CN222986501U - Rock plate polisher - Google Patents

Abstract

The utility model provides a rock plate grinding machine, which relates to the technical field of rock plate processing equipment and comprises a positioning structure, a grinding device and a collecting box body, wherein the grinding device is arranged on two sides of the positioning structure, the collecting box body is arranged below the positioning structure and is communicated with the positioning structure, a collecting cavity, a transferring cavity and a processing cavity are formed in the collecting box body, the collecting cavity, the transferring cavity and the processing cavity are sequentially communicated, the collecting cavity is communicated with the positioning structure, a first inclined plate is arranged in the collecting cavity, a screw conveyor is arranged in the transferring cavity, the first inclined plate is abutted to the bottom end of the screw conveyor, a discharging pipe is arranged in the transferring cavity close to the top end of the screw conveyor, and the discharging pipe is communicated with the processing cavity.

Description

Rock plate polisher

Technical Field

The utility model relates to the technical field of rock plate processing equipment, in particular to a rock plate grinding machine.

Background

The rock plate is made of natural raw materials through a special process, is pressed by a press with the pressure of more than ten thousand tons (more than 15000 tons), is combined with an advanced production technology, is formed by firing at a high temperature of more than 1200 ℃, and can withstand the processing procedures of cutting, drilling, polishing and the like.

The prior Chinese patent with the bulletin number of CN213289671U discloses a rock plate grinding machine, which comprises a frame, a grinding head motor unit, a turnover table, a water baffle assembly and an air cylinder, wherein the frame comprises a carrier plate, an arch bridge and a fixing frame, the arch bridge and the fixing frame are arranged on the carrier plate, one end of the turnover table is movably connected with the fixing frame, the other end of the turnover table is hinged with the output end of the air cylinder, the fixed end of the air cylinder is arranged on the arch bridge, the grinding head motor unit is arranged on the upper end face of the turnover table, the water baffle assembly comprises a panel and a base, one end of the panel is movably abutted to the base, the other end of the panel is fixedly connected with the turnover table, the base is fixedly arranged on the carrier plate, a plurality of through holes are formed in the panel, and the output end of the grinding head motor unit penetrates through the through holes.

However, in the above technical scheme, a large amount of scraps and waste residues can be generated in the process of polishing the rock plate, and the scraps and waste residues cannot be collected timely and possibly fly away with wind to form dust pollution, so that the air quality is negatively influenced, the respiratory health of people is further influenced, and the resource of the repeated utilization of the rock plate is wasted.

Disclosure of utility model

Based on the problems, the utility model aims to solve the problems that a large amount of scraps and waste residues are generated in the rock plate polishing process, the air quality is negatively influenced, the respiratory health of people is further influenced, and the resources of the repeated utilization of the rock plate are wasted, and the utility model aims to provide a rock plate polishing machine which has the following specific technical scheme:

The rock plate grinding machine comprises a positioning structure, a grinding device and a collecting box body, wherein the grinding device is arranged on two sides of the positioning structure, the collecting box body is arranged below the positioning structure and is communicated with the positioning structure, a collecting cavity, a transferring cavity and a processing cavity are formed in the collecting box body, the collecting cavity, the transferring cavity and the processing cavity are sequentially communicated, the collecting cavity is communicated with the positioning structure, a first inclined plate is arranged in the collecting cavity, a screw conveyor is arranged in the transferring cavity, the first inclined plate is in butt joint with the bottom end of the screw conveyor, a discharging pipe is arranged on the top end, close to the screw conveyor, of the transferring cavity, and the discharging pipe is communicated with the processing cavity.

Further, the location structure includes support box body, backup pad and sucking disc, the backup pad with support box body fixed connection, the sucking disc is fixed to be set up in the backup pad, the bottom of support box body be provided with collect the slag notch that the cavity corresponds the setting, be provided with the second inclined plate in the support box body, the second inclined plate is kept away from the direction of slag notch is towards being close to the direction downward sloping setting of slag notch.

Further, an extension plate is fixedly connected above the support box body.

