CN2196718Y

CN2196718Y - Energy-saving and silencing non-return valve

Info

Publication number: CN2196718Y
Application number: CN 94216999
Authority: CN
Inventors: 陈键明; 陈坤明; 陈炎明
Original assignee: Nanhai Jiujiang Xiaxi Yongxing Water Heater Equipment Factory
Current assignee: Nanhai Jiujiang Xiaxi Yongxing Water Heater Equipment Factory
Priority date: 1994-07-20
Filing date: 1994-07-20
Publication date: 1995-05-10
Anticipated expiration: 2004-07-20

Abstract

The utility model relates to an energy saving and silencing check valve which is composed of a valve body, a seal ring, a valve rod, a spring, a uniflow cover, a valve flap, a valve cap ring, etc. The valve body is approximately designed to be elliptical, and the uniflow cover and the valve flap are installed in the valve body by the valve rod; thus, the valve flap is tightly clung to the seal face of the valve body by the thrust force of the spring at normal time, and the uniflow cover and the valve flap are respectively designed to be conical. Therefore, the check valve can reduce the resisting force and the noise of fluid bodies, has the advantages of energy saving, reasonable structure and reliable motion, and is suitable for places where media flow backwards at high speed.

Description

Energy-saving and silencing non-return valve

The utility model relates to a kind of safety check, particularly a kind of energy-saving damping safety check.

Original safety check is provided with a flat board perpendicular to fluid in valve body, increased the resistance of gear fluid, when diameter valve is big more, the flap basal area is also big more, the resistance that blocks current is also big more, this mainly is that fluid rushes at dull and stereotyped turbulent flow, the eddy current greatly of producing, and fluid resistance and noise are all increased greatly.Old-fashioned in addition check valve body is a drum shape, the sharp turn in the valve body, the protruding more resistance that also increases fluid of point.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part and a kind of fluid resistance and noise of reducing is provided, and simple and reasonable energy-saving damping safety check.

The purpose of this utility model can reach by following measure: the utility model comprises valve body, seal ring, valve rod, spring, it is characterized in that: also have following current cover, flap, valve gap ring, the one side drive fit of valve gap ring and valve body, the two ends of valve rod are loaded on the centre of valve body another side and the centre of valve collar lid respectively, following current cover and flap are housed on valve rod, between flap and valve gap ring spring is housed, seal ring is equipped with at the position that flap contacts with valve body.

The purpose of this utility model can also reach by following measure: valve body is made approximate elliposoidal, and following current cover and flap are all made taper.

Fig. 1 is a structure sectional view of the present utility model;

Fig. 2 is the utility model structure side view;

The utility model is described in further detail below in conjunction with accompanying drawing (embodiment):

With reference to Fig. 1～Fig. 2, the utility model is made up of valve body 1, rubber seal 2, following current cover 3, flap 4, valve rod 5, spring 6, valve gap ring 7 etc.Valve gap ring 7 is loaded on the wherein one side of valve body 1, and valve rod 5 one ends penetrate the mesopore of valve gap ring 7, and the other end penetrates the mesopore of valve body 1 another side, and following current cover 3 and flap 4 are housed on valve rod 5, following current cover 3 and flap 4 alloy material seam; Between flap 4 and valve gap ring 7 spring 6 is housed, rubber seal 2 is equipped with at the position that flap 4 contacts with valve body 1.The thrust of flap 4 inner springs 6 is close on the valve body sealing surface at ordinary times, guarantees that medium can not flow backwards.When the thrust of flowing medium during, just can push flap 4 open, the pressure spring flow ipe greater than 5/1000MPa.During demolition if from after take off and the friction tight valve gap ring of valve body, spring and flap seam just can be withdrawed from.

Valve body 1 is made approximate elliposoidal, and valve body 1 inner chamber has formed the streamlined of nature like this, has reduced sharp turn, sharp protruding, thereby reduce fluid resistance and noise, following current cover 3, flap 4 all are designed to taper, along with hydrodynamic pressure is big more, flow velocity is big more, the cone angle of design more little (valve body is long more certainly).Design very easily split flow body like this, the turbulent drag loss of the front and back of flap seam is significantly reduced, also significantly reduce noise.The airflow design of valve inner makes valve inner flow section tendency of changes unanimity everywhere, does not have basal area to dwindle suddenly or becomes big place, the stream that has produced with regard to having reduced unexpected expansion of fluid and sudden contraction like this erosion noise and energy loss.The flow channel shape design of body cavity has guaranteed that runner has reduced fluid resistance by area greater than 100% when the flap standard-sized sheet.After outage, the active force of spring is closed flap rapidly.Dwindle rapidly along with closing this passageway area, increased the resistance that fluid flows backwards, thereby reduced the refluence speed of fluid.When valve when the quick closing valve stage finishes, only flow down a very little Flow area between valve body and the flap, thereby limited the refluence speed of fluid effectively, so greatly reduced water hammer pressure.

The utility model has following advantage compared to existing technology: can reduce resistance and the noise of fluid, energy savings; And rational in infrastructure, manufacturing process is simple, reliable in action, and cost is lower, is suitable for medium and flows backwards very rapidly local.

Claims

1, a kind of energy-saving damping safety check, comprise valve body 1, seal ring 2, valve rod 5, spring 6, it is characterized in that: also have following current cover 3, flap 4, valve gap ring 7, the one side drive fit of valve gap ring 7 and valve body 1, the two ends of valve rod 5 are loaded on the centre of valve body 1 another side and the centre of valve collar lid 7 respectively, following current cover 3 and flap 4 are housed on valve rod 5, between flap 4 and valve gap ring 7 spring 6 are housed, seal ring 2 is equipped with at the position that flap 4 contacts with valve body 1.

2, safety check according to claim 1 is characterized in that: valve body 1 is made approximate elliposoidal, and following current cover 3 and flap 4 are all made taper.