CN212360826U

CN212360826U - Stop valve

Info

Publication number: CN212360826U
Application number: CN202021160226.5U
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: 2021-01-15
Anticipated expiration: 2030-06-20

Abstract

The utility model relates to a stop valve, which comprises a valve body, a valve rod and a hand wheel which are connected in sequence, wherein a valve clack is arranged between the valve body and the valve rod, the valve clack is fixedly connected with the valve rod, a valve seat matched with the valve clack is arranged in the valve body, the valve body is divided into a liquid inlet channel and a liquid outlet channel by the valve clack and the valve seat, a filter screen is arranged in the liquid inlet channel, the filter screen is positioned between the opening of the liquid inlet channel and the valve seat, a first sealing ring is arranged in the liquid inlet channel, the first sealing ring is positioned at the outer side of the filter screen, the liquid outlet channel is provided with a second sealing ring, a valve cover is arranged at the upper end of the valve body, a third sealing ring is arranged at the inner side of the upper end of the valve body, the third sealing ring is clamped with the, the stop valve has the advantages of high sealing, simple structure, filtering function and corrosion resistance.

Description

Stop valve

Technical Field

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

Background

The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur. The connection mode is divided into three types: flange connection, screw thread connection and welding connection. After the self-sealing valve appears, the medium flow direction of the stop valve is changed to enter the valve cavity from the upper part of the valve clack, at this time, under the action of medium pressure, the force for closing the valve is small, the force for opening the valve is large, and the diameter of the valve rod can be correspondingly reduced.

In the prior art, the sealing performance of the stop valve is insufficient, so that the liquid leakage condition is easily caused in work, and the work efficiency can be reduced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a stop valve that is sealed high, simple structure, has filtering action, corrosion-resistant.

The technical scheme of the utility model is realized like this: a stop valve comprises a valve body, a valve rod and a hand wheel which are connected in sequence, a valve clack is arranged between the valve body and the valve rod, the valve clack is fixedly connected with the valve rod, a valve seat matched with the valve clack is arranged in the valve body, the valve body is divided into a liquid inlet channel and a liquid outlet channel by the valve clack and the valve seat, a filter screen is arranged in the liquid inlet channel, the filter screen is positioned between the opening of the liquid inlet channel and the valve seat, a first sealing ring is arranged in the liquid inlet channel, the first sealing ring is positioned at the outer side of the filter screen, the liquid outlet channel is provided with a second sealing ring, the upper end of the valve body is provided with a valve cover, the inner side of the upper end of the valve body is provided with a third sealing ring, the third sealing ring is clamped with the valve body, the valve cap bottom joint is in the valve body, the bottom of valve cap is equipped with and is used for with third sealing washer complex sealed piece, be equipped with the polytetrafluoroethylene layer in the valve body.

By adopting the technical scheme, be equipped with the valve clack between valve body and the valve rod, valve clack and valve rod fixed connection, be equipped with in the valve body with valve clack complex disk seat, valve clack and disk seat cooperation are used for controlling the flow of fluid in the valve body, valve clack and disk seat will the valve body separate for inlet channel and liquid outlet channel, inlet channel is located the left side, liquid outlet channel is located the right side, the lower extreme department that the valve clack contradicts the disk seat is liquid inlet channel, the upside that valve clack and disk seat cooperation are liquid outlet channel, be equipped with the filter screen in the inlet channel, the outside of filter screen is equipped with fixed connector, fixed connector joint is in the inner wall of valve body, fixed connector can adopt the rubber material, consequently be convenient for pack into the filter screen, also can adopt the metal material to put into through, the connection strength is improved, the filter screen can play a role of filtering, impurities are blocked, the cleanliness of liquid is improved, the filter screen is positioned between the opening of the liquid inlet channel and the valve seat, the filter screen is positioned in the middle of the filter screen, so that the use of the valve clack is not hindered, meanwhile, the connection between the outer side of the liquid inlet channel and a pipeline is not hindered, the installation is convenient, a first sealing ring is arranged in the liquid inlet channel, the first sealing ring is clamped in the inner wall of the valve body, the sealing performance of the connection with the pipeline is improved, the first sealing ring is positioned on the outer side of the filter screen, the use of the first sealing ring is convenient, the liquid outlet channel is provided with a second sealing ring, the second sealing ring and the first sealing ring are symmetrically arranged, the sealing performance of the connection between the liquid outlet channel and the pipeline is further improved, and the upper end of, the bottom of valve gap is equipped with the arch, arch and valve body cooperation, the upper end inboard of valve body is equipped with the third sealing washer, setting up of first sealing washer has further improved the gas tightness of valve body, third sealing washer and valve body joint are convenient for install and improve the firmness of connecting, valve cap bottom joint is in the valve body, the bottom of valve gap is equipped with and is used for with third sealing washer complex sealed piece, sealed piece and protruding fixed connection, the bottom outside of sealed piece can contradict with the third sealing washer, consequently improved valve body and valve gap connection's gas tightness, be equipped with the polytetrafluoroethylene layer in the valve body, adopt the polytetrafluoroethylene layer can improve the corrosion resistance of valve body, because polytetrafluoroethylene is superstrong corrosion-resistant material, can scribble the polytetrafluoroethylene material at inlet channel, liquid outlet channel simultaneously, The valve clack and the outer side of the valve body are convenient for prolonging the service life of the whole valve body.