Further, a processing device and a collecting box are arranged in the processing cavity, the collecting box is arranged below the processing device, the processing device is fixedly connected with the inner wall of the processing cavity, and the collecting box is detachably connected with the inner wall of the processing cavity.

Further, processing apparatus includes vibrations structure, filtration and crushing structure, vibrations structure, filtration and crushing structure connect gradually, vibrations structure sets up the below of discharging pipe, vibrations structure, filtration and crushing structure respectively with the inner wall fixed connection of handling the cavity.

Further, the vibration structure comprises a limit buffer structure, a vibration frame and a vibration motor, one end of the limit buffer structure is fixedly connected with the inner wall of the processing cavity, the vibration frame is far away from the limit buffer structure, one end of the inner wall of the processing cavity is fixedly connected with the vibration frame, the vibration motor is close to one side of the limit buffer structure, one side of the vibration frame far away from the vibration motor is fixedly connected with the filtering structure.

Further, the limit buffer structure comprises a telescopic rod and an elastic piece, wherein the elastic piece is fixedly connected with one end of the telescopic rod, one end of the telescopic rod away from the elastic piece is fixedly connected with the inner wall of the treatment cavity, and one end of the elastic piece away from the telescopic rod is fixedly connected with the vibration frame.

Further, the filtering structure comprises a coarse metal net, a fine metal net and a retention rod, wherein the coarse metal net and the fine metal net are respectively connected with the vibration frame, the coarse metal net and the fine metal net are respectively arranged in a downward inclined mode in a direction away from the vibration frame, the coarse metal net is arranged above the fine metal net, two retention holes are formed in the retention rod, and one ends, away from the vibration frame, of the coarse metal net and the fine metal net are respectively abutted to one retention hole.

Further, smash the structure and include smashing motor, pivot and crushing subassembly, smashing the motor is fixed to be set up the outer wall of collecting box, the one end of pivot with smash the motor and be connected, the pivot is kept away from smash the one end of motor and run through the collecting box gets into in the processing cavity, be provided with two in the pivot crushing subassembly, one of them smash the subassembly with thick metal mesh is kept away from the one end butt of vibrations frame, another smash the subassembly with the thin metal mesh is kept away from the one end butt of vibrations frame.

Further, crushing subassembly includes crushing roller, crushing shell and connecting rod, crushing roller with pivot fixed connection, the one end of connecting rod with the retention pole is connected, the connecting rod keep away from the one end of retention pole with crushing shell is connected, crushing shell with crushing roller's position corresponds the setting.

Compared with the prior art, the rock plate polishing machine has the beneficial effects that the rock plate polishing machine can effectively fix the position when polishing is performed by arranging the positioning structure, can be matched with the collecting box body, can well collect scraps and waste residues generated in the polishing process, avoids the substances from being directly scattered into the environment and causing negative influence on the air quality, and can perform polishing treatment on the rock plate at the fixed position on the positioning structure by arranging the grinding device, so that the polishing stability is ensured, and the classification treatment on the scraps and the waste residues is realized by arranging the collecting cavity, the transferring cavity and the treatment cavity in the collecting box body, wherein the collecting cavity is used for primarily collecting the scraps and the waste residues, the transferring cavity is used for further treatment on the treatment cavity by utilizing the screw conveyor, so that the collection, the transferring and the treatment processes of the scraps and the waste residues are performed in a closed environment, the environmental pollution is reduced, the maintenance and the use of equipment are also facilitated, and the reutilizable part of the rock plate polishing machine can be subjected to the recovery and the recycling of the waste residues and the waste residues can be improved, and the production cost is reduced.

Drawings

The present utility model will be further understood from the following description taken in conjunction with the accompanying drawings, wherein elements are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the embodiments, and wherein like reference numerals designate corresponding parts in the different views.

FIG. 1 is a schematic view of a rock plate grinding machine according to an embodiment of the utility model;

FIG. 2 is a schematic diagram of a second embodiment of a panel sander;

FIG. 3 is a side cross-sectional view of a rock plate sander according to an embodiment of the present utility model;

Fig. 4 is a schematic structural view of a processing apparatus according to an embodiment of the present utility model.

Reference numerals illustrate:

1. Positioning structure, 11, supporting box body, 12, supporting plate, 13, sucking disc, 14, slag hole, 15, second inclined plate, 16, extension plate, 2, grinding device, 3, collecting box body, 31, collecting cavity, 311, first inclined plate, 32, transferring cavity, 321, screw conveyor, 322, discharging pipe, 33, processing cavity, 34, processing device, 341, vibration structure, 3411, limit buffer structure, 34111, telescopic rod, 34112, elastic piece, 3412, vibration frame, 3413, vibration motor, 342, filtering structure, 3421, coarse metal net, 3422, fine metal net, 3423, retention rod, 34231, retention hole, 343, grinding structure, 3431, grinding motor, 3432, rotating shaft, 3433, grinding assembly, 34331, grinding roller, 34332, grinding shell, 34333, connecting rod, 35 and collecting box.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to the following examples thereof, it being understood that the specific embodiments described herein are only for explaining the present utility model and do not limit the scope of the present utility model.

It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

The terms "first" and "second" in this specification do not denote a particular quantity or order, but rather are used for distinguishing between similar or identical items.

As shown in fig. 1 to 4, a rock plate grinding machine according to an embodiment of the present utility model includes a positioning structure 1, a grinding device 2, and a collecting box 3, wherein the grinding device 2 is disposed at two sides of the positioning structure 1; the collecting box body 3 is arranged below the positioning structure 1 and is communicated with the positioning structure 1, the collecting box body 3 is internally provided with a collecting cavity 31, a transferring cavity 32 and a processing cavity 33, the collecting cavity 31, the transferring cavity 32 and the processing cavity 33 are sequentially communicated, the collecting cavity 31 is communicated with the positioning structure 1, a first inclined plate 311 is arranged in the collecting cavity 31, a screw conveyer 321 is arranged in the transferring cavity 32, the first inclined plate 311 is abutted with the bottom end of the screw conveyer 321, the top end of the transferring cavity 32, which is close to the screw conveyer 321, is provided with a discharging pipe 322, the discharging pipe 322 is communicated with the processing cavity 33, by arranging the positioning structure 1, the effective fixing position can be realized when polishing is performed, and the collecting box body 3 can be matched, the waste scraps and waste residues generated in the polishing process can be well collected, the phenomenon that the substances are directly scattered into the environment is avoided, the negative influence is caused on the quality of air, a rock plate at a fixed position on a positioning structure 1 is polished by arranging a grinding device 2, the polishing stability is ensured, the waste scraps and the waste residues are classified by arranging a collecting cavity 31, a transferring cavity 32 and a processing cavity 33 in a collecting box body 3, wherein the collecting cavity 31 is used for primarily collecting the waste scraps and the waste residues, the transferring cavity 32 is used for conveying the waste scraps and the waste residues to the processing cavity 33 by using a screw conveyer 321 for further processing, so that the collecting, transferring and processing processes of the waste scraps and the waste residues are all carried out in a closed environment, and the environmental pollution is reduced, and the maintenance and the use of the equipment are also convenient.

The positioning structure 1 is characterized by comprising a supporting box body 11, a supporting plate 12 and a sucking disc 13, wherein the supporting plate 12 is fixedly connected with the supporting box body 11, the sucking disc 13 is fixedly arranged on the supporting plate 12, a rock plate is firmly fixed on the supporting plate 12 by the adsorption force of the sucking disc 13, a stable supporting platform is provided for the rock plate, the area and the strength of the supporting plate 12 are reasonably designed according to the size and the weight of the rock plate, the rock plate is ensured not to displace or incline in the polishing process, a slag outlet 14 which is arranged corresponding to a collecting cavity 31 is arranged at the bottom of the supporting box body 11, a second inclined plate 15 is arranged in the supporting box body 11, and the second inclined plate 15 is downwards inclined from the direction away from the slag outlet 14 to the direction close to the slag outlet 14, so that the waste slag can naturally slide from the inside the supporting box body 11 to the slag outlet 14 under the action of gravity, and smooth discharge of the waste slag is further ensured.

