CN211975979U - Pneumatic combination valve for oxygenerator - Google Patents
Pneumatic combination valve for oxygenerator Download PDFInfo
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- CN211975979U CN211975979U CN202020280911.5U CN202020280911U CN211975979U CN 211975979 U CN211975979 U CN 211975979U CN 202020280911 U CN202020280911 U CN 202020280911U CN 211975979 U CN211975979 U CN 211975979U
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Abstract
The utility model discloses a pneumatic combination valve for oxygenerator, including the guide's solenoid valve that is used for controlling the gas circuit switch, the apron of fixed setting below the guide's solenoid valve, the valve body of fixed setting below the apron and install the push rod subassembly in the valve body inside, one side of valve body is seted up the gas vent that is used for discharging nitrogen gas and is used for the air inlet of input air, the opposite side of valve body is seted up A mouth and the B mouth of being connected with a molecular sieve section of thick bamboo, A mouth includes first air flue and second air flue, the diameter of first air flue is greater than the diameter of second air flue; the port B comprises a third air passage and a fourth air passage, and the diameter of the third air passage is larger than that of the fourth air passage. The technical scheme provided by the utility model, effectively reduced the gaseous switching and the exhaust noise of pneumatic combination valve, and then reduced the noise at work of molecular sieve oxygen generation system complete machine.
Description
Technical Field
The utility model relates to a pneumatic valve technical field, in particular to pneumatic combination valve for oxygenerator.
Background
A plurality of household oxygenerators are available in the market, and the use characteristics of the household oxygenerators are different due to different oxygen generation principles. The oxygen generation principle of the household oxygen generator comprises: 1. the principle of the molecular sieve; 2. the principle of a macromolecular oxygen-enriched membrane; 3. water electrolysis principle; 4. chemical reaction oxygen-generating principle. The molecular sieve oxygen generator is the only mature oxygen generator with international and national standards.
A molecular sieve oxygen production system, also called molecular sieve Pressure Swing Adsorption (PSA) oxygen production system, uses molecular sieve as adsorbent, uses environment air as raw material by Pressure Swing Adsorption (PSA), under the condition of normal temperature and low pressure, uses the characteristic that the adsorption capacity of molecular sieve for nitrogen (adsorbate) in air is increased when pressurizing and the adsorption capacity for nitrogen in air is decreased when depressurizing to form a rapid cycle process of pressure adsorption and pressure reduction desorption, so that oxygen and nitrogen in air are separated, carbon dioxide, gaseous acid and other gaseous oxides in air all belong to substances with strong molecular polarity, and the oxygen produced by the air has purity of more than 93% v/v.
The scheme of the existing molecular sieve oxygen generation system comprises a pneumatic combination valve and an oxygen generation assembly, the pneumatic combination valve used on the existing molecular sieve oxygen generation system has large noise in the air intake and exhaust processes, so that the noise of the whole molecular sieve oxygen generation system is increased, the use comfort of a user is greatly reduced, and the user experience is poor.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a pneumatic combination valve for oxygenerator has effectively reduced the noise of the gaseous switching of pneumatic combination valve and exhaust process, has promoted the use experience of molecular sieve system oxygen system.
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
the utility model provides a pneumatic combination valve for oxygenerator, including the guide's solenoid valve that is used for controlling the gas circuit switch, the apron of fixed setting below the guide's solenoid valve, the push rod subassembly of fixed setting in the valve body below the apron, one side of valve body is seted up the gas vent that is used for discharging nitrogen gas and is used for the air inlet of input air, the opposite side of valve body is seted up A mouth and the B mouth of being connected with a molecular sieve section of thick bamboo, A mouth includes first air flue and second air flue, first air flue with the second air flue communicates, the diameter of first air flue is greater than the diameter of second air flue; the port B comprises a third air passage and a fourth air passage, the third air passage is communicated with the fourth air passage, and the diameter of the third air passage is larger than that of the fourth air passage.
In a further aspect of the above scheme, the first air passage, the second air passage, the third air passage and the fourth air passage are all cylindrical air passages.
In a further aspect of the above scheme, the first air passage and the second air passage are of an integrally formed structure, and the third air passage and the fourth air passage are of an integrally formed structure.
According to a further scheme of the scheme, the air valve further comprises a rear cover plate, the rear cover plate is covered on the side face where the opening A of the valve body is located, the second air passage is formed in the rear cover plate, and the fourth air passage is formed in the rear cover plate.
A further scheme of the above scheme is that a push rod cavity for accommodating the push rod assembly is arranged inside the valve body, the push rod assembly comprises an upper sealing assembly, a push rod, a lower sealing assembly and a fixing device, the upper sealing assembly is clamped at the upper end of the push rod, the lower sealing assembly is clamped at the lower end of the push rod, and the fixing device is arranged below the lower sealing assembly.
The further scheme of the scheme is that the upper sealing assembly comprises an upper sealing cover and an upper membrane, wherein the sealing cover is arranged at the upper end of the cavity of the push rod, and the upper membrane is clamped with the push rod; the lower sealing assembly comprises a lower sealing cover and a lower membrane, wherein the sealing cover is arranged at the lower end of the push rod cavity; the fixing device is a clamp spring.
According to a further scheme of the scheme, a first vent hole is formed in the central area of the upper sealing cover, and a first sealing ring is arranged on the periphery of the first vent hole.
Preferably, the number of the push rod cavities is 2, and the number of the push rod assemblies is 2
Compared with the prior art, the technical scheme of the utility model have following advantage and beneficial effect: a pneumatic combination valve for an oxygen generator comprises a pilot electromagnetic valve for controlling a gas circuit switch, a cover plate fixedly arranged below the pilot electromagnetic valve, a valve body fixedly arranged below the cover plate and a push rod assembly arranged in the valve body, wherein one side of the valve body is provided with an exhaust port for discharging nitrogen and an air inlet for inputting air, the other side of the valve body is provided with an A port and a B port which are connected with a molecular sieve cylinder, the A port comprises a first gas passage and a second gas passage, the first gas passage is communicated with the second gas passage, and the diameter of the first gas passage is larger than that of the second gas passage; the port B comprises a third air passage and a fourth air passage, the third air passage is communicated with the fourth air passage, and the diameter of the third air passage is larger than that of the fourth air passage. The utility model provides a technical scheme carries out special design through the air flue with A mouth and B mouth to at a mouth and the intraoral cavity that forms of B, play impedance noise cancelling action, effectively reduced the gas switching and the exhaust noise of pneumatic combination valve, and then reduced the noise at work of molecular sieve oxygen generation system complete machine.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic perspective view of a pneumatic combination valve in an embodiment;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a rear view of FIG. 1;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a schematic perspective view of a pneumatic combination valve in another embodiment;
FIG. 6 is a full sectional view of FIG. 1;
FIG. 7 is a rear view of FIG. 6;
fig. 8 is a sectional view taken along line B-B of fig. 7.
In the figure: 1-a pilot electromagnetic valve; 2-cover plate; 3-an exhaust port; 4-an air inlet; 5-A port; 51-a first airway; 52-a second airway; 6-valve body; 7-port B; 71-third airway; 72-fourth airway; 8-rear cover plate; 9-an upper seal assembly; 911-left upper sealing cover; 912-right upper seal cap; 921-left upper membrane; 931-left first vent; 932-right first vent; 101-left push rod; 102-right push bar; 11-a fixture; 20-a lower seal assembly; 21-lower sealing cover; 22-lower diaphragm.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, product, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product, or apparatus.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly. To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.
