CN115945246A - A vanadium-nitrogen alloy grinding machine for multi-stage grinding - Google Patents

Abstract

The invention discloses a vanadium-nitrogen alloy grinding machine for multi-stage grinding, in particular to the field of vanadium-nitrogen alloy grinding, comprising a grinding machine box, an equipment chamber and a grinding chamber arranged inside the grinding machine box, the top of the grinding machine box is provided with a feeding The middle part of one side of the grinding machine box is provided with an adding hopper, the top of the inner cavity of the grinding chamber is provided with two coarse crushing rollers, and the bottom of the coarse crushing roller is provided with two fine crushing rollers. The bottom of the roller is provided with a grinding and fixing seat. In the present invention, the vanadium-nitrogen alloy solid is first crushed by the set coarse crushing roller, further crushed by the fine crushing roller, then ground by the cooperation of the grinding fixed seat and the grinding stone, and filtered and sieved through the filter screen frame, and The vanadium-nitrogen alloy powder with larger particles is poured into the hopper for re-grinding, which can realize the function of multi-stage grinding, improve the quality of the final grinding product, and improve the use effect.

Description

A vanadium-nitrogen alloy grinding machine for multi-stage grinding

technical field

The invention relates to the technical field of vanadium-nitrogen alloy grinding, and more specifically, the invention relates to a multi-stage grinding vanadium-nitrogen alloy grinding machine.

Background technique

Vanadium-nitrogen alloy is a new alloy additive that can replace ferrovanadium for the production of microalloyed steel. The addition of vanadium nitride to steel can improve the comprehensive mechanical properties of steel such as strength, toughness, ductility and thermal fatigue resistance, and make the steel have good weldability. In the production process of vanadium nitrogen alloy, the raw materials need to be ground into powder , and then mixed with auxiliary materials and water to make a spherical billet, and then sintered, so a vanadium-nitrogen alloy grinding machine is needed in the production process of vanadium-nitrogen alloy.

The Chinese patent application number is CN202021050248.6, which discloses a grinding equipment for the production of vanadium-nitrogen alloys, including a grinding box and several grinding mechanisms arranged in the grinding box, and each grinding mechanism is arranged alternately from top to bottom; the grinding mechanism includes two A grinding roller rotatably connected to the grinding box. A number of crushing assemblies are evenly arranged on the peripheral surface of the grinding roller. The crushing assembly includes a mounting port opened on the peripheral surface of the grinding roller. On the rotating shaft parallel to the grinding roller, a pressing plate is connected to the rotating shaft through a torsion spring; the two grinding rollers in the grinding mechanism are connected with a gear that meshes with each other; the bottom of the grinding box is provided with an inclined filter screen, and the side of the grinding box A discharge opening connected to the lower end of the filter screen is provided on the wall. The utility model has the advantages of high efficiency and the like.

However, when this structure is actually used, it is inconvenient to control the particle size of the vanadium-nitrogen alloy powder, and it is inconvenient to sieve the vanadium-nitrogen alloy powder. It is easy to affect the later use due to the presence of larger vanadium-nitrogen alloy particles in the vanadium-nitrogen alloy powder. The question of effect.

Contents of the invention

The present invention provides a vanadium-nitrogen alloy grinding machine for multi-stage grinding, which can at least solve the problem in the above-mentioned background art that the effect of later use is easily affected by the existence of relatively large vanadium-nitrogen alloy particles in the vanadium-nitrogen alloy powder.

In order to achieve the above object, the present invention provides the following technical solutions: a vanadium-nitrogen alloy grinder for multi-stage grinding, comprising a grinder box and an equipment chamber and a grinding chamber arranged inside the grinder box, the top of the grinder box is provided with a feed The middle part of one side of the grinding machine box is provided with an adding hopper, the top of the inner cavity of the grinding chamber is provided with two coarse crushing rollers, and the bottom of the coarse crushing roller is provided with two fine crushing rollers. The bottom of the roller is provided with a grinding fixing seat, and the bottom of the grinding fixing seat is provided with a filter screen frame;

The middle part of the grinding fixed seat is provided with a grinding stone, the rear side of the filter screen frame is provided with a vibrating mechanism, the top of the grinding stone is provided with a fixed block, and the middle part of the fixed block is provided with a drive to rotate the grinding stone. a drive mechanism, a plurality of support rods are uniformly fixedly connected around the fixed block, fixed sliding bars are fixedly connected symmetrically to both sides of the filter screen frame, fixed slide rails are symmetrically arranged on both sides of the fixed sliding bar, A sealing plate is provided at the position corresponding to the filter screen frame on the front side of the grinder box.

Preferably, the bottom side of the grinder box is provided with a blanking plate, and the blanking plate, the feeding hopper, and the adding hopper are all connected with the inner cavity of the grinding chamber, and the adding hopper is arranged on the fine grinding roller and the fixed Between blocks, the side of the filter screen frame close to the sealing plate is fixedly connected with a handle, the fixed slide rail and the fixed slide bar are matched, the bottom wall of the inner cavity of the grinding chamber is set as a slope, and the fixed The lumps are set at the bottom of the fine grinding roller.

Preferably, the vibrating mechanism includes a first fixing plate, the first fixing plate is arranged on the side of the filter screen frame away from the sealing plate, an insertion hole is opened in the middle of the first fixing plate, and the fixing rod is close to the second One side of a fixed plate is fixedly connected with a plug-in plate at a position corresponding to the socket, the plug-in plate runs through the middle of the socket, and the side of the first fixed plate away from the filter screen frame is fixedly connected with a biaxial push rod, The output ends of the biaxial push rods respectively pass through the middle of the plugboard, and the two ends of the first fixed plate close to the biaxial push rods are symmetrically fixedly connected with fixed rods, and one end of the fixed rods extends to the bottom of the equipment cavity. A second fixed plate is fixedly connected inside, and a first electric push rod is arranged on one side of the second fixed plate, and the output end of the first electric push rod is fixedly connected with the middle wall of the second fixed plate.

Preferably, the driving mechanism includes a driving motor, the driving motor is arranged in the middle of the fixed block, the output end of the driving motor is fixedly connected with a rotating rod, and one end of the rotating rod is symmetrically opened with limiting chutes on both sides. A slot is opened on the top of the grinding stone, and one end of the rotating rod extends to the inside of the slot, and the opening of the inner cavity of the slot is fixedly connected with a first limiter at a position corresponding to the limiter chute. block, the first limiting block is set in the middle of the limiting chute, the top of the grinding stone is provided with a limiting groove, the cross-sectional shape of the limiting groove is set to an "L" shape, and the fixed block One side of the middle part is provided with a second electric push rod, the output end of the second electric push rod is fixedly connected with a support plate, one side of the support plate is fixedly connected with a second limit block, and the second limit block Set in the middle of the limiting groove, the second limiting block is adapted to the limiting groove, a plurality of rolling balls are arranged on both sides of the second limiting block, and the top of the grinding stone is fixedly connected with An annular plate, the diameter of the annular plate is adapted to the diameter of the fixed block, the cross-sectional shape of the inner cavity of the grinding and fixing seat is set to be tapered, and one end of the support rod is fixedly connected with the inner cavity wall of the grinding cavity, The top cross-sectional shape of the fixing block is set as an arc.

Technical effect and advantage of the present invention:

1. In the present invention, the vanadium-nitrogen alloy solid is first crushed by the set coarse crushing roller, further crushed by the fine crushing roller, and then ground by the cooperation of the grinding fixed seat and the grinding stone, and filtered and sieved through the filter screen frame , and pour the vanadium-nitrogen alloy powder with larger particles into the hopper for re-grinding, which can realize the function of multi-stage grinding, improve the quality of the final grinding product, and improve the use effect, and the vanadium-nitrogen alloy powder can be sieved by the vibration mechanism , and the particle size of the ground vanadium nitrogen alloy powder can be adjusted through the driving mechanism to improve the use effect;

2. The present invention can also make the filter screen frame shake during the screening process through the provided vibration mechanism, improve the screening effect of the filter screen frame, avoid the influence of the screening and filtration effect due to the accumulation of vanadium-nitrogen alloy, and fix The slide bar and the fixed slide rail can improve the stability of the filter screen frame, and insert the plug-in plate into the inside of the socket, and the first fixed plate can be easily split and connected with the filter screen frame through the set biaxial push rod. Improve the use effect;

