CN214367929U

CN214367929U - Diaphragm air guide valve transversely installed

Info

Publication number: CN214367929U
Application number: CN202120532526.XU
Authority: CN
Inventors: 邱林; 冯勇华; 寇艳青
Original assignee: Hubei Yjt Technology Co ltd
Current assignee: Hubei Yjt Technology Co ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-10-08
Anticipated expiration: 2031-03-15

Abstract

A transversely-mounted diaphragm air guide valve is provided with a valve body which is hermetically mounted with an upper cover of an adsorption tower through the bottom surface, two sets of air path switching valve structures are arranged in the valve body, the center of each set of switching valve is provided with a valve rod, and the two valve rods are coaxially or parallelly arranged along the length direction of the valve body; the valve rod is respectively and sequentially provided with a sealing gasket vertical to the valve rod, a valve core vertical to the valve rod and a spring sleeved outside the valve rod from the outer sides of the two ends of the valve rod to the center in the length direction, and the inner space of the valve body is sequentially divided into a gasket outer cavity, a gasket inner cavity and an air inlet cavity from the two sides of the length direction to the inside. The utility model discloses transversely set up the valve rod of molecular sieve oxygenerator diaphragm air guide valve for overall structure is compacter, and width direction has vacated the space and can be favorable to further improving the integrated level of oxygenerator. Still set up long-life diaphragm and switched the structure, used the diaphragm to promote the structure and combine unsettled case setting, showing and reduced the case and generate heat and ageing, improved the life of valve by a wide margin.

Description

Diaphragm air guide valve transversely installed

Technical Field

The utility model relates to an oxygenerator field specifically says so a diaphragm air guide valve of horizontal installation.

Background

Along with the increasing market demand on the oxygenerator, the technical requirements of the oxygenerator are higher and higher, and the integration level is also continuously improved. The upper cover of the adsorption tower of the molecular sieve pressure swing adsorption oxygen generator in the prior art adopts a mode that a pair of valve rods are longitudinally arranged in parallel, and along with the requirement of improving the integration level, the structure occupies more space longitudinally, so that the improvement of the integration level of the upper cover of the adsorption tower of the oxygen generator is hindered. The integration level is further improved by the adsorption tower upper cover which is difficult to have more positions due to the fact that the available area is short due to the traditional valve body dispersing arrangement structure, a pressure reducing valve is required to be additionally connected to the oxygen generator in use, pipeline connection is carried out automatically, and the complexity of the use of the people is increased. And the existing mature double-valve parallel structure is difficult to further simplify, so that the arrangement structure is difficult to break and change.

On the other hand, the valve rod of prior art relies on the sealed and reciprocating motion of rubber case and cavity inside wall to realize the switching of passageway, but, because the incessant flow requirement of oxygenerator, intermittent reciprocating motion does not cause the continuous friction of rubber case and cavity inside wall, leads to the case to continuously generate heat, and rubber is ageing fast, has shortened the life of valve body.

Disclosure of Invention

The utility model aims to solve the technical problem that an above-mentioned problem provides a diaphragm air guide valve of horizontal installation, vacates more spatial position for the adsorption tower upper cover to more parts such as integrated air-vent valve, all integrated as an organic whole with each part of oxygenerator, convenience simple to use optimizes the structure simultaneously, reduces the friction of case and generates heat increase of service life.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

diaphragm air guide valve of horizontal installation, be equipped with the valve body through bottom surface and the sealed installation of adsorption tower upper cover, its characterized in that: two sets of gas path switching valve structures are arranged in the valve body, the center of each set of switching valve is provided with a valve rod, and the two valve rods are coaxially or parallelly arranged along the length direction of the valve body;

a sealing gasket vertical to the valve rod, a valve core vertical to the valve rod and a spring sleeved outside the valve rod are respectively and sequentially arranged from the outer sides of the two ends of the valve rod to the center in the length direction, and the inner space of the valve body is inwards and sequentially divided into a gasket outer cavity, a gasket inner cavity and an air inlet cavity from the two sides of the length direction; the bottom surface of the valve body is internally provided with a nitrogen bin port, an oxygen bin port and a main air inlet from two sides in sequence; the two valve rods move coaxially, so that the valve core moves along with the valve rod to switch the oxygen bin opening to be communicated with the nitrogen bin opening through the pad inner cavity, or the oxygen bin opening is communicated with the main air inlet through the air inlet cavity.

Furthermore, the horizontal both ends of valve body are fixed respectively and are equipped with two-position three way's left solenoid valve and right solenoid valve, and left solenoid valve and right solenoid valve make valve opening A communicate with each other with valve opening B or make valve opening A communicate with each other with valve opening C inside the solenoid valve by the control of signal of telecommunication respectively, and wherein valve opening A communicates through the inside independent passageway of valve body with the pad exocoel of homonymy, and valve opening B communicates with the external atmosphere, and valve opening C communicates through the inside independent passageway of valve body with the chamber of admitting air.

Furthermore, the side surface of the valve core is suspended, rubber pads are covered on two end surfaces of the valve core along the axial direction of the valve rod, and the end surface is in sealing contact with the channel port to seal the channel.

Preferably, the inner side of the sealing gasket is fixedly connected with a limiting cover which is perpendicular to the valve rod at the outer end of the valve rod on the same side as the sealing gasket.

Preferably, an elastic bowl is fixedly sleeved outside the valve rod on the same side of the limiting cover on the inner side of the limiting cover, the elastic bowl is arranged in the direction perpendicular to the valve rod, and the outer edge of the elastic bowl is fixed.

Preferably, a rod end frame is attached to the outer side of the elastic bowl, and the outer edge of the rod end frame is pressed on the outer edge of the sealing gasket.

Preferably, an inner cavity cage is arranged on the inner side of the elastic bowl, the inner end face of the inner cavity cage is used as a port of the inner cavity of the gasket to face the valve core, and the outer end of the inner cavity cage is hermetically pressed on the outer edge of the rod end frame.

The utility model discloses create the valve rod of the diaphragm air guide valve of molecular sieve oxygenerator transversely to set up, and to become a part modularization manufacturing alone including a pair of solenoid valve and valve switched systems's control valve, can make inner structure more accurate compact, make the overall structure of adsorption tower upper cover compacter, especially the width direction at the adsorption tower upper cover consequently and vacated the valuable space, can be directly integrated as an organic whole with the relief pressure valve, can further improve the integrated level of oxygenerator and show the complexity that reduces assembly and use. The utility model discloses still set up long-life diaphragm and switched the structure, used diaphragm promotion structure to combine unsettled case setting, the case is with the inside friction that does not produce of valve body, is showing and has reduced the case and generate heat and ageing, has improved the life of valve by a wide margin.

Drawings

Figure 1 is a top view of the external structure of the utility model,

figure 2 is a cross-sectional view a-a of figure 1,

figure 3 is an overall depression axonometric view of the invention,

figure 4 is an overall elevation isometric view of the present invention.

In the figure: 1-valve hole A, 2-valve hole B, 3-valve hole C, 4-left electromagnetic valve, 5-valve cover, 6-sealing gasket, 7-valve core, 8-spring, 9-valve body, 10-right electromagnetic valve, 11-elastic bowl, 12-limiting cover, 13-cushion outer cavity, 14-nitrogen bin opening, 15-oxygen bin opening, 16-main air inlet, 17-screen cylinder, 18-cushion inner cavity, 19-air inlet cavity, 20-valve rod, 21-rod end frame and 22-inner cavity cage.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, and it is to be understood that the described examples are only some of the examples and are not all examples of the present invention. 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.

In the description of the present invention, it should be noted that the terms "center", "left", "right", "vertical", "horizontal", "inner" or "outer" and other positional relationships are used for convenience of description and description, and are used for distinguishing specific names of components, rather than for indicating or implying that the designated device or component must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or may be connected internally to the elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, 3, and 4, the present invention provides an embodiment: the transversely-installed membrane air guide valve is typically applied to double-sieve-cylinder switching of a molecular sieve pressure swing adsorption oxygen generator, the bottom surface of the valve body 9 and an upper cover of an adsorption tower are hermetically installed, and the double-tower air inlet and nitrogen discharge processes are completed through the switching of the arranged air passage channels.

Aiming at the molecular sieve double tower, two sets of gas path switching valve structures are arranged in the valve body 9, so that alternate gas inlet and nitrogen discharge of the two sets of switching valves are realized, a valve rod 20 is arranged at the center of each set of switching valve, the two valve rods 20 are coaxially or parallelly arranged along the length direction of the valve body, as shown in fig. 2, the two valve rods 20 are approximately coaxially arranged, the two corresponding sets of switching valves are arranged around the respective valve rods, all the components of the two sets of switching valves are basically symmetrically arranged relative to the vertical plane of the center, and the two sets of components alternately reciprocate during operation to enable the preparation and output of oxygen to be uninterrupted.

The valve body is characterized in that a sealing gasket 6 perpendicular to the valve rod 20, a valve core 7 perpendicular to the valve rod and a spring 8 sleeved outside the valve rod are sequentially arranged from the outer sides of two ends of the valve rod 20 to the center in the length direction, the inner space of the valve body is sequentially divided into an outer cushion cavity 13, an inner cushion cavity 18 and an air inlet cavity 19 which are independently isolated from each other from the two sides of the valve body inwards in the length direction, and the air inlet cavities 19 of the valve bodies on the two sides are combined into a whole. The spring 8 is a compression spring and is used for buffering the inward impact force of the valve rod, and can also have the function of an extension spring at the same time and play a role in assisting the inward pulling when the valve rod moves inwards. Preferably, for the protection sealed 6 that fills up can not excessively warp under the pressure effect, in the inboard of sealed 6, with the valve rod outer end fixedly connected with spacing cover 12 of sealed 6 homonymy, spacing cover 12 sets up with valve rod 20 is perpendicular, and one side that faces sealed 6 is parallel with sealed 6, and the interval between spacing cover 12 and the sealed 6 of filling up is not more than the stroke of valve rod, has restricted sealed excessive deformation of packing, increase of service life.

As shown in fig. 3, a nitrogen bin port 14, an oxygen bin port 15 and a main air inlet 16 are sequentially arranged on the bottom surface of the valve body 9 from two sides inwards and are respectively communicated with a nitrogen bin of the sieve barrel, an oxygen bin of the sieve barrel and a compressed air outlet, a cushion inner cavity 18 is communicated with the nitrogen bin of the sieve barrel, and an air inlet cavity 19 is communicated with the compressed air outlet.

The two valve rods 20 move coaxially to enable the valve core 7 to move along with the valve core, so that the valve core 7 dynamically switches the communication between the oxygen bin opening 15 and the nitrogen bin opening 14 through the cushion inner cavity 18, or the communication between the oxygen bin opening 15 and the main air inlet 16 through the air inlet cavity 19.

The movement of the valve rod 20 is realized by switching on and transforming air pressure through the switching of the electromagnetic valves, the left electromagnetic valve 4 and the right electromagnetic valve 10 are respectively and fixedly arranged at the two transverse ends of the valve body 9, the left electromagnetic valve 4 and the right electromagnetic valve 10 are two-position three-way electromagnetic valves controlled by electric signals, the electric signals are multivibrator signals sent out periodically, and the pneumatic control valve can be realized by a simple digital logic chip. The left electromagnetic valve 4 and the right electromagnetic valve 10 respectively communicate a valve hole A1 with a valve hole B2 or communicate a valve hole A1 with a valve hole C3 in the two states of 0 and 1 of digital signals, wherein the valve hole A1 is communicated with the same-side cushion outer cavity 13 through an independent channel in the valve body, the valve hole B2 is communicated with the outside atmosphere, and the valve hole C3 is communicated with the air inlet cavity 19 through an independent channel in the valve body.

As shown in fig. 2, the side surface of the valve core 7 is suspended without friction with other parts, sealing is realized by closing two extreme positions and the end surface of the valve core, two end surfaces of the valve core 7 along the axial direction of the valve rod are covered with rubber pads, the end surfaces are in sealing contact with a channel port to seal a channel, and the channel port is a channel port of an air inlet cavity 19 and a channel port of a pad inner cavity 18 on two sides of the valve core. When the valve core moves inwards to be attached to the channel port of the air inlet cavity 19, the oxygen bin port 15 is communicated with the nitrogen bin port 14 through the cushion inner cavity 18; when the valve core moves outwards to be attached to the channel opening of the inner cavity 18 of the inlet pad, the oxygen bin opening 15 is communicated with the main air inlet 16 through the air inlet cavity 19.

An elastic bowl 11 is fixedly sleeved outside the valve rod on the same side of the limiting cover 12 on the inner side of the limiting cover 12, the elastic bowl 11 is arranged in the direction perpendicular to the valve rod 20, and the outer edge of the elastic bowl is fixed. The outer side of the elastic bowl 11 is provided with a rod end frame 21 in a bonding way, and the outer edge of the rod end frame 21 is pressed on the outer edge of the sealing gasket 6. The elastic bowl 11 is combined with the rod end frame 21, and the rigid edge pressing part is combined with the middle part with elasticity, so that on one hand, the rigid edge provides fixation for the sealing gasket 6, on the other hand, the elastic bowl 11 strengthens the stable state of two extreme positions, other transition positions are unstable states, and the stable state position can change the original state only by providing reverse pressure kinetic energy and enters a new stable state. Therefore, when the electromagnetic valve connects the cushion outer cavity with the air inlet cavity 19 with the same pressure as compressed air, the elastic bowl can push the valve rod to move inwards from the outer end position under the impact of suddenly increased pressure; or when the solenoid valve connects the outer cushion chamber to the atmosphere, the pressure in the air inlet chamber 19 pushes the valve rod outwards and stabilizes in two extreme states.

An inner cavity cage 22 is arranged on the inner side of the elastic bowl 11, the inner end face of the inner cavity cage 22 is used as a port of the cushion inner cavity 18 to face the valve core 7, and the outer end is hermetically pressed on the outer edge of the rod end frame 21.

The combination of the above structure shows that the utility model is a membrane air guide valve with a brand new structure. When the valve rod is in the position state as shown in fig. 2, the valve hole a1 and the valve hole C3 of the left electromagnetic valve 4 are communicated, compressed air enters from the main air inlet 16, and as indicated by the path route of the air path in the figure, the compressed air is communicated to the outer side of the left sealing gasket 6 through the valve hole a1 and the valve hole C3 of the left electromagnetic valve 4, at the moment, the left sealing gasket 6 is impacted by pressure to push the left valve rod to move right, the left valve core 7 is sealed at the port of the air inlet cavity 19, and the left oxygen bin port is communicated with the left nitrogen bin port; meanwhile, the right valve core seals the port 18 of the right cushion inner cavity, the main air inlet 16 is communicated with the right oxygen bin port 15, compressed air enters the right oxygen bin and then enters the molecular sieve drum, and after the compressed air comes out, the compressed air enters the left oxygen bin and then enters the left nitrogen discharge bin, and nitrogen in the left nitrogen discharge bin is discharged. Meanwhile, the valve hole A1 of the right electromagnetic valve 10 is communicated with the valve hole B2 of the right electromagnetic valve 10, the right sealing gasket moves the right valve rod to the right under the pressure difference of two sides, and gas in the right gasket outer cavity 13 is discharged. After time delay, the control signals of the left electromagnetic valve 4 and the right electromagnetic valve 10 are simultaneously turned, the process of the left valve is repeated by the right valve, the process of the right valve is repeated by the left valve, and the double valves move in turn to continuously generate oxygen.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made to the present invention without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a diaphragm air guide valve of horizontal installation is equipped with valve body (9) through bottom surface and the sealed installation of adsorption tower upper cover, its characterized in that: two sets of gas path switching valve structures are arranged in the valve body (9), the center of each set of switching valve is provided with a valve rod (20), and the two valve rods (20) are coaxially or parallelly arranged along the length direction of the valve body;

a sealing gasket (6) vertical to the valve rod, a valve core (7) vertical to the valve rod and a spring (8) sleeved outside the valve rod are sequentially arranged from the outer sides of the two ends of the valve rod (20) to the center in the length direction respectively, and the inner space of the valve body is inwards and sequentially divided into a gasket outer cavity (13), a gasket inner cavity (18) and an air inlet cavity (19) from the two sides of the length direction; the bottom surface of the valve body (9) is internally provided with a nitrogen bin port (14), an oxygen bin port (15) and a main air inlet (16) from two sides in sequence; the two valve rods (20) move coaxially, so that the valve core (7) moves along with the valve rod to switch the oxygen bin port (15) to be communicated with the nitrogen bin port (14) through the cushion inner cavity (18), or the oxygen bin port (15) is communicated with the main air inlet (16) through the air inlet cavity (19).

2. The transversely mounted diaphragm air pilot valve of claim 1, wherein: the horizontal both ends of valve body (9) are fixed respectively and are equipped with two-position three-way left solenoid valve (4) and right solenoid valve (10), and left solenoid valve (4) and right solenoid valve (10) make valve opening A (1) and valve opening B (2) communicate with each other or make valve opening A (1) and valve opening C (3) communicate with each other by signal control inside the solenoid valve respectively, and wherein valve opening A (1) and the pad exocoel (13) of homonymy communicate through the inside independent passageway of valve body, and valve opening B (2) communicate with external atmosphere, and valve opening C (3) and admit air chamber (19) communicate through the inside independent passageway of valve body.

3. The transversely mounted diaphragm air pilot valve of claim 1, wherein: the side surface of the valve core (7) is suspended, rubber pads are covered on two end surfaces of the valve core (7) along the axial direction of the valve rod, and the end surfaces are in sealing contact with the channel port to seal the channel.

4. The transversely mounted diaphragm air pilot valve of claim 1, wherein: and a limiting cover (12) which is vertical to the valve rod (20) is fixedly connected to the outer end of the valve rod on the same side of the sealing gasket (6) on the inner side of the sealing gasket (6).

5. The transversely mounted diaphragm air pilot valve of claim 4, wherein: an elastic bowl (11) is fixedly sleeved outside the valve rod on the same side of the limiting cover (12) on the inner side of the limiting cover (12), the elastic bowl (11) is arranged in the direction perpendicular to the valve rod (20), and the outer edge of the elastic bowl is fixed.

6. The transversely mounted diaphragm air pilot valve of claim 5, wherein: the outer side of the elastic bowl (11) is provided with a rod end frame (21) in a bonding way, and the outer edge of the rod end frame (21) is pressed on the outer edge of the sealing gasket (6).

7. The transversely mounted diaphragm air pilot valve of claim 6, wherein: an inner cavity cage (22) is arranged on the inner side of the elastic bowl (11), the inner end face of the inner cavity cage (22) is used as a port of the cushion inner cavity (18) to face the valve core (7), and the outer end is hermetically pressed on the outer edge of the rod end frame (21).