Oxygen-enriched tail gas recovery device of pressure swing adsorption nitrogen generator

Abstract

The utility model discloses pressure swing adsorption nitrogen making machine oxygen -enriched tail gas recovery device, including regulating valve body, the inside fixed baffle of regulating valve body, the top surface of baffle is opened and has the through -hole, and the through -hole penetrates baffle, the bottom surface fixed flow guide frame of baffle, still including filter assembly, filter assembly sets up in one end of regulating valve body for filtering the impurity in oxygen -enriched gas, buffer assembly, buffer assembly sets up in the bottom surface of regulating valve body for the stable delivery of oxygen -enriched gas. In filter assembly, the symmetrical adjusting frame is equipped in mounting frame, and the symmetrical filter plate can be installed in adjusting frame, so that the device can replace filter plate fast, and filter plate is installed on the gear ring, under the drive of adjusting motor, transmission gear takes the gear ring rotation, makes the hole on filter plate and filter hole on mounting frame alternate adjustment, has realized the filtration of device to different impurities, has improved the recovery efficiency of device to oxygen -enriched gas.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust gas recovery devices, specifically an oxygen-enriched exhaust gas recovery device for a pressure swing adsorption nitrogen generator. Background Technology

[0002] The pressure swing adsorption (PSA) nitrogen generator oxygen-enriched tail gas recovery device is a device used to recover the oxygen-enriched tail gas generated during the PSA nitrogen generation process. The PSA nitrogen generator utilizes the difference in adsorption capacity of carbon molecular sieves for oxygen and nitrogen under different pressures, separating oxygen and nitrogen from the air through pressure adsorption and depressurization desorption, thereby obtaining high-purity nitrogen gas.

[0003] Existing oxygen-enriched tail gas recovery devices for pressure swing adsorption nitrogen generators use self-regulating valves to stably collect oxygen-enriched gas. However, when the gas rapidly impacts the regulating valve, it can easily be damaged, affecting the stable collection of oxygen-enriched gas. Furthermore, in order to maintain the purity of the gas during the collection process, the gas needs to be filtered. However, prolonged use can easily cause the filter components to become clogged and difficult to replace, reducing the practicality of the device.

[0004] Therefore, there is an urgent need for a pressure swing adsorption (PSA) nitrogen generator oxygen-enriched tail gas recovery device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an oxygen-enriched tail gas recovery device for a pressure swing adsorption (PSA) nitrogen generator, to solve the problems mentioned in the background art. Existing PSA nitrogen generator oxygen-enriched tail gas recovery devices use a self-regulating valve to stably collect oxygen-enriched gas, but this valve is easily damaged when the gas rapidly impacts it, affecting the stable collection of oxygen-enriched gas. Furthermore, to ensure gas purity during collection, the gas needs to be filtered, but prolonged use leads to easy clogging of the filter components, making replacement difficult and reducing the device's practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure swing adsorption (PSA) nitrogen generator oxygen-enriched tail gas recovery device, comprising a regulating valve body, wherein a partition is fixed inside the regulating valve body, a through hole is opened on the top surface of the partition and the through hole penetrates the partition, and a flow guide frame is fixed on the bottom surface of the partition; further comprising a filter assembly, wherein the filter assembly is disposed at one end of the regulating valve body for filtering impurities in the oxygen-enriched gas; and a buffer assembly, wherein the buffer assembly is disposed on the bottom surface of the regulating valve body for stable delivery of the oxygen-enriched gas.

[0007] Furthermore, the filter assembly includes an installation frame, within which an adjustment frame is provided, and the adjustment frame is movably connected to the installation frame. A storage slot and a positioning slot are respectively provided on both sides of the adjustment frame.

[0008] Furthermore, the inner side of the mounting frame is provided with a telescopic groove, a positioning ball is provided in the telescopic groove, and the positioning ball is movably connected to the positioning groove. A positioning spring is provided between the positioning ball and the telescopic groove.

[0009] Furthermore, the adjustment frame is provided with a gear ring, and the gear ring is axially symmetrical about the adjustment frame. The gear ring passes through the side of the receiving groove. A guide groove is provided on the inner side of the gear ring. A filter plate is provided in the gear ring. A guide block is fixed on the side of the filter plate, and the guide block is movably connected to the guide groove.

[0010] Furthermore, an adjusting motor is fixed inside the mounting frame, and a transmission gear is fixed at the output end of the adjusting motor. The transmission gear meshes with a gear ring. Filter holes are evenly opened on the surface of the mounting frame, and the filter holes penetrate both sides of the mounting frame.

[0011] Furthermore, the buffer assembly includes a buffer box, an adjustment box is fixed to the side of the buffer box, the adjustment box extends through the side of the buffer box, and the adjustment box has an axially symmetrical structure about the buffer box.

[0012] Furthermore, a support ring is fixed in the buffer box, a buffer plate is provided inside the buffer box, and the buffer plate is movably connected to the buffer box. Guide posts are fixed in an array on the bottom surface of the buffer plate, and the guide posts pass through the support ring.

[0013] Furthermore, the surface of the guide post is provided with a buffer spring, and the two ends of the buffer spring are respectively fixedly connected to the buffer plate and the support ring. One end of the adjustment box is fixed with an electric telescopic rod, and the electric telescopic rod passes through the adjustment box. The output end of the electric telescopic rod is fixed with an adjustment block, and the adjustment block is movably connected to the adjustment box.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The pressure swing adsorption nitrogen generator oxygen-enriched tail gas recovery device of this utility model has a filter assembly at one end of the regulating valve body. In the filter assembly, there are symmetrical regulating frames in the mounting frame. Symmetrical filter plates can be installed in the regulating frames, so that the device can quickly replace the filter plates. Moreover, the filter plates are installed on the gear ring. Under the drive of the regulating motor, the transmission gear drives the gear ring to rotate, so that the holes on the filter plate and the filter holes on the mounting frame are alternately adjusted, so as to realize the filtration of different impurities and improve the recovery efficiency of the device for oxygen-enriched gas.

[0016] 2. The oxygen-enriched tail gas recovery device of the pressure swing adsorption nitrogen generator of this utility model is provided with a buffer assembly on the bottom surface of the regulating valve body. In the buffer assembly, a buffer plate is provided in the buffer box. When the gas flows rapidly in the regulating valve body, it will impact the buffer plate through the guide frame. Under the action of the buffer spring, the flow rate of the gas is buffered. This design enables the device to deliver oxygen-enriched gas efficiently and stably, improving the practicality of the device. Attached Figure Description

[0017] Figure 1 This is an isometric view of the present invention;

[0018] Figure 2 This is an overall sectional view of the present invention;

[0019] Figure 3 This is an exploded view of the overall structure of this utility model;

[0020] Figure 4 This is a structural diagram of the filter assembly of this utility model;

[0021] Figure 5 This is a cross-sectional view of the filter assembly of this utility model;

[0022] Figure 6 This is an exploded view of the structure of the filter assembly of this utility model;

[0023] Figure 7 This is a cross-sectional view of the buffer assembly of this utility model;

[0024] Figure 8 This is an exploded view of the structure of the buffer component of this utility model.

[0025] In the diagram: 1. Filter assembly; 101. Mounting frame; 102. Filter hole; 103. Adjustment frame; 104. Storage slot; 105. Positioning slot; 106. Telescopic slot; 107. Transmission gear; 108. Gear ring; 109. Guide slot; 110. Guide block; 111. Filter plate; 112. Positioning spring; 113. Positioning ball; 114. Adjustment motor; 2. Buffer assembly; 201. Buffer box; 202. Adjustment box; 203. Adjustment block; 204. Electric telescopic rod; 205. Buffer plate; 206. Guide column; 207. Buffer spring; 208. Support ring; 3. Adjustment valve body; 4. Partition plate; 5. Flow guide frame; 6. Through hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-8 The oxygen-enriched tail gas recovery device for a pressure swing adsorption nitrogen generator provided by this utility model includes a regulating valve body 3, a partition 4 fixed inside the regulating valve body 3, a through hole 6 on the top surface of the partition 4, the through hole 6 penetrating the partition 4, and a flow guide frame 5 fixed on the bottom surface of the partition 4; it also includes a filter assembly 1, which is set at one end of the regulating valve body 3 for filtering impurities in the oxygen-enriched gas; and a buffer assembly 2, which is set at the bottom surface of the regulating valve body 3 for stable delivery of the oxygen-enriched gas.

[0028] The filter assembly 1 includes a mounting frame 101, within which an adjusting frame 103 is movably connected. The adjusting frame 103 has a storage slot 104 and a positioning slot 105 on its two sides. A telescopic groove 106 is formed on the inner side of the mounting frame 101, containing a positioning ball 113 movably connected to the positioning groove 105. A positioning spring 112 is provided between the positioning ball 113 and the telescopic groove 106. A gear ring 108 is provided within the adjusting frame 103, and the gear ring 108 is axially symmetrical about the adjusting frame 103. The structure includes a gear ring 108 that passes through the side of the receiving groove 104. A guide groove 109 is provided on the inner side of the gear ring 108. A filter plate 111 is provided in the gear ring 108. A guide block 110 is fixed on the side of the filter plate 111 and is movably connected to the guide groove 109. An adjusting motor 114 is fixed inside the mounting frame 101. A transmission gear 107 is fixed at the output end of the adjusting motor 114 and meshes with the gear ring 108. Filter holes 102 are evenly provided on the surface of the mounting frame 101 and pass through both sides of the mounting frame 101.

[0029] Specifically, in the filter assembly 1, the mounting frame 101 is provided with a symmetrical adjustment frame 103, and a symmetrical filter plate 111 can be installed in the adjustment frame 103, so that the device can quickly replace the filter plate 111. Moreover, the filter plate 111 is installed on the gear ring 108. Under the drive of the adjustment motor 114, the transmission gear 107 drives the gear ring 108 to rotate, so that the holes on the filter plate 111 and the filter holes 102 on the mounting frame 101 are alternately adjusted, thereby realizing the filtration of different impurities and improving the recovery efficiency of the device for oxygen-enriched gas.

[0030] The buffer assembly 2 includes a buffer box 201, an adjusting box 202 fixed to the side of the buffer box 201, the adjusting box 202 penetrating the side of the buffer box 201, and the adjusting box 202 having an axisymmetric structure about the buffer box 201. A support ring 208 is fixed in the buffer box 201. A buffer plate 205 is provided inside the buffer box 201 and is movably connected to the buffer box 201. A guide post 206 is fixed in an array on the bottom surface of the buffer plate 205 and penetrates the support ring 208. A buffer spring 207 is provided on the surface of the guide post 206 and both ends of the buffer spring 207 are fixedly connected to the buffer plate 205 and the support ring 208, respectively. An electric telescopic rod 204 is fixed to one end of the adjusting box 202 and penetrates the adjusting box 202. An adjusting block 203 is fixed to the output end of the electric telescopic rod 204 and is movably connected to the adjusting box 202.

[0031] Specifically, in the buffer assembly 2, the buffer box 201 is equipped with a buffer plate 205. When the gas flows rapidly in the regulating valve body 3, it will impact the buffer plate 205 through the guide frame 5. Under the action of the buffer spring 207, the flow rate of the gas is buffered. This design enables the device to efficiently and stably deliver oxygen-enriched gas, improving the practicality of the device.

[0032] Working principle: In the filter assembly 1, the mounting frame 101 is provided with a symmetrical adjustment frame 103. The symmetrical filter plates 111 can be installed in the adjustment frame 103, so that the device can quickly replace the filter plates 111. The filter plates 111 are mounted on the gear ring 108. Under the drive of the adjustment motor 114, the transmission gear 107 drives the gear ring 108 to rotate, so that the holes on the filter plates 111 and the filter holes 102 on the mounting frame 101 are alternately adjusted. When the adjustment frame 103 moves to a certain position in the mounting frame 101, the positioning ball 113 will connect with the positioning groove 105 under the action of the positioning spring 112, so as to fix the adjustment frame 103.

[0033] In the buffer assembly 2, the buffer box 201 is equipped with a buffer plate 205. When the gas flows rapidly in the regulating valve body 3, it will impact the buffer plate 205 through the guide frame 5. Under the action of the buffer spring 207, the flow rate of the gas is buffered. The function of the regulating box 202 is to increase the initial air pressure in the buffer box 201 by pushing the regulating block 203 into the buffer box 201 through the drive of the electric telescopic rod 204.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pressure swing adsorption nitrogen generator oxygen-enriched tail gas recovery device, including a regulating valve body (3), wherein a partition plate (4) is fixed inside the regulating valve body (3), a through hole (6) is opened on the top surface of the partition plate (4), and the through hole (6) penetrates the partition plate (4), and a flow guide frame (5) is fixed on the bottom surface of the partition plate (4). Its features are, Also includes: A filter assembly (1) is disposed at one end of the regulating valve body (3) for filtering impurities in the oxygen-enriched gas; A buffer assembly (2) is disposed on the bottom surface of the regulating valve body (3) for the stable delivery of oxygen-enriched gas.

2. The oxygen-enriched tail gas recovery device for a pressure swing adsorption nitrogen generator according to claim 1, characterized in that: The filter assembly (1) includes an installation frame (101), an adjustment frame (103) is provided inside the installation frame (101), and the adjustment frame (103) is movably connected to the installation frame (101). The adjustment frame (103) has a storage slot (104) and a positioning slot (105) on both sides respectively.

3. The oxygen-enriched tail gas recovery device for a pressure swing adsorption nitrogen generator according to claim 2, characterized in that: The inner side of the mounting frame (101) is provided with a telescopic groove (106), and a positioning ball (113) is provided in the telescopic groove (106). The positioning ball (113) is movably connected to the positioning groove (105), and a positioning spring (112) is provided between the positioning ball (113) and the telescopic groove (106).

4. The oxygen-enriched tail gas recovery device for a pressure swing adsorption nitrogen generator according to claim 3, characterized in that: The adjusting frame (103) is provided with a gear ring (108), and the gear ring (108) is axially symmetrical about the adjusting frame (103). The gear ring (108) passes through the side of the receiving groove (104). A guide groove (109) is provided on the inner side of the gear ring (108). A filter plate (111) is provided in the gear ring (108). A guide block (110) is fixed on the side of the filter plate (111), and the guide block (110) is movably connected to the guide groove (109).

5. The oxygen-enriched tail gas recovery device for a pressure swing adsorption nitrogen generator according to claim 4, characterized in that: An adjusting motor (114) is fixed inside the mounting frame (101). A transmission gear (107) is fixed at the output end of the adjusting motor (114), and the transmission gear (107) meshes with the gear ring (108). Filter holes (102) are evenly opened on the surface of the mounting frame (101), and the filter holes (102) pass through both sides of the mounting frame (101).

6. The oxygen-enriched tail gas recovery device for a pressure swing adsorption nitrogen generator according to claim 1, characterized in that: The buffer assembly (2) includes a buffer box (201), and an adjustment box (202) is fixed to the side of the buffer box (201). The adjustment box (202) penetrates the side of the buffer box (201) and has an axisymmetric structure about the buffer box (201).

7. The oxygen-enriched tail gas recovery device for a pressure swing adsorption nitrogen generator according to claim 6, characterized in that: A support ring (208) is fixed in the buffer box (201). A buffer plate (205) is provided inside the buffer box (201), and the buffer plate (205) is movably connected to the buffer box (201). A guide post (206) is fixed in an array on the bottom surface of the buffer plate (205), and the guide post (206) passes through the support ring (208).

8. The oxygen-enriched tail gas recovery device for a pressure swing adsorption nitrogen generator according to claim 7, characterized in that: The surface of the guide post (206) is provided with a buffer spring (207), and the two ends of the buffer spring (207) are fixedly connected to the buffer plate (205) and the support ring (208) respectively. One end of the adjustment box (202) is fixed with an electric telescopic rod (204), and the electric telescopic rod (204) passes through the adjustment box (202). The output end of the electric telescopic rod (204) is fixed with an adjustment block (203), and the adjustment block (203) is movably connected to the adjustment box (202).

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