Liquid helium Dewar support structure

Abstract

The utility model relates to the technical field of helium production equipment, in particular to a liquid helium Dewar support structure. The supporting structure comprises a Dewar flask and a base, the bottom of the Dewar flask is connected with a horizontally-arranged supporting plate through a plurality of supporting columns, a mounting base is mounted on the base, and a Dewar flask containing groove used for containing the supporting plate is formed in the upper portion of the mounting base. A pressing block which moves in the radial direction of the installation base and can be located above the supporting plate is slidably connected to the side wall of the Dewar flask containing groove, the lower portion of the pressing block is connected with a shifting rod, a rotating ring is rotationally connected to the installation base, and a guide groove which is formed in the circumferential direction of the installation base and used for allowing the shifting rod to move is formed in the rotating ring. The distance between one end of the guide groove and the center of the swivel is larger than that between the other end of the guide groove and the center of the swivel. According to the technical scheme, the main structure is located below the Dewar flask, the structure is compact, the occupied area is small, meanwhile, only the rotating ring needs to be operated, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of helium production equipment, and in particular to a liquid helium dewar support structure. Background Art

[0002] Existing liquid helium dewar support structures, such as Chinese patent CN216113385U, disclose a liquid helium dewar support structure, including a stable horizontal plate located above the ground, a liquid helium dewar is provided on the upper surface of the stable horizontal plate, spiral positioning devices are fixedly installed at the four corners of the upper surface of the stable horizontal plate, a stable bracket is fixedly installed on the upper surface of the stable horizontal plate, a rotatable rotating rod is provided on the top of the stable bracket, and a worm gear is fixedly installed on the outer surface of the rotating rod. The liquid helium dewar support structure drives the stable circular plate and the fixed cone to move downward and insert into the ground to install and fix the stable horizontal plate by controlling the rotating handle and the rotating screw, which has a better fixing effect on the stable horizontal plate and the liquid helium dewar, effectively avoiding the situation where the liquid helium dewar is damaged due to external forces, which is conducive to better ensuring the stability of the liquid helium dewar during use and facilitating better use.

[0003] The above technical solution has the following disadvantages: 1. The main structure is located at the side of the Dewar flask, occupying a large area; 2. When in use, multiple parts need to be operated, which is inconvenient to use. Utility Model Content

[0004] The utility model aims to provide a liquid helium dewar support structure for the above problems. The main structure is located below the dewar flask, occupies a small area, and only needs to operate a swivel, which is easy to use.

[0005] To achieve the above-mentioned purpose, the utility model discloses a liquid helium dewar support structure, which includes a dewar flask and a base. The bottom of the dewar flask is connected to a horizontally arranged support plate through a plurality of support columns. A mounting seat is installed on the base. A dewar flask placement groove for placing the support plate is provided on the upper part of the mounting seat. A pressure block that moves radially along the mounting seat and can be located above the support plate is slidably connected to the side wall of the dewar flask placement groove. A lever is connected to the lower part of the pressure block. A swivel is rotatably connected to the mounting seat. A guide groove is provided on the swivel that is arranged along the circumference of the mounting seat and is used to accommodate the movement of the lever. The distance between one end of the guide groove and the center of the swivel is greater than the distance between the other end of the guide groove and the center of the swivel.

[0006] In the initial state, the end of the guide groove that is farther from the center of the swivel corresponds to the lever, and the pressure block is located at the outer end.

[0007] When placing a Dewar flask, first, place the Dewar flask on the mounting seat, at which point the support plate is located in the Dewar flask placement groove; then, rotate the swivel, the distance between the guide groove and the center of the swivel gradually decreases, pushing the lever to move inward, and the pressure block moves to the top of the support plate to fix the Dewar flask.

[0008] When disassembling the Dewar flask, first, rotate the swivel in the opposite direction, the distance between the guide groove and the center of the swivel gradually increases, the lever is pushed to move outward, and the pressing block is separated from the top of the support plate; then, the Dewar flask is taken out.

[0009] The main structure of the technical solution is located below the Dewar flask, which has a compact structure and occupies a small area. At the same time, only the rotating ring needs to be operated, which is convenient to use.

[0010] Preferably, the guide groove comprises an inner guide groove, an intermediate guide groove and an outer guide groove, the distance between the inner guide groove and the center of the rotating ring is equal everywhere, and the distance between the outer guide groove and the center of the rotating ring is equal everywhere.

[0011] When in use, when the outer guide groove corresponds to the lever, the pressure block is located at the outer end, and when the inner guide groove corresponds to the lever, the pressure block is located at the inner end; the outer guide groove and the inner guide groove have a certain length. When the rotation angle of the swivel is small, the position of the pressure block remains unchanged, preventing the pressure block from moving due to accidental touching of the swivel.

[0012] Preferably, a pressing block slide groove is provided on the side wall of the Dewar flask placement groove, the height of the outer end of the pressing block slide groove is greater than the height of the inner end thereof, and the pressing block moves along the pressing block slide groove.

[0013] When in use, the pressing block can move inward and downward, and the lower side of the end of the pressing block abuts against the support plate to improve the fixing effect.

[0014] Preferably, a pressure block avoidance groove for avoiding the pressure block is opened on the side of the mounting seat.

[0015] When in use, the pressing block moves in the pressing block avoidance groove to reduce collision.

[0016] Preferably, an annular groove is provided at the lower end of the side portion of the mounting seat, and the swivel is located in the annular groove.

[0017] When in use, the swivel moves in the annular groove to reduce bumps.

[0018] Preferably, a step hole is provided at the bottom of the Dewar flask placement groove, and the bolt passes through the step hole and is connected to the base.

[0019] This structure facilitates the installation of the mounting base.

[0020] Preferably, a buffer pad is placed between the base and the mounting seat.

[0021] This structure is helpful to reduce the impact of vibration on the Dewar flask.

[0022] Preferably, an operating rod is connected to the swivel.

[0023] This structure facilitates the operation of the swivel.

[0024] Preferably, running wheels are installed at the lower part of the base.

[0025] When in use, the Dewar flask can be moved by the traveling wheels.

[0026] In summary, the beneficial effects of the utility model are: the main structure of the technical solution is located below the Dewar flask, the structure is compact, and the occupied area is small. At the same time, only the rotating ring needs to be operated, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of a liquid helium Dewar support structure of the utility model;

[0028] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the local A pressing block in the extended state;

[0029] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle section BB;

[0030] Figure 4 yes Figure 2 Schematic diagram of the structure of the middle section CC;

[0031] Figure 5 yes Figure 1 A schematic diagram of the enlarged structure of the local A pressure block in the retracted state;

[0032] Figure 6 yes Figure 5 Schematic diagram of the structure of the middle section DD;

[0033] Figure 7 yes Figure 5 Schematic diagram of the structure of the middle section EE.

[0034] In the figure: 1. Dewar flask; 2. Support column; 3. Support plate; 4. Base; 5. Travel wheel; 6. Operating lever; 7. Buffer pad; 8. Mounting seat; 9. Dewar flask placement groove; 10. Pressure block avoidance groove; 11. Pressure block slide groove; 12. Pressure block; 13. Push rod; 14. Annular groove; 15. Step hole; 16. Bolt; 17. Bearing; 18. Swivel; 19. Inner guide groove; 20. Middle guide groove; 21. Outer guide groove. DETAILED DESCRIPTION

[0035] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0040] like Figures 1 to 7 As shown, a liquid helium dewar support structure comprises a dewar flask 1 and a base 4. The bottom of the dewar flask 1 is connected to a horizontally arranged support plate 3 through a plurality of support columns 2. A mounting seat 8 is installed on the base 4. A dewar flask placement groove 9 for placing the support plate 3 is provided on the upper part of the mounting seat 8. A pressing block 12 which moves radially along the mounting seat 8 and can be located above the support plate 3 is slidably connected on the side wall of the dewar flask placement groove 9. Specifically, the number of pressing blocks 12 is four. The lower part of the pressing block 12 is connected to a lever 13. A swivel 18 is rotatably connected to the mounting seat 8. Specifically, a bearing 17 is installed between the mounting seat 8 and the swivel 18. A guide groove is provided on the swivel 18 which is arranged along the circumference of the mounting seat 8 and is used to accommodate the movement of the lever 13. The distance between one end of the guide groove and the center of the swivel 18 is greater than the distance between the other end of the guide groove and the center of the swivel 18.

[0041] In the initial state, the end of the guide groove that is farther from the center of the rotating ring 18 corresponds to the shifting rod 13, and the pressing block 12 is located at the outer end.

[0042] When placing the Dewar flask 1, first, place the Dewar flask 1 on the mounting seat, at which time, the support plate 3 is located in the Dewar flask placement groove 9; then, rotate the swivel 18, the distance between the guide groove and the center of the swivel 18 gradually decreases, the lever 13 is pushed to move inward, and the pressing block 12 moves to the top of the support plate 3 to fix the Dewar flask 1.

[0043] When disassembling the Dewar flask 1, first, rotate the swivel 18 in the opposite direction, the distance between the guide groove and the center of the swivel 18 gradually increases, the lever 13 is pushed to move outward, and the pressing block 12 is separated from the support plate 3; then, the Dewar flask 1 is taken out.

[0044] The main structure of the technical solution is located below the Dewar flask 1, and has a compact structure and occupies a small area. At the same time, only the rotating ring 18 needs to be operated, and it is easy to use.

[0045] like Figure 4 , 7 As shown, the guide grooves include an inner guide groove 19, an intermediate guide groove 20 and an outer guide groove 21. The distance between the inner guide groove 19 and the center of the rotating ring 18 is equal everywhere, and the distance between the outer guide groove 21 and the center of the rotating ring 18 is equal everywhere.

[0046] When in use, when the outer guide groove 21 corresponds to the lever 13, the pressure block 12 is located at the outer end, and when the inner guide groove 19 corresponds to the lever 13, the pressure block 12 is located at the inner end; the outer guide groove 21 and the inner guide groove 19 have a certain length. When the rotation angle of the swivel 18 is small, the position of the pressure block 12 remains unchanged, preventing the pressure block 12 from moving due to accidental touching of the swivel 18.

[0047] like Figure 2 , 5 As shown, a pressing block slide 11 is provided on the side wall of the Dewar flask placement groove 9 , the height of the outer end of the pressing block slide 11 is greater than the height of the inner end thereof, and the pressing block 12 moves along the pressing block slide 11 .

[0048] When in use, the pressing block 12 can move inward and downward, and the lower side of the end of the pressing block 12 abuts against the support plate 3 to improve the fixing effect.

[0049] A pressure block avoidance groove 10 for avoiding the pressure block 12 is opened on the side of the mounting seat 8 .

[0050] When in use, the pressing block 12 moves in the pressing block avoiding groove 10 to reduce collision.

[0051] An annular groove 14 is formed at the lower end of the side of the mounting seat 8 , and the swivel 18 is located in the annular groove 14 .

[0052] When in use, the swivel 18 moves in the annular groove 14 to reduce collision.

[0053] A step hole 15 is provided at the bottom of the Dewar flask placement groove 9 , and a bolt 16 passes through the step hole 15 and is connected to the base 4 .

[0054] This structure facilitates the installation of the mounting seat 8.

[0055] A buffer pad 7 is placed between the base 4 and the mounting seat 8 .

[0056] This structure is beneficial to reducing the impact of vibration on the Dewar flask 1.

[0057] The operating rod 6 is connected to the swivel 18 .

[0058] This structure facilitates the operation of the swivel 18 .

[0059] Travel wheels 5 are installed at the lower part of the base 4.

[0060] When in use, the Dewar flask 1 can be moved by the running wheels 5 .

[0061] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A liquid helium dewar support structure, comprising a dewar flask (1) and a base (4), characterized in that: The bottom of a Dewar flask (1) is connected to a horizontally arranged support plate (3) via a plurality of support columns (2); a mounting seat (8) is mounted on a base (4); a Dewar flask placement groove (9) for placing the support plate (3) is provided on the upper portion of the mounting seat (8); a pressing block (12) is slidably connected to the side wall of the Dewar flask placement groove (9) and moves radially along the mounting seat (8) and can be located above the support plate (3); a lever (13) is connected to the lower portion of the pressing block (12); a swivel (18) is rotatably connected to the mounting seat (8); a guide groove is provided on the swivel (18) and is arranged along the circumference of the mounting seat (8) and is used to accommodate the movement of the lever (13); and a distance between one end of the guide groove and the center of the swivel (18) is greater than a distance between the other end of the guide groove and the center of the swivel (18).

2. The liquid helium Dewar support structure according to claim 1, characterized in that: The guide grooves include an inner guide groove (19), an intermediate guide groove (20) and an outer guide groove (21). The distance between the inner guide groove (19) and the center of the rotating ring (18) is equal everywhere, and the distance between the outer guide groove (21) and the center of the rotating ring (18) is equal everywhere.

3. The liquid helium Dewar support structure according to claim 1, characterized in that: A pressing block slide groove (11) is provided on the side wall of the Dewar flask placement groove (9), the height of the outer end of the pressing block slide groove (11) is greater than the height of the inner end thereof, and the pressing block (12) moves along the pressing block slide groove (11).

4. The liquid helium Dewar support structure according to claim 3, characterized in that: A pressure block avoidance groove (10) for avoiding the pressure block (12) is provided on the side of the mounting seat (8).

5. The liquid helium Dewar support structure according to any one of claims 1 to 4, characterized in that: An annular groove (14) is formed at the lower end of the side of the mounting seat (8), and the rotating ring (18) is located in the annular groove (14).

6. The liquid helium Dewar support structure according to any one of claims 1 to 4, characterized in that: A step hole (15) is provided at the bottom of the Dewar flask placement groove (9), and a bolt (16) passes through the step hole (15) and is connected to the base (4).

7. The liquid helium Dewar support structure according to claim 6, characterized in that: A buffer pad (7) is placed between the base (4) and the mounting seat (8).

8. The liquid helium Dewar support structure according to any one of claims 1 to 4, characterized in that: An operating rod (6) is connected to the rotating ring (18).

9. The liquid helium Dewar support structure according to any one of claims 1 to 4, characterized in that: Travel wheels (5) are installed at the lower part of the base (4).

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