A molecular biology experiment grinding device

Abstract

The application relates to the technical field of molecular biology experiment equipment, in particular to a molecular biology experiment grinding device which comprises a bottom shell, a crushing structure, a discharging structure, a grinding structure, a filter box and a collecting structure; the crushing structure is used for pre-crushing experimental materials; the discharging structure is used for discharging the crushed materials to the grinding structure at intervals; the grinding structure is used for further grinding the materials and introducing the materials into the filter box; the filter box is used for filtering the ground materials and is provided with an anti-blocking assembly to reduce blocking; and the collecting structure is used for receiving and collecting the processed materials. The application realizes integrated and continuous processing of crushing, discharging, grinding, filtering and collecting of experimental materials, and has the advantages of high processing efficiency, good grinding uniformity, smooth filtering and convenient collecting.

Description

Technical Field

[0001] This invention relates to the field of molecular biology experimental equipment technology, and in particular to a molecular biology experimental grinding device. Background Technology

[0002] In molecular biology experiments, it is often necessary to pre-crush and grind plant tissues, animal tissues, bacterial samples, or other experimental materials to facilitate subsequent lysis, extraction, amplification, detection, or component analysis. Therefore, the grinding effect directly affects the particle size distribution, uniformity, and ease of subsequent experimental procedures.

[0003] Most existing experimental grinding devices only have a single crushing or grinding function. They typically require initial crushing of the experimental materials using a crushing device, followed by transferring the crushed material to another grinding container for further processing. In some cases, manual sieving, unloading, and collection are also necessary. This type of processing not only involves numerous steps and requires multiple material transfers by researchers, but also tends to be inefficient, cumbersome, and prone to sample spillage or residue during continuous processing.

[0004] Furthermore, existing equipment often lacks a reasonable graded processing structure when processing experimental materials. This leads to materials entering the grinding zone directly without sufficient pre-crushing, or large quantities of material entering the grinding zone at once. This can easily cause problems such as excessive grinding load, uneven grinding, material accumulation, and unstable feeding, affecting the final processing effect. Especially for experimental materials that require good uniformity and high processing integrity, traditional one-time feeding or single-stage grinding methods are difficult to balance processing efficiency and processing quality.

[0005] Furthermore, existing experimental grinding equipment has certain shortcomings in the filtration and collection stages. On the one hand, ground materials tend to accumulate in the filtration area during the filtration process, causing blockages and affecting the continued flow of subsequent materials and continuous operation. On the other hand, some materials that do not meet the requirements are not easy to remove and reprocess, resulting in poor flexibility in the use of the equipment. At the same time, material adhesion and residue can easily occur in the corners, inner walls, or collection areas of the equipment, which not only reduces the sample collection rate but also increases the difficulty of subsequent cleaning and maintenance.

[0006] Therefore, there is still a need in the existing technology for a molecular biology experimental grinding device that can effectively connect the crushing, batch feeding, further grinding, filtration and anti-clogging, and collection and processing of experimental materials, so as to solve the problems of the existing device's scattered processing flow, insufficient grinding uniformity, easy clogging of the filtration part, and insufficient sample collection.

[0007] To address these issues, we propose a molecular biology experimental grinding device. Summary of the Invention

[0008] The purpose of this invention is to solve the problems of cumbersome operation, low processing efficiency, unstable grinding effect, easy clogging of filter structure and poor sample collection integrity in the pretreatment of molecular biology experimental materials in the existing technology. The invention proposes a molecular biology experimental grinding device to realize continuous crushing and grinding, smooth filtration and efficient collection of experimental materials.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: A molecular biology experimental grinding device includes a bottom shell, a collection hopper at the top of the bottom shell connected to three support rods and located below a grinding box, and a grinding structure at the top of the collection hopper. The grinding structure includes a grinding box, and a base plate is connected to the bottom of the grinding box. A filter box is provided in the grinding box through an opening A and placed at an opening B on the base plate. A stop block is connected to the base plate to limit the filter box, allowing it to be inserted into a suitable position. The bottom of the filter box has filter holes for filtering the ground material falling into the filter box. A discharge port is provided at the top of the grinding box. The grinding structure also includes a grinding element located at the top of the grinding box and a drive rod penetrating the grinding box. The drive rod is driven to rotate by a drive device. The grinding element includes a connecting plate sleeved on the drive rod, and a concave rod is connected to the outside of the connecting plate. A grinding cylinder is rotatably connected to the concave rod, and a scraper is connected to the concave rod near the connecting plate. The scraper is not straight but curved to facilitate pushing and pressing the ground material to the discharge port.

[0010] When the drive unit starts, it drives the drive rod to rotate. The drive rod drives the crushing blade and the grinding workpiece to rotate. The crushing blade performs crushing work in the crushing hopper. When the grinding workpiece rotates with the drive rod, the grinding cylinder in the concave rod rolls on the top of the grinding box and grinds the crushed experimental material falling from the feed tray. At the same time, during the grinding process, the scraper can scrape the experimental material ground on the top of the grinding box to the feed port and fall into the filter box.

[0011] As a further aspect of the present invention, the grinding structure has a feeding structure, which includes a cover and a support frame inside the cover. The support frame includes a three-pronged rod and a support rod, with the support rod connected to the end of the three-pronged rod. A feeding trough is rotatably connected to the three-pronged rod and located at the top of the grinding box. The three-pronged rod also has a baffle located on the outer arc of the feeding trough. A motor is mounted on the feeding trough and connected to the three-pronged rod. When the motor is started, it can drive the feeding trough to rotate. The rotation of the feeding trough can cause the crushed material falling into the trough to fall down intermittently.

[0012] As a further aspect of this invention, the top of the casing is provided with a crushing structure, which includes a crushing hopper connected to the top of the casing via a flange, and a top cover connected to the top of the crushing hopper. The top cover has a connected hopper for pouring experimental materials to be ground into the crushing hopper. The bottom of the crushing hopper has a drain hole, and the inside of the crushing hopper contains a filter screen fitted onto a drive rod. The bottom of the filter screen has a cleaning blade. The crushing structure also includes a crushing blade connected to the drive rod and located above the filter screen. When the drive device operates, it drives the drive rod to rotate, which in turn drives the crushing blade to rotate and crush the experimental materials falling into the crushing hopper. During the crushing process, materials that do not meet the standards are crushed on the filter screen, while materials that meet the standards fall through the filter screen to the bottom of the crushing hopper. At the same time, the drive rod drives the filter screen to rotate, and the cleaning blade at the bottom of the filter screen scrapes the crushed experimental materials at the bottom of the crushing hopper to the drain hole and then falls down.

[0013] As a further feature of this invention, the feeding tray is located below the crushing hopper, and the feeding tray corresponds to the drain hole. The bottom of the crushing hopper is a cone shape that bulges upward, which makes it convenient to collect the crushed experimental material into a circle, making it easy for the cleaning blade to scrape it.

[0014] As a further part of the present invention, the bottom shell is provided with an opening C and an opening D, and a collection box is provided in the bottom shell through the opening D. The top and bottom of the opening C are provided with snap-fit ​​openings, and the collection box can collect the ground experimental materials that fall from the collection hopper.

[0015] As a further aspect of the present invention, the filter box is located below the grinding box, and the top of the filter box corresponds to the feeding port to facilitate receiving the ground experimental material falling from the feeding port. The filter box has a T-shaped positioning rod that rotates on its exterior. When the filter box is pushed into the grinding box and contacts the stop block, the positioning rod is rotated so that the two ends of the positioning rod in opposite directions engage with the latch, thus confining the filter box within the grinding box.

[0016] As a further aspect of the present invention, the filter box is provided with an anti-clogging component. The anti-clogging component includes a cam sleeved on the drive rod. The anti-clogging component includes a movable rod penetrating the filter box, with one end of the movable rod located inside the filter box and connected to an anti-clogging rake. A movable wheel is rotatably connected to the other end of the movable rod and located outside the filter box. A baffle and a spring are sleeved on the movable rod and located outside the filter box. The spring is located between the filter box and the baffle, with one end of the spring pressing against the filter box and the other end pressing against the baffle. Under normal conditions, under the expansion force of the spring, the anti-clogging rake approaches... The inner wall of the filter box, the baffle and the movable wheel are far away from the outer wall of the filter box. When the drive rod drives the cam to rotate, the convex part of the cam contacts the movable wheel and further squeezes the movable wheel, so that the movable rod is pushed into the filter box. At the same time, the anti-clogging rake moves inside the filter box, and the anti-clogging rake can also rake the ground test material that falls into the filter box into the collection hopper. Among them, the ground material that does not meet the standard remains in the filter box. Then the locking restriction of the positioning rod is released, and the filter box is pulled out to return to the crushing structure for re-crushing and grinding.

[0017] As a further part of the present invention, the collecting hopper has an opening C that is connected to and corresponds to openings B and A, for the filter box to pass through.

[0018] As a further part of the present invention, a scraping component is connected to the drive rod and located in the collection hopper. When the drive rod drives the scraping component to rotate, it can scrape the material on the inner wall of the collection hopper.

[0019] Compared with existing technologies, the advantages of this molecular biology experimental grinding device are at least as follows: 1. It realizes integrated continuous processing of experimental materials for crushing, feeding, grinding, filtering and collection, which improves the efficiency of experimental pretreatment. Through the coordinated design of crushing structure, feeding structure, grinding structure, filter box, collection hopper and collection box, the experimental materials can be crushed, fed at intervals, rolled and ground, filtered and classified and collected in sequence. This reduces the process of repeatedly transferring materials in traditional step-by-step operations, which not only helps to shorten the pretreatment time of molecular biology experimental samples, but also helps to improve the continuity and convenience of the overall operation.

[0020] 2. It can process experimental materials step by step and improve the uniformity of grinding, which is conducive to ensuring the consistency of particle size of the processed materials. Through the cooperation of the crushing blades and the filter screen in the crushing hopper, the experimental materials are first pre-crushed and sieved. Then, the crushed materials are transferred to the grinding box through the feeding tray at intervals. The grinding cylinder further rolls and grinds the materials. With the help of the scraper, the ground materials are pushed to the feeding port and enter the filter box. This forms a processing path of crushing first, then quantitative feeding, and then fine grinding, which is conducive to improving the fullness and uniformity of material grinding and avoiding the impact of material accumulation on the grinding effect.

[0021] 3. It has good anti-clogging and reprocessing capabilities, which helps improve the stability of the equipment operation. The anti-clogging component is set in the filter box. Through the cooperation of the cam, movable rod, movable wheel, anti-clogging rake, baffle and spring, the rotation of the drive rod can synchronously drive the anti-clogging rake to rake and guide the ground material falling into the filter box, reducing the clogging of the filter holes. For the material that does not meet the requirements and remains in the filter box, the filter box can be pulled out and sent back to the crushing structure for further processing, which helps to improve the stability of continuous operation of the equipment and the material utilization rate.

[0022] 4. The filter box is easy to install, remove, and position, which is beneficial for equipment maintenance and the classification and processing of experimental materials. Through the combination of the stop block, the bayonet at the opening C, and the positioning rod on the outside of the filter box, the filter box can be quickly inserted, limited, and locked in the grinding box. This not only facilitates the disassembly, cleaning, and replacement of the filter box, but also allows the experimenters to take out and observe materials at different processing stages separately, thereby improving the practicality of the device.

[0023] 5. It can reduce material residue and improve collection efficiency; a cleaning blade is set at the bottom of the filter screen, a scraper is set in the collection hopper, and the bottom of the crushing hopper adopts an upward convex conical structure, so that the crushed material is more easily gathered and swept to the drain hole. At the same time, the material attached to the inner wall of the collection is scraped, thereby reducing the retention and residue of experimental materials in the device and improving the integrity of sample collection. Attached Figure Description

[0024] Figure 1 This is an overall diagram of a molecular biology experimental grinding device proposed in this invention; Figure 2 for Figure 1 A breakdown diagram of the crushing and feeding structures; Figure 3 for Figure 2 Exploded view of the pulverized structure; Figure 4 for Figure 3 A diagram showing the disassembled parts of the crushing hopper and filter screen; Figure 5 for Figure 4 A structural diagram viewed from below; Figure 6 for Figure 2 Layout diagram of the middle and lower material structure and the bottom shell; Figure 7 for Figure 6 Schematic diagram of the middle and lower material feeding structure; Figure 8 for Figure 7 Layout diagram of the feeding and grinding structure; Figure 9 for Figure 8A schematic diagram of the grinding structure viewed from below; Figure 10 for Figure 9 A disassembled diagram of the middle filter box and the grinding box; Figure 11 for Figure 10 Structural diagram of the mid-chassis and cam; Figure 12 for Figure 10 A disassembled diagram of the anti-clogging component and the filter box.

