CN203176466U - Undervoltage protection valve - Google Patents
Undervoltage protection valve Download PDFInfo
- Publication number
- CN203176466U CN203176466U CN 201320045191 CN201320045191U CN203176466U CN 203176466 U CN203176466 U CN 203176466U CN 201320045191 CN201320045191 CN 201320045191 CN 201320045191 U CN201320045191 U CN 201320045191U CN 203176466 U CN203176466 U CN 203176466U
- Authority
- CN
- China
- Prior art keywords
- outlet pipe
- water outlet
- spool
- valve element
- sidewall
- 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 provides an undervoltage protection valve which is used for limiting the water outlet pressure and guaranteeing that the water outlet pressure will not be too low. The undervoltage protection valve comprises a valve body, wherein a water inlet tube and a water outlet tube are arranged on the valve body. An adjusting valve element for adjusting flow is arranged on the water outlet tube, a function cavity is formed in the lateral portion of the water outlet tube, an expansion cavity, a pressure balance spring, a position controlling spring, a pulling rod and a protective valve element are communicated with the water outlet tube and arranged in the function cavity. One end of the protective valve element penetrates through the lateral wall of the water outlet tube to be inserted in the water outlet tube, and the other end of the protective valve element penetrates through the top wall of the function cavity to extend to the exterior of the function cavity. The lateral wall on one side of the expansion cavity is a rubber membrane, one end of the pulling rod is connected with the rubber membrane, the other end of the pulling rod abuts against the lateral wall of the protective valve element, and pits matched with the pulling rod are formed in the lateral wall of the protective valve element. One end of the pressure balance spring and the function cavity are fixed through a support, and the other end of the pressure balance spring abuts against the rubber membrane. The position controlling spring is sleeved on the protective valve element, one end of the position controlling spring is connected with the water outlet tube, and the other end of the position controlling spring is connected with a protrusion part arranged on the lateral wall of the protective valve element.
Description
Technical field
The utility model belongs to valve technology field, specially refers to a kind of under-voltage protection valve.
Background technique
Valve can be regulated the flow of water outlet, has purposes very widely.In some occasion (for example spray system), need the pressure of water outlet be limited, avoid discharge pressure to cross low and cause water outlet can not finish predetermined purpose, the waste water source, but traditional valve does not have under-voltage protection function.
The model utility content
The purpose of this utility model is to propose a kind of under-voltage protection valve, with the pressure of restriction water outlet, guarantees that discharge pressure can be not low excessively.
Under-voltage protection valve of the present utility model comprises valve body, described valve body is provided with intake pipe and outlet pipe, described outlet pipe is provided with the regulating spool of regulating flow, key is that the sidepiece of described outlet pipe is provided with a function chamber, be provided with the expansion chamber, pressure balance spring, control position spring, pull bar and the protection spool that communicate with outlet pipe in the described function chamber, one end of described protection spool passes the sidewall of outlet pipe and stretches in the outlet pipe, and the other end passes the roof in function chamber and stretches out outside the function chamber; One side sidewall of described expansion chamber is rubber membrane, and an end of described pull bar links to each other with rubber membrane, and the other end offsets with the sidewall of protection spool, and the sidewall of described protection spool is provided with the pit that cooperates with pull bar; One end of described pressure balance spring is fixed by support and function chamber, and the other end and rubber membrane offset; Described control position spring is placed on the Protective valve core, and an end of control position spring links to each other with outlet pipe, and the other end protuberance set with protecting the spool sidewall links to each other.
At first select suitable pressure balance spring, make when the outlet pipe pressure inside is higher than predetermined pressure, rubber membrane can not produce the movement towards the expansion chamber direction because of pressure balance spring.In use; at first with pulling moving protection spool; make the protection spool overcome the pulling force of control position spring and move along the direction perpendicular to outlet pipe; thereby the end that makes pull bar snaps in the pit of protection spool sidewall just; unclamp hand this moment; because pull bar snaps in the pit, the elastic force of control position spring can't make the protection spool move, so outlet pipe is held open state.
After the hydraulic pressure of outlet pipe reduces; pressure in the expansion chamber also can decrease; under the pressure effect of pressure balance spring; the rubber membrane of expansion chamber sidewall will produce the movement towards the expansion chamber direction; thereby the pulling pull bar after the hydraulic pressure of outlet pipe is lower than predetermined pressure (for example 1.5 barometric pressure), makes the end of pull bar deviate to protect the pit of spool sidewall just; protect this moment spool under the pulling force effect of control position spring, to move to the outlet pipe direction, thereby close outlet pipe.
Under-voltage protection valve of the present utility model arranges protection spool, pressure balance spring and expansion chamber by the outlet pipe place in conventional valves; can cross at discharge pressure and close outlet pipe when hanging down automatically; have easily manufactured, cost is low, control reliable advantage, has good practicability.
Description of drawings
Fig. 1 is the structural representation (outlet pipe unlatching) of under-voltage protection valve of the present utility model.
Fig. 2 is the structural representation (outlet pipe is closed) of under-voltage protection valve of the present utility model.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the effect of the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and working principle etc. are described in further detail.
Embodiment 1:
As shown in Figure 1, 2, the under-voltage protection valve of present embodiment comprises valve body 1, described valve body 1 is provided with intake pipe 2 and outlet pipe 3, described outlet pipe 3 is provided with the regulating spool 4 of regulating flow, key is that the sidepiece of described outlet pipe 3 is provided with a function chamber 5, be provided with the expansion chamber 6, pressure balance spring 7, control position spring 8, pull bar 9 and the protection spool 10 that communicate with outlet pipe 3 in the described function chamber 5, one end of described protection spool 10 passes the sidewall of outlet pipe 3 and stretches in the outlet pipe 3, and the other end passes the roof in function chamber 5 and stretches out outside the function chamber 5; One side sidewall of described expansion chamber 6 is rubber membrane 11, and an end of described pull bar 9 links to each other with rubber membrane 11, and the other end offsets with the sidewall of protection spool 10, and the sidewall of described protection spool 10 is provided with the pit 12 that cooperates with pull bar 9; One end of described pressure balance spring 7 is fixing with function chamber 5 by support 13, and the other end and rubber membrane 11 offset; Described control position spring 8 is placed on the protection spool 10, and an end of control position spring 8 links to each other with outlet pipe 3, and the other end protuberance 14 set with protecting spool 10 sidewalls links to each other.
As shown in Figure 1, at first select suitable pressure balance spring 7, make when outlet pipe 3 pressure inside are higher than predetermined pressure, rubber membrane 11 can not produce the movement towards expansion chamber 6 directions because of pressure balance spring 7.In use; at first with pulling moving protection spool 10; make protection spool 10 overcome the pulling force of control position spring 8 and move along the direction perpendicular to outlet pipe 3; thereby the end that makes pull bar 9 snaps in the pit 12 of protection spool 10 sidewalls just; unclamp hand this moment; because pull bar 9 snaps in the pit 12, the elastic force of control position spring 8 can't make protection spool 10 move, so outlet pipe 3 is held open state.
As shown in Figure 2; after the hydraulic pressure of outlet pipe 3 reduces; pressure in the expansion chamber 6 also can decrease; under the pressure effect of pressure balance spring 7; the rubber membrane 11 of expansion chamber 6 sidewalls will produce the movement towards expansion chamber 6 directions; thereby pulling pull bar 9; after the hydraulic pressure of outlet pipe 3 is lower than predetermined pressure (for example 1.5 barometric pressure); just make the end of pull bar 9 deviate to protect the pit 12 of spool 10 sidewalls; protect this moment spool 10 under the pulling force effect of control position spring 8, to move to outlet pipe 3 directions, thereby close outlet pipe 3.
Claims (1)
1. under-voltage protection valve, comprise valve body, described valve body is provided with intake pipe and outlet pipe, described outlet pipe is provided with the regulating spool of regulating flow, the sidepiece that it is characterized in that described outlet pipe is provided with a function chamber, be provided with the expansion chamber, pressure balance spring, control position spring, pull bar and the protection spool that communicate with outlet pipe in the described function chamber, an end of described protection spool passes the sidewall of outlet pipe and stretches in the outlet pipe, and the other end passes the roof in function chamber and stretches out outside the function chamber; One side sidewall of described expansion chamber is rubber membrane, and an end of described pull bar links to each other with rubber membrane, and the other end offsets with the sidewall of protection spool, and the sidewall of described protection spool is provided with the pit that cooperates with pull bar; One end of described pressure balance spring is fixed by support and function chamber, and the other end and rubber membrane offset; Described control position spring is placed on the Protective valve core, and an end of control position spring links to each other with outlet pipe, and the other end protuberance set with protecting the spool sidewall links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320045191 CN203176466U (en) | 2013-01-28 | 2013-01-28 | Undervoltage protection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320045191 CN203176466U (en) | 2013-01-28 | 2013-01-28 | Undervoltage protection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203176466U true CN203176466U (en) | 2013-09-04 |
Family
ID=49073163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320045191 Expired - Fee Related CN203176466U (en) | 2013-01-28 | 2013-01-28 | Undervoltage protection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203176466U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075550A (en) * | 2013-01-28 | 2013-05-01 | 苏州宇东暖通技术有限公司 | Under-voltage protective valve |
-
2013
- 2013-01-28 CN CN 201320045191 patent/CN203176466U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075550A (en) * | 2013-01-28 | 2013-05-01 | 苏州宇东暖通技术有限公司 | Under-voltage protective valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20140128 |