CN220328299U - Integrated molecular sieve - Google Patents

Integrated molecular sieve Download PDF

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Publication number
CN220328299U
CN220328299U CN202321829396.1U CN202321829396U CN220328299U CN 220328299 U CN220328299 U CN 220328299U CN 202321829396 U CN202321829396 U CN 202321829396U CN 220328299 U CN220328299 U CN 220328299U
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molecular
tower
nitrogen
cavity
oxygen
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CN202321829396.1U
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Inventor
郭本胜
李昌才
李海洋
梁锐
丁松林
冷宇航
吕涛
张静
代鹏
张玉玲
陶瑞杰
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Hefei Kangjuren Medical Device Technology Co ltd
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Hefei Kangjuren Medical Device Technology Co ltd
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Abstract

The utility model discloses an integrated molecular sieve, which comprises a first molecular tower, a second molecular tower, an oxygen storage cavity and a nitrogen discharge cavity, wherein the oxygen storage cavity and the nitrogen discharge cavity are arranged between the first molecular tower and the second molecular tower; the first molecular tower is connected with a first air inlet and a first oxygen outlet; the second molecular tower is connected with a second air inlet and a second oxygen outlet; the first oxygen outlet and the second oxygen outlet are communicated with the oxygen storage cavity; the oxygen storage cavity is also connected with an oxygen discharge port; the nitrogen discharging cavity is connected with a nitrogen inlet and a plurality of nitrogen discharging openings, and the nitrogen inlet is alternately communicated with the first air inlet and the second air inlet; the cross sections of the first molecular tower and the second molecular tower are D-shaped; the integrated molecular sieve changes the structure of a molecular tower only in the conventional molecular sieve in the prior art, simultaneously changes the cross section shape of a molecular tower cavity in the prior art, increases the area utilization rate of a molecular sieve cylinder, increases the volume of the molecular tower cavity under the condition of not increasing the cross section of the molecular sieve, and ensures the oxygen production efficiency of the molecular sieve.

Description

Integrated molecular sieve
Technical Field
The utility model relates to the technical field of molecular sieves, in particular to an integrated molecular sieve.
Background
Molecular sieves are important components in medical and household oxygenerators, and the molecular sieves are used for separating oxygen from nitrogen in air by using a pressure swing adsorption technology to obtain high-concentration oxygen for patients to inhale oxygen.
In the prior art, the molecular sieve in the oxygenerator comprises two molecular towers, the two molecular towers alternately produce oxygen and analyze, the oxygen separated from the molecular towers directly enters an external oxygen outlet tank, and the separated nitrogen enters an external silencer, so that the oxygenerator has more related structures, more complicated pipelines and larger volume, and cannot meet the miniaturization pursuit of people on the oxygenerator in the prior art.
Disclosure of Invention
The utility model aims to provide an integrated molecular sieve, which changes the structure of a molecular sieve only with a molecular tower in the prior art, changes the cross section shape of a molecular tower cavity in the prior art, increases the area utilization rate of a molecular sieve cylinder, increases the volume of the molecular tower cavity under the condition of not increasing the cross section of the molecular sieve, and ensures the oxygen production efficiency of the molecular sieve.
The integrated molecular sieve comprises a sieve cylinder, wherein the sieve cylinder comprises a first molecular tower, a second molecular tower, an oxygen storage cavity and a nitrogen discharge cavity, the first molecular tower and the second molecular tower are oppositely arranged, and the oxygen storage cavity and the nitrogen discharge cavity are arranged between the first molecular tower and the second molecular tower;
one end of the first molecular tower is connected with a first air inlet, and the other end of the first molecular tower is connected with a first oxygen outlet; one end of the second molecular tower is connected with a second air inlet, and the other end of the second molecular tower is connected with a second oxygen outlet; the first oxygen outlet and the second oxygen outlet are communicated with the oxygen storage cavity; an oxygen discharge port is also connected to the oxygen storage cavity;
the nitrogen discharging cavity is connected with a nitrogen inlet and a plurality of nitrogen discharging openings, and the nitrogen inlet is alternately communicated with the first air inlet and the second air inlet;
the first molecular tower and the second molecular tower respectively comprise a first side surface and a second side surface which are oppositely arranged, the first side surface is a plane, the second side surface is an arc surface, the edges of the two sides of the arc surface are respectively connected with a first connecting surface and a second connecting surface, and the edges of the first connecting surface and the second connecting surface, which are far away from the arc surface, are respectively connected with the edges of the two sides of the first side surface to form a molecular tower cavity with a D-shaped cross section;
the first side surface of the first molecular tower is close to the first side surface of the second molecular tower, and the oxygen storage cavity and the nitrogen discharge cavity are positioned between the two first side surfaces.
Preferably, an isolation surface parallel to the axial direction of the screen cylinder is connected between the two first side surfaces, the isolation surface separates the two first side surfaces in an area to obtain the oxygen storage cavity and the nitrogen discharge cavity, the two first side surfaces are respectively two sides of the oxygen storage cavity, the two first connection surfaces are butted to form an outer side surface of the oxygen storage cavity, and the two second connection surfaces are butted to form an outer side surface of the nitrogen discharge cavity.
Preferably, the integrated molecular sieve further comprises a first end cover and a second end cover, the sieve cylinder is fixed between the first end cover and the second end cover, and two ends of the sieve cylinder are respectively sealed with the first end cover and the second end cover;
the cross sections of the first end cover and the second end cover are matched with the cross section of the screen cylinder, and a first supporting surface and a second supporting surface are arranged on the inner surfaces of the first end cover and the second end cover facing the screen cylinder; the first side surface and the second side surface are respectively arranged on the first supporting surface and the second supporting surface and are sealed; the first oxygen outlet and the second oxygen outlet are respectively arranged on the first supporting surface and the second supporting surface.
Preferably, the first air inlet, the second air inlet, the oxygen outlet and the nitrogen inlet are all arranged on the first end cover, and the first oxygen outlet and the second oxygen outlet are arranged on the second end cover.
Preferably, the first molecular tower and the second molecular tower face the first end cover end, and a limiting spring, a first mesh support plate and a first filter cotton sheet are sequentially arranged along the axial direction of the screen cylinder, the limiting spring is arranged between the first mesh support plate and the inner side surface of the first end cover, and the first filter cotton sheet is in contact with molecular sieve particles in the molecular tower cavity;
the first molecular tower and the second molecular tower face towards the second end cover end, and the second mesh support plate and the second filter cotton piece are sequentially arranged along the axial direction of the screen cylinder, the second filter cotton piece is arranged between the second mesh support plate and the inner side surface of the second end cover, and the first oxygen outlet and the second oxygen outlet are positioned between the second filter cotton piece and the inner side surface of the second end cover.
Preferably, the isolation surface faces the side surface of the nitrogen removal cavity, a semicircular groove is formed in the side surface of the nitrogen removal cavity, the axis of the semicircular groove is parallel to the axis of the screen cylinder, two ends of the semicircular groove are propped against the first end cover and the second end cover to form a nitrogen removal channel communicated with the nitrogen removal cavity, and the nitrogen removal port is formed in the first end cover and the second end cover and communicated with the nitrogen removal channel.
The integrated molecular sieve has the beneficial effects that:
1. the oxygen storage cavity and the nitrogen discharge cavity are integrated in the screen cylinder, so that the internal structure of the oxygenerator is simplified, and the fault rate of the oxygenerator is reduced. Simultaneously, the nitrogen discharging cavity is arranged in the screen cylinder, so that the nitrogen discharging noise is improved.
2. The cross sections of the molecular tower cavities of the first molecular tower and the second molecular tower are designed to be approximately D-shaped, and under the condition that the cross section area of the screen drum is unchanged, the capacity of the molecular tower cavities is increased, and the oxygen production efficiency of the first molecular tower and the second molecular tower is increased.
Drawings
Fig. 1 is a schematic structural diagram of an integrated molecular sieve according to the present disclosure.
Fig. 2 is an exploded view of an integrated molecular sieve according to the present disclosure.
Fig. 3 is a schematic view illustrating another view angle state of fig. 2.
Fig. 4 is a schematic cross-sectional view of a screen cylinder.
Fig. 5 is a schematic diagram illustrating connection between the second end cover and the sieve cylinder in the integrated molecular sieve according to the present disclosure.
Detailed Description
In order to facilitate the understanding of the technical scheme of the present utility model by those skilled in the art, the technical scheme of the present utility model will be further described with reference to specific embodiments and drawings attached to the specification.
As shown in fig. 1 and fig. 2, the integrated molecular sieve according to the technical scheme of the utility model comprises a sieve cylinder 1, wherein the sieve cylinder 1 comprises a first molecular tower 11, a second molecular tower 12, an oxygen storage cavity 13 and a nitrogen discharge cavity 14, the first molecular tower 11 and the second molecular tower 12 are oppositely arranged, and the oxygen storage cavity 13 and the nitrogen discharge cavity 14 are arranged between the first molecular tower 11 and the second molecular tower 12. In this scheme, compare with traditional split type sieve section of thick bamboo, play oxygen jar, nitrogen removal amortization jar, with storing up oxygen chamber 13 and nitrogen removal chamber 14 integration and obtaining integrated molecular sieve in the sieve section of thick bamboo, with low costs, simple structure, control is convenient, simplifies oxygenerator inner structure, long service life, and the fault rate is low, uses and maintenance cost is all low. Meanwhile, the nitrogen discharging cavity 14 is integrated in the screen cylinder, so that a better sound insulation effect can be further obtained, the silencing effect of the oxygenerator is improved, and the low-noise oxygenerator is obtained.
In this scheme, first molecular tower and second molecular tower symmetry set up. One end of the first molecular tower 11 is connected with a first air inlet 42, and the other end is connected with a first oxygen outlet. One end of the second molecular tower 12 is connected with a second air inlet 43, and the other end is connected with a second oxygen outlet 46. The first oxygen outlet and the second oxygen outlet 46 are communicated with the oxygen storage cavity 13, and oxygen produced in the first molecular tower 11 and the second molecular tower 12 continuously enters the oxygen storage cavity through the first oxygen outlet and the second oxygen outlet 46 respectively. The oxygen storage cavity 13 is also connected with an oxygen discharge port 41; the nitrogen discharging cavity 14 is connected with a nitrogen inlet 44 and a plurality of nitrogen discharging openings 45, and the nitrogen inlet 44 is alternately communicated with the first air inlet 42 and the second air inlet 43.
In the prior art, the molecular sieve is generally matched with a gas distribution valve, and the gas distribution valve is generally a three-position four-way electromagnetic valve. The three-position four-way solenoid valve is provided with a valve port A, B, P, R, wherein the valve port P is an air inlet and is communicated with an air outlet of an air delivery pump or a compressor to supply air for the molecular sieve, and the valve port R is an air outlet to realize nitrogen discharge for the molecular sieve, and the valve port A and the valve port B are respectively and alternately communicated with the valve port P and the valve port R. Namely, when the valve port A is communicated with the valve port P, the valve port B is communicated with the valve port R, at the moment, the gas distribution valve supplies air to the valve port A and simultaneously discharges nitrogen at the position of the valve port B, or when the valve port B is communicated with the valve port P, the valve port A is communicated with the valve port R, at the moment, the gas distribution valve supplies air to the valve port B and simultaneously discharges nitrogen at the position of the valve port A. In combination with the above technical solution, the valve port a and the valve port B of the gas distribution valve are respectively connected with the first air inlet 42 and the second air inlet 43, the valve port P is connected with an external compressor or an air delivery pump, and the valve port R is communicated with the nitrogen inlet 44. The nitrogen at the positions of the valve port A and the valve port B alternately passes through the inside of the gas distribution valve and then sequentially passes through the valve port R and the nitrogen inlet 44 to enter the nitrogen discharge cavity 14, so that the alternate communication between the nitrogen inlet 44 and the first air inlet 42 and the second air inlet 43 is realized.
In this embodiment, as shown in fig. 4, the first molecular tower 11 and the second molecular tower 12 each include a first side 111 and a second side 112 that are disposed opposite to each other. The first side 111 is a plane, the second side 112 is an arc surface, and two side edges of the arc surface are respectively connected with a first connecting surface 113 and a second connecting surface 114. The side edges of the first connecting surface 113 and the second connecting surface 114 far away from the arc surface are respectively connected with the two side edges of the first side surface 111 to form a molecular tower cavity with a D-shaped cross section. The first side 111 of the first molecular tower 11 is close to the first side 111 of the second molecular tower 12, and the oxygen storage chamber 13 and the nitrogen discharge chamber 14 are located between the two first sides 111.
Based on the above technical scheme, the molecular tower cavities of the first molecular tower 11 and the second molecular tower 12 are designed into a D shape, and meanwhile, the oxygen storage cavity 13 and the nitrogen discharge cavity 14 are arranged between the two first side surfaces 111, so that the space in the range where the cross section of the sieve cylinder is positioned is reasonably utilized, the molecular tower cavity solvents of the first molecular tower 11 and the second molecular tower 12 are increased on the premise of not increasing the cross section area of the sieve cylinder, and the oxygen production efficiency of the molecular sieve is increased.
In this embodiment, as shown in fig. 3 and 4, a separation surface 115 parallel to the axial direction of the screen cylinder 1 is connected between the two first side surfaces 111. The isolation surface 115 divides the area between the two first side surfaces 111 to obtain the oxygen storage cavity 13 and the nitrogen discharge cavity 14, the two first side surfaces 111 are two sides of the oxygen storage cavity 13 respectively, the two first connection surfaces 113 are butted to form an outer side surface of the oxygen storage cavity 13, and the two second connection surfaces 114 are butted to form an outer side surface of the nitrogen discharge cavity 14. The internal structure of the sieve cylinder is simple and regular, and the volumes of the oxygen storage cavity 13 and the nitrogen discharge cavity 14 are increased.
In this scheme, as shown in fig. 3 and 4, the integrated molecular sieve further includes a first end cover 2 and a second end cover 3, the screen cylinder 1 is fixed between the first end cover 2 and the second end cover 3, and two ends of the screen cylinder 1 are respectively sealed with the first end cover 2 and the second end cover 3. The cross sections of the first end cover 2 and the second end cover 3 are matched with the cross section of the screen drum 1. The first end cap 2 and the second end cap 3 are provided with a first support surface 35 and a second support surface 36 on the inner surface facing the screen cylinder 1. The first side 111 and the second side 112 are placed on the first support surface 35 and the second support surface 36, respectively, and sealed. As shown in fig. 3, a first sealing ring 24 and a second sealing ring 34 are arranged on the first end cover 2 and the second end cover 3, and two ends of the screen cylinder are respectively contacted with the first sealing ring 24 and the second sealing ring 34, so that the screen cylinder is fixedly connected with the first end cover and the second end cover in a sealing way. The first and second oxygen outlets 46 are provided on the first and second support surfaces 35, 36, respectively. The first support surface 35 and the second support surface 36 in the second end cover provide positions for installing the first oxygen outlet and the second oxygen outlet 46, and the first oxygen outlet and the second oxygen outlet 46 are respectively and directly communicated with the oxygen storage cavity 13 and the first molecular tower 11 and the second molecular tower 12. The first end cover and the second end cover realize the installation of the screen cylinder.
In this embodiment, the first air inlet 42, the second air inlet 43, the oxygen outlet 41 and the nitrogen inlet 44 are all disposed on the first end cover 2, and the first oxygen outlet and the second oxygen outlet 46 are disposed on the second end cover 3. The first air inlet 42 and the second air inlet 43 are in direct communication with the first molecular tower 11 and the second molecular tower 12, respectively. The nitrogen inlet 44 is in direct communication with the nitrogen removal chamber and the oxygen outlet 41 is in direct communication with the oxygen storage chamber.
In this scheme, first molecular tower 11 and second molecular tower 12 are towards first end cover 2 end, along screen cylinder 1 axis direction, have all set gradually spacing spring 21, first mesh backup pad 22 and first filter cotton piece 23, and spacing spring 21 sets up between first mesh backup pad 22 and first end cover 2 medial surface, and first filter cotton piece 23 and molecular tower intracavity molecular sieve granule contact. The first molecular tower 11 and the second molecular tower 12 face the second end cover 3 end, and along the axis direction of the screen drum 1, a second mesh support plate 31 and a second filter cotton piece 32 are sequentially arranged, the second filter cotton piece 32 is arranged between the second mesh support plate 31 and the inner side surface of the second end cover 3, and a first oxygen outlet and a second oxygen outlet 46 are positioned between the second filter cotton piece 32 and the inner side surface of the second end cover 3.
In the above scheme, the molecular sieve in the molecular tower cavity is fixed through the first mesh support plate 22 and the second mesh support plate 31, the first filter cotton piece 23 and the second filter cotton piece 32 respectively realize the filtration of impurities in the air and the filtration of impurities in the oxygen to be output, the first filter cotton piece 23 avoids impurities in the air to enter the molecular tower as much as possible, the second filter cotton piece 32 avoids impurities in the molecular tower to be output to the oxygen storage cavity along with the oxygen, and clean oxygen is ensured to be obtained.
In this technical solution, as shown in fig. 3 and 4, a semicircular groove is disposed on a side surface of the isolation surface 115 facing the nitrogen discharge cavity 14, the axis of the semicircular groove is parallel to the axis of the screen drum 1, two ends of the semicircular groove are propped against the first end cover 2 and the second end cover 3 to form a nitrogen discharge channel 15 communicated with the nitrogen discharge cavity 14, and nitrogen discharge ports 45 are disposed on the first end cover 2 and the second end cover 3 and are all communicated with the nitrogen discharge channel 15. By arranging the nitrogen discharge channel 15, on one hand, the volume of the nitrogen cavity is increased, and the silencing effect is improved. Simultaneously, the two ends of the nitrogen discharging channel 15 and the outer side surface of the nitrogen discharging cavity are provided with nitrogen discharging openings 45, so that the nitrogen discharging position is increased, the nitrogen discharging is accelerated, and the low-noise nitrogen discharging is ensured.
While the present utility model has been described above by way of example with reference to the embodiments and the accompanying drawings, it is apparent that the specific implementation of the present utility model is not limited by the foregoing, and it is within the scope of the present utility model to apply the inventive concept and technical solution to other situations without any substantial improvement or improvement.

Claims (6)

1. The integrated molecular sieve is characterized by comprising a sieve cylinder, wherein the sieve cylinder comprises a first molecular tower, a second molecular tower, an oxygen storage cavity and a nitrogen discharge cavity, the first molecular tower and the second molecular tower are oppositely arranged, and the oxygen storage cavity and the nitrogen discharge cavity are arranged between the first molecular tower and the second molecular tower;
one end of the first molecular tower is connected with a first air inlet, and the other end of the first molecular tower is connected with a first oxygen outlet; one end of the second molecular tower is connected with a second air inlet, and the other end of the second molecular tower is connected with a second oxygen outlet; the first oxygen outlet and the second oxygen outlet are communicated with the oxygen storage cavity; an oxygen discharge port is also connected to the oxygen storage cavity;
the nitrogen discharging cavity is connected with a nitrogen inlet and a plurality of nitrogen discharging openings, and the nitrogen inlet is alternately communicated with the first air inlet and the second air inlet;
the first molecular tower and the second molecular tower respectively comprise a first side surface and a second side surface which are oppositely arranged, the first side surface is a plane, the second side surface is an arc surface, the edges of the two sides of the arc surface are respectively connected with a first connecting surface and a second connecting surface, and the edges of the first connecting surface and the second connecting surface, which are far away from the arc surface, are respectively connected with the edges of the two sides of the first side surface to form a molecular tower cavity with a D-shaped cross section;
the first side surface of the first molecular tower is close to the first side surface of the second molecular tower, and the oxygen storage cavity and the nitrogen discharge cavity are positioned between the two first side surfaces.
2. The integrated molecular sieve of claim 1, wherein a separation surface parallel to the axial direction of the sieve cylinder is connected between the two first side surfaces, the separation surface separates the two first side surfaces from each other to obtain the oxygen storage cavity and the nitrogen discharge cavity, the two first side surfaces are respectively two sides of the oxygen storage cavity, the two first connection surfaces are butted to form an outer side surface of the oxygen storage cavity, and the two second connection surfaces are butted to form an outer side surface of the nitrogen discharge cavity.
3. The integrated molecular sieve of claim 2, further comprising a first end cap and a second end cap, wherein the sieve cylinder is secured between the first end cap and the second end cap and wherein both ends of the sieve cylinder are sealed to the first end cap and the second end cap, respectively;
the cross sections of the first end cover and the second end cover are matched with the cross section of the screen cylinder, and a first supporting surface and a second supporting surface are arranged on the inner surfaces of the first end cover and the second end cover facing the screen cylinder; the first side surface and the second side surface are respectively arranged on the first supporting surface and the second supporting surface and are sealed; the first oxygen outlet and the second oxygen outlet are respectively arranged on the first supporting surface and the second supporting surface.
4. The integrated molecular sieve of claim 3, wherein the first air inlet, the second air inlet, the oxygen vent, and the nitrogen inlet are all disposed on the first end cap, and the first oxygen outlet and the second oxygen outlet are disposed on the second end cap.
5. The integrated molecular sieve according to claim 3, wherein the first molecular tower and the second molecular tower are towards the first end cover end, and a limiting spring, a first mesh support plate and a first filter cotton sheet are sequentially arranged along the axial direction of the sieve cylinder, the limiting spring is arranged between the first mesh support plate and the inner side surface of the first end cover, and the first filter cotton sheet is in contact with molecular sieve particles in the molecular tower cavity;
the first molecular tower and the second molecular tower face towards the second end cover end, and the second mesh support plate and the second filter cotton piece are sequentially arranged along the axial direction of the screen cylinder, the second filter cotton piece is arranged between the second mesh support plate and the inner side surface of the second end cover, and the first oxygen outlet and the second oxygen outlet are positioned between the second filter cotton piece and the inner side surface of the second end cover.
6. The integrated molecular sieve of claim 3, wherein a semicircular groove is formed in a side surface of the isolation surface facing the nitrogen removal cavity, the axis of the semicircular groove is parallel to the axis of the sieve cylinder, two ends of the semicircular groove are propped against the first end cover and the second end cover to form a nitrogen removal channel communicated with the nitrogen removal cavity, and the nitrogen removal ports are formed in the first end cover and the second end cover and are communicated with the nitrogen removal channel.
CN202321829396.1U 2023-07-12 2023-07-12 Integrated molecular sieve Active CN220328299U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321829396.1U CN220328299U (en) 2023-07-12 2023-07-12 Integrated molecular sieve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321829396.1U CN220328299U (en) 2023-07-12 2023-07-12 Integrated molecular sieve

Publications (1)

Publication Number Publication Date
CN220328299U true CN220328299U (en) 2024-01-12

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ID=89445647

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321829396.1U Active CN220328299U (en) 2023-07-12 2023-07-12 Integrated molecular sieve

Country Status (1)

Country Link
CN (1) CN220328299U (en)

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