CN212536721U

CN212536721U - Gate valve

Info

Publication number: CN212536721U
Application number: CN202021161866.8U
Authority: CN
Inventors: 杨斌; 朱杨峰
Original assignee: Wenzhou Weinaite Valve Co ltd
Current assignee: Wenzhou Weinaite Valve Co ltd
Priority date: 2020-06-20
Filing date: 2020-06-20
Publication date: 2021-02-12
Anticipated expiration: 2030-06-20

Abstract

The utility model relates to a gate valve, which comprises a valve body, wherein a flashboard is arranged in the valve body, the upper end of the flashboard is fixedly connected with a valve rod, a valve cover is arranged at the upper end of the valve body, an annular first clamping groove is arranged at the upper end of the valve body, a first sealing ring and a second sealing ring are arranged in the first clamping groove, the second sealing ring is positioned at the inner side of the first sealing ring, a groove is arranged at the bottom of the valve cover, a second clamping groove is arranged at the lower part of the groove wall of the groove, a sealing sleeve is arranged in the second clamping groove, the sealing sleeve comprises a first sealing body and a second sealing body, the first sealing body and the second clamping groove are fixedly connected, the second sealing body is tightly attached to the inner wall of the groove and extends towards the valve body, connecting parts are respectively arranged at the two sides of the valve body, to provide a gate valve having high sealing performance and a simple structure.

Description

Gate valve

Technical Field

The utility model relates to the technical field of valves, in particular to gate valve.

Background

The gate valve is a shutter, the movement direction of the shutter is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. Gate valves are sealed by the contact of the valve seat and gate plate, and the sealing surface is usually welded with metal materials to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The gate plate is divided into a rigid gate plate and an elastic gate plate according to different gate plates.

In the prior art, when the gate valve is completely opened, liquid can impact the valve cover and simultaneously flow to the liquid outlet channel, but the upper end of the gate plate still has liquid to remain after the gate plate is closed, so that the connection airtightness of the valve body and the valve cover is insufficient at present, liquid leakage is caused, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a gate valve that leakproofness is high, simple structure.

The technical scheme of the utility model is realized like this: the utility model provides a gate valve, includes the valve body, be equipped with the flashboard in the valve body, the upper end and the valve rod fixed connection of flashboard, the upper end of valve body is equipped with the valve gap, the upper end of valve body is equipped with annular first draw-in groove, be equipped with first sealing ring and second sealing ring in the first draw-in groove, the second sealing ring is located the inboard of first sealing ring, the bottom of valve gap is equipped with the recess, the cell wall of recess is located to the lower side and is equipped with the second draw-in groove, be equipped with the seal cover in the second draw-in groove, the seal cover includes first seal and second seal, first seal and second draw-in groove fixed connection, the second seal with the inner wall of recess closely laminates, and extends to valve body department, the both sides of valve body are equipped with connecting portion respectively, the outside of connecting portion.

By adopting the technical scheme, the upper end of the valve body is provided with the annular first clamping groove, the first clamping groove is positioned at the edge of the opening part at the upper end of the valve body, the opening part of the valve body is used for being connected with the valve cover, the first clamping groove is internally provided with the first sealing ring and the second sealing ring, the first sealing ring and the second sealing ring are overlapped and sleeved, the air tightness of the connection between the valve body and the valve cover can be greatly improved, the second sealing ring is positioned at the inner side of the first sealing ring, the bottom of the valve cover is provided with the groove, the unnecessary waste during the production of the valve cover can be reduced by the arrangement of the groove, the weight of the valve cover is reduced at the same time, the second clamping groove is arranged at the lower part of the groove wall, the second clamping groove is annular, the sealing sleeve is arranged in the second clamping, because the flashboard is opened and liquid is impacted upwards, after the flashboard is closed, the liquid has a certain amount of accumulation to be left in the flashboard, the sealing of the valve body and the valve cover is very important, the sealing sleeve comprises a first sealing body and a second sealing body, the first sealing body is fixedly connected with a second clamping groove, the sealing sleeve can be prevented from losing efficacy, the second sealing body is tightly attached to the inner wall of the groove and the inner wall of the valve body, the second sealing body extends towards the first clamping groove and can cover the first sealing ring and the second sealing ring, the matching air tightness of the valve body and the valve cover is greatly improved, the sealing sleeve can completely seal the joint of the valve body and the valve cover, the sealing efficiency can be greatly improved due to the arrangement of the first sealing ring and the second sealing ring, the two sides of the valve body are respectively provided with connecting parts, and the connecting parts and the two sides of the valve body are integrally formed to, be convenient for and pipe connection, the outside of connecting portion is equipped with the external screw thread that is used for being connected with the pipeline cooperation, connecting portion and pipeline can pass through threaded connection, with improved with the firmness of pipe connection and leakproofness, be convenient for carry out the fixed in later stage.

