Cryogenic separation device

Abstract

The utility model discloses a cryogenic separation device which comprises a box body, the top of the box body is communicated with an exhaust pipe, one end of the exhaust pipe far away from the box body is provided with a filter pipe, the filter pipe is internally provided with a filter screen, the top of the filter screen is connected with a semi-annular plate, the semi-annular plate and the top of the filter pipe are installed in a penetrating and matched mode, and the semi-annular plate is provided with a sealing ring. Sealing washers are arranged on the front side and the rear side of the filter screen, the sealing washers are tightly attached to the inner wall of the filter pipe, supporting blocks are arranged on the outer walls of the two sides of the filter pipe, grooves are formed in the side walls of the supporting blocks, buckling blocks are hinged to the interiors of the grooves, and connecting springs are connected between the bottom walls of the buckling blocks and the supporting blocks. Buckling grooves are formed in the bottom ends of the two side walls of the semi-circular plate, and the buckling grooves are clamped and matched with the buckling blocks. The utility model belongs to the technical field of cryogenic separation devices, and particularly relates to a cryogenic separation device.

Description

Technical Field

[0001] The utility model belongs to the technical field of cryogenic separation devices, in particular to a cryogenic separation device. Background Art

[0002] Deep freezing method of air separation is to liquefy the air and then separate oxygen and nitrogen by using their different boiling points, that is, the difference in gas and liquid concentrations. When performing deep freezing air separation, a distillation tower is often used.

[0003] The Chinese utility model patent with application number 201921056151.3 discloses a cryogenic air separation anti-leakage circulating distillation tower, including a tower body, an evaporator is installed at the center of the inner ground of the tower body, a heating plate is fixed to the top of the tower body near the top of the evaporator, and multiple U-shaped long blocks are welded on the two side walls of the tower body at equal distances in the vertical direction, and long slides are slidably embedded in the inner walls of the multiple U-shaped long blocks, and the top and bottom of the long slides are provided with locking holes near the front and rear edges.

[0004] When the separated impurity gas is discharged, the filter plate and the inner wall of the pipe are connected by bolts, which results in poor sealing between the filter plate and the inner wall of the pipe, which may easily cause leakage of some harmful gases and poor safety performance. In addition, the internal filter plate may become clogged after long-term use and is not easy to replace and clean. Utility Model Content

[0005] In order to solve the above-mentioned problems that the sealing effect between the filter plate and the inner wall of the pipeline is poor, which easily causes leakage of some harmful gases, and the internal filter plate will be blocked after long-term use and is difficult to replace and clean, the utility model provides a deep cold separation device.

[0006] In order to achieve the above functions, the technical solution adopted by the utility model is as follows: a deep cold separation device comprises a box body, the top of the box body is connected to an exhaust pipe, a filter tube is installed at one end of the exhaust pipe away from the box body, a filter screen is installed in the filter tube, a semicircular ring plate is connected to the top of the filter screen, the semicircular ring plate is fitted and installed with the top of the filter tube, sealing gaskets are provided on the front and back sides of the filter screen, the sealing gasket is tightly fitted with the inner wall of the filter tube, support blocks are provided on the outer walls of both sides of the filter tube, grooves are provided at the side walls of the support block, a buckling block is hinged in the groove, a connecting spring is connected between the bottom wall of the buckling block and the support block, buckle grooves are provided at the bottom ends of the two side walls of the semicircular ring plate, and the buckle grooves are clamped and fitted with the buckling blocks.

[0007] As a preferred technical solution of the utility model, the filter screen includes a primary filter screen, a secondary filter screen and a tertiary filter screen which are arranged in sequence at the bottom of the semicircular ring plate.

[0008] As a preferred technical solution of the utility model, the connection between the filter tube and the exhaust pipe is installed and connected via a flange connection portion, and one end of the filter tube extends to the inside of the exhaust pipe and is contacted and connected via a sealing ring.

[0009] As a preferred technical solution of the utility model, one end of the filter tube away from the exhaust pipe is connected to the exhaust pipe through a thread.

[0010] As a preferred technical solution of the present utility model, the exhaust pipe is an L-shaped pipe.

[0011] As a preferred technical solution of the utility model, the buckling block is arranged in a C-shaped structure.

[0012] Compared with the prior art, the utility model adopts the above structure to achieve the following beneficial effects:

[0013] 1. The sealing gaskets set on the front and rear sides of the filter screen are tightly fitted with the inner wall of the filter tube to ensure the sealing between the filter screen and the inner wall of the filter tube, avoid leakage of some harmful gases, and ensure safety performance;

[0014] 2. By setting the filter that is easy to disassemble and assemble, the buckling block is rotated. The buckling block rotates with the hinge between it and the groove as the rotation center. The buckling block generates a moving torsional force on the connecting spring. After the filter under the semicircular ring plate is squeezed and installed in the filter tube, the buckling block is rotated back to its original position after receiving the reset torsional force of the connecting spring, and the buckling block is pressed on the bottom end of the buckle groove, which has a certain downward extrusion and limiting effect on the semicircular ring plate, ensuring that the filter under the semicircular ring plate is only buckled and installed in the filter tube. At the same time, it is also convenient to rotate the buckling block to pull the semicircular ring plate out from the top of the filter tube to clean and replace the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a cryogenic separation device proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of a cryogenic separation device proposed by the utility model;

[0017] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0018] Figure 4 The utility model is a schematic diagram of the structure of a filter screen of a cryogenic separation device.

[0019] Among them, 1. box body, 2. exhaust pipe, 3. filter tube, 4. filter screen, 5. semicircular ring plate, 6. sealing gasket, 7. support block, 8. groove, 9. buckle block, 10. connecting spring, 11. buckle groove, 12. flange connection part, 13. exhaust pipe. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. The present utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1-4As shown, a cryogenic separation device provided by the utility model comprises a box body 1, the top of the box body 1 is connected with an exhaust pipe 2, the exhaust pipe 2 is an L-shaped pipe, a filter tube 3 is installed at one end of the exhaust pipe 2 away from the box body 1, a filter screen 4 is installed in the filter tube 3, a semicircular ring plate 5 is connected to the top of the filter screen 4, the semicircular ring plate 5 is fitted and installed with the top of the filter tube 3, sealing gaskets 6 are arranged on the front and back sides of the filter screen 4, the sealing gasket 6 is tightly fitted with the inner wall of the filter tube 3 to ensure the sealing between the filter screen 4 and the inner wall of the filter tube 3, support blocks 7 are arranged on the outer walls of both sides of the filter tube 3, grooves 8 are opened on the side walls of the support blocks 7, a buckling block 9 is hinged in the groove 8, the buckling block 9 is arranged in a C-shaped structure, and the bottom wall of the buckling block 9 is connected to the support block 7 A connecting spring 10 is connected, and buckle grooves 11 are provided at the bottom ends of the two side walls of the semicircular ring plate 5. The buckle grooves 11 are snap-fitted with the buckle blocks 9. The buckle blocks 9 are rotated, and the buckle blocks 9 rotate with the hinge between the buckle blocks 9 and the grooves 8 as the rotation center. The buckle blocks 9 generate a moving torsional force on the connecting spring 10. After the filter screen 4 under the semicircular ring plate 5 is squeezed and installed in the filter tube 3, the buckle blocks 9 are rotated back to their original position after receiving the reset torsional force of the connecting spring 10, and the buckle blocks 9 are pressed on the bottom ends of the buckle grooves 11, which have a certain downward extrusion and limiting effect on the semicircular ring plate 5, ensuring that the filter screen 4 under the semicircular ring plate 5 is only buckled and installed in the filter tube 3. At the same time, it is also convenient to rotate the buckle blocks 9 to pull out the filter screen 4 from the top of the filter tube 3 for cleaning and replacement.

[0023] like Figure 4 As shown, the filter screen 4 includes a primary filter screen, a secondary filter screen and a tertiary filter screen which are arranged in sequence at the bottom of the semicircular ring plate 5 to achieve graded filtration of the exhausted gas.

[0024] like Figure 1 and 2 As shown, the connection between the filter tube 3 and the exhaust pipe 2 is installed and connected via a flange connection part 12, one end of the filter tube 3 extends to the inside of the exhaust pipe 2 and is contacted and connected via a sealing ring to ensure the sealing of the connection between the filter tube 3 and the exhaust pipe 2, and the end of the filter tube 3 away from the exhaust pipe 2 is connected to the outlet pipe 13 via a thread.

[0025] When in use, the buckling block 9 is rotated, and the buckling block 9 rotates with its hinge with the groove 8 as the rotation center. The buckling block 9 generates a moving torsional force on the connecting spring 10, and the filter screen 4 under the semicircular ring plate 5 is inserted from the top wall of the filter tube 3. The sealing gasket 6 is tightly fitted with the inner wall of the filter tube 3 to ensure the sealing between the filter screen 4 and the inner wall of the filter tube 3. After the filter screen 4 is completely installed in the filter tube 3, the buckling block 9 is rotated back to its original position after receiving the reset torsional force of the connecting spring 10, and the buckling block 9 is pressed on the bottom end of the buckle groove 11, which has a certain downward extrusion and limiting effect on the semicircular ring plate 5, ensuring that the filter screen 4 under the semicircular ring plate 5 is only buckled and installed in the filter tube 3. The filter screen 4 now filters the discharged gas in a graded manner. The buckling block 9 is rotated away from the buckle groove 11, and the semicircular ring plate 5 is pulled out from the top of the filter tube 3 to clean and replace the filter screen 4.

[0026] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A cryogenic separation device, comprising a box (1), the top of the box (1) being connected to an exhaust pipe (2), characterized in that: A filter tube (3) is installed at one end of the exhaust pipe (2) away from the housing (1), a filter screen (4) is installed in the filter tube (3), a semicircular ring plate (5) is connected to the top of the filter screen (4), the semicircular ring plate (5) is fitted and installed with the top of the filter tube (3), sealing gaskets (6) are arranged on the front and rear sides of the filter screen (4), the sealing gasket (6) is tightly fitted with the inner wall of the filter tube (3), support blocks (7) are arranged on the outer walls of both sides of the filter tube (3), a groove (8) is provided at the side wall of the support block (7), a buckling block (9) is hinged in the groove (8), a connecting spring (10) is connected between the bottom wall of the buckling block (9) and the support block (7), buckling grooves (11) are provided at the bottom ends of the two side walls of the semicircular ring plate (5), and the buckling grooves (11) are fitted and snap-fitted with the buckling blocks (9).

2. A cryogenic separation device according to claim 1, characterized in that: The filter screen (4) comprises a primary filter screen (4), a secondary filter screen (4) and a tertiary filter screen (4) which are arranged in sequence at the bottom of the semicircular ring plate (5).

3. A cryogenic separation device according to claim 1, characterized in that: The connection between the filter tube (3) and the exhaust pipe (2) is installed and connected via a flange connection portion (12), and one end of the filter tube (3) extends to the inside of the exhaust pipe (2) and is contact-connected via a sealing ring.

4. A cryogenic separation device according to claim 3, characterized in that: One end of the filter tube (3) away from the exhaust pipe (2) is connected to an exhaust pipe (13) via a thread.

5. A cryogenic separation device according to claim 4, characterized in that: The exhaust pipe (2) is an L-shaped pipe.

6. A cryogenic separation device according to claim 1, characterized in that: The buckling block (9) is arranged in a C-shaped structure.

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