A fully interface-integrated oxygen-nitrogen generator

Abstract

This invention relates to the field of oxygen-deficient nitrogen generator technology, and discloses a fully integrated oxygen-deficient nitrogen generator comprising a pair of adsorption towers. The invention employs a design where two adsorption towers operate alternately; one focuses on nitrogen production, while the other is responsible for the emission of oxygen adsorbed by the carbon molecular sieve. Through the coordinated action of components such as rocker plates and connecting rods, precise and rapid switching of the two adsorption towers' operating states is achieved. This effectively avoids the drawback of requiring a single adsorption tower to be shut down for oxygen desorption, ensuring the device can continuously and stably produce oxygen-deficient nitrogen, significantly improving production efficiency and enabling comprehensive integration of the production process. Simultaneously, the pressurized design within the adsorption towers activates the adsorption performance of the carbon molecular sieve, and the gaps formed by the rotation of the carbon molecular sieve facilitate gas flow and emission from the bottom of the adsorption tower, further improving the efficiency and thoroughness of oxygen-nitrogen separation. This allows for the removal of oxygen adsorbed by the carbon molecular sieve, enhancing overall operational efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of oxygen-deficient nitrogen generators, specifically, it relates to an oxygen-deficient nitrogen generator with full interface fusion. Background Technology

[0002] In various fields such as industrial production, food preservation, electronics manufacturing, and metal heat treatment, oxygen-deficient nitrogen is widely used as an inert protective gas. Its preparation efficiency, purity, and stability directly affect the production quality and operational efficiency of related industries. Therefore, the optimized design of oxygen-deficient nitrogen generators has significant practical importance and application value. Currently, most mainstream oxygen-deficient nitrogen generators on the market are based on pressure swing adsorption (PSA) technology. They utilize the difference in adsorption capacity of carbon molecular sieves for oxygen and nitrogen, and achieve oxygen-nitrogen separation through a cyclic process of pressure adsorption and depressurization desorption, thereby producing oxygen-deficient nitrogen.

[0003] However, in the existing technology, the oxygen-deficient nitrogen generator needs to be frequently stopped during operation to desorb oxygen from the carbon molecular sieve, which not only leads to low production efficiency but also causes energy waste. At the same time, the frequent start-up and shutdown operations will increase the wear and tear on equipment components and shorten the service life of the equipment.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A fully interface-integrated oxygen-deficient nitrogen generator, comprising a pair of adsorption towers.

[0006] Each of the adsorption towers is equipped with a pair of carbon molecular sieves that are rotatably installed inside. The outlet of the adsorption tower is equipped with a sealing cover, and a pair of pistons are slidably installed on the sealing cover. When the oxygen-nitrogen mixture enters the adsorption tower, the internal pressure of the adsorption tower increases, causing the carbon molecular sieves to adsorb oxygen, and the pistons move upward to allow nitrogen to be discharged from one of the discharge positions. A connecting rod is installed on the top of the piston, and a rocker plate is rotatably installed on the shell of a pair of adsorption towers. The two ends of the rocker plate are slidably connected to the connecting rod. When one piston moves up, it drives the piston on the other adsorption tower to move down, thus switching the working state. A connecting rod is installed at the bottom of the piston, and a rocker arm is rotatably installed at the end of the connecting rod. A swing arm is rotatably installed on the rocker arm, and a sealing plate is installed at the center of rotation of the swing arm. A through groove is opened on the sealing plate, and the through groove is staggered with another discharge position. The piston moves down so that the two rotate in the same direction, which facilitates oxygen discharge. A synchronization plate is slidably mounted on the carbon molecular sieve, with the bottom of the synchronization plate in contact with the bottom of the swing rod. The downward rotation of the swing rod drives the carbon molecular sieve to rotate, facilitating gas flow.

[0007] In a preferred embodiment of the present invention, the bottom of the adsorption tower is equipped with four support legs, with cross ribs installed between adjacent support legs on the front and rear sides, and crossbeams installed between adjacent support legs on the left and right sides. Anti-slip grooves are installed at the bottom of the support legs.

[0008] In a preferred embodiment of the present invention, a conveying pipe is installed at the bottom of the adsorption tower, an electronic valve is installed on the conveying pipe, a nitrogen emission pipe is installed on the sealing cover, a connecting flange is installed at the end of the nitrogen emission pipe, and a piston separates the nitrogen emission pipe from the inner cavity of the adsorption tower.

[0009] In a preferred embodiment of the present invention, a sealing groove is installed at the bottom of the sealing cover, and the piston is slidably disposed inside the sealing groove, and the end of the sealing groove is chamfered.

[0010] In a preferred embodiment of the present invention, a positioning cover is installed on the inner wall of the sealing cover, and a baffle is vertically slidably installed inside the positioning cover. A positioning rod is installed at the bottom of the baffle, and the positioning rod passes through the positioning cover. The bottom of the positioning rod is connected to the piston. A positioning spring is provided at the top of the baffle, and the top of the positioning spring is engaged with the inner wall of the positioning cover. The compression direction of the positioning spring and the movement direction of the positioning rod are both on the same straight line. The positioning spring is used to drive the piston to initially be located in the middle position of the sealing groove.

[0011] In a preferred embodiment of the present invention, a timing frame is installed on the sealing cover. The timing frame is T-shaped and a rocker is rotatably mounted on the timing frame. The rocker has strip grooves at both ends, and a sliding rod is slidably mounted on the strip groove. The two ends of the sliding rod are installed in grooves opened on the side wall of the connecting rod, and the bottom of the connecting rod movably penetrates the sealing cover.

[0012] In a preferred embodiment of the present invention, a limiting seat is movably installed through the side wall of the connecting rod, and the outer side wall of the limiting seat is installed on the inner cavity of the adsorption tower. A synchronous shaft is installed at the rotation center of the swing rod, a fixed seat is installed on the side wall of the adsorption tower, and an oxygen discharge pipe is provided on the fixed seat. The synchronous shaft is rotatably connected to the fixed seat, and the side wall of the synchronous shaft is connected to the sealing plate. The sealing plate is movably arranged in the groove opened in the fixed seat, and the through groove corresponds to the oxygen discharge pipe.

[0013] In a preferred embodiment of the present invention, the adsorption tower is provided with an installation plate, and a pair of carbon molecular sieves are rotatably installed at the bottom of the installation plate. The synchronization plate is cross-shaped, and top rods are installed at both ends of the synchronization plate. Ball bearings are installed at the ends of the top rods, and the ball bearings are attached to the outer shell of the carbon molecular sieves.

[0014] In a preferred embodiment of the present invention, a limiting rod is movably installed through the synchronization plate. The bottom of the limiting rod is mounted on the mounting plate and is in a vertical state. A limiting spring is sleeved on the limiting rod. One end of the limiting spring is engaged with the mounting plate, and the other end of the limiting spring is engaged with the synchronization plate. The limiting spring is used to limit the initial position of the synchronization plate.

[0015] In a preferred embodiment of the present invention, a pair of mounting seats are installed at the bottom of the mounting plate, and a mounting shaft is installed on the pair of mounting seats. The end of the mounting shaft is rotatably connected to the carbon molecular sieve. A torsion spring is sleeved on the outer wall of the mounting shaft. One end of the torsion spring is engaged with the carbon molecular sieve, and the other end of the torsion spring is engaged with the mounting seat. The torsion spring is used to drive the carbon molecular sieve to adhere to the bottom of the mounting plate without external force.

[0016] Compared with the prior art, the present invention has the following advantages: This invention employs a design with two adsorption towers operating alternately. One tower focuses on nitrogen production, while the other is responsible for the emission of oxygen adsorbed by the carbon molecular sieve. Through the coordinated action of components such as the rocker arm and connecting rod, precise and rapid switching between the two towers' operating states is achieved. This effectively avoids the drawback of requiring a single adsorption tower to be shut down for oxygen desorption, ensuring a continuous and stable production of oxygen-deficient nitrogen and significantly improving production efficiency, thus enabling comprehensive integration of the production process. Simultaneously, the pressurized design within the adsorption tower activates the adsorption performance of the carbon molecular sieve, and the gaps created by the rotation of the carbon molecular sieve facilitate gas flow and emission from the bottom of the tower, further enhancing the efficiency and thoroughness of oxygen-nitrogen separation. This allows for the removal of oxygen adsorbed by the carbon molecular sieve, improving overall operational efficiency.

[0017] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] In the attached diagram: Figure 1 A front view of a fully integrated oxygen-nitrogen generator; Figure 2 A side view of a lean nitrogen generator with full interface fusion; Figure 3 A cross-sectional view of a fully integrated oxygen-nitrogen generator; Figure 4 A partial structural diagram of a lean oxygen nitrogen generator with full interface fusion; Figure 5 A lean oxygen nitrogen generator with full interface fusion Figure 4 Enlarged view of point A in the middle; Figure 6 This is an enlarged view of point A in Figure B, which shows a fully integrated oxygen-nitrogen generator. Figure 7 An assembly diagram of the adsorption tower and connecting rod for a fully interface-integrated oxygen-nitrogen generator; Figure 8 This is a structural diagram of the carbon molecular sieve section in a fully interface-integrated oxygen-nitrogen generator. Figure 9 This is an assembly diagram of the carbon molecular sieve section of a fully interface-integrated oxygen-deficient nitrogen generator.

[0019] In the diagram: 1. Adsorption tower; 2. Support leg; 3. Cross rib; 4. Crossbeam; 5. Conveying pipe; 6. Electronic valve; 7. Sealing cover; 8. Nitrogen emission pipe; 9. Connecting flange; 10. Sealing groove; 11. Piston; 12. Positioning cover; 13. Positioning rod; 14. Baffle; 15. Positioning spring; 16. Connecting rod; 17. Rocker; 18. Synchronizing frame; 19. Strip groove; 20. Sliding rod; 21. Connecting rod; 22. Limiting seat; 23. Rocker arm; 24. Swing rod; 25. Synchronizing shaft; 26. Through groove; 27. Fixed seat; 28. Oxygen emission pipe; 29. ​​Sealing plate; 30. Mounting plate; 31. Carbon molecular sieve; 32. Shaft clamp; 33. Clamping seat; 34. Torsion spring; 35. Synchronizing plate; 36. Limiting rod; 37. Limiting spring; 38. Top rod; 39. Ball bearing. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention. Example 1:

[0021] like Figures 1 to 9 As shown, a lean oxygen nitrogen generator with full interface fusion includes a pair of adsorption towers 1, characterized in that: Inside each adsorption tower 1, a pair of carbon molecular sieves 31 are rotatably installed. The outlet of the adsorption tower 1 is equipped with a sealing cover 7, and a pair of pistons 11 are slidably arranged on the sealing cover 7. When the oxygen-nitrogen mixture enters the adsorption tower 1, the internal pressure of the adsorption tower 1 increases, causing the carbon molecular sieves 31 to adsorb oxygen, and the pistons 11 move upward to allow nitrogen to be discharged from one of the discharge positions. A connecting rod 16 is installed on the top of the piston 11, and a rocker plate 17 is rotatably installed on the outer shell of a pair of adsorption towers 1. The two ends of the rocker plate 17 are slidably connected to the connecting rod 16 respectively. When one piston 11 moves up, it drives the piston 11 on the other adsorption tower 1 to move down, thus switching the working state. A connecting rod 21 is installed at the bottom of the piston 11, and a rocker arm 23 is rotatably installed at the end of the connecting rod 21. A rocker arm 24 is rotatably installed on the rocker arm 23, and a sealing plate 29 is installed at the center of rotation of the rocker arm 24. A through groove 26 is opened on the sealing plate 29, and the through groove 26 is staggered with another discharge position. The piston 11 moves down so that the two rotate in correspondence, which facilitates oxygen discharge. A synchronization plate 35 is slidably mounted on the carbon molecular sieve 31, and the bottom of the synchronization plate 35 is in contact with the bottom of the swing rod 24. The swing rod 24 rotates downward to drive the carbon molecular sieve 31 to rotate, which facilitates gas flow.

[0022] like Figures 1 to 9 As shown in the specific embodiment, the adsorption tower 1 has four support legs 2 installed at its bottom. Cross ribs 3 are installed between adjacent support legs 2 on the front and rear sides, and crossbeams 4 are installed between adjacent support legs 2 on the left and right sides. Anti-slip grooves are installed at the bottom of the support legs 2. The four support legs 2 provide stable support for the device, the cross ribs 3 and crossbeams 4 further enhance the stability of the support structure, and the anti-slip grooves prevent sliding and displacement during operation, collectively improving the overall structural stability of the device and ensuring its long-term stable operation.

[0023] like Figures 1 to 9 As shown, furthermore, a delivery pipe 5 is installed at the bottom of the adsorption tower 1, an electronic valve 6 is installed on the delivery pipe 5, a nitrogen discharge pipe 8 is installed on the sealing cover 7, and a connecting flange 9 is installed at the end of the nitrogen discharge pipe 8. The nitrogen discharge pipe 8 is isolated from the inner cavity of the adsorption tower 1 by a piston 11. The delivery pipe 5 realizes the stable delivery of oxygen-nitrogen mixture, the electronic valve 6 can accurately control the on / off state and flow rate of gas delivery, the nitrogen discharge pipe 8 is used for nitrogen discharge, the connecting flange 9 facilitates connection with external equipment, and the piston 11 effectively blocks the nitrogen discharge channel, improving the controllability and practicality of the device. Example 2:

[0024] The difference between the above embodiments and this embodiment is that: Figures 1 to 9 As shown, a sealing groove 10 is installed at the bottom of the sealing cover 7, and the piston 11 is slidably disposed inside the sealing groove 10, with the ends of the sealing groove 10 being chamfered. The sealing groove 10 provides a stable sliding trajectory for the piston 11, ensuring the smooth sliding and sealing of the piston 11, while the chamfered ends ensure the smoothness of nitrogen emission and state switching.

[0025] like Figures 1 to 9As shown, in a specific embodiment, a positioning cover 12 is installed on the inner wall of the sealing cover 7. A baffle 14 is vertically slidably installed inside the positioning cover 12. A positioning rod 13 is installed at the bottom of the baffle 14, and the positioning rod 13 passes through the positioning cover 12. The bottom of the positioning rod 13 is connected to the piston 11. A positioning spring 15 is provided at the top of the baffle 14, and the top of the positioning spring 15 is engaged with the inner wall of the positioning cover 12. The compression direction of the positioning spring 15 and the movement direction of the positioning rod 13 are both on the same straight line. The positioning spring 15 is used to drive the piston 11 to initially be located in the middle position of the sealing groove 10. The positioning cover 12 provides a mounting carrier for the baffle 14, the positioning rod 13 and the positioning spring 15. The positioning spring 15 drives the piston 11 to maintain its initial position through the baffle 14 and the positioning rod 13, ensuring the accuracy of the piston 11's working switch and improving the stability and reliability of the device.

[0026] like Figures 1 to 9 As shown, a synchronization frame 18 is further installed on the sealing cover 7. The synchronization frame 18 is T-shaped, and a rocker arm 17 is rotatably mounted on the synchronization frame 18. Slotted grooves 19 are formed at both ends of the rocker arm 17, and sliding rods 20 are slidably mounted on the slots 19. The two ends of the sliding rods 20 are installed in grooves formed on the side wall of the connecting rod 16, and the bottom of the connecting rod 16 passes through the sealing cover 7. The synchronization frame 18 provides stable rotational support for the rocker arm 17. The sliding cooperation between the slotted grooves 19 and the sliding rods 20 ensures smooth linkage between the rocker arm 17 and the connecting rod 16, avoiding jamming during linkage, and further improving the synchronization and stability of the switching of the working states of the two adsorption towers 1. Example 3:

[0027] The difference between the above embodiments and this embodiment is that: Figures 1 to 9 As shown, a limiting seat 22 is movably installed through the side wall of the connecting rod 21, and the outer side wall of the limiting seat 22 is installed on the inner cavity of the adsorption tower 1. A synchronous shaft 25 is installed at the rotation center of the swing rod 24, and a fixed seat 27 is installed on the side wall of the adsorption tower 1. An oxygen discharge pipe 28 is provided on the fixed seat 27. The synchronous shaft 25 is rotatably connected to the fixed seat 27, and the side wall of the synchronous shaft 25 is connected to the sealing plate 29. The sealing plate 29 is movably disposed in the groove opened in the fixed seat 27, and the through groove 26 corresponds to the oxygen discharge pipe 28. The limiting seat 22 limits the movement of the connecting rod 21, ensuring that the connecting rod 21 moves vertically. The synchronous shaft 25 ensures that the swing rod 24 and the sealing plate 29 rotate synchronously. The fixed seat 27 provides an installation carrier for the sealing plate 29 and the oxygen discharge pipe 28. The cooperation between the through groove 26 and the oxygen discharge pipe 28 enables precise control of the oxygen discharge channel, improving the efficiency and accuracy of oxygen discharge.

[0028] like Figures 1 to 9As shown, in a specific embodiment, an adsorption tower 1 is provided with an installation plate 30, and a pair of carbon molecular sieves 31 are rotatably installed at the bottom of the installation plate 30. The synchronization plate 35 is cross-shaped, and top rods 38 are installed at both ends of the synchronization plate 35. Ball bearings 39 are installed at the ends of the top rods 38 and are attached to the outer shell of the carbon molecular sieves 31. A limiting rod 36 is movably installed through the synchronization plate 35. The bottom of the limiting rod 36 is installed on the installation plate 30 and the limiting rod 36 is in a vertical state. A limiting spring 37 is sleeved on the limiting rod 36. One end of the limiting spring 37 is engaged with the installation plate 30, and the other end of the limiting spring 37 is engaged with the synchronization plate 35. The limiting spring 37 is used to limit the initial position of the synchronization plate 35. The mounting plate 30 provides a mounting carrier for components such as carbon molecular sieve 31 and limiting rod 36. The cross-shaped synchronization plate 35 can drive the two carbon molecular sieves 31 to rotate synchronously. The ball bearing 39 at the end of the top rod 38 reduces friction with the carbon molecular sieve 31. The limiting rod 36 ensures the vertical movement of the synchronization plate 35. The limiting spring 37 realizes the automatic reset of the synchronization plate 35. Together, they improve the smoothness of the rotation of the carbon molecular sieve 31 and the accuracy of the reset, ensuring the stability of adsorption and gas flow.

[0029] like Figures 1 to 9 As shown, furthermore, a pair of retaining seats 33 are installed at the bottom of the mounting plate 30, and retaining shafts 32 are installed on the retaining seats 33. The ends of the retaining shafts 32 are rotatably connected to the carbon molecular sieve 31. A torsion spring 34 is sleeved on the outer wall of the retaining shaft 32, and one end of the torsion spring 34 is engaged with the carbon molecular sieve 31, while the other end is engaged with the retaining seat 33. The torsion spring 34 is used to drive the carbon molecular sieve 31 to adhere to the bottom of the mounting plate 30 without external force. The retaining seats 33 and retaining shafts 32 provide stable rotational support for the carbon molecular sieve 31. The torsion spring 34 can drive the carbon molecular sieve 31 to automatically reset and adhere to the mounting plate 30, ensuring the stability of the initial state of the carbon molecular sieve 31, avoiding gaps from affecting the adsorption effect, and improving the adsorption efficiency.

[0030] The implementation principle of the fully interface-integrated oxygen-deficient nitrogen generator of the present invention is as follows: First, oxygen and nitrogen mixture is transported through the bottom conveying pipe 5 of the adsorption tower 1. During the transport process, the on / off state and flow rate of the gas can be controlled by the electronic valve 6 on the conveying pipe 5. The four support legs 2 at the bottom of the adsorption tower 1 provide stable support. The cross ribs 3 between adjacent support legs 2 on the front and rear sides and the crossbeams 4 between adjacent support legs 2 on the left and right sides further enhance the overall structural stability of the device. The anti-slip grooves at the bottom of the support legs 2 prevent the device from sliding or shifting during operation.

[0031] When the oxygen-nitrogen mixture enters the adsorption tower 1, the pressure inside the adsorption tower 1 gradually increases to achieve pressurization. Under pressurized conditions, the adsorption performance of the carbon molecular sieve 31 is activated, and the carbon molecular sieve 31 begins to efficiently adsorb oxygen in the mixture. At the same time, the pressurization force inside the adsorption tower 1 pushes a pair of pistons 11 inside the outlet sealing cover 7 to move upward. The pistons 11 are slidably set in the sealing groove 10 at the bottom of the sealing cover 7. The chamfering treatment at the end of the sealing groove 10 facilitates the smooth sliding of the pistons 11. After the pistons 11 move upward, they release the obstruction to the nitrogen discharge pipe 8, allowing the adsorbed nitrogen to be discharged from the corresponding discharge position through the nitrogen discharge pipe 8 and the connecting flange 9 at the end, thus achieving the initial separation of nitrogen.

[0032] Two adsorption towers 1 alternately perform two core tasks. One adsorption tower 1 focuses on the preparation of nitrogen, while the other is responsible for the emission of oxygen adsorbed and contained in the carbon molecular sieve 31. The oxygen emission pipe 28 is connected to an external negative pressure device to provide power for the oxygen emission.

[0033] The specific emission process is as follows: The connecting rod 16 at the top of the piston 11 is connected to the rocker plate 17 rotatably mounted on the synchronous frame 18 on the sealing cover 7. The strip grooves 19 at both ends of the rocker plate 17 are slidably engaged with the slide rod 20 in the groove on the side wall of the connecting rod 16. When the piston 11 on one of the adsorption towers 1 moves upward, the adsorption tower 1 enters the nitrogen preparation state. At the same time, the rocker plate 17 is driven to rotate around the synchronous frame 18 through the connecting rod 16, which in turn drives the piston 11 on the other adsorption tower 1 to move downward synchronously, so that it enters the oxygen emission state. This realizes the alternating switching of the working states of the two adsorption towers 1, ensuring that the device continuously and stably produces nitrogen.

[0034] Meanwhile, the positioning spring 15 inside the positioning cover 12 on the inner side wall of the sealing cover 7 always exerts an elastic force on the baffle 14. The baffle 14 is connected to the piston 11 through the positioning rod 13. The compression direction of the positioning spring 15 is consistent with the movement direction of the positioning rod 13, which can drive the piston 11 to be located in the middle of the sealing groove 10 in the initial state, ensuring the accuracy of the switching process.

[0035] When the piston 11 on the adsorption tower 1, which is in the oxygen emission state, moves downward, the connecting rod 21 at its bottom moves downward synchronously. Under the limiting action of the limiting seat 22, the connecting rod 21 remains vertically moving, and the rocker arm 23 rotatably connected to the end of the connecting rod 21 rotates accordingly, thereby driving the swing rod 24 and the synchronous shaft 25 rotatably mounted on the rocker arm 23 to rotate. The sealing plate 29 connected to the synchronous shaft 25 rotates synchronously, so that the through groove 26 opened on the sealing plate 29 and the oxygen emission pipe 28 on the fixed seat 27 change from an interlaced state to a corresponding state. At this time, under the action of the negative pressure device connected to the oxygen emission pipe 28, the oxygen adsorbed and contained by the carbon molecular sieve 31 is quickly extracted and discharged through the oxygen emission pipe 28, efficiently completing the oxygen-nitrogen separation process and preparing for the next round of nitrogen preparation.

