CN2337362Y

CN2337362Y - Valve

Info

Publication number: CN2337362Y
Application number: CN 97243141
Authority: CN
Inventors: 凌长彬
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-12-29
Filing date: 1997-12-29
Publication date: 1999-09-08
Anticipated expiration: 2007-12-29

Abstract

The utility model relates to a valve. Two symmetrical ball clacks or butterfly clacks are arranged in a valve body, and the bottoms of the ball clacks or the butterfly clacks are hinged mutually. The lower part of a valve rod is fixedly connected with a supporting and gathering disk, and the supporting and gathering disk is symmetrically provided with two inclined guiding holes. The upper end surfaces of the ball clacks or the butterfly clacks are provided with guiding pins corresponding to the guiding holes. The valve not only reserves the characteristics of small fluid resistance, quick opening and closing, simple structure, etc. of an original ball valve or an original butterfly valve, and but also has the performance of high temperature resistance, high pressure resistance, corrosion resistance and electrostatic prevention. The phenomena of knotting and pulling between the sealing surfaces are eliminated by the utility model. In addition, the utility model also has the advantages of stable product quality and long service life.

Description

A kind of valve

The utility model relates to a kind of valve, particularly a kind of controlling plumbing fixtures medium circulation or the valve that blocks.

At present, in the middle of controlling plumbing fixtures medium circulation or the valve that blocks, the structural type of ball valve or butterfly valve and performance thereof are superior than other valves, and it has advantages such as simple in structure, that switch is rapid.In order further to improve wear-resisting, high temperature resistant, the corrosion resistant performance of sealing surface, some people is the pile-up welding hard alloy material on the sealing surface of valve, plays certain effect.But, owing to also exist easy biting the end of knot between the sealing surface, phenomenon such as pull, and adopt soft materials such as nylon, teflon or rubber to make seal elements, and then having influenced high temperature resistant, high pressure resistant, the decay resistance of valve, using scope is restricted.In order to overcome above-mentioned defective, the inventor has applied for " a kind of valve " patent (97242638.8), this technology is to be equipped with two symmetrical ball clacks or butterfly lobe in valve body, its bottom is hinge mutually, stem lower portion is fixedlyed connected with positioning disk, symmetry is equipped with two straight pins and two circular arc shaped guide slots on the positioning disk, and ball clack or butterfly lobe upper-end surface also are equipped with and corresponding pin-and-hole of positioning disk and guide finger.This technology has certain advantage, but its structure is still comparatively complicated.

The purpose of this utility model is the defective that occurs in order to overcome in the prior art, provides a kind of structure more simple, and it is rapid, high temperature resistant, high pressure resistant, corrosion-resistant to reach switch, can make again biting the end of knot does not take place between the sealing surface, to pull the valve of phenomenon.

In order to achieve the above object, the utility model has adopted following technological scheme:

At a kind of valve body that comprises, in the middle of the valve that valve gap, support, valve rod, handwheel, ball clack or butterfly lobe are constituted, valve gap is fixedly connected on the valve body upper end; Support is connected with the upper end of valve gap; Valve rod is put the central authorities at valve gap, and its upper end is meshed with handwheel; Also be equipped with the guiding groove that is made of oblique section and straight section on this valve rod, the guide finger on this guiding groove and the cradle wall interacts and also moves, and makes valve rod be subjected to do up, descending after the handwheel turning effort or rotatablely move; Be equipped with two ball clacks or the butterfly lobe of band sealing surface in the valve body, the bottom of this two ball clack or butterfly lobe is hinged by connecting shaft; Dish is held together in the also fixedly connected support in its bottom at valve rod, and this supports and is equipped with two pilot holes on the dish, and ball clack or butterfly lobe upper-end surface are equipped with this and support pilot hole guide finger corresponding and that move therein on the dish.

Characteristics such as the utility model had both kept former ball valve or the butterfly valve fluid resistance is little, and switch is rapid, and structure is more simple have high temperature resistant, high pressure resistant, corrosion-resistant, antistatic performance again, and have eliminated the biting the end of knot that occurs between the sealing surface, pull phenomenon.Constant product quality, improve working life greatly.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the utility model structural representation;

Fig. 2 holds together the plan view of dish for the utility model support;

Fig. 3 is the schematic representation of the utility model when the ball clack rounding state.

