Five-tower low-pressure adsorption vacuum desorption oxygen production integrated machine

Abstract

The invention discloses a five-tower low-pressure adsorption vacuum desorption oxygen generation integrated machine, and belongs to the technical field of oxygen generators, the five-tower low-pressure adsorption vacuum desorption oxygen generation integrated machine comprises an outer machine shell and a protective top cover mounted at the upper end of the outer machine shell, an oxygen port is formed in the side edge of the protective top cover, and an upper cylinder body and a lower cylinder body which are distributed up and down are mounted in the outer machine shell; supporting plates are arranged below the lower cylinder body, servo motors are arranged on the side edges of the supporting plates, the output ends of the servo motors and the supporting plates form a meshing transmission structure through transmission gears, five adsorption tower bodies are installed between the upper supporting plate and the lower supporting plate, and first pore plates are fixed in the adsorption tower bodies. According to the five-tower low-pressure adsorption vacuum analysis oxygen production integrated machine, the vibration compaction parts are arranged in the tower bodies, the vibration compaction parts gradually move downwards along with the gravity influence when molecular sieves are added, vibration is generated under the action of magnetic force, and therefore the particle intervals between the molecular sieves are reduced when the molecular sieves are filled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oxygen generator, in particular to a five-tower low-pressure adsorption vacuum resolution oxygen generator integrated machine. BACKGROUND

[0002] The pressure swing adsorption oxygen production technology has experienced iteration and upgrading from high-pressure adsorption (PSA) to normal-pressure adsorption vacuum desorption (VSA), and then to low-pressure adsorption vacuum desorption (VPSA). The VPSA technology has become the mainstream direction of current industrial oxygen production due to its low energy consumption and advanced process. The core of the VPSA technology is to selectively adsorb nitrogen and other impurities under low pressure by using molecular sieve, and to realize efficient desorption by using a vacuum pump, thereby continuously producing 80%-95% of oxygen-rich gas.

[0003] For example, a molecular sieve adsorption tower for an oxygen generator with publication number CN207614594U includes a tower cylinder, a molecular sieve arranged in the tower cylinder, and a first flow distribution plate. The molecular sieve is arranged above the first flow distribution plate. The first flow distribution plate and the bottom wall and side wall of the tower cylinder form a first space, and the first flow distribution plate is provided with uniformly distributed first air holes. A spring is arranged in the second space, and the two ends of the spring abut against the top wall of the tower cylinder and the second flow distribution plate.

[0004] The existing molecular sieve adsorption tower for an oxygen generator has the following technical problems: the spring inside the tower cylinder is used to compress the molecular sieve during use. However, during actual use, the molecular sieve inside the tower cylinder is inconvenient to vibrate and compact during filling, so that the spring can provide compression force, but cannot minimize the particle size interval between the molecular sieves, thereby affecting the overall adsorption effect when the particle size interval of the molecular sieves is large.

[0005] Therefore, we propose a five-tower low-pressure adsorption vacuum resolution oxygen generator integrated machine to solve the above problems. SUMMARY

[0006] The present application aims to provide a five-tower low-pressure adsorption vacuum resolution oxygen generator integrated machine to solve the problem of the existing molecular sieve adsorption tower for an oxygen generator on the market, which is inconvenient to vibrate and compact the molecular sieve during filling inside the tower cylinder during actual use, so that the spring can provide compression force, but cannot minimize the particle size interval between the molecular sieves, thereby affecting the overall adsorption effect when the particle size interval of the molecular sieves is large.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a five-tower low-pressure adsorption vacuum resolution oxygen generation integrated machine, comprising an outer casing and a protective top cover installed on the upper end of the outer casing, the side of the protective top cover is provided with an oxygen outlet, the inside of the outer casing is installed with an upper cylinder body and a lower cylinder body distributed upward and downward, and the lower side of the lower cylinder body is provided with a support plate, the side of the support plate is provided with a servo motor, and the output end of the servo motor and the support plate form a meshing transmission structure through a transmission gear, five adsorption tower bodies are installed between the two support plates upward and downward, the inside of the adsorption tower body is fixed with a first hole plate, the upper side of the first hole plate is provided with a compression hole plate, the compression hole plate is fixed in the inside of the adsorption tower body through bolts, the middle part of the first hole plate is fixed with a guide column, and a vibration compacting part is installed on the guide column, the vibration compacting part moves downward under the influence of the gravity of the added molecular sieve and generates vibration effect under the action of magnetic force to vibrate and compact the added molecular sieve.

[0008] Preferably, the first hole plate and the compression hole plate are parallel distributed, and a plurality of fine holes are formed on the first hole plate and the compression hole plate.

[0009] By adopting the above technical scheme, the fine holes on the first hole plate and the compression hole plate facilitate the normal circulation of compressed gas.

[0010] Preferably, the vibration compacting part comprises a second hole plate installed on the guide column, the second hole plate is connected with the first hole plate through an adjusting spring, the upper end side of the second hole plate is fixed with a limiting vertical plate, the side of the limiting vertical plate facing the center of the adsorption tower body is fixed with a flow resistance block, the inside of the second hole plate is provided with a first air cavity, the inside of the first air cavity is installed with a piston rod, the first air cavity is connected with the inside of the limiting vertical plate through a pipeline, one end of the piston rod close to the guide column is fixed with a first magnetic block, the piston rod is connected with the second hole plate through an auxiliary spring, and the inside of the flow resistance block is connected with a beating plate through an embedded spring.

[0011] By adopting the above technical scheme, the beating plate inside the flow resistance block can be reset and rebounded after moving.

[0012] Preferably, the second hole plate can move vertically along the guide column, and the flow resistance blocks on the limiting vertical plates on both sides of the upper end of the second hole plate are distributed in a staggered manner.

[0013] By adopting the above technical scheme, the flow resistance blocks distributed in a staggered manner on the limiting vertical plates can partially block the air flowing in the adsorption tower body, thereby prolonging the flow time of the air in the adsorption tower body.

[0014] Preferably, the piston rod is wrapped with a sealing ring at the end away from the first magnetic block, and the magnetic property of the first magnetic block is opposite to that of the second magnetic block inside the guide column, and the piston rod can slide inside the first air cavity.

[0015] By using the above technical scheme, the sealing property of the piston rod when moving inside the first air cavity can be improved through the sealing ring at the end of the piston rod.

[0016] Preferably, the guide column is made of stainless steel.

[0017] By using the above technical scheme, the magnetic force of the second magnetic block inside the guide column on the first magnetic block at the end of the piston rod is not affected.

[0018] Preferably, the limiting vertical plate and the flow blocking block are both hollow, and the inner cavities of the two are connected to each other, the end face of the hitting plate is initially attached to the inner wall of the flow blocking block, the hitting plate is also wrapped with a sealing ring, and the hitting plate and the flow blocking block form an elastic telescopic structure through the built-in spring.

[0019] By using the above technical scheme, the flow blocking block can be impacted and vibrated through the reciprocating movement of the hitting plate inside the flow blocking block, so that the surrounding molecular sieve is vibrated more tightly.

[0020] Preferably, the lower end side of the second hole plate is fixed with a plug-in magnetic force rod, the lower end of the first hole plate is fixed with a sleeve socket, the inside of the sleeve socket is connected with a magnetic metal base plate through a clamping spring, the upper side of the magnetic metal base plate is provided with a pressure sensor fixed at the lower end of the first hole plate, and the pressure sensor is connected with an alarm system.

[0021] By using the above technical scheme, when the pressure sensor is extruded by the magnetic metal base plate, the pressure signal can be transmitted to the alarm system, which is used to remind that the height of the internal molecular sieve is too low.

[0022] Preferably, the plug-in magnetic force rod at the lower end of the second hole plate can pass through the first hole plate and be inserted into the sleeve socket, and the plug-in magnetic force rod can generate a magnetic attraction force after touching the magnetic metal base plate.

[0023] By using the above technical scheme, through the adsorption of the plug-in magnetic force rod and the magnetic metal base plate, the magnetic metal base plate can be synchronously moved by the plug-in magnetic force rod after the second hole plate moves upward.

[0024] Compared with the prior art, the beneficial effects of the application are that: the five-tower low-pressure adsorption vacuum resolution oxygen integrated machine is provided with a vibration compacting part inside the tower body, which gradually moves downward under the influence of gravity when the molecular sieve is added, and vibrates under the action of magnetic force, thereby reducing the particle spacing between the molecular sieves during the filling of the molecular sieves; 1. The second hole plate is provided, and when the height of the molecular sieve is reduced due to pulverization during use, the second hole plate is connected with the first hole plate through the adjusting spring, so that even if the height of the molecular sieve is reduced after pulverization, the second hole plate will reset under the action of the adjusting spring, so that the second hole plate and the compacting hole plate always compact the molecular sieve, and a plurality of flow resistance blocks are distributed in the limiting vertical plate, so that the flow rate of the gas flow in the adsorption tower body can be slowed down; 2. The second hole plate is provided, and when the height of the molecular sieve is reduced due to pulverization during use, the second hole plate is connected with the first hole plate through the adjusting spring, so that even if the height of the molecular sieve is reduced after pulverization, the second hole plate will reset under the action of the adjusting spring, so that the second hole plate and the compacting hole plate always compact the molecular sieve, and a plurality of flow resistance blocks are distributed in the limiting vertical plate, so that the flow rate of the gas flow in the adsorption tower body can be slowed down; 3. The pressure sensor is provided, and as the molecular sieve is pulverized, the movement of the second hole plate can drive the magnetic metal base plate to move synchronously through the plug-in magnetic rod, until the magnetic metal base plate moves to press the pressure sensor above, and the pressure sensor can transmit a signal to the alarm system after pressing, so as to warn and remind when the height of the molecular sieve is too low, so as to avoid that the height of the molecular sieve is too low, the bed volume is reduced, the effective adsorption time is insufficient when the air passes through, the nitrogen molecules cannot be fully adsorbed, the oxygen separation efficiency is reduced, and the oxygen purity is difficult to reach the standard. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a front perspective structure schematic view of the application; Figure 2 It is a structure schematic view of the upper cylinder body and the lower cylinder body of the application; Figure 3 It is a structure schematic view of the transmission gear and the adsorption tower body of the application; Figure 4 It is a structure schematic view of the adsorption tower body and the compacting hole plate of the application; Figure 5 It is a structure schematic view of the first hole plate and the guide column of the application; Figure 6 It is a structure schematic view of the guide column and the second magnetic block of the application; Figure 7 It is a structure schematic view of the second hole plate and the plug-in magnetic rod of the application; Figure 8 It is a structure schematic view of the limiting vertical plate and the beating plate of the application; Figure 9The schematic view of the built-in spring structure of the striking plate of the application; Figure 10 The schematic view of the built-in spring structure of the striking plate of the application Figure 7 The schematic view of the enlarged structure at A in the application.

[0026] In the figure: 1, outer casing; 2, protective top cover; 3, oxygen port; 4, upper cylinder body; 5, lower cylinder body; 6, support plate; 7, servo motor; 8, transmission gear; 9, adsorption tower body; 10, first hole plate; 11, compression hole plate; 12, guide column; 13, vibrating compacting part; 131, second hole plate; 132, limiting vertical plate; 133, resistance block; 134, first air cavity; 135, piston rod; 136, first magnetic block; 137, auxiliary spring; 138, striking plate; 139, built-in spring; 14, adjusting spring; 15, second magnetic block; 16, plug-in magnetic force rod; 17, sleeve socket; 18, magnetic metal base plate; 19, clamping spring; 20, pressure sensor. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the application.

