CN208987624U - A kind of protection of liquid nitrogen takes pipe device - Google Patents

Abstract

The utility model relates to a kind of protection of liquid nitrogen to take pipe device, comprising: cryopreservation tube is for storing biological sample；Lifting suction tube device includes rack gear, the suction nozzle buffer unit below rack gear, the suction nozzle below suction nozzle buffer unit, the ventilating joint above rack gear and for pumping, is equipped with air intake passage inside rack gear；Driving device is set to shell side and one end passes through shell and is flexibly connected with rack gear；Tube body is sheathed on the outside of lifting suction tube device and is located at below driving device；It mends nitrogen device one end to be sheathed on the outside of insulating tube, vertical liquid nitrogen channel and lateral liquid nitrogen channel communicate, and mend nitrogen pipe upper end and communicate with lateral liquid nitrogen channel, mend nitrogen device and pass through fastener and tube body clamping or disassembly.The utility model relates to device solve the problems, such as the cold insulation in cryopreservation tube access transfer process, reduce cryopreservation tube and be exposed to room temperature environment risk in access transfer process, improve the access quality and efficiency of cryopreservation tube, reduce security risk.

Description

A kind of protection of liquid nitrogen takes pipe device

Technical field

The utility model belongs to the technical field that cryopreservation tube is drawn or stored, in particular to a kind of protection of liquid nitrogen takes pipe to fill It sets.

Background technique

Currently, automatic operation has been realized in the access of biological sample cryopreservation tube, and vacsorb take Guan Shijing frequently with Mode.Conventional pipe device of singly drawing includes a tube body, the suction nozzle below tube body, and tube body side is equipped with gas-tpe fitting, gas The pumping of pipe fitting side, so that cryopreservation tube is sucked in suction nozzle, realizes the absorption function of cryopreservation tube.Meanwhile in order to guarantee activity, biology Sample is often stored in profound hypothermia environment；And when taking pipe, sample can be made to be exposed to room temperature environment, the acute variation of temperature can be to biology Sample causes to damage.

The operating method of the above common access cryopreservation tube, which can not achieve, carries out access cryopreservation tube according to user's demand, has Have inconvenience, and be easily exposed to easily cause the damage of biological sample at room temperature in the access transfer process of cryopreservation tube, cause through Ji loss.

Utility model content

The technical issues of the utility model needle is intended to provide a kind of protection of liquid nitrogen and takes pipe device, solution is to realize to solve to freeze Pipe accesses the cold insulation problem in transfer process, reduces cryopreservation tube and is exposed to room temperature environment risk in access transfer process, The access quality and efficiency of cryopreservation tube are improved, security risk is reduced.

Realize above-mentioned purpose, the technical solution of the utility model is:

A kind of protection of liquid nitrogen is provided and takes pipe device, comprising:

Cryopreservation tube, for storing biological sample；

Go up and down suction tube device, the lifting suction tube device include rack gear, the suction nozzle buffer unit below the rack gear, Suction nozzle below the suction nozzle buffer unit and for drawing cryopreservation tube, leading to above the rack gear and for pumping Gas connector, the rack gear inside are equipped with air intake passage；

Shell covers on the outside of the lifting suction tube device, and the housing sidewall is equipped with vertical kidney slot；

Driving device, is set to the shell side and one end passes through shell and is flexibly connected with rack gear, described for driving Rack gear is moved upwardly or downwardly, and the ventilating joint is moved upwardly or downwardly in vertical waist-shaped hole；

Tube body is sheathed on the outside of the lifting suction tube device and is located at below driving device, and the tube body includes being sheathed on Liquid nitrogen inner sleeve on the outside of the rack gear, set on liquid nitrogen inner sleeve side benefit nitrogen pipe, be sheathed on the liquid nitrogen inner sleeve The liquid nitrogen outer tube in outside, the insulating tube being sheathed on the outside of the liquid nitrogen outer tube, the liquid nitrogen inner sleeve and liquid nitrogen outer tube Lower section is equipped with internal and external casing pedestal, internal between the liquid nitrogen inner sleeve, liquid nitrogen outer tube and internal and external casing pedestal to form liquid nitrogen Chamber；

Nitrogen device is mended, benefit nitrogen device one end is sheathed on the outside of insulating tube, and the benefit nitrogen device includes liquid nitrogen cup and sets Liquid nitrogen pipes seat below the liquid nitrogen cup, the liquid nitrogen pipes seat inside is equipped with vertical liquid nitrogen channel and lateral liquid nitrogen is logical Road, the vertical liquid nitrogen channel and lateral liquid nitrogen channel communicate, and bottom end surface is equipped with cup aperture, the cup aperture in the liquid nitrogen cup It is communicated with vertical liquid nitrogen channel upper open end, the benefit nitrogen pipe upper end is communicated with lateral liquid nitrogen channel, and the benefit nitrogen device passes through Fastener and tube body clamping or disassembly.

Further, above-mentioned protection of liquid nitrogen takes in pipe device, further includes:

Limit switch, set on the open end side of the vertical kidney slot.

Further, above-mentioned protection of liquid nitrogen takes in pipe device, and the limit switch is two, is respectively arranged on the vertical waist Two open ends side above and below shape hole, the extreme position for moving upwards or moving downward for limiting the rack gear.

Further, above-mentioned protection of liquid nitrogen takes in pipe device, and the shell includes rack housing, and the vertical waist-shaped hole is set to On rack housing side wall；

The cover above the rack housing；

Gear fixing seat below the rack housing；

Elastic washer below the gear fixing seat, the gear fixing seat inner hollow and one end is equipped with Opening；

It is sheathed on outside the rack gear and passes through the liner clamp of gear fixing seat, the liner clamp side is equipped with circular through hole.

Further, above-mentioned protection of liquid nitrogen takes in pipe device, the driving device include motor and be set to the motor one The gear of side, the wheel and rack engagement rotation connection, the gear are connect by circular through hole with racks turn.

Further, above-mentioned protection of liquid nitrogen takes in pipe device, described to be flexibly connected as rotation connection.

Further, above-mentioned protection of liquid nitrogen takes in pipe device, and the suction nozzle buffer unit includes suction nozzle movable axis, is fixedly arranged on Suction nozzle fixing seat below the rack gear, the spring below the suction nozzle fixing seat, the suction nozzle movable axis are set to suction nozzle In fixing seat, the spring between suction nozzle movable axis and suction nozzle, the suction nozzle movable axis in suction nozzle fixing seat upwards or It moves downward, the action of giving of cryopreservation tube is drawn for the suction nozzle.

Further, above-mentioned protection of liquid nitrogen takes in pipe device, and the material of the insulating tube is polytetrafluoroethylene (PTFE).

Further, above-mentioned protection of liquid nitrogen takes in pipe device, and the vertical liquid nitrogen channel is formed with lateral liquid nitrogen channel Channel is in " " " shape.

Further, above-mentioned protection of liquid nitrogen takes in pipe device, and the benefit nitrogen pipe is in " " " shape.

In the utility model, comprising: cryopreservation tube, for storing biological sample；Go up and down suction tube device, the lifting suction pipe dress Set the suction nozzle buffer unit including rack gear, below the rack gear, below the suction nozzle buffer unit and for drawing The suction nozzle of cryopreservation tube, the ventilating joint above the rack gear and for pumping, the rack gear inside are equipped with air intake passage；Shell Body covers on the outside of the lifting suction tube device, and the housing sidewall is equipped with vertical kidney slot；Driving device is set to described Shell side and one end pass through shell and are flexibly connected with rack gear, described logical for driving the rack gear to be moved upwardly or downwardly Gas connector is moved upwardly or downwardly in vertical waist-shaped hole；Tube body is sheathed on the outside of the lifting suction tube device and is located at driving Below device, the tube body includes being sheathed on liquid nitrogen inner sleeve on the outside of the rack gear, set on liquid nitrogen inner sleeve side Nitrogen pipe, the liquid nitrogen outer tube being sheathed on the outside of the liquid nitrogen inner sleeve, the insulating tube being sheathed on the outside of the liquid nitrogen outer tube are mended, It is equipped with internal and external casing pedestal below the liquid nitrogen inner sleeve and liquid nitrogen outer tube, the liquid nitrogen inner sleeve, liquid nitrogen outer tube and interior It is internal between outer tube pedestal to form liquid nitrogen chamber；Nitrogen device is mended, benefit nitrogen device one end is sheathed on the outside of insulating tube, the benefit Nitrogen device includes liquid nitrogen cup and the liquid nitrogen pipes seat below the liquid nitrogen cup, is equipped with vertical liquid inside the liquid nitrogen pipes seat Nitrogen channel and lateral liquid nitrogen channel, the vertical liquid nitrogen channel and lateral liquid nitrogen channel communicate, bottom end surface in the liquid nitrogen cup It is equipped with cup aperture, the cup aperture is communicated with vertical liquid nitrogen channel upper open end, the benefit nitrogen pipe upper end and lateral liquid nitrogen channel phase Logical, the benefit nitrogen device passes through fastener and tube body clamping or disassembly；

The progress effect having of the utility model:

1. internal between the liquid nitrogen inner sleeve, liquid nitrogen outer tube and internal and external casing pedestal form liquid nitrogen chamber, the benefit nitrogen Pipe is set to liquid nitrogen inner sleeve side, and the benefit nitrogen pipe upper end is communicated with lateral liquid nitrogen channel, during realizing cryopreservation tube transhipment It is continuously cryopreservation tube and builds low temperature environment, reduce cryopreservation tube and be exposed to room temperature environment risk in access transfer process, mention The access quality and efficiency of high cryopreservation tube；

2. the heat-insulating cover is set on the outside of liquid nitrogen outer tube, the material of the insulating tube is polytetrafluoroethylene (PTFE), is solved Cold insulation problem in cryopreservation tube access transfer process, reduces security risk.

Detailed description of the invention

Fig. 1 is that the protection of liquid nitrogen of the utility model takes pipe device structural schematic diagram；

Fig. 2 is that the protection of liquid nitrogen of the utility model takes pipe device separate structure schematic diagram；

Fig. 3 is that the protection of liquid nitrogen of the utility model takes pipe device top view；

Fig. 4 is the A-A cross-sectional view of Fig. 3；

Fig. 5 is the insulating tube separate structure schematic diagram of the utility model；

Fig. 6 is the liquid nitrogen cup separate structure schematic diagram of the utility model.

Label declaration:

1- goes up and down suction tube device, 2- shell, 3- driving device, 4- tube body, 5- benefit nitrogen device, 6- limit switch；11- tooth Item, 12- suction nozzle buffer unit, 13- suction nozzle, 14- ventilating joint；

111- air intake passage；

121- suction nozzle movable axis, 122- suction nozzle fixing seat, 123- spring；

21- rack housing, 22- the cover, 23- gear fixing seat, 24- elastic washer, 25- liner clamp；

31- motor, 32- gear；

41- liquid nitrogen inner sleeve, 42- mend nitrogen pipe, 43- liquid nitrogen outer tube, 44- insulating tube；

411- internal and external casing pedestal；

431- liquid nitrogen chamber；

51- liquid nitrogen cup, 52- liquid nitrogen pipes seat；

The vertical liquid nitrogen channel 521-, 522- transverse direction liquid nitrogen channel, 523- fastener；

100- cryopreservation tube.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing, the present embodiment is with the utility model technical side Implemented under premised on case, the detailed implementation method and specific operation process are given, but the protection model of the utility model It encloses and is not limited to the following embodiments.

As shown in figures 1 to 6, the utility model provides a kind of protection of liquid nitrogen and takes pipe device, comprising:

Cryopreservation tube 100, for storing biological sample；

Go up and down suction tube device 1, lifting suction tube device 1 include rack gear 11, set on the lower section of rack gear 11 suction nozzle buffer unit 12, Set on 12 lower section of suction nozzle buffer unit and it is used to draw the suction nozzle 13 of cryopreservation tube 100, above rack gear 11 and for pumping Ventilating joint 14 is equipped with air intake passage 111 inside rack gear 11；

Shell 2, covers at 1 outside of lifting suction tube device, and 2 side wall of shell is equipped with vertical kidney slot；

Driving device 3, is set to 2 side of shell and one end passes through shell 2 and is flexibly connected with rack gear 11, for driving The rack gear 11 is moved upwardly or downwardly, and ventilating joint 14 is moved upwardly or downwardly in vertical waist-shaped hole, ventilating joint 14 1 Logical outside condenser is terminated, by compression extraction air, gas enters air intake passage 111 outside suction nozzle 13, is sucked to realize Cryopreservation tube 100, and, by suction nozzle buffer unit 12, realizes that the cryopreservation tube 100 on drawing moves up and slow down impact, reduce peace Full hidden danger；

Tube body 4 is sheathed on 1 outside of lifting suction tube device and is located at 3 lower section of driving device, and tube body 4 includes being sheathed on rack gear The liquid nitrogen inner sleeve 41 in 11 outsides, set on 41 side of liquid nitrogen inner sleeve benefits nitrogen pipe 42, be sheathed on the outside of liquid nitrogen inner sleeve 41 Liquid nitrogen outer tube 43, the insulating tube 44 for being sheathed on 43 outside of liquid nitrogen outer tube, 43 lower section of liquid nitrogen inner sleeve 41 and liquid nitrogen outer tube It is internal between liquid nitrogen inner sleeve 41, liquid nitrogen outer tube 43 and internal and external casing pedestal 411 to form liquid equipped with internal and external casing pedestal 411 Nitrogen chamber 431；

Nitrogen device 5 is mended, 5 one end of nitrogen device is mended and is sheathed on 44 outside of insulating tube, nitrogen device 5 is mended and includes liquid nitrogen cup 51 and be set to The liquid nitrogen pipes seat 52 of the lower section of liquid nitrogen cup 51 is equipped with vertical liquid nitrogen channel 521 and lateral liquid nitrogen channel inside liquid nitrogen pipes seat 52 522, vertical liquid nitrogen channel 521 and lateral liquid nitrogen channel 522 communicate, and bottom end surface is equipped with cup aperture, cup in the liquid nitrogen cup 51 Hole is communicated with vertical 521 upper open end of liquid nitrogen channel, and 42 upper end of benefit nitrogen pipe is communicated with lateral liquid nitrogen channel 522, mends nitrogen dress It sets 5 and passes through fastener 523 and 4 clamping of tube body or disassembly, liquid nitrogen is held in liquid nitrogen cup 51, liquid nitrogen passes through vertical liquid nitrogen channel 521 Enter in liquid nitrogen chamber 431 with lateral liquid nitrogen channel 522, the cryopreservation tube 100 to extract up provides low temperature environment, realizes cryopreservation tube It is continuously cryopreservation tube during transhipment and builds low temperature environment, reduces cryopreservation tube and is exposed to room temperature ring in access transfer process Border risk improves the access quality and efficiency of cryopreservation tube.

Preferably, as shown in 2,3, further includes:

Limit switch 6, set on the open end side of the vertical kidney slot.

Preferably, as shown in Figure 2,3, limit switch 6 is two, is respectively arranged on vertical kidney slot two open ends one up and down Side, the extreme position for moving upwards or moving downward for limiting rack gear 11.

Preferably, as shown in Figure 1, 2, shell 2 includes rack housing 21, and vertical waist-shaped hole is set on 21 side wall of rack housing；

The cover 22 above rack housing 21；

Gear fixing seat 23 set on 21 lower section of rack housing；

Elastic washer 24 set on 23 lower section of gear fixing seat, 23 inner hollow of gear fixing seat and one end, which are equipped with, to be opened Mouthful；

It is sheathed on outside rack gear 11 and passes through the liner clamp 25 of gear fixing seat 23,25 side of liner clamp is equipped with circular through hole.

Preferably, as shown in Fig. 1,2,4, driving device 3 includes motor 31 and the gear 32 set on 31 side of motor, gear 32 connect with 11 engagement rotation of rack gear, and gear 32 is rotatablely connected by circular through hole and rack gear 11, due on 25 side wall of liner clamp Circular through hole so that gear 32 just can engage connection with rack gear 11 by circular through hole.

Preferably, as shown in Figure 2,4, motor 31 is worm gear speed-reducing motor.

Preferably, as shown in Figure 2,3, limit switch 6 is contact limit switch.

Preferably, as shown in Fig. 2, being flexibly connected as rotation connection.

Preferably, as shown in Figure 2,4, suction nozzle buffer unit 12 includes suction nozzle movable axis 121, is fixedly arranged on 11 lower section of rack gear Suction nozzle fixing seat 122, the spring 123 set on 122 lower section of suction nozzle fixing seat, suction nozzle movable axis 121 are set to suction nozzle fixing seat 122 It is interior, spring 123 between suction nozzle movable axis 121 and suction nozzle 13, suction nozzle movable axis 121 in suction nozzle fixing seat 122 upwards or It moves downward, the action of giving of cryopreservation tube 100 is drawn for suction nozzle 13, reduce impact when suction nozzle 13 moves upwards, reduce peace Full hidden danger.

Preferably, as shown in Fig. 2,4,5, the material of insulating tube 44 is polytetrafluoroethylene (PTFE), has the function of good cold insulation.

Preferably, as shown in figure 4, the channel that vertical liquid nitrogen channel 521 and lateral liquid nitrogen channel 522 are formed is in " " " shape, it will Liquid nitrogen passes through " " from top liquid nitrogen cup 51 " shape channel enters in liquid nitrogen chamber 431.

Preferably, as shown in Fig. 2,4,5, mend nitrogen pipe 42 in " " " shape, due to mend the unique shape of nitrogen pipe 42 just with it is perpendicular The channel formed to liquid nitrogen channel 521 and lateral liquid nitrogen channel 522 communicates, and realizes that the liquid nitrogen in liquid nitrogen cup 51 rapidly enters liquid nitrogen In chamber 431, cold insulation is carried out for the cryopreservation tube 100 on extracting, reduces the risk of cryopreservation tube exposure at room temperature.

As shown in figures 1 to 6, protection of liquid nitrogen takes the working principle of pipe device:

Firstly, protection of liquid nitrogen takes pipe device to be installed on three coordinates, the mobile control of three coordinates is by the aobvious of external outside Display screen control, display screen take pipe device to be electrically connected with three coordinates, protection of liquid nitrogen respectively, and display screen is controlled by PLC, ventilating joint 14 1 termination outside condensers, draw cryopreservation tube 100 for being evacuated, first fill into liquid nitrogen in liquid nitrogen cup 51, in liquid nitrogen cup 51 Liquid nitrogen rapidly enters in liquid nitrogen chamber 431, and by 44 cold insulation of insulating tube, when user prepares to extract cryopreservation tube 100, external is aobvious Display screen, which controls three coordinates, carries the liquid nitrogen container top that protection of liquid nitrogen takes pipe device to be moved to storage cryopreservation tube 100, and display screen opens Dynamic motor 31, drive rack 11 moves downward, when the upper end of rack gear 11 approaches and contacts limit switch 6, disconnecting circuit, so that Motor 31 stalls, this 11 stop motion of hour rack；

Outside condenser is evacuated by ventilating joint 14 into air intake passage 111, so that the cryopreservation tube stored in liquid nitrogen container 100 are inhaled on suction nozzle 13；

At this point, the starting reversion of motor 31, so that the cryopreservation tube that rack gear 11 carries lower section moves upwards, when 11 upper end of rack gear When approaching and contacting limit switch 6, motor 31 is stalled, and rack gear 11 stops, and the cryopreservation tube 100 that suction nozzle 13 is sucked at this time has been in liquid In nitrogen inner sleeve 41, three coordinates, which are restarted to carry protection of liquid nitrogen pipe device is taken to be moved to user, needs the region stored to carry out Corresponding experiment or storage.

In conclusion in the utility model, comprising: cryopreservation tube 100, for storing biological sample；Suction tube device 1 is gone up and down, Suction tube device 1 is gone up and down to include rack gear 11, the suction nozzle buffer unit 12 below rack gear 11, be set to 12 lower section of suction nozzle buffer unit And it is used to draw the suction nozzle 13 of cryopreservation tube 100, the ventilating joint 14 above rack gear 11 and for pumping, it is set inside rack gear 11 There is air intake passage 111；Shell 2, covers at 1 outside of lifting suction tube device, and 2 side wall of shell is equipped with vertical kidney slot；Driving dress 3 are set, 2 side of shell is set to and one end passes through shell 2 and is flexibly connected with rack gear 11, for driving the rack gear 11 upwards Or move downward, ventilating joint 14 is moved upwardly or downwardly in vertical waist-shaped hole, and external compression is connected in 14 one end of ventilating joint Machine, by compression extraction air, gas enters air intake passage 111 outside suction nozzle 13, and cryopreservation tube 100 is sucked to realize, and, lead to Suction nozzle buffer unit 12 is crossed, realizes that the cryopreservation tube 100 on drawing moves up and slows down impact, reduce security risk；Tube body 4, set Set on 1 outside of lifting suction tube device and it is located at 3 lower section of driving device, tube body 4 includes the liquid nitrogen inner sleeve for being sheathed on 11 outside of rack gear Pipe 41, set on 41 side of liquid nitrogen inner sleeve benefit nitrogen pipe 42, be sheathed on the outside of liquid nitrogen inner sleeve 41 liquid nitrogen outer tube 43, be arranged Insulating tube 44 in the outside of liquid nitrogen outer tube 43 is equipped with internal and external casing pedestal below liquid nitrogen inner sleeve 41 and liquid nitrogen outer tube 43 411, it is internal between liquid nitrogen inner sleeve 41, liquid nitrogen outer tube 43 and internal and external casing pedestal 411 to form liquid nitrogen chamber 431；Mend nitrogen device 5, it mends 5 one end of nitrogen device and is sheathed on 44 outside of insulating tube, mending nitrogen device 5 includes liquid nitrogen cup 51 and the liquid set on 51 lower section of liquid nitrogen cup Nitrogen pipeline seat 52 is equipped with vertical liquid nitrogen channel 521 and lateral liquid nitrogen channel 522, vertical liquid nitrogen channel inside liquid nitrogen pipes seat 52 521 communicate with lateral liquid nitrogen channel 522, and bottom end surface is equipped with cup aperture, cup aperture and vertical liquid nitrogen channel in the liquid nitrogen cup 51 521 upper open ends communicate, and 42 upper end of benefit nitrogen pipe is communicated with lateral liquid nitrogen channel 522, mend nitrogen device 5 and pass through fastener 523 With 4 clamping of tube body or disassembly, liquid nitrogen is held in liquid nitrogen cup 51, liquid nitrogen passes through vertical liquid nitrogen channel 521 and lateral liquid nitrogen channel 522 Into in liquid nitrogen chamber 431, the cryopreservation tube 100 to extract up provides low temperature environment, continues during realizing cryopreservation tube transhipment Low temperature environment is built for cryopreservation tube, cryopreservation tube is reduced and is exposed to room temperature environment risk in access transfer process, improve and freeze Deposit the access quality and efficiency of pipe.

Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies Within, then the application is also intended to include these modifications and variations.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are included in the utility model.It should not treat any reference in the claims as limiting Related claim.Furthermore, it is to be understood that one word of " comprising " does not exclude other units or steps, odd number is not excluded for plural number.Device The multiple units or device stated in claim can also be implemented through software or hardware by a unit or device.The One, the second equal words are used to indicate names, and are not indicated any particular order.

Claims (10)

1. a kind of protection of liquid nitrogen takes pipe device characterized by comprising

Cryopreservation tube (100), for storing biological sample；

It goes up and down suction tube device (1), lifting suction tube device (1) includes rack gear (11), the suction below the rack gear (11) Head buffer unit (12) is set to below the suction nozzle buffer unit (12) and is used to draw the suction nozzle (13) of cryopreservation tube (100), sets Ventilating joint (14) above the rack gear (11) and for pumping, the rack gear (11) is internal to be equipped with air intake passage (111)；

Shell (2) covers on the outside of the lifting suction tube device (1), and shell (2) side wall is equipped with vertical kidney slot；

Driving device (3), is set to the shell (2) side and one end passes through shell (2) and is flexibly connected with rack gear (11), is used for The rack gear (11) is driven to be moved upwardly or downwardly, the ventilating joint (14) is moved upwardly or downwardly in vertical waist-shaped hole；

Tube body (4) is sheathed on the outside of the lifting suction tube device (1) and is located at below driving device (3), tube body (4) packet The benefit nitrogen pipe for including the liquid nitrogen inner sleeve (41) being sheathed on the outside of the rack gear (11), being set to liquid nitrogen inner sleeve (41) side (42), it is sheathed on the liquid nitrogen outer tube (43) on the outside of the liquid nitrogen inner sleeve (41), is sheathed on the liquid nitrogen outer tube (43) outside Internal and external casing pedestal (411) are equipped with below the insulating tube (44) of side, the liquid nitrogen inner sleeve (41) and liquid nitrogen outer tube (43), institute State internal formation liquid nitrogen chamber (431) between liquid nitrogen inner sleeve (41), liquid nitrogen outer tube (43) and internal and external casing pedestal (411)；

It mends nitrogen device (5), described benefit nitrogen device (5) one end is sheathed on the outside of insulating tube (44), and the benefit nitrogen device (5) includes liquid Nitrogen cup (51) and the liquid nitrogen pipes seat (52) being set to below the liquid nitrogen cup (51), internal be equipped with of the liquid nitrogen pipes seat (52) are erected To liquid nitrogen channel (521) and lateral liquid nitrogen channel (522), the vertical liquid nitrogen channel (521) and lateral liquid nitrogen channel (522) phase Logical, the interior bottom end surface of the liquid nitrogen cup (51) is equipped with cup aperture, the cup aperture and vertical liquid nitrogen channel (521) upper open end phase Logical, the benefits nitrogen pipe (42) upper end is communicated with lateral liquid nitrogen channel (522), the benefit nitrogen device (5) pass through fastener (523) and Tube body (4) clamping or disassembly.

2. protection of liquid nitrogen according to claim 1 takes pipe device, which is characterized in that further include:

Limit switch (6), set on the open end side of the vertical kidney slot.

3. protection of liquid nitrogen according to claim 2 takes pipe device, which is characterized in that the limit switch (6) is two, point Not She Yu the vertical kidney slot up and down two open ends side, move upwards or move downward for limiting the rack gear (11) Extreme position.

4. protection of liquid nitrogen according to claim 1 takes pipe device, which is characterized in that the shell (2) includes rack housing (21), the vertical waist-shaped hole is set on rack housing (21) side wall；

The cover (22) above the rack housing (21)；

Gear fixing seat (23) below the rack housing (21)；

Elastic washer (24) below the gear fixing seat (23), gear fixing seat (23) inner hollow and one End face is equipped with opening；

It is sheathed on the rack gear (11) outside and passes through the liner clamp (25) of gear fixing seat (23), liner clamp (25) side is set There is circular through hole.

5. protection of liquid nitrogen according to claim 4 takes pipe device, which is characterized in that the driving device (3) includes motor (31) and be set to the motor (31) side gear (32), the gear (32) connect with rack gear (11) engagement rotation, described Gear (32) is rotatablely connected by circular through hole and rack gear (11).

6. protection of liquid nitrogen according to claim 1 takes pipe device, which is characterized in that described to be flexibly connected as rotation connection.

7. protection of liquid nitrogen according to claim 1 takes pipe device, which is characterized in that the suction nozzle buffer unit (12) includes Suction nozzle movable axis (121), is set to the suction nozzle fixing seat at the suction nozzle fixing seat (122) being fixedly arranged below the rack gear (11) (122) spring (123) below, the suction nozzle movable axis (121) are set in suction nozzle fixing seat (122), spring (123) position Between suction nozzle movable axis (121) and suction nozzle (13), the suction nozzle movable axis (121) in suction nozzle fixing seat (122) upwards or It moves downward, the action of giving of cryopreservation tube (100) is drawn for the suction nozzle (13).

8. protection of liquid nitrogen according to claim 1 takes pipe device, which is characterized in that the material of the insulating tube (44) is poly- Tetrafluoroethene.

9. protection of liquid nitrogen according to claim 1 takes pipe device, which is characterized in that the vertical liquid nitrogen channel (521) and The channel that lateral liquid nitrogen channel (522) is formed is in " " " shape.

10. protection of liquid nitrogen according to claim 1 takes pipe device, which is characterized in that the benefit nitrogen pipe (42) is in " " " shape Shape.