CN203476714U - Backflow pressure relief valve - Google Patents
Backflow pressure relief valve Download PDFInfo
- Publication number
- CN203476714U CN203476714U CN201320531119.2U CN201320531119U CN203476714U CN 203476714 U CN203476714 U CN 203476714U CN 201320531119 U CN201320531119 U CN 201320531119U CN 203476714 U CN203476714 U CN 203476714U
- Authority
- CN
- China
- Prior art keywords
- valve body
- relief valve
- pressure relief
- pressure release
- release valve
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a backflow pressure relief valve which comprises a pressure relief valve body and an elbow, wherein the bottom and the top of the pressure relief valve body are respectively provided with a gas inlet and a gas outlet; the top of the pressure relief valve body is connected with the elbow by a pipe threaded joint. According to the backflow pressure relief valve provided by the utility model, due to the improvement of the structure, exhausted gas can be collected and then is returned back into an air inlet of a fan again, so that the gas leakage is not caused. The backflow pressure relief valve is especially suitable for the industry for conveying special gas, and the service safety performance is greatly improved.
Description
Technical field
The utility model relates to air venting valve field, especially a kind of roots blower backflow Decompression valves that is applicable to special gas.
Background technique
Traditional Decompression valves exhaust port is on the outer wall of Decompression valves, and gas directly enters gas in air by outer wall upper air-vent, and as shown in Figure 4, this exhaust mode is feasible in common industrial production.But in some special industries, especially utilize roots blower to carry in toxic gas process, the gas that Decompression valves place discharges is outer row directly, must collect, common Decompression valves does not have the function of collecting pressure release gas, has no at present as good collection mode.
Model utility content
The utility model provides a kind of safety return-flow Decompression valves, simple in structure, easy to manufacture, can be used for the backflow of special gas blower fan, meets the needs of carrying special gas.
The technical scheme in the invention for solving the technical problem is: a kind of backflow Decompression valves, comprise pressure release valve body and elbow, it is characterized in that, bottom and top at described pressure release valve body are respectively suction port and relief opening, and described pressure release valve body top is by the removable elbow of pipe thread connection one.
The cavity that described pressure release valve body is comprised of upper-lower casing, described lower shell body is provided with the suction port being connected with fan air channel, at the top of described upper shell, be provided with some relief openings, and at upper shell top, be provided with an inside and outside tapped hole connecting, one adjusting bolt is arranged in tapped hole, in the inside of described pressure release valve body, be provided with a hexagonal spool, a spring is nested with in adjusting bolt and by spool and is pressed together on suction port place.
On the described spool coordinating with suction port, embed an elastic sealed body.
The beneficial effects of the utility model are: the utility model provides a kind of backflow Decompression valves, improvement by structure can be collected the gas of discharge, and then return the intake grill be discharged to blower fan, so just can not cause leaking outside of gas, be particularly useful for carrying in the industry of special gas, greatly improved the Safety performance of using.
Accompanying drawing explanation
Fig. 1 is whole-cutaway view of the present utility model;
Fig. 2 is another phase diagram of Fig. 1;
Fig. 3 is the plan view of pressure release valve body;
Fig. 4 is the whole-cutaway view of common Decompression valves;
In figure: 11 upper shells, 12 lower shell bodys, 13 spools, 14 springs, 15 adjusting bolts, 16 suction ports, 17 relief openings, 18 elastic sealed bodies, 2 elbows.
Embodiment
As shown in Figure 1 to Figure 3,
A backflow Decompression valves, comprises pressure release valve body and the large parts of elbow two.
Elbow 2 is used existing hardware for water pipe, the present embodiment select for spending elbows in two tapped 90.
Pressure release valve body comprises upper shell 11, lower shell body 12, spool 13, spring 14 and adjusting bolt 15, and upper-lower casing is wherein threaded connection and forms an integral body, and inner for the cavity of spool 13 is installed, spool can slide up and down.Lower shell body is provided with the suction port 16 being connected with fan air channel, is threaded pipe pattern, is provided with some relief openings 17 at the top of described upper shell, as shown in Figure 3, and be provided with an inside and outside tapped hole connecting at upper shell top, an adjusting bolt 15 is arranged in tapped hole, can swivel feeding motion.
Pretightening force that can Regulation spring by rotation adjusting bolt, and then regulate the pressure of pressure release.
Pressure release valve body top is coordinated with elbow 2 and is connected by pipe thread, and the elbow the other end is interior threaded hole, for being connected with pipeline.
The utility model is by relief opening design at the top of valve body, and the opposite side of elbow is connected with the air inlet system of blower fan by water pipe, thereby form, refluxes, and the poisonous special gas that waits is collected, and this safety return-flow Decompression valves is applicable to special gas blower fan.
Except the technical characteristics described in specification, be the known technology of those skilled in the art.
Claims (3)
1. a backflow Decompression valves, comprises pressure release valve body and elbow, it is characterized in that, at bottom and the top of described pressure release valve body, is respectively suction port and relief opening, and described pressure release valve body top is threaded connection installation one removable elbow.
2. backflow Decompression valves according to claim 1, it is characterized in that, the cavity that described pressure release valve body is comprised of upper-lower casing, described lower shell body is provided with the suction port being connected with fan air channel, at the top of described upper shell, be provided with some relief openings, and at upper shell top, be provided with an inside and outside tapped hole connecting, an adjusting bolt is arranged in tapped hole, in the inside of described pressure release valve body, be provided with a hexagonal spool, a spring is nested with in adjusting bolt and by spool and is pressed together on suction port place.
3. backflow Decompression valves according to claim 2, is characterized in that, on the described spool coordinating with suction port, embeds an elastic sealed body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320531119.2U CN203476714U (en) | 2013-08-28 | 2013-08-28 | Backflow pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320531119.2U CN203476714U (en) | 2013-08-28 | 2013-08-28 | Backflow pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203476714U true CN203476714U (en) | 2014-03-12 |
Family
ID=50225053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320531119.2U Expired - Fee Related CN203476714U (en) | 2013-08-28 | 2013-08-28 | Backflow pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203476714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410737A (en) * | 2013-08-28 | 2013-11-27 | 山东明天机械有限公司 | Reflux pressure relief valve |
-
2013
- 2013-08-28 CN CN201320531119.2U patent/CN203476714U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410737A (en) * | 2013-08-28 | 2013-11-27 | 山东明天机械有限公司 | Reflux pressure relief valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20190828 |