CN2818943Y

CN2818943Y - Manual piston cut-off valve

Info

Publication number: CN2818943Y
Application number: CN 200520051351
Authority: CN
Inventors: 宋国才; 刘卫辉; 宋国波
Original assignee: Hunan Xiang'an Special Electromagnetic Valve Co Ltd
Current assignee: Hunan Xiang'an Special Electromagnetic Valve Co Ltd
Priority date: 2005-07-09
Filing date: 2005-07-09
Publication date: 2006-09-20
Anticipated expiration: 2015-07-09

Abstract

The utility model relates to a manual cut-off valve, particularly a piston type manual cut-off valve. The utility model is provided with a valve body (1), a valve cover (11) and a valve seat (30). The utility model is characterized in that an upper valve cavity (7) and a lower valve cavity (8) are arranged in the valve body (1), a piston valve mechanism (5) is arranged in the upper valve cavity (7), and a manual opening and closing mechanism (29) is arranged in the lower valve cavity (8). The utility model has the characteristics of quick opening and closing, labor-saving operation, convenient use, long service life, compact structure, etc., and is a novel manual cut-off valve.

Description

The piston type hand stop valve

Technical field the utility model relates to a kind of hand stop valve, particularly the piston type hand stop valve.

No matter the existing hand stop valve of background technique is gate valve, ball valve, or butterfly valve, all has a little problems: the one, open, the switching time is long, and be not suitable for requiring the instantaneous occasion use of opening of closing; The 2nd, outside valve lever was exposed to, burn into became rusty admittedly, twists off easily; The 3rd, require great effort during open and close, particularly large-scale gate valve, all the more so; The 4th, be prone to the phenomenon that is not closed completely; The 5th, man-operated mechanism takes up room greatly, the highdensity piping erection of incompatibility.

It is rapid that the summary of the invention the purpose of this utility model is to disclose a kind of keying, and rapid operation, valve (cunning) bar are difficult for burn into and become rusty admittedly, twist off, easy to use, life-span is long, and man-operated mechanism takes up room little, can adapt to the piston type hand stop valve that the high density pipeline is installed.

Technical solution of the present utility model is: a kind of piston type hand stop valve, have valve body, valve gap and valve seat, its special way is to be provided with uuper valve chamber and lower valve chamber in valve body, is provided with piston valve mechanism in uuper valve chamber, is provided with manual opening-closing mechanism in lower valve chamber.

Piston valve mechanism in the utility model technical solution, can by the piston sleeve that has through hole in side, its underpart, be located at side, its underpart in the piston sleeve have through hole piston, be located at having of piston base of hollow pressure release valve seat spool, be enclosed within cover core nut on the pressure release valve seat, be located at its upper end in the cover core nut pass needle seal that cover core nut links to each other with slide bar, be enclosed within Returnning spring on the slide bar, be located at the spool bottom the leakage cover, be located at the push rod that leaks in overlapping and formed.

Manual opening-closing mechanism in the utility model technical solution can be by dial axis, fixedly the excentric sleeve, the pusher dog that is located at dial axis the inner, the handle that is located at the dial axis outer end of dial axis are formed.

The utility model is owing to adopted above technological scheme, and its keying speed is fast, can realize instantaneous open and close, operate and very laborsaving, the slide bar that connects valve is totally-enclosed in valve pocket, does not link to each other with handle again, so it is solid to be difficult for the burn into rust, the phenomenon that can occur twisting off not, easy to use, reliable operation, the life-span is long, handle takes up room little with activity space, is suitable for highdensity piping erection.

Appended drawings is a plan view of the present utility model.

A kind of piston type hand stop valve of embodiment, be provided with valve body [1], there is valve gap [11] at top at valve body [1] with solid the standing of bolt [6], be pressed with asbestos slate [31] between valve gap and the valve body, the open circles tubular of its upper end closed that raises up is made at valve gap [11] middle part, in valve body [1], be provided with epicoele [7] and cavity of resorption [8], be provided with valve seat [30] between the upper and lower cavity, in epicoele, be provided with piston valve mechanism [5], be provided with manual opening-closing mechanism [29] in the cavity of resorption, piston valve mechanism [5], be provided with piston sleeve [3], piston [15], the lower end side of piston sleeve and piston all has through hole, the bottom of piston [15] is provided with spool [2], central authorities at spool [2] are provided with the hollow pressure release valve seat [32] that passes the piston bottom surface, hollow pressure release valve seat [32] outside is arranged with core nut [13], the side of cover core nut [13] has through hole, in cover core nut, be provided with its upper end and pass the needle seal [9] that cover core nut links to each other with slide bar [10], slide bar [10] can slide in the hollow cylinder of valve gap [11], the outer Returnning spring [12] that is with of slide bar [10], spring [12] preferably adopts volute spring, the bottom center of spool [2] is provided with leaks cover [25], leaking cover [25] is hollow shape, lower side has Leak hole, the centre of leaking cover [25] is provided with push rod [24], and round pie is preferably made in the bottom of push rod [24].Manual opening-closing mechanism [29], be provided with dial axis [21], the inner of dial axis is provided with pusher dog [22], can be provided with on the pusher dog and pull out wheel [23], dial axis [21] is with axle sleeve [20], and be fixed on the valve body [1] with bolt [26], the outer end of dial axis [21] is provided with gland nut [19] successively, handle [14] and fastening screw nut [17], the outer end of dial axis [21] axle [21] is provided with gland nut [19] successively, handle [14] and fastening screw nut [17], be provided with O shape rubber seal [18] and [27] between dial axis [21] and the axle sleeve [20], be provided with O shape rubber seal [28] between axle sleeve [20] and the valve body [1], on the valve body of handle one side, be provided with handle locating stud [33].

Working principle of the present utility model is: handle with sleeve [14], pusher dog [22] upwards commentaries on classics promotes to move on the push rod [24], push needle seal [9] open, the flowing medium of epicoele [7] is by leaking cover [25] decompression, meanwhile be rotated further handle [14], pusher dog [22] promotes to move on the piston [15] by the push rod bottom, and spool [2] is opened.Flowing medium enters cavity of resorption [8] by epicoele [7], locating stud is held open the handle location, when closing, counter-rotation handle [14], pusher dog [22] leaves push rod [24], and slide bar [10] is under the promotion of Returnning spring [12], drive piston [15] and move down the blocking-up media flow, meanwhile needle seal [9] also moves down, sealing pressure release valve seat [32], and valve is in buttoned-up status.

Claims

1, a kind of piston type hand stop valve, have valve body [1], valve gap [11] and valve seat [30], it is characterized in that: in valve body [1], be provided with uuper valve chamber [7] and lower valve chamber [8], in uuper valve chamber [7], be provided with piston valve mechanism [5], in lower valve chamber [8], be provided with manual opening-closing mechanism [29].

2, a kind of piston type hand stop valve according to claim 1, it is characterized in that: piston valve mechanism [5], by the piston sleeve [3] that has through hole in side, its underpart, be located at side, its underpart in the piston sleeve [3] and have the piston [15] of through hole, be located at the spool [2] that has hollow pressure release valve seat [32] of piston [15] bottom, be enclosed within the cover core nut [13] on the pressure release valve seat, be located in the cover core nut and pass the needle seal [9] that cover core nut links to each other with slide bar [10] on it, be enclosed within the Returnning spring [12] on the slide bar, be located at the leakage cover [25] of spool bottom, being located at the push rod [24] that leaks in the cover [25] forms.

3, a kind of piston type hand stop valve according to claim 1, it is characterized in that: manual opening-closing mechanism [29], by dial axis [21], fixedly pull out axle [21] axle sleeve [20], be located at pull out the inner pusher dog [22] of axle, be located at pull out axle [21] outer end handle [14] all form.

4, a kind of piston type hand stop valve according to claim 1 is characterized in that: the open circles tubular of its upper end closed that raises up is made at valve gap [11] middle part.

5, according to claim 2 or 4 described a kind of piston type hand stop valves, it is characterized in that: slide bar [10] kink is in valve gap [11].

6, a kind of piston type hand stop valve according to claim 3, it is characterized in that: pusher dog [22] is provided with thumb wheel [23].