[0028] Embodiment one: please refer to Figures 1-10The existing molecular sieve adsorption tower of an oxygen generator machine is compressed by springs inside the tower drum when in use. However, the molecular sieve inside the tower drum is inconvenient to vibrate and compact when filled, so that the spring can provide a compression force, but cannot minimize the particle size interval between the molecular sieve, thereby affecting the overall adsorption effect when the particle size interval of the molecular sieve is large. In order to solve the technical problem, the following technical content is disclosed in the embodiment. A five-tower low-pressure adsorption vacuum resolution oxygen generation integrated machine comprises an outer casing 1 and a protective top cover 2 installed on the upper end of the outer casing 1. An oxygen outlet 3 is arranged on the side of the protective top cover 2. An upper cylinder 4 and a lower cylinder 5 are arranged in the outer casing 1. A support plate 6 is arranged below the lower cylinder 5. A servo motor 7 is arranged on the side of the support plate 6. The output end of the servo motor 7 and the support plate 6 are connected through a transmission gear 8 to form a meshing transmission structure. Five adsorption tower bodies 9 are arranged between the upper and lower support plates 6. A first hole plate 10 is fixed in the adsorption tower body 9. A compression hole plate 11 is arranged above the first hole plate 10. The compression hole plate 11 is fixed in the adsorption tower body 9 through bolts. A guide column 12 is fixed in the middle of the first hole plate 10. A vibration compacting part 13 is arranged on the guide column 12. The vibration compacting part 13 is affected by the gravity of the added molecular sieve and moves downward and vibrates under the action of magnetic force to compact the added molecular sieve. The first hole plate 10 and the compression hole plate 11 are arranged in parallel. A plurality of holes are arranged on the first hole plate 10 and the compression hole plate 11. The vibration compacting part 13 comprises a second hole plate 131 arranged on the guide column 12. The second hole plate 131 is connected with the first hole plate 10 through an adjusting spring 14. Limiting vertical plates 132 are fixed on the upper end sides of the second hole plate 131. Flow resistance blocks 133 are fixed on the sides of the limiting vertical plates 132 facing the center of the adsorption tower body 9. First air cavities 134 are arranged in the second hole plate 131. Piston rods 135 are arranged in the first air cavities 134. The first air cavities 134 are connected with the interiors of the limiting vertical plates 132 through pipelines. First magnetic blocks 136 are fixed on one end of the piston rod 135 close to the guide column 12. The piston rod 135 is connected with the second hole plate 131 through an auxiliary spring 137. The interiors of the flow resistance blocks 133 are connected with beating plates 138 through built-in springs 139. The second hole plate 131 can move vertically along the guide column 12. The flow resistance blocks 133 on the limiting vertical plates 132 on the two sides of the upper end of the second hole plate 131 are arranged in a staggered manner. The end of the piston rod 135 away from the first magnetic block 136 is wrapped with a sealing ring. The magnetism of the first magnetic block 136 is opposite to that of a second magnetic block 15 in the interior of the guide column 12. The piston rod 135 can slide in the first air cavity 134. The guide column 12 is evenly provided with a plurality of second magnetic blocks 15. The guide column 12 is made of stainless steel. The interiors of the limiting vertical plates 132 and the flow resistance blocks 133 are hollow structures and the interior cavities thereof are connected with each other.In its initial state, the end face of the striking plate 138 is in contact with the inner wall of the flow-blocking block 133, and the circumference of the striking plate 138 is also wrapped with a sealing ring. Furthermore, the striking plate 138, through its built-in spring 139 and the flow-blocking block 133, forms an elastic telescopic structure.

[0029] When filling the molecular sieve inside the adsorption tower 9, the molecular sieve is gradually added into the adsorption tower 9. As the number of molecular sieve particles increases, pressure is applied to the second orifice plate 131, causing the second orifice plate 131 to move downwards. When the second orifice plate 131 moves, the first magnetic block 136 at the end of the piston rod 135 inside the first gas chamber 134 approaches the second magnetic block 15 inside the guide column 12. The magnetic attraction of the second magnetic block 15 to the first magnetic block 136 causes the piston rod 135 to move towards the guide column 12. After the piston rod 135 moves, it can use the pipeline to limit the vertical plate 132 and the flow obstruction. The airflow inside block 133 is extracted. At this time, the negative pressure causes the striking plate 138 to move away from the guide post 12. As the second orifice plate 131 continues to move downwards, the first magnetic block 136 at the end of the piston rod 135 moves away from the second magnetic block 15 inside the guide post 12. The piston rod 135 resets and rebounds under the action of the auxiliary spring 137. After the piston rod 135 resets, the striking plate 138 inside the flow-blocking block 133 also rebounds under the action of the built-in spring 139. The reset striking plate 138 then impacts and vibrates the flow-blocking block 133, thereby vibrating the surrounding molecular sieve particles. To achieve a more compact structure, after the molecular sieve is filled, the clamping plate 11 is placed inside the adsorption tower 9 and fixed with bolts, thus compacting the molecular sieve using the clamping plate 11. When oxygen production is required, a vacuum compressor unit is installed inside the outer casing 1. The vacuum compressor unit consists of an upper cylinder 4 and a lower cylinder 5. The upper cylinder 4 provides positive pressure to supply gas to the adsorption tower 9, while the lower cylinder 5 provides negative pressure for evacuating nitrogen. Furthermore, based on the molecular sieve's characteristic of "high-pressure adsorption and low-pressure desorption," the negative pressure in the lower cylinder 5 ensures more thorough regeneration of the molecular sieve. Based on VPSA technology, compared to PSV technology... This technique ensures thorough regeneration of the molecular sieve and higher oxygen purity. As the molecular sieve pulverizes and its height decreases during use, the second orifice plate 131 is connected to the first orifice plate 10 via the adjusting spring 14. Therefore, even if the molecular sieve pulverizes and its height decreases, the second orifice plate 131 will reset under the action of the adjusting spring 14, so that the second orifice plate 131 and the pressing orifice plate 11 always press the molecular sieve. Furthermore, multiple flow-blocking blocks 133 are staggered on the limiting vertical plates 132 on both sides above the second orifice plate 131. By using the flow-blocking blocks 133, the flow rate of the airflow inside the adsorption tower 9 can be slowed down, making the adsorption more complete.

[0030] The technical content disclosed in this embodiment is a further improvement based on the above-mentioned embodiment one. The technical content disclosed in this embodiment is as follows, Figure 7 and Figure 10 As shown in the figure, the lower end side of the second hole plate 131 is fixed with a plug-in magnetic rod 16, and the lower end of the first hole plate 10 is fixed with a sleeve 17, the inside of the sleeve 17 is connected with a magnetic metal base plate 18 through a clamping spring 19, and the upper side of the magnetic metal base plate 18 is provided with a pressure sensor 20 fixed at the lower end of the first hole plate 10, the pressure sensor 20 is connected with the alarm system, the plug-in magnetic rod 16 at the lower end of the second hole plate 131 can be inserted into the sleeve 17 through the first hole plate 10, and the plug-in magnetic rod 16 can generate magnetic attraction force after touching the magnetic metal base plate 18.

[0031] When the molecular sieve inside the adsorption tower body 9 is filled, the second hole plate 131 can be pressed as the number of molecular sieve particles increases, at this time, the second hole plate 131 moves downward, after the second hole plate 131 moves downward, the plug-in magnetic rod 16 at the lower end can pass through the first hole plate 10 and extend into the inside of the sleeve 17, when the molecular sieve filling is completed, the plug-in magnetic rod 16 and the magnetic metal base plate 18 touch and attract each other, when the molecular sieve is pulverized subsequently, causing the second hole plate 131 to gradually move upward under the action of the adjusting spring 14, the movement of the second hole plate 131 can drive the magnetic metal base plate 18 to move synchronously by using the plug-in magnetic rod 16, until the magnetic metal base plate 18 moves to press the pressure sensor 20 above, after the pressure sensor 20 is pressed, the signal can be transmitted to the alarm system, so as to warn when the height of the molecular sieve is too low, avoiding that the height of the molecular sieve is too low, which will reduce the bed volume, so that the effective adsorption time of air passing through is insufficient, nitrogen molecules cannot be fully adsorbed, the oxygen separation efficiency is reduced, and the oxygen purity is difficult to reach the standard.

[0032] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0033] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A five-tower low-pressure adsorption vacuum resolution oxygen generation integrated machine, comprising an outer casing (1) and a protective top cover (2) installed on the upper end of the outer casing (1), the side of the protective top cover (2) is provided with an oxygen outlet (3), the inside of the outer casing (1) is installed with an upper cylinder body (4) and a lower cylinder body (5) distributed in an up-down manner, and the lower side of the lower cylinder body (5) is provided with a supporting plate (6), the side of the supporting plate (6) is provided with a servo motor (7), and the output end of the servo motor (7) and the supporting plate (6) constitute a meshing transmission structure through a transmission gear (8), and five adsorption tower bodies (9) are installed between the two supporting plates (6) in an up-down manner, characterized in that: The inside of the adsorption tower body (9) is fixed with a first hole plate (10), and a pressing hole plate (11) is arranged above the first hole plate (10), the pressing hole plate (11) is fixed in the inside of the adsorption tower body (9) through bolts, the middle part of the first hole plate (10) is fixed with a guide column (12), and a vibrating compacting part (13) is installed on the guide column (12), the vibrating compacting part (13) is affected by gravity and moves downwards under the influence of the gravity of the added molecular sieve, and a vibrating effect is generated under the action of the magnetic force to vibrate and compact the added molecular sieve.

