CN217041956U - Molecular sieve tank and oxygenerator - Google Patents

Abstract

The application discloses molecular sieve jar and oxygenerator, including a jar body, top cap and bottom, the top cap can be dismantled and connect in the top of a jar body, set up on the top cap with jar communicating first gas pocket, bottom fixed connection is in the bottom of a jar body, set up on the bottom two all with jar communicating second gas pocket of body, jar body, top cap and bottom enclose to close the filter chamber that forms to have the leakproofness, the filter chamber intussuseption is filled with and filters the molecule, this application has the advantage that structural design has been optimized, overall stability is good when moving.

Description

Molecular sieve tank and oxygenerator

Technical Field

The application relates to the technical field of oxygen generators, in particular to a molecular sieve tank and an oxygen generator.

Background

The oxygen generator is a machine for preparing oxygen, and the principle of the oxygen generator is that an air separation technology is utilized, a molecular sieve tank is an important part inside the oxygen generator and is mainly used for separating nitrogen and improving the concentration of output oxygen, so that the concentration of oxygen can be improved and the efficiency of obtaining oxygen by a user can be promoted under the scene that the oxygen is thin or the dependence degree of the user on the oxygen is high.

The existing molecular sieve tank has the defects that the integral stability is poor in operation due to the fact that the internal gas circuit structural design is unreasonable and the two ends are detachable structural designs.

SUMMERY OF THE UTILITY MODEL

The application mainly aims to provide a molecular sieve tank and an oxygen generator, and aims to solve the technical problem that the overall stability is poor when the existing molecular sieve tank operates.

For realizing above-mentioned purpose, this application provides a molecular sieve jar, including a jar body, top cap and bottom, the top cap can be dismantled and connect in the top of a jar body, offer on the top cap with jar communicating first gas pocket of body, bottom fixed connection is in the bottom of a jar body, offer on the bottom two all with jar communicating second gas pocket of body, jar body, top cap and bottom enclose to close the filter chamber that forms to have the leakproofness, the filter chamber intussuseption is filled with and filters the molecule.

Optionally, the bottom cover includes a cover body connected to the tank body, a protruding portion is disposed on a top surface of the cover body, the protruding portion and an inner wall of the cover body enclose an airflow channel, a flow dividing seat is disposed at a bottom of the cover body, the two second air holes are opened in the flow dividing seat, and the two second air holes are communicated with the airflow channel.

Optionally, the projection comprises at least two arcuate projections with a space therebetween.

Optionally, a first filter sheet and a second filter sheet for compressing the filter molecules are arranged in the tank body; the top cover compresses tightly first cassette, and the bellying compresses tightly the second cassette.

Optionally, a gap between the first filter sheet and the inner wall of the tank body and a gap between the second filter sheet and the inner wall of the tank body are smaller than the particle size of the filter molecules.

Optionally, the inner wall of the bottom of the tank body is provided with a positioning step, and the positioning step is used for matching with the positioning cover body so as to enable the bottom surface of the cover body to be flush with the bottom surface of the tank body.

Optionally, a circle of sealing groove is formed in the outer side wall of the top cover, a sealing ring in contact with the inner wall of the tank body is sleeved in the sealing groove, a circle of annular groove is formed in the bottom of the top cover, a compression spring is arranged in the annular groove, and the compression spring is in contact with the top surface of the first filter sheet.

Optionally, the inner wall of the top of the tank body is provided with a limiting groove, a clamp spring is arranged in the limiting groove, and the clamp spring is in contact with the top surface of the top cover.

Optionally, the fitting relationship between the sealing ring and the tank body is an interference fit.

An oxygenerator, includes foretell molecular sieve jar.

The beneficial effect that this application can realize as follows:

when oxygen is generated, air enters from the first air hole of the top cover, and after nitrogen molecules are adsorbed by internal filtering molecules, oxygen is discharged from the second air hole on the bottom cover; during back flushing, oxygen output by the other molecular sieve tank enters from the second air hole of the bottom cover, nitrogen molecules adsorbed on filter molecules are cleaned and then discharged from the first air hole of the top cover, so that recycling is realized, the utilization rate is improved, compared with the method that a single air outlet is adopted and a three-way structure is adopted for shunting, the structure that two second air holes are directly formed in the bottom cover has airflow stability, the structure is simplified, the space occupation of the tank body is reduced, and the molecular sieve tank is favorably developed towards the direction of being smaller and more convenient to use; in addition, the one end of the tank body is sealed, the other end of the tank body is detachable, the internal pressure and the external pressure can be borne to a certain degree, air cannot leak from the internal part, and therefore structural stability and operation stability can be improved on the whole.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings that are required in the detailed description of the present application or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of a molecular sieve tank according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a portion A of FIG. 1;

FIG. 3 is a schematic view of a portion B of FIG. 1;

FIG. 4 is a schematic illustration of an exploded view of a molecular sieve tank in an embodiment of the present application;

FIG. 5 is a schematic view of a bottom cover according to an embodiment of the present application;

FIG. 6 is a schematic cross-sectional view of a can body in an embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of the canister in which the filter molecules are assembled in an embodiment of the present application.

Reference numerals:

110-a tank body, 111-a positioning step, 112-a limiting groove, 120-a top cover, 121-a first air hole, 122-a sealing groove, 123-an annular groove, 130-a bottom cover, 131-a cover body, 132-a bulge, 133-a shunt seat, 140-a second air hole, 150-an air flow channel, 160-filtering molecules, 170-a first filter sheet, 180-a second filter sheet, 190-a sealing ring, 210-a compression spring and 220-a snap spring.

The implementation, functional features and advantages of the object of the present application will be further explained with reference to the embodiments, and with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be noted that all the directional indications (such as up, down, left, right, front, and back … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

Example 1

Referring to fig. 1 to 7, the embodiment provides a molecular sieve tank, including a tank body 110, a top cover 120 and a bottom cover 130, wherein the top cover 120 is detachably connected to the top of the tank body 110, the top cover 120 is provided with a first air hole 121 communicated with the tank body 110, the bottom cover 130 is fixedly connected to the bottom of the tank body 110, the bottom cover 130 is provided with two second air holes 140 both communicated with the tank body 110, the top cover 120 and the bottom cover 130 enclose to form a sealed filter chamber, and filter molecules 160 are filled in the filter chamber.

When the existing molecular sieve tank is used for air outlet through two ends, and the inside of the molecular sieve tank is cleaned through reverse flow of air, the air outlet end is of a single-hole structure, a three-way structure needs to be connected outside for shunting, the structure is complex, the space is occupied, and the air flow is unstable during operation; meanwhile, the two ends of the conventional molecular sieve tank can be detachably connected, and the inside of the molecular sieve tank is sealed by an end cover connected in a sealing manner, so that the risk of leakage caused by the adoption of the two-end sealing manner in a long-time use process is reduced due to the fact that the particle size of the filtering molecules 160 is smaller, and the service life of the molecular sieve is shortened; in the in-service use process on the one hand will satisfy the demand that can change filtering molecule 160, on the other hand will satisfy inside good sealing performance in order to avoid filtering molecule 160 and reveal the harm that produces the user, consequently, current molecular sieve jar is because inside gas circuit structural design is unreasonable and both ends are detachable structural design, and overall stability is relatively poor when leading to moving.

Therefore, in the embodiment, when oxygen is generated, air is introduced from the first air hole 121 of the top cover 120, and after nitrogen molecules are adsorbed by the internal filtering molecules 160, oxygen is discharged from the second air hole 140 on the bottom cover 130, because the bottom cover 130 is provided with two second air holes 140, one second air hole 140 conveys oxygen to the oxygen storage cavity or nasal oxygen tube and the like at the rear end of the oxygen, and the other second air hole 140 communicates with the second air hole 140 on the bottom cover 130 in the other molecular sieve tank (for back washing connection), the two molecular sieve tanks are required to be matched when in use, so that the balance of air pressure between the two molecular sieve tanks is maintained to form alternative oxygen generation; during back flushing, oxygen output by the other molecular sieve tank enters from the second air holes 140 of the bottom cover 130, nitrogen molecules adsorbed on the filter molecules 160 are cleaned and then discharged from the first air holes 121 of the top cover 120, so that recycling is realized, the utilization rate is improved, and compared with the method that a single air outlet is adopted and a three-way structure is adopted for shunting, the structure that two second air holes 140 are directly arranged in the bottom cover 130 has airflow stability, the structure is simplified, the space occupation of the tank body 110 is reduced, and the molecular sieve tank is favorably developed towards the direction of being smaller and more convenient to use; in addition, the structure that one end of the tank body 110 is closed and the other end of the tank body is detachable can bear certain internal and external pressure, and air cannot leak from the inside of the tank body, so that the structural stability and the operation stability can be improved on the whole.

After the bottom cover 130 is assembled at the bottom of the tank body 110, a whole circumference at the outer edge of the tank body 110 and a circumference at the end face edge of the bottom cover 130 can be welded to form a welding seam, the welding seam is formed by integrally welding the tank body 110 and the bottom cover 130 conveniently to form a closed end, so that the welding quality can be guaranteed, the welding is full and seamless, welding fusion is good, internal and external pressure can be borne to a certain degree, air cannot leak out from the inside, splashing water can be prevented at the external welding position, one end of the molecular sieve tank is completely welded and sealed, the other end of the molecular sieve tank can be detachably connected with the top cover 120 to form a seal, and therefore, the internal filter molecules 160 are convenient to assemble, disassemble and replace.

It should be noted that, the tank body 110 is made of an aluminum alloy material, and after processing, the inside and outside of the tank body 110 need to be subjected to surface treatment of anodic oxidation, so that the inner surface of the tank body 110 is relatively smooth, and the smooth surface of the tank body 110 can ensure smooth air passage; the top cover 120 is of a thin plate structure, so that the occupied space can be reduced, and the first air holes 121 formed in the top cover can be stepped holes, so that the quick plugging and unplugging of the air pipe connector are facilitated.

As an alternative embodiment, the bottom cover 130 includes a cover 131 connected to the can 110, a protrusion 132 is disposed on a top surface of the cover 131, the protrusion 132 and an inner wall of the cover 131 define an air flow channel 150, a flow dividing seat 133 is disposed at a bottom of the cover 131, two second air holes 140 are opened in the flow dividing seat 133, and both the two second air holes 140 are communicated with the air flow channel 150.

In this embodiment, the bottom cover 130 is a concave structure, the height of the protrusion portion 132 is equal to the height of the edge protrusion of the bottom cover 130, and when the gas is exhausted from the bottom cover 130, the gas firstly enters the gas flow channel 150 to perform buffering, pressure reduction and speed reduction, and then is exhausted from the second gas hole 140, so that the problem that the gas directly flows out due to overlarge gas pressure and flow velocity to cause poor gas flow stability is avoided, and the gas flow stability is further improved.

As an alternative embodiment, the boss 132 includes at least two arcuate projections with a space therebetween.

In this embodiment, the number of the arc-shaped protrusions is 2 to 4, and the plurality of arc-shaped protrusions surround a circle with gaps, so that the stroke of the airflow passing through the airflow channel 150 is prolonged, and the buffering effect on the airflow is further improved.

As an alternative embodiment, a first filter 170 and a second filter 180 for compressing the filter molecules 160 are disposed in the tank 110; the top cover 120 compresses the first filter sheet 170 and the boss 132 compresses the second filter sheet 180.

In this embodiment, the first filter sheet 170 and the second filter sheet 180 can press the filter molecules 160 in the middle to prevent the filter molecules 160 from falling off, and the filter molecules 160 can adsorb nitrogen, so that more oxygen passes through the tank 110, and the filter molecules 160 can discharge the adsorbed nitrogen to the air when the pressure is reduced, and re-adsorb nitrogen to produce oxygen when the pressure is reduced, and the filter molecules 160 are not consumed in this oxygen generation cycle.

It should be noted that the filter molecules 160 may be zeolite molecular sieves, the first filter sheet 170 and the second filter sheet 180 have relatively high densities, and can only pass through air to filter air impurities, where the second filter sheet 180 is disposed on the top of the protruding portion 132, and the protruding portion 132 can also prevent the second filter sheet 180 from directly attaching to the inner concave surface of the cover 131 and being pressed by a plane to form a sealing structure, so as to ensure the connectivity of the airflow channel 150 and improve the airflow stability when the bottom cover 130 gives out air, and the arrangement of the first filter sheet 170 and the second filter sheet 180 also plays a role in flattening the filter molecules 160, and the filter molecules can move smoothly to realize compaction when being compacted; meanwhile, the first filter sheet 170 and the second filter sheet 180 are soft materials, so that the filter molecules 160 are not easily crushed due to excessive pressure.

As an alternative embodiment, the gap between the first filter sheet 170 and the inner wall of the tank 110 and the gap between the second filter sheet 180 and the inner wall of the tank 110 are smaller than the particle size of the filter molecules 160.

In this embodiment, since the gaps between the first filter sheet 170 and the second filter sheet 180 and the inner wall are smaller than the particle size of the filter molecules 160, air and oxygen can pass through the gaps, but the filter molecules 160 are prevented from passing through the gaps, and meanwhile, the first filter sheet 170 and the second filter sheet 180 can also block the filter molecules from leaking under the condition of sliding, thereby ensuring the sealing property.

As an optional implementation manner, the inner wall of the bottom of the can 110 is provided with a positioning step 111, and the positioning step 111 is used for matching with the positioning cover 131, so that the bottom surface of the cover 131 is flush with the bottom surface of the can 110.

In this embodiment, the bottom of the can body 110 is a circular through hole, the positioning step 111 is a circle of circular positioning, the cover 131 of the bottom cover 130 is partially assembled to the positioning step 111 until one end surface of the cover 131 coincides with the plane of the positioning step 111, the positioning step 111 ensures the position of the bottom cover 130, the bottom cover does not slide towards the inside of the molecular sieve can, the positioning assembly is facilitated, and the whole assembled can is elegant and beautiful.

As an optional implementation manner, a circle of sealing groove 122 is formed in the outer side wall of the top cover 120, a sealing ring 190 (an O-ring may be used) contacting the inner wall of the tank 110 is sleeved in the sealing groove 122, a circle of annular groove 123 is formed in the bottom of the top cover 120, a compression spring 210 is arranged in the annular groove 123, and the compression spring 210 contacts the top surface of the first filter 170.

In this embodiment, the lower end of the compression spring 210 can press the first filter 170, the upper end of the compression spring supports against the top cover 120, the outer diameter of the annular groove 123 matches with the outer diameter of the compression spring 210 consistently, the sealing ring 190 is sleeved in the sealing groove 122 of the top cover 120, then the sealing ring 190 and the top cover 120 are pressed down together from the open end of the top of the tank 110, and pressed into the tank 110 until the bottom surface of the top cover 120 contacts with the first filter 170, and when the top cover 120 is pressed down, the sealing ring 190 and the outer plane of the top cover 120 need to be in contact with each other evenly and smoothly with the help of a tool, and the sealing ring 190 is prevented from being damaged when pressed down, so that the sealing ring 190 cannot achieve a sealing effect, the assembly operation is rapid and convenient, a good sealing effect can be formed, and the disassembly is also convenient.

As an optional embodiment, the inner wall of the top of the can body 110 is provided with a limiting groove 112, a clamp spring 220 is arranged in the limiting groove 112, the clamp spring 220 contacts with the top surface of the top cover 120, and the specific size of the limiting groove 112 should match with the external size of the clamp spring 220.

In this embodiment, the clamp spring 220 further increases the pressing force on the top cover 120, so as to ensure the sealing performance after assembly, and in specific operation, the clamp spring 220 is inserted into the limiting groove 112 by using a pair of pliers to abut against the top cover 120.

As an alternative embodiment, the sealing ring 190 is fitted to the can 110 by interference fit.

In the present embodiment, after the assembly, an interference of 0.5mm may be provided between the sealing ring 190 and the inner wall of the tank 110, and the pressure-equalizing movement may also be performed while ensuring the sealing, and the pressure-equalizing movement may protect the internal filtering molecules 160 from overpressure, and may also adjust the moving speed during the moving process by the interference.

It should be noted that, the sealing of the open end of the tank body 110 has certain dimensional requirements, the diameter of the inner wall of the tank body 110 is 36mm, the inner diameter of the sealing groove 122 on the side surface of the top cover 120 is 30mm, the groove width is 4mm, the inner diameter of the ring of the sealing ring 190 is 30mm, the diameter of the cross section of the sealing ring 190 is 3.5mm, in the process of assembling the sealing ring 190 and the top cover 120 into the tank body 110, the diameter of the cross section of the sealing ring 190 and the inner diameter of the tank body 110 have certain volume interference, i.e. interference fit, after the assembly is in place, the sealing ring 190 is made of silica gel, the shore hardness is 50 degrees, the material is soft, and has certain elasticity; the sealing ring 190 maintains a certain elastic force by the inner diameter of the sealing ring 190 and the side of the top cap 120, thereby achieving a sealing effect.

Example 2

This example provides an oxygen generator comprising a molecular sieve tank as described in example 1.

In this embodiment, the oxygen generator is generally configured with two molecular sieve tanks, and the pressure swing adsorption principle is adopted to separate nitrogen gas to produce and discharge high-concentration oxygen. The portable multifunctional waist belt is convenient to carry and use, and can be carried on the body or worn on the waist in a satchel manner when used in the situations of field travel, high altitude and the like, so that the use is convenient;

the two molecular sieve tanks can be communicated through one of the second air holes 140 on the bottom cover 130, so that on one hand, the air pressure in the tanks can be kept balanced, and on the other hand, when reverse cleaning is performed, part of oxygen generated by one of the molecular sieve tanks is input into the other molecular sieve tank to clean nitrogen on the filter molecules 160, so that the adsorption quantity of the filter molecules 160 on the nitrogen molecules is recovered, the cycle application is improved, and the oxygen-nitrogen separation efficiency is improved; and the two molecular sieve tanks are alternated to form the processes of oxygen generation and cleaning.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.

Claims (10)

1. A molecular sieve tank, comprising:

a tank body;

the top cover is detachably connected to the top of the tank body, and a first air hole communicated with the tank body is formed in the top cover;

the bottom cover is fixedly connected to the bottom of the tank body, and two second air holes which are communicated with the tank body are formed in the bottom cover;

the tank body, the top cover and the bottom cover are enclosed to form a filter cavity with sealing performance, and filter molecules are filled in the filter cavity.

2. The molecular sieve tank of claim 1, wherein the bottom cover comprises a cover body connected to the tank body, a protrusion is disposed on a top surface of the cover body, the protrusion and an inner wall of the cover body define an air flow channel, a flow dividing seat is disposed at a bottom of the cover body, two of the second air holes are opened in the flow dividing seat, and both of the second air holes are communicated with the air flow channel.

3. The molecular sieve tank of claim 2, wherein said raised portion comprises at least two arcuate projections with a space therebetween.

4. The molecular sieve tank of claim 2, wherein said tank has a first filter and a second filter for compressing said filter molecules;

the top cover compresses the first filter sheet, and the bulge compresses the second filter sheet.

5. The molecular sieve tank of claim 4, wherein the gap between the first filter sheet and the inner wall of the tank body and the gap between the second filter sheet and the inner wall of the tank body are smaller than the particle size of the filter molecules.

6. The molecular sieve tank of claim 2, wherein the inner wall of the bottom of the tank body is provided with a positioning step, and the positioning step is used for matching and positioning the cover body, so that the bottom surface of the cover body is flush with the bottom surface of the tank body.

7. The molecular sieve tank of claim 5, wherein the top cover has a sealing groove on its outer side wall, the sealing groove is sleeved with a sealing ring contacting with the inner wall of the tank, the top cover has a ring-shaped groove on its bottom, and the ring-shaped groove is provided with a compression spring contacting with the top surface of the first filter sheet.

8. The molecular sieve tank of claim 7, wherein a limiting groove is formed in the inner wall of the top of the tank body, a clamp spring is arranged in the limiting groove, and the clamp spring is in contact with the top surface of the top cover.

9. A molecular sieve tank as claimed in claim 7 or 8, wherein the sealing ring is fitted to the tank body by interference fit.

10. An oxygen generator comprising a molecular sieve tank as claimed in any one of claims 1 to 9.

Images