Air oxygen and nitrogen separation device

Abstract

The utility model provides an air oxygen-nitrogen separation device which comprises a separation main body, a sealing cover arranged at the top of the separation main body, a nitrogen outlet pipe arranged at the top of the sealing cover, a flow guide pipe arranged at the bottom of the separation main body and connected with a compressor, and an adsorbent arranged in the separation main body, a supporting table is arranged on the inner wall of the separation body, a supporting hole plate arranged above the supporting table is arranged on the inner wall of the separation body, a supporting net cylinder used for containing an adsorbent is arranged at the top of the supporting hole plate, a connecting hole is formed in the top of the separation body, a pressing hole plate is arranged in the connecting hole, and a pressing net is embedded into the bottom of the pressing hole plate. The bottom of the pressing pore plate is provided with a second sealing ring inserted into the separation main body, the top of the separation main body is embedded with a first sealing ring, and the bottom of the sealing cover is provided with a pressing ring inserted into the first sealing ring.

Description

Technical Field

[0001] The utility model relates to an air oxygen and nitrogen separation device, in particular to an air oxygen and nitrogen separation device. Background Art

[0002] Air separation, abbreviated as ASA, is a process that uses the different physical properties of the components in the air to separate oxygen and nitrogen from the air, or to extract rare gases such as helium and argon at the same time. It is widely used in industrial sectors such as metallurgy, chemical industry, petroleum, machinery, mining, food, and military. Generally, cryogenic method and adsorption method are used to achieve air separation.

[0003] In the prior art, when the existing air oxygen and nitrogen separation device uses the adsorption method to separate air, when the adsorption capacity of the internal adsorbent decreases, it is inconvenient to replace the internal adsorbent, and the use effect is poor. Now there is an urgent need for an air oxygen and nitrogen separation device to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an air oxygen and nitrogen separation device to solve the problems raised in the above background technology. The utility model has a reasonable structure, convenient adsorbent replacement and good use effect.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical solutions: an air oxygen and nitrogen separation device, comprising:

[0006] A separation body is provided with a sealing cover on the top of the separation body, a nitrogen outlet pipe is provided on the top of the sealing cover, a guide pipe connected to the compressor is provided at the bottom of the separation body, and an adsorbent is provided inside the separation body;

[0007] A support platform is provided on the inner wall of the separation body, and a support orifice plate is provided on the inner wall of the separation body and is placed above the support platform. A support mesh cylinder for supporting the adsorbent is embedded in the top of the support orifice plate. A connecting hole is provided on the top of the separation body, and a pressing orifice plate is provided inside the connecting hole. A pressing mesh is embedded in the bottom of the pressing orifice plate, and a second sealing ring inserted into the interior of the separation body is provided at the bottom of the pressing orifice plate. A first sealing ring is embedded in the top of the separation body, and a pressing ring inserted into the interior of the first sealing ring is provided at the bottom of the sealing cover.

[0008] Furthermore, an annular mounting groove matching the first sealing ring is provided on the top of the separation body, a first sealing groove matching the pressing ring is provided inside the first sealing ring, and a second sealing groove matching the second sealing ring is provided inside the separation body. The second sealing groove is placed below the connecting hole and is connected to the connecting hole.

[0009] Furthermore, the upper end surface of the first sealing ring is flush with the upper end surface of the separation body.

[0010] Furthermore, an oxygen outlet pipe is provided at the bottom of the guide pipe, a second valve is provided at the bottom of the oxygen outlet pipe, an air inlet pipe connected to the compressor is provided on the side wall of the guide pipe, a third valve is provided on the air inlet pipe, and a first valve is provided on the nitrogen outlet pipe.

[0011] Furthermore, a gas collecting groove connected to the nitrogen outlet pipe is provided at the bottom of the sealing cover, and fastening bolts are provided between the sealing cover and the separation body.

[0012] Furthermore, the pressing mesh, the pressing orifice plate and the supporting orifice plate are all circular.

[0013] Furthermore, the adsorbent is a carbon molecular sieve adsorbent.

[0014] According to an air oxygen and nitrogen separation device of the present invention, when it is necessary to replace the adsorbent inside the separation body, the sealing cover is first removed, and the pressing ring on the sealing cover loses the pressure on the first sealing ring, and then the pressing hole plate is taken out through the hole on the pressing hole plate, and at the same time, the pressing net follows the pressing hole plate to leave the interior of the separation body, and then force is applied to the supporting net cylinder to take it out, so that the adsorbent inside the supporting net cylinder is taken out and replaced. After the replacement is completed, the supporting net cylinder, the pressing hole plate, the pressing net, and the sealing cover are returned to the initial positions, thereby facilitating the replacement of the adsorbent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0016] Figure 1 This is a perspective view of an air oxygen and nitrogen separation device according to one embodiment of the present utility model;

[0017] Figure 2 This is a front cross-sectional view of an air oxygen and nitrogen separation device according to one embodiment of the present utility model;

[0018] Figure 3 According to an embodiment of the present invention Figure 2 A magnified view of middle A;

[0019] Figure 4 This is a three-dimensional diagram of a pressing hole plate in an air oxygen and nitrogen separation device according to one embodiment of the present invention;

[0020] In the figure: 1. Separation body; 101. Support platform; 102. Connecting hole; 2. Sealing cover; 21. Fastening bolt; 22. Gas collecting tank; 3. Nitrogen outlet pipe; 4. First valve; 5. Flow guide pipe; 6. Oxygen outlet pipe; 7. Second valve; 8. Inlet pipe; 9. Third valve; 10. Support orifice plate; 11. Support mesh cylinder; 12. Adsorbent; 13. Pressing mesh; 14. Pressing orifice plate; 15. Annular mounting groove; 16. Pressing ring; 17. First sealing ring; 171. First sealing groove; 18. Second sealing ring; 19. Second sealing groove. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1 As shown, the utility model provides a technical solution: an air oxygen and nitrogen separation device, comprising:

[0023] A separation body 1 is provided with a sealing cover 2 on the top of the separation body 1, a nitrogen outlet pipe 3 is provided on the top of the sealing cover 2, a guide pipe 5 connected to the compressor is provided at the bottom of the separation body 1, and an adsorbent 12 is provided inside the separation body 1;

[0024] The inner wall of the separation body 1 is provided with a support platform 101, and the inner wall of the separation body 1 is provided with a support orifice plate 10 placed above the support platform 101, and a support mesh tube 11 for placing the adsorbent 12 is provided on the top of the support orifice plate 10, and a connecting hole 102 is opened at the top of the separation body 1, and a pressing orifice plate 14 is provided inside the connecting hole 102, and a pressing mesh 13 is embedded in the bottom of the pressing orifice plate 14, and a second sealing ring 18 inserted into the interior of the separation body 1 is provided at the bottom of the pressing orifice plate 14, and a first sealing ring 17 is embedded in the top of the separation body 1, and a pressing ring 16 inserted into the interior of the first sealing ring 17 is provided at the bottom of the sealing cover 2. The designed guide pipe 5 delivers the oxygen-nitrogen mixed gas to the interior of the separation body 1 under the action of the compressor, and the mixed gas is evenly dispersed through the support mesh tube 11 into the interior of the adsorbent 12 under the action of the holes in the support orifice plate 10, and adsorbs oxygen in the mixed gas under the action of the adsorbent 12. The gas after adsorbing oxygen is nitrogen, which is discharged from The nitrogen flows out through the outlet pipe 3. When the oxygen adsorbent is saturated, the compressed air is stopped. At this time, the pressure inside the separation body 1 is reduced, and the oxygen gas runs out of the adsorbent 12 and flows out from the guide pipe 5. When the adsorbent 12 inside the separation body 1 needs to be replaced, the sealing cover 2 is first removed. The pressing ring 16 on the sealing cover 2 loses the pressure on the first sealing ring 17, and then the pressing hole plate 14 is taken out through the hole on the pressing hole plate 14. At the same time, the pressing net 13 follows the pressing hole plate 14 to leave the separation body 1, and then force is applied to the supporting mesh tube 11 to take it out, thereby taking out and replacing the adsorbent 12 inside the supporting mesh tube 11. After the replacement is completed, the supporting mesh tube 11, the pressing hole plate 14, the pressing net 13, and the sealing cover 2 are returned to the initial position, thereby facilitating the replacement of the adsorbent 12. A closed space is formed between the pressing net 13 and the supporting mesh tube 11, thereby preventing the adsorbent 12 from separating from the supporting mesh tube 11.

[0025] Reference Figure 2 、 Figure 3 and Figure 4 An annular mounting groove 15 matching the first sealing ring 17 is provided on the top of the separation body 1, a first sealing groove 171 matching the pressing ring 16 is provided inside the first sealing ring 17, and a second sealing groove 19 matching the second sealing ring 18 is provided inside the separation body 1. The second sealing groove 19 is placed below the connecting hole 102 and is connected to the connecting hole 102. This design improves the sealing of the connection.

[0026] Reference Figure 2 The upper end surface of the first sealing ring 17 is flush with the upper end surface of the separation body 1, which improves the rationality of the design.

[0027] Reference Figure 1 and Figure 2An oxygen outlet pipe 6 is provided at the bottom of the guide pipe 5, a second valve 7 is provided at the bottom of the oxygen outlet pipe 6, an air inlet pipe 8 connected to the compressor is provided on the side wall of the guide pipe 5, a third valve 9 is provided on the air inlet pipe 8, and a first valve 4 is provided on the nitrogen outlet pipe 3. This design stops the flow of compressed air by closing the third valve 9. At this time, the pressure inside the separation body 1 is reduced, and the oxygen gas runs out of the adsorbent 12, flows out of the guide pipe 5, and is discharged from the oxygen outlet pipe 6.

[0028] Reference Figure 2 and Figure 3 A gas collecting groove 22 connected to the nitrogen outlet pipe 3 is provided at the bottom of the sealing cover 2, and a fastening bolt 21 is provided between the sealing cover 2 and the separation body 1. This design improves the stability of the connection.

[0029] Reference Figure 1 、 Figure 2 and Figure 4 The pressing mesh 13, the pressing hole plate 14 and the supporting hole plate 10 are all circular, and the adsorbent 12 is a carbon molecular sieve adsorbent, which improves the rationality of the design.

[0030] Reference Figures 1-4 As an embodiment of the present utility model: when it is necessary to separate the oxygen-nitrogen mixed gas, the staff sends the oxygen-nitrogen mixed gas to the interior of the separation body 1 through the air inlet pipe 8 through the guide pipe 5 under the action of the compressor. The mixed gas is evenly dispersed under the action of the holes in the support orifice plate 10 and passes through the support mesh tube 11 into the interior of the adsorbent 12. Under the action of the adsorbent 12, the oxygen in the mixed gas is adsorbed. The gas after adsorbing oxygen is nitrogen, which enters the gas collecting tank 22 and flows out from the nitrogen outlet pipe 3. When the oxygen adsorbent is saturated, the third valve 9 is closed to stop the compressed air. At this time, the pressure inside the separation body 1 is reduced, and the oxygen gas escapes from the adsorbent 12 and flows out from the guide pipe 5.

[0031] When it is necessary to replace the adsorbent 12 inside the separation body 1, first remove the sealing cover 2, then the pressing ring 16 on the sealing cover 2 loses the pressure on the first sealing ring 17, and then the pressing hole plate 14 is taken out through the hole on the pressing hole plate 14, and at the same time, the pressing net 13 follows the pressing hole plate 14 to leave the inside of the separation body 1, and then force is applied to the supporting net tube 11 to take it out, so that the adsorbent 12 inside the supporting net tube 11 is taken out and replaced. After the replacement is completed, the supporting net tube 11, the pressing hole plate 14, the pressing net 13, and the sealing cover 2 are returned to the initial position, thereby facilitating the replacement of the adsorbent 12, wherein a closed space is formed between the pressing net 13 and the supporting net tube 11, thereby preventing the adsorbent 12 from separating from the supporting net tube 11, thereby improving the practicality of the present invention.

[0032] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An air oxygen and nitrogen separation device, comprising: A separation body (1), wherein a sealing cover (2) is provided on the top of the separation body (1), a nitrogen outlet pipe (3) is provided on the top of the sealing cover (2), a flow guide pipe (5) connected to a compressor is provided on the bottom of the separation body (1), and an adsorbent (12) is provided inside the separation body (1); It is characterized in that The inner wall of the separation body (1) is provided with a support platform (101), the inner wall of the separation body (1) is provided with a support hole plate (10) placed above the support platform (101), the top of the support hole plate (10) is provided with a support mesh cylinder (11) for placing the adsorbent (12), the top of the separation body (1) is provided with a connecting hole (102), the inside of the connecting hole (102) is provided with a pressing hole plate (14), the bottom of the pressing hole plate (14) is embedded with a pressing net (13), the bottom of the pressing hole plate (14) is provided with a second sealing ring (18) inserted into the inside of the separation body (1), the top of the separation body (1) is embedded with a first sealing ring (17), and the bottom of the sealing cover (2) is provided with a pressing ring (16) inserted into the inside of the first sealing ring (17).

2. The air oxygen and nitrogen separation device according to claim 1, characterized in that: The top of the separation body (1) is provided with an annular mounting groove (15) that matches the first sealing ring (17), the interior of the first sealing ring (17) is provided with a first sealing groove (171) that matches the pressing ring (16), and the interior of the separation body (1) is provided with a second sealing groove (19) that matches the second sealing ring (18), and the second sealing groove (19) is placed below the connecting hole (102) and is connected to the connecting hole (102).

3. The air oxygen and nitrogen separation device according to claim 1, characterized in that: The upper end surface of the first sealing ring (17) is flush with the upper end surface of the separation body (1).

4. The air oxygen and nitrogen separation device according to claim 1, characterized in that: An oxygen outlet pipe (6) is provided at the bottom of the flow guide pipe (5), a second valve (7) is provided at the bottom of the oxygen outlet pipe (6), an air inlet pipe (8) connected to a compressor is provided on the side wall of the flow guide pipe (5), a third valve (9) is provided on the air inlet pipe (8), and a first valve (4) is provided on the nitrogen outlet pipe (3).

5. The air oxygen and nitrogen separation device according to claim 1, characterized in that: A gas collecting groove (22) connected to the nitrogen outlet pipe (3) is provided at the bottom of the sealing cover (2), and a fastening bolt (21) is provided between the sealing cover (2) and the separation body (1).

6. The air oxygen and nitrogen separation device according to claim 1, characterized in that: The pressing net (13), the pressing orifice plate (14) and the supporting orifice plate (10) are all circular.

7. The air oxygen and nitrogen separation device according to claim 1, characterized in that: The adsorbent (12) is a carbon molecular sieve adsorbent.

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