As a preferred embodiment of the utility model, the utility model can be provided with the following additional technical characteristics that the extension plate 16 is fixedly connected above the supporting box body 11, so that the supporting area above the supporting box body 11 is increased, the stability of the whole positioning structure 1 is enhanced, the harm to operators caused by splashes or waste residues generated in the polishing process is prevented, and the splashing range of the waste residues is reduced.

As a preferred embodiment of the present utility model, there may be further provided an additional technical feature that a treatment device 34 and an aggregate box 35 are provided in the treatment cavity 33, the aggregate box 35 is provided below the treatment device 34, the treatment device 34 is fixedly connected with the inner wall of the treatment cavity 33, the aggregate box 35 is detachably connected with the inner wall of the treatment cavity 33, the treatment device 34 is located in the treatment cavity 33, the waste slag conveyed from the transfer cavity 32 can be further treated, and the reusable part thereof can be recovered by effectively treating the waste slag.

As a preferred embodiment of the present utility model, it may further have the additional technical features that the treating apparatus 34 includes a shaking structure 341, a filtering structure 342 and a pulverizing structure 343, the shaking structure 341, the filtering structure 342 and the pulverizing structure 343 are sequentially connected, the shaking structure 341 is disposed under the discharge pipe 322, the shaking structure 341, the filtering structure 342 and the pulverizing structure 343 are fixedly connected with the inner wall of the treating cavity 33, respectively, the shaking structure 341 is disposed under the discharge pipe 322, when the waste residue enters the treating cavity 33 from the transferring cavity 32 through the discharge pipe 322, it is firstly contacted with the shaking structure 341, the shaking structure 341 helps the waste residue to flow and disperse by vibration, the filtering structure 342 is disposed under the shaking structure 341, its main function is to primarily screen and filter the waste residue, and the pulverizing structure 343 is disposed under the filtering structure 342, its main function is to pulverize the filtered waste residue.

As a preferred embodiment of the present utility model, the vibration structure 341 may further have the additional technical features that the vibration structure 341 includes a limit buffer structure 3411, a vibration frame 3412 and a vibration motor 3413, one end of the limit buffer structure 3411 is fixedly connected with the inner wall of the processing cavity 33, the vibration frame 3412 is fixedly connected with one end of the limit buffer structure 3411 far from the inner wall of the processing cavity 33, the vibration motor 3413 is fixedly connected with one side of the vibration frame 3412 near the limit buffer structure 3411, one side of the vibration frame 3412 far from the vibration motor 3413 is fixedly connected with the filtering structure 342, the vibration motor 3413 provides power for the vibration structure 341 to generate vibration, the vibration frame 3412 is a bracket for fixing the vibration motor 3413 and the filtering structure 342, and the limit buffer structure 3411 is used for controlling the amplitude and stability of vibration.

The limiting buffer structure 3411 is characterized by comprising a telescopic rod 34111 and an elastic piece 34112, wherein the elastic piece 34112 is fixedly connected with one end of the telescopic rod 34111, one end of the telescopic rod 34111, which is far away from the elastic piece 34112, is fixedly connected with the inner wall of the treatment cavity 33, one end of the elastic piece 34112, which is far away from the telescopic rod 34111, is fixedly connected with the vibration frame 3412, and by arranging the telescopic rod 34111 and the elastic piece 34112, the telescopic rod 34111 can limit the movement of the vibration frame 3412 when the vibration motor 3413 works to drive the vibration frame 3412 to vibrate, so that the condition that the vibration frame 3412 shakes up and down is avoided, and the stable movement of the vibration frame 3412 is ensured.

As a preferred embodiment of the present utility model, the filtering structure 342 may further have the additional technical features that the filtering structure 342 includes a coarse metal mesh 3421, a fine metal mesh 3422 and a retaining rod 3423, the coarse metal mesh 3421 and the fine metal mesh 3422 are respectively connected with the vibration frame 3412, the coarse metal mesh 3421 and the fine metal mesh 3422 are both disposed obliquely downward in a direction away from the vibration frame 3412, the coarse metal mesh 3421 is disposed above the fine metal mesh 3422, two retaining holes 34231 are formed in the retaining rod 3423, one end of the coarse metal mesh 3421 and the fine metal mesh 3422, which is far from the vibration frame 3412, is respectively abutted with one of the retaining holes 34231, the coarse metal mesh 3421 is mainly used for filtering out larger particles and impurities in the waste slag, and the fine metal mesh 3422 is capable of further filtering finer particles and powder, thereby ensuring the graded filtering of the rock wastes.

