CN205136713U - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN205136713U CN205136713U CN201520984816.2U CN201520984816U CN205136713U CN 205136713 U CN205136713 U CN 205136713U CN 201520984816 U CN201520984816 U CN 201520984816U CN 205136713 U CN205136713 U CN 205136713U
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- China
- Prior art keywords
- valve plug
- valve
- flow path
- head piece
- safety valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a safety valve, valve body and portable setting including having airflow channel are in being used for in the valve body is controlled the valve plug of airflow channel break -make, airflow channel is down " L " shape, the corner of being close to the air inlet end in the airflow channel was equipped with the head piece, under the normality the valve plug seals under self action of gravity cross the head piece, in order to cut off airflow channel, the valve plug bottom is equipped with and is suitable for the shutoff cross the sealed face of head piece. The utility model discloses a safety valve structure is simplified rationally, convenient assembling to has fine result of use.
Description
Technical field
The utility model belongs to safety valve, belongs to valve mechanism design field.
Background technique
Safety valve is in normally off under open-shut device is subject to External Force Acting, when the pressure medium in equipment or pipeline increases to over specified value, exceedes the Special valve of specified value by preventing pressure medium in pipeline or equipment to discharge medium outside system.Safety valve is suitable for self-acting valve class, and be mainly used on boiler, pressure vessels and pipes, pilot pressure is no more than specified value, runs play an important role to personal safety and equipment.
A kind of safety valve on existing market, comprise valve body, plastics valve plug and spring, described plastics valve plug and described spring fitting are in described valve body, described spring provides elastic force that safety valve is closed under normal conditions for described valve plug, this safety valve in use, when air pressure is greater than spring force, valve plug washed open thus open air-flow path, release pressure.The defect of this safety is, uses a period of time rear spring elastic force to weaken, will overcome spring pressure and be opened by air-flow path, affect the using effect of safety valve when this just causes valve body internal pressure value also not reach preset pressure value.
Model utility content
To this, the purpose of this utility model is to provide the rational safety valve of a kind of designs simplification.
The technological scheme realizing the utility model object is:
A kind of safety valve, comprise the valve body with air-flow path and the valve plug for controlling described air-flow path break-make be removably set in described valve body, described air-flow path is inverted "L" shaped, corner near suction port end in described air-flow path was provided with head piece, under normality, described valve plug closes described head piece excessively under self gravitation effect, and described valve plug bottom is provided with and is suitable for crossing head piece described in shutoff to cut off the sealing surface of described air-flow path.
In technique scheme, described sealing surface is conical surface, and described valve plug forms annular bearing groove above described sealing surface.
In technique scheme, the end face of described annular bearing groove is perpendicular to described valve plug perpendicular bisector.
In technique scheme, described valve body top is provided with the mount inlet being suitable for loading described valve plug, and described mount inlet outside is furnished with end cap; Described mount inlet outside is provided with outside thread, and described cover internal forms the internal thread being suitable for coordinating with described outside thread.
The utility model has positive effect:
(1), in safety valve of the present utility model, rely on valve plug self gravitation closed gas flow passage, without the need to arranging Returnning spring, simplifying product structure, assembling convenient, there is good using effect.(2) in the utility model, arranging described sealing surface is conical surface, valve plug can be beneficial to well coordinate with mistake head piece in the process fallen, sealing effect is better, open to be beneficial to valve plug simultaneously, also on valve plug, be provided with annular bearing groove, when such valve plug is opened, portion gas can enter in annular bearing groove to produce valve plug and upward pressure, and valve plug can be impelled to open.(3) in the utility model, arranging the perpendicular bisector of end face perpendicular to valve plug of described annular bearing groove, is the pressure produced in annular bearing groove to increase air pressure, thus is more beneficial to valve plug and opens.
Accompanying drawing explanation
Fig. 1 is the sectional view of safety valve in the utility model;
Fig. 2 is in the utility model safety valve, the structural representation of valve plug.
Reference character shown in figure is: 1-valve body; 11-air-flow path; 12-suction port end; 13-crosses head piece; 14-mount inlet; 2-valve plug; 21-sealing surface; 22-annular bearing groove; 3-end cap.
