High-purity oxygen extraction equipment

Abstract

The utility model belongs to the technical field of oxygen production, and particularly relates to high-purity oxygen extraction equipment which comprises an upper rectifying tower, a condensation evaporator is mounted at the bottom of the upper rectifying tower; the upper rectifying tower is sequentially connected with a high-purity oxygen tower and a lower rectifying tower; the side wall of the condensing evaporator is connected with the top of the lower rectifying tower; a high-purity oxygen evaporator is mounted at the bottom of the high-purity oxygen tower; the bottom of the lower rectifying tower is connected with a lower tower throttle valve; the other end of the lower tower throttle valve is connected with the side wall of the upper tower of the rectifying tower; the bottom of the upper rectifying tower is connected with an upper tower throttle valve; the other end of the upper tower throttle valve is connected with the side wall of the high-purity oxygen tower; the whole equipment is simple and convenient to operate and does not need to be limited by large-scale air separation equipment, and the used equipment is commonly used by crystalline silicon manufacturers, so that the crystalline silicon manufacturers do not need to additionally purchase equipment, the equipment investment of the factories is further reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen production, and specifically relates to a high-purity oxygen extraction device. Background Technique

[0002] As a single gas with relatively high purity, high-purity oxygen is mostly used in the chemical and electronics industries. Compared with industrial liquid oxygen, the purity requirement for high-purity oxygen is relatively high.

[0003] At present, there are many processes for producing high-purity oxygen in the air separation industry in the market. Most of them are realized through air separation equipment. There are ways of combining catalysis and rectification, and there are also ways of using large air separation equipment to produce high-purity oxygen by single low-temperature rectification. However, these processes for preparing high-purity oxygen require the configuration of many large-scale equipment, which requires a large investment, thereby increasing the production cost of high-purity oxygen. At the same time, more equipment will make the operation complicated.

[0004] Therefore, the utility model provides a high-purity oxygen extraction device. Content of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background technique.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: A high-purity oxygen extraction device described in the utility model includes an upper rectification column; a condensing evaporator is installed at the bottom of the upper rectification column; the upper rectification column is sequentially connected to a high-purity oxygen column and a lower rectification column; the side wall of the condensing evaporator is connected to the top of the lower rectification column; a high-purity oxygen evaporator is installed at the bottom of the high-purity oxygen column; the bottom of the lower rectification column is connected to a lower column throttle valve; the other end of the lower column throttle valve is connected to the side wall of the upper rectification column; the bottom of the upper rectification column is connected to an upper column throttle valve; the other end of the upper column throttle valve is connected to the side wall of the high-purity oxygen column; the middle of the high-purity oxygen evaporator is connected to a liquid air throttle valve; the other end of the liquid air throttle valve is connected to the side wall of the lower rectification column; through the above structure, high-purity oxygen liquid is produced. The overall device is relatively simple and easy to operate, without being restricted by large air separation equipment. The equipment used is common in crystalline silicon manufacturers, enabling crystalline silicon manufacturers not to need to purchase additional equipment, thereby reducing the equipment investment of the factory and lowering the production cost.

[0007] Preferably, the lower column of the rectification column includes a column body; an air inlet pipe is fixedly connected to the bottom of the side wall of the column body; a liquid inlet pipe is fixedly connected to the top of the side wall of the column body; an exhaust pipe is fixedly connected to the top of the column body; a liquid discharge pipe is fixedly connected to the bottom of the column body; a plurality of trays are fixedly connected to the middle part of the inner side of the column body; a deflector is fixedly connected to the top of the tray; the deflector is arranged in a spiral shape; a liquid retaining pipe is fixedly connected to the center of the top of the tray; the liquid retaining pipe is connected to the deflector, and the height of the liquid retaining pipe is lower than that of the deflector; a liquid guide pipe is fixedly connected to the bottom of the tray; the liquid guide pipe is communicated with the liquid retaining pipe; a plurality of ventilation grooves are formed in the middle of the tray; a ventilation valve is slidably connected to the middle of the ventilation groove; through the above structure, the oxygen-rich liquid and the oxygen-rich gas can react more fully inside the lower column of the rectification column, thereby improving the rectification effect.

[0008] Preferably, a rubber ring is fixedly connected to the middle of the ventilation groove; a rubber sleeve is fixedly connected to the middle of the ventilation valve; the rubber sleeve is arranged in a conical shape with a larger upper part and a smaller lower part; through the above structure, the influence of impurities in the oxygen-rich liquid on the movement of the ventilation valve can be reduced, the situation that the ventilation valve cannot move up and down normally due to impurities can be reduced, and further the situation of the decline of the rectification effect can be reduced.

[0009] Preferably, a fixing frame is fixedly connected to the top of the ventilation valve; a fixing block is fixedly connected to the top of the fixing frame; a pair of flexible ropes are fixedly connected to the side wall of the fixing block facing the ventilation valve; through the above structure, larger oxygen-rich gas bubbles can be broken into small bubbles, thereby increasing the contact area with the oxygen-rich liquid and enabling the oxygen-rich liquid and the oxygen-rich gas to react more fully.

[0010] Preferably, a bearing is fixedly connected to the end of the flexible rope; a plurality of fan blades are fixedly connected to the middle of the bearing in a circumferential array; through the above structure, the oxygen-rich gas and the oxygen-rich liquid can react more fully.

[0011] Preferably, a liquid baffle is fixedly connected to the top of the tray; the liquid baffle surrounds the deflector inside; there is a gap between the liquid baffle and the column body, and the liquid baffle is arranged higher than the deflector; through the above structure, the temperature change range of the oxygen-rich liquid can be reduced, and the stability of the reaction can be improved.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. A high-purity oxygen extraction device according to the present utility model injects oxygen-rich liquid into the lower column of the rectification column and the high-purity oxygen evaporator, and then can complete the production of high-purity oxygen through the lower column of the rectification column, the upper column of the rectification column, the condensing evaporator, the high-purity oxygen column, and the high-purity oxygen evaporator. The overall device is relatively simple and easy to operate, without being restricted by large-scale air separation equipment. The equipment used is common in crystalline silicon manufacturers, enabling crystalline silicon manufacturers not to need to purchase additional equipment, thereby reducing the equipment investment of the factory and lowering the production cost.

[0014] 2. A high-purity oxygen extraction device according to the present utility model injects oxygen-rich liquid into the interior of the lower column of the rectification column, causing the oxygen-rich liquid to flow along the deflector at the top of the tray. Meanwhile, the oxygen-rich gas leaks out through the hole in the middle of the oxygen-rich gas vent valve and rectifies the oxygen-rich liquid. Since the deflector is arranged in a vortex shape, the oxygen-rich liquid will stay longer at the top of each tray, enabling the oxygen-rich gas discharged from multiple vent valves to fully react with the oxygen-rich liquid, thereby improving the rectification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below with reference to the accompanying drawings.

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the lower column of the rectification column in the present utility model;

[0018] Figure 3 is a schematic structural diagram of the tray in the present utility model;

[0019] Figure 4 is a schematic structural diagram of the deflector in the present utility model;

[0020] Figure 5 is a schematic structural diagram of the vent valve in the present utility model;

[0021] Figure 6 is a schematic structural diagram of the fan blade in the present utility model;

