Air separation cold box valve seat overhauling and disassembling device

Abstract

The utility model discloses an air separation cold box valve seat maintenance dismounting device which comprises a disc, a plurality of protruding blocks are arranged on the outer wall of the disc, a lantern ring is fixedly arranged at the top of the disc, a connector is arranged in the lantern ring, a connecting rod is fixedly arranged at the top of the connector, and two auxiliary rotating structures are arranged on the surface of the connecting rod. The auxiliary rotating structure comprises two supporting blocks, the two supporting blocks are fixedly installed on the outer surface of the connecting rod, a rotating shaft is arranged between the two supporting blocks, a holding rod is arranged at the bottom of the rotating shaft, and circular grooves are formed in the outer walls of the two supporting blocks. The air separation cold box valve seat can be conveniently overhauled and disassembled, operation can be carried out without the help of any tool in the disassembling process, the disassembling and overhauling efficiency of the valve seat is improved, and an operator can conveniently use the air separation cold box valve seat.

Description

Technical Field

[0001] The utility model relates to the technical field of air separation cold box valve seats, in particular to an air separation cold box valve seat inspection and disassembly device. Background Art

[0002] The air separation cold box is a key piece of equipment in an air separation unit. Cryogenic separation is essential for all processes involved in separating the raw material mixture into products, and the cold box is one of the primary devices involved in this process. Existing large air separation cold boxes have large liquid-air valves, with the valve seat installed approximately 1.5 meters inside the cold box. Due to the limited space within the cold box, disassembly and inspection often present significant inconvenience for maintenance personnel.

[0003] Patent No. CN217255826U in the prior art discloses a tool for removing the valve seat of an air separation cold box. This structure is driven by a long connecting rod, which greatly facilitates the removal of the valve seat of the air separation cold box by maintenance personnel. People can work outside the cold box. The structure is simple, safe and reliable, and can save a lot of time required for maintenance work. However, in actual use of the prior art, this structure requires the valve seat to be removed by rotating the connecting rod. When rotating the connecting rod, the operator needs to use a wrench to rotate the prism to rotate the connecting rod. Disassembly requires the use of tools. If the tool is forgotten, it will be difficult to remove the valve seat, which is inconvenient to operate. Therefore, further improvement is needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide an air separation cold box valve seat inspection and disassembly device.

[0005] The utility model is realized through the following technical solutions:

[0006] A device for inspecting and disassembling a valve seat of an air separation cold box comprises a disc, the outer wall of which is provided with a plurality of protrusions, the top of which is fixedly provided with a collar, the interior of which is provided with a connector, the top of which is fixedly provided with a connecting rod, the plurality of protrusions being distributed in a ring shape on the outer wall of the disc, and the protrusions being fixedly connected to the disc.

[0007] It can be seen that in the above structure, the protrusions on the disc correspond to the grooves on the valve seat, and the disc can be driven to rotate by rotating the connecting rod, thereby repairing and disassembling the air separation cold box valve seat.

[0008] In order to rotate the connecting rod without the aid of tools and facilitate the inspection and disassembly of the valve seat, preferably, two auxiliary rotation structures are provided on the surface of the connecting rod, and the auxiliary rotation structure includes two support blocks, both of which are fixedly mounted on the outer surface of the connecting rod, and a rotating shaft is provided between the two support blocks, a grip rod is provided at the bottom of the rotating shaft, and circular grooves are provided on the outer walls of the two support blocks, and rubber sleeves are fixedly provided at both ends of the rotating shaft, and the two ends of the rotating shaft are rotatably connected by rubber sleeves inside the circular grooves provided in the corresponding support blocks, an anti-slip sleeve is provided on the outside of the grip rod, and a plurality of anti-slip protrusions are distributed on the outside of the anti-slip sleeve.

[0009] In order to realize the disassembly and assembly of the collar and the connector, and to facilitate the replacement of different discs according to the size of the valve seat, preferably, the inner wall of the collar is provided with an internal thread, the outer wall of the connector is provided with an external thread, the collar is threadedly connected to the connector, and the connection between the collar and the connector is provided with a mounting hole, the internal thread of the mounting hole is installed with a screw, and the collar and the connector are connected by the screw.

[0010] The technical effects and advantages of this utility model are:

[0011] The utility model provides an auxiliary rotation structure to rotate the two grips from a vertical state to a horizontal state, so that the rubber sleeves at both ends of the rotating shaft rotate inside the circular grooves provided in the support block. When the two grips are rotated to a horizontal state, the operator holds the anti-slip sleeves on the grips and rotates the connecting rod, thereby facilitating the inspection and disassembly of the valve seat without the need for tools such as wrenches, thereby improving the efficiency of inspection and disassembly and facilitating the operator to disassemble the valve seat.

[0012] At the same time, by matching the protrusions on the disc with the grooves on the valve seat, the connecting rod drives the connector to rotate, the connector drives the collar to rotate, and finally the collar drives the disc to rotate, so that the multiple protrusions on the disc and the grooves on the valve seat drive the valve seat to rotate, thereby achieving the purpose of inspecting and disassembling the valve seat;

[0013] In addition, by threading the collar and the connector, it is convenient to disassemble and assemble the collar and the connector, and then different sized discs can be replaced and installed according to the size of the valve seat. After the collar on the disc is threadedly connected to the connector, the collar and the connector can be finally fixed by screws to achieve the purpose of replacing the disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the connection structure between the collar and the connector of the utility model.

[0016] Figure 3 It is a three-dimensional schematic diagram of the auxiliary rotation structure of the utility model.

[0017] Figure 4 This is a schematic diagram of the connection structure between the rubber sleeve and the support block of the utility model.

[0018] The accompanying drawings are marked as follows: 1. disc; 2. protrusion; 3. ring; 4. connector; 5. connecting rod; 6. support block; 7. rotating shaft; 8. grip rod; 9. circular groove; 10. rubber sleeve; 11. internal thread; 12. external thread; 13. mounting hole; 14. screw; 15. anti-slip sleeve; 16. anti-slip protrusion. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is further described in detail below with reference to the accompanying drawings and the best embodiment. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the utility model.

[0020] In the description of the utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model 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. Therefore, they cannot be understood as a limitation on the utility model.

[0021] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "installed," "disposed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0022] As attached Figure 1-4 The shown device is an air separation cold box valve seat inspection and disassembly device, comprising a disc 1, a plurality of protrusions 2 being provided on the outer wall of the disc 1, a collar 3 being fixedly provided on the top of the disc 1, a connector 4 being provided inside the collar 3, a connecting rod 5 being fixedly provided on the top of the connector 4, a plurality of protrusions 2 being distributed in a ring shape on the outer wall of the disc 1, and the protrusions 2 being fixedly connected to the disc 1.

[0023] Specifically, in this structure, the multiple bumps 2 on the disc 1 match the grooves on the air separation cold box valve seat. When the air separation cold box valve seat is inspected and disassembled, the bumps 2 on the disc 1 are aligned with the grooves on the valve seat. By rotating the connecting rod 5, the connecting rod 5 drives the connecting head 4 to rotate, and the connecting head 4 drives the ring 3 to rotate. Finally, the ring 3 drives the disc 1 to rotate, so that the multiple bumps 2 on the disc 1 and the grooves on the valve seat drive the valve seat to rotate, thereby achieving the purpose of inspecting and disassembling the valve seat.

[0024] In a specific embodiment, as shown in the attached Figure 1 、 2 As shown in Figures 3 and 4, the surface of the connecting rod 5 is provided with two auxiliary rotation structures, and the auxiliary rotation structures include two support blocks 6. The two support blocks 6 are fixedly mounted on the outer surface of the connecting rod 5, and a rotating shaft 7 is provided between the two support blocks 6. A grip 8 is provided at the bottom of the rotating shaft 7. Circular grooves 9 are provided on the outer walls of the two support blocks 6. Rubber sleeves 10 are fixedly provided at both ends of the rotating shaft 7. The two ends of the rotating shaft 7 are rotatably connected inside the circular grooves 9 opened in the corresponding support blocks 6 through the rubber sleeves 10. An anti-slip sleeve 15 is provided on the outside of the grip 8, and a plurality of anti-slip protrusions 16 are distributed on the outside of the anti-slip sleeve 15.

[0025] Specifically, this structure can rotate the connecting rod 5 without the aid of tools such as wrenches. Specifically, the operator rotates the two grips 8 from a vertical state to a horizontal state, so that the rubber sleeves 10 at both ends of the rotating shaft 7 rotate inside the circular groove 9 opened in the support block 6. When the grips 8 of the two auxiliary rotating structures are rotated to a horizontal state, the operator holds the anti-slip sleeves 15 on the grips 8 and rotates the connecting rod 5, thereby facilitating the inspection and disassembly of the valve seat. The anti-slip sleeves 15 can improve the comfort of the operator holding the grip 8, and the multiple anti-slip protrusions 16 can increase the friction of the operator's hand to avoid loosening when rotating the connecting rod 5; the rubber sleeves 10 at both ends of the rotating shaft 7 rotate inside the circular groove 9 opened in the support seat, and there is good tightness between the rubber sleeves 10 and the support seat, which can improve stability.

[0026] In a specific embodiment, as shown in the attached Figure 1 、 2 As shown, the inner wall of the collar 3 is provided with an internal thread 11, the outer wall of the connector 4 is provided with an external thread 12, the collar 3 is threadedly connected to the connector 4, and the connection between the collar 3 and the connector 4 is provided with a mounting hole 13, the internal thread of the mounting hole 13 is installed with a screw 14, and the collar 3 and the connector 4 are connected by the screw 14.

[0027] Specifically, in this structure, the collar 3 is threadedly connected to the connector 4, which facilitates disassembly and assembly between the collar 3 and the connector 4, and can replace and install discs 1 of different sizes according to the size of the valve seat. After the collar 3 on the disc 1 is threadedly connected to the connector 4, the collar 3 and the connector 4 can be finally fixed by the screw 14 to ensure that the connector 4 can drive the collar 3 to rotate, thereby causing the disc 1 to rotate.

[0028] Working principle of this utility model:

[0029] The present application provides an air separation cold box valve seat inspection and disassembly device. During the specific operation, first select a disc 1 of different sizes according to the size of the air separation cold box valve seat, thread the ring 3 on the disc 1 with the connector 4 on the connecting rod 5, and tighten it with screws 14 to achieve the installation of the disc 1.

[0030] When inspecting and disassembling, the protrusions 2 on the disc 1 correspond to the grooves on the valve seat, and the two grips 8 are rotated from a vertical state to a horizontal state, so that the rubber sleeves 10 at both ends of the rotating shaft 7 rotate inside the circular grooves 9 opened in the support block 6. When the two grips 8 are rotated to a horizontal state, the operator holds the anti-slip sleeves 15 on the grips 8 and rotates the connecting rod 5. The connecting rod 5 drives the connector 4 to rotate, and the connector 4 drives the collar 3 to rotate. Finally, the collar 3 drives the disc 1 to rotate, so that the multiple protrusions 2 on the disc 1 and the grooves on the valve seat drive the valve seat to rotate, thereby achieving the purpose of inspecting and disassembling the valve seat.

[0031] 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 modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An air separation cold box valve seat inspection and disassembly device, comprising a disc (1), characterized in that: The outer wall of the disk (1) is provided with a plurality of protrusions (2), a collar (3) is fixedly provided on the top of the disk (1), a connector (4) is provided inside the collar (3), a connecting rod (5) is fixedly provided on the top of the connecting rod (4), and two auxiliary rotation structures are provided on the surface of the connecting rod (5); The auxiliary rotation structure comprises two support blocks (6), both support blocks (6) are fixedly mounted on the outer surface of the connecting rod (5), and a rotating shaft (7) is provided between the two support blocks (6), a gripping rod (8) is provided at the bottom of the rotating shaft (7), and circular grooves (9) are provided on the outer walls of the two support blocks (6), and rubber sleeves (10) are fixedly provided at both ends of the rotating shaft (7), and the two ends of the rotating shaft (7) are rotatably connected inside the circular grooves (9) provided on the corresponding support blocks (6) through the rubber sleeves (10).

2. The air separation cold box valve seat inspection and disassembly device according to claim 1 is characterized in that: The inner wall of the collar (3) is provided with an internal thread (11), the outer wall of the connector (4) is provided with an external thread (12), and the collar (3) and the connector (4) are threadedly connected.

3. The air separation cold box valve seat inspection and disassembly device according to claim 2 is characterized in that: The connection points of the collar (3) and the connector (4) are both provided with mounting holes (13), the internal threads of the mounting holes (13) are provided with screws (14), and the collar (3) and the connector (4) are connected via the screws (14).

4. The air separation cold box valve seat inspection and disassembly device according to claim 3 is characterized in that: The outside of the grip (8) is provided with an anti-slip cover (15), and the outside of the anti-slip cover (15) is distributed with a plurality of anti-slip protrusions (16).

5. The air separation cold box valve seat inspection and disassembly device according to any one of claims 1 to 4, characterized in that: The plurality of protrusions (2) are distributed in an annular shape on the outer wall of the disc (1), and the protrusions (2) are fixedly connected to the disc (1).

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