Top cover sealing mechanism of low-temperature air separation device

Abstract

The utility model relates to the technical field of low-temperature air separation, in particular to a top cover sealing mechanism of a low-temperature air separation device, which comprises an air separation cold box device body and a top cover body, and the top cover body is arranged at the upper end of the air separation cold box device body. The positioning ring and the second sealing rubber are located in the sealing groove, the lower end surface of the second sealing rubber is tightly attached to the upper end surface of the first sealing rubber, then the sealing effect of the air separation cold box device body and the top cover body is enhanced, and the compression spring provides opposite acting force for the connecting block and the clamping block, so that the connecting block and the clamping block move towards the right end; and the first magnets and the clamping grooves magnetically attract each other, so that the clamping blocks are fixed in the clamping grooves again, the clamping blocks are fixed and locked, the overall fastening and sealing effects are enhanced, liquid gas leakage caused by separation of the top cover body is reduced, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of low-temperature air separation, in particular to a top cover sealing mechanism of a low-temperature air separation device. Background Art

[0002] An air separation unit is a set of industrial equipment used to separate the various groups of gases in the air and produce air components such as oxygen, nitrogen, argon, etc. The most commonly used air separation method is cryogenic distillation. Cryogenic distillation is the main air separation method. When separating the components in the air, the air is mainly cooled and then separated. After the separation is completed, an air separation cold box is required to collect it.

[0003] The opening and closing structure of the air separation cold box is simple, and the sealing of the top cover is not strong. The pressure bearing capacity inside the air separation cold box is limited when the liquid is continuously filled, which can easily cause the safety top cover to detach and leak liquid gas, posing a safety hazard. Therefore, in response to the above problems, we proposed a top cover sealing mechanism for the low-temperature air separation unit. Utility Model Content

[0004] The utility model aims to provide a top cover sealing mechanism for a low-temperature air separation device, so as to solve the problem that the opening and closing structure of the air separation cold box is simple, the sealing of the top cover is not strong, and the pressure bearing capacity inside the air separation cold box is limited when the liquid is continuously filled, which may easily lead to the detachment of the safety top cover and the leakage of liquid gas, posing a safety hazard.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A top cover sealing mechanism of a low-temperature air separation device comprises an air separation cold box device body and a top cover body, the upper end of the air separation cold box device body is provided with a top cover body, the lower end of the top cover body is fixedly connected to a rotating device, the inner side of the rotating device is fixedly connected to a rotating shaft, the outer side of the rotating shaft is rotatably connected to a fixing device, a handle is provided at the front end of the fixing device, a sealing groove is provided at the inner side of the upper end of the air separation cold box device body, a first sealing rubber is fixedly connected to the inner side of the sealing groove, a positioning ring is fixedly connected to the lower end of the top cover body, and a second sealing rubber is fixedly connected to the lower end of the positioning ring, a connecting rod is fixedly connected to the right end of the handle, a connecting rod is fixedly connected to a connecting block at the right end of the connecting rod, a compression spring is fixedly connected to the left end of the connecting block, a clamping block is fixedly connected to the right end of the connecting block, a first magnet is fixedly connected to the inner side of the right end of the clamping block, a clamping slot is provided at the left end of the air separation cold box device body, a second magnet is fixedly connected to the inner side of the clamping slot, and a placement slot is provided inside the fixing device.

[0007] Preferably, the air separation cold box device body is cylindrical in shape, the interior of the air separation cold box device body is hollow, the number of the rotating devices is two, and the number of the rotating shafts is two.

[0008] Preferably, the number of the fixing devices is two, the number of the handles is two, the positioning ring is located inside the sealing groove, and the second sealing rubber is located inside the sealing groove.

[0009] Preferably, the lower end surface of the second sealing rubber is tightly fitted with the upper end surface of the first sealing rubber, the right end of the connecting rod is located inside the placement groove, and the connecting block is located inside the placement groove.

[0010] Preferably, the left end of the compression spring is fixedly connected to a fixing device, the right end of the clamping block is located inside the clamping slot, and the first magnet and the second magnet are magnetically attracted to each other.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, a sealing groove, a first sealing rubber, a positioning ring, a second sealing rubber, a connecting block, a compression spring, a clamping block, a first magnet, a clamping groove and a second magnet are arranged. The positioning ring and the second sealing rubber are located inside the sealing groove. The lower end surface of the second sealing rubber and the upper end surface of the first sealing rubber are tightly fitted, thereby enhancing the sealing effect of the air separation cold box device body and the top cover body. The compression spring provides a reverse force to the connecting block and the clamping block, so that the connecting block and the clamping block move to the right end, and then the clamping block is clamped in the clamping groove. The first magnet and the clamping groove are magnetically attracted to each other, so that the clamping block is fixed in the clamping groove again, fixed and locked, thereby enhancing the overall fastening and sealing effect, reducing the top cover body from detaching and causing liquid gas leakage, and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at A;

[0015] Figure 3 For this utility model Figure 1 Schematic diagram of the structure at B;

[0016] Figure 4 It is a schematic diagram of the left-side cutaway structure of the rotating device of the utility model.

[0017] In the figure: 1. air separation cold box device body; 2. top cover body; 3. rotating device; 4. rotating shaft; 5. fixing device; 6. handle; 7. sealing groove; 8. first sealing rubber; 9. positioning ring; 10. second sealing rubber; 11. connecting rod; 12. connecting block; 13. compression spring; 14. clamping block; 15. first magnet; 16. clamping groove; 17. second magnet; 18. placement groove. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-4 , the utility model provides a technical solution:

[0020] A top cover sealing mechanism for a low-temperature air separation device comprises an air separation cold box device body 1 and a top cover body 2, wherein the top cover body 2 is provided at the upper end of the air separation cold box device body 1, a rotating device 3 is fixedly connected to the lower end of the top cover body 2, a rotating shaft 4 is fixedly connected to the inner side of the rotating device 3, a fixing device 5 is rotatably connected to the outer side of the rotating shaft 4, a handle 6 is provided at the front end of the fixing device 5, a sealing groove 7 is provided at the inner side of the upper end of the air separation cold box device body 1, a first sealing rubber 8 is fixedly connected to the inner side of the sealing groove 7, and a first sealing rubber 8 is fixedly connected to the lower end of the top cover body 2. There is a positioning ring 9, the lower end of the positioning ring 9 is fixedly connected to a second sealing rubber 10, the right end of the handle 6 is fixedly connected to a connecting rod 11, the right end of the connecting rod 11 is fixedly connected to a connecting block 12, the left end of the connecting block 12 is fixedly connected to a compression spring 13, the right end of the connecting block 12 is fixedly connected to a clamping block 14, the right end of the clamping block 14 is fixedly connected to a first magnet 15 on the inner side, a clamping groove 16 is provided on the left end of the air separation cold box device body 1, a second magnet 17 is fixedly connected to the inner side of the clamping groove 16, and a placement groove 18 is provided on the inner side of the fixing device 5.

[0021] The air separation cold box device body 1 is cylindrical in shape, and the interior of the air separation cold box device body 1 is hollow. There are two rotating devices 3, two rotating shafts 4, two fixing devices 5, two handles 6, a positioning ring 9 is located inside the sealing groove 7, a second sealing rubber 10 is located inside the sealing groove 7, a lower end surface of the second sealing rubber 10 is tightly fitted with an upper end surface of the first sealing rubber 8, a right end of a connecting rod 11 is located inside the placement groove 18, a connecting block 12 is located inside the placement groove 18, a left end of a compression spring 13 is fixedly connected to the fixing device 5, a right end of a clamping block 14 is located inside the clamping groove 16, a first magnet 15 The upper end of the air separation cold box device body 1 is provided with a top cover body 2, and the lower end of the top cover body 2 is fixedly connected with a rotating device 3, the inner side of the rotating device 3 is fixedly connected with a rotating shaft 4, and the outer side of the rotating shaft 4 is rotatably connected with a fixing device 5, and a handle 6 is provided at the front end of the fixing device 5. A sealing groove 7 is opened on the inner side of the upper end of the air separation cold box device body 1, which is convenient for arranging the sealing groove 7, the first sealing rubber 8, the positioning ring 9, the second sealing rubber 10, the connecting block 12, the compression spring 13, the clamping block 14, the first magnet 15, the clamping groove 16 and the second magnet 17, and the positioning ring 9 and the second sealing rubber 10 are located in the sealing Inside the groove 7, the lower end surface of the second sealing rubber 10 and the upper end surface of the first sealing rubber 8 are closely fitted, thereby enhancing the sealing effect of the air separation cold box device body 1 and the top cover body 2, and the compression spring 13 provides a reverse force to the connecting block 12 and the card block 14, so that the connecting block 12 and the card block 14 move to the right end, and then the card block 14 is stuck in the card groove 16, and the first magnet 15 and the card groove 16 are magnetically attracted to each other, so that the card block 14 is fixed in the card groove 16 again, fixed and locked, so that the overall fastening and sealing effect is enhanced, reducing the top cover body 2 from detaching and causing liquid gas leakage, and reducing safety Hidden dangers: A first sealing rubber 8 is fixedly connected to the inner side of the sealing groove 7, a positioning ring 9 is fixedly connected to the lower end of the top cover body 2, a second sealing rubber 10 is fixedly connected to the lower end of the positioning ring 9, a connecting rod 11 is fixedly connected to the right end of the handle 6, a connecting block 12 is fixedly connected to the right end of the connecting rod 11, a compression spring 13 is fixedly connected to the left end of the connecting block 12, a clamping block 14 is fixedly connected to the right end of the connecting block 12, a first magnet 15 is fixedly connected to the inner side of the right end of the clamping block 14, a clamping groove 16 is provided at the left end of the air separation cold box device body 1, a second magnet 17 is fixedly connected to the inner side of the clamping groove 16, and a placement groove 18 is provided on the inner side of the fixing device 5.

[0022] Working process: When the device is in use, a top cover body 2 is provided at the upper end of the air separation cold box device body 1, a positioning ring 9 is fixedly connected to the lower end of the top cover body 2, a second sealing rubber 10 is fixedly connected to the lower end of the positioning ring 9, a sealing groove 7 is provided on the inner side of the upper end of the air separation cold box device body 1, a first sealing rubber 8 is fixedly connected to the inner side of the sealing groove 7, the positioning ring 9 and the second sealing rubber 10 are located inside the sealing groove 7, the lower end surface of the second sealing rubber 10 and the upper end surface of the first sealing rubber 8 are closely fitted, thereby enhancing the sealing effect of the air separation cold box device body 1 and the top cover body 2. The lower end of the top cover body 2 is fixedly connected to a rotating device 3, the inner side of the rotating device 3 is fixedly connected to a rotating shaft 4, the outer side of the rotating shaft 4 is rotatably connected to a fixing device 5, the inner side of the fixing device 5 is provided with a placement groove 18, a connecting rod 11 is placed inside the placement groove 18, the right end of the connecting rod 11 is fixedly connected to a connecting block 12, the left end of the connecting block 12 is fixedly connected to a compression spring 13, the right end of the connecting block 12 is fixedly connected to a clamping block 14, the right end of the clamping block 14 is fixedly connected to a first magnet 15, the left end of the air separation cold box device body 1 is provided with a clamping groove 16, the inner side of the clamping groove 16 is fixed A second magnet 17 is connected, and at this time, the compression spring 13 provides a reverse force to the connecting block 12 and the clamping block 14, so that the connecting block 12 and the clamping block 14 move to the right end, and then the clamping block 14 is clamped in the clamping groove 16, and the first magnet 15 and the clamping groove 16 are magnetically attracted to each other, so that the clamping block 14 is fixed in the clamping groove 16 again, fixed and locked, so that the overall fastening and sealing effect is enhanced, the top cover body 2 is reduced from detaching to cause liquid gas leakage, and the safety hazard is reduced. When the air separation cold box device body 1 is used for a long time, the air separation cold box device body needs to be repaired. When the body 1 is inspected or repaired, the left end of the connecting rod 11 is fixedly connected to the handle 6, and the handle 6 is pulled outward, and the handle 6 drives the connecting rod 11, the connecting block 12 and the clamping block 14 to move outward, the first magnet 15 and the second magnet 17 are separated, and the clamping block 14 moves out of the clamping groove 16, and then the fixing device 5 is rotated to make the fixing device 5 in a horizontal state, and the top cover body 2 is lifted upward, so that the air separation cold box device body 1 and the top cover body 2 can be separated, and then the air separation cold box device body 1 can be internally inspected and repaired. This process is simple to operate and does not waste time and energy.

[0023] 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 top cover sealing mechanism for a cryogenic air separation device, comprising an air separation cold box device body (1) and a top cover body (2), characterized in that: The upper end of the air separation cold box device body (1) is provided with a top cover body (2), the lower end of the top cover body (2) is fixedly connected to a rotating device (3), the inner side of the rotating device (3) is fixedly connected to a rotating shaft (4), the outer side of the rotating shaft (4) is rotatably connected to a fixing device (5), the front end of the fixing device (5) is provided with a handle (6), the inner side of the upper end of the air separation cold box device body (1) is provided with a sealing groove (7), the inner side of the sealing groove (7) is fixedly connected to a first sealing rubber (8), the lower end of the top cover body (2) is fixedly connected to a positioning ring (9), the lower end of the positioning ring (9) is fixedly connected to A second sealing rubber (10) is provided, the right end of the handle (6) is fixedly connected to a connecting rod (11), the right end of the connecting rod (11) is fixedly connected to a connecting block (12), the left end of the connecting block (12) is fixedly connected to a compression spring (13), the right end of the connecting block (12) is fixedly connected to a clamping block (14), the right end of the clamping block (14) is fixedly connected to a first magnet (15), the left end of the air separation cold box device body (1) is provided with a clamping groove (16), the inside of the clamping groove (16) is fixedly connected to a second magnet (17), and the inside of the fixing device (5) is provided with a placement groove (18).

2. A top cover sealing mechanism for a cryogenic air separation unit according to claim 1, characterized in that: The air separation cold box device body (1) is cylindrical in shape, the interior of the air separation cold box device body (1) is hollow, the number of the rotating devices (3) is two, and the number of the rotating shafts (4) is two.

3. The top cover sealing mechanism of a cryogenic air separation device according to claim 1, characterized in that: The number of the fixing devices (5) is two, the number of the handles (6) is two, the positioning ring (9) is located inside the sealing groove (7), and the second sealing rubber (10) is located inside the sealing groove (7).

4. The top cover sealing mechanism of a cryogenic air separation unit according to claim 1, characterized in that: The lower end surface of the second sealing rubber (10) is tightly fitted to the upper end surface of the first sealing rubber (8), the right end of the connecting rod (11) is located inside the placement groove (18), and the connecting block (12) is located inside the placement groove (18).

5. The top cover sealing mechanism of a cryogenic air separation device according to claim 1, characterized in that: The left end of the compression spring (13) is fixedly connected to a fixing device (5), the right end of the clamping block (14) is located inside the clamping slot (16), and the first magnet (15) and the second magnet (17) are magnetically attracted to each other.

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