阅读说明：本技术 一种变压吸附氧气设备的工作方法 (Working method of pressure swing adsorption oxygen equipment ) 是由 李勤 徐航东 于 2020-06-30 设计创作，主要内容包括：本发明涉及氧气制备技术领域,具体涉及变压吸附氧气设备的使用方法,包括两个吸附罐和氧气缓冲罐,吸附罐上侧罐口内匹配设有封闭盖,第一导气管上固定连接有解吸导出组件,第一导气管和第二导气管上均固定连接有气动切换阀,吸附罐内竖直设有转杆,圆筒罩上端面固定设有伺服电机,圆筒罩下端开口内设有与转杆传动连接的气流导向组件,圆筒罩内设有与转杆传动连接的辅助解吸组件。本发明可以增加吸附罐的吸附作用,同时便于控制吸附罐内的气体流向,保证吸附以及解吸动作不受到影响,该发明还设置了辅助解吸的组件,增加解吸效果以及效率,本发明设置了氧气缓冲罐用于对氧气压力进行控制,同时还能对氧气温度进行控制。(The invention relates to the technical field of oxygen preparation, in particular to a using method of pressure swing adsorption oxygen equipment, which comprises two adsorption tanks and an oxygen buffer tank, wherein a sealing cover is arranged in a tank opening on the upper side of each adsorption tank in a matching manner, a desorption leading-out component is fixedly connected to a first air duct, pneumatic switching valves are fixedly connected to the first air duct and a second air duct, a rotating rod is vertically arranged in each adsorption tank, a servo motor is fixedly arranged on the upper end face of a cylinder cover, an air flow guide component in transmission connection with the rotating rod is arranged in an opening at the lower end of the cylinder cover, and an auxiliary desorption component in transmission connection with the rotating rod is arranged in. The invention can increase the adsorption effect of the adsorption tank, is convenient to control the gas flow direction in the adsorption tank, ensures that the adsorption and desorption actions are not influenced, is also provided with an auxiliary desorption component to increase the desorption effect and efficiency, and is provided with the oxygen buffer tank for controlling the oxygen pressure and controlling the oxygen temperature.)

1. A working method of pressure swing adsorption oxygen equipment comprises two adsorption tanks (1) and an oxygen buffer tank (28), wherein a closed cover (2) is arranged in a tank opening on the upper side of the adsorption tank (1) in a matching manner, the closed cover (2) is fixed with the adsorption tank (1) in a sealing manner through a flange structure (3), a circular opening is formed in the closed cover (2), a cylinder cover (4) corresponding to the circular opening is fixedly arranged on the upper end face of the closed cover (2), a first air duct (5) is fixedly connected to the lower end of the adsorption tank (1), a second air duct (6) is fixedly connected to the side wall of the cylinder cover (4), a desorption derivation component is fixedly connected to the first air duct (5), pneumatic switching valves are fixedly connected to the first air duct (5) and the second air duct (6), a rotating rod (7) is vertically arranged in the adsorption tank (1), a servo motor (8) is fixedly arranged on the upper end face of the cylinder cover (4), the upper end of the rotating rod (7) penetrates through the cylinder cover (4) and is coaxially and fixedly connected with the output end of the servo motor (8), an airflow guide assembly in transmission connection with the rotating rod (7) is arranged in an opening at the lower end of the cylinder cover (4), a plurality of groups of strip-shaped stirring plates (9) are fixedly arranged on the rotating rod (7) in the adsorption tank (1) in a surrounding manner, an auxiliary desorption assembly in transmission connection with the rotating rod (7) is arranged in the cylinder cover (4), the upper end and the lower end of the oxygen buffer tank (28) are respectively and fixedly connected with an air inlet pipe (29) and an air outlet pipe (30), and the two second air guide pipes (6) are fixedly connected and communicated with the air inlet pipe (29); the desorption leading-out assembly comprises a leading-out pipe (10) fixedly connected and communicated with the first air duct (5), a rotary separating valve (11) is fixedly connected onto the leading-out pipe (10), a cylinder body (12) is fixedly connected to one end, far away from the first air duct (5), of the leading-out pipe (10), and a micro fan (13) is fixedly arranged in the cylinder body (12); the airflow guide assembly comprises a sealing block (17) horizontally arranged in a cylinder cover (4), the outer wall of the sealing block (17) is fixedly connected with the cylinder cover (4) in a sealing manner, the sealing block (17) is rotatably sleeved on a rotating rod (7), two through vents are arranged on the sealing block (17) in a vertical symmetrical manner, one-way valves (18) are fixedly arranged in the through vents, the two one-way valves (18) are oppositely guided, a fan-shaped sealing block (19) is arranged on the upper side of the sealing block (17), a ring block (20) is fixedly connected with the fan-shaped sealing block (19), the ring block (20) is rotatably sleeved on the rotating rod (7), an elastic limiting assembly for limiting the ring block (20) is arranged on the rotating rod (7), a fan-shaped abutting block (21) is fixedly arranged on the upper end face of the sealing block (17), and the elastic limiting assembly comprises an annular groove arranged on the annular inner wall of the ring block (20), a plurality of limiting blocks (22) are fixedly arranged in the annular groove in an encircling manner, a plurality of shifting pieces (23) are arranged in the annular groove in an encircling manner, the shifting pieces (23) are rotatably connected with the rotating rod (7) through rotating shafts (24), a torsion spring (25) is sleeved on the rotating shaft (24), one end of the torsion spring (25) is fixedly connected with the shifting pieces (23), the other end of the torsion spring (25) is fixedly connected with the rotating rod (7), the auxiliary desorption assembly comprises spiral blades (26) vertically arranged in the cylinder cover (4), the spiral blades (26) are fixedly sleeved on the rotating rod (7), a plurality of annular electric heating pipes (27) are horizontally and uniformly fixed on the inner wall of the cylinder cover (4), the annular electric heating pipes (27) correspond to the spiral blades (26) in position, and an electromagnetic valve (31) is fixedly arranged on the air inlet pipe (29), a first flow control valve (32) is fixedly connected on the air outlet pipe (30), a bag body (40) is arranged in the oxygen buffer tank (28), the bag body (40) is filled with water, one side of the oxygen buffer tank (28) is provided with a circulating pipe (33), both ends of the circulating pipe (33) penetrate through the oxygen buffer tank (28) and are fixedly connected with the bag body (40), a water tank (35) is fixedly connected to the circulating pipe (33), a circulating water pump (39) is fixedly connected to the circulating pipe (33), the connecting position of the circulating pipe (33) and the oxygen buffer tank (28) is fixedly connected with a second flow control valve (34), a temperature control component is arranged in the water tank (35), a pressure sensor (36) is fixedly arranged in the oxygen buffer tank (28), the temperature control assembly comprises an electric heating pipe (37) and a semiconductor refrigerator (38) which are fixedly arranged in a water tank (35); it is characterized in that the preparation method is characterized in that,

the working method of the pressure swing adsorption oxygen equipment comprises the following specific steps:

a) air is sucked by a compressor and is subjected to pressurization treatment, meanwhile, the entering air passes through the filtering and purifying effect of an air purifying assembly, impurities such as dust and the like are removed, an adsorption tank (1) for adsorption is selected, the compressed air is introduced into the adsorption tank (1), at the moment, a servo motor (8) rotates to drive a rotating rod (7) to rotate, the rotating rod (7) rotates to drive a plurality of strip-shaped stirring plates (9) to rotate, so that zeolite molecular sieves filled inside filter the entering air, nitrogen, carbon dioxide and water vapor in the air are adsorbed and removed, and high-purity oxygen is led out through a second air duct (6);

b) at the moment, an electromagnetic valve (31) on an air inlet pipe (29) is opened, high-purity oxygen passes through a second air duct (6) and enters the air inlet pipe (29), then enters an oxygen buffer tank (28) through the air inlet pipe (29), the pressure in the oxygen buffer tank (28) is sensed through a pressure sensor (36), the throughput of two second flow control valves (34) is changed, water in a bag body (40) is increased or reduced, and the effect of increasing or reducing the pressure of the oxygen is achieved;

c) the temperature of water is controlled by an electric heating pipe (37) or a semiconductor refrigerator (38) in the water tank (35), and the water circularly enters the bag body (40), so that the temperature of oxygen introduced into the oxygen buffer tank (28) can be controlled, the temperature of the output oxygen is ensured, and the temperature of the output oxygen is prevented from being too high or too low;

d) when the adsorption effect of the adsorption tank (1) reaches a threshold value, introducing compressed air into the other adsorption tank (1) and repeating the above operation to prepare oxygen, performing uninterrupted oxygen generation operation, simultaneously communicating the saturated adsorption tank (1) with the outside and opening a micro fan (13), releasing pressure in the adsorption tank (1), and simultaneously discharging nitrogen and the like;

e) at the moment, a part of oxygen prepared by the other adsorption tank (1) enters a cylinder cover (4) on the adsorption tank (1) through a second air duct (6), the introduced oxygen is heated through a plurality of annular electric heating pipes (27) in the cylinder cover (4) and is matched with a helical blade (26) driven by the rotation of a rotating rod (7) to rotate, so that the oxygen is introduced into the adsorption tank (1) in an auxiliary manner, and the zeolite molecular sieve is desorbed;

f) when adsorption tank (1) played the filtering action, servo motor (8) rotated, drive bull stick (7) and rotate, bull stick (7) drive a plurality of plectrums (23) through a plurality of torsion spring (25) and rotate, a plurality of plectrums (23) drive annular piece (20) through a plurality of stopper (22) and rotate, annular piece (20) rotate to a certain position receive the effect of fan-shaped piece (21) and stop, thereby seal one of them through the blow vent, servo motor (8) rotation direction is different its confined blow vent that runs through also different, form the effect of control gas flow direction.

2. The working method according to claim 1, characterized in that a telescopic rod (14) is horizontally arranged in the barrel (12), one end of the telescopic rod (14) is fixedly connected with the inner wall of the barrel (12) through a plurality of connecting rods, the other end of the telescopic rod (14) extends out of the barrel (12) and is coaxially and fixedly connected with a circular truncated cone abutting block (15), a limiting spring (16) is sleeved on the telescopic rod (14), one end of the limiting spring (16) is fixedly connected with one end of the telescopic rod (14), and the other end of the limiting spring (16) is fixedly connected with the circular truncated cone abutting block (15).

Technical Field

The invention relates to the technical field of oxygen preparation, in particular to a use method of pressure swing adsorption oxygen equipment.

Background

Pressure swing adsorption is a gas adsorption separation technology, pressure swing adsorption oxygen equipment is a device for filtering air by utilizing pressure swing adsorption to produce high-purity oxygen, the device generally filters and adsorbs compressed air in sequence through two adsorption tanks filled with zeolite molecular sieves, when one adsorption tank is saturated, the adsorption tank is switched to another adsorption tank for filtration and adsorption, and the adsorption tank saturated simultaneously carries out desorption operation, carries out regeneration filtration operation on the zeolite molecular sieves, recovers the filtration and adsorption effects of the zeolite molecular sieves, and can achieve uninterrupted oxygen production by switching continuously.

However, the existing pressure swing adsorption oxygen equipment has the following disadvantages:

1. when one adsorption tank is desorbed, a part of oxygen produced by the other adsorption tank is generally required to be subjected to auxiliary desorption, so that the backflow phenomenon is easy to occur, and the oxygen preparation is influenced;

2. meanwhile, the existing desorption action efficiency and effect are not high enough, the moisture removal effect is poor, and the situation that desorption is impossible and replacement is needed is easy to occur when the water content of the zeolite molecular sieve is high.

3. To the oxygen that produces because pressure problem need set up the buffer tank, need carry out temperature control to the oxygen of making simultaneously, the buffering and the accuse temperature effect are realized to comparatively more device to current equipment needs.

Disclosure of Invention

The invention aims to provide a pressure swing adsorption oxygen device.

In order to achieve the purpose, the invention adopts the following technical scheme:

providing pressure swing adsorption oxygen equipment, comprising two adsorption tanks and an oxygen buffer tank, wherein a closed cover is arranged in a tank opening on the upper side of the adsorption tank in a matching manner, the closed cover is fixed with the adsorption tank in a sealing manner through a flange structure, a circular opening is arranged on the closed cover, a cylinder cover corresponding to the circular opening is fixedly arranged on the upper end surface of the closed cover, a first air duct is fixedly connected at the lower end of the adsorption tank, a second air duct is fixedly connected on the side wall of the cylinder cover, a desorption derivation component is fixedly connected on the first air duct, pneumatic switching valves are fixedly connected on the first air duct and the second air duct, a rotating rod is vertically arranged in the adsorption tank, a servo motor is fixedly arranged on the upper end surface of the cylinder cover, the upper end of the rotating rod penetrates through the cylinder cover and is coaxially and fixedly connected with the output end of the servo motor, and an air flow guide component in transmission connection with the rotating, the fixed a plurality of groups of bar stirring boards that are equipped with of winding on the bull stick in the adsorption tank, every group the bar stirring board includes from last down vertical arrangement and fixes a plurality of bar stirring boards on the bull stick, be equipped with the supplementary desorption subassembly of being connected with the bull stick transmission in the drum cover, both ends difference fixedly connected with intake pipe and outlet duct, two about the oxygen buffer tank the second air duct all with intake pipe fixed connection and intercommunication. The desorption leading-out component comprises a leading-out pipe fixedly connected and communicated with the first gas-guide pipe, a rotary separating valve is fixedly connected on the leading-out pipe, one end of the delivery pipe, which is far away from the first air duct, is fixedly connected with a cylinder body, the airflow guide assembly comprises a sealing block horizontally arranged in a cylinder cover, the outer wall of the sealing block is fixedly connected with the cylinder cover in a sealing way, the sealing block is sleeved on the rotating rod in a rotating way, two through air vents are vertically and symmetrically arranged on the sealing block, one-way valves are fixedly arranged in the two through air vents, the directions of the two one-way valves are opposite, the upper side of the sealing block is provided with a sector sealing block which is fixedly connected with an annular block, the annular block is rotatably sleeved on the rotating rod, the rotating rod is provided with an elastic limiting assembly for the annular block, and the upper end face of the sealing block is fixedly provided with a fan-shaped abutting block. The elastic limiting assembly comprises an annular groove formed in the annular inner wall of the annular block, a plurality of limiting blocks are fixedly arranged in the annular groove in an encircling mode, a plurality of shifting pieces are arranged in the annular groove in the encircling mode and are all connected with the rotating rod in a rotating mode through rotating shafts, a torsion spring is sleeved on each rotating shaft, one end of the torsion spring is fixedly connected with the shifting pieces, and the other end of the torsion spring is fixedly connected with the rotating rod. The auxiliary desorption assembly comprises a helical blade vertically arranged in a cylinder cover, the helical blade is fixedly sleeved on the rotating rod, a plurality of annular electric heating pipes are horizontally and uniformly fixedly arranged on the inner wall of the cylinder cover, and the annular electric heating pipes correspond to the helical blade in position. The air inlet pipe is fixedly provided with an electromagnetic valve, and the air outlet pipe is fixedly connected with a first flow control valve. The oxygen buffer tank is internally provided with a bag body, the bag body is filled with water, one side of the oxygen buffer tank is provided with a circulating pipe, two ends of the circulating pipe penetrate through the oxygen buffer tank and are fixedly connected with the bag body, a water tank is fixedly connected onto the circulating pipe, a circulating water pump is fixedly connected onto the circulating pipe, a second flow control valve is fixedly connected at the connecting position of the circulating pipe and the oxygen buffer tank, a temperature control assembly is arranged in the water tank, and a pressure sensor is fixedly arranged in the oxygen buffer tank. The temperature control assembly comprises an electric heating pipe and a semiconductor refrigerator which are fixedly arranged in the water tank.

Further, the pressure swing adsorption oxygen equipment comprises the following working steps:

a) air is sucked by the compressor and is pressurized, meanwhile, impurities such as dust and the like are removed from the entering air through the filtering and purifying effect of the air purifying assembly, the adsorption tank for adsorption is selected, the compressed air is introduced into the adsorption tank, the servo motor rotates at the moment to drive the rotating rod to rotate, the rotating rod rotates to drive the plurality of strip-shaped stirring plates to rotate, so that the zeolite molecular sieve filled inside the adsorption tank filters the entering air, nitrogen, carbon dioxide and water vapor in the air are adsorbed and removed, and high-purity oxygen is led out through the second air guide tube;

b) at the moment, the electromagnetic valve on the air inlet pipe is opened, high-purity oxygen passes through the second air duct and enters the air inlet pipe, then enters the oxygen buffer tank through the air inlet pipe, the pressure sensor senses the pressure in the oxygen buffer tank, the throughput of the two second flow valves is changed, water in the bag body is increased or reduced, and the function of pressurizing or decompressing the oxygen is achieved;

c) the temperature of the water is controlled by an electric heating pipe or a semiconductor refrigerator in the water tank, the water circularly enters the capsule body, the temperature of the oxygen introduced into the oxygen buffer tank can be controlled, the temperature of the output oxygen is ensured, and the temperature of the output oxygen is prevented from being too high or too low;

d) when the adsorption effect of the adsorption tank reaches a threshold value, compressed air is introduced into the other adsorption tank, the operations are repeated to prepare oxygen, the oxygen is continuously generated, the saturated adsorption tank is communicated with the outside, the micro-fan is opened, the pressure in the adsorption tank is released, and nitrogen and the like are discharged;

e) at the moment, a part of oxygen prepared by the other adsorption tank enters a cylinder cover on the adsorption tank through a second air duct, the introduced oxygen is heated through a plurality of annular electric heating pipes in the cylinder cover and is matched with a helical blade driven by the rotation of a rotating rod to rotate, so that the oxygen is introduced into the adsorption tank in an auxiliary manner, and the zeolite molecular sieve is desorbed;

f) when the adsorption tank plays the filtering action, servo motor rotates, drives the bull stick and rotates, the bull stick drives a plurality of plectrums through a plurality of torsion spring and rotates, a plurality of plectrums drive the annular piece through a plurality of stoppers and rotate, the annular piece rotates and receives the effect of fan-shaped piece and stops to a certain position to run through the blow vent to one of them and seal, servo motor rotates the different its confined blow vent that runs through of direction and also is different, form the effect of control gas flow direction, supplementary adsorption tank's function.

The improved miniature fan barrel is characterized in that a miniature fan is fixedly arranged in the barrel body, a telescopic rod is horizontally arranged in the barrel body, one end of the telescopic rod is fixedly connected with the inner wall of the barrel body through a plurality of connecting rods, the other end of the telescopic rod extends out of the barrel body and is fixedly connected with a round table supporting block in a coaxial mode, a limiting spring is sleeved on the telescopic rod, one end of the limiting spring is fixedly connected with one end of the telescopic rod, and the other end of the limiting spring is fixedly connected.

The invention has the beneficial effects that:

the device improves the adsorption tank, a stirring structure is arranged in the adsorption tank, stirring is carried out during adsorption and desorption operation, sufficiency is guaranteed, and meanwhile the stirring structure rotates forwards and turns over to control the flow direction of gas in the adsorption tank, so that backflow phenomenon is avoided during adsorption and desorption, and the adsorption and desorption effects and efficiency are guaranteed; the desorption auxiliary assembly is arranged, the micro fan and a component for heating and conveying backflow oxygen are utilized, the desorption efficiency and effect are improved, meanwhile, the water is removed well, and when the desorption auxiliary assembly is not used, the round platform abutting block is limited by the limiting spring to seal the barrel, so that the sealing performance is ensured; the device has still set up the subassembly that oxygen pressure adjusted, adjusts the oxygen pressure that leads to, can control the temperature of oxygen when adjusting, guarantees the oxygen quality of deriving.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic rear perspective view of the present invention;

FIG. 3 is a schematic view showing the internal structure of the canister of the present invention;

FIG. 4 is a schematic view of the internal structure of the cylinder cover according to the present invention;

FIG. 5 is a schematic sectional perspective view of an oxygen buffer tank according to the present invention;

FIG. 6 is a schematic perspective view of a desorption auxiliary assembly according to the present invention;

fig. 7 is a schematic perspective view of the elastic limiting assembly according to the present invention.

In the figure:

the device comprises an adsorption tank 1, a closed cover 2, a flange plate 3, a cylindrical cover 4, a first air duct 5, a second air duct 6, a rotating rod 7, a servo motor 8, a strip-shaped stirring plate 9, a delivery pipe 10, a rotary separating valve 11, a cylindrical body 12, a micro fan 13, a telescopic rod 14, a round table abutting block 15, a limiting spring 16, a closed block 17, a check valve 18, a fan-shaped closed block 19, a ring-shaped block 20, a fan-shaped abutting block 21, a limiting block 22, a poking sheet 23, a rotating shaft 24, a torsion spring 25, a helical blade 26, an annular electric heating pipe 27, an oxygen buffer tank 28, an air inlet pipe 29, an air outlet pipe 30, an electromagnetic valve 31, a first flow control valve 32, a circulating pipe 33, a second flow control valve 34, a water tank 35, a pressure sensor 36, an electric heating pipe 37, a.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.

Referring to fig. 1, 2 and 3, the pressure swing adsorption oxygen equipment includes two adsorption tanks 1 and an oxygen buffer tank 28, both of which are existing tank bodies arranged in the pressure swing adsorption oxygen equipment, a sealing cover 2 is arranged in a tank opening on the upper side of the adsorption tank 1 in a matching manner, the sealing cover 2 is fixed with the adsorption tank 1 in a sealing manner through a flange structure 3, the sealing cover 2 can be disassembled, so as to replace the zeolite molecular sieve inside, a circular opening is arranged on the sealing cover 2, a cylinder cover 4 corresponding to the circular opening is fixedly arranged on the upper end face of the sealing cover 2, a first air duct 5 is fixedly connected to the lower end of the adsorption tank 1, a second air duct 6 is fixedly connected to the side wall of the cylinder cover 4, and is respectively used for leading in air and leading out oxygen, a desorption leading-out component is fixedly connected to the first air duct 5 and is used for desorption operation of the zeolite molecular sieve, pneumatic switching valves are fixedly connected to the first, the adsorption device is characterized in that the device adopts the prior art and controls the opening and closing, a rotating rod 7 is vertically arranged in an adsorption tank 1, a servo motor 8 is fixedly arranged on the upper end surface of a cylinder cover 4, the upper end of the rotating rod 7 penetrates through the cylinder cover 4 and is coaxially and fixedly connected with the output end of the servo motor 8, the servo motor 8 can drive the rotating rod 7 to rotate when working, an airflow guide assembly in transmission connection with the rotating rod 7 is arranged in an opening at the lower end of the cylinder cover 4, the airflow flow direction between the cylinder cover 4 and the adsorption tank 1 is controlled, a plurality of groups of strip-shaped stirring plates 9 are fixedly arranged on the rotating rod 7 in a surrounding manner under the action of the adsorption tank 1, each group of strip-shaped stirring plates 9 comprises a plurality of strip-shaped stirring plates 9 which are vertically arranged and fixed on the rotating rod 7 from top to bottom, the stirring effect is achieved, the uniform adsorption is ensured, an auxiliary desorption assembly in transmission connection with the rotating rod 7 is arranged in, the two second gas-guide tubes 6 are fixedly connected and communicated with a gas inlet tube 29 and are used for controlling the pressure of the introduced oxygen.

As shown in fig. 3 and 6, the desorption leading-out assembly comprises a leading-out tube 10 fixedly connected and communicated with the first gas-guide tube 5, a rotary separating valve 11 is fixedly connected on the leading-out tube 10 and used for controlling the leading-out of nitrogen, a cylinder 12 is fixedly connected at one end of the leading-out tube 10 far away from the first gas-guide tube 5, a micro-fan 13 is fixedly arranged in the cylinder 12, the micro-fan 13 adopts the prior art and assists in pressure relief and nitrogen leading-out, a telescopic rod 14 is horizontally arranged in the cylinder 12, one end of the telescopic rod 14 is fixedly connected with the inner wall of the cylinder 12 through a plurality of connecting rods, the other end of the telescopic rod 14 extends out of the cylinder 12 and is coaxially and fixedly connected with a circular truncated cone abutting block 15, a limiting spring 16 is sleeved on the telescopic rod 14, one end of the limiting spring 16 is fixedly connected with one end, the nitrogen gas is not influenced to be led out, and meanwhile, the cylinder body 12 is sealed when the desorption operation is not carried out, so that moisture, dust and the like are prevented from entering.

As shown in fig. 4, the airflow guiding assembly includes a sealing block 17 horizontally disposed in the cylinder cover 4, the outer wall of the sealing block 17 is fixedly connected to the cylinder cover 4 in a sealing manner, the sealing block 17 is rotatably sleeved on the rotating rod 7, two through ventilation ports are vertically and symmetrically disposed on the sealing block 17, one-way valves 18 are fixedly disposed in the two through ventilation ports, the two-way valves 18 are opposite in direction, two airflows in different directions can be led to the sealing block 17, a fan-shaped sealing block 19 is disposed on the upper side of the sealing block 17, a ring-shaped block 19 is fixedly connected to the fan-shaped sealing block 19, the ring-shaped block 20 is rotatably sleeved on the rotating rod 7, an elastic limiting assembly for the ring-shaped block 20 is disposed on the rotating rod 7, a fan-shaped abutting block 21 is fixedly disposed on the upper end face of the sealing block 17, the fan-shaped sealing block 19 can be driven to rotate.

As shown in fig. 7, the elastic limiting component comprises an annular groove formed in the annular inner wall of the annular block 20, a plurality of limiting blocks 22 are fixedly arranged in the annular groove around the annular groove, a plurality of shifting pieces 23 are arranged in the annular groove around the annular groove, the shifting pieces 23 are rotatably connected with the rotating rod 7 through rotating shafts 24, a torsion spring 25 is sleeved on the rotating shaft 24, one end of the torsion spring 25 is fixedly connected with the shifting pieces 23, the other end of the torsion spring 25 is fixedly connected with the rotating rod 7, the rotating rod 7 can be driven to rotate through rotation of the rotating rod 7 under the action of the torsion spring 25, and when the fan-shaped sealing block 19 is limited by the fan-shaped supporting block 21, the rotating rod 7 does not drive the annular block 20 to rotate any more, so.

As shown in fig. 4, supplementary desorption subassembly includes vertical helical blade 26 that sets up in drum cover 4, helical blade 26 fixed cover is established on bull stick 7, increase the stroke of backward flow oxygen in drum cover 4, guarantee the heating effect, the supplementary conduction of carrying on simultaneously, drum cover 4 inner wall is improved the level and is evenly fixed a plurality of annular electric heating pipe 27 that are equipped with, a plurality of annular electric heating pipe 27 all correspond with helical blade 26 position, a plurality of annular electric heating pipe 27 adopt prior art, let in the adsorption tank 1 and carry out the desorption after heating oxygen, play the effect of getting rid of to water.

As shown in fig. 2, an electromagnetic valve 31 is fixed on the inlet pipe 29 to control the opening and closing of the inlet pipe, and a first flow control valve 32 is fixed on the outlet pipe 30 to control the amount of oxygen produced in a unit time.

As shown in fig. 2 and 5, a bag body 40 is arranged in the oxygen buffer tank 28, the bag body 40 is filled with water, a circulation pipe 33 is arranged on one side of the oxygen buffer tank 28, two ends of the circulation pipe 33 both penetrate through the oxygen buffer tank 28 and are fixedly connected with the bag body 40, a water tank 35 is fixedly connected to the circulation pipe 33, a circulation water pump 39 is fixedly connected to the circulation pipe 33, the circulation water pump 39 works to control water circulation among the water tank 35, the circulation pipe 3 and the bag body 40, a second flow control valve 34 is fixedly connected to the connection position of the circulation pipe 33 and the oxygen buffer tank 28, the bag body 40 can be controlled to be enlarged or reduced by changing the two second flow control valves 34, a pressure control function is achieved, a temperature control component is arranged in the water tank 35 to maintain a proper temperature, the oxygen is temperature controlled, a pressure sensor 36 is fixedly arranged in the oxygen buffer tank 28, and the pressure sensor 36 can detect the pressure, thereby controlling the two second flow control valves 34.

Referring to fig. 2, the temperature control assembly includes an electric heating tube 37 and a semiconductor cooler 38 fixedly disposed in the water tank 35, and controls the temperature of water in the water tank 35, thereby controlling the temperature of oxygen, according to the prior art.

The pressure swing adsorption oxygen equipment comprises the following working steps:

a) air is sucked by a compressor and is pressurized, meanwhile, impurities such as dust and the like are removed by the air entering through the filtering and purifying effect of the air purifying assembly, the adsorption tank 1 for adsorption is selected, the compressed air is introduced into the adsorption tank 1, at the moment, the servo motor 8 rotates to drive the rotating rod 7 to rotate, the rotating rod 7 rotates to drive the strip-shaped stirring plates 9 to rotate, so that the zeolite molecular sieve filled inside the adsorption tank filters the entering air, nitrogen, carbon dioxide and water vapor in the air are adsorbed and removed, and high-purity oxygen is led out through the second air duct 6;

b) at this time, the electromagnetic valve 31 on the air inlet pipe 29 is opened, high-purity oxygen passes through the second air duct 6 and enters the air inlet pipe 29, then enters the oxygen buffer tank 28 through the air inlet pipe 29, the pressure sensor 36 senses the pressure inside the oxygen buffer tank 28, the throughput of the two second flow control valves 34 is changed, water inside the capsule 40 is increased or reduced, and the function of pressurizing or decompressing the oxygen is achieved;

c) the temperature of the water is controlled by the electric heating tube 37 or the semiconductor refrigerator 38 in the water tank 35, and the water circularly enters the bag body 40, so that the temperature of the oxygen introduced into the oxygen buffer tank 28 can be controlled, the temperature of the output oxygen is ensured, and the temperature of the output oxygen is prevented from being too high or too low;

d) when the adsorption effect of the adsorption tank 1 reaches a threshold value, introducing compressed air into the other adsorption tank 1, repeating the above operations to prepare oxygen, performing uninterrupted oxygen generation operation, simultaneously communicating the saturated adsorption tank 1 with the outside, opening the micro fan 13, relieving the pressure in the adsorption tank 1, and simultaneously discharging nitrogen and the like;

e) at the moment, a part of oxygen prepared by the other adsorption tank 1 enters the cylinder cover 4 on the adsorption tank 1 through the second air duct 6, the introduced oxygen is heated through a plurality of annular electric heating pipes 27 in the cylinder cover 4 and rotates by matching with the helical blade 26 driven by the rotation of the rotating rod 7, so that the oxygen is introduced into the adsorption tank 1 in an auxiliary manner, and the zeolite molecular sieve is desorbed;

f) when adsorption tank 1 plays filtering role, servo motor 8 rotates, it rotates to drive bull stick 7, bull stick 7 drives a plurality of plectrums 23 through a plurality of torsion spring 25 and rotates, a plurality of plectrums 23 drive annular piece 20 through a plurality of stopper 22 and rotate, annular piece 20 rotates and receives the effect of fan-shaped piece 21 and stops to a certain position, thereby seal one of them through the blow vent, servo motor 8 rotates the different its confined blow vent that runs through of direction and is also different, form the effect of control gas flow direction, supplementary adsorption tank 1's function.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.