear (16); the sun gear (14) is fixedly connected to the side wall of the housing (1) via a support shaft; the gear ring (13) is fixedly connected to one end of the inner housing (17); the rotating shaft of the first crushing roller (2) is fixedly connected to the planetary gear (16); the motor (5) is fixedly mounted inside the housing (1); and the motor (5) is used to drive the gear ring (13) to rotate; When the gear ring (13) rotates, it can drive the inner box (17) to rotate. At the same time, the gear ring (13) drives the planetary gear (16) to roll around the sun gear (14). When the planetary gear (16) drives the first crushing roller (2) to rotate, it also rolls in the inner box (17). The first crushing roller (2) passes through the second rotating plate (10) and extends out of the inner box body (17); a filter tube (203) is fixedly mounted on one end of the first crushing roller (2) located outside the inner box body (17); A second crushing roller (20) is installed inside the first crushing roller (2), and when the first crushing roller (2) rotates following the gear ring (13), the outer circumferential surface of the second crushing roller (20) can roll along the inner wall of the first crushing roller (2) under the push of the first crushing roller (2); A third rotating plate (19) is fixedly mounted on one end of the box body (1) away from the gear ring (13), and an end of the second crushing roller (20) located outside the first crushing roller (2) is rotatably connected to the third rotating plate (19).

2. A gypsum raw material crushing device according to claim 1, characterized in that: The power device comprises a motor (5), and the motor (5) is fixed on the box (1); A rotating disk (6) is fixedly mounted on the output end of the motor (5), and the rotating disk (6) is fixedly connected to the first rotating plate (9); The first rotating plate (9) and the second rotating plate (10) are both provided with three slide grooves (8) pointing to the center of the circle, a slider (3) is slidably mounted inside the slide groove (8), and both ends of the first crushing roller (2) are rotatably connected to the slider (3); A driving disk (4) is rotatably mounted between the rotating disk (6) and the first rotating plate (9); a side of the driving disk (4) in contact with the slider (3) is provided with a planar thread, and a side of the slider (3) in contact with the driving disk (4) is provided with teeth meshing with the planar thread; The rotating disk (6) is rotatably mounted with a plurality of radially arranged and evenly distributed bevel gears (7), the driving disk (4) is provided with bevel teeth meshing with the bevel gears (7), and the rotating disk (6) is provided with rotating holes for rotating the bevel gears (7); The bevel gear (7) is rotated, and the bevel gear (7) drives the driving disc (4) to rotate, so as to drive the first crushing roller (2) to move along the radial direction of the box body (1), so as to adjust the distance between the first crushing roller (2) and the side wall of the box body (1).

3. The gypsum raw material crushing device according to claim 1, characterized in that: A support ring (21) is fixedly mounted on the inner side wall of one end of the first crushing roller (2), and the second crushing roller (20) is rollingly mounted in the support ring (21).

4. A gypsum raw material crushing device according to claim 3, characterized in that: A support roller (15) is also installed inside the inner box (17), and one end of the support roller (15) is fixedly connected to the support shaft of the sun gear (14); The bottom side of the support roller (15) is arranged as an open structure, and the other end of the support roller (15) is fixedly connected to a feed hopper (11), and the feed hopper (11) extends to the outside of the box body (1).

5. A gypsum raw material crushing device according to claim 4, characterized in that: The first crushing roller (2) is provided with symmetrically arranged arc-shaped plates (201); The first crushing roller (2) is provided with a mounting opening (202) for mounting the arc-shaped plate (201); one side of the arc-shaped plate (201) is rotatably connected to the mounting opening (202), and the arc-shaped plate (201) can rotate toward the inside of the first crushing roller (2); A limit ring (205) is fixedly installed at the edge of the installation opening (202), and a groove (206) matching the limit ring (205) is provided on the arc plate (201).

6. A gypsum raw material crushing device according to claim 5, characterized in that: The filter tube (203) is located between the second rotating plate (10) and the third rotating plate (19); a discharge port (18) is provided at the bottom of the box body (1); and the discharge port (18) is located on the box body (1) between the second rotating plate (10) and the third rotating plate (19).

7. A gypsum raw material crushing device according to claim 6, characterized in that: The inner box (17) is fixedly provided with a material holding portion (171) protruding outward, the material holding portion (171) is evenly distributed on the inner box (17) and is communicated with the inner cavity of the inner box (17), and the material holding portion (171) is used to hold the material at the bottom of the inner cavity of the inner box (17); When the inner box body (17) rotates, the material holding portion (171) can rotate along with the inner box body (17) and move upward with the material, thereby causing the material to tumble.

8. A method for crushing gypsum raw materials, using a gypsum raw material crushing device according to any one of claims 1 to 7, characterized in that: The steps include: When the first crushing roller (2) rotates along with the first rotating plate (9), an extrusion force is generated between the first crushing roller (2) and the box body, thereby squeezing the material and achieving the purpose of squeezing and crushing the material; When the first crushing roller (2) moves inside the box body (1) around the axis of the box body, the first crushing roller (2) will also drive part of the material to move inside the box body (1) following the first crushing roller (2), thereby dynamically crushing the material.

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