Multi-stage grinding device for aluminum oxide powder processing

Abstract

The utility model provides a multistage grinding device for aluminum oxide powder processing, which relates to the technical field of aluminum oxide powder processing and comprises a box body, two crushing devices are arranged in an inner cavity of a feeding bin, a material conveying device is arranged in an inner cavity of a material conveying bin, two first grinding devices are arranged at the top of an inner cavity of the box body, and two second grinding devices are arranged at the bottom of an inner cavity of the box body. A second grinding device is arranged in an inner cavity of the box body. According to the aluminum oxide crushing device, the two crushing motors operate to drive the multiple crushing cutters to extrude and crush aluminum oxide, the conveying motor operates to enable the auger sheet to drive the aluminum oxide to be pushed and conveyed, the aluminum oxide enters the box body, and the two grinding motors operate to drive the multiple grinding rollers to extrude and grind the falling aluminum oxide; the forward and reverse motor operates to drive the second grinding roller to repeatedly grind aluminum oxide which is not powdery back and forth, and the second grinding roller can push the aluminum oxide which is ground into powder to fall down through a plurality of screen holes, so that the aluminum oxide powder falls and is collected in the collecting box.

Description

TECHNICAL FIELD

[0001] The utility model relates to alumina powder processing technical field especially alumina powder processing's multistage grinding device. BACKGROUND

[0002] Alumina is a white solid, almost insoluble in water, odorless, hardly soluble in water, melting point is about 2050 DEG C, boiling point is about 2980 DEG C. Alumina has wide application in industry, for example, can be used as refractory material, high temperature sintered alumina is called artificial corundum or artificial gem, can be used to make mechanical bearing or diamond in clock. Alumina is also an important chemical reagent, can be used for dehydration, adsorption, catalysis etc. reaction, in addition, it is also used for smelting aluminum raw material.

[0003] In prior art, the existing grinding device is directly put into a large amount of alumina raw material when grinding alumina, the speed of alumina feeding cannot be controlled, the alumina raw material is easy to accumulate on the surface of the grinding roller, the grinding device is blocked, and the grinding effect is affected. Secondly, the existing grinding device is single, can only carry out single grinding, the alumina cannot be completely crushed, and the efficiency of alumina grinding into powder is low.

[0004] Therefore, the alumina powder processing multistage grinding device is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems in prior art.

[0006] In order to realize the above object, the utility model adopts the following technical scheme: alumina powder processing multistage grinding device, comprising: box, the top of the box is installed with the discharge bin, the top of the discharge bin is installed with the material conveying bin, the top of the material conveying bin is installed with the feeding bin on one side, the bottom end of the material conveying bin is installed with two supporting legs on one side, the bottom end of two supporting legs is installed with the supporting plate, the supporting plate is fixedly installed on the surface of the box, the inner chamber of the feeding bin is provided with two crushing devices, the inner chamber of the material conveying bin is provided with the material conveying device, the top of the inner chamber of the box is provided with two grinding devices one, the inner chamber of the box is fixedly installed with the sieve plate, a plurality of sieve holes are formed in the surface of the sieve plate, the inner chamber of the box is provided with grinding device two, the bottom of the inner chamber of the box is movably installed with the collecting box.

[0007] As a preferred implementation form, one side of the box surface is provided with a control terminal, the bottom of the box surface side is provided with a switch door one through a hinge, the surface of the switch door one is provided with a handle one, the surface of the box is provided with a switch door two through a hinge, one side of the surface of the switch door two is provided with a handle two, the inner cavity of the box is fixedly provided with a fixed plate, the surface of the fixed plate is provided with a movable groove, the bottom of the box inner cavity is provided with two T-shaped moving grooves, and one side of the box inner wall is provided with a mounting shell.

[0008] As a preferred implementation form, the crushing device comprises a crushing motor, the crushing motor is fixedly installed on one side of the feeding bin, the output end of the crushing motor is fixedly provided with a rotating rod one, one end of the rotating rod one is connected to one side of the inner wall of the feeding bin through a bearing, and a plurality of crushing knives are installed on the surface of the rotating rod one.

[0009] As a preferred implementation form, the feeding device comprises a feeding motor, the feeding motor is fixedly embedded on one side of the feeding bin, the output end of the feeding motor is fixedly provided with a rotating rod two, one end of the rotating rod two is connected to one side of the inner wall of the feeding bin through a bearing, and the surface of the rotating rod two is provided with a worm screw.

[0010] As a preferred implementation form, the grinding device one comprises a grinding motor, the grinding motor is fixedly embedded on one side of the box, the output end of the grinding motor is fixedly provided with a mounting rod one, one end of the mounting rod one is provided with a grinding roller one, the surface of the grinding roller one is provided with a plurality of grinding blocks one, one side of the grinding roller one is provided with a mounting rod two, and one side of the mounting rod two is connected to the inner wall of the box through a bearing.

[0011] As a preferred implementation form, the grinding device two comprises a forward and reverse motor, the forward and reverse motor is fixedly installed on one side of the inner wall of the box, the output end of the forward and reverse motor is fixedly provided with a threaded rod, one end of the threaded rod is connected to the other side of the inner wall of the box through a bearing, the surface of the threaded rod is movably sleeved with a moving block, one side of the moving block is provided with a connecting rod one, one end of the connecting rod one is provided with a grinding roller two through a bearing, the surface of the grinding roller two is provided with a plurality of grinding blocks two, one side of the grinding roller two is provided with a connecting rod two through a bearing, one end of the connecting rod two is provided with a sliding block, the surface of the sliding block is movably embedded with a sliding rod, both ends of the sliding rod are fixedly installed on both sides of the inner wall of the mounting shell, and the moving block moves in the inner part of the movable groove.

[0012] As a preferred implementation form, one side of the collection box is fixedly provided with a handle, and the bottom end of the collection box is provided with two T-shaped sliding plates, both of which are movably arranged in the two T-shaped moving grooves.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are that:

[0014] 1、 the utility model discloses, crushing motor, feed motor, grinding motor, positive and negative motor are electrically connected with control terminal, when the alumina powder is processed and grinds, the crushing motor, feed motor, grinding motor, positive and negative motor are started through control terminal, the alumina raw material is added to the inside of feed bin, two crushing motors operate and drive two rotating rods one to rotate to the inside simultaneously, the multiple crushing knives on the surface of rotating rod one can extrude and crush the alumina raw material, the crushed alumina raw material can enter the inside of feed bin, the feed motor operates and drives rotating rod two to rotate, the auger piece on the surface of rotating rod two can drive the alumina raw material in the inside of feed bin to push to the right side and feed, so that the alumina raw material is conveyed to the inside of discharge bin, and falls into the inside of box through discharge bin, the alumina raw material is preliminarily crushed through the setting crushing device, and the crushed alumina is conveniently conveyed through the feed device, the speed of alumina feeding can be controlled through the feed device, a large amount of alumina can be avoided to directly enter the inside of the device and cause blockage, and the grinding effect of alumina can be improved.

[0015] 2、 the utility model discloses, two grinding motors operate and drive two mounting rods one to rotate to the inside simultaneously, the multiple grinding blocks one on the surface of grinding roller one can extrude and grind the falling alumina raw material, can make the alumina raw material be ground into powder, the ground alumina falls to the surface of sieve plate, and the positive and negative motor operates and drives the threaded rod to rotate reversely, so that the moving block drives the grinding block two on the surface of grinding roller two to grind the alumina that has not become powder again, since the multiple grinding blocks two on the surface of grinding roller two all adhere to the surface of sieve plate, the grinding block two can back and forth roll and grind the alumina that has not become powder, and the grinding roller two can push the ground alumina to fall down through multiple sieve holes, so that the alumina powder falls and is collected in the inside of collecting box, and the collecting box can be pulled out using the handle, so that the ground alumina is collected, the alumina is ground through the setting grinding device one, and then is ground and crushed again through the grinding device two, the effect of multistage grinding is achieved, and the grinding efficiency of alumina can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view three-dimensional structure schematic diagram of multistage grinding device for alumina powder processing provided by the utility model;

[0017] Figure 2 It is the front view split three-dimensional structure schematic diagram of multistage grinding device for alumina powder processing provided by the utility model;

[0018] Figure 3The utility model provides a front view split stereogram structure schematic drawing of multistage grinding device for alumina powder processing is provided.

[0019] Figure 4 The utility model provides a feeding device stereogram structure schematic drawing of multistage grinding device for alumina powder processing is provided.

[0020] Figure 5 The utility model provides a grinding device one stereogram structure schematic drawing of multistage grinding device for alumina powder processing is provided.

[0021] Figure 6 The utility model provides a grinding device two stereogram structure schematic drawing of multistage grinding device for alumina powder processing is provided.

[0022] Figure 7 The utility model provides a collection box stereogram structure schematic drawing of multistage grinding device for alumina powder processing is provided.

[0023] Figure 8 The utility model provides a A place close -up of multistage grinding device for alumina powder processing is provided.

[0024] Legend:

[0025] 1, box body; 101, control terminal; 102, switch door one; 103, handle one; 104, switch door two; 105, handle two; 106, fixed plate; 107, movable groove; 108, T type movement groove; 109, installation shell; 2, blanking bin; 201, feed bin; 202, feed bin; 203, support leg; 204, support plate; 3, crushing device; 301, crushing motor; 302, rotating rod one; 303, crushing knife; 4, feeding device; 401, feeding motor; 402, rotating rod two; 403, auger piece; 5, grinding device one; 501, grinding motor; 502, installation rod one; 503, grinding roller one; 504, grinding block one; 505, installation rod two; 6, sieve plate; 601, sieve hole; 7, grinding device two; 701, positive and negative motor; 702, threaded rod; 703, moving block; 704, connecting rod one; 705, grinding roller two; 706, grinding block two; 707, connecting rod two; 708, sliding block; 709, sliding rod; 8, collection box; 801, handle; 802, T type slide plate. Specific implementation

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0027] Please refer to Figures 1-8 The utility model provides a technical scheme: multistage grinding device for alumina powder processing, include: box 1, the top of box 1 is installed and is unloaded storehouse 2, the top of unloaded storehouse 2 is installed and is transported storehouse 201, the one side of transported storehouse 201 top is installed and is feed bin 202, the one side of transported storehouse 201 bottom is installed and is two supporting legs 203, the bottom of two supporting legs 203 is installed and is support plate 204, support plate 204 fixed mounting is in the surface of box 1, the inner chamber of feed bin 202 is provided with two crushing devices 3, the inner chamber of transported storehouse 201 is provided with conveying device 4, the top of box 1 inner chamber is provided with two grinding device one 5, the inner chamber of box 1 is fixedly installed and is sieve plate 6, the surface of sieve plate 6 is opened and is provided with a plurality of sieve holes 601, the inner chamber of box 1 is provided with grinding device two 7, the bottom of box 1 inner chamber is movably installed and is collection box 8.

[0028] Specifically: two supporting legs 203 can support the installation of transported storehouse 201, the alumina raw material can enter transported storehouse 201 from feed bin 202 and then enter unloaded storehouse 2, and finally drop into the inside of box 1, the alumina to be ground is added to the inside of feed bin 202, and the two crushing devices 3 in the inside of feed bin 202 can preliminarily crush the alumina raw material, the preliminarily crushed alumina raw material can be conveyed to the right side through the conveying device 4 in the inside of transported storehouse 201, so that the alumina raw material drops into the inside of box 1 through unloaded storehouse 2, the two grinding device one 5 can grind and crush the preliminarily crushed alumina raw material, so that the crushed alumina drops onto the surface of sieve plate 6, at this time, the grinding device two 7 can repeatedly grind the alumina on the surface of sieve plate 6, so that the ground alumina powder drops downward through a plurality of sieve holes 601 into the inside of collection box 8, and after the collection box 8 is pulled out, the alumina powder can be collected.

[0029] In an embodiment, the surface of the box 1 is provided with a control terminal 101, the bottom of the surface of the box 1 is provided with a switch door one 102 through a hinge, the surface of the switch door one 102 is provided with a handle one 103, the surface of the box 1 is provided with a switch door two 104 through a hinge, the surface of the switch door two 104 is provided with a handle two 105, the inner cavity of the box 1 is fixedly provided with a fixed plate 106, the surface of the fixed plate 106 is provided with a movable groove 107, the bottom of the inner cavity of the box 1 is provided with two T-shaped moving grooves 108, and the inner wall of the box 1 is provided with a mounting shell 109.

[0030] Specifically, the control terminal 101 is electrically connected with each power supply controlled device, the handle one 103 is used to open the switch door one 102, the alumina powder spilled from the movable groove 107 is cleaned, the handle two 105 is used to open the switch door two 104, the alumina accumulated on the surface of the sieve plate 6 is cleaned, the movable groove 107 provided on the surface of the fixed plate 106 is used for the operation of the grinding device two 7, the two T-shaped moving grooves 108 are used to pull the collection box 8, and the mounting shell 109 is used to mount a sliding rod 709 to cooperate with the grinding device two 7 to grind.

[0031] In an embodiment, the crushing device 3 comprises a crushing motor 301, the crushing motor 301 is fixedly installed on one side of the feeding bin 202, the output end of the crushing motor 301 is fixedly provided with a rotating rod one 302, one end of the rotating rod one 302 is connected to the inner wall of the feeding bin 202 through a bearing, and the surface of the rotating rod one 302 is provided with a plurality of crushing knives 303.

[0032] Specifically, the crushing motor 301 is started through the control terminal 101, the crushing motor 301 operates to drive the rotating rod one 302 to rotate, at this time, the plurality of crushing knives 303 on the surface of the rotating rod one 302 can rotate to crush the alumina raw material, and the crushed alumina is conveniently transported into the inside of the feeding bin 201.

[0033] In an embodiment, the feeding device 4 comprises a feeding motor 401, the feeding motor 401 is fixedly embedded on one side of the feeding bin 201, the output end of the feeding motor 401 is fixedly provided with a rotating rod two 402, one end of the rotating rod two 402 is connected to the inner wall of the feeding bin 201 through a bearing, and the surface of the rotating rod two 402 is provided with a spiral blade 403.

[0034] Specifically, the control terminal 101 can start the feeding motor 401, and the feeding motor 401 drives the rotating rod 402 to rotate, so that the crushed aluminum oxide is pushed and conveyed by the auger blade 403, and the aluminum oxide is conveyed into the box 1. The inner wall of the feeding bin 201 is arc-shaped corresponding to the shape of the auger blade 403, so that the surface of the auger blade 403 is attached to the inner wall of the feeding bin 201. During the process of pushing and conveying the aluminum oxide by the auger blade 403, the aluminum oxide is not accumulated in the feeding bin 201, which facilitates better conveying of the aluminum oxide.

[0035] In one embodiment, the grinding device 5 comprises a grinding motor 501 fixedly embedded on one side of the box 1, and the output end of the grinding motor 501 is fixedly installed with a mounting rod 502, one end of the mounting rod 502 is installed with a grinding roller 503, the surface of the grinding roller 503 is installed with a plurality of grinding blocks 504, one side of the grinding roller 503 is installed with a mounting rod 505, and one side of the mounting rod 505 is connected to the inner wall of the box 1 through a bearing.

[0036] Specifically, the control terminal 101 can start the two grinding motors 501, the grinding motor 501 drives the mounting rod 502 to rotate, and the two mounting rods 502 drive the grinding roller 503 to rotate to the opposite side at the same time, so that the plurality of grinding blocks 504 on the surface of the grinding roller 503 extrude and grind the falling aluminum oxide, which can grind the aluminum oxide into powder, and the mounting rod 502 and the mounting rod 505 can facilitate the rotation of the grinding roller 503 in the box 1.

[0037] In one embodiment, the grinding device 2 comprises a forward and reverse motor 701 fixedly installed on one side of the inner wall of the box 1, the output end of the forward and reverse motor 701 is fixedly installed with a threaded rod 702, one end of the threaded rod 702 is connected to the other side of the inner wall of the box 1 through a bearing, the surface of the threaded rod 702 is movably sleeved with a moving block 703, one side of the moving block 703 is installed with a connecting rod 704, one end of the connecting rod 704 is installed with a grinding roller 705 through a bearing, the surface of the grinding roller 705 is installed with a plurality of grinding blocks 706, one side of the grinding roller 705 is installed with a connecting rod 707 through a bearing, one end of the connecting rod 707 is installed with a sliding block 708, the surface of the sliding block 708 is movably embedded with a sliding rod 709, both ends of the sliding rod 709 are fixedly installed on the inner wall of the mounting shell 109, and the moving block 703 moves in the active groove 107.

[0038] Specifically, the terminal 101 can start the reversible motor 701, and the reversible motor 701 can drive the threaded rod 702 to rotate in the forward direction or the reverse direction. At this time, the moving block 703 on the surface of the threaded rod 702 can move back and forth. Since the plurality of grinding blocks 706 on the surface of the grinding roller 705 are attached to the surface of the sieve plate 6, and the two sides of the grinding roller 705 are connected through bearings, when the moving block 703 moves, the grinding roller 705 can be driven to rotate, so that the grinding roller 705 moves back and forth to grind the aluminum oxide. The sliding block 708 moves on the surface of the sliding rod 709, and can limit the movement of the moving block 703.

[0039] In one embodiment, one side of the collection box 8 is fixedly provided with a handle 801, and the bottom end of the collection box 8 is provided with two T-shaped sliding plates 802, which are movably arranged in the two T-shaped moving grooves 108.

[0040] Specifically, the aluminum oxide powder in powder form is collected in the collection box 8. The handle 801 can be used to pull out the collection box 8. When the collection box 8 is pulled out, the two T-shaped sliding plates 802 are movably arranged in the two T-shaped moving grooves 108, so that the movement of the collection box 8 is more flexible.

[0041] Working principle: the broken motor 301, the material conveying motor 401, the grinding motor 501, the positive and negative motor 701 are electrically connected with the control terminal 101, when the alumina powder is processed and ground, the broken motor 301, the material conveying motor 401, the grinding motor 501 and the positive and negative motor 701 are started through the control terminal 101, the alumina raw material is added to the inside of the feeding bin 202, at this time, two broken motors 301 operate and drive two rotating rods one 302 to rotate inward at the same time, a plurality of broken knives 303 on the surface of the rotating rod one 302 can extrude and crush the input alumina raw material, the crushed alumina raw material can enter the inside of the material conveying bin 201, the material conveying motor 401 operates and drives the rotating rod two 402 to rotate, at this time, the auger blade 403 on the surface of the rotating rod two 402 can drive the alumina raw material in the material conveying bin 201 to push and convey to the right side, so that the alumina raw material is conveyed to the inside of the discharge bin 2, and falls into the inside of the box 1 through the discharge bin 2, the alumina raw material can be preliminarily crushed through the setting of the crushing device 3, so that the crushed alumina can be conveyed through the conveying device 4, the conveying speed of the alumina can be controlled through the conveying device 4, so that a large amount of alumina can be avoided to directly enter the inside of the device to cause blockage, the grinding effect of the alumina can be improved; at this time, two grinding motors 501 operate and drive two mounting rods one 502 to rotate inward at the same time, a plurality of grinding blocks one 504 on the surface of the grinding roller one 503 can extrude and grind the falling alumina raw material, so that the alumina raw material can be ground into powder, at this time, the ground alumina falls on the surface of the sieve plate 6, and the positive and negative motor 701 operates and drives the threaded rod 702 to rotate in the positive and negative directions, so that the moving block 703 drives the grinding blocks two 706 on the surface of the grinding roller two 705 to grind the alumina which is not in powder again, since a plurality of grinding blocks two 706 on the surface of the grinding roller two 705 are attached to the surface of the sieve plate 6, the grinding blocks two 706 can grind the alumina which is not in powder back and forth, and the grinding roller two 705 can drive the ground alumina to fall downward through a plurality of sieve holes 601, so that the alumina powder falls and is collected in the inside of the collecting box 8, the collecting box 8 can be pulled out through the handle 801, so that the ground alumina can be collected, the alumina is ground through the setting of the grinding device one 5, and is ground again through the grinding device two 7, so that the multi-stage grinding effect is achieved, and the grinding efficiency of the alumina can be improved.

[0042] The above is only a preferred embodiment of the present application, and does not limit the present application in other forms, any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments still belongs to the protection scope of the technical scheme of the present application.

