Non-metallic ore grinding device

Abstract

The utility model discloses a non-metal ore grinding device, and belongs to the technical field of non-metal ore processing, the non-metal ore grinding device comprises a crushing box, the top of the crushing box is provided with a feeding port, a first crushing roller and a second crushing roller are rotatably clamped in the crushing box, and the outer wall of the crushing box is provided with a first driving assembly used for driving the first crushing roller and the second crushing roller to rotate; the lower portion of the smashing box communicates with a grinding box, a flow guide groove and a grinding channel are formed in the grinding box, a first grinding roller and a second grinding roller are rotationally clamped to the grinding channel in sequence from top to bottom, a second driving assembly used for driving the first grinding roller and the second grinding roller to rotate is arranged on the outer side wall of the grinding box, and the lower portion of the grinding box communicates with a screening box; a fine screening net is slidably arranged in the screening box, a plurality of vibration motors are arranged at the bottom of the fine screening net, a hinge door is arranged on the side, close to the through hole, of the screening box, and the bottom of the screening box communicates with a collecting box. The grinding device has the effect of improving the grinding efficiency of the grinding device.

Description

Technical Field

[0001] The present application relates to the field of non-metallic ore processing technology, and particularly relates to a non-metallic ore grinding device. Background Art

[0002] At present, the processing of non-metallic ore powder is an important link in industrial production. Traditional ore grinding equipment often has problems such as high energy consumption, low efficiency, and uneven powder quality. With the continuous progress of technology, the market's demand for high-efficiency and energy-saving non-metallic ore grinding devices is becoming increasingly urgent.

[0003] In the related art, the patent with the publication number CN215843185U discloses a powder mill with a screening structure for non-metallic mineral processing, including a box body and a main rotating shaft. An inlet is arranged above the box body, the main rotating shaft is arranged above the grinding table, a grinding assembly is arranged at the lower end of the outer side of the main rotating shaft, the grinding assembly includes a bracket, a secondary rotating shaft and grinding wheels, the secondary rotating shaft is arranged below the bracket, a through hole is opened at the lower end of the box body, a screening box is arranged below the material conveying seat, the screening assembly includes a filter screen, a vibration motor and a material conveying port, the vibration motor is installed below the filter screen, a material conveying port is installed on one side of the screening box, and a discharge port is arranged below the screening box.

[0004] In view of the above related art, the inventor believes that in the above patent, a blade is used to crush non-metallic minerals. However, if the blade rotates at a high speed, the impact force between the blade and the non-metallic minerals will increase, so it is easy for the blade to be rolled or damaged. If the blade rotates at a low speed, the uniform degree of crushing of non-metallic minerals cannot be guaranteed, which will affect the grinding efficiency. Therefore, there will be inconvenience when using this device. Summary of the Utility Model

[0005] In order to improve the grinding efficiency of the grinding device, the present application provides a non-metallic ore grinding device.

[0006] The non-metallic ore grinding device provided by the present application adopts the following technical solution:

[0007] A non-metallic ore powder grinding device, comprising a crushing box, wherein a feeding port is arranged at the top of the crushing box, a first crushing roller and a second crushing roller are rotationally clamped inside the crushing box, the first crushing roller and the second crushing roller are symmetrically arranged inside the crushing box, a first driving assembly for driving the first crushing roller and the second crushing roller to rotate is arranged on the outer wall of the crushing box, a grinding box is communicated below the crushing box, a diversion groove and a grinding channel are arranged inside the grinding box, a first grinding roller and a second grinding roller are rotationally clamped in sequence from top to bottom in the grinding channel, a second driving assembly for driving the first grinding roller and the second grinding roller to rotate is arranged on the outer side wall of the grinding box, a screening box is communicated below the grinding box, a fine screening mesh is slidably arranged inside the screening box, a plurality of vibration motors are arranged at the bottom of the fine screening mesh, a through hole for the fine screening mesh to pass through is arranged on one side of the screening box, a handle is arranged on one side of the fine screening mesh close to the through hole, a hinged door is arranged on one side of the screening box close to the through hole, a collection box is communicated at the bottom of the screening box, a diversion cavity is arranged inside the collection box, a closing door is hinged at the bottom outlet of the diversion cavity, a first fixing block is arranged on the closing door, second fixing blocks are arranged on both the upper and lower surfaces of the fixing block, and a fixing assembly for fixing the closing door is arranged inside the second fixing block.

[0008] By adopting the above technical solutions, the operator drives the crushing rollers in the crushing box and the grinding rollers in the grinding box to rotate respectively by using the first driving assembly and the second driving assembly, and then the operator locks the closing door by using the fixing assembly. The operator pours the non-metallic ore to be ground into the feeding port at the top of the crushing box. The non-metallic ore is crushed in the crushing box and falls into the grinding box through the diversion groove and the grinding channel for grinding treatment. The ground non-metallic ore falls on the screen in the screening box. The vibration motors are started, and the vibration motors drive the screen to vibrate to screen the falling non-metallic ore powder. The qualified ones fall into the collection box below through the fine screening mesh. The operator can open the hinged door and take out the fine screening mesh from the through hole through the handle to collect the non-metallic ore powder on the fine screening mesh.

[0009] Preferably, the first driving assembly includes a driving gear sleeved on the rotating shaft of the first crushing roller, a driven gear sleeved on the rotating shaft of the second crushing roller, and a driving motor arranged on the rotating shaft of the first crushing roller. The driving gear and the driven gear are meshed with each other, a fixed box body is arranged on the outer wall of the crushing box body, and the driving motor is fixed to the inner wall of the fixed box body.

[0010] By adopting the above technical solution, the operator starts the driving motor, and the driving motor rotates to drive the driving gear to rotate. The driving gear rotates to drive the driven gear to rotate, thereby realizing that the first crushing roller and the second crushing roller in the crushing box rotate simultaneously in opposite directions along with the rotation of the rotating shaft, and completing the crushing process of the incoming non-metallic ore.

[0011] Preferably, the second driving assembly includes a pulley one sleeved on the rotating shaft of the first crushing roller, a pulley two sleeved on the output shaft of the first grinding roller, a pulley three sleeved on the output shaft of the second grinding roller, a belt one sleeved on the outer walls of the pulley one and the pulley two, and a belt two sleeved on the outer walls of the pulley one and the pulley three.

[0012] By adopting the above technical solution, the driving motor rotates to drive the pulley one sleeved on the rotating shaft of the first crushing roller to rotate. The pulley one drives the first grinding roller to rotate through the pulley two and the belt one, and the pulley one drives the second grinding roller to rotate through the pulley three and the belt two, thereby realizing the grinding process of the crushed non-metallic ore.

[0013] Preferably, uneven grinding textures are uniformly arranged on the outer surface of the first crushing roller.

[0014] By adopting the above technical solution, the setting of the grinding textures not only enhances the wear resistance of the first grinding roller, but also can generate more grinding points during the grinding process, improving the grinding efficiency of the non-metallic ore.

[0015] Preferably, an adsorption magnet is arranged at one end of the fine screening mesh away from the hinged door. A fixed slot for the plug-in fit of the fine screening mesh is formed on the inner wall of the screening box, and a fixed magnet is arranged on the inner wall of the fixed slot. The adsorption magnet cooperates with the fixed magnet.

[0016] By adopting the above technical solution, the adsorption magnet at the tail of the fine screening mesh is adsorbed and matched with the fixed magnet in the fixed slot, making the device more stable during operation and increasing the stability of the internal structure of the screening box.

[0017] Preferably, guide blocks are arranged on both sides of the fine screening mesh, and first sliding grooves for the sliding fit of the guide blocks are formed on the inner wall of the screening box.

[0018] By adopting the above technical solution, the setting of the guide blocks plays a guiding role in the sliding of the fine screening mesh in the screening box, preventing the fine screening mesh from shifting during the sliding process.

[0019] Preferably, the fixing component includes a plug-in block slidably disposed in the second fixing block, and a fixing spring fixedly connected to the plug-in block. An inclined surface is provided on the end surface of the plug-in block close to the first fixing block. A second sliding groove for the sliding fit of the plug-in block is formed in the second fixing block. A plug-in groove for the plug-in fit of the plug-in block is formed in the first fixing block. An unlocking component for unlocking the closing door is provided on the second fixing block.

[0020] By adopting the above technical solution, the operator rotates to close the closing door, and the first fixing block rotates together with the closing door. When the first fixing block abuts against the inclined surface of the plug-in block, the operator continues to rotate the closing door. Under the action of the inclined surface and the first fixing block, the plug-in block moves in the second sliding groove, and at this time the fixing spring is in a compressed state. When the first fixing block abuts against the outer wall of the collection box, the plug-in groove matches the plug-in block, and the plug-in block pops out under the action of the elastic force of the fixing spring and is inserted into the plug-in groove to complete the fixing of the closing door.

[0021] Preferably, the unlocking component includes a push rod slidably disposed in the second fixing block, a push plate disposed on one side of the push rod, and an unlocking spring fixedly connected to the push plate. An inclined surface is provided on the end surface of the push rod close to the plug-in block. The end surface of the push rod away from the plug-in block penetrates through the second fixing block. A third sliding groove for the sliding fit of the push rod and a fourth sliding groove for the sliding fit of the push plate are formed in the second fixing block. A fifth sliding groove for the cooperation of the push rod is formed in the plug-in block.

[0022] By adopting the above technical solution, the operator presses the push rod to move in the third sliding groove, and the movement of the push rod drives the push plate to move in the fourth sliding groove. At this time, the unlocking spring is in a compressed state. The operator continues to press the push rod, and the inclined surface of the push rod cooperates with the fifth sliding groove. At this time, the plug-in block moves in the second sliding groove, and the fixing spring is in a compressed state. When the plug-in block completely disengages from the plug-in groove on the first fixing block, the unlocking of the closing door is completed.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The operator uses the first driving component and the second driving component to drive the crushing roller in the crushing box and the grinding roller in the grinding box to rotate respectively. Then, the operator uses the fixing component to lock the closing door. The operator imports the non-metallic ore to be ground from the feeding port at the top of the crushing phase. The non-metallic ore is crushed in the crushing box and falls into the grinding box through the diversion groove and the grinding channel for grinding treatment. The ground non-metallic ore falls on the screen in the screening box. The vibration motor is started, and the vibration motor drives the screen to vibrate to screen the falling non-metallic ore powder. The qualified ones fall into the collection box below through the fine screen. The operator can open the hinged door and take out the fine screening net from the through hole through the handle and collect the non-metallic ore powder on the fine screening net;

[0025] 2. The operator starts the driving motor. The driving motor rotates to drive the driving gear to rotate. The driving gear rotates to drive the driven gear to rotate, thereby realizing that the first crushing roller and the second crushing roller in the crushing box rotate in opposite directions simultaneously with the rotation of the rotating shaft to complete the crushing treatment of the incoming non-metallic ore;

[0026] 3. The operator presses the push rod to move in the third sliding groove. The movement of the push rod drives the push plate to move in the fourth sliding groove. At this time, the unlocking spring is in a compressed state. The operator continues to press the push rod. The inclined surface of the push rod cooperates with the fifth sliding groove. At this time, the plug block moves in the second sliding groove, and the fixing spring is in a compressed state. When the plug block completely disengages from the plugging groove on the first fixing block, the unlocking of the closing door is completed. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of a non-metallic ore grinding device according to an embodiment of the present application.

[0028] Figure 2 is a schematic internal structure diagram of a non-metallic ore grinding device according to an embodiment of the present application.

[0029] Figure 3 is a schematic internal structure diagram of a non-metallic ore grinding device according to an embodiment of the present application from another perspective.

[0030] Figure 4 is a schematic internal structure diagram of the screening box according to an embodiment of the present application.

[0031] Figure 5 is a schematic internal structure diagram of the closing door according to an embodiment of the present application.

[0032] Reference numerals: 1, crushing box; 11, feeding port; 12, first crushing roller; 13, second crushing roller; 14, fixed box body; 2, grinding box; 21, diversion groove; 22, grinding channel; 23, first grinding roller; 231, grinding texture; 24, second grinding roller; 3, screening box; 31, fine screening mesh; 311, vibration motor; 312, handle; 313, adsorption magnet; 314, guide block; 32, through hole; 33, hinged door; 34, fixed slot; 341, fixed magnet; 35, first sliding slot; 4, collection box; 41, diversion cavity; 42, closing door; 43, first fixing block; 431, insertion slot; 44, second fixing block; 441, second sliding slot; 442, third sliding slot; 443, fourth sliding slot; 5, first driving assembly; 51, driving gear; 52, driven gear; 53, driving motor; 6, second driving assembly; 61, first pulley; 62, second pulley; 63, third pulley; 64, first belt; 65, second belt; 7, fixing assembly; 71, insertion block; 711, fifth sliding slot; 72, fixing spring; 8, unlocking assembly; 81, push rod; 82, push plate; 83, unlocking spring. Detailed implementation mode

[0033] The following further elaborates on this application in conjunction with the attached Figures 1-5 drawings.

[0034] An embodiment of this application discloses a non-metallic ore grinding device. Refer to Figure 1 、 Figure 2 , a non-metallic ore grinding device includes a crushing box 1, and a feeding port is arranged at the top of the crushing box 1. A first crushing roller 12 and a second crushing roller 13 are arranged in the crushing box 1. The first crushing roller 12 and the second crushing roller 13 are horizontally arranged, and the first crushing roller 12 and the second crushing roller 13 are rotationally clamped in the crushing box 1. A fixed box body 14 is installed on the outer wall of the crushing box 1. The fixed box body 14 is fixedly connected to the outer wall of the crushing box 1, and a first driving assembly 5 is arranged on the outer wall of the crushing box 1.

[0035] Refer to Figure 2 , the first driving assembly 5 includes a driving gear 51, a driven gear 52, and a driving motor 53. The driving gear 51 is sleeved on the rotating shaft of the first crushing roller 12, the driven gear 52 is sleeved on the rotating shaft of the second crushing roller 13, and the driving gear 51 and the driven gear 52 are meshed with each other. The output shaft of the driving motor 53 is fixedly connected to the rotating shaft of the first crushing roller 12.

[0036] The operator starts the driving motor 53. The driving motor 53 rotates to drive the driving gear 51 to rotate. The driving gear 51 rotates to drive the driven gear 52 to rotate, so as to realize the rotation of the first crushing roller 12 and the second crushing roller 13 in opposite directions simultaneously along with the rotation of the rotating shaft, and complete the crushing treatment of the incoming non-metallic ore.

[0037] Reference Figure 2 、 Figure 3 As shown in FIGS. 1 and 2, a grinding box 2 is connected to the bottom of the crushing box 1. A diversion groove 21 and a grinding channel 22 are formed in the grinding box 2. The four sides of the diversion groove 21 are all inclined surfaces, which play a role in guiding the non-metallic ore falling into the crushing box 1. The cross-section of the grinding channel 22 is in the shape of a horn with a larger upper part and a smaller lower part, which is convenient for multi-layer grinding of the crushed non-metallic ore. A first grinding roller 23 and a second grinding roller 24 are arranged in the grinding box 2. The first grinding roller 23 and the second grinding roller 24 are both rotationally clamped in the grinding box 2. Grinding textures 231 are arranged on the outer surface of the first grinding roller 23. The arrangement of the grinding textures 231 enhances the wear resistance of the first grinding roller 23 and improves the grinding efficiency.

[0038] Reference Figure 2 As shown in FIG. 3, a second driving assembly 6 is arranged on the outer wall of the grinding box 2. The second driving assembly 6 includes a first pulley 61, a second pulley 62, a third pulley 63, a first belt 64 and a second belt 65. The first pulley 61 is sleeved on the rotating shaft of the first crushing roller 12. The second pulley 62 is sleeved on the output shaft of the first grinding roller 23. The third pulley 63 is sleeved on the output shaft of the second grinding roller 24. The first belt 64 is sleeved on the outer walls of the first pulley 61 and the second pulley 62. The second belt 65 is sleeved on the outer walls of the first pulley 61 and the third pulley 63.

[0039] The rotation of the rotating shaft of the first crushing roller 12 drives the first pulley 61 to rotate. The first pulley 61 drives the first grinding roller 23 to rotate through the second pulley 62 and the first belt 64, realizing the primary grinding of the non-metallic ore falling into the grinding box 2. The first pulley 61 drives the second grinding roller 24 to rotate through the third pulley 63 and the second belt 65, performing secondary grinding on the ground non-metallic ore and improving the grinding accuracy of the device.

[0040] Reference Figure 2 、 Figure 4 As shown in FIGS. 4 and 5, a screening box 3 is connected below the grinding box 2. A fine screening mesh 31 is slidably arranged inside the screening box 3. A plurality of vibration motors 311 are arranged at the bottom of the fine screening mesh 31. A through hole 32 is formed on one side of the screening box 3. The inner wall of the through hole 32 is slidably matched with the outer wall of the fine screening mesh 31. A handle 312 is arranged on one side of the fine screening mesh 31 close to the through hole 32. The handle 312 is fixedly connected to the fine screening mesh 31. A fixed slot 34 is formed inside the screening box 3. The inner wall of the fixed slot 34 is slidably matched with the outer wall of the fine screening mesh 31.

[0041] Reference Figure 4, an adsorption magnet 313 is provided at the tail of the fine screening box 3. The adsorption magnet 313 is fixedly connected to the tail of the fine screening mesh 31. A fixing magnet 341 is provided on the inner wall of the fixing slot 34, and the fixing magnet 341 is fixedly connected to the inner wall of the fixing slot 34. Guide blocks 314 are provided on both sides of the fine screening mesh 31, and the guide blocks 314 are fixedly connected to the fine screening mesh 31. First sliding grooves 35 and fourth sliding grooves 443 are formed on the inner side wall of the screening box 3, and the inner walls of the first sliding grooves 35 and fourth sliding grooves 443 are slidably matched with the outer walls of the guide blocks 314. A hinged door 33 is provided on the outer wall of the screening box 3 close to the through hole 32.

[0042] The operator first puts the fine screening mesh 31 into the screening box 3 from the through hole 32. At this time, the guide block 314 moves into the first sliding groove 35 and the fourth sliding groove 443. Then the operator continues to push the fine screening mesh 31 through the handle 312. When the adsorption magnet 313 at the tail of the fine screening mesh 31 is adsorbed together with the fixing magnet 341 in the fixing slot 34, the positioning and installation of the fine screening mesh 31 are completed.

[0043] Refer to Figure 1 , Figure 5 , a collection box 4 is provided below the screening box 3. A diversion cavity 41 is arranged inside the collection box 4, and a closing door 42 is hingedly arranged at the outlet of the diversion cavity 41. A first fixing block 43 is fixedly connected to the closing door 42. Second fixing blocks 44 are arranged on both the upper and lower surfaces of the first fixing block 43, and the second fixing blocks 44 are fixedly connected to the outer wall of the collection box 4. A fixing component 7 is arranged inside the second fixing blocks 44.

[0044] Refer to Figure 5 , the fixing component 7 includes a plug-in block 71 and a fixing spring 72, and the plug-in block 71 is arranged vertically. The plug-in block 71 is slidably arranged in the second fixing block 44, and an inclined surface is arranged on the end surface of the plug-in block 71 close to the first fixing block 43. A second sliding groove 441 is formed inside the second fixing block 44, and the inner wall of the second sliding groove 441 is slidably matched with the outer wall of the plug-in block 71. The fixing spring 72 is arranged vertically, one end of the fixing spring 72 is fixedly connected to the plug-in block 71, and the other end is fixedly connected to the inner wall of the second sliding groove 441. A plug-in groove 431 is formed on the first fixing block 43, and the inner wall of the plug-in groove 431 is slidably matched with the outer wall of the plug-in block 71.

[0045] The operator rotates the closing door 42. When the first fixing block 43 abuts against the inclined surface of the plug-in block 71, the operator continues to rotate the closing door 42. The plug-in block 71 moves in the second sliding groove 441 under the action of the inclined surface and the first fixing block 43. At this time, the fixing spring 72 is in a compressed state. When the closing door 42 abuts against the outer wall of the collection box 4, the plug-in block 71 pops out under the elastic force of the fixing spring 72 and is inserted into the plug-in groove 431, completing the fixation of the closing door 42.

