CN111271467A - Gate valve - Google Patents
Gate valve Download PDFInfo
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- CN111271467A CN111271467A CN202010062573.2A CN202010062573A CN111271467A CN 111271467 A CN111271467 A CN 111271467A CN 202010062573 A CN202010062573 A CN 202010062573A CN 111271467 A CN111271467 A CN 111271467A
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- Prior art keywords
- valve
- rod
- communicating pipe
- vertical
- core assembly
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Classifications
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/504—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating means being rotable, rising, and having internal threads which co-operate with threads on the outside of the valve body
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a gate valve which comprises a valve body, wherein the valve body is provided with a valve cavity with an opening at the upper end, and a valve cover is fixedly arranged at the opening at the upper end of the valve cavity of the valve body; the left side of the valve body is provided with a left communicating pipe communicated with the valve cavity, and the right side of the valve body is provided with a right communicating pipe communicated with the valve cavity; a vertical mounting plate is arranged in the valve cavity, and two vertical side plates are arranged above the vertical mounting plate in parallel; connecting blocks are arranged above the two vertical side plates; a left valve core assembly and a right valve core assembly are arranged between the two vertical side plates; a sliding hole is formed in the connecting block along the vertical direction, a power rod is connected in the sliding hole in a sliding mode, and the power rod is used for driving the left valve core assembly to open and close the left communicating pipe and driving the right valve core assembly to open and close the right communicating pipe; a screw rod for driving the power rod to move up and down is connected to the valve cover through threads; the gate valve is simple in structure, friction between the valve plate and the valve seat can be reduced, and the service life of the gate valve is greatly prolonged.
Description
Technical Field
The invention belongs to the technical field of pipeline valves, and particularly relates to a gate valve.
Background
A flat gate valve is a sliding valve whose closing member is a parallel gate plate. The valve is widely applied to industrial equipment, and a closing member of the valve generally consists of a gate and a valve seat. The pressing force of the gate plate to the valve seat is controlled by the pressure of a medium acting on the gate plate, and the medium pushes the gate plate to press the valve seat so as to form a seal, so that the defects of the method are that: in the opening and closing process of the valve, friction can be generated between the flashboard and the valve seat, so that the sealing surface of the flashboard and the sealing surface of the valve seat are easily damaged by friction, and the service life is short; meanwhile, in the opening and closing processes of the valve, frictional resistance is generated between the flashboard and the valve seat, so that the required external driving device is increased, and the cost is increased.
Disclosure of Invention
The invention aims to provide a gate valve which is simple in structure, can reduce friction between a valve plate and a valve seat and greatly prolongs the service life of the gate valve.
In order to achieve the purpose, the invention provides the following technical scheme: a gate valve comprises a valve body, wherein the valve body is provided with a valve cavity with an opening at the upper end, and a valve cover is fixedly arranged at the opening at the upper end of the valve cavity of the valve body; the left side of the valve body is provided with a left communicating pipe communicated with the valve cavity, the right side of the valve body is provided with a right communicating pipe communicated with the valve cavity, and the left communicating pipe and the right communicating pipe are coaxially arranged; a vertical mounting plate is axially arranged in the valve cavity along a direction perpendicular to the left communicating pipe, and two vertical side plates are arranged above the vertical mounting plate side by side along a direction perpendicular to the vertical mounting plate; connecting blocks are arranged above the two vertical side plates; a left valve core assembly is arranged on the left side of the vertical mounting plate between the two vertical side plates, a right valve core assembly is arranged on the right side of the vertical mounting plate, the left valve core assembly is used for controlling the on-off of the left communicating pipe, and the right valve core assembly is used for controlling the on-off of the right communicating pipe; a sliding hole is formed in the connecting block along the vertical direction, a power rod is connected in the sliding hole in a sliding mode, and the power rod is used for driving the left valve core assembly to open and close the left communicating pipe and driving the right valve core assembly to open and close the right communicating pipe; the valve cover is in threaded connection with a screw rod, and the lower end of the screw rod is located in the valve cavity and connected with the upper end of the power rod to drive the power rod to move up and down.
According to the technical scheme, when the gate valve is closed, the screw rod is rotated to drive the power rod to move downwards, when the power rod moves downwards, the left valve core assembly is driven to move leftwards and is pressed on the left communicating pipe, and meanwhile, the right valve core assembly is driven to move rightwards and is pressed on the right communicating pipe, so that the gate valve is closed; when the gate valve is opened, the screw rod is rotated to drive the power rod to move upwards, and when the power rod moves upwards, the left valve core assembly is driven to withdraw to open the left communicating pipe, and meanwhile, the right valve core assembly is driven to withdraw to open the right communicating pipe.
In a further technical scheme, the left valve core assembly comprises a left valve plate, a left connecting rod, a left first rod and a left second rod, the upper ends of the left first rod and the left second rod are hinged between the two vertical side plates, and the lower ends of the left first rod and the left second rod are hinged on the left connecting rod; a parallelogram structure is formed among the left first rod, the left second rod, the left connecting rod and the vertical side plate, and the left connecting rod is horizontally arranged; the left valve plate is fixedly arranged at the left end of the left connecting rod and used for controlling the on-off of the left communicating pipe;
the circumference side of the upper end of the left two-bar is provided with a left convex tooth, the lower end of the power bar is provided with a sliding block which is connected between the two vertical side plates in a sliding manner, and the left side face of the sliding block is provided with a left rack which is meshed with the left convex tooth.
In a further technical scheme, the right valve element assembly comprises a right valve plate, a right connecting rod, a right first rod and a right second rod, the upper ends of the right first rod and the right second rod are hinged between the two vertical side plates, and the lower ends of the right first rod and the right second rod are hinged on the right connecting rod; a parallelogram structure is formed among the right first rod, the right second rod, the right connecting rod and the vertical side plate, and the right connecting rod is horizontally arranged; the right valve plate is fixedly arranged at the right end of the right connecting rod and used for controlling the on-off of the right communicating pipe;
the circumference side of two pole upper ends in the right side is equipped with right dogtooth, be equipped with the right rack with right dogtooth meshing on the right flank of sliding block.
In a further technical scheme, a first mounting groove with an open upper end is formed in the upper end of the power rod, a convex shoulder rotatably connected into the first mounting groove is arranged on the circumferential side face of the lower end of the screw rod, and a baffle ring in sliding connection with the convex shoulder is in threaded connection with the opening of the first mounting groove.
In a further technical scheme, a sliding groove is formed in the inner side wall of the valve cavity in the vertical direction, and the vertical mounting plate is connected in the sliding groove in a sliding mode.
In a further technical scheme, a second mounting groove is formed in the inner side wall of the sliding hole in the axial direction perpendicular to the sliding hole, a positioning ball is arranged in the second mounting groove, and a first spring used for forcing the positioning ball to be pressed on the power rod is arranged in the second mounting groove; and the side surface of the outer circumference of the power rod is provided with a positioning hole matched with the positioning ball. When the left communicating pipe and the right communicating pipe are closed, the positioning beads are separated from the positioning holes, and when the left communicating pipe and the right communicating pipe are opened, the positioning beads enter the positioning holes.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) when the gate valve is opened and closed, the left valve disc, the left communicating pipe, the right valve plate and the right communicating pipe cannot generate friction, so that the service life of the gate valve is longer;
(2) the rack and the gear and the link mechanism are used for controlling the left valve plate and the right valve plate to move more reliably and conveniently;
(3) all operations can be completed only by rotating the screw rod, and the operation is simple and convenient.
Drawings
FIG. 1 is a cross-sectional view of the present invention as closed;
FIG. 2 is a cross-sectional view of the invention with the left and right valve plates retracted;
FIG. 3 is a cross-sectional view of the gate valve of the present invention open;
FIG. 4 is a structural view of the vertical mounting plate of the present invention when the left and right valve plates are retracted;
FIG. 5 is a structural view of the vertical mounting plate of the present invention when the left and right valve plates are opened;
fig. 6 is an enlarged schematic view of a portion a in fig. 2.
Detailed Description
Referring to fig. 1 to 6, a gate valve includes a valve body 21, the valve body 21 has a valve cavity 211 with an upper opening, and a valve cover 25 is fixedly installed on the valve body 21 at the upper opening of the valve cavity 211; a left communicating pipe 22 communicated with the valve cavity 211 is arranged on the left side of the valve body 21, a right communicating pipe 23 communicated with the valve cavity 211 is arranged on the right side of the valve body, and the left communicating pipe 22 and the right communicating pipe 23 are coaxially arranged; a vertical mounting plate 9 is axially arranged in the valve cavity 211 along a direction perpendicular to the left communicating pipe 22, and two vertical side plates 91 are arranged above the vertical mounting plate 9 in parallel along a direction perpendicular to the vertical mounting plate 9; connecting blocks 92 are arranged above the two vertical side plates 91; a left valve core assembly is arranged between the two vertical side plates 91 on the left side of the vertical mounting plate 9, a right valve core assembly is arranged on the right side of the vertical mounting plate 9, the left valve core assembly is used for controlling the on-off of the left communicating pipe 22, and the right valve core assembly is used for controlling the on-off of the right communicating pipe 23; a sliding hole 93 is formed in the connecting block 92 along the vertical direction, a power rod 2 is connected in the sliding hole 93 in a sliding manner, and the power rod 2 is used for driving the left valve core assembly to open and close the left communicating pipe 22 and driving the right valve core assembly to open and close the right communicating pipe 23; the valve cover 25 is in threaded connection with a screw rod 1, and the lower end of the screw rod 1 is located in the valve cavity 211 and connected with the upper end of the power rod 2 to drive the power rod 2 to move up and down.
The left valve core assembly comprises a left valve plate 8a, a left connecting rod 6a, a left first rod 4a and a left second rod 5a, the upper ends of the left first rod 4a and the left second rod 5a are hinged between the two vertical side plates 91, and the lower ends of the left first rod 4a and the left second rod 5a are hinged on the left connecting rod 6 a; a parallelogram structure is formed among the first left rod 4a, the second left rod 5a, the left connecting rod 6a and the vertical side plate 91, and the left connecting rod 6a is horizontally arranged; the left valve plate 8a is fixedly arranged at the left end of the left connecting rod 6a and is used for controlling the on-off of the left communicating pipe 22; the side surface of the circumference of the upper end of the second left rod 5a is provided with a left convex tooth 5a1, the lower end of the power rod 2 is provided with a sliding block 27 connected between the two vertical side plates 91 in a sliding way, and the left side surface of the sliding block 27 is provided with a left rack 28 meshed with the left convex tooth 5a 1. The right valve core assembly comprises a right valve plate 8b, a right connecting rod 6b, a right first rod 4b and a right second rod 5b, the upper ends of the right first rod 4b and the right second rod 5b are hinged between the two vertical side plates 91, and the lower ends of the right first rod 4b and the right second rod 5b are hinged on the right connecting rod 6 b; a parallelogram structure is formed among the right first rod 4b, the right second rod 5b, the right connecting rod 6b and the vertical side plate 91, and the right connecting rod 6b is horizontally arranged; the right valve plate 8b is fixedly arranged at the right end of the right connecting rod 6b and is used for controlling the on-off of the right communicating pipe 23; the circumferential side surface of the upper end of the right two rods 5b is provided with a right convex tooth 5b1, and the right side surface of the sliding block 27 is provided with a right rack 29 meshed with the right convex tooth 5b 1.
The upper end of the power rod 2 is provided with a first mounting groove 201 with an open upper end, the circumferential side surface of the lower end of the screw rod 1 is provided with a convex shoulder 1a rotatably connected in the first mounting groove 201, and the opening of the first mounting groove 201 is in threaded connection with a baffle ring 2b in sliding connection with the convex shoulder 1 a.
The inside wall of the valve cavity 211 is provided with a sliding groove 7a along the vertical direction, and the vertical mounting plate 9 is slidably connected in the sliding groove 7 a. A second mounting groove 202 is formed in the inner side wall of the sliding hole 93 along the axial direction perpendicular to the sliding hole 93, and a positioning ball 3 and a first spring 10 for forcing the positioning ball 3 to be pressed on the power rod 2 are arranged in the second mounting groove 202; and the side surface of the outer circumference of the power rod 2 is provided with a positioning hole 2a matched with the positioning bead 3. When left communicating pipe 22 and right communicating pipe 23 are closed, positioning bead 3 is disengaged from positioning hole 2a, and when left communicating pipe 22 and right communicating pipe 23 are opened, positioning bead 3 enters positioning hole 2 a.
As shown in fig. 1, the gate valve is a simple structure of the gate valve of the present invention, when the gate valve is assembled, the left valve plate 8a and the right valve plate 8b need to be contracted to the state shown in fig. 2, and at this time, the positioning ball 3 enters the positioning hole 2a under the action of the first spring 10, so that the power rod 2 is fixed.
When the gate valve is changed from an open state to a closed state, the screw rod 1 is rotated, so that the screw rod 1 drives the vertical mounting plate 9 to move downwards through the power rod 2, the positioning beads 3 and the connecting block 92, at this time, due to the matching of the vertical mounting plate 9 and the chute 7a, the vertical mounting plate 9 cannot rotate along with the screw rod 1 in the descending process, and due to the positioning effect of the positioning beads 3, in the integral descending process of the vertical mounting plate 9, the power rod 2 cannot generate relative displacement with the vertical mounting plate 9, so that the phenomenon that the left valve block 8a and the right valve block 8b of the vertical mounting plate 9 are not in place is opened, when the integral vertical mounting plate 9 descends to the lowest end of the chute 7a as shown in figure 2, the screw rod 1 continues to rotate, at this time, the power rod 2 is pushed to continuously descend against the positioning effect of the positioning beads 3, the positioning beads 3 are separated from the positioning holes 2a, and in the descending process of the power rod 2, the left, when the left second rod 5a rotates, the left first rod 4a and the left connecting rod 6a drive the left valve plate 8a to move towards the left communicating pipe 22 until the left valve plate is tightly attached to the left communicating pipe 22, and the left communicating pipe 22 is closed; meanwhile, the right two rods 5b are driven to rotate by the matching of the right rack 29 and the right convex teeth 5b1 in the descending process of the power rod 2, and the right two rods 5b drive the right valve plate 8b to move towards the right communicating pipe 23 by the right one rod 4b and the right connecting rod 6b when rotating until the right valve plate is tightly attached to the right communicating pipe 23 and the right communicating pipe 23 is closed; when the screw 1 cannot rotate downwards, the screw 1 stops rotating and is locked, and the gate valve is closed.
When the gate valve is changed from a closed state to an open state, the screw rod 1 is loosened and rotated to enable the screw rod to ascend, at the moment, under the action of the self weight of the vertical mounting plate 9 and medium pressure on two sides of the left communicating pipe 22 and the right communicating pipe 23, the whole vertical mounting plate 9 is firstly kept in the original position to be motionless, the power rod 2 ascends to drive the left second rod 5a to reversely rotate through the matching of the left rack 28 and the left convex tooth 5a1, the left second rod 5a drives the left valve plate 8a to move away from the left communicating pipe 22 through the left first rod 4a and the left connecting rod 6a when rotating, and the left communicating; meanwhile, the right two rods 5b are driven to rotate reversely by the matching of the right rack 29 and the right convex teeth 5b1 in the ascending process of the power rod 2, the right two rods 5b drive the right valve plate 8b to move away from the right communicating pipe 23 by the right one rod 4b and the right connecting rod 6b when rotating, and the right communicating pipe 23 is opened; when the power rod 2 moves upwards until the positioning ball 3 reenters the positioning hole 2a, as shown in fig. 2, the screw rod 1 continues to rotate, so that the vertical mounting plate 9 is integrally lifted up through the matching of the shoulder 1a and the retaining ring 2b, and moves upwards to the position shown in fig. 3, and the opening of the gate valve is completed; in the opening and closing processes of the gate valve, friction is not generated between the left valve plate 8a and the left communicating pipe 22 and between the right valve plate 8b and the right communicating pipe 23, so that the service life of the gate valve can be prolonged, and the gate valve is not easy to damage.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A gate valve is characterized by comprising a valve body, wherein the valve body is provided with a valve cavity with an upper end opening, and a valve cover is fixedly arranged at the upper end opening of the valve cavity of the valve body; the left side of the valve body is provided with a left communicating pipe communicated with the valve cavity, the right side of the valve body is provided with a right communicating pipe communicated with the valve cavity, and the left communicating pipe and the right communicating pipe are coaxially arranged; a vertical mounting plate is axially arranged in the valve cavity along a direction perpendicular to the left communicating pipe, and two vertical side plates are arranged above the vertical mounting plate side by side along a direction perpendicular to the vertical mounting plate; connecting blocks are arranged above the two vertical side plates; a left valve core assembly is arranged on the left side of the vertical mounting plate between the two vertical side plates, a right valve core assembly is arranged on the right side of the vertical mounting plate, the left valve core assembly is used for controlling the on-off of the left communicating pipe, and the right valve core assembly is used for controlling the on-off of the right communicating pipe; a sliding hole is formed in the connecting block along the vertical direction, a power rod is connected in the sliding hole in a sliding mode, and the power rod is used for driving the left valve core assembly to open and close the left communicating pipe and driving the right valve core assembly to open and close the right communicating pipe; the valve cover is in threaded connection with a screw rod, and the lower end of the screw rod is located in the valve cavity and connected with the upper end of the power rod to drive the power rod to move up and down.
2. The gate valve of claim 1, wherein the left valve core assembly comprises a left valve plate, a left connecting rod, a left first rod and a left second rod, the upper ends of the left first rod and the left second rod are hinged between the two vertical side plates, and the lower ends of the left first rod and the left second rod are hinged on the left connecting rod; a parallelogram structure is formed among the left first rod, the left second rod, the left connecting rod and the vertical side plate, and the left connecting rod is horizontally arranged; the left valve plate is fixedly arranged at the left end of the left connecting rod and used for controlling the on-off of the left communicating pipe;
the circumference side of the upper end of the left two-bar is provided with a left convex tooth, the lower end of the power bar is provided with a sliding block which is connected between the two vertical side plates in a sliding manner, and the left side face of the sliding block is provided with a left rack which is meshed with the left convex tooth.
3. The gate valve of claim 2, wherein the right valve core assembly comprises a right valve plate, a right connecting rod, a right first rod and a right second rod, the upper ends of the right first rod and the right second rod are hinged between the two vertical side plates, and the lower ends of the right first rod and the right second rod are hinged on the right connecting rod; a parallelