CN2337367Y - Self-operated flow control valve - Google Patents
Self-operated flow control valve Download PDFInfo
- Publication number
- CN2337367Y CN2337367Y CN 98205203 CN98205203U CN2337367Y CN 2337367 Y CN2337367 Y CN 2337367Y CN 98205203 CN98205203 CN 98205203 CN 98205203 U CN98205203 U CN 98205203U CN 2337367 Y CN2337367 Y CN 2337367Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- diaphragm
- utility
- self
- 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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- Fluid-Driven Valves (AREA)
Abstract
The utility model relates to a self-operated flow control valve used for controlling the liquid or gas medium flow rate in a water supply, or a refrigeration, or a heat supply or a power source system. The utility model is composed of a valve body, an upper cover and a capsule. The left cavity of the valve body is provided with an automatic valve stem with an automatic valve core, and a diaphragm is arranged between the valve body and the capsule. The lower end of the automatic valve stem is connected with the diaphragm, and a spring is supported under the diaphragm. The right cavity of the valve body is provided with a manual valve stem connected with a manual valve core, and the end of the manual valve stem extending out of a plug cover is provided with a scale. The utility model has the advantages of novel design, compact structure, convenient regulation, can keep the flow rate constant and set the flow rate, with energy saved.
Description
The utility model relates to a kind of self-operated flow control valve that is used for controlling water supply, refrigeration, heat supply or power energy system liquid or gas medium flow.
Along with the continuous increase of City Building and the adjustment of scope of the enterprise, produced the problem of the uneven permanent or cutout of fluid flow in water supply, refrigeration or the heating system, influenced industrial production and resident's life.
The purpose of this utility model is that a kind of self-operated flow control valve will be provided, and it can control the constant flow rate of fluid in water supply, refrigeration or the heating system effectively, realizes the reasonable distribution and the weight feed of flow, has saved the energy.
The purpose of this utility model is achieved in that a kind of self-operated flow control valve, comprise by valve body, loam cake and bellows and constituting, it mainly is the automatic valve rod that is provided with in the chamber, a valve body left side with automatic spool, be provided with diaphragm between valve body and the bellows, automatically the valve rod lower end is being connected with diaphragm, be provided with spring below the diaphragm and withstand, valve body is provided with the manual opening stem that movable valve plug is set about in connection in the right chamber, and manual opening stem stretches out the outer end of gag and is provided with scale.Its working principle is: inlet pressure is P
1Working fluid flow through that pressure becomes P behind automatic spool and the valve rod
2, under behind manual regulating spool, entering again during the film chamber pressure be P
3, its pressure reduction is P
2-P
3, the flow behind the manually operated valve of flowing through is G=KV
, after the set positions of manual modulation valve, its sectional area is constant, K
vBe definite value, work as P
2-P
3When constant, then flow G is just constant, and the double spool position of automatic regulating valve is subjected to P
2With P
3Pressure difference control, its sectional area of spool and valve base chamber changes thereupon, resets the negotiability of automatic regulating valve and P as the position of manual modulation valve
1-P
2Pressure reduction also change.As working fluid pressure P
1During increase, the flow of the instantaneous automatic regulating valve of flowing through increases, pressure P
2Also will improve, at this moment P
2-P
3Pressure reduction increases, and has destroyed original balance, and the automatic regulating valve core is moved to the valve seat direction, reduces cross section of fluid channel, increases resistance, makes P
2-P
3Pressure difference returns to original value again, has guaranteed that flow G is constant, otherwise in like manner.
The utility model modern design, compact structure, easy to adjust, but constant flow rate and setting flow do not need additional equipment, have saved the energy, have guaranteed the normal operation of system.
Below in conjunction with embodiment and accompanying drawing in detail the utility model is described in detail.
Fig. 1 is the utility model structural representation.
As shown in Figure 1, a kind of self-operated flow control valve, comprise by valve body (1), loam cake (3) and bellows (10) and constituting, it is characterized in that: be provided with automatic valve rod (2) in the left chamber of valve body (1) with automatic spool (4), be provided with diaphragm (9) between valve body (1) and the bellows (10), automatically valve rod (2) lower end is being connected with diaphragm (9), being provided with spring (11) below the diaphragm (9) withstands, be provided with connection in the right chamber of valve body (1) and set about the manual opening stem (6) of movable valve plug (8), manual opening stem (6) stretches out the outer end of gag (7) and is provided with scale (5).
Claims (1)
1. self-operated flow control valve, comprise by valve body (1), loam cake (3) and bellows (10) and constituting, it is characterized in that: be provided with automatic valve rod (2) in the left chamber of valve body (1) with automatic spool (4), be provided with diaphragm (9) between valve body (1) and the bellows (10), automatically valve rod (2) lower end is being connected with diaphragm (9), being provided with spring (11) below the diaphragm (9) withstands, be provided with connection in the right chamber of valve body (1) and set about the manual opening stem (6) of movable valve plug (8), manual opening stem (6) stretches out the outer end of gag (7) and is provided with scale (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98205203 CN2337367Y (en) | 1998-05-28 | 1998-05-28 | Self-operated flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98205203 CN2337367Y (en) | 1998-05-28 | 1998-05-28 | Self-operated flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2337367Y true CN2337367Y (en) | 1999-09-08 |
Family
ID=33961645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98205203 Expired - Fee Related CN2337367Y (en) | 1998-05-28 | 1998-05-28 | Self-operated flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2337367Y (en) |
-
1998
- 1998-05-28 CN CN 98205203 patent/CN2337367Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |