CN202032100U

CN202032100U - Bellows stop valve

Info

Publication number: CN202032100U
Application number: CN2011201422252U
Authority: CN
Inventors: 程兴炎
Original assignee: Zhejiang Wanlong Machinery Co Ltd
Current assignee: Zhejiang Wanlong Machinery Co Ltd
Priority date: 2011-05-07
Filing date: 2011-05-07
Publication date: 2011-11-09
Anticipated expiration: 2021-05-07

Abstract

The utility model relates to a bellows stop valve, which comprises a valve body, a valve cover, a bellows, a valve rod, a hand wheel and a valve clack. The valve cover is fixedly connected with the valve body through a bolt, one end of the valve rod is connected with the valve clack, and the bellows is sleeved on the valve rod. The bellows stop valve is characterized by further comprising a valve rod nut, a sealing cover and a locating pin. One end of the valve rod is provided with a lead screw, and the valve rod nut is sleeved on the lead screw and fixedly connected with the hand wheel. The sealing cover is fixed between the valve body and the valve cover, one end of the bellows is fixed with the sealing cover, and the other end of the bellows is fixed with the valve clack. The valve body is provided with a clamping groove, and the locating pin is fixed on the valve rod and clamped onto the clamping groove in sliding mode. The bellows stop valve is reasonable in structural design, simple in structure, low in cost and convenient to use.

Description

Bellows stop valve

Technical field

The utility model relates to a kind of bellows stop valve.

Background technique

Referring to accompanying drawing 1, the bellows stop valve of prior art comprises parts such as handwheel, upper valve rod, anti-switch block, lower valve rod, bellows, valve gap, flap, valve body, double end column.

The bellows stop valve complex structure of existing structure, wherein embody as follows:

1, valve opening and close by rotation hand wheel and drive the upper valve rod lifting, the lifting of upper valve rod drives lower valve rod by anti-switch block and does elevating movement and keep not rotating, and realize by the double end column location of anti-switch block.A series of like this motion needs that the cooperation of parts such as handwheel, upper valve rod, anti-switch block, double end column, lower valve rod finishes.

2, bellows is substantially in the valve gap inner chamber, and one links together with valve rod by welding, and the other end also links together by welding and valve gap, and whole compression and the stroke that draws high are very long, have wasted a lot of materials of part, have improved cost.

3, since bellows in the endoporus of valve gap, the impurity in the valve pocket is not easy to remove clean, for as oxygen, hydrogen etc. concerning the exigent valve of runner turbidity test, be to be difficult to meet the requirements of, cause and use inconvenience.

The model utility content

Technical problem to be solved in the utility model is to overcome existing above-mentioned shortcoming in the prior art, and a kind of reasonable in design, simple for structure, bellows stop valve that cost is low, easy to use are provided.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of bellows stop valve comprises valve body, valve gap, bellows, valve rod, handwheel and flap; Valve gap is fixedlyed connected with valve body with bolt; Valve rod one end is connected with flap; Bellows is sleeved on the valve rod; It is characterized in that: also comprise Stem Mut, seal closure, locating stud; Valve rod one end is split into screw mandrel, and Stem Mut is sleeved on the screw mandrel, and fixedlys connected with handwheel; Seal closure is fixed between valve body and the valve gap, and bellows one end and seal closure are fixed, and the other end and flap are fixed; Have draw-in groove on valve body, locating stud is fixed on the valve rod, and card is connected on the draw-in groove.

The utility model compared with prior art has the following advantages and effect: 1, reasonable in design, simple for structure, cost is low, easy to use.

Description of drawings

Fig. 1 is the prior art constructions schematic representation.

Fig. 2 is the utility model embodiment's a structural representation.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and by embodiment.

Embodiment: referring to Fig. 2, the utility model comprises valve body 1, valve gap 2, bellows 3, valve rod 4, handwheel 5, flap 6, Stem Mut 7, seal closure 8, locating stud 9.

Valve gap 2 usefulness bolts are fixedlyed connected with valve body 1.

Valve rod 4 one ends are connected with flap 6, and the other end is split into screw mandrel 11.Stem Mut 7 is sleeved on the screw mandrel 11, and is connected with screw mandrel 11 spirals, and Stem Mut 7 is also fixedlyed connected with handwheel 5.Have draw-in groove 10 on valve body 1, locating stud 9 is fixed on the valve rod 4, and card is connected on the draw-in groove 10.Valve opening and rotating band ovable valve stem 4 liftings of closing by the Stem Mut 7 that cooperates with handwheel 5, and be that locating stud 9 is done elevating movement and do not made valve rod 4 rotations along 10 of draw-in grooves when valve rod 4 liftings, only this device has substituted parts such as upper valve rod of the prior art, anti-switch block, double end column.

Seal closure 8 is fixed between valve body 1 and the valve gap 2.Bellows 3 is sleeved on the valve rod 4, and one end and seal closure 8 welding are fixing, and the other end and flap 6 welding are fixing.This structure makes bellows 3 by the outside of changing in the inner chamber of valve gap 2 at valve gap 2, make the easier removing of impurity in the runner cavity clean like this, simultaneously, also easier the outer impurity by valve lever clearance especially of valve is blocked in outside the runner cavity fully, has played better sealability.This structure can be saved the material of numerous parts in addition.

The utility model has been saved part material, makes the simple of complicated structure change, makes the easy removing of the structure change that impurity is not easy to remove in the runner cavity.

Claims

1. a bellows stop valve comprises valve body, valve gap, bellows, valve rod, handwheel and flap; Valve gap is fixedlyed connected with valve body with bolt; Valve rod one end is connected with flap; Bellows is sleeved on the valve rod; It is characterized in that: also comprise Stem Mut, seal closure, locating stud; Valve rod one end is split into screw mandrel, and Stem Mut is sleeved on the screw mandrel, and fixedlys connected with handwheel; Seal closure is fixed between valve body and the valve gap, and bellows one end and seal closure are fixed, and the other end and flap are fixed; Have draw-in groove on valve body, locating stud is fixed on the valve rod, and card is connected on the draw-in groove.