Examples
As shown in fig. 1 to 8, the present embodiment provides a pneumatic combination valve for an oxygenerator, including a pilot electromagnetic valve 1 for controlling an air circuit switch, a cover plate 2 fixedly disposed below the pilot electromagnetic valve, a valve body 6 fixedly disposed below the cover plate 2, and two sets of push rod assemblies mounted inside the valve body 6, an exhaust port 3 for exhausting compressed nitrogen and an air inlet 4 for inputting air are disposed on one side of the valve body 6, an a port 5 and a B port 7 connected to a molecular sieve cylinder are disposed on the other side of the valve body 6, the a port 5 includes a first air passage 51 and a second air passage 52, the first air passage 51 is communicated with the second air passage 52, and a diameter of the first air passage 51 is greater than a diameter of the second air passage 52; the B port 7 comprises a third air passage 71 and a fourth air passage 72, the third air passage 71 is communicated with the fourth air passage 72, and the diameter of the third air passage 71 is larger than that of the fourth air passage 72. The first air passage 51 and the third air passage 71 with larger diameters form relatively larger cavities in the port A5 and the port B7 respectively, so that the effect of impedance noise reduction can be achieved, and the air switching and exhaust noise of the pneumatic combination valve can be effectively reduced.
In order to reduce the air passage resistance and make the air flow smoother, in one embodiment, the first air passage 51, the second air passage 52, the third air passage 71 and the fourth air passage 72 are all cylindrical air passages.
In one embodiment, the first air passage 51 and the second air passage 52 are integrally formed, the third air passage 71 and the fourth air passage 72 are integrally formed, and the port a 5 and the port B7 formed by the integrally formed structures have more excellent air passage tightness without additional sealing measures. However, the above structure has certain difficulties in the process level.
Optionally, in order to reduce the difficulty in processing the structures of the port a 5 and the port B7, in one embodiment, the valve further includes a back cover plate 8, the back cover plate 8 is covered on the side where the port a 5 of the valve body 6 is located, the second air duct 52 is opened on the back cover plate, and the fourth air duct 72 is opened on the back cover plate 8.
In one embodiment, a push rod cavity (not shown) for accommodating a push rod assembly is formed inside the valve body 6, the push rod assembly includes a lower sealing assembly, a push rod, a lower sealing assembly and a fixing device 11, the lower sealing assembly is clamped at the upper end of the push rod, the lower sealing assembly is clamped at the lower end of the push rod, and the fixing device 11 is arranged below the lower sealing assembly.
In one embodiment, the lower sealing assembly comprises an upper sealing cover and an upper membrane, wherein the sealing cover is arranged at the upper end of the cavity of the push rod, and the upper membrane is clamped with the push rod; the lower sealing assembly comprises a lower sealing cover 21 and a lower membrane 22, wherein the sealing cover is arranged at the lower end of the push rod cavity; the fixing device 11 is a clamp spring.
In one embodiment, a central region of the upper sealing cover is provided with a first vent hole, and a sealing ring (not shown in the figure) is arranged on the periphery of the first vent hole.
The working principle of the pneumatic combination valve for the oxygen generator provided by the embodiment is as follows:
compressed air enters the valve body 6 from the air inlet 4, and enters the cover plate 2 and the pilot electromagnetic valve 1 through a gas channel (not shown in the figure) in the valve body 6: if the pilot electromagnetic valve 1 is electrified at the left position, compressed air enters a gas channel in the cover plate 2 through the left position of the pilot electromagnetic valve 1, then acts on the left upper diaphragm 921 through a left first vent hole 931 of a left upper sealing cover 911, pushes the left push rod 101 to move downwards, at the moment, the port B7 is opened, the compressed air enters a left molecular sieve cylinder (not shown in the figure) through the port B7, meanwhile, compressed nitrogen in the right molecular sieve cylinder enters the valve body 6 from the port A5, and the compressed nitrogen is discharged from the exhaust port 3 through a gas channel in the valve body 6; if 1 right position of guide's solenoid valve is electrified, compressed air gets into the gas passage in the apron 2 through 1 right position of guide's solenoid valve, then acts on diaphragm 922 on the right side through the first air vent 932 of the right side of the sealed lid 912 on the right side, promotes right side push rod 102 downstream, and mouth A5 is opened this moment, and compressed air gets into a right side molecular sieve section of thick bamboo through mouth A5, and the compressed nitrogen gas in the left side molecular sieve section of thick bamboo gets into valve body 6 from mouth B7 simultaneously, gets into gas vent 3 through the pneumatic channel in the valve body 6 and discharges nitrogen gas.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The pneumatic combination valve for the oxygen generator is characterized by comprising a pilot electromagnetic valve for controlling a gas circuit switch, a cover plate fixedly arranged below the pilot electromagnetic valve, a valve body fixedly arranged below the cover plate and a push rod assembly arranged in the valve body, wherein one side of the valve body is provided with an exhaust port for exhausting nitrogen and an air inlet for inputting air, the other side of the valve body is provided with an A port and a B port which are connected with a molecular sieve cylinder, the A port comprises a first air passage and a second air passage, the first air passage is communicated with the second air passage, and the diameter of the first air passage is larger than that of the second air passage; the port B comprises a third air passage and a fourth air passage, the third air passage is communicated with the fourth air passage, and the diameter of the third air passage is larger than that of the fourth air passage.