As a preferred embodiment of the present utility model, it may further have the additional technical feature that the pulverizing structure 343 includes a pulverizing motor 3431, a rotating shaft 3432 and a pulverizing assembly 3433, the pulverizing motor 3431 is fixedly disposed on the outer wall of the collecting box body 3, one end of the rotating shaft 3432 is connected with the pulverizing motor 3431, one end of the rotating shaft 3432 far from the pulverizing motor 3431 penetrates through the collecting box body 3 and enters the processing cavity 33, two pulverizing assemblies 3433 are disposed on the rotating shaft 3432, one pulverizing assembly 3433 is abutted with one end of the coarse metal mesh 3421 far from the vibration frame 3412, and the other pulverizing assembly 3433 is abutted with one end of the fine metal mesh 3422 far from the vibration frame 3412.

As a preferred embodiment of the present utility model, it may further have the additional technical feature that the pulverizing assembly 3433 includes a pulverizing roller 34331, a pulverizing casing 34332 and a connecting rod 34333, the pulverizing roller 34331 is fixedly connected with the rotating shaft 3432, one end of the connecting rod 34333 is connected with the retaining rod 3423, one end of the connecting rod 34333, which is remote from the retaining rod 3423, is connected with the pulverizing casing 34332, the pulverizing casing 34332 is disposed corresponding to the position of the pulverizing roller 34331, and by disposing the pulverizing roller 34331 and the pulverizing casing 34332, the pulverizing roller 34331 rotates under the driving of the rotating shaft 3432 to contact with the pulverizing casing 34332 to pulverize the waste material falling into the pulverizing casing 34332, thereby ensuring that the pulverizing process of the waste material can be smoothly performed.

The working principle of the rock plate grinding machine in this embodiment is that the waste materials ground by the rock plate fall into the collecting cavity 31 from the slag hole 14, the screw conveyor 321 is started to convey the grinding waste materials upward to the discharging pipe 322, at this time, the processing waste materials fall onto the coarse metal net 3421 through the vibrating frame 3412, meanwhile, the vibrating motor 3413 starts to work, so that the coarse metal net 3421 and the fine metal net 3422 vibrate, at this time, the grinding waste materials with large blocks directly fall into the grinding shell 34332, meanwhile, the grinding roller 34331 rotates to grind the waste materials, so that the ground waste materials continue to fall into the second grinding shell 34332 to grind, meanwhile, the small grinding waste materials fall onto the fine metal net 3422, so that the small grinding waste materials fall into the second grinding shell 34332 to grind, the ground waste materials fall into the aggregate box 35, the aggregate box 35 can be pulled out, and at this time, the collecting and processing process of the waste materials is completed.

The structural design of the rock plate polisher of this embodiment is reasonable, uses portably, to other equipment that have similar use requirement, also can adopt this kind of structure to realize equally, in this embodiment, this rock plate polisher is through collecting and handling rock plate sweeps and waste residue, can retrieve the part that can recycle wherein, has improved the utilization ratio of resource, has reduced manufacturing cost.

In the description of the above embodiments, greater than, less than, exceeding, etc. are understood to not include the present number, and the meaning of several, and more is more than one, and the description of above, below, within, etc. is understood to include the present number, and if the description is made to the first, second, etc. merely for the purpose of distinguishing technical features, it is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

The technical features of the above-described embodiments can be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradictory relation between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model, it being understood that variations and modifications can be made by those skilled in the art without departing from the spirit of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A rock board grinder, comprising:

a positioning structure;

The grinding devices are arranged on two sides of the positioning structure;

The collecting box body is arranged below the positioning structure and is communicated with the positioning structure, a collecting cavity, a transferring cavity and a processing cavity are formed in the collecting box body, the collecting cavity, the transferring cavity and the processing cavity are sequentially communicated, the collecting cavity is communicated with the positioning structure, a first inclined plate is arranged in the collecting cavity, a screw conveyor is arranged in the transferring cavity, the first inclined plate is in butt joint with the bottom end of the screw conveyor, the transferring cavity is close to the top end of the screw conveyor, and a discharging pipe is arranged at the top end of the screw conveyor and is communicated with the processing cavity.

2. The rock plate grinding machine of claim 1, wherein the positioning structure comprises a supporting box body, a supporting plate and a sucker, the supporting plate is fixedly connected with the supporting box body, the sucker is fixedly arranged on the supporting plate, a slag outlet which is arranged corresponding to the collecting cavity is arranged at the bottom of the supporting box body, a second inclined plate is arranged in the supporting box body, and the second inclined plate is arranged in a downward inclined manner from a direction away from the slag outlet to a direction close to the slag outlet.

3. The rock plate sander of claim 2, wherein an extension plate is fixedly connected to the upper portion of the support box.

4. The rock plate grinding machine of claim 1, wherein a processing device and a collecting box are arranged in the processing cavity, the collecting box is arranged below the processing device, the processing device is fixedly connected with the inner wall of the processing cavity, and the collecting box is detachably connected with the inner wall of the processing cavity.

5. The rock plate grinding machine of claim 4, wherein the processing device includes a vibrating structure, a filtering structure and a grinding structure, the vibrating structure, the filtering structure and the grinding structure are sequentially connected, the vibrating structure is arranged below the discharge pipe, and the vibrating structure, the filtering structure and the grinding structure are respectively fixedly connected with the inner wall of the processing cavity.

6. The rock plate sander of claim 5, wherein the vibration structure comprises a limit buffer structure, a vibration frame and a vibration motor, wherein one end of the limit buffer structure is fixedly connected with the inner wall of the treatment cavity, the vibration frame is fixedly connected with one end of the limit buffer structure, which is far away from the inner wall of the treatment cavity, the vibration motor is fixedly connected with one surface of the vibration frame, which is close to the limit buffer structure, and one surface of the vibration frame, which is far away from the vibration motor, is fixedly connected with the filter structure.

7. The rock plate sander of claim 6, wherein the limit buffer structure comprises a telescopic rod and an elastic member, the elastic member is fixedly connected with one end of the telescopic rod, one end of the telescopic rod away from the elastic member is fixedly connected with the inner wall of the treatment cavity, and one end of the elastic member away from the telescopic rod is fixedly connected with the vibration frame.

8. The rock plate sander of claim 6, wherein the filter structure includes a coarse metal mesh, a fine metal mesh, and a retaining rod, the coarse metal mesh and the fine metal mesh are respectively connected with the vibration frame, the coarse metal mesh and the fine metal mesh are both disposed obliquely downward in a direction away from the vibration frame, the coarse metal mesh is disposed above the fine metal mesh, two retaining holes are formed in the retaining rod, and one ends of the coarse metal mesh and the fine metal mesh away from the vibration frame are respectively abutted to one of the retaining holes.

9. The rock plate polisher according to claim 8, wherein the crushing structure comprises a crushing motor, a rotating shaft and a crushing assembly, the crushing motor is fixedly arranged on the outer wall of the collecting box, one end of the rotating shaft is connected with the crushing motor, one end of the rotating shaft, which is far away from the crushing motor, penetrates through the collecting box to enter the processing cavity, two crushing assemblies are arranged on the rotating shaft, one crushing assembly is abutted with one end, which is far away from the vibrating frame, of the coarse metal mesh, and the other crushing assembly is abutted with one end, which is far away from the vibrating frame, of the fine metal mesh.

10. The rock plate sander of claim 9, wherein the grinding assembly includes a grinding roller, a grinding shell, and a connecting rod, the grinding roller is fixedly connected with the rotating shaft, one end of the connecting rod is connected with the retention bar, one end of the connecting rod remote from the retention bar is connected with the grinding shell, and the grinding shell is disposed in correspondence with the position of the grinding roller.