[0036] During the downward rotation of the swing rod 24, the bottom of the swing rod 24 is in contact with the synchronization plate 35, which will drive the cross-shaped synchronization plate 35 to move downward along the limiting rod 36. The limiting spring 37 on the outside is compressed. The top rods 38 at both ends of the synchronization plate 35 are in contact with the outer shell of the carbon molecular sieve 31 through the ball bearings 39. When the synchronization plate 35 moves downward, it will push the carbon molecular sieve 31 to rotate around the retaining shaft 32. The torsion spring 34 on the outside of the retaining shaft 32 is twisted, so that the carbon molecular sieve 31 moves away from the mounting plate 30 and forms a gap with it. This gap can facilitate the smooth flow and discharge of gas at the bottom of the adsorption tower 1, improving the adsorption separation efficiency. When the swing rod 24 is reset, the elastic force of the limiting spring 37 pushes the synchronization plate 35 to move upward and reset. The torsion spring 34 drives the carbon molecular sieve 31 to rotate around the retaining shaft 32, so that it is re-attached to the bottom of the mounting plate 30, eliminating the gap and restoring the initial state, preparing for the next round of adsorption separation. Through the coordinated cooperation of various components, the efficient preparation of oxygen-deficient nitrogen gas with full interface fusion of the device is realized.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully interface-integrated oxygen-deficient nitrogen generator, comprising a pair of adsorption towers (1), characterized in that: Each of the adsorption towers (1) is rotatably equipped with a pair of carbon molecular sieves (31). The outlet of the adsorption tower (1) is equipped with a sealing cover (7), and a pair of pistons (11) are slidably arranged on the sealing cover (7). When the oxygen-nitrogen mixture enters the adsorption tower (1), the pressure inside the adsorption tower (1) increases, causing the carbon molecular sieves (31) to adsorb oxygen, and the pistons (11) move upward so that the nitrogen is discharged from one of the discharge positions. A connecting rod (16) is installed on the top of the piston (11), and a rocker plate (17) is rotatably installed on the outer shell of a pair of adsorption towers (1). The two ends of the rocker plate (17) are slidably connected to the connecting rod (16). When one piston (11) moves up, it drives the piston (11) on the other adsorption tower (1) to move down, thus switching the working state. The piston (11) is equipped with a connecting rod (21) at the bottom, and a rocker arm (23) is rotatably mounted at the end of the connecting rod (21). A rocker arm (24) is rotatably mounted on the rocker arm (23), and a sealing plate (29) is mounted at the center of rotation of the rocker arm (24). A through groove (26) is provided on the sealing plate (29), and the through groove (26) is staggered with another discharge position. The piston (11) moves down so that the two rotate in correspondence, which facilitates oxygen discharge. A synchronization plate (35) is slidably arranged on the carbon molecular sieve (31), and the bottom of the synchronization plate (35) is in contact with the bottom of the swing rod (24). The swing rod (24) rotates downward to drive the carbon molecular sieve (31) to rotate, which facilitates gas flow.

2. The oxygen-deficient nitrogen generator with full interface fusion according to claim 1, characterized in that, The adsorption tower (1) is equipped with four support legs (2) at the bottom. Cross ribs (3) are installed between adjacent support legs (2) on the front and rear sides, and cross beams (4) are installed between adjacent support legs (2) on the left and right sides. Anti-slip grooves are installed at the bottom of the support legs (2).

3. The oxygen-deficient nitrogen generator with full interface fusion according to claim 1, characterized in that, The bottom of the adsorption tower (1) is equipped with a conveying pipe (5), an electronic valve (6) is installed on the conveying pipe (5), a nitrogen discharge pipe (8) is installed on the sealing cover (7), and a connecting flange (9) is installed at the end of the nitrogen discharge pipe (8). The nitrogen discharge pipe (8) is isolated from the inner cavity of the adsorption tower (1) by a piston (11).

4. The fully interface-integrated oxygen-deficient nitrogen generator according to claim 1, characterized in that, The sealing cover (7) has a sealing groove (10) installed at the bottom, and the piston (11) is slidably disposed inside the sealing groove (10), and the end of the sealing groove (10) is chamfered.

5. A fully interface-integrated oxygen-deficient nitrogen generator according to claim 1, characterized in that, A positioning cover (12) is installed on the inner wall of the sealing cover (7). A baffle (14) is vertically slidably installed inside the positioning cover (12). A positioning rod (13) is installed at the bottom of the baffle (14). The positioning rod (13) is movably connected to the positioning cover (12). The bottom of the positioning rod (13) is connected to the piston (11). A positioning spring (15) is provided at the top of the baffle (14). The top of the positioning spring (15) is engaged with the inner wall of the positioning cover (12). The compression direction of the positioning spring (15) and the movement direction of the positioning rod (13) are both on the same straight line. The positioning spring (15) is used to drive the piston (11) to be initially located in the middle of the sealing groove (10).

6. The fully interface-integrated oxygen-deficient nitrogen generator according to claim 1, characterized in that, A timing frame (18) is installed on the sealing cover (7). The timing frame (18) is T-shaped. A rocker plate (17) is rotatably installed on the timing frame (18). A strip groove (19) is opened at both ends of the rocker plate (17). A slide rod (20) is slidably installed on the strip groove (19). The two ends of the slide rod (20) are installed in the groove opened on the side wall of the connecting rod (16). The bottom of the connecting rod (16) is movably connected to the sealing cover (7).

7. A fully interface-integrated oxygen-deficient nitrogen generator according to claim 1, characterized in that, The connecting rod (21) is movably installed through the side wall of the limiting seat (22), and the outer side wall of the limiting seat (22) is installed on the inner cavity of the adsorption tower (1). The swing rod (24) is equipped with a synchronous shaft (25) at its rotation center. The adsorption tower (1) is equipped with a fixed seat (27), and an oxygen discharge pipe (28) is provided on the fixed seat (27). The synchronous shaft (25) is rotatably connected to the fixed seat (27), and the side wall of the synchronous shaft (25) is connected to the sealing plate (29). The sealing plate (29) is movably arranged in the groove opened in the fixed seat (27), and the through groove (26) is staggered with the oxygen discharge pipe (28).

8. A fully interface-integrated oxygen-deficient nitrogen generator according to claim 1, characterized in that, The adsorption tower (1) is provided with an installation plate (30), and a pair of carbon molecular sieves (31) are rotatably installed at the bottom of the installation plate (30). The synchronization plate (35) is cross-shaped, and top rods (38) are installed at both ends of the synchronization plate (35). Ball bearings (39) are installed at the ends of the top rods (38), and the ball bearings (39) are attached to the outer shell of the carbon molecular sieves (31).

9. A fully interface-integrated oxygen-deficient nitrogen generator according to claim 8, characterized in that, A limiting rod (36) is movably installed through the synchronization plate (35). The bottom of the limiting rod (36) is installed on the mounting plate (30), and the limiting rod (36) is in a vertical state. A limiting spring (37) is sleeved on the limiting rod (36). One end of the limiting spring (37) is engaged with the mounting plate (30), and the other end of the limiting spring (37) is engaged with the synchronization plate (35). The limiting spring (37) is used to limit the initial position of the synchronization plate (35).

10. A fully interface-integrated oxygen-deficient nitrogen generator according to claim 8, characterized in that, A pair of mounting bases (33) are installed at the bottom of the mounting plate (30). A mounting shaft (32) is installed on the pair of mounting bases (33), and the end of the mounting shaft (32) is rotatably connected to the carbon molecular sieve (31). A torsion spring (34) is sleeved on the outer wall of the mounting shaft (32), and one end of the torsion spring (34) is clamped on the carbon molecular sieve (31), and the other end of the torsion spring (34) is clamped on the mounting base (33). The torsion spring (34) is used to drive the carbon molecular sieve (31) to adhere to the bottom of the mounting plate (30) without external force.

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