CN213475421U

CN213475421U - Oxygen generation system

Info

Publication number: CN213475421U
Application number: CN202020261502.0U
Authority: CN
Inventors: 曹大林; 张健; 李福林; 许一帆
Original assignee: Carer Medical Equipment Co ltd
Current assignee: Carer Medical Equipment Co ltd
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2021-06-18
Anticipated expiration: 2030-03-05

Abstract

The utility model discloses an oxygen generation system, which comprises a combination valve, at least one molecular sieve and an oxygen storage tank, wherein the combination valve is fixedly connected with the molecular sieve, one surface of the combination valve, which is back to the molecular sieve, is provided with an air inlet and an air outlet, and one surface of the combination valve, which faces the molecular sieve, is provided with an A port and a B port; the molecular sieve comprises an upper cover plate, a sieve barrel fixedly connected with the upper cover plate and a lower cover plate fixedly connected with the sieve barrel, wherein a first hole communicated with the port A and a second hole communicated with the port B are formed in the upper cover plate. The utility model provides an oxygen system has cancelled the structure that combination valve and upper cover plate pass through quick-operation joint and aluminum pipe connection among the current oxygen system, has eliminated the gas leakage hidden danger, has improved the stability of oxygen system complete machine by a wide margin.

Description

Oxygen generation system

Technical Field

The utility model relates to the technical field of medical equipment, in particular to oxygen generation system.

Background

The oxygen generating system is also called as a molecular sieve Pressure Swing Adsorption (PSA) oxygen generating system, which takes molecular sieve (molecular sieve) as an adsorbent, takes ambient air as a raw material through a Pressure Swing Adsorption (PSA), and forms a rapid cycle process of pressure adsorption and pressure reduction desorption by utilizing the characteristics that the adsorption capacity of the molecular sieve for nitrogen (adsorbate) in the air is increased and the adsorption capacity for nitrogen in the air is reduced when the molecular sieve is pressurized and the adsorption capacity for nitrogen in the air is reduced under the conditions of normal temperature and low pressure, so that oxygen and nitrogen in the air are separated, carbon dioxide, gaseous acid, other gaseous oxides and the like in the air belong to substances with strong molecular polarity, and the oxygen generated by the molecular sieve hardly passes through the molecular sieve, so that the purity of the oxygen reaches more than 93% v/v.

The scheme of the existing oxygen generation system comprises a pneumatic combination valve and an oxygen generation assembly, the pneumatic combination valve and the oxygen generation assembly are connected through a quick connector, the whole machine aging test on the oxygen generation system is found, the air leakage problem exists in the quick connector between the pneumatic combination valve and the oxygen generation assembly, and the whole machine oxygen generation performance is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an oxygen system, eliminated the gas leakage hidden danger that the quick-operation joint tie structure that exists in the current oxygen system scheme constructs, improved the system oxygen stability of oxygen system complete machine.

In order to solve the technical problem, the utility model discloses a technical scheme as follows:

the utility model provides an oxygen generation system, which comprises a combination valve, at least one molecular sieve and an oxygen storage tank, wherein the combination valve is fixedly connected with the molecular sieve, one surface of the combination valve, which is back to the molecular sieve, is provided with an air inlet and an air outlet, and one surface of the combination valve, which faces the molecular sieve, is provided with an A port and a B port; the molecular sieve comprises an upper cover plate, a sieve barrel fixedly connected with the upper cover plate and a lower cover plate fixedly connected with the sieve barrel, wherein a first hole communicated with the opening A and a second hole communicated with the opening B are formed in the upper cover plate, a first sealing ring is arranged on the periphery of the first hole, a second sealing ring is arranged on the periphery of the second hole, the opening A passes through the first sealing ring and is fixedly connected with the first hole in a sealing manner, the opening B passes through the second sealing ring and is fixedly connected with the second hole in a sealing manner, and the oxygen storage tank and the lower cover plate are fixedly connected.

Furthermore, a first ring groove used for containing the first sealing ring is formed in the periphery of the first hole, and a second ring groove used for containing the second sealing ring is formed in the periphery of the second hole.

Further, a connecting strip is arranged between the first sealing ring and the second sealing ring, and the first sealing ring is fixedly connected with the second sealing ring through the connecting strip.

Furthermore, a groove for accommodating the connecting strip is formed in the upper cover.

Further, first sealing washer, connecting strip and second sealing washer integrated into one piece.

Furthermore, one surface of the upper cover plate, which is back to the screen drum, is provided with a plurality of groove structures.

Furthermore, the upper cover plate and the one side of a sieve section of thick bamboo fixed connection offer with a sieve section of thick bamboo upper end mouth complex sealed draw-in groove, sealed draw-in groove including be used for with sieve section of thick bamboo outer wall matched with recess, be used for fixed sieve section of thick bamboo in the arc structure of sieve core and with the communicating gas passage of a sieve section of thick bamboo, the arc structure is located recess inner zone, gas passage follows upper cover plate length direction extends.

Further, the groove comprises a groove outer wall, a groove bottom plate and a groove inner wall, and the height of the groove outer wall is larger than that of the groove inner wall.

Further, the number of the molecular sieves is 2, and the molecular sieves comprise a first sieve cylinder and a second sieve cylinder, wherein the first sieve cylinder and the second sieve cylinder are symmetrically arranged along the central line of the upper cover plate.

Further, the oxygen storage tank is located between the first sieve cylinder and the second sieve cylinder, and a pressure regulating valve is arranged at the upper end of the oxygen storage tank.

Compared with the prior art, the technical scheme of the utility model have following advantage and beneficial effect: the utility model provides an oxygen generation system, which comprises a combination valve, at least one molecular sieve and an oxygen storage tank, wherein the combination valve is fixedly connected with the molecular sieve, one surface of the combination valve, which is back to the molecular sieve, is provided with an air inlet and an air outlet, and one surface of the combination valve, which faces the molecular sieve, is provided with an A port and a B port; the molecular sieve comprises an upper cover plate, a sieve barrel fixedly connected with the upper cover plate and a lower cover plate fixedly connected with the sieve barrel, wherein a first hole communicated with the opening A and a second hole communicated with the opening B are formed in the upper cover plate, a first sealing ring is arranged on the periphery of the first hole, a second sealing ring is arranged on the periphery of the second hole, the opening A passes through the first sealing ring and is fixedly connected with the first hole in a sealing manner, the opening B passes through the second sealing ring and is fixedly connected with the second hole in a sealing manner, and the oxygen storage tank and the lower cover plate are fixedly connected. The utility model provides an oxygen system has cancelled the structure that combination valve and upper cover plate pass through quick-operation joint and aluminum pipe connection among the current oxygen system, has eliminated the gas leakage hidden danger, has improved the stability of oxygen system complete machine by a wide margin.

Drawings

FIG. 1 is a schematic front view of an oxygen generation system in an embodiment;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic perspective view of a combination valve according to an embodiment;

FIG. 4 is another perspective view of the combination valve of the embodiment;

FIG. 5 is a schematic perspective view of the molecular sieve in the example;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a schematic bottom view of the upper cover plate of the embodiment;

fig. 8 is a schematic front view of an upper cover plate in the embodiment.

In the figure: 1-a combination valve; 11-an air inlet; 12-an exhaust port; 13-A port; port 14-B; 2-a molecular sieve; 21-upper cover plate; 211 — a first hole; 212-a second aperture; 22-a screen cylinder; 221-a first screen cylinder; 222-a second screen cylinder; 23-a lower cover plate; 24-a first sealing ring; 241-first ring groove; 25-a second seal ring; 251-a second ring groove; 26-a connecting strip; 261-a first groove; 28-sealing the clamping groove; 281-second recess; 282-arc configuration; 283-a gas channel; 3-an oxygen storage tank; 31-a pressure regulating valve; 4-the outer wall of the groove; 5-a groove bottom plate; 6-inner wall of groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, product, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product, or apparatus.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly. To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

Examples

As shown in fig. 1-8, this embodiment provides an oxygen generation system, which includes a combination valve 1, a molecular sieve 2 and an oxygen storage tank 3, wherein the combination valve 1 is fixedly connected to the molecular sieve 2 (in this embodiment, fixedly connected to a screw hole), an air inlet 11 and an air outlet 12 are disposed on a side of the combination valve 1 facing away from the molecular sieve 2, the air inlet 11 is used for inputting air into the combination valve 1, and the air outlet 12 is used for discharging nitrogen from the combination valve 1; one surface of the combination valve 1 facing the molecular sieve 2 is provided with an A port 13 and a B port 14, and the A port 13 and the B port 14 are used for inputting air into the molecular sieve 2 and discharging nitrogen; the molecular sieve 2 comprises an upper cover plate 21, a sieve cylinder 22 fixedly connected with the upper cover plate 21 and a lower cover plate 23 fixedly connected with the sieve cylinder 22, the upper cover plate 21 is provided with a first hole 211 communicated with the port A13 and a second hole 212 communicated with the port B14, and the first hole 211 and the second hole 212 are used for inputting air in the combination valve 1 into the molecular sieve 2 and outputting nitrogen fed back from the molecular sieve 2 to the combination valve 1; a first sealing ring 24 is arranged on the periphery of the first hole 211, a second sealing ring 25 is arranged on the periphery of the second hole 212, and the first sealing ring 24 and the second sealing ring 25 are respectively used for sealing the joints between the port A13 and the first hole 211 and between the port B14 and the second hole 212; the port a 13 is fixedly connected with the first hole 211 in a sealing manner through the first sealing ring 24, the port B14 is fixedly connected with the second hole 212 in a sealing manner through the second sealing ring 25, and the oxygen storage tank 3 is fixedly connected with the lower cover plate 23.

In order to facilitate the installation and fixation of the sealing ring, in one embodiment, the first hole 211 has a first ring groove 241 for accommodating the first sealing ring 24, and the second hole 212 has a second ring groove 251 for accommodating the second sealing ring 25.

A plurality of independent sealing rings are easy to lose in the storage or installation process, in one embodiment, a connecting strip 26 is arranged between the first sealing ring 24 and the second sealing ring 25, the first sealing ring 24 and the second sealing ring 25 are fixedly connected through the connecting strip 26, and the two sealing rings are connected into a whole, so that the possibility of losing the sealing rings is effectively reduced, and meanwhile, the installation efficiency of the sealing rings is greatly improved.

To facilitate the installation of the connecting bar 26, in one embodiment, the upper cover 21 is opened with a first groove 261 for accommodating the connecting bar 26.

In order to increase the service life of the sealing ring, in one embodiment, the first sealing ring 24, the connecting strip 26 and the second sealing ring 25 are integrally formed.

In order to further reduce the production cost, save the material and reduce the overall quality of the oxygen production system, in one embodiment, the side of the upper cover plate 21 facing away from the screen cylinder 22 is provided with a plurality of groove structures 27.

In one embodiment, a sealing slot 28 matched with an upper port of the screen drum 22 is formed in one side of the upper cover plate 21 fixedly connected with the screen drum 22, the sealing slot 28 facilitates the fixed connection between the screen drum 22 and the upper cover plate 21, the sealing slot 28 includes a second groove 281 matched with an outer wall of the screen drum 22, an arc-shaped structure 282 used for fixing a screen core in the screen drum 22, and a gas channel 283 communicated with the screen drum 22, the arc-shaped structure 282 is located in an inner region of the second groove, the gas channel 283 is located in the inner region of the second groove, and the gas channel 283 extends along the length direction of the upper cover plate 21.

In one embodiment, the second groove 281 comprises a groove outer wall 1, a groove bottom plate 2 and a groove inner wall 3, and the height of the groove outer wall 1 is greater than that of the groove inner wall 3.

In one embodiment, the number of the screen cylinders 22 is 2, and the screen cylinders include a first screen cylinder 221 and a second screen cylinder 222, and the first screen cylinder 221 and the second screen cylinder 222 are symmetrically arranged along a center line of the upper cover plate 21.

In one embodiment, the oxygen storage tank 3 is located between the first sieve cylinder 221 and the second sieve cylinder 222, and a pressure regulating valve 31 is disposed at an upper end of the oxygen storage tank 3. The pressure regulating valve 31 is arranged, so that the oxygen pressure in the oxygen storage tank 3 can be regulated in real time, and the oxygen storage amount in the oxygen storage tank 3 can be conveniently controlled.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An oxygen generation system comprises a combination valve, at least one molecular sieve and an oxygen storage tank, wherein the combination valve is fixedly connected with the molecular sieve; the molecular sieve comprises an upper cover plate, a sieve barrel fixedly connected with the upper cover plate and a lower cover plate fixedly connected with the sieve barrel, wherein a first hole communicated with the opening A and a second hole communicated with the opening B are formed in the upper cover plate, a first sealing ring is arranged on the periphery of the first hole, a second sealing ring is arranged on the periphery of the second hole, the opening A passes through the first sealing ring and is fixedly connected with the first hole in a sealing manner, the opening B passes through the second sealing ring and is fixedly connected with the second hole in a sealing manner, and the oxygen storage tank and the lower cover plate are fixedly connected.

2. The oxygen generation system as recited in claim 1, wherein the first hole defines a first groove about an outer periphery thereof for receiving the first seal ring, and the second hole defines a second groove about an outer periphery thereof for receiving the second seal ring.

3. The oxygen generation system as recited in claim 2, wherein a connecting strip is disposed between the first sealing ring and the second sealing ring, and the first sealing ring and the second sealing ring are fixedly connected by the connecting strip.

4. The oxygen generation system as recited in claim 3, wherein the upper cover plate defines a recess for receiving the connecting bar.

5. The oxygen generation system of claim 4, wherein the first seal ring, the connecting strip, and the second seal ring are integrally formed.

6. The oxygen generation system as recited in claim 1, wherein a plurality of groove structures are formed on a surface of the upper cover plate facing away from the screen cylinder.

7. The oxygen generation system as recited in claim 1, wherein a sealing slot matched with the upper port of the screen cylinder is formed in one surface of the upper cover plate fixedly connected with the screen cylinder, the sealing slot comprises a groove matched with the outer wall of the screen cylinder, an arc-shaped structure used for fixing the screen core in the screen cylinder and a gas channel communicated with the screen cylinder, the arc-shaped structure is located in the inner area of the groove, the gas channel is located in the inner area of the groove, and the gas channel extends along the length direction of the upper cover plate.

8. The oxygen generation system as set forth in claim 7 wherein the groove comprises an outer groove wall, a bottom groove wall, and an inner groove wall, the outer groove wall having a height greater than the height of the inner groove wall.

9. The oxygen generation system as set forth in claim 1, wherein the number of the molecular sieves is 2, and the molecular sieves include a first sieve cylinder and a second sieve cylinder, and the first sieve cylinder and the second sieve cylinder are symmetrically arranged along a center line of the upper cover plate.

10. The oxygen generation system as recited in claim 9, wherein the oxygen storage tank is located between the first screen cylinder and the second screen cylinder, and a pressure regulating valve is disposed at an upper end of the oxygen storage tank.