Semi-automatic hole plate type sample loading / unloading device

Abstract

This application discloses a semi-automatic hole-plate sample loading and unloading device, belonging to the technical field of biological sample storage. The device includes a cryogenic storage tank, a basket lifting mechanism, and a plate rack operating mechanism. The cryogenic storage tank has an loading and unloading passage at its top, and an elevator passage connected above the loading and unloading passage. The basket can be raised and lowered within the elevator passage. The basket lifting mechanism is located at the top of the elevator passage to remove the basket, and the plate rack operating mechanism is located at the bottom of the elevator passage to push the plate rack in the basket out of the elevator passage. This application does not address or resolve the unresolved issues of preventing the plate rack from sliding sideways and accurately loading and unloading the plate rack. Furthermore, the hole-plate loading and unloading function is realized, which improves the verticality of the basket during the elevator process, allowing for quick removal of the basket and greater maneuverability.

Description

[Technical Field]

[0001] This invention relates to a semi-automatic hole-plate sample loading and unloading device, which belongs to the technical field of biological sample storage. [Background technology]

[0002] Currently, conventional small semi-automated sample storage devices used in laboratories use a plate rack to place frozen storage tubes containing sample cells in a basket, and then use a rotating cylinder storage mechanism to store the basket in a loading and unloading device in a low-temperature environment.

[0003] In known semi-automated sample storage devices, shaking during transport can cause the plate rack in the basket to slide sideways, and the method for removing the sample storage device is inconvenient. Also, if the nitrogen supply function of the liquid nitrogen tank fails, sample transfer can be difficult.

[0004] For example, a prior art lift-open storage tank with a basket, application number CN202121246702.X, includes a refrigerated tank and a removal member, the refrigerated tank having an upper surface with a removal opening, a thermal lid attached to the removal opening, the removal member mounted above the refrigerated tank and corresponding to the thermal lid, the removal member including an axial movement mechanism and a lifting mechanism, the lifting mechanism removing the basket and driving the thermal lid to move up and down, and the axial movement mechanism driving the thermal lid to move axially. This device uses the lifting mechanism to lift the thermal lid and move it horizontally to one side, and then lift the basket and secure it with a locking member, preventing it from swaying side to side, enabling accurate removal and storage of samples, reducing the height of the storage equipment and adapting to various transportation environments. However, in the case of semi-automation, the storage tank does not address or solve the problems of preventing the plate rack from sliding sideways and accurately loading and unloading, thus requiring a semi-automatic whole-plate sample loading and unloading device. Summary of the Invention [Problem to be solved by the invention]

[0005] The purpose of this invention is to provide a semi-automatic hole plate type sample loading and unloading device, which solves the problems that semi-automatic devices have not addressed or solved, such as preventing the plate rack from sliding sideways and accurately loading and unloading. In addition, it realizes a hole plate type loading and unloading function, improves the verticality of the basket during the lifting and lowering process, realizes quick removal of the basket, and is more maneuverable. [Means for solving the problem]

[0006] To solve the technical problems, the present invention adopts the following technical solutions: A semi-automated whole-plate sample loading and unloading device, comprising a cryogenic storage tank, a basket lifting mechanism, and a plate rack operating mechanism; An access hole is opened at the top of the low-temperature storage tank, and an elevator passage is connected above the access hole, so that the basket can move up and down within the elevator passage; The basket lifting mechanism is provided at the top of the lifting passage, and is capable of removing the basket; The plate rack operating mechanism is provided at the bottom of the elevator passageway and can push the plate rack in the basket out of the elevator passageway.

[0007] Optionally, the basket lifting mechanism includes a driving member, a connecting member and a tank bung, one end of the connecting member is connected to the driving member in a transmission manner, the other end can be docked to the basket, and the tank bung is provided on the top of the other end and corresponds to the loading and unloading passage hole.

[0008] Optionally, the driving member includes a lifting drive motor, a gear and a chain, the lifting drive motor being connected to one end of the chain, and the other end of the chain being meshed with the gear and then connected to the hook; The joining member includes a hook.

[0009] Optionally, the driving member further includes a chain housing chamber, a gear housing chamber, and a cover, the lifting passage is provided in the cover, the gear housing chamber communicates with a tip of the cover, and the communication housing chamber communicates with a side of the gear housing chamber; The lifting drive motor and the chain are disposed in the chain housing chamber, the gear is fixed in the gear housing chamber, and the front end of the chain, the tank plug and the hook are disposed in the cover.

[0010] Optionally, the plate rack operating mechanism includes a push motor, a push rod, an active push plate unit and a door unit; The push-out motor and the door unit are disposed on opposite sides of the exterior of the cover to correspond to the position of the plate rack; The output shaft of the extrusion motor is coaxially connected to the push rod toward the inside, and can push the plate rack; The active push plate unit is connected to the inside of the door unit and can be joined to a plate rack.

[0011] Optionally, the door unit includes a fixed plate and a door, the fixed plate being fixedly connected to the inside of the door, and an access opening being provided in the middle of the fixed plate for the entry and exit of the plate rack.

[0012] Optionally, the active push plate unit includes a push plate and a pulley, the rear end of the push plate is hinged to the door, the front end of the push plate is attached to the pulley through the access opening, and the pulley abuts against a basket in the elevator aisle.

[0013] Optionally, the basket is mounted in the cryogenic storage tank by a rotating cylinder storage mechanism, and the basket can move in the lifting passage through the loading and unloading passage hole and rotate around itself in the cryogenic storage tank.

[0014] Optionally, the carousel storage mechanism includes a turntable and a basket cover, the basket cover being provided on the outer periphery of the turntable and capable of docking with the elevator walkway for rotation.

[0015] Optionally, when the low-temperature storage tank is in a sample vapor storage environment, a plurality of nitrogen passage holes are provided on the side of the hanging basket cover, and when the low-temperature storage tank is in a sample liquid phase storage environment, the liquid nitrogen level does not exceed the height of the upper surface of the hanging basket cover.

[0016] Optionally, the turntable includes a rotary drive motor and a turntable body, the rotary drive motor being connected to the center of the turntable body above by a central rotation shaft, a plurality of guide members being uniformly arranged on all four sides of the periphery of the turntable body, and locking members being arranged between the guide members for removably attaching the basket cover and the basket to the turntable body.

[0017] Optionally, the guide member includes an axially arranged guide groove and is slidably connected to a guide rail on the side of the basket cover, and the locking member includes a boss and a hook hole opened in the boss and is connected to cooperate with a side hook on the upper end of the basket.

[0018] Optionally, the basket includes a basket body, within which are provided a plurality of vertically arranged storage grooves for receiving plate racks, each storage groove having a pair of open sides, and further including an upper hook portion on the top portion of the basket body.

[0019] Optionally, the upper hook portion is connected by symmetrically arranged locking claws, with a locking opening formed between the two locking claws, so as to be linked with the hook of the joining member.

[0020] Optionally, the overall shape of the locking opening and the hook are both forward tapered.

[0021] Optionally, each side of the basket cover is provided with a plurality of nitrogen passage holes, and the liquid nitrogen is provided below the basket cover and does not directly contact the basket cover.

[0022] Preferably, each side of the hanging basket cover is a closed surface and the top end surface is an open end, the liquid nitrogen is provided around the periphery of the hanging basket cover, and the height of the liquid nitrogen is lower than the height of the hanging basket cover. [Effects of the Invention]

[0023] The above technical solution of the present invention has the following beneficial effects: A connecting lifting passageway is provided above the low-temperature storage tank to connect the basket lifting mechanism, which allows the basket to be removed while maintaining a low-temperature environment and improves the accuracy of loading and unloading. The plate rack operating mechanism automatically pushes the plate rack out of the basket, and a human or robot such as an AGV removes and transports it at the exit, realizing a hole-plate loading and unloading function and making the semi-automatic loading and unloading of the plate rack more convenient and accurate. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a perspective view of a semi-automatic hole-plate sample loading and unloading device according to the present invention; [Figure 2] 1 is a plan view of a semi-automatic hole-plate sample loading and unloading device according to the present invention; [Figure 3] FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2. [Figure 4] 1 is a schematic diagram of the internal structure of the semi-automatic hole-plate sample loading / unloading device of the present invention; [Figure 5] 1 is a perspective view of the rotating cylinder storage mechanism and the basket in the semi-automatic hole-plate type sample loading and unloading device of the present invention. FIG. [Figure 6] 1 is a perspective view of the basket lifting mechanism, plate rack operating mechanism, and basket in the semi-automatic hole-plate type sample loading and unloading device of the present invention; FIG. [Figure 7]1 is a front view of the basket lifting mechanism, plate rack operating mechanism, and basket in the semi-automatic hole-plate type sample loading and unloading device of the present invention. FIG. [Figure 8] 1 is an exploded view of the plate rack operating mechanism of the semi-automatic hole-plate type sample loading and unloading device of the present invention; [Figure 9] 1 is a perspective view of a turntable in a semi-automatic hole-plate type sample loading and unloading device according to the present invention; [Figure 10] FIG. 8 is an enlarged view of the structure of part B in FIG. 7. [Figure 11] 1 is a perspective view of the basket cover of the semi-automatic hole-plate type sample loading and unloading device of the present invention; FIG. [Figure 12] 1 is a perspective view of a basket in the semi-automatic hole-plate type sample loading and unloading device of the present invention; FIG. [Figure 13] This is an exploded view of the structure of the hanging basket and hanging basket cover in the case of gas-phase frozen storage. [Figure 14] This is an exploded view of the structure of the hanging basket and hanging basket cover in the case of liquid-phase frozen storage. [Figure 15] 1 is a perspective view of a cryogenic storage tank in a semi-automatic hole-plate sample transfer device according to the present invention, showing a schematic diagram of a hanging basket cover equipped with a liquid nitrogen blocking structure. DETAILED DESCRIPTION OF THE INVENTION

[0025] The technical solutions of the present invention will be further described below in combination with examples and drawings.

[0026] A semi-automatic whole-plate type sample loading / unloading device 100 includes a cryogenic storage tank 1, a basket lifting mechanism 2, and a plate rack operating mechanism 3; An inlet / outlet passage hole 11 is opened at the upper end of the low-temperature storage tank 1, and an elevator passage 12 is connected above the inlet / outlet passage hole 11, so that the basket 4 can move up and down within the elevator passage 12. The basket lifting mechanism 2 is provided at the top of the lifting passage 12, and is capable of removing the basket 4; The plate rack operating mechanism 3 is provided at the bottom of the elevator passage 12 and can push the plate rack 200 in the basket 4 out of the elevator passage 12.

[0027] The cryogenic storage tank 1 may be a liquid nitrogen tank, specifically, composed of a vacuum tank body 1-1 and a lid 1-2. An elevator passage 12 extends above the cryogenic storage tank 1. The basket 4 rotates to the loading / unloading passage 11 and is pulled by the basket lifting mechanism 2 directly into the elevator passage 12, fully satisfying the cold chain unloading needs of the basket 4. This ensures the basket 4 is lifted vertically and prevents shaking and sliding of the plate rack 200 to some extent. Once the plate rack 200 reaches the plate rack operating mechanism 3, it is automatically pushed out of the basket 4 and the elevator passage 12, solving the problem of inaccurately positioning the basket plate rack and improving the accuracy and efficiency of loading and unloading. To further optimize the cooling effect of the loading / unloading passage 11, a heat-insulating plate 1-2-1 may be provided on the lid 1-2.

[0028] The above-mentioned low-temperature storage tank 1 obtains a frozen storage temperature by introducing liquid nitrogen or nitrogen gas through a nitrogen supply mechanism 6. Specifically, nitrogen is supplied to the low-temperature storage tank 1 from the bottom through a nitrogen passage pipe 61. At the same time, a valve unit 611 provided on the nitrogen passage pipe 61 is used as a liquid supply valve for replenishing liquid nitrogen. Specifically, the valve unit 611 is attached to the outside of the low-temperature storage tank 1 for easy operation and control.

[0029] In another embodiment of the present invention, the basket lifting mechanism 2 includes a driving member 21, a connecting member 22, and a tank stopper 23, one end of the connecting member 22 is connected to the driving member 21 for transmission, and the other end can be docked with the basket 4, and the tank stopper 23 is provided on the top of the other end and corresponds to the loading / unloading passage hole 11.

[0030] Before removal, the tank bung 23 is lowered into the loading / unloading passage hole 11 by the driving member 21, thereby maintaining the airtightness of the low-temperature storage tank 1; when the basket 4 is to be removed, the tank bung 23 is opened, and then docked to the basket 4 by the connecting member 22 and pulled by the driving member 21 into the lifting passage 12, ready for further processing by the plate rack operating mechanism 3.

[0031] In another embodiment of the present invention, the driving member 21 includes a lifting driving motor 211, a gear 212, and a chain 213, the lifting driving motor 211 is connected to one end of the chain 213, the other end of the chain 213 is meshed with the gear 212, and then connected to the hook 221; The joining member 22 includes a hook 221 .

[0032] The hook 221 and the basket 4 realize a detachable docking, and the direction is changed and transmitted by the gear 212 of the chain 213, and the hook 221 is driven by the lifting drive motor 211 to move up and down accordingly.

[0033] In another embodiment of the present invention, the driving member 21 further includes a chain housing chamber 214, a gear housing chamber 215 and a cover 216, the lifting passage 12 is disposed in the cover 216, the gear housing chamber 212 communicates with the front end of the cover 216, and the communicating housing chamber communicates with the side of the gear housing chamber 212; The lifting drive motor 211 and the chain 213 are disposed in a chain housing chamber 214 , the gear 212 is fixed in the gear housing chamber 212 , and the front end of the chain 213 , the tank plug 23 and the hook 221 are disposed in a cover 216 .

[0034] The chain housing chamber 214, the gear housing chamber 212, and the cover 216 are arranged to optimize the space and provide better protection. The cover 216 is formed outside the elevator passage 12, which helps to maintain a lower temperature inside.

[0035] In another embodiment of the present invention, the plate rack operating mechanism 3 includes a push motor 31, a push rod 32, an active push plate unit 33 and a door unit 34; The push-out motor 31 and the door unit 34 are disposed on opposite sides of the exterior of the cover 216 to correspond to the position of the plate rack 200. The output shaft of the push motor 31 is coaxially connected to the push rod 32 toward the inside, and can push the plate rack 200; The active push plate unit 33 is connected to the inside of the door unit 34 and can be joined to the plate rack 200 .

[0036] The plate rack operating mechanism 3 acts on the plate rack 200 in the elevator passage 12, automatically pushing the plate rack 200 out of the basket 4, and a robot such as an AGV picks it up and transports it at the exit consisting of a door unit, making the semi-automatic loading and unloading process of the plate rack 200 more convenient and efficient.

[0037] The exit corresponds to a panel door that can be manually opened. One end of the push rod 32 is driven by the push motor 31, and the other end is a retractable free end, which pushes the plate rack 200 further out of the exit.

[0038] In a further embodiment of the present invention, the door unit 34 includes a fixed plate 341 and a door 342, the fixed plate 341 is fixedly connected to the inside of the door 342, and an access opening 3411 is provided in the middle of the fixed plate 341 for inserting and removing the plate rack 200.

[0039] In another embodiment of the present invention, the active push plate unit 33 includes a push plate 331 and a pulley 332. The rear end of the push plate 331 is hinged to the door 342, and the front end thereof passes through the access opening 3411 and is fitted with a pulley 332. The pulley 332 abuts against the basket 4 in the elevator walkway 12. The push plate 331 forms an inclined slope between the basket 4 and the door unit 34. When the push rod 32 pushes the plate rack 200 under the action of the pulley 332, the plate rack 200 moves up along the pulley 332 and enters the access opening 3411. Then, the door 342 can be opened manually or with the help of a robot such as an AGV to transport the plate rack 200.

[0040] In another embodiment of the present invention, the basket 4 is mounted in the low-temperature storage tank 1 by a rotating cylinder storage mechanism 5, and the basket 4 can move through the loading and unloading passage 11 and the lifting passage 12, and rotate within the low-temperature storage tank 1.

[0041] In another embodiment of the present invention, the rotating cylinder storage mechanism 5 includes a turntable 51 and a basket cover 52, and the basket cover 52 is attached to the outer periphery of the turntable 51 and can be docked with the elevator passage 12 for rotation.

[0042] The functions of the basket cover 52 are: 1) to guide the up and down movement of the basket 4, ensuring the verticality of the ascent and descent, and improving the accuracy of the subsequent loading and unloading of the plate rack 200; 2) to prevent the plate rack 200 stored in the basket 4 from sliding sideways, which would cause the basket 4 to tilt when transferring liquid nitrogen tanks or performing related operations, and prevent the plate rack 200 inside the basket from sliding out; the basket cover 52 is installed on the outside, which can prevent the basket 4 from sliding sideways to a certain extent.

[0043] The basket, basket cover 52, and turntable 51 form a quick-detachable sample storage turntable, which allows the basket 4 to be quickly removed and the basket 4 storing the samples to be quickly transferred, ensuring mobility and allowing for quick transfer when the storage equipment faces problems such as power outages or nitrogen gas replenishment.

[0044] In a further embodiment of the present invention, when the low-temperature storage tank 1 is in a sample vapor storage environment, a plurality of nitrogen passage holes 521 are provided on the side of the hanging basket cover 52, and when the low-temperature storage tank 1 is in a sample liquid phase storage environment, the liquid nitrogen level does not exceed the height of the upper surface of the hanging basket cover 52.

[0045] If the sample is stored in a gaseous state, the nitrogen passage holes 521 on the side of the basket cover 52 allow sufficient contact between the liquid nitrogen and the plate rack 200 storing the samples, ensuring that the samples are continuously stored in an extremely low temperature environment. If the sample is stored in a liquid state, the liquid nitrogen level does not exceed the height of the upper surface of the basket cover 52, ensuring that the liquid nitrogen does not enter the basket 4. This allows the samples to be stored when the basket 4 is in a liquid phase, and similarly ensures that the samples are continuously stored in an extremely low temperature environment.

[0046] In the prior art, cryogenic sample storage methods are primarily divided into liquid-phase freezing and vapor-phase freezing. Liquid-phase freezing involves directly immersing biological samples in liquid nitrogen and preserving them at -196°C. Vapor-phase freezing involves simply pouring liquid nitrogen into the bottom of a liquid nitrogen tank, preventing the biological samples from coming into contact with the liquid nitrogen and preserving the samples at temperatures below -150°C. However, in the prior art, whether liquid-phase or vapor-phase freezing, the liquid nitrogen or the nitrogen gas released from the liquid nitrogen acts directly on the container, i.e., the cryopreservation tube. This means that liquid-phase freezing carries the risk of tube rupture and cross-contamination, which is unfavorable for the safe preservation of biological samples. In the case of vapor-phase freezing, the temperature difference between the top and bottom of the liquid nitrogen tank is not uniform, and frequent sample insertion and removal can cause the temperature at the top of the liquid nitrogen tank to fluctuate. Furthermore, vapor-phase freezing requires limited liquid nitrogen storage capacity and frequent liquid supply.

