Switch-controllable liquid nitrogen storage device convenient for forest tree sampling

Abstract

The utility model discloses a switch-controllable liquid nitrogen storage device facilitating forest tree sampling, and relates to the technical field of forest tree sampling and storage. Comprising a supporting base, a tank body, a quartered ball valve, a faucet, a handle and a tank cover, the tank body is installed on the upper surface of the supporting base, and the tank body and the supporting base are detachably connected; the quartered ball valve is installed at the two-thirds height position of the tank body from top to bottom, the other end of the quartered ball valve is communicated with the faucet, the quartered ball valve is arranged at the top of the tank body, the layered basket assemblies are arranged in the tank body, when liquid nitrogen is taken out, the liquid nitrogen can be quantitatively taken out, waste is reduced, the liquid nitrogen does not need to be taken out in a two-person carrying mode, more time and labor are saved in the operation process, and the operation efficiency is improved. One third of the liquid nitrogen content is still reserved when the liquid nitrogen is taken out of the whole tank body, so that the interior is always kept in a low-temperature environment and is always in a low-temperature storage environment, the sample storage quality is ensured, and waste of the liquid nitrogen and potential harm to workers are avoided.

Description

Technical Field

[0001] This utility model relates to the field of forest tree sampling and storage technology, specifically to a switchable liquid nitrogen storage device that facilitates forest tree sampling. Background Technology

[0002] Superior tree varieties are essential for strengthening ecological environment construction, increasing timber yield and quality, and are also an effective way to alleviate forest resource shortages. Modern forest tree breeding technology has greatly advanced the targeted breeding process of fast-growing, high-quality, and highly resistant new tree varieties. Molecular biology is a core technology for overcoming challenges in constructing high-quality breeding populations, selecting backbone parents, and efficient breeding. DNA and RNA identification of gene expression in superior tree varieties requires field sampling of plant samples. By sampling different individual trees, genetic information related to biological characteristics, including leaf, xylem, and phloem, is collected. Therefore, the rapid and effective preservation of multiple plant samples is crucial.

[0003] Due to the limitations of the field operation environment, the liquid nitrogen in the liquid nitrogen tank must be removed precisely. When it is necessary to pour the liquid nitrogen out of the tank, it usually requires two people to work together to lift the liquid nitrogen tank and tilt it slowly. Since the liquid nitrogen tank itself is quite heavy, it is quite difficult and time-consuming to tilt it to a certain angle after lifting it. Utility Model Content

[0004] The purpose of this invention is to provide a time-saving and labor-saving switchable liquid nitrogen storage device for convenient forest sampling, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a switchable liquid nitrogen storage device for easy forest sampling, comprising a support base, a tank, a 1 / 4-inch ball valve, a faucet, and a tank cover. The tank is installed on the upper surface of the support base, and the two are detachably connected. The 1 / 4-inch ball valve is installed at two-thirds of the height of the tank from top to bottom, and the other end of the 1 / 4-inch ball valve is connected to the faucet. The 1 / 4-inch ball valve is provided at the top of the tank, and several layered basket assemblies are provided inside the tank.

[0006] Preferably, the can lid has a through hole, and an end cap is provided at the top of the through hole.

[0007] Preferably, the bottom of the support base has a sinkhole, the top of the support base has a circular hole communicating with the sinkhole, the bottom of the tank is fixedly connected to a screw, the other end of the screw passes through the circular hole, and the other end is threadedly connected to a threaded fixing sleeve.

[0008] Preferably, the can lid is threaded to the top of the can body.

[0009] Preferably, the layered basket assembly includes a lifting backboard, a lifting rod, and a fixed connecting rod. The lifting rod and the fixed connecting rod are arranged vertically, and a plurality of lifting backboards are fixedly arranged between the lifting rod and the fixed connecting rod. A placement groove is opened on the top of the lifting backboard, and a sample storage box is placed inside the placement groove.

[0010] Preferably, an annular plate is fixedly fitted onto the tank body near the tank opening, and the top of the annular plate has several L-shaped hanging grooves arranged in annular pattern, and the top of the basket rod is in the shape of a U-shaped hook.

[0011] Preferably, handles are provided on both sides of the liquid nitrogen tank and on both sides of the faucet, so as to facilitate lifting and moving the liquid nitrogen tank.

[0012] Preferably, the tank has four L-shaped hanging slots inside, which are marked with four colors: red, yellow, blue, and green. Layered basket components are placed in the corresponding positions. Of course, the positions of the four-point ball valve and the faucet are left empty to avoid affecting their operation.

[0013] Preferably, the design of the support base can raise the overall height of the liquid nitrogen tank, providing sufficient space for the external liquid nitrogen container when connecting liquid nitrogen at the tap (i.e., increasing the height space under the tap for easy container placement). The detachable design allows the base to be removed simply by unscrewing the screws after sampling, and placed inside the vehicle without taking up transport space.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: when taking out liquid nitrogen, liquid nitrogen can be quantitatively taken out, reducing waste, and no two people are needed to carry out the liquid nitrogen, making the operation more time-saving and labor-saving. When the liquid nitrogen is taken out of the entire tank, one-third of the liquid nitrogen content is still retained, ensuring that the internal environment is always kept at a low temperature, thus ensuring the quality of sample storage. The tank, through the design of the layered basket assembly, allows different types of forest samples to be stored separately, avoiding sample confusion and improving the efficiency of sample management. At the same time, the basket assembly also facilitates the handling of samples, further simplifying the operation process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the present invention from the front view.

[0017] Figure 3 This is a three-dimensional structural diagram of the explosive decomposition of this utility model.

[0018] In the diagram: 1. Support base; 2. Tank body; 3. Quarter ball valve; 4. Faucet; 5. Tank lid; 6. Through hole; 7. Tank lid; 8. Layered basket assembly; 81. Lifting backboard; 82. Basket rod; 83. Placement slot; 84. Fixed connecting rod; 9. Sample storage box; 10. Annular plate; 11. Settling trough; 12. L-shaped hanging slot; 13. Threaded fixing sleeve; 14. Screw; 15. Round hole; 16. Handle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 , Figure 2 and Figure 3 The diagram shows a switchable liquid nitrogen storage device for easy forest sampling, including a support base 1, a tank 2, a quarter ball valve 3, a tap 4, and a tank cover 5. The tank 2 is installed on the upper surface of the support base 1, and the two are detachably connected. The quarter ball valve 3 is installed at two-thirds of the height of the tank 2 from top to bottom, and the other end of the quarter ball valve 3 is connected to the tap 4. The quarter ball valve 3 is provided at the top of the tank 2, and several layered basket assemblies 8 are provided inside the tank 2.

[0021] It is worth noting that in this design, when sampling, the quarter ball valve 3 is opened to allow liquid nitrogen to flow out, according to the needs of liquid nitrogen collection. The purpose of setting the quarter ball valve 3 at one-third of the height of the tank 2 is to prevent the liquid nitrogen from being completely depleted, resulting in too little liquid nitrogen in the tank 2 and failing to maintain the low temperature effect. If the liquid nitrogen in the tank 2 is completely drained from the tap 4, one-third of the liquid nitrogen is still retained inside to ensure the ultra-low temperature environment inside the liquid nitrogen tank.

[0022] Please see Figure 1 and Figure 3 The canister lid 5 has a through hole 6, and an end cap 7 is installed at the top of the through hole 6. The end cap 7 is removable. When liquid nitrogen needs to be discharged through the tap 4, the end cap 7 needs to be removed to ensure that the gas pressure is consistent with the outside. Normally, the end cap 7 is tightly closed to ensure that the liquid nitrogen in the inner liner of the canister 2 does not leak out and to maintain a constant low-temperature environment.

[0023] Please refer to Figure 2 and Figure 3The support base 1 has a sink 11 at the bottom and a round hole 15 communicating with the sink 11 at the top. The bottom of the tank body 2 is fixedly connected to a screw 14. The other end of the screw 14 passes through the round hole 15 and is threadedly connected to a threaded fixing sleeve 13. The screw 14 can be removed by rotating the threaded fixing sleeve 13 and then the support base 1 can be disassembled, thereby reducing the overall space occupied.

[0024] See Figure 3 The canister cover 5 is threaded to the top of the canister body 2, which facilitates the disassembly and installation of the canister cover 5. A sealing gasket is provided at the connection between the canister cover 5 and the canister body 2 to ensure that the liquid nitrogen in the canister body 2 will not leak from the connection, thus ensuring the sealing and heat preservation effect of the canister body 2.

[0025] See Figure 2 and Figure 3 The layered basket assembly 8 includes a lifting backboard 81, a lifting rod 82, and a fixed connecting rod 84. The lifting rod 82 and the fixed connecting rod 84 are vertically arranged, and a plurality of lifting backboards 81 are fixedly arranged between the lifting rod 82 and the fixed connecting rod 84. The top of the lifting backboard 81 is provided with a placement groove 83, and a sample storage box 9 is placed inside the placement groove 83.

[0026] It is worth noting that when samples need to be removed during research, the basket rod 82 in the L-shaped hanging groove 12 is lifted upward, causing the sample storage box 9 to move upward in the tank 2, thus transferring the sample to the sample removal port; then the fixed connecting rod 84 is pulled out, and with the sample storage box 9 in the placement groove 83 filled with liquid nitrogen, the sample is removed from the sample box. This ensures that the biological sample collection process is carried out entirely under liquid nitrogen, and the sample does not lose temperature.

[0027] See Figure 2 and Figure 3 The tank body 2 is fixedly fitted with an annular plate 10 near the tank opening. The top of the annular plate 10 has several annularly arranged L-shaped hanging slots 12. The top of the basket rod 82 is U-shaped with a hook. The U-shaped hook can be suspended and fixed in the L-shaped hanging slots 12, making its installation or disassembly simple and convenient.

[0028] Of course, in order to facilitate lifting and moving the liquid nitrogen tank, handles 16 are provided on both sides of the faucet 4. At the same time, in order to facilitate quick identification, the L-shaped hanging groove 12 is distinguished by painting four colors: red, yellow, blue and green (in this embodiment, color marking is used, but the L-shaped hanging groove 12 can also be marked with engraved numbers, which is also an equivalent technical means), which is a commonly used technical means in the field.

[0029] Working principle: During sampling, as needed for liquid nitrogen extraction, the quarter-ball valve 3 is opened, allowing liquid nitrogen to flow out through the tap 4. The quarter-ball valve 3 is positioned at one-third of the height of the tank 2 to prevent the liquid nitrogen from being completely drained, which would result in insufficient liquid nitrogen in the tank 2 to maintain the cryogenic effect. When the liquid nitrogen in the tank 2 is completely drained through the tap 4, one-third of the liquid nitrogen remains inside to ensure the ultra-low temperature environment within the liquid nitrogen tank. The tank cover 5 has a through hole 6, and a removable end cap 7 is installed at the top of the through hole 6. When it is necessary to drain liquid nitrogen through the tap 4, it is necessary to... Remove end cap 7 to ensure that the air pressure is consistent with the outside. Normally, end cap 7 is tightly closed to prevent liquid nitrogen from leaking out of the inner liner of tank 2 and to maintain a constant low-temperature environment. When it is necessary to remove the sample, lift the basket rod 82 in the L-shaped hanging groove 12 to move the sample storage box 9 upward in the tank 2 and transfer it to the sample removal operation port. Then pull out the fixed connecting rod 84. With the sample storage box 9 in the placement groove 83 filled with liquid nitrogen, the sample can be taken out from the sample storage box 9. This ensures that the biological sample collection process is carried out under liquid nitrogen throughout, avoiding sample temperature loss.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A switch-controlled liquid nitrogen storage device for facilitating sampling of trees, comprising a supporting base (1), a tank body (2), a four-way ball valve (3), a faucet (4) and a tank cover (5), characterized in that, The tank body (2) is installed on the upper surface of the support base (1), and the two are detachably connected; the quarter ball valve (3) is installed at two-thirds of the height of the tank body (2) from top to bottom, the other end of the quarter ball valve (3) is communicated with the faucet (4), the tank body (2) is provided with the quarter ball valve (3) at the top, and the tank body (2) is provided with a plurality of layered basket assemblies (8) inside.

2. The switch-controlled liquid nitrogen storage device for facilitating sampling of trees according to claim 1, wherein: The tank cover (5) is provided with a through hole (6), and the inner top of the through hole (6) is provided with an end cover (7).

3. The switch-controlled liquid nitrogen storage device for facilitating sampling of trees according to claim 1, wherein: The support base (1) is provided with a sunken groove (11) at the bottom, and a circular hole (15) communicated with the sunken groove (11) is formed at the top of the support base (1), the tank body (2) is fixedly connected with a screw rod (14) at the bottom, the other end of the screw rod (14) penetrates through the circular hole (15), and the other end is threadedly connected with a threaded fixing sleeve (13).

4. The switch-controlled liquid nitrogen storage device for facilitating sampling of trees according to claim 1, wherein: The tank cover (5) is threadedly connected with the top of the tank body (2).

5. The switch-controlled liquid nitrogen storage device for facilitating sampling of trees according to claim 1, wherein: The layered basket assembly (8) comprises a basket plate (81), a basket rod (82) and a fixed connecting rod (84), the basket rod (82) and the fixed connecting rod (84) are vertically arranged, a plurality of basket plates (81) are fixedly arranged between the basket rod (82) and the fixed connecting rod (84), a placing groove (83) is formed in the top of the basket plate (81), and a sample storage box (9) is placed in the placing groove (83).

6. The switch-controlled liquid nitrogen storage device for facilitating sampling of trees according to claim 5, wherein: The tank body (2) is provided with an annular plate (10) near the tank opening position, the top of the annular plate (10) is provided with a plurality of annular L-shaped hanging grooves (12), and the top end of the basket rod (82) is in U-shaped barb shape.

7. The switch-controlled liquid nitrogen storage device for facilitating sampling of trees according to claim 1, wherein: Handles (16) are arranged at both sides of the tank body (2) and both sides of the faucet (4).

8. The switchable liquid nitrogen storage device of claim 6, wherein: Four L-shaped hanging grooves (12) are arranged in the tank body, and are marked with red, yellow, blue and green to distinguish, and the layered basket assemblies (8) are arranged at the corresponding positions.

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