Claims

1. A multi-stage grinding device for processing alumina powder, characterized by comprising: Include: The box (1), the top of the box (1) is installed with a discharging bin (2), the top of the discharging bin (2) is installed with a feeding bin (201), one side of the top of the feeding bin (201) is installed with a feeding bin (202), one side of the bottom end of the feeding bin (201) is installed with two supporting legs (203), the bottom end of the two supporting legs (203) is installed with a supporting plate (204), the supporting plate (204) is fixedly installed on the surface of the box (1), the inner cavity of the feeding bin (202) is provided with two crushing devices (3), the inner cavity of the feeding bin (201) is provided with a feeding device (4), the top of the inner cavity of the box (1) is provided with two grinding devices (5), the inner cavity of the box (1) is fixedly installed with a sieve plate (6), a plurality of sieve holes (601) are formed in the surface of the sieve plate (6), the inner cavity of the box (1) is provided with a grinding device (7), and the bottom of the inner cavity of the box (1) is movably installed with a collecting box (8).

2. The multi-stage grinding device for processing alumina powder according to claim 1, characterized by: The surface of the box (1) is installed with a control terminal (101), the bottom of one side of the surface of the box (1) is hingedly installed with a switch door (102), the surface of the switch door (102) is installed with a handle (103), the surface of the box (1) is hingedly installed with a switch door (104), one side of the surface of the switch door (104) is installed with a handle (105), the inner cavity of the box (1) is fixedly installed with a fixed plate (106), the surface of the fixed plate (106) is provided with a movable groove (107), the bottom of the inner cavity of the box (1) is provided with two T-shaped moving grooves (108), and the inner wall of the box (1) is installed with a mounting shell (109).

3. The multi-stage grinding device for processing alumina powder according to claim 1, characterized by: The crushing device (3) comprises a crushing motor (301), the crushing motor (301) is fixedly installed on one side of the feeding bin (202), the output end of the crushing motor (301) is fixedly installed with a rotating rod (302), one end of the rotating rod (302) is connected to one side of the inner wall of the feeding bin (202) through a bearing, and a plurality of crushing knives (303) are installed on the surface of the rotating rod (302).

4. The multi-stage grinding device for processing alumina powder according to claim 1, characterized by: The feeding device (4) comprises a feeding motor (401), the feeding motor (401) is fixedly embedded in one side of the feeding bin (201), the output end of the feeding motor (401) is fixedly installed with a rotating rod (402), one end of the rotating rod (402) is connected to one side of the inner wall of the feeding bin (201) through a bearing, and a plurality of auger blades (403) are woundly installed on the surface of the rotating rod (402).

5. The multi-stage grinding device for processing alumina powder according to claim 1, characterized by: The grinding device one (5) includes a grinding motor (501), the grinding motor (501) is fixedly embedded in one side of the box body (1), the output end of the grinding motor (501) is fixedly installed with a mounting rod one (502), one end of the mounting rod one (502) is installed with a grinding roller one (503), the surface of the grinding roller one (503) is installed with a plurality of grinding blocks one (504), one side of the grinding roller one (503) is installed with a mounting rod two (505), one side of the mounting rod two (505) is connected to the inner wall of the box body (1) through a bearing.

6. The multi-stage grinding device for processing of alumina powder according to claim 1, characterized in that: The grinding device two (7) includes a positive and negative motor (701), the positive and negative motor (701) is fixedly installed on one side of the inner wall of the box body (1), the output end of the positive and negative motor (701) is fixedly installed with a threaded rod (702), one end of the threaded rod (702) is connected to the other side of the inner wall of the box body (1) through a bearing, the surface of the threaded rod (702) is movably sleeved with a moving block (703), one side of the moving block (703) is installed with a connecting rod one (704), one end of the connecting rod one (704) is installed with a grinding roller two (705) through a bearing, the surface of the grinding roller two (705) is installed with a plurality of grinding blocks two (706), one side of the grinding roller two (705) is installed with a connecting rod two (707) through a bearing, one end of the connecting rod two (707) is installed with a sliding block (708), the surface of the sliding block (708) is movably embedded with a sliding rod (709), both ends of the sliding rod (709) are fixedly installed on the inner wall of the mounting shell (109), and the moving block (703) moves in the inside of the movable groove (107).

7. The multi-stage grinding device for processing of alumina powder according to claim 1, characterized in that: One side of the collecting box (8) is fixedly installed with a handle (801), and the bottom end of the collecting box (8) is installed with two T-shaped sliding plates (802), both the T-shaped sliding plates (802) move in the inside of two T-shaped moving grooves (108).

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