CN112483672A - High-performance gate valve - Google Patents

High-performance gate valve Download PDF

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Publication number
CN112483672A
CN112483672A CN202011278640.0A CN202011278640A CN112483672A CN 112483672 A CN112483672 A CN 112483672A CN 202011278640 A CN202011278640 A CN 202011278640A CN 112483672 A CN112483672 A CN 112483672A
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CN
China
Prior art keywords
sealing
valve
flashboard
rod
gate
Prior art date
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Granted
Application number
CN202011278640.0A
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Chinese (zh)
Other versions
CN112483672B (en
Inventor
周云忠
柴为民
柴璐
路远航
王丽萍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Chunjiang Valve Co ltd
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Hangzhou Chunjiang Valve Co ltd
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Publication date
Application filed by Hangzhou Chunjiang Valve Co ltd filed Critical Hangzhou Chunjiang Valve Co ltd
Priority to CN202011278640.0A priority Critical patent/CN112483672B/en
Publication of CN112483672A publication Critical patent/CN112483672A/en
Application granted granted Critical
Publication of CN112483672B publication Critical patent/CN112483672B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/12—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces
    • F16K3/14—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces with special arrangements for separating the sealing faces or for pressing them together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • F16K27/047—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with wedge-shaped obturating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
    • F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)

Abstract

The invention discloses a high-performance gate valve, and aims to solve the defects of poor sealing performance and low opening and closing speed of the conventional gate valve. The valve comprises a valve body, a flashboard, a valve cover and a support, wherein the flashboard is installed in the valve body in an adaptive manner, the valve cover is connected between the valve body and the support, the flashboard is connected with a valve rod, a left sealing surface and a right sealing surface are arranged in the valve body and correspond to the flashboard, the outer surface of the flashboard is coated with a sealing layer, sealing bulges are arranged on two sides of the flashboard, and the two sealing bulges are respectively attached and sealed with the left sealing; the support is provided with a support nut, the flashboard is provided with a flashboard nut, the screwing direction of the screw thread of the support nut is opposite to that of the screw thread of the flashboard nut, and the support nut and the flashboard nut are both in threaded connection with the valve rod. The high-performance gate valve has good sealing performance and high opening and closing speed.

Description

High-performance gate valve
Technical Field
The invention relates to a valve technology, in particular to a high-performance gate valve.
Background
The opening and closing part of the gate valve is a gate plate, the moving direction of the gate plate 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 the gate plate, and the sealing surface is usually bead-welded with a metallic material to increase wear resistance. The gate plate is divided into a rigid gate plate and an elastic gate plate according to the difference of the gate plate. Although the types of the existing gate valves are various, the sealing performance of many gate valves on the market at present is poor, and the opening and closing speed is slow.
Disclosure of Invention
The invention overcomes the defects of poor sealing performance and low opening and closing speed of the existing gate valve, and provides a high-performance gate valve which is good in sealing performance and high in opening and closing speed.
In order to solve the technical problems, the invention adopts the following technical scheme: a high-performance gate valve comprises a valve body, a gate plate, a valve cover and a support, wherein the gate plate is installed in the valve body in an adaptive mode, the valve cover is connected between the valve body and the support, the gate plate is connected with a valve rod, a left sealing surface and a right sealing surface are arranged in the valve body and correspond to the gate plate, a sealing layer is coated on the outer surface of the gate plate, sealing bulges are arranged on two sides of the gate plate, and the two sealing bulges are respectively attached to and sealed with the left; the support is provided with a support nut, the flashboard is provided with a flashboard nut, the screwing direction of the screw thread of the support nut is opposite to that of the screw thread of the flashboard nut, and the support nut and the flashboard nut are both in threaded connection with the valve rod.
After the flashboard was closed, the sealed arch of flashboard both sides was sealed with the left side on the valve body inner wall sealed face, the laminating of right side sealed face respectively, and flashboard surface cladding has the sealing layer moreover, and the sealing layer can take place to warp, and is sealed effectual. Realize the flashboard through rotating the valve rod and open and close the action, and with valve rod threaded connection's support nut, the screw thread of flashboard nut revolve to opposite, and support nut installs on the support, and the flashboard nut is installed on the flashboard, therefore the displacement of the in-process flashboard of rotating the valve rod is the twice of valve rod displacement, has improved the speed of opening and close of flashboard greatly. The high-performance gate valve has good sealing performance and high opening and closing speed.
Preferably, the cross section of the sealing bulge is triangular, and the end part of the sealing bulge is in smooth transition. In the closing process of the flashboard, firstly, the smooth transition position of the end part of the sealing bulge is contacted with the left sealing surface and the right sealing surface of the valve body, and because the contact area of the position is small, the valve body can deform under a smaller closing force and form reliable sealing, the torque required by rotating the valve rod is small, and the operation is light and flexible.
Preferably, a conical sealing gasket is arranged on the flashboard, a conical groove is formed in the top surface of the inner wall of the valve cover, the sealing gasket is arranged in the conical groove in a sealing mode, and the valve rod penetrates through the sealing gasket and the conical groove.
When the flashboard is fully opened, the conical sealing gasket on the flashboard is contacted with the conical groove on the inner wall of the valve cover and generates extrusion deformation, so that the sealing gasket tightly holds the valve rod, and a good sealing effect is formed among the sealing gasket, the valve cover and the valve rod. That is to say, the full open shutter plate has the effect of falling the seal.
Preferably, a through hole is formed in the middle of the flashboard, an inverted U-shaped connecting seat is arranged on the upper portion of the flashboard, a flashboard nut is installed between the connecting seat and the upper portion of the flashboard, a jack is arranged on the connecting seat, and the lower portion of the valve rod penetrates through the jack and the flashboard nut and is placed in the through hole. The flashboard nut is installed between the connecting seat and the flashboard, and the installation is convenient and reliable. The through hole provides a good accommodating space for the screw rod.
Preferably, the sealing protrusion is of a C-shaped structure with a downward opening, a lower protruding rib which is triangular protrusion is arranged on the lower end face of the gate plate, and two ends of the lower protruding rib are arranged close to two ends of the sealing protrusion. The structure is good in sealing effect after being attached to the inner wall of the valve body.
Preferably, the distance between the left sealing surface and the right sealing surface is gradually reduced from top to bottom, and the distance between the two sealing bulges is gradually reduced from top to bottom. The structure is a wedge-shaped sealing structure formed between the flashboard and the valve body, and the sealing is reliable.
Preferably, sealing rings are arranged between the valve cover and the valve body and between the support and the valve cover, and a plurality of O-shaped rings are arranged between the lower part of the support and the valve rod. And the sealing effect is improved by installing the sealing ring and the O-shaped ring.
Preferably, the upper end of the valve rod extends out of the support, and the upper end of the valve rod is connected with the hand wheel. The valve rod is driven to rotate by the hand wheel, and the operation is convenient and reliable.
Preferably, a through hole is formed in the middle of the gate plate, the lower end of the valve rod is arranged in the through hole, a sealing boss is correspondingly arranged on the inner wall of the valve body and corresponds to the through hole, a circle of sealing groove is formed in the edge of the sealing boss on the inner wall of the valve body, a chamfer is arranged at the opening position of the lower end of the through hole, the surface of the sealing boss is of an outer convex arc structure, a circle of sealing convex ring is arranged at the edge of the through hole on the lower end of the gate plate, the cross section of the sealing convex ring is of a.
The chamfer is tightly attached to the surface of the sealing boss, and the sealing convex ring is tightly attached to the sealing groove, so that the sealing performance between the lower part of the flashboard and the inner wall of the valve body is greatly improved.
Preferably, a positioning column is arranged on the sealing boss, a rotating sleeve is rotatably arranged at the lower part of the positioning column, a liftable sliding sleeve is sleeved at the upper part of the positioning column, a return spring is arranged between the sliding sleeve and the positioning column, a plurality of blades are uniformly arranged on the rotating sleeve, a rotating wheel is arranged on the rotating sleeve, a section of arc-shaped meshing tooth is arranged on the outer wall of the rotating wheel, the rotating wheel is connected with a shifting rod, the end part of the shifting rod is arranged in a sealing groove, a lifting rod is arranged on the rotating sleeve, a rack is arranged on the lifting rod, the rack is meshed with the meshing tooth for transmission, a connecting rod extending downwards is connected on the sliding sleeve, a pushing block is arranged at the end part of the connecting rod, a pushing surface arranged in an inclined mode is arranged on the pushing block, a sliding block is arranged at the upper part of the rotating sleeve, a butting head is correspondingly arranged at one; the valve rod moves downwards to push the sliding sleeve to move downwards so that the pushing surface is abutted to the abutting head and pushes the sliding block to move, so that the guide surface pushes the lifting rod to move downwards, the rack on the lifting rod drives the rotating wheel to rotate, the deflector rod rotates upwards to enable the end part to be close to the rotating sleeve, the sliding sleeve continues to move the connecting rod downwards to be abutted to the abutting head, and the lifting rod stops moving; and the valve rod and the sliding sleeve stop moving until the sealing convex ring abuts against the sealing groove.
In the long-time working process of the gate valve, impurities are easily remained in the sealing groove, so that the sealing performance is influenced. When the flashboard was opened in this scheme, the driving lever tip was arranged in sealed recess, and the medium in the valve body drove the blade and rotates to realize changeing the rotation of cover, the impurity in the sealed recess was stirred along with changeing the cover in-process together to the driving lever, made impurity along with the sealed recess of medium outflow, prevented to remain impurity in sealed recess, guaranteed sealing performance. In the closing process of the flashboard, firstly, the valve rod moves downwards to push the sliding sleeve to move downwards so that the pushing surface is abutted to the abutting head and pushes the sliding block to move, so that the guide surface pushes the lifting rod to move downwards, the rack on the lifting rod drives the rotating wheel to rotate, the deflector rod rotates upwards so that the end part is close to the rotating sleeve, the deflector rod is arranged in the area where the through hole on the flashboard is located, the sliding sleeve continues to move the connecting rod downwards to abut against the abutting head, and at the moment, the lifting rod stops moving; and the valve rod and the sliding sleeve stop moving until the sealing convex ring abuts against the sealing groove. In the closing process of the flashboard, the driving lever is firstly rotated upwards to the area where the through hole is located, and the interference of the driving lever on the flashboard is avoided.
Compared with the prior art, the invention has the beneficial effects that: the gate valve is good in sealing effect when fully closed, has a reverse sealing effect when fully opened, and is high in opening and closing speed of the valve rod.
Drawings
Fig. 1 is a schematic structural view of a shutter closed state of embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a shutter fully opened state according to embodiment 1 of the present invention;
FIG. 3 is a schematic illustration of the construction of the shutter of the present invention;
fig. 4 is a schematic structural view of a shutter closed state of embodiment 2 of the present invention;
FIG. 5 is a schematic structural view of a shutter plate in a fully open state according to embodiment 2 of the present invention;
FIG. 6 is an enlarged partial schematic view of FIG. 4 of the present invention;
in the figure: 1. the valve comprises a valve body, a valve plate, a valve cover, a valve body, a support, a valve rod, a valve cover, a valve 4, a support, a valve rod, a left sealing surface, a right sealing surface, a sealing layer, a sealing bulge, a sealing ring, a support nut, a valve plate nut, a sealing gasket, a conical groove, a guide rib, a connecting seat, 16, a plug hole, 17, a lower convex rib, 18, a sealing ring, a 19, an O-shaped ring, 20, a hand wheel, 21, an extending part, 22, a sealing boss, 23, a sealing groove, 24, a chamfer, 25, a sealing convex ring, 26, a positioning column, 27, a rotating sleeve, 28, a sliding sleeve, 29, a return spring, 30, a blade, 31, a rotating wheel, 32, a meshing tooth, 33, a driving rod, 34, a lifting rod, 35, a rack, 36, a connecting rod, 37, a pushing block, 38, a pushing surface, 39.
Detailed Description
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1: a high-performance gate valve (see attached figures 1, 2 and 3) comprises a valve body 1, a gate plate 2, a valve cover 3 and a support 4, wherein the gate plate is installed in the valve body in an adaptive mode, the valve cover is connected between the valve body and the support, a valve rod 5 is connected onto the gate plate, a left sealing surface 6 and a right sealing surface 7 are arranged in the valve body and correspond to the gate plate, a sealing layer 8 is coated on the outer surface of the gate plate, sealing bulges 9 are arranged on two sides of the gate plate, and the two sealing bulges are respectively attached to and sealed with the left; the support is provided with a support nut 10, the flashboard is provided with a flashboard nut 11, the screwing direction of the screw thread of the support nut is opposite to that of the screw thread of the flashboard nut, and the support nut and the flashboard nut are both in threaded connection with the valve rod.
The lower portion of the valve rod is provided with threads on a left-handed double line or more than two lines, the upper portion of the valve rod is provided with threads on a right-handed double line or more than two lines, the pitch of the valve rod is p, the number of threads (or the number of heads) is n, when the hand wheel rotates anticlockwise for one circle, the valve rod rises by a lead of one thread, namely np, under the action of the right-handed threads on the bracket nut and the upper portion of the valve rod, and simultaneously, under the action of the left-handed threads on the gate plate nut and the lower portion of the valve rod, the gate plate nut drives the gate plate to also rise by a lead of one thread, namely np, the rising distance of the gate plate is H =2np when the hand wheel rotates anticlockwise for one.
The left sealing surface and the right sealing surface are bilaterally symmetrical. The interval between the left sealing face and the right sealing face is gradually reduced from top to bottom, and the interval between the two sealing bulges is gradually reduced from top to bottom. The cross section of the sealing bulge is triangular, and the end part of the sealing bulge is in smooth transition. The sealing layer coated on the outer surface of the gate plate is formed by vulcanizing rubber. Be equipped with conical sealed pad 12 on the flashboard, be equipped with toper recess 13 on the valve gap inner wall top surface, sealed pad can seal up and install in the toper recess, and the valve rod runs through sealed pad and toper recess. The front and back sides of the gate are provided with guide ribs 14. The guide rib is matched with the inner wall of the valve body.
The middle of the flashboard is provided with a through hole, the upper part of the flashboard is provided with an inverted U-shaped connecting seat 15, a flashboard nut is arranged between the connecting seat and the upper part of the flashboard, the connecting seat is provided with a jack 16, and the lower part of the valve rod penetrates through the jack and the flashboard nut and is arranged in the through hole. The sealing bulge is of a C-shaped structure with a downward opening, a lower convex rib 17 which is triangular bulge is arranged on the lower end face of the gate plate, and two ends of the lower convex rib are arranged close to two ends of the sealing bulge.
Sealing rings 18 are arranged between the valve cover and the valve body and between the support and the valve cover, and a plurality of O-shaped rings 19 are arranged between the lower part of the support and the valve rod. The upper end of the valve rod extends out of the bracket, and the upper end of the valve rod is connected with a hand wheel 20. The support suit is on the valve rod, and the fastening of support nut is installed in the support upper end. An extension part 21 is arranged at the connecting position of the valve body and the valve cover, the valve cover is tightly connected on the extension part, a containing cavity is formed between the valve cover and the extension part, and the flashboard is arranged in the containing cavity when being opened.
After the flashboard was closed, the sealed arch of flashboard both sides was sealed with the left side on the valve body inner wall sealed face, the laminating of right side sealed face respectively, and flashboard surface cladding has the sealing layer moreover, and the sealing layer can take place to warp, and is sealed effectual. Realize the flashboard through rotating the valve rod and open and close the action, and with valve rod threaded connection's support nut, the screw thread of flashboard nut revolve to opposite, and support nut installs on the support, and the flashboard nut is installed on the flashboard, therefore the displacement of the in-process flashboard of rotating the valve rod is the twice of valve rod displacement, has improved the speed of opening and close of flashboard greatly.
In the closing process of the flashboard, firstly, the smooth transition position of the end part of the sealing bulge is contacted with the left sealing surface and the right sealing surface of the valve body, and because the contact area of the position is small, the valve body can deform under a smaller closing force and form reliable sealing, the torque required by rotating the valve rod is small, and the operation is light and flexible.
When the flashboard is fully opened, the conical sealing gasket on the flashboard is contacted with the conical groove on the inner wall of the valve cover and generates extrusion deformation, so that the sealing gasket tightly holds the valve rod, and a good sealing effect is formed among the sealing gasket, the valve cover and the valve rod. That is to say, the full open shutter plate has the effect of falling the seal.
Example 2: the utility model provides a high performance gate valve (see fig. 4, fig. 5, fig. 6), its structure is similar with embodiment 1, the main difference lies in being equipped with the through-hole in the middle of the flashboard in this embodiment, the through-hole is arranged in to the valve rod lower extreme, correspond with the through-hole on the valve body inner wall and be equipped with sealed boss 22, sealed boss edge is equipped with round sealed recess 23 on the valve body inner wall, through-hole lower extreme open position is equipped with chamfer 24, sealed boss surface is evagination arc structure, flashboard lower extreme through-hole edge is equipped with round sealed bulge loop 25, sealed bulge loop cross-section is the V-arrangement structure, the chamfer closely laminates on sealed boss surface, sealed bulge. A positioning column 26 is arranged on the sealing boss, a rotating sleeve 27 is rotatably arranged at the lower part of the positioning column, a liftable sliding sleeve 28 is sleeved at the upper part of the positioning column, a return spring 29 is arranged between the sliding sleeve and the positioning column, a plurality of blades 30 are uniformly arranged on the rotating sleeve, a rotating wheel 31 is arranged on the rotating sleeve, a section of arc-shaped meshing teeth 32 is arranged on the outer wall of the rotating wheel, the rotating wheel is connected with a shifting rod 33, the end part of the shifting rod is arranged in a sealing groove, a lifting rod 34 is arranged on the rotating sleeve, a rack 35 is arranged on the lifting rod, the rack is meshed with the meshing teeth for transmission, a connecting rod 36 extending downwards is connected on the sliding sleeve, a pushing block 37 is arranged at the end part of the connecting rod, a pushing surface 38 arranged obliquely is arranged on the pushing block, a sliding block 39 is arranged at the upper part of the rotating sleeve, abutting heads 40, a positioning spring is arranged between the sliding block and the rotating sleeve; the valve rod moves downwards to push the sliding sleeve to move downwards so that the pushing surface is abutted to the abutting head and pushes the sliding block to move, so that the guide surface pushes the lifting rod to move downwards, the rack on the lifting rod drives the rotating wheel to rotate, the deflector rod rotates upwards to enable the end part to be close to the rotating sleeve, the sliding sleeve continues to move the connecting rod downwards to be abutted to the abutting head, and the lifting rod stops moving; and the valve rod and the sliding sleeve stop moving until the sealing convex ring abuts against the sealing groove. The other structure is the same as embodiment 1.
The chamfer is tightly attached to the surface of the sealing boss, and the sealing convex ring is tightly attached to the sealing groove, so that the sealing performance between the lower part of the flashboard and the inner wall of the valve body is greatly improved. In the long-time working process of the gate valve, impurities are easily remained in the sealing groove, so that the sealing performance is influenced. When the flashboard was opened in this scheme, the driving lever tip was arranged in sealed recess, and the medium in the valve body drove the blade and rotates to realize changeing the rotation of cover, the impurity in the sealed recess was stirred along with changeing the cover in-process together to the driving lever, made impurity along with the sealed recess of medium outflow, prevented to remain impurity in sealed recess, guaranteed sealing performance. In the closing process of the flashboard, firstly, the valve rod moves downwards to push the sliding sleeve to move downwards so that the pushing surface is abutted to the abutting head and pushes the sliding block to move, so that the guide surface pushes the lifting rod to move downwards, the rack on the lifting rod drives the rotating wheel to rotate, the deflector rod rotates upwards so that the end part is close to the rotating sleeve, the deflector rod is arranged in the area where the through hole on the flashboard is located, the sliding sleeve continues to move the connecting rod downwards to abut against the abutting head, and at the moment, the lifting rod stops moving; and the valve rod and the sliding sleeve stop moving until the sealing convex ring abuts against the sealing groove. In the closing process of the flashboard, the driving lever is firstly rotated upwards to the area where the through hole is located, and the interference of the driving lever on the flashboard is avoided.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.

Claims (10)

1. A high-performance gate valve is characterized by comprising a valve body, a gate plate, a valve cover and a support, wherein the gate plate is installed in the valve body in a matched mode, the valve cover is connected between the valve body and the support, the gate plate is connected with a valve rod, a left sealing surface and a right sealing surface are arranged in the valve body and correspond to the gate plate, a sealing layer is coated on the outer surface of the gate plate, sealing bulges are arranged on two sides of the gate plate, and the two sealing bulges are respectively attached to and sealed with the; the support is provided with a support nut, the flashboard is provided with a flashboard nut, the screwing direction of the screw thread of the support nut is opposite to that of the screw thread of the flashboard nut, and the support nut and the flashboard nut are both in threaded connection with the valve rod.
2. The high performance gate valve of claim 1, wherein the sealing protrusion has a triangular cross-section and a rounded end.
3. The high-performance gate valve as claimed in claim 1, wherein the gate plate is provided with a tapered packing, the top surface of the inner wall of the valve cover is provided with a tapered recess, the packing is sealably mounted in the tapered recess, and the valve stem penetrates the packing and the tapered recess.
4. The high performance gate valve of claim 1, wherein the gate plate has a through hole in the middle, the upper portion of the gate plate has a connecting seat having an inverted U shape, the gate nut is installed between the connecting seat and the upper portion of the gate plate, the connecting seat has a socket, and the lower portion of the stem passes through the socket, the gate nut and is disposed in the through hole.
5. The high-performance gate valve as claimed in claim 1, wherein the sealing protrusion has a C-shaped structure with a downward opening, a lower rib having a triangular protrusion is provided on the lower end surface of the gate plate, and both ends of the lower rib are provided adjacent to both ends of the sealing protrusion.
6. A high performance gate valve according to any one of claims 1 to 5, wherein the distance between the left and right sealing surfaces decreases from top to bottom and the distance between the sealing projections decreases from top to bottom.
7. The high-performance gate valve according to any one of claims 1 to 5, wherein sealing rings are arranged between the valve cover and the valve body and between the support and the valve cover, and a plurality of O-rings are arranged between the lower part of the support and the valve rod.
8. A high performance gate valve according to any one of claims 1 to 5 wherein the upper end of the valve stem extends beyond the support bracket and the upper end of the valve stem is connected to a hand wheel.
9. The high-performance gate valve as claimed in any one of claims 1 to 5, wherein a through hole is formed in the middle of the gate plate, the lower end of the valve rod is disposed in the through hole, a sealing boss is disposed on the inner wall of the valve body corresponding to the through hole, a sealing groove is formed in the edge of the sealing boss on the inner wall of the valve body, a chamfer is disposed at the opening position of the lower end of the through hole, the surface of the sealing boss is in an outer convex arc structure, a sealing convex ring is disposed on the edge of the through hole on the lower end of the gate plate, the cross section of the sealing convex ring is in a V-shaped structure, the.
10. The high-performance gate valve of claim 9, wherein the sealing boss has a positioning post, a rotating sleeve is rotatably mounted on the lower portion of the positioning post, a liftable sliding sleeve is sleeved on the upper portion of the positioning post, a return spring is mounted between the sliding sleeve and the positioning post, a plurality of blades are uniformly mounted on the rotating sleeve, a rotating wheel is mounted on the rotating sleeve, a section of curved engaging teeth is arranged on the outer wall of the rotating wheel, the rotating wheel is connected with a shifting rod, the end portion of the shifting rod is disposed in the sealing groove, a lifting rod is mounted on the rotating sleeve, a rack is disposed on the lifting rod, the rack is engaged with the engaging teeth for transmission, the sliding sleeve is connected with a connecting rod extending downwards, the end portion of the connecting rod is provided with a pushing block, the pushing block is provided with a pushing surface arranged obliquely, a sliding block is mounted on the upper portion of the rotating, a return spring is arranged between the lifting rod and the rotating sleeve, and a positioning spring is arranged between the sliding block and the rotating sleeve; the valve rod moves downwards to push the sliding sleeve to move downwards so that the pushing surface is abutted to the abutting head and pushes the sliding block to move, so that the guide surface pushes the lifting rod to move downwards, the rack on the lifting rod drives the rotating wheel to rotate, the deflector rod rotates upwards to enable the end part to be close to the rotating sleeve, the sliding sleeve continues to move the connecting rod downwards to be abutted to the abutting head, and the lifting rod stops moving; and the valve rod and the sliding sleeve stop moving until the sealing convex ring abuts against the sealing groove.
CN202011278640.0A 2020-11-16 2020-11-16 High-performance gate valve Active CN112483672B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113154070A (en) * 2021-06-04 2021-07-23 泉高阀门科技有限公司 Encryption gate valve convenient to maintain
CN117704090A (en) * 2024-01-03 2024-03-15 吉泰阀门集团有限公司 High-temperature high-pressure electric gate valve of preventing disengaging that stability is high

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5253428U (en) * 1975-10-16 1977-04-16
DD233402A5 (en) * 1985-04-19 1986-02-26 Jakovic,Mladen,Ch WEDGE SLIDE
CN2329814Y (en) * 1997-09-18 1999-07-21 林瑞义 Elastic valve seat wedge gate valve
CN2709727Y (en) * 2004-04-30 2005-07-13 孙兴聚 Double-sealing blind rod sluice valve
CN201866303U (en) * 2010-12-02 2011-06-15 梁敬喜 Draw-in gate valve
CN202451866U (en) * 2012-01-13 2012-09-26 凯泰阀门(集团)有限公司 Improved soft sealing gate valve
CN204004498U (en) * 2014-07-05 2014-12-10 浙江永高阀门制造有限公司 A kind of gate valve
CN108426077A (en) * 2018-05-14 2018-08-21 江苏精异锻造股份有限公司 A kind of anti abrasive bellows gate valve
CN207935463U (en) * 2018-01-31 2018-10-02 宁波田湖阀门科技有限公司 The hard seal gate valve of air-conditioning HVAC system wedge-type
CN209164627U (en) * 2018-12-07 2019-07-26 河南宇宙流体科技有限公司 A kind of blowdown valve
CN110131429A (en) * 2019-05-15 2019-08-16 陈英岳 A kind of manual gate valve with filtering function
CN111637255A (en) * 2020-06-11 2020-09-08 江苏圣泰阀门有限公司 High-pressure sealing check valve

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5253428U (en) * 1975-10-16 1977-04-16
DD233402A5 (en) * 1985-04-19 1986-02-26 Jakovic,Mladen,Ch WEDGE SLIDE
CN2329814Y (en) * 1997-09-18 1999-07-21 林瑞义 Elastic valve seat wedge gate valve
CN2709727Y (en) * 2004-04-30 2005-07-13 孙兴聚 Double-sealing blind rod sluice valve
CN201866303U (en) * 2010-12-02 2011-06-15 梁敬喜 Draw-in gate valve
CN202451866U (en) * 2012-01-13 2012-09-26 凯泰阀门(集团)有限公司 Improved soft sealing gate valve
CN204004498U (en) * 2014-07-05 2014-12-10 浙江永高阀门制造有限公司 A kind of gate valve
CN207935463U (en) * 2018-01-31 2018-10-02 宁波田湖阀门科技有限公司 The hard seal gate valve of air-conditioning HVAC system wedge-type
CN108426077A (en) * 2018-05-14 2018-08-21 江苏精异锻造股份有限公司 A kind of anti abrasive bellows gate valve
CN209164627U (en) * 2018-12-07 2019-07-26 河南宇宙流体科技有限公司 A kind of blowdown valve
CN110131429A (en) * 2019-05-15 2019-08-16 陈英岳 A kind of manual gate valve with filtering function
CN111637255A (en) * 2020-06-11 2020-09-08 江苏圣泰阀门有限公司 High-pressure sealing check valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113154070A (en) * 2021-06-04 2021-07-23 泉高阀门科技有限公司 Encryption gate valve convenient to maintain
CN113154070B (en) * 2021-06-04 2023-08-22 泉高阀门科技有限公司 Encryption gate valve convenient to maintain
CN117704090A (en) * 2024-01-03 2024-03-15 吉泰阀门集团有限公司 High-temperature high-pressure electric gate valve of preventing disengaging that stability is high
CN117704090B (en) * 2024-01-03 2024-08-13 吉泰阀门集团有限公司 High-temperature high-pressure electric gate valve of preventing disengaging that stability is high

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