CN2044029U

CN2044029U - Discharge valve driven by float

Info

Publication number: CN2044029U
Application number: CN 88216123
Authority: CN
Inventors: 王明晨
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-11-09
Filing date: 1988-11-09
Publication date: 1989-09-06

Abstract

The utility model discloses a discharge valve driven by a float, which is a gas discharging and water stopping valve using a float to upward lift a valve plug. The valve plug used for guiding is in rigid connection with the float. The lower end of the valve plug is sheathed with an O-shaped rubber ring. The utility model is mainly used for discharging gas and the water stopping process in the hot water heating system.

Description

Discharge valve driven by float

The float actuated outlet valve is a kind ofly to promote the exhaust sealing valve of valve plug by float actuated, is rigidly connected as the valve plug and the float of guide way, and O shape cushion rubber is equipped with in the valve plug lower end, is mainly used in the exhaust sealing in the hot water heating system.

Existing float actuated outlet valve is made up of valve body, float substantially, and float and valve plug fuse or make one, and valve plug is relative with exhaust port as valve opening, leans on float to float valve plug is plugged in exhaust port, closes exhaust port.But valve plug all is that face contacts with exhaust port (or valve opening), surface of contact processing request height, surface of contact is as being stained with some foreign material (as the corrosion thing), will influence the work of valve, do not reach the close stagnant water effect of good envelope, float is made generally in cavity, fabricating cost higher (as the automatic vent sealing valve of Chinese utility model patent 85204220 records).

It is a kind of easy to make that the purpose of this utility model is to provide, and cost is lower, and sealing is the float actuated outlet valve reliably.

Float actuated outlet valve of the present utility model is made up of valve body 1,5 and the float 6 that is positioned at body cavity, valve body still has inlet 7 and the upper air-vent 9 that is communicated with inner chamber, its structural feature is: there is the guide way that is positioned at middle part, exhaust port lower end float upper end 4, and the guide way lower end is set with O shape cushion rubber 3.Guide way is preferably cone 2, and awl end suit C shape cushion rubber place has the spill annular groove.Float and guide way thereof can be made into polyacrylic entity float and guide way.When float come-up, guide way is up along exhaust port, make O shape cushion rubber be compressed in the exhaust port lower end with above the float between, exhaust port and inner chamber are separated the formation hermetic seal.

The exhaust port of this float actuated outlet valve needn't be processed into the higher valve opening of precision, and needn't be shaped on the higher valve plug of precision, and float also can not made hollow, makes easy to makely, and processing cost is low.And O shape cushion rubber and exhaust port lower end wall area of contact are little, and the probability that is stained with impurity at surface of contact is little, and because the compressible elasticity of O shape cushion rubber to less impurity, does not influence its sealing, sealing reliability is higher, is not prone to water leakage phenomenon.Valve gap when float and valve body upper end adopts plastics, then better tightness.

Further specify this float actuated outlet valve below in conjunction with accompanying drawing.Accompanying drawing is represented a kind of float actuated outlet valve of taper guide way.

The valve body of this float actuated outlet valve is threaded by valve casing 5 and valve gap 1 and forms between and form body cavity.Valve gap is made by polysulfone material, and the valve gap middle part has the exhaust port 9 that is communicated with inner chamber, and the valve gap side has and is communicated with exhaust port and extraneous guide hole 8.The middle part, lower end of valve casing 5 has the inlet 7 that is communicated with inner chamber, and inlet has the screw thread that is connected with heating pipe.Polyacrylic entity float 6 is housed in the body cavity, and the float three-dimensional dimension is than the little 15mm of inner chamber.Float upper end has guide way, and guide way is tapered 2, awl end 6(guide way and above the float between) have annular groove 4, groove is set with O shape cushion rubber 3, O shape cushion rubber material is the high-temperature resistant rubber Ethylene Propylene Terpolymer.The cushion rubber diameter is greater than the diameter of exhaust port.This float actuated outlet valve is compared with automatic vent sealing valve, and cost reduces by 50%.

Claims

1, the float actuated outlet valve is made up of valve body 1,5 and the float 6 that is positioned at body cavity, valve body has inlet 7 and the upper air-vent 9 that is communicated with inner chamber, it is characterized in that: float upper end 4 has the guide way 2 that is positioned at middle part, exhaust port 9 lower ends, and the guide way lower end is set with O shape cushion rubber 3.

2, as the said float actuated outlet valve of claim 1, it is characterized in that: guide way is a cone 2, and awl end suit O shape cushion rubber place has the spill annular groove.

3, as claim 1 or 2 said float actuated outlet valves, it is characterized in that: float and guide way thereof are entity float and the guide way that polypropylene is made.