With reference to accompanying drawing, fixedly connected with valve gap 5 in the upper end of valve body 9, and support 2 is fixedly linked with the upper end of valve gap 5.Valve gap 5 central authorities are equipped with valve rod 3, and these valve rod 3 upper ends connect a handwheel 1, and with the threaded engagement of handwheel 1, this handwheel 1 can drive valve rod 3 relative valve gaps 5 and rotate.Also be equipped with the guiding groove 3.1 that is made of oblique section and straight section on this valve rod 3, the also operation that interacts of the guide finger 4 on the wall of this guiding groove 3.1 and support 2 makes valve rod 3 be subjected to do up, descending after handwheel 1 turning effort or rotatablely move.The two symmetrical ball clacks 8 that have sealing surface are put among valve body 9, and the bottom of this two ball clack 8 is hinged together by connecting shaft 10.The bottom of valve rod 3 and a support are held together dish 6 and are fixedlyed connected, this supports, and symmetry is equipped with two pilot holes 6.1 on the dish 6, the distance that dish 6 center O are held together in the center A of these pilot hole 6.1 upper ends and support is about to pilot hole and will be set to outward-dipping hole, lower end inwards, upper end less than the distance of holding together the O of disk center near lower end, hole center B and support; To the hole that outer lower end tilts inwards, promptly the center A of these pilot hole 6.1 upper ends holds together the distance of dish 6 center O greater than lower end, hole center B and the distance that supports the O of disk center with support on also this pilot hole 6.1 can being set to.And the upper-end surface of two ball clacks 8 be equipped with support dish 6 on the corresponding and guide finger 7 that can move therein of pilot hole 6.1.

Below with pilot hole upper end inwards the outward-dipping embodiment in lower end the operation that the utility model is opened and closed is described:

When the utility model need be opened, counter clockwise direction rotation hand wheel 1, owing to interact in guiding groove 3.1 straight sections of guide finger 4 on valve rod 3 on the support 2 and operation, it is descending that dish 6 is held together in valve rod 3 drive supports this moment, guide finger 7 moves in pilot hole 6.1, ball clack 8 inwardly draws in and leaves valve body 9 sealing surfaces, leaves gap (referring to Fig. 3) between ball clack 8 and valve body 9 sealing surfaces; Continue rotation hand wheel 1, the guiding groove 3.1 of guide finger 4 on valve rod 3 tiltedly interacts and operation in the section, and valve rod 3 drives support and holds together dish 6 and make rotating operation, and ball clack 8 also rotates with it, and the runner hole in two ball clacks communicates with runner hole on the valve body 9, and valve is all opened.

Otherwise, when the needs throttle down, the handwheel 1 that turns clockwise, guide finger 4 guiding groove 3.1 on valve rod 3 tiltedly interacts and operation in the section, dish 6 is held together in valve rod 3, support and ball clack 8 is made rotating operation, runner hole on two ball clacks 8 and the dislocation of the runner hole on the valve body 9; Continue rotation hand wheel 1, guide finger 4 is along up in guiding groove 3.1 straight sections, valve rod 3 and support are held together dish 6 and are risen, guide finger 7 is subjected to the restriction of pilot hole 6.1, two ball clacks 8 outwards strut separately, and ball clack 8 is close to valve body 9, and two sealing surfaces are adjacent to and are the sealing shape on ball clack 8 and valve body 9, at this moment, valve is all closed.

Because the utility model is when closing, support is held together dish 6 and is done the opposite relative movement of direction with guide finger 7, and the power interaction that makes progress of the downward gravity of ball clack 8 and pilot hole 6.1, therefore, can not influence its sealing surface and overlap, thereby make sealing surface injury-free, improve the working life of valve greatly.

Technological scheme described in the above embodiment is applicable to ball clack, also is suitable for butterfly valve, and in the time of ball clack need being replaced with the butterfly lobe certainly, miscellaneous part also should be done the adaptability conversion.In addition, the shape of pilot hole 6.1 and guide finger 7 can be cylinder, prism or other geometrical shapies, and the specific requirement when selecting which kind of shape to make according to valve is decided.

Claims

1, a kind of valve, comprise valve body, valve gap, support, valve rod, handwheel, ball clack or butterfly lobe, valve gap is fixedly connected on the valve body upper end, support is connected with the upper end of valve gap, valve rod is put the central authorities at valve gap, its upper end is meshed with handwheel, also be equipped with the guiding groove that is constituted with straight section by oblique section on this valve rod, guide finger on this guiding groove and the cradle wall interacts and operation, make valve rod be subjected to do after the handwheel turning effort up, descending or rotatablely move, be equipped with two ball clacks or the butterfly lobe of band sealing surface in the valve body, the bottom of this two ball clack or butterfly lobe is hinged by connecting shaft, it is characterized in that: the bottom of valve rod and is supportted to hold together to coil and is fixedlyed connected, this supports and is equipped with two pilot holes on the dish, and ball clack or butterfly lobe upper-end surface are equipped with this and support pilot hole guide finger corresponding and that move therein on the dish.

2, valve according to claim 1 is characterized in that: the pilot hole on described support holds together to coil, the distance of disk center is held together less than center, lower end, hole and the distance that supports disk center with support in its center, upper end, hole.

3, valve according to claim 1 is characterized in that: the pilot hole on described support holds together to coil, the distance of disk center is held together greater than center, lower end, hole and the distance that supports disk center with support in its center, upper end, hole.

4, valve according to claim 1 is characterized in that: it is symmetrical that this supports on the dish two pilot holes.