CN102996892A

CN102996892A - Time delaying valve

Info

Publication number: CN102996892A
Application number: CN2012105310306A
Authority: CN
Inventors: 施建刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-11
Filing date: 2012-12-11
Publication date: 2013-03-27

Abstract

The invention provides a time delaying valve. The valve disclosed by the invention is driven by buoyancy force of a floater valve body in a valve shell in liquid; the valve is provided with two inlet points, namely a high-level inlet point and a low-level inlet point; the valve is provided with an outlet point; when a feeding liquid level is higher than the high level of the inlet points, the valve keeps the basically closed state due to the gravity of the valve and the pressure of a high liquid level; and when the feeding liquid level is lower than the high level of the inlet points, a floater floats up due to the buoyancy force and the valve is in a basically switching on state. The time delaying valve has a very important effect on rainwater flow distribution of an initial stage and a later stage.

Description

Time-delay valve

Technical field

This invention classification of technology fields is: (1) F16K 1/12 band streamline valve element, and when valve was opened, fluid flowed around it; (2) F16K 31/18 is by float actuated; (3) F16K 17/24 acts directly on and cuts off on the element; (4) 17/28 of F16K is at a direction operation; (5) F16K 7/07 uses hydrodynamic pressure.

Background technique

Valve generally has strict demand to leakproofness and promptness, but sometimes not strict to leakproofness and promptness requirement in some system, even opposite, and the needs of the gentle On The Drug Release of time-delay being arranged.Like rain in the drainage system because the needs that water quality is separated, the rainwater in initial stage and later stage is discharging separately, reducing cost of water treatment, if but the rainwater at initial stage in time drained, just be difficult to reach the effect of separation.Time-delay valve is mainly for analogue, utilize the variation of liquid level in the pipe during the course, rely on the gravity of float in the valve, the pressure of high liquid level, buoyancy with float in the valve, keep closing of valve, cause the unlatching of valve, it is substantially closed to reach early stage, slowly sluice the effect of very fast discharging of water level decline later stage.

Summary of the invention

Valve is made of the valve casing of a positive threeway shape and the valve body of bullet-headed band plug hollow.Valve body is made of lightweight material, but the gravity of filling liquid change valve body in the internal cavities is discharged mouth of pipe opening degree to regulate control, establishes the slit blow-by between valve body and valve casing.Valve casing has two access points (high-order access point and low level access point), and one picks out a little.When the valve body upstream was anhydrous, valve body was owing to the gravity of self, valve complete shut-down; Liquid level rising late gate state is relevant with top liquid inlet pipe liquid level, when liquid level is higher than high-order access point, because pressure difference, when slowly discharging discharge liquid, still make valve be in basic closed attitude, later stage is when being lower than high-order access point when liquid level, high-order access point decompression, the float valve body is owing to floating function rising, the larger unlatching of valve.

Description of drawings

The valve body structure of time-delay valve is seen Fig. 1, Fig. 2, Fig. 3.

Fig. 1 is sectional elevation, the sectional elevation when Fig. 2 is the unlatching of float valve body come-up, and Fig. 3 is the A-A sectional view.

Claims

1. method that prolongs the fluid discharge time, gravity by float valve body in the valve and top inlet pipe pressure more than needed and the gap force retaining that the produces basic closed attitude when initial that sluices, along with the reduction of top liquid entering hole pressure, the float come-up, valve is opened substantially when realizing upper tube without feed liquor.

2. product of realizing liquid time-delay discharging, valve valve casing and valve body leave the gap, tight seal not, basic closed attitude when keeping initial by the gravity of inner float valve body and top inlet pipe pressure more than needed, reduction along with top liquid entering hole pressure, the float come-up, valve is opened substantially when realizing upper tube without feed liquor.

3. product that can adapt to liquids having different specific weight, float valve body hollow, upper opening, the weight of filling liquid will determine the size that float valve is opened, and also can adapt to different liquid specific gravities simultaneously.