CN212757914U - Molecular sieve bed with medium cup seat - Google Patents

Abstract

The utility model belongs to the technical field of oxygen making equipment, a molecular sieve bed of installation medium cup is provided, including inlet end cover (10) and exhaust end cover (3), connect through coupling assembling between inlet end cover (10) and the exhaust end cover (3), be equipped with molecular sieve bed aluminum pipe (13) between inlet end cover (10) and exhaust end cover (3), molecular sieve bed aluminum pipe (13) intussuseption is filled with lithium type molecular sieve (7), the both ends of lithium type molecular sieve (7) are equipped with inlet end medium cup and exhaust end medium cup (14) respectively, inlet end medium cup is filled with sodium type molecular sieve (15), inlet end medium cup and exhaust end medium cup (14) communicate with inlet end cover (10) and exhaust end cover (3) respectively, in the utility model, be favorable to improving oxygen concentration, protect lithium type molecular sieve effectively, prolong its life, the utilization rate of the molecular sieve is improved; meanwhile, the lip-shaped seal can effectively prevent the molecular sieve particles and dust from leaking out.

Description

Molecular sieve bed with medium cup seat

Technical Field

The utility model belongs to the technical field of the oxygen generating equipment, a molecular sieve bed is related to, especially relate to the molecular sieve bed of installation medium cup.

Background

The molecular sieve bed in the prior art comprises a molecular sieve bed cylinder 8, a lithium type molecular sieve 7 is arranged in the molecular sieve bed cylinder 8, and two ends of the lithium type molecular sieve 7 are respectively and fixedly connected with an air inlet end cover 10 and an air outlet end cover 3 through locking screws 1. The inner walls of the air inlet end cover 10 and the air outlet end cover 3 are both provided with grooves, and sealing gaskets 4 for sealing the lithium type molecular sieve 7 are arranged in the grooves. The air inlet end screen 11 is arranged in the groove of the air inlet end cover 10, so that the compressed air can flow uniformly in the circumferential direction of the molecular sieve bed, and the utilization rate of the molecular sieve is improved. The central position of the air inlet end cover 10 is provided with an air inlet end baffle sheet 12, which prevents compressed air from directly rushing into the central position of the molecular sieve bed and plays a role in flow equalization. And the air inlet end of the lithium type molecular sieve 7 is provided with air inlet end efficient filter paper 9 for preventing the molecular sieve and dust thereof from leaking. The exhaust end of the lithium type molecular sieve 7 is provided with a movable piston pore plate 5, a compression spring 2 is arranged between the exhaust end cover 3 and the movable piston pore plate 5, the movable piston pore plate 5 is continuously compressed, and the molecular sieve filled in the molecular sieve bed is ensured to be in a compressed state. The movable piston orifice plate 5 is ultrasonically welded with exhaust end efficient filter paper 6, the edge of the movable piston orifice plate 5 is sealed, and the molecular sieve and dust thereof are prevented from leaking.

The prior art molecular sieve beds suffer from several disadvantages: (1) a single lithium type molecular sieve is used in the molecular sieve bed for the separation of nitrogen and oxygen. The inherent defect of the lithium type molecular sieve is that after the lithium type molecular sieve is combined with water vapor, complete desorption is difficult to realize, so that the nitrogen-oxygen separation capacity is gradually reduced, and the oxygen production concentration of the oxygen generator is finally influenced; (2) sealing gaskets are required to be arranged in the air inlet end cover and the air outlet end cover, and the sealing gaskets are fastened by locking screws to form effective molecular sieve bed sealing. The installation process of the gasket and the end cover is complicated. The cross section of the sealing gasket is only 1.5 mm wide, and if the end cover and the fastening screw are not uniformly pressed on the circumference of the gasket during installation, the sealing part of the gasket can be found to leak in the subsequent leakage detection process of the molecular sieve bed, so that the sealing gasket needs to be dismantled and reworked, and extra workload is increased; (3) the moving piston orifice plate is an ABS injection molded part that requires sufficient width of material to be left around the flow holes to ensure part strength. The effective gas flow area is reduced, the flow equalizing effect of the gas flow in the circumferential direction of the molecular sieve bed is influenced, and the utilization rate of the molecular sieve is reduced; (4) the movable piston orifice plate and the high-efficiency filter paper at the exhaust end are welded by ultrasonic waves, so that the requirement on the manufacturing process of suppliers is high. If the filter paper is not centered with the moving piston orifice plate, it may result in the high efficiency filter paper not having sufficient width of material on the walls of the molecular sieve cartridge to seal the molecular sieve and its dust. The leakage of dust can block the downstream high-efficiency filter and affect the circulation of product oxygen.

Accordingly, to address these problems, the present invention provides a molecular sieve bed with a media cup mounted thereon.

Disclosure of Invention

In view of the above disadvantages of the prior art, the present invention provides a molecular sieve bed with a media cup installed thereon, which is used to solve the problems of gradual attenuation of nitrogen-oxygen separation capability of a single molecular sieve during oxygen production, troublesome installation of a sealing gasket, low utilization rate of the molecular sieve, and high requirements for a manufacturing process of ultrasonic welding a movable piston hole and high-efficiency filter paper at an exhaust end in the prior art.

In order to achieve the above and other related purposes, the invention provides a molecular sieve bed with a medium cup, which comprises an air inlet end cover and an air outlet end cover, wherein the air inlet end cover and the air outlet end cover are connected through a connecting assembly, a molecular sieve bed aluminum pipe is arranged between the air inlet end cover and the air outlet end cover, a lithium molecular sieve is filled in the molecular sieve bed aluminum pipe, an air inlet end medium cup and an air outlet end medium cup are respectively arranged at two ends of the lithium molecular sieve, a sodium molecular sieve is filled in the air inlet end medium cup, and the air inlet end medium cup and the air outlet end medium cup are respectively communicated with the air inlet end cover and the air outlet end cover.

Preferably, the molecular sieve bed aluminum tube is a triangular aluminum tube.

Preferably, the air inlet end medium cup base comprises an air inlet end medium cup base upper cover and an air inlet end medium cup base, the air inlet end medium cup base upper cover and the air inlet end medium cup base are formed by ultrasonically welding a plastic part and a 120-mesh stainless steel screen, and the sodium type molecular sieve is filled between the air inlet end medium cup base upper cover and the air inlet end medium cup base.

Preferably, the end parts, close to the air inlet end cover, of the air inlet end medium cup base upper cover and the air inlet end medium cup base are respectively provided with a first lip-shaped flange and a second lip-shaped flange along the circumferential direction, the first lip-shaped flange is attached to and tightly pressed on the inner surface of the air inlet end medium cup base, and the second lip-shaped flange is attached to and tightly pressed on the inner surface of the molecular sieve bed aluminum pipe.

Preferably, the exhaust end medium cup base is formed by ultrasonically welding a plastic part and a 120-mesh stainless steel screen, a third lip-shaped flange is arranged at one end part, close to the exhaust end cover, of the exhaust end medium cup base along the circumferential direction of the exhaust end medium cup base, and the third lip-shaped flange is attached to and tightly presses the inner surface of the molecular sieve bed aluminum pipe.

Preferably, the upper cover of the air inlet end medium cup seat and the exhaust end medium cup seat are provided with flow blocking sheets, and the flow blocking sheets are ultrasonically welded on 120-mesh stainless steel screens of the upper cover of the air inlet end medium cup seat and the exhaust end medium cup seat.

Preferably, a plurality of injection molding first guide grooves and second guide grooves are respectively arranged in the upper cover of the air inlet end medium cup seat and the exhaust end medium cup seat.

Preferably, the opposite surfaces of the air inlet end cover and the air outlet end cover are provided with grooves along the circumferential direction, the end parts of the two ends of the molecular sieve bed aluminum pipe are respectively positioned in the grooves of the air inlet end cover and the air outlet end, and a sealing gasket is arranged in the groove of the air inlet end cover.

Preferably, filtering foam is arranged between the upper cover of the air inlet end medium cup base and the air inlet end, a compression spring is arranged outside the filtering foam, and two ends of the compression spring are respectively contacted with the air inlet end cover and the upper cover of the air inlet end medium cup base.

Preferably, coupling assembling includes the screw rod, and the both ends of screw rod are fixed through the nut after running through air inlet end cover and exhaust end cover respectively, all be equipped with the flat gasket between nut and air inlet end cover and the exhaust end cover.

As mentioned above, the utility model discloses a molecular sieve bed of installation medium cup has following beneficial effect:

1. the utility model discloses in, sodium type molecular sieve is high to vapor affinity, can adsorb the vapor in the compressed air that gets into the molecular sieve bed in a large number in adsorption cycle to discharge the oxygenerator system with vapor and waste gas together in desorption cycle. After the sodium molecular sieve adsorbs water vapor, the water vapor in the air entering the filling end of the lithium molecular sieve is greatly reduced, so that the oxygen production concentration is favorably improved, the lithium molecular sieve can be effectively protected, and the service life of the lithium molecular sieve is prolonged.

2. The utility model discloses in, many guiding gutters in baffling piece and the medium cup in the medium cup make product oxygen flow equalize, improve the utilization ratio of molecular sieve. The stainless steel sieve mesh prevents the molecular sieve and dust from leaking out to the downstream pipeline along with the airflow. After the stainless steel screen mesh is used for replacing a movable piston orifice plate, the effective gas flow cross section area is increased, and the gas flow resistance is reduced.

3. The utility model discloses in, lip turn-ups laminating and compress tightly molecular sieve bed aluminum pipe inner wall in the exhaust end medium cup, form hard seal, effectively prevent molecular sieve granule and dust to spill, soft sealing material such as sealed effect is better than O shape circle because O shape circle probably slides in the molecular sieve bed, causes sealed inefficacy. Meanwhile, compared with a soft sealing material, the lip type sealing structure is simpler and quicker to install.

4. The utility model discloses in, inlet end medium cup upper cover is equipped with the guiding gutter structure for the compressed air that gets into the molecular sieve bed flow equalizes, and the inner wall of lip turn-ups laminating and compressing tightly molecular sieve bed aluminum pipe internal surface and inlet end medium cup base seat, sealed sodium type molecular sieve prevents that lithium type molecular sieve from spilling.

5. The utility model discloses in, the sodium type molecular sieve is packed alone and is assembled at the production line to the inlet end medium cup, then when integral erection was intraductal to molecular sieve bed aluminium, the molecular sieve of two kinds of differences separates like this, avoids the compounding.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 shows a cross-sectional view a-a.

Fig. 4 shows a component diagram of the media base of the exhaust end.

Fig. 5 shows an exploded view of the media base of the venting end.

FIG. 6 shows an assembly view of the inlet end media cup holder.

Figure 7 shows an exploded view of the inlet end media cup.

FIG. 8 shows an assembly view of the inlet end media cup base.

Figure 9 shows an exploded view of the inlet end media cup base.

FIG. 10 shows an assembly view of the inlet end media cup holder.

Figure 11 shows an exploded view of the inlet end media cup.

Description of the element reference numerals

1-locking screw, 2-compression spring, 3-exhaust end cover, 4-sealing gasket, 5-moving piston orifice plate, 6-exhaust end high-efficiency filter paper, 7-lithium type molecular sieve, 8-molecular sieve bed cylinder, 9-inlet end high-efficiency filter paper, 10-inlet end cover, 11-inlet end screen, 12-inlet end baffle, 13-molecular sieve bed aluminum pipe, 14-exhaust end medium cup, 15-sodium type molecular sieve, 16-inlet end medium cup upper cover, 17-inlet end medium cup base, 18-120 mesh stainless steel screen, 19-first lip-shaped flanging, 20-second lip-shaped flanging, 21-third lip-shaped flanging, 22-baffle plate, 23-first diversion trench, 24-second diversion trench, 25-groove, 26-flat gasket, 27-filtering foam, 28-screw, 29-nut, 30-plastic part.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 11. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1 to 11, the invention provides a molecular sieve bed with a medium cup, which includes an air inlet end cover 10 and an air outlet end cover 3, wherein the air inlet end cover 10 and the air outlet end cover 3 are connected through a connecting assembly, a molecular sieve bed aluminum pipe 13 is arranged between the air inlet end cover 10 and the air outlet end cover 3, the molecular sieve bed aluminum pipe 13 is filled with a lithium type molecular sieve 7, two ends of the lithium type molecular sieve 7 are respectively provided with an air inlet end medium cup and an air outlet end medium cup 14, the air inlet end medium cup is filled with a sodium type molecular sieve 15, and the air inlet end medium cup and the air outlet end medium cup 14 are respectively communicated with the air inlet end cover 10 and the air outlet end cover 3.

When the molecular sieve bed is used in the embodiment, a single lithium type molecular sieve 7 is used in the molecular sieve bed in the prior art for separating nitrogen and oxygen, and the lithium type molecular sieve 7 is difficult to completely desorb after being combined with water vapor, so that the nitrogen-oxygen separation capacity of the molecular sieve is gradually reduced, and the oxygen production concentration of the oxygen generator is finally influenced. Therefore, in order to extend the service life of the molecular sieve, it is necessary to reduce the binding of the lithium-type molecular sieve 7 with water vapor. To achieve this, in this embodiment, the sodium type molecular sieve 15 is added before the lithium type molecular sieve 7, and the sodium type molecular sieve 15 has high affinity for water vapor, so that a large amount of water vapor in the compressed air entering the molecular sieve bed can be adsorbed in the adsorption cycle, and the water vapor is discharged out of the oxygen generator system together with the waste gas in the desorption cycle. After the water vapor is absorbed by the sodium type molecular sieve 15, the water vapor entering the filling end of the lithium type molecular sieve 7 is greatly reduced, so that the oxygen production concentration is favorably improved, the lithium type molecular sieve 7 can be effectively protected, and the service life of the lithium type molecular sieve is prolonged.

In this embodiment, the air inlet end cap 10 is provided with a compressed air inlet, and the compressed air inlet is communicated with the air inlet end medium cup seat. The exhaust end cover 3 is an output end of product oxygen and is communicated with the exhaust end medium cup seat 14, and the exhaust end cover 3 is connected with a downstream hose to realize the discharge of the product oxygen.

In this embodiment, the molecular sieve bed aluminum tube 13 is not limited to the sodium type molecular sieve 15, and other hydrophilic adsorbents capable of adsorbing water vapor in the compressed air may be used. Such as alumina adsorbent.

As a further description of the above embodiment, the molecular sieve bed aluminum tube 13 is a triangular aluminum tube.

In use in this embodiment, the molecular sieve bed aluminium tube 13 is used to fill the molecular sieve and is sealed with the inlet end cap 10 and the outlet end cap 3 at both ends. The shape of the molecular sieve bed is changed into a triangle, so that the miniaturization of the molecular sieve bed can be realized, and the strength of the molecular sieve bed can be improved.

As a further description of the above embodiment, the air inlet end medium cup holder includes an air inlet end medium cup holder upper cover 16 and an air inlet end medium cup holder base 17, both the air inlet end medium cup holder upper cover 16 and the air inlet end medium cup holder base 17 are formed by ultrasonically welding a plastic part 30 and a 120-mesh stainless steel screen 18, and the sodium type molecular sieve 15 is filled between the air inlet end medium cup holder upper cover 16 and the air inlet end medium cup holder base 17. The end parts, close to the air inlet end cover 10, of the air inlet end medium cup upper cover 16 and the air inlet end medium cup base 17 are respectively provided with a first lip-shaped flange 19 and a second lip-shaped flange 20 along the circumferential direction of the end parts, the first lip-shaped flange 19 is attached to and tightly pressed on the inner surface of the air inlet end medium cup base 17, and the second lip-shaped flange 20 is attached to and tightly pressed on the inner surface of the molecular sieve bed aluminum pipe 13.

When the lithium-type molecular sieve is used in the embodiment, the shape of the first lip-shaped flange 19 is the same as that of the inner wall of the air inlet end medium cup base seat 17, and the first lip-shaped flange 19 is attached to and tightly pressed on the inner surface of the molecular sieve bed aluminum pipe 13, so that the lithium-type molecular sieve 7 and dust thereof can be prevented from leaking out of the inner wall of the air inlet end medium cup base seat 17.

The shape of the second lip-shaped flange 20 is the same as the shape of the inner wall of the molecular sieve bed aluminum pipe 13, and the second lip-shaped flange 20 is attached to and tightly presses the inner surface of the molecular sieve bed aluminum pipe 13, so that the lithium type molecular sieve 7 and dust thereof can be prevented from leaking from the inner wall of the molecular sieve bed aluminum pipe 13.

The medium cup seat at the air inlet end is independently filled with the sodium type molecular sieve 15 in the production line and assembled into an assembly, and then when the medium cup seat is integrally installed in the triangular aluminum tube, the two different molecular sieves are separated, so that material mixing is avoided.

The lip-shaped flanging on the base 17 of the medium cup seat at the air inlet end is tightly attached to the inner wall of the triangular aluminum pipe, and the lithium type molecular sieve 7 at the lower end is sealed. The medium cup seat adopts a profiling lip type sealing mode, so that the production process is simplified.

In this example, the mesh size of 120 mesh sieve is 0.125mm, which is smaller than the particle size of molecular sieve 0.4mm, even if the molecular sieve is crushed, the dust can be prevented from overflowing. If the size of the openings is too large, the openings will not filter dust, and if the size of the openings is too small, the resistance to airflow will be increased, so that a 120-mesh screen is selected in this embodiment. The 120-mesh screen can seal molecular sieve particles with the particle size of 0.4-0.8 mm, the resistance to air flow is also obviously smaller than that of high-efficiency filter paper in the prior art, and the effective air flow circulation area of the screen is also obviously larger than that of the movable piston orifice plate 5.

In this embodiment, the stainless steel screen can prevent the molecular sieve and dust from leaking out to the downstream pipeline along with the air current. After the stainless steel screen mesh is used for replacing the movable piston orifice plate 5 in the prior art, the effective gas flow cross section area is increased, and the gas flow resistance is reduced.

In this embodiment, the 120 mesh stainless steel screen 18 can be replaced with high efficiency filter paper and ultrasonically welded to the injection molded part.

As a further description of the above embodiment, the exhaust end medium cup 14 is formed by ultrasonic welding the plastic part 30 and the 120-mesh stainless steel screen 18, and one end of the exhaust end medium cup 14 close to the exhaust end cover 3 is provided with a third lip-shaped flange 21 along the circumferential direction thereof, and the third lip-shaped flange 21 is attached to and pressed against the inner surface of the molecular sieve bed aluminum pipe 13.

When the lithium-type molecular sieve bed aluminum pipe 13 is used in the embodiment, the shape of the third lip-shaped flange 21 is the same as the shape of the inner wall of the molecular sieve bed aluminum pipe 13, and the third lip-shaped flange 21 is attached to and tightly presses the inner surface of the molecular sieve bed aluminum pipe 13, so that the lithium-type molecular sieve 7 and dust thereof can be prevented from leaking out of the inner wall of the molecular sieve bed aluminum pipe 13.

The lip-shaped seal effectively prevents the molecular sieve particles and dust from leaking, and the sealing effect is better than that of soft sealing materials such as O-shaped rings, and the O-shaped rings can slide in the molecular sieve bed to cause sealing failure. Meanwhile, compared with a soft sealing material, the lip type sealing structure is simpler and quicker to install.

As a further description of the above embodiment, the flow blocking sheets 22 are disposed on the inlet end medium cup holder upper cover 16 and the outlet end medium cup holder 14, and the flow blocking sheets 22 are ultrasonically welded on the 120-mesh stainless steel screen 18 of the inlet end medium cup holder upper cover 16 and the outlet end medium cup holder 14. A plurality of injection molding first diversion trenches 23 and second diversion trenches 24 are respectively arranged in the air inlet end medium cup seat upper cover 16 and the air outlet end medium cup seat 14.

When the embodiment is used, the arrangement of the flow blocking pieces 22 and the flow guide grooves can make the oxygen flow of the product uniform, and the utilization rate of the molecular sieve is improved.

As a further description of the above embodiment, the opposite surfaces of the inlet end cover 10 and the exhaust end cover 3 are provided with grooves 25 along the circumferential direction thereof, the ends of the two ends of the molecular sieve bed aluminum pipe 13 are respectively positioned in the grooves 25 of the inlet end cover 10 and the exhaust end, and the sealing gasket 4 is arranged in the groove 25 of the inlet end cover 10.

When the embodiment is used, the sealing gasket 4 is arranged in the groove 25 of the air inlet end cover 10, and after the molecular sieve bed is locked, the sealing gasket 4 is tightly pressed on the end surface of the molecular sieve bed aluminum pipe 13 for sealing the molecular sieve bed.

In this example, during the molecular sieve bed mounting process, the triangular molecular sieve bed aluminum tube 13 was inserted into the groove 25 of the exhaust end cap 3 precoated with a one-component epoxy adhesive, and then cured at a high temperature. The one-component epoxy adhesive has excellent fluidity at the initial stage of high-temperature curing and can be filled into the gap between the triangular aluminum tube and the groove 25 of the exhaust end cap 3. After a certain period of high temperature curing, the epoxy adhesive provides extremely high adhesive strength and good sealing properties.

As a further description of the above embodiment, a filter foam 27 is disposed between the intake end media cup upper cover 16 and the intake end, a compression spring 2 is disposed outside the filter foam 27, and both ends of the compression spring 2 are respectively in contact with the intake end cover 10 and the intake end media cup upper cover 16.

When the present embodiment is used, the filter foam 27 can filter the molecular sieve dust that may leak out, and prevent the dust from entering a downstream valve along with the exhaust gas during desorption. The compression spring 2 compresses the upper cover 16 of the medium cup seat at the air inlet end, so that the molecular sieve filled in the molecular sieve bed keeps a compressed state.

As a further description of the above embodiment, the connection assembly includes a screw 28, two ends of the screw 28 respectively penetrate through the intake end cover 10 and the exhaust end cover 3 and then are fixed by nuts 29, and flat gaskets 26 are respectively disposed between the nuts 29 and the intake end cover 10 and the exhaust end cover 3.

When the embodiment is used, the molecular sieve bed is locked and fastened through the screw 28, the nut 29 and the flat gasket 26, and the stability and firmness of the molecular sieve bed are ensured.

In conclusion, the invention is beneficial to improving the oxygen production concentration, effectively protects the lithium type molecular sieve, prolongs the service life of the lithium type molecular sieve and can also improve the utilization rate of the molecular sieve; meanwhile, the lip seal can effectively prevent the molecular sieve particles and dust from leaking out; in addition, the air inlet end medium cup seat is formed by independently filling and assembling sodium type molecular sieves in a production line, and then when the cup seat is integrally installed in an aluminum tube of a molecular sieve bed, two different molecular sieves are separated, so that material mixing is avoided. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. Molecular sieve bed of installation medium cup seat, including inlet end cover (10) and exhaust end cover (3), its characterized in that: the air inlet end cover (10) and the air exhaust end cover (3) are connected through a connecting assembly, a molecular sieve bed aluminum pipe (13) is arranged between the air inlet end cover (10) and the air exhaust end cover (3), a lithium type molecular sieve (7) is filled in the molecular sieve bed aluminum pipe (13), an air inlet end medium cup seat and an air exhaust end medium cup seat (14) are respectively arranged at two ends of the lithium type molecular sieve (7), a sodium type molecular sieve (15) is filled in the air inlet end medium cup seat, and the air inlet end medium cup seat and the air exhaust end medium cup seat (14) are respectively communicated with the air inlet end cover (10) and the air exhaust end cover (3).

2. The media cup mounted molecular sieve bed of claim 1, wherein: the molecular sieve bed aluminum tube (13) is a triangular aluminum tube.

3. The media cup mounted molecular sieve bed of claim 1, wherein: the air inlet end medium cup seat comprises an air inlet end medium cup seat upper cover (16) and an air inlet end medium cup seat base (17), the air inlet end medium cup seat upper cover (16) and the air inlet end medium cup seat base (17) are formed by ultrasonically welding a plastic part (30) and a 120-mesh stainless steel screen (18), and the sodium type molecular sieve (15) is filled between the air inlet end medium cup seat upper cover (16) and the air inlet end medium cup seat base (17).

4. A media cup mounted molecular sieve bed as claimed in claim 3 wherein: the air inlet end medium cup base comprises an air inlet end medium cup base upper cover (16) and an air inlet end medium cup base (17), wherein one end portion, close to an air inlet end cover (10), of the end portion is respectively provided with a first lip-shaped flanging (19) and a second lip-shaped flanging (20) along the circumferential direction of the end portion, the first lip-shaped flanging (19) is attached to and tightly presses the inner surface of the air inlet end medium cup base (17), and the second lip-shaped flanging (20) is attached to and tightly presses the inner surface of a molecular sieve bed aluminum pipe (13).

5. The media cup mounted molecular sieve bed of claim 1, wherein: the exhaust end medium cup seat (14) is formed by ultrasonically welding a plastic part (30) and a 120-mesh stainless steel screen (18), a third lip-shaped flanging (21) is arranged at one end part, close to the exhaust end cover (3), of the exhaust end medium cup seat (14) along the circumferential direction of the exhaust end medium cup seat, and the third lip-shaped flanging (21) is attached to and tightly presses the inner surface of the molecular sieve bed aluminum pipe (13).

6. A media cup mounted molecular sieve bed as claimed in claim 3 wherein: the air inlet end medium cup seat upper cover (16) and the air outlet end medium cup seat (14) are both provided with a flow blocking sheet (22), and the flow blocking sheets (22) are ultrasonically welded on a 120-mesh stainless steel screen (18) of the air inlet end medium cup seat upper cover (16) and the air outlet end medium cup seat (14).

7. A media cup mounted molecular sieve bed as claimed in claim 3 wherein: a plurality of injection molding first diversion trenches (23) and second diversion trenches (24) are respectively arranged in the air inlet end medium cup seat upper cover (16) and the air outlet end medium cup seat (14).

8. The media cup mounted molecular sieve bed of claim 1, wherein: the opposite surfaces of the air inlet end cover (10) and the air outlet end cover (3) are provided with grooves (25) along the circumferential direction, the end parts of the two ends of the molecular sieve bed aluminum pipe (13) are respectively positioned in the grooves (25) of the air inlet end cover (10) and the air outlet end, and a sealing gasket (4) is arranged in the groove (25) of the air inlet end cover (10).

9. A media cup mounted molecular sieve bed as claimed in claim 3 wherein: and a filtering foam (27) is arranged between the air inlet end medium cup base upper cover (16) and the air inlet end cover (10), a compression spring (2) is arranged outside the filtering foam (27), and two ends of the compression spring (2) are respectively contacted with the air inlet end cover (10) and the air inlet end medium cup base upper cover.

10. The media cup mounted molecular sieve bed of claim 1, wherein: coupling assembling includes screw rod (28), and fixed through nut (29) after air inlet end cover (10) and exhaust end cover (3) are run through respectively at the both ends of screw rod (28), all be equipped with between nut (29) and air inlet end cover (10) and exhaust end cover (3) flat gasket (26).

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