CN2243002Y - Valve special for normal-pressure boiler - Google Patents
Valve special for normal-pressure boiler Download PDFInfo
- Publication number
- CN2243002Y CN2243002Y CN 95232571 CN95232571U CN2243002Y CN 2243002 Y CN2243002 Y CN 2243002Y CN 95232571 CN95232571 CN 95232571 CN 95232571 U CN95232571 U CN 95232571U CN 2243002 Y CN2243002 Y CN 2243002Y
- Authority
- CN
- China
- Prior art keywords
- valve
- piston
- cylinder
- normal
- pressure boiler
- 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 special valve for a normal-pressure boiler, which is mainly used for a water return pipeline. The valve is composed of a valve body, a cylinder body, a cylinder cover, a piston, a valve cover, etc., wherein, the piston drives the valve cover to open and close the valve; a control chamber communicated with a water pump is arranged below the piston; a spring is arranged above the piston. When the water pump is started, the piston pushes upwards under the action of water pressure, and the valve cover is opened; when the water pump is stopped, the piston makes the valve cover closed under the action of the spring. The valve solves the problem of water overflow of a normal-pressure boiler system.
Description
The utility model relates to the special valve that is used on the normal-pressure boiler water return pipeline.
Be used for valve on the normal-pressure boiler water return pipeline at present because structural reason, can not be under situation about having a power failure suddenly by the water of water tank, make the water of water tank pour in down a chimney into boiler and discharge from vent, cause the accident.
The purpose of this utility model is exactly that a kind of normal-pressure boiler special valve is provided in order to overcome the deficiencies in the prior art.
The purpose of this utility model can realize by following measure:
This special valve comprises valve body, cylinder body, cylinder cap, piston, valve gap.Concrete structure is that valve body (9) is a three-way valve, but be provided with the valve gap (10) of open and close between its inlet A and the outlet B, the lower end of valve gap upper end cylinder lever connecting rod (8), the upper end of pull bar is fixed together by nut (13) and piston (5), piston moves in cylinder body (3), and cylinder cap (2) is installed in the cylinder body upper end, and the cylinder body lower end connects cylinder bottom (7), the control end of cylinder bottom and valve body is fixed together, and pull bar moves in the hole of cylinder bottom.Be provided with spring (14) between piston and the cylinder cap, be fixed with adjusting screw rod (1) by nut (15) in the middle of the cylinder cap, be provided with control chamber C between piston and the cylinder bottom.Pipe joint (11) is installed on the wall of cylinder body, and its endoporus communicates with chamber C, the throttle orifice (12) that is provided with at an end of pipe joint.
The purpose of this utility model can also realize by following measure:
Piston (5) circumferential surface is provided with seal ring (4).
Cylinder bottom (7) is provided with seal ring (6) in the hole.
Description of drawings:
Fig. 1 is a general illustration of the present utility model, (1) adjusting screw rod wherein, (2) cylinder cap, (3) cylinder body, (4) (6) seal ring, (5) piston, (7) cylinder bottom, (8) pull bar, (9) valve body, (10) valve gap, (11) pipe joint, (12) throttle orifice, (13) (15) nut, (14) spring, (16) valve port pad.
The utlity model has following advantage:
1, can safely, in time end backflow.
2, rational in infrastructure, easy to use.
3, has buffering water attack function.
Below the utility model is described further:
This valve is to develop for solving the normal-pressure boiler system problem of metalling run out.Cardinal principle is to drive valve gap by piston to open, and by spring valve gap is closed.Control chamber is arranged below the piston, and water pump connects control chamber by pipe joint, and during turn on pump, hydraulic pressure will push away on the piston, opens valve gap.During termination of pumping, piston is closed valve gap by top spring action and deadweight.The end face of pipe joint is provided with throttle orifice, makes in the control chamber hydraulic pressure could standard-sized sheet or full cut-off about 10 seconds, has overcome valve gap and has opened and closed too fastly, plays buffer function.Cylinder cap is provided with adjusting screw rod, is used for the stroke of regulating piston.
Claims (3)
1, a kind of normal-pressure boiler special valve, by valve body, cylinder body, cylinder cap, piston, valve gap is formed, it is characterized in that: valve body (9) is a three-way valve, be provided with and open between its inlet A and the outlet B, the valve gap (10) that closes, the lower end of valve gap upper end cylinder lever connecting rod (8), the upper end of pull bar is fixed together by nut (13) and piston (5), piston moves in cylinder body (3), cylinder cap (2) is installed in the cylinder body upper end, the cylinder body lower end connects cylinder low (7), and the control end of cylinder bottom and valve body is fixed together, and pull bar moves in the hole of cylinder bottom, be provided with spring (14) between piston and the cylinder cap, be fixed with adjustment screw rod (1) by nut (15) in the middle of the cylinder cap, be provided with control chamber C between piston and the cylinder bottom, pipe joint (11) is installed on the wall of cylinder body, its endoporus communicates with chamber C, is provided with throttle orifice (12) at an end of pipe joint.
2, according to the said a kind of normal-pressure boiler special valve of claim 1, it is characterized in that: piston (5) circumferential surface is provided with seal ring (4).
3, according to the said a kind of normal-pressure boiler special valve of claim 1, it is characterized in that: cylinder bottom (7) is provided with seal ring (6) in the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95232571 CN2243002Y (en) | 1995-10-19 | 1995-10-19 | Valve special for normal-pressure boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95232571 CN2243002Y (en) | 1995-10-19 | 1995-10-19 | Valve special for normal-pressure boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2243002Y true CN2243002Y (en) | 1996-12-18 |
Family
ID=33876905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95232571 Expired - Fee Related CN2243002Y (en) | 1995-10-19 | 1995-10-19 | Valve special for normal-pressure boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2243002Y (en) |
-
1995
- 1995-10-19 CN CN 95232571 patent/CN2243002Y/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 |