Compressed air diffusion mechanism for pressure swing adsorption nitrogen making equipment

Abstract

The utility model discloses a compressed air diffusion mechanism for pressure swing adsorption nitrogen making equipment, and belongs to the field of nitrogen making equipment.The compressed air diffusion mechanism comprises a tank body, an air delivery pipe is arranged below the tank body, a sleeve is arranged on the side wall of the air delivery pipe in a sleeving mode, and the sleeve and the bottom end of the tank body are connected with an air inlet pipe; a plurality of groups of air outlet holes distributed in an annular array are formed in the side wall of the air conveying pipe, at least twenty air outlet holes in the same group are distributed in the side wall of the air conveying pipe in an annular array, and the air outlet holes are located in the sleeve; a supporting pipe is fixedly mounted in the tank body, a mounting plate is fixedly mounted in the supporting pipe, a flow guide fan is arranged at the top end of the mounting plate, a rotating rod is rotationally mounted in the supporting pipe, and a shifting plate is fixedly mounted on the side wall of the rotating rod. Through the cooperation of the flow guide fan blades, the shifting plate and the diffusion assembly, air entering the tank body can be uniformly diffused, and the damage degree of the carbon molecule plate during air flowing can be reduced.

Description

Technical Field

[0001] The present application relates to the field of nitrogen production equipment, and more specifically, to a compressed air diffusion mechanism for pressure swing adsorption nitrogen production equipment. Background Art

[0002] Pressure swing adsorption nitrogen equipment uses carbon molecular sieve as adsorbent and uses the principle of pressure swing adsorption to produce nitrogen. The principle of separating air depends on the different diffusion rates of oxygen and nitrogen in the air in the micropores of the carbon molecular sieve. Oxygen diffuses into the molecular sieve much faster, so that oxygen molecules are adsorbed on the solid phase of the carbon molecular sieve, while nitrogen molecules are enriched in the gas phase. The capacity of carbon molecular sieve to adsorb oxygen increases with its pressure increase and decreases with its pressure decrease. In this way, the carbon molecular sieve adsorbs oxygen under pressure and desorbs oxygen under pressure, forming a cyclic operation to achieve the purpose of nitrogen production. When using pressure swing adsorption nitrogen equipment, it is necessary to diffuse the compressed air, which is conducive to reducing the impact of air on the carbon molecular plate.

[0003] The patent with application number 201922103804.5 discloses a compressed air diffusion device for pressure swing adsorption nitrogen making equipment, including a storage tank, a docking ring, a support leg, a transmission pipe, an input pipe, a valve, an output pipe, an air outlet plate, a mounting frame and a fan, a storage tank is installed on the upper end face of the support leg, a docking ring is arranged on the lower side of the storage tank, a mounting frame is installed on the lower side of the storage tank, a fan is assembled on the upper end face of the mounting frame, an air outlet plate is installed on the lower side of the mounting frame, an output pipe is installed on the lower end face of the air outlet plate, a transmission pipe is connected to the lower end face of the output pipe, an input pipe is installed on the lower end face of the transmission pipe, a valve is installed inside the transmission pipe, and an input pipe is installed on the upper end face of the docking ring. The utility model is arranged by the transmission pipe, the input pipe, the valve, the output pipe, the air outlet plate, the mounting frame and the fan, and the design facilitates the dispersion and diffusion of the compressed air of the pressure swing adsorption nitrogen making equipment, solves the problem of poor compressed air diffusion effect of the original pressure swing adsorption nitrogen making equipment, and improves the diffusion effect of the utility model.

[0004] With respect to the above-mentioned related technologies, air achieves a diffusion effect through the air outlet plate, but the transmission pipe is below the air outlet plate, and the gas enters the output pipe through the transmission pipe. The air may pass through the air outlet plate through the output diameter, causing uneven air diffusion and reducing the diffusion effect of the equipment. Utility Model Content

[0005] In order to solve the above problems, the present application provides a compressed air diffusion mechanism for a pressure swing adsorption nitrogen production device, which adopts the following technical solution:

[0006] A compressed air diffusion mechanism for a pressure swing adsorption nitrogen production device, comprising a tank body, an air delivery pipe is arranged below the tank body, a sleeve is arranged on the side wall of the air delivery pipe, and an air inlet pipe is connected to the sleeve and the bottom of the tank body, a plurality of groups of air outlet holes distributed in a circular array are arranged on the side wall of the air delivery pipe, at least twenty air outlet holes in the same group are arranged in a circular array on the side wall of the air delivery pipe, and the air outlet holes are located in the sleeve;

[0007] A support tube is fixedly installed in the tank body, a mounting plate is fixedly installed in the support tube, and a guide fan is provided on the top of the mounting plate, a rotating rod is rotatably installed in the support tube, a toggle plate is fixedly installed on the side wall of the rotating rod, the rotating rod and the toggle plate are both located above the guide fan, a mounting box is fixedly installed on the side wall of the tank body, one end of the rotating rod passes through the tank body and extends into the mounting box, and a driving reciprocating assembly is provided on one end of the rotating rod passing through the mounting box;

[0008] A support ring is fixedly installed in the tank body, and a mounting ring is arranged above the support ring, and a diffusion component is arranged in the mounting ring, and a fixing component is arranged between the mounting ring and the support ring.

[0009] By adopting the above technical scheme, when the equipment is used, compressed air enters the air pipe, the end of the air pipe is closed, and then the air enters the sleeve through the air outlet hole opened on the side wall of the air pipe, and the air can play a role of preliminary diffusion through the air outlet hole, and then the air enters the inside of the tank through the air inlet pipe, and the air entering the inside of the tank is guided by the operation of the guide fan, which plays a role of guiding the air, and the guide fan can play a role of breaking up the air, and then, by driving the reciprocating component to drive the rotating rod to rotate, the rotating rod drives the toggle plate to move back and forth, which can play a guiding role and can make the air evenly distributed at the bottom of the diffusion component, and the air can achieve further diffusion through the diffusion component. The coordination of the air outlet hole, the guide fan, the toggle plate and the diffusion component is beneficial to improving the air diffusion effect of the equipment.

[0010] Furthermore, the driving reciprocating assembly includes a transmission gear fixedly sleeved on the rotating rod and penetrating the side wall of one end of the installation box, the first connecting rod and the second connecting rod are rotatably installed on the inner walls on both sides of the installation box, and a reciprocating screw rod is fixedly installed on the opposite side of the first connecting rod and the second connecting rod, a protective box is fixedly installed on one side of the installation box, and a reduction motor is fixedly installed in the protective box, the first connecting rod is away from one end of the reciprocating screw rod and penetrates into the protective box and is fixedly connected to the end of the output shaft of the reduction motor, the side wall of the reciprocating screw rod is sleeved with a support block, the top of the support block is fixedly installed with a tooth block plate, and the tooth block plate is meshed with the transmission gear.

[0011] By adopting the above technical solution, the first connecting rod is driven to rotate by the reduction motor, the first connecting rod drives the reciprocating screw to rotate, the reciprocating screw drives the support block to reciprocate with the tooth block plate, the transmission gear is driven to rotate by the tooth block plate, the transmission gear drives the rotating rod to rotate, and the rotating rod drives the toggle plate to reciprocate, which can play the role of toggling the air, so as to facilitate the uniform distribution of air under the support ring.

[0012] Furthermore, the inner wall at the bottom end of the installation box is provided with two symmetrically distributed grooves, a slide rod is fixedly installed in each of the two grooves, and a stabilizing rod is sleeved on the side walls of the two slide rods, and the top ends of the two stabilizing rods are fixedly connected to the bottom end of the gear block plate.

[0013] By adopting the above technical solution, when the tooth block plate moves, the tooth block plate slides along the side wall of the sliding rod installed in the same group of grooves with the stabilizing rod, and the stabilizing rod can play a role in supporting and stabilizing the tooth block plate. The cooperation of the stabilizing rod, the sliding rod and the groove is helpful to maintain the stability of the movement of the tooth block plate.

[0014] Furthermore, the diffusion assembly includes two gas outlet plates fixedly mounted in the mounting ring, and a plurality of aluminum oxide particles are arranged between the two gas outlet plates.

[0015] By adopting the above technical scheme, the two air outlet plates are used in the mounting ring, and the air flows through the through holes opened in the side walls of the air outlet plates, thereby playing the role of diffusing the air. Alumina particles are arranged between the two air outlet plates, and the air flows through the gaps between the stacked alumina particles, thereby achieving the effect of further diffusing the air. Alumina is a white solid that is difficult to dissolve in water. It is odorless, tasteless, extremely hard, and easy to absorb moisture without being deliquescent. Alumina can absorb moisture from compressed air.

[0016] Furthermore, the fixing assembly includes two blocks fixedly installed at the bottom end of the mounting ring, a slot matching the block is provided at the top of the support ring, movable slots are provided on the inner walls on both sides of the two slots, positioning rods are slidably installed in the movable slots, springs are fixedly connected between the opposite ends of the two positioning rods in the same group and the inner wall opposite to the movable slot in the same group, and a positioning slot matching the positioning rods in the same group is provided on the side wall of the block.

[0017] By adopting the above technical solution, the staff moves the block installed at the bottom of the mounting ring into the slot opened at the top of the support ring, and the engagement of the block and the slot plays a role in positioning and fixing the mounting ring, and when the block moves into the slot, the block pushes the same group of positioning rods to slide into the movable slot, and the positioning rod pushes the same group of springs to contract. When the block engages with the same group of slots, the positioning rod returns to its original position under the elastic force of the same group of springs, and the positioning rod engages with the positioning slot opened on the side wall of the same group of blocks, thereby achieving the effect of further fixing the mounting ring.

[0018] Furthermore, two symmetrically distributed limit blocks are fixedly mounted on the side walls at opposite ends of the two positioning rods in the same group, and the inner wall of the movable groove is provided with limit grooves matching the limit blocks in the same group.

[0019] By adopting the above technical solution, when the positioning rod slides in the movable groove, the positioning rod slides in the same group of limiting grooves with the limiting block. The cooperation between the limiting block and the limiting groove helps to prevent the positioning rod from leaving the same group of movable grooves and helps to maintain the sliding stability of the positioning rod.

[0020] Furthermore, two symmetrically distributed rubber rods are fixedly mounted on the bottom end of the mounting ring, and slots matching the rubber rods are formed on the top end of the support ring.

[0021] By adopting the above technical solution, the bottom end of the mounting ring is provided with a rubber rod. When the mounting ring and the support ring are fitted together, the rubber rod is placed in a slot opened at the top of the support ring. The rubber rod and the slot are engaged to position and fix the mounting ring.

[0022] Furthermore, a filter screen is provided on the side wall of the gas transmission pipe, and the filter screen is located inside the sleeve.

[0023] By adopting the above technical solution, the side wall of the gas transmission pipe plays a role in filtering dust and impurities in the air through the setting of the filter net.

[0024] In summary, this application includes the following beneficial technical effects:

[0025] (1) In the present invention, air enters the air inlet pipe through the air outlet holes provided on the side wall of the air delivery pipe, and then the air enters the tank body through the air inlet pipe. The arrangement of multiple air outlet holes can play a role in preliminary diffusion of the air. The arrangement of the guide fan in the tank body can play a role in guiding the air and scatter the air through the fan blades. Subsequently, the reciprocating assembly is driven to drive the toggle plate to reciprocate, which plays a guiding role, making it easier for the air to pass through the diffusion assembly evenly, which is beneficial to improving the air diffusion efficiency of the equipment.

[0026] (2) In the present invention, the installation ring and the support ring are assembled by fixing the components, which makes it easy for the staff to disassemble and repair the diffusion components, thereby helping to maintain the diffusion efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a compressed air diffusion mechanism for a pressure swing adsorption nitrogen production equipment;

[0028] Figure 2 It is a cross-sectional view of the utility model;

[0029] Figure 3 For this utility model Figure 2 A magnified view of middle;

[0030] Figure 4 For this utility model Figure 2 Enlarged view of middle B;

[0031] Figure 5 For this utility model Figure 2 Enlarged view of middle C;

[0032] Figure 6 It is an exploded view of the driving reciprocating assembly in the utility model;

[0033] Figure 7 It is a cross-sectional view of the support ring in the utility model;

[0034] Figure 8 For this utility model Figure 7 Enlarged view of D in the middle.

[0035] Description of the numbers in the figure:

[0036] 1. Tank body; 2. Mounting box; 3. Protection box; 4. Air pipe; 5. Casing; 6. Inlet pipe; 7. Mounting ring; 8. Support ring; 9. Toggle plate; 10. Rotating rod; 11. Guide fan; 12. Mounting plate; 13. Support pipe; 14. Air outlet; 15. Filter; 16. Reducer motor; 17. First connecting rod; 18. Support block; 19. Reciprocating screw rod; 20. Second connecting rod; 21. Tooth plate; 22. Transmission gear; 23. Air outlet plate; 24. Alumina particles; 25. Block; 26. Slot; 27. Positioning rod; 28. Spring; 29. ​​Movable slot. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0038] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] The following is combined with Figure 1-8 This application is described in further detail.

[0041] See also Figure 1-8 A compressed air diffusion mechanism for a pressure swing adsorption nitrogen production device comprises a tank body 1, an air delivery pipe 4 is arranged below the tank body 1, a sleeve 5 is sleeved on the side wall of the air delivery pipe 4, and an air inlet pipe 6 is connected to the bottom of the sleeve 5 and the tank body 1, a plurality of groups of air outlet holes 14 distributed in a circular array are opened on the side wall of the air delivery pipe 4, the same group of air outlet holes 14 has at least twenty and are arranged in a circular array on the side wall of the air delivery pipe 4, the air outlet holes 14 are located in the sleeve 5, a filter screen 15 is sleeved on the side wall of the air delivery pipe 4, and the filter screen 15 is located in the sleeve 5.

[0042] When the device is in use, compressed air enters the air pipe 4, the end of which is closed, and then the air enters the sleeve 5 through the air outlet 14 opened on the side wall of the air pipe 4. The air can play a preliminary diffusion role through the air outlet 14, and the side wall of the air pipe 4 is provided with a filter 15 to filter dust and impurities in the air.

[0043] A support tube 13 is fixedly installed in the tank body 1, a mounting plate 12 is fixedly installed in the support tube 13, and a guide fan 11 is provided at the top of the mounting plate 12. A rotating rod 10 is rotatably installed in the support tube 13, and a toggle plate 9 is fixedly installed on the side wall of the rotating rod 10. The rotating rod 10 and the toggle plate 9 are both located above the guide fan 11. A mounting box 2 is fixedly installed on the side wall of the tank body 1. One end of the rotating rod 10 passes through the tank body 1 and extends into the mounting box 2. A driving reciprocating assembly is provided at one end of the rotating rod 10 passing through the mounting box 2. The driving reciprocating assembly includes a transmission gear fixedly sleeved on the side wall of one end of the rotating rod 10 passing through the mounting box 2. Wheel 22, the first connecting rod 17 and the second connecting rod 20 are rotatably installed on the inner walls on both sides of the installation box 2, and the reciprocating screw 19 is fixedly installed on the opposite side of the first connecting rod 17 and the second connecting rod 20, a protective box 3 is fixedly installed on one side of the installation box 2, and a reduction motor 16 is fixedly installed in the protective box 3, the first connecting rod 17 away from the end of the reciprocating screw 19 penetrates into the protective box 3 and is fixedly connected to the end of the output shaft of the reduction motor 16, the side wall of the reciprocating screw 19 is sleeved with a support block 18, and a gear plate 21 is fixedly installed on the top of the support block 18, and the gear plate 21 is meshed with the transmission gear 22.

[0044] Then the air enters the interior of the tank body 1 through the air intake pipe 6, and the air entering the tank body 1 is guided by the guide fan 11 to guide the air, and the guide fan 11 can disperse the air. Then, the first connecting rod 17 is driven to rotate by the reduction motor 16, and the first connecting rod 17 drives the reciprocating screw 19 to rotate, and the reciprocating screw 19 drives the support block 18 to reciprocate with the tooth block plate 21, and the transmission gear 22 is driven to rotate by the tooth block plate 21, and the transmission gear 22 drives the rotating rod 10 to rotate, and the rotating rod 10 drives the toggle plate 9 to rotate back and forth, which can play the role of toggling the air, so as to facilitate the uniform distribution of air under the support ring 8.

[0045] Two symmetrically distributed grooves are provided on the inner wall at the bottom end of the installation box 2, and sliding rods are fixedly installed in the two grooves, and stabilizing rods are sleeved on the side walls of the two sliding rods. The top ends of the two stabilizing rods are fixedly connected to the bottom ends of the tooth block plates 21. When the tooth block plates 21 move, the tooth block plates 21 slide with the stabilizing rods on the side walls of the sliding rods installed in the same group of grooves. The stabilizing rods can support and stabilize the tooth block plates 21. The cooperation of the stabilizing rods, the sliding rods and the grooves is conducive to maintaining the stability of the movement of the tooth block plates 21.

[0046] A support ring 8 is fixedly installed in the tank body 1, and a mounting ring 7 is provided above the support ring 8, and a diffusion component is provided in the mounting ring 7. The diffusion component includes two air outlet plates 23 fixedly installed in the mounting ring 7, and a plurality of aluminum oxide particles 24 are provided between the two air outlet plates 23. Through the action of the two air outlet plates 23 in the mounting ring 7, air flows through the through holes provided on the side walls of the air outlet plates 23, thereby playing the role of diffusing the air. Alumina particles 24 are provided between the two air outlet plates 23, and air flows through the gaps between the stacked aluminum oxide particles 24, thereby achieving the effect of further diffusing the air. Alumina is a white solid that is difficult to dissolve in water. It is odorless, tasteless, extremely hard, and easy to absorb moisture without being deliquescent. Alumina can absorb moisture from compressed air.

[0047] A fixing assembly is provided between the mounting ring 7 and the supporting ring 8, and the fixing assembly includes two blocks 25 fixedly mounted on the bottom end of the mounting ring 7, a slot 26 matching the block 25 is provided at the top end of the supporting ring 8, movable slots 29 are provided on the inner walls on both sides of the two slots 26, and positioning rods 27 are slidably installed in the movable slots 29, and springs 28 are fixedly connected between the opposite ends of the two positioning rods 27 of the same group and the inner walls on the side opposite to the movable slots 29 of the same group, and a positioning slot matching the positioning rods 27 of the same group is provided on the side walls of the block 25. When the air outlet plate 23 needs to be installed, the staff moves the block 25 installed at the bottom end of the mounting ring 7 into the slot 26 provided at the top end of the supporting ring 8, and the mounting ring 7 is positioned and fixed through the engagement of the block 25 and the slot 26. When the block 25 moves into the slot 26, the block 25 pushes the positioning rod 27 of the same group to slide into the movable slot 29, and the positioning rod 27 pushes the spring 28 of the same group to contract. When the block 25 is engaged with the slot 26 of the same group, the positioning rod 27 returns to its original position under the elastic force of the spring 28 of the same group, and the positioning rod 27 is engaged with the positioning groove provided on the side wall of the block 25 of the same group, so as to further fix the mounting ring 7. Two symmetrically distributed rubber rods are fixedly installed at the bottom end of the mounting ring 7, and a slot matching the rubber rod is provided at the top of the support ring 8. The bottom end of the mounting ring 7 is provided with the rubber rod. When the mounting ring 7 and the support ring 8 are fitted, the rubber rod is placed in the slot provided at the top of the support ring 8. The engagement of the rubber rod and the slot plays a role in positioning and fixing the mounting ring 7.

[0048] Two symmetrically distributed limit blocks are fixedly installed on the side walls at the opposite ends of the two positioning rods 27 in the same group. The inner wall of the movable groove 29 is provided with a limit groove matching the limit blocks in the same group. When the positioning rod 27 slides in the movable groove 29, the positioning rod 27 slides in the limit groove of the same group with the limit blocks. The cooperation between the limit blocks and the limit grooves helps to prevent the positioning rods 27 from detaching from the movable grooves 29 of the same group and helps to maintain the sliding stability of the positioning rods 27.

[0049] The implementation principle of the embodiment of the present application is as follows: when the device is in use, compressed air enters the air pipe 4, the end of the air pipe 4 is closed, and then the air enters the sleeve 5 through the air outlet 14 opened on the side wall of the air pipe 4, and the air can play a preliminary diffusion role through the air outlet 14, and then the air enters the tank body 1 through the air inlet pipe 6, and the air entering the tank body 1 is guided by the guide fan 11 to guide the air, and the guide fan 11 can break up the air, and then, by driving the reciprocating assembly to drive the rotating rod 10 to rotate, the rotating rod 10 drives the toggle plate 9 to move back and forth, which can play a guiding role and can make the air evenly distributed at the bottom of the diffusion assembly, and the air can be further diffused through the diffusion assembly, and the cooperation of the air outlet 14, the guide fan 11, the toggle plate 9 and the diffusion assembly is beneficial to improving the air diffusion effect of the equipment.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A compressed air diffusion mechanism for a pressure swing adsorption nitrogen production device, comprising a tank body (1), characterized in that: An air delivery pipe (4) is provided below the tank body (1), a sleeve (5) is provided on the side wall of the air delivery pipe (4), and an air inlet pipe (6) is connected to the sleeve (5) and the bottom end of the tank body (1), a plurality of groups of air outlet holes (14) distributed in a circular array are provided on the side wall of the air delivery pipe (4), at least twenty air outlet holes (14) in the same group are distributed in a circular array on the side wall of the air delivery pipe (4), and the air outlet holes (14) are located inside the sleeve (5); A support tube (13) is fixedly installed in the tank body (1), a mounting plate (12) is fixedly installed in the support tube (13), and a guide fan (11) is arranged at the top of the mounting plate (12); a rotating rod (10) is rotatably installed in the support tube (13), a toggle plate (9) is fixedly installed on the side wall of the rotating rod (10), and both the rotating rod (10) and the toggle plate (9) are located above the guide fan (11); a mounting box (2) is fixedly installed on the side wall of the tank body (1), one end of the rotating rod (10) passes through the tank body (1) and extends into the mounting box (2), and a driving reciprocating component is arranged at one end of the rotating rod (10) passing through the mounting box (2); A support ring (8) is fixedly installed in the tank body (1), and a mounting ring (7) is provided above the support ring (8), and a diffusion component is provided in the mounting ring (7), and a fixing component is provided between the mounting ring (7) and the support ring (8).

2. The compressed air diffusion mechanism for pressure swing adsorption nitrogen production equipment according to claim 1, characterized in that: The driving reciprocating assembly comprises a transmission gear (22) fixedly sleeved on the rotating rod (10) and penetrating the side wall of one end of the installation box (2); the first connecting rod (17) and the second connecting rod (20) are rotatably mounted on the inner walls on both sides of the installation box (2), and a reciprocating screw rod (19) is fixedly mounted on the opposite side of the first connecting rod (17) and the second connecting rod (20); a protective box (3) is fixedly mounted on one side of the installation box (2), and a reduction motor (16) is fixedly mounted in the protection box (3); the end of the first connecting rod (17) away from the reciprocating screw rod (19) penetrates into the protection box (3) and is fixedly connected to the end of the output shaft of the reduction motor (16); a support block (18) is sleeved on the side wall of the reciprocating screw rod (19); a tooth block plate (21) is fixedly mounted on the top of the support block (18), and the tooth block plate (21) is meshed with the transmission gear (22).

3. The compressed air diffusion mechanism for pressure swing adsorption nitrogen production equipment according to claim 2, characterized in that: The inner wall at the bottom end of the installation box (2) is provided with two symmetrically distributed grooves, a slide bar is fixedly installed in each of the two grooves, and a stabilizing rod is sleeved on the side walls of the two slide bars, and the top ends of the two stabilizing rods are fixedly connected to the bottom end of the tooth block plate (21).

4. The compressed air diffusion mechanism for pressure swing adsorption nitrogen production equipment according to claim 1, characterized in that: The diffusion component comprises two gas outlet plates (23) fixedly mounted in a mounting ring (7), and a plurality of aluminum oxide particles (24) are arranged between the two gas outlet plates (23).

5. The compressed air diffusion mechanism for pressure swing adsorption nitrogen production equipment according to claim 1, characterized in that: The fixing assembly comprises two clamping blocks (25) fixedly mounted on the bottom end of the mounting ring (7); a clamping groove (26) matching the clamping block (25) is provided at the top end of the supporting ring (8); movable grooves (29) are provided on the inner walls on both sides of the two clamping grooves (26); positioning rods (27) are slidably mounted in the movable grooves (29); a spring (28) is fixedly connected between the opposite ends of the two positioning rods (27) in the same group and the inner walls on the side opposite to the movable grooves (29) in the same group; and a positioning groove matching the positioning rods (27) in the same group is provided on the side walls of the clamping blocks (25).

6. The compressed air diffusion mechanism for pressure swing adsorption nitrogen production equipment according to claim 5, characterized in that: Two symmetrically distributed limiting blocks are fixedly mounted on the side walls at opposite ends of the two positioning rods (27) in the same group, and limiting grooves matching the limiting blocks in the same group are formed on the inner wall of the movable groove (29).

7. The compressed air diffusion mechanism for pressure swing adsorption nitrogen production equipment according to claim 1, characterized in that: Two symmetrically distributed rubber rods are fixedly mounted on the bottom end of the mounting ring (7), and slots matching the rubber rods are provided on the top end of the support ring (8).

8. The compressed air diffusion mechanism for pressure swing adsorption nitrogen production equipment according to claim 1, characterized in that: The side wall of the gas delivery pipe (4) is sleeved with a filter screen (15), and the filter screen (15) is located inside the sleeve (5).

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