3. The present invention can also control the rotation of the grinding stone to grind the vanadium-nitrogen alloy through the provided driving mechanism. At the same time, the size of the gap between the grinding stone and the grinding fixed seat can be controlled by starting the second electric push rod, thereby adjusting the grinding The vanadium-nitrogen alloy powder particle size improves the use effect, and through the set support plate and the inside of the limit groove, it can be conveniently adjusted and controlled by the second electric push rod to improve the use effect, and the set rolling ball can avoid the occurrence of Friction, improve the use effect;

To sum up, through the interaction of the above multiple effects, the effect of multi-stage grinding can be realized, the quality of the final grinding product can be improved, and the use effect can be improved.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic diagram of a partially enlarged structure at A in FIG. 1 of the present invention.

Fig. 3 is a top view sectional structural schematic diagram of the grinder box of the present invention.

Fig. 4 is a schematic cross-sectional structure diagram of the grinder box and the first fixing plate of the present invention.

Fig. 5 is a schematic cross-sectional structure diagram of the grinding stone of the present invention.

Fig. 6 is a schematic structural view of the filter frame of the present invention.

The reference signs are: 1. Grinding machine box; 2. Equipment cavity; 3. Grinding cavity; 4. Feeding hopper; 5. Adding hopper; 6. Coarse grinding roller; 7. Fine grinding roller; 8. Grinding fixed seat; , filter screen frame; 10, grinding stone; 11, fixed block; 12, support rod; 13, sealing plate; 14, blanking plate; 15, fixed slide rail; 16, handle; 17, fixed slide bar; 18, The first fixed plate; 19, the fixed rod; 20, the second fixed plate; 21, the first electric push rod; 22, the biaxial push rod; 23, the socket; Rod; 27, limit chute; 28, slot; 29, first limit block; 30, limit groove; 31, ring plate; 32, second electric push rod; 33, support plate; 34, second Limit block; 35, rolling ball.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

A kind of vanadium-nitrogen alloy grinder of multi-stage grinding as shown in accompanying drawing 1-6, comprises grinder box 1 and is arranged on the equipment chamber 2 and grinding chamber 3 inside grinder box 1, and the top of grinder box 1 is provided with feed Bucket 4, the middle part of one side of the grinding machine box 1 is provided with an adding hopper 5, the top of the inner cavity of the grinding chamber 3 is provided with two coarse crushing rollers 6, and the bottom of the coarse crushing roller 6 is provided with two fine crushing rollers 7, and the fine crushing rollers The bottom of 7 is provided with grinding fixed seat 8, and the bottom of grinding fixed seat 8 is provided with filter screen frame 9;

The middle part of the grinding fixed seat 8 is provided with a grinding stone 10; Drive mechanism, a plurality of support rods 12 are evenly fixedly connected around the fixed block 11, fixed sliding bars 17 are fixedly connected symmetrically to both sides of the filter screen frame 9, and fixed slide rails 15 are symmetrically arranged on both sides of the fixed sliding bar 17, and the grinding A sealing plate 13 is provided at a position corresponding to the filter screen frame 9 on the front side of the cabinet 1 .

As shown in accompanying drawings 1, 3, 4, and 6, the bottom side of the grinder box 1 is provided with a blanking plate 14, and the blanking plate 14, the feeding hopper 4, and the adding hopper 5 are all connected with the inner cavity of the grinding chamber 3 , the adding hopper 5 is arranged between the fine grinding roller 7 and the fixed block 11, the side of the filter screen frame 9 close to the sealing plate 13 is fixedly connected with a handle 16, the fixed slide rail 15 and the fixed slide bar 17 are matched, and the grinding chamber 3 The bottom wall body of the inner chamber is set as a slope, and the fixed block 11 is set on the bottom of the fine grinding roller 7, so that the vanadium-nitrogen alloy powder after grinding is filtered through the set filter screen frame 9, and the vanadium-nitrogen alloy powder with larger particles The alloy powder remains inside the filter screen frame 9, and the filter screen frame 9 can be removed by opening the sealing plate 13 and the vanadium nitrogen alloy powder with larger particles inside the filter screen frame 9 is poured into the middle of the grinding chamber 3 through the addition hopper 5 , through the grinding stone 10 and the grinding fixed seat 8 to carry out fine grinding again, improve the effect of grinding vanadium nitrogen alloy powder, and at the same time, through the cooperation of the fixed slide rail 15 and the fixed slide bar 17, the filter screen frame 9 can be limited and supported to improve Effect.

As shown in accompanying drawing 4 and 6, vibration mechanism comprises first fixed plate 18, and first fixed plate 18 is arranged on the side of filter screen frame 9 away from sealing plate 13, and the middle part of first fixed plate 18 is provided with socket 23, The side of the fixed rod 19 close to the first fixed plate 18 is fixedly connected with the inserting plate 24 at the position corresponding to the jack 23, the inserting plate 24 runs through the middle of the inserting hole 23, and the first fixing plate 18 is away from the side of the filter screen frame 9 A biaxial push rod 22 is fixedly connected, and the output ends of the biaxial push rod 22 run through the middle part of the insert plate 24 respectively. The two ends of the first fixed plate 18 close to the biaxial push rod 22 are fixedly connected with fixed rods 19 symmetrically. One end of the rod 19 extends to the inside of the equipment cavity 2 and is fixedly connected with a second fixed plate 20. One side of the second fixed plate 20 is provided with a first electric push rod 21, and the output end of the first electric push rod 21 is connected to the second The middle wall of the fixed plate 20 is fixedly connected so that the second fixed plate 20 can be moved repeatedly by starting the first electric push rod 21, and the first fixed plate 18 can be driven back and forth by the fixed rod 19, thereby driving the filter screen frame 9 back and forth Move to improve the screening and filtering effect, and extract the output end of the biaxial push rod 22 from the middle part of the insert plate 24, so that the filter screen frame 9 can be separated from the first fixed plate 18, and the filter screen frame 9 can be easily disassembled. Simultaneously, the output end of the biaxial push rod 22 runs through the middle part of the inserting plate 24, and the first fixed plate 18 and the filter screen frame 9 can be fixed to facilitate the filter screen frame 9 to vibrate, filter and sieve, and improve the use effect.

As shown in accompanying drawing 1,2,3,5, driving mechanism comprises driving motor 25, and driving motor 25 is arranged on the middle part of fixed block 11, and the output end of driving motor 25 is fixedly connected with rotating rod 26, and one end of rotating rod 26 two A limit chute 27 is provided symmetrically on the side, a slot 28 is provided on the top of the grinding stone 10, and one end of the rotating rod 26 extends to the inside of the slot 28, and the opening of the inner cavity of the slot 28 corresponds to the limit chute 27 The position is fixedly connected with the first stopper 29, the first stopper 29 is arranged in the middle part of the stopper chute 27, the top of the grinding stone 10 offers a stopper 30, and the cross-sectional shape of the stopper 30 is set to " L" shape, the middle side of the fixed block 11 is provided with a second electric push rod 32, the output end of the second electric push rod 32 is fixedly connected with a support plate 33, and one side of the support plate 33 is fixedly connected with a second limit block 34, the second limit block 34 is arranged in the middle of the limit groove 30, the second limit block 34 is adapted to the limit groove 30, and a plurality of rolling balls 35 are arranged on both sides of the second limit block 34, grinding The top of the stone 10 is fixedly connected with an annular plate 31, the diameter of the annular plate 31 is compatible with the diameter of the fixed block 11, the inner chamber section shape of the grinding fixture 8 is conical, and one end of the support rod 12 is connected to the grinding chamber 3 The inner cavity wall body of the fixed block 11 is fixedly connected, and the top section shape of the fixed block 11 is set to an arc shape, so that the rotating rod 26 is driven to rotate by starting the drive motor 25, and the cooperation of the first limit block 29 and the limit chute 27 can be used. Drive the grinding stone 10 to rotate, thereby grinding the vanadium-nitrogen alloy solid located in the middle of the grinding fixing seat 8 through the grinding stone 10 and the grinding fixing seat 8, improving the use effect and passing the second limit by starting the second electric push rod 32 The inside of the block 34 and the limiting groove 30 can be used to push the grinding stone 10, so as to facilitate the control of the gap between the grinding stone 10 and the grinding holder 8, and improve the use effect. At the same time, through the second limiting block 34 and The cooperation of the limit groove 30 can make the output end of the second electric push rod 32 disappear and be connected with the grinding stone 10 to improve the use effect;

It should be added that a control panel is provided on one side of the grinder box 1, and the control panel is electrically connected to the driving box of the coarse crushing roller 6 and the fine crushing roller 7, and is electrically connected to the driving motor 25 and the second electric push rod 32 at the same time, and The electric connection between the first electric push rod 21 and the biaxial push rod 22 facilitates the start-up of the control equipment for grinding.

The working principle of the present invention: when grinding the vanadium-nitrogen alloy solid, it is only necessary to pour the vanadium-nitrogen alloy solid into the middle of the grinding chamber 3 through the feed hopper 4, and the vanadium-nitrogen alloy solid will first fall between the two coarse crushing rollers 6 , crushed by the coarse crushing roller 6, then the crushed vanadium-nitrogen alloy solid will fall between two fine crushing rollers 7, and the vanadium-nitrogen alloy solid is further crushed by the fine crushing roller 7, so that the crushed vanadium-nitrogen alloy Solids can be guided by the fixed block 11 and fall on the middle part of the grinding and fixing seat 8;

Now start drive motor 25 to drive grinding stone 10 to rotate successively and can grind the vanadium-nitrogen alloy solid after pulverizing into powder by the cooperation of grinding stone 10 and grinding holder 8, and then the vanadium-nitrogen alloy powder after grinding will be Fall on the middle part of filter screen frame 9 to sieve;

Now start the first electric push rod 21 to drive the second fixed plate 20 to move repeatedly, which can drive the filter screen frame 9 to move repeatedly, and the vanadium-nitrogen alloy powder in the filter screen frame 9 middle part is screened, and the finer vanadium-nitrogen alloy powder It falls on the bottom of the inner chamber of the grinding chamber 3 and is discharged through the blanking plate 14 to complete the grinding of the vanadium nitrogen alloy powder;

The bigger vanadium nitrogen alloy powder of particle can stay in the middle part of filter screen frame 9, when the product of filter screen frame 9 middle part is more, only need start the output end of biaxial push rod 22 control biaxial push rod 22 from inserting plate 24 Remove the middle part, then open the sealing plate 13 and pull the handle 16 to remove the filter screen frame 9 from the middle part of the grinding chamber 3;

Then the vanadium-nitrogen alloy powder inside the filter screen frame 9 is poured into the middle part of the grinding chamber 3 through the adding hopper 5, and falls on the middle part of the grinding fixed seat 8 again, and the second electric push rod 32 is started to push the grinding stones 10 in sequence, Narrow the gap between the grinding stone 10 and the grinding holder 8, and grind, then reset the filter screen frame 9, and start the biaxial push rod 22 to fix the insert plate 24, so that the first fixed plate 18 and the filter screen Frame 9 is fixedly connected, which can realize the function of multi-stage grinding and repeated precise grinding, improve the quality of ground vanadium-nitrogen alloy powder, and improve the use effect.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (9)

1. a vanadium-nitrogen alloy grinder for multistage grinding, comprising a grinder case (1) and an equipment cavity (2) and a grinder chamber (3) that are arranged on the inside of the grinder case (1), it is characterized in that: the grinder case The top of (1) is provided with a feed hopper (4), the middle part of one side of the grinder box (1) is provided with an adding hopper (5), and the top of the inner cavity of the grinding chamber (3) is provided with two coarse crushing Roller (6), the bottom of described coarse crushing roller (6) is provided with two fine crushing rollers (7), and the bottom of described fine crushing roller (7) is provided with grinding fixed seat (8), and described grinding fixed seat The bottom of (8) is provided with filter screen frame (9); The middle part of the grinding fixed seat (8) is provided with a grinding stone (10), the rear side of the filter screen frame (9) is provided with a vibration mechanism, and the top of the grinding stone (10) is provided with a fixed block ( 11), the middle part of the fixed block (11) is provided with a driving mechanism for driving the grinding stone (10) to rotate, and a plurality of support rods (12) are uniformly fixedly connected around the fixed block (11); Both sides of the filter screen frame (9) are symmetrically fixedly connected with fixed slide bars (17), and both sides of the fixed slide bar (17) are symmetrically provided with fixed slide rails (15), and the grinder box (1) A sealing plate (13) is provided at the position corresponding to the filter screen frame (9) on the front side of the filter. 2. the vanadium-nitrogen alloy grinding machine of a kind of multistage grinding according to claim 1, is characterized in that: the bottom side of described grinding machine case (1) is provided with blanking plate (14), and described blanking plate (14) and feeding hopper (4), adding hopper (5) are all communicated with the inner cavity of grinding chamber (3), and described adding hopper (5) is arranged on fine crushing roller (7) and fixed block (11) between. 3. the vanadium-nitrogen alloy grinder of a kind of multistage grinding according to claim 1, is characterized in that: described filter screen frame (9) is fixedly connected with handle (16) near the side of sealing plate (13), The fixed slide rail (15) is compatible with the fixed slide bar (17), the bottom wall of the inner chamber of the grinding chamber (3) is set as an inclined plane, and the fixed block (11) is arranged on the fine grinding roller (7 )bottom of. 4. The vanadium nitrogen alloy grinder of a kind of multistage grinding according to claim 1, is characterized in that: described vibrating mechanism comprises first fixed plate (18), and described first fixed plate (18) is arranged on filter The screen frame (9) is away from the side of the sealing plate (13), the middle part of the first fixing plate (18) is provided with an insertion hole (23), and the fixing rod (19) is close to the side of the first fixing plate (18). A plugboard (24) is fixedly connected to a position corresponding to the jack (23) on one side. 5. The vanadium-nitrogen alloy grinding machine for multi-stage grinding according to claim 4, characterized in that: the inserting plate (24) runs through the middle of the insertion hole (23), and the first fixing plate (18) A side away from the filter screen frame (9) is fixedly connected with a biaxial push rod (22), and the output ends of the biaxial push rod (22) respectively pass through the middle of the inserting plate (24). 6. A vanadium-nitrogen alloy grinding machine for multi-stage grinding according to claim 4, characterized in that: the first fixed plate (18) is symmetrically fixedly connected at both ends of one side close to the biaxial push rod (22) There is a fixed rod (19), one end of the fixed rod (19) extends to the inside of the equipment cavity (2) and is fixedly connected with a second fixed plate (20), and one side of the second fixed plate (20) is provided There is a first electric push rod (21), and the output end of the first electric push rod (21) is fixedly connected with the middle wall of the second fixing plate (20). 7. The vanadium nitrogen alloy grinder of a kind of multistage grinding according to claim 1, is characterized in that: described drive mechanism comprises drive motor (25), and described drive motor (25) is arranged on fixed block (11) The middle part of the drive motor (25) is fixedly connected with a rotating rod (26), and one end of the rotating rod (26) is symmetrically provided with a limit chute (27), and the grinding stone (10 ) is provided with a slot (28), one end of the rotating rod (26) extends to the inside of the slot (28), and the opening of the inner cavity of the slot (28) is connected to the limit chute (27) The corresponding position is fixedly connected with a first limiting block (29), and the first limiting block (29) is arranged in the middle of the limiting chute (27). 8. The vanadium-nitrogen alloy grinding machine of a kind of multistage grinding according to claim 1, characterized in that: the top of the grinding stone (10) is provided with a limiting groove (30), and the limiting groove (30) ) is set to an "L" shape, the middle side of the fixed block (11) is provided with a second electric push rod (32), and the output end of the second electric push rod (32) is fixedly connected with a support plate (33), one side of the support plate (33) is fixedly connected with a second limiting block (34), and the second limiting block (34) is arranged in the middle part of the limiting groove (30). The second limiting block (34) is adapted to the limiting groove (30), and a plurality of rolling balls (35) are arranged on both sides of the second limiting block (34). 9. The vanadium-nitrogen alloy grinder of a kind of multistage grinding according to claim 1, is characterized in that: the top of described grinding stone (10) is fixedly connected with annular plate (31), and described annular plate (31 ) is adapted to the diameter of the fixed block (11), the inner cavity section shape of the grinding fixed seat (8) is set to be conical, and one end of the support rod (12) is connected to the inner cavity of the grinding chamber (3) The cavity walls are fixedly connected, and the top cross-sectional shape of the fixed block (11) is set as an arc.

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