CN202100784U - Membrane type pressure retaining valve - Google Patents
Membrane type pressure retaining valve Download PDFInfo
- Publication number
- CN202100784U CN202100784U CN2011202068138U CN201120206813U CN202100784U CN 202100784 U CN202100784 U CN 202100784U CN 2011202068138 U CN2011202068138 U CN 2011202068138U CN 201120206813 U CN201120206813 U CN 201120206813U CN 202100784 U CN202100784 U CN 202100784U
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- valve
- valve body
- membrane type
- type pressure
- pressure retaining
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- 239000012528 membrane Substances 0.000 title claims abstract description 12
- 206010022000 influenza Diseases 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The utility model discloses a membrane type pressure retaining valve which overcomes the disadvantages that the internal structure of a present product is complicated and the manufacturing and processing are difficult. The membrane type pressure retaining valve comprises a valve body and a valve cap, wherein a pressure port is arranged at the end part of the valve body, and an air exhaust port is arranged at the end part of the valve cap; an elastic diaphragm is embedded between the valve cap and the valve body, a ring-shaped concave cavity is arranged in the valve cap, a spring and a spring cover are arranged in the ring-shaped concave cavity, and the bottom surface of the spring cover is in contact with the diaphragm in a leaning way; an inner cavity of the valve body is provided with a plurality of valve ports; the valve ports are connected with an air channel, leading to the inner cavity of the valve body; the valve ports are communicated with the air exhaust port of the valve cap, and a supporting sleeve connected with the elastic diaphragm is arranged in the center of the bottom end of the valve cap. Compared with the present product, the membrane type pressure retaining valve has the following advantages: the membrane type pressure retaining valve has reliable running performance and simple structure, is convenient to manufacture and process and can be widely applied to such pneumatic control fields as heavy industry (shipping), petrochemical industry, medical equipment, engineering machinery and the like.
Description
Technical field
The utility model relates to the compression pressure control gear, especially refers to a kind of pressure holding valve product structure that diaphragm is realized sealing of using.
Background technique
Pressure holding valve is a kind ofly to need not that external power, valve opening force value can set up on their own, the pneumatic element of the non-return function of tool; After this product is serially connected with atmospheric control, can effectively protect other Pneumatic component not receive high speed, pulsing airflow to influence and damage; After being applied to compressor assembly, have only and after gas pressure rises to rated working pressure, just open valve, can guarantee the coupled pneumatic element proper functioning that connects, safeguard the safe operation of relevant device; When occurring tightly stopping or people during for misoperation, can cut off pipeline rapidly and be unlikely to make pneumatic components and parts to produce antikinesis, effectively get rid of potential safety hazard.This type of relatively typical product such as State Intellectual Property Office are called the utility model patent product of " pressure holding valve " in the patent No. of notice of authorization on the 2nd January in 2008 for the ZL200620161951.8 name, it " by valve body, spool, air intake assembly, go out pneumatic module, needle-valve, non-return mechanism and spring pressure-regulating device and form, there are air-inlet cavity and outlet chamber in the middle part of valve body; there is the circular hole of concentric perforation at the cavity two ends; there is a valve seat centre, on one section taper hole is arranged, in its cavity spool is housed; the seal shaft at spool two ends cooperates with the circular hole at cavity two ends; have the cone of one section tapering less than taper hole tapering on the valve seat, cone and taper hole to be the linear sealing cooperation in the contacting point in the middle part of the spool, the turnover gas parts that communicate with cavity, the spring pressure-regulating device and the non-return mechanism that cooperate with spool are in addition arranged on the valve body; it is little that this pressure holding valve in use has a spring-load; Adjustment easily and scope big, precision is high, closes and advantages such as the cracking pressure difference is less." but this series products internal structure is comparatively complicated, component are numerous, make processing difficulties, cost of production is higher, the extensive use that is difficult to satisfy the pressure holding valve product is required.
The model utility content
The technical problem that the utility model will solve is to overcome existing product internal structure complicacy, manufacturing processing difficulties and higher defective and the deficiency of cost of production; To society the membrane type pressure holding valve product that a kind of ride quality is reliable, simple in structure, manufacturing is easy to process is provided, extensively satisfies the pressure holding valve product promotion and use required.
The utility model solves the technological scheme that its technical problem adopted: the membrane type pressure holding valve comprises valve body and bonnet, and said valve end is provided with pressure interface, and said bonnet end is provided with exhaust port; Be embedded with flexible sheet between said bonnet and the said valve body, be provided with annular cavity in the said bonnet, be provided with spring and spring shield in the said annular cavity, the bottom surface of said spring shield and said diaphragm are inconsistent; Said body cavity is provided with the valve port that a plurality of connection air flues lead to said body cavity; Said valve port is connected with the exhaust port of said bonnet.
Said bonnet bottom center is provided with supporting sleeve and is connected with said flexible sheet.
The utility model membrane type pressure holding valve; When by the pressurized gas of pressure interface A input during greater than cracking pressure, air pressure acts on diaphragm and makes it overcome spring shield and support the back and break away from the sealing valve port face via connecting air flue, and valve port is opened; Pressurized gas is discharged by exhaust port B; Thereby realize its automatically pressure limiting unlatching and unidirectional non-return function, guarantee the coupled pneumatic element proper functioning that connects, safeguard the safe operation of relevant device.Compare than existing product, have the advantage that ride quality is reliable, simple in structure, manufacturing is easy to process, can be widely used in pneumatic control fields such as boats and ships heavy industry, petrochemical industry, medical equipment, engineering machinery.
Description of drawings
Fig. 1 is the utility model product structure schematic representation.
Embodiment
As shown in Figure 1, the utility model membrane type pressure holding valve comprises valve body 1 and bonnet 6, and said bonnet 6 spins and is fixed in an end of said valve body 1; Be embedded with flexible sheet 3 between said bonnet 6 bottoms and the said valve body 1, said flexible sheet 3 centers are connected with the supporting sleeve 2 of being located at said bonnet 6 bottom center; Supporting sleeve 2 outsides of said bonnet 6 are provided with annular cavity 8, are provided with spring 5 and spring shield 4 in the said annular cavity 8, and the bottom surface of said spring shield 4 and said diaphragm 3 are inconsistent; The other end of said valve body 1 is provided with pressure interface A, and said bonnet 6 is provided with exhaust port B; The valve body 1 inner chamber ring-type of said pressure interface A is evenly equipped with a plurality of connection air flues 7, and said connection air flue 7 is provided with valve port 9 near said valve body 1 inner chamber of said diaphragm 3 one sides, and said valve port 9 is connected with the exhaust port B of said bonnet 6.
Continue to combine accompanying drawing below, the working principle of summary the utility model product.During the assembling of this product, can be through the spring 5 of apolegamy different size, perhaps spring shield 4 is set corresponding cracking pressure, and bonnet 6 is screwed with valve body 1 mutually, prevents that pressurized gas from being leaked by threaded coupling.During work, when by the pressurized gas of pressure interface A input during less than cracking pressure, diaphragm 3 receives the support of spring shield 4 bottoms and with valve port 9 hermetically closings, exhaust port B does not have pressure.When by the pressurized gas of pressure interface A input during greater than cracking pressure; Air pressure acts on diaphragm 3 and makes it overcome spring shield 4 support back disengaging valve ports 9 sealing surfaces via connecting air flue 7; Valve port 9 is opened, and pressurized gas is discharged by exhaust port B, thereby realizes its automatically pressure limiting unlatching and unidirectional non-return function; Guarantee the coupled pneumatic element proper functioning that connects, safeguard the safe operation of relevant device.
Claims (2)
1. a membrane type pressure holding valve comprises valve body (1) and bonnet (6), and said valve body (1) end is provided with pressure interface (A), and said bonnet (6) end is provided with exhaust port (B); It is characterized in that: be embedded with flexible sheet (3) between said bonnet (6) and the said valve body (1); Be provided with annular cavity (8) in the said bonnet (6); Be provided with spring (5) and spring shield (4) in the said annular cavity (8), the bottom surface of said spring shield (4) and said diaphragm (3) are inconsistent; Said valve body (1) inner chamber is provided with the valve port (9) that a plurality of connection air flues (7) lead to said valve body (1) inner chamber; Said valve port (9) is connected with the exhaust port (B) of said bonnet (6).
2. membrane type pressure holding valve according to claim 1, it is characterized in that: said bonnet (6) bottom center is provided with supporting sleeve (2) and is connected with said flexible sheet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202068138U CN202100784U (en) | 2011-06-15 | 2011-06-15 | Membrane type pressure retaining valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202068138U CN202100784U (en) | 2011-06-15 | 2011-06-15 | Membrane type pressure retaining valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100784U true CN202100784U (en) | 2012-01-04 |
Family
ID=45386798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202068138U Expired - Fee Related CN202100784U (en) | 2011-06-15 | 2011-06-15 | Membrane type pressure retaining valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100784U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003701A (en) * | 2015-08-03 | 2015-10-28 | 南京理工大学 | Pressure maintaining valve with variable opening pressure |
| CN105579309A (en) * | 2013-09-05 | 2016-05-11 | 纽约气闸有限公司 | Differential relay type brake cylinder maintaining valve |
-
2011
- 2011-06-15 CN CN2011202068138U patent/CN202100784U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105579309A (en) * | 2013-09-05 | 2016-05-11 | 纽约气闸有限公司 | Differential relay type brake cylinder maintaining valve |
| CN105579309B (en) * | 2013-09-05 | 2018-02-02 | 纽约气闸有限公司 | Differential type servo type checking cylinder keeps valve |
| CN105003701A (en) * | 2015-08-03 | 2015-10-28 | 南京理工大学 | Pressure maintaining valve with variable opening pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FENGHUA XINYI PNEUMATIC ENGINEERING CO., LTD. Free format text: FORMER OWNER: MAO MENGQI Effective date: 20130427 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130427 Address after: 315502 Zhejiang province Fenghua City Xikou town Ji Shan Yongan Industrial Park No. 3 Patentee after: FENGHUA XINYI PNEUMATIC ENGINEERING CO., LTD. Address before: ZTE road 315502 Zhejiang city of Fenghua province Xikou town No. 618 Fenghua Xinyi pneumatic component factory Patentee before: Mao Mengqi |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20130615 |