CN2596125Y

CN2596125Y - Ceramic plant gate valve

Info

Publication number: CN2596125Y
Application number: CN 03204550
Authority: CN
Inventors: 周姝杰; 杨晓兰; 王勇; 张艳伟; 王巨轮
Original assignee: Daqing Petroleum Administration Bureau
Current assignee: Daqing Petroleum Administration Bureau
Priority date: 2003-02-24
Filing date: 2003-02-24
Publication date: 2003-12-31
Anticipated expiration: 2013-02-24

Abstract

The utility model relates to a ceramic plate gate valve, which mainly solves the problem that valves in the prior art seriously corrodes liquid and has poor sealing effect. The utility model is characterized in that the lower end of a clamp type valve body (1) is fixed by a screw bolt (8) with a spring (9), and the binding surface between a valve plate (3) and a shim plate (5) is embedded with ceramic surfaces (2, 4). The utility model has the characteristics of corrosion resistance, abrasion resistance, good sealing effect, small moment for opening and closing and long service life.

Description

The earthenware slab gate valve

Technical field:

The utility model relates to the storage and transportation apparatus of fluid, belongs to a kind of earthenware slab gate valve.

Background technique:

In the storage and transport process of fluid, generally all adopt the valve controlling flow body to realize banishing process with shutoff, the valve of using has a variety of as ball valve at present, gate valve etc., but the direct contact surface with the fluid thing in these valves are worked as is metal covering or alloy face mostly, these surface of contact are to be welded on the valve body and with surface polishing, its corrosion resistant performance is very poor, in industrial serious corrosion sealing surface do not have the effect of sealing, cause leakage, sometimes in order to make sealing effect better, will be by the lengthening flashboard, when the moving up and down of flashboard, play the effect of sealing, this corrosion products convection cell also has very big pollution simultaneously, particularly the purity of convection cell has had bigger influence, impurity is many, these impurity enter fluid can bring very big harm to production, during the having of these problems even cause immeasurable loss; Whether moreover long-term corrosion also can make those be in the valve of closing with opening state for a long time and cause sluggish state, open or not when looking on the bright side of things, and thinks that Guan Shiguan does not go up, and has lost the effect of valve, and the life-span of valve is reduced greatly, has increased cost of production.

The model utility content:

In order to overcome valve convection cell seriously corroded of the prior art, the bad deficiency of sealing effect, the utility model provides a kind of earthenware slab gate valve, and it is pollution-free that this gate valve convection cell does not have burn into, good sealing effect, cancelled upper sealing device, simple in structure, be easy to realize assembling.

The technological scheme that the utility model adopted is: in the lower end of the wafer type valve body bolt that has spring, the faying surface place of valve plate and backing plate embeds ceramic plane.

The beneficial effects of the utility model are: owing to adopt ceramic seal face and external pretightening force device, make that this Gate-valve sealing is effective, the burn into of having eliminated convection cell pollutes, have corrosion-resistant, resistance to wear, the characteristics of good sealing effect, it is little not only to open and close moment, and working life is also long.

Description of drawings:

Fig. 1 is a structure sectional view of the present utility model.

1-valve body among the figure, 2-ceramic plane, 3-valve plate, 4-ceramic plane, 5-backing plate, 6-handwheel, 7-fluid pipe-line, 8-bolt, 9-spring, 10-fluid pipe-line.

Embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

Shown in Fig. 1, a kind of earthenware slab gate valve is made up of valve body 1, valve plate 3 and handwheel 6,

Lower end at wafer type valve body 1 is fixing with the bolt 8 that has spring 9, as external pretightening force device, make the better combination in valve plate two sides, increase pretightening force, the pressure that needs by the assurance of nut compressing spring during installation, in the faying surface place embedding ceramic plane (2 of valve plate 3 with backing plate 5,4), backing plate 5 is for two ceramic plane fully being cooperated, better playing seal action, owing to adopted ceramic plane as sealing surface, make sealing effect fine, therefore cancelled upper sealing device in the past, make the structure of whole valve more simple, easy to operate, the more important thing is convection cell not corrosion and pollution.

When in use handwheel 6 being made progress turn, valve is in opening state, and fluid pipe-line 7 is relative with fluid pipe-line 10, this moment, fluid can straightwayly flow through, when the downward turn of handwheel 6, fluid pipe-line 7 staggers with fluid pipe-line 10, finishes seal action by ceramic plane.

Claims

1, a kind of earthenware slab gate valve, form by valve body (1), valve plate (3) and handwheel (6), it is characterized in that: the lower end at wafer type valve body (1) is fixing with the bolt (8) that has spring (9), and valve plate (3) embeds ceramic plane (2,4) with the faying surface place of backing plate (5).