Six-tower oxygen generator

Abstract

The utility model discloses a six-tower oxygen generator, which comprises a base, the upper end of the base is connected with two adsorption tower groups, the two adsorption tower groups are respectively an adsorption tower group A and an adsorption tower group B, and each of the adsorption tower group A and the adsorption tower group B comprises three closely arranged adsorption towers. The volume of each branch adsorption tower is reduced by 1 / 3, the diameter and the height of the adsorption tower are also reduced, and the overall volume of the oxygen production main machine is also reduced; each branch adsorption tower adopts an independent valve group, a desorption exhaust port at the lower end of each branch adsorption tower adopts an independent silencer, and the number of the silencers is increased to six, so that the noise of a main machine is reduced, the caliber specification of the valve group is also reduced, and the later maintenance cost is reduced; meanwhile, the upper end and the lower end of each adsorption tower are provided with a total gas inlet pipeline and a total gas production pipeline, so that the gas quantity among the adsorption towers can be balanced, the gas inlet quantity of each adsorption tower can be better controlled, the molecular sieve of the oxygen production main machine is effectively protected, and the gas production purity and efficiency of the oxygen production main machine are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen concentrators, and in particular to a six-tower oxygen concentrator. Background Art

[0002] Existing traditional PSA oxygen concentrators utilize a dual-tower structure. As oxygen production increases, the required adsorbent increases, and the volume of the adsorption tower also increases. Limited by the required height-to-diameter ratio of the adsorption tower, the diameter and height of the adsorption tower also increase, increasing the overall size of the oxygen concentrator. This places more stringent requirements on the machine room, increases transportation difficulties, and is inconvenient for use in some machine rooms with limited space. Furthermore, when the oxygen concentrator adopts a dual-tower structure, the valves and pipes used in the valve group are larger in diameter, which increases the gas scouring of the molecular sieve of the oxygen concentrator, shortening its service life. The larger valve group also increases subsequent maintenance costs. Furthermore, traditional dual-tower oxygen concentrators use a single desorption silencer for silencing during desorption. This silencer is large, expensive, and provides only moderate silencing effect. Utility Model Content

[0003] In view of the above technical problems in the related art, the utility model provides a six-tower oxygen generator that can solve the above problems.

[0004] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0005] A six-tower oxygen generator comprises a base, the upper end of which is connected to two adsorption tower groups, the two adsorption tower groups being adsorption tower group A and adsorption tower group B, the adsorption tower group A and the adsorption tower group B each comprising three closely arranged adsorption towers, the bottom of each adsorption tower being provided with an air inlet connector, the top of each adsorption tower being provided with a gas production connector, each of the air inlet connectors being connected to an air inlet main pipe via an air inlet branch pipe, each of the air inlet branch pipes being connected to an air inlet pneumatic valve, a desorption pipeline being connected to the pipeline between the air inlet pneumatic valve and the air inlet connector, and the desorption pipeline A desorption pneumatic valve is connected to it, and each of the desorption pneumatic valves is equipped with a muffler. Each of the gas production joints is connected to the gas production main pipe through a gas production branch pipe. A gas production volume control valve and a gas production one-way valve are connected in series on each of the gas production branch pipes. A pressure-equalizing pipeline is connected between the gas production joints of the two adjacent adsorption towers in the adsorption tower group A and the adsorption tower group B, and a pressure-equalizing pneumatic valve and a pressure-equalizing volume control valve are connected in series on the pressure-equalizing pipeline. A backflush pipeline is also connected between the gas production joints of the two adjacent adsorption towers in the adsorption tower group A and the adsorption tower group B, and a backflush valve is connected on the backflush pipeline.

[0006] Furthermore, a control box is connected to the right side of the upper end of the base, and a pressure gauge is provided on the upper end of the control box. The pressure gauge is connected to the adsorption tower through a pipeline.

[0007] Furthermore, the adsorption tower is filled with zeolite molecular sieve, and the outer wall of the adsorption tower is provided with a hanging lug.

[0008] Furthermore, the intake manifold is a U-shaped structure, the middle portion of the intake manifold is connected to an external pipe, and the external pipe is connected to an intake main control valve.

[0009] Furthermore, the gas production main pipe is a U-shaped structure, a gas transmission pipe is connected to the middle of the gas production main pipe, and a gas production main control valve is connected to the gas transmission pipe.

[0010] The beneficial effects of the present invention are as follows: the present application is a six-tower oxygen concentrator, which is structured as two groups of three-tower parallel oxygen concentrators. Compared with the traditional two-tower oxygen concentrator, the volume of each sub-adsorption tower is reduced by 1 / 3, the diameter and height of the adsorption tower are also reduced accordingly, and the overall volume of the oxygen concentrator is also reduced accordingly; each sub-adsorption tower adopts an independent valve group, and the desorption exhaust port at the lower end of each sub-adsorption tower adopts an independent muffler. The number of mufflers is increased to six, which reduces the noise of the main unit, and the caliber specification of the valve group is also reduced accordingly, reducing the subsequent maintenance cost; at the same time, the upper and lower ends of the adsorption tower are provided with total air intake and gas production pipelines, which can balance the gas volume between the adsorption towers, better control the air intake volume of each adsorption tower, effectively protect the molecular sieve of the oxygen concentrator, and improve the gas production purity and efficiency of the oxygen concentrator. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] The utility model is described in further detail below with reference to the accompanying drawings.

[0013] Figure 1 This is a right side view of a six-tower oxygen concentrator according to an embodiment of the present utility model;

[0014] Figure 2 This is a front view of a six-tower oxygen concentrator according to an embodiment of the present utility model;

[0015] Figure 3 This is a left side view of a six-tower oxygen concentrator according to an embodiment of the present utility model;

[0016] Figure 4 It is a top view of a six-tower oxygen concentrator described in an embodiment of the present utility model.

[0017] In the picture:

[0018] 1. Base; 2. Adsorption tower; 2-1. Air inlet connector; 2-2. Gas production connector; 3. Air inlet main pipe; 4. Air inlet branch pipe; 5. Air inlet pneumatic valve; 6. Desorption pneumatic valve; 7. Muffler; 8. Gas production branch pipe; 9. Gas production main pipe; 10. Gas production volume control valve; 11. Pressure equalizing pneumatic valve; 12. Pressure equalizing volume control valve; 13. Backflush valve; 14. Control box; 15. Pressure gauge; 16. External pipe; 17. Air inlet main control valve; 18. Gas transmission pipe; 19. Gas production main control valve; 20. Gas production check valve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0020] like Figure 1-4 As shown, according to the utility model, a six-tower oxygen generator is disclosed, including a base 1, the upper end of the base 1 is connected to two adsorption tower groups, the two adsorption tower groups are respectively adsorption tower group A and adsorption tower group B, the adsorption tower group A and the adsorption tower group B each include three closely arranged adsorption towers 2, the bottom of each of the adsorption towers 2 is provided with an air intake connector 2-1, the top of each of the adsorption towers 2 is provided with a gas production connector 2-2, each of the air intake connectors 2-1 is connected to the air intake main pipe 3 through an air intake branch pipe 4, each of the air intake branch pipes 4 is connected to an air intake pneumatic valve 5, and a desorption pipeline is connected to the pipeline between the air intake pneumatic valve 5 and the air intake connector 2-1. A desorption pneumatic valve 6 is connected to the desorption pipeline, and each of the desorption pneumatic valves 6 is equipped with a muffler 7. Each of the gas production joints 2-2 is connected to the gas production main 9 through a gas production branch pipe 8. Each of the gas production branch pipes 8 is connected in series with a gas production volume control valve 10 and a gas production one-way valve 20. A pressure-equalizing pipeline is connected between the gas production joints 2-2 of the two adjacent adsorption towers 2 in the adsorption tower group A and the adsorption tower group B. A pressure-equalizing pneumatic valve 11 and a pressure-equalizing volume control valve 12 are connected in series on the pressure-equalizing pipeline. A backflush pipeline is also connected between the gas production joints 2-2 of the two adjacent adsorption towers 2 in the adsorption tower group A and the adsorption tower group B, and a backflush valve 13 is connected on the backflush pipeline.

[0021] Example 1:

[0022] like Figure 4As shown, the oxygen concentrator of the present application includes six adsorption towers 2, which are divided into two groups, namely adsorption tower group A and adsorption tower group B. Each group has three adsorption towers 2 and are closely arranged, and the two groups of adsorption towers are closely arranged in two rows. Compared with the traditional double-tower oxygen concentrator, the volume of each adsorption tower is reduced by 1 / 3, and the diameter and height of the adsorption tower are also reduced accordingly, so the overall volume of the oxygen concentrator is also reduced accordingly.

[0023] like Figure 1 、 2 4, the air inlet connector 2-1 of each adsorption tower 2 is connected to an air inlet branch pipe 4, each air inlet branch pipe 4 is connected to an air inlet pneumatic valve 5, and each air inlet branch pipe 4 is also connected to a desorption pipeline, each desorption pipeline is connected to a desorption pneumatic valve 6, and each desorption pneumatic valve 6 is equipped with a muffler 7, so the number of mufflers 7 is increased to six, which can effectively reduce the noise of the main engine, and the gas production connector 2-2 of each adsorption tower 2 is connected to a gas production branch pipe 8, and each gas production branch pipe 8 is serially connected to a gas production volume control valve 10 and a gas production one-way valve 20. Since each adsorption tower 2 adopts an independent valve group, the caliber specification of the valve group is also reduced, thereby reducing the subsequent maintenance cost. In addition, the air intake branch pipe 4 is connected to the air intake main pipe 3 (the total air intake volume is controlled by the air intake main control valve 17), and the gas production branch pipe 8 is connected to the gas production main pipe 9 (the total gas production output is controlled by the gas production main control valve 19). By controlling the input and output of the gas volume through the main control valve, the molecular sieve of the oxygen generator can be effectively protected, thereby improving the gas production purity and efficiency of the oxygen generator.

[0024] A control box 14 for controlling the switch valve is connected to the right side of the upper end of the application base 1. A pressure gauge 15 is provided on the upper end of the control box 14. The pressure changes of each adsorption tower 2 can be observed intuitively through the pressure gauge 15.

[0025] When the oxygen concentrator of this application is used by the main body, it includes the following working processes:

[0026] Adsorption of adsorption tower group A: the main air intake control valve 17 is opened, the air intake pneumatic valve 5 of adsorption tower group A and the desorption pneumatic valve 6 of adsorption tower group B are opened, and other pneumatic valves are closed. The compressed air enters the adsorption tower group A through the main air intake control valve 17, and after being evenly distributed through the air intake branch pipe 4, it enters each sub-adsorption tower through the air intake pneumatic valve 5 of adsorption tower group A. The pressure of adsorption tower group A increases, and the nitrogen molecules in the compressed air are adsorbed by the zeolite molecular sieve. The unabsorbed oxygen passes through the adsorption tower. The oxygen produced by each sub-tower in the adsorption tower group A passes through the gas production one-way valve 20 and the gas production volume control valve 10 connected to each sub-tower in the adsorption tower group A, and then passes through the main gas production control valve 19 to enter the subsequent oxygen storage tank. The duration is tens of seconds.

[0027] Pressure equalization: After the adsorption process of adsorption tower group A is completed, the pressure equalization pneumatic valve 11 on each sub-tower is opened, and the other pneumatic valves are closed. Adsorption tower group A is connected to adsorption tower group B, so that the pressure of the two tower groups reaches equilibrium, which lasts for several seconds.

[0028] Adsorption tower group B: After the pressure equalization is completed, the main air intake control valve 17 is opened, the air intake pneumatic valve 5 of the adsorption tower group B and the desorption pneumatic valve 6 of the adsorption tower group A are opened, and the other pneumatic valves are closed. The compressed air enters the adsorption tower group B through the main air intake control valve 17, and after being evenly distributed through the air intake branch pipe 4, it enters each sub-adsorption tower through the air intake pneumatic valve 5 of the adsorption tower group B. The pressure of the adsorption tower group B increases, and the nitrogen molecules in the compressed air are adsorbed by the zeolite molecular sieve. The unabsorbed oxygen passes through the adsorption tower. The oxygen produced by each sub-tower in the adsorption tower group B passes through the gas production one-way valve 20 and the gas production volume control valve 10 connected to each sub-tower in the adsorption tower group B, and then passes through the gas production main control valve 19 to enter the subsequent oxygen storage tank, and the duration is tens of seconds.

[0029] Analysis: While adsorption tower group B is adsorbing, the nitrogen adsorbed by the zeolite molecular sieve in adsorption tower group A is released back into the atmosphere through the desorption pneumatic valves 6 of each sub-tower in adsorption tower group A, completing the desorption of adsorption tower group A. Conversely, while adsorption tower group A is adsorbing, adsorption tower group B is also desorbing through the desorption pneumatic valves 6 of each sub-tower in adsorption tower group B.

[0030] Backflush: To completely discharge the nitrogen released by the molecular sieve during decompression into the atmosphere, the oxygen in the adsorption tower group is purged into the desorption tower group through the normally open backflush valve 13, and the nitrogen in the tower is blown out of the adsorption tower. This process is carried out simultaneously with the desorption.

[0031] After the adsorption of adsorption tower group B is completed, it enters the pressure equalization stage and then switches to adsorption tower group A for adsorption. The process flow repeats this cycle.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A six-tower oxygen concentrator, characterized in that: The invention comprises a base (1), wherein the upper end of the base (1) is connected to two adsorption tower groups, wherein the two adsorption tower groups are respectively an adsorption tower group A and an adsorption tower group B, wherein the adsorption tower group A and the adsorption tower group B each comprise three closely arranged adsorption towers (2), wherein the bottom of each adsorption tower (2) is provided with an air inlet joint (2-1), and the top of each adsorption tower (2) is provided with a gas production joint (2-2), wherein each air inlet joint (2-1) is connected to an air inlet main pipe (3) via an air inlet branch pipe (4), wherein each air inlet branch pipe (4) is connected to an air inlet pneumatic valve (5), wherein a desorption pipeline is connected to the pipeline between the air inlet pneumatic valve (5) and the air inlet joint (2-1), and wherein a desorption gas is connected to the desorption pipeline. A pneumatic valve (6) is provided for each desorption pneumatic valve (6), and a muffler (7) is provided for each gas production joint (2-2). Each gas production joint (2-2) is connected to a gas production main pipe (9) via a gas production branch pipe (8). A gas production volume control valve (10) and a gas production check valve (20) are connected in series to each gas production branch pipe (8). A pressure-equalizing pipeline is connected between the gas production joints (2-2) of two adjacent adsorption towers (2) in the adsorption tower group A and the adsorption tower group B. A pressure-equalizing pneumatic valve (11) and a pressure-equalizing volume control valve (12) are connected in series to the pressure-equalizing pipeline. A backflush pipeline is also connected between the gas production joints (2-2) of two adjacent adsorption towers (2) in the adsorption tower group A and the adsorption tower group B. A backflush valve (13) is connected to the backflush pipeline.

2. A six-tower oxygen concentrator according to claim 1, characterized in that, A control box (14) is connected to the right side of the upper end of the base (1), and a pressure gauge (15) is provided at the upper end of the control box (14). The pressure gauge (15) is connected to the adsorption tower (2) through a pipeline.

3. A six-tower oxygen concentrator according to claim 1, characterized in that, The adsorption tower (2) is filled with zeolite molecular sieve, and the outer wall of the adsorption tower (2) is provided with a hanging lug.

4. A six-tower oxygen concentrator according to claim 1, characterized in that: The intake manifold (3) is a U-shaped structure, and an external pipe (16) is connected to the middle of the intake manifold (3), and an intake main control valve (17) is connected to the external pipe (16).

5. A six-tower oxygen concentrator according to claim 1, characterized in that: The gas production main pipe (9) is a U-shaped structure. A gas delivery pipe (18) is connected to the middle of the gas production main pipe (9), and a gas production main control valve (19) is connected to the gas delivery pipe (18).

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