Embodiment
Do to illustrate below in conjunction with the structure of Figure of description to safety valve of the present utility model:
A kind of safety valve, as shown in Figure 1, it comprises the valve body 1 with air-flow path 11 and the valve plug 2 for controlling described air-flow path 11 break-make be removably set in described valve body 1, described air-flow path 11 is in inverted "L" shaped, corner near suction port end 12 in described air-flow path 11 was provided with head piece 13, under normality, described valve plug 2 closes described head piece 13 excessively under self gravitation effect, and described valve plug 2 bottom is provided with and is suitable for crossing head piece 13 described in shutoff to cut off the sealing surface 21 of described air-flow path 11.In the present embodiment safety valve, rely on valve plug 2 self gravitation closed gas flow passage, without the need to arranging Returnning spring, simplifying product structure, assembling convenient, there is good using effect.Because valve plug 2 needs to hold one's breath in self gravitation effect ShiShimonoseki circulation road 11, therefore valve plug 2 must have enough weight, adopts metal material best, makes as adopted the material such as stainless steel, stainless iron.In use, when atmospheric pressure value is greater than preset pressure value (i.e. valve plug 2 weight), valve plug 2 jack-up is opened air-flow path 11, when air pressure is less than preset pressure value, described valve plug 2 is at self gravitation falls downward and closed head piece 13, cut off air-flow path 11, airflow direction is as arrow indication in Fig. 1.
Referring to Fig. 2, the described sealing surface 21 in the present embodiment is conical surface, and described valve plug 2 forms annular bearing groove 22 above described sealing surface 21.In the present embodiment, arranging described sealing surface 21 is conical surface, valve plug 2 can be beneficial to well coordinate with mistake head piece 13 in the process fallen, sealing effect is better, open to be beneficial to valve plug 2 simultaneously, also on valve plug 2, be provided with annular bearing groove 22, when such valve plug 2 is opened, portion gas can enter in annular bearing groove 22 to produce valve plug 2 and upward pressure, and impels valve plug 2 to open.
Further in order to increase the upward pressure in annular bearing groove 22 described in valve plug 2 opening procedure, the end face of described annular bearing groove 22 and stress surface are set in the present embodiment perpendicular to described valve plug 2 perpendicular bisector.
In the present embodiment, described valve body 1 top is provided with mount inlet 14, loads in valve body 1 when assembled product by valve plug 2 from this mount inlet 14, and described mount inlet 14 outside is furnished with end cap 3; Described mount inlet 14 outside is provided with outside thread, and described end cap 3 inside forms the internal thread being suitable for coordinating with described outside thread.
Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to mode of execution of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And these belong to connotation of the present utility model the apparent change of extending out or variation still belong to protection domain of the present utility model.
Claims (4)
1. a safety valve, comprise the valve body (1) with air-flow path (11) and the valve plug (2) for controlling described air-flow path (11) break-make be removably set in described valve body (1), described air-flow path (11) is in inverted "L" shaped, corner near suction port end (12) in described air-flow path (11) was provided with head piece (13), under normality, described valve plug (2) closes described head piece (13) excessively under self gravitation effect, to cut off described air-flow path (11), described valve plug (2) bottom is provided with the sealing surface (21) being suitable for crossing head piece (13) described in shutoff.
2. safety valve according to claim 1, is characterized in that, described sealing surface (21) is conical surface, and described valve plug (2) forms annular bearing groove (22) in the top of described sealing surface (21).
3. safety valve according to claim 2, is characterized in that, the end face of described annular bearing groove (22) is perpendicular to described valve plug (2) perpendicular bisector.
4. safety valve according to claim 3, it is characterized in that, described valve body (1) top is provided with the mount inlet (14) being suitable for loading described valve plug (2), and described mount inlet (14) outside is furnished with end cap (3); Described mount inlet (14) outside is provided with outside thread, and described end cap (3) inside forms the internal thread being suitable for coordinating with described outside thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520984816.2U CN205136713U (en) | 2015-12-02 | 2015-12-02 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520984816.2U CN205136713U (en) | 2015-12-02 | 2015-12-02 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205136713U true CN205136713U (en) | 2016-04-06 |
Family
ID=55622508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520984816.2U Active CN205136713U (en) | 2015-12-02 | 2015-12-02 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205136713U (en) |
-
2015
- 2015-12-02 CN CN201520984816.2U patent/CN205136713U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181023 Address after: 511450 B6 first, second, Huachang Animation Industrial Park, 9 Huachen Road, Shiji Town, Panyu District, Guangzhou, Guangdong. Patentee after: Guangzhou Helong Intelligent Equipment Co., Ltd. Address before: 325600 Third Floor, 477 Jingqi Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province (Helong Explosion-proof Electric Co., Ltd.) Patentee before: ZHEJIANG HELONG ENERGY SAVING TECHNOLOGY CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211015 Address after: 325600 Weiba Road, Yueqing Economic Development Zone, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: Zhejiang Helong Intelligent Equipment Co.,Ltd. Address before: 511450 B6 first, second, Huachang Animation Industrial Park, 9 Huachen Road, Shiji Town, Panyu District, Guangzhou, Guangdong. Patentee before: Guangzhou Helong Intelligent Equipment Co.,Ltd. |
|
| TR01 | Transfer of patent right |