Liquid nitrogen tank temperature sleeve taking-out tool

Abstract

The utility model relates to a liquid nitrogen tank temperature sleeve taking-out tool which comprises a pinch bar 10 and a pinch bar seat 20, the pinch bar seat is provided with a pinch bar rotating shaft 21, the pinch bar rotating shaft is provided with a pinch bar inserting hole 22, the pinch bar is provided with a pinch bar head 11, the pinch bar head is provided with a fork rod 12 and a shifting groove 13, the fork rod penetrates into the pinch bar inserting hole, and the shifting groove shifts a temperature sleeve 30. The device has the advantages that the pry bar and the pry bar seat are adopted, the frozen liquid nitrogen tank temperature sleeve is pried through the lever effect, the shifting groove of the pry bar head is matched with the temperature sleeve in structure, the temperature sleeve is safely and conveniently taken out, the pry bar seat is of a wood structure, equipment can be prevented from being scratched, freezing is avoided, noise is avoided, and the device is safe to use and convenient to use. The whole tool is simple in structure and easy to popularize and use.

Description

Technical Field

[0001] The utility model relates to a low-temperature tank maintenance tool, in particular to a liquid nitrogen tank temperature sleeve removal tool. Background Art

[0002] Umbilical cord blood is the blood in the fetal umbilical cord and the placenta near the fetal side of the blood vessels. Umbilical cord tissue has been paid attention to by the world medical community due to the immunomodulatory effect of umbilical cord mesenchymal stem cells in assisting umbilical cord blood transplantation and after transplantation, and has been continuously valued by people. Deep-cold specimens of umbilical cord blood and umbilical cord tissue are stored in liquid nitrogen gas phase, and liquid nitrogen tanks are key equipment for deep-cryopreservation of biological specimens. There are three temperature detection points on the MVE liquid nitrogen tank currently in use: bottom temperature, top temperature, and sample temperature. The three thermometers are placed in the liquid nitrogen tank together through the sleeve. The detection hole is usually sealed and opened when in use. Due to the huge difference between liquid nitrogen temperature and ambient temperature, when the liquid nitrogen tank is filled with liquid and the ambient humidity is high, frozen water will form at the liquid nitrogen tank port, the temperature sleeve seal, and the liquid nitrogen pipeline. The liquid nitrogen tank thermometer calibration needs to be performed every year. Every year, the temperature sleeve needs to be removed from the normally used liquid nitrogen tank, balanced to room temperature, and the temperature probe needs to be wiped dry and placed in liquid nitrogen or ice water mixture for calibration. However, when removing the temperature sleeve, it is often impossible to directly remove the temperature sleeve due to ice formation, and improper operation may even cause the sleeve to break. Summary of the invention

[0003] The utility model aims to provide a liquid nitrogen tank temperature sleeve removal tool, which can conveniently and safely remove the temperature sleeve of the liquid nitrogen tank.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a liquid nitrogen tank temperature sleeve removal tool, comprising a pry bar 10 and a pry bar seat 20, the pry bar seat is provided with a pry bar shaft 21, the pry bar shaft is provided with a pry bar socket 22, the pry bar is provided with a pry bar head 11, the pry bar head is provided with a fork rod 12 and a pull groove 13, the fork rod is inserted into the pry bar socket, and the pull groove pulls the temperature sleeve 30.

[0005] Furthermore, in order to enable the pull groove to push the temperature sleeve, the temperature sleeve is provided with a sleeve body 31, the end of the sleeve body is provided with a sleeve head 32, the liquid nitrogen tank 40 is provided with a thermometer socket 41, the sleeve body 31 is inserted into the liquid nitrogen tank from the thermometer socket 41, the pull groove 13 is an open groove, the thermometer socket 41 is embedded in the pull groove 13 from the opening of the pull groove, and the pull groove pushes the sleeve head 32 upward.

[0006] Furthermore, in order to strengthen the structure of the pull groove, a pull groove wing plate 14 is provided around the pull groove 13 , and the sleeve head 32 is embedded in the pull groove wing plate 14 .

[0007] Furthermore, a structure of a pry bar head is that the pry bar head 11 is a right-angle structure provided with a bottom plate 11b and a vertical plate 11a, the fork rod 12 and the shift groove 13 are arranged on the bottom plate 11b, the bottom plate is provided with a wing plate 14 surrounding the shift groove, the fork rod is welded to the bottom plate and the wing plate, and the vertical plate 11a is welded to the pry bar handle 15.

[0008] Furthermore, a structure of a pry bar seat is that the pry bar seat is a U-shaped structure, and the pry bar seat includes a base plate 2a, and support blocks 2b are provided on both sides of the base plate. The support blocks 2b are provided with a shaft hole 23, and the pry bar shaft 21 is installed in the shaft hole 23 in a rotatable manner.

[0009] Furthermore, a mounting structure of a crowbar shaft is that retaining rings 24 are provided at both ends of the crowbar shaft, pin holes 25 are provided at both ends of the crowbar shaft, and pins 26 are provided in the pin holes to prevent the retaining rings from falling out.

[0010] Furthermore, a preferred structure of the pry bar shaft is that the pry bar shaft 21 is a hollow shaft.

[0011] Furthermore, a preferred pry bar seat structure is that the pry bar seat 20 is a wooden pry bar seat.

[0012] Furthermore, in order to be suitable for prying the temperature sleeve at different heights, the distances between the pry bar shaft 21 and the four sides of the pry bar seat are different.

[0013] The utility model has the following beneficial effects: a pry bar and a pry bar seat are used to pry the frozen temperature sleeve of the liquid nitrogen tank through the lever action; the prying groove of the pry bar head is matched with the structure of the temperature sleeve, so that the temperature sleeve can be safely and conveniently taken out; the pry bar seat adopts a wooden structure, which can avoid scratching the equipment, freezing and noise generation, and is safe to use; the whole set of tools has a simple structure and is easy to promote and use.

[0014] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is the structural exploded diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the temperature sleeve on the liquid nitrogen tank;

[0018] Figure 4 It is a schematic diagram of the structure of the temperature sleeve being taken out from the liquid nitrogen tank;

[0019] Figure 5This is a schematic diagram of the use of the utility model on a liquid nitrogen tank;

[0020] Figure 6 It is a schematic diagram of the operation of taking out a frozen temperature sleeve according to the utility model;

[0021] Figure 7 This is a schematic diagram of the operation of taking out the temperature sleeve of the utility model;

[0022] Figure 8 It is a position diagram of the pry bar shaft (shaft hole 2) of the utility model on the pry bar seat. DETAILED DESCRIPTION

[0023] Example:

[0024] like Figures 1 to 8 A liquid nitrogen tank temperature sleeve removal tool comprises a pry bar 10 and a pry bar seat 20.

[0025] The liquid nitrogen tank temperature sleeve removal tool of this embodiment is used to pull out the temperature sleeve 30 on the liquid nitrogen tank 40. The temperature sleeve is provided with a sleeve body 31, and the end of the sleeve body is provided with a sleeve head 32, and the diameter of the sleeve head 32 is larger than the diameter of the sleeve body 31. The liquid nitrogen tank 40 is provided with a thermometer socket 41, and the thermometer socket 41 extends upward from the top surface of the liquid nitrogen tank.

[0026] The pry bar seat 20 is a U-shaped structure, and the pry bar seat includes a base plate 2a, and a support block 2b is provided on each side of the base plate 2a. The support block 2b is provided with a shaft hole 23, and the shaft hole 23 penetrates the two support blocks 2b. A pry bar shaft 21 is installed in the shaft hole 23, and the pry bar shaft 21 rotates with the shaft hole 23. The pry bar shaft 21 is a hollow shaft, and two pry bar plug holes 22 are provided on the pry bar shaft, and the pry bar plug holes 22 vertically penetrate the pry bar shaft 21. The two ends of the pry bar shaft 21 extend out of the support block 2b, and the pry bar shaft is provided with a pin hole 25 at the extended end. A retaining ring 24 is provided at each end of the pry bar shaft, and a pin 26 is provided in the pin hole 25 to prevent the retaining ring from coming out. The pry bar seat 20 is made of wood, including a wooden board as the base plate 2a and two wooden blocks as the support blocks 2b, and the base plate 2a and the two support blocks 2b are connected by wood screws. Practical application has proved that the wooden structure of the pry bar seat has the advantages of avoiding scratching equipment, freezing and noise.

[0027] The pry bar is provided with a pry bar head 11, which is a right-angle structure provided with a bottom plate 11b and a vertical plate 11a. A pull groove 13 is provided in the middle of the bottom plate 11b, and the pull groove 13 is an open U-shaped groove. A wing plate 14 surrounding the pull groove 13 is provided on the bottom plate. The width K1 of the pull groove 13 is greater than the diameter d1 of the liquid nitrogen tank thermometer socket 41 and less than the diameter d2 of the sleeve head 32 of the temperature sleeve. The width K2 of the opening side of the wing plate 14 is slightly greater than the diameter d2 of the sleeve head 32 of the temperature sleeve, and the sleeve head 32 can be embedded in the pull groove wing plate 14. The pull groove 12 is inserted below the sleeve head 32, and the thermometer socket 41 is embedded in the pull groove 13 from the opening of the pull groove, and the pull groove 13 can push the sleeve head 32 upward. The wing plate 14 can enhance the rigidity and strength of the pull groove 12. Two fork rods 12 are provided on the bottom plate of the pry bar head. The diameter and position of the two fork rods 12 correspond to the two pry bar insertion holes 22 on the pry bar shaft. The fork rods 12 are arranged on both sides of the wing plate 14 and welded to the bottom plate 11 b and the wing plate 14 .

[0028] The vertical plate 11 a is connected to a pry bar handle 15 , which is welded to the vertical plate 11 a and parallel to the fork rod 12 .

[0029] When taking out the temperature sleeve 30 frozen on the thermometer socket 41, the pull groove 13 is forked on both sides of the thermometer socket 41, and the two fork rods 12 are inserted into the two pry bar holes 22 on the pry bar shaft, so that the pry bar seat 20 is stably placed on the top of the liquid nitrogen tank, as shown in FIG. Figure 5 By moving the lever handle 15 upward, the temperature sleeve 30 can be freed from freezing with the thermometer socket 41 and moved a distance, as shown in FIG. Figure 6 Afterwards, the temperature sleeve can be easily removed from the liquid nitrogen tank, as shown in Figure 7 shown.

[0030] In order to facilitate the push of the temperature sleeve 30 at different heights, the distances between the four sides of the pry bar shaft 21 and the pry bar seat are different, that is, the distances between the shaft hole 23 and the four sides of the pry bar seat are different. Figure 8 As shown. In this embodiment, the distance S1 from the center of the shaft hole 23 to the open end of the pry bar seat is the smallest, the distances from the center of the shaft hole 23 to the two sides of the pry bar seat are S2 and S3, where S3 is greater than S2, and the distance S4 from the center of the shaft hole 23 to the edge of the pry bar seat base plate 2a is the largest. In this way, the pry bar shaft 21 can have four different heights, and the most suitable height can be selected to operate and remove the temperature sleeve.

Claims

1. A liquid nitrogen tank temperature sleeve removal tool, characterized in that: The invention comprises a pry bar (10) and a pry bar seat (20), wherein the pry bar seat is provided with a pry bar rotating shaft (21), the pry bar rotating shaft is provided with a pry bar insertion hole (22), the pry bar is provided with a pry bar head (11), the pry bar head is provided with a fork rod (12) and a shifting groove (13), the fork rod is inserted into the pry bar insertion hole, and the shifting groove shifts a temperature sleeve (30).

2. The liquid nitrogen tank temperature sleeve removal tool according to claim 1, characterized in that: The temperature sleeve is provided with a sleeve body (31), an end of the sleeve body is provided with a sleeve head (32), the liquid nitrogen tank (40) is provided with a thermometer socket (41), the sleeve body (31) is inserted into the liquid nitrogen tank from the thermometer socket (41), the push groove (13) is an open groove, the thermometer socket (41) is embedded in the push groove (13) from the opening of the push groove, and the push groove pushes the sleeve head (32) upwards.

3. The liquid nitrogen tank temperature sleeve removal tool according to claim 2, characterized in that: A groove wing plate (14) is provided around the groove (13), and the sleeve head (32) is embedded in the groove wing plate (14).

4. The liquid nitrogen tank temperature sleeve removal tool according to claim 1, characterized in that: The pry bar head (11) is a right-angle structure provided with a bottom plate (11b) and a vertical plate (11a); the fork rod (12) and the shifting groove (13) are arranged on the bottom plate (11b); the bottom plate is provided with a wing plate (14) surrounding the shifting groove; the fork rod is welded to the bottom plate and the wing plate; and the vertical plate (11a) is welded to the pry bar handle (15).

5. The liquid nitrogen tank temperature sleeve removal tool according to claim 1, characterized in that: The pry bar seat is a U-shaped structure, comprising a base plate (2a), support blocks (2b) being provided on both sides of the base plate, the support blocks (2b) being provided with a rotation axis hole (23), and the pry bar rotation axis (21) being rotatably mounted in the rotation axis hole (23).

6. The liquid nitrogen tank temperature sleeve removal tool according to claim 5, characterized in that: Retaining rings (24) are provided at both ends of the pry bar rotating shaft, and pin holes (25) are provided at both ends of the pry bar rotating shaft. A column pin (26) is provided in the pin hole to prevent the retaining ring from falling out.

7. The liquid nitrogen tank temperature sleeve removal tool according to claim 1, characterized in that: The pry bar rotating shaft (21) is a hollow shaft.

8. The liquid nitrogen tank temperature sleeve removal tool according to claim 1, characterized in that: The pry bar seat (20) is a wooden pry bar seat.

9. The liquid nitrogen tank temperature sleeve removal tool according to claim 1, characterized in that: The distances between the pry bar rotating shaft (21) and the four sides of the pry bar seat are different.

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