Liquid nitrogen tank

Abstract

The utility model discloses a liquid nitrogen tank which comprises a tank body and an intelligent display screen arranged on the upper portion of the rear end of the tank body, and further comprises a cover plate unit which comprises a cover plate piece located on one side of the intelligent display screen after being opened; and the positioning unit comprises a second limiting block arranged at the upper end of the tank body and used for limiting one side of the cover plate piece, and a telescopic assembly arranged at the upper end of the tank body and used for being matched with the second limiting block to position the cover plate piece. The extending shaft drives the first limiting block to rotate in the second containing groove, so that the cover plate part is rotated to be staggered with the neck plug, and the mode that the cover plate part is rotationally opened along the plane where the upper end of the tank body is located is adopted for replacing the mode that the cover plate part is opened in an overturning mode in the prior art; the defect that after the cover plate is opened, the intelligent display screen is shielded by the cover plate, and an operator cannot read the intelligent display screen conveniently can be effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid nitrogen tanks, in particular to a liquid nitrogen tank. Background Art

[0002] Liquid nitrogen tanks usually include liquid nitrogen storage tanks, which need to have conditions to keep the liquid nitrogen in the tank liquid. The common way to seal the opening of the liquid nitrogen tank is to use a neck plug to block the opening of the inner tank of the liquid nitrogen tank;

[0003] However, the conventional method for opening the cover of the liquid nitrogen tank is to flip the cover directly toward the rear end of the liquid nitrogen tank. Since the smart screen of the liquid nitrogen tank is usually installed at the upper rear end of the tank body according to usage habits, the conventional flip switch method will hinder the operator from reading the information displayed on the smart display screen due to the obstruction of the cover after the cover is opened, which brings inconvenience to the operator. Therefore, it is necessary to improve the above defects.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not mean that the above content is the closest prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a liquid nitrogen tank to solve the problem that in the prior art proposed in the above background art, in which the operator is prevented from reading the information displayed on the smart display screen due to the obstruction of the cover after the cover is opened by directly flipping the switch toward the rear end of the liquid nitrogen tank, causing inconvenience to the operator.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A liquid nitrogen tank includes a tank body, an intelligent display screen provided at the upper rear end of the tank body, and further comprising:

[0008] A cover unit, comprising a cover member located on one side of the smart display screen after being opened;

[0009] The positioning unit includes a second limiting block provided at the upper end of the tank body for limiting one side of the cover plate, and a telescopic component provided at the upper end of the tank body for cooperating with the second limiting block to position the cover plate.

[0010] Furthermore, the cover plate unit further includes:

[0011] An extension shaft, fixedly connected to the lower end of the cover plate and having one end extending to the open end of the tank body, the extension shaft being close to the edge of the cover plate;

[0012] The first limiting block is fixedly connected to the lower end of the extension shaft and is used to limit the extension shaft.

[0013] Furthermore, a second accommodating groove for accommodating the first limiting block is provided on the outer side of the first limiting block and at the open end of the tank body;

[0014] A third accommodating groove for accommodating the extension shaft is provided outside the extension shaft and above the second accommodating groove. The diameter of the third accommodating groove is smaller than the diameter of the second accommodating groove.

[0015] Furthermore, the telescopic assembly includes:

[0016] A telescopic shaft is inserted into the tank body for sliding up and down movement;

[0017] a third limit block fixedly connected to the lower end of the telescopic shaft, and a first accommodating groove for guiding the movement of the third limit block is provided outside the third limit block and inside the tank body;

[0018] The second tightening spring is arranged inside the first accommodating groove and located at the lower end of the third limiting block, and is used for tightening the telescopic shaft upward.

[0019] Furthermore, the cover plate is circular, and the telescopic shaft and the second limiting block are located outside the cover plate and close to the cover plate.

[0020] Furthermore, two groups of the second limiting blocks are provided, and the inner sides of the second limiting blocks are configured to be in an arc shape that matches the outer sides of the cover plate.

[0021] Furthermore, the smart display screen is arranged in the middle of the rear of the tank body.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The utility model pushes the telescopic shaft downward, and the telescopic shaft moves downward along the first accommodating groove through the third limit block and gradually compresses the second tightening spring until the upper end of the telescopic shaft is lower than the plane where the lower end of the cover plate is located, and then rotates the cover plate along the plane where the upper end of the tank body is located. The cover plate drives the first limit block to rotate inside the second accommodating groove through the extension shaft, so that the cover plate is rotated to be misaligned with the neck plug. This method of rotating the cover plate to open along the plane where the upper end of the tank body is located replaces the existing method of opening the cover plate by flipping. It can effectively avoid the defect that the smart display screen is blocked by the cover plate after the cover plate is opened, which makes it inconvenient for the operator to read the smart display screen.

[0024] 2. The utility model pushes the telescopic shaft downward so that the upper end of the telescopic shaft is lower than the plane where the lower end of the cover plate is located, and rotates the cover plate in the opposite direction so that the cover plate passes over the telescopic shaft and contacts the second limit block on the side. The entire opening and closing process of the cover plate is fast. The second limit block and the telescopic shaft limit the cover plate, ensuring that the cover plate can accurately cover the opening of the tank body and is not prone to angular deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a working diagram of the opening process of the cover member of the utility model;

[0027] Figure 3 This is a schematic diagram of the telescopic assembly structure of the utility model;

[0028] Figure 4 This is a schematic diagram of the cover unit structure of the utility model;

[0029] Figure 5 This is a schematic diagram of the opening process of the cover member of the second embodiment of the present utility model;

[0030] Figure 6 This is a schematic diagram of the opening process of the cover member of the third embodiment of the present invention.

[0031] Figure markings: 100, tank body; 1001, first accommodating groove; 1002, second accommodating groove; 1003, third accommodating groove; 101, smart display screen; 102, neck plug; 1, cover unit; 11, cover member; 12, extension shaft; 13, first limit block; 2, positioning unit; 21, second limit block; 22, telescopic assembly; 221, telescopic shaft; 222, third limit block; 223, second tightening spring; 111, notch; 1011, protrusion; 1101, guide plate; 1102, guide groove; 1103, limit ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Example 1

[0034] See also Figure 1-4 , the utility model provides a technical solution:

[0035] A liquid nitrogen tank includes a tank body 100, an intelligent display screen 101 disposed at the upper rear end of the tank body 100, and further includes:

[0036] The cover unit 1 includes a cover member 11 located on one side of the smart display screen 101 when opened;

[0037] The positioning unit 2 includes a second limiting block 21 provided at the upper end of the tank body 100 for limiting one side of the cover plate 11, and a telescopic component 22 provided at the upper end of the tank body 100 for cooperating with the second limiting block 21 to position the cover plate 11.

[0038] As an improvement, Figure 1 , Figure 4 As shown, the cover unit 1 also includes:

[0039] An extension shaft 12 is fixedly connected to the lower end of the cover member 11 and one end of the extension shaft 12 extends to the open end of the tank body 100, and the extension shaft 12 is close to the edge of the cover member 11;

[0040] The first limiting block 13 is fixedly connected to the lower end of the extension shaft 12 and is used to limit the extension shaft 12 .

[0041] Furthermore, a second receiving groove 1002 for receiving the first limiting block 13 is provided on the outer side of the first limiting block 13 and at the open end of the tank body 100;

[0042] A third receiving groove 1003 for receiving the extension shaft 12 is provided outside the extension shaft 12 and above the second receiving groove 1002 . The diameter of the third receiving groove 1003 is smaller than the diameter of the second receiving groove 1002 .

[0043] As an improvement, Figure 2-3 As shown, the telescopic assembly 22 includes:

[0044] The telescopic shaft 221 is inserted into the tank body 100 by sliding up and down;

[0045] A third limit block 222 is fixedly connected to the lower end of the telescopic shaft 221. A first receiving groove 1001 is provided outside the third limit block 222 and inside the tank body 100 to guide the movement of the third limit block 222;

[0046] The second pressing spring 223 is disposed inside the first receiving groove 1001 and at the lower end of the third limiting block 222 , and is used to press the telescopic shaft 221 upward.

[0047] Furthermore, the cover member 11 is circular, and the telescopic shaft 221 and the second limiting block 21 are located outside the cover member 11 and close to the cover member 11 .

[0048] Furthermore, Figure 2 As shown, two groups of second limiting blocks 21 are provided, and the inner sides of the second limiting blocks 21 are configured to be in an arc shape that matches the outer sides of the cover plate 11 .

[0049] With this design, when the cover plate 11 covers the upper opening of the tank body 100, the cover plate 11 can fully cooperate with the arc surface inside the second limit block 21 through the outer arc surface, thereby increasing the contact area between the cover plate 11 and the second limit block 21, and avoiding the cover plate 11 from generating large stress when rotating to the inner side of the second limit block 21, causing damage to the area where the cover plate 11 contacts the second limit block 21.

[0050] The smart display screen 101 is located in the middle of the rear of the tank body 100 .

[0051] This design can prevent the smart display screen 101 from being blocked when the cover 11 is unscrewed from the upper opening of the can body 100 .

[0052] It should be supplemented that a neck plug 102 for sealing the liquid nitrogen in the inner liner of the tank body 100 is provided on the upper part of the tank body 100 and below the cover plate 11 .

[0053] It should be noted that: Figure 1-3 When the lid 11 is opened, the first stopper 222 is pushed downwardly, and the second stopper 223 is gradually compressed until the upper end of the stopper 221 is lower than the plane where the lower end of the lid 11 is located. The lid 11 is rotated along the plane where the upper end of the tank body 100 is located, and the lid 11 is driven by the first stopper 222 to rotate inside the second stopper 1002, so that the lid 11 is rotated to be misaligned with the neck plug 102. The method of rotating the lid 11 along the plane where the upper end of the tank body 100 is located replaces the conventional method of opening the lid 11 by flipping.

[0054] like Figure 2-4As shown, when the tank body 100 needs to be sealed, the telescopic shaft 221 is pushed downward again so that the upper end of the telescopic shaft 221 is lower than the plane where the lower end of the cover member 11 is located, and the cover member 11 is rotated in the opposite direction so that the cover member 11 passes over the telescopic shaft 221 and contacts the second limit block 21 at the side. The entire opening and closing process of the cover member 11 is quick. The second limit block 21 and the telescopic shaft 221 limit the cover member 11, ensuring that the cover member 11 can accurately cover the opening of the tank body 100 and is not prone to angular deviation.

[0055] Example 2

[0056] like Figure 5 As shown, the components identical or corresponding to those in the first embodiment are designated by the corresponding reference numerals in the first embodiment. For simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that:

[0057] A protrusion 1011 is fixedly connected to the upper end of the tank body 100 and located on one side of the smart display screen 101. The outer side of the cover member 11 is provided with a recess 111 that is compatible with the protrusion 1011. The cover member 11 and the protrusion 1011 are hinged by a hinge axis. When the cover member 11 needs to be opened, the cover member 11 will be pushed so that the cover member 11 rotates around the protrusion 1011 to open. After opening, the cover member 11 is located on one side of the smart display screen 101 and will not hinder the data reading of the smart display screen 101.

[0058] Example 3

[0059] like Figure 6 As shown, the components identical or corresponding to those in Example 1 and Example 2 are designated by the corresponding reference numerals in Example 1. For simplicity, only the differences from Example 1 are described below. The differences between Example 3 and Example 1 and Example 2 are as follows:

[0060] The upper end of the tank body 100 is fixedly connected to a guide plate 1101, and a guide groove 1102 is provided on the inner side of the guide plate 1101. The cover member 11 is slidably inserted into the guide groove 1102, and the outer side of the cover member 11 is fixedly sleeved with a limit ring 1103 adapted to the guide groove 1102. When the cover member 11 needs to be opened, the cover member 11 is pushed along the extension direction of the guide groove 1102, and the cover member 11 drives the limit ring 1103 to move along the guide groove 1102, so that the end of the guide plate 1101 corresponding to the top opening of the tank body 100 moves to the other end of the guide plate 1101. With this design, the cover member 11 will not hinder the data reading of the smart display screen 101 after it is opened.

[0061] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0062] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid nitrogen tank, comprising a tank body (100), and an intelligent display screen (101) provided at the upper rear end of the tank body (100), characterized in that: Also includes: A cover unit (1), comprising a cover member (11) located on one side of the smart display screen (101) after being opened; The positioning unit (2) comprises a second limiting block (21) provided at the upper end of the tank body (100) for limiting one side of the cover plate member (11), and a telescopic assembly (22) provided at the upper end of the tank body (100) for cooperating with the second limiting block (21) to position the cover plate member (11).

2. A liquid nitrogen tank according to claim 1, characterized in that: The cover plate unit (1) further comprises: an extension shaft (12) fixedly connected to the lower end of the cover plate (11) and having one end extending to the open end of the tank body (100), wherein the extension shaft (12) is close to the edge of the cover plate (11); The first limiting block (13) is fixedly connected to the lower end of the extension shaft (12) and is used to limit the extension shaft (12).

3. A liquid nitrogen tank according to claim 2, characterized in that: A second accommodating groove (1002) for accommodating the first limiting block (13) is provided on the outside of the first limiting block (13) and at the open end of the tank body (100); A third accommodating groove (1003) for accommodating the extension shaft (12) is provided outside the extension shaft (12) and above the second accommodating groove (1002), and the diameter of the third accommodating groove (1003) is smaller than the diameter of the second accommodating groove (1002).

4. A liquid nitrogen tank according to claim 1, characterized in that: The telescopic assembly (22) comprises: A telescopic shaft (221) is inserted into the tank body (100) in a manner that it slides up and down; A third limiting block (222) is fixedly connected to the lower end of the telescopic shaft (221); a first receiving groove (1001) for guiding the movement of the third limiting block (222) is provided outside the third limiting block (222) and inside the tank body (100); The second tightening spring (223) is arranged inside the first accommodating groove (1001) and located at the lower end of the third limiting block (222), and is used to tighten the telescopic shaft (221) upward.

5. A liquid nitrogen tank according to claim 4, characterized in that: The cover plate member (11) is circular, and the telescopic shaft (221) and the second limiting block (21) are located outside the cover plate member (11) and close to the cover plate member (11).

6. The liquid nitrogen tank according to claim 1, characterized in that: The second limiting blocks (21) are provided in two groups, and the inner sides of the second limiting blocks (21) are configured to be in an arc shape that matches the outer sides of the cover plate (11).

7. The liquid nitrogen tank according to claim 1, characterized in that: The smart display screen (101) is arranged in the middle of the rear of the tank body (100).

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