Small molecular sieve oxygen generator

Abstract

The invention relates to the technical field of oxygen generators, in particular to a small molecular sieve oxygen generator which comprises a shell and an upper cover arranged on the shell, an air inlet grille and an air outlet grille are arranged on the two sides of the shell respectively, a cooling pipe is arranged in the shell, and a sliding seat is arranged in the shell in a sliding mode; the small molecular sieve oxygen generator further comprises a speed reduction driving mechanism which is arranged in the shell, the small molecular sieve oxygen generator is in threaded connection with the sliding seat through a lead screw of the speed reduction driving mechanism, accurate position adjustment of the sliding seat is achieved, it is ensured that the adjusting grille is overlapped or staggered with the air inlet grille and the air outlet grille according to needs, and therefore the situation that when equipment is stopped, the air inlet grille and the air outlet grille are damaged is avoided. When the equipment is used, wet air intrudes into the shell and the air-dried activated carbon plate, the one-way rotating mechanism is matched with the reciprocating driving mechanism, so that the activated carbon plate achieves position replacement when the equipment is started, and when the equipment is used, the activated carbon plate is subjected to high-temperature air drying through the cooling pipe so as to dehumidify the equipment after the position of the activated carbon plate is replaced next time.

Description

Technical Field

[0001] The invention belongs to the technical field of oxygen generators, and in particular relates to a small molecular sieve oxygen generator. Background Art

[0002] Molecular sieve oxygen generator is a medical or industrial equipment that utilizes the selective adsorption property of zeolite molecular sieve to separate high-concentration oxygen from the air through pressure swing adsorption technology. Its core working principle is to allow compressed air to enter an adsorption tower equipped with a molecular sieve, where nitrogen is adsorbed and oxygen passes through, thereby achieving oxygen-nitrogen separation. It has the characteristics of ready-to-use, safety, reliability, and low energy consumption, and is widely used in home oxygen therapy, hospitals, and oxygen supply in plateau areas.

[0003] At present, in molecular sieve oxygen generators, humid air enters the oxygen production process, which not only seriously hinders the oxygen production efficiency and reduces the overall oxygen production performance, but also is easily adsorbed by the molecular sieve. In the long run, the molecular sieve will gradually decline in performance and greatly shorten its service life due to the adsorption of excessive moisture. In addition, when the oxygen generator is idle, there is a lack of effective protection inside the equipment, and humid air will take advantage of the situation to enter and continuously corrode the internal components of the equipment, further reducing the overall performance of the equipment. For this reason, a small molecular sieve oxygen generator is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a small molecular sieve oxygen generator that performs dehumidification by reciprocatingly replacing activated carbon plates in order to solve the above-mentioned problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: A small molecular sieve oxygen concentrator comprises a shell and an upper cover arranged on the shell, an air inlet grille and an air outlet grille are respectively provided on both sides of the shell, a cooling pipe is arranged in the shell, a sliding seat is slidably arranged in the shell, a compressor and a molecular sieve bed are arranged in the shell, a four-way solenoid valve is arranged on the molecular sieve bed, and two ends of the cooling pipe are respectively connected to the compressor and the four-way solenoid valve; Also includes: A deceleration drive mechanism, wherein the deceleration drive mechanism is disposed in the housing and drives the sliding seat to move in the housing; An activated carbon plate, wherein two activated carbon plates are slidably arranged in a sliding seat; A reciprocating drive mechanism, wherein the reciprocating drive mechanism is arranged on the sliding seat, and the activated carbon plate is intermittently replaced by the reciprocating drive mechanism; The one-way rotation mechanism is arranged below the reciprocating drive mechanism and connected to the reciprocating drive mechanism. The one-way rotation mechanism enables the reciprocating drive mechanism to operate only when the sliding seat moves in a specified direction.

[0006] As a further optimization scheme of the present invention, the lower surface of the sliding seat is connected to a mounting seat, an outer panel is installed on the sliding seat, two air fans in opposite directions are installed on the outer panel, a partition is connected inside the sliding seat, and adjustment grilles are opened on both sides of the sliding seat.

[0007] As a further optimization scheme of the present invention, the reduction drive mechanism includes a mounting plate, a screw is rotatably arranged on the mounting plate, a drive motor is mounted on the mounting plate, the output end of the drive motor is connected to a worm, a worm wheel is fixedly mounted on the screw, the worm is engaged with the worm wheel, and the sliding seat is threadedly connected to the screw.

[0008] As a further optimization scheme of the present invention, the two activated carbon plates are staggered and slidably arranged in the sliding seat, the activated carbon plates are connected with Z-shaped plates, the Z-shaped plates are slidably penetrated and arranged on the sliding seat, a rack is arranged on the inner side of the Z-shaped plate, the lower surface of the sliding seat is rotatably connected with a vertical pole, the vertical pole is fixedly connected with a connecting gear, the vertical pole is fixedly connected with an action gear, and the action gear is meshed with the rack.

[0009] As a further optimization scheme of the present invention, the one-way rotation mechanism includes a spline shaft, which is rotatably arranged on a mounting seat, a spline sleeve is slidably arranged on the spline shaft, the spline sleeve is rotatably connected to the outer shell, a ratchet is fixedly connected to the spline sleeve, a synchronous wheel 1 is rotatably connected to the spline sleeve, a synchronous wheel 2 is fixedly connected to the screw rod, and a synchronous belt is arranged between the synchronous wheel 1 and the synchronous wheel 2.

[0010] As a further optimization solution of the present invention, a plurality of ratchets are rotatably provided on the synchronous wheel 1, an elastic member is connected between the synchronous wheel 1 and the ratchets, and the ratchets are meshed with the ratchet wheel.

[0011] As a further optimization scheme of the present invention, the reciprocating drive mechanism includes a synchronous gear, which is rotatably set on a mounting seat, and is located on both sides of a connecting gear. The synchronous gears are meshed with each other, and the synchronous gear is coaxially connected to a missing gear. The two missing gears are alternately meshed with the connecting gear. A driving gear is fixedly connected to the spline shaft, and the driving gear is meshed with one of the synchronous gears.

[0012] As a further optimization solution of the present invention, the cooling pipe is slidably connected to the sliding seat, the cooling pipe is arranged on a side close to the air outlet grille, and the cooling pipe is arranged between the activated carbon plate and the air fan.

[0013] As a further optimization scheme of the present invention, the side wall of the sliding seat is close to the inner wall of the shell, and slide plates are connected to both sides of the sliding seat. The sliding seat is slidably arranged in the shell through the slide plates, and the adjustment grille can overlap with the air inlet grille and the air outlet grille.

[0014] The beneficial effects of the present invention are: 1. Different from the existing technology, in actual use, the screw rod of the reduction drive mechanism is threadedly connected with the sliding seat to achieve precise position adjustment of the sliding seat, ensuring that the adjustment grille overlaps or staggers with the air inlet grille and the air outlet grille as needed, so as to avoid humid air from invading the casing and the air-dried activated carbon plate when the equipment is out of use.

[0015] 2. Different from the existing technology, in actual use, the one-way rotation mechanism cooperates with the reciprocating drive mechanism to enable the activated carbon plate to be replaced when the equipment is turned on. When the equipment is in use, the activated carbon plate is air-dried at high temperature through the cooling pipe, so that the equipment can be dehumidified after the next position replacement, effectively improving the dehumidification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The present invention Figure 1 Schematic diagram of split structure; Figure 3 It is a schematic diagram of the cooling pipe connection structure of the present invention; Figure 4 It is a schematic diagram of the connection structure of the sliding seat of the present invention; Figure 5 The present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 6 The present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 7 It is a schematic diagram of the connection structure of the activated carbon plate of the present invention; Figure 8 This is a schematic diagram of the disassembly structure of the sliding seat of the present invention; Fig. 9 It is a schematic diagram of the separation structure of the mounting seat and the sliding seat of the present invention; Fig.10 The present invention Fig. 9 The enlarged structural diagram at C in the middle; Fig.11 It is a schematic diagram of the structure of the reciprocating drive mechanism of the present invention.

[0017] In the figure: 1, housing; 11, air inlet grille; 12, air outlet grille; 13, compressor; 14, molecular sieve bed; 15, four-way solenoid valve; 16, gas storage tank; 2, upper cover; 3, sliding seat; 31, mounting seat; 32, outer panel; 321, air fan; 33, partition; 34, adjustment grille; 35, slide plate; 4, speed reduction drive mechanism; 41, drive motor; 42, worm; 421, worm wheel; 43, mounting plate; 5, screw rod; 6. One-way rotation mechanism; 61. Spline shaft; 62. Spline sleeve; 63. Ratchet; 64. Synchronous wheel one; 641. Ratchet; 642. Elastic member; 65. Synchronous wheel two; 66. Synchronous belt; 7. Activated carbon plate; 71. Z-shaped plate; 711. Rack; 72. Vertical pole; 721. Connecting gear; 73. Action gear; 8. Reciprocating drive mechanism; 81. Synchronous gear; 82. Missing gear; 83. Drive gear; 9. Cooling pipe. DETAILED DESCRIPTION

[0018] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] Example 1 like Figure 1 - Fig.11 As shown, a small molecular sieve oxygen concentrator includes a shell 1 and an upper cover 2 arranged on the shell 1, a control panel and an oxygen outlet interface are arranged on the upper cover 2, a sliding seat 3 is slidably arranged in the shell 1, an air inlet grille 11 and an air outlet grille 12 are respectively opened on both sides of the shell 1, a cooling pipe 9 is arranged in the shell 1, a compressor 13 and a molecular sieve bed 14 are arranged in the shell 1, two molecular sieve beds 14 are arranged, a four-way solenoid valve 15 is connected to the molecular sieve bed 14, and both ends of the cooling pipe 9 are respectively connected to the compressor 13 and the four-way solenoid valve 1 5, the molecular sieve bed 14 is connected to the gas storage tank 16, and the gas storage tank 16 is connected to the oxygen outlet interface on the upper cover 2. After passing through the compressor 13, the air enters the four-way solenoid valve 15, and alternately enters the molecular sieve bed 14 through the four-way solenoid valve 15. After passing through the molecular sieve bed 14, the oxygen enters the gas storage tank 16, and then the oxygen outlet interface is used to supply oxygen to the user. The nitrogen generated by the molecular sieve bed 14 is discharged from the four-way solenoid valve 15 (the oxygen production process of the molecular sieve oxygen generator belongs to the prior art and will not be described in detail), and also includes: A deceleration drive mechanism 4, which is disposed in the housing 1 and drives the sliding seat 3 to move in the housing 1; There are two activated carbon plates 7, which are slidably arranged in the sliding seat 3, and the air is dehumidified by the activated carbon plates 7; A reciprocating drive mechanism 8, which is disposed on the sliding seat 3, and allows the activated carbon plate 7 to intermittently change positions through the reciprocating drive mechanism 8; The one-way rotating mechanism 6 is arranged below the reciprocating driving mechanism 8 and connected to the reciprocating driving mechanism 8 . The one-way rotating mechanism 6 enables the reciprocating driving mechanism 8 to operate only when the sliding seat 3 moves in a specified direction.

[0020] like Figure 6 - Figure 7 As shown, a mounting seat 31 is connected to the lower surface of the sliding seat 3, an outer panel 32 is installed on the sliding seat 3, and two air fans 321 in opposite directions are installed on the outer panel 32 to promote air flow. The opposite directions are set, one is responsible for air intake and the other is responsible for exhaust. A partition 33 is arranged in the sliding seat 3 to separate the two areas to avoid mixing of airflows on both sides, so that the exhausted hot and humid gas can re-enter the outer shell 1 in a short time. Adjustment grilles 34 are opened on both sides of the sliding seat 3, and slide plates 35 are arranged on both sides of the sliding seat 3. The sliding seat 3 is slidably set in the outer shell 1 through the slide plates 35, and the sliding seat 3 can be accurately displaced in the outer shell 1 through the slide plates 35.

[0021] like Figure 4 - Figure 5 As shown, the reduction drive mechanism 4 includes a mounting plate 43, on which a lead screw 5 is rotatably arranged, on which a drive motor 41 is mounted, and the drive motor 41 is electrically connected to the control panel on the upper cover 2, and a worm 42 is connected to the output end of the drive motor 41, on which a worm wheel 421 is fixedly mounted, the worm 42 is engaged with the worm wheel 421, and the sliding seat 3 is threadedly connected to the lead screw 5. After the drive motor 41 is started, the worm 42 drives the worm wheel 421, and then the lead screw 5 rotates, thereby realizing stable adjustment of the position of the sliding seat 3, and at the same time, through the one-way self-locking effect between the worm 42 and the worm wheel 421, the stability of the position of the sliding seat 3 after stopping is ensured.

[0022] like Figure 7 - Fig.10 As shown, two activated carbon plates 7 are staggered and slidably arranged in the sliding seat 3, and a Z-shaped plate 71 is connected to the activated carbon plate 7, and the Z-shaped plate 71 is slidably penetrated and arranged on the sliding seat 3. A rack 711 is arranged on the inner side of the Z-shaped plate 71, and a vertical rod 72 is rotatably connected to the lower surface of the sliding seat 3. A connecting gear 721 is fixedly connected to the vertical rod 72, and an action gear 73 is fixedly connected to the vertical rod 72. The action gear 73 is engaged with the rack 711. The activated carbon plate 7 can preliminarily adsorb and dehumidify the air entering the oxygen generator, thereby improving the dryness of the air entering the subsequent links. The action gear 73 is rotated to drive the rack 711 to move, so that the positions of the two activated carbon plates 7 can be replaced.

[0023] like Figure 4 - Figure 6As shown, the one-way rotation mechanism 6 includes a spline shaft 61, which is rotatably installed on the mounting seat 31, and a spline sleeve 62 is slidably arranged on the spline shaft 61. Through the spline sleeve 62 and the spline shaft 61, in the process of the position of the sliding seat 3 changing, the spline sleeve 62 can still drive the spline shaft 61 to rotate, and the spline sleeve 62 is rotatably installed on the housing 1, and a ratchet 63 is fixedly connected to the spline sleeve 62, and a synchronous wheel 1 64 is rotatably connected to the spline sleeve 62, and a synchronous wheel 2 65 is fixedly connected to the screw rod 5, and a synchronous belt 66 is arranged between the synchronous wheel 1 64 and the synchronous wheel 2 65, so that when the screw rod 5 rotates forward, the synchronous wheel 1 64 can be driven to rotate through the synchronous belt 66, and the number of teeth of the synchronous wheel 1 64 should be greater than that of the synchronous wheel 2 65, so that the rotation speed of the spline shaft 61 is slower than that of the screw rod 5.

[0024] like Figure 6 As shown, a plurality of pawls 641 are rotatably provided on the synchronous wheel 64, an elastic member 642 is connected between the synchronous wheel 64 and the pawl 641, the pawl 641 is meshed with the ratchet wheel 63, when the screw 5 is reversed, the ratchet wheel 63 cooperates with the pawl 641, at this time the spline shaft 61 cannot follow the synchronous movement of the synchronous wheel 64, so the activated carbon plate 7 can only be replaced when the equipment is turned on.

[0025] like Fig. 9 - Fig.11 As shown, the reciprocating drive mechanism 8 includes a synchronous gear 81, which is rotatably set on the mounting seat 31, and the synchronous gear 81 is located on both sides of the connecting gear 721. The synchronous gears 81 mesh with each other, and the synchronous gear 81 is coaxially connected with a missing gear 82, and the two missing gears 82 mesh with the connecting gear 721 alternately. A driving gear 83 is fixedly connected to the spline shaft 61, and the driving gear 83 meshes with one of the synchronous gears 81. The synchronous gears 81 mesh with each other, so that the synchronous gears 81 rotate in opposite directions. At the same time, the driving gear 83 has a smaller number of teeth than the synchronous gear 81, so that the rotation speed of the synchronous gear 81 is slowed down. In this way, during a displacement process of the sliding seat 3, only a single missing gear 82 is connected to the connecting gear 721.

[0026] like Figure 7 - Figure 8 As shown, the cooling pipe 9 is slidably connected to the sliding seat 3, so that there will be no interference between the sliding seat 3 and the cooling pipe 9 when it moves. The cooling pipe 9 is arranged on the side close to the air outlet grille 12, and the cooling pipe 9 is arranged between the activated carbon plate 7 and the air fan 321, so that the air fan 321 blows the high-temperature gas near the cooling pipe 9 to the activated carbon plate 7 close to the air outlet grille 12, so that the activated carbon plate 7 can be air-dried at high temperature and impurities adsorbed on the activated carbon plate 7 can be cleaned.

[0027] like Figure 2 - Figure 4As shown, the side wall of the sliding seat 3 is close to the inner wall of the outer shell 1, and the adjustment grille 34 can overlap with the air inlet grille 11 and the air outlet grille 12. By changing the position of the sliding seat 3, the opening and closing of the air inlet grille 11 and the air outlet grille 12 are controlled to ensure that the equipment can effectively regulate the inflow and outflow of air during operation and idle stages.

[0028] It should be noted that when the small molecular sieve oxygen generator is turned on, the control panel starts the driving motor 41, and the worm 42 at its output end drives the worm wheel 421 on the screw rod 5 to rotate, thereby rotating the screw rod 5. Since the sliding seat 3 is threadedly connected to the screw rod 5, the sliding seat 3 is displaced in the direction of the screw rod 5 in the housing 1 to adjust the position of the sliding seat 3, so that the adjustment grille 34 overlaps with the air inlet grille 11 and the air outlet grille 12. During the movement of the sliding seat 3, the screw rod 5 drives the synchronous wheel 1 64 to rotate through the synchronous belt 66, and the ratchet 641 on the synchronous wheel 1 64 is engaged with the ratchet 641 under the action of the elastic member 642. 3 meshes, driving the spline sleeve 62 to rotate, and the spline sleeve 62 drives the driving gear 83 to rotate through the spline shaft 61; the driving gear 83 meshes with the synchronous gear 81, causing the synchronous gear 81 to rotate, and the missing gear 82 on the synchronous gear 81 meshes with the connecting gear 721, driving the connecting gear 721 to rotate, and the connecting gear 721 in turn drives the action gear 73 to rotate, and the action gear 73 meshes with the rack 711 on the inner side of the Z-shaped plate 71 on the activated carbon plate 7, so that the two activated carbon plates 7 slide alternately in the sliding seat 3 to achieve the replacement position. After the position replacement is completed, the missing gear 82 is just disengaged from the connecting gear 721.

[0029] When oxygen production starts, the air fan 321 on the sliding seat 3 starts to operate, and the outside air first enters the outer shell 1 through the air inlet grille 11 on one side of the outer shell 1. During this process, the air passes through the activated carbon plate 7, and the activated carbon plate 7 preliminarily adsorbs and dehumidifies the air. Then the air enters the compressor 13, which compresses the air. When the pressure increases, the temperature increases accordingly. Then the high-temperature air enters the cooling pipe 9 and is cooled by air through another air fan 321. The hot air blown out of the cooling pipe 9 is blown onto the activated carbon plate 7 close to the air outlet grille 12, and is dried and dehumidified at high temperature. The cooled compressed air enters the molecular sieve bed 14, and the gas is separated by the four-way solenoid valve on the molecular sieve bed 14 to produce oxygen for use, and the generated nitrogen is discharged by another air fan 321 through the air outlet grille 12.

[0030] When the equipment is shut down, the control panel restarts the drive motor 41 and rotates in the reverse direction to reset the sliding seat 3. At this time, the adjustment grille 34 is offset from the air inlet grille 11 and the air outlet grille 12, so that the sliding seat 3 blocks the air inlet grille 11 and the air outlet grille 12 to prevent humid air from invading the housing 1 and the air-dried activated carbon plate 7 when idle. While the synchronous wheel 2 65 on the screw 5 rotates in the reverse direction, the synchronous wheel 1 64 also rotates in the reverse direction through the synchronous belt 66. Through the provided ratchet 63 and pawl 641, the spline shaft 61 does not move at this time, so that the activated carbon plate 7 does not move. When the equipment is started again, the other missing gear 82 engages with the connecting gear 721, causing the action gear 73 to reverse, thereby causing the position of the activated carbon plates 7 to be replaced again.

[0031] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A small molecular sieve oxygen generator, comprising a housing (1) and an upper cover (2) arranged on the housing (1), wherein an air inlet grille (11) and an air outlet grille (12) are respectively provided on both sides of the housing (1), and a cooling pipe (9) is arranged inside the housing (1), characterized in that: A sliding seat (3) is slidably arranged in the housing (1), a compressor (13) and a molecular sieve bed (14) are arranged in the housing (1), a four-way solenoid valve (15) is arranged on the molecular sieve bed (14), and two ends of the cooling pipe (9) are respectively connected to the compressor (13) and the four-way solenoid valve (15); Also includes: A deceleration drive mechanism (4), wherein the deceleration drive mechanism (4) is arranged in the housing (1) and drives the sliding seat (3) to move in the housing (1) through the deceleration drive mechanism (4); An activated carbon plate (7), wherein two activated carbon plates (7) are provided and are slidably arranged in the sliding seat (3); A reciprocating drive mechanism (8), wherein the reciprocating drive mechanism (8) is arranged on the sliding seat (3), and the activated carbon plate (7) is intermittently replaced in position by the reciprocating drive mechanism (8); A one-way rotation mechanism (6) is arranged below the reciprocating drive mechanism (8) and connected to the reciprocating drive mechanism (8). The one-way rotation mechanism (6) enables the reciprocating drive mechanism (8) to operate only when the sliding seat (3) moves in a specified direction.

2. A small molecular sieve oxygen generator according to claim 1, characterized in that: The lower surface of the sliding seat (3) is connected to a mounting seat (31), an outer panel (32) is mounted on the sliding seat (3), two air fans (321) in opposite directions are mounted on the outer panel (32), a partition (33) is connected inside the sliding seat (3), and adjustment grilles (34) are provided on both sides of the sliding seat (3).

3. A small molecular sieve oxygen generator according to claim 1, characterized in that: The reduction drive mechanism (4) comprises a mounting plate (43), a lead screw (5) is rotatably mounted on the mounting plate (43), a drive motor (41) is mounted on the mounting plate (43), an output end of the drive motor (41) is connected to a worm (42), a worm wheel (421) is fixedly mounted on the lead screw (5), the worm (42) is engaged with the worm wheel (421), and the sliding seat (3) is threadedly connected to the lead screw (5).

4. A small molecular sieve oxygen generator according to claim 3, characterized in that: The two activated carbon plates (7) are arranged in a staggered and sliding manner in the sliding seat (3); the activated carbon plates (7) are connected to a Z-shaped plate (71); the Z-shaped plate (71) is slidably penetrated and arranged on the sliding seat (3); a rack (711) is arranged on the inner side of the Z-shaped plate (71); a vertical rod (72) is rotatably connected to the lower surface of the sliding seat (3); a connecting gear (721) is fixedly connected to the vertical rod (72); an action gear (73) is fixedly connected to the vertical rod (72); and the action gear (73) is meshed with the rack (711).

5. A small molecular sieve oxygen generator according to claim 4, characterized in that: The one-way rotation mechanism (6) comprises a spline shaft (61), the spline shaft (61) being rotatably arranged on a mounting seat (31), a spline sleeve (62) being slidably arranged on the spline shaft (61), the spline sleeve (62) being rotatably connected to the housing (1), a ratchet (63) being fixedly connected to the spline sleeve (62), a synchronous wheel 1 (64) being rotatably connected to the spline sleeve (62), a synchronous wheel 2 (65) being fixedly connected to the screw rod (5), and a synchronous belt (66) being arranged between the synchronous wheel 1 (64) and the synchronous wheel 2 (65).

6. A small molecular sieve oxygen generator according to claim 5, characterized in that: A plurality of ratchet pawls (641) are rotatably arranged on the synchronous wheel (64), an elastic member (642) is connected between the synchronous wheel (64) and the ratchet pawls (641), and the ratchet pawls (641) are meshed with the ratchet wheel (63).

7. A small molecular sieve oxygen generator according to claim 5, characterized in that: The reciprocating drive mechanism (8) comprises a synchronous gear (81), the synchronous gear (81) being rotatably mounted on a mounting seat (31), the synchronous gear (81) being located on both sides of a connecting gear (721), the synchronous gears (81) being meshed with each other, the synchronous gear (81) being coaxially connected to a missing gear (82), the two missing gears (82) being alternately meshed with the connecting gear (721), and a driving gear (83) being fixedly connected to the spline shaft (61), the driving gear (83) being meshed with one of the synchronous gears (81).

8. A small molecular sieve oxygen generator according to claim 2, characterized in that: The cooling pipe (9) is slidably connected to the sliding seat (3); the cooling pipe (9) is arranged on a side close to the air outlet grille (12); and the cooling pipe (9) is arranged between the activated carbon plate (7) and the air fan (321).

9. A small molecular sieve oxygen generator according to claim 2, characterized in that: The side walls of the sliding seat (3) are closely attached to the inner wall of the outer shell (1); slide plates (35) are connected to both sides of the sliding seat (3); the sliding seat (3) is slidably arranged in the outer shell (1) via the slide plates (35); and the adjustment grille (34) can overlap with the air inlet grille (11) and the air outlet grille (12).

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