Molecular sieve pressing structure of nitrogen making machine

Abstract

The molecular sieve pressing structure of the nitrogen making machine comprises a tower body, a gas inlet end and a gas outlet end are arranged on the side wall of the bottom and the side wall of the top end of the tower body respectively, a feeding port and a discharging port are formed in the side wall of the top end and the side wall of the bottom end of the tower body respectively, and a bottom plate is fixedly connected to the inner wall of the bottom end of the tower body; a plurality of air holes are formed in the surface of the bottom plate, a plurality of mounting seats are fixedly connected to the inner wall of the tower body, a plurality of threaded holes are formed in each mounting seat, a bolt matched with each threaded hole is in threaded connection with the interior of each threaded hole, a top cover is mounted at the top of the tower body, and the top cover is fixedly connected with the top of the tower body. The top and the bottom of the top cover are fixedly connected with a mounting frame and a sealing block respectively, an air outlet end is arranged on the top cover, and a pressing mechanism is mounted on the mounting frame. The molecular sieves can be filled into the whole adsorption tower in a layered mode, all layers of molecular sieves can be fully pressed, and mechanical stress generated when a pressing mechanism is pressed can be effectively relieved.

Description

Technical Field

[0001] The invention belongs to the technical field of molecular sieves for nitrogen generators, and in particular relates to a molecular sieve compression structure for nitrogen generators. Background Art

[0002] A nitrogen generator is a device that separates oxygen and nitrogen from the air. It uses physical methods to separate oxygen and nitrogen to produce high-purity nitrogen. Nitrogen generators are widely used in industries such as industry, chemical industry, medicine, electronics, food, and aerospace. The core components of nitrogen generators include air compressors, coolers, dryers, adsorption towers, molecular sieves, control systems, etc.

[0003] Molecular sieve is a material used to separate nitrogen from the air, usually used in pressure swing adsorption nitrogen generators. Molecular sieve is a solid material with a microporous structure. Its pore size is precise and can screen gases of different molecular sizes. The main function of the molecular sieve of the nitrogen generator is to separate nitrogen by adsorbing impurities such as oxygen, carbon dioxide, and water vapor in the air through the principle of physical adsorption. At present, the nitrogen generators on the market usually install molecular sieves in adsorption towers, and there are some defects and deficiencies in the prior art that need to be improved: (1) When the molecular sieves are filled into the adsorption tower by the existing nitrogen generator equipment, the molecular sieves tend to be concentrated and accumulated in a certain area, and it is difficult to evenly distribute them at various height positions of the adsorption tower, so that the molecular sieves in some areas are loose or too tight, thereby affecting the adsorption efficiency of the molecular sieves; (2) After the molecular sieves are filled into the adsorption tower by the existing nitrogen generator equipment, the molecular sieves cannot be fully compressed. At this time, irregular gaps and airflow channels will be formed in the tower. After entering the adsorption tower, the airflow will preferentially pass through these channels instead of evenly passing through the adsorption layer formed by the entire molecular sieve, which makes the gas and the molecular sieve insufficiently contacted, thereby greatly reducing the adsorption effect of the molecular sieve; (3) When the existing nitrogen generator equipment uses a compression disc or a compression plate to mechanically compress the molecular sieve, it is easy to cause the molecular sieve particles to break due to excessive compression force, thereby affecting the adsorption performance of the molecular sieve. Therefore, in view of the above problems, the molecular sieve compression structure of a nitrogen generator provided by the present invention is of great significance. Summary of the invention

[0004] The present invention provides a molecular sieve compression structure for a nitrogen generator, wherein the internal space of a tower body 1 can be layered by a plurality of layering plates 17, and the molecular sieves can be layered and filled into the interior of the entire tower body by the cooperation of the plurality of layering plates and the filling channels, and a plurality of adsorption layers are formed, so that the molecular sieves can be evenly distributed at various height positions in the tower body, thereby effectively avoiding the molecular sieves being concentratedly accumulated in a certain area and the molecular sieves in some areas being loosened or too tight, thereby affecting the adsorption efficiency of the molecular sieves; the molecular sieves of each layer can be fully compressed by the compression mechanism, so that the airflow can evenly pass through the adsorption layers formed by the molecular sieves of each layer, thereby avoiding the formation of irregular gaps and airflow channels in the tower body, thereby greatly reducing the adsorption effect of the molecular sieves; the buffer blocks at the bottom of the compression plate can play a buffering role, so as to reduce the mechanical stress of the compression plate, thereby effectively avoiding the molecular sieves being broken due to excessive compression force, thereby affecting its adsorption performance, and in summary, solving the problems in the background technology.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The molecular sieve compression structure of a nitrogen generator of the present invention comprises a tower body, wherein the bottom and top side walls of the tower body are respectively provided with an air inlet and an air outlet, and the top and bottom side walls of the tower body are respectively provided with a feed inlet and a discharge outlet, and sealing plugs are installed on the feed inlet and the discharge outlet, and the bottom inner wall of the tower body is fixedly connected with a bottom plate, the bottom plate is located below the discharge outlet, and a plurality of air holes are opened on the surface of the bottom plate, and the inner wall of the tower body is fixedly connected with a plurality of mounting seats, the mounting seats are located above the bottom plate, and each mounting seat is provided with a plurality of air holes ... A plurality of threaded holes are provided on each of the mounting seats, each of the threaded holes penetrates the side wall of the tower body, and a bolt matching with the threaded hole is threadedly connected in each of the threaded holes, a top cover is installed on the top of the tower body, a mounting frame and a sealing block are fixedly connected to the top and bottom of the top cover respectively, and an air outlet is provided on the top cover, the bottom of the air outlet penetrates the sealing block and is connected to the inner cavity of the tower body, and valves are installed on the air outlet, air inlet and exhaust ends, and a clamping mechanism is installed on the mounting frame;

[0007] The clamping mechanism comprises a cylinder and a plurality of layered plates, the cylinder is installed on a mounting frame, the bottom end of the output shaft of the cylinder passes through the top cover and the sealing block and is fixedly connected with a threaded tube, the threaded tube is internally threadedly connected with a pressure rod, the top rod body of the pressure rod is engraved with an external thread matching with the threaded tube, the layered plate is circular, a through hole is opened at the center thereof, and the side wall of each layered plate is opened with a plurality of threaded grooves matching with bolts, a storage cavity is opened at the bottom of each layered plate, and a clamping plate is arranged under each layered plate, and a movable hole is opened at the center of each clamping plate, the pressure rod passes through the through holes on each layered plate and the movable holes on each clamping plate respectively, and the rod body of the pressure rod is fixedly connected with a plurality of groups of pressure blocks, and the top of each clamping plate is fixedly connected with a plurality of springs, and the top of the spring is fixedly connected to the top of the storage cavity.

[0008] Furthermore, the layered plates are circular and are linearly distributed at equal distances along the axial direction of the pressure rod, and the side walls of the layered plates are fitted to the side walls of each mounting seat.

[0009] Furthermore, the mounting seats are distributed in an equidistant annular pattern along the circumferential direction of the tower body, and a filling channel is formed between every two adjacent mounting seats.

[0010] Furthermore, the number of the thread grooves and the threaded holes are the same, the diameters are equal, and the center of each thread groove corresponds to the center of each threaded hole one by one.

[0011] Furthermore, each group of the pressing blocks is distributed in an equidistant annular pattern along the circumferential direction of the pressing rod, the number of groups of the pressing blocks is the same as the number of layered plates, and each group of the pressing blocks is attached to the top of the corresponding pressing plate.

[0012] Furthermore, the receiving cavity is circular, and its diameter is equal to the diameter of the pressing plate.

[0013] Furthermore, a plurality of buffer blocks are arranged on the bottom surface of each of the pressing plates.

[0014] Furthermore, a plurality of studs protrude outward from the top port of the tower body and are fixedly connected thereto. The studs are distributed in an equidistant ring shape along the circumferential direction of the tower body, and each of the studs is threadedly connected to a nut matching it. The top cover is circular, and a plurality of positioning holes are provided on its surface. The number of the positioning holes is the same as that of the studs, and the diameters are equal, and the center of each of the positioning holes corresponds one-to-one to the center of each stud.

[0015] Furthermore, the cross section of the sealing block is circular, the diameter of which is equal to the inner diameter of the tower body, and a layer of sealing ring is provided on the side wall surface of the sealing block.

[0016] A method for using a molecular sieve compression structure of a nitrogen generator is implemented by using the molecular sieve compression structure of the nitrogen generator described above, and comprises the following steps:

[0017] S1. Fill the molecular sieve into the tower body through the feed port. After entering the tower body, the molecular sieve will fall on the bottom plate. As the molecular sieve is continuously filled, the filling height of the molecular sieve gradually rises and gradually accumulates on each layering plate through each filling channel. At this time, the molecular sieve can be layered and filled into the interior of the entire tower body through the cooperation of multiple layering plates and filling channels, and multiple adsorption layers are formed;

[0018] S2. Drive the cylinder to drive the threaded barrel and the pressure rod to move downward. When the pressure rod moves downward, the compression plates under each layer plate can be driven to move downward through each group of compression blocks. When the compression plates come into contact with the molecular sieve, the downward pressure applied by the compression plates can fully compress the molecular sieves of each layer.

[0019] S3. After the molecular sieves are layered and compacted, the valve on the air inlet is opened to introduce the gas to be treated into the tower body, and the gas is allowed to flow through the adsorption layers formed by each layer of the molecular sieves, so as to selectively adsorb oxygen and impurities through the molecular sieves;

[0020] S4. After adsorption by each layer of molecular sieve, the separated or purified nitrogen can be discharged by opening the valve on the gas outlet end. When the molecular sieve is close to saturation after a long period of adsorption, the pressure inside the tower body can be reduced by opening the valve on the exhaust end, so that the impurity gas adsorbed on the molecular sieve can be released along the exhaust end through the desorption process, thereby regenerating the molecular sieve. When the desorption is completed, the valve on the exhaust end is closed, and the tower body can be used for the next round of molecular sieve adsorption operation;

[0021] S5. After the tower has been working for a long time, the molecular sieve can be discharged by pulling out the sealing plug on the discharge port so as to refill the molecular sieve;

[0022] S6. When regular maintenance is required, unscrew the bolts from the threaded grooves and threaded holes, and then unscrew the nuts on the studs. The top cover together with the clamping mechanism can be removed from the tower body, and then the pressure rod can be unscrewed from the threaded barrel to perform regular maintenance on the interior of the tower body and various components of the clamping mechanism.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) When the molecular sieve compression structure of a nitrogen generator in the present invention is used, the internal space of the tower body 1 can be layered by multiple layering plates 17, and the molecular sieve can be layered and filled into the interior of the entire tower body by the cooperation of multiple layering plates and filling channels to form multiple adsorption layers, so that the molecular sieve can be evenly distributed at various height positions in the tower body, thereby effectively avoiding the molecular sieve being concentrated in a certain area and the molecular sieve in some areas being loose or too tight, thereby affecting the adsorption efficiency of the molecular sieve;

[0025] (2) When the molecular sieve compression structure of a nitrogen generator in the present invention is used, each layer of the molecular sieve can be fully compressed by the compression mechanism, so that the airflow can evenly pass through the adsorption layer formed by each layer of the molecular sieve, so as to avoid the formation of irregular gaps and airflow channels in the tower body, which greatly reduces the adsorption effect of the molecular sieve;

[0026] (3) When the molecular sieve compression structure of the nitrogen generator in the present invention is in use, the buffer blocks at the bottom of the compression plate can play a buffering role to reduce the mechanical stress of the compression plate, thereby effectively avoiding the molecular sieve from being broken due to excessive compression force and affecting its adsorption performance.

[0027] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of a molecular sieve compression structure of a nitrogen generator of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the tower body in the present invention;

[0031] Figure 3 A top view of the tower body in the present invention;

[0032] Figure 4 It is a front cross-sectional view of the tower body and the bottom plate in the present invention;

[0033] Figure 5 It is a structural schematic diagram of the bottom plate of the present invention;

[0034] Figure 6 It is a schematic diagram of the structure of the top cover in the present invention;

[0035] Figure 7A bottom view of the top cover of the present invention;

[0036] Figure 8 It is a structural schematic diagram of the pressing mechanism in the present invention;

[0037] Fig. 9 It is a front view of the clamping mechanism in the present invention;

[0038] Fig.10 It is a structural schematic diagram of the pressure rod in the present invention;

[0039] Fig.11 A bottom view of the layered plate of the present invention;

[0040] Fig.12 It is a structural schematic diagram of the pressing plate in the present invention;

[0041] Fig.13 It is a bottom view of the pressing plate in the present invention.

[0042] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0043] 1. Tower body; 2. Air inlet; 3. Exhaust end; 4. Feed inlet; 5. Discharge outlet; 6. Sealing plug; 7. Bottom plate; 8. Air hole; 9. Mounting seat; 10. Threaded hole; 11. Bolt; 12. Top cover; 13. Mounting frame; 14. Sealing block; 15. Air outlet; 16. Cylinder; 17. Layered plate; 18. Threaded barrel; 19. Pressure rod; 20. Through hole; 21. Threaded groove; 22. Storage cavity; 23. Pressing plate; 24. Movable hole; 25. Sealing ring; 26. Pressure block; 27. Spring; 28. Filling channel; 29. ​​Buffer block; 30. Stud; 31. Nut; 32. Positioning hole. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be understood that the terms "relative", "one end", "inside", "lateral", "end", "two ends", "both sides", "front", "one end face", "the other end face" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0046] See also Figure 1-13As shown, a molecular sieve compression structure of a nitrogen generator of the present invention comprises a tower body 1, the bottom and top side walls of the tower body 1 are respectively provided with an air inlet 2 and an air outlet 3, and the top and bottom side walls of the tower body 1 are respectively provided with a feed port 4 and a discharge port 5, and sealing plugs 6 are installed on the feed port 4 and the discharge port 5, the molecular sieve can be filled into the tower body 1 through the feed port 4, and the molecular sieve can be discharged through the discharge port 5, and the bottom inner wall of the tower body 1 is fixedly connected with a bottom plate 7, and the bottom plate 7 is located below ... The surface is provided with a plurality of air holes 8, the inner wall of the tower body 1 is fixedly connected with a plurality of mounting seats 9, the mounting seats 9 are located above the bottom plate 7, and each mounting seat 9 is provided with a plurality of threaded holes 10, each threaded hole 10 penetrates the side wall of the tower body 1, and each threaded hole 10 is threadedly connected with a bolt 11 matched therewith, a top cover 12 is installed on the top of the tower body 1, the top and bottom of the top cover 12 are respectively fixedly connected with a mounting frame 13 and a sealing block 14, and an air outlet port is provided on the top cover 12 15, the bottom of the gas outlet 15 passes through the sealing block 14 and is connected to the inner cavity of the tower body 1, and valves are installed on the gas outlet 15, the gas inlet 2 and the exhaust end 3. The valves are electromagnetic valves and are externally connected to a PLC control system. The gas to be treated can be introduced into the tower body 1 by opening the valve on the gas inlet 2, and made to flow through the molecular sieve so that oxygen and impurities can be selectively adsorbed by the molecular sieve. Then, the separated or purified nitrogen can be discharged by opening the valve on the gas outlet 15. When the molecular sieve is close to saturation, the pressure inside the tower body 1 can be reduced by opening the valve on the exhaust end 3, so that the impurity gas adsorbed on the molecular sieve can be released along the exhaust end 3 through the desorption process, thereby regenerating the molecular sieve. When the desorption is completed, the valve on the exhaust end 3 is closed, and the tower body 1 can be used for the next round of molecular sieve adsorption operation. After working for a long time, the molecular sieve can be led out by pulling out the sealing plug 6 on the discharge port 5, so that the molecular sieve can be refilled. A pressing mechanism is installed on the mounting frame 13;

[0047] The clamping mechanism includes a cylinder 16 and a plurality of layered plates 17. The cylinder 16 is mounted on the mounting frame 13. The bottom end of the output shaft thereof passes through the top cover 12 and the sealing block 14 and is fixedly connected with a threaded tube 18. The threaded tube 18 is internally threadedly connected with a pressure rod 19. The top end of the pressure rod 19 is engraved with an external thread that matches the threaded tube 18. The layered plate 17 is circular, and a through hole 20 is provided at the center thereof. The side wall of each layered plate 17 is provided with a plurality of threaded grooves 21 that match the bolts 11. A storage cavity 22 is provided at the bottom of each layered plate 17, and a clamping plate 23 is provided below each layered plate 17. A movable hole 24 is provided at the center of each clamping plate 23. The pressure rod 19 passes through the through holes 20 on each layered plate 17 and the holes on each clamping plate 23. The movable hole 24 is provided, and the rod body of the pressure rod 19 is fixedly connected with several groups of pressure blocks 26. The top of each pressure plate 23 is fixedly connected with several springs 27. The top of the spring 27 is fixedly connected to the top of the storage chamber 22. When the molecular sieve is filled into the tower body 1, the threaded cylinder 18 and the pressure rod 19 can be driven downward by driving the cylinder 16. When the pressure rod 19 moves downward, the pressure plates 23 under each layering plate 17 can be driven downward by each group of pressure blocks 26. When the pressure plate 23 contacts the molecular sieve, the downward pressure applied by the pressure plate 23 can fully compress the molecular sieve, so that the airflow can evenly pass through the adsorption layer formed by the molecular sieve, so as to avoid the formation of irregular gaps and airflow channels in the tower body 1, which greatly reduces the adsorption effect of the molecular sieve.

[0048] The layered plates 17 are circular and are equidistantly linearly distributed along the axial direction of the compression rod 19 , and the side walls of the layered plates 17 are attached to the side walls of each mounting seat 9 . The internal space of the tower body 1 can be layered by multiple layered plates 17 .

[0049] Among them, the mounting seats 9 are distributed in an equidistant ring shape along the circumferential direction of the tower body 1, and a filling channel 28 is formed between every two adjacent mounting seats 9. After the molecular sieve enters the tower body 1 through the feed port 4, it will fall onto the bottom plate 7. As the molecular sieve is continuously filled, the filling height of the molecular sieve gradually increases, and is gradually accumulated on each stratification plate 17 through each filling channel 28. At this time, the molecular sieve can be layered and filled into the interior of the entire tower body 1 through the mutual cooperation of multiple stratification plates 17 and filling channels 28, and multiple adsorption layers can be formed, so that the molecular sieve can be evenly distributed at various height positions in the tower body 1, thereby effectively avoiding the molecular sieve being concentrated in a certain area and the molecular sieve in some areas being loose or too tight, thereby affecting the adsorption efficiency of the molecular sieve.

[0050] Among them, the number of thread grooves 21 and the threaded holes 10 are the same, the diameters are equal, and the center of each thread groove 21 corresponds to the center of each threaded hole 10 one by one. By tightening the bolts 11 in each threaded hole 10, the end of the bolt 11 can be screwed into the corresponding thread groove 21. At this time, each layered plate 17 can be fixed on the mounting seat 9 through the mutual cooperation between the bolt 11 and the thread groove 21.

[0051] Among them, each group of pressing blocks 26 is distributed in an equidistant ring shape along the circumferential direction of the pressing rod 19, the number of groups of pressing blocks 26 is the same as the number of layered plates 17, and each group of pressing blocks 26 is attached to the top of the corresponding pressing plate 23. When the pressing rod 19 moves downward, each group of pressing blocks 26 can press down multiple pressing plates 23 at the same time, so that the molecular sieves of each layer can be pressed at the same time by multiple pressing plates 23, thereby ensuring that the pressing force of each layer of molecular sieve is uniform.

[0052] Among them, the storage chamber 22 is circular, and its diameter is equal to the diameter of the clamping plate 23. When the driving cylinder 16 drives the pressure rod 19 to move upward, the clamping plate 23 can fit in the storage chamber 22. At this time, each group of pressure blocks 26 can drive each layer plate 17 to move upward together, so that each clamping plate 23 and layer plate 17 can be taken out of the tower body 1 together.

[0053] Among them, a plurality of buffer blocks 29 are arranged on the bottom surface of each pressing plate 23. The buffer blocks 29 are hemispherical rubber block structures and are fixed by glue or the like. When the bottom of the pressing plate 23 contacts the molecular sieve and presses the molecular sieve, each buffer block 29 can play a buffering role so as to reduce the mechanical stress of the pressing plate 23, thereby effectively avoiding the molecular sieve from being broken due to excessive pressing force and affecting its adsorption performance.

[0054] Among them, a plurality of studs 30 protrude outward and are fixedly connected at the top port of the tower body 1. The studs 30 are equidistantly distributed in an annular shape along the circumferential direction of the tower body 1, and each stud 30 is threadedly connected with a nut 31 matching it. The top cover 12 is circular, and a plurality of positioning holes 32 are opened on its surface. The number of positioning holes 32 is the same as that of the studs 30, and the diameter is equal. The center of each positioning hole 32 corresponds to the center of each stud 30. When the top cover 12 is covered on the top of the tower body 1, each stud 30 can be aligned with and pass through the corresponding positioning hole 32 respectively. At this time, the nut 31 is threadedly connected to each stud 30 and tightened. The top cover 12 can be fixed to the top of the tower body 1 through the mutual cooperation among the studs 30, the positioning holes 32, and the nuts 31. The top cover 12 can be removed from the tower body 1 together with the clamping mechanism by unscrewing the nut 31, so as to perform regular maintenance on the interior of the tower body 1 and the clamping mechanism.

[0055] Among them, the cross-section of the sealing block 14 is circular, and its diameter is equal to the inner diameter of the tower body 1, and a sealing ring 25 is provided on the side wall surface of the sealing block 14. The sealing ring 25 is made of elastic materials such as rubber and is fixed by glue or other means. When the top cover 12 is fixed on the top of the tower body 1, the sealing block 14 can be attached to the top inner wall of the tower body 1. At this time, the sealing ring 25 can be used to fill the gap between the sealing block 14 and the inner wall of the tower body 1 to play a sealing role, thereby effectively avoiding the waste caused by the escape of nitrogen through the gap.

[0056] A method for using a molecular sieve compression structure of a nitrogen generator is implemented by using the molecular sieve compression structure of the nitrogen generator described above, and comprises the following steps:

[0057] S1. The molecular sieve is filled into the tower body 1 through the feed port 4. After entering the tower body 1, the molecular sieve will fall onto the bottom plate 7. As the molecular sieve is continuously filled, the filling height of the molecular sieve gradually rises, and gradually accumulates onto each layering plate 17 through each filling channel 28. At this time, the molecular sieve can be layered and filled into the interior of the entire tower body 1 through the cooperation of multiple layering plates 17 and filling channels 28, and multiple adsorption layers are formed;

[0058] S2, driving the cylinder 16 to drive the threaded barrel 18 and the pressure rod 19 to move downward. When the pressure rod 19 moves downward, the pressing plates 23 under each layering plate 17 can be driven to move downward together through each group of pressing blocks 26. When the pressing plates 23 come into contact with the molecular sieve, the downward pressure applied by the pressing plates 23 can fully compress the molecular sieves of each layer;

[0059] S3. After the molecular sieves are layered and compacted, the valve on the gas inlet end 2 is opened to introduce the gas to be treated into the tower body 1, and the gas is allowed to flow through the adsorption layers formed by each layer of the molecular sieves, so as to selectively adsorb oxygen and impurities through the molecular sieves;

[0060] S4. After the molecular sieves are adsorbed in each layer, the separated or purified nitrogen can be discharged by opening the valve on the gas outlet end 15. When the molecular sieve is close to saturation after a long period of adsorption, the pressure inside the tower body 1 can be reduced by opening the valve on the exhaust end 3, so that the impurity gas adsorbed on the molecular sieve can be released along the exhaust end 3 through the desorption process, thereby regenerating the molecular sieve. When the desorption is completed, the valve on the exhaust end 3 is closed, and the tower body 1 can be used for the next round of molecular sieve adsorption operation;

[0061] S5. After the tower body 1 has been working for a long time, the molecular sieve can be discharged by pulling out the sealing plug 6 on the discharge port 5 so as to refill the molecular sieve;

[0062] S6. When regular maintenance is required, unscrew the bolts 11 from the threaded grooves 21 and the threaded holes 10, and then unscrew the nuts 31 on the studs 30. The top cover 12 together with the clamping mechanism can be removed from the tower body 1. Then, the pressure rod 19 can be unscrewed from the threaded tube 18, and the interior of the tower body 1 and the various components of the clamping mechanism can be regularly maintained.

[0063] The circuits, electronic components and chip modules involved in the present invention are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0064] The standard parts used in the application documents can all be purchased from the market. All the components in this application document can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art. The electrical components appearing in this article are all electrically connected to the external main controller and 220V AC power, and the main controller can be a conventional known device that controls the LED lamp body, etc.

[0065] The working principle of the present invention is:

[0066] When the present invention is used, firstly, the electrical components in the compression structure are connected to the control switch and the power supply through the wires, and then the molecular sieve is filled into the tower body 1 through the feed port 4. After entering the tower body 1, the molecular sieve will fall onto the bottom plate 7. As the molecular sieve is continuously filled, the filling height of the molecular sieve gradually rises, and is gradually accumulated on each layering plate 17 through each filling channel 28. At this time, the molecular sieve can be layered and filled into the interior of the entire tower body 1 through the cooperation of multiple layering plates 17 and filling channels 28, and multiple adsorption layers are formed. Then, the cylinder 16 is driven to drive the threaded cylinder 18 together with the pressure rod 19 to move downward. When the pressure rod 19 moves downward, the compression plates 23 under each layering plate 17 can be driven to move downward together through each group of compression blocks 26. When the compression plate 23 contacts the molecular sieve, the downward pressure applied by the compression plate 23 can fully compress the molecular sieves of each layer. After the molecular sieve is layered and compressed, the valve on the air inlet end 2 is opened to introduce the gas to be treated into the tower body 1, and make it flow through the adsorption layers formed by each layer of molecular sieve. , so that oxygen and impurities can be selectively adsorbed by the molecular sieve. After adsorption by each layer of molecular sieve, the separated or purified nitrogen can be discharged by opening the valve on the gas outlet end 15. When the molecular sieve is close to saturation after a long period of adsorption, the pressure inside the tower body 1 can be reduced by opening the valve on the exhaust end 3, so that the impurity gas adsorbed on the molecular sieve can be released along the exhaust end 3 through the desorption process, thereby regenerating the molecular sieve. After the desorption is completed, the valve on the exhaust end 3 is closed, and the tower body 1 can be used for the next round of molecular sieve adsorption operation. After the tower body 1 has been working for a long time, the molecular sieve can be led out by pulling out the sealing plug 6 on the discharge port 5, so as to refill the molecular sieve. When regular maintenance is required, the bolts 11 are unscrewed from each threaded groove 21 and threaded hole 10, and then the nuts 31 on each stud 30 are unscrewed, and the top cover 12 can be removed from the tower body 1 together with the clamping mechanism, and then the pressure rod 19 is unscrewed from the threaded barrel 18, and the interior of the tower body 1 and the various components of the clamping mechanism can be regularly maintained.

[0067] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A molecular sieve compression structure for a nitrogen generator, characterized in that: The vents are provided with a plurality of air holes, and the ... The clamping mechanism comprises a cylinder and a plurality of layered plates, the cylinder is installed on a mounting frame, the bottom end of the output shaft of the cylinder passes through the top cover and the sealing block and is fixedly connected with a threaded tube, the threaded tube is internally threadedly connected with a pressure rod, the top rod body of the pressure rod is engraved with an external thread matching with the threaded tube, the layered plate is circular, a through hole is opened at the center thereof, and the side wall of each layered plate is opened with a plurality of threaded grooves matching with bolts, a storage cavity is opened at the bottom of each layered plate, and a clamping plate is arranged under each layered plate, and a movable hole is opened at the center of each clamping plate, the pressure rod passes through the through holes on each layered plate and the movable holes on each clamping plate respectively, and the rod body of the pressure rod is fixedly connected with a plurality of groups of pressure blocks, and the top of each clamping plate is fixedly connected with a plurality of springs, and the top of the spring is fixedly connected to the top of the storage cavity.

2. The molecular sieve compression structure of a nitrogen generator according to claim 1, characterized in that: The layered plates are circular and are linearly distributed at equal distances along the axial direction of the pressure rod, and the side walls of the layered plates are fitted to the side walls of each mounting seat.

3. The molecular sieve compression structure of a nitrogen generator according to claim 1, characterized in that: The mounting seats are distributed in an equidistant annular pattern along the circumferential direction of the tower body, and a filling channel is formed between every two adjacent mounting seats.

4. The molecular sieve compression structure of a nitrogen generator according to claim 1, characterized in that: The number of the thread grooves and the thread holes are the same, the diameters are equal, and the center of each thread groove corresponds to the center of each thread hole one by one.

5. The molecular sieve compression structure of a nitrogen generator according to claim 1, characterized in that: Each group of the pressing blocks is distributed in an equidistant annular pattern along the circumferential direction of the pressing rod. The number of the groups of the pressing blocks is the same as the number of the layered plates, and each group of the pressing blocks is fitted on the top of the corresponding pressing plate.

6. The molecular sieve compression structure of a nitrogen generator according to claim 1, characterized in that: The receiving cavity is circular, and its diameter is equal to the diameter of the pressing plate.

7. The molecular sieve compression structure of a nitrogen generator according to claim 1, characterized in that: A plurality of buffer blocks are arranged on the bottom surface of each pressing plate.

8. The molecular sieve compression structure of a nitrogen generator according to claim 1, characterized in that: A plurality of studs protrude outward from the top port of the tower body and are fixedly connected thereto. The studs are distributed in an equidistant ring shape along the circumferential direction of the tower body, and each stud is threadedly connected to a nut matching it. The top cover is circular, and a plurality of positioning holes are opened on its surface. The number of the positioning holes is the same as that of the studs, and the diameters are equal, and the center of each positioning hole corresponds one-to-one to the center of each stud.

9. The molecular sieve compression structure of a nitrogen generator according to claim 1, characterized in that: The cross section of the sealing block is circular, the diameter of which is equal to the inner diameter of the tower body, and a layer of sealing ring is arranged on the side wall surface of the sealing block.

10. The method for using the molecular sieve compression structure of a nitrogen generator according to claim 1, characterized in that: The method is implemented by using a molecular sieve compression structure of a nitrogen generator as claimed in any one of claims 1 to 7, comprising the following steps: S1. Fill the molecular sieve into the tower body through the feed port. After entering the tower body, the molecular sieve will fall on the bottom plate. As the molecular sieve is continuously filled, the filling height of the molecular sieve gradually rises and gradually accumulates on each layering plate through each filling channel. At this time, the molecular sieve can be layered and filled into the interior of the entire tower body through the cooperation of multiple layering plates and filling channels, and multiple adsorption layers are formed; S2. Drive the cylinder to drive the threaded barrel and the pressure rod to move downward. When the pressure rod moves downward, the compression plates under each layer plate can be driven to move downward through each group of compression blocks. When the compression plates come into contact with the molecular sieve, the downward pressure applied by the compression plates can fully compress the molecular sieves of each layer. S3. After the molecular sieves are layered and compacted, the valve on the air inlet is opened to introduce the gas to be treated into the tower body, and the gas is allowed to flow through the adsorption layers formed by each layer of the molecular sieves, so as to selectively adsorb oxygen and impurities through the molecular sieves; S4. After adsorption by each layer of molecular sieve, the separated or purified nitrogen can be discharged by opening the valve on the gas outlet end. When the molecular sieve is close to saturation after a long period of adsorption, the pressure inside the tower body can be reduced by opening the valve on the exhaust end, so that the impurity gas adsorbed on the molecular sieve can be released along the exhaust end through the desorption process, thereby regenerating the molecular sieve. When the desorption is completed, the valve on the exhaust end is closed, and the tower body can be used for the next round of molecular sieve adsorption operation; S5. After the tower has been working for a long time, the molecular sieve can be discharged by pulling out the sealing plug on the discharge port so as to refill the molecular sieve; S6. When regular maintenance is required, unscrew the bolts from the threaded grooves and threaded holes, and then unscrew the nuts on the studs. The top cover together with the clamping mechanism can be removed from the tower body, and then the pressure rod can be unscrewed from the threaded barrel to perform regular maintenance on the interior of the tower body and various components of the clamping mechanism.

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