CN211274124U

CN211274124U - Molecular sieve tank structure for oxygen machine

Info

Publication number: CN211274124U
Application number: CN201922165580.0U
Authority: CN
Inventors: 王长龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-08-18
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses a molecular sieve jar structure for oxygen machine, including a jar body, center tube, lower sieve, upper screen plate, spring, lower extreme cover and upper end cover, the opening part covers lower extreme cover and upper end cover respectively around the jar body, is fixed with lower sieve and upper screen plate on the inboard jar internal wall of lower extreme cover and upper end cover respectively, forms the chamber of admitting air between lower sieve and the lower extreme cover, forms the absorption chamber between lower sieve and the upper screen plate, goes up and forms the air cavity between sieve and the upper end cover. This a molecular sieve jar structure for oxygen machine realizes the quick replacement design of molecular sieve jar to the oxygen machine easily, improves molecular sieve working life, realizes the air flue easily and integrates structural design, has improved assembly process and later stage maintainability, and the design of chamber structure of admitting air simultaneously has improved the working life of molecular sieve, can carry out the free regulation to this molecular sieve jar interface and fixed mode according to actual application environment and concrete product air flue interface structure.

Description

Molecular sieve tank structure for oxygen machine

Technical Field

The utility model relates to an oxygen machine technical field specifically is a molecular sieve jar structure for oxygen machine.

Background

The molecular sieve type oxygen machine is equipment for extracting oxygen from air based on Pressure Swing Adsorption (PSA) technology. The molecular sieve physical adsorption and desorption technology is utilized to fill the molecular sieve in the oxygen machine molecular sieve tank, nitrogen in the air can be adsorbed during pressurization, unadsorbed oxygen is collected, and the oxygen is purified to form high-purity oxygen. The specific working process is that the outside air enters an air compressor after being filtered and then enters the molecular sieve tank through the switching valve. In the molecular sieve tank, nitrogen is adsorbed by the molecular sieve, oxygen is accumulated at the top of the adsorption tower and then enters the oxygen storage tank, and then the finished gas is filtered by a pressure stabilizing valve and a dust removal and sterilization filter to obtain qualified medical oxygen. The oxygen machine is generally provided with two molecular sieve tanks, and the two molecular sieve tanks are alternately pressurized and exhausted through a switching valve, so that the two molecular sieve tanks work circularly, and the oxygen machine can continuously supply oxygen.

The molecular sieve tank is one of the core components in the oxygen machine, and the structure of the traditional molecular sieve tank is relatively simple at present, and the molecular sieve tank is the form adopted by most oxygen machine products. The traditional molecular sieve tank structure in the current market mainly comprises a tank body, an upper sieve plate, a lower sieve plate, a spring, an upper end cover and a lower end cover, wherein a molecular sieve is filled between the upper sieve plate and the lower sieve plate, and the upper end cover and the lower end cover are provided with joints for connecting air inlet and air outlet.

Along with the development of technology and market demand, the oxygen machine tends to be miniaturized more and more, the market demand of portable oxygen machine is bigger and bigger, and because of the nature and the technical limitation of molecular sieve, the molecular sieve working life of small-size portable oxygen machine is far less than the molecular sieve working life of traditional large-scale oxygen machine, and this requires that the whole set of molecular sieve jar is changed after the molecular sieve reaches working life. Because the limitation of traditional molecular sieve jar structure, it is more loaded down with trivial details relatively when changing the molecular sieve jar, need open the casing, pull out the pipeline and change it, only professional after-sale maintenance personal can operate. If the operation can be carried out by a common user, the process of equipment maintenance operation is greatly simplified, the maintenance time and cost of the equipment are saved, and the method has a positive effect on both the user and a manufacturer.

In addition, for the structural form of the traditional molecular sieve tank, airflow directly impacts the molecular sieve after entering the molecular sieve through the air inlet, and the process is frequently and repeatedly carried out, so that the working life of the molecular sieve is influenced, the influence is particularly obvious in the molecular sieve tank of the portable oxygen machine, the working life of the molecular sieve is shortened, and the problem needs to be solved by designing a simple and effective structure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a molecular sieve jar structure for oxygen machine, it is compact to have the inside overall arrangement of structure, and self dismantlement repacking is convenient, realizes the quick replacement design of molecular sieve jar to the oxygen machine easily, improves molecular sieve working life, realizes the air flue easily and integrates structural design's advantage, has solved the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: a molecular sieve tank structure for an oxygen machine comprises a tank body, a central pipe, a lower sieve plate, an upper sieve plate, a spring, a lower end cover and an upper end cover, wherein the front opening and the rear opening of the tank body are respectively covered with the lower end cover and the upper end cover;

the central pipe penetrates through the circle centers of the lower sieve plate and the upper sieve plate, one end of the central pipe extends into the air inlet cavity, and the other end of the central pipe penetrates through the upper end cover and extends to the outside of the tank body;

the adsorption cavity between the lower sieve plate and the upper sieve plate is filled with a molecular sieve which is penetrated through by a central pipe, the side wall of the lower sieve plate is also superposed with filter paper and a filter paper pressing plate which are penetrated through by the central pipe, and the side wall of the upper sieve plate is sleeved with filter cotton which is penetrated through by the central pipe;

a plurality of equally spaced air outlets are processed on the upper end cover, the upper end cover is connected with the central tube through a locking nut, the air inlet and the air outlet are located on the same side of the tank body, and the air outlet is communicated with the adsorption cavity.

Preferably, a filtering material is arranged between the lower sieve plate and the molecular sieve and between the upper sieve plate and the molecular sieve, and the filtering pore diameter is smaller than

Preferably, the air inlet cavity, the adsorption cavity and the air outlet cavity are communicated in sequence.

Preferably, the distance kept between the lower sieve plate and the lower end cover is more than 3mm and less than 1/4 of the inner diameter of the tank body 1.

Preferably, the distance between the upper sieve plate and the lower sieve plate is set between 2 times and 5 times of the inner diameter of the tank body.

Preferably, a spring in a compressed state is arranged between the upper sieve plate and the upper end cover or between the lower sieve plate and the lower end cover.

Compared with the prior art, the beneficial effects of the utility model are as follows:

this a molecular sieve jar structure for oxygen machine, the inside overall arrangement of structure is compact, self dismantles and repacks the convenience, the quick replacement design of molecular sieve jar is realized easily to the oxygen machine, improve molecular sieve working life, realize the air flue easily and integrate structural design, assembly process and later stage maintainability have been improved, the design of chamber structure of admitting air simultaneously has improved the working life of molecular sieve, can freely adjust this molecular sieve jar interface and fixed mode according to actual application environment and concrete product air flue interface structure, realize the modularization easily, integrate and inherit the design, the design of especially portable oxygen machine class product to the oxygen machine product has very big impetus.

Drawings

FIG. 1 is a cross-sectional view of one embodiment of a molecular sieve tank structure according to the present invention;

FIG. 2 is an external view of an embodiment of the molecular sieve tank structure of the present invention;

FIG. 3 is a partial detailed cross-sectional view of one embodiment of the molecular sieve tank structure of the present invention;

FIG. 4 is an exploded view of components of an embodiment of the molecular sieve tank structure of the present invention;

FIG. 5 is a cross-sectional view of an embodiment of the molecular sieve tank structure of the present invention in which the connection between the upper and lower end caps and the tank body is a threaded structure;

FIG. 6 is a cross-sectional view of an embodiment of the molecular sieve tank structure of the present invention in which the connection between the upper and lower end caps and the tank body is achieved by screw fastening;

FIG. 7 is a cross-sectional view of an embodiment of a welded structure in the connection manner between the upper and lower end caps and the tank body of the molecular sieve tank structure of the present invention;

fig. 8 is a cross-sectional view of an embodiment of the molecular sieve tank structure for changing the direction of inlet air and outlet air.

In the figure: 1. a tank body; 2. a central tube; 3. a lower sieve plate; 4. an upper sieve plate; 5. a spring; 6. a lower end cover; 7. an upper end cover; 8. a molecular sieve; 201. an air inlet; 701. an air outlet; 702. locking the nut; 301. filtering paper; 302. pressing a filter paper plate; 401. filtering cotton; 100. an air inlet cavity; 200. an adsorption chamber; 300. and an air outlet cavity.

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 work belong to the protection scope of the present invention.

Referring to fig. 1, a molecular sieve tank structure for an oxygen machine includes a tank body 1, a central pipe 2, a lower sieve plate 3, an upper sieve plate 4, a spring 5, a lower end cover 6 and an upper end cover 7, wherein the front and rear openings of the tank body 1 are respectively covered with the lower end cover 6 and the upper end cover 7.

Referring to fig. 2, a lower sieve plate 3 and an upper sieve plate 4 are respectively fixed on the inner wall of the tank 1 at the inner sides of the lower end cover 6 and the upper end cover 7, an air inlet cavity 100 is formed between the lower sieve plate 3 and the lower end cover 6, an adsorption cavity 200 is formed between the lower sieve plate 3 and the upper sieve plate 4, and an air outlet cavity 300 is formed between the upper sieve plate 4 and the upper end cover 7; the distance between the upper sieve plate 4 and the lower sieve plate 3 is set between 2 times and 5 times of the inner diameter of the tank body 1, in order to better exert the performance of the molecular sieve 8, the central tube 2 penetrates through the circle centers of the lower sieve plate 3 and the upper sieve plate 4, one end of the central tube 2 extends into the air inlet cavity 100, and the other end of the central tube 2 penetrates through the upper end cover 7 and extends to the outside of the tank body 1.

Referring to fig. 3, an adsorption cavity 200 between a lower sieve plate 3 and an upper sieve plate 4 is filled with a molecular sieve 8, the molecular sieve 8 is penetrated through by a central tube 2, filter paper 301 and a filter paper pressing plate 302 penetrated through by the central tube 2 are further superposed on the side wall of the lower sieve plate 3, a plurality of uniform small holes are arranged on the filter paper pressing plate 302, filter cotton 401 penetrated through by the central tube 2 is sleeved on the side wall of the upper sieve plate 4, the filter cotton 401 is of a microporous structure, and is extruded between the upper sieve plate 4 and a tank body 1 after being assembled, the central tube 2 and the lower sieve plate 3 are fixed in a threaded connection manner, meanwhile, the filter paper 301 and the filter paper pressing plate 302 are pressed and fixed, the lower sieve plate 3 and the lower end cover 6 are fixed in a threaded connection mode, a certain amount of thread loosening glue is coated at the thread during assembly, filter materials are arranged between the lower sieve plate 3 and the molecular sieve 8 and between the upper sieve plate 4 and the molecular sieve 8, and the filter pore diameter is smaller than that.

Play and let the air current smoothly evenly pass through and block 8 granules of molecular sieve and pass the sieve, process a plurality of equidistant gas outlets 701 on the upper end cover 7, be connected through lock nut 702 between upper end cover 7 and the center tube 2, air inlet 201 and gas outlet 701 are located jar one side of the body, gas outlet 701 is linked together with absorption chamber 200, gas outlet 701 is located upper end cover 7, communicate with play gas chamber 300, finished product oxygen is exported from this gas outlet 701, the size and the quantity of gas outlet 701 are decided according to the demand of different model configurations, the quantity is 1 at least.

The air inlet cavity 100, the adsorption cavity 200 and the air outlet cavity 300 are sequentially communicated, the distance between the lower sieve plate 3 and the lower end cover 6 is larger than 3mm and smaller than 1/4 of the inner diameter of the tank body 1, the air inlet cavity 100 serves as a buffer cavity for air inlet and plays a role of dispersing air flow, after the air flow enters the air inlet cavity 100 through the central pipe 2, kinetic energy of the air flow is weakened through blocking of the inner wall of the lower end cover 6, the air flow is dispersed, therefore, the molecular sieve 8 uniformly flows into the molecular sieve 8, the molecular sieve 8 is prevented from being frequently and repeatedly impacted by the air flow rapidly, and the service life of the molecular sieve 8 is prolonged. It should set up suitable distance to go up between sieve 3 and the lower end cover 6 down, and the distance of undersize can make admit air and produce too big resistance to thereby it influences adsorption efficiency to receive great loss to admit air pressure, and too big distance can make the chamber 100 volume of admitting air too big, can not make nitrogen gas thoroughly arrange when the system exhausts, influences the quality of finished product gas.

Referring to fig. 4, a spring 5 in a compressed state is arranged between an upper sieve plate 4 and an upper end cover 7 or between a lower sieve plate 3 and a lower end cover 6, the specific placement position is determined according to the structure and the assembly process, the spring 5 is in a compressed state, a molecular sieve 8 is always kept in a compressed state through spring force, the loosening caused by repeated impact of airflow is avoided, and a limit structure is arranged on the end cover or the sieve plate to ensure that the spring 5 and the sieve plate keep the same axis during installation so as to ensure that the stress of the sieve plate is uniformly balanced.

Referring to fig. 5-7, the cross-sectional view of another embodiment of the connection mode between the end cap and the tank body in the molecular sieve tank structure of the present invention, in these embodiments, the connection mode between the upper end cap 7 and the lower end cap 6 and the tank body 1 can be threaded or additionally added with a screw connection fixing or welding connection mode, and at this time, the central tube 2 only plays a role of air passage guiding, and the locking nut 702 may not be needed.

Referring to fig. 8, the inlet and outlet directions of the molecular sieve tank structure can be interchanged, and the inlet 201 and outlet 701 and the inlet chamber 100 and outlet chamber 300 in the embodiments of fig. 2 and 3 are correspondingly exchanged.

In summary, the following steps: this a molecular sieve jar structure for oxygen machine, the inside overall arrangement of structure is compact, self dismantles and repacks the convenience, the quick replacement design of molecular sieve jar is realized easily to the oxygen machine, improve 8 work life of molecular sieve, realize the air flue easily and integrate structural design, assembly process and later stage maintainability have been improved, the design of the chamber 100 structures of admitting air simultaneously has improved 8 work life of molecular sieve, can freely adjust this molecular sieve jar interface and fixed mode according to actual application environment and concrete product air flue interface structure, realize the modularization easily, integrate and inherit the nature design, the design of especially portable oxygen machine class product to the oxygen machine product has very big impetus.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a molecular sieve jar structure for oxygen machine, includes jar body (1), center tube (2), lower sieve board (3), upper screen plate (4), spring (5), lower end cover (6) and upper end cover (7), its characterized in that: a lower end cover (6) and an upper end cover (7) are respectively covered at the front opening and the rear opening of the tank body (1), a lower sieve plate (3) and an upper sieve plate (4) are respectively fixed on the inner wall of the tank body (1) at the inner sides of the lower end cover (6) and the upper end cover (7), an air inlet cavity (100) is formed between the lower sieve plate (3) and the lower end cover (6), an adsorption cavity (200) is formed between the lower sieve plate (3) and the upper sieve plate (4), and an air outlet cavity (300) is formed between the upper sieve plate (4) and the upper end cover (7);

the central pipe (2) penetrates through the circle centers of the lower sieve plate (3) and the upper sieve plate (4), one end of the central pipe (2) extends into the air inlet cavity (100), and the other end of the central pipe (2) penetrates through the upper end cover (7) and extends to the outside of the tank body (1);

molecular sieves (8) are filled in the adsorption cavity (200) between the lower sieve plate (3) and the upper sieve plate (4), the molecular sieves (8) are penetrated through by the central pipe (2), filter paper (301) and a filter paper pressing plate (302) which are penetrated through by the central pipe (2) are also superposed on the side wall of the lower sieve plate (3), and filter cotton (401) which is penetrated through by the central pipe (2) is sleeved on the side wall of the upper sieve plate (4);

a plurality of air outlets (701) which are equidistant are processed on the upper end cover (7), the upper end cover (7) is connected with the central pipe (2) through a locking nut (702), the air inlet (201) and the air outlet (701) are located on the same side of the tank body, and the air outlet (701) is communicated with the adsorption cavity (200).

2. The molecular sieve tank structure for oxygen machine of claim 1, characterized in that, there are filtering materials between the lower sieve plate (3) and the molecular sieve (8) and between the upper sieve plate (4) and the molecular sieve (8), and the filtering pore diameter is less than 0.2 mm.

3. The molecular sieve tank structure for the oxygen machine as claimed in claim 1, wherein the gas inlet chamber (100), the adsorption chamber (200) and the gas outlet chamber (300) are communicated in sequence.

4. A molecular sieve tank structure for oxygen machine according to claim 1, characterized in that the distance kept between the lower sieve plate (3) and the lower end cover (6) is more than 3mm and less than 1/4 of the inner diameter of the tank body (1).

5. A molecular sieve tank structure for oxygen machine according to claim 1, characterized in that the distance between the upper sieve plate (4) and the lower sieve plate (3) is set between 2 times and 5 times of the inner diameter of the tank body (1).

6. The molecular sieve tank structure for oxygen machine of claim 1, characterized in that a spring (5) is arranged between the upper sieve plate (4) and the upper end cover (7) or between the lower sieve plate (3) and the lower end cover (6) in a compressed state.