Biological tissue grinding machine

Abstract

The invention provides a biological tissue grinding machine, and belongs to the technical field of biological tissue experiment equipment, the biological tissue grinding machine comprises a base, a support is fixedly connected to the base, a vertically-arranged driving rod is rotatably connected to the support, a driving part used for driving the driving rod to rotate is arranged on the support, a workbench is installed on the support, and a grinding tank is placed on the workbench; a grinding cover is arranged on the upper surface of the grinding tank, a connecting mechanism facilitating mounting and dismounting of the grinding cover is arranged between the grinding cover and the grinding tank, a grinding rod is rotatably connected to the grinding cover, the grinding rod is vertically arranged and can slide up and down, one end of the grinding rod extends into the grinding tank, and the other end of the grinding rod extends into the grinding tank. And a grinding body is arranged on the outer wall of the end, stretching into the grinding tank, of the grinding rod, and a mounting mechanism facilitating mounting and dismounting of the grinding rod is arranged between the upper end of the grinding rod and the lower end of the driving rod. And the possibility that the materials are poured out when being placed in the grinding tank is reduced.

Description

Technical Field

[0001] The invention relates to the field of biological tissue experimental equipment, in particular to a biological tissue grinder. Background Art

[0002] From the perspective of individual development, biological tissues are the result of the division of fertilized egg cells to produce many cells. These cells have the same initial morphology, structure and function. Later, through cell differentiation, they gradually form various different morphologies and have different functions. When processing biological tissue samples, a grinder is needed to grind the biological tissue.

[0003] For example, the Chinese utility model patent with application number CN202021596399.1 discloses an adjustable biological tissue grinder; it includes an L-shaped frame, a grinding bowl, an adjustable support assembly, a grinding assembly and a mortar cover, the L-shaped frame includes a base and a vertical rod, the bottom of the vertical rod is vertically fixed to the top surface of the base, the bottom of the grinding bowl is detachably connected to the top surface of the base, one end of the adjustable support assembly is movably connected to the vertical rod through a right-angle fastener, a motor is fixed to the top surface of the adjustable support assembly, the mortar cover is sleeved on the outer side of the upper part of the grinding assembly, the top of the grinding assembly passes through the adjustable support assembly and is connected to the output end of the motor, and the bottom of the grinding assembly extends into the interior of the grinding bowl, and the mortar cover is buckled with the grinding bowl.

[0004] During use of the grinding device disclosed above, the operator places the biological tissue in the grinding jar and then places the grinding jar on the workbench. Due to the influence of the grinding body, the operator needs to tilt the grinding jar before placing the grinding jar on the workbench. If the amount of biological tissue in the grinding jar is large, the biological tissue is easily dumped out when placing the grinding jar. Summary of the invention

[0005] Based on this, it is necessary to provide a biological tissue grinder to address the problems of the prior art.

[0006] In order to solve the problems of the prior art, the technical solution adopted by the present invention is: A biological tissue grinder comprises a base, a bracket is fixedly connected to the base, a vertically arranged driving rod is rotatably connected to the bracket, a driving member for driving the driving rod to rotate is provided on the bracket, a workbench is installed on the bracket, the workbench is horizontally arranged, a grinding jar is placed on the workbench, a grinding cover is provided on the upper surface of the grinding jar, a connecting mechanism for convenient installation and disassembly of the grinding cover is provided between the grinding cover and the grinding jar, a grinding rod is rotatably connected to the grinding cover, the grinding rod is vertically arranged and can slide up and down, one end of the grinding rod extends into the grinding jar, a grinding body is provided on the outer wall of the end of the grinding rod extending into the grinding jar, and an installation mechanism for convenient installation and disassembly of the grinding rod is provided between the upper end of the grinding rod and the lower end of the driving rod.

[0007] Preferably, the connecting mechanism includes a connecting ring fixedly connected to the outer wall of the grinding cover, a connecting hole opened on the outer wall of the connecting ring, a connecting groove opened on the outer wall of the connecting ring, a connecting rod fixedly connected between the inner walls on both sides of the connecting hole, a connecting wheel eccentrically connected to the outer wall of the connecting rod, and a connecting rod fixedly connected to the outer wall of the connecting wheel. The connecting hole passes through the inside and outside of the connecting ring, one end of the connecting groove is connected to the connecting hole, and when the connecting rod is embedded in the connecting groove, the outer wall of the connecting wheel abuts against the outer wall of the grinding jar.

[0008] Preferably, a positioning groove is provided at the upper end of the outer wall of the grinding jar, the upper end of the positioning groove is communicated with the outside, and a positioning block is fixedly connected to the lower surface of the grinding cover, and the positioning block is embedded in the positioning groove.

[0009] Preferably, a mounting groove is provided at the upper end of the outer wall of the grinding jar, a sliding groove is provided on the inner walls on both sides of the mounting groove, a mounting plate is slidably connected in the sliding groove, a first plate is fixedly connected to the lower surface of the mounting plate, a second plate is fixedly connected to the bottom of the mounting groove, a mounting spring is fixedly connected between the first plate and the second plate, and the outer wall of the connecting wheel abuts against the outer wall of the mounting plate.

[0010] Preferably, the grinding rod includes a first rod, the grinding body is fixedly connected to the outer wall of the first rod, a tightening hole is provided on the upper end face of the first rod, a through hole is provided on the outer wall of the upper end of the first rod, the through hole is connected to the tightening hole, a scraper rod is slidably connected in the tightening hole, a second rod is connected to the upper end of the first rod, a tightening rod is fixedly connected on the lower end face of the second rod, the outer wall of the tightening rod is threadedly connected to the inner wall of the tightening hole, a tightening spring is installed in the tightening hole, two ends of the tightening spring are respectively tightened on the bottom of the tightening hole and the scraper rod, at the upper end of the scraper rod, the lower end of the tightening rod is tightened on the upper surface of the scraper rod, and the scraper rod is tightened on the lower surface of the grinding cover under the action of the restoring force of the tightening spring.

[0011] Preferably, a plurality of scraper grooves are evenly spaced along the length direction of the scraper rod on the upper surfaces at both ends of the scraper rod, and a rolling wheel is rotatably connected between the inner walls on both sides of the scraper groove, and the axis of the rolling wheel is parallel to the length direction of the scraper rod. A flexible scraper plate is fixedly connected to the side walls on both sides of the scraper rod, and one end of the rolling wheel and the scraper plate abuts against the lower surface of the grinding cover.

[0012] Preferably, the mounting mechanism includes a rectangular groove on the end surface of the lower end of the driving rod, a rectangular rod fixedly connected to the end surface of the upper end of the second rod, a first through hole on the outer wall of the lower end of the driving rod, a second through hole on the outer wall of the rectangular rod, and an insertion rod inserted into the first through hole and the second through hole, the first through hole is inclined, the second through hole is inclined and aligned with the first through hole, the cross-sections of the first through hole and the second through hole are both rectangular, a baffle is fixedly connected to the end surface of the insertion rod at a higher height close to the first through hole, and the cross-section of the insertion rod is rectangular.

[0013] Preferably, a plurality of first teeth are fixedly connected to the upper surface of the insertion rod along the length direction of the insertion rod, and a plurality of second teeth are fixedly connected to the upper surface of the inner wall of the second through hole, and the first teeth and the second teeth are vertically arranged and meshed with each other.

[0014] Preferably, two sliding holes are provided on both ends of the workbench, a first vertical rod is slidably connected in the sliding hole, a second vertical rod is rotatably connected to the end face of the lower end of the first vertical rod, a limit ring is fixedly connected to the outer wall of the lower end of the second vertical rod, a limit spring is sleeved on the outer wall of the second vertical rod, two ends of the limit spring respectively abut against the lower surface of the workbench and the limit ring, a first cross rod is fixedly connected between the opposite surfaces of the upper ends of the two first vertical rods at the same end, a second cross rod is fixedly connected to the side wall of the upper end of the first vertical rod, and one end of the second cross rod abuts against the upper surface of the grinding cover under the action of the restoring force of the limit spring.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The operator places the material in the grinding jar, then inserts the grinding rod into the grinding jar, then places the grinding cover on the grinding jar, locks the grinding cover on the grinding jar through the connecting mechanism, and then connects the upper end of the grinding rod to the driving rod through the mounting mechanism, and drives the driving rod to rotate through the driving member, and the driving rod drives the grinding rod to move. Through such an arrangement, the structure is simple and the operation is convenient, which facilitates the operator to place the grinding jar on the workbench for grinding and reduces the possibility of the material dumping out when the grinding jar is placed.

[0016] 2. When installing the grinding rod, the operator inserts the rectangular rod at the upper end of the grinding rod into the rectangular groove, aligns the first through hole and the second through hole, and inserts the insertion rod into the first through hole and the second through hole. The grinding rod moves downward under the action of the restoring force of the clamping spring, so that the first tooth and the second tooth engage. Through such an arrangement, the structure is simple and the operation is convenient, which facilitates the operator to install and disassemble the grinding rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of this application; Figure 2It is a schematic diagram of the connection mechanism of the present application; Figure 3 is a schematic diagram of the structure of the first rod and the second rod in this application; Figure 4 It is a structural schematic diagram of the installation mechanism in this application.

[0018] Figure numerals: 1, base; 2, bracket; 3, driving rod; 4, driving member; 5, workbench; 6, grinding jar; 7, grinding cover; 8, connecting mechanism; 9, grinding rod; 10, grinding body; 11, mounting mechanism; 11, connecting ring; 12, connecting hole; 13, connecting groove; 14, connecting rod; 15, connecting wheel; 16, connecting rod; 17, positioning groove; 18, positioning block; 19, mounting groove; 20, sliding groove; 21, mounting plate; 22, first plate; 23, second plate; 24, mounting spring; 25, first rod; 26, abutting hole; 27, through hole; 2 8. Scraper rod; 29. ​​Second rod; 30. Clamping rod; 31. Clamping spring; 32. Scraper groove; 33. Rolling wheel; 34. Flexible scraper plate; 35. Rectangular groove; 36. Rectangular rod; 37. First through hole; 38. Second through hole; 39. Insert rod; 40. Baffle bar; 41. First tooth; 42. Second tooth; 43. Sliding hole; 44. First vertical rod; 45. Second vertical rod; 46. Limiting ring; 47. Limiting spring; 48. First cross rod; 49. Second cross rod; 50. Driving motor; 51. First pulley; 52. Second pulley; 53. Transmission belt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, a biological tissue grinder includes a base 1, which is rectangular in shape. A bracket 2 is fixedly connected to the base 1, and the bracket 2 is L-shaped. A vertically arranged driving rod 3 is rotatably connected to the bracket 2. A driving member 4 for driving the driving rod 3 to rotate is provided on the bracket 2.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the driving member 4 includes a driving motor fixedly connected to the bracket 2, a first pulley 51 is fixedly connected to the output shaft of the driving motor 50, a second pulley 52 is coaxially fixedly connected to the outer wall of the upper end of the driving rod 3, and a transmission belt 53 is wound between the first pulley 51 and the second pulley 52. ​​The first pulley 51 is driven to rotate by the driving motor 50, the first pulley 51 drives the second pulley 52 to rotate through the transmission belt 53, and the second pulley 52 drives the driving rod 3 to rotate.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a workbench 5 is fixedly connected to the bracket 2, the workbench 5 is rectangular and the upper surface of the workbench 5 is horizontal, a grinding jar 6 is placed on the workbench 5, the upper end of the grinding jar 6 is open, a grinding cover 7 is provided on the upper surface of the grinding jar 6, a grinding rod 9 is rotatably connected to the grinding cover 7, the grinding rod 9 can slide up and down, a grinding body 10 is fixedly connected to the outer wall of one end of the grinding rod 9 extending into the grinding jar 6, and a mounting mechanism 11 is provided between the upper end of the grinding rod 9 and the driving rod 3.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the mounting mechanism 11 is used to facilitate the installation and disassembly of the grinding rod 9 and the driving rod 3. The mounting mechanism 11 includes a rectangular groove 35, which is provided on the lower end surface of the driving rod 3. A rectangular rod 36 is fixedly connected to the upper end surface of the grinding rod 9. The cross-sections of the rectangular rod 36 and the rectangular groove 35 are the same. The rectangular rod 36 is slidably connected in the rectangular groove 35. A first through hole 37 is provided on the outer wall of the lower end of the driving rod 3. The first through hole 37 is connected to the rectangular groove 35 and is inclined. A second through hole 38 is provided on the outer wall of the rectangular rod 36. The second through hole 38 is inclined. The second through hole 38 is aligned with the first through hole 37. The cross-sections of the first through hole 37 and the second through hole 38 are both rectangular. An insertion rod 39 is inserted in the first through hole 37 and the second through hole 38. A blocking bar 40 is fixedly connected to one end of the insertion rod 39 close to the height angle of the first through hole 37.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in order to improve the stability of the insertion rod 39 in the first through hole 37, a plurality of first teeth 41 are fixedly connected on the upper surface of the insertion rod 39 at uniform intervals along the length direction of the insertion rod 39, and a plurality of second teeth 42 are fixedly connected on the upper surface of the inner wall of the second through hole 38, and the first teeth 41 and the second teeth 42 are both vertically arranged and meshed with each other.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in order to improve the stability of the grinding cover 7 on the grinding jar 6, a connecting mechanism 8 is provided between the grinding cover 7 and the grinding jar 6, and the connecting mechanism 8 includes a connecting ring 11, and the connecting ring 11 is fixedly connected to the outer wall of the grinding cover 7, and the inner wall of the connecting ring 11 abuts against the outer wall of the upper end of the grinding jar 6, and a connecting hole 12 is provided on the outer wall of the connecting ring 11, and the connecting hole 12 runs through the inside and outside of the connecting ring 11, and a connecting groove 13 is provided on the outer wall of the connecting ring 11, and the connecting groove 13 is aligned with the connecting hole 12, and a connecting rod 14 is fixedly connected between the inner walls on both sides of the connecting hole 12, and a connecting wheel 15 is eccentrically connected to the outer wall of the connecting rod 14, and a connecting rod 16 is fixedly connected to the outer wall of the connecting wheel 15, and when the connecting rod 16 is located in the connecting groove 13, the outer wall of the connecting wheel 15 abuts against the outer wall of the grinding jar 6.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in order to improve the stability of the outer wall of the connecting wheel 15 abutting against the outer wall of the grinding jar 6, a mounting groove 19 is provided on the outer wall of the grinding jar 6, and a sliding groove 20 is provided on the inner walls on both sides of the mounting groove 19, and a mounting plate 21 is slidably connected in the sliding groove 20, a first plate 22 is fixedly connected to the lower surface of the mounting plate 21, a second plate 23 is fixedly connected to the bottom of the mounting groove 19, and a mounting spring 24 is fixedly connected between the first plate 22 and the second plate 23, and the outer wall of the connecting wheel 15 abuts against the outer wall of the mounting plate 21. When the outer wall of the connecting wheel 15 abuts against the mounting plate 21, the mounting spring 24 is in a compressed setting.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in order to facilitate the operator to align the connecting wheel 15 with the mounting plate 21, a positioning groove 17 is provided at the upper end of the outer wall of the grinding jar 6, the upper end of the positioning groove 17 is connected to the outside, and a positioning block 18 is fixedly connected to the lower surface of the grinding cover 7, and the positioning block 18 is inserted into the positioning groove 17.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, in order to facilitate the operator to scrape off the material on the lower surface of the grinding cover 7, the grinding rod 9 includes a first rod 25, the grinding body 10 is fixedly connected to the outer wall of the first rod 25, a tightening hole 26 is provided on the upper end surface of the first rod 25, the tightening hole 26 is circular, a through hole 27 is provided on the outer wall of the upper end of the first rod 25, the through hole 27 is connected to the tightening hole 26, a scraping rod 28 is slidably connected in the tightening hole 26, a second rod 29 is connected to the upper end of the first rod 25, the second rod 29 is slidably connected to the grinding cover 7, a tightening rod 30 is fixedly connected to the lower end of the second rod 29, the outer wall of the tightening rod 30 is threadedly connected to the inner wall of the tightening hole 26, a tightening spring 31 is installed inside the tightening hole 26, the two ends of the tightening spring 31 are respectively tightened on the bottom of the tightening hole 26 and the lower surface of the scraping rod 28, a fixed rod is fixedly connected to the lower surface of the scraping rod 28, and the tightening spring 31 is sleeved on the outer wall of the fixed rod.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in order to reduce the friction between the scraper rod 28 and the lower surface of the grinding cover 7, a plurality of scraper grooves 32 are evenly spaced along the length direction of the scraper rod 28 on the upper surfaces at both ends of the scraper rod 28, and a rolling wheel 33 is rotatably connected between the inner walls on both sides of the scraper groove 32, and the axis of the rolling wheel 33 is arranged parallel to the length direction of the scraper rod 28. The rolling wheel 33 abuts against the lower surface of the grinding cover 7, and a flexible hanging partner is fixedly connected to the side walls on both sides of the scraper rod 28. One end of the flexible scraper plate 34 abuts against the lower surface of the grinding cover 7. Under the action of the restoring force of the clamping spring 31, the rolling wheel 33 always abuts against the lower surface of the grinding cover 7, and one end of the flexible scraper plate 34 always abuts against the lower surface of the grinding cover 7.

[0030] The working principle of the embodiment of the present application is as follows: the material is placed in the grinding jar 6, and then one end of the grinding rod 9 is inserted into the grinding jar 6, the grinding cover 7 is slidably connected to the grinding rod 9, and then the grinding jar 6 is placed on the workbench 5, the first vertical rod 44 is rotated, and the first vertical rod 44 is rotated to a vertical position, and the first vertical rod 44 slides into the sliding hole 43 under the action of the restoring force of the limit spring 47, and under the action of the restoring force of the limit spring 47, the second cross bar 49 abuts against the upper surface of the grinding cover 7, and the operator The grinding rod 9 is driven upward, and the scraper rod 28 abuts against the lower surface of the grinding cover 7 under the action of the clamping spring 31. When the grinding rod 9 moves upward, the rectangular rod 36 at the upper end of the grinding rod 9 is inserted into the rectangular groove 35, and the first through hole 37 and the second through hole 38 are aligned. The insertion rod 39 is inserted into the first through hole 37 and the second through hole 38. Under the action of the clamping spring 31, the grinding rod 9 tends to move downward, so that the first teeth 41 on the insertion rod 39 are engaged with the second teeth 42 on the inner wall of the second through hole 38.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A biological tissue grinder, characterized in that: The invention comprises a base (1), a bracket (2) is fixedly connected to the base (1), and a vertically arranged driving rod (3) is rotatably connected to the bracket (2). A driving member (4) for driving the driving rod (3) to rotate is provided on the bracket (2), a workbench (5) is installed on the bracket (2), the workbench (5) is arranged horizontally, a grinding jar (6) is placed on the workbench (5), a grinding cover (7) is provided on the upper surface of the grinding jar (6), a connecting mechanism (8) for facilitating the installation and removal of the grinding cover (7) is provided between the grinding cover (7) and the grinding jar (6), a grinding rod (9) is rotatably connected to the grinding cover (7), the grinding rod (9) is arranged vertically and can slide up and down, one end of the grinding rod (9) extends into the grinding jar (6), a grinding body (10) is provided on the outer wall of the end of the grinding rod (9) extending into the grinding jar (6), and an installation mechanism (11) for facilitating the installation and removal of the grinding rod (9) is provided between the upper end of the grinding rod (9) and the lower end of the driving rod (3).

2. The biological tissue grinder according to claim 1, characterized in that: The connecting mechanism (8) comprises a connecting ring (11) fixedly connected to the outer wall of the grinding cover (7), a connecting hole (12) provided on the outer wall of the connecting ring (11), a connecting groove (13) provided on the outer wall of the connecting ring (11), a connecting rod (14) fixedly connected between the inner walls on both sides of the connecting hole (12), a connecting wheel (15) eccentrically connected to the outer wall of the connecting rod (14), and a connecting rod (16) fixedly connected to the outer wall of the connecting wheel (15); the connecting hole (12) passes through the inside and outside of the connecting ring (11); one end of the connecting groove (13) is connected to the connecting hole (12); when the connecting rod (16) is embedded in the connecting groove (13), the outer wall of the connecting wheel (15) abuts against the outer wall of the grinding jar (6).

3. The biological tissue grinder according to claim 2, characterized in that: A positioning groove (17) is provided at the upper end of the outer wall of the grinding jar (6), the upper end of the positioning groove (17) is communicated with the outside, and is fixedly connected to a positioning block (18) on the lower surface of the grinding cover (7), and the positioning block (18) is embedded in the positioning groove (17).

