CN220850844U - Pneumatic reversing valve of oxygenerator - Google Patents
Pneumatic reversing valve of oxygenerator Download PDFInfo
- Publication number
- CN220850844U CN220850844U CN202322305858.6U CN202322305858U CN220850844U CN 220850844 U CN220850844 U CN 220850844U CN 202322305858 U CN202322305858 U CN 202322305858U CN 220850844 U CN220850844 U CN 220850844U
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- valve
- lower shell
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- 239000002808 molecular sieve Substances 0.000 claims abstract description 46
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims description 18
- 238000009423 ventilation Methods 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000020347 spindle assembly Effects 0.000 description 1
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model discloses a pneumatic reversing valve of an oxygenerator, which is mainly technically characterized in that: after the upper cover, the upper shell, the lower shell and the valve seat are connected, a valve cavity is formed in the upper cover, the upper shell, the lower shell and the valve seat, and the mandrel assembly is arranged in the valve cavity; one side of the upper shell is provided with an exhaust interface, the other side of the upper shell is provided with a molecular sieve interface, the exhaust interface and the molecular sieve interface of the shell are communicated with the inner cavity of the upper shell, and the exhaust interface of the upper shell is positioned above the molecular sieve interface of the upper shell; the high-pressure air inlet port on one side of the lower shell is positioned above the air outlet port on one side of the lower shell and is offset to the right side relative to the air outlet port on one side of the lower shell; the exhaust interface and the high-pressure air inlet interface of the lower shell are communicated with the inner cavity of the lower shell; the exhaust interface of the lower shell is positioned below the molecular sieve interface of the lower shell. The beneficial effects are that: the access actions of the four interfaces can be completed simultaneously. The volume of the utility model is reduced, and the installation space is saved; the working efficiency is improved and the production cost is saved.
Description
Technical Field
The utility model relates to a reversing valve, in particular to a pneumatic reversing valve of an oxygenerator.
Background
The existing oxygenerator pneumatic reversing valve realizes that gas is pressurized and fed to two molecular sieve tanks through a molecular sieve gas path interface through alternately powering on and powering off the first pilot valve and the second pilot valve so as to ensure the working efficiency of extracting oxygen. However, the valve structure adopts the pilot valve, the price of the pilot valve is relatively high, the production cost of the pilot valve is increased, and the mass production is not facilitated.
The Chinese patent with the publication number of CN212804497U discloses a novel pilot pneumatic reversing valve for a household oxygenerator, which adopts two coil pilot head assemblies to replace pilot valves and connects the coil pilot head assemblies with pilot boards respectively, thereby realizing cost reduction and mass production. However, this design concept is that each coil lead assembly controls a cavity on one valve body, that is, two cavities on one valve.
The high-pressure gas is introduced and discharged through the power-off of one coil leading head assembly and the power-on of the other coil leading head assembly, so that the nitrogen and the oxygen in the molecular sieve tank are extracted and discharged.
However, the structure has the defects that the valve body is large in volume, the valve core assembly in the cavity alternately works with high noise, and the structure still has an optimized space so as to achieve the purpose of reducing the cost.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art and provide the pneumatic reversing valve of the oxygen generator.
In order to overcome the technical problems, the utility model adopts the following technical scheme:
Including the disk seat, with coil leading head subassembly that the disk seat below is connected, set up the diaphragm of disk seat top, with the lower casing that the disk seat is connected, with the last casing that the lower casing is connected, with the upper cover that the last casing is connected, and dabber subassembly, the edge pressfitting of diaphragm is between disk seat and lower casing, coil leading head subassembly is connected with the disk seat below after, forms a ventilation chamber between its two, its characterized in that:
after the upper cover, the upper shell, the lower shell and the valve seat are connected, a valve cavity is formed in the upper cover, the upper shell, the lower shell and the valve seat, and the mandrel assembly is arranged in the valve cavity;
An exhaust interface is arranged on one side of the upper shell, a molecular sieve interface is arranged on the other side of the upper shell, the exhaust interface and the molecular sieve interface of the upper shell are communicated with the inner cavity of the upper shell, and the exhaust interface of the upper shell is positioned above the molecular sieve interface of the upper shell;
The high-pressure air inlet port on one side of the lower shell is positioned above the air outlet port on one side of the lower shell and is offset to the right side relative to the air outlet port on one side of the lower shell;
The exhaust interface and the high-pressure air inlet interface of the lower shell are communicated with the inner cavity of the lower shell; the exhaust interface of the lower shell is positioned below the molecular sieve interface of the lower shell.
Preferably, the mandrel assembly is arranged in the valve cavity, and a sealing ring of the mandrel upper section of the mandrel assembly is arranged in an upper end cavity of the valve cavity, wherein the upper end cavity is formed by connecting an upper cover and an upper shell; the sealing ring at the middle section of the mandrel is arranged in a middle end cavity of the valve cavity, and the middle end cavity is formed by connecting an upper shell and a lower shell; the sealing ring of the mandrel lower section is arranged in a lower end cavity of the valve cavity, and the lower end cavity is formed by connecting a lower shell and a valve seat; the platen of the mandrel assembly is above the diaphragm.
Preferably, an air inlet channel is arranged in the lower shell, an air inlet channel is arranged in the valve seat, the air inlet channel of the lower shell is communicated with one end of the air inlet channel of the valve seat, the other end of the air inlet channel of the valve seat is connected with the coil pilot head assembly, a through hole is further formed in the lower shell, one end of the through hole penetrates through the upper end of the valve seat, and the other end of the through hole penetrates through the ventilation cavity.
Compared with the prior art, the utility model has the beneficial effects that: by arranging an upper shell with an exhaust interface and a molecular sieve interface, the exhaust interface of the upper shell is positioned above the molecular sieve interface of the upper shell. By arranging a lower shell with an exhaust interface, a molecular sieve interface and a high-pressure air inlet interface, the exhaust interface of the lower shell is positioned below the molecular sieve interface of the lower shell. The upper shell is connected with the lower shell, and the lower shell is connected with the valve seat, so that a valve cavity is formed inside the upper shell, the lower shell and the valve seat, and five interfaces are formed outside the valve cavity, namely a high-pressure air inlet interface, two molecular sieve interfaces and two air exhaust interfaces. And the passage actions of the four interfaces can be completed simultaneously through the ascending and descending of the mandrel assembly arranged in the valve cavity. The volume of the utility model is reduced, and the installation space is saved; the working efficiency is improved and the production cost is saved.
Drawings
The utility model is described in further detail below with reference to the drawings and the detailed description.
FIG. 1 is a front view of a pneumatic reversing valve of an oxygenerator according to the present utility model;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a rear view of FIG. 1;
FIG. 4 is a top view of FIG. 1;
FIG. 5 is an isometric view of FIG. 1;
FIG. 6 is an isometric view of FIG. 2;
FIG. 7 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 8 is a cross-sectional view taken along line B-B of FIG. 2;
fig. 9 is a partial enlarged view of the region C shown in fig. 8.
Reference numerals illustrate: 1-upper cover, 2-upper casing, 3-lower casing, 4-dabber subassembly, 5-diaphragm, 6-disk seat, 7-coil guide head subassembly, 8-valve pocket, 9-exhaust interface, 10-molecular sieve interface, 11-high pressure inlet port, 12-inlet channel, 13-ventilation chamber, 14-through-hole, 401-dabber, 402-spring, 403-pressure disk, 404-sealing ring, 701-movable core.
Detailed Description
The embodiment provides a pneumatic reversing valve of an oxygen generator, as shown in fig. 1-9, which comprises a valve seat 6, a coil pilot head assembly 7 connected with the lower part of the valve seat 6, a diaphragm 5 arranged above the valve seat, a lower shell 3 connected with the valve seat 6, an upper shell 2 connected with the lower shell 3, an upper cover 1 connected with the upper shell 2 and a mandrel assembly 4, wherein the edge of the diaphragm 5 is pressed between the valve seat 6 and the lower shell 3, and a valve cavity 8 is formed in the valve cavity after the upper cover 1, the upper shell 2, the lower shell 3 and the valve seat 6 are connected, and the mandrel assembly 4 is arranged in the valve cavity 8. After the coil guide head assembly 7 is connected with the lower part of the valve seat 6, a ventilation cavity 13 is formed between the coil guide head assembly and the valve seat 6.
As shown in fig. 7, the mandrel assembly 4 includes a mandrel 401, a spring 402 disposed in an inner hole of an upper end of the mandrel 401 and connected to the upper cover 1, a pressure plate 403 disposed at a lower end of the mandrel 401, and seal rings 404 disposed at upper, middle, and lower stages of the mandrel 401.
The mandrel assembly 4 is arranged in the valve cavity 8, and a sealing ring 404 of the upper section of the mandrel 401 is arranged in an upper end cavity of the valve cavity 8, wherein the upper end cavity is formed by connecting the upper cover 1 and the upper shell 2. The sealing ring 404 at the middle section of the mandrel 401 is arranged in the middle end cavity of the valve cavity 8, and the middle end cavity is formed by connecting the upper shell 2 and the lower shell 3. The sealing ring 404 of the lower section of the mandrel 401 is arranged in the lower end chamber of the valve cavity 8, and the lower end chamber is formed by connecting the lower shell 3 and the valve seat 6. With its platen 403 above the membrane 5.
As shown in fig. 2, one side of the upper shell 2 is provided with an exhaust port 9, the other side of the upper shell 2 is provided with a molecular sieve port 10, the exhaust port 9 and the molecular sieve port 10 of the upper shell 2 are communicated with the inner cavity of the upper shell 2, and the exhaust port 9 of the upper shell 2 is positioned above the molecular sieve port 10 of the upper shell 2.
An exhaust port 9, a high-pressure air inlet port 11 and a molecular sieve port 10 are arranged on one side of the lower shell 3 and the other side of the lower shell 3; as shown in fig. 3, the high-pressure intake port 11 on the lower case 3 side is located above the exhaust port 9 on the lower case 3 side, and is offset to the right with respect to the exhaust port 9 on the lower case 3 side. The exhaust port 9 and the high-pressure air inlet port 11 of the lower shell 3 are communicated with the inner cavity of the lower shell 3. As shown in fig. 2, the exhaust port 9 of the lower housing 3 is located below the molecular sieve port 10 of the lower housing 3.
As shown in fig. 9, an air inlet channel 12 is arranged in the lower casing 3, an air inlet channel 12 is arranged in the valve seat 6, the air inlet channel 12 of the lower casing 3 is communicated with one end of the air inlet channel 12 of the valve seat 6, the other end of the air inlet channel 12 of the valve seat 6 is connected with the coil guiding head assembly 7, a through hole 14 is further arranged in the lower casing 3, one end of the through hole 14 penetrates through the upper end of the valve seat 6, and the other end of the through hole 14 penetrates through the ventilation cavity 13.
The present embodiment operates in two states:
The first state is that when the coil guide head 7 is energized, the movable iron core 701 of the coil guide head 7 is separated from the air intake passage 12 of the valve seat 6, and the air intake passage 12 is opened; at this time, high-pressure gas enters the air inlet channel 12 from the high-pressure air inlet port 11, the position of the high-pressure air inlet port 11 is shown in fig. 2 and 3, the high-pressure gas reaches the air vent cavity 13, the diaphragm 5 is jacked up by the through hole 14 against the pretightening force of the spring 402, and the diaphragm 5 pushes the pressure plate 403 upwards to enable the mandrel assembly 4 to move upwards; at this time, as shown in fig. 7, the seal ring 404 of the upper stage of the spindle 401 seals the upper port of the upper end chamber of the valve chamber 8, the seal ring 404 of the middle stage of the spindle 401 seals the upper port of the middle end chamber of the valve chamber 8, and the seal ring 404 of the lower stage of the spindle 401 seals the upper port of the lower end chamber of the valve chamber 8. As can be seen from fig. 2 and 7, since the exhaust port 9 of the lower housing 3 is located below the molecular sieve port 10 of the lower housing 3, after the sealing ring 404 at the lower section of the mandrel 401 seals the upper port of the lower end chamber of the valve cavity 8, only the exhaust port 9 of the lower housing 3 is sealed, while the molecular sieve port 10 of the lower housing 3 is still in conduction, so that another part of high-pressure gas enters from the high-pressure air inlet port 11 and is discharged from the molecular sieve port 10 of the lower housing 3, so that the molecular sieve generates an adsorption effect to adsorb nitrogen and extract oxygen to be delivered to the oxygen storage tank.
Meanwhile, the sealing ring 404 in the middle section of the mandrel 401 seals the upper port of the middle end chamber of the valve cavity 8, so that high-pressure gas of the high-pressure gas inlet port 11 cannot enter the gas outlet port 9 and the molecular sieve port 10 of the upper shell 2, the gas outlet port 9 and the molecular sieve port 10 of the upper shell 2 are conducted, and at the moment, nitrogen discharged by the molecular sieve port 10 of the upper shell 2 enters the gas outlet port 9 of the upper shell 2 and is discharged.
In the second state, when the coil guide head 7 is powered off, as shown in fig. 9, the movable iron core 701 of the coil guide head 7 is attached to the air inlet channel 12 of the valve seat 6, and the air inlet channel 12 is closed; spring 402 returns to a relaxed state, causing its spindle assembly 4 to move downward as a whole; at this time, as shown in fig. 7, the sealing ring 404 at the upper section of the mandrel 401 seals the lower port of the upper end chamber of the valve chamber 8, the sealing ring 404 at the middle section of the mandrel 401 seals the lower port of the middle end chamber of the valve chamber 8, and the sealing ring 404 at the lower section of the mandrel 401 is separated from the upper port of the lower end chamber of the valve chamber 8 and is in an open state; as can be seen from fig. 2 and 7, since the exhaust port 9 of the upper housing 2 is located above the molecular sieve port 10 of the upper housing 2, after the sealing ring 404 at the upper section of the mandrel 401 seals the lower port of the upper end chamber of the valve cavity 8, the exhaust port 9 of the upper housing 2 is sealed, while the molecular sieve port 10 of the upper housing 2 is still in conduction, so that high-pressure gas enters from the high-pressure air inlet port 11 and is discharged from the molecular sieve port 10 of the upper housing 2, so that the molecular sieve generates adsorption effect to adsorb nitrogen and extract oxygen to the oxygen storage tank.
Meanwhile, as the sealing ring 404 in the middle section of the mandrel 401 seals the lower port of the middle end chamber of the valve cavity 8, high-pressure gas of the high-pressure air inlet port 11 cannot enter the air outlet port 9 and the molecular sieve port 10 of the lower shell 3;
because the sealing ring 404 at the lower section of the mandrel 401 is separated from the upper port of the lower end chamber of the valve cavity 8 and is in an open state, the exhaust port 9 and the molecular sieve port 10 of the lower shell 3 are communicated, and at the moment, nitrogen discharged by the molecular sieve port 10 of the lower shell 3 enters the exhaust port 9 of the lower shell 3 and is discharged.
The high-pressure gas is introduced and discharged through switching the power on and power off of the coil guiding head assembly 7, so that nitrogen and oxygen in the molecular sieve tank are extracted and discharged. The cycle is thus switched to achieve a continuous oxygen supply.
Compared with the prior art, the beneficial effects of this embodiment lie in: by providing an upper housing 2 with an exhaust port 9, a molecular sieve port 10, the exhaust port 9 of the upper housing 2 is located above the molecular sieve port 10 of the upper housing 2. By providing a lower housing 3 with an exhaust port 9, a molecular sieve port 10, a high pressure inlet port 11, the exhaust port 9 of the lower housing 3 is located below the molecular sieve port 10 of the lower housing 3. The upper shell 2 is connected with the lower shell 3, and the lower shell 3 is connected with the valve seat 6, so that a valve cavity 8 is formed inside the upper shell 2, the lower shell 3 and the valve seat 6, and five interfaces, namely a high-pressure air inlet interface, two molecular sieve interfaces and two air exhaust interfaces, are formed outside the upper shell 2, the lower shell 3 and the valve seat 6. And the passage actions of the four interfaces can be completed simultaneously through the ascending and descending of the mandrel assembly arranged in the valve cavity 8. The volume of the embodiment is reduced, and the installation space is saved; the working efficiency is improved and the production cost is saved.
The utility model is not limited to the precise construction which has been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (3)
1. The utility model provides an oxygenerator pneumatic reversing valve, includes disk seat (6), with coil leading head subassembly (7) that disk seat (6) below is connected, set up diaphragm (5) of disk seat (6) top, with lower casing (3) that disk seat (6) are connected, with last casing (2) that lower casing (3) are connected, with upper cover (1) that last casing (2) are connected to and dabber subassembly (4), the edge pressfitting of diaphragm (5) is between disk seat (6) and lower casing (3), coil leading head subassembly (7) are connected with disk seat (6) below after, form a ventilation chamber (13) between its two, its characterized in that:
After the upper cover (1), the upper shell (2), the lower shell (3) and the valve seat (6) are connected, a valve cavity (8) is formed in the upper shell, and the mandrel assembly (4) is arranged in the valve cavity (8);
An exhaust interface (9) is arranged on one side of the upper shell (2), a molecular sieve interface (10) is arranged on the other side of the upper shell (2), the exhaust interface (9) and the molecular sieve interface (10) of the upper shell (2) are communicated with an inner cavity of the upper shell (2), and the exhaust interface (9) of the upper shell (2) is positioned above the molecular sieve interface (10) of the upper shell (2);
The high-pressure air inlet port (11) on one side of the lower shell (3) is positioned above the air outlet port (9) on one side of the lower shell (3) and is offset to the right side relative to the air outlet port (9) on one side of the lower shell (3);
The exhaust interface (9) and the high-pressure air inlet interface (11) of the lower shell (3) are communicated with the inner cavity of the lower shell (3); the exhaust interface (9) of the lower shell (3) is positioned below the molecular sieve interface (10) of the lower shell (3).
2. The oxygenerator pneumatic reversing valve according to claim 1, wherein: the mandrel assembly (4) is arranged in the valve cavity (8), and a sealing ring (404) of the upper section of the mandrel (401) of the mandrel assembly (4) is arranged in an upper end cavity of the valve cavity (8), wherein the upper end cavity is formed by connecting an upper cover (1) and an upper shell (2); the sealing ring (404) at the middle section of the mandrel (401) is arranged in a middle end cavity of the valve cavity (8), and the middle end cavity is formed by connecting an upper shell (2) and a lower shell (3); the sealing ring (404) at the lower section of the mandrel (401) is arranged in the lower end cavity of the valve cavity (8), and the lower end cavity is formed by connecting the lower shell (3) and the valve seat (6); a pressure plate (403) of the mandrel assembly (4) is positioned above the membrane (5).
3. The oxygenerator pneumatic reversing valve according to claim 1, wherein: the inside of inferior valve body (3) is equipped with an inlet channel (12), the inside of disk seat (6) is equipped with an inlet channel (12), inlet channel (12) of inferior valve body (3) communicate with each other with the one end of inlet channel (12) of disk seat (6) and are connected, the other end of inlet channel (12) of disk seat (6) is connected with coil guide head subassembly (7), the inside of inferior valve body (3) still sets up a through-hole (14), the upper end of disk seat (6) is link up to through-hole (14) one end, the through-hole (14) other end and ventilation cavity (13) link up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322305858.6U CN220850844U (en) | 2023-08-28 | 2023-08-28 | Pneumatic reversing valve of oxygenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322305858.6U CN220850844U (en) | 2023-08-28 | 2023-08-28 | Pneumatic reversing valve of oxygenerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220850844U true CN220850844U (en) | 2024-04-26 |
Family
ID=90779782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322305858.6U Active CN220850844U (en) | 2023-08-28 | 2023-08-28 | Pneumatic reversing valve of oxygenerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220850844U (en) |
-
2023
- 2023-08-28 CN CN202322305858.6U patent/CN220850844U/en active Active
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