CN2365466Y

CN2365466Y - Soft sealing wedge type sluice valve

Info

Publication number: CN2365466Y
Application number: CN 98245478
Authority: CN
Inventors: 杨文义
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-10-22
Filing date: 1998-10-22
Publication date: 2000-02-23
Anticipated expiration: 2008-10-22

Abstract

The utility model relates to a soft sealing wedge type gate valve. Two sealing surfaces of a valve body or a valve plate of the gate valve both can be respectively provided with a rectangle-shaped ring slot; two soft sealing rings of which the cross sections are rectangle-shaped are embedded in the respective rectangle-shaped ring slot by the method of pressing. Compared with the similar soft sealing gate valves, the utility model has the characteristics of simple structure, easy manufacture, reduction of manufacture precision and cost, enhancement of sealing performance and abrasion and corrosion resistance, reduction of opening and closing force moment, and extension of service life. The utility model can be used for transport pipelines of water, oil, and gas.

Description

The soft seal Wedge gate valve

The utility model relates to a kind of pipeline valve, particularly a kind of soft seal Wedge gate valve, and it mainly comprises valve body, be arranged on valve plate, the valve rod in the valve body and be installed in the handwheel of valve rod upper end and composition such as valve gap.

Traditional gate valve, the structural types that adopt rigidity contact seal more, be that sealing surface is a metal, because metallic material elasticity is little, rigidity is big, on sealing surface, need be added with bigger specific pressure, could form effectively sealing, so need with the bigger moment of closing, unlatching moment that also will be bigger when opening equally when closing.

At present in the prior art, a kind of gate valve of the soft sealing structure form relevant with the utility model is disclosed, as CN2063997U, its structure is made up of valve body, valve gap, driving end and valve rod four parts, be characterized in that valve rod valve plate that be with the lower end is to be formed by the rubber material parcel, certainly will adopt the rubber vulcanization process method that each valve plate is wrapped up processing like this, its complex process, not only cost up but also only be suitable for low voltage operated.The disclosed in addition patent ZL94247474.0 similar to the utility model, include valve body, valve rod and valve plate, being characterized in that seal ring and rubber pad are buckled in by screw or spiral shell together carries out mechanical fixation on valve body, the valve plate, its complex structure, screw processing difficulties in the valve body flowing hole, seal ring is more with material, cost up.

The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, and provides a kind of simple in structure, and is easy to operate, and sealing is reliable, and the Applicable media scope is wide, and wear-resisting corrosion is strong, and switch moment is little, the soft seal Wedge gate valve of long service life.

The purpose of this utility model adopts following measure to realize:

Soft seal Wedge gate valve of the present utility model, it mainly comprises valve body, be arranged on valve plate, the valve rod in the valve body and be installed in the handwheel of valve rod upper end and composition such as valve gap, on Wedge gate valve valve body two sealing surfaces, directly respectively make a rectangle annular groove, with the cross section is two soft seal rings of rectangle, is embedded in each rectangle annular groove with the method that is pressed into.Equally also can be on valve plate two soft sealing faces, each makes a rectangle annular groove, uses the same method, and two soft seal rings are embedded in each rectangle annular groove.

The utility model compared with prior art has following advantage:

1, because the utility model soft seal Wedge gate valve, be on the basis of general Wedge gate valve, to have set up soft elastic sealing ring to make valve seal and usability be greatly improved, adopt the sealing structure when valve closing, its switch moment greatly reduces, after soft sealing face uses inefficacy for a long time, the metalwork sealing surface of valve will play seal action, so in fact the utility model has the double action of soft contact seal and rigidity contact seal.

2, the inside and outside circle because of rectangle soft seal ring of the present utility model has certain magnitude of interference with respect to the rectangle annular groove on valve body or the valve plate, be pressed into the back and guarantee that it is solid and reliable, remove sealing surface in addition, other three face of rectangle soft seal ring all is subjected to the constraint of metal, and the compression capability of soft seal ring is greatly improved.

3, because on the utility model valve body or valve plate two sealing surfaces, can make a rectangle annular groove separately, and be two soft seal rings of rectangle with the cross section, be embedded in separately in the rectangle annular groove with the method that is pressed into, so the utility model is simple in structure, make easily, when reducing accuracy of manufacturing and cost, improved sealability again, wear-resisting, corrosion resisting property, reduce switch moment, and prolonged working life.The utility model can be used in the conveyance conduit of water, oil, gas.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

Fig. 1: plan view of the present utility model

Fig. 2: valve body capel sealed structural representation of the present utility model

Fig. 3: valve plate capel sealed structural representation of the present utility model

The valve rod (3) that the utility model soft seal Wedge gate valve shown in Figure 1 combines by valve body (1), valve plate (2), with valve plate and be installed in handwheel (4) on the valve rod and valve gap (5) etc. is formed.Fig. 2 has provided on valve body two sealing surfaces (6), directly respectively make a rectangle annular groove (7), with the cross section is two soft seal rings (8) of rectangle, be embedded in each rectangle annular groove (7) with the method that is pressed into, Fig. 3 represents equally also can be on valve plate two sealing surfaces (9), each makes a rectangle annular groove (10), and the method with being pressed into is embedded in two soft seal rings (8) in each rectangle annular groove (10).

The inside and outside circle of rectangular seal ring has certain magnitude of interference with respect to the rectangle annular groove on valve body or the valve plate, make it solid and reliable after being pressed into, remove sealing surface in addition, other three face of rectangle soft seal ring all is subjected to the constraint of metal, and the compression capability of soft seal ring is greatly improved.

Claims

1, the utility model relates to a kind of soft seal Wedge gate valve, it mainly by valve body (1), be arranged on valve plate (2), the valve rod (3) in the valve body and be installed in handwheel (4) on the valve rod and valve gap (5) etc. is formed, it is characterized in that: on valve body two sealing surfaces (6) of Wedge gate valve, directly respectively make a rectangle annular groove (7), with the cross section be rectangle two soft seal rings (8), be embedded in each rectangle annular groove (7) with the method that is pressed into.

2: soft seal Wedge gate valve according to claim 1, it is characterized in that: on valve plate (2) two sealing surfaces (9) of Wedge gate valve, also can respectively make a rectangle annular groove (10), be that two seal rings (8) of rectangle are embedded in each rectangle annular groove (10) with method of press-fitting with the cross section.