CN2349428Y

CN2349428Y - Advanced guiding type double-stage cut-off valve

Info

Publication number: CN2349428Y
Application number: CN 98227184
Authority: CN
Inventors: 禅耀澄; 禅志坚
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-24
Filing date: 1998-06-24
Publication date: 1999-11-17
Anticipated expiration: 2008-06-24

Abstract

The utility model discloses a pilot type double stage stop valve which is used for controlling water level and belongs to the technical field of control devices. The utility model is mainly composed of a main valve and a float type pilot valve which are connected by a guide pipe, wherein in the main valve, a valve rod is sheathed with an involucra and springs and is installed in a valve body, and an upper and a lower cavities of an involucra cylinder are installed on a valve cap; in the pilot valve, a valve body is installed on the upper end of a float chamber, a push rod is installed in the valve body and a float is installed on the lower end of the push rod. The utility model has the advantages of simple structure, low manufacture cost and energy consumption, large open and close force of the main valve and stable and reliable operating performance and is suitable for controlling the open and the close of water or other neutral fluid bodies when pressure is not above 5Bar.

Description

Leading type twin-stage stop valve

A kind of leading type twin-stage stop valve is used for water level control is belonged to the control gear technical field.

Before this practicality is newly made, be used for water level control, use the ball float in the casing mostly, utilize lever to open and close valve, or use the electrode level sensor, drive electromagnetic valve.Big-and-middle-sized valve mainly adopts screw rod gate valve or electric screw gate valve, this class formation valve, and complex structure, the manufacture cost height, energy consumption is big, control is complicated automatically in realization, the service behaviour instability.

The purpose of this utility model is to overcome above-mentioned deficiency, thereby provides a kind of simple in structure, low cost of manufacture, and it is little to consume energy, and stable work in work is to reach control water level, the leading type twin-stage stop valve of keying, pressure regulation purpose.

Main solution of the present utility model is achieved in that it mainly is made up of main valve, float type pilot valve two parts, connects two mouthfuls of A, B with the control conduit in two valves.Main valve comprises valve body 1, valve gap 12, valve rod 4, spring 5, epithelium 6, epithelium cylinder epicoele 7, epithelium cylinder cavity of resorption 13.Valve rod 4 is installed in the valve body 1 and loads onto valve gap 9, is inserted in spring 5, epithelium 6 on the valve rod 4, and epithelium cylinder cavity of resorption 13 is installed on the valve gap 9, and epithelium cylinder epicoele 7 is fastening with epithelium cylinder cavity of resorption 13.The float type pilot valve comprises float chamber 14, float 11, push rod 10, guide's valve body 8.Guide's valve body 8 is installed in float chamber 14 upper ends, and push rod 10 is installed in guide's valve body 8, and float 11 is installed in push rod 10 lower ends.

Description of drawings:

Fig. 1 is the utility model structural front view:

Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:

The utility model adopts the float type pilot valve to realize water level control.A complete set is made up of main valve and float type pilot valve.Pilot valve is connected, forms main valve by pipeline and epithelium cylinder epicoele (7) and opens and closes control loop, and installing in the valve body of main valve 1 between valve rod 4, epithelium cylinder epicoele (7) and valve body (1) has throttle orifice to link to each other.1 of valve rod 4 lower ends and valve body are equipped with main valve clack 2, and valve gap 12 is installed on the valve body 1.Be inserted in spring 5 on the valve rod, epithelium cylinder cavity of resorption 13 is installed on epithelium 6, the valve gap 12, epithelium cylinder cavity of resorption 13 is fastening with epithelium cylinder epicoele 7.The float type pilot valve adopts in float chamber 14 upper ends guide's valve body 8 is installed, and push rod 10 is installed in guide's valve body 8, and flap 9 is housed on the push rod 10, and float 11 is installed in the float chamber 14 of push rod 10 ends.Main valve opens and closes in order to the control water inlet, and pilot valve is contained on the water line (need not be contained in water tank inside).When cistern water level reached height, the float 11 in the pilot valve floated, and closed the earial drainage aperture of dead pilot valve by push rod 10 and flap 9.This moment, the water of main intake valve entered epithelium cylinder epicoele 7 by throttle orifice 3 through the center hole of valve rod 4, and pressure is raise, because the area of epithelium 6 is greater than the area of flap 2, so epithelium promotes valve rod 4 and press down, and main valve is closed.When drawdown is following to water line, float 11 sinks, fall under the acting in conjunction of push rod 10 and flap 9 hydraulic pressure and gravity in pilot valve body 8, pilot valve is opened, cause pressure reduction in the epithelium cylinder epicoele 7 by the control conduit between A, B, move on the acting in conjunction lower valve rod of water intake pressure and spring 5 elastic force, main valve is opened.

The utlity model has following advantage:

1, simple in structure, low cost of manufacture, less energy consumption; 2, the main valve hoisting capacity is big, stable work in work Reliably, float volume is little (only needs 200 centimetres³), need not be contained in water tank inside, be convenient to installation and maintenance; 3, be applicable to when pressure＜5Bar, control water or other neutral fluids open valve; And can be various little The type valve is made pilot valve (as: small-sized ball-cock assembly, Minitype electromagnetic valve, pressure valve etc.), to the mobile reality of liquid The row remote control to reach the control water level, opens and closes the purpose of pressure regulation; 4, the keying power owing to this valve is Therefore the pressure of controlled liquid itself, can open and close with very little power ratio control the valve of big flow.

Claims

1, a kind of leading type twin-stage stop valve is characterized in that adopting main valve, float type pilot valve two parts to form, connects with conduit in two valves,

A, main valve comprise valve body (1), valve gap (2), valve rod (4), spring (5), epithelium (6), epithelium cylinder epicoele (7), epithelium cylinder cavity of resorption (13), valve rod (4) is installed in the valve body (1) and loads onto and is inserted in spring (5), epithelium (6) on valve gap (9), the valve rod (4), valve gap (9) is gone up epithelium cylinder cavity of resorption (13) is installed, and epithelium cylinder epicoele (7) is fastening with epithelium cylinder cavity of resorption (13);

B, float type pilot valve comprise float chamber (14), float (11), push rod (10), guide's valve body (8), guide's valve body (8) is installed in float chamber (14) upper end, and push rod (10) is installed in guide's valve body (8), float (11) is installed in push rod (10) lower end.

2, leading type twin-stage stop valve according to claim 1 is characterized in that having throttle orifice to link to each other between epithelium cylinder epicoele (7) and valve body (1).