CN203413159U

CN203413159U - Ball valve

Info

Publication number: CN203413159U
Application number: CN201320437454.6U
Authority: CN
Inventors: 张更波
Original assignee: ZHEJIANG VALOGIN TECHNOLOGY Co Ltd
Current assignee: Adey Holdings 2008 Ltd
Priority date: 2013-07-19
Filing date: 2013-07-19
Publication date: 2014-01-29
Anticipated expiration: 2023-07-19

Abstract

The utility model provides a ball valve, belonging to the technical field of valves and solving the problems that an existing ball valve generates heat expansion and cold contraction due to a casting technology and the on and off of the ball valve is inaccurate to control. The ball valve consists of a handle and a valve body, wherein a valve rod is arranged in the valve body, the upper end of the valve rod penetrates out of the valve body, the handle is fixedly connected with the upper end of the valve rod, an arc groove is formed in the surface, close to the downside of the handle, of the valve body, a cylindrical limiting column protruding the lower surface of the handle is arranged at the lower end of the handle, the limiting column and the handle are in an integrated structure, and the limiting column is located in the arc groove and moves in the arc groove along with the rotation of the handle. The limiting column of the ball valve and the valve body are in an integrated structure, the limiting column is not easy to fall off from the valve body, and the structure is relatively stable; in addition, a limiting structure is formed directly on the handle and the valve body through machining, so that the on and off control of the ball valve is relatively accurate.

Description

A kind of ball valve

Technical field

The utility model belongs to valve technology field, relates to a kind of ball valve.

Background technique

Ball valve is a kind of common common valve, and ball valve is in complete conducting and to close this two states be completely directly related with the angle of valve core rotation.That is to say, while driving valve core rotation by handle, the limit structure that must have a rotation that makes handle to be restricted, just can make handle rotate back valve core can be accurately in unlatching completely or the state of closing completely.

In existing ball valve, normally on handle, be provided with position-limited claw, on valve body, by casting technique, establish a limited post that plays restriction position-limited claw slewing area.After handle turns an angle, by limited post, block position-limited claw, handle cannot be rotated further, to guarantee that ball valve is in opening or closed condition.

For example, Chinese utility model patent specification (application number: 200820087652.3, notice of authorization number: CN201206639Y) disclose a kind of ball valve, comprise valve body, ball valve core, valve seat, valve gap, valve rod, stuffing box packing, nut, handle, set screw nut, ball valve core is provided with valve rod draw-in groove, valve rod has the card arm matching with valve rod draw-in groove, top is provided with the fixedly valve rod being connected with handle, fixedly the joint of valve rod and valve rod is provided with reducing step, nut is gland nut, and the reducing step of its gland and valve rod matches.Its valve body is provided with the limited post matching with handle.

But because the limited post on valve body is produced by Forging Technology, product, because causing gear piece size to control accurately after expanding with heat and contract with cold, causes every batch, handle all will join with gear piece place is real, rear change handle angle, after can normally produce, manufacturing efficiency is on the low side.

Summary of the invention

The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of spacing ball valve comparatively accurately.

The purpose of this utility model can realize by following technical proposal: a kind of ball valve, comprise handle and valve body, in described valve body, be provided with valve rod, the upper end of described valve rod passes valve body, and described handle is connected in valve rod upper end, it is characterized in that, surface near handle below on described valve body has arc groove, the lower end of described handle has the limited post that protrudes from handle lower surface, and described limited post and handle are integral type structure, and described limited post is positioned at arc groove.

Limited post and handle are integral type structure, that is to say, limited post is directly in handle, at its lower end, to carry out machining shaping.The problem of having avoided limited post to come off and cause ball valve switch to lose efficacy from handle.Because limited post and arc groove are all by machining moulding, the problem of having avoided product size that after forging, product causes because of expanding with heat and contract with cold easily to change causing the switch of ball valve accurately to control.Limited post is along with the rotation of handle is rotated in arc groove, and when ball valve standard-sized sheet, limited post is positioned at one end of arc groove, and when ball valve complete shut-down, limited post is positioned at the other end of arc groove.

In above-mentioned ball valve, described handle comprises and is connected in the joint of valve rod upper end and is connected in the grip part for gripping on joint, described joint is tubular, and described joint lower end has the outside flange of ring, and described limited post is positioned at flange lower end.Such structure is set, makes this ball valve comparatively attractive in appearance.

In above-mentioned ball valve, the lower end of described handle reclines mutually with the surface near handle below on valve body.Handle shelters from locating column and arc groove, cannot directly see from outside locating column and arc groove, makes the structure of this ball valve comparatively compact, also comparatively attractive in appearance.

In above-mentioned ball valve, on described flange, there is a breach, on described valve body, near the surface below the joint of handle, there are the characters cut in intaglio of indication ball valve switch state, when ball valve standard-sized sheet, the breach of described flange is positioned in the characters cut in intaglio of indication ball valve full-gear, when ball valve complete shut-down, the breach of described flange is positioned in the characters cut in intaglio of indication ball valve complete shut-down state.Such structure, makes this ball valve in use, for convenience, intuitively.

In above-mentioned ball valve, the quantity of described limited post is two, and the quantity of described arc groove is two, and two limited posts lay respectively in two arc grooves.When ball valve complete shut-down, one of them limited post is resisted against one end of one of them arc groove, and another limited post is resisted against one end of another arc groove; But during ball valve standard-sized sheet, two limited posts are resisted against respectively the other end of two arc grooves.Even when wherein the cooperation of one group of limited post and arc groove was lost efficacy, another group limited post and arc groove still can be realized ball valve and close two states conversion.Two limited posts and two arc grooves are set respectively, make this ball valve more stable.

In above-mentioned ball valve, described limited post is that the shape at two ends and the shape of limited post of cylindrical, described arc groove matches.Such structure is set, has increased the area of contact between limited post and arc groove, make the structure of this ball valve more stable.

Compared with prior art, the limited post of this ball valve and handle are integral type structure, have avoided limited post come off and cause the situation that ball valve cannot normally be used to occur from handle.In addition, directly on handle and valve body, by machining, form limit structure, the problem of having avoided the product size that produces because of forging to change, thus make the switch of ball valve control comparatively accurate.

Accompanying drawing explanation

Fig. 1 is the explosive view with a kind of ball valve of this ball valve;

Fig. 2 is the explosive view of the other direction of the ball valve in Fig. 1.

In figure, 1, handle; 1a, limited post; 1b, flange; 1c, breach; 1d, grip part; 1e, joint; 2, valve body; 2a, arc groove; 2b, characters cut in intaglio; 3, valve rod; 4, screw.

Embodiment

Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.

The purpose of this utility model can realize by following technical proposal: a kind of ball valve, comprise handle 1 and valve body 2, and in valve body 2, be provided with valve rod 3, the upper end of valve rod 3 passes valve body 2.The surface that approaches handle 1 lower end on valve body 2 is round structure, the surface of the lower end of handle 1 is cirque structure, the external diameter of the surperficial cirque structure of the diameter of the round structure of the upper surface of valve body 2 and handle 1 lower end equates, and handle 1 reclines mutually with valve body 2.

Handle 1 comprises the joint 1e being connected with valve rod 3 upper ends, is fixed with the grip part 1d for gripping of strip on joint 1e.The side of valve rod 3 upper ends has the plane with the coaxial setting of valve rod 3, and the shape of the shape of the inside of joint 1e and valve rod 3 upper ends matches, and while making handle with sleeve 1, handle 1 can be with ovable valve stem 3 to rotate, thereby controls the switch of ball valve.Handle 1 upper end has a through hole, is equipped with screw 4 in through hole, and the upper end of valve rod 3 has tapped hole, and screw 4 is located handle 1 mutually with valve rod 3.Shapes inner by handle 1 and valve rod 3 upper ends match and the effect of screw 4, and handle 1 is connected in valve rod 3 upper ends.

The lower end of handle 1 has the outside flange 1b of ring, has a breach 1c on flange 1b, and valve body 2 upper surfaces have the characters cut in intaglio 2b of indication ball valve switch state.Valve body 2 upper surfaces are carved with " ON " printed words that represent ball valve full-gear and " OFF " printed words that represent ball valve complete shut-down state.When ball valve standard-sized sheet, the breach 1c of described flange 1b is positioned on " ON " printed words, and user can see complete " ON " printed words, and when ball valve complete shut-down, the breach 1c of described flange 1b is positioned on " OFF " printed words, and user can see complete " OFF " printed words.As another kind of scheme, " ON " printed words also available " opening " replace, and " OFF " printed words also available " pass " replace.

In order to reach the accurate control of ball valve switch, surface near handle 1 below on valve body 2 is formed with an arc groove 2a by machining, arc groove 2a departs from the edge of valve body 2 upper surfaces, that is to say, between arc groove 2a and the edge of valve body 2 upper surfaces, has certain distance.The lower end of the flange 1b of handle 1 has the limited post 1a that protrudes from handle 1 lower surface forming by machining, and limited post 1a is cylindric.Correspondingly, the shape of the shape at arc groove 2a two ends and limited post 1a matches.Limited post 1a and valve body 2 are integral type structure.

After installation between handle 1 and valve body 2, limited post 1a is positioned at arc groove 2a, and when limited post 1a goes to the two ends of arc groove 2a along with handle 1, ball valve is respectively in standard-sized sheet and complete shut-down state.

Limited post 1a and handle 1 are integral type structure, that is to say, limited post 1a directly carries out machining shaping in handle 1 lower end.Because limited post 1a and arc groove 2a are by machining moulding, the problem of having avoided product size that after forging, product causes because of expanding with heat and contract with cold easily to change causing the switch of ball valve accurately to control.

As another kind of scheme, the quantity of limited post 1a is two, and the quantity of arc groove 2a is two.When ball valve complete shut-down, one of them limited post 1a is resisted against one end of one of them arc groove 2a, and another limited post 1a is resisted against one end of another arc groove 2a; But during ball valve standard-sized sheet, two limited post 1a are resisted against respectively the other end of two arc groove 2a.When wherein the cooperation of one group of limited post 1a and arc groove 2a was lost efficacy, another group limited post 1a and arc groove 2a still can realize ball valve and close two states conversion.Such structure is set, makes this ball valve more stable.

As the another kind of scheme of easily expecting, arc groove is arranged on the lower end of handle, and limited post is arranged on the upper surface of valve body, and limited post and valve body are integral type structure.

Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although more used the terms such as handle 1, limited post 1a, flange 1b, breach 1c, grip part 1d, joint 1e, valve body 2, arc groove 2a, characters cut in intaglio 2b, valve rod 3, screw 4 herein, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.

Claims

1. a ball valve, comprise handle (1) and valve body (2), in described valve body (2), be provided with valve rod (3), the upper end of described valve rod (3) passes valve body (2), described handle (1) is connected in valve rod (3) upper end, it is characterized in that, the upper surface near handle (1) below of described valve body (2) has arc groove (2a), the lower end of described handle (1) has the limited post (1a) that protrudes from handle (1) lower surface, described limited post (1a) is integral type structure with handle (1), described limited post (1a) is positioned at arc groove (2a).

2. ball valve according to claim 1, it is characterized in that, described handle comprises being connected in the joint (1e) of valve rod (3) upper end and being connected in joint (1e) goes up the grip part (1d) for gripping, described joint (1e) is tubular, described joint (1e) lower end has the outside flange (1b) of ring, and described limited post (1a) is positioned at flange (1b) lower end.

3. ball valve according to claim 1 and 2, is characterized in that, the lower end of described handle (1) reclines mutually with the upper surface near handle (1) below of valve body (2).

4. ball valve according to claim 2, it is characterized in that, on described flange (1b), there is a breach (1c), the surface of the upper joint (1e) near handle (1) of described valve body (2) below has the characters cut in intaglio (2b) of indication ball valve switch state, when ball valve standard-sized sheet, the breach (1c) of described flange (1b) is positioned in the characters cut in intaglio (2b) of indication ball valve full-gear, when ball valve complete shut-down, the breach (1c) of described flange (1b) is positioned in the characters cut in intaglio (2b) of indication ball valve complete shut-down state.

5. according to the ball valve described in claim 1 or 2 or 4, it is characterized in that, the quantity of described limited post (1a) is two, and the quantity of described arc groove (2a) is two, and two limited posts (1a) lay respectively in two arc grooves (2a).

6. according to the ball valve described in claim 1 or 2 or 4, it is characterized in that, described limited post (1a) is that the shape at two ends and the shape of limited post (1a) of cylindrical, described arc groove (2a) matches.