[0025] In the diagram: 1. Crushing structure; 11. Top cover; 12. Crushing hopper; 121. Leakage hole; 13. Filter screen; 131. Cleaning blade; 14. Crushing knife; 2. Feeding structure; 21. Cover; 22. Three-pronged rod; 23. Support rod; 24. Feeding tray; 25. Baffle; 26. Motor; 3. Grinding structure; 31. Grinding box; 311. Feeding port; 312. Opening A; 32. Base; 321. Opening B; 322. Baffle; 33. 331. Grinding component; 332. Connecting disc; 333. Concave rod; 333. Grinding cylinder; 34. Scraper; 35. Drive rod; 4. Filter box; 41. Positioning rod; 42. Anti-clogging component; 421. Movable rod; 422. Spring; 423. Baffle plate; 424. Movable wheel; 425. Anti-clogging rake; 43. Convex disc; 5. Collection hopper; 51. Opening C; 52. Cleaning scraper; 6. Bottom shell; 61. Opening C; 62. Opening D; 63. Collection box. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should all fall within the protection scope of the present invention.

[0027] See attached document Figure 1 To be continued Figure 12 A molecular biology experimental grinding device includes a bottom shell 6, with a collection hopper 5 located at the top inside the bottom shell 6. The collection hopper 5 is connected to three support rods 23 and located below the grinding box 31. A grinding structure 3 is located above the collection hopper 5, a feeding structure 2 is located above the grinding structure 3, and a crushing structure 1 is located above the feeding structure 2. Thus, the device forms a continuous processing path from top to bottom, consisting of crushing, feeding, grinding, filtering, and collecting, enabling experimental materials to undergo pre-crushing, intermittent feeding, further grinding, filtration, and collection in sequence along the vertical direction.

[0028] Specifically, the grinding structure 3 includes a grinding box 31, with a base 32 connected to the bottom of the grinding box 31. A filter box 4 is disposed in the grinding box 31 through an opening A312. The filter box 4 is positioned at an opening B321 on the base 32. A stop block 322 is connected to the base 32 to limit the filter box 4 so that it is installed in a predetermined working position. A discharge port 311 is provided at the top of the grinding box 31 to receive the ground experimental material. The grinding structure 3 also includes a grinding element 33 located at the top of the grinding box 31 and a drive rod 35 penetrating the grinding box 31. The drive rod 35 is driven to rotate by a drive device.

[0029] The grinding component 33 includes a connecting disk 331 sleeved on the drive rod 35. A concave rod 332 is connected to the outside of the connecting disk 331. A grinding cylinder 333 is rotatably connected in the concave rod 332. A scraper 34 is connected to the concave rod 332 near the connecting disk 331. Preferably, the scraper 34 has an arc-shaped structure so as to push the experimental material at the top of the grinding box 31 towards the lower feed port 311 during the rotation of the grinding component 33.

[0030] The feeding structure 2 is positioned above the grinding structure 3. The feeding structure 2 includes a cover 21, within which a support frame is provided. The support frame includes a three-pronged rod 22 and a support rod 23. The support rod 23 is connected to the ends of the three-pronged rod 22. A feeding tray 24 is rotatably connected to the three-pronged rod 22, located at the top of the grinding box 31. A baffle 25 is also provided on the three-pronged rod 22, located on the outer arc of the feeding tray 24, for guiding and limiting the material in the feeding tray 24. A motor 26 is provided on the feeding tray 24 and connected to the three-pronged rod 22. After the motor 26 starts, it drives the feeding tray 24 to rotate, allowing the material falling into the feeding tray 24 to intermittently fall into the grinding structure 3 below. Through the intermittent feeding action of the feeding tray 24, a large amount of material can be prevented from entering the grinding box 31 at once, thus avoiding accumulation and improving the uniformity and continuity of the subsequent grinding process.

[0031] The crushing structure 1 is located on the top of the casing 21. The crushing structure 1 includes a crushing hopper 12 connected to the top of the casing 21 via a flange. A top cover 11 is connected to the top of the crushing hopper 12, and a hopper communicating with the crushing hopper 12 is provided on the top cover 11. Experimenters can feed experimental materials to be processed into the crushing hopper 12 through the hopper. A drain hole 121 is provided at the bottom of the crushing hopper 12. A filter screen 13 is provided inside the crushing hopper 12, and the filter screen 13 is sleeved on the drive rod 35. A cleaning blade 131 is provided at the bottom of the filter screen 13. The crushing structure 1 also includes a crushing blade 14 connected to the drive rod 35, located above the filter screen 13. Preferably, the feeding tray 24 is located below the crushing hopper 12 and corresponding to the drain hole 121. The bottom of the crushing hopper 12 has an upwardly convex conical structure, so that the material falling through the filter screen 13 gathers along the bottom of the crushing hopper 12 and is easily scraped and conveyed to the drain hole 121 by the cleaning blade 131.

[0032] The bottom shell 6 has openings C61 and D62. A collection box 63 is installed in the bottom shell 6 through opening D62. The collection box 63 is used to receive the ground experimental material falling from the collection hopper 5. The top and bottom of opening C61 have latches for engaging with the positioning rod 41 on the outside of the filter box 4 to limit the installation of the filter box 4. The collection hopper 5 has an opening C51, which corresponds to and communicates with openings B321 and A312, allowing the filter box 4 to pass through and be installed in the working position. A scraper 52 is connected to the drive rod 35 and is located in the collection hopper 5. When the drive rod 35 rotates, the scraper 52 rotates synchronously and scrapes the experimental material adhering to the inner wall of the collection hopper 5 to reduce material residue and improve collection integrity.

[0033] The filter box 4 is located below the grinding box 31, and the top of the filter box 4 corresponds to the feed port 311 to receive the ground experimental material falling from the feed port 311. The filter box 4 is rotatably connected to a T-shaped positioning rod 41. During installation, the filter box 4 is pushed into the grinding box 31 through the opening C51 on the collecting hopper 5, the opening B321 on the base plate 32, and the opening A312 on the grinding box 31 until the filter box 4 contacts the stop block 322 and reaches the predetermined limit position. Then, the positioning rod 41 is rotated so that the two ends of the positioning rod 41 in opposite directions are engaged with the latches at the opening C61, thereby stably restricting the filter box 4 in the grinding box 31 and preventing displacement during operation. When it is necessary to clean, inspect, or remove the material in the filter box 4, it is only necessary to rotate the positioning rod 41 in the opposite direction to release the latches and then pull out the filter box 4. The operation is relatively convenient.

[0034] The filter box 4 is provided with an anti-clogging component 42. The anti-clogging component 42 includes a cam 43 sleeved on the drive rod 35 and a movable rod 421 that passes through the filter box 4. One end of the movable rod 421 is located in the filter box 4 and connected to an anti-clogging rake 425. The other end is located outside the filter box 4 and rotatably connected to a movable wheel 424. A baffle 423 and a spring 422 are sleeved on the movable rod 421. The spring 422 is located between the filter box 4 and the baffle 423. Under normal conditions, under the elastic force of the spring 422, the anti-clogging rake 425 is close to the inner wall of the filter box 4, and the movable wheel 424 and the baffle 423 are kept away from the outer wall of the filter box 4. When the drive rod 35 drives the cam 43 to rotate, the protruding part of the cam 43 periodically contacts and squeezes the movable wheel 424, thereby pushing the movable rod 421 to move into the filter box 4, causing the anti-clogging rake 425 to reciprocate or move intermittently inside the filter box 4. With this structure, the anti-clogging rake 425 can rake and guide the ground experimental material falling into the filter box 4, allowing the qualified material to pass smoothly through the filter holes and fall into the collection hopper 5, reducing the clogging of the filter holes; For materials that do not meet the requirements after grinding and remain in the filter box 4, the filter box 4 can be removed after the equipment is stopped, and the material can be sent back to the crushing structure 1 for further processing, thereby improving the material utilization rate and the stability of the equipment operation.

[0035] The working process of this embodiment is as follows: The experimenter first opens the top cover 11 or puts the plant tissue, animal tissue, fungal sample or other experimental materials to be processed into the crushing hopper 12 through the hopper, and then starts the drive device and motor 26. After the drive device is started, it drives the drive rod 35 to rotate. The drive rod 35 first drives the crushing blade 14 to pre-crush the experimental materials in the crushing hopper 12. The experimental materials with larger particle size are temporarily retained above the filter screen 13 to continue to be crushed, while the experimental materials with the required particle size fall to the bottom of the crushing hopper 12 through the filter screen 13. Since the bottom of the crushing hopper 12 adopts an upward convex conical structure, the falling experimental materials are more likely to converge circumferentially. Then, the cleaning blade 131, which rotates with the drive rod 35, scrapes and sends them to the drain hole 121 and falls downward into the feeding tray 24.

[0036] The experimental materials entering the feeding tray 24 are rotated by the motor 26 and fall intermittently to the top area of ​​the grinding box 31. Since the materials do not fall all at once, but enter the grinding area in batches, the instantaneous load on the grinding parts 33 can be reduced and accumulation can be minimized. At this time, the drive rod 35 continues to drive the connecting plate 331 and the concave rod 332 to rotate. The grinding cylinder 333 in the concave rod 332 rolls on the top of the grinding box 31 to further grind the falling experimental materials. At the same time, the scraper 34 moves with the grinding parts 33, gradually pushing the ground experimental materials to the feeding port 311. The experimental materials falling through the feeding port 311 enter the filter box 4 below. The experimental materials that meet the requirements then fall through the filter holes at the bottom of the filter box 4 into the collection hopper 5, and finally enter the collection box 63 for collection.

[0037] During the filtration process, if material tends to accumulate in the filter box 4, the drive rod 35 synchronously drives the cam 43 to rotate. The contact and squeezing action between the cam 43 and the movable wheel 424 drives the movable rod 421 to move, thereby driving the anti-blocking rake 425 to move inside the filter box 4, rake and guide the ground material, so that it falls more smoothly into the collection hopper 5. If some experimental material remains in the filter box 4 due to its large particle size or unsuitable state, the positioning rod 41 can be rotated to release the jamming after the machine is stopped, the filter box 4 can be taken out, and the material can be put back into the crushing hopper 12 for further crushing and grinding. During the collection process, the cleaning scraper 52 located in the collection hopper 5 rotates synchronously with the drive rod 35, which can scrape the experimental material attached to the inner wall of the collection hopper 5 into the collection box 63 to reduce residue.

[0038] In this embodiment, the crushing structure 1, the feeding structure 2, the grinding structure 3, the filter box 4, the collecting hopper 5, and the collecting box 63 are arranged in sequence to enable the experimental materials to complete the integrated continuous processing of pre-crushing, intermittent feeding, rolling grinding, filtration anti-clogging, and finished product collection. Compared with devices that only have a single crushing or grinding function, this embodiment can reduce the transfer process of experimental materials between different processing devices and improve pre-treatment efficiency. At the same time, through the intermittent feeding action of the feeding tray 24, the rolling grinding action of the grinding cylinder 333, and the guiding action of the anti-clogging component 42, it is beneficial to improve the grinding uniformity, filtration smoothness, and collection integrity of the experimental materials.

[0039] It should be noted that the above embodiments are merely preferred embodiments of the present invention, used to illustrate the technical solution of the present invention, and are not intended to limit the scope of protection of the present invention. Equivalent substitutions or changes made by those skilled in the art, based on the teachings of the present invention, to its structural form, connection method, or partial components should all fall within the scope of protection of the present invention.

Claims

1. A molecular biology experimental grinding device, characterized in that, The device includes a bottom shell (6), with a collection hopper (5) at the top inside the bottom shell (6). The collection hopper (5) is connected to three support rods (23) and located below the grinding box (31). A grinding structure (3) is provided at the top inside the collection hopper (5). The grinding structure (3) includes a grinding box (31), and a base plate (32) is connected to the bottom of the grinding box (31). A filter box (4) is provided in the grinding box (31) through an opening A (312) and placed at an opening B (321) on the base plate (32). A stop block (322) is connected to the base plate (32) and used to limit the filter box (4). The bottom of the filter box (4) is provided with... The grinding box (31) has a filter hole and a feeding port (311) at the top. The grinding structure (3) also includes a grinding component (33) located at the top of the grinding box (31) and a drive rod (35) that passes through the grinding box (31). The drive rod (35) is driven to rotate by a drive device. The grinding component (33) includes a connecting plate (331) sleeved on the drive rod (35), and a concave rod (332) is connected to the outside of the connecting plate (331). A grinding cylinder (333) is rotatably connected in the concave rod (332), and a scraper (34) is connected to the concave rod (332) near the connecting plate (331).

2. The molecular biology experimental grinding device according to claim 1, characterized in that, The grinding structure (3) is provided with a feeding structure (2), which includes a cover (21) and a support frame in the cover (21). The support frame includes a three-headed rod (22) and a support rod (23). The support rod (23) is connected to the end of the three-headed rod (22). The feeding tray (24) is rotatably connected in the three-headed rod (22) and is located on the top of the grinding box (31). The three-headed rod (22) is also provided with a baffle (25) and is located on the outer arc of the feeding tray (24). The feeding tray (24) is provided with a motor (26) and is connected to the three-headed rod (22). The motor (26) starts and drives the feeding tray (24) to rotate so that the material falling into the feeding tray (24) drops intermittently.

3. The molecular biology experimental grinding device according to claim 2, characterized in that, The top of the cover (21) is provided with a crushing structure (1). The crushing structure (1) includes a crushing bucket (12) connected to the top of the cover (21) by a flange. The top of the crushing bucket (12) is connected with a top cover (11). The top cover (11) is provided with a hopper that communicates with the crushing bucket (12). Experimental materials are poured into the crushing bucket (12) through the hopper. The bottom of the crushing bucket (12) is provided with a leakage hole (121). The crushing bucket (12) is provided with a filter screen (13) inside and is sleeved on the drive rod (35). The bottom of the filter screen (13) is provided with a cleaning plate (131). The crushing structure (1) also includes a crushing blade (14) connected to the drive rod (35) and located above the filter screen (13).

4. The molecular biology experimental grinding device according to claim 3, characterized in that, The feeding tray (24) is located below the crushing hopper (12), and the feeding tray (24) corresponds to the drain hole (121). The bottom of the crushing hopper (12) is a cone shape that bulges upward.

5. The molecular biology experimental grinding device according to claim 1, characterized in that, The bottom shell (6) has an opening C (61) and an opening D (62), and a collection box (63) is provided in the bottom shell (6) through the opening D (62). The top and bottom of the opening C (61) are both provided with slots.

6. The molecular biology experimental grinding device according to claim 5, characterized in that, The filter box (4) is located below the grinding box (31), and the top of the filter box (4) corresponds to the feed port (311) to receive the ground experimental material falling from the feed port (311). A T-shaped positioning rod (41) is rotatably connected to the outside of the filter box (4).

7. A molecular biology experimental grinding device according to claim 6, characterized in that, The filter box (4) is provided with an anti-clogging component (42). The anti-clogging component (42) includes a cam (43) sleeved on the drive rod (35). The anti-clogging component (42) also includes a movable rod (421) that passes through the filter box (4). One end of the movable rod (421) is located in the filter box (4) and connected to an anti-clogging rake (425). The other end of the movable rod (421) is rotatably connected to a movable wheel (424) and located outside the filter box (4). A baffle (423) and a spring (422) are sleeved on the movable rod (421) and located outside the filter box (4). The spring (422) is located between the filter box (4) and the baffle (423). One end of the spring (422) pushes against the filter box (4) and the other end pushes against the baffle (423).

8. The molecular biology experimental grinding device according to claim 1, characterized in that, The collection hopper (5) is provided with an opening C (51), and the opening C (51) is connected to the opening B (321) and the opening A (312) respectively, for the filter box (4) to pass through.

9. A molecular biology experimental grinding device according to claim 1, characterized in that, A cleaning component (52) is connected to the drive rod (35), and the cleaning component (52) is located in the collection hopper (5).

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