VPSA (pressure swing adsorption) oxygen generator

Abstract

The utility model relates to the technical field of oxygen generation equipment, and particularly discloses a VPSA (Pressure Swing Adsorption) oxygen generator, which comprises an air filter, an oxygen generator and a control system, the air inlet end of the booster blower is connected with the air outlet end of the air filter, and a branch pipe I and a branch pipe II are arranged at the air outlet end of the booster blower; the adsorption assembly comprises a mounting disc, two adsorption units are arranged on the mounting disc, one air vent A in each adsorption unit is connected with a third branch pipe and a fourth branch pipe, the first branch pipe and the second branch pipe are connected with the two third branch pipes respectively, and an air vent B in the last adsorption tank in each adsorption unit is connected with a fifth branch pipe; the air inlet end of the first buffer tank is respectively connected with the two branch pipes V; the air inlet end of the booster pump is connected with the air outlet end of the first buffer tank; the air inlet end of the second buffer tank is connected with the air outlet end of the booster pump, and the air outlet end of the second buffer tank is connected with a branch pipe VI; the air inlet end of the vacuum pump is connected with the two fourth branch pipes, and the air outlet end of the vacuum pump is connected with an air extracting pump.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen generation equipment, in particular to a VPSA pressure swing adsorption oxygen generator. Background Technique

[0002] Vacuum pressure swing adsorption (VPSA) technology is developed on the basis of pressure swing adsorption (PSA) technology. Pressure swing adsorption technology was first applied to the industrial gas separation field in the 1960s. With the continuous progress of technology and the increasing demand for higher efficiency and lower cost gas separation methods, VPSA technology gradually emerged in the 1980s.

[0003] VPSA technology mainly utilizes the difference in the adsorption capacity of adsorbents for different gas components under different pressures to achieve gas separation and purification. Due to its advantages such as flexible operation, low energy consumption, high product purity, and strong adaptability, it has been widely used in the industrial field.

[0004] At present, the adsorption tanks used in existing VPSA pressure swing adsorption oxygen generators often have a fixed volume. During use, it is impossible to understand according to actual production needs. Replacing or maintaining adsorption tanks of multiple models will increase production costs and cause waste of resources. Content of the Utility Model

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A VPSA pressure swing adsorption oxygen generator includes an air filter; a booster blower, whose intake end is connected to the outlet end of the air filter, and a branch pipe one and a branch pipe two are arranged at the outlet end of the booster blower; an adsorption assembly, including a mounting plate, a bracket is arranged at the bottom of the mounting plate, two adsorption units are arranged on the mounting plate, each adsorption unit includes a number of adsorption tanks connected in series in sequence, each adsorption tank includes a shell, a partition is arranged inside the shell to divide the shell into a cavity one and a cavity two, ventilation ports A and B are respectively arranged on the outer side of the shell corresponding to the cavity one and the cavity two, the cavity one and the cavity two are communicated, adsorption materials are filled in the cavity one and the cavity two, one of the ventilation ports A in each adsorption unit is connected to a branch pipe three and a branch pipe four, the branch pipe one and the branch pipe two are respectively connected to the two branch pipes three, a branch pipe five is connected to the ventilation port B on the last adsorption tank connected in series in each adsorption unit; a first buffer tank, whose intake end is respectively connected to the two branch pipes five; a booster pump, whose intake end is connected to the outlet end of the first buffer tank; a second buffer tank, whose intake end is connected to the outlet end of the booster pump, a branch pipe six is connected to the outlet end of the second buffer tank; a vacuum pump, whose intake end is respectively connected to the two branch pipes four.

[0007] Preferably, valves are provided on the first branch pipe, the second branch pipe, the third branch pipe, the fourth branch pipe and the fifth branch pipe.

[0008] Preferably, a convex portion is provided at the bottom of the housing, an end cover is detachably provided at the top of the housing, an inner groove corresponding to the convex portion is provided at the top of the end cover, and a slot corresponding to the convex portion is provided on the mounting plate.

[0009] Preferably, the adsorption material is zeolite molecular sieve.

[0010] Preferably, a rubber magnet A is provided on the lower surface of the convex portion, rubber magnets B are provided on the upper surfaces of the slot and the inner groove, and the rubber magnet A and the rubber magnet B are magnetically connected.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] By connecting different numbers of adsorption tanks and freely combining them, the present utility model can form different adsorption capacities, has good adaptability, and reduces the costs of storing and maintaining adsorption tanks of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall connection structure of the present utility model;

[0014] Figure 2 is a schematic diagram of the adsorption assembly structure of the present utility model;

[0015] Figure 3 is a top view of the adsorption assembly of the present utility model;

[0016] Figure 4 is a top view of the mounting plate of the present utility model;

[0017] Figure 5 is a side view of the adsorption tank of the present utility model;

[0018] Figure 6 is a cross-sectional view of the adsorption tank of the present utility model.

[0019] In the figure: 1, air filter; 2, booster blower; 3, first branch pipe; 4, second branch pipe; 5, mounting plate; 6, bracket; 7, third branch pipe; 8, adsorption tank; 9, fourth branch pipe; 10, fifth branch pipe; 11, first buffer tank; 12, booster pump; 13, second buffer tank; 14, sixth branch pipe; 15, vacuum pump; 16, valve; 8-1, housing; 8-2, partition; 8-3, vent A; 8-4, vent B; 8-5, convex portion; 8-6, end cover; 8-7, inner groove; 8-8, slot; 8-9, rubber magnet A; 8-10, rubber magnet B. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Embodiment

[0023] As Figure 1-6 shown, in this embodiment, a VPSA pressure swing adsorption oxygen generator includes

[0024] an air filter 1;

[0025] a booster blower 2, whose intake end is connected to the outlet end of the air filter 1, and a branch pipe 1 3 and a branch pipe 2 4 are provided at the outlet end of the booster blower 2;

[0026] Adsorption assembly, including a mounting plate 5. The mounting plate 5 is of a circular structure, and a bracket 6 is provided at the bottom. In this embodiment, two layers of adsorption tanks 8 are provided on the mounting plate 5, and each layer of adsorption tanks 8 is connected in series to form an adsorption unit. In this embodiment, the adsorption tank 8 includes a housing 8-1. The housing 8-1 is of an arc structure. A partition 8-2 is provided inside the housing 8-1, dividing the housing 8-1 into a first cavity and a second cavity. Corresponding to the first cavity and the second cavity, an air vent A 8-3 and an air vent B 8-4 are respectively provided on the outer side of the housing 8-1. The first cavity and the second cavity are connected, and the first cavity and the second cavity are filled with an adsorption material. The air vent A 8-3 on the first adsorption tank 8 in each adsorption unit is connected to a third branch pipe 7 and a fourth branch pipe 9. The first branch pipe 3 and the second branch pipe 4 are respectively connected to the two third branch pipes 7. The air vent B 8-4 on the last adsorption tank 8 connected in series in each adsorption unit is connected to a fifth branch pipe 10;

[0027] The first buffer tank 11, whose inlet ends are respectively connected to the two fifth branch pipes 10;

[0028] The booster pump 12, whose inlet end is connected to the outlet end of the first buffer tank 11;

[0029] The second buffer tank 13, whose inlet end is connected to the outlet end of the booster pump 12. The outlet end of the second buffer tank 13 is connected to a sixth branch pipe 14;

[0030] The vacuum pump 15, whose inlet ends are respectively connected to the two fourth branch pipes 9.

[0031] In this embodiment, valves 16 are provided on the first branch pipe 3, the second branch pipe 4, the fourth branch pipe 9, the fifth branch pipe 10 and the sixth branch pipe 14.

[0032] In this embodiment, a convex portion 8-5 is provided at the bottom of the housing 8-1. A end cover 8-6 is detachably provided at the top of the housing 8-1. An inner groove 8-7 corresponding to the convex portion 8-5 is provided at the top of the end cover 8-6. A slot 8-8 corresponding to the convex portion 8-5 is provided on the mounting plate 5.

[0033] In this embodiment, the adsorption material is zeolite molecular sieve.

[0034] In this embodiment, a rubber magnet A 8-9 is provided on the lower surface of the convex portion 8-5. Rubber magnets B 8-10 are provided on the upper surfaces of the slot 8-8 and the inner groove 8-7. The rubber magnet A 8-9 and the rubber magnet B 8-10 are magnetically connected.

[0035] In this embodiment, several adsorption tanks 8 in the lowermost layer are magnetically connected to the mounting plate 5, and the adsorption tanks 8 in the upper layer are magnetically connected to the adsorption tanks 8 in the lower layer below it.

[0036] The working principle and beneficial effects of the above technical solution are:

[0037] In use, first open the valves 16 on the first branch pipe 3 and the corresponding fifth branch pipe 10. The booster blower 2 pumps the air purified by the air filter 1 into one of the adsorption units. Since the adsorption properties of nitrogen and oxygen in the air on the zeolite molecular sieve are different, oxygen can pass through while nitrogen is adsorbed. The oxygen enters the first buffer tank 11 through the fifth pipeline and is then pumped into the second buffer tank 13 by the booster pump for storage. When in need of use, open the valve 16 on the sixth pipeline for output. When the molecular sieve is saturated with adsorbed nitrogen, close the valves 16 on the first branch pipe 3 and the corresponding fifth branch pipe 10, open the valves 16 on the second branch pipe 4 and the corresponding fifth branch pipe 10, and use another adsorption unit to continue working. Then open the valve 16 on the fourth branch pipe 9 of the previous adsorption unit. Due to the action of the vacuum pump 15, the pressure in the adsorption unit drops, and nitrogen is released and pumped out into other storage devices or directly discharged.

[0038] Compared with the prior art, the utility model can form different adsorption capacities through free combination by connecting different numbers of adsorption tanks 8, has good adaptability, and reduces the costs of storing and maintaining adsorption tanks 8 of different specifications.

[0039] The above is only the preferred specific embodiment of the utility model; however, the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its improved concept, makes equivalent replacements or changes, and all should be covered by the protection scope of the utility model.

Claims

1. A VPSA pressure swing adsorption oxygen generator, characterized in that: include, Air filter (1); A booster blower (2), the air inlet end of which is connected to the air outlet end of the air filter (1), and the air outlet end of the booster blower (2) is provided with a first branch pipe (3) and a second branch pipe (4); An adsorption assembly comprises a mounting plate (5), a bracket (6) being arranged at the bottom of the mounting plate (5), two adsorption units being arranged on the mounting plate (5), the adsorption units comprising a plurality of adsorption tanks (8) connected in series in sequence, the adsorption tanks (8) comprising a shell (8-1), a partition (8-2) being arranged in the shell (8-1), the shell (8-1) being divided into a cavity one and a cavity two, a vent A (8-3) and a vent B (8-4) being arranged on the outward side of the shell (8-1) corresponding to the cavity one and the cavity two, respectively, the cavity one and the cavity two are connected, the cavity one and the cavity two are filled with adsorption material, one of the vents A (8-3) in each adsorption unit is connected to a branch pipe three (7) and a branch pipe four (9), the branch pipe one (3) and the branch pipe two (4) are respectively connected to two branch pipes three (7), and the vent B (8-4) on the last adsorption tank (8) connected in series in each adsorption unit is connected to a branch pipe five (10); A first buffer tank (11), the air inlet end of which is respectively connected to two branch pipes 5 (10); A booster pump (12), the air inlet end of which is connected to the air outlet end of the first buffer tank (11); A second buffer tank (13), the air inlet end of which is connected to the air outlet end of the booster pump (12), and the air outlet end of the second buffer tank (13) is connected to a branch pipe six (14); The vacuum pump (15) has its air inlet end connected to the two branch pipes (9) respectively.

2. A VPSA pressure swing adsorption oxygen generator according to claim 1, characterized in that: Valves (16) are provided on the branch pipe 1 (3), branch pipe 2 (4), branch pipe 3 (7), branch pipe 4 (9) and branch pipe 5 (10).

3. A VPSA pressure swing adsorption oxygen generator according to claim 1, characterized in that: The bottom of the shell (8-1) is provided with a raised portion (8-5), the top of the shell (8-1) is detachably provided with an end cover (8-6), the top of the end cover (8-6) is provided with an inner groove (8-7) corresponding to the raised portion (8-5), and the mounting plate (5) is provided with a slot (8-8) corresponding to the raised portion (8-5).

4. A VPSA pressure swing adsorption oxygen generator according to claim 1, characterized in that: The adsorption material is zeolite molecular sieve.

5. A VPSA pressure swing adsorption oxygen generator according to claim 3, characterized in that: A rubber magnet A (8-9) is provided on the lower surface of the raised portion (8-5), and a rubber magnet B (8-10) is provided on the upper surfaces of the slot (8-8) and the inner groove (8-7); the rubber magnet A (8-9) and the rubber magnet B (8-10) are magnetically connected.

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