CN2871988Y

CN2871988Y - Cut-off valve of bellows

Info

Publication number: CN2871988Y
Application number: CN 200520144629
Authority: CN
Inventors: 金克雨
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-20
Filing date: 2005-12-20
Publication date: 2007-02-21
Anticipated expiration: 2015-12-20

Abstract

The utility model relates to a bellow sealed globe valve, comprising a hand wheel 1, a valve rod nut 2, a packing bushing 3, packing 4, a valve rod 5, a position pin 6, a valve cap 7, a seal plate 8, a bolt 9, a valve body 10, a bellow sealed component 11 and a valve segment 12; wherein, the bellow sealed component, of which the upper is jacketed by the double deck seal plate 8, is arranged at the place connecting the valve cap 7 and the valve body 10 and is tightened by the bolt 9. The utility model is characterized in that a bellow lower part of the bellow sealed component 11 is connected with the valve segment 12 as a whole body by welding at the end of the bellows and is arranged inside the valve body 10; the valve rod 5 is threaded connected with the valve segment 12. The bellow sealed component and the valve segment can be repositioned by stopping the pipeline and unscrewing the bolt at the valve cap, if the valve segment and the bellows are out of service, thus the model is convenient to repair. In addition, as the total height of the valve decreases, more primary material can be saved and the cost can be reduced, thus the market competition can be improved.

Description

Bellows stop valve

Technical field:

The utility model relates to a kind of valve, is meant a kind of bellows stop valve that uses on the pipeline of conveying gas or liquid especially.

Background technique:

Existing bellows stop valve (see figure 1), form by handwheel, Stem Mut, filler gland, filler, valve rod, locating stud, valve gap, sealing gasket, bolt, valve body, bellows component and flap, wherein, bellows lower end and valve rod are weldingly connected, and are linked to each other with flap by valve rod again; The bellows upper end is fixed at valve gap and valve body joint by the double-layer seal pad.

The shortcoming that exists is:

(1) bellows stop valve of the prior art, bellows is installed unreasonable, and the valve body of valve is also corresponding to be increased, and has wasted raw material like this.

(2) end and the valve rod of bellows are welded as a whole, repair and replacement inconvenience.

Summary of the invention:

The purpose of this utility model is to shorten the whole height of valve, saves the raw material of valve, with bellows component directly and flap be welded as a whole.This bellows stop valve, comprise handwheel, Stem Mut, filler gland, filler, valve rod, locating stud, valve gap, sealing gasket, bolt, valve body, bellows component and flap, wherein, bellows component top is with the double-layer seal pad, be placed on valve gap and valve body joint, be tightened, it is characterized in that by bolt: the bellows lower end directly and flap be welded as a whole, be placed in the valve body, valve rod and flap Placement are for being threaded or steel ball card links and connects or steel wire ring buckle is connected.

Beneficial effect is: because bellows one end is fixed at valve gap and valve body joint by bolt, the other end of bellows is welded as a whole mutually with flap, as long as stop the pipeline operation during like this as flap and bellows fault, the bolt of opening the valve gap place is with regard to replaceable bellows component and flap, and is easy to maintenance.The overall height of valve shortens, thereby has saved a large amount of raw material, and entreprise cost is descended, and has improved the market competitiveness of like product enterprise.

Description of drawings:

Fig. 1 is existing bellows stop valve structural representation.

Fig. 2 is the utility model bellows stop valve structural representation.

Fig. 3 is the utility model bellows stop valve assembling schematic representation.

Fig. 4 is one of valve rod and flap Placement.

Fig. 5 is two of valve rod and a flap Placement.

Fig. 6 is three of valve rod and a flap Placement.

Embodiment:

See accompanying drawing 2～Fig. 4, the utility model is a bellows stop valve, comprise handwheel 1, Stem Mut 2, filler gland 3, filler 4, valve rod 5, locating stud 6, valve gap 7, sealing gasket 8, bolt 9, valve body 10, bellows component 11 and flap 12, wherein, bellows component top is with double-layer seal pad 8 and is placed on valve gap 7 and valve body 10 joints, be tightened by bolt 9, it is characterized in that: the bellows lower end in the bellows component 11 directly and flap 12 be welded as a whole, be placed in the valve body 10, valve rod 5 and flap 12 Placements are for being threaded.

See accompanying drawing 5, valve rod 5 and flap 12 Placements are that steel ball card links and connects.

See accompanying drawing 6, valve rod 5 is that steel wire ring buckle is connected with flap 12 Placements.

Claims

1, a kind of bellows stop valve, comprise handwheel (1), Stem Mut (2), filler gland (3), filler (4), valve rod (5), locating stud (6), valve gap (7), sealing gasket (8), bolt (9), valve body (10), bellows component (11) and flap (12), wherein, bellows component (11) top is with double-layer seal pad (8) and is placed on valve gap 7) and valve body (10) joint, be tightened by bolt (9), it is characterized in that: the bellows lower end in the bellows component (11) directly and flap (12) be welded as a whole, be placed in the valve body (10), valve rod (5) and flap (12) Placement are for being threaded or steel ball card links and connects or steel wire ring buckle is connected.