2. The five-column low-pressure adsorption vacuum resolution oxygen generation integrated machine according to claim 1, characterized in that: The first hole plate (10) and the pressing hole plate (11) are in parallel distribution, and a plurality of fine holes are formed in the first hole plate (10) and the pressing hole plate (11).

3. The five-column low-pressure adsorption vacuum resolution oxygen generation integrated machine according to claim 1, characterized in that: The vibrating compacting part (13) comprises a second hole plate (131) installed on the guide column (12), the second hole plate (131) is connected with the first hole plate (10) through an adjusting spring (14), and the upper end side of the second hole plate (131) is fixed with a limiting vertical plate (132), the limiting vertical plate (132) is fixed with a flow resistance block (133) on the side facing the center of the adsorption tower body (9), a first air cavity (134) is formed in the inside of the second hole plate (131), and a piston rod (135) is installed in the inside of the first air cavity (134), the first air cavity (134) is in communication with the inside of the limiting vertical plate (132) through a pipeline, the one end of the piston rod (135) close to the guide column (12) is fixed with a first magnetic block (136), and the piston rod (135) is connected with the second hole plate (131) through an auxiliary spring (137), and the inside of the flow resistance block (133) is connected with a beating plate (138) through an embedded spring (139).

4. The five-column low-pressure adsorption vacuum resolution oxygen generation integrated machine according to claim 3, characterized in that: The second hole plate (131) can move in the vertical direction along the guide column (12), and the flow resistance blocks (133) on the limiting vertical plates (132) on both sides of the upper end of the second hole plate (131) are in staggered distribution.

5. The five-column low-pressure adsorption vacuum resolution oxygen generation integrated machine according to claim 3, characterized in that: The one end of the piston rod (135) away from the first magnetic block (136) is wrapped with a sealing ring in the circumferential direction, the magnetism of the first magnetic block (136) is opposite to that of a second magnetic block (15) in the inside of the guide column (12), and the piston rod (135) can slide in the inside of the first air cavity (134).

6. The five-column low-pressure adsorption vacuum resolution oxygen generation integrated machine according to claim 3, characterized in that: A plurality of second magnetic blocks (15) are uniformly distributed in the inside of the guide column (12), and the guide column (12) is made of stainless steel.

7. The five-column low-pressure adsorption vacuum resolution oxygen generation integrated machine according to claim 3, characterized in that: The limiting vertical plate (132) and the flow resistance block (133) are both provided with a hollow structure, and the inside cavities of the limiting vertical plate (132) and the flow resistance block (133) are in communication with each other, the end face of the beating plate (138) is in initial state and is in close contact with the inner wall of the flow resistance block (133), the circumferential direction of the beating plate (138) is also wrapped with a sealing ring, and the beating plate (138) and the flow resistance block (133) constitute an elastic expansion structure through the embedded spring (139).

8. The five-column low-pressure adsorption vacuum resolution oxygen generation integrated machine according to claim 3, characterized in that: The lower end side of the second hole plate (131) is fixed with a plug-in magnetic pole (16), and the lower end of the first hole plate (10) is fixed with a sleeve socket (17), the inside of the sleeve socket (17) is connected with a magnetic metal base plate (18) through a clamping spring (19), and the upper side of the magnetic metal base plate (18) is provided with a pressure sensor (20) fixed on the lower end of the first hole plate (10), and the pressure sensor (20) is connected with an alarm system.

9. The five-column low-pressure adsorption vacuum resolution oxygen generation integrated machine according to claim 8, characterized in that: The plug-in magnetic pole (16) at the lower end of the second hole plate (131) can be inserted into the sleeve socket (17) through the first hole plate (10), and the plug-in magnetic pole (16) can generate a magnetic attraction force on the magnetic metal base plate (18) after touching the magnetic metal base plate (18).

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