Medical molecular sieve oxygen production system capable of continuously producing oxygen at high pressure

Abstract

The invention belongs to the technical field of molecular sieve oxygen production equipment, particularly relates to a medical molecular sieve oxygen production system capable of continuously producing oxygen at high pressure, and aims to solve the problems that when one molecular sieve tower needs to be overhauled, oxygen production operation cannot be carried out, and zeolite molecular sieves cannot be rapidly discharged and replaced. Comprising an air compressor, an activated carbon filter, a refrigerated dryer, a precision filter and an air buffer tank which are sequentially communicated through pipelines, and a first connecting pipe is fixed to the top of the air buffer tank; according to the present invention, the two adsorption bins in the first adsorption box and the second adsorption box are alternately used so as to continuously produce oxygen for 24 h, and when the zeolite molecular sieve in one of the adsorption bins is overhauled, the other two corresponding adsorption bins can continuously and alternately produce oxygen.

Description

Technical Field

[0001] The invention relates to the technical field of molecular sieve oxygen production equipment, and in particular to a medical molecular sieve oxygen production system for sustainable high-pressure oxygen production. Background Art

[0002] The application of medical molecular sieve oxygen production system in the medical industry mainly utilizes the pressure swing adsorption characteristics of molecular sieve, that is, at room temperature and pressure, using air as raw material and zeolite molecular sieve as adsorbent, the zeolite molecular sieve has the characteristics of increasing the adsorption capacity of nitrogen when pressurized and decreasing the adsorption capacity of nitrogen when depressurized, forming a cycle of pressurized adsorption and decompression desorption, so that about 21% of oxygen in the air is separated from 78% of nitrogen and 1% of other gases to produce oxygen.

[0003] However, the existing technology still has some significant shortcomings when using zeolite molecular sieves to produce oxygen: 1. Although two molecular sieve towers are usually used alternately to produce oxygen to improve efficiency, once one of the molecular sieve towers fails and needs to be repaired or replaced with the zeolite molecular sieve, the other molecular sieve tower will not be able to continue to produce oxygen independently, which will undoubtedly have a negative impact on the overall oxygen production efficiency.

[0004] 2. The zeolite molecular sieve is placed inside the molecular sieve tower, and due to the large size of the molecular sieve tower, when the zeolite molecular sieve needs to be replaced, the discharge and replacement process becomes quite cumbersome and time-consuming, which further limits the operating efficiency of the oxygen production system.

[0005] In view of the above problems, the present invention document proposes a sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system. Summary of the invention

[0006] The purpose of the present invention is to solve the existing shortcomings that when one of the molecular sieve towers needs to be repaired, oxygen production operations cannot be carried out and the zeolite molecular sieve cannot be quickly discharged and replaced, and to propose a sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system, comprising an air compressor, an activated carbon filter, a refrigerated dryer, a precision filter and an air buffer tank, wherein the air compressor, the activated carbon filter, the refrigerated dryer, the precision filter and the air buffer tank are sequentially connected through pipelines, a first connecting pipe is fixed to the top of the air buffer tank, a junction box is fixed to one end of the first connecting pipe, second connecting pipes are fixed to both sides of the junction box, and a placement rack is provided on the side of the junction box away from the air buffer tank; It also includes a first adsorption box and a second adsorption box, and the first adsorption box and the second adsorption box are both fixed on the top of the placement rack, and the top of the first adsorption box and the second adsorption box are fixed with the same oxygen buffer tank for collecting the oxygen prepared in the first adsorption box and the second adsorption box; Two partitions, the two partitions are respectively fixed in the first adsorption box and the second adsorption box, the first adsorption box and the second adsorption box are formed with two adsorption bins through the partitions, the adsorption bins contain zeolite molecular sieves for adsorbing nitrogen in the air, two discharge pipes are fixed at the bottom of the first adsorption box and the second adsorption box, and the multiple discharge pipes are respectively connected to the corresponding adsorption bins, and the outer walls of the multiple discharge pipes are provided with valves; An alternating structure is arranged in the first adsorption box and the second adsorption box, and is used to alternately inject air into the two adsorption bins in the first adsorption box and the second adsorption box; Two sets of air guide structures are respectively arranged on the top of the first adsorption box and the second adsorption box, and are used to guide the air in the corresponding adsorption bin into the oxygen buffer tank; The exhaust structure is arranged between the first adsorption box and the second adsorption box, and is used to discharge and collect the nitrogen adsorbed in the adsorption chamber.

[0008] In a possible design, the alternating structure includes two conversion cylinders, the two conversion cylinders are respectively fixed in two partitions, the bottoms of the two conversion cylinders are respectively fixedly connected to the bottom inner walls of the first adsorption box and the second adsorption box, the two sides of the conversion cylinder located in the first adsorption box are respectively provided with a first air hole and a second air hole, the two sides of the conversion cylinder located in the second adsorption box are respectively provided with a third air hole and a fourth air hole, and the first air hole, the second air hole, the third air hole and the fourth air hole correspond to the corresponding adsorption bins, respectively, the two conversion cylinders are respectively sealed and rotatably connected with a first rotating cylinder and a second rotating cylinder, and the bottom ends of the first rotating cylinder and the second rotating cylinder are respectively sealed and rotatably passed through the first adsorption box and the second adsorption box and extend to the bottom of the placement rack, a first rotating cylinder is provided on one side with a first air outlet, and the first air outlet In coordination with the first air hole and the second air hole, a second air outlet is provided on one side of the second rotating cylinder, and the second air outlet is matched with the third air hole and the fourth air hole, and is used to alternately inject air into the corresponding adsorption bin, and the second air outlet is arranged at 90° to the first air outlet, and one end of the two second connecting tubes away from the junction box extends into the first rotating cylinder and the second rotating cylinder respectively, and the two second connecting tubes are rotatably connected to the first rotating cylinder and the second rotating cylinder respectively; when the first rotating cylinder and the second rotating cylinder rotate synchronously by 90°, the first air outlet and the second air outlet are matched with the first air hole, the second air hole, the third air hole and the fourth air hole in turn, so that the air in the junction box can be alternately injected into the two adsorption bins in the first adsorption box and the second adsorption box in turn for oxygen production, and oxygen can be produced uninterruptedly 24 hours a day.

[0009] In a possible design, the alternating structure also includes a worm gear that rotates under the placement rack through a base, a driving motor is fixed to the bottom of the placement rack, and the output shaft coupling of the driving motor is fixedly connected to one end of the worm gear. The outer walls of the first rotating cylinder and the second rotating cylinder are fixedly sleeved with a worm wheel located under the placement rack, and the worm wheel is meshed with the worm gear. The cooperation between the worm gear and the worm wheel can synchronously drive the first rotating cylinder and the second rotating cylinder to rotate, so as to make the first air outlet and the second air outlet alternately connected to the corresponding adsorption bin.

[0010] In a possible design, the air guide structure includes two air outlet pipes, both of which are fixed to the top of the first adsorption box and are respectively connected to the corresponding adsorption bins, a fixing ring is fixed in the air outlet pipe, a plurality of guide rods are fixed between the top of the fixing ring and the inner wall of the top of the air outlet pipe, the outer walls of the plurality of guide rods are slidably sleeved with the same closing plate, and the closing plate is used to close the fixing ring, a plurality of springs are fixed between the top of the closing plate and the inner wall of the top of the air outlet pipe, and the springs are sleeved on the outer walls of the guide rods, the springs are used to make the closing plate close the fixing ring under a certain pressure, and the bottom of the closing plate is fixed A rubber plug is fixed to seal the inner circular hole of the fixed ring. A third connecting pipe is fixed to the top of the two outlet pipes. One end of the two third connecting pipes is connected to the oxygen buffer tank. The two third connecting pipes are provided with an oxygen output control valve. When the pressure in the adsorption bin reaches a certain level, the oxygen pushes the rubber plug and the sealing plate upward to release the sealing of the fixed ring. Then the oxygen output control valve is opened, and the oxygen is injected into the oxygen buffer tank through the third connecting pipe. The oxygen buffer tank injects the oxygen into the oxygen sterilizing filter to further sterilize and filter the oxygen. Finally, the gas collecting pipe injects the oxygen into the collection equipment.

[0011] In a possible design, the exhaust structure includes a nitrogen collecting pipe arranged between the first adsorption box and the second adsorption box, the nitrogen collecting pipe is fixed on the top of the placement rack, nitrogen discharge pipes are fixed on both sides of the first adsorption box and the second adsorption box, the nitrogen discharge pipes are connected to the corresponding adsorption bins, one end of the four nitrogen discharge pipes are connected to the nitrogen collection pipe, and a second solenoid valve is provided on the four nitrogen discharge pipes, and the nitrogen desorbed from the zeolite molecular sieve in the corresponding adsorption bin is discharged into the nitrogen collection pipe through the nitrogen discharge pipe.

[0012] In a possible design, a connecting pipe is fixed between the two air outlet pipes located in the same group of air guide structures, and the two ends of the connecting pipe are respectively connected to the two air outlet pipes, so as to equalize the pressure inside two adjacent adsorption bins. The connecting pipe is located below the fixed ring, and a first solenoid valve is provided on the connecting pipe.

[0013] In a possible design, an oxygen sterilizing filter is fixed to one side of the oxygen buffer tank through a pipeline for sterilizing and filtering oxygen, and a gas collecting pipe is provided on the side of the oxygen sterilizing filter away from the oxygen buffer tank for transporting oxygen to a collection device.

[0014] In a possible design, pressure gauges are fixed on both sides of the top of the first adsorption box and the second adsorption box, and the probes of the four pressure gauges extend into the corresponding adsorption bins respectively to detect the pressure in the adsorption bins.

[0015] In a possible design, the outer walls of the first adsorption box and the second adsorption box are each provided with two rectangular holes, and the four rectangular holes are respectively connected to the corresponding adsorption bins, and glass plates are fixedly embedded in the four rectangular holes for checking the color of the zeolite molecular sieve in the adsorption bin, so as to facilitate the timely replacement of the zeolite molecular sieve at a later time; the color of the zeolite molecular sieve will gradually change from blue to gray, and the zeolite molecular sieve needs to be replaced when the color of the zeolite molecular sieve is observed to change to dark gray through the glass plate.

[0016] In a possible design, both the first adsorption box and the second adsorption box are provided with a shaking structure for accelerating the discharge of the zeolite molecular sieve; The shaking structure includes two rotating plates, and the two rotating plates are respectively located in two adjacent adsorption bins, and the sides of the two rotating plates that are away from each other are rotatably connected to sliding seats, and the two sliding seats are respectively slidably connected to the bottom inner walls of the two adsorption bins, and the bottoms of the two rotating plates are rotatably connected to plug rods, and the bottom ends of the two plug rods are sealed and slidable through the first adsorption box and extend to the bottom of the placement rack. Four hemispheres are fixed on the top of the worm gear located below the first adsorption box, and the hemispheres cooperate with the plug rod to drive the plug rod to move back and forth up and down, and the reciprocating movement of the plug rod drives the rotating plate to rotate reciprocally, which is used to guide the zeolite molecular sieve toward the discharge pipe; the worm drives the worm gear to rotate, and the hemispheres on the top of the worm gear push the plug rod to move up, and the plug rod drives the rotating plate to rotate, and the rotating plate can guide the internal zeolite molecular sieve to one side, so that the zeolite molecular sieve can be discharged through the discharge pipe, thereby accelerating the discharge efficiency.

[0017] Beneficial effect: In the present invention, the first air hole and the second air hole are respectively provided on both sides of the conversion cylinder located in the first adsorption box, and the third air hole and the fourth air hole are respectively provided on both sides of the conversion cylinder located in the second adsorption box, and the first rotating cylinder and the second rotating cylinder are respectively sealed and rotatably connected in the two conversion cylinders, a first air outlet is provided on one side of the first rotating cylinder, and a second air outlet is provided on one side of the second rotating cylinder, and a worm gear is fixedly sleeved on the outer walls of the two first rotating cylinders; when the first rotating cylinder and the second rotating cylinder rotate synchronously by 90°, the first air outlet and the second air outlet are sequentially matched with the first air hole, the second air hole, the third air hole and the fourth air hole, so that the air in the junction box can be alternately injected into the two adsorption bins in the first adsorption box and the second adsorption box in turn to produce oxygen, and oxygen can be produced uninterruptedly 24 hours a day; In the present invention, a fixing ring is fixed in the air outlet pipe, a plurality of guide rods are fixed between the top of the fixing ring and the inner wall of the top of the air outlet pipe, the outer wall sliding sleeves of the plurality of guide rods are provided with a same closing plate, and a same connecting pipe is fixed between two adjacent air outlet pipes; when the pressure in the adsorption bin reaches a certain level, oxygen pushes the rubber plug and the closing plate upward to release the sealing of the fixing ring, and then the oxygen output control valve is opened, and the oxygen is injected into the oxygen buffer tank through the third connecting pipe, and the oxygen buffer tank injects the oxygen into the oxygen sterilizing filter to further sterilize and filter the oxygen, and finally the gas collecting pipe injects the oxygen into the collecting device, and the two adjacent adsorption bins can be pressure-equalized through the connecting pipe; In the present invention, the two rotating plates are rotatably connected to one side away from each other with a sliding seat, and the two sliding seats are slidably connected to the bottom inner walls of the two adsorption bins respectively. The bottoms of the two rotating plates are rotatably connected to an insertion rod, and four hemispheres are fixed on the top of the worm gear; the hemispheres on the top of the worm gear push the insertion rod to move upward, and the insertion rod pushes the rotating plate to rotate. The rotating plate can guide the internal zeolite molecular sieve to one side, so that the zeolite molecular sieve can be discharged through the discharge pipe, thereby accelerating the discharge efficiency.

[0018] In the present invention, by alternately using the two adsorption chambers in the first adsorption box and the second adsorption box, oxygen production can be carried out uninterruptedly for 24 hours, and when the zeolite molecular sieve in one of the adsorption chambers is under maintenance, the other two corresponding adsorption chambers can continue to produce oxygen alternately to ensure that the oxygen production is not interrupted. In addition, when the zeolite molecular sieve is replaced, the hemispherical driving rod can drive the rotating plate to rotate reciprocally to accelerate the discharge of the zeolite molecular sieve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system provided in Example 1 of the present invention; Figure 2A schematic diagram of the three-dimensional structure of a placement rack and a first adsorption box of a sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system provided in Example 1 of the present invention from a first perspective; Figure 3 A schematic diagram of the three-dimensional structure of a placement rack and a first adsorption box of a sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system provided in Example 1 of the present invention from a second perspective; Figure 4 A schematic diagram of a three-dimensional cross-sectional structure of a first adsorption box and a first adsorption box of a sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system provided in Example 1 of the present invention; Figure 5 A schematic three-dimensional cross-sectional structure diagram of a first adsorption box, a conversion cylinder and a partition of a sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system provided in Example 1 of the present invention; Figure 6 A schematic diagram of a three-dimensional exploded cross-sectional structure of a conversion cylinder, a first rotating cylinder, and a second rotating cylinder of a medical molecular sieve oxygen production system for sustainable high-pressure oxygen production provided in Example 1 of the present invention; Figure 7 A schematic diagram of the three-dimensional structure of an outlet pipe, a connecting pipe and an oxygen buffer tank of a sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system provided in Example 1 of the present invention; Figure 8 A schematic cross-sectional view of an outlet pipe and a fixing ring of a medical molecular sieve oxygen production system for sustainable high-pressure oxygen production provided in Example 1 of the present invention; Fig. 9 A partial cross-sectional structural schematic diagram of a first adsorption box and a placement rack of a sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system provided in Example 2 of the present invention; Fig.10 for Fig. 9 The enlarged structural diagram at A in the middle; Fig.11 This is a schematic diagram of a top view of the cross-sectional structure of a first adsorption box and a partition of a medical molecular sieve oxygen production system for sustainable high-pressure oxygen production provided in Example 2 of the present invention.

