CN203718107U - Pressure reducing valve adopting large-area plastic diaphragm - Google Patents
Pressure reducing valve adopting large-area plastic diaphragm Download PDFInfo
- Publication number
- CN203718107U CN203718107U CN201420097188.1U CN201420097188U CN203718107U CN 203718107 U CN203718107 U CN 203718107U CN 201420097188 U CN201420097188 U CN 201420097188U CN 203718107 U CN203718107 U CN 203718107U
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- China
- Prior art keywords
- diaphragm
- nut
- valve
- gland
- screw rod
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- Expired - Fee Related
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Abstract
A pressure reducing valve adopting a large-area plastic diaphragm comprises an adjusting screw rod, wherein the top of the adjusting screw rod is connected with a handle, the adjusting screw rod penetrates through the bottom end of a bonnet and is propped against a gland, an adjusting spring is connected below the gland, and the other end of the adjusting spring is propped in a diaphragm pressing piece; the plastic diaphragm is clamped by the diaphragm pressing piece and a diaphragm bolt, an ejector pin is connected below the diaphragm bolt, the other end of the ejector pin is connected with a screw hole in a valve seat bearing, the edge of the valve seat bearing is connected with a bearing nut, a gland nut is contacted with the bearing nut and arranged in a valve body, and the ejector pin moves up and down according to pressure change, so that the bearer nut and the gland nut are contacted or separated.
Description
Technical field
The utility model relates to reduction valve technical field, specifically relates to a kind of large size plastic film reduction valve.
Background technique
The technology of current decompression valve has two kinds substantially: 1, metal diaphragm: flow is restricted, as accomplished the large flow of low pressure (1MPa is following), metal diaphragm cannot reflect at so low pressure.2, piston: taking high pressure as main (more than 3.5MPa), in the time of low pressure insufficient sensitivity, cannot be used for clean system.
Summary of the invention
The utility model is mainly to solve the existing technical problem of above-mentioned prior art, and a kind of large size plastic film reduction valve is provided.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of large size plastic film reduction valve, comprise adjusting screw rod, described adjusting screw rod top connecting handle, described adjusting screw rod withstands on gland through valve gap bottom, under described gland, connect Regulation spring, the other end of described Regulation spring withstands in diaphragm compressing tablet; Described diaphragm compressing tablet and diaphragm bolt clip plastic diaphragm, connecting ejector pin under described diaphragm bolt, the described thimble the other end is connected with the screw of valve seat bearing, the edge of described valve seat bearing is connected with bearing nut, the described nut that presses contacts with bearing nut, the described nut that presses is arranged on valve inner, and thimble moves up and down according to pressure change, realizes bearing nut with gland nut contact or separates.Described valve gap bottom connects bonnet flange, between described bonnet flange and valve body, plastic diaphragm is set, and under described valve body, connects plug of valve body.
Adopt after such scheme, the utility model compared with prior art, has the following advantages: by plastic diaphragm is set, sensitiveer than metal diaphragm to stress reaction when low pressure (below 1MPa), the Pressure characteristics of reduction valve is improved, reduced outlet pressure deviation.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model;
In figure: 1-adjusting screw rod, 2-handle, 3-gland, 4-valve gap, 5-bonnet flange, 6-valve seat bearing, 7-valve body, 8-Regulation spring, 9-diaphragm bolt, 10-diaphragm compressing tablet, 11-plastic diaphragm, 12-thimble, 13-gland nut, 14-bearing nut, 15-plug of valve body, 16-suction port, 17-air outlet.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: referring to Fig. 1, a kind of large size plastic film reduction valve, comprises adjusting screw rod, described adjusting screw rod top connecting handle, described adjusting screw rod withstands on gland through valve gap bottom, under described gland, connects Regulation spring, and the other end of described Regulation spring withstands in diaphragm compressing tablet; Described diaphragm compressing tablet and diaphragm bolt clip plastic diaphragm, connecting ejector pin under described diaphragm bolt, the described thimble the other end is connected with the screw of valve seat bearing, the edge of described valve seat bearing is connected with bearing nut, the described nut that presses contacts with bearing nut, the described nut that presses is arranged on valve inner, and thimble moves up and down according to pressure change, realizes bearing nut with gland nut contact or separates.Described valve gap bottom connects bonnet flange, between described bonnet flange and valve body, plastic diaphragm is set, and under described valve body, connects plug of valve body.
When work, when rotation handle with sleeve, adjusting screw rod can produce a pressure to Regulation spring by gland, then plastic diaphragm is produced to a downforce; Gas enters from suction port, and go out air outlet, the reverse pressure that the pressure of air outlet is subject to diaphragm; Thimble, under plastic diaphragm effect, is realized bearing nut with gland nut contact or separates.
The utility model is mainly used in various gas pipelines, is applicable to the large various gas pipelines of flow of low pressure (1MPa is following).
Finally, it should be pointed out that above embodiment is only the more representational example of the utility model.Obviously, the utility model is not limited to above-described embodiment, can also have many distortion.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all should think and belong to protection domain of the present utility model.
Claims (2)
1. a large size plastic film reduction valve, comprise adjusting screw rod, it is characterized in that described adjusting screw rod top connecting handle, described adjusting screw rod withstands on gland through valve gap bottom, under described gland, connect Regulation spring, the other end of described Regulation spring withstands in diaphragm compressing tablet; Described diaphragm compressing tablet and diaphragm bolt clip plastic diaphragm, connecting ejector pin under described diaphragm bolt, the described thimble the other end is connected with the screw of valve seat bearing, the edge of described valve seat bearing is connected with bearing nut, the described nut that presses contacts with bearing nut, the described nut that presses is arranged on valve inner, and thimble moves up and down according to pressure change, realizes bearing nut with gland nut contact or separates.
2. a kind of large size plastic film reduction valve according to claim 1, is characterized in that described valve gap bottom connects bonnet flange, between described bonnet flange and valve body, plastic diaphragm is set, and under described valve body, connects plug of valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420097188.1U CN203718107U (en) | 2014-03-05 | 2014-03-05 | Pressure reducing valve adopting large-area plastic diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420097188.1U CN203718107U (en) | 2014-03-05 | 2014-03-05 | Pressure reducing valve adopting large-area plastic diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203718107U true CN203718107U (en) | 2014-07-16 |
Family
ID=51157258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420097188.1U Expired - Fee Related CN203718107U (en) | 2014-03-05 | 2014-03-05 | Pressure reducing valve adopting large-area plastic diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203718107U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003734A (en) * | 2015-06-24 | 2015-10-28 | 何小平 | Flow diversion pressure reducing valve |
-
2014
- 2014-03-05 CN CN201420097188.1U patent/CN203718107U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003734A (en) * | 2015-06-24 | 2015-10-28 | 何小平 | Flow diversion pressure reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20180305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |