CN112844565B

CN112844565B - Biological assay material grinder

Info

Publication number: CN112844565B
Application number: CN202110118375.8A
Authority: CN
Inventors: 王娟; 李春娟; 单世华; 郑奕雄; 闫彩霞; 赵小波
Original assignee: Shandong Peanut Research Institute
Current assignee: Shandong Peanut Research Institute
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2022-12-23
Anticipated expiration: 2041-01-28
Also published as: CN112844565A

Abstract

The invention relates to a grinding device, in particular to a grinding device for biological experimental materials. The grinding of the biological experiment materials, the intermittent blanking of the hopper, the screening of the biological experiment materials on the screen and the stirring of the biological experiment materials in the hopper can be simultaneously realized by starting the motor which is a power source, so that the time and the labor are saved, and the cost is saved; when the first roller and the second roller grind the biological experiment materials, the hopper carries out intermittent blanking under the action of the humanoid plate, so that the biological experiment materials are ground fully; the shifting rod intermittently shifts the stop block so as to drive the sieve to sieve the biological experiment materials which fall into the sieve and are ground by the first roller and the second roller under the action of the second spring; pulling the stripper will be stayed on the sieve and not push into the second bucket the abundant biological assay material of grinding yet, through pulling down the second bucket and pour its inside assay material into the hopper and grind again to it is more abundant to make the grinding.

Description

Biological assay material grinder

Technical Field

The invention relates to a grinding device, in particular to a grinding device for biological experimental materials.

Background

Biological experiments refer to the process of purposefully observing and researching the phenomena of biological structures and life activities which are difficult to observe under general conditions by applying certain instruments, materials and medicines under specific environmental conditions through a scientific method, the experimental materials need to be ground when partial biological experiments are carried out, the grinding of the experimental materials is carried out manually, the grinding is easy to cause insufficient grinding and time and labor waste, and therefore how to provide a grinding device for the biological experimental materials, which is sufficient in grinding, time-saving and labor-saving, is a technical problem to be solved urgently by technical personnel in the field.

Disclosure of Invention

Therefore, the technical problems to be solved by the invention are as follows: how to provide a biological experiment material grinding device which can grind fully and save time and labor.

In order to achieve the above purpose, the invention provides a grinding device for biological experimental materials, comprising a hopper, wherein the hopper is fixed on an upper cover, the upper cover is arranged at the upper end of a shell, a motor is fixedly arranged at the outer end of the left side wall of the shell, the motor is connected with a first roller shaft through a coupling, a first roller is fixedly arranged on the first roller shaft, two ends of the first roller shaft are arranged on the shell, the first roller is matched with a second roller, the second roller is fixedly arranged on a second roller shaft, two ends of the second roller shaft are arranged on the shell, driving gears are symmetrically arranged on the first roller shaft, driven gears matched with the driving gears are symmetrically arranged on the second roller shaft, cams are symmetrically arranged on the second roller shaft, the cams are matched with a T-shaped rod, the upper end of the T-shaped rod is fixedly connected with a human-shaped plate, the lower end of the T-shaped rod is slidably connected with a first support seat, the human-shaped plate is inserted into a horizontal groove of the hopper, the rear end of the T-shaped rod is slidably connected with a sleeve, a first spring is sleeved on the T-shaped rod, a support seat is fixedly arranged on the second roller shaft, two vertical support seats are respectively arranged on the second roller shaft, two vertical support seats, two belt pulley support seats are respectively arranged on the second roller shaft, two belt pulley support seats, two vertical support seats, two belt pulley support seats are arranged on the vertical support seats, the epaxial fixed mounting driving lever of first roller, first roller with the first bucket of second roller below installation, first bucket is inside through second spring mounting sieve, sieve outside installation stripper, upper end installation dog, the lateral surface of dog is followed for inclined plane and inclined plane the center of sieve leans out, first bucket outside installation second bucket, the casing right side wall sets up the casing breach, first bucket is close to casing breach one side-mounting has the closing cap of closing cap handle.

Preferably, a first scraper is arranged below the first roller, a second scraper is arranged below the second roller, the upper end of the first scraper is fixed on the upper cover, the lower end of the second scraper is fixed on the shell, and the first scraper is provided with a visual window.

Preferably, the second barrel is symmetrically provided with connecting plates at two sides, the inner side surfaces of the connecting plates are provided with protrusions, and the first barrel is symmetrically provided with grooves matched with the protrusions at two sides.

Preferably, the (mixing) shaft includes the (mixing) shaft main part, the central point of (mixing) shaft main part puts the equipartition stirring body, the stirring body is located in the hopper just the stirring body is including two side poles that the symmetry set up, install well core rod of encrypting the pole, the side pole with well core rod is all fixed just parallel arrangement in the (mixing) shaft main part, encrypt the pole with well core rod sets up perpendicularly.

Preferably, the humanoid plate wholly is symmetrical structure, including inserting semicircle board and the rectangular plate in the hopper, two swash plates are installed to rectangular plate one end symmetry, install square board on the swash plate.

Preferably, the T-shaped rod comprises a vertical rod attached to the cam, one end of the vertical rod is fixedly connected with the horizontal rod, one end of the horizontal rod is fixedly connected with the cylindrical head, the cylindrical head is inserted into the sleeve and can slide in the sleeve, and the outer side of the horizontal rod is sleeved with the first spring.

Preferably, the contour line of the cam is sequentially defined by a first arc, a first curve segment, a second arc and a second curve segment, the symmetry axis of the first arc coincides with the symmetry axis of the second arc, the first curve segment and the second curve segment are symmetrically arranged, the central angle corresponding to the first arc is 90 °, the central angle corresponding to the first curve segment is 120 °, the central angle corresponding to the second arc is 30 °, and the central angle corresponding to the second curve segment is 120 °.

Preferably, the discharge plate comprises a baffle connected with the sieve, two connecting rods are symmetrically arranged on the baffle, push plates are arranged on the two connecting rods, and push plate handles are arranged on the baffle.

The invention has the following advantages:

(1) The grinding of biological experiment materials, the intermittent blanking of the hopper, the screening of the biological experiment materials on the screen and the stirring of the biological experiment materials in the hopper can be simultaneously realized by starting the motor which is a power source, thereby saving time, labor and cost.

(2) The biological experimental materials stuck on the first roller and the second roller during grinding are respectively scraped by the first scraper and the second scraper so as to avoid influencing the grinding effect of the first roller and the second roller; first scraper blade can scrape first roller and shelter from the space of first roller, second roller top again, reduces external pollution, and the blanking of hopper and the live of grinding of first roller, second roller are convenient for observe to the visual window that sets up on the first scraper blade.

(3) When the first roller and the second roller grind the biological experiment materials, the hopper carries out intermittent blanking under the action of the human-shaped plate, so that the biological experiment materials can be ground fully.

(4) When the vertical rod is contacted with the first arc, the humanoid plate completely blocks the hopper, and the hopper does not discharge materials; in the process that the vertical rod is gradually contacted with the first curve section, the hopper is gradually opened by the humanoid plate; when the vertical rod is contacted with the second arc, the humanoid plate does not block the hopper, and the opening degree of the hopper is maximum at the moment; in the process that the vertical rod is gradually contacted with the second curve section by means of the elastic force of the first spring, the hopper is gradually closed by the humanoid plate, so that intermittent blanking of the hopper is realized, and the grinding is more sufficient.

(5) The stirring shaft is provided with a side rod, a central rod and an encryption rod, so that the looseness of the experimental material to be ground is increased, and the blanking is facilitated;

(6) The shifting rod intermittently shifts the stop block so as to drive the sieve to sieve the biological experiment materials which fall into the sieve and are ground by the first roller and the second roller under the action of the second spring; pulling the stripper will be stayed on the sieve and the biological experimental material that has not ground fully pushes into the second bucket in, through pull down the second bucket and pour its inside experimental material into the hopper and grind again to it is more abundant to make to grind.

Drawings

FIG. 1: the invention relates to a schematic overall structure diagram of a grinding device for biological experimental materials;

FIG. 2 is a schematic diagram: the side view structure schematic diagram of the grinding device for the biological experiment material is disclosed;

FIG. 3: the internal structure schematic diagram of the grinding device for the biological experimental material is disclosed;

FIG. 4 is a schematic view of: the invention relates to a first side view schematic diagram of an internal structure of a grinding device for biological experimental materials;

FIG. 5: the invention relates to a second side view schematic diagram of the internal structure of a grinding device for biological experimental materials;

FIG. 6: the invention discloses a biological experimental material grinding device, which is characterized in that the internal structure of the grinding device is schematically viewed from above;

FIG. 7 is a schematic view of: the invention relates to a structural schematic diagram of a first barrel of a grinding device for biological experimental materials;

FIG. 8: the invention relates to a stirring shaft structure schematic diagram of a biological experimental material grinding device;

FIG. 9: the invention discloses a structural schematic diagram of a second scraper of a grinding device for biological experimental materials;

FIG. 10: the invention relates to a human-shaped plate structure schematic diagram of a grinding device for biological experimental materials;

FIG. 11: the invention relates to a structural schematic diagram of a T-shaped rod of a grinding device for biological experimental materials;

FIG. 12: the invention relates to a structural schematic diagram of a stripper plate of a grinding device for biological experimental materials;

FIG. 13: the invention discloses a cam profile structure schematic diagram of a biological experimental material grinding device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The terms "first," "second," and the like in the description and claims of the present invention and in the foregoing description and drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The invention is further illustrated by the following figures and examples:

as shown in fig. 1 to 6, the grinding device for biological experimental materials of the present invention comprises a hopper 1, wherein the upper half of the hopper 1 is in the shape of a hollow circular truncated cone, and the lower half of the hopper 1 is in the shape of a hollow cylinder; the hopper 1 is fixed on the upper cover 8, the upper cover 8 is installed at the upper end of the shell 9, the rear wall of the shell 9 is detachable and made of transparent materials, and the interior of the shell 9 can be conveniently cleaned and observed; a motor 7 is fixedly installed at the outer end of the left side wall of the shell 9, the motor 7 is connected with a first roller shaft 4 through a coupler 6, a first roller 2 is fixedly installed on the first roller shaft 4, two ends of the first roller shaft 4 are installed on the shell 9, the first roller 2 is matched with a second roller 3, the first roller 2 and the second roller 3 are identical in structural size, and the hopper 1 is located above the center positions of the first roller 2 and the second roller 3; the second roller 3 is fixedly arranged on a second roller shaft 5, two ends of the second roller shaft 5 are arranged on the shell 9, driving gears 35 are symmetrically arranged on the first roller shaft 4, driven gears 36 matched with the driving gears 35 are symmetrically arranged on the second roller shaft 5, cams 34 are symmetrically arranged on the second roller shaft 5, and the cams 34 are positioned on the outer sides of the driven gears 36; the cam 34 is matched with the T-shaped rod 18, the upper end of the T-shaped rod 18 is fixedly connected with the humanoid plate 17, the lower end of the T-shaped rod is connected with the first support 19 in a sliding mode, the humanoid plate 17 is inserted into a horizontal groove of the hopper 1, the rear end of the T-shaped rod 18 is connected with the sleeve 21 in a sliding mode, the T-shaped rod 18 is sleeved with the first spring 20, the rear end of the sleeve 21 is provided with the end cover 22, the T-shaped rod 18 is limited, the front end of the sleeve 21 is fixed on the first support 19 through the L-shaped support 24, the rear end of the sleeve 21 is fixed on the second support 23, and the lower ends of the first support 19 and the second support 23 are fixed on the shell 9.

As shown in fig. 1 to 7, vertical support plates 32 are symmetrically fixed on the upper cover 8, two grooves at the lower end of the vertical support plates 32 respectively accommodate a first roller shaft 4 and a second roller shaft 5, a stirring shaft 10 is installed on the hopper 1, two ends of the stirring shaft 10 penetrate through the vertical support plates 32 and are installed on the housing 9, the vertical support plates 32 can play a role of supporting the stirring shaft 10 and can shield two sides of the first roller 2 and the second roller 3, biological experimental materials between the first roller 2 and the second roller 3 are effectively prevented from falling off, a first belt pulley 11 is fixedly installed on the second roller shaft 5, a second belt pulley 12 is fixedly installed on the stirring shaft 10, the first belt pulley 11 is connected with the second belt pulley 12 through a belt 13, a deflector rod 14 is fixedly installed on the first roller shaft 4, a first barrel 25 is installed below the first roller 2 and the second roller 3, a sieve 38 is installed inside the first barrel 25 through a second spring 39, the front side and the rear side of the screen 38 are provided with sliding strips, the inner wall of the first barrel 25 is provided with a sliding chute matched with the sliding strips, so that the screen 38 can only move along the length direction of the second spring 39, the fully ground materials screened by the screen 38 are prevented from falling into the second barrel 26, the outer side of the screen 38 is provided with the discharging plate 28, the upper end of the discharging plate is provided with the stop block 37, the outer side surface of the stop block 37 is an inclined surface, the inclined surface inclines outwards from the center of the screen 38, the shift lever 14 is firstly contacted with one end, close to the center of the screen 38, of the stop block 37 during rotation, the shift lever 14 gradually compresses the second spring 39 on one side of the screen 38 and stretches the second spring 39 on the other side of the screen 38 during the contact process with the stop block 37, after the shift lever 14 is separated from the stop block 37, the screen 38 is swung leftwards and rightwards to screen experimental materials thereon, the outer side of the first barrel 25 is provided with the second barrel 26, the connecting plates 27 are symmetrically arranged on two sides of the second barrel 26, the connecting plate 27 is provided with the inner side provided with the protrusions 40, first bucket 25 bilateral symmetry sets up recess 29 with protruding 40 complex, only needs to lift even board 27 and makes protruding 40 break away from recess 29 completely and can dismantle second bucket 26, and casing 9 right side wall sets up casing breach 901, and first bucket 25 is close to casing breach 901 one side installation and has the closing cap 30 of closing cap handle 31, opens closing cap 30 and takes out the biological experimental material in first bucket 25, and the bottom surface of first bucket 25 is the inclined plane, is convenient for take out biological experimental material.

As shown in fig. 1 to 9, a first scraper 15 is installed below the first roller 2, a second scraper 16 is installed below the second roller 3, biological experimental materials stuck to the first roller 2 and the second roller 3 during grinding are respectively scraped by the first scraper 15 and the second scraper 16 so as not to affect the grinding effect of the first roller 2 and the second roller 3, and the scraped experimental materials slide on the screen 38 along the slopes of the first scraper 15 and the second scraper 16; first scraper blade 15 upper end is fixed on upper cover 8, and first scraper blade 15 can scrape first roller 2 and can shelter from the space of first roller, second roller top again, reduces external pollution, and second scraper blade 16 lower extreme is fixed on casing 9, sets up visual window 33 on first scraper blade 15, is convenient for observe the blanking of hopper and the live thing of grinding of first roller, second roller.

As shown in fig. 1 to 8, the stirring shaft 10 includes a stirring shaft main body 1001, stirring bodies are uniformly distributed at the central position of the stirring shaft main body 1001, the number of the stirring bodies is preferably four, the stirring bodies are located in the hopper 1 and include two side rods 1002 symmetrically arranged and a central rod 1003 provided with a enciphering rod 1004, the central rod 1003 is located between the two side rods 1002, the side rods 1002 and the central rod 1003 are both fixed on the stirring shaft main body 1001 and arranged in parallel, the enciphering rod 1004 is arranged perpendicular to the central rod 1003, the number of the enciphering rods 1004 is preferably two, and the stirring shaft 10 is located above the mannequin 17 to avoid affecting the movement of the mannequin 17.

As shown in fig. 1 to 10, the humanoid plate 17 is a symmetrical structure integrally and comprises a semicircular plate 1704 and a rectangular plate 1703 inserted into the hopper 1, two inclined plates 1702 are symmetrically installed at one end of the rectangular plate 1703, a square plate 1701 is installed on the inclined plates 1702, the humanoid plate 17 consisting of the square plate 1701, the inclined plates 1702, the rectangular plate 1703 and the semicircular plate 1704 is preferably of an integral structure, the diameter of the semicircular plate 1704, the width of the rectangular plate 1703 and the inner diameter of the hopper 1 are equal, when the semicircular plate 1704 is completely attached to the inner wall of the hopper 1, the hopper 1 does not discharge materials, when the lower end of the hopper 1 is completely opened for discharging, the front end of the semicircular plate 1704 is in a horizontal groove of the hopper 1 and does not depart from the hopper 1, the humanoid plate 17 is conveniently inserted into the hopper 1 again, the first roller 2 and the second roller 3 grind the biological experimental materials, and the hopper 1 intermittently discharges materials under the action of the humanoid plate 17, so that the grinding is sufficient, and the square plate 1701 is provided with threaded holes so as to be conveniently fixed with the T-shaped rod 18.

As shown in fig. 1 to 13, a contour line of the cam 34 is sequentially enclosed by a first arc 3401, a first curve section 3402, a second arc 3403 and a second curve section 3404, a symmetry axis of the first arc 3401 is overlapped with a symmetry axis of the second arc 3403, the first curve section 3402 is symmetrically arranged with the second curve section 3404, a central angle corresponding to the first arc 3401 is 90 °, a central angle corresponding to the first curve section 3402 is 120 °, a central angle corresponding to the second arc 3403 is 30 °, a central angle corresponding to the second curve section 3404 is 120 °, the T-shaped bar 18 comprises a vertical bar 1801 attached to the cam 34, one end of the vertical bar 1801 is fixedly connected with a horizontal bar 1802, one end of the horizontal bar 1802 is fixedly connected with a cylindrical head 1803, the cylindrical head 1803 is inserted into the sleeve 21 and can slide in the sleeve 21, the diameter of the cylindrical head 1803 is larger than that of the horizontal bar 34, the first spring 20 is sleeved outside of the vertical bar 1802, when the vertical bar 3401 is in contact with the first arc 1801, the cylindrical head 1803 is inserted into the sleeve 21, the cylindrical head 1801 is completely seals the blanking hopper 1802, and the hopper 17, and the hopper is not in a state, and the hopper 1802 is in a state, the hopper 1802 is not stretched in which the hopper, the hopper 20; during the gradual contact of the vertical rod 1801 with the first curved section 3402, the anthropomorphic plate 17 gradually opens the hopper 1; when the vertical rod 1801 contacts with the second arc 3403, the humanoid plate 17 does not block the hopper 1, the opening degree of the hopper 1 is the largest at the moment, the cylindrical head 1803 is positioned at the leftmost end in the sleeve 21, and the first spring 20 is in the maximum compression state; the chevron plate 17 gradually closes the hopper 1 during the progressive contact of the vertical rod 1801 with the second curved section 3404 by virtue of the elastic force of the first spring 20.

As shown in fig. 1 to 12, the discharging plate 28 includes a baffle 2801 connected to the screen 38, two connecting rods 2802 are symmetrically installed on the baffle 2801, a pushing plate 2803 is installed on the two connecting rods 2802, a pushing plate handle 2804 is installed on the baffle 2801, the lower end faces of the connecting rods 2802 and the pushing plate 2803 are both in contact with the screen 38, the pushing plate 2803 is driven by pulling the handle 2804 with a hand to slide by the connecting rods 2802, biological experimental materials left on the screen 38 and not ground sufficiently are pushed into the second barrel 26, and then the discharging plate 28 is returned to its original position.

As shown in fig. 1 to 13, biological experimental materials to be ground are put into a hopper 1, a motor 7 is started, the motor 7 drives a first roller shaft 4 to drive a rotating first roller 2 to rotate, the first roller shaft 4 and a second roller shaft 5 rotate oppositely through the meshing of a driving gear 35 and a driven gear 36, so that the biological experimental materials falling between the first roller 2 and the second roller 3 are ground and ground by the first roller 2 and the second roller 3 rotating oppositely, the biological experimental materials stuck on the first roller 2 and the second roller 3 during grinding are respectively scraped by a first scraper 15 and a second scraper 16 so as to avoid influencing the grinding effect of the first roller 2 and the second roller 3, the scraped experimental materials slide down on a screen 38 along the slope of the first scraper 15 and the second scraper 16, the second roller shaft 5 rotates while driving a cam 34 to rotate, the cam 34 rotates while pushing a T-shaped rod 18 to move while driving a human-shaped plate 17 to slide in a horizontal groove of the hopper 1, so as to realize intermittent rotation of the hopper 1, the first roller shaft 5 rotates while the biological experimental materials to drive a grinding material falling through a stirring rod 12 and a grinding dog 38, so that the biological experimental materials to be ground and the biological materials falling through a grinding belt wheel 12 in the first roller 2 and a grinding belt wheel 12, the grinding rod 38, the grinding hopper 1, the biological experimental materials in the grinding hopper 1 can be ground and a grinding rod 14, and a grinding rod 12 can drive the biological experimental materials to be ground material grinding rod 2 to be ground and a grinding rod for grinding hopper to be ground material to be ground and a biological material to be ground in a screen The batch blanking of the hopper 1, the screening of the biological experimental materials on the screen 38 and the stirring of the biological experimental materials in the hopper 1 are realized, so that the time and the labor are saved, and the cost is saved.

After motor 7 is turned off and screen 38 is stationary, the unloading plate 28 is manually pulled to push the biological test material remaining on screen 38 and not sufficiently ground into second barrel 26, and the biological test material is again ground by removing second barrel 26 and pouring the test material therein into hopper 1.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a biological assay material grinder, includes the hopper, its characterized in that: the hopper is fixed on the upper cover, the upper cover is installed at the upper end of the shell, a motor is fixedly installed on the outer end of the left side wall of the shell, the motor is connected with a first roller shaft through a coupler, a first roller is fixedly installed on the first roller shaft, two ends of the first roller shaft are installed on the shell, the first roller is matched with a second roller, the second roller is fixedly installed on the second roller shaft, two ends of the second roller shaft are installed on the shell, driving gears are symmetrically installed on the first roller shaft, driven gears matched with the driving gears are symmetrically installed on the second roller shaft, cams are symmetrically installed on the second roller shaft, the cams are matched with a T-shaped rod, the upper end of the T-shaped rod is fixedly connected with a man-shaped plate, the lower end of the T-shaped rod is slidably connected with a first support, the man-shaped plate is inserted into a horizontal groove of the hopper, the rear end of the T-shaped rod is slidably connected with a sleeve, a first spring is sleeved on the T-shaped rod, an end cover is installed at the rear end of the sleeve, the front end of the sleeve is fixed on the first support, and the lower end of the second support is fixed on the shell; a vertical support plate is symmetrically fixed on the upper cover, two grooves at the lower end of the vertical support plate are used for accommodating the first roller shaft and the second roller shaft respectively, a stirring shaft is installed on the hopper, two ends of the stirring shaft penetrate through the vertical support plate and are installed on the shell, a first belt wheel is fixedly installed on the second roller shaft, a second belt wheel is fixedly installed on the stirring shaft, the first belt wheel is connected with the second belt wheel through a belt, a shifting rod is fixedly installed on the first roller shaft, a first barrel is installed below the first roller and the second roller, a sieve is installed in the first barrel through a second spring, a discharging plate is installed on the outer side of the sieve, a stop block is installed at the upper end of the first barrel, the outer side surface of the stop block is an inclined surface, the inclined surface inclines outwards from the center of the sieve, a second barrel is installed on the outer side of the first barrel, a shell notch is formed in the right side wall of the shell, and a sealing cover with a sealing cover handle is installed on one side, close to the shell notch; the human-shaped plate is of a symmetrical structure integrally and comprises a semi-circular plate and a rectangular plate which are inserted into the hopper, two inclined plates are symmetrically arranged at one end of the rectangular plate, and a square plate is arranged on each inclined plate; the T-shaped rod comprises a vertical rod attached to the cam, one end of the vertical rod is fixedly connected with a horizontal rod, one end of the horizontal rod is fixedly connected with a cylindrical head, the cylindrical head is inserted into the sleeve and can slide in the sleeve, and a first spring is sleeved on the outer side of the horizontal rod; the contour line of the cam is formed by sequentially enclosing a first arc, a first curve section, a second arc and a second curve section, the symmetry axis of the first arc is superposed with the symmetry axis of the second arc, the first curve section and the second curve section are symmetrically arranged, the central angle corresponding to the first arc is 90 degrees, the central angle corresponding to the first curve section is 120 degrees, the central angle corresponding to the second arc is 30 degrees, and the central angle corresponding to the second curve section is 120 degrees; the biological experimental material to be ground is put into the hopper, the motor is started, the motor drives the first roller shaft to rotate so as to drive the first roller to rotate, the first roller shaft and the second roller shaft rotate oppositely through the meshing of the driving gear and the driven gear so as to rotate oppositely and further realize that the first roller and the second roller rotate oppositely and grind the biological experimental material falling between the first roller and the second roller, the biological experimental material stuck on the first roller and the second roller during grinding is respectively scraped by the first scraper and the second scraper so as to avoid influencing the grinding effect of the first roller and the second roller, the scraped experimental material slides down on the sieve along the slopes of the first scraper and the second scraper, the second roller shaft drives the cam to rotate while rotating, the cam drives the T-shaped rod to move and simultaneously drives the human-shaped plate to slide in the horizontal groove of the hopper, realize the intermittent type unloading of hopper, still pass through first band pulley when second roller axle pivoted, the belt, the second band pulley drives the (mixing) shaft and rotates and stirs the biological experimental material of waiting to grind in the hopper, it falls to be convenient for wait to grind the whereabouts of biological experimental material in the hopper, first roller axle pivoted drives the driving lever simultaneously and rotates, pivoted driving lever intermittent type stirs the dog and makes it drive the sieve and sieves the biological experimental material that falls into in the sieve through first roller and the grinding of second roller, grind abundant biological experimental material and fall into first bucket through the sieve, do not grind abundant biological experimental material and stay on the sieve yet, can realize the grinding of biological experimental material simultaneously through this power supply of starter motor, the intermittent type blanking of hopper, the screening of biological experimental material on the sieve, four actions of stirring of biological experimental material in the hopper.

2. The grinding apparatus for biological test material according to claim 1, wherein: the first scraper blade of first roller below installation, second roller below installation second scraper blade, first scraper blade upper end is fixed on the upper cover, second scraper blade lower extreme is fixed on the casing, set up the visual window on the first scraper blade.

3. The grinding apparatus for biological laboratory material according to claim 1 or 2, wherein: the second barrel is symmetrically provided with connecting plates at two sides, the inner side surfaces of the connecting plates are provided with protrusions, and the first barrel is symmetrically provided with grooves matched with the protrusions at two sides.

4. The grinding apparatus for biological test material according to claim 1, wherein: the (mixing) shaft includes the (mixing) shaft main part, the central point of (mixing) shaft main part puts the equipartition stirring body, the stirring body is located in the hopper just the stirring body is including two side levers that the symmetry set up, install well core rod of encrypting the pole, the side lever with well core rod is all fixed in the (mixing) shaft main part and parallel arrangement, encrypt the pole with well core rod sets up perpendicularly.

5. The grinding apparatus for biological laboratory materials according to claim 3, wherein: the stripper includes the baffle of being connected with the sieve, two connecting rods of symmetry installation on the baffle, install the push pedal on two connecting rods, install the push pedal handle on the baffle.