The utility model discloses further set up to: the section of the sealing sleeve is in an inverted L shape.

Through adopting above-mentioned technical scheme, consequently, the seal cover can with the inseparable cooperation of junction of valve body and valve gap improves the gas tightness.

The utility model discloses further set up to: the first sealing body is fixedly connected with the second clamping groove through a bolt.

Through adopting above-mentioned technical scheme, improved first seal with the joint strength of second draw-in groove is convenient for install and dismantle simultaneously.

The utility model discloses further set up to: the outside cover of connecting portion is equipped with the rubber sleeve, the outside of rubber sleeve is equipped with and is used for and pipeline matched with screw thread, the inboard and the connecting portion fixed connection of rubber sleeve.

Through adopting above-mentioned technical scheme, the rubber sleeve has good coefficient of friction, can improve connecting portion and pipe connection's intensity, has leak protection water's effect simultaneously, has improved the gas tightness, the outside fixed connection of rubber sleeve and connecting portion can prevent that the rubber sleeve from droing.

The utility model discloses further set up to: be equipped with in the valve body with flashboard complex disk seat, the third sealing ring that is equipped with in the disk seat.

Through adopting above-mentioned technical scheme, the upper end of flashboard with when how big hubcap is contradicted, the valve body runner is closed, the third sealing ring of joint in the disk seat is convenient for improve the leakproofness after flashboard and disk seat are contradicted, prevents that liquid from flowing to the opposite side from one side of flashboard.

The utility model discloses further set up to: the valve body is internally provided with a sealing groove for inserting the flashboard, the bottom of the sealing groove is matched with the bottom of the flashboard, and a sealing piece is fixedly connected in the sealing groove.

Through adopting above-mentioned technical scheme, sealing member in the seal groove is convenient for the flashboard forms good sealed with the flashboard after inserting, consequently all is equipped with seal structure at the upper and lower both ends of flashboard after the flashboard is closed and seals, has improved the leakproofness greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1 according to an embodiment of the present invention.

Reference numerals: 1. a valve body; 101. a shutter plate; 102. a first card slot; 103. a first seal ring; 104. a second seal ring; 105. a connecting portion; 106. a rubber sleeve; 107. a valve seat; 1071. a third seal ring; 108. a sealing groove; 109. a seal member; 2. a valve cover; 201. a groove; 202. a second card slot; 203. sealing sleeves; 2031. A first sealing body; 2032. a second seal body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 2, the utility model discloses a gate valve, which comprises a valve body 1, a gate plate 101 is arranged in the valve body 1, the upper end of the gate plate 101 is fixedly connected with a valve rod, a valve cover 2 is arranged at the upper end of the valve body 1, an annular first clamping groove 102 is arranged at the upper end of the valve body 1, the first clamping groove 102 is arranged at the edge of the opening part at the upper end of the valve body 1, the opening part of the valve body 1 is used for being connected with the valve cover 2, a first sealing ring 103 and a second sealing ring 104 are arranged in the first clamping groove 102, the first sealing ring 103 and the second sealing ring 104 are overlapped and sleeved, which can greatly improve the air tightness of the connection between the valve body 1 and the valve cover 2, the second sealing ring 104 is arranged at the inner side of the first sealing ring 103, a groove 201 is arranged at the bottom of the valve cover, meanwhile, the weight of the valve cap 2 is reduced, a second clamping groove 202 is arranged at the lower part of the groove wall of the groove 201, the second clamping groove 202 is annular, a sealing sleeve 203 is arranged in the second clamping groove 202, the arrangement of the sealing sleeve 203 is convenient for improving the matching air tightness of the valve body 1 and the valve cap 2, liquid impacts upwards due to the opening of the flashboard 101, and after the flashboard 101 is closed, the liquid has a certain retention inside, so that the valve body 1 and the valve cap 2 are very important to seal, the sealing sleeve 203 comprises a first sealing body 2031 and a second sealing body 2032, the first sealing body 2031 and the second clamping groove 202 are fixedly connected, so that the sealing sleeve 203 can be prevented from failing, the second sealing body 2032 is tightly attached to the inner wall of the groove 201 and the inner wall of the valve body 1, the second sealing body 2032 extends towards the first clamping groove 102, and can shield both the first sealing ring 103 and the second sealing ring 104, therefore, the matching air tightness of the valve body 1 and the valve cover 2 is greatly improved, the sealing sleeve 203 is arranged to completely seal the joint of the valve body 1 and the valve cover 2, the sealing efficiency is greatly improved due to the arrangement of the first sealing ring 103 and the second sealing ring 104, the two sides of the valve body 1 are respectively provided with the connecting part 105, the connecting part 105 and the two sides of the valve body 1 are integrally formed to improve the strength and facilitate connection with a pipeline, the outer side of the connecting part 105 is provided with an external thread used for being connected with the pipeline in a matching way, the connecting part 105 and the pipeline can be connected through threads, the firmness and the sealing performance of connection with the pipeline are improved, and later-stage fixation is facilitated.

The section of the sealing sleeve 203 is in an inverted L shape, so that the sealing sleeve 203 can be tightly matched with the joint of the valve body 1 and the valve cover 2, and the air tightness is improved.

The first sealing body 2031 is fixedly connected with the second clamping groove 202 through bolts, so that the connection strength of the first sealing body 2031 and the second clamping groove 202 is improved, and meanwhile, the installation and the disassembly are convenient.

The outside cover of connecting portion 105 is equipped with rubber sleeve 106, the outside of rubber sleeve 106 is equipped with and is used for the screw thread with pipeline matched with, the inboard and the connecting portion 105 fixed connection of rubber sleeve 106, rubber sleeve 106 have good coefficient of friction, can improve connecting portion 105 and pipe connection's intensity, have the effect of leak protection water simultaneously, have improved the gas tightness, the outside fixed connection of rubber sleeve 106 and connecting portion 105 can prevent that rubber sleeve 106 from droing.

Be equipped with in the valve body 1 with flashboard 101 complex disk seat 107, be equipped with the third sealing ring 1071 that is used for improving flashboard 101 and disk seat 107 leakproofness in the disk seat 107, the upper end of flashboard 101 with when big hubcap 107 conflicts, the 1 runner of valve body is closed, the third sealing ring 1071 of joint in the disk seat 107 is convenient for improve the leakproofness after flashboard 101 and disk seat 107 conflict, prevents that liquid from flowing to the opposite side from one side of flashboard 101.

Be equipped with in the valve body 1 and supply flashboard 101 male seal groove 108, the bottom cooperation of seal groove 108 and flashboard 101, fixedly connected with sealing member 109 in the seal groove 108, sealing member 109 in the seal groove 108 is convenient for flashboard 101 forms good sealed with flashboard 101 after inserting, consequently all is equipped with seal structure at the upper and lower both ends of flashboard 101 after the flashboard 101 is closed and seals, has improved the leakproofness greatly.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a gate valve, includes the valve body, be equipped with the flashboard in the valve body, the upper end and the valve rod fixed connection of flashboard, the upper end of valve body is equipped with valve gap, its characterized in that: the upper end of valve body is equipped with annular first draw-in groove, be equipped with first sealing ring and second sealing ring in the first draw-in groove, the second sealing ring is located the inboard of first sealing ring, the bottom of valve gap is equipped with the recess, the cell wall of recess is equipped with the second draw-in groove under one's place, be equipped with the seal cover in the second draw-in groove, the seal cover includes first seal and second seal, first seal and second draw-in groove fixed connection, the second seal with the inner wall of recess closely laminates, and locates to extend to the valve body, the both sides of valve body are equipped with connecting portion respectively, the outside of connecting portion is equipped with the external screw thread that is used for being connected with the pipe-line fit.

2. A gate valve according to claim 1, characterised in that: the section of the sealing sleeve is in an inverted L shape.

3. A gate valve according to claim 1, characterised in that: the first sealing body is fixedly connected with the second clamping groove through a bolt.

4. A gate valve according to claim 1, characterised in that: the outside cover of connecting portion is equipped with the rubber sleeve, the outside of rubber sleeve is equipped with and is used for and pipeline matched with screw thread, the inboard and the connecting portion fixed connection of rubber sleeve.

5. A gate valve according to claim 1, characterised in that: the valve body is internally provided with a valve seat matched with the flashboard, and the valve seat is internally provided with a third sealing ring.

6. A gate valve according to claim 1, characterised in that: the valve body is internally provided with a sealing groove for inserting the flashboard, the bottom of the sealing groove is matched with the bottom of the flashboard, and a sealing piece is fixedly connected in the sealing groove.