[0020] In the figure: 1, air compressor; 2, activated carbon filter; 3, refrigerated dryer; 4, precision filter; 5, air buffer tank; 6, first connecting pipe; 7, junction box; 8, second connecting pipe; 9, placement rack; 10, first adsorption box; 11, second adsorption box; 12, partition; 13, adsorption bin; 14, glass plate; 15, conversion cylinder; 16, first air hole; 17, second air hole; 18, first rotating cylinder; 19, first air outlet; 20, second rotating cylinder; 21, third air hole; 22, fourth air hole; 23, worm gear; 24. Worm; 25. Drive motor; 26. Air outlet pipe; 27. Fixed ring; 28. Guide rod; 29. ​​Closing plate; 30. Rubber plug; 31. Spring; 32. Third connecting pipe; 33. Oxygen output control valve; 34. Oxygen buffer tank; 35. Oxygen sterilizing filter; 36. Gas collecting pipe; 37. Connecting pipe; 38. First solenoid valve; 39. Nitrogen discharge pipe; 40. Second solenoid valve; 41. Nitrogen collecting pipe; 42. Barometer; 43. Second air outlet; 44. Rotating plate; 45. Sliding seat; 46. Insert rod; 47. Hemisphere. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example 1 Reference Figure 1 , oxygen production system, which is used in the field of molecular sieve oxygen production equipment. The entire oxygen production system consists of an air compressor 1, an activated carbon filter 2, a refrigerated dryer 3, a precision filter 4 and an air buffer tank 5. These components are connected in sequence through pipes to ensure that the air can flow smoothly through each processing stage. The air compressor 1 is responsible for compressing the external air, the activated carbon filter 2 is used to remove impurities and odors in the air, the refrigerated dryer 3 further reduces the humidity in the air, and the precision filter 4 finely filters the air. Finally, the air is sent to the air buffer tank 5 for buffering and storage.

[0023] Reference Figure 1 and Figure 2 A first connecting pipe 6 is fixed on the top of the air buffer tank 5, and the other end of the first connecting pipe 6 is connected to a junction box 7. Two second connecting pipes 8 are fixed on both sides of the junction box 7, respectively, for conveying the treated air to the subsequent oxygen production components. A placement rack 9 is provided on the side of the junction box 7 away from the air buffer tank 5, for supporting and fixing the subsequent oxygen production components.

[0024] Reference Figure 2 and Figure 4On the top of the placement rack 9, two adsorption boxes are fixed, namely the first adsorption box 10 and the second adsorption box 11. The tops of the first adsorption box 10 and the second adsorption box 11 are connected to an oxygen buffer tank 34 for collecting and storing oxygen prepared from the adsorption boxes. Partitions 12 are fixed inside the first adsorption box 10 and the second adsorption box 11 to separate each adsorption box into two independent adsorption bins 13. Zeolite molecular sieves are placed in each adsorption bin 13. This material can selectively adsorb nitrogen in the air to separate oxygen.

[0025] Reference Figure 3 In order to control the replacement and cleaning of the zeolite molecular sieve in each adsorption bin 13, two discharge pipes are fixed at the bottom of each adsorption box, which are respectively connected to the corresponding adsorption bins 13, and a valve is provided on the outer wall of each discharge pipe so as to open or close it when needed.

[0026] Reference Figure 4 - Figure 6 In order to achieve the alternating injection of air, an alternating structure is provided in the system. This structure includes two conversion cylinders 15, which are respectively fixed in the two partitions 12 and fixedly connected to the bottom inner wall of the adsorption box. On both sides of each conversion cylinder 15, there are air holes, which correspond to the corresponding adsorption bins 13. A first rotating cylinder 18 and a second rotating cylinder 20 are respectively connected in a sealed rotation in the two conversion cylinders 15, and the bottom ends of the first rotating cylinder 18 and the second rotating cylinder 20 are respectively sealed and rotated to pass through the corresponding adsorption box and extend to the bottom of the placement rack 9. A first air outlet 19 is provided on one side of the first rotating cylinder 18, which cooperates with the first air outlet 16 and the second air outlet 17; a second air outlet 43 is provided on one side of the second rotating cylinder 20, which cooperates with the third air outlet 21 and the fourth air outlet 22. These two air outlets cooperate with the corresponding air holes to alternately inject air into the corresponding adsorption bins 13. It is worth noting that the second air outlet 43 and the first air outlet 19 are arranged at 90 degrees to ensure that they can be accurately connected to the corresponding air holes when the rotating drum rotates.

[0027] Reference Figure 6 The ends of the two second connecting pipes 8 away from the junction box 7 extend into the first rotating cylinder 18 and the second rotating cylinder 20 respectively, and are rotatably connected with the first rotating cylinder 18 and the second rotating cylinder 20. In this way, when the first rotating cylinder 18 and the second rotating cylinder 20 rotate synchronously by 90 degrees, the first air outlet 19 and the second air outlet 43 will be connected with the first air hole 16, the second air hole 17, the third air hole 21 and the fourth air hole 22 in sequence, so that the air in the junction box 7 is alternately injected into the two adsorption chambers 13 in the first adsorption box 10 and the second adsorption box 11 for oxygen production.

[0028] Reference Figure 6 In order to drive the synchronous rotation of the first rotating cylinder 18 and the second rotating cylinder 20, the alternating structure also includes a worm 24 that rotates under the placement frame 9 through a base. A driving motor 25 is fixed at the bottom of the placement frame 9, and its output shaft is fixedly connected to one end of the worm 24 through a coupling. On the outer walls of the first rotating cylinder 18 and the second rotating cylinder 20, a worm wheel 23 located under the placement frame 9 is fixedly sleeved, and these worm wheels 23 are meshed with the worm 24.

[0029] Specifically, when the driving motor 25 is started and drives the worm 24 to rotate, the worm will synchronously drive the first rotating cylinder 18 and the second rotating cylinder 20 to rotate through the worm gear 23, so that the first air outlet 19 and the second air outlet 43 are alternately connected to the corresponding adsorption bin 13.

[0030] Reference Figure 2 , Figure 7 and Figure 8 In addition, two sets of air guide structures are provided in the system, which are respectively arranged at the top of the first adsorption box 10 and the second adsorption box 11, and are used to introduce the oxygen-rich air in the corresponding adsorption bin 13 into the oxygen buffer tank 34. The design of the air guide structure is crucial for the derivation of oxygen and the regulation of pressure. Specifically, first, two air outlet pipes 26 are firmly mounted on the top of the first adsorption box 10 (the other two air outlet pipes 26 are firmly mounted on the top of the second adsorption box 11), and each air outlet pipe 26 is connected to the corresponding adsorption bin 13. In this way, the oxygen generated in the adsorption bin 13 can be exported through the air outlet pipe 26.

[0031] Reference Figure 8 A fixing ring 27 is fixed inside each air outlet pipe 26; the top of the fixing ring 27 is connected to the inner wall of the top of the air outlet pipe 26 by a plurality of guide rods 28; these guide rods 28 not only play a supporting role, but also provide a track for the sliding of the closing plate 29; the closing plate 29 is slidably mounted on the outer wall of the plurality of guide rods 28, and is used to close the fixing ring 27 when needed.

[0032] Reference Figure 8 In order to ensure that the closing plate 29 can automatically close the fixing ring 27 under appropriate pressure, a plurality of springs 31 are fixed between the top of the closing plate 29 and the inner wall of the top of the gas outlet pipe 26. These springs 31 are sleeved on the outer wall of the guide rod 28. When the pressure in the adsorption chamber 13 increases to a certain level, oxygen will push the rubber plug 30 and the closing plate 29 upward, thereby releasing the sealing of the fixing ring 27.

[0033] Reference Figure 8A rubber plug 30 is fixed at the bottom of the closing plate 29 to block the inner circular hole of the fixing ring 27 when the closing plate 29 moves downward. In this way, when the oxygen pressure in the adsorption chamber 13 is insufficient, the rubber plug 30 will keep the fixing ring 27 blocked to prevent oxygen leakage.

[0034] Reference Figure 7 and Figure 8 The top ends of the four gas outlet pipes 26 are all fixed with third connecting pipes 32, and one end of these third connecting pipes 32 is connected to the oxygen buffer tank 34. On the third connecting pipe 32, an oxygen output control valve 33 is provided. When the closing plate 29 is pushed upward by oxygen and the closing of the fixing ring 27 is released, the oxygen output control valve 33 can be opened to allow oxygen to be injected into the oxygen buffer tank 34 through the third connecting pipe 32. The oxygen buffer tank 34 further injects oxygen into the oxygen sterilizing filter 35 to sterilize and filter the oxygen. Finally, the treated oxygen is injected into the collection device through the gas collecting pipe 36 for medical use.

[0035] Reference Figure 2 and Figure 4 At the same time, an exhaust structure is also provided, which is located between the first adsorption box 10 and the second adsorption box 11, and is used to discharge and collect the nitrogen adsorbed in the adsorption bin 13. The oxygen production system also includes an exhaust structure for discharging the nitrogen desorbed from the zeolite molecular sieve in the adsorption bin 13. Specifically, a nitrogen collection pipe 41 is provided between the first adsorption box 10 and the second adsorption box 11, and the nitrogen collection pipe 41 is fixed on the top of the placement rack 9. Nitrogen discharge pipes 39 are fixed on both sides of the first adsorption box 10 and the second adsorption box 11, and these nitrogen discharge pipes 39 are connected to the corresponding adsorption bins 13. One end of the four nitrogen discharge pipes 39 is connected to the nitrogen collection pipe 41, and a second solenoid valve 40 is provided on each nitrogen discharge pipe 39. By controlling the switch of the second solenoid valve 40, the nitrogen desorbed in the corresponding adsorption bin 13 can be discharged into the nitrogen collection pipe 41 for unified treatment.

[0036] Reference Figure 7 In order to further improve the stability and efficiency of the system, a connecting pipe 37 is fixed between the two outlet pipes 26 in the same group of air guide structures. The two ends of the connecting pipe 37 are respectively connected to the two outlet pipes 26, which are used to equalize the pressure inside the two adjacent adsorption bins 13. The connecting pipe 37 is located below the fixing ring 27, and a first solenoid valve 38 is provided on the connecting pipe 37. By controlling the switch of the first solenoid valve 38, the pressure balance inside the two adjacent adsorption bins 13 can be adjusted to ensure the stable operation of the system.

[0037] Reference Figure 7On one side of the oxygen buffer tank 34, an oxygen sterilizing filter 35 is fixedly installed through a pipeline. The main function of this oxygen sterilizing filter 35 is to sterilize and filter the oxygen to ensure that the output oxygen is pure and sterile. On the side of the oxygen sterilizing filter 35 away from the oxygen buffer tank 34, a gas collecting pipe 36 is set. The function of the gas collecting pipe 36 is to transport the oxygen that has been sterilized and filtered to the collection device for subsequent use.

[0038] Reference Figure 2 At both sides of the top of the first adsorption box 10 and the second adsorption box 11, barometers 42 are fixedly installed. The probes of the four barometers 42 extend into the corresponding adsorption bins 13 respectively, and are used to monitor the pressure changes in the adsorption bins 13 in real time, so that the pressure state during the adsorption process can be accurately grasped.

[0039] Reference Figure 4 Two rectangular holes are respectively arranged on the outer walls of the first adsorption box 10 and the second adsorption box 11, and these four rectangular holes are respectively connected to the four adsorption bins 13. In each rectangular hole, a glass plate 14 is fixedly embedded. These glass plates 14 allow the color change of the zeolite molecular sieve inside the adsorption bin 13 to be visually observed. During the use of the zeolite molecular sieve, its color will gradually change from blue to gray. When the color of the zeolite molecular sieve is observed to change to dark gray through the glass plate 14, it is known that a new zeolite molecular sieve needs to be replaced.

[0040] Through the above specific implementation methods, a sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system was successfully constructed. Through the ingenious design of the gas guide structure and the exhaust structure, the effective extraction of oxygen and the emission treatment of nitrogen were achieved. It also has efficient oxygen production and purification capabilities and a convenient zeolite molecular sieve replacement mechanism, which greatly improves the practicality and reliability of the system.

[0041] Example 2 refer to Fig. 9 - Fig.11, improved on the basis of Example 1: a shaking structure for accelerating the discharge of zeolite molecular sieve is set inside the first adsorption box 10 and the second adsorption box 11. The following is a detailed introduction to this shaking structure using the first adsorption box 10 as an example (the shaking structure in the second adsorption box 11 adopts the same setting as the first adsorption box 10). This shaking structure is mainly composed of two rotating plates 44, which are respectively located inside two adjacent adsorption bins 13. The two rotating plates 44 are rotatably connected to the sliding seat 45 on the side away from each other, and the two sliding seats 45 are respectively slidably connected to the bottom inner wall of the two adsorption bins 13. At the same time, the bottoms of the two rotating plates 44 are rotatably connected to the plug rod 46, and the bottom ends of the two plug rods 46 are sealed and slidable through the first adsorption box 10 and extend to the bottom of the placement rack 9. Here, it is noted that four hemispheres 47 are fixed to the top of the worm wheel 23 located below the first adsorption box 10. These hemispheres 47 cooperate with the plug rod 46 to drive the plug rod 46 to move up and down. When the plunger 46 reciprocates, it drives the rotating plate 44 to reciprocate, thereby guiding the zeolite molecular sieve toward the discharge pipe. The realization of this process depends on the rotation of the worm 24 driving the worm wheel 23.

[0042] Specifically, when the worm wheel 23 rotates, the hemispherical body 47 on the top thereof pushes the insertion rod 46 upward, and the insertion rod 46 then pushes the rotating plate 44 to rotate. In this way, the rotating plate 44 can guide the zeolite molecular sieve inside to one side, so that the zeolite molecular sieve can be discharged more easily through the discharge pipe, thereby accelerating the discharge efficiency.

[0043] A method for using a sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system comprises the following steps: S1, air compressor 1 compresses the air and injects it into activated carbon filter 2, refrigerated dryer 3, precision filter 4 and air buffer tank 5 in sequence. After activated carbon filter 2 removes water and oil in the air, refrigerated dryer 3 cools down the compressed high-temperature air and removes part of the moisture. Precision filter 4 removes oil droplets, oil mist and oil vapor in the compressed air. After de-oiling and de-watering, the purified air enters air buffer tank 5. Air buffer tank 5 injects air into junction box 7 through first connecting pipe 6; S2. In the initial state, the first air outlet 19 in the first rotating cylinder 18 is aligned with the first air hole 16, the second air outlet 43 in the second rotating cylinder 20 is located between the third air hole 21 and the fourth air hole 22, and the second air outlet 43 is closed. At this time, the air in the junction box 7 enters the corresponding adsorption chamber 13 through the second connecting pipe 8, the first rotating cylinder 18, the first air outlet 19 and the first air hole 16, and the nitrogen in the air is adsorbed by the zeolite molecular sieve in the adsorption chamber 13. When the pressure in the adsorption chamber 13 reaches 0.56Mpa, the oxygen pushes the rubber plug 30 and the sealing plate 29 to move upward, releasing the sealing of the fixing ring 27, and then the oxygen output control valve 33 is opened, and the oxygen is injected into the oxygen buffer tank 34 through the third connecting pipe 32. The oxygen buffer tank 34 injects the oxygen into the oxygen sterilizing filter 35 to further sterilize and filter the oxygen. Finally, the gas collecting pipe 36 injects the oxygen into the collection device; S3, when the zeolite molecular sieve in the adsorption bin 13 adsorbs nitrogen to saturation, the driving motor 25 drives the worm 24 to rotate, and the worm 24 drives the two worm wheels 23 to rotate at the same time, and the worm wheels 23 drive the first rotating cylinder 18 and the second rotating cylinder 20 to rotate 90° clockwise synchronously. At this time, the first air outlet 19 is located between the first air hole 16 and the second air hole 17 and is closed, and the second air outlet 43 is aligned with the third air hole 21. The air in the junction box 7 enters the corresponding adsorption bin 13 in the second adsorption box 11 through the second connecting pipe 8, the second air outlet 43 and the third air hole 21. Repeat step S2 to perform nitrogen adsorption and oxygen collection operations. After the first air outlet 19 is closed, the first solenoid valve 38 on the first adsorption box 10 is opened, and the two adsorption bins 13 in the first adsorption box 10 are connected. The two adsorption bins 13 are pressurized. After the pressure equalization is completed, the pressure is reduced, and the closing plate 29 and the rubber plug 30 close the fixing ring 27 under the elastic force of the spring 31; S4, then open the corresponding second solenoid valve 40 on one side of the first adsorption box 10, at this time, the nitrogen adsorbed by the zeolite molecular sieve in one of the adsorption bins 13 in the first adsorption box 10 is injected into the nitrogen collecting pipe 41 through the nitrogen discharge pipe 39, and the nitrogen is collected through the nitrogen collecting pipe 41; in addition, as the worm 24 drives the first rotating cylinder 18 and the second rotating cylinder 20 to rotate synchronously through the worm gear 23, the first air outlet 19 is sequentially connected with the first air hole 16, the second air hole 17, and the second air outlet 43 is sequentially connected with the third air hole 21 and the fourth air hole 22, so that the two adsorption bins 13 in the first adsorption box 10 and the second adsorption box 11 can be operated alternately, and when the zeolite molecular sieve in one of the adsorption bins 13 in the first adsorption box 10 (or the second adsorption box 11) needs to be replaced and repaired, the zeolite molecular sieves in the two adsorption bins 13 in the second adsorption box 11 (or the first adsorption box 10) can continue to perform oxygen production operations; S5. When the zeolite molecular sieve in the adsorption bin 13 needs to be discharged, the worm 24 drives the worm wheel 23 to rotate, and the hemisphere 47 on the top of the worm wheel 23 pushes the insertion rod 46 to move upward (and the worm wheel 23 can drive the hemisphere 47 to reciprocate at a small angle, so that the hemisphere 47 drives the insertion rod 46 to reciprocate up and down, and when rotating at a small angle, it does not affect the injection of air into the corresponding adsorption bin 13), the insertion rod 46 drives the rotating plate 44 to rotate, and the rotating plate 44 can guide the internal zeolite molecular sieve to one side, so that the zeolite molecular sieve can be discharged through the discharge pipe, thereby accelerating the discharge efficiency.

[0044] However, as is well known to those skilled in the art, the working principles and wiring methods of the air compressor 1, activated carbon filter 2, refrigerated dryer 3, precision filter 4, air buffer tank 5, oxygen output control valve 33, first solenoid valve 38, drive motor 25, second solenoid valve 40 and barometer 42 are commonplace, and are conventional means or common knowledge, and will not be elaborated herein. Those skilled in the art may make any optional selections according to their needs or convenience.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system, comprising an air compressor (1), an activated carbon filter (2), a refrigerated dryer (3), a precision filter (4) and an air buffer tank (5), wherein the air compressor (1), the activated carbon filter (2), the refrigerated dryer (3), the precision filter (4) and the air buffer tank (5) are sequentially connected through a pipeline, characterized in that: A first connecting pipe (6) is fixed on the top of the air buffer tank (5), a junction box (7) is fixed to one end of the first connecting pipe (6), second connecting pipes (8) are fixed to both sides of the junction box (7), and a placement rack (9) is provided on a side of the junction box (7) away from the air buffer tank (5); It also includes a first adsorption box (10) and a second adsorption box (11), and the first adsorption box (10) and the second adsorption box (11) are both fixed on the top of the placement rack (9), and the same oxygen buffer tank (34) is fixed on the top of the first adsorption box (10) and the second adsorption box (11) for collecting the oxygen prepared in the first adsorption box (10) and the second adsorption box (11); Two partitions (12), the two partitions (12) are respectively fixed in the first adsorption box (10) and the second adsorption box (11), the first adsorption box (10) and the second adsorption box (11) are each formed with two adsorption bins (13) through the partitions (12), the adsorption bins (13) contain zeolite molecular sieves for adsorbing nitrogen in the air, two discharge pipes are fixed at the bottom of the first adsorption box (10) and the second adsorption box (11), and the plurality of discharge pipes are respectively connected to the corresponding adsorption bins (13), and valves are provided on the outer walls of the plurality of discharge pipes; An alternating structure is arranged in the first adsorption box (10) and the second adsorption box (11), and is used to alternately inject air into the two adsorption bins (13) in the first adsorption box (10) and the second adsorption box (11); Two sets of air guide structures are respectively arranged on the top of the first adsorption box (10) and the second adsorption box (11), and are used to guide the air in the corresponding adsorption bin (13) into the oxygen buffer tank (34); The exhaust structure is arranged between the first adsorption box (10) and the second adsorption box (11) and is used to discharge and collect nitrogen adsorbed in the adsorption bin (13).

2. A sustainable high-pressure oxygen production medical molecular sieve oxygen production system according to claim 1, characterized in that: The alternating structure comprises two conversion cylinders (15), the two conversion cylinders (15) are respectively fixed in two partitions (12), the bottoms of the two conversion cylinders (15) are respectively fixedly connected to the bottom inner walls of the first adsorption box (10) and the second adsorption box (11), the two sides of the conversion cylinder (15) located in the first adsorption box (10) are respectively provided with a first air vent (16) and a second air vent (17), the two sides of the conversion cylinder (15) located in the second adsorption box (11) are respectively provided with a third air vent (21) and a fourth air vent (22), and the first air vent (16), the second air vent (17), the third air vent (21) and the fourth air vent (22) correspond to the corresponding adsorption bins (13), and the two conversion cylinders (15) are respectively sealed and rotatably connected with a first rotating cylinder (18) and a second rotating cylinder (20), and the first rotating cylinder (18) and the second rotating cylinder (20) are respectively provided with a first rotating cylinder (18) and a second rotating cylinder (20). ) are respectively sealed and rotated to pass through the first adsorption box (10) and the second adsorption box (11) and extend to the bottom of the placement rack (9); a first air outlet (19) is provided on one side of the first rotating cylinder (18), and the first air outlet (19) cooperates with the first air hole (16) and the second air hole (17); a second air outlet (43) is provided on one side of the second rotating cylinder (20), and the second air outlet (43) is adapted to the third air hole (21) and the fourth air hole (22) for alternately injecting air into the corresponding adsorption bin (13); the second air outlet (43) and the first air outlet (19) are arranged at 90 degrees to each other; one end of the two second connecting tubes (8) away from the junction box (7) respectively extends into the first rotating cylinder (18) and the second rotating cylinder (20), and the two second connecting tubes (8) are respectively rotatably connected to the first rotating cylinder (18) and the second rotating cylinder (20).

3. A sustainable high-pressure oxygen production medical molecular sieve oxygen production system according to claim 2, characterized in that: The alternating structure also includes a worm (24) that is rotated below the placement rack (9) through a base, a driving motor (25) is fixed to the bottom of the placement rack (9), an output shaft coupling of the driving motor (25) is fixedly connected to one end of the worm (24), and the outer walls of the first rotating cylinder (18) and the second rotating cylinder (20) are both fixedly sleeved with a worm wheel (23) located below the placement rack (9), and the worm wheel (23) is meshed with the worm (24), and the cooperation between the worm (24) and the worm wheel (23) can synchronously drive the first rotating cylinder (18) and the second rotating cylinder (20) to rotate, so as to make the first air outlet (19) and the second air outlet (43) alternately communicate with the corresponding adsorption bin (13).

4. A sustainable high-pressure oxygen production medical molecular sieve oxygen production system according to claim 1, characterized in that: The air guide structure comprises two air outlet pipes (26), the two air outlet pipes (26) are fixed on the top of the first adsorption box (10) and are respectively connected to the corresponding adsorption bins (13), a fixing ring (27) is fixed inside the air outlet pipe (26), a plurality of guide rods (28) are fixed between the top of the fixing ring (27) and the inner wall of the top of the air outlet pipe (26), the outer walls of the plurality of guide rods (28) are slidably sleeved with a same closing plate (29), and the closing plate (29) is used to close the fixing ring (27), the top of the closing plate (29) and the top of the air outlet pipe (26) are slidably sleeved with a same closing plate (29), and the closing plate (29) is used to close the fixing ring (27), and the top of the closing plate (29) and the top of the air outlet pipe (26) are slidably sleeved with a same closing plate (29), and the closing plate (29) is used to close the fixing ring (27), and the top of the closing plate (29) and the top of the air outlet pipe (26) are slidably sleeved with a same closing plate (29), and the closing plate (29) and the top of the air outlet pipe (26) are slidably sleeved with a same closing plate (29), and the closing plate (29) and the inner wall ... A plurality of springs (31) are fixed between the inner walls of the two gas outlet pipes (26), and the springs (31) are sleeved on the outer wall of the guide rod (28). The springs (31) are used to make the closing plate (29) close the fixing ring (27) under a certain pressure. A rubber plug (30) is fixed to the bottom of the closing plate (29) for blocking the inner circular hole of the fixing ring (27). A third connecting pipe (32) is fixed to the top of each of the two gas outlet pipes (26). One end of each of the two third connecting pipes (32) is connected to the oxygen buffer tank (34). Each of the two third connecting pipes (32) is provided with an oxygen output control valve (33).

5. A sustainable high-pressure oxygen production medical molecular sieve oxygen production system according to claim 1, characterized in that: The exhaust structure comprises a nitrogen collecting pipe (41) arranged between the first adsorption box (10) and the second adsorption box (11); the nitrogen collecting pipe (41) is fixed on the top of the placement rack (9); nitrogen discharge pipes (39) are fixed on both sides of the first adsorption box (10) and the second adsorption box (11); the nitrogen discharge pipes (39) are connected to the corresponding adsorption bins (13); one end of the four nitrogen discharge pipes (39) are connected to the nitrogen collection pipe (41); a second solenoid valve (40) is arranged on the four nitrogen discharge pipes (39); and nitrogen desorbed from the zeolite molecular sieve in the corresponding adsorption bins (13) is discharged into the nitrogen collection pipe (41) through the nitrogen discharge pipes (39).

6. A sustainable high-pressure oxygen production medical molecular sieve oxygen production system according to claim 4, characterized in that: A common connecting pipe (37) is fixed between the two air outlet pipes (26) located in the same group of air guide structures, and both ends of the connecting pipe (37) are respectively connected to the two air outlet pipes (26) for equalizing the pressure inside two adjacent adsorption bins (13). The connecting pipe (37) is located below the fixing ring (27), and a first solenoid valve (38) is provided on the connecting pipe (37).

7. A sustainable high-pressure oxygen production medical molecular sieve oxygen production system according to claim 6, characterized in that: An oxygen sterilizing filter (35) is fixed to one side of the oxygen buffer tank (34) via a pipeline for sterilizing and filtering oxygen. A gas collecting pipe (36) is provided on the side of the oxygen sterilizing filter (35) away from the oxygen buffer tank (34) for transporting oxygen to a collection device.

8. The sustainable high-pressure oxygen-producing medical molecular sieve oxygen production system according to claim 1, characterized in that: Pressure gauges (42) are fixed on both sides of the top of the first adsorption box (10) and the second adsorption box (11), and probes of the four pressure gauges (42) extend into corresponding adsorption bins (13) respectively, for detecting the pressure in the adsorption bins (13).

9. A sustainable high-pressure oxygen production medical molecular sieve oxygen production system according to claim 8, characterized in that: The outer walls of the first adsorption box (10) and the second adsorption box (11) are each provided with two rectangular holes, and the four rectangular holes are respectively connected to the corresponding adsorption bins (13), and glass plates (14) are fixedly embedded in the four rectangular holes for checking the color of the zeolite molecular sieve in the adsorption bin (13), so as to facilitate timely replacement of the zeolite molecular sieve at a later stage.

10. A sustainable high-pressure oxygen production medical molecular sieve oxygen production system according to claim 3, characterized in that: The first adsorption box (10) and the second adsorption box (11) are both provided with a shaking structure for accelerating the discharge of the zeolite molecular sieve; The shaking structure comprises two rotating plates (44), and the two rotating plates (44) are respectively located in two adjacent adsorption bins (13). The two rotating plates (44) are rotatably connected to a sliding seat (45) on the side away from each other. The two sliding seats (45) are respectively slidably connected to the bottom inner walls of the two adsorption bins (13). The bottoms of the two rotating plates (44) are rotatably connected to an insertion rod (46). The bottom ends of the two insertion rods (46) are sealed and slidably penetrate the first adsorption box (10) and extend to the bottom of the placement rack (9). Four hemispheres (47) are fixed to the top of the worm wheel (23) located below the first adsorption box (10), and the hemispheres (47) cooperate with the insertion rod (46) to drive the insertion rod (46) to move back and forth up and down. The reciprocating movement of the insertion rod (46) drives the rotating plate (44) to rotate back and forth, so as to guide the zeolite molecular sieve toward the discharge pipe.

Images