Mechanical grinding equipment

Abstract

The invention relates to the technical field of mechanical grinding, and particularly discloses mechanical grinding equipment which comprises a working box. A feeding pipe is arranged at the top of the working box, a discharging pipe is arranged on the bottom wall of the working box, and a supporting rod is fixedly connected to the inner wall of the working box; the outer wall of the supporting rod is connected with an inflation bag extending into the discharging pipe through a thin rope. A grinding mechanism located at the top of the supporting rod is arranged in the working box. A blowing and sucking mechanism is arranged on the outer wall of the working box; the blowing and sucking mechanism can blow and suck air into and out of the inflatable bag in a reciprocating manner; the blowing and sucking mechanism promotes the inflatable bag to expand and contract in a reciprocating mode, materials in the discharging pipe are promoted to move, the materials are dredged, and the possibility that the materials are blocked in the discharging pipe is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical grinding, in particular to a mechanical grinding device. Background Art

[0002] Mechanical grinding equipment is widely used in various industrial production processes. Its main function is to Crushing and fine crushing are carried out to meet the requirements of subsequent production processes. However, in actual use, due to the characteristics of the material, such as viscosity and humidity, the discharge port is often blocked, which seriously affects the production efficiency and quality.

[0003] In the prior art, a vibration device is usually installed at the discharge port of the equipment to loosen the material by vibration to reduce the possibility of material clogging in the discharge port. However, the vibration device is prone to cause increased wear of the equipment during long-term operation and has high maintenance costs. Summary of the invention

[0004] The present application provides a mechanical grinding device, which can achieve the unblocking of materials at the discharge port through gas, reduce the possibility of material blockage at the discharge port, and ensure the continuous operation of the grinding work.

[0005] The present application provides a mechanical grinding device, which adopts the following technical solution: A mechanical grinding device comprises a working box; a feed pipe communicating with the interior of the working box is arranged on the top of the working box, and a discharge pipe is arranged on the bottom wall of the working box; a support rod is fixedly connected to the inner wall of the working box; an inflatable bag extending into the discharge pipe is connected to the outer wall of the support rod by a thin rope; the inflatable bag is in a contracted flat state; a grinding mechanism located at the top of the support rod is arranged inside the working box; the grinding mechanism can grind the material put into the working box from the feed pipe; a blowing and suction mechanism is arranged on the working box; the blowing and suction mechanism can reciprocate the blowing and suction in the inflatable bag.

[0006] By adopting the above technical scheme, when the material is ground, the material is transported to the working box through the feed pipe, and the material is ground by the grinding mechanism in the working box. After the material is ground into powder blocks, it falls to the bottom of the working box and is then transported to the outside of the working box through the discharge pipe. When the material is transported through the discharge pipe, the blowing and suction mechanism first blows air into the inflatable bag to expand the inflatable bag, and then evacuates the inflatable bag to shrink it into a flat shape. By making the inflatable bag perform reciprocating expansion and contraction actions, the material in the discharge pipe is prompted to move, the material is dredged, and the possibility of material clogging in the discharge pipe is reduced.

[0007] Preferably, the grinding mechanism includes a first grinding roller, a second grinding roller and a driving assembly; the first grinding roller is horizontally rotatably connected to the inner wall of the working box; the second grinding roller is horizontally rotatably connected to the inner wall of the working box on one side of the first grinding roller; the driving assembly is arranged on the working box, and the driving assembly can drive the first grinding roller and the second grinding roller to rotate in opposite directions.

[0008] By adopting the above technical solution, the driving component is started to make the first grinding roller and the second grinding roller rotate in opposite directions. When the material falls onto the first grinding roller and the second grinding roller, the material is ground through the cooperation of the first grinding roller and the second grinding roller.

[0009] Preferably, the driving assembly includes a driving motor; the driving motor is installed on the outer wall of the working box, and the output end of the driving motor is coaxially fixed to one end of the first grinding roller; a first spur gear is provided at the end of the first grinding roller away from the driving motor; a second spur gear meshing with the first spur gear is provided at the end of the second grinding roller close to the first spur gear.

[0010] By adopting the above technical solution, the driving motor is started to drive the first grinding roller to rotate. Under the meshing cooperation of the first spur gear and the second spur gear, the first grinding roller drives the second grinding roller to rotate in the opposite direction, so as to cause the first grinding roller and the second grinding roller to grind the material.

[0011] Preferably, the blowing and sucking mechanism includes a concave shell, an airbag and a pushing member; the concave shell is installed on the outer side wall of the working box away from the driving motor, and a pushing block is slidably connected to the inner wall of the bottom end of the concave shell through a spring; the airbag is arranged inside the concave shell, the airbag is located on the side of the push block connected to the spring, and the airbag is connected to an air pipe connected to the inflatable bag; the pushing member is arranged at the end of the first grinding roller away from the driving motor, and the pushing member can reciprocally squeeze the push block to cause the push block to squeeze the airbag to supply air.

[0012] By adopting the above technical solution, when the driving motor drives the first grinding roller to rotate, the pushing member can perform reciprocating squeezing work on the push block. When the pushing member squeezes the push block to move the compression spring, the airbag will be squeezed by the push block, and the gas inside the airbag will enter the inflatable bag through the air pipe to expand the inflatable bag; when the pushing member loses the squeezing effect on the push block, the push block slides back under the elastic force of the spring, the airbag is inflated, and the gas in the inflatable bag will be sucked back into the airbag, causing the inflatable bag to shrink, so that in the process of the pushing member reciprocatingly squeezing the push block, the inflatable bag performs reciprocating expansion and contraction actions.

[0013] Preferably, the end of the first grinding roller away from the driving motor extends to the outside of the working box; the pushing member includes a cam; the cam is fixedly connected to the end of the first grinding roller extending outside the working box; the end of the push block away from the spring extends to the outside of the concave shell and is provided with an arc surface; the cam can contact and cooperate with the arc surface of the push block.

[0014] By adopting the above technical solution, when the first grinding roller drives the cam to rotate, the cam cooperates with the arc surface at the end of the push block, and the cam can reciprocately squeeze the push block to slide, so as to prompt the airbag to blow and inhale the air in the inflatable bag reciprocally.

[0015] Preferably, a mounting plate located at the bottom of the first grinding roller and the second grinding roller is fixedly connected to the inner wall of the working box; and a screen is arranged on the mounting plate.

[0016] By adopting the above technical solution, the screen arranged on the mounting plate can screen the ground material, thereby controlling the particle size of the material output from the discharge pipe, so as to achieve more refined processing and production.

[0017] Preferably, the top surface of the mounting plate is horizontally rotatably connected to a first rotating shaft; an outer wall on one side of the first rotating shaft is fixedly connected to a hemispherical block via a first connecting rod, and an outer wall on a side of the first rotating shaft away from the hemispherical block is fixedly connected to an impact block in contact with the top surface of the mounting plate via a second connecting rod; the impact block is heavier than the hemispherical block; an extrusion component that can reciprocally squeeze the lower hem of the hemispherical block is provided on the outside of the mounting plate on a side of the hemispherical block away from the impact block.

[0018] By adopting the above technical solution, when the extrusion assembly squeezes the hemispherical block downward, the hemispherical block will drive the first rotating shaft to rotate so that the impact block swings upward. When the extrusion assembly loses the extrusion effect on the hemispherical block, the impact block swings back under the action of gravity and hits the top surface of the mounting plate. In the process of the extrusion assembly reciprocatingly squeezing the hemispherical block downward, the impact block reciprocates against the mounting plate, causing the screen and the material thereon to vibrate, so that the screen can better screen the material and reduce the possibility of material accumulation on the screen surface and clogging the mesh.

[0019] Preferably, the extrusion assembly includes a second rotating shaft and a sphere; the second rotating shaft is rotatably connected to the top surface of the mounting plate, and a first bevel gear is coaxially fixed to the top end of the second rotating shaft; a second bevel gear meshing with the first bevel gear is coaxially fixed to the outer wall of the end of the first grinding roller close to the second rotating shaft; the sphere is fixed to the outer wall of the second rotating shaft close to the hemispherical block through a third connecting rod, and the sphere can contact the arc surface at the top end of the hemispherical block to drive the hemispherical block to swing downward.

[0020] By adopting the above technical solution, under the meshing cooperation of the first bevel gear and the second bevel gear, the first grinding roller drives the second rotating shaft and the sphere to rotate during the rotation process. During the rotation process, the sphere cooperates with the arc surface at the top of the hemispherical block to make the hemispherical block reciprocate downward, thereby enabling the impact block to reciprocate and impact the mounting plate.

[0021] Preferably, the inflatable bag is provided with a plurality of pointed portions.

[0022] By adopting the above technical solution, when the inflatable bag is reciprocatingly expanded and contracted, the pointed part on the inflatable bag is also reciprocatingly expanded and contracted. The pointed part has a poking effect on the material during the expansion and contraction process, thereby improving the dredging effect on the material.

[0023] Preferably, a vacuum glove box is arranged on the top surface of the working box; a connecting pipe communicating with the working box is arranged on the bottom wall of the vacuum glove box; and the feeding pipe is arranged on the top of the vacuum glove box and communicates with the vacuum glove box.

[0024] By adopting the above technical solution, the material transported through the feed pipe will first enter the vacuum glove box, and then enter the working box through the connecting pipe. The set vacuum glove box can transfer the material so that the material can be gradually delivered to the working box for grinding processing based on the user's operation.

[0025] In summary, this application has the following beneficial effects: 1. The grinding mechanism is used to grind the material put into the working box, and the powdered material is then transported out of the working box through the discharge pipe. When the material is transported through the discharge pipe, the blowing and suction mechanism first blows air into the inflatable bag to expand the inflatable bag, and then evacuates the inflatable bag to shrink it into a flat shape. By making the inflatable bag perform reciprocating expansion and contraction actions, the material in the discharge pipe is moved, the material is dredged, and the possibility of material blockage in the discharge pipe is reduced; 2. The ground material will fall onto the screen surface, which can screen the ground material. The material with qualified particle size will pass through the screen and fall to the bottom of the working box, while the material with unqualified particle size will be blocked on the screen surface, thereby controlling the particle size of the output material; 3. The rotation of the first grinding roller will cause the hemispherical block of the extrusion assembly to move. When the hemispherical block of the extrusion assembly swings down, the impact block will swing up. When the extrusion assembly loses the extrusion effect on the hemispherical block, the impact block will swing back and hit the top surface of the mounting plate under the action of gravity. In the process of the extrusion assembly reciprocatingly squeezing the hemispherical block down, the impact block will reciprocately impact the surface of the mounting plate, causing the screen and the material thereon to vibrate, so that the screen can better screen the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic diagram of the structure of a mechanical grinding equipment; Figure 2 It is a schematic diagram of the internal structure of the working box in this application; Figure 3 It is a structural schematic diagram of the grinding mechanism in this application; Figure 4 It is a schematic diagram of the structure of the inflatable bag in this application; Figure 5 It is a structural schematic diagram of the blowing and suction mechanism in this application; Figure 6 It is a schematic diagram of the matching structure of the first grinding roller, the extrusion assembly and the sphere in the present application.

[0027] Explanation of the reference numerals in the accompanying drawings: 1. working box; 11. feeding pipe; 12. discharging pipe; 13. supporting rod; 14. thin rope; 15. vacuum glove box; 151. connecting pipe; 2. inflatable bag; 21. pointed part; 3. grinding mechanism; 31. first grinding roller; 32. second grinding roller; 33. driving assembly; 331. driving motor; 332. first spur gear; 333. second spur gear; 4. blowing and suction mechanism; 41. concave shell; 42. air bag; 43. pushing member; 431. cam; 44. spring; 45. pushing block; 46. air supply pipe; 5. mounting plate; 51. screen; 52. first rotating shaft; 53. hemispherical block; 54. impact block; 55. extrusion assembly; 551. second rotating shaft; 552. sphere; 553. first bevel gear; 554. second bevel gear. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper", "lower", "bottom" and "top" used in the following description refer to directions in the accompanying drawings, and the terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0029] The present invention discloses a mechanical grinding device, such as Figure 1 and Figure 2 As shown, it includes a work box 1, a vacuum glove box 15 and a grinding mechanism 3. The bottom end of the work box 1 is funnel-shaped, and a discharge pipe 12 is installed on the bottom wall of the work box 1. The vacuum glove box 15 is arranged on the top surface of the work box 1. A connecting pipe 151 is arranged at the bottom of the vacuum glove box 15. One end of the connecting pipe 151 is fixedly connected to the bottom wall of the vacuum glove box 15, and the other end is fixedly connected to the top wall of the work box 1, connecting the vacuum glove box 15 and the work box 1. A feeding pipe 11 connected to the vacuum glove box 15 is installed on the top wall of the vacuum glove box 15; the grinding mechanism 3 is arranged on the inner wall of the work box 1 near the top, and the grinding mechanism 3 can grind the material delivered to the work box 1.

[0030] The material is first transported to the vacuum glove box 15 through the feed pipe 11 for transfer, and then the user operates in the vacuum glove box 15 according to the needs, and the material is gradually transported to the working box 1 through the connecting pipe 151. Finally, the grinding mechanism 3 set in the working box 1 grinds the material, and the ground material is transported out of the working box 1 through the discharge pipe 12.

[0031] like Figure 2 and Figure 3 As shown, the grinding mechanism 3 includes a first grinding roller 31, a second grinding roller 32 and a driving assembly 33. The first grinding roller 31 is horizontally rotatably connected to the inner wall of the working box 1, the second grinding roller 32 is horizontally rotatably connected to the inner wall of the working box 1, the second grinding roller 32 is coaxially arranged with the first grinding roller 31 at the same height, and the driving assembly 33 is arranged at the end of the first grinding roller 31. The driving assembly 33 includes a driving motor 331, a first spur gear 332 and a second spur gear 333. The driving motor 331 is installed on the outer wall of the working box 1, and the output end of the driving motor 331 is coaxially fixed to one end of the first grinding roller 31. The first spur gear 332 is coaxially fixed to the outer wall of the end of the first grinding roller 31 away from the driving motor 331; the second spur gear 333 is coaxially fixed to the outer wall of the end of the second grinding roller 32 away from the driving motor 331, and the second spur gear 333 is meshed with the first spur gear 332.

[0032] When the material enters the working box 1, the driving motor 331 is started to drive the first grinding roller 31 to rotate. Under the meshing cooperation of the first spur gear 332 and the second spur gear 333, the first grinding roller 31 and the second grinding roller 32 rotate in opposite directions to grind the material conveyed to the working box 1, and output the material from the middle position between the first grinding roller 31 and the second grinding roller 32 after grinding.

[0033] like Figure 2 and Figure 3 As shown, a mounting plate 5 located at the bottom of the first grinding roller 31 and the second grinding roller 32 is horizontally fixedly connected to the inner wall of the working box 1, and a screen 51 is arranged on the mounting plate 5.

[0034] The ground material will fall onto the surface of the screen 51, which can screen the ground material. Materials with qualified particle sizes will pass through the screen 51 and fall to the bottom of the working box 1, while materials with unqualified particle sizes will be blocked on the surface of the screen 51, thereby controlling the particle size of the output material.

[0035] like Figure 2 and Figure 4As shown, a support rod 13 located at the bottom of the mounting plate 5 is fixedly connected to the inner wall of the working box 1, and an inflatable bag 2 extending into the discharge pipe 12 is suspended on the outer wall of the support rod 13 by a thin rope 14. The inflatable bag 2 is in a contracted and flattened state, and a plurality of pointed portions 21 are provided on the inflatable bag 2. A blowing and suction mechanism 4 that can reciprocally blow and suck air into the inflatable bag 2 is provided on the outer wall of the working box 1 away from the driving motor 331.

[0036] When the ground material is discharged through the discharge pipe 12, the blowing and suction mechanism 4 first blows air into the inflatable bag 2 to make the inflatable bag 2 expand, and then evacuates the air from the inflatable bag 2 to make the inflatable bag 2 shrink into a flat shape. By causing the inflatable bag 2 to perform reciprocating expansion and contraction actions, the material in the discharge pipe 12 moves, the material is unblocked, and the possibility of material clogging in the discharge pipe 12 is reduced.

[0037] like Figure 2 and Figure 5 As shown, the blowing and suction mechanism 4 includes a concave shell 41, an air bag 42, a pushing member 43 and a pushing block 45. The concave shell 41 is fixedly connected to the outer wall of the working box 1 away from the driving motor 331. The push block 45 is arranged with the open end of the concave shell 41 facing upward and is vertically slidably connected to the inner wall of the concave shell 41. The bottom surface of the pushing block 45 is connected to the inner wall of the bottom end of the concave shell 41 through a spring 44. The air bag 42 is arranged in the concave shell 41 at the bottom of the pushing block 45 and contacts the bottom surface of the pushing block 45. An air pipe 46 is connected to the air bag 42. The end of the air pipe 46 away from the air bag 42 is connected to the inflatable bag 2. The pushing member 43 is arranged at the far end of the first grinding roller 31. Away from the end of the driving motor 331, the end of the first grinding roller 31 away from the driving motor 331 extends to the circumference of the working box 1 and is located at the top of the concave shell 41. The pushing member 43 includes a cam 431. The cam 431 is fixedly connected to the outer wall of the end of the first grinding roller 31 extending to the top of the concave shell 41. The push block 45 extends to the top of the concave shell 41 away from the end of the spring 44 and is provided with an arc surface that can contact and cooperate with the cam 431. The cam 431 can reciprocately squeeze the push block 45 downward by cooperating with the arc surface during rotation. In order to increase the frequency of the cam 431 squeezing the push block 45, multiple cams 431 can be provided.

[0038] When the first grinding roller 31 rotates, it will drive the cam 431 located outside the working box 1 to rotate. When the cam 431 squeezes the push block 45 and moves the compression spring 44, the airbag 42 will be squeezed by the push block 45, and the gas inside the airbag 42 will enter the inflatable bag 2 to cause the inflatable bag 2 to expand; when the cam 431 loses the squeezing effect on the push block 45, the push block 45 slides back under the elastic force of the spring 44, the airbag 42 is inflated, and the gas in the inflatable bag 2 will be sucked back into the airbag 42 to cause the inflatable bag 2 to shrink, so that in the process of the cam 431 reciprocatingly squeezing the push block 45, the inflatable bag 2 will perform reciprocating expansion and contraction actions to achieve material dredging.

[0039] like Figure 2 and Figure 6 As shown, the top surface of the mounting plate 5 is horizontally rotatably connected to the first rotating shaft 52, and a hemispherical block 53 is fixedly connected to one side of the first rotating shaft 52 through a first connecting rod. The hemispherical block 53 is arranged horizontally with an arc surface facing upward, and an outer wall of the first rotating shaft 52 on a side away from the hemispherical block 53 is fixedly connected to a collision block 54 through a second connecting rod. The bottom surface of the collision block 54 contacts the top surface of the mounting plate 5, and the weight of the collision block 54 is higher than the weight of the hemispherical block 53. An extrusion assembly 55 driven by the first grinding roller 31 is arranged on the outside of the mounting plate 5 on a side of the hemispherical block 53 away from the collision block 54, and the extrusion assembly 55 can reciprocate and squeeze the hemispherical block 53 downward.

[0040] During the rotation of the first grinding roller 31, the extrusion assembly 55 will squeeze the hemispherical block 53 to swing downward. When the extrusion assembly 55 squeezes the hemispherical block 53 to swing downward, the impact block 54 will swing upward. When the extrusion assembly 55 loses the extrusion effect on the hemispherical block 53, the impact block 54 will swing back under the action of gravity and hit the top surface of the mounting plate 5, causing the screen 51 and the material thereon to vibrate, so that the screen 51 can better screen the material.

[0041] like Figure 2 and Figure 6 As shown, the extrusion assembly 55 includes a second rotating shaft 551, a sphere 552, a first bevel gear 553 and a second bevel gear 554. The second rotating shaft 551 is vertically rotatably connected to the top surface of the mounting plate 5 of the hemispherical block 53 away from the impact block 54. The first bevel gear 553 is coaxially fixed to the top of the second rotating shaft 551. The second bevel gear 554 is coaxially fixed to the outer wall of the end of the first grinding roller 31. The second bevel gear 554 is meshed with the first bevel gear 553. The sphere 552 is fixed to the outer wall of the second rotating shaft 551 close to the hemispherical block 53 through a third connecting rod. The sphere 552 can contact and cooperate with the arc surface at the top of the hemispherical block 53 to drive the hemispherical block 53 to swing down.

[0042] Through the meshing cooperation of the first bevel gear 553 and the second bevel gear 554, the first grinding roller 31 will drive the second rotating shaft 551 and the ball 552 to rotate during the rotation process. During the rotation process, the ball 552 will cooperate with the arc surface at the top of the hemispherical block 53 to make the hemispherical block 53 swing back and forth, so that the impact block 54 can reciprocate and impact the mounting plate 5.

[0043] Working principle: The material is transported through the feed pipe 11, the material first enters the vacuum glove box 15 and then enters the working box 1 through the connecting pipe 151. When the material enters the working box 1, the driving motor 331 is started to drive the first grinding roller 31 and the second grinding roller 32 to rotate, and the material is ground by the cooperation of the first grinding roller 31 and the second grinding roller 32 with opposite rotation directions. The ground material will fall onto the screen 51. After being screened by the screen 51, the material will fall to the bottom of the working box 1 and be transported out of the working box 1 through the discharge pipe 12; When the first grinding roller 31 rotates, the cam 431 located outside the working box 1 will be driven to rotate. When the cam 431 squeezes the push block 45 and moves the compression spring 44, the airbag 42 will be squeezed by the push block 45, and the gas inside the airbag 42 will enter the inflatable bag 2 through the air pipe 46, causing the inflatable bag 2 to expand; when the cam 431 loses the squeezing effect on the push block 45, the push block 45 slides back under the elastic force of the spring 44, the airbag 42 is inflated, and the gas in the inflatable bag 2 will be sucked back into the airbag 42, causing the inflatable bag 2 to shrink, thereby achieving in the process of the cam 431 reciprocatingly squeezing the push block 45, the inflatable bag 2 will reciprocate expansion and contraction action, and the reciprocating expansion and contraction action of the inflatable bag 2 will promote the movement of the material in the discharge pipe 12, dredge the material, and reduce the possibility of the material being blocked in the discharge pipe 12.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mechanical grinding device, characterized in that: The invention comprises a working box (1); a feeding pipe (11) communicating with the inside of the working box (1) is arranged on the top of the working box (1); a discharging pipe (12) is arranged on the bottom wall of the working box (1); a supporting rod (13) is fixedly connected to the inner wall of the working box (1); the outer wall of the supporting rod (13) is connected to an inflatable bag (2) extending into the discharging pipe (12) via a thin rope (14); the inflatable bag (2) is in a contracted flat state; a grinding mechanism (3) located at the top of the supporting rod (13) is arranged inside the working box (1); the grinding mechanism (3) can grind the material put into the working box (1) from the feeding pipe (11); a blowing and suction mechanism (4) is arranged on the working box (1); the blowing and suction mechanism (4) can reciprocate the blowing and suction in the inflatable bag (2).

2. A mechanical grinding device according to claim 1, characterized in that: The grinding mechanism (3) comprises a first grinding roller (31), a second grinding roller (32) and a driving assembly (33); the first grinding roller (31) is horizontally rotatably connected to the inner wall of the working box (1); the second grinding roller (32) is horizontally rotatably connected to the inner wall of the working box (1) on one side of the first grinding roller (31); the driving assembly (33) is arranged on the working box (1), and the driving assembly (33) can drive the first grinding roller (31) and the second grinding roller (32) to rotate in opposite directions.

3. A mechanical grinding device according to claim 2, characterized in that: The driving assembly (33) comprises a driving motor (331); the driving motor (331) is mounted on the outer wall of the working box (1); the output end of the driving motor (331) is coaxially fixedly connected to one end of the first grinding roller (31); a first spur gear (332) is arranged at the end of the first grinding roller (31) away from the driving motor (331); and a second spur gear (333) meshing with the first spur gear (332) is arranged at the end of the second grinding roller (32) close to the first spur gear (332).

4. A mechanical grinding device according to claim 3, characterized in that: The blowing and suction mechanism (4) comprises a concave shell (41), an air bag (42) and a pushing member (43); the concave shell (41) is installed on the outer side wall of the working box (1) away from the driving motor (331), and a pushing block (45) is slidably connected to the inner wall of the bottom end of the concave shell (41) through a spring (44); the air bag (42) is arranged inside the concave shell (41), and the air bag (42) is located on the side of the pushing block (45) connected to the spring (44), and the air bag (42) is connected to an air supply pipe (46) connected to the inflatable bag (2); the pushing member (43) is arranged at the end of the first grinding roller (31) away from the driving motor (331), and the pushing member (43) can reciprocately squeeze the pushing block (45) to prompt the pushing block (45) to squeeze the air bag (42) to supply air.

5. A mechanical grinding device according to claim 4, characterized in that: The end of the first grinding roller (31) away from the driving motor (331) extends to the outside of the working box (1); the pushing member (43) includes a cam (431); the cam (431) is fixedly connected to the end of the first grinding roller (31) extending outside the working box (1); the end of the pushing block (45) away from the spring (44) extends to the outside of the concave shell (41) and is provided with an arc surface; the cam (431) can contact and cooperate with the arc surface of the pushing block (45).

6. A mechanical grinding device according to claim 2, characterized in that: A mounting plate (5) located at the bottom of the first grinding roller (31) and the second grinding roller (32) is fixedly connected to the inner wall of the working box (1); a screen (51) is arranged on the mounting plate (5).

7. A mechanical grinding device according to claim 6, characterized in that: The top surface of the mounting plate (5) is horizontally rotatably connected to a first rotating shaft (52); an outer wall on one side of the first rotating shaft (52) is fixedly connected to a hemispherical block (53) via a first connecting rod; an outer wall on a side of the first rotating shaft (52) away from the hemispherical block (53) is fixedly connected to an impact block (54) in contact with the top surface of the mounting plate (5) via a second connecting rod; the impact block (54) is heavier than the hemispherical block (53); and an extrusion component (55) capable of reciprocatingly extruding the lower hem of the hemispherical block (53) is provided on the outside of the mounting plate (5) on a side of the hemispherical block (53) away from the impact block (54).

8. A mechanical grinding device according to claim 7, characterized in that: The extrusion assembly (55) comprises a second rotating shaft (551) and a sphere (552); the second rotating shaft (551) is rotatably connected to the top surface of the mounting plate (5), and a first bevel gear (553) is coaxially fixed to the top end of the second rotating shaft (551); a second bevel gear (554) meshing with the first bevel gear (553) is coaxially fixed to the outer wall of the end of the first grinding roller (31) close to the second rotating shaft (551); the sphere (552) is fixed to the outer wall of the second rotating shaft (551) close to the hemispherical block (53) through a third connecting rod, and the sphere (552) can contact the arc surface of the top end of the hemispherical block (53) to drive the hemispherical block (53) to swing downward.

9. A mechanical grinding device according to claim 1, characterized in that: The inflatable bag (2) is provided with a plurality of pointed portions (21).

10. A mechanical grinding device according to claim 1, characterized in that: A vacuum glove box (15) is arranged on the top surface of the working box (1); a connecting pipe (151) communicating with the working box (1) is arranged on the bottom wall of the vacuum glove box (15); and the feeding pipe (11) is arranged on the top of the vacuum glove box (15) and communicates with the vacuum glove box (15).

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