Pressure swing adsorption oxygen production adsorption tower

Abstract

This utility model discloses a pressure swing adsorption (PSA) oxygen generation adsorption tower, relating to the technical field of gas separation equipment, including a tower body structure, a base structure, a pressure swing structure, and a transmission structure. The tower body structure sequentially comprises an inlet chamber, a first molecular sieve layer, an intermediate chamber, a second molecular sieve layer, and an outlet chamber. The base structure converts rotational motion into linear reciprocating motion via a drive motor, a geared disc, a transmission wheel, and an eccentric rod. The pressure swing structure includes a first air bladder and a second air bladder connecting the inlet chamber and the intermediate chamber, with spring-loaded pressure plates connected to their bottoms. The transmission structure drives a first cam and a second cam with a 90° phase difference via a rack and pinion to alternately compress the air bladders. During operation, the compression of the first air bladder increases the air pressure in the inlet chamber, while the expansion of the second air bladder reduces the air pressure in the intermediate chamber, creating a pressure difference that accelerates gas transport; conversely, it enhances the inlet efficiency. This design integrates a self-generating gas pressure mechanism, eliminating the need for an external gas source system, and offers advantages such as compact structure, low energy consumption, and high gas transmission efficiency.

Description

Technical Field

[0001] This utility model relates to the field of gas separation equipment technology, and more specifically, to a pressure swing adsorption oxygen generation adsorption tower. Background Technology

[0002] Pressure swing adsorption (PSA) oxygen generation technology utilizes the highly selective adsorption properties of molecular sieve materials for nitrogen, achieving oxygen enrichment through periodic pressure changes. Traditional PSA units typically rely on external gas source switching valve systems to alter the pressure within the adsorption tower, resulting in complex structures, high energy consumption, and switching delays. Such systems require independent vacuum pumps or compressors to power the pressure changes, leading to bulky equipment and high maintenance costs.

[0003] In existing technologies, the pressure switching mechanism and the adsorption tower are mostly designed separately, resulting in long gas transmission paths and large pressure drop losses, which restricts oxygen production efficiency. Especially in small-scale oxygen production equipment, the external gas source system occupies a lot of space, and the valves are prone to failure due to frequent opening and closing. In addition, traditional dual-tower PSA requires two towers to alternate adsorption / desorption, which requires high synchronization control and high structural redundancy. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes a pressure swing adsorption oxygen generation adsorption tower to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] A pressure swing adsorption (PSA) oxygen generation adsorption tower includes a tower body structure, a base structure at the bottom of the tower body structure, a pressure swing structure connected to the base structure, and a transmission structure matched with the pressure swing structure. The gas chamber circulation function is realized inside the tower body structure through the cooperation of the pressure swing structure, the transmission structure, and the base structure.

[0007] Furthermore, the tower structure includes a main tower body, an air inlet chamber, a first molecular sieve layer, an intermediate chamber, a second molecular sieve layer, and an air outlet chamber. The air inlet chamber is located inside the main tower body, the first molecular sieve layer is located inside the air inlet chamber, the intermediate chamber is located inside the first molecular sieve layer, the second molecular sieve layer is located inside the intermediate chamber, and the air outlet chamber is located inside the second molecular sieve layer. The air outlet chamber is connected to an air inlet and an air outlet.

[0008] Furthermore, the base structure includes a base plate, a support rod, a drive motor, a gear disc, a transmission gear, a transmission wheel, and an eccentric rod. The support rod is fixed on the base plate, and the drive motor is fixedly connected to the center of the top of the base plate. The drive end of the drive motor is connected to the gear disc, which meshes with the transmission gear. The transmission gear is fixedly connected to the transmission wheel, and the eccentric rod is connected to the eccentric position at the bottom of the transmission wheel. The top of the support rod is fixedly connected to the periphery of the main tower body.

[0009] Furthermore, the transformer structure includes a first airbag, a second airbag, a first pressure plate, and a second pressure plate. The first airbag is connected to the bottom end of the air intake chamber, the second airbag is connected to the bottom end of the intermediate chamber, the first pressure plate is fixedly connected to the bottom end of the first airbag, and the second pressure plate is fixedly connected to the bottom end of the second airbag. Both the first pressure plate and the second pressure plate are connected to compression spring rods.

[0010] Furthermore, the transmission structure includes a rack, a transmission groove, a first cam, and a second cam. One end of the rack is fixedly connected to the transmission groove, which is slidably connected to the eccentric rod. The rack is matched with the first cam and the second cam, both of which are equipped with gears. The rack meshes with the gears, and the rack is slidably connected to a limit sleeve, which is fixedly connected to the base plate.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. By alternating the compression of the airbags by the cam, the air pressure in the intake chamber and the intermediate chamber is directly changed. The pressure difference is used to drive the gas flow efficiently, eliminating the need for an external vacuum pump compressor and reducing energy consumption.

[0013] 2. The integrated transmission system enables air pressure switching, avoiding the high failure rate of traditional valve systems; four evenly distributed transmission structures ensure balanced pressure transmission.

[0014] 3. The alternating action of the two airbags creates a continuous pressure difference, which forces the gas to penetrate the molecular sieve layer, thereby increasing the nitrogen adsorption rate. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of a pressure swing adsorption oxygen generation adsorption tower according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the base structure of a pressure swing adsorption oxygen generation adsorption tower according to an embodiment of the present utility model;

[0018] Figure 3 This is a bottom view of the main tower body of a pressure swing adsorption oxygen generation adsorption tower according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the pressure swing structure of a pressure swing adsorption oxygen generation adsorption tower according to an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the transmission structure of a pressure swing adsorption oxygen generation adsorption tower according to an embodiment of the present utility model.

[0021] In the picture:

[0022] 1. Tower structure; 101. Main tower body; 102. Air inlet chamber; 103. First molecular sieve layer; 104. Intermediate chamber; 105. Second molecular sieve layer; 106. Air outlet chamber; 2. Base structure; 201. Base plate; 202. Support rod; 203. Drive motor; 204. Gear disc; 205. Transmission gear; 206. Transmission wheel; 207. Eccentric rod; 3. Transformer structure; 301. First airbag; 302. Second airbag; 303. First pressure plate; 304. Second pressure plate; 4. Transmission structure; 401. Rack; 402. Transmission groove; 403. First cam; 404. Second cam. Detailed Implementation

[0023] 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.

[0024] like Figure 1-5 As shown, the pressure swing adsorption oxygen generation adsorption tower according to an embodiment of the present invention includes a tower body structure 1, a base structure 2 at the bottom of the tower body structure 1, a pressure swing structure 3 connected to the base structure 2, and a transmission structure 4 matched to the pressure swing structure 3. The gas chamber circulation function is realized inside the tower body structure 1 through the cooperation of the pressure swing structure 3, the transmission structure 4 and the base structure 2.

[0025] Continue to refer to Figures 1-5 The adsorption tower includes a tower body structure 1, a base structure 2, a pressure-changing structure 3, and a transmission structure 4. The working process is as follows: the gas to be treated, such as air, enters the inlet chamber 102 through the inlet. After nitrogen is adsorbed in the molecular sieve layer, oxygen is output from the outlet chamber 106. The drive motor 203 of the base structure 2 provides power, driving the pressure-changing structure 3 through the transmission system. This causes the first airbag 301 and the second airbag 302 to alternately compress and expand, changing the pressure difference between the inlet chamber 102 and the intermediate chamber 104, thus improving gas delivery efficiency. When the first airbag 301 is compressed, the pressure in the inlet chamber 102 increases, promoting gas flow to the intermediate chamber 104. When the second airbag 302 is compressed, the pressure in the inlet chamber 102 decreases, enhancing the intake efficiency. Both the outlet of the outlet chamber 106 and the inlet of the inlet chamber 102 are equipped with on / off valves to control the gas flow and achieve cyclic adsorption.

[0026] For details, please refer to... Figures 1-5 The tower structure 1 includes a main tower body 101, an air inlet chamber 102, a first molecular sieve layer 103, an intermediate chamber 104, a second molecular sieve layer 105, and an air outlet chamber 106. The air inlet chamber 102 is located inside the main tower body 101. The first molecular sieve layer 103 is located inside the air inlet chamber 102. The intermediate chamber 104 is located inside the first molecular sieve layer 103. The second molecular sieve layer 105 is located inside the intermediate chamber 104. The air outlet chamber 106 is located inside the second molecular sieve layer 105. The air outlet chamber 106 is connected to an air inlet and an air outlet.

[0027] The tower structure 1 constitutes the main frame of the adsorption tower, including the main tower body 101, the inlet chamber 102, the first molecular sieve layer 103, the intermediate chamber 104, the second molecular sieve layer 105, and the outlet chamber 106. The main tower body 101 serves as a sealed outer shell supporting the internal components. The inlet chamber 102 is located inside the main tower body 101 and introduces the gas to be treated through the inlet port. Its pressure change is regulated by the pressure-changing structure 3. The first molecular sieve layer 103 is adjacent to the inlet chamber 102 and is composed of adsorption materials such as zeolite. It is used to adsorb nitrogen molecules and allow oxygen to pass through. The intermediate chamber 104 is located between the two molecular sieve layers and serves as a gas transition zone. When its pressure decreases, it promotes the inflow of gas into the inlet chamber 102. The second molecular sieve layer 105 performs secondary adsorption on the gas to improve the oxygen purity. The outlet chamber 106 is connected to the outlet port, collects and outputs high-purity oxygen, and both the inlet and outlet are equipped with on / off valves to control the gas flow.

[0028] For details, please refer to... Figures 1-5 The base structure 2 includes a base plate 201, a support rod 202, a drive motor 203, a gear 204, a transmission gear 205, a transmission wheel 206, and an eccentric rod 207. The support rod 202 is fixed on the base plate 201. The drive motor 203 is fixedly connected to the center of the top of the base plate 201. The drive end of the drive motor 203 is connected to the gear 204. The gear 204 meshes with the transmission gear 205. The transmission gear 205 is fixedly connected to the transmission wheel 206. The eccentric rod 207 is connected to the eccentric position at the bottom of the transmission wheel 206. The top of the support rod 202 is fixedly connected to the periphery of the main tower body 101.

[0029] The base structure 2 provides equipment support and power transmission functions. The base plate 201 is the basic fixing component of the overall structure. The support rod 202 is vertically fixed to the base plate 201 and connected to the periphery of the main tower body 101 to ensure the stability of the tower body. The drive motor 203 is installed at the center of the base plate 201 and outputs rotational power. The gear plate 204 is directly connected to the motor drive end. The transmission gear 205 meshes with the gear plate 204 to transmit torque. The transmission wheel 206 is fixed on the transmission gear 205, and its bottom eccentric position is hinged to the eccentric rod 207, which converts the rotational motion into reciprocating linear displacement, thereby driving the transmission structure 4 to move.

[0030] For details, please refer to... Figures 1-5 The transformer structure 3 includes a first airbag 301, a second airbag 302, a first pressure plate 303, and a second pressure plate 304. The first airbag 301 is connected to the bottom end of the air intake chamber 102, and the second airbag 302 is connected to the bottom end of the intermediate chamber 104. The first pressure plate 303 is fixedly connected to the bottom end of the first airbag 301, and the second pressure plate 304 is fixedly connected to the bottom end of the second airbag 302. Both the first pressure plate 303 and the second pressure plate 304 are connected to compression spring sleeves.

[0031] The pressure-changing structure 3 optimizes gas delivery efficiency through pressure changes. The first airbag 301 is connected to the bottom of the air inlet chamber 102. When compressed, it increases the air pressure in the air inlet chamber 102 and decreases the air pressure when expanded to enhance air intake efficiency. The second airbag 302 is connected to the bottom of the intermediate chamber 104. When compressed, it increases the air pressure in the intermediate chamber 104 and decreases the air pressure when expanded to promote gas flow from the air inlet chamber 102. The first pressure plate 303 and the second pressure plate 304 are respectively fixed to the bottom of the two airbags and directly bear the cam pressure to compress the airbags. The compression spring sleeve is connected to the pressure plate and provides a restoring elastic force to inflate the airbags when the cam is not pressurized.

[0032] For details, please refer to... Figures 1-5 The transmission structure 4 includes a rack 401, a transmission groove 402, a first cam 403, and a second cam 404. One end of the rack 401 is fixedly connected to the transmission groove 402, and the transmission groove 402 is slidably connected to the eccentric rod 207. The rack 401 is matched with the first cam 403 and the second cam 404. Both the first cam 403 and the second cam 404 are equipped with gears, and the rack 401 meshes with the gears. The rack 401 is slidably connected to a limit sleeve, and the limit sleeve is fixedly connected to the base plate 201. The transmission structure 4 has four sets, which are evenly distributed at the bottom ends of the first airbag 301 and the second airbag 302.

[0033] The transmission structure 4 converts the reciprocating motion of the base structure 2 into cam action. One end of the rack 401 is fixed to the transmission groove 402, which is slidably connected to the eccentric rod 207, converting the eccentric motion into the linear reciprocating motion of the rack 401. The first cam 403 and the second cam 404 are equipped with gears that mesh with the rack 401 and are driven to rotate by the rack 401. The two cams are installed with a 90° phase difference, ensuring that when the first cam 403 compresses the first airbag 301, the second cam 404 is in an inactive state, and vice versa. The limiting sleeve is fixed on the base plate 201 to constrain the movement trajectory of the rack 401. The four sets of transmission structures 4 are evenly distributed at the bottom of the airbag to achieve balanced pressure transmission.

[0034] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0035] In use, the gas to be treated is introduced into the air inlet 102 of the tower structure 1 through the air inlet. Then, the drive motor 203 of the base structure 2 drives the gear disk 204 to rotate the transmission gear 205. The transmission gear 205 drives the transmission slide 402 connected to the rack 401 to perform linear reciprocating transmission through the eccentric rod 207 on the transmission wheel 206. This causes the rack 401 to reciprocate through the gear to the first cam 403 and the second cam 404. The installation angles of the first cam 403 and the second cam 404 differ by 90°. When the first cam 403 drives the first airbag 301 to compress, the second cam 404 is in a non-interacting state with the second airbag 302. Under the influence of the applied force, the second airbag 302 will revert to its original position and expand under the action of the second pressure plate 304 and the compression spring sleeve, thereby reducing the air pressure in the intermediate chamber 104. Meanwhile, the first airbag 301 will be compressed, increasing the air pressure in its intake chamber 102, which in turn increases the pressure difference between the intermediate chamber 104 and the intake chamber 102. This facilitates improving the air delivery efficiency from the intake chamber 102 to the intermediate chamber 104. Conversely, when the second cam 404 compresses the second airbag 302, it will reduce the air pressure in its intake chamber 102, thereby improving the intake efficiency of the intake chamber 102. Both the air inlet of the intake chamber 102 and the air outlet of the outlet chamber 106 are equipped with on / off valves for on / off control.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure swing adsorption oxygen production adsorption column, characterized by, It includes a tower structure (1), a base structure (2) at the bottom of the tower structure (1), a transformer structure (3) connected to the base structure (2), a transmission structure (4) matched with the transformer structure (3), and the tower structure (1) realizes the circulating function of the gas chamber through the cooperation of the transformer structure (3), the transmission structure (4) and the base structure (2).

2. A pressure swing adsorption oxygen production adsorption column according to claim 1, characterized in that, The tower structure (1) includes a main tower body (101), an air inlet chamber (102), a first molecular sieve layer (103), an intermediate chamber (104), a second molecular sieve layer (105), and an air outlet chamber (106). The air inlet chamber (102) is located inside the main tower body (101), the first molecular sieve layer (103) is located inside the air inlet chamber (102), and the intermediate chamber (104) is located inside the first molecular sieve layer (103).

3. A pressure swing adsorption oxygen generating adsorption column according to claim 2, wherein, The inner side of the intermediate chamber (104) is provided with a second molecular sieve layer (105), and the inner side of the second molecular sieve layer (105) is provided with an air outlet chamber (106). The air outlet chamber (106) is connected to an air inlet and an air outlet.

4. A pressure swing adsorption oxygen generating adsorption column according to claim 3, wherein, The base structure (2) includes a base plate (201), a support rod (202), a drive motor (203), a gear plate (204), a transmission gear (205), a transmission wheel (206), and an eccentric rod (207). The support rod (202) is fixed on the base plate (201), and the drive motor (203) is fixedly connected to the top center of the base plate (201). The drive end of the drive motor (203) is connected to the gear plate (204).

5. A pressure swing adsorption oxygen generating adsorption column according to claim 4, wherein, The gear plate (204) is meshed with a transmission gear (205), the transmission gear (205) is fixedly connected to a transmission wheel (206), the bottom end of the transmission wheel (206) is eccentrically connected to an eccentric rod (207), and the top end of the support rod (202) is fixedly connected to the periphery of the main tower body (101).

6. The pressure swing adsorption oxygen generation adsorption tower according to claim 5, characterized in that, The transformer structure (3) includes a first airbag (301), a second airbag (302), a first pressure plate (303), and a second pressure plate (304). The first airbag (301) is connected to the bottom of the air intake chamber (102), and the second airbag (302) is connected to the bottom of the intermediate chamber (104).

7. A pressure swing adsorption oxygen production adsorption column according to claim 6, wherein, The first pressure plate (303) is fixedly connected to the bottom end of the first airbag (301), and the second pressure plate (304) is fixedly connected to the bottom end of the second airbag (302). Both the first pressure plate (303) and the second pressure plate (304) are connected to compression spring sleeves.

8. A pressure swing adsorption oxygen generating adsorption column according to claim 7, characterized in that, The transmission structure (4) includes a rack (401), a transmission groove (402), a first cam (403), and a second cam (404). One end of the rack (401) is fixedly connected to the transmission groove (402), and the transmission groove (402) is slidably connected to the eccentric rod (207).

9. A pressure swing adsorption oxygen production adsorption column according to claim 8, wherein, The rack (401) is matched with a first cam (403) and a second cam (404). Both the first cam (403) and the second cam (404) are equipped with gears. The rack (401) meshes with the gears. The rack (401) is slidably connected to a limit sleeve. The limit sleeve is fixedly connected to the base plate (201).

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