Traditional Chinese medicine grinding device for traditional Chinese medicine digestive department
By designing grinding components, anti-clogging components, and cleaning components for a traditional Chinese medicine grinding device, the problems of uneven grinding and adhesion of traditional Chinese medicine were solved, achieving uniformity of medicinal material particles and efficient collection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINGGUO COUNTY TRADITIONAL CHINESE MEDICINE HOSPITAL
- Filing Date
- 2025-04-01
- Publication Date
- 2026-04-14
AI Technical Summary
Existing methods for grinding Chinese medicine are laborious, produce uneven particles, and the ground herbs tend to stick to the inner wall of containers, which can lead to waste if not collected in time.
A traditional Chinese medicine grinding device for gastroenterology was designed, comprising a grinding component, an anti-clogging component, and a cleaning component. The distance between the grinding stone and the grinding disc is adjusted by a crank-driven gear system, and a brush is used to clean the inner wall of the grinding disc to prevent the powder from clogging the fine pores.
This process achieves uniform grinding of medicinal materials, prevents powder from sticking and clogging, and improves grinding efficiency and collection effect.
Smart Images

Figure CN224114076U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of traditional Chinese medicine grinding technology, and in particular relates to a traditional Chinese medicine grinding device for use in the gastroenterology department of traditional Chinese medicine. Background Technology
[0002] Traditional Chinese medicine mainly includes plant-based medicines, animal-based medicines, and mineral-based medicines. There are various ways to classify traditional Chinese medicines, such as according to their functions, medicinal parts, active ingredients, natural properties, and kinship.
[0003] The problems with the above technology are: most of the existing methods of grinding Chinese medicine are pounding and grinding, which is quite laborious. The resulting medicinal particles are not uniform, and the ground medicinal materials will stick to the inner wall of the container. If they are not collected in time, they may be wasted. Utility Model Content
[0004] In view of the problems existing in the prior art, this utility model provides a Chinese medicine grinding device for the gastroenterology department that can overcome or at least partially solve the above problems.
[0005] This utility model is implemented as follows: a traditional Chinese medicine grinding device for gastroenterology includes a grinding box, a support fixedly fitted on the surface of the grinding box, a feeding port fixedly connected to the top of the grinding box, a protective shell provided on one side of the feeding port, the bottom of the protective shell fixedly connected to the grinding box, a grinding component and a cleaning component provided inside the grinding box, a grinding disc fixedly connected to the inner wall of the grinding box, several fine holes opened on the bottom side of the inner wall of the grinding disc, an anti-clogging component provided on one side of the grinding box, a baffle hinged to the surface of the grinding box, a funnel fixedly connected to the bottom of the grinding box, and a handle fixedly connected to the surface of the baffle.
[0006] To ensure uniform grinding of the medicinal materials, preferably, the grinding assembly includes a crank handle, a first gear, a second gear, a connecting column, an adjusting member, and a first connecting rod. One end of the crank handle passes through the protective shell and the top of the first gear, and is rotatably connected to the top of the grinding box via a bearing. The first gear and the second gear mesh. The bottom of the second gear is fixedly connected to one end of the connecting column. The adjusting member is movably sleeved on the surface of the connecting column. The bottom of the adjusting member is fixedly connected to the first connecting rod. The bottom of the first connecting rod is fixedly connected to a grinding stone. By turning the crank handle, the crank handle drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the connecting column to rotate, the connecting column causes the adjusting member to rotate via a first sliding rod, and the adjusting member causes the grinding stone to rotate around the connecting column as the center via the first connecting rod.
[0007] To secure the adjusting components and adjusting blocks after adjustment, preferably, one end of the connecting column penetrates the top wall of the inner cavity of the grinding box and extends into the inner cavity of the protective shell. The first gear and the second gear are located inside the protective shell. The bottom of the connecting column is rotatably connected to the grinding disc via a rotating shaft. The surface of the connecting column is provided with a circular adjusting hole and a triangular adjusting hole. The protective shell is used to prevent the operator's hands from being injured by the first gear and the second gear. The circular adjusting hole and the triangular adjusting hole, together with the triangular fixing block of the first slide rod, are used to fix the adjusting components and adjusting blocks.
[0008] To allow adjustment of the distance between the abrasive stone and the grinding disc, preferably, a first sliding rod is slidably connected to the inner wall of the connecting column. Limiting blocks are provided at both ends of the first sliding rod. The inner wall of the front limiting block is threadedly connected to the surface of the first sliding rod, and the rear limiting block is fixedly connected to the first sliding rod. The adjusting component has holes that cooperate with the first sliding rod. The distance between the abrasive stone and the grinding disc is adjusted by the adjusting component. After rotating and removing the front limiting block from one end of the first sliding rod, the first sliding rod is moved out of the inner wall of the connecting column. At this point, the adjusting component is moved to a suitable position, and the first sliding rod is fixed by passing it through the holes on the surface of the adjusting component and the circular adjusting holes on the surface of the connecting column. Finally, the front limiting block is threadedly connected and fixed to the first sliding rod.
[0009] To collect residual medicinal powder on the inner wall of the grinding disc in a timely manner, the cleaning assembly preferably includes a triangular fixing block, a retaining ring, a first spring, a second sliding rod, and a fixing plate. The triangular fixing block is adapted to the triangular adjustment hole. One side of the triangular fixing block is fixedly connected to the retaining ring, and one side of the retaining ring is fixedly connected to the first spring and the second sliding rod. The first spring is sleeved on the surface of the second sliding rod, and the other end of the first spring is fixedly connected to the fixing plate. The other end of the second sliding rod passes through one side of the fixing plate and extends outward. When grinding medicinal materials, the brush is above the grinding disc and will not obstruct the grinding of medicinal materials. After grinding is completed, by pulling the second sliding rod away from the connecting rod, the second sliding rod compresses the first spring through the retaining ring, causing the triangular fixing block to disengage from the triangular adjustment hole and releasing the restriction on the adjustment block.
[0010] To promptly collect residual powder from the inner wall of the grinding disc, the cleaning assembly preferably includes an adjusting block, a pad, a second connecting rod, and a brush. The inner wall of the adjusting block is slidably connected to the connecting column, one side of the adjusting block is fixedly connected to the pad, the top of the pad is fixedly connected to the fixing plate, one side of the adjusting block is fixedly connected to the second connecting rod, and the bottom of the second connecting rod is fixedly connected to the brush. When the triangular fixing block disengages from the triangular adjusting hole, the adjusting block is moved downwards until the brush contacts the grinding disc. At this point, the second sliding rod is released, and the first spring resets, connecting the triangular fixing block and the triangular adjusting hole to fix the adjusting block. Then, the connecting column is rotated, and the brush rotates along the inner wall of the grinding disc, sweeping down the residual powder and collecting it through the fine holes at the bottom of the grinding disc.
[0011] To prevent the powder from clogging the pores, preferably, the anti-clogging component includes an L-shaped plate, a second spring, a second fixing block, a striking rod, and a connecting plate. The L-shaped plate is rotatably connected to the inner wall of the grinding chamber via a rotating shaft. One end of the L-shaped plate extends into the inner cavity of the grinding chamber. The second spring and the striking rod are fixedly connected to one side of the L-shaped plate, and the other end of the second spring is fixedly connected to the second fixing block. When the adjusting member rotates one revolution and contacts the L-shaped plate, it will push one end of the L-shaped plate in the direction of the adjusting member's rotation. At this time, the other end of the L-shaped plate, along with the striking rod, moves in the opposite direction, stretching the second spring as it moves.
[0012] To prevent the powder from clogging the pores, preferably, one side of the second fixing block is fixedly connected to the grinding box, one end of the connecting plate penetrates the surface of the grinding box and is fixedly connected to the grinding disc, and one end of the impact rod contacts the connecting plate. When the adjusting block leaves the L-shaped plate, the second spring returns to its original position, and the impact rod strikes the connecting plate. The vibration of the connecting plate transmits the vibration force to the grinding disc, preventing the powder from clogging the pores.
[0013] This invention solves the problems of existing Chinese medicine grinding methods, which mostly involve pounding and grinding, resulting in uneven particle size and the herb sticking to the container wall, potentially leading to waste if not collected in time. These methods are characterized by the grinding component, anti-clogging component, and cleaning component. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of a traditional Chinese medicine grinding device for gastroenterology provided by an embodiment of the present invention;
[0015] Figure 2 This is a three-dimensional structural diagram of the grinding assembly provided in an embodiment of the present utility model;
[0016] Figure 3This is provided by the embodiment of the present utility model. Figure 2 Enlarged view of point A in the middle;
[0017] Figure 4 This is a three-dimensional structural diagram of the anti-blocking component provided in an embodiment of the present invention.
[0018] In the diagram: 1. Grinding box; 2. Support; 3. Funnel; 4. Feed port; 5. Protective shell; 6. Grinding assembly; 601. Handle; 602. First gear; 603. Second gear; 604. Connecting column; 605. Adjusting component; 606. First connecting rod; 7. Anti-clogging assembly; 701. L-shaped plate; 702. Second spring; 703. Second fixing block; 704. Impact rod; 705. Connecting plate; 8. Cleaning assembly; 801. Triangular fixing block; 802. Retaining ring; 803. First spring; 804. Second sliding rod; 807. Fixing plate; 806. Adjusting block; 805. Pad; 808. Second connecting rod; 809. Brush; 9. Grinding disc; 10. Grinding stone; 11. Handle; 12. Baffle; 13. Limiting block; 14. First sliding rod. Detailed Implementation
[0019] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.
[0020] The structure of this utility model will now be described in detail with reference to the accompanying drawings.
[0021] like Figures 1 to 4 As shown in the figure, the present invention provides a traditional Chinese medicine grinding device for gastroenterology, including a grinding box 1, a support 2 fixedly sleeved on the surface of the grinding box 1, a feeding port 4 fixedly connected to the top of the grinding box 1, a protective shell 5 provided on one side of the feeding port 4, the bottom of the protective shell 5 fixedly connected to the grinding box 1, a grinding component 6 and a cleaning component 8 provided inside the grinding box 1, a grinding disc 9 fixedly connected to the inner wall of the grinding box 1, several fine holes opened on the bottom side of the inner wall of the grinding disc 9, an anti-clogging component 7 provided on one side of the grinding box 1, a baffle 12 hinged to the surface of the grinding box 1, a funnel 3 fixedly connected to the bottom of the grinding box 1, and a handle 11 fixedly connected to the surface of the baffle 12.
[0022] To ensure uniform grinding of the medicinal materials, the grinding assembly 6 includes a crank handle 601, a first gear 602, a second gear 603, a connecting post 604, an adjusting member 605, and a first connecting rod 606. One end of the crank handle 601 passes through the protective housing 5 and the top of the first gear 602, and is rotatably connected to the top of the grinding box 1 via a bearing. The first gear 602 and the second gear 603 mesh. The bottom of the second gear 603 is fixedly connected to one end of the connecting post 604. The adjusting member 605 is movably sleeved on the surface of the connecting post 604. The bottom of the adjusting component 605 is fixedly connected to a first connecting rod 606, and the bottom of the first connecting rod 606 is fixedly connected to a grinding stone 10. By turning the crank 601, the crank 601 drives the first gear 602 to rotate, the first gear 602 drives the second gear 603 to rotate, the second gear 603 drives the connecting column 604 to rotate, and the connecting column 604 causes the adjusting component 605 to rotate through the first slide rod 14. The adjusting component 605 causes the grinding stone 10 and the connecting column 604 to rotate in a circular motion through the first connecting rod 606.
[0023] To fix the adjusting component 605 and the adjusting block 806 after adjustment, one end of the connecting column 604 penetrates the top wall of the inner cavity of the grinding box 1 and extends into the inner cavity of the protective shell 5. The first gear 602 and the second gear 603 are located inside the protective shell 5. The bottom of the connecting column 604 is rotatably connected to the grinding disc 9 through a rotating shaft. The surface of the connecting column 604 is provided with a circular adjusting hole and a triangular adjusting hole. The protective shell 5 is used to prevent the operator's hands from being injured by the first gear 602 and the second gear 603. The circular adjusting hole and the triangular adjusting hole cooperate with the triangular fixing block 801 of the first slide rod 14 to fix the adjusting component 605 and the adjusting block 806.
[0024] To adjust the distance between the abrasive stone 10 and the grinding disc 9, a first sliding rod 14 is slidably connected to the inner wall of the connecting column 604. Limiting blocks 13 are provided at both ends of the first sliding rod 14. The inner wall of the front limiting block 13 is threadedly connected to the surface of the first sliding rod 14, and the rear limiting block 13 is fixedly connected to the first sliding rod 14. The adjusting member 605 is provided with a hole that cooperates with the first sliding rod 14. The distance between the abrasive stone 10 and the grinding disc 9 is adjusted by the adjusting member 605. After rotating the front limiting block 13 off one end of the first sliding rod 14, the first sliding rod 14 is moved out of the inner wall of the connecting column 604. At this time, the adjusting member 605 is moved to a suitable position, and the first sliding rod 14 is fixed by the hole on the surface of the adjusting member 605 and the circular adjusting hole on the surface of the connecting column 604. Then, the front limiting block 13 is threadedly connected to the first sliding rod 14 and fixed.
[0025] To collect residual medicinal powder on the inner wall of the grinding disc 9 in a timely manner, the cleaning assembly 8 includes a triangular fixing block 801, a retaining ring 802, a first spring 803, a second sliding rod 804, and a fixing plate 807. The triangular fixing block 801 is adapted to the triangular adjustment hole. One side of the triangular fixing block 801 is fixedly connected to the retaining ring 802. One side of the retaining ring 802 is fixedly connected to the first spring 803 and the second sliding rod. The first spring 803 is sleeved on the surface of the second sliding rod 804. The other end of the first spring 803 is fixedly connected to the fixing plate 807. The other end of the second sliding rod 804 passes through one side of the fixing plate 807 and extends outward. When grinding medicinal materials, the brush 809 is above the grinding disc 9 and will not obstruct the grinding of medicinal materials. After grinding is completed, by pulling the second sliding rod 804 away from the connecting post 604, the second sliding rod 804 compresses the first spring 803 through the retaining ring 802, causing the triangular fixing block 801 to disengage from the triangular adjustment hole and releasing the restriction on the adjustment block 806.
[0026] To collect residual powder on the inner wall of the grinding disc 9 in a timely manner, the cleaning assembly 8 also includes an adjusting block 806, a pad 805, a second connecting rod 808, and a brush 809. The inner wall of the adjusting block 806 is slidably connected to the connecting post 604. One side of the adjusting block 806 is fixedly connected to the pad 805. The top of the pad 805 is fixedly connected to the fixing plate 807. One side of the adjusting block 806 is fixedly connected to the second connecting rod 808. The bottom of the second connecting rod 808 is fixedly connected to the brush 809. When the triangular fixing block 801 disengages from the triangular adjusting hole, the adjusting block 806 is moved downward until the brush 809 contacts the grinding disc 9. At this time, the second sliding rod 804 is released, and the first spring 803 resets to connect the triangular fixing block 801 and the triangular adjusting hole, thus fixing the adjusting block 806. At this time, the connecting post 604 is rotated, and the brush 809 rotates along the inner wall of the grinding disc 9, sweeping down the residual powder and collecting it through the fine hole at the bottom of the grinding disc 9.
[0027] To prevent the powder from clogging the pores, the anti-clogging component 7 includes an L-shaped plate 701, a second spring 702, a second fixing block 703, a striking rod 704, and a connecting plate 705. The L-shaped plate 701 is rotatably connected to the inner wall of the grinding box 1 via a rotating shaft. One end of the L-shaped plate 701 extends into the inner cavity of the grinding box 1. The second spring 702 and the striking rod 704 are fixedly connected to one side of the L-shaped plate 701. The other end of the second spring 702 is fixedly connected to the second fixing block 703. When the adjusting member 605 rotates one revolution and contacts the L-shaped plate 701, it will push one end of the L-shaped plate 701 in the direction of rotation of the adjusting member 605. At this time, the other end of the L-shaped plate 701 moves in the opposite direction with the striking rod 704. While moving, the second spring 702 is stretched.
[0028] To prevent the powder from clogging the pores, one side of the second fixing block 703 is fixedly connected to the grinding box 1, one end of the connecting plate 705 penetrates the surface of the grinding box 1 and is fixedly connected to the grinding disc 9, and one end of the impact rod 704 contacts the connecting plate 705. When the adjusting block 806 leaves the L-shaped plate 701, the second spring 702 returns to its original position, and the impact rod 704 will strike the connecting plate 705. The vibration of the connecting plate 705 will transmit the vibration force to the grinding disc 9 to prevent the powder from clogging the pores.
[0029] In use, first place the powder container at the bottom of the funnel 3, then add the Chinese medicine into the grinding box 1 through the feed inlet. Open the baffle 12 with the handle 11 to adjust the internal adjusting block 806 appropriately. After rotating the front limiting block 13 off one end of the first sliding rod 14, move the first sliding rod 14 out of the inner wall of the connecting column 604. At this time, move the adjusting component 605 to the appropriate position, and fix the adjusting component 605 through the hole on the surface of the adjusting component 605 and the circular adjusting hole on the surface of the connecting column 604. Then, connect the front limiting block 13 and the first sliding rod 14. The threaded connection is fixed, and then the crank handle 601 is turned. The crank handle 601 drives the first gear 602 to rotate, the first gear 602 drives the second gear 603 to rotate, and the second gear 603 drives the connecting post 604 to rotate. The connecting post 604 causes the adjusting member 605 to rotate via the first slide rod 14. The adjusting member 605 causes the abrasive stone 10 to rotate around the connecting post 604 as the center to grind the medicinal materials via the first connecting rod 606. When grinding the medicinal materials, the brush 809 is above the grinding disc 9 and will not obstruct the grinding of the medicinal materials. After grinding is completed, the brush 809 moves away from the connecting post 604. Pulling the second slide bar 804 from one side compresses the first spring 803 via the retaining ring 802, causing the triangular fixing block 801 to disengage from the triangular adjustment hole, thus releasing the restriction on the adjusting block 806. Once the triangular fixing block 801 is disengaged from the triangular adjustment hole, the adjusting block 806 is moved downwards until the brush 809 contacts the grinding disc 9. At this point, the second slide bar 804 is released, and the first spring 803 resets, connecting the triangular fixing block 801 to the triangular adjustment hole, thus fixing the adjusting block 806. Rotating the connecting column 604 then causes the brush 809 to rotate along the inner wall of the grinding disc 9. The residual powder is swept off and collected through the fine holes at the bottom of the grinding disc 9. When the adjusting member 605 rotates one revolution and contacts the L-shaped plate 701, it will push one end of the L-shaped plate 701 in the direction of the rotation of the adjusting member 605. At this time, the other end of the L-shaped plate 701 moves in the opposite direction with the impact rod 704. While moving, the second spring 702 will be stretched. When the adjusting block 806 leaves the L-shaped plate 701, the second spring 702 will return to its original position, and the impact rod 704 will hit the connecting plate 705. The vibration of the connecting plate 705 will transmit the vibration force to the grinding disc 9 to prevent the powder from clogging the fine holes.
[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can exercise their rights without departing from the scope of the present utility model.
Claims
1. A traditional Chinese medicine grinding device for gastroenterology, comprising a grinding box (1), characterized in that: The surface of the grinding box (1) is fixedly fitted with a bracket (2), the top of the grinding box (1) is fixedly connected to a discharge port (4), a protective shell (5) is provided on one side of the discharge port (4), the bottom of the protective shell (5) is fixedly connected to the grinding box (1), the grinding box (1) is provided with a grinding component (6) and a cleaning component (8), a grinding disc (9) is fixedly connected to the inner wall of the grinding box (1), a number of fine holes are opened on the bottom side of the inner wall of the grinding disc (9), an anti-clogging component (7) is provided on one side of the grinding box (1), a baffle (12) is hinged to the surface of the grinding box (1), a funnel (3) is fixedly connected to the bottom of the grinding box (1), and a handle (11) is fixedly connected to the surface of the baffle (12).
2. The traditional Chinese medicine grinding device for gastroenterology as described in claim 1, characterized in that: The grinding assembly (6) includes a crank (601), a first gear (602), a second gear (603), a connecting column (604), an adjusting member (605), and a first connecting rod (606). One end of the crank (601) passes through the protective shell (5) and the top of the first gear (602) and is rotatably connected to the top of the grinding box (1) via a bearing. The first gear (602) and the second gear (603) mesh. The bottom of the second gear (603) is fixedly connected to one end of the connecting column (604). The adjusting member (605) is movably sleeved on the surface of the connecting column (604). The bottom of the adjusting member (605) is fixedly connected to the first connecting rod (606), and the bottom of the first connecting rod (606) is fixedly connected to the abrasive stone (10).
3. The traditional Chinese medicine grinding device for gastroenterology as described in claim 2, characterized in that: One end of the connecting column (604) penetrates the top wall of the inner cavity of the grinding box (1) and extends to the inner cavity of the protective shell (5). The first gear (602) and the second gear (603) are located inside the protective shell (5). The bottom of the connecting column (604) is rotatably connected to the grinding disc (9) via a rotating shaft. The surface of the connecting column (604) is provided with a circular adjustment hole and a triangular adjustment hole.
4. A traditional Chinese medicine grinding device for gastroenterology as described in claim 3, characterized in that: The inner wall of the connecting column (604) is slidably connected to a first slide rod (14). Limiting blocks (13) are provided at both ends of the first slide rod (14). The inner wall of the front limiting block (13) is threadedly connected to the surface of the first slide rod (14). The rear limiting block (13) is fixedly connected to the first slide rod (14). The adjusting member (605) is provided with a hole that cooperates with the first slide rod (14). The distance between the abrasive stone (10) and the grinding disc (9) is adjusted by the adjusting member (605).
5. A traditional Chinese medicine grinding device for gastroenterology as described in claim 1, characterized in that: The cleaning assembly (8) includes a triangular fixing block (801), a retaining ring (802), a first spring (803), a second sliding rod (804), and a fixing plate (807). The triangular fixing block (801) is adapted to the triangular adjustment hole. One side of the triangular fixing block (801) is fixedly connected to the retaining ring (802). One side of the retaining ring (802) is fixedly connected to the first spring (803) and the second sliding rod. The first spring (803) is sleeved on the surface of the second sliding rod (804). The other end of the first spring (803) is fixedly connected to the fixing plate (807). The other end of the second sliding rod (804) passes through one side of the fixing plate (807) and extends outward.
6. A traditional Chinese medicine grinding device for gastroenterology as described in claim 5, characterized in that: The cleaning assembly (8) further includes an adjusting block (806), a pad (805), a second connecting rod (808), and a brush (809). The inner wall of the adjusting block (806) is slidably connected to the connecting column (604). One side of the adjusting block (806) is fixedly connected to the pad (805). The top of the pad (805) is fixedly connected to the fixing plate (807). One side of the adjusting block (806) is fixedly connected to the second connecting rod (808). The bottom of the second connecting rod (808) is fixedly connected to the brush (809).
7. A traditional Chinese medicine grinding device for gastroenterology as described in claim 1, characterized in that: The anti-blocking component (7) includes an L-shaped plate (701), a second spring (702), a second fixing block (703), a striker (704), and a connecting plate (705). The L-shaped plate (701) is rotatably connected to the inner wall of the grinding box (1) via a rotating shaft. One end of the L-shaped plate (701) extends into the inner cavity of the grinding box (1). The second spring (702) and the striker (704) are fixedly connected to one side of the L-shaped plate (701), and the other end of the second spring (702) is fixedly connected to the second fixing block (703).
8. A traditional Chinese medicine grinding device for gastroenterology as described in claim 7, characterized in that: One side of the second fixing block (703) is fixedly connected to the grinding box (1), one end of the connecting plate (705) passes through the surface of the grinding box (1) and is fixedly connected to the grinding disc (9), and one end of the impact rod (704) is in contact with the connecting plate (705).