[0046] Refer toFigure 5 Inside the second fixing block 44, an unlocking component 8 is provided. The unlocking component 8 includes a pushing rod 81, a pushing plate 82 and an unlocking spring 83. The pushing rod 81 is horizontally arranged and slidably penetrates through the second fixing block 44. An inclined surface is provided on the end face of the pushing rod 81 close to the inserting block 71. The pushing plate 82 is vertically arranged and fixedly connected to the pushing rod 81. A third sliding groove 442 and a fourth sliding groove 443 are formed in the second fixing block 44. The inner wall of the third sliding groove 442 is slidably matched with the outer wall of the pushing rod 81, and the inner wall of the fourth sliding groove 443 is slidably matched with the outer wall of the pushing plate 82. A fifth sliding groove 711 is formed in the inserting rod 71, and the inner wall of the fifth sliding groove 711 is slidably matched with the outer wall of the pushing rod 81. The unlocking spring 83 is horizontally arranged. One end of the unlocking spring 83 is fixedly connected to the pushing plate 82, and the other end is fixedly connected to the inner wall of the fourth sliding groove 443.

[0047] The operator presses the pushing rod 81, and the movement of the pushing rod 81 drives the movement of the pushing plate 82. At this time, the unlocking spring 83 is in a compressed state. The inclined surface of the pushing rod 81 cooperates with the fifth sliding groove 711 in the inserting block 71. The operator continues to press. When the inserting block 71 completely disengages from the inserting groove 431, the unlocking of the closing door 42 is completed.

[0048] The implementation principle of a non-metallic ore grinding device according to an embodiment of the present application is as follows: The operator first starts the driving motor 53 to drive the crushing rollers and grinding rollers in the crushing box 1 and the grinding box 2 to rotate. Then the operator pours the non-metallic ore from the feeding port 11 into the crushing box 1 for crushing. The crushed non-metallic ore falls into the grinding box 2 for grinding. The ground non-metallic ore after grinding falls into the screening box 3 for screening. The qualified ones fall through the fine screening mesh 31 into the lower collecting box 4. The operator can open the hinged door 33 and take out the fine screening mesh 31 from the through hole 32 through the handle 312 to collect the non-metallic ore powder on the fine screening mesh 31.

[0049] When it is necessary to take out the non-metallic ore powder in the collecting box 4, the operator can press the pushing rod 81. The movement of the pushing rod 81 drives the movement of the pushing plate 82. At this time, the unlocking spring 83 is in a compressed state. The operator continues to press the pushing rod 81. The inclined surface of the pushing rod 81 cooperates with the fifth sliding groove 711. At this time, the inserting block 71 moves in the second sliding groove 441, and the fixing spring 72 is in a compressed state. When the inserting block 71 completely disengages from the inserting groove 431 on the first fixing block 43, the unlocking of the closing door 42 is completed. Then the ground non-metallic ore powder collected can be taken out from the bottom outlet of the diversion cavity 41.

[0050] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A non-metallic ore powder grinding device, characterized in that: It includes a crushing box (1). A feeding port (11) is provided at the top of the crushing box (1). A first crushing roller (12) and a second crushing roller (13) are rotatably and clamped inside the crushing box (1). The first crushing roller (12) and the second crushing roller (13) are symmetrically arranged in the crushing box (1). A first driving assembly (5) for driving the first crushing roller (12) and the second crushing roller (13) to rotate is provided on the outer wall of the crushing box (1). A grinding box (2) is communicated below the crushing box (1). A diversion groove (21) and a grinding channel (22) are provided inside the grinding box (2). A first grinding roller (23) and a second grinding roller (24) are rotatably and clamped in sequence from top to bottom in the grinding channel (22). A second driving assembly (6) for driving the first grinding roller (23) and the second grinding roller (24) to rotate is provided on the outer side wall of the grinding box (2). A screening box (3) is communicated below the grinding box (2). A fine screening mesh (31) is slidably arranged in the screening box (3). A plurality of vibration motors (311) are provided at the bottom of the fine screening mesh (31). A through hole (32) for the fine screening mesh (31) to pass through is provided on one side of the screening box (3). A handle (312) is provided on the side of the fine screening mesh (31) close to the through hole (32). A hinged door (33) is provided on the side of the screening box (3) close to the through hole (32). A collection box (4) is communicated at the bottom of the screening box (3). A diversion cavity (41) is provided inside the collection box (4). A closing door (42) is hinged at the bottom outlet of the diversion cavity (41). A first fixing block (43) is provided on the closing door (42). Second fixing blocks (44) are provided on both the upper and lower surfaces of the fixing block. A fixing assembly (7) for fixing the closing door (42) is provided inside the second fixing block (44).

2. The non-metallic ore powder grinding device according to claim 1, characterized in that: The first driving assembly (5) includes a driving gear (51) sleeved on the rotating shaft of the first crushing roller (12), a driven gear (52) sleeved on the rotating shaft of the second crushing roller (13), and a driving motor (53) provided on the rotating shaft of the first crushing roller (12). The driving gear (51) and the driven gear (52) are meshed with each other. A fixing box body (14) is provided on the outer wall of the crushing box (1) body. The driving motor (53) is fixed to the inner wall of the fixing box body (14).

3. The non-metallic ore powder grinding device according to claim 1, characterized in that: The second driving assembly (6) includes a first belt pulley (61) sleeved on the rotating shaft of the first crushing roller (12), a second belt pulley (62) sleeved on the output shaft of the first grinding roller (23), a third belt pulley (63) sleeved on the output shaft of the second grinding roller (24), a first belt (64) sleeved on the outer walls of the first belt pulley (61) and the second belt pulley (62), and a second belt (65) sleeved on the outer walls of the first belt pulley (61) and the third belt pulley (63).

4. A non-metallic ore powder grinding device according to claim 1, characterized in that: Uneven grinding textures (231) are uniformly arranged on the outer surface of the first crushing roller (12).

5. A non-metallic ore powder grinding device according to claim 1, characterized in that: One end of the fine screening mesh (31) away from the hinge door (33) is provided with an adsorption magnet (313). A fixed slot (34) for the plug-in fit of the fine screening mesh (31) is formed in the inner wall of the screening box (3). A fixed magnet (341) is arranged on the inner wall of the fixed slot (34), and the adsorption magnet (313) cooperates with the fixed magnet (341).

6. A non-metallic ore powder grinding device according to claim 1, characterized in that: Guide blocks (314) are arranged on both sides of the fine screening mesh (31). First sliding grooves (35) for the sliding fit of the guide blocks (314) are formed in the inner wall of the screening box (3).

7. A non-metallic ore powder grinding device according to claim 1, characterized in that: The fixing component (7) includes a plug-in block (71) slidably arranged in the second fixing block (44), and a fixing spring (72) fixedly connected to the plug-in block (71). An inclined surface is arranged on the end face of the plug-in block (71) close to the first fixing block (43). A second sliding groove (441) for the sliding fit of the plug-in block (71) is formed in the second fixing block (44). A plug-in groove (431) for the plug-in fit of the plug-in block (71) is formed in the first fixing block (43). An unlocking component (8) for unlocking the closing door (42) is arranged on the second fixing block (44).

8. A non-metallic ore powder grinding device according to claim 7, characterized in that: The unlocking component (8) includes a push rod (81) slidably arranged in the second fixing block (44), a push plate (82) arranged on one side of the push rod (81), and an unlocking spring (83) fixedly connected to the push plate (82). An inclined surface is arranged on the end face of the push rod (81) close to the plug-in block (71). The end face of the push rod (81) away from the plug-in block (71) penetrates out of the second fixing block (44). A third sliding groove (442) for the sliding fit of the push rod (81) and a fourth sliding groove (443) for the sliding fit of the push plate (82) are formed in the second fixing block (44). A fifth sliding groove (711) for the cooperation of the push rod (81) is formed in the plug-in block (71).

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