CN205663943U

CN205663943U - Many sealed control check valves

Info

Publication number: CN205663943U
Application number: CN201620344601.9U
Authority: CN
Inventors: 洪美玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-24
Filing date: 2016-04-24
Publication date: 2016-10-26
Anticipated expiration: 2026-04-24

Abstract

The utility model relates to a fluid control valve, thus provide a structural design novelty, adopt double -seal ring and control room can form delay open slowly close, can effectively prevent the medium refluence prevent the water hammer to pump and pipeline harm, alleviate the medium to the impact of valve component, can prolong the life of valve and connecting line again, design exhaust hole and apopore share and to realize the many sealed control check valves of fine self sealss effect, including valve body, valve gap, valve clack, the valve body is equipped with water inlet and the delivery port that link up the medium along axial parts, valve body middle part top is located to the valve gap, the valve clack is located on the valve body disk seat, be equipped with the doublestage seal groove on the disk seat, still be equipped with the sealed pad of doublestage between valve clack and the disk seat, adopt fixed rand to block between sealed the pad, still establish O type sealing washer between valve clack and the valve gap, form the control chamber between valve cover inner cavity and the valve clack inner chamber again, still be equipped with buffer spring between valve cover inner cavity and the valve clack inner chamber, valve cover inner cavity still is equipped with exhaust hole and inlet opening, and the sharing is realized in two holes.

Description

A kind of seal controls check-valves more

Technical field

This utility model relates to a kind of fluid control valve, controls check-valves particularly to sealing one more.

Background technology

Check-valves belongs to a kind of automatic valve, and its Main Function is to prevent medium from flowing backwards, prevent pump and drive motor anti- Turn, and the releasing of vessel media, be the fluid primary element that controls engineering, be widely used in fluid line, traditional only Return valve either swing check valve (rotating according to center of gravity) and lift check valve (moving along axis) all exist one total Shortcoming, i.e. shut-in time are long, and the refluence speed of water is fast, it is impossible to effectively prevent water hammer and flap from clashing into the sending out of phenomenon of valve body Raw, work process not only produces noise, has an effect on the service life of flap, and existing its flap of universal check-valves and valve Seat poor sealing, when the pressure of water return outlet is little in valve body, is easily generated leakage phenomenon, does not has non-return effect, and causes big The water waste of amount.The also rate-of flow fluctuation of some pipeline is very big, can impact valve element, cause valve to shake, And produce with noise, reduce valve and the sealing property of connected pipeline thereof and service life.

The most traditional check-valves still suffers from certain problem, the Chinese patent of Application No. 201320397932.5, tool Internal appearance is: disclose a kind of non-return valve, described unhurried current black box include big sealing flap, little sealing flap, spring and Limiting plate, big sealing flap is a cylinder barrel shaped structure, and this coaxial slide-and-guide in big sealing flap upper end is inlaid in leading of bonnet lower In sleeve；Big sealing flap lower end coaxial closed stream lending through hole, is coaxially shaped with a centre bore in the middle part of big sealing flap lower end, seals greatly Lobe bottom outer wall spaced radial is shaped with multiple by-pass prot, and big sealing flap upper end is coaxially fixed with a limiting plate；Below limiting plate In big sealing flap, coaxial slide-and-guide is embedded with a little sealing flap, and this little sealing flap original state blocks centre bore and closure bypass Connection between hole, leaves shifting distance between little sealing flap upper end and limiting plate；Described little sealing flap is cylindrical structure, should Little sealing flap upper end is coaxially shaped with a spring mounting groove, and is coaxially fixedly mounted with the lower end of a spring, this bullet in this spring mounting groove Spring upper end level is more than little sealing flap.Say from surface and can effectively open and Slow Close by the slow of control valve inlet outlet pressure differential, alleviate The medium impact to valve element, reduces vibrations, extends valve and the service life of connecting line, but from practice in city On field, major part a kind of non-return valve of customer response does not has described slow open and Slow Close when hydraulic pressure is big at all, alleviates Jie The impact of confrontation valve element, go back pressure of return water bigger time water directly from big sealing flap by-pass prot flow into big sealing flap centre bore lead Causing leakage serious, there is a large amount of so leakage phenomenon in the reaction of prolonged portions of client, is substantially reduced the service life of valve, the most right A kind of non-return valve there is also substantial amounts of defect, it is necessary to improves further.

Summary of the invention

For the problems referred to above, the utility model proposes a kind of novel in structural design, use Double seal ring and control room energy shape Become slow open and close, can effectively prevent medium from flowing backwards thus prevent that water hammer from damaging pump and pipeline, alleviate medium to valve element Impact, the service life of valve and connecting line can be extended again, designing and arranging pore and apopore share and are capable of well Many sealings of self sealss effect control check-valves.

For solving this technical problem, this utility model takes below scheme: a kind of seal controls check-valves, including valve more Body, valve gap, flap, described valve body part vertically is provided with water inlet and the outlet of through medium, and described valve gap is located at valve body Above Zhong Bu, described flap is located on valve body and valve seat, and described valve seat is provided with two-stage sealing groove, between described flap and valve seat also It is provided with two-stage sealing pad, between described sealing gasket, uses fixed card ring to block, also set O type between described flap and valve gap and seal Circle, is formed again between described valve gap inner chamber and flap inner chamber and controls chamber, be additionally provided with slow between described valve gap inner chamber and flap inner chamber Rushing spring, described valve gap inner chamber is additionally provided with steam vent and inlet opening, and holes realizes sharing.

Improve further: described flap is arranged over the O RunddichtringO that twice are connected with valve gap inner wall sealing.

Improve further: described valve gap inner chamber is provided with steam vent and the inlet opening of two.

By using preceding solution, the beneficial effects of the utility model are: this novel seals controls check-valves, institute more State valve seat and be provided with two-stage sealing groove, between described flap and valve seat, be additionally provided with two-stage sealing pad, design two-stage sealing function master If sealing property when must improve backwater that during backwater, hydraulic pressure is higher, improve the service life of product, adopt between described sealing gasket Block with fixed card ring, it is possible to effectively prevent sealing gasket obscission, between described flap and valve gap, also set O RunddichtringO, Formed again between described valve gap inner chamber and flap inner chamber and control chamber, between described valve gap inner chamber and flap inner chamber, be additionally provided with buffering elastic Spring, uses simultaneously and controls chamber and buffer spring design, this novel in structural design, make flap first when water inlet in the effect controlling chamber Slowly moving upward, the gas controlling intracavity is quickly discharged by steam vent, at this moment drives buffer spring to make the bullet of buffer spring Power plays a role and allows valve slowly open, and could effectively prevent flap and valve gap generation impact, can effectively prevent again medium Flowing backwards thus prevent water hammer from damaging pump and pipeline, described valve gap inner chamber is additionally provided with steam vent and inlet opening, and holes realizes altogether With, made a current direction steam vent when backwater is closed by pressure of return water, improve the flap sealing property to valve seat, when returning Water pressure is the biggest, more seals, and can extend the service life of valve and connecting line, and this product brings to user when putting into very well Economic benefit and social benefit.

Described flap is arranged over the O RunddichtringO that twice are connected with valve gap inner wall sealing, and described valve gap inner chamber is provided with two Individual steam vent and inlet opening.

Accompanying drawing explanation

Fig. 1 is this utility model example structure schematic diagram；

Fig. 2 is enlarged diagram at Fig. 1 this utility model embodiment A.

Detailed description of the invention

In conjunction with the drawings and specific embodiments, this utility model is further illustrated.

Referring to figs. 1 to Fig. 2, open a kind of seal of this utility model controls check-valves, including valve body 1, valve gap 3, flap more 2, described valve body 1 part vertically is provided with water inlet 11 and the outlet 12 of through medium, and described valve gap 3 is located in the middle part of valve body 1 Top, described flap 2 is located on valve body and valve seat 13, and described valve seat 13 is provided with two-stage sealing groove 131, described flap 2 and valve seat It is additionally provided with two-stage sealing pad 22 between 13, between described sealing gasket 22, uses fixed card ring 23 to block, described flap 2 and valve gap 3 Between also set O RunddichtringO 21, between described valve gap 3 inner chamber and flap 2 inner chamber again formed control chamber 5, described valve gap 3 inner chamber with Being additionally provided with buffer spring 4 between flap 2 inner chamber, described valve gap 3 inner chamber is additionally provided with steam vent 31 and inlet opening 31, and holes realizes altogether With.

Described flap 2 is arranged over the O RunddichtringO 21 that twice are connected with valve gap 3 inner wall sealing, and described valve gap 3 inner chamber sets There are steam vent 31 and the inlet opening 31 of two.

This novel seals controls check-valves more, and described valve seat is provided with two-stage sealing groove, between described flap and valve seat also It is provided with two-stage sealing pad, sealing property when must improve backwater that when design two-stage sealing function is mainly backwater, hydraulic pressure is higher, carry In the service life of high product, fixed card ring is used to block between described sealing gasket, it is possible to effectively to prevent sealing gasket obscission, Also set O RunddichtringO between described flap and valve gap, formed again between described valve gap inner chamber and flap inner chamber and control chamber, described valve Being additionally provided with buffer spring between cover cavity and flap inner chamber, use simultaneously and control chamber and buffer spring design, the design of this structure is new Grain husk, makes flap first slowly move upward when water inlet in the effect controlling chamber, and the gas controlling intracavity is quickly arranged by steam vent Go out, at this moment drive buffer spring to make the elastic force of buffer spring play a role to allow valve slowly open, could effectively prevent flap with Valve gap generation impact, can effectively prevent again medium from flowing backwards thus prevent water hammer from damaging pump and pipeline, in described valve gap Chamber is additionally provided with steam vent and inlet opening, and holes realizes sharing, and is made a current direction aerofluxus when backwater is closed by pressure of return water Hole, improves the flap sealing property to valve seat, when pressure of return water is the biggest, more seals, and can extend valve and connecting line In service life, this product brings good economic benefit and social benefit to user when putting into.

Described above, only utilize the embodiment of this origination techniques content, any those skilled in the art to use this wound Make modification, the change done, all belong to the scope of the claims that this creation is advocated, and be not limited to those disclosed embodiments.

Claims

1. sealing more and control a check-valves, including valve body, valve gap, flap, described valve body part vertically is provided with through medium Water inlet and outlet, described valve gap is located in the middle part of valve body top, and described flap is located on valve body and valve seat, it is characterised in that: Also include that flap, valve seat, sealing gasket and buffer spring, described valve seat are provided with two-stage sealing groove, between described flap and valve seat It is additionally provided with two-stage sealing pad, between described sealing gasket, uses fixed card ring to block, also set O type between described flap and valve gap and seal Circle, is formed again between described valve gap inner chamber and flap inner chamber and controls chamber, be additionally provided with slow between described valve gap inner chamber and flap inner chamber Rushing spring, described valve gap inner chamber is additionally provided with steam vent and inlet opening, and holes realizes sharing.

Seal the most according to claim 1 controls check-valves more, it is characterised in that: described flap is arranged over twice and valve The O RunddichtringO that lid inner wall sealing connects.

Seal the most according to claim 1 controls check-valves more, it is characterised in that: described valve gap inner chamber is provided with the row of two Pore and inlet opening.