CN2337354Y

CN2337354Y - Valve

Info

Publication number: CN2337354Y
Application number: CN 97242637
Authority: CN
Inventors: 凌长彬
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-11-13
Filing date: 1997-11-13
Publication date: 1999-09-08
Anticipated expiration: 2007-11-13

Abstract

The utility model relates to a valve which is composed of a valve body, a bracket, a hand wheel, a valve handle, a ball clack or a butterfly clack, a wedge body, etc., wherein the ball clack or the butterfly clack with a sealing surface is arranged in the valve body, and the wedge body with a slope is also arranged in the valve body; an included angle of the slope and a horizontal line of the upper end surface of the wedge body is larger than 90 DEG, and the included angle of the slope and a horizontal line of the lower end surface of the wedge body is smaller than 90 DEG; the lower end of the valve handle is fixedly connected with the wedge body, and the upper end of the valve handle is engaged with the hand wheel by screw threads. The utility model reserves the characteristics of quick opening and closing, small fluid resistance, etc. of an original ball valve or an original butterfly valve, and also has the performance of high temperature resistance and high pressure resistance. In addition, the utility model eliminates the knotting phenomenon and the pulling phenomenon between the sealing surfaces. Thereby, the quality of a product is stable, and the service life of the product is prolonged greatly.

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, the ball valve of home and abroad or the structural type of butterfly valve are a lot, and the quality of its performance depends primarily on the structure and material of seal element.Therefore, someone has adopted the sealing configuration of elastic seat and elastic floating valve seat, people build-up wear-resistant, high temperature resistant, corrosion resistant Hardmetal materials on sealing surface are also arranged, these measures can play a role, but all fail to solve fully biting the end of knot between the sealing surface, problem such as pull, and adopt soft materials such as nylon, teflon or rubber to make seal element, and having influenced high temperature resistant, high pressure resistant, the decay resistance of valve, using scope is restricted.

Other has a kind of High Temperature High Pressure ball valve and butterfly valve, is equipped with the wedge-type spheroid on inclined-plane wide at the top and narrow at the bottom or butterfly plate in the valve pocket of its valve body and the ball clack or the butterfly lobe that match with the inclined-plane combine.When the needs throttle down, wedge-type spheroid or butterfly plate are descending, strut two ball clacks or butterfly lobe and force it to be adjacent to the formation sealing to sealing surface of seat; When need were opened valve, wedge-type spheroid or butterfly plate were up, and two ball clacks or butterfly lobe are lifted off a seat sealing surface after draw at the center, and rotating to an angle opens valve wide open again.Though this valve has solved biting the end of knot between the sealing surface, has pulled phenomenon, also exists the some shortcomings part.Particularly when this valve is big, in closing the process of this valve, because ball clack or butterfly lobe are subjected to the influence of gravity, make the downward movement in the same way of wedge-type spheroid or butterfly plate and ball clack or butterfly lobe do, repeatability is subjected to certain influence between ball clack or butterfly lobe and the valve pocket inner sealing surface, thereby make sealing face damage, caused mass stability poor, shorten working life greatly.

The purpose of this utility model is to overcome above-mentioned defective of the prior art, provides can not occur biting the end of knot between a kind of sealing surface, pull phenomenon, has high temperature resistantly, high voltage performance, and can keep stay-in-grade valve in actual use.

To achieve these goals, the utility model has adopted following technological scheme: in comprising the valve that is made of valve body, bottom, support, handwheel, valve rod, ball clack or butterfly lobe, wedge, bottom fixedly covers this valve body lower end, support is fixedlyed connected with this valve body upper end, and handwheel is installed in this support and can rotates; Be equipped with the ball clack or the butterfly lobe of band sealing surface in the valve body, and the wedge that is equipped with the inclined-plane and acts on mutually by this inclined-plane and ball clack or butterfly lobe, this wedge inclined-plane and the formed angle of wedge upper-end surface horizontal line are greater than 90 degree, spend less than 90 with the formed angle of wedge lower end surface horizontal line, the central authorities of wedge have a runner hole; Fixedly connected with wedge in the valve rod lower end, the upper end also is equipped with guiding groove by screw thread and handwheel engagement on the valve rod, be fixedly equipped with guide finger on the cradle wall, this guide finger interacts in the stem guiding groove, makes valve rod do up, descending after handwheel rotation or rotatablely move

Owing to adopted above-mentioned structure and shape, characteristics such as make the utility model both keep former ball valve or the butterfly valve fluid resistance is little, and switch is rapid have high temperature resistant, high voltage performance again, eliminated the biting the end of knot that occurs between the sealing surface, pulled phenomenon.Constant product quality, improve working life greatly.

Fig. 1 is the utility model structural representation;

Fig. 2 is a ball clack rounding state schematic representation;

Fig. 3 is wedge rotation back full-gear schematic representation.

The utility model will be further described below in conjunction with accompanying drawing and embodiment.

With reference to Fig. 1, the utility model is made of valve body 7, bottom 8, support 2, handwheel 1, valve rod 4, ball clack 6, wedge 5.Its bottom 8 fixedly covers the lower end of this valve body 7, and support 2 is fixedly linked with the upper end of valve body 7, and handwheel 1 is installed in the support 2; Be equipped with ball clack 6 and wedge 5 in the valve body 7, the inclined-plane of this wedge 5 and the formed angle of wedge upper-end surface horizontal line are greater than 90 degree, spend less than 90 with the formed angle of lower end surface horizontal line, promptly see from its section to be one up-narrow and down-wide trapezoidal, the central authorities at this wedge 5 also have a runner hole 5.1 in addition; Fixedly connected with wedge 5 in the lower end of valve rod 4, its upper end also is equipped with guiding groove by screw thread and handwheel 1 engagement on the valve rod 4, be fixedly equipped with guide finger 3 on support 2 walls, this guide finger 3 stretches on the valve rod 4 in the guiding groove and interacts, and makes valve rod 4 do up, descending after handwheel 1 rotation or rotatablely move.

When needs are opened the utility model, rotation hand wheel 1 in the counterclockwise direction, because guide finger 3 interaction in the guiding groove straight section on valve rod 4 on the support 2, valve rod 4 and wedge 5 are earlier descending, at this moment, the sealing surface that ball clack 6 leaves valve body 7 draws in to the center, leaves gap (referring to Fig. 2) between ball clack 6 and valve body 7 sealing surfaces; Handwheel 1 continues rotation, and guide finger 3 interacts in the guiding groove oblique fracture on valve rod 4, and valve rod 4 and wedge 5 are made rotating operation, and ball clack 6 is also with its rotation, and the runner hole 5.1 on the wedge 5 communicates (referring to Fig. 3) with runner hole on the valve body 7, and valve is all opened.

Otherwise, when the needs throttle down, the handwheel 1 that turns clockwise, guide finger 3 interacts in the guiding groove oblique fracture on valve rod 4, and valve rod 4, wedge 5 and ball clack 6 are made rotating operation, the runner hole dislocation on runner hole 5.1 and the valve body 7; Continue rotation hand wheel 1, guide finger 3 is the interaction in the guiding groove straight section on valve rod 4, and valve rod 4 and wedge 5 are descending, and ball clack 6 is close to valve body 7, and two sealing surfaces are adjacent to the formation sealing state on ball clack 6 and valve body 7, at this moment the valve Close All.

Because the utility model is when closing, wedge 5 is opposite with the direction of relative movement of ball clack 6, and the power that gravity that ball clack 6 is downward and wedge 5 make progress interacts, and therefore can not influence overlapping of its sealing surface and valve body sealing surface, thereby make sealing surface injury-free, improved working life greatly.

For the ease of installation of the present utility model, adjusting and guarantee the stable of its quality, the utility model also is provided with at the edge of ball clack 6 can passive bracer 6.1.

Technological scheme described in the present 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 will be done the adaptability conversion.

Claims

1, a kind of valve, comprise valve body, fixedly cover the bottom of this valve body lower end, the support of fixedlying connected with this valve body upper end, be installed in the handwheel that can rotate in this support, be equipped with the ball clack or the butterfly lobe of band sealing surface in the valve body, and the wedge that is equipped with the inclined-plane and acts on mutually by this inclined-plane and ball clack or butterfly lobe, these wedge central authorities have a runner hole, fixedly connected with wedge in the valve rod lower end, the upper end also is equipped with guiding groove by screw thread and handwheel engagement on the valve rod, be fixedly equipped with guide finger on the cradle wall, this guide finger interacts in the stem guiding groove, it is up that valve rod is done after the handwheel rotation, descending or rotatablely move, it is characterized in that: wedge inclined-plane and the formed angle of wedge upper-end surface horizontal line are greater than 90 degree, and wedge inclined-plane and the formed angle of wedge lower end surface horizontal line are spent less than 90.

2, valve according to claim 1 is characterized in that: also being equipped with on described ball clack or the butterfly lobe can passive bracer.