CN203322421U - Diaphragm-type balance valve - Google Patents
Diaphragm-type balance valve Download PDFInfo
- Publication number
- CN203322421U CN203322421U CN2013203338379U CN201320333837U CN203322421U CN 203322421 U CN203322421 U CN 203322421U CN 2013203338379 U CN2013203338379 U CN 2013203338379U CN 201320333837 U CN201320333837 U CN 201320333837U CN 203322421 U CN203322421 U CN 203322421U
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- Prior art keywords
- diaphragm
- valve body
- cavity
- valve
- piston
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Abstract
The utility model relates to a diaphragm-type balance valve, which belongs to the technical field of machinery. The diaphragm-type balance valve comprises a balance vale body consisting of a valve deck and a valve body, wherein a diaphragm regulation mechanism is arranged in the valve body; the balance valve body is isolated by the diaphragm regulation mechanism to form an upper diaphragm cavity and a lower diaphragm cavity; the valve deck is provided with an upper cavity pressure conduction hole communicated with the upper diaphragm cavity; the valve body is provided with a lower cavity pressure conduction hole communicated with the lower diaphragm cavity; the diaphragm regulation mechanism consists of a pore plate, a diaphragm sheet, a valve plug, a central spindle and a piston, wherein the pore plate, the diaphragm sheet, the valve plug, the central spindle and the piston are sequentially fixed by a screw; two ends of the screw are locked by locking nuts. When the diaphragm-type balance valve disclosed by the utility model is used, the resonance phenomenon is avoided, and foam flow can be protected from turbulence.
Description
Technical field
The utility model relates to a kind of diaphragm type balanced valves, belongs to field of mechanical technique.
Background technique
Along with the fast development of petrochemical industry, the demand of the balanced type proportion mixing device in foam extinguishing system is increasing.Yet the design of the key components equilibrium valve in balanced type proportion mixing device is very crucial; Equilibrium valve is of a great variety in the market, is greatly to have adopted the equilibrium valve in the series of valves; But such equilibrium valve major part has all designed spring structure, this equilibrium valve is easy to occur resonance phenomenon under the normal work of device and flow, and the flow of foam solution is got muddled, and causes the proportions of ingredients of foam mixing liquid inaccurate.The equilibrium valve that not there will be resonance phenomenon while therefore, needing a kind of use of exploitation, can not cause the flow of foam solution to get muddled.
Summary of the invention
The purpose of this utility model is to solve the deficiencies in the prior art, and a kind of diaphragm type balanced valves is provided, and this diaphragm type balanced valves not there will be resonance phenomenon while using, and can not cause the foam flow to get muddled.
The utility model solves the technological scheme that its technical problem adopts:
Diaphragm type balanced valves, comprise the equilibrium valve body formed by valve gap and valve body, be provided with the diaphragm controlling mechanism in described valve body, described diaphragm controlling mechanism forms upper diaphragm cavity and lower diaphragm plate chamber by the isolation of equilibrium valve body, described valve gap is provided with the epicoele pilot port be communicated with upper diaphragm cavity, and described valve body is provided with the cavity of resorption pilot port be communicated with the lower diaphragm plate chamber.
As preferably, described diaphragm controlling mechanism consists of orifice plate, diaphragm, spool, axle core and piston, and described orifice plate, diaphragm, orifice plate, spool, axle core and piston are fixed by screw rod successively, and lock by locking nut at the two ends of screw rod.
As preferably, be provided with seal ring between axle core and spool, be provided with seal ring between spool and valve body.
As preferably, described diaphragm adopts nitrile butadiene rubber to make.
As preferably, between described piston and axle core and between piston and locking nut, be provided with compression spring.
The beneficial effects of the utility model are: the utility model is by the pressure differential diaphragm controlling mechanism motion of epicoele pilot port and cavity of resorption pilot port, then be with movable valve plug and piston movement, thereby change the circulation area of valve body, realize the effect of adjust flux, not there will be resonance phenomenon during use, can not cause the foam flow to get muddled.
The accompanying drawing explanation
Fig. 1 is sectional view of the present utility model.
In figure: 1, valve gap, 2, valve body, 3, the epicoele pilot port, 4, the cavity of resorption pilot port, 5, orifice plate, 6, diaphragm, 7, spool, 8, the axle core, 9, piston, 10, locking nut.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
A kind of diaphragm type balanced valves as shown in Figure 1, comprise the equilibrium valve body formed by valve gap 1 and valve body 2, be equipped with the diaphragm controlling mechanism in described valve body 2, described diaphragm controlling mechanism is by orifice plate 5, diaphragm 6, spool 7, axle core 8 and piston 9 form, wherein diaphragm 6 adopts nitrile butadiene rubber to make, described orifice plate 5, diaphragm 6, orifice plate 5, spool 7, axle core 8 and piston 9 are fixed by screw rod successively, the two ends of screw rod are by locking nut 10 lockings, between axle core 8 and spool 7, seal ring is installed, between spool 7 and valve body 2, seal ring is installed, be equipped with compression spring between described piston 9 and axle core 8 and between piston 9 and locking nut 10, described diaphragm controlling mechanism forms upper diaphragm cavity and lower diaphragm plate chamber by the isolation of equilibrium valve body, described valve gap 1 is provided with the epicoele pilot port 3 be communicated with upper diaphragm cavity, described valve body 2 is provided with the cavity of resorption pilot port 4 be communicated with the lower diaphragm plate chamber.
Working principle of the present utility model is: foam solution is after foam pump output, and a part enters fire-fighting water main road, is mixed into the foam mixing liquid of fire extinguishing use; Unnecessary foam solution turns back to concentrated tank by diaphragm type balanced valves in addition.The epicoele pilot port 3 arranged on the valve gap 1 of diaphragm type balanced valves is connected with fire-prevention pipe by pipeline, and the fire-prevention pipe internal pressure is designated as P
1The cavity of resorption pilot port 4 of valve body 2 is connected with the foam pump outlet by pipeline, and the foam pump outlet pressure is designated as P
2, work as P
1=P
2The time, the piston 9 of diaphragm type balanced valves is in the closed position; Work as P
2>P
1The time, the diaphragm controlling mechanism can be at P
2Promotion under move up, drive pistons 9 by axle core 8 and move up and open valve body 2, unnecessary foam solution turns back in foam tank by the valve body 2 of opening; Due to after unnecessary foam solution turns back in foam tank, P
2Pressure can reduce with the unlatching of valve body 2, be now P
1>P
2, the diaphragm controlling mechanism can be at P
1Promotion under move down, drive by axle core 8 that pistons 9 move down and valve body, at this moment P
2Can raise until and P rapidly
1Balance.Motion repeatedly by the diaphragm controlling mechanism makes P
1, P
2Reach a kind of transient equiliblium (P
1=P
2), thereby guaranteed the accurate of foam solution flow, then guaranteed the proportions of ingredients of the foam solution of fire-fighting water-bath accurately.
Above-described embodiment is a kind of preferably scheme of the present utility model, not the utility model is done to any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technological scheme that claim puts down in writing.
Claims (5)
1. diaphragm type balanced valves, comprise the equilibrium valve body formed by valve gap (1) and valve body (2), it is characterized in that: described valve body is provided with the diaphragm controlling mechanism in (2), described diaphragm controlling mechanism forms upper diaphragm cavity and lower diaphragm plate chamber by the isolation of equilibrium valve body, described valve gap (2) is provided with the epicoele pilot port (3) be communicated with upper diaphragm cavity, and described valve body (2) is provided with the cavity of resorption pilot port (4) be communicated with the lower diaphragm plate chamber.
2. diaphragm type balanced valves according to claim 1, it is characterized in that: described diaphragm controlling mechanism consists of orifice plate (5), diaphragm (6), spool (7), axle core (8) and piston (9), described orifice plate (5), diaphragm (6), orifice plate (5), spool (7), axle core (8) and piston (9) are fixed by screw rod successively, and the two ends of screw rod are by locking nut (10) locking.
3. diaphragm type balanced valves according to claim 2, is characterized in that: be provided with seal ring between axle core (8) and spool (7), between spool (7) and valve body (2), be provided with seal ring.
4. according to the described diaphragm type balanced valves of claim 2 or 3, it is characterized in that: described diaphragm (6) adopts nitrile butadiene rubber to make.
5. according to the described diaphragm type balanced valves of claim 2 or 3, it is characterized in that: between described piston (9) and axle core (8) and between piston (9) and locking nut (10), be provided with compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203338379U CN203322421U (en) | 2013-06-09 | 2013-06-09 | Diaphragm-type balance valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203338379U CN203322421U (en) | 2013-06-09 | 2013-06-09 | Diaphragm-type balance valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203322421U true CN203322421U (en) | 2013-12-04 |
Family
ID=49661773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203338379U Expired - Lifetime CN203322421U (en) | 2013-06-09 | 2013-06-09 | Diaphragm-type balance valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203322421U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043217A (en) * | 2014-06-04 | 2014-09-17 | 上海金盾消防安全科技有限公司 | Dynamic balance pressure proportioning mixer |
| CN105020449A (en) * | 2014-04-24 | 2015-11-04 | 西门子瑞士有限公司 | Pressure independent control valve |
| CN108167490A (en) * | 2017-12-28 | 2018-06-15 | 天津市仕联能源科技有限公司 | A kind of resistance to compression balanced valve |
-
2013
- 2013-06-09 CN CN2013203338379U patent/CN203322421U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020449A (en) * | 2014-04-24 | 2015-11-04 | 西门子瑞士有限公司 | Pressure independent control valve |
| CN104043217A (en) * | 2014-06-04 | 2014-09-17 | 上海金盾消防安全科技有限公司 | Dynamic balance pressure proportioning mixer |
| CN108167490A (en) * | 2017-12-28 | 2018-06-15 | 天津市仕联能源科技有限公司 | A kind of resistance to compression balanced valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |