A biological tissue grinder

Abstract

The application provides a biological tissue grinder, and belongs to the technical field of biological tissue experimental equipment, which comprises a base, a support fixedly connected to the base, a driving rod vertically arranged and rotationally connected to the support, a driving element for driving the driving rod to rotate, a workbench mounted on the support, a grinding tank placed on the workbench, a grinding cover arranged on the upper surface of the grinding tank, a connecting mechanism arranged between the grinding cover and the grinding tank and facilitating installation and dismounting of the grinding cover, a grinding rod rotationally connected to the grinding cover, the grinding rod being vertically arranged and capable of sliding up and down, one end of the grinding rod extending into the grinding tank, grinding bodies arranged on the outer wall of the end of the grinding rod extending into the grinding tank, and a mounting mechanism arranged between the upper end of the grinding rod and the lower end of the driving rod and facilitating installation and dismounting of the grinding rod, so that the operator can conveniently place the grinding tank on the workbench for grinding, and the possibility of the material spilling out when the grinding tank is placed is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of biological tissue experimental equipment, and particularly relates to a biological tissue grinder. BACKGROUND

[0002] Biological tissue is the division of fertilized egg cells in individual development, which produces many cells that are the same in initial morphology, structure and function, and gradually form various different morphologies and have different functions through cell differentiation. A grinder needs to be used to grind biological tissue when biological tissue samples are processed.

[0003] For example, a biological tissue grinder disclosed in Chinese Utility Model Patent No. CN202021596399.1 comprises an L-shaped rack, a grinding bowl, an adjustable support assembly, a grinding assembly and a grinding bowl cover. The L-shaped rack comprises a base and a vertical rod. The bottom of the vertical rod is vertically and fixedly connected with the top surface of the base. The bottom of the grinding bowl is detachably connected with the top surface of the base. One end of the adjustable support assembly is movably connected with the vertical rod through a right-angle fastener. The top surface of the adjustable support assembly is fixedly connected with a motor. The upper part of the grinding assembly is externally sleeved with the grinding bowl cover. The top of the grinding assembly penetrates through the adjustable support assembly and is connected with the output end of the motor. The bottom of the grinding assembly is arranged in the grinding bowl.

[0004] During use of the above-mentioned grinding device, the operator needs to tilt the grinding tank to place it on the workbench due to the influence of the grinding body. If the amount of biological tissue in the grinding tank is large, the biological tissue is likely to be poured out when the grinding tank is placed. SUMMARY

[0005] Therefore, it is necessary to provide a biological tissue grinder to solve the problems in the prior art.

[0006] To solve the problems in the prior art, the technical scheme adopted by the present application is as follows:

[0007] The utility model provides a biological tissue grinder, which comprises a base, a support fixedly connected to the base, a driving rod vertically arranged and rotationally connected to the support, a driving member arranged on the support and used for driving the driving rod to rotate, a workbench horizontally arranged on the support, a grinding tank placed on the workbench, a grinding cover arranged on the upper surface of the grinding tank, a connecting mechanism arranged between the grinding cover and the grinding tank and used for facilitating mounting and dismounting of the grinding cover, a grinding rod rotationally connected to the grinding cover, the grinding rod being vertically arranged and capable of sliding up and down, one end of the grinding rod extending into the grinding tank, grinding bodies arranged on the outer wall of the end of the grinding rod extending into the grinding tank, and a mounting mechanism arranged between the upper end of the grinding rod and the lower end of the driving rod and used for facilitating mounting and dismounting of the grinding rod.

[0008] Preferably, the connecting mechanism comprises a connecting ring fixedly connected to the outer wall of the grinding cover, a connecting hole arranged on the outer wall of the connecting ring, a connecting groove arranged 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 rotationally 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 penetrating the connecting ring, one end of the connecting groove being in communication with the connecting hole, and the outer wall of the connecting wheel abutting against the outer wall of the grinding tank when the connecting rod is embedded in the connecting groove.

[0009] Preferably, a positioning groove is arranged on the upper end of the outer wall of the grinding tank, the upper end of the positioning groove being in communication with the outside, and a positioning block is fixedly connected to the lower surface of the grinding cover and embedded in the positioning groove.

[0010] Preferably, an installation groove is arranged on the upper end of the outer wall of the grinding tank, a sliding groove is arranged on the inner walls on both sides of the installation groove, an installation plate is slidingly connected in the sliding groove, a first plate is fixedly connected to the lower surface of the installation plate, a second plate is fixedly connected to the groove bottom of the installation groove, and an installation spring is fixedly connected between the first plate and the second plate, the outer wall of the connecting wheel abutting against the outer wall of the installation plate.

[0011] Preferably, the grinding rod comprises a first rod, the grinding bodies are fixedly connected to the outer wall of the first rod, a pressing hole is arranged on the end face of the upper end of the first rod, a through hole is arranged on the outer wall of the upper end of the first rod and in communication with the pressing hole, a scraping rod is slidingly connected in the pressing hole, a second rod is connected to the upper end of the first rod, a pressing rod is fixedly connected to the lower end face of the lower end of the second rod and threadedly connected to the inner wall of the pressing hole, a pressing spring is arranged in the pressing hole, the two ends of the pressing spring are respectively abutting against the hole bottom of the pressing hole and the scraping rod, the lower end of the pressing rod is abutting against the upper surface of the scraping rod at the upper end of the scraping rod, and the scraping rod is abutting against the lower surface of the grinding cover under the restoring force of the pressing spring.

[0012] Preferably, a plurality of scraping grooves are arranged on the upper surfaces of the two ends of the scraping rod along the length direction of the scraping rod, and a rolling wheel is rotatably connected between the inner walls on both sides of the scraping grooves, the axis of the rolling wheel is parallel to the length direction of the scraping rod, and a flexible scraping plate is fixedly connected to the side walls on both sides of the scraping rod, and one end of the rolling wheel and the scraping plate abuts against the lower surface of the grinding cover.

[0013] Preferably, the mounting mechanism comprises a rectangular slot arranged on the end face of the lower end of the driving rod, a rectangular rod fixedly connected to the end face of the upper end of the second rod, a first through hole arranged on the outer wall of the lower end of the driving rod, a second through hole arranged on the outer wall of the rectangular rod, and a plug rod inserted into the first through hole and the second through hole, the first through hole is arranged obliquely, the second through hole is arranged obliquely and aligned with the first through hole, and the cross sections of the first through hole and the second through hole are both arranged in a rectangular shape, a blocking strip is fixedly connected to the end face of the higher end of the plug rod, and the cross section of the plug rod is arranged in a rectangular shape.

[0014] Preferably, a plurality of first teeth are fixedly connected to the upper surface of the plug rod along the length direction of the plug rod, and a plurality of second teeth are fixedly connected to the upper surface of the inner wall of the second through hole, the first teeth and the second teeth are both arranged vertically and engaged.

[0015] Preferably, two sliding holes are arranged 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 limiting ring is fixedly connected to the outer wall of the lower end of the second vertical rod, a limiting spring is sleeved on the outer wall of the second vertical rod, the two ends of the limiting spring abut against the lower surface of the workbench and the limiting ring respectively, a first horizontal rod is fixedly connected between the opposite surfaces of the upper ends of the two first vertical rods at the same end, and a second horizontal rod is fixedly connected to the side wall of the upper end of the first vertical rod, one end of the second horizontal rod abuts against the upper surface of the grinding cover under the action of the restoring force of the limiting spring.

[0016] The beneficial effects of the present application compared with the prior art are:

[0017] 1. The operator places the material in the grinding tank, then inserts the grinding rod into the grinding tank, then covers the grinding cover on the grinding tank, locks the grinding cover on the grinding tank through the connecting mechanism, then connects the upper end of the grinding rod to the driving rod through the mounting mechanism, drives the driving rod to rotate through the driving member, and drives the grinding rod to move through the driving rod. Through such a setting, the structure is simple, the operation is convenient, the operator can conveniently place the grinding tank on the workbench for grinding, and the possibility of spilling the material when placing the grinding tank is reduced.

[0018] 2、The operator inserts the rectangular rod at the upper end of the grinding rod into the rectangular slot, aligns the first through hole and the second through hole, and inserts the plug rod into the first through hole and the second through hole when installing the grinding rod, so that the first tooth and the second tooth are engaged under the action of the spring restoring force, which is simple in structure and convenient to operate, and facilitates the installation and disassembly of the grinding rod by the operator. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the overall structure schematic diagram of the application;

[0020] Figure 2 is the connecting mechanism schematic diagram of the application;

[0021] Figure 3 is the structure schematic diagram of the first rod and the second rod in the application;

[0022] Figure 4 is the structure schematic diagram of the mounting mechanism in the application.

[0023] Fig. 1 is a base; Fig. 2 is a support; Fig. 3 is a driving rod; Fig. 4 is a driving piece; Fig. 5 is a workbench; Fig. 6 is a grinding tank; Fig. 7 is a grinding cover; Fig. 8 is a connecting mechanism; Fig. 9 is a grinding rod; Fig. 10 is a grinding body; Fig. 11 is a mounting mechanism; Fig. 11 is a connecting ring; Fig. 12 is a connecting hole; Fig. 13 is a connecting slot; Fig. 14 is a connecting rod; Fig. 15 is a connecting wheel; Fig. 16 is a connecting rod; Fig. 17 is a positioning slot; Fig. 18 is a positioning block; Fig. 19 is a mounting slot; Fig. 20 is a sliding slot; Fig. 21 is a mounting plate; Fig. 22 is a first plate; Fig. 23 is a second plate; Fig. 24 is a mounting spring; Fig. 25 is a first rod; Fig. 26 is a abutting hole; Fig. 27 is a through hole; Fig. 28 is a scraping rod; Fig. 29 is a second rod; Fig. 30 is an abutting rod; Fig. 31 is an abutting spring; Fig. 32 is a scraping slot; Fig. 33 is a rolling wheel; Fig. 34 is a flexible scraping plate; Fig. 35 is a rectangular slot; Fig. 36 is a rectangular rod; Fig. 37 is a first through hole; Fig. 38 is a second through hole; Fig. 39 is a plug rod; Fig. 40 is a blocking strip; Fig. 41 is a first tooth; Fig. 42 is a second tooth; Fig. 43 is a sliding hole; Fig. 44 is a first vertical rod; Fig. 45 is a second vertical rod; Fig. 46 is a limiting ring; Fig. 47 is a limiting spring; Fig. 48 is a first cross rod; Fig. 49 is a second cross rod; Fig. 50 is a driving motor; Fig. 51 is a first belt pulley; Fig. 52 is a second belt pulley; Fig. 53 is a transmission belt. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0025] As Figure 1As shown in the figure, a biological tissue grinder comprises a base 1, the base 1 is arranged in a rectangular shape, a support 2 is fixedly connected to the base 1, the support 2 is arranged in an L shape, a driving rod 3 arranged in a vertical manner is rotatably connected to the support 2, and a driving member 4 for driving the driving rod 3 to rotate is arranged on the support 2.

[0026] As shown in the figure, Figure 1 , Figure 2 , Figure 3 , Figure 4 The driving member 4 comprises a driving motor fixedly connected to the support 2, a first belt pulley 51 is fixedly connected to the output shaft of the driving motor 50, a second belt 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 belt pulley 51 and the second belt pulley 52. The driving motor 50 drives the first belt pulley 51 to rotate, the first belt pulley 51 drives the second belt pulley 52 to rotate through the transmission belt 53, and the second belt pulley 52 drives the driving rod 3 to rotate.

[0027] As shown in the figure, Figure 1 , Figure 2 , Figure 3 , Figure 4 A workbench 5 is fixedly connected to the support 2, the workbench 5 is arranged in a rectangular shape, and the upper surface of the workbench 5 is arranged in a horizontal manner. A grinding tank 6 is placed on the workbench 5, the upper end of the grinding tank 6 is arranged in an open manner, a grinding cover 7 is arranged on the upper surface of the grinding tank 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 the end of the grinding rod 9 extending into the grinding tank 6, and an installation mechanism 11 is arranged between the upper end of the grinding rod 9 and the driving rod 3.

[0028] As shown in the figure, Figure 1 , Figure 2 , Figure 3 , Figure 4 The installation mechanism 11 is used for facilitating the installation and disassembly of the grinding rod 9 and the driving rod 3, the installation mechanism 11 comprises a rectangular slot 35, the rectangular slot 35 is arranged on the end face of the lower end of the driving rod 3, a rectangular rod 36 is fixedly connected to the end face of the upper end of the grinding rod 9, the cross section of the rectangular rod 36 is the same as that of the rectangular slot 35, the rectangular rod 36 is slidably connected in the rectangular slot 35, a first through hole 37 is arranged on the outer wall of the lower end of the driving rod 3, the first through hole 37 is communicated with the rectangular slot 35 and is arranged in an inclined manner, a second through hole 38 is arranged on the outer wall of the rectangular rod 36, the second through hole 38 is arranged in an inclined manner and is aligned with the first through hole 37, the cross section of the first through hole 37 and the second through hole 38 is arranged in a rectangular shape, and a plug rod 39 is inserted into the first through hole 37 and the second through hole 38, and a blocking strip 40 is fixedly connected to one end of the plug rod 39 close to the first through hole 37.

[0029] As shown in the figure, Figure 1、 Figure 2 、 Figure 3 、 Figure 4 As shown in FIG. 1, in order to improve the stability of the insertion rod 39 inserted into the first through hole 37, a plurality of first teeth 41 are fixedly connected to 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 to the upper surface of the inner wall of the second through hole 38. The first teeth 41 and the second teeth 42 are both vertically arranged, and the first teeth 41 and the second teeth 42 are engaged.

[0030] As shown in FIG. 1, in order to improve the stability of the insertion rod 39 inserted into the first through hole 37, a plurality of first teeth 41 are fixedly connected to 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 to the upper surface of the inner wall of the second through hole 38. The first teeth 41 and the second teeth 42 are both vertically arranged, and the first teeth 41 and the second teeth 42 are engaged. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown in FIG. 1, in order to improve the stability of the insertion rod 39 inserted into the first through hole 37, a plurality of first teeth 41 are fixedly connected to 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 to the upper surface of the inner wall of the second through hole 38. The first teeth 41 and the second teeth 42 are both vertically arranged, and the first teeth 41 and the second teeth 42 are engaged.

[0031] As shown in FIG. 1, in order to improve the stability of the insertion rod 39 inserted into the first through hole 37, a plurality of first teeth 41 are fixedly connected to 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 to the upper surface of the inner wall of the second through hole 38. The first teeth 41 and the second teeth 42 are both vertically arranged, and the first teeth 41 and the second teeth 42 are engaged. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown in FIG. 1, in order to improve the stability of the insertion rod 39 inserted into the first through hole 37, a plurality of first teeth 41 are fixedly connected to 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 to the upper surface of the inner wall of the second through hole 38. The first teeth 41 and the second teeth 42 are both vertically arranged, and the first teeth 41 and the second teeth 42 are engaged.

[0032] As shown in FIG. 1, in order to improve the stability of the insertion rod 39 inserted into the first through hole 37, a plurality of first teeth 41 are fixedly connected to 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 to the upper surface of the inner wall of the second through hole 38. The first teeth 41 and the second teeth 42 are both vertically arranged, and the first teeth 41 and the second teeth 42 are engaged. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown in FIG. 1, in order to improve the stability of the insertion rod 39 inserted into the first through hole 37, a plurality of first teeth 41 are fixedly connected to 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 to the upper surface of the inner wall of the second through hole 38. The first teeth 41 and the second teeth 42 are both vertically arranged, and the first teeth 41 and the second teeth 42 are engaged.

[0033] AsFigure 1 , Figure 2 , Figure 3 , Figure 4 As shown, to facilitate the operator in scraping 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 clamping hole 26 is opened on the upper end face of the first rod 25. The clamping hole 26 is circular. A through hole 27 is opened on the upper outer wall of the first rod 25. The through hole 27 communicates with the clamping hole 26. A scraper rod 28 is slidably connected in the clamping 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 clamping rod 30 is fixedly connected to the lower end of the second rod 29. 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 inside the clamping hole 26. The two ends of the clamping spring 31 are respectively clamped to the bottom of the clamping hole 26 and the lower surface of the scraper rod 28. A fixed rod is fixedly connected to the lower surface of the scraper rod 28. The clamping spring 31 is sleeved on the outer wall of the fixed rod.

[0034] 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, several scraper grooves 32 are evenly spaced along the length of the scraper rod 28 on the upper surface of both ends of the scraper rod 28. A rolling wheel 33 is rotatably connected between the inner walls of both sides of the scraper groove 32. The axis of the rolling wheel 33 is parallel to the length of the scraper rod 28. The rolling wheel 33 abuts against the lower surface of the grinding cover 7. A flexible scraper plate 34 is fixedly connected to both side walls 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 retaining spring 31, the rolling wheel 33 is always pressed against the lower surface of the grinding cover 7, and one end of the flexible scraper plate 34 is always pressed against the lower surface of the grinding cover 7.

[0035] The working principle of the embodiment of the application is as follows: the material is placed in the grinding tank 6, one end of the grinding rod 9 is inserted in the grinding tank 6, the grinding cover 7 is slidably connected on the grinding rod 9, then the grinding tank 6 is placed on the workbench 5, the first vertical rod 44 is rotated, the first vertical rod 44 is slid into the sliding hole 43 under the action of the restoring force of the limiting spring 47, under the action of the restoring force of the limiting spring 47, the second horizontal rod 49 abuts against the upper surface of the grinding cover 7, the operator drives the grinding rod 9 upward, the scraping rod 28 abuts against the lower surface of the grinding cover 7 under the action of the abutting spring 31, the upper end of the rectangular rod 36 of the grinding rod 9 is inserted in the rectangular groove 35 while the grinding rod 9 moves upward, the first through hole 37 and the second through hole 38 are aligned, the inserting rod 39 is inserted in the first through hole 37 and the second through hole 38, under the action of the abutting spring 31, the grinding rod 9 has a downward movement tendency, so that the first tooth 41 on the inserting rod 39 is engaged with the second tooth 42 on the inner wall of the second through hole 38.

[0036] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0037] Although the embodiments of the application have been shown and described, it is to be understood that for the purpose of the present application, the changes in the embodiments, the substitutions of equivalent techniques and the modifications of the embodiments can be made by those skilled in the art without departing from the spirit and scope of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A biological tissue grinder, characterized in that, Includes a base (1), a bracket (2) fixedly connected to the base (1), a vertically arranged drive rod (3) rotatably connected to the bracket (2), a drive component (4) for driving the drive rod (3) to rotate on the bracket (2), a worktable (5) mounted on the bracket (2), the worktable (5) being horizontally arranged, a grinding jar (6) placed on the worktable (5), a grinding cover (7) 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) between the grinding cover (7) and the grinding jar (6), a grinding rod (9) rotatably connected to the grinding cover (7), the grinding rod (9) being vertically arranged and capable of sliding up and down, one end of the grinding rod (9) extending into the grinding jar ( In 6), a grinding body (10) is provided on the outer wall of the end of the grinding rod (9) that extends into the grinding tank (6), and an installation mechanism (11) is provided between the upper end of the grinding rod (9) and the lower end of the drive rod (3) to facilitate the installation and disassembly of the grinding rod (9); the connecting mechanism (8) includes a connecting ring (11) fixedly connected to the outer wall of the grinding cover (7), a connecting hole (12) opened on the outer wall of the connecting ring (11), a connecting groove (13) opened 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), and an eccentrically rotating connecting rod. A connecting wheel (15) is on 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). The connecting hole (12) penetrates the inside and outside of the connecting ring (11). One end of the connecting groove (13) communicates with 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). A positioning groove (17) is opened at the upper end of the outer wall of the grinding jar (6). The upper end of the positioning groove (17) communicates with the outside. A positioning block (18) is fixedly connected to the lower surface of the grinding cover (7). (18) is embedded in the positioning groove (17); an installation groove (19) is opened at the upper end of the outer wall of the grinding jar (6), a sliding groove (20) is opened on the inner walls on both sides of the installation groove (19), an installation plate (21) is slidably connected in the sliding groove (20), a first plate (22) is fixedly connected on the lower surface of the installation plate (21), a second plate (23) is fixedly connected on the bottom of the installation groove (19), an installation 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 installation plate (21).

2. The biological tissue grinder according to claim 1, characterized in that, 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 clamping hole (26) is opened on the upper end face of the first rod (25), a through hole (27) is opened on the upper outer wall of the first rod (25), the through hole (27) communicates with the clamping hole (26), a scraper rod (28) is slidably connected in the clamping hole (26), a second rod (29) is connected to the upper end of the first rod (25), and the second rod (29) is lower... A clamping rod (30) is fixedly connected to the end face. The outer wall of the clamping rod (30) is threaded 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 to the bottom of the clamping hole (26) and the scraper rod (28). The upper end of the scraper rod (28) and the lower end of the clamping rod (30) are clamped to the upper surface of the scraper rod (28). The scraper rod (28) is clamped to the lower surface of the grinding cover (7) under the action of the restoring force of the clamping spring (31).

3. The biological tissue grinder according to claim 2, characterized in that, Several scraping grooves (32) are evenly spaced along the length of the scraping rod (28) on the upper surface of both ends of the scraping rod (28). A rolling wheel (33) is rotatably connected between the inner walls of both sides of the scraping groove (32). The axis of the rolling wheel (33) is parallel to the length of the scraping rod (28). A flexible scraping plate (34) is fixedly connected to both side walls of the scraping rod (28). One end of the rolling wheel (33) and the scraping plate abuts against the lower surface of the grinding cover (7).

4. The biological tissue grinder according to claim 3, characterized in that, The installation mechanism (11) includes a rectangular groove (35) on the lower end face of the drive rod (3), a rectangular rod (36) fixedly connected to the upper end face of the second rod (29), a first through hole (37) on the lower outer wall of the drive rod (3), a second through hole (38) on the outer wall of the rectangular rod (36), and a plug rod (39) inserted into the first through hole (37) and the second through hole (38). The first through hole (37) is inclined, and 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. A stop bar (40) is fixedly connected to the end face of the plug rod (39) that is higher than the first through hole (37). The cross-section of the plug rod (39) is rectangular.

5. The biological tissue grinder according to claim 4, characterized in that, A plurality of first teeth (41) are fixedly connected to the upper surface of the insert (39) along the length direction of the insert (39), and a plurality of second teeth (42) are fixedly connected to the upper surface of the inner wall of the second through hole (38). The first teeth (41) and the second teeth (42) are both vertically arranged and the first teeth (41) and the second teeth (42) mesh.

6. 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 face of the first vertical rod (44). A limiting ring (46) is fixedly connected to the lower outer wall of the second vertical rod (45). A limiting spring (47) is sleeved on the outer wall of the second vertical rod (45). The two ends of the limiting spring (47) abut against the lower surface of the workbench (5) and the limiting ring (46) respectively. A first horizontal rod (48) is fixedly connected between the opposite faces of the upper ends of the two first vertical rods (44) at the same end. A second horizontal rod (49) is fixedly connected to the upper side wall of the first vertical rod (44). One end of the second horizontal rod (49) abuts against the upper surface of the grinding cover (7) under the action of the restoring force of the limiting spring (47).

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