CN103075550A - Under-voltage protective valve - Google Patents
Under-voltage protective valve Download PDFInfo
- Publication number
- CN103075550A CN103075550A CN2013100315933A CN201310031593A CN103075550A CN 103075550 A CN103075550 A CN 103075550A CN 2013100315933 A CN2013100315933 A CN 2013100315933A CN 201310031593 A CN201310031593 A CN 201310031593A CN 103075550 A CN103075550 A CN 103075550A
- Authority
- CN
- China
- Prior art keywords
- outlet pipe
- protective valve
- spool
- valve core
- water outlet
- 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.)
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Abstract
The invention provides an under-voltage protective valve, aiming to limit the pressure of out-flowing water so as to ensure the pressure of out-flowing water not to be over low. The under-voltage protective valve comprises a valve body, which is provided with a water inlet pipe and a water outlet pipe, wherein the water outlet pipe is provided with a regulating valve core for regulating flow, a functional cavity is arranged on a side part of the water outlet pipe, an expansion cavity, a pressure balance spring, a station-keeping spring, a pulling rod and a protective valve core which are communicated with the water outlet pipe are arranged in the functional cavity, one end of the protective valve core passes through a side wall of the water outlet pipe to extend into the water outlet pipe, and the other end of the protective valve core passes through a top wall of the functional cavity to extend out of the functional cavity; the side wall on one side of the expansion cavity is rubber film, one end of the pulling rod is connected with rubber film, the other end of the pulling rod is resisted to the side wall of the protective valve core, and a concave hole which is matched with the pulling rod is arranged on the side wall of the protective valve core; one end of the pressure balance spring is fixed with the functional cavity through a support, and the other end of the pressure balance spring is resisted to the rubber film; and the station-keeping spring is sleeved on the protective valve core, one end of the station-keeping spring is connected with the water outlet pipe, and the other end of the station-keeping spring is connected with a protruding part arranged on the side wall of the protective valve core.
Description
Technical field
The invention belongs to valve technology field, specially refer to a kind of under-voltage protection valve.
Background technique
Valve can adjusting water outlet flow, have very widely purposes.In some occasion (for example spray system), need to 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.
Summary of the invention
The objective of the invention is to propose a kind of under-voltage protection valve, with the pressure of restriction water outlet, guarantee that discharge pressure can be excessively not low.
Under-voltage protection valve of the present invention comprises valve body, described valve body is provided with intake pipe and outlet pipe, described outlet pipe is provided with the regulating spool of adjust flux, 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, so that the pressure of outlet pipe inside is when being higher than predetermined pressure, rubber membrane can not produce because of pressure balance spring the movement towards the expansion chamber direction.In use; at first pull with hand the 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-acting 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 invention arranges protection spool, pressure balance spring and expansion chamber by the outlet pipe place in conventional valves; can cross autoshutdown outlet pipe when low at discharge pressure; 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 invention.
Fig. 2 is the structural representation (outlet pipe is closed) of under-voltage protection valve of the present invention.
Embodiment
The below contrasts accompanying drawing, by the description to embodiment, the effect of the mutual alignment between the shape of the specific embodiment of the present invention 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 the 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 adjust flux, 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, so that the pressure of outlet pipe 3 inside is when being higher than predetermined pressure, rubber membrane 11 can not produce because of pressure balance spring 7 movement towards expansion chamber 6 directions.In use; at first pull with hand 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-acting 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 adjust flux, 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 |
|---|---|---|---|
| CN2013100315933A CN103075550A (en) | 2013-01-28 | 2013-01-28 | Under-voltage protective valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100315933A CN103075550A (en) | 2013-01-28 | 2013-01-28 | Under-voltage protective valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103075550A true CN103075550A (en) | 2013-05-01 |
Family
ID=48152188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100315933A Pending CN103075550A (en) | 2013-01-28 | 2013-01-28 | Under-voltage protective valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103075550A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1726882A1 (en) * | 1990-03-23 | 1992-04-15 | Государственный научно-исследовательский и проектный институт "ГипроНИИгаз" | Safety dump valve |
| CN2705678Y (en) * | 2004-04-24 | 2005-06-22 | 麦广海 | Air sac type pressure reducing constant pressure valve |
| CN1959167A (en) * | 2006-09-13 | 2007-05-09 | 杨克庆 | Safety structure of l pressure-reducing valve |
| CN203176466U (en) * | 2013-01-28 | 2013-09-04 | 苏州宇东暖通技术有限公司 | Undervoltage protection valve |
-
2013
- 2013-01-28 CN CN2013100315933A patent/CN103075550A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1726882A1 (en) * | 1990-03-23 | 1992-04-15 | Государственный научно-исследовательский и проектный институт "ГипроНИИгаз" | Safety dump valve |
| CN2705678Y (en) * | 2004-04-24 | 2005-06-22 | 麦广海 | Air sac type pressure reducing constant pressure valve |
| CN1959167A (en) * | 2006-09-13 | 2007-05-09 | 杨克庆 | Safety structure of l pressure-reducing valve |
| CN203176466U (en) * | 2013-01-28 | 2013-09-04 | 苏州宇东暖通技术有限公司 | Undervoltage protection valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130501 |