Intelligent self-adaptive pressure swing adsorption nitrogen making machine

Abstract

The invention belongs to the field of intelligent adsorption nitrogen making machines, and particularly relates to an intelligent self-adaptive pressure swing adsorption nitrogen making machine which is characterized in that two alternate nitrogen making pressure swing adsorption tank bodies are arranged between an air filtering system and a nitrogen storage tank in a communicating mode, and each pressure swing adsorption tank body is provided with a plurality of sieve plates capable of sliding to be close to each other; molecular sieve particles are filled in the pressure swing adsorption tank body among the plurality of sieve plates, a plurality of conical sleeves are arranged on the upper end surface of each sieve plate, a spiral transmission plate is rotatably arranged in each conical sleeve, and an annular inclined sieve plate is arranged on the excircle surface of the upper end of each conical sleeve; annular plates are arranged between the conical sleeves and the annular inclined sieve plates, and a plurality of feeding ports are formed in the outer circle face of the lower end of each conical sleeve. By arranging the conical sleeve and other components, the molecular sieve in the pressure swing adsorption tank can be stirred up and down, so that the desorption efficiency of the molecular sieve is improved, and meanwhile, dust generated by crushing in the molecular sieve can be separated.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent adsorption nitrogen generators, and particularly relates to an intelligent adaptive pressure swing adsorption nitrogen generator. Background Art

[0002] Pressure swing adsorption is a new gas separation technology. Its principle is to separate gas mixtures by utilizing the differences in the "adsorption" properties of molecular sieves for different gas molecules. Pressure swing adsorption is a new gas separation technology. Its principle is to separate gas mixtures by utilizing the differences in the "adsorption" properties of molecular sieves for different gas molecules. It uses air as raw material and separates nitrogen and oxygen in the air by utilizing the selective adsorption properties of a highly efficient and highly selective solid adsorbent for nitrogen and oxygen.

[0003] The intelligent adaptive pressure swing adsorption nitrogen generator disclosed in patent application number CN202010568182.8 includes a nitrogen generator body, an air compressor, a nitrogen purification device, and a nitrogen storage tank. The air inlet of the nitrogen generator body is fixedly connected to a first connecting pipe, the other end of the first connecting pipe is fixedly connected to the air outlet end of the air compressor, a connecting branch pipe is fixedly connected to the side of the first connecting pipe, a pressure detector is fixedly connected to the top of the connecting branch pipe, and a first flow limiting control valve is arranged on the side of the first connecting pipe and close to the nitrogen generator body. The air outlet end of the nitrogen generator body is connected to the nitrogen purification device through a pipeline.

[0004] In the prior art, by setting flow limiting control valves at both ends of the nitrogen generator, the air intake and air output of the nitrogen generator can be well controlled, thereby ensuring the purity of the nitrogen generator. However, there are still deficiencies: First, during the nitrogen production process of the existing pressure swing adsorption nitrogen generator, the strong wind pressure in the pipe body will cause a strong impact on the molecular sieve, resulting in the fragmentation of the molecular sieve into powdery molecular sieve particles. If these molecular sieve particles are not screened and collected in a timely manner, it will cause pipeline blockage in the long term, affecting the normal operation of the nitrogen generator; Secondly, during the operation of the existing pressure swing adsorption nitrogen generator, the diameter of the molecular sieve particles is too single, so that impurities such as oxygen molecules in the air cannot be absorbed to a greater extent, resulting in poor purity of the produced nitrogen and affecting the overall production quality; Secondly, when the existing pressure swing adsorption nitrogen generator performs pressure reduction and desorption in the molecular sieve, the molecular sieve is always in a static state, resulting in only a small amount of molecular sieve particles being in the pressure reduction and desorption state. Some stacked molecular sieve particles cannot be effectively pressure-reduced and desorbed, thus affecting the overall pressure swing adsorption nitrogen production efficiency. At the same time, when the molecular sieve is replaced, it needs to be replaced uniformly, and these molecular sieve particles that have not been fully pressure-reduced and desorbed will also be wasted; Finally, when the existing pressure swing adsorption nitrogen production device collects molecular sieve dust, it needs to stop production, making the collection process of molecular sieve dust rather cumbersome and requiring excessive manual participation, thus affecting the normal nitrogen production. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides an intelligent adaptive pressure swing adsorption nitrogen generator. Through the setting of components such as conical sleeves, the present invention can stir the molecular sieve inside the pressure swing adsorption tank up and down, and at the same time can separate the dust generated by the fragmentation inside the molecular sieve and collect the molecular sieve dust, etc., solving the technical problems that the existing nitrogen generators cannot clean themselves and have poor nitrogen production efficiency.

[0006] In order to achieve the above object, the present invention provides the following technical solution: an intelligent adaptive pressure swing adsorption nitrogen generator, including an air compressor, an air compression tank, an air filtration system and a nitrogen storage tank. Two alternating nitrogen production pressure swing adsorption tanks are connected and arranged between the air filtration system and the nitrogen storage tank. The gas inside each pressure swing adsorption tank flows from bottom to top. Each pressure swing adsorption tank is provided with a plurality of sieve plates that can slide close to each other. Molecular sieve particles are filled between the plurality of sieve plates inside the pressure swing adsorption tank. Each upper end surface of the sieve plates is provided with a plurality of conical sleeves. A spiral transmission plate is rotatably arranged inside each conical sleeve. The plurality of spiral transmission plates in the same vertical column rotate synchronously. An annular inclined sieve plate is arranged on the outer circular surface of the upper end of each conical sleeve. An annular plate is arranged between the conical sleeve and the annular inclined sieve plate. A plurality of grooves are arranged on the inner circular surface of the top of each conical sleeve. A plurality of protrusions that are in extrusion friction with the grooves are arranged on the top blades of each spiral transmission plate. A plurality of feed ports are arranged on the outer circular surface of the lower end of each conical sleeve.

[0007] Through the setting of components such as conical sleeves and spiral transmission plates, the molecular sieve on each layer of sieve plate can be circulated up and down, making the desorption efficiency of the molecular sieve higher. At the same time, it can effectively screen the molecular sieve particles, making molecular sieve particles of different sizes stratified, and can also separate and discharge the molecular sieve dust to prevent pipeline blockage. Optionally, the plurality of sieve plates include a second sieve plate slidably arranged inside the pressure swing adsorption tank. A first sieve plate is slidably arranged inside the pressure swing adsorption tank above the second sieve plate. A third sieve plate is slidably arranged inside the pressure swing adsorption tank below the second sieve plate. A sleeve is fixedly arranged on the lower end surface of the third sieve plate. A breathable cloth is arranged inside the sleeve below the third sieve plate. A plurality of discharge holes are arranged on the inner side wall of the sleeve outside the breathable cloth. A vibration dust collection component is arranged below the breathable cloth.

[0008] By setting components such as the pressure swing adsorption tank body, the first sieve plate, and the breathable cloth, it is possible to extrude the molecular sieve during pressurized adsorption nitrogen production, improve the density between the molecular sieves, increase the purity of nitrogen production, and stratify the molecular sieve particles during depressurization desorption, increasing the density between the molecular sieves, thereby improving the desorption efficiency of the molecular sieve.

[0009] Optionally, the diameters of the sieve holes on the first sieve plate, the second sieve plate, and the third sieve plate decrease sequentially from top to bottom, and the sizes of the molecular sieve particles placed on the upper end surfaces of the first sieve plate, the second sieve plate, and the third sieve plate decrease sequentially from top to bottom.

[0010] Through the settings of through holes with different diameters on the first sieve plate, the second sieve plate, and the third sieve plate, it is possible to effectively stratify the molecular sieve particles. At the same time, only by adding molecular sieves with larger particles at the top, it can ensure the sufficiency of the molecular sieve inside the pressure swing adsorption tank body.

[0011] Optionally, the vibration dust collection component includes an annular inclined plate provided on the lower end surface of the sleeve. The annular inclined plate is in sliding contact with the pressure swing adsorption tank body. Above the annular inclined plate, a first limiting ring is provided on the inner side wall of the pressure swing adsorption tank body, and a first sealing pad is provided between the lower end surface of the first limiting ring and the pressure swing adsorption tank body and the sleeve.

[0012] Optionally, the vibration dust collection component further includes a sliding plate slidably provided below the annular inclined plate. A multi-faceted rod that can vibrate vertically is provided on the upper end surface of the sliding plate. A reinforcing ring sleeve is provided on the upper end surface of the sliding plate outside each multi-faceted rod. A sliding support plate is provided at the top of the multi-faceted rod. An elastic cover is hermetically provided outside the sliding support plate. A plurality of high-frequency vibrators are provided between the sliding support plate and the elastic cover on the upper end surface of the sliding support plate. A plurality of first convex particles are provided on the outer circumferential surface of the elastic cover, and each first convex particle is in sliding contact with the inner wall of the breathable cloth.

[0013] Through the settings of components such as the multi-faceted rod, the sliding support plate, and the elastic cover, it is possible to drive the breathable cloth to vibrate, thereby accelerating the falling of the molecular sieve dust on the upper end surface of the breathable cloth into the feed port for collection and storage.

[0014] Optionally, the vibration dust collection component further includes an arc-shaped claw rod rotatably provided on the outer side wall of each multi-faceted rod. A hemispherical protrusion is provided at the top of each arc-shaped claw rod, and a plurality of second convex particles are provided on the outer circumferential surface of each hemispherical protrusion. The plurality of second convex particles are in sliding contact with the inner wall of the breathable cloth.

[0015] Through the settings of components such as the arc-shaped claw rod and the hemispherical protrusion, it is possible to uniformly support the breathable cloth, increasing the gas dispersion effect of the breathable cloth and the air permeability of the breathable cloth.

[0016] Optionally, the vibrating dust collecting assembly also includes a long groove arranged on the side wall of the polygonal rod, and a sliding strip is slidably arranged inside each of the long grooves. The lower end face of each sliding strip is fixedly connected to the upper end face of its adjacent reinforcement ring sleeve, and a first rotating connecting rod is rotatably connected between every two adjacent arc-shaped claw rods and the sliding strips.

[0017] By setting up components such as the long groove, the sliding strip and the first rotating connecting rod, the multi-faceted rod can drive the arc-shaped claw rod to rotate up and down when vibrating vertically up and down, thereby forming an outward pushing effect on the inner end surface of the breathable cloth, further accelerating the falling and collection of the molecular sieve dust on the upper end surface of the breathable cloth.

[0018] Optionally, the upper end surface of the sliding plate is evenly provided with a plurality of sliding grooves in an annular shape, a sliding block is slidably provided inside each sliding groove, and a second rotating connecting rod is rotatably connected between each sliding block and the annular inclined plate.

[0019] By setting up the second rotating connecting rod, the sliding groove, the slider and other components, it can be ensured that the sliding plate drives the annular inclined plate and other components to move up and down, while the elastic cover and the hemispherical protrusion can move further upward, forming a secondary stretching of the breathable cloth, further improving the air permeability of the breathable cloth.

[0020] Optionally, an annular scraper is provided on the inclined end surface of the annular inclined plate, the annular scraper is in sliding contact with the inner wall of the pressure swing adsorption tank body, and a second sealing gasket is provided inside the annular scraper between the annular scraper and the pressure swing adsorption tank body.

[0021] By setting the annular scraper, the molecular sieve dust adhered to the inner wall of the pressure swing adsorption tank can be scraped off while the annular inclined plate slides up and down, so as to facilitate the subsequent discharge of the molecular sieve dust from the inside of the pressure swing adsorption tank.

[0022] Optionally, the upper end surface of each of the annular plates is provided with a plurality of second through holes, and the lower end surface of each of the annular plates is provided with a detachable annular storage groove.

[0023] By providing the second through hole and the annular storage groove, the storage capacity of the molecular sieve dust between the annular inclined sieve plate and the annular plate can be further improved, and the cleaning cycle of the molecular sieve dust can be extended.

[0024] In summary, compared with the prior art, the beneficial effects of this solution are: (1) Through the settings of components such as a conical sleeve, a spiral drive plate, and an annular inclined sieve plate, the present invention can stir the molecular sieve inside the pressure swing adsorption tank up and down during the pressure reduction and desorption of the molecular sieve, thereby improving the desorption efficiency of the molecular sieve. Moreover, through the stirring of the molecular sieve, the dust generated by the fragmentation inside the molecular sieve can be effectively separated, improving the nitrogen production purity of the molecular sieve; (2) Through the settings of components such as a first sieve plate, a second sieve plate, and a third sieve plate, the present invention enables different-sized molecular sieves to fully absorb impurities such as oxygen atoms in the air during the process of air flowing from top to bottom, thereby effectively improving the purity of nitrogen production; (3) Through the settings of components such as a breathable cloth, an annular inclined plate, and a discharge hole, the present invention can collect and store the molecular sieve dust that falls onto the upper surface of the breathable cloth during the pressure reduction and desorption of the molecular sieve inside the pressure swing adsorption tank, thereby effectively preventing the dust from clogging the pipelines of the nitrogen generator and improving the nitrogen production efficiency; (4) Through the settings of components such as an arc-shaped claw rod, a hemispherical protrusion, and a first rotating connecting rod, the present invention can support the breathable cloth more evenly during the nitrogen production process, making the breathable cloth more breathable. At the same time, during the pressure reduction and desorption process, the molecular sieve dust that falls onto the upper surface of the breathable cloth can be flicked outward at a high frequency, so that the dust on the upper surface of the breathable cloth can quickly fall through the discharge hole between the annular inclined plate and the annular scraper, effectively improving the dust collection efficiency, and further improving the nitrogen production purity and nitrogen production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional view of the present invention; Figure 2 is a three-dimensional view of the pressure swing adsorption tank body components of the present invention; Figure 3 is Figure 2 the front view of; Figure 4 is Figure 3 the three-dimensional sectional view at A-A in; Figure 5 is Figure 4 the partial enlarged view at B in; Figure 6 is Figure 4 the partial enlarged view at C in; Figure 7 is Figure 4 the partial enlarged view at D in; Figure 8 is Figure 4 the partial enlarged view at E in; Figure 9 is Figure 4 the partial enlarged view at F in; Figure 10 is Figure 4 the partial enlarged view at position G in Figure 11 is Figure 4 the partial enlarged view at position H in Figure 12 is Figure 4 the partial enlarged view at position J in

[0026] In the figure: air compressor 10, air compression tank 11, air filtration system 12, pressure swing adsorption tank body 13, first sieve plate 14, second sieve plate 15, third sieve plate 16, conical sleeve 17, rotating rod 18, spiral drive plate 19, annular inclined sieve plate 20, first through hole 21, annular plate 22, second through hole 23, annular storage tank 24, central through hole 25, drive rod 26, clamping chute 27, clamping slide bar 28, groove 29, protrusion 30, sleeve 31, breathable cloth 32, annular inclined plate 33, discharge hole 34, sliding plate 35, multi-faceted rod 36, sliding support plate 37, elastic cover 38, high-frequency vibrator 39, first raised particle 40, arc claw rod 41, hemispherical protrusion 42, second raised particle 43, reinforcement ring sleeve 44, long groove 45, sliding long bar 46, first rotating connecting rod 47, telescopic vibrator 48, protection support frame 49, first push cylinder 50, second rotating connecting rod 51, sliding groove 52, slider 53, limiting rod 54, spring 55, first limiting ring 56, first gasket 57, annular scraper 58, second gasket 59, elastic telescopic rod 60, second limiting ring 61, third limiting ring 62, third through hole 63, feeding bin 64, lower pressing plate 65, second push cylinder 66, partition plate 67, nitrogen storage tank 68, feed port 69, shock pad 70. Specific embodiments

[0027] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0028] Embodiment 1: As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, an intelligent adaptive pressure swing adsorption nitrogen generator includes an air compressor 10. One side of the air compressor 10 is connected and provided with an air compression tank 11. One side of the air compression tank 11 is connected and provided with a plurality of pressure swing adsorption tanks 13. An air filtration system 12 is arranged between the connecting pipelines between the air compression tank 11 and the pressure swing adsorption tanks 13. One side of the plurality of pressure swing adsorption tanks 13 is connected and provided with a nitrogen storage tank 68. The air compressor 10 compresses the air, which is stored in the air compression tank 11 through pipeline circulation, forming the compression of the air. Further, when the air flows from the air compression tank 11 to the inside of the pressure swing adsorption tank 13, an air filtration system 12 is arranged between the connecting pipelines of the air compression tank 11 and the pressure swing adsorption tank 13 to remove the impurities contained in the air. At the same time, through the alternating adsorption of nitrogen and pressure reduction desorption between the two pressure swing adsorption tanks, the overall pressure swing adsorption nitrogen production work is formed. At the same time, the air inlet of the pressure swing adsorption tank 13 is arranged on the lower side wall of the tank body, and the nitrogen discharge port is arranged on the top side wall of the tank body. The nitrogen discharged from the pressure swing adsorption tank 13 is stored in the nitrogen storage tank 68 through a pipeline. The above structural components and the operation modes between the components are all prior arts, and this solution will not be elaborated too much.

[0029] A plurality of mutually sliding sieve plates are arranged inside each pressure swing adsorption tank 13. The plurality of sieve plates include a first sieve plate 14 slidably arranged inside each pressure swing adsorption tank 13. A second sieve plate 15 is slidably arranged below each first sieve plate 14. A third sieve plate 16 is slidably arranged below each second sieve plate 15. Through the first sieve plate 14, the second sieve plate 15 and the third sieve plate 16, the mutual extrusion and sliding between the sieve plates can form the compression of the molecular sieve between the sieve plates, so that the density between the molecular sieve particles is reduced, and further the nitrogen production purity of the equipment is improved.

[0030] The through-hole sizes above the first sieve plate 14, the second sieve plate 15, and the third sieve plate 16 decrease successively from top to bottom, and the sizes of the molecular sieve particles placed on the upper end faces of the first sieve plate 14, the second sieve plate 15, and the third sieve plate 16 also decrease successively from top to bottom. By having different sizes of molecular sieve particles placed on the upper end faces of the first sieve plate 14, the second sieve plate 15, and the third sieve plate 16, different densities can be formed among the molecular sieve particles during the compression process. As a result, air can pass through molecular sieves of different densities for filtration and adsorption, thereby improving the purity of nitrogen production. Moreover, through the sieve holes that decrease successively from top to bottom on the sieve plates, the molecular sieve particles that break during the nitrogen production process will fall through the sieve holes on the sieve plates to the lower sieve plates, forming molecular sieve particles of different sizes on the same layer, which facilitates the adsorption operation of air after subsequent compaction. Since the molecular sieve particles will lose their adsorption capacity for oxygen atoms inside the air when their size is smaller than a certain extent, they need to be discharged in a timely manner. If the molecular sieves on the upper end face of the lowermost third sieve plate 16 break again, they will be smaller than the working particle size of the molecular sieves, so they will fall below the third sieve plate 16 and be collected and stored for subsequent discharge. Therefore, only by replenishing the molecular sieves on the upper end face of the first sieve plate 14 in a timely manner can the sufficient quantity of molecular sieves inside the pressure swing adsorption tank body 13 be ensured for a long time.

[0031] Above each first sieve plate 14, a detachable second limiting ring 61 is provided on the inner circular surface of the pressure swing adsorption tank body 13. Below each second sieve plate 15, a detachable third limiting ring 62 is provided on the inner circular surface of the pressure swing adsorption tank body 13. A sleeve 31 is provided outside each third sieve plate 16, and a breathable cloth 32 is provided on the inner circular surface of each sleeve 31. The breathable cloth 32 is made of breathable elastic cloth, which is an existing technology. Since the impact force of the air entering the pressure swing adsorption tank body 13 is relatively strong, through the setting of the breathable cloth 32, on the one hand, the impact force of the air can be blocked and slowed down by the flexible cloth to prevent the molecular sieves above from being broken by the high-pressure gas. On the other hand, the breathable fabric can also evenly disperse the originally high-pressure concentrated gas, making the air flowing between the molecular sieves more uniform, enabling the molecular sieves to fully adsorb the air and improving the purity of nitrogen production.

[0032] In this solution, after the breathable fabric is stretched and expanded by an external force, the breathable fabric 32 becomes thinner and the pores between the filaments also expand, thereby effectively improving the breathability of the breathable fabric 32. It should be noted here that there are only fine pores on the surface of the breathable fabric 32 that can allow air to pass through. Therefore, even if the molecular sieve debris that falls from the third sieve plate 16, the breathable fabric 32 can catch and collect it. Above each annular inclined plate 33, a first limiting ring 56 is provided on the inner circular surface of the pressure swing adsorption tank body 13. Each first limiting ring 56 is in sliding contact with the adjacent sleeve 31. The settings of the first limiting ring 56, the second limiting ring 61, and the third limiting ring 62 form a sliding restriction on the first sieve plate 14, the second sieve plate 15, and the third sieve plate 16, preventing excessive extrusion of the molecular sieve between the sieve plates under the push of the external structure, thereby effectively reducing the extrusion and crushing of the molecular sieve;

[0033] On the inner top surface of each pressure swing adsorption tank body 13, a feeding bin 64 is provided. A lower pressing plate 65 is slidably arranged inside each feeding bin 64. Above each lower pressing plate 65, a second push cylinder 66 is provided on the upper end surface of the pressure swing adsorption tank body 13. The output end of each second push cylinder 66 passes through the pressure swing adsorption tank body 13 and is fixedly connected to the upper end surface of the lower pressing plate 65. An elastic telescopic rod 60 is arranged between two adjacent first sieve plates 14 and second sieve plates 15. The second push cylinder 66 is a common electric push cylinder or a hydraulic push cylinder, which is a prior art.

[0034] It should be noted here that below the lower pressing plate 65, including inside the pressure swing adsorption tank body 13 and the feeding bin 64, molecular sieve particles with different densities are filled.

[0035] When the density between molecular sieve particles is insufficient and compaction is required, the output end of the second push cylinder 66 drives the lower pressing plate 65 to vertically press down, causing the molecular sieve particles inside the feeding bin 64 to move downward, increasing the amount of molecular sieves inside the pressure swing adsorption tank 13, thereby forming compaction of the molecular sieves above the first sieve plate 14, and then driving the first sieve plate 14 to move downward to form compaction of the molecular sieves between the first sieve plate 14 and the second sieve plate 15. Then, the linkage assembly below the third sieve plate 16 drives the third sieve plate 16 to move vertically upward, thereby forming compaction of the molecular sieves between the second sieve plate 15 and the third sieve plate 16. Subsequently, high-pressure air can be introduced into the pressure swing adsorption tank body 13 for nitrogen adsorption. Moreover, when decompressing and desorbing the inside of the pressure swing adsorption tank body 13, by releasing the downward pressure on the first sieve plate 14 and the support for the third sieve plate 16, under the gravitational force of the molecular sieves and the elastic support of the elastic telescopic rod 60, the distances between the first sieve plate 14, the second sieve plate 15, and the third sieve plate 16 increase, thereby reducing the extrusion force on the molecular sieves placed on the upper end faces of the first sieve plate 14, the second sieve plate 15, and the third sieve plate 16, reducing the density of the molecular sieves in the same layer, thereby reducing the contact area between the molecular sieves, making it easier for the molecular sieves to release adsorbed oxygen atoms and other impurities, and thus improving the desorption efficiency of the molecular sieves.

[0036] Furthermore, as Figure 4 and Figure 10 shown, an annular inclined plate 33 is provided on the outer circumferential surface of each sleeve 31, and a plurality of discharge holes 34 are provided on the inner circumferential surface of the sleeve 31 outside each breathable cloth 32. The arrangement of the plurality of discharge holes 34 enables the molecular sieve dust held by the breathable cloth 32 to flow through the discharge holes 34 to the cavity between the annular inclined plate 33 and the pressure swing adsorption tank body 13 for storage. A first sealing gasket 57 is provided on the lower end face of each first limiting ring 56. The setting of the first sealing gasket 57 can increase the sealing performance of the cavity between the first limiting ring 56 and the pressure swing adsorption tank body 13, prevent the molecular sieve dust stored below the first limiting ring 56 from leaking, and at the same time can scrape off the molecular sieve dust adhering to the outer circumferential surface of the sleeve 31 during the up and down sliding of the sleeve 31; Annular scraping blades 58 are provided on the end faces of the annular inclined plates 33. The annular scraping blades 58 are all in sliding contact with the inner circular surfaces of the adjacent pressure swing adsorption tanks 13. Second sealing gaskets 59 are provided on the outer circular surfaces of the annular scraping blades 58 between every two adjacent annular scraping blades 58 and the pressure swing adsorption tanks 13. The provision of the second sealing gaskets 59 can increase the sealing performance between the annular scraping blades 58 and the annular inclined plates 33 and prevent the leakage of molecular sieve dust. Through the provision of the annular scraping blades 58, while facilitating the storage of the molecular sieve dust stored between the annular inclined plates 33 and the pressure swing adsorption tanks 13, it can also scrape off the molecular sieve dust adhering to the inner circular surface of the pressure swing adsorption tank 13 during the vertical movement of the annular inclined plates 33, thus facilitating subsequent discharging through the dust discharge ports on the side walls of the pressure swing adsorption tanks 13.

[0037] Further, as Figure 4 , Figure 5 and Figure 12 shown, a plurality of tapered sleeves 17 are provided on the upper end faces of each of the first sieve plates 14, the second sieve plates 15, and the third sieve plates 16. A rotating rod 18 is rotatably provided inside each tapered sleeve 17. Each rotating rod 18 is rotatably connected to the upper end face of the adjacent first sieve plate 14, second sieve plate 15, or third sieve plate 16. A spiral transmission plate 19 is provided on the outer circular surface of each rotating rod 18 inside the tapered sleeve 17. A plurality of feed ports 69 are provided on the outer lower side wall of each tapered sleeve 17. The shape of the tapered sleeve 17 is as Figure 4 shown. Through the tapered setting of the tapered sleeve 17, more molecular sieves can enter the inside of the tapered sleeve 17 through the feed ports 69, be transmitted by the spiral transmission plate 19, and be output from the upper port of the tapered sleeve 17. Thus, during the process of pressure reduction and desorption of the molecular sieves inside the pressure swing adsorption tank 13, an up-and-down circulating agitation of the molecular sieves can be formed to improve the desorption efficiency. Moreover, during the desorption process of the molecular sieves, the absorption of energy will cause a local temperature decrease. By agitating the molecular sieves, the uniformity of the external temperature of the molecular sieves can be ensured, thereby improving the desorption efficiency of the molecular sieves. Furthermore, through the up-and-down circulating agitation of the molecular sieves, the fragmented molecular sieves can be gradually moved down to the upper side of the lower-layer sieve plate in a timely manner, and the powdered molecular sieves can fall onto the upper end face of the breathable cloth 32 in a timely manner and be collected and stored by other components, effectively preventing the blockage of the pipeline by dust during subsequent pressure swing adsorption nitrogen production and also improving the purity of nitrogen production.

[0038] An annular inclined sieve plate 20 is provided on the outer side wall of the upper end of each conical sleeve 17, and an annular plate 22 is connected between each annular inclined sieve plate 20 and the conical sleeve 17. Through the provision of the annular inclined sieve plate 20, when the molecular sieve is discharged from the upper port of the conical sleeve 17, it can be subjected to a sieving operation by rolling on the upper end surface of the annular inclined sieve plate 20, so that the molecular sieve dust contained in the molecular sieve can be collected inside the annular inclined sieve plate 20 and the annular plate 22 and stored. A plurality of first through holes 21 are provided on the outer circumferential surface of the conical sleeve 17 below each annular plate 22. The provision of the first through holes 21 can increase the air flow inside and outside the conical sleeve 17, so that the gas can also fully flow inside and outside the conical sleeve 17. Each conical sleeve A plurality of grooves 29 are arranged on the inner circular surface of the upper end of 17, and a plurality of protrusions 30 are arranged on the outer circular surface of the spiral transmission plate 19. The plurality of protrusions 30 form an extrusion vibration on the grooves 29 in the process of following the rotation of the spiral transmission plate 19, thereby driving the annular inclined sieve plate 20 to vibrate, thereby further improving the sieving effect of the annular inclined sieve plate 20 on the molecular sieve. A shock-absorbing pad 70 is arranged between each conical sleeve 17 and the sieve plate on the lower end surface of the conical sleeve 17. The shock-absorbing pad 70 is made of elastic material. The setting of the shock-absorbing pad 70 can effectively absorb the vibration generated by the conical sleeve 17, avoid the vibration noise between the conical sleeve 17 and the sieve plate, and also effectively improve the vibration effect of the conical sleeve 17 and the annular inclined sieve plate 20 and other components driven by the grooves 29 and the protrusions 30.

[0039] A central through hole 25 penetrating up and down is provided on the upper end surface of each rotating rod 18. A transmission rod 26 is rotatably arranged inside each central through hole 25. A plurality of clamping chutes 27 are provided on the inner side wall of each central through hole 25. A clamping slide bar 28 is slidably arranged inside each clamping chute 27. Each clamping slide bar 28 is fixedly connected to the outer cylindrical surface of the adjacent transmission rod 26. The arrangement of the clamping chute 27 and the clamping slide bar 28 can drive the rotating rod 18 through the transmission rod 26 without affecting the vertical sliding of the rotating rod 18. A partition 67 is provided between the outer cylindrical surface of each feeding bin 64 and the inner cylindrical surface of the pressure swing adsorption tank body 13. A sealed space is formed between the upper part of each partition 67 and the pressure swing adsorption tank body 13, and a transmission gear set is arranged inside. The top of each transmission rod 26 passes through the partition 67 and is fixedly connected to the lower end surface of the driven gear of the transmission gear set. Above each gear set, a transmission motor is arranged outside the pressure swing adsorption tank body 13. Each transmission motor passes through the pressure swing adsorption tank body 13 and is fixedly connected to the upper end surface of the driving gear in the transmission gear set. The transmission motor drives the gear set to rotate, thereby driving the transmission rod 26 to rotate, and further driving components such as the rotating rod 18 and the spiral transmission plate 19 to rotate, cooperating with components such as the conical sleeve 17 to form an up-and-down cyclic agitation of the molecular sieve inside the pressure swing adsorption tank body 13. And because there are more small particle molecular sieves between the third sieve plate 16 and the second sieve plate 15, the vertical moving distance of the third sieve plate 16 is shorter, so that the lower end of the transmission rod 26 will not contact the upper end surface of the air-permeable cloth 32.

[0040] Embodiment Two: On the basis of Embodiment One, a further embodiment is made, such as Figure 4 、 Figure 6 and Figure 7As shown in the figure, a sliding plate 35 is slidably arranged below each breathable cloth 32 inside the pressure swing adsorption tank body 13. A plurality of third through holes 63 are arranged on the upper end surface of each sliding plate 35. The arrangement of the plurality of third through holes 63 enables the high-pressure air entering the inside of the pressure swing adsorption tank body 13 to flow upward smoothly. A multi-faceted rod 36 is vertically slidably arranged on the upper end surface of each sliding plate 35. A reinforcing ring sleeve 44 is fixedly arranged on the outer part of each multi-faceted rod 36 on the upper end surface of the sliding plate 35. A telescopic vibrator 48 is arranged on the lower end surface of each sliding plate 35. The output end of each telescopic vibrator 48 passes through the sliding plate 35 and is fixedly connected to its adjacent multi-faceted rod 36. A sliding support plate 37 is arranged on the upper end surface of each multi-faceted rod 36. An elastic cover 38 is hermetically arranged outside each sliding support plate 37. The telescopic vibrator 48 is a common telescopic vibrator, which is a prior art. The output end of the telescopic vibrator 48 drives components such as the multi-faceted rod 36, the sliding support plate 37, and the elastic cover 38 to vertically expand and contract and vibrate, thereby forming a telescopic impact on the breathable cloth 32, so that the molecular sieve falling on the upper end surface of the breathable cloth 32 can fall between the annular inclined plate 33 and the annular scraper 58 more quickly for storage; A plurality of first convex particles 40 are arranged on the outer circumferential surface of each elastic cover 38. Each first convex particle 40 is slidably abutted against the inner wall of the breathable cloth 32. The arrangement of the plurality of first convex particles 40 can effectively increase the local support points between the outer circumferential surface of the elastic cover 38 and the breathable cloth 32, so that a certain gap is generated between the elastic cover 38 and the breathable cloth 32, enabling the air entering the inside of the pressure swing adsorption tank body 13 to pass through the breathable cloth 32 more quickly, effectively increasing the air permeability of the breathable cloth 32 to air. At the same time, under the support of components such as the elastic cover 38, a stretching and expanding effect can be formed on the breathable cloth 32, thereby increasing the size of the breathable pores on the surface of the breathable cloth 32 and improving the air permeability of the breathable cloth 32. A plurality of high-frequency vibrators 39 are arranged on the upper end surface of the sliding support plate 37 between every two adjacent sliding support plates 37 and elastic covers 38. The high-frequency vibrator 39 is a common high-frequency vibration sensor, which is a prior art. During the process of pressure reduction and desorption of the molecular sieve, through the vibration of the plurality of high-frequency vibrators 39, the elastic cover 38 can be driven to vibrate, thereby driving the breathable cloth 32 to vibrate secondly, facilitating the molecular sieve dust falling on the upper end surface of the breathable cloth 32 to quickly move through the discharge hole 34 to between the annular inclined plate 33 and the annular scraper 58.

[0041] Embodiment Three: On the basis of Embodiment One or Two, a further embodiment is made, such as Figure 4 、 Figure 8 and Figure 9As shown, an arc-shaped claw rod 41 is rotatably provided on the outer wall of each polygonal rod 36, a hemispherical protrusion 42 is provided on the top of each arc-shaped claw rod 41, a plurality of second protrusion particles 43 are provided on the outer circumferential surface of each hemispherical protrusion 42, and the plurality of second protrusion particles 43 slide against the inner wall of the breathable cloth 32, and a long groove 45 is provided on one side of each arc-shaped claw rod 41 on the side wall of the polygonal rod 36, and a sliding strip 46 is slidably provided inside each long groove 45, and the lower end surface of each sliding strip 46 is It is fixedly connected to the upper end surface of the adjacent reinforcement ring sleeve 44, and a first rotating connecting rod 47 is rotatably connected between every two adjacent arc-shaped claw rods 41 and the sliding strip 46. The arc-shaped arrangement of multiple arc-shaped claw rods 41, in conjunction with the hemispherical protrusion 42 set on the top of each arc-shaped claw rod 41, can form an annular support for the central part of the breathable cloth 32, so that the breathable cloth 32 is supported and expanded more evenly, thereby improving the uniform dispersion characteristics of 32 to the air and improving the adsorption effect between the air and the molecular sieve; Under the telescopic vibration of the telescopic vibrator 48, the polygonal rod 36 will vibrate vertically up and down, thereby driving each arc-shaped claw rod 41 to rotate along the rotating connection between the arc-shaped claw rod 41 and the polygonal rod 36, and then through the fixed setting of multiple sliding strips 46 and the rotating connection setting of multiple first rotating connecting rods 47, it is possible to form a pulling on one side of the arc-shaped claw rod 41 during the rotation of the arc-shaped claw rod 41, so that the arc-shaped claw rod 41 drives the hemispherical protrusion 42 at one end thereof to form an up and down shifting action, so that the hemispherical protrusion 42 drives the multiple second protrusion particles 43 arranged on its outer circular surface to perform high-frequency outward shifting of the inner bottom surface of the breathable cloth 32. On the one hand, it can improve the molecular sieve dust on the upper end surface of the breathable cloth 32 to be able to be shaken off faster, and on the other hand, it can also better open each position of the breathable cloth 32 to ensure its breathability.

[0042] Embodiment four: On the basis of the first to third embodiments, further embodiments are made, such as Figure 4 , Figure 10 and Figure 11 As shown, the upper end surface of each sliding plate 35 is annularly and evenly provided with a plurality of sliding grooves 52, a slider 53 is slidably provided inside each sliding groove 52, a limiting rod 54 is provided inside each sliding groove 52, each limiting rod 54 is slidably connected with its adjacent slider 53, a spring 55 is provided outside each limiting rod 54 between the sliding groove 52 and the slider 53, a second rotating connecting rod 51 is rotatably provided between each slider 53 and its adjacent annular inclined plate 33, and a protective support frame 49 is provided outside each telescopic vibrator 48 on the lower end surface of the sliding plate 35; A first push cylinder 50 is provided at the lower end face of each pressure swing adsorption tank body 13. The output end of each first push cylinder 50 passes through the pressure swing adsorption tank body 13 and is fixedly connected to the lower end face of the protection support frame 49. When the output end of the first push cylinder 50 drives components such as the protection support frame 49 and the sliding plate 35 to move vertically, it can drive components such as the annular inclined plate 33 and the third sieve plate 16 to move vertically through a plurality of second rotating connecting rods 51, forming the compaction of the molecular sieve between the second sieve plate 15 and the third sieve plate 16. At the same time, through the elastic tension of the spring 55, under the push of the first push cylinder 50 and the reaction force of the annular inclined plate, the second rotating connecting rod 51 will form an inclined support for the slider 53, so that the slider 53 slides horizontally inside the sliding groove 52 to form an extrusion of the spring 55, enabling components such as the sliding plate 35 and the multi-faceted rod 36 to continue to move upward for a certain distance, thereby forming a secondary stretching and expansion of the breathable cloth 32, making the breathability of the breathable cloth 32 stronger. Moreover, during the process of pressure reduction and desorption inside the pressure swing adsorption tank body 13, the telescopic vibrator 48 will drive components such as the sliding plate 35 to vibrate vertically, and then drive components such as the sliding plate 35 to generate vibrations. Under the action of the elastic tension of the spring 55 itself, it can effectively absorb the vibrations generated by the telescopic vibrator 48 on components such as the second rotating connecting rod 51 and the annular inclined plate 33 through the sliding plate 35, playing a buffering role.

[0043] Pressure swing adsorption nitrogen production process: Start the second push cylinder 66 and the first push cylinder 50. The output end of the second push cylinder 66 drives the lower pressing plate 65 to compress the molecular sieve above the first sieve plate 14, and then drives the first sieve plate 14 to compress the molecular sieve between the first sieve plate 14 and the second sieve plate 15. The output end of the first push cylinder 50 drives components such as the sliding plate 35 and the third sieve plate 16 to move vertically, forming the compression of the molecular sieve between the second sieve plate 15 and the third sieve plate 16, and then forming the compression of the molecular sieve inside the pressure swing adsorption tank body 13. Open the intake pipe communicated with the pressure swing adsorption tank body 13, so that high-pressure air enters from the lower end of the pressure swing adsorption tank body 13. Through the dispersion treatment of the breathable cloth 32, the air impact force flowing into the molecular sieve is reduced, which can effectively reduce the crushing of the molecular sieve. Through the filtration and adsorption of the molecular sieve, high-purity nitrogen is generated, and the nitrogen is discharged into the internal of the nitrogen storage tank 68 through the exhaust pipe.

[0044] Molecular sieve pressure reduction desorption process: Start the first push cylinder 50 and the second push cylinder 66 again, so that the output end of the first push cylinder 50 drives components such as the sliding plate 35 and the third sieve plate 16 to move vertically downward. At the same time, the output end of the second push cylinder 66 drives the lower pressing plate 65 to move vertically upward, so that the first sieve plate 14 moves to the lower end surface of the second limiting ring 61 under the elastic action of the elastic telescopic rod 60. At this time, there are certain gaps between the first sieve plate 14, the second sieve plate 15 and the third sieve plate 16. Start multiple drive motors to drive the transmission rod 26 to rotate. The transmission rod 26 drives components such as the rotating rod 18 and the spiral transmission plate 19 to rotate, forming an up-and-down circular screening of the molecular sieve inside the pressure swing adsorption tank body 13, separating molecular sieves and molecular sieve dust with different particle sizes, and at the same time improving the desorption efficiency of the molecular sieve. During the above process, start the telescopic vibrator 48 and multiple high-frequency vibrators 39 to vibrate, so that the molecular sieve dust falling on the upper end surface of the breathable cloth 32 quickly moves to be stored between the annular inclined plate 33 and the annular scraper 58.

[0045] Embodiment Five: On the basis of Embodiments One to Five, a further embodiment is made, such as Figure 5 As shown, a plurality of second through holes 23 are provided on the upper end surface of each annular plate 22, and a detachable annular storage tank 24 is provided on the lower end surface of the plurality of second through holes 23 below the annular plate 22. Through the arrangement of the second through holes 23 and the annular storage tank 24, the storage capacity of the molecular sieve dust between the annular inclined sieve plate 20 and the annular plate 22 can be further increased, and the cleaning cycle of the molecular sieve dust can be extended.

[0046] In the present invention, sealing structures are provided at the sliding joints of the transmission shaft, the push cylinder output shaft and the outer wall and other components, so as to ensure the sealing performance of the pressure swing adsorption nitrogen generator.

[0047] For example, certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different nouns to refer to the same component. The specification and claims of the present application do not use the difference in name as a way to distinguish components, but use the difference in function of components as the criterion for distinction. As mentioned throughout the specification and claims, "comprising" is an open-ended term, so it should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0048] It should be noted that the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or system comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such commodity or system. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the commodity or system comprising said element.

[0049] The above description shows and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the application concept described herein through the above teachings or the techniques or knowledge in the relevant field. Any changes and variations made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. An intelligent adaptive pressure swing adsorption nitrogen generator, comprising an air compressor (10), an air compression tank (11), an air filtration system (12) and a nitrogen storage tank (68). Two alternating nitrogen production pressure swing adsorption tanks (13) are communicatively arranged between the air filtration system (12) and the nitrogen storage tank (68), and it is characterized in that, The internal gas of each pressure swing adsorption tank body (13) flows from bottom to top. Each pressure swing adsorption tank body (13) is provided with a plurality of sieve plates that can slide close to each other. Molecular sieve particles are filled between the plurality of sieve plates in the pressure swing adsorption tank body (13). The upper end surface of each sieve plate is provided with a plurality of conical sleeves (17). A spiral transmission plate (19) is rotatably arranged inside each conical sleeve (17). The plurality of spiral transmission plates (19) in the same vertical column rotate synchronously. An annular inclined sieve plate (20) is arranged on the outer circumferential surface of the upper end of each conical sleeve (17). An annular plate (22) is arranged between the conical sleeve (17) and the annular inclined sieve plate (20). A plurality of grooves (29) are arranged on the inner circumferential surface of the top of each conical sleeve (17). A plurality of protrusions (30) that are in extrusion friction with the grooves (29) are arranged on the top blades of each spiral transmission plate (19). A plurality of feed ports (69) are arranged on the outer circumferential surface of the lower end of each conical sleeve (17).

2. The intelligent adaptive pressure swing adsorption nitrogen generator according to claim 1, wherein, The plurality of sieve plates include a second sieve plate (15) slidably arranged inside the pressure swing adsorption tank body (13). A first sieve plate (14) is slidably arranged inside the pressure swing adsorption tank body (13) above the second sieve plate (15). A third sieve plate (16) is slidably arranged inside the pressure swing adsorption tank body (13) below the second sieve plate (15). A sleeve (31) is fixedly arranged on the lower end surface of the third sieve plate (16). A breathable cloth (32) is arranged inside the sleeve (31) below the third sieve plate (16). A plurality of discharge holes (34) are arranged on the inner side wall of the sleeve (31) outside the breathable cloth (32). A vibration dust collection assembly is arranged below the breathable cloth (32).

3. The intelligent adaptive pressure swing adsorption nitrogen generator according to claim 2, characterized in that, The diameters of the sieve holes on the first sieve plate (14), the second sieve plate (15), and the third sieve plate (16) decrease sequentially from top to bottom. The sizes of the molecular sieve particles placed on the upper end surfaces of the first sieve plate (14), the second sieve plate (15), and the third sieve plate (16) decrease sequentially from top to bottom.

4. An intelligent adaptive pressure swing adsorption nitrogen generator according to claim 2, characterized in that, The vibration dust collection assembly includes an annular inclined plate (33) arranged on the lower end surface of the sleeve (31). The annular inclined plate (33) is in sliding contact with the pressure swing adsorption tank body (13). A first limit ring (56) is arranged on the inner side wall of the pressure swing adsorption tank body (13) above the annular inclined plate (33). A first gasket (57) is arranged between the lower end surface of the first limit ring (56) and the pressure swing adsorption tank body (13) and the sleeve (31).

5. An intelligent adaptive pressure swing adsorption nitrogen generator according to claim 4, characterized in that, The vibration dust collection assembly further includes a sliding plate (35) slidably disposed below the annular inclined plate (33). A multi-faceted rod (36) capable of vertical vibration is disposed on the upper end surface of the sliding plate (35). A reinforcing ring sleeve (44) is disposed on the upper end surface of the sliding plate (35) outside each multi-faceted rod (36). A sliding support plate (37) is disposed at the top of the multi-faceted rod (36). An elastic cover (38) is hermetically disposed outside the sliding support plate (37). A plurality of high-frequency vibrators (39) are disposed on the upper end surface of the sliding support plate (37) between the sliding support plate (37) and the elastic cover (38). A plurality of first raised particles (40) are disposed on the outer circumferential surface of the elastic cover (38). Each first raised particle (40) is in sliding contact with the inner wall of the air-permeable cloth (32).

6. The intelligent adaptive pressure swing adsorption nitrogen generator according to claim 5, wherein, The vibration dust collection assembly further includes an arc-shaped claw rod (41) rotatably disposed on the outer side wall of each multi-faceted rod (36). A hemispherical projection (42) is disposed at the top of each arc-shaped claw rod (41). A plurality of second raised particles (43) are disposed on the outer circumferential surface of each hemispherical projection (42). The plurality of second raised particles (43) are in sliding contact with the inner wall of the air-permeable cloth (32).

7. An intelligent adaptive pressure swing adsorption nitrogen generator according to claim 6, characterized in that, The vibration dust collection assembly further includes a long groove (45) disposed on the side wall of the multi-faceted rod (36). A sliding strip (46) is slidably disposed inside each long groove (45). The lower end surface of each sliding strip (46) is fixedly connected to the upper end surface of its adjacent reinforcing ring sleeve (44). A first rotating connecting rod (47) is rotatably connected between each two adjacent arc-shaped claw rods (41) and sliding strips (46).

8. An intelligent adaptive pressure swing adsorption nitrogen generator according to claim 5, characterized in that, A plurality of sliding grooves (52) are uniformly disposed in a ring shape on the upper end surface of the sliding plate (35). A slider (53) is slidably disposed inside each sliding groove (52). A second rotating connecting rod (51) is rotatably connected between each slider (53) and the annular inclined plate (33).

9. An intelligent adaptive pressure swing adsorption nitrogen generator according to claim 8, characterized in that, An annular scraping knife (58) is disposed on the inclined end surface of the annular inclined plate (33). The annular scraping knife (58) is in sliding contact with the inner side wall of the pressure swing adsorption tank body (13). A second gasket (59) is disposed inside the annular scraping knife (58) between the annular scraping knife (58) and the pressure swing adsorption tank body (13).

10. An intelligent adaptive pressure swing adsorption nitrogen generator according to claim 1, characterized in that, A plurality of second through holes (23) are disposed on the upper end surface of each annular plate (22). A detachable annular storage groove (24) is disposed on the lower end surface of each annular plate (22).

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