A PSA oxygen generator that is convenient to use

Abstract

The present invention relates to a PSA oxygen generator that is convenient to use, including a base, a first adsorption tower, a second adsorption tower, an exhaust tank, and an oxygen tank. The first adsorption tower, the second adsorption tower, and the exhaust tank are all provided with an air outlet and an air inlet. The air inlets of the first adsorption tower and the second adsorption tower are both connected with pipelines. The two pipelines are detachably connected to a first pipeline control device, and the first pipeline control device is connected with an air inlet pipe to realize the air intake control of the first adsorption tower and the second adsorption tower. A second pipeline control device with both ends detachably connected to the two pipelines is arranged below the first pipeline control device, and the second pipeline control device is connected with the exhaust tank to realize the nitrogen discharge control of the first adsorption tower and the second adsorption tower; the present invention has the advantage of convenient maintenance.

Description

Technical Field

[0001] The present invention belongs to the technical field of PSA oxygen generators, and particularly relates to a PSA oxygen generator that is convenient to use. Background Art

[0002] The PSA oxygen generator is also called a pressure swing adsorption oxygen generation device. Under normal temperature and pressure conditions, the PSA oxygen generator uses the PSA special molecular sieve in two adsorption towers to selectively adsorb impurities such as nitrogen, carbon dioxide, and water in the air, so as to obtain oxygen with a relatively high purity (93% ± 2). Since the pressure swing adsorption oxygen generation device entered industrialization, the technology has developed rapidly. Due to its strong competitiveness in the medium and low production range and occasions with not too high purity requirements in terms of price performance ratio, it has been widely used in fields such as steelmaking flux assistance, blast furnace oxygen enrichment, pulp bleaching, glass furnace kilns, and wastewater treatment.

[0003] In the prior art, the two adsorption towers in the PSA oxygen generator of model XTFY-60 produced by Suzhou Xite High-Purity Gas Equipment Co., Ltd. need to be connected by pipelines, and the airflow is controlled through valves to extract oxygen. However, during use, when a valve fails, it is not convenient to repair, thus affecting the use. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a PSA oxygen generator that is convenient to use and easy to repair.

[0005] The technical solution of the present invention is as follows:

[0006] A PSA oxygen generator that is convenient to use, including a base, a first adsorption tower, a second adsorption tower, an exhaust tank, and an oxygen tank. The first adsorption tower, the second adsorption tower, and the exhaust tank are all provided with air outlets and air inlets. The air inlets of the first adsorption tower and the second adsorption tower are both connected with pipelines. The two pipelines are detachably connected to a first pipeline control device, and the first pipeline control device is connected with an air inlet pipe to realize the air intake control of the first adsorption tower and the second adsorption tower. A second pipeline control device with both ends detachably connected to the two pipelines is arranged below the first pipeline control device, and the second pipeline control device is connected with the exhaust tank to realize the nitrogen discharge control of the first adsorption tower and the second adsorption tower. The air outlets of the first adsorption tower and the second adsorption tower are detachably connected with a third pipeline control device connected to the oxygen tank through pipelines to realize the oxygen discharge control of the first adsorption tower and the second adsorption tower.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] 1. The present invention realizes the control of the intake air, nitrogen discharge, and oxygen discharge of the first adsorption tower and the second adsorption tower through the first pipeline control device, the second pipeline control device, and the third pipeline control device, thereby facilitating use;

[0009] 2. The present invention uses the first pipeline control device, the second pipeline control device, and the third pipeline control device detachably connected to the pipeline to realize the disassembly, installation, and fixation of the first pipeline control device, the second pipeline control device, and the third pipeline control device, facilitating the maintenance of the first pipeline control device, the second pipeline control device, and the third pipeline control device;

[0010] In summary, the present invention has the advantage of facilitating maintenance.

[0011] Further, the first pipeline control device includes two fixed pipes, a detection device detachably connected inside the fixed pipes, a guide column passing through the detection device, a valve flap located on the guide column, and a driving device for controlling the left - right movement of the guide column. The two fixed pipes are connected to the intake pipe, and the fixed pipes are detachably connected to the pipeline. The pipeline is provided with a sealing ring in contact with the valve flap so that the gas in the fixed pipe no longer enters the pipeline;

[0012] The part of the fixed pipe corresponding to the detection device is provided with a transparent pipe, and one end of the fixed pipe away from the pipeline is closed;

[0013] The driving device and the fixed pipes are both fixed on the first adsorption tower and the second adsorption tower.

[0014] Further, one end of the fixed pipe and one end of the pipeline adjacent to the fixed pipe are both provided with connection rings. The opposite sides of the connection rings are both provided with two or more arc - shaped plates. The width of the arc - shaped plates gradually increases in the clockwise direction along the connection ring. The connection ring is provided with a plug - in hole on one side of the arc - shaped plate. The connection ring is provided with a fixing sleeve. The fixing sleeve is divided into an upper sleeve and a lower sleeve from the center line. The upper sleeve and the lower sleeve are both provided with clamping plates in contact with the opposite sides of the two connection rings. The clamping plates are provided with sliding grooves. The clamping plates are elastically connected with plug - in columns on one side of the sliding grooves. When the fixing sleeve is attached to the outer edge surface of the connection ring and rotated clockwise, the arc - shaped plates enter the sliding grooves, and the plug - in columns gradually align with the plug - in holes as the fixing sleeve rotates and are inserted into the plug - in holes to realize the rotational limit of the fixing sleeve.

[0015] Further, one end of the plug - in column protrudes from the side of the clamping plate away from the connection ring.

[0016] Furthermore, the detection device includes a detection ring detachably fixed to the inner wall of the fixed tube. The detection ring is located at the transparent tube. A ring groove is formed on the side of the detection ring facing the transparent tube, and a filler is filled in the ring groove. A humidity test paper is arranged on the surface of the filler. The humidity test paper is provided with two semi-circular transparent plates, and the transparent plates are attached to the transparent tube. A hole is formed on the side of the detection ring, and the guide post is inserted through the detection ring.

[0017] Furthermore, the driving device includes a fixed cylinder detachably connected to the inner wall of the fixed tube, a threaded column threadedly connected to the fixed cylinder, a first gear disk, a second gear disk engaged with the first gear disk, a telescopic rod connected to the second gear disk away from the first gear disk, and a motor for driving the telescopic rod to rotate. The threaded column is connected to the guide post;

[0018] The threaded column passes through the fixed cylinder and is connected to the first gear disk;

[0019] The telescopic rod is rotationally and hermetically connected to the fixed tube, and the motor drives the second gear disk to rotate through the telescopic rod;

[0020] The motor is fixed on the first adsorption tower and the second adsorption tower.

[0021] Furthermore, the telescopic rod is provided with a connecting column rotatably connected to the fixed tube. The connecting column is dynamically sealed on the fixed tube. The connecting column passes through the fixed tube and is connected to the motor. A handwheel is arranged at one end of the connecting column extending out of the fixed tube.

[0022] Furthermore, a limiting ring is arranged on the inner wall of the fixed tube. The fixed cylinder is inserted into the fixed tube, and the side away from the detection ring abuts against the limiting ring. A toothed ring threadedly connected to the fixed tube is arranged on the side of the detection ring away from the fixed cylinder. The detection ring is provided with a connecting rod connected to the fixed cylinder, and teeth are arranged on the side of the toothed ring away from the detection ring.

[0023] Furthermore, an opening is formed on the fixed tube. A threaded cylinder located on the fixed tube is arranged at the opening. A top rod is fixed in the opening through a plate. The intake pipe is communicated with a shunt pipe. One-way valves are arranged at both ends of the shunt pipe. Mounting sleeves are rotatably connected to both ends of the shunt pipe. When one end of the shunt pipe is inserted into the threaded cylinder, the valve core of the one-way valve is pushed open by the top rod, and the mounting sleeve is threadedly connected to the threaded cylinder.

[0024] Furthermore, the structures of the first pipeline control device, the second pipeline control device, and the third pipeline control device are the same. The fixed tube of the second pipeline control device is communicated with the exhaust tank through a shunt pipe and a connecting pipe. The fixed tube of the third pipeline control device is communicated with the oxygen tank through a shunt pipe and a connecting pipe. Description of the Drawings

[0025] Figure 1Schematic structural diagram of the present invention;

[0026] Figure 2 For the present invention Figure 1 Schematic enlarged sectional structure diagram of part A of the present invention;

[0027] Figure 3 For the present invention Figure 2 Schematic enlarged structure diagram of part B of the present invention;

[0028] Figure 4 For the present invention Figure 2 Schematic enlarged structure diagram of part C of the present invention;

[0029] Figure 5 For the present invention Figure 2 Schematic structure diagram of the toothed ring of the present invention;

[0030] Figure 6 For the present invention Figure 2 Schematic structure diagram of the connecting ring of the present invention;

[0031] Figure 7 For the present invention Figure 2 Schematic structure diagram of the fixing sleeve of the present invention;

[0032] Figure 8 For the present invention Figure 7 Schematic connection structure diagram of the plugging column of the present invention.

[0033] In the figure, 1, the first adsorption tower; 2, the exhaust tank; 3, the inlet pipe; 4, the shunt pipe; 7, the first pipeline control device; 71, the connecting ring; 7101, the arc plate; 7102, the plugging hole; 72, the detection device; 721, the toothed ring; 722, the transparent pipe; 723, the humidity test paper; 724, the filler; 725, the transparent plate; 726, the detection ring; 73, the fixed pipe; 74, the fixing sleeve; 742, the slideway; 743, the plugging column; 744, the clamping plate; 745, the spring; 75, the fixed cylinder; 76, the first toothed disc; 77, the telescopic rod; 78, the motor; 79, the handwheel; 710, the connecting column; 711, the second toothed disc; 712, the limiting ring; 713, the threaded cylinder; 714, the one-way valve; 716, the mounting sleeve; 717, the guiding column; 718, the threaded column; 719, the valve flap; 720, the ejector rod; 8, the fixing plate; 9, the pipeline; 91, the sealing ring; 10, the base; 11, the oxygen tank; 12, the second adsorption tower; 13, the second pipeline control device; 14, the third pipeline control device. Detailed implementation manners

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] As Figures 1-8 shown, a PSA oxygen generator convenient to use includes a base 10, a first adsorption tower 1, a second adsorption tower 12, an exhaust tank 2, and an oxygen tank 11. The first adsorption tower 1, the second adsorption tower 12, and the exhaust tank 2 are all provided with an air outlet and an air inlet. The first adsorption tower 1, the second adsorption tower 12, the exhaust tank 2, and the oxygen tank 11 are all fixed on the base 10 by bolts. The air inlets of the first adsorption tower 1 and the second adsorption tower 12 are both connected with a pipeline 9 through a flange. The two pipelines 9 are both detachably connected to a first pipeline control device 7. The first pipeline control device 7 is connected with an air inlet pipe 3 to realize the air inlet control of the first adsorption tower 1 and the second adsorption tower 12. A second pipeline control device 13 with both ends detachably connected to the two pipelines 9 is arranged below the first pipeline control device 7. The second pipeline control device 13 is connected with the exhaust tank 2 to realize the nitrogen discharge control of the first adsorption tower 1 and the second adsorption tower 12. The air outlets of the first adsorption tower 1 and the second adsorption tower 12 are both detachably connected with a third pipeline control device 14 connected with the oxygen tank 11 through a pipeline 9 to realize the oxygen discharge control of the first adsorption tower 1 and the second adsorption tower 12.

[0036] When in use, the air inlet pipe 3 is sequentially connected with an air tank, a filter, a dryer, and a compressor through pipelines. The compressed air, the dryer, the filter, and the air in the air tank enter the first pipeline control device 7. The first pipeline control device 7 controls the air to enter the first adsorption tower 1 through the pipeline 9. At this time, the second pipeline control device 13 controls the exhaust tank 2 to be no longer connected with the first adsorption tower 1 and the second adsorption tower 12. The first adsorption tower 1 adsorbs nitrogen and discharges oxygen into the oxygen tank 11 through the third pipeline control device 14. When the zeolite molecular sieve in the first adsorption tower 1 can no longer adsorb nitrogen (the situation where the zeolite molecular sieve cannot adsorb nitrogen can be controlled by time), the first pipeline control device 7 controls the air to enter the second adsorption tower 12. The second pipeline control device 13 controls the first adsorption tower 1 to be connected with the exhaust tank 2. The third pipeline control device 14 controls the oxygen tank 11 to be no longer connected with the first adsorption tower 1. The first adsorption tower 1 discharges nitrogen through the exhaust tank 2. At this time, the second adsorption tower 12 works. When the second adsorption tower 12 can no longer adsorb nitrogen, the first adsorption tower 1 can be controlled to work according to the above process.

[0037] In this embodiment, the first pipeline control device 7 includes two fixed pipes 73, a detection device 72 detachably connected inside the fixed pipe 73, a guide post 717 passing through the detection device 72, a valve flap 719 located on the guide post 717, and a driving device for controlling the left and right movement of the guide post 717. The two fixed pipes 73 are communicated with the intake pipe 3. The fixed pipe 73 is detachably connected to the pipeline 9. The pipeline 9 is integrally formed with a sealing ring 91 in contact with the valve flap 719 so that the gas in the fixed pipe 73 no longer enters the pipeline 9. The corresponding part of the fixed pipe 73 and the detection device 72 is connected with a transparent pipe 722 through a thread and a sealing ring. One end of the fixed pipe 73 away from the pipeline 9 is closed. The driving device is fixed on the first adsorption tower 1 and the second adsorption tower 12 through a fixing plate 8. The fixed pipe 73 is fixed on the fixing plate 8 through a flange. When it is necessary to control the communication between the intake pipe 3 and the first adsorption tower 1, the driving device of one of the fixed pipes 73 drives the valve flap 719 through the guide post 717 to no longer contact the sealing ring 91. At this time, air enters the first adsorption tower 1 through the fixed pipe 73 and the pipeline 9. When it is necessary to control the communication between the intake pipe 3 and the second adsorption tower 12, the driving device of the fixed pipe 73 communicating with the first adsorption tower 1 drives the valve flap 719 through the guide post 717 to contact the sealing ring 91. At this time, the intake pipe 3 is no longer communicated with the first adsorption tower 1. The driving device of the other fixed pipe 73 drives the valve flap 719 to no longer contact the sealing ring 91. At this time, the air in the intake pipe 3 enters the second adsorption tower 12. During the air flow, the detection device 72 detects the water content in the air to avoid the situation that the first adsorption tower 1 and the second adsorption tower 12 cannot work due to the high water content in the air. When the first pipeline control device 7 is damaged, the first pipeline control device 7 is removed for repair. After the repair is completed, the first pipeline control device 7 is reconnected to the pipeline 9 again.

[0038] In this embodiment, one end of the fixed tube 73 and one end of the pipe 9 adjacent to the fixed tube 73 are fixed with a connecting ring 71. A sealing ring or O-ring is provided on the side of the connecting ring 71 to ensure the sealing of the connecting ring 71. The opposite sides of the connecting ring 71 are integrally formed with two arc-shaped plates 7101. The width of the arc-shaped plate 7101 gradually increases clockwise along the connecting ring 71. The connecting ring 71 is provided with a plug hole 7102 located on one side of the arc-shaped plate 7101. A fixing sleeve 74 is provided on the connecting ring 71. The fixing sleeve 74 is divided into an upper sleeve and a lower sleeve from the center line. The lower sleeve, the upper sleeve and the lower sleeve are all integrally formed with a clamping plate 744 that contacts the two connecting rings 71 facing away from the sides. The clamping plate 744 is provided with a slideway 742. The clamping plate 744 is provided with a T-shaped hole on one side of the slideway 742. A plug-in column 743 is passed through the hole. The plug-in column 743 is sleeved with a spring 745 that abuts against the hole. One end of the plug-in column 743 protrudes from the side of the clamping plate 744 away from the connecting ring 71. The protruding end of the plug-in column 743 is integrally formed with a pull-out disk located on the side of the clamping plate 744 away from the connecting ring 71, so that the plug-in column 743 cannot be separated from the T When the fixing sleeve 74 is in contact with the outer edge of the connecting ring 71 and rotates clockwise, the arc plate 7101 enters the slideway 742, and the plug post 743 gradually aligns with the plug hole 7102 as the fixing sleeve 74 rotates, and is plugged into the plug hole 7102 to achieve the rotation limit of the fixing sleeve 74; when it is necessary to install the fixing pipe 73, fit the fixing pipe 73 and the connecting ring 71 on the pipe 9, then plug the upper and lower sleeves into the two connecting rings 71, and rotate the fixing sleeve 74 clockwise. At this time, the arc plate 7101 gradually enters the slideway 742, and as the arc plate The width of 7101 is getting larger and larger. During the rotation of the clamping plate 744, the arc plate 7101 is used to push the two connecting rings 71 to fit completely together. During the rotation of the clamping plate 744, the plug-in column 743 is gradually aligned with the plug-in hole 7102. The plug-in column 743 is pushed into the plug-in hole 7102 by the spring 745. At this time, the upper sleeve and the lower sleeve are rotated to the limit position, and the connecting ring 71 is fixed. When the fixing tube 73 needs to be removed, the plug-in column 743 is driven out of the plug-in hole 7102 by pulling out the disk, and then the upper sleeve and the lower sleeve are rotated counterclockwise.

[0039] In this embodiment, the detection device 72 includes a detection ring 726 detachably fixed to the inner wall of the fixed pipe 73. The detection ring 726 is located at the transparent pipe 722. A ring groove is formed on the side of the detection ring 726 facing the transparent pipe 722. The ring groove is filled with a packing 724, which is specifically zeolite molecular sieve. A humidity test paper 723 is arranged on the surface of the packing 724. The humidity test paper 723 can be a water-sensitive color-changing paper, such as a water-writing paper. The humidity test paper 723 is provided with two semi-circular transparent plates 725, and the transparent plates 725 are attached to the transparent pipe 722. A hole is formed on the side of the detection ring 726, and the guide post 717 passes through the detection ring 726. During use, air enters the pipe 9 through the detection ring 726 and the packing 724. During the air flow, when there is more moisture in the air, the packing 724 gradually gets wet, and the humidity test paper 723 absorbs the moisture in the packing 724 and gradually changes color. Personnel can view it through the transparent pipe 722 and the transparent plates 725. When it is necessary to replace the packing 724 or the humidity test paper 723, the detection ring 726 is removed and taken out. Then, after removing the transparent plates 725, the packing 724 and the humidity test paper 723 are replaced. The transparent plates 725 are reinstalled on the detection ring 726, and finally, the detection ring 726 is fixed at the transparent pipe 722 of the fixed pipe 73.

[0040] In this embodiment, the driving device includes a fixed cylinder 75 detachably connected to the inner wall of the fixed pipe 73, a threaded column 718 threadedly connected to the fixed cylinder 75, a first gear disk 76, a second gear disk 711 meshing with the first gear disk 76, a telescopic rod 77 bolted to the second gear disk 711 away from the first gear disk 76, and a motor 78 for driving the telescopic rod 77 to rotate. The threaded column 718 is connected to the guide post 717. The threaded column 718 passes through the fixed cylinder 75 and is connected to the first gear disk 76. The telescopic rod 77 includes a mounting cylinder and an output rod. Guide plates are axially arranged on the side of the output rod. The mounting cylinder is provided with guide grooves for the guide plates to be inserted. The output rod is inserted into the mounting cylinder and is connected to the mounting cylinder by a spring. The second gear disk is connected to the output rod. The telescopic rod 77 is rotationally and sealingly connected to the fixed pipe 73. The output shaft of the motor 78 is connected to the mounting cylinder, and the motor 78 is fixed on the first adsorption tower 1 and the second adsorption tower 12. During use, when it is necessary to control the valve flap 719 to abut against the sealing ring 91, the motor 78 drives the threaded column 718 to rotate clockwise through the telescopic rod 77, the first gear disk 76 and the second gear disk 711. The threaded column 718 rotates clockwise and drives the valve flap 719 to move towards the sealing ring 91 through the guide rod until the valve flap 719 abuts against the sealing ring 91. During the movement of the valve flap 719, the output rod gradually extends out of the mounting cylinder. When it is necessary to control the valve flap 719 to no longer contact the sealing ring 91, the threaded column 718 can be controlled to rotate counterclockwise by the motor 78.

[0041] In this embodiment, a connecting column 710 is fixed to the mounting cylinder of the telescopic rod 77 by bolts. One end of the connecting column 710 extends out of the fixed tube 73. The connecting column 710 is connected to the fixed tube 73 so that the connecting column 710 can rotate. Holes are formed in one end of the connecting column 710 passing through the fixed tube 73 and on the output shaft of the motor 78. The connecting column 710 and the output shaft of the motor 78 are inserted into the holes by a pin. One end of the connecting column 710 extending out of the fixed tube 73 is fixed with a handwheel 79 by bolts. During use, the motor 78 drives the mounting cylinder of the telescopic rod 77 to rotate through the connecting column 710 to ensure power transmission. When it is necessary to urgently control that the valve flap 719 no longer abuts against the sealing ring 91 or the valve flap 719 abuts against the sealing plate, the connecting column 710 can be rotated by the handwheel 79.

[0042] In this embodiment, a limiting ring 712 is adhesively fixed to the inner wall of the fixed tube 73. The fixed cylinder 75 is inserted into the fixed tube, and the side away from the detection ring 726 abuts against the limiting ring 712. An O-ring for contact sealing with the fixed tube 73 is arranged on the side of the fixed cylinder 75. A toothed ring 721 threadedly connected to the fixed tube 73 is arranged on the side of the detection ring 726 away from the fixed cylinder 75. Threaded holes are formed in both the detection ring 726 and the fixed cylinder 75. A connecting rod threaded with the threaded hole of the fixed cylinder 75 is inserted into the threaded hole of the detection ring 726. Teeth are arranged on the side of the toothed ring 721 away from the detection ring 726. During use, when it is necessary to remove the connecting ring 71 and the fixed cylinder 75, a cylinder with teeth is inserted into the fixed cylinder 75 so that the teeth on the cylinder engage with the teeth on the toothed ring 721. Then, the toothed ring 721 is driven to rotate clockwise by the cylinder, so that the toothed ring 721 is no longer threadedly connected to the fixed tube 73. Then, the detection ring 726 and the fixed cylinder 75 are taken out of the fixed tube 73. At this time, the first toothed disc 76 and the second toothed disc 711 are no longer engaged. When it is necessary to install, the connecting rod is threadedly connected to the threaded holes of the fixed cylinder 75 and the detection ring 726. Then, the fixed cylinder 75 and the detection ring 726 are placed into the fixed tube 73. When the fixed cylinder 75 abuts against the limiting ring 712, the first toothed disc 76 and the second toothed disc 711 are engaged. Then, the toothed ring 721 is threadedly connected to the fixed tube 73, thereby realizing the fixation of the detection ring 726 and the fixed cylinder 75.

[0043] In this embodiment, the fixed tube 73 is provided with an opening. A threaded cylinder 713 located on the fixed tube 73 is fixed at the opening. A top rod 720 is fixed in the opening by a plate. The intake pipe 3 is communicated with a shunt pipe 4. Check valves 714 are fixed at both ends of the shunt pipe 4. Both ends of the shunt pipe 4 are rotatably and sealingly connected with mounting sleeves 716. Sealing rings are arranged on the sides of the mounting sleeves 716 in contact with the upper side of the threaded cylinder 713. When one end of the shunt pipe 4 is inserted into the threaded cylinder 713, the valve core of the check valve 714 is pushed open by the top rod 720, and the mounting sleeve 716 is threadedly connected to the threaded cylinder 713.

[0044] When it is necessary to install the fixed pipe 73, align one end of the shunt pipe 4 with the threaded cylinder 713, and then rotate the mounting sleeve 716 clockwise so that the mounting sleeve 716 is threadedly connected to the threaded cylinder 713. At this time, the shunt pipe 4 gradually inserts into the threaded cylinder 713. During the downward movement of the shunt pipe 4, the ejector rod 720 gradually pushes open the valve core of the one-way valve 714. When the mounting sleeve 716 can no longer be rotated clockwise, the connection between the fixed pipe 73 and the shunt pipe 4 is completed. When it is necessary to remove the fixed pipe 73, rotate the mounting sleeve 716 counterclockwise so that the shunt pipe 4 is no longer inserted into the threaded cylinder 713. When the shunt pipe 4 is pulled out of the threaded cylinder 713, the one-way valve 714 closes, and the end of the shunt pipe 4 pulled out of the threaded cylinder 713 no longer exhausts air.

[0045] In this embodiment, the structures of the first pipeline control device 7, the second pipeline control device 13, and the third pipeline control device 14 are the same. The fixed pipe 73 of the second pipeline control device 13 is communicated with the exhaust tank 2 through the shunt pipe 4 and the connecting pipe. The fixed pipe 73 of the third pipeline control device 14 is communicated with the oxygen tank 11 through the shunt pipe 4 and the connecting pipe.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A PSA oxygen generator that is convenient to use, comprising a base, a first adsorption tower, a second adsorption tower, an exhaust tank, and an oxygen tank. The first adsorption tower, the second adsorption tower, and the exhaust tank are all provided with an air outlet and an air inlet, and are characterized in that: The air inlets of the first adsorption tower and the second adsorption tower are both connected with pipelines. The two pipelines are detachably connected to a first pipeline control device, and the first pipeline control device is connected with an air inlet pipe to realize the air inlet control of the first adsorption tower and the second adsorption tower. A second pipeline control device with both ends detachably connected to the two pipelines is arranged below the first pipeline control device, and the second pipeline control device is connected with an exhaust tank to realize the nitrogen discharge control of the first adsorption tower and the second adsorption tower. The air outlets of the first adsorption tower and the second adsorption tower are detachably connected with a third pipeline control device connected to an oxygen tank through pipelines to realize the oxygen discharge control of the first adsorption tower and the second adsorption tower; The first pipeline control device includes two fixed pipes, a detection device detachably connected inside the fixed pipes, a guide post passing through the detection device, a valve flap located on the guide post, and a driving device for controlling the left and right movement of the guide post. The two fixed pipes are connected to the air inlet pipe, and the fixed pipes are detachably connected to the pipelines. The pipelines are provided with sealing rings in contact with the valve flap so that the gas in the fixed pipes no longer enters the pipelines; A transparent pipe is arranged at the part of the fixed pipe corresponding to the detection device, and one end of the fixed pipe far from the pipeline is closed; The driving device and the fixed pipes are both fixed on the first adsorption tower and the second adsorption tower; One end of the fixed pipe and one end of the pipeline adjacent to the fixed pipe are both provided with connecting rings. Both opposite sides of the connecting rings are provided with two or more arc-shaped plates. The width of the arc-shaped plates gradually increases in the clockwise direction along the connecting rings. The connecting rings are provided with inserting holes located on one side of the arc-shaped plates. The connecting rings are provided with fixed sleeves. The fixed sleeves are divided into an upper sleeve and a lower sleeve from the center line. The upper sleeve and the lower sleeve are both provided with clamping plates in contact with the opposite sides of the two connecting rings. The clamping plates are provided with sliding grooves. The clamping plates are elastically connected with inserting posts located on one side of the sliding grooves. When the fixed sleeves are attached to the outer edge surfaces of the connecting rings and rotated clockwise, the arc-shaped plates enter the sliding grooves, and the inserting posts gradually align with the inserting holes and are inserted into the inserting holes as the fixed sleeves rotate to realize the rotational limit of the fixed sleeves.

2. The PSA oxygen generator according to claim 1, wherein: One end of the inserting post protrudes from the side of the clamping plate far from the connecting ring.

3. The PSA oxygen generator according to claim 2, wherein: The detection device includes a detection ring detachably fixed on the inner wall of the fixed pipe. The detection ring is located at the transparent pipe. A ring groove is opened on the side of the detection ring facing the transparent pipe. The ring groove is filled with packing. A humidity test paper is arranged on the surface of the packing. The humidity test paper is provided with two semi-circular transparent plates. The transparent plates are attached to the transparent pipe. A hole is opened on the side of the detection ring, and the guide post is arranged on the detection ring.

4. The PSA oxygen generator convenient for use according to claim 3, wherein: The driving device includes a fixed cylinder detachably connected to the inner wall of the fixed pipe, a threaded post threadedly connected to the fixed cylinder, a first gear disk, a second gear disk engaged with the first gear disk, a telescopic rod connected to the second gear disk far from the first gear disk, and a motor for driving the telescopic rod to rotate. The threaded post is connected to the guide post; The threaded post passes through the fixed cylinder and is connected to the first gear disk; The telescopic rod is rotationally and sealingly connected to the fixed pipe, and the motor drives the second gear disk to rotate through the telescopic rod; The motor is fixed on the first adsorption tower and the second adsorption tower.

5. The PSA oxygen generator according to claim 4, characterized in that: The telescopic rod is provided with a connecting column rotatably connected to the fixed pipe. The connecting column is dynamically sealed on the fixed pipe. The connecting column passes through the fixed pipe and is connected to the motor. One end of the connecting column extending out of the fixed pipe is provided with a handwheel.

6. The portable PSA oxygen generator according to claim 5, wherein: A limiting ring is arranged on the inner wall of the fixed pipe. The fixed cylinder is inserted into the fixed pipe and the side away from the detection ring abuts against the limiting ring. A toothed ring threadedly connected to the fixed pipe is arranged on the side of the detection ring away from the fixed cylinder. The detection ring is provided with a connecting rod connected to the fixed cylinder. Teeth are arranged on the side of the toothed ring away from the detection ring.

7. The portable PSA oxygen generator according to claim 6, wherein: The fixed pipe is provided with an opening. A threaded cylinder located on the fixed pipe is arranged at the opening. A top rod is fixed in the opening through a plate. The intake pipe is communicated with a shunt pipe. One-way valves are arranged at both ends of the shunt pipe. Mounting sleeves are rotatably connected to both ends of the shunt pipe. When one end of the shunt pipe is inserted into the threaded cylinder, the valve core of the one-way valve is pushed open by the top rod. The mounting sleeve is threadedly connected to the threaded cylinder.

8. The portable PSA oxygen generator according to claim 7, wherein: The structures of the first pipeline control device, the second pipeline control device, and the third pipeline control device are the same. The fixed pipe of the second pipeline control device is communicated with the exhaust tank through a shunt pipe and a connecting pipe. The fixed pipe of the third pipeline control device is communicated with the oxygen tank through a shunt pipe and a connecting pipe.

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