VPSA (Vacuum Pressure Swing Adsorption) structure

Abstract

The utility model discloses a VPSA pressure swing adsorption structure which comprises an absorption pump, a pressure swing pump and an adsorption filter cartridge, the pressure swing pump is arranged at the top end of the adsorption filter cartridge, the absorption pump is arranged at the top of the pressure swing pump through a suction pipe, and an adsorption filter element is arranged in the adsorption filter cartridge. The air purifier is provided with the two adsorption filter cartridges, the two adsorption filter cartridges are connected through the exhaust pipe, and the exhaust port is formed in the middle of the exhaust pipe, so that double-foot air adsorption treatment can be carried out at the same time through the air purifier, air can be circularly treated between the two filter cartridges, and the adsorption treatment can be more thorough and higher in efficiency; the pressure swing pumps are arranged at the top ends of the two adsorption filter cartridges, the pressure of sucked air can be adjusted through the pressure swing pumps, overpressure of the adsorption filter cartridges can be avoided, safety can be improved, overlarge pressure can be prevented, the absorption pump is arranged at the top of each pressure swing pump through a suction pipe, and the air adsorption efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the field related to the VPSA pressure swing adsorption structure, and specifically relates to a VPSA pressure swing adsorption structure. Background Technique

[0002] In the industrial pressure swing adsorption (PSA) process, adsorbents usually adsorb the easily adsorbed components in the mixed gas at normal temperature and relatively high pressure, and the components that are not easily adsorbed flow out from one end of the bed layer. Then, the pressure of the adsorbent bed layer is reduced to desorb the adsorbed components, which are discharged from the other end of the bed layer, thereby realizing the separation and purification of the gas, and at the same time, the adsorbent is regenerated. However, in the usual PSA process, two methods can be used to completely regenerate the adsorbent: one is to "flush" the bed layer with the product gas to reduce the partial pressure of the adsorbed impurities and displace the more difficult-to-desorb impurities. Its advantage is that it can be completed under normal pressure, but the disadvantage is that some product gas will be lost more.

[0003] For example, the authorized patent with the publication number CN213528033U (self-clamping device for VPSA pressure swing adsorption oxygen production adsorption tank): includes a tank body, a cover plate is arranged at the upper opening of the tank body, an installation hole is opened in the middle of the self-clamping device, a ceramic ball is arranged at the upper end of the installation hole, and alumina is respectively arranged at the lower end of the molecular sieve and the upper end of the self-clamping device inside the tank body. This self-clamping device for VPSA pressure swing adsorption oxygen production adsorption tank changes the original manual clamping method to automatic clamping, does not need to be operated when the equipment is shut down, reduces manual operation, optimizes personnel operation, each sector-shaped pressing plate is convenient for disassembly and replacement, meets different equipment requirements and is also convenient for future equipment maintenance work. At the same time, the ceramic ball can increase the gravity, making the force on the sector-shaped pressing plate more uniform, and it is not easy to cause the pressing plate to deform when there is air pressure and vacuum pumping, and the molecular sieve is not easy to run out or pulverize, greatly improving the practicability of the sector-shaped pressing plate;

[0004] The above-mentioned prior art has insufficient absorption efficiency for air, low adsorption efficiency, and cannot adjust the air pressure during the adsorption process, is not safe enough to use, and cannot control double-group simultaneous adsorption, resulting in low adsorption and absorption efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to provide a VPSA pressure swing adsorption structure to solve the problems of insufficient air absorption efficiency, low adsorption efficiency, inability to adjust the air pressure during the adsorption process, lack of safety in use, inability to control double-group simultaneous adsorption, and low adsorption and absorption efficiency mentioned in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: a VPSA pressure swing adsorption structure, including an absorption pump, a pressure swing pump, and an adsorption filter cartridge. The pressure swing pump is provided at the top of the adsorption filter cartridge. The absorption pump is provided at the top of the pressure swing pump through a suction pipe. An adsorption filter element is provided inside the adsorption filter cartridge.

[0007] In a further embodiment, there are two adsorption filter cartridges in total, and the two adsorption filter cartridges are connected by an exhaust pipe. An exhaust port is provided in the middle of the exhaust pipe.

[0008] In a further embodiment, a pneumatic cylinder body is provided at one end of the pressure swing pump, and a pressing plate controlled by a piston rod is provided inside the pressure swing pump.

[0009] In a further embodiment, a side mounting port is provided at the other end port of the pressure swing pump, and a lower mounting port is provided at the bottom of the pressure swing pump.

[0010] In a further embodiment, a plug is provided at the port of the adsorption filter cartridge, and the plug is fixedly embedded in the lower mounting port in the middle of the bottom end of the pressure swing pump.

[0011] In a further embodiment, there are two pressure swing pumps in total, and the two pressure swing pumps are communicated through a connecting pipe. A control panel is provided on the front of the pressure swing pump.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. The utility model is provided with two adsorption filter cartridges, which are connected by an exhaust pipe between the two adsorption filter cartridges, and an exhaust port is provided in the middle of the exhaust pipe. Through this, dual-foot air adsorption treatment can be carried out simultaneously, and the air can be circulated between the two filter cartridges for treatment, so that the adsorption treatment can be more thorough and the efficiency can be higher.

[0014] 2. The tops of the two adsorption filter cartridges of the utility model are both provided with pressure swing pumps. Through the pressure swing pumps, the pressure of the inhaled air can be adjusted, so that the adsorption filter cartridges can be prevented from overpressure, the safety can be improved, the excessive pressure can be prevented, and an absorption pump is provided at the top of the pressure swing pump through a suction pipe, so that the air adsorption efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a VPSA pressure swing adsorption structure of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the adsorption filter cartridge of the present utility model;

[0017] Figure 3 is a schematic structural diagram of the pressure swing pump of the present utility model;

[0018] Figure 4 This is a schematic structural diagram of part A of the present utility model.

[0019] In the figure: 1, absorption pump; 2, suction pipe; 3, pressure-changing pump; 4, adsorption filter cartridge; 5, exhaust pipe; 6, exhaust port; 7, pneumatic cylinder body; 8, piston rod; 9, extrusion plate; 10, lower installation port; 11, side installation port; 12, adsorption filter element. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] Please refer to Figures 1-4 , an embodiment provided by the present utility model: a VPSA pressure swing adsorption structure, including an absorption pump 1, a pressure-changing pump 3 and an adsorption filter cartridge 4. A pressure-changing pump 3 is provided at the top end of the adsorption filter cartridge 4. An absorption pump 1 is provided at the top of the pressure-changing pump 3 through a suction pipe 2. An adsorption filter element 12 is provided inside the adsorption filter cartridge 4.

[0022] The pressure of the inhaled air can be adjusted through the pressure-changing pump 3. The air is inhaled through the absorption pump 1. The air can be adsorbed through the adsorption filter element 12. The air is introduced into the pressure-changing pump 3 through the suction pipe 2.

[0023] Further, two adsorption filter cartridges 4 are provided in total, and the two adsorption filter cartridges 4 are connected through an exhaust pipe 5. An exhaust port 6 is provided in the middle of the exhaust pipe 5. The air between the two adsorption filter cartridges 4 can be communicated through the exhaust pipe 5.

[0024] Further, a pneumatic cylinder body 7 is provided at one end of the pressure-changing pump 3. An extrusion plate 9 controlled by a piston rod 8 is provided inside the pressure-changing pump 3. The piston rod 8 is telescopically controlled through the pneumatic cylinder body 7, so as to control the extrusion plate 9 to extrude the air, so that the pressure can be changed.

[0025] Further, a side installation port 11 is provided at the other end port of the pressure-changing pump 3, and a lower installation port 10 is provided at the bottom of the pressure-changing pump 3. The two pressure-changing pumps 3 can be communicated through a connecting pipe through the side installation port 11. It is convenient to be assembled with the top of the adsorption filter cartridge 4 through the lower installation port 10.

[0026] Further, a plug is provided at the port of the adsorption filter cartridge 4, and the plug is fixedly embedded with the lower installation port 10 in the middle of the bottom end of the pressure-changing pump 3. It is convenient to assemble the adsorption filter cartridge 4 and the pressure-changing pump 3 through the plug.

[0027] Further, two pressure-changing pumps 3 are provided in total, and the two pressure-changing pumps 3 are communicated through a connecting pipe. A control panel is provided on the front of the pressure-changing pump 3.

[0028] Working principle: When in use, the air is absorbed by the absorption pump 1 and inhaled into the pressure-changing pump 3 through the suction pipe 2. The expansion and contraction of the piston rod 8 is controlled by the pneumatic cylinder body 7 inside the pressure-changing pump 3, so that the piston rod 8 controls the extrusion plate 9 to extrude the air, and the air is circulated between the two pressure-changing pumps 3 through the connecting pipe via the side mounting port 11. The air is inhaled by the adsorption filter cartridge 4, and the air is adsorbed and processed by the adsorption filter element 12 inside it. The air can be circulated between the two adsorption filter cartridges 4 through the exhaust pipe 5, and the adsorbed air is discharged through the exhaust port 6. The lower mounting port 10 facilitates the inlaid connection with the top of the adsorption filter cartridge 4.

[0029] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A VPSA pressure swing adsorption structure, comprising an absorption pump (1), a pressure swing pump (3) and an adsorption filter cartridge (4), characterized in that: A variable pressure pump (3) is provided at the top of the adsorption filter cartridge (4), an absorption pump (1) is provided at the top of the variable pressure pump (3) via a suction pipe (2), and an adsorption filter element (12) is provided inside the adsorption filter cartridge (4).

2. A VPSA pressure swing adsorption structure according to claim 1, characterized in that: There are two adsorption filter cartridges (4) in total, and the two adsorption filter cartridges (4) are connected via an exhaust pipe (5), and an exhaust port (6) is provided in the middle of the exhaust pipe (5).

3. A VPSA pressure swing adsorption structure according to claim 1, characterized in that: A pneumatic cylinder (7) is provided at one end of the variable pressure pump (3), and an extrusion plate (9) controlled by a piston rod (8) is provided inside the variable pressure pump (3).

4. A VPSA pressure swing adsorption structure according to claim 3, characterized in that: A side mounting port (11) is provided at the other end port of the variable pressure pump (3), and a lower mounting port (10) is provided at the bottom of the variable pressure pump (3).

5. The VPSA pressure swing adsorption structure according to claim 1, characterized in that: A plug is provided at the port of the adsorption filter cartridge (4), and the plug is embedded and fixed in the lower mounting opening (10) in the middle of the bottom end of the transformer pump (3).

6. The VPSA pressure swing adsorption structure according to claim 1, characterized in that: There are two variable pressure pumps (3) in total, and the two variable pressure pumps (3) are connected via a connecting pipe. A control panel is provided on the front of the variable pressure pump (3).

Images