The utility model discloses further set up to: the outside fixedly connected with snap ring of third sealing washer, the snap ring card is established in the valve body inner wall.

Through adopting above-mentioned technical scheme, the snap ring with third sealing washer integrated into one piece has improved intensity and life greatly, can prevent the damage of third sealing washer is convenient for install and dismantle third sealing washer and valve body fixed connection through the snap ring, has improved the firmness of connecting simultaneously, the third sealing washer is located the cooperation department of valve body and valve gap.

The utility model discloses further set up to: the surface of the hand wheel is provided with a rough section.

Through adopting above-mentioned technical scheme, the setting of coarse section is convenient for artificial intervention, has improved the efficiency of using, can play the effect that prevents to skid simultaneously.

The utility model discloses further set up to: the valve is characterized in that a locking mechanism matched with the valve rod is arranged on one side of the upper end of the valve body, the locking mechanism comprises a clamping hook hinged with the valve body, a clamping piece is arranged on one side of the valve rod, and the clamping hook deviates from the hinged end and is fixedly connected with the clamping piece.

Through adopting above-mentioned technical scheme, locking mechanism's setting can be in when the valve body does not use, conflict the cooperation back when valve clack and disk seat, with valve body and valve rod closure, prevent the lift of valve rod, improved the efficiency of closure, the trip is the arc, convenient to use.

The utility model discloses further set up to: the upper end of the clamping piece is provided with a clamping groove for placing the clamping hook.

By adopting the technical scheme, the clamping groove on the clamping hook and the clamping piece can play a locking effect after being abutted.

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 valve seat; 102. a liquid inlet channel; 103. a liquid outlet channel; 104. filtering with a screen; 105. fixing the connecting piece; 106. a first seal ring; 107. a second seal ring; 108. a third seal ring; 109. a snap ring; 2. a valve stem; 201. a valve flap; 3. a hand wheel; 301. a rough section; 4. a locking mechanism; 401. a hook is clamped; 402. a fastener; 5. a valve cover; 501. and (6) sealing the block.

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 stop valve, which comprises a valve body 1, a valve rod 2 and a hand wheel 3 which are connected in sequence, wherein a valve clack 201 is arranged between the valve body 1 and the valve rod 2, the valve clack 201 is fixedly connected with the valve rod 2, a valve seat 101 matched with the valve clack 201 is arranged in the valve body 1, the valve clack 201 is matched with the valve seat 101 to control the flow of fluid in the valve body 1, the valve clack 201 and the valve seat 101 separate the valve body 1 into a liquid inlet channel 102 and a liquid outlet channel 103, the liquid inlet channel 102 is arranged at the left side, the liquid outlet channel 103 is arranged at the right side, the lower end of the valve clack 201 abutting against the valve seat 101 is the liquid inlet channel 102, the upper side of the valve clack 201 matched with the valve seat 101 is the liquid outlet channel 103, a filter screen 104 is arranged in the liquid inlet channel 102, the fixed connecting piece 105 can be made of rubber, so that the filter screen 104 can be conveniently installed, or can be made of metal and fixed by welding after being placed in the liquid inlet channel 102, so that the connection strength is improved, the filter screen 104 can play a role of filtering, blocking impurities and improving the cleanliness of liquid, the filter screen 104 is positioned between the opening of the liquid inlet channel 102 and the valve seat 101, the filter screen 104 is positioned in the middle of the filter screen, so that the valve flap 201 cannot be obstructed, the connection between the outer side of the liquid inlet channel 102 and a pipeline is not obstructed, and the installation is convenient, a first sealing ring 106 is arranged in the liquid inlet channel 102, the first sealing ring 106 is clamped in the inner wall of the valve body 1, so that the sealing performance of the connection with the pipeline is improved, the first sealing ring 106 is positioned on the outer side of the filter screen 104, so that the first sealing ring 106 can be conveniently used, the, the second sealing ring 107 and the first sealing ring 106 are symmetrically arranged, the arrangement of the second sealing ring 107 can further improve the sealing performance between the liquid outlet channel 103 and a pipeline connection, the upper end of the valve body 1 is provided with the valve cover 5, the bottom of the valve cover 5 is provided with a bulge which is matched with the valve body 1, the inner side of the upper end of the valve body 1 is provided with the third sealing ring 108, the arrangement of the first sealing ring 106 further improves the air tightness of the valve body 1, the third sealing ring 108 is clamped with the valve body 1, the installation is convenient and the connection firmness is improved, the bottom of the valve cover 5 is clamped in the valve body 1, the bottom of the valve cover 5 is provided with the sealing block 501 matched with the third sealing ring 108, the sealing block 501 is fixedly connected with the bulge, the outer side of the bottom of the sealing block 501 can be abutted against the third sealing ring 108, so that the air tightness of the connection between the valve body 1 and the valve cover, be equipped with the polytetrafluoroethylene layer in the valve body 1, adopt the polytetrafluoroethylene layer can improve the corrosion resistance of valve body 1, because polytetrafluoroethylene is superstrong corrosion-resistant material, can scribble the polytetrafluoroethylene material in the outside of inlet channel 102, liquid outlet channel 103, valve clack 201 and valve body 1 simultaneously, be convenient for improve the holistic life of valve body 1.

The outside fixedly connected with snap ring 109 of third sealing washer 108, snap ring 109 card is established in 1 inner wall of valve body, snap ring 109 with third sealing washer 108 integrated into one piece has improved intensity and life greatly, can prevent the damage of third sealing washer 108 is convenient for install and dismantle with

third sealing washer

108 and 1 fixed connection of valve body through snap ring 109, has improved the firmness of connection simultaneously, third sealing washer 108 is located the cooperation department of valve body 1 and valve gap.

The surface of hand wheel 3 is equipped with coarse section 301, the setting of coarse section 301 is convenient for artificial intervention, has improved the efficiency of use, can play the effect of preventing skidding simultaneously.

The upper end one side of valve body 1 is equipped with valve rod 2 complex locking mechanical system 4, locking mechanical system 4 include with valve body 1 articulated trip 401, one side of valve rod 2 is equipped with fastener 402, trip 401 deviates from articulated one end and fastener 402 fixed connection, locking mechanical system 4's setting can when valve body 1 does not use, conflict the cooperation back when valve clack 201 and disk seat 101, with valve body 1 and valve rod 2 closure, prevent the lift of valve rod 2, improved the efficiency of closure, trip 401 is the arc, convenient to use.

The upper end of the clamping piece 402 is provided with a clamping groove for placing the clamping hook 401, and the clamping hook 401 and the clamping groove on the clamping piece 402 can play a locking effect after being abutted.

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 stop valve, includes valve body, valve rod and the hand wheel that connects gradually, its characterized in that: be equipped with the valve clack between valve body and the valve rod, valve clack and valve rod fixed connection, be equipped with in the valve body with valve clack complex disk seat, valve clack and disk seat will the valve body separates for inlet channel and liquid outlet channel, be equipped with the filter screen in the inlet channel, the filter screen is located between inlet channel opening and the disk seat, be equipped with first sealing washer in the inlet channel, first sealing washer is located the outside of filter screen, liquid outlet channel is equipped with the second sealing washer, the upper end of valve body is equipped with the valve gap, the upper end inboard of valve body is equipped with the third sealing washer, third sealing washer and valve body joint, valve gap bottom joint is in the valve body, the bottom of valve gap is equipped with and is used for with third sealing washer complex seal block, be equipped with the polytetrafluoroethylene layer.

2. A shut-off valve as claimed in claim 1, wherein: the outside fixedly connected with snap ring of third sealing washer, the snap ring card is established in the valve body inner wall.

3. A shut-off valve as claimed in claim 1, wherein: the surface of the hand wheel is provided with a rough section.

4. A shut-off valve as claimed in claim 1, wherein: the valve is characterized in that a locking mechanism matched with the valve rod is arranged on one side of the upper end of the valve body, the locking mechanism comprises a clamping hook hinged with the valve body, a clamping piece is arranged on one side of the valve rod, and the clamping hook deviates from the hinged end and is fixedly connected with the clamping piece.

5. A shut-off valve as claimed in claim 4, wherein: the upper end of the clamping piece is provided with a clamping groove for placing the clamping hook.