4. The biological tissue grinder according to claim 3, characterized in that: A mounting groove (19) is provided at the upper end of the outer wall of the grinding jar (6), a sliding groove (20) is provided on the inner walls on both sides of the mounting groove (19), a mounting plate (21) is slidably connected in the sliding groove (20), a first plate (22) is fixedly connected to the lower surface of the mounting plate (21), a second plate (23) is fixedly connected to the bottom of the mounting groove (19), a mounting spring (24) is fixedly connected between the first plate (22) and the second plate (23), and the outer wall of the connecting wheel (15) abuts against the outer wall of the mounting plate (21).

5. The biological tissue grinder according to claim 1, characterized in that: The grinding rod (9) comprises a first rod (25), the grinding body (10) is fixedly connected to the outer wall of the first rod (25), a tightening hole (26) is provided on the upper end surface of the first rod (25), a through hole (27) is provided on the upper outer wall of the first rod (25), the through hole (27) is communicated with the tightening hole (26), a scraper rod (28) is slidably connected in the tightening hole (26), a second rod (29) is connected to the upper end of the first rod (25), and the lower end of the second rod (29) is provided with a through hole (27) connected to the tightening hole (26). A clamping rod (30) is fixedly connected to the end surface, and the outer wall of the clamping rod (30) is threadedly connected to the inner wall of the clamping hole (26). A clamping spring (31) is installed in the clamping hole (26). The two ends of the clamping spring (31) are respectively clamped on the bottom of the clamping hole (26) and the scraper rod (28). At the upper end of the scraper rod (28), the lower end of the clamping rod (30) is clamped on the upper surface of the scraper rod (28). The scraper rod (28) is clamped on the lower surface of the grinding cover (7) under the action of the restoring force of the clamping spring (31).

6. The biological tissue grinder according to claim 5, characterized in that: A plurality of scraper grooves (32) are evenly spaced on the upper surfaces at both ends of the scraper rod (28) along the length direction of the scraper rod (28); a rolling wheel (33) is rotatably connected between the inner walls on both sides of the scraper groove (32); the axis of the rolling wheel (33) is parallel to the length direction of the scraper rod (28); a flexible scraper plate (34) is fixedly connected to the side walls on both sides of the scraper rod (28); one end of the rolling wheel (33) and the scraper plate are both in contact with the lower surface of the grinding cover (7).

7. The biological tissue grinder according to claim 6, characterized in that: The mounting mechanism (11) comprises a rectangular groove (35) formed on the lower end surface of the driving rod (3), a rectangular rod (36) fixedly connected to the upper end surface of the second rod (29), a first through hole (37) formed on the outer wall of the lower end of the driving rod (3), a second through hole (38) formed on the outer wall of the rectangular rod (36), and an insertion rod (39) inserted into the first through hole (37) and the second through hole (38), wherein the first through hole (37) is inclined, the second through hole (38) is inclined and aligned with the first through hole (37), the cross sections of the first through hole (37) and the second through hole (38) are both rectangular, and a stopper (40) is fixedly connected to the end surface of the insertion rod (39) which is close to the first through hole (37) and has a higher height, and the cross section of the insertion rod (39) is rectangular.

8. The biological tissue grinder according to claim 7, characterized in that: A plurality of first teeth (41) are fixedly connected on the upper surface of the insertion rod (39) along the length direction of the insertion rod (39), and a plurality of second teeth (42) are fixedly connected on the upper surface of the inner wall of the second through hole (38), wherein the first teeth (41) and the second teeth (42) are both vertically arranged and meshed with each other.

9. The biological tissue grinder according to claim 1, characterized in that: Two sliding holes (43) are provided at both ends of the workbench (5), a first vertical rod (44) is slidably connected in the sliding hole (43), a second vertical rod (45) is rotatably connected to the lower end surface of the first vertical rod (44), a limit ring (46) is fixedly connected to the outer wall of the lower end of the second vertical rod (45), a limit spring (47) is sleeved on the outer wall of the second vertical rod (45), two ends of the limit spring (47) are respectively abutted against the lower surface of the workbench (5) and the limit ring (46), a first cross rod (48) is fixedly connected between the opposite surfaces of the upper ends of the two first vertical rods (44) at the same end, a second cross rod (49) is fixedly connected to the side wall of the upper end of the first vertical rod (44), and one end of the second cross rod (49) is abutted against the upper surface of the grinding cover (7) under the action of the restoring force of the limit spring (47).

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