[0022] In the figure: 1, upper column of the rectification column; 2, condensing evaporator; 3, lower column of the rectification column; 4, throttle valve of the lower column; 5, throttle valve of the upper column; 6, high-purity oxygen evaporator; 7, high-purity oxygen column; 8, throttle valve of liquid air; 31, tower body; 32, intake pipe; 33, liquid inlet pipe; 34, exhaust pipe; 35, liquid discharge pipe; 36, tray; 37, deflector; 38, liquid retaining pipe; 39, liquid guiding pipe; 310, ventilation slot; 311, vent valve; 41, rubber ring; 42, rubber sleeve; 51, fixing frame; 52, fixing block; 53, flexible rope; 61, bearing; 62, fan blade; 71, liquid retaining plate; 81, rubber pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] As Figure 1 shown, a high-purity oxygen extraction device according to an embodiment of the present utility model includes an upper rectification column 1; a condensing evaporator 2 is installed at the bottom of the upper rectification column 1; the upper rectification column 1 is sequentially connected to a high-purity oxygen column 7 and a lower rectification column 3; the side wall of the condensing evaporator 2 is connected to the top of the lower rectification column 3; a high-purity oxygen evaporator 6 is installed at the bottom of the high-purity oxygen column 7; the bottom of the lower rectification column 3 is connected to a lower column throttle valve 4; the other end of the lower column throttle valve 4 is connected to the side wall of the upper rectification column 1; the bottom of the upper rectification column 1 is connected to an upper column throttle valve 5; the other end of the upper column throttle valve 5 is connected to the side wall of the high-purity oxygen column 7; the middle of the high-purity oxygen evaporator 6 is connected to a liquid air throttle valve 8; the other end of the liquid air throttle valve 8 is connected to the side wall of the lower rectification column 3; during operation, an oxygen-rich liquid is injected into the interior of the lower rectification column 3 and the high-purity oxygen evaporator 6. The high-purity oxygen evaporator 6 will evaporate the oxygen-rich liquid into an oxygen-rich gas and partially discharge it into the interior of the high-purity oxygen column 7, and the other part will be discharged into the interior of the lower rectification column 3 through the liquid air throttle valve 8, so that the oxygen-rich liquid and oxygen-rich gas in the lower rectification column 3 are rectified. The liquid generated in the lower rectification column 3 is discharged into the top of the upper rectification column 1 through the lower column throttle valve 4 and then flows into the interior of the condensing evaporator 2. The gas produced in the lower rectification column 3 will rise into the interior of the condensing evaporator 2. The gas and liquid entering the interior of the condensing evaporator 2 will undergo a morphological transformation under the action of the condensing evaporator 2. The generated gas will enter the interior of the upper rectification column 1 and rectify the liquid in the upper rectification column 1. The used gas is discharged from the top of the upper rectification column 1. The liquid produced by the condensing evaporator 2 will be divided into two parts. One part will flow back into the interior of the lower rectification column 3 for re-rectification, and the other part will enter the interior of the high-purity oxygen column 7 through the upper column throttle valve 5 and react with the gas produced by the high-purity oxygen evaporator 6, thereby producing high-purity oxygen liquid. The overall device is relatively simple and easy to operate, does not need to be restricted by large-scale air separation equipment, and the equipment used is common in crystalline silicon manufacturers, so that crystalline silicon manufacturers do not need to purchase additional equipment, thereby reducing the equipment investment of the factory and lowering the production cost.

[0025] As Figures 1 to 5As shown in the figure, the lower column 3 of the rectification column includes a column body 31; a gas inlet pipe 32 is fixedly connected to the bottom of the side wall of the column body 31; a liquid inlet pipe 33 is fixedly connected to the top of the side wall of the column body 31; an exhaust pipe 34 is fixedly connected to the top of the column body 31; a liquid discharge pipe 35 is fixedly connected to the bottom of the column body 31; a plurality of trays 36 are fixedly connected to the middle part of the inner side of the column body 31; a flow guide plate 37 is fixedly connected to the top of the tray 36; the flow guide plate 37 is arranged in a vortex shape; a liquid retaining pipe 38 is fixedly connected to the center of the top of the tray 36; the liquid retaining pipe 38 is connected to the flow guide plate 37, and the height of the liquid retaining pipe 38 is lower than the height of the flow guide plate 37; a liquid guide pipe 39 is fixedly connected to the bottom of the tray 36; the liquid guide pipe 39 is communicated with the liquid retaining pipe 38; a plurality of ventilation slots 310 are formed in the middle of the tray 36; a ventilation valve 311 is slidably connected to the middle of the ventilation slot 310; during operation, the oxygen-rich liquid is injected into the inside of the column body 31 through the liquid inlet pipe 33, and then the oxygen-rich liquid will fall on the top of the uppermost tray 36 and flow along the flow guide plate 37 until the liquid level above this layer of tray 36 exceeds the top of the liquid retaining pipe 38, and the excess liquid will flow into the inside of the liquid retaining pipe 38 and enter the upper part of the next layer of tray 36 through the liquid guide pipe 39. At the same time, the oxygen-rich liquid produced by the high-purity oxygen evaporator 6 will be injected into the inside of the column body 31 through the gas inlet pipe 32. As the gas content inside the column body 31 increases, the oxygen-rich gas will push the ventilation valve 311 in the middle of the bottom tray 36 upward under the action of air pressure, so that the hole in the middle of the ventilation valve 311 leaks out. The oxygen-rich gas will be discharged through the hole and form bubbles into the oxygen-rich liquid located at the top of the tray 36 and rectify the oxygen-rich liquid. Then these oxygen-rich gases will overflow layer by layer upward until they flow into the inside of the condensation evaporator 2 through the exhaust pipe 34. Since the flow guide plate 37 is arranged in a vortex shape, the oxygen-rich liquid will stay at the top of each layer of tray 36 for a longer time, so that the oxygen-rich gases discharged by the plurality of ventilation valves 311 can fully react with the oxygen-rich liquid. Through the above structure, the oxygen-rich liquid and the oxygen-rich gas can react more fully inside the lower column 3 of the rectification column, thereby improving the rectification effect.

[0026] As Figures 1 to 5As shown, a rubber ring 41 is fixedly connected to the middle of the ventilation groove 310; a rubber sleeve 42 is fixedly connected to the middle of the ventilation valve 311; the rubber sleeve 42 is arranged in a conical shape with a larger upper part and a smaller lower part; during operation, when the oxygen-rich liquid flows on the top of the tray 36, impurities inside the oxygen-rich liquid are likely to enter the gap between the ventilation groove 310 and the ventilation valve 311, hindering the up and down movement of the ventilation valve 311. Through the arrangement of the rubber ring 41 and the rubber sleeve 42, a gap can exist between the ventilation groove 310 and the ventilation valve 311, enabling the impurities to pass through, reducing the influence on the movement of the ventilation valve 311. At the same time, when the ventilation valve 311 moves downward due to water pressure, the conically arranged rubber sleeve 42 will squeeze the rubber ring 41, making the two closely combine, preventing the oxygen-rich liquid from passing through. Through the above structure, the influence of impurities in the oxygen-rich liquid on the movement of the ventilation valve 311 can be reduced, and the situation where the ventilation valve 311 cannot move up and down normally due to impurities can be reduced, thereby reducing the decline in the rectification effect.

[0027] As Figures 1 to 5 shown, a fixing frame 51 is fixedly connected to the top of the ventilation valve 311; a fixing block 52 is fixedly connected to the top of the fixing frame 51; a pair of flexible ropes 53 are fixedly connected to the side wall of the fixing block 52 facing the ventilation valve 311; during operation, when the oxygen-rich liquid flows along the flow guide plate 37 on the top of the tray 36, the water flow will drive a pair of flexible ropes 53 to swing, thereby dispersing the oxygen-rich gas bubbles overflowing through the hole in the middle of the ventilation valve 311, enabling larger bubbles to be dispersed into multiple small bubbles. Through the above structure, larger oxygen-rich gas bubbles can be dispersed into small bubbles, thereby increasing the contact area with the oxygen-rich liquid, enabling the oxygen-rich liquid and the oxygen-rich gas to react more fully.

[0028] As Figures 1 to 6 shown, a bearing 61 is fixedly connected to the end of the flexible rope 53; a plurality of fan blades 62 are fixedly connected to the middle of the bearing 61 in a circumferential array; during operation, when the oxygen-rich liquid flows through the fan blades 62, the fan blades 62 will rotate due to the impact of the water flow, thereby agitating the water flow, making the water flow direction more complex, and enabling the rear bearing 61 to swing more greatly in the complex water flow, thereby enhancing the dispersion effect on the oxygen-rich liquid bubbles. Through the above structure, the oxygen-rich gas and the oxygen-rich liquid can react more fully.

[0029] As Figures 1 to 4As shown, a liquid baffle 71 is fixedly connected to the top of the tray 36; the liquid baffle 71 surrounds the flow guide plate 37 inside; there is a gap between the liquid baffle 71 and the tower body 31, and the liquid baffle 71 is arranged higher than the flow guide plate 37; during operation, when the oxygen-rich liquid falls on the top of the tray 36, the oxygen-rich liquid will fall inside the liquid baffle 71, making it difficult for the oxygen-rich liquid to come into contact with the tower body 31, thereby reducing the heat exchange between the oxygen-rich liquid and the outside through the tower body 31 and preventing a large change in the temperature of the oxygen-rich liquid. Through the above structure, the temperature change range of the oxygen-rich liquid can be reduced, and the stability of the reaction can be improved.

[0030] As Figure 6 As shown, a rubber pad 81 is fixedly connected to the middle of the fan blade 62; the rubber pad 81 is arranged along the outer circumference of the fan blade 62; during operation, when the fan blade 62 swings and rotates in the water flow, the rubber pad 81 can reduce the damage suffered by the fan blade 62 and other components due to mutual collision.

[0031] During operation, oxygen-rich liquid is injected into the interior of the lower column 3 of the rectification column and the high-purity oxygen evaporator 6. The high-purity oxygen evaporator 6 will evaporate the oxygen-rich liquid into oxygen-rich gas and partially discharge it into the interior of the high-purity oxygen column 7. The other part is discharged into the interior of the lower column 3 of the rectification column through the liquid air throttle valve 8, enabling rectification of the oxygen-rich liquid and oxygen-rich gas inside the lower column 3 of the rectification column. The liquid generated inside the lower column 3 of the rectification column is discharged into the top of the upper column 1 of the rectification column through the lower column throttle valve 4 and then flows into the interior of the condenser-evaporator 2. The gas produced inside the lower column 3 of the rectification column will rise to the interior of the condenser-evaporator 2. The gas and liquid entering the interior of the condenser-evaporator 2 will undergo a phase transformation under the action of the condenser-evaporator 2. The generated gas will enter the interior of the upper column 1 of the rectification column and rectify the liquid inside the upper column 1 of the rectification column. The used gas is discharged from the top of the upper column 1 of the rectification column. The liquid produced by the condenser-evaporator 2 will be divided into two parts. One part flows back into the interior of the lower column 3 of the rectification column for re-rectification, and the other part will enter the interior of the high-purity oxygen column 7 through the upper column throttle valve 5 and react with the gas generated by the high-purity oxygen evaporator 6, thereby producing high-purity oxygen liquid. During operation, the oxygen-rich liquid is injected into the interior of the tower body 31 through the liquid inlet pipe 33, and then the oxygen-rich liquid will fall on the top of the uppermost tray 36 and flow along the deflector 37 until the liquid level above this tray 36 exceeds the top of the liquid baffle pipe 38. The excess liquid will pour into the interior of the liquid baffle pipe 38 and enter above the next tray 36 through the liquid guide pipe 39. At the same time, the oxygen-rich liquid produced by the high-purity oxygen evaporator 6 will be injected into the interior of the tower body 31 through the air inlet pipe 32. As the gas content inside the tower body 31 increases, the oxygen-rich gas will push the ventilation valve 311 in the middle of the lowermost tray 36 upward under the action of the air pressure, causing the hole in the middle of the ventilation valve 311 to leak. The oxygen-rich gas will be discharged through the hole and form bubbles into the oxygen-rich liquid located at the top of the tray 36 and rectify the oxygen-rich liquid. Then these oxygen-rich gases will overflow layer by layer upward until they pour into the interior of the condenser-evaporator 2 through the exhaust pipe 34. Since the deflector 37 is arranged in a spiral shape, the oxygen-rich liquid will stay at the top of each tray 36 for a longer time, enabling the oxygen-rich gas discharged from multiple ventilation valves 311 to fully react with the oxygen-rich liquid. When the oxygen-rich liquid flows on the top of the tray 36, impurities inside the oxygen-rich liquid are likely to enter the gap between the ventilation groove 310 and the ventilation valve 311, hindering the up and down movement of the ventilation valve 311. By setting the rubber ring 41 and the rubber sleeve 42, there can be a gap between the ventilation groove 310 and the ventilation valve 311, allowing impurities to pass through and reducing the impact on the movement of the ventilation valve 311. At the same time, when the ventilation valve 311 moves downward due to water pressure, the conical rubber sleeve 42 will squeeze the rubber ring 41, causing the two to be tightly combined and preventing the oxygen-rich liquid from passing through. When the oxygen-rich liquid flows along the deflector 37 on the top of the tray 36, the water flow will drive a pair of flexible ropes 53 to swing.Furthermore, the oxygen-rich gas bubbles overflowing through the hole in the middle of the ventilation valve 311 can be broken up, enabling larger bubbles to disperse into multiple small bubbles. When the oxygen-rich liquid flows through the fan blades 62, the fan blades 62 will rotate due to the impact of the water flow, thereby agitating the water flow and making the water flow direction more complex. As a result, the rear bearing 61 will swing more significantly in the complex water flow, further enhancing the effect of breaking up the oxygen-rich liquid bubbles. When the oxygen-rich liquid falls on the top of the tray 36, the oxygen-rich liquid will fall inside the liquid baffle 71, making it difficult for the oxygen-rich liquid to come into contact with the tower body 31, thereby reducing the heat exchange between the oxygen-rich liquid and the outside through the tower body 31 and preventing a large change in the temperature of the oxygen-rich liquid.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-purity oxygen extraction device, comprising an upper distillation tower (1); characterized in that: A condensing evaporator (2) is installed at the bottom of the upper column (1) of the rectifying column; the upper column (1) of the rectifying column is sequentially connected to a high-purity oxygen column (7) and a lower column (3) of the rectifying column; the side wall of the condensing evaporator (2) is connected to the top of the lower column (3) of the rectifying column; a high-purity oxygen evaporator (6) is installed at the bottom of the high-purity oxygen column (7); the bottom of the lower column (3) of the rectifying column is connected to a lower column throttle valve (4); the other end of the lower column throttle valve (4) is connected to the side wall of the upper column (1) of the rectifying column; the bottom of the upper column (1) of the rectifying column is connected to an upper column throttle valve (5); the other end of the upper column throttle valve (5) is connected to the side wall of the high-purity oxygen column (7); the middle of the high-purity oxygen evaporator (6) is connected to a liquid air throttle valve (8); the other end of the liquid air throttle valve (8) is connected to the side wall of the lower column (3) of the rectifying column.

