A self-cleaning bovine semen freezing device

Abstract

The present invention relates to the technical field of semen freezing equipment, and specifically discloses a self-cleaning bovine semen freezing device, including a freezing box, a freezing unit arranged in the freezing box, and the freezing unit includes a sperm storage tube, a horizontally arranged circular support seat, a plurality of brush assemblies, a driving mechanism and an anti-rotation mechanism. The brush assemblies are evenly distributed along the circumference of the circular support seat and are assembled on the circular support seat along its radial sliding. The driving mechanism includes a first driving assembly for driving the circular support seat to rise and fall and rotate around its own axis. The driving mechanism also includes a second driving assembly for driving the brush assemblies to approach each other when the circular support seat descends and to move away from each other when the circular support seat rises. The self-cleaning bovine semen freezing device provided by the present invention can remove dust and other pollutants on the inner wall of the sperm storage tube and remove frost and the like on the outer wall, thereby realizing a self-cleaning function, preventing semen from being contaminated, and having an anti-slip function.

Description

Technical Field

[0001] The invention relates to the technical field of semen freezing equipment, and in particular to a self-cleaning bovine semen freezing device. Background Art

[0002] After the semen is collected, it needs to be stored and transported to a place where it is specially needed for mating, incubation or testing. When transporting the semen, it is necessary to ensure that the semen is in a stable low-temperature environment, so the semen is usually stored in a sperm storage tube in a freezer.

[0003] In the patent with the authorization announcement number CN111903667B, a semen freezer for storing Hu sheep semen is disclosed, which includes a cabinet, a control cabinet arranged on one side of the cabinet, a freezing layer arranged in the cabinet, and a clamping mechanism for clamping a sperm storage tube, wherein the clamping mechanism includes a clamping tube detachably arranged in the cabinet, a connecting device for connecting the clamping tube and the cabinet, a clamping plate symmetrically arranged in the clamping tube, and an adjusting device for adjusting the distance between the two clamping plates. When working, the sperm storage tube is placed in the clamping tube, and the distance between the two clamping plates is adjusted by the adjusting device, so that the clamping plate fits on the outer wall of the sperm storage tube, thereby achieving the clamping and fixing of the sperm storage tube.

[0004] However, since sperm storage tubes are generally made of glass tubes, and the wall of glass tubes is relatively smooth, the clamping plate and the glass tube are prone to slipping during the process of taking and placing the sperm storage tube, causing the glass tube to fall and break. In particular, the temperature difference between the freezer and the external environment is large, and frost will appear on the wall of the glass tube during the process of taking and placing, making the wall of the glass tube even smoother, further increasing the risk of the glass tube slipping and breaking. In addition, dust and other contaminants are easily introduced into empty sperm storage tubes. When semen is stored in the sperm storage tubes, it will cause semen contamination, which will affect mating, hatching or detection. Summary of the invention

[0005] The present invention provides a self-cleaning bovine semen freezing device, aiming to solve the technical problems in the related art that the wall of the semen storage tube is smooth and easy to fall off and cause damage, and the dust and other pollutants on the tube wall cause the semen sample to be contaminated.

[0006] The self-cleaning bovine semen freezing device of the present invention comprises a freezing box, a freezing unit arranged in the freezing box, and the freezing unit comprises a sperm storage tube, a horizontally arranged circular support seat, a plurality of brush assemblies, a driving mechanism and an anti-rotation mechanism;

[0007] Each brush assembly is evenly distributed along the circumference of the circular support seat and is slidably assembled on the circular support seat along its radial direction. Each brush assembly includes a brush extending upward. An empty sperm storage tube is used to be inverted on the brush of each brush assembly. The sperm storage tube filled with semen is placed between the brushes with the mouth facing upward.

[0008] The driving mechanism includes a first driving component for driving the circular support seat to rise and fall and rotate around its own axis, so as to drive the brush to clean the sperm storage tube when the circular support seat rotates; the driving mechanism also includes a second driving component for driving the brush components to move closer to each other when the circular support seat descends and move away from each other when the circular support seat rises, and the brush components are used to tighten the sperm storage tube when they move away from each other, and are used to clamp the sperm storage tube when they move closer to each other;

[0009] The anti-rotation mechanism includes a suction cup structure and a plurality of fan-shaped flexible sheets located at the top opening of the freezer; the suction cup structure includes a suction cup located at the top center of the circular support seat and arranged to rotate relative to the circular support seat, and a telescopic member connecting the suction cup and the bottom wall of the freezer.

[0010] The self-cleaning bovine semen freezing device of the present invention can sweep away dust and other pollutants on the inner wall of the sperm storage tube and frost and the like on the outer wall by setting a brush assembly, thereby realizing a self-cleaning function, avoiding semen contamination and preventing the sperm storage tube from slipping, causing it to fall and break. Moreover, the present invention can realize that the sperm storage tube automatically extends out of the freezer while the brush automatically tightens the sperm storage tube, and the sperm storage tube automatically retracts into the freezer while the brush automatically clamps the sperm storage tube. Not only is the operation simple and the degree of automation high, but the brush can also increase the contact area and friction with the sperm storage tube, firmly fix the sperm storage tube, and facilitate transportation.

[0011] Preferably, the first driving assembly comprises:

[0012] A rotating drum is vertically arranged at the bottom wall of the freezing chamber and is rotatably arranged relative to the freezing chamber;

[0013] A ball screw mechanism, comprising a screw rod vertically arranged in the rotating drum and connected to the bottom wall of the rotating drum, and a nut matched with the screw rod;

[0014] The first connecting tube is sleeved on the outer wall of the screw; the inner wall of the first connecting tube is matched with the outer wall of the screw in a concave-convex manner to limit the rotation of the first connecting tube relative to the screw; the top end of the first connecting tube is connected to the circular support seat, and the bottom end of the first connecting tube is provided with an annular plate along its radial direction, and the annular plate is inserted into the annular groove in the nut.

[0015] Preferably, the first driving assembly further comprises:

[0016] A driving rod is vertically arranged in the freezing box, and a top end of the driving rod passes through the top of the freezing box;

[0017] A gear rack unit, comprising a rack vertically arranged at the bottom end of the driving rod and a gear correspondingly meshed with the rack;

[0018] The bevel gear unit comprises a first bevel gear coaxially arranged with the gear and a second bevel gear correspondingly meshed with the first bevel gear; the second bevel gear is fixedly sleeved on the outer peripheral wall of the rotating drum.

[0019] Preferably, the second driving assembly comprises:

[0020] A horizontal plate is arranged in a horizontal mounting cavity in the circular support seat so as to rotate relative to the circular support seat, and a plurality of spiral slide grooves are arranged on the top of the horizontal plate;

[0021] A second connecting tube is sleeved on the outer wall of the first connecting tube and is rotatably arranged relative to the first connecting tube; two ends of the second connecting tube are respectively connected to the horizontal plate and the nut;

[0022] A plurality of movable blocks are arranged in the receiving groove inside the circular support seat for radial movement along the circular support seat; the brush assemblies are respectively installed on the movable blocks; a plug post is provided at the bottom of each movable block, and the plug posts on each movable block are respectively inserted into the spiral slide groove.

[0023] Through the cooperation of the plug post and the spiral slide groove, multiple moving blocks and multiple brush assemblies can achieve synchronous and smooth movement, that is, synchronously approach or move away from each other, thereby making the clamping force on the sperm storage tube uniform and preventing the sperm storage tube from being damaged.

[0024] Preferably, a accommodating cavity is formed in the moving block and is arranged radially along the circular support seat, and a long strip opening connected to the accommodating cavity is provided at the top of the moving block; an end opening connected to the accommodating cavity is provided at the outer end of the moving block; the brush assembly also includes a connecting rod connected to the lower end of the brush and located in the accommodating cavity; a spring is sleeved on the connecting rod, and the two ends of the spring respectively abut against the outer end wall of the accommodating cavity and the lower end of the brush.

[0025] By arranging the spring, the brush and the sperm storage tube are in flexible contact, so as to avoid the tube wall being damaged when the brush clamps or tightens the sperm storage tube.

[0026] Preferably, the top of the connecting rod is provided with a plurality of slots along its length direction; the bottom of the driving rod is connected with an annular chuck arranged above the circular support seat; the annular chuck comprises an annular horizontal plate and an annular vertical chuck connected to the bottom of the annular horizontal plate; the annular vertical chuck is used to be inserted into the corresponding slot when the circular support seat moves downward to its extreme position.

[0027] The brush is fixed by the cooperation of the annular vertical clamping plate and the clamping groove, so that the sperm storage tube is in rigid contact with the brush when it reaches its extreme position downward, thereby avoiding the sperm storage tube from shaking or being loosely fixed during transportation.

[0028] Preferably, the rack includes a polished rod section located in the upper section and a tooth section located in the lower section; when the rack moves downward to its extreme position, the height of the polished rod section is equal to the height of the gear.

[0029] Preferably, a limiting rod is provided on the outer wall of the second connecting tube; a vertically extending limiting groove is provided on the inner wall of the freezer, and one end of the limiting rod away from the second connecting tube is inserted into the limiting groove.

[0030] Preferably, the freezer comprises an outer shell and a frame arranged in the outer shell; the frame comprises a top plate, a bottom plate and at least two oppositely arranged side plates connecting the top plate and the bottom plate;

[0031] There are multiple freezing units; the top plate is provided with multiple entrance and exit openings corresponding to the freezing units, and each entrance and exit opening is provided with two double doors; a torsion spring is sleeved on the rotating shaft of the double doors, and the two ends of the torsion spring are respectively connected to the top plate and the double doors.

[0032] By setting up multiple inlet and outlet openings, the cold capacity in the freezer is prevented from being lost in the process of taking and placing the sperm storage tubes, which would cause the temperature of the freezer to rise, affect the activity of sperm, and increase the risk of semen contamination. At the same time, it also avoids the risk of the remaining sperm storage tubes being exposed to the external environment, reduces the possibility of semen specimens being infected with viruses and bacteria, and ensures the survival rate and reproduction rate of sperm.

[0033] Preferably, the freezer comprises an outer shell; the outer shell comprises a shell body and a shell cover covering the top opening of the shell body; the shell body and the shell cover are both provided with handles; and the inner walls of the shell body and the shell cover are provided with a heat-insulating layer.

[0034] The beneficial effects are:

[0035] 1. The self-cleaning bovine semen freezing device of the present invention can remove dust and other pollutants on the inner wall of the sperm storage tube and remove frost and the like on the outer wall by setting a brush assembly, thereby realizing a self-cleaning function, avoiding semen contamination and preventing the sperm storage tube from slipping, causing it to fall and break. Moreover, the present invention can realize that the sperm storage tube automatically extends out of the freezer while the brush automatically tightens the sperm storage tube, and the sperm storage tube automatically retracts into the freezer while the brush automatically clamps the sperm storage tube. It is not only simple to operate and has a high degree of automation, but the brush can also increase the contact area and friction with the sperm storage tube, firmly fix the sperm storage tube, and facilitate transportation.

[0036] 2. Through the cooperation of the plug column and the spiral slide groove, multiple moving blocks and multiple brush assemblies can achieve synchronous and smooth movement, that is, synchronously approach or move away from each other, thereby making the clamping force on the sperm storage tube uniform and preventing the sperm storage tube from being damaged.

[0037] 3. The spring is set to make the brush and the sperm storage tube in flexible contact, avoiding the damage of the tube wall when the brush clamps or tightens the sperm storage tube.

[0038] 4. The brush is fixed by the cooperation of the annular vertical clamping plate and the clamping groove, so that the sperm storage tube is in rigid contact with the brush when it reaches its extreme position downward, thereby avoiding the sperm storage tube from shaking or being loosely fixed during transportation.

[0039] 5. By setting up multiple inlet and outlet openings, it is possible to avoid a large loss of cold in the freezer during the process of taking and placing the sperm storage tubes, which would cause the temperature of the freezer to rise, affect the activity of sperm, and increase the risk of semen contamination. At the same time, it also avoids the risk of other sperm storage tubes being exposed to the external environment, reduces the possibility of semen specimens being infected with viruses and bacteria, and ensures the survival rate and reproduction rate of sperm. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0041] Figure 1 A three-dimensional diagram of a bovine semen freezing device according to an embodiment of the present invention;

[0042] Figure 2 A top view of the bovine semen freezing device according to an embodiment of the present invention with the shell cover removed;

[0043] Figure 3 It is a front view of the bovine semen freezing device according to the embodiment of the present invention with the shell cover removed;

[0044] Figure 4 for Figure 2 A cross-sectional view of the sperm duct in the inverted state along the AA axis;

[0045] Figure 5 for Figure 2 A cross-sectional view of the sperm duct in the upright position along the AA axis;

[0046] Figure 6 for Figure 2 Cross-sectional view along the BB direction;

[0047] Figure 7 for Figure 6 A partial enlarged view of part A;

[0048] Figure 8 for Figure 2 Sectional view along CC direction;

[0049] Fig. 9 for Figure 3 Cross-sectional view along the DD direction;

[0050] Fig.10 for Figure 3 Sectional view along EE direction;

[0051] Fig.11 A three-dimensional diagram of the connection between the drum, the screw and the second bevel gear according to an embodiment of the present invention;

[0052] Fig.12 is a three-dimensional diagram of a horizontal plate according to an embodiment of the present invention;

[0053] Fig.13 It is a three-dimensional diagram of a moving block according to an embodiment of the present invention.

[0054] Description of reference numerals:

[0055] 1. Shell; 11. Shell; 12. Shell cover; 13. Handle; 21. Top plate; 22. Bottom plate; 23. Side plate; 24. Partition plate; 25. Double door; 26. Torsion spring; 27. Inlet and outlet opening; 3. Sperm storage tube; 4. Round support seat; 5. Brush; 61. Rotating drum; 62. Screw; 621. Limiting groove; 622. Spiral slideway; 63. Nut; 64. Rack; 641. Light rod section; 65. Gear; 66 , first bevel gear; 67, second bevel gear; 68, first connecting cylinder; 69, driving rod; 70, horizontal disk; 701, spiral slide groove; 71, second connecting cylinder; 72, limit rod; 73, moving block; 74, plug column; 75, connecting rod; 751, slot; 76, spring; 77, annular chuck; 771, annular horizontal plate; 772, annular vertical clamping plate; 78, suction cup; 79, telescopic member; 80, fan-shaped flexible sheet. DETAILED DESCRIPTION

[0056] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0057] Example 1 of the self-cleaning bovine semen freezing device provided by the present invention:

[0058] The self-cleaning bovine semen freezing device of the present invention is used for freezing bovine semen, such as freezing Angus cattle semen, and can also be used for freezing other breeds of bovine semen. Figures 1 to 13 As shown, the self-cleaning bovine semen freezing device of the present invention includes a freezing box and a freezing unit arranged in the freezing box, and the freezing unit includes a sperm storage tube 3, a circular support seat 4, a plurality of brush assemblies, a driving mechanism and an anti-rotation mechanism.

[0059] The freezer of the present invention is filled with liquid nitrogen to provide a stable low-temperature environment, which is conducive to the preservation of semen. In some embodiments, the freezer can also be filled with liquid carbon dioxide or inert gas. Figures 1 to 10 As shown, the freezer includes an outer shell 1 and a frame arranged in the outer shell 1. The frame includes a top plate 21, a bottom plate 22, and at least two oppositely arranged side plates 23 connecting the top plate 21 and the bottom plate 22. A partition plate 24 may also be provided between the two opposite side plates 23. There are multiple freezing units. The top plate 21 is provided with a plurality of inlet and outlet openings 27 corresponding to each freezing unit, and each inlet and outlet opening 27 is provided with two split doors 25. A torsion spring 26 is sleeved on the rotating shaft of the split door 25, and the two ends of the torsion spring 26 are respectively connected to the top plate 21 and the split door 25.

[0060] The present invention provides a plurality of inlet and outlet openings 27 corresponding to the freezing unit, so that when taking out and placing the sperm storage tube 3, it is only necessary to open the double-door 25 at the corresponding position and take and place through the inlet and outlet openings 27 at the corresponding position. Since it is only necessary to open the corresponding inlet and outlet openings 27, and it is not necessary to open all the top openings of the freezer, a large amount of cold loss in the freezer is avoided, causing the temperature of the freezer to rise, affecting the activity of sperm, and increasing the risk of semen contamination. At the same time, it also avoids the risk of the remaining sperm storage tubes 3 being exposed to the external environment, reduces the possibility of semen specimens being infected with viruses and bacteria, and ensures the survival rate and reproduction rate of sperm.

[0061] The double-leaf door 25 and the torsion spring 26 are provided so that the double-leaf door 25 can realize the function of automatic closing. When the sperm storage tube 3 moves upward from the freezer, the closed double-leaf door 25 can be pushed open, and when the sperm storage tube 3 moves downward into the freezer, the double-leaf door 25 can be automatically closed under the resetting action of the torsion spring 26 to prevent the loss of cold.

[0062] like Figure 6 As shown, the inlet and outlet opening 27 includes an upper installation section and a lower installation section that are connected, and the diameter of the upper installation section is larger than the diameter of the lower installation section. The double-leaf door 25 is installed in the upper installation section.

[0063] like Figures 1 to 10 As shown, the housing 1 comprises a housing 11 and a housing cover 12 disposed on the top of the housing 11. The housing 11 and the housing cover 12 are both provided with a handle 13. The inner walls of the housing 11 and the housing cover 12 are provided with a heat-insulating layer.

[0064] The housing 1 can play a protective role, and the housing cover 12 cooperates with each of the double-opening doors 25 to play a double sealing role to prevent the loss of cold. The insulation layer further prevents the loss of cold, so that the freezer maintains a lower temperature environment. The handle 13 on the housing 11 is convenient for taking and placing the housing cover 12, and the handle 13 on the housing cover 12 is convenient for grabbing the entire device.

[0065] The sperm storage tube 3 is used to store bovine semen. The sperm storage tube 3 is a transparent glass tube with a columnar hollow structure, one end of which is provided with an opening for the injection of semen. In order to extend the utilization rate and service life of semen, conventional solutions such as dilution solutions, such as physiological saline, isotonic sugar solution and phosphate buffer solution, are usually injected into the sperm storage tube 3. In addition to injecting conventional solutions, the present invention also adds about 5% of A solution and / or B solution, wherein A solution is composed of taurine, L-lysine hydrochloride, inositol, vitamin B6, vitamin B12, citric acid, sodium citrate, lemon yellow, and purified water. B solution is soy isoflavones of appropriate concentration.

[0066] like Figures 4 to 8 As shown, the circular support seat 4 is arranged horizontally and is located below the sperm storage tube 3. The circular support seat 4 is driven by the driving mechanism to achieve lifting and rotation around its own axis, and drives the brush assembly to achieve synchronous lifting and rotation, thereby driving the lifting and cleaning of the sperm storage tube 3. A plurality of receiving grooves extending radially and evenly distributed along the circumferential direction are provided on the top of the circular support seat 4, and the brush assembly is assembled in the receiving grooves. The circular support seat 4 may include an upper cover body and a lower support plate.

[0067] like Figures 4 to 8 As shown, each brush assembly is evenly distributed along the circumference of the circular support base 4 and is slidably assembled on the circular support base 4 along its radial direction. Each brush assembly includes a brush 5 extending upward, and the empty sperm storage tube 3 is used to be inverted on the brush 5 of each brush assembly, as shown in FIG. Figure 4 and Figure 6 As shown in FIG. 1 , the sperm storage tube 3 filled with semen is placed between the brushes 5 with the mouth facing upward. Figure 5 As shown. The brush 5 includes a vertically arranged brush rod and bristles arranged on the outer peripheral wall of the brush rod. The bristles can be distributed all over the outer peripheral wall of the brush rod, or can be arranged at intervals around the circumference of the brush rod. The bristles can be made of PP (polypropylene) bristles, PBT (N6 and N66) soft bristles, nylon (PA) bristles or PET bristles. The brush assembly also includes a connecting rod 75 connected to the lower end of the brush 5, and the connecting rod 75 is assembled in the receiving groove.

[0068] The driving mechanism includes a first driving component for driving the circular support base 4 to rise and fall and rotate around its own axis, so as to drive the brush 5 to clean the sperm storage tube 3 when the circular support base 4 rotates. The driving mechanism also includes a second driving component for driving the brush components to move closer to each other when the circular support base 4 descends and away from each other when the circular support base 4 rises. When the brush components move away from each other, they are used to tighten the sperm storage tube 3, and when the brush components move closer to each other, they are used to clamp the sperm storage tube 3.

[0069] The working process of the self-cleaning bovine semen freezing device of the present invention is as follows: when semen storage is not required, Figure 4 and Figure 6As shown, the sperm storage tube 3 is placed vertically and inverted (i.e., the opening of the sperm storage tube 3 faces downward) in the freezer, and multiple brush assemblies support the sperm storage tube 3. When semen needs to be stored, the driving mechanism is started, and the first driving assembly drives the circular support seat 4 to rotate and drives the multiple brushes 5 to rotate. Since the anti-rotation mechanism limits the rotation of the sperm storage tube 3, the multiple brushes 5 and the sperm storage tube 3 rotate relative to each other, and the multiple brushes 5 can clean the inner wall of the sperm storage tube 3, and can sweep away dust and other pollutants and condensed frost on the inner wall of the sperm storage tube 3, thereby realizing the self-cleaning function and playing the role of anti-slip. At the same time, the first driving assembly also drives the circular support seat 4 to move upward, and the second driving assembly drives the multiple brushes 5 to move outward along the radial direction of the circular support seat 4, and then while driving the sperm storage tube 3 to move upward, the multiple brushes 5 gradually tighten the inner wall of the sperm storage tube 3 to prevent the sperm storage tube 3 from shaking during the movement. When the sperm storage tube 3 rises to the highest position, the multiple brushes 5 exert the greatest force on the sperm storage tube 3. At this time, the sperm storage tube 3 is extended out of the freezer, the sperm storage tube 3 is taken out, and semen is injected, and then the sperm storage tube 3 is placed upright (i.e., the opening of the sperm storage tube 3 faces upward) between the multiple brushes 5, as shown in FIG. Figure 5 As shown. The driving mechanism is started again, and the first driving component drives the circular support seat 4 to rotate in the opposite direction and drives the multiple brushes 5 to rotate. Since the anti-rotation mechanism limits the rotation of the sperm storage tube 3, the multiple brushes 5 and the sperm storage tube 3 rotate relative to each other. The multiple brushes 5 can clean the outer wall of the sperm storage tube 3 and remove the frost and the like condensed on the outer wall of the sperm storage tube 3, thereby realizing the self-cleaning function and playing the anti-slip function to prevent the sperm storage tube 3 from falling and being damaged. At the same time, the first driving component also drives the circular support seat 4 to move downward, and the second driving component drives the multiple brushes 5 to move radially inward along the circular support seat 4, thereby driving the sperm storage tube 3 to move downward, and the multiple brushes 5 gradually clamp the outer wall of the sperm storage tube 3, and since the contact area and friction between the brushes 5 and the sperm storage tube 3 are large, the sperm storage tube 3 can be prevented from shaking during the movement. When the sperm storage tube 3 drops to the lowest position, the clamping force of the multiple brushes 5 on the sperm storage tube 3 is also the greatest. At this time, the sperm storage tube 3 is firmly fixed, which can further prevent the sperm storage tube 3 from shaking during transportation.

[0070] The self-cleaning bovine semen freezing device of the present invention can sweep away dust and other pollutants on the inner wall of the sperm storage tube 3 and frost and the like on the outer wall by setting a brush assembly, thereby realizing a self-cleaning function, avoiding semen contamination and preventing the sperm storage tube 3 from slipping, causing it to fall and break. Moreover, the present invention can realize that the sperm storage tube 3 automatically extends out of the freezer while the brush 5 automatically tightens the sperm storage tube 3, and the sperm storage tube 3 automatically retracts into the freezer while the brush 5 automatically clamps the sperm storage tube 3. Not only is the operation simple and the degree of automation high, but the brush 5 can also increase the contact area and friction with the sperm storage tube 3, firmly fix the sperm storage tube 3, and facilitate transportation.

[0071] like Figures 4 to 7 As shown, the first drive assembly includes a rotating drum 61, a ball screw mechanism and a first connecting drum 68. The rotating drum 61 is vertically arranged on the bottom wall of the freezer and is rotatable relative to the freezer. The ball screw mechanism includes a screw 62 vertically arranged in the rotating drum 61 and connected to the bottom wall of the rotating drum 61, and a nut 63 matched with the screw 62. The first connecting drum 68 is sleeved on the outer wall of the screw 62. The inner wall of the first connecting drum 68 is matched with the outer wall of the screw 62 in a concave-convex manner to limit the rotation of the first connecting drum 68 relative to the screw 62. Fig.11 As shown, a limiting groove 621 is provided at the outer wall of the screw 62 along its axial direction, and a limiting protrusion matching the limiting groove 621 is provided at the inner wall of the first connecting cylinder 68 along its axial direction. A spiral slide 622 is also provided at the outer wall of the screw 62 to match the spiral protrusion at the inner wall of the nut 63. The top end of the first connecting cylinder 68 is connected to the circular support seat 4, and the bottom end of the first connecting cylinder 68 is provided with an annular plate along its radial direction, and the annular plate is inserted into the annular groove in the nut 63.

[0072] After the first driving assembly is started, the rotating drum 61 rotates, and drives the screw 62 to rotate, thereby driving the first connecting drum 68 and the circular support seat 4 to rotate synchronously, thereby realizing the rotation of the brush 5. At the same time, the rotation of the screw 62 also drives the nut 63 to move up and down, and the nut 63 drives the first connecting drum 68 and the circular support seat 4 to move up and down synchronously, thereby realizing the movement of the brush 5. By setting the rotating drum 61, the ball screw mechanism and the first connecting drum 68, the rotation and up and down movement of the circular support seat 4 and the brush 5 are realized, thereby realizing the cleaning and lifting of the sperm storage tube 3.

[0073] like Figures 4 to 7 As shown, the first driving assembly also includes a driving rod 69, a gear rack unit and a bevel gear unit. The driving rod 69 is vertically arranged in the freezer, and its top end passes through the top of the freezer. The gear rack unit includes a rack 64 vertically arranged at the bottom end of the driving rod 69 and a gear 65 correspondingly meshed with the rack 64. The bevel gear unit includes a first bevel gear 66 coaxially arranged with the gear 65 and a second bevel gear 67 correspondingly meshed with the first bevel gear 66. The second bevel gear 67 is fixedly sleeved on the outer peripheral wall of the rotating drum 61.

[0074] When the first driving assembly is working, the driving rod 69 is pulled upward or pressed downward to drive the rack 64 to move up and down, and the rotation of the drum 61 is realized through the transmission of the gear 65, the first bevel gear 66, and the second bevel gear 67 in sequence. In this way, the vertical movement of the driving rod 69 is converted into the rotation of the drum 61, and the drive is realized manually, which makes the structure simple and reduces the cost. In other embodiments, the driving rod 69 can also be replaced by a cylinder, a hydraulic cylinder or a linear motor to realize automatic operation and reduce labor intensity.

[0075] like Figures 4 to 8 , Fig.10 , Fig.12 As shown, the second driving assembly includes a horizontal plate 70, a second connecting cylinder 71 and a plurality of moving blocks 73. The horizontal plate 70 is relatively rotatably arranged in a horizontal mounting cavity in the circular support seat 4, and a plurality of spiral slide grooves 701 are arranged on the top of the horizontal plate 70.

[0076] The upper cover body and the lower support plate of the circular support seat 4 form the above-mentioned horizontal installation cavity. The second connecting tube 71 is sleeved on the outer wall of the first connecting tube 68 and is arranged to rotate relative to the first connecting tube 68. The two ends of the second connecting tube 71 are respectively connected to the horizontal disk 70 and the nut 63. A plurality of movable blocks 73 are arranged in the receiving groove inside the circular support seat 4 for radial movement along the circular support seat 4. The receiving groove is connected to the horizontal installation cavity. The connecting rod 75 of the brush assembly is assembled in the movable block 73. A plug post 74 is provided at the bottom of each movable block 73, and the plug posts 74 on each movable block 73 are respectively inserted into the spiral slide groove 701. For example, as Fig.10 and Fig.13 As shown, the number of the moving blocks 73, the brush assemblies and the spiral slide groove 701 are three, and they are respectively assembled one by one, so that the three moving blocks 73 and the three brush assemblies can achieve synchronous movement, that is, synchronously approach or move away from each other, thereby making the clamping force on the sperm storage tube 3 uniform and preventing the sperm storage tube 3 from being damaged.

[0077] The working process of realizing the radial movement of the brush 5 along the circular support seat 4 is as follows: the rotation of the circular support seat 4 drives the moving block 73 to rotate synchronously, and the plug posts 74 at the bottom of the multiple moving blocks 73 slide in their respective spiral grooves 701. Since the spiral grooves 701 are variable diameter settings, the distance between the moving block 73 and the center of the circular support seat 4 changes during the sliding process, that is, the moving block 73 is moved in the accommodating groove, and the brush 5 is moved radially along the circular support seat 4, thereby achieving the tightening or clamping of the sperm storage tube 3.

[0078] like Figures 4 to 8 , Fig.10 and Fig.13 As shown, a receiving cavity is formed in the moving block 73 along the radial direction of the circular support seat 4, and a long strip opening is provided at the top of the moving block 73 to communicate with the receiving cavity. An end opening is provided at the outer end of the moving block 73 to communicate with the receiving cavity. The connecting rod 75 of the brush assembly is assembled in the receiving cavity in the moving block 73. A spring 76 is sleeved on the connecting rod 75, and the two ends of the spring 76 are respectively against the outer end wall of the receiving cavity and the lower end of the brush 5.

[0079] The spring 76 provided in the present invention allows the brush 5 to be in flexible contact with the sperm storage tube 3, thereby preventing the brush 5 from causing damage to the tube wall when clamping or tightening the sperm storage tube 3.

[0080] like Figure 6 and Figure 7 As shown, the top of the connecting rod 75 is provided with a plurality of slots 751 along its length direction. The bottom of the driving rod 69 is connected to an annular chuck 77 disposed above the circular support seat 4. The annular chuck 77 includes an annular horizontal plate 771 and an annular vertical chuck plate 772 connected to the bottom of the annular horizontal plate 771. The annular vertical chuck plate 772 is used to be inserted into the slots 751 when the circular support seat 4 moves downward to its extreme position.

[0081] In the present invention, when the circular support seat 4 moves to its lower limit position, the sperm storage tube 3 also moves into place and can be stored and transported. Since the sperm storage tube 3 is in flexible contact with the brush 5, during transportation, if there are bumps, the sperm storage tube 3 may shake or be loosely fixed. Therefore, the annular vertical clamping plate 772 cooperates with the clamping groove 751 to achieve the fixation of the brush 5, so that the sperm storage tube 3 and the brush 5 are in rigid contact, thereby avoiding the possible shaking or loose fixation of the sperm storage tube 3. The rigid contact mentioned here is relative to the situation that when the annular vertical clamping plate 772 is not in cooperation with the clamping groove 751, the bottom end of the brush 5 is in contact with the spring 76, and the brush 5 can have a certain displacement. In fact, the brush 5 itself has a certain elastic deformation. When the brush 5 contacts the sperm storage tube 3, it is not a completely rigid contact.

[0082] The specific solution to achieve rigid contact is as follows: Figure 8As shown, the rack 64 includes a light rod section 641 located in the upper area and a tooth section located in the lower section. When the rack 64 moves downward to its limit position, the height of the light rod section 641 is equal to the height of the gear 65. During operation, the driving rod 69 moves upward, driving the annular vertical clamping plate 772 to move upward. Due to the existence of the light rod section 641, the rack 64 has not yet engaged with the gear 65, so the connecting rod 75 and the clamping groove 751 thereon do not move, and the annular vertical clamping plate 772 is disengaged from the clamping groove 751, releasing the lock on the connecting rod 75, so that the brush 5 and the sperm storage tube 3 are in flexible contact during the ascending process, which not only realizes the support of the sperm storage tube 3, but also ensures that the sperm storage tube 3 can be easily taken out when the sperm storage tube 3 rises to its limit position. The driving rod 69 moves downward, the rack 64 and the gear 65 mesh, so that the annular vertical clamping plate 772 and the connecting rod 75 and the clamping groove 751 thereon move downward synchronously, so that the brush 5 is in flexible contact with the sperm storage tube 3 during the first period of the descending process. When the connecting rod 75 and the clamping groove 751 thereon descend to their limit position, the rack 64 moves to the position where it is about to disengage from the gear 65, that is, the lower end of the light rod section 641 is at the same height as the gear 65, and the driving rod 69 continues to move downward. Since the light rod section 641 is disengaged from the gear 65, the connecting rod 75 and the clamping groove 751 thereon no longer move downward, and the driving rod 69 drives the annular vertical clamping plate 772 to continue to move downward until it is clamped into the corresponding clamping groove 751, thereby realizing the locking of the connecting rod 75 and the brush 5, so that the brush 5 is in rigid contact with the sperm storage tube 3, and the sperm storage tube 3 is prevented from shaking or being loosely fixed during transportation.

[0083] like Fig.10 As shown, a limiting rod 72 is provided on the outer wall of the second connecting tube 71. A vertically extending limiting slot is provided on the side wall of the freezer, and one end of the limiting rod 72 away from the second connecting tube 71 is inserted into the limiting slot. Specifically, the limiting slot is provided on the side plate 23.

[0084] In the present invention, the limiting rod 72 and the limiting groove are used in combination to limit the rotation of the second connecting tube 71 around its axial direction, so that the second connecting tube 71 can only move in the vertical direction, and also ensure that the nut 63 and the horizontal plate 70 connected to the second connecting tube 71 can only move in the vertical direction, thereby realizing the corresponding function.

[0085] like Figure 6 , Figure 7 and Fig. 9As shown, the anti-rotation mechanism includes a suction cup structure and a plurality of fan-shaped flexible sheets 80 arranged in a circular array at the top opening of the freezer. Specifically, the fan-shaped flexible sheet 80 is installed in the lower mounting section of the inlet and outlet opening 27 and is located directly below the double-leaf door 25. The suction cup structure includes a suction cup 78 located at the top center of the circular support seat 4 and arranged to rotate relative to the circular support seat 4, and a telescopic member 79 connecting the suction cup 78 and the bottom wall of the freezer. Figure 6 and Figure 7 As shown, the screw rod 62 has a hollow cavity therein, and the telescopic member 79 is located in the hollow cavity.

[0086] In the present invention, the fan-shaped flexible sheet 80 can be made of flexible materials such as rubber or silicone. Figures 4 to 6 and Fig. 9 As shown, in the natural state, a plurality of fan-shaped flexible sheets 80 block the top opening of the freezer. When the sperm storage tube 3 moves upward, the plurality of fan-shaped flexible sheets 80 are pushed open, so that the fan-shaped flexible sheets 80 are elastically deformed, and friction resistance is generated between the fan-shaped flexible sheets 80 and the sperm storage tube 3 after contact, thereby hindering the rotation of the sperm storage tube 3 and achieving an anti-rotation effect. When the sperm storage tube 3 moves downward into the freezer, the fan-shaped flexible sheets 80 resume elastic deformation and continue to block the top opening of the freezer to prevent the loss of cold.

[0087] After the sperm storage tube 3 is injected with semen, it is placed forward and sandwiched between multiple brush components, and its bottom is in contact with the suction cup 78 and is adsorbed by the suction cup 78. Since the suction cup 78 is connected to the bottom wall of the freezer through the telescopic member 79, the rotation of the suction cup 78 is restricted, allowing the suction cup 78 to move up and down with the circular support base 4. Therefore, by setting up the suction cup structure, the rotation of the sperm storage tube 3 can be restricted, so that relative rotation can occur between the sperm storage tube 3 and the brush 5. Figure 7 As shown, the top of the suction cup 78 has an arc-shaped adsorption surface that matches the sealed end of the sperm storage tube 3. The telescopic member 79 includes an outer cylinder whose bottom end is connected to the bottom wall of the freezer and an inner rod sleeved in the outer cylinder, and the top end of the inner rod is connected to the bottom of the suction cup 78. The inner wall of the outer cylinder and the outer wall of the inner rod are concave-convex matching, which is used to limit the relative rotation between the outer cylinder and the inner rod.

[0088] The overall working process of the present invention is as follows:

[0089] Pulling the driving rod 69 upwards, firstly drives the rack 64 and the annular vertical clamping plate 772 to move upwards for a short distance, so that the annular vertical clamping plate 772 is disengaged from the clamping groove 751, and the locking of the connecting rod 75 and the brush 5 is released, and then the driving rod 69 continues to move upwards, so that the rack 64 is meshed with the gear 65, driving the gear 65 to rotate, and synchronously driving the first bevel gear 66, the second bevel gear 67 and the rotating drum 61 to rotate. The rotating drum 61 drives the screw 62 to rotate, and then drives the first connecting tube 68 and the circular support seat 4 to rotate synchronously, so as to realize the rotation of the brush 5. At the same time, the rotation of the screw 62 also drives the nut 63 to move upwards, and then drives the first connecting tube 68, the circular support seat 4, the brush 5 and the sperm storage tube 3 to move upward synchronously. The sperm storage tube 3 does not rotate under the friction resistance of the multiple fan-shaped flexible sheets 80, so as to realize the cleaning of the inner wall of the sperm storage tube 3 by the brush 5. The rotation of the circular support seat 4 also drives the moving block 73 to rotate. Under the cooperation of the plug post 74 at the bottom of the moving block 73 and the spiral slide groove 701 at the top of the horizontal plate 70, the moving block 73 drives the brush 5 to move radially outward along the circular support seat 4, thereby gradually tightening the inner wall of the sperm storage tube 3. And because the spring 76 is sleeved on the connecting rod 75, the brush 5 and the sperm storage tube 3 are in flexible contact. When the sperm storage tube 3 reaches the highest position upward, the sperm storage tube 3 is taken out from the brush 5, and after the semen is injected, it is placed vertically and positively between the brushes 5, and at the same time, the suction cup 78 is adsorbed on the sealed end of the sperm storage tube 3 to prevent the sperm storage tube 3 from rotating.

[0090] Pressing the driving rod 69 downwards, the working process is basically the same as pulling the driving rod 69 upwards, so that the sperm storage tube 3 moves downwards, and the brush 5 cleans the frost and the like on the outer wall of the sperm storage tube 3 to prevent the sperm storage tube 3 from slipping and being damaged. When the circular support seat 4 and the sperm storage tube 3 are lowered to the lowest position, they stop. Since the rack 64 has a light rod section 641, the driving rod 69 can drive the rack 64 to continue to move downwards for a short distance, and drive the annular vertical clamping plate 772 to be clamped into the clamping groove 751, so as to lock the connecting rod 75 and the brush 5, so that the brush 5 is in rigid contact with the sperm storage tube 3, thereby preventing the sperm storage tube 3 from shaking or being loosely fixed during transportation.

[0091] Example 2 of the self-cleaning bovine semen freezing device provided by the present invention:

[0092] The difference between it and embodiment 1 mainly lies in the first drive assembly and the second drive assembly:

[0093] In Example 1, the first driving assembly includes a rotating cylinder 61, a ball screw mechanism, a first connecting cylinder 68, a driving rod 69, a gear rack unit and a bevel gear unit, which realizes the function of lifting and lowering the circular support base 4 and rotating around its own axis. The second driving assembly includes a horizontal plate 70, a second connecting cylinder 71 and a plurality of moving blocks 73, which realizes the function of driving the brush assemblies to move closer to each other when the circular support base 4 descends and to move away from each other when the circular support base 4 rises.

[0094] In this embodiment, the first driving assembly includes a lifting motor and a rotating motor, the lifting motor is located at the bottom of the freezer, the rotating motor is installed at the end of the output shaft of the lifting motor, and the output shaft of the rotating motor is connected to the bottom of the circular support base 4. The second driving assembly includes a plurality of cylinders uniformly distributed along the circumference of the circular support base 4, and the ends of the output ends of the cylinders are connected to the brush assembly.

[0095] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "upper", "lower", "horizontal", "top", "bottom", "inside", "outside" and the like, which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0096] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A self-cleaning bovine semen freezing device, comprising a freezing box and a freezing unit arranged in the freezing box, characterized in that: The cryopreservation unit includes a sperm storage tube, a horizontally arranged circular support seat, a plurality of brush assemblies, a driving mechanism and an anti-rotation mechanism; the horizontally arranged circular support seat is provided with a horizontal mounting cavity and a receiving groove, each brush assembly is evenly distributed along the circumference of the circular support seat and is slidably assembled on the circular support seat along its radial direction, each brush assembly includes a brush extending upward, an empty sperm storage tube is used to be buckled on each brush, and a sperm storage tube filled with semen is placed between each brush with its mouth facing upward; the driving mechanism includes a first driving assembly for driving the circular support seat to rise and fall and rotate around its own axis, so that when the circular support seat rotates The driving mechanism also includes a second driving assembly for driving the brush assemblies to move closer to each other when the circular support seat descends and to move away from each other when the circular support seat rises, and the brush assemblies are used to tighten the sperm storage tube when they move away from each other, and are used to clamp the sperm storage tube when they move closer to each other; the anti-rotation mechanism includes a suction cup structure and a plurality of fan-shaped flexible sheets located at the top opening of the freezer; the suction cup structure includes a suction cup located at the top center of the circular support seat and arranged to rotate relative to the circular support seat, and a telescopic member connecting the suction cup and the bottom wall of the freezer; The first driving assembly includes: a rotating drum, which is vertically arranged at the bottom wall of the freezing box and is rotatable relative to the freezing box; a ball screw mechanism, which includes a screw rod vertically arranged in the rotating drum and connected to the bottom wall of the rotating drum and a nut matched with the screw rod; a first connecting cylinder, which is sleeved on the outer wall of the screw rod; The second driving assembly includes a horizontal disk, a second connecting cylinder and a plurality of moving blocks; the horizontal disk is arranged in a horizontal mounting cavity in the circular support seat so as to rotate relative to the circular support seat, and a plurality of spiral slide grooves are arranged on the top of the horizontal disk; the second connecting cylinder is sleeved on the outer wall of the first connecting cylinder and is arranged to rotate relative to the first connecting cylinder; the two ends of the second connecting cylinder are respectively connected to the horizontal disk and the nut; a plurality of moving blocks are arranged in the accommodating grooves in the circular support seat so as to move radially along the circular support seat; the brush assemblies are respectively installed on the moving blocks; a plug column is provided at the bottom of each of the moving blocks, and the plug columns on each of the moving blocks are respectively inserted into the spiral slide grooves.

2. The self-cleaning bovine semen freezing device according to claim 1, characterized in that: The inner wall of the first connecting tube is matched with the outer wall of the screw in a concave-convex manner to limit the rotation of the first connecting tube relative to the screw; the top end of the first connecting tube is connected to the circular support seat, and the bottom end of the first connecting tube is provided with an annular plate along its radial direction, and the annular plate is inserted into the annular groove in the nut.

3. The self-cleaning bovine semen freezing device according to claim 2, characterized in that: The first driving assembly also includes: a driving rod, which is vertically arranged in the freezer and its top end passes through the top of the freezer; a gear rack unit, including a rack vertically arranged at the bottom end of the driving rod and a gear corresponding to the rack; a bevel gear unit, including a first bevel gear coaxially arranged with the gear and a second bevel gear corresponding to the first bevel gear; the second bevel gear is fixedly sleeved on the outer peripheral wall of the rotating drum.

4. The self-cleaning bovine semen freezing device according to claim 3, characterized in that: The movable block has a receiving cavity radially arranged along the circular support seat, and the top of the movable block is provided with a long strip opening connected to the receiving cavity; the outer end of the movable block is provided with an end opening connected to the receiving cavity; the brush assembly also includes a connecting rod connected to the lower end of the brush and located in the receiving cavity; a spring is sleeved on the connecting rod, and the two ends of the spring respectively abut against the outer end wall of the receiving cavity and the lower end of the brush.

5. The self-cleaning bovine semen freezing device according to claim 4, characterized in that: The top of the connecting rod is provided with a plurality of slots along its length direction; the bottom of the driving rod is connected with an annular chuck arranged above the circular support seat; the annular chuck comprises an annular horizontal plate and an annular vertical chuck connected to the bottom of the annular horizontal plate; the annular vertical chuck is used to be inserted into the corresponding slot when the circular support seat moves downward to its extreme position.

6. The self-cleaning bovine semen freezing device according to claim 5, characterized in that: The rack includes a polished rod section located in the upper section and a tooth section located in the lower section; when the rack moves downward to its extreme position, the height of the polished rod section is equal to the height of the gear.

7. The self-cleaning bovine semen freezing device according to claim 1, characterized in that: A limiting rod is provided on the outer wall of the second connecting tube; a vertically extending limiting slide groove is provided on the inner side wall of the freezing box, and one end of the limiting rod away from the second connecting tube is inserted into the limiting slide groove.

8. The self-cleaning bovine semen freezing device according to claim 1, characterized in that: The freezer includes an outer shell and a frame arranged inside the outer shell; the frame includes a top plate, a bottom plate and at least two oppositely arranged side plates connecting the top plate and the bottom plate; there are multiple freezing units; the top plate is provided with multiple entrance and exit openings corresponding to each of the freezing units, and each of the entrance and exit openings is provided with two double doors; a torsion spring is sleeved on the rotating shaft of the double door, and the two ends of the torsion spring are respectively connected to the top plate and the double door.

9. The self-cleaning bovine semen freezing device according to claim 1, characterized in that: The freezer comprises an outer shell; the outer shell comprises a shell body and a shell cover arranged on the top opening of the shell body; the shell body and the shell cover are both provided with handles; and the inner walls of the shell body and the shell cover are provided with a heat-insulating layer.

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