CN208237112U - Soft seal iron powder special service valve - Google Patents

Abstract

The utility model belongs to valve technology field, more particularly to soft seal iron powder special service valve, valve rod including controlling flashboard opening and closing on valve body, the round flashboard of body cavity, valve body, the flashboard side wall opposite with body cavity wall surface is equipped with groove, flashboard side wall and body cavity wall surface are equipped with gap, be embedded in the groove can pressurising expansion plugging gap sealing ring, flashboard, stem internal are equipped with the pressurising pipeline that pressurising is carried out to sealing ring, the friction between flashboard and body cavity wall is avoided, there is longer service life.

Description

Soft seal iron powder special service valve

Technical field

The utility model belongs to valve technology field, and in particular to soft seal iron powder special service valve.

Background technique

It needs to use control valve in the transportation system of iron powder, conveyance conduit in iron powder transportation system is controlled by control valve Opening and closing, control valve generally use butterfly valve, and the flashboard of butterfly valve is generally made of hard materials such as metal or plastics, in use, The opening and closing of flashboard can make the friction between flashboard and the internal chamber wall of valve body back and forth, then cause the abrasion of valve body, make control valve failure, The service life for shortening valve body, causes the raising of production cost, and iron powder is easily accessible between flashboard and internal chamber wall, in flashboard In opening and closing, it is further exacerbated by abrasion.

Utility model content

Technical problem to be solved in the utility model is in view of the foregoing drawbacks, to provide soft seal iron powder special service valve, avoid Friction between flashboard and body cavity wall has longer service life.

The utility model solve its technical problem the technical solution adopted is as follows:

Soft seal iron powder special service valve, the valve including controlling flashboard opening and closing on valve body, the round flashboard of body cavity, valve body Bar, the flashboard side wall opposite with body cavity wall surface are equipped with groove, and flashboard side wall and body cavity wall surface are equipped with gap, Be embedded in the groove can pressurising expansion plugging gap sealing ring, flashboard, stem internal be equipped with sealing ring is filled The pressurising pipeline of pressure, the setting in gap make not contact between flashboard and body cavity wall, effectively avoid abrasion, extend making for valve With the service life, gap is blocked after sealing ring pressurising, plays sealing, crown_interception, does not influence the control action of valve, and sealing ring Expansion sealing effect it is more preferable, the cut-off sealing effect of valve has been effectively ensured.

Further, cavity is equipped with inside the sealing ring, seal ring coil is with outward extension, connection cavity Pressurising extension, pressurising extension extend to outside valve body through the pressurising pipeline, pressurising extension be convenient for and sealing ring into Row pressurising operation, is integrally formed, and so that sealing ring is had preferable structural strength, prolongs the service life.

Further, the pressurising pipeline include the first pipeline being arranged in flashboard, be arranged in valve rod with the first pipe The second pipeline that road communicates, the pressurising extends the first pipeline of caliber, the second pipeline is extended to outside valve body and filled with what is be arranged Press equipment connection.

Further, the width in the gap is 0.5-0.5mm.

Further, the valve body includes upper valve body, lower valve body, convenient for the production and assembly of valve body.

The beneficial effects of the utility model are: using the above scheme, avoiding the abrasion between flashboard and body cavity wall surface, having Effect extends the service life of valve, and the sealing ring of expansion can make this special service valve have preferable cut-off sealing function, defeated in iron powder The control action of special service valve is given full play in sending.

Detailed description of the invention

Through the following detailed description taken in conjunction with the accompanying drawings, the utility model objects, features and advantages above-mentioned and other will It becomes apparent.

Fig. 1 is a kind of structural schematic diagram of embodiment of the utility model.

Fig. 2 is the side view of flashboard in the utility model.

Fig. 3 is the structural schematic diagram of sealing ring in the utility model.

Wherein: 1 is valve body, and 2 be flashboard, and 21 be groove, and 22 be the first pipeline, and 3 be valve rod, and 31 be the second pipeline, between 4 are Gap, 5 be sealing ring, and 51 be cavity, and 52 be pressurising extension.

Specific embodiment

The utility model is described further with reference to the accompanying drawing.

Embodiment 1: referring to Fig.1, soft seal iron powder special service valve, including valve body 1, the round flashboard 2 of 1 inner cavity of valve body, valve body 1 The valve rod 3 that upper control flashboard 2 is opened and closed, valve body 1 includes upper valve body, lower valve body, convenient for the production and assembly of valve body, referring to Fig. 2, Fig. 3, The side wall opposite with 1 inner cavity wall surface of valve body of flashboard 2 is equipped with groove 21, and between being equipped between 1 inner cavity wall surface of 2 side wall of flashboard and valve body Gap 4, be embedded in groove 21 can pressurising expansion plugging gap 4 sealing ring 5, sealing ring 5 is in the state of not pressurising, sealing ring It is not contacted between 5 outside wall surface and 1 inner wall of valve body, after sealing ring punching press expansion, sealing ring is tightly fitted on internal chamber wall, sealing 5 inside of circle is equipped with cavity 51, and the circle body of sealing ring 5 is with outward extension, is connected to the pressurising extension 52 of cavity, and pressurising extends Pipe 52 and sealing ring are integrally formed, and sealing ring 5 is made of high temperature resistant, wear-resisting deformable high molecular material, are set inside flashboard 2 Have the first pipeline 22, the opening of one end of the first pipeline 22 is in groove 21, the other end of the first pipeline 22 opening in The axle center of 3 joint of valve rod, valve rod 3 is equipped with the second pipeline 31, and pressurising extension 52 prolongs through the first pipeline 22, the second pipeline 31 The compressed air feedway being arranged outside valve body 1 is extended to, the setting in gap 4 makes flashboard 2 in opening and closing between body cavity wall It does not contact, effectively avoids abrasion, greatly extend the service life of valve, tool circumscribed with body cavity under 5 normality of sealing ring There is certain sealing function, 5 Wear body cavity wall surface of sealing ring, after blasting compressed air, sealing ring 5 expands, will It is effectively sealed, retains with body cavity Nell wall joint, play the control action of valve, valve has been effectively ensured End sealing effect, the width in gap 4 is 0.5mm, and distance is smaller, convenient for the control to flashboard, inner cavity cooperation, reduces fitness The probability of caused valve failure.

Embodiment 2: referring to Fig.1, soft seal iron powder special service valve, including valve body 1, the round flashboard 2 of 1 inner cavity of valve body, valve body 1 The valve rod 3 that upper control flashboard 2 is opened and closed, valve body 1 includes upper valve body, lower valve body, convenient for the production and assembly of valve body, referring to Fig. 2, Fig. 3, The side wall opposite with 1 inner cavity wall surface of valve body of flashboard 2 is equipped with groove 21, and between being equipped between 1 inner cavity wall surface of 2 side wall of flashboard and valve body Gap 4, be embedded in groove 21 can pressurising expansion plugging gap 4 sealing ring 5, sealing ring 5 is in the state of not pressurising, sealing ring 5 outside wall surface and 1 inner wall of valve body are just circumscribed, and cavity 51 is equipped with inside sealing ring 5, and the circle body of sealing ring 5 is equipped with to extension Pressurising extension 52 stretch, connection cavity, pressurising extension 52 and sealing ring are integrally formed, and sealing ring 5 is using high temperature resistant, resistance to It grinds deformable high molecular material to be made, the first pipeline 22 is equipped with inside flashboard 2, the opening of one end of the first pipeline 22 is in recessed In slot 21, the other end opening of the first pipeline 22 is equipped with the second pipeline 31, pressurising in the axle center with 3 joint of valve rod, valve rod 3 Extension 52 extends to the compressed air feedway being arranged outside valve body 1, gap 4 through the first pipeline 22, the second pipeline 31 Setting contact flashboard 2 not between body cavity wall in opening and closing, effectively avoid abrasion, greatly extend valve use It is service life, circumscribed with body cavity under 5 normality of sealing ring, there is certain sealing function, 5 Wear body cavity of sealing ring Wall surface, after blasting compressed air, sealing ring 5 expands, and will be effectively sealed, retain with body cavity Nell wall joint, The cut-off sealing effect of valve has been effectively ensured in the control action for playing valve, and the width in gap 4 is 5mm, is suitable for large size Valve stops enough spaces for the setting and expansion of sealing ring, improves sealing effect, the width in gap can according to the size of valve and Usage scenario is applicable in and sexually revises.

The above is only the preferred embodiment of the utility model, not does limit in any form to the utility model System, it is all according to any simple modification to the above embodiments in the technical essence of the utility model, equivalent variations, fall Enter within the protection scope of the utility model.

Claims (5)

1. soft seal iron powder special service valve, the valve rod including controlling flashboard opening and closing on valve body, the round flashboard of body cavity, valve body, It is characterized in that, the flashboard side wall opposite with body cavity wall surface is equipped with groove, flashboard side wall and body cavity wall surface Equipped with gap, be embedded in the groove can pressurising expansion plugging gap sealing ring, flashboard, stem internal be equipped with to sealing Circle carries out the pressurising pipeline of pressurising.

2. soft seal iron powder special service valve according to claim 1, which is characterized in that be equipped with sky inside the sealing ring Chamber, seal ring coil is with outward extension, is connected to the pressurising extension of cavity, and pressurising extension prolongs through the pressurising pipeline It extends to outside valve body.

3. soft seal iron powder special service valve according to claim 2, which is characterized in that the pressurising pipeline includes in flashboard The second pipeline communicated with the first pipeline being arranged in the first pipeline for being arranged, valve rod, the pressurising extend caliber first and manage Road, the second pipeline extend to outside valve body and connect with the pressurising equipment of setting.

4. soft seal iron powder special service valve according to claim 1, which is characterized in that the width in the gap is 0.5- 0.5mm。

5. soft seal iron powder special service valve according to claim 1, which is characterized in that the valve body include upper valve body, under Valve body.