2. The high-purity oxygen extraction device according to claim 1, characterized in that: The lower column (3) of the rectifying column includes a column body (31); an air inlet pipe (32) is fixedly connected to the bottom of the side wall of the column body (31); a liquid inlet pipe (33) is fixedly connected to the top of the side wall of the column body (31); an exhaust pipe (34) is fixedly connected to the top of the column body (31); a liquid discharge pipe (35) is fixedly connected to the bottom of the column body (31); a plurality of trays (36) are fixedly connected to the middle of the inner side of the column body (31); a deflector (37) is fixedly connected to the top of the tray (36); the deflector (37) is arranged in a spiral shape; a liquid retaining pipe (38) is fixedly connected to the center of the top of the tray (36); the liquid retaining pipe (38) is connected to the deflector (37), and the height of the liquid retaining pipe (38) is lower than the height of the deflector (37); a liquid guiding pipe (39) is fixedly connected to the bottom of the tray (36); the liquid guiding pipe (39) is communicated with the liquid retaining pipe (38); a plurality of ventilation slots (310) are formed in the middle of the tray (36); a ventilation valve (311) is slidably connected to the middle of the ventilation slot (310).

3. A high-purity oxygen extraction equipment according to claim 2, characterized in that: A rubber ring (41) is fixedly connected to the middle of the ventilation slot (310); a rubber sleeve (42) is fixedly connected to the middle of the ventilation valve (311); the rubber sleeve (42) is arranged in a conical shape with a larger upper part and a smaller lower part.

4. The high-purity oxygen extraction device according to claim 3, characterized in that: A fixing frame (51) is fixedly connected to the top of the ventilation valve (311); a fixing block (52) is fixedly connected to the top of the fixing frame (51); a pair of flexible ropes (53) are fixedly connected to the side wall of the fixing block (52) facing the ventilation valve (311).

5. An apparatus for extracting high-purity oxygen according to claim 4, characterized in that: Bearings (61) are fixedly connected to the ends of the flexible ropes (53); a plurality of fan blades (62) are fixedly connected to the middle of the bearings (61) in a circumferential array.

6. The high-purity oxygen extraction device according to claim 5, wherein: A liquid baffle (71) is fixedly connected to the top of the tray (36); the liquid baffle (71) surrounds the deflector (37) inside; there is a gap between the liquid baffle (71) and the column body (31), and the liquid baffle (71) is arranged higher than the deflector (37).

Images