Sealing structure of vaporized liquid argon pump

Abstract

The utility model discloses a sealing structure of a vaporized liquid argon pump. The sealing structure comprises the vaporized liquid argon pump, a connecting pipe A and a connecting pipe B, the connecting pipe A is connected to one side of the vaporized liquid argon pump, a sealing ring is arranged on the inner surface of the connecting pipe A, the connecting pipe B is connected to one side of the connecting pipe A, and a positioning block is arranged on the surface of the connecting pipe B; by screwing the first screw rod, the first screw rod can drive the sliding block and the inserting block to move, the sliding block and the inserting block can be inserted into the fixing hole in the positioning block, and then the connecting pipe B is fixed to one side of the connecting pipe A; by means of the arrangement of the sealing ring, connection between the connecting pipe A and the connecting pipe B can be tighter, sealing is formed, and the leakage condition is avoided; the movable block, the L-shaped plate and the sealing plate are moved to the initial position through the elastic force of the spring, one side of the sealing plate makes contact with the sealing groove in the surface of the limiting block, then sealing is formed, and continuous leakage of liquid argon is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vaporized liquid argon pumps, in particular to a sealing structure of a vaporized liquid argon pump. Background Art

[0002] Liquid argon pump is a special cryogenic liquid pump, which is often used in petroleum, air separation and chemical plants. It is a special pump for transporting cryogenic liquids. The purpose of liquid argon pump is to transport cryogenic liquids from low pressure places to high pressure places by converting argon gas into argon cryogenic liquid.

[0003] At present, some liquid argon pumps generally use instrument gas seals, but the gas seals may be worn, damaged, or fail to seal. During the process of seal failure, the sealed instrument gas will leak into the product and process medium through the sealing device, causing a large amount of product contamination and affecting product purity. At the same time, when some liquid argon pumps are connected to the gas supply pipe, tools are required for installation. However, while ensuring the sealing, the installation using tools is cumbersome and inconvenient. In view of this, we have introduced a sealing structure for a vaporized liquid argon pump. Utility Model Content

[0004] The purpose of the utility model is to provide a sealing structure of a vaporized liquid argon pump to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing structure of a vaporized liquid argon pump, comprising: a vaporized liquid argon pump, a connecting pipe A and a connecting pipe B;

[0006] The connecting pipe A is connected to one side of the vaporized liquid argon pump, and a sealing ring is provided on the inner surface of the connecting pipe A. The connecting pipe B is connected to one side of the connecting pipe A. The sealing ring can be used to form a seal at the connection between the connecting pipe B and the connecting pipe A to avoid leakage. A positioning block is provided on the surface of the connecting pipe B, and the positioning block and the connecting pipe B are welded. A fixing hole is provided inside the positioning block, and the fixing hole and the positioning block are integrally formed. A limiting block is provided on the inner surface of the connecting pipe B, and a sealing mechanism is provided inside the connecting pipe B. The spring of the sealing mechanism drives the moving block, the L-shaped plate and the sealing plate to move, so that the sealing plate contacts one side of the limiting block to form a seal.

[0007] Preferably, the sealing mechanism includes a positioning frame connected to the inner wall of the connecting tube B, the positioning frame and the connecting tube B are fixedly connected, the spring is connected to the inside of the positioning frame, the spring and the inside of the positioning frame are fixedly connected, the moving block is connected to one side of the spring, the moving block and the spring are fixedly connected, the L-shaped plate is connected to the bottom of the moving block, the L-shaped plate and the moving block are fixedly connected, the sealing plate is connected to one side of the L-shaped plate, and the sealing plate and the L-shaped plate are welded.

[0008] Preferably, a sealing groove for placing a sealing plate is provided on the surface of the limiting block, and the sealing groove and the limiting block are integrally formed.

[0009] Preferably, a fixing mechanism is provided on the surface of the connecting pipe A, and the sliding block and the plug-in block are driven to move by the first screw of the fixing mechanism so that the plug-in block is inserted into the interior of the fixing hole.

[0010] Preferably, the fixing mechanism includes a mounting frame, the first screw is connected to the inside of the mounting frame, and the first screw passes through the mounting frame, and a turntable is connected after the first screw passes through the mounting frame, the sliding block is screwed on the surface of the first screw, and the plug-in block is connected to one side of the sliding block, and the external thread on the surface of the first screw matches and is screwed with the internal thread inside the sliding block.

[0011] Preferably, the surface of the connecting tube A is connected to a vertical frame, and the vertical frame and the connecting tube A are fixedly connected. A second screw is provided inside the vertical frame, and the thread of the second screw is an external thread, and the second screw passes through the vertical frame. After the second screw passes through the vertical frame, it is connected to the first turntable, and a lifting block is connected to one side of the mounting frame, and the lifting block is screwed on the surface of the second screw, and the internal thread inside the lifting block matches and is screwed with the external thread on the surface of the second screw.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model twists the second screw rod to drive the lifting block, the installation frame and the plug-in block to move, so that the plug-in block moves to one side of the positioning block, and then twists the first screw rod, so that the first screw rod can drive the sliding block and the plug-in block to move, and then insert into the fixing hole inside the positioning block, thereby fixing the connecting pipe B on one side of the connecting pipe A, so that the connecting pipe A and the connecting pipe B are connected;

[0013] By using the sealing ring, the connection between the connecting pipe A and the connecting pipe B can be made tighter, forming a seal to avoid leakage.

[0014] After the vaporized liquid argon pump is stopped, the pressure of the liquid argon will decrease, and the spring will use its own elastic force to move the moving block, the L-shaped plate and the sealing plate to their initial positions, and one side of the sealing plate will contact the sealing groove on the surface of the limit block, thereby forming a seal to prevent the liquid argon from continuing to leak, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a schematic structural diagram of the side section of the installation frame and the vertical frame of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the side section of the connecting pipe B of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the sealing plate of the utility model when it moves.

[0019] In the figure: 1. vaporized liquid argon pump; 2. connecting pipe A; 3. mounting frame; 4. sealing ring; 5. second screw; 6. positioning block; 7. connecting pipe B; 8. fixing hole; 9. first screw; 10. lifting block; 11. vertical frame; 12. sliding block; 13. plug-in block; 14. positioning frame; 15. spring; 16. moving block; 17. L-shaped plate; 18. sealing plate; 19. limit block; 20. sealing groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a sealing structure of a vaporized liquid argon pump, comprising: a vaporized liquid argon pump 1, a connecting pipe A2 and a connecting pipe B7, wherein the connecting pipe A2 is connected to one side of the vaporized liquid argon pump 1, a sealing ring 4 is arranged on the inner surface of the connecting pipe A2, the connecting pipe B7 is connected to one side of the connecting pipe A2, a positioning block 6 is arranged on the surface of the connecting pipe B7, a fixing hole 8 is opened inside the positioning block 6, the fixing hole 8 and the positioning block 6 are integrally formed, a limiting block 19 is arranged on the inner surface of the connecting pipe B7, a sealing mechanism is arranged inside the connecting pipe B7, and a moving block 16, an L-shaped plate 17 and a sealing plate 18 are driven by a spring 15 of the sealing mechanism to move, so that the sealing plate 18 contacts one side of the limiting block 19 to form a seal.

[0022] The sealing mechanism includes a positioning frame 14 connected to the inner wall of the connecting tube B7, the spring 15 is connected to the inside of the positioning frame 14, the moving block 16 is connected to one side of the spring 15, the L-shaped plate 17 is connected to the bottom of the moving block 16, and the sealing plate 18 is connected to one side of the L-shaped plate 17.

[0023] A sealing groove 20 for placing the sealing plate 18 is formed on the surface of the limiting block 19 , and the sealing groove 20 and the limiting block 19 are integrally formed.

[0024] A fixing mechanism is provided on the surface of the connecting pipe A2 , and the first screw rod 9 of the fixing mechanism drives the sliding block 12 and the plug-in block 13 to move, so that the plug-in block 13 is inserted into the interior of the fixing hole 8 .

[0025] The fixing mechanism includes a mounting frame 3, the first screw rod 9 is connected to the inside of the mounting frame 3, and the first screw rod 9 passes through the mounting frame 3, and the first screw rod 9 is connected to a turntable after passing through the mounting frame 3, the sliding block 12 is screwed on the surface of the first screw rod 9, and the plug-in block 13 is connected to one side of the sliding block 12, and the external thread on the surface of the first screw rod 9 is matched and screwed with the internal thread inside the sliding block 12.

[0026] The surface of the connecting tube A2 is connected to a vertical frame 11, and the vertical frame 11 and the connecting tube A2 are fixedly connected. A second screw rod 5 is arranged inside the vertical frame 11, and the thread of the second screw rod 5 is an external thread, and the second screw rod 5 passes through the vertical frame 11. After the second screw rod 5 passes through the vertical frame 11, it is connected to the first turntable. A lifting block 10 is connected to one side of the installation frame 3, and the lifting block 10 is screwed on the surface of the second screw rod 5, and the internal thread inside the lifting block 10 is matched and screwed with the external thread on the surface of the second screw rod 5.

[0027] Specifically, when in use, the connecting tube B7 is brought close to one side of the connecting tube A2, and then the second screw rod 5 is screwed. Since the external thread on the surface of the second screw rod 5 matches and is screwed with the internal thread inside the lifting block 10, the second screw rod 5 drives the lifting block 10, the mounting frame 3 and the plug-in block 13 to move, and the plug-in block 13 is moved to one side of the positioning block 6. Then the first screw rod 9 is screwed. Since the external thread on the surface of the first screw rod 9 matches and is screwed with the internal thread inside the sliding block 12, the first screw rod 9 can drive the sliding block 12 and the plug-in block 13 to move. After the plug-in block 13 moves, it will be inserted into the fixing hole 8 inside the positioning block 6, and then the connecting tube B7 is fixed to one side of the connecting tube A2, so that the connecting tube A2 and the connecting tube B7 are connected. By setting the sealing ring 4, the connection between the connecting tube A2 and the connecting tube B7 can be made tighter, forming a seal to avoid leakage.

[0028] When the vaporized liquid argon pump 1 is in use, the vaporized liquid argon pump 1 transports the liquid argon to the inside of the connecting pipe B7 through the inside of the connecting pipe A2. When the liquid argon gas is large, the liquid argon pressure will push the sealing plate 18, the L-shaped plate 17 and the moving block 16 to move, so that the movement of the moving block 16 squeezes the spring 15, so that the L-shaped plate 17 drives the sealing plate 18 to move, so that one end of the sealing plate 18 is no longer in contact with the sealing groove 20, and the liquid argon will flow out from the gap between the sealing plate 18 and the limit block 19, so that the liquid argon can be transported for easy use. At the same time, after the vaporized liquid argon pump 1 is stopped, the pressure of the liquid argon will decrease. At this time, the spring 15 will use its own elastic force to move the moving block 16, the L-shaped plate 17 and the sealing plate 18 to the initial position, and one side of the sealing plate 18 will contact the sealing groove 20 on the surface of the limit block 19, so as to form a seal to prevent the liquid argon from continuing to leak, making it more convenient to use.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a vaporized liquid argon pump, comprising: A vaporized liquid argon pump (1), a connecting pipe A (2) and a connecting pipe B (7), characterized in that the connecting pipe A (2) is connected to one side of the vaporized liquid argon pump (1), a sealing ring (4) is provided on the inner surface of the connecting pipe A (2), the connecting pipe B (7) is connected to one side of the connecting pipe A (2), a positioning block (6) is provided on the surface of the connecting pipe B (7), a fixing hole (8) is provided inside the positioning block (6), a limiting block (19) is provided on the inner surface of the connecting pipe B (7), and a sealing mechanism is provided inside the connecting pipe B (7), and a spring (15) of the sealing mechanism drives a moving block (16), an L-shaped plate (17) and a sealing plate (18) to move, so that the sealing plate (18) contacts one side of the limiting block (19) to form a seal.

2. The sealing structure of a vaporized liquid argon pump according to claim 1, characterized in that: The sealing mechanism comprises a positioning frame (14) connected to the inner wall of the connecting tube B (7), the spring (15) connected to the inside of the positioning frame (14), the moving block (16) connected to one side of the spring (15), the L-shaped plate (17) connected to the bottom of the moving block (16), and the sealing plate (18) connected to one side of the L-shaped plate (17).

3. The sealing structure of a vaporized liquid argon pump according to claim 2, characterized in that: A sealing groove (20) for placing the sealing plate (18) is provided on the surface of the limiting block (19).

4. The sealing structure of a vaporized liquid argon pump according to claim 1, characterized in that: A fixing mechanism is provided on the surface of the connecting pipe A (2), and a first screw rod (9) of the fixing mechanism drives the sliding block (12) and the plug-in block (13) to move so that the plug-in block (13) is inserted into the interior of the fixing hole (8).

5. The sealing structure of a vaporized liquid argon pump according to claim 4, characterized in that: The fixing mechanism comprises a mounting frame (3), the first screw rod (9) is connected inside the mounting frame (3), and the first screw rod (9) passes through the mounting frame (3), the sliding block (12) is screwed on the surface of the first screw rod (9), and the plug-in block (13) is connected to one side of the sliding block (12).

6. The sealing structure of a vaporized liquid argon pump according to claim 5, characterized in that: The surface of the connecting pipe A (2) is connected to a vertical frame (11), a second screw rod (5) is arranged inside the vertical frame (11), and the second screw rod (5) passes through the vertical frame (11), and a lifting block (10) is connected to one side of the installation frame (3), and the lifting block (10) is screwed on the surface of the second screw rod (5).

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