[0047] The present invention discloses different embodiments for liquid-phase frozen storage and vapor-phase frozen storage in two situations that differ from the prior art.

[0048] In the case of gas-phase freezing storage, as shown in Figure 13, a basket cover is provided, with multiple nitrogen passage holes on each side of the basket cover, and the liquid nitrogen is located below the basket cover and does not directly contact the basket cover. The liquid nitrogen is provided at the bottom, and nitrogen gas is used to freeze and store biological samples without direct contact with the basket. That is, the biological samples do not come into contact with the liquid nitrogen, eliminating the risk of tube rupture and cross-contamination. To a certain extent, the basket cover stabilizes the removal of the basket and also has a certain effect on the evaporation and uniform distribution of nitrogen gas.

[0049] In the case of liquid-phase freezing storage, as shown in Figure 14, each side of the basket cover is closed and the top is open, and the liquid nitrogen is provided around the periphery of the basket cover, with the height of the liquid nitrogen being lower than the height of the basket cover. The lower part of the basket cover 52 has a sealed structure, and the basket 5 is housed within the basket cover 52, with the basket cover 52 separating the biological sample from the liquid nitrogen.

[0050] The above-described embodiment of this example provides a liquid nitrogen blocking structure for the basket cover 52, combining the advantages of liquid-phase freezing storage and vapor-phase freezing storage while eliminating the drawbacks of both. The lower part of the basket cover 52 is sealed, and the liquid nitrogen in the cryogenic storage tank 1 is poured to a high level so as not to flood the upper opening of the basket cover 52. The basket 5 is contained within the basket cover 52, and the basket cover 52 separates the biological sample from the liquid nitrogen. This structure eliminates the risk of tube rupture and cross-contamination, while ensuring that the biological sample is stored at a more uniform and stable temperature. Furthermore, the liquid nitrogen storage capacity is large, allowing for longer static storage.

[0051] In another embodiment of the present invention, the turntable 51 includes a rotary drive motor 511 and a turntable body 512, the rotary drive motor 511 is connected to the upper center of the turntable body 512 by a central rotation shaft 513, a plurality of guide members 514 are uniformly arranged on all four sides of the turntable body 512, and locking members 515 are arranged between the guide members 514 to detachably attach the basket cover 52 and the basket 4 to the turntable body 512.

[0052] As a specific implementation of the quick removal structure, in the turntable 51, the rotary drive motor 511 drives the central rotation axis 513, which further rotates the turntable body 512 around the central axis, and the carrying basket 4 and the carrying basket cover 52 are flexibly and securely attached to the turntable body 512 by the locking member 515 and the guide member 514, respectively.

[0053] In a further embodiment of the present invention, the guide member 514 includes an axially arranged guide groove 5141, which is slidably connected to the guide rail 522 on the side of the basket cover 52, and the locking member 515 includes a boss 5151 and a hook hole 5151-1 drilled in the boss 5151, which is connected to cooperate with the side hook 413 on the upper end of the basket 4.

[0054] The guide groove 5141 extending in the axial direction not only allows for quick attachment and detachment but also meets the axial linear accuracy after connection. The boss 5151 spaced apart from the guide groove 5141 rationally utilizes the upper outer ring of the turntable body 512, and the hook hole 5151-1 guides the carrying basket cover 52 to quickly insert the carrying basket 4 and lock it in position.

[0055] In another embodiment of the present invention, the hanging basket 4 includes a hanging basket body 41, and the hanging basket body 41 has a plurality of vertically arranged storage grooves 411 for accommodating the plate racks 200, each storage groove 411 having a pair of open sides, and an upper hook portion 412 on the top of the hanging basket body 41.

[0056] The plate rack 200 can be stably inserted and removed horizontally from the side of the storage groove 411. The upper hook portion 412 is connected to the turntable body 512 so as to be linked with a locking member.

[0057] In another embodiment of the present invention, the upper hook portion 412 has symmetrically arranged locking claws 4121, and a locking opening 4122 is formed between the two locking claws 4121, which is connected to the hook 221 of the connecting member 22 so as to cooperate with the hook 221. The hook 221 enters the locking opening 4122 from the lower side and abuts against the front end of the locking claw 4121 by an upward pulling force, thereby realizing quick positioning.

[0058] In another embodiment of the present invention, the latching opening 4122 and the hook 221 are both tapered in shape, which increases the contact area and makes the docking more stable and reliable.

[0059] Finally, the above embodiments do not limit the technical solutions of the present invention, but are merely for the purpose of illustrating them. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will understand that the technical solutions described in the above embodiments may still be modified or some of the technical features may be equivalently replaced, and the essence of the corresponding technical solutions will not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention due to such modifications or replacements. [Explanation of symbols]

[0060] 1. Cryogenic storage tank, 1-1 Vacuum tank body, 1-2 lid, 1-2-1 Heating plate, 11. Inlet / outlet passage hole, 12 elevators, 2. Basket lifting mechanism, 21 driving member, 211 lifting drive motor, 212 gears, 213 chain, 214 Chain housing chamber, 215 gear housing chamber, 216 covers, 22 Joint members, 221 Hook, 23 Tank stopper, 3 Plate rack operating mechanism, 31 extrusion motor, 32 push rods, 33 activity push plate unit, 331 push plate, 332 pulley, 34 door units, 341 Fixation plate, 3411 Inlet / outlet, 342 doors, 4 hanging baskets, 41 Hanging basket body, 411 storage trenches, 412 upper hook part, 4121 Locking claws, 4122 locking opening, 413 Side Hook, 5. Rotating cylinder storage mechanism, 51 turntable, 511 rotary drive motor; 512 turntable body, 513 central axis of rotation, 514 guide member, 5141 Guide groove, 515 locking member, 5151 Boss, 5151-1 hook hole, 52 Hanging basket cover, 521 Nitrogen passage hole, 522 guide rails, 6 Nitrogen supply mechanism, 61 Nitrogen passage pipe, 611 valve unit, 100 Semi-automatic hole-plate sample loading / unloading device, 200 Plate Rack

Claims

1. An automated hole-plate sample loading and unloading device, comprising a cryogenic storage tank, a basket lifting mechanism, and a plate rack operating mechanism; An access hole is opened at the top of the low-temperature storage tank, and an elevator passage is connected above the access hole, so that the basket can move up and down within the elevator passage; The basket lifting mechanism is provided at the top of the lifting passage, and is capable of removing the basket; A semi-automatic hole-plate type sample loading and unloading device, characterized in that the plate rack operating mechanism is provided at the bottom of the elevator passage, and is capable of pushing the plate rack in the basket out of the elevator passage.

2. 2. The semi-automatic hole-plate sample insertion and removal device according to claim 1, wherein the basket lifting mechanism comprises a driving member, a connecting member and a tank stopper, one end of the connecting member is connected to the driving member for transmission and the other end can be docked with the basket, and the tank stopper is provided on the top of the other end and corresponds to the insertion and removal passage hole.

3. The driving member includes a lifting drive motor, a gear, and a chain, the lifting drive motor being connected to one end of the chain, the other end of the chain being meshed with the gear and then connected to the hook; 3. The semi-automatic hole-plate type sample insertion and removal device according to claim 2, wherein the connecting member includes a hook.

4. The driving member further includes a chain housing chamber, a gear housing chamber, and a cover, the lifting passage is provided in the cover, the gear housing chamber communicates with the tip of the cover, and the communication housing chamber communicates with the side of the gear housing chamber; 4. The semi-automatic hole-plate type sample loading and unloading device according to claim 3, wherein the lifting drive motor and the chain are installed in a chain housing chamber, the gear is fixed in a gear housing chamber, and the front end of the chain, the tank bung and the hook are installed in a cover.

5. The plate rack operating mechanism includes a push motor, a push rod, an active push plate unit and a door unit; The push-out motor and the door unit are disposed on opposite sides of the exterior of the cover to correspond to the position of the plate rack; The output shaft of the extrusion motor is coaxially connected to the push rod toward the inside, and can push the plate rack; 5. The semi-automatic hole-plate sample loading and unloading device according to claim 4, wherein the active push plate unit is connected to the inside of the door unit and can be connected to a plate rack.

6. 6. The semi-automatic whole-plate sample loading and unloading device according to claim 5, wherein the door unit comprises a fixed plate and a door, the fixed plate being fixedly connected to the inside of the door, and an access opening for loading and unloading a plate rack is provided in the middle of the fixed plate.

7. The semi-automatic hole-plate type sample loading and unloading device according to claim 6, wherein the active push plate unit comprises a push plate and a pulley, the rear end of the push plate is hinged to the door, the front end of the push plate passes through the loading and unloading opening and is fitted with a pulley, and the pulley abuts against a basket in the lifting passage.

8. 8. The semi-automatic hole-plate type sample loading and unloading device according to claim 7, wherein the basket is mounted in the cryogenic storage tank by a rotating cylinder type storage mechanism, and the basket can move in the lifting passage through the loading and unloading passage hole, and rotate and spin within the cryogenic storage tank.

9. 9. The semi-automatic hole-plate type sample loading and unloading device according to claim 8, wherein the rotating cylinder type storage mechanism comprises a turntable and a basket cover, the basket cover being attached to the outer periphery of the turntable and capable of being docked to the lifting passage so as to rotate.

10. 10. The semi-automatic hole-plate type sample transfer device according to claim 9, wherein when the cryogenic storage tank is in a sample vapor storage environment, the side of the hanging basket cover is provided with a plurality of nitrogen passage holes, and when the cryogenic storage tank is in a sample liquid storage environment, the liquid nitrogen level does not exceed the height of the upper end surface of the hanging basket cover.

11. 11. The semi-automatic hole-plate type sample insertion and removal device according to claim 10, wherein the turntable comprises a rotary drive motor and a turntable body, the rotary drive motor being connected to the upper center of the turntable body by a central rotation shaft, a plurality of guide members being uniformly provided on all four sides of the periphery of the turntable body, and a locking member being provided between the guide members for detachably attaching the basket cover and the basket to the turntable body.

12. 12. The semi-automatic hole-plate type sample insertion and removal device according to claim 11, wherein the guide member includes an axially arranged guide groove and is slidably connected to a guide rail on the side of the basket cover, and the locking member includes a boss and a hook hole formed in the boss and is connected to cooperate with a side hook on the upper end of the basket.

13. 13. The semi-automatic hole-plate type sample insertion and removal device of claim 12, wherein the basket comprises a basket body, and the basket body has a plurality of vertically arranged storage grooves for receiving plate racks, each storage groove having a pair of open sides, and the top of the basket body further has an upper hook portion.

14. 14. The semi-automatic hole-plate type sample insertion and removal device according to claim 13, wherein the upper hook portion has symmetrically arranged locking claws, and a locking opening is formed between the two locking claws, and the locking opening is connected to the hook of the connecting member.

15. 15. The semi-automatic hole-plate type sample insertion and removal device according to claim 14, wherein the engaging opening and the hook are both forward tapered in shape.

16. 11. The semi-automatic hole-plate type sample insertion and removal device according to claim 10, wherein each side of the hanging basket cover has a plurality of nitrogen passage holes, and the liquid nitrogen is provided below the hanging basket cover and does not directly contact the hanging basket cover.

17. 11. The semi-automatic hole-plate type sample insertion and removal device according to claim 10, wherein each side of the hanging basket cover is a closed surface and the top end surface is an open end, the liquid nitrogen is provided around the periphery of the hanging basket cover, and the height of the liquid nitrogen is lower than the height of the hanging basket cover.

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