2. The pneumatic combination valve for an oxygen generator as set forth in claim 1, wherein the first, second, third and fourth gas passages are all cylindrical gas passages.
3. The pneumatic combination valve for an oxygen generator as set forth in claim 2, wherein the first and second gas passages are of one-piece construction, and the third and fourth gas passages are of one-piece construction.
4. The pneumatic combination valve for an oxygen generator as set forth in claim 2, further comprising a back cover plate covering the side of the valve body a, wherein the second air passage is opened in the back cover plate, and wherein the fourth air passage is opened in the back cover plate.
5. The pneumatic combination valve for the oxygen generator as recited in claim 1, wherein a push rod cavity for accommodating the push rod assembly is formed inside the valve body, the push rod assembly comprises an upper sealing assembly, a push rod, a lower sealing assembly and a fixing device, the upper sealing assembly is clamped at an upper end of the push rod, the lower sealing assembly is clamped at a lower end of the push rod, and the fixing device is arranged below the lower sealing assembly.
6. The pneumatic combination valve for the oxygen generator as claimed in claim 5, wherein the upper sealing assembly comprises an upper sealing cover arranged at the upper end of the cavity of the push rod and an upper membrane clamped with the push rod; the lower sealing assembly comprises a lower sealing cover and a lower membrane, wherein the sealing cover is arranged at the lower end of the push rod cavity; the fixing device is a clamp spring.
7. The pneumatic combination valve for an oxygen generator as set forth in claim 6, wherein the upper sealing cover has a first vent hole opened in a central region thereof, and a first sealing ring is disposed on an outer periphery of the first vent hole.
8. The pneumatic combination valve for an oxygenerator of claim 5, wherein the number of pushrod cavities is 2 and the number of pushrod assemblies is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020280911.5U CN211975979U (en) | 2020-03-09 | 2020-03-09 | Pneumatic combination valve for oxygenerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020280911.5U CN211975979U (en) | 2020-03-09 | 2020-03-09 | Pneumatic combination valve for oxygenerator |
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| Publication Number | Publication Date |
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| CN211975979U true CN211975979U (en) | 2020-11-20 |
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| CN202020280911.5U Active CN211975979U (en) | 2020-03-09 | 2020-03-09 | Pneumatic combination valve for oxygenerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255923A (en) * | 2020-03-09 | 2020-06-09 | 柯尔(苏州)医疗科技有限公司 | Pneumatic combination valve for oxygenerator |
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- 2020-03-09 CN CN202020280911.5U patent/CN211975979U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255923A (en) * | 2020-03-09 | 2020-06-09 | 柯尔(苏州)医疗科技有限公司 | Pneumatic combination valve for oxygenerator |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A pneumatic combined valve for oxygen generator Effective date of registration: 20220530 Granted publication date: 20201120 Pledgee: Bank of Jiangsu Co.,Ltd. Suzhou Xiangcheng sub branch Pledgor: CARER MEDICAL EQUIPMENT Co.,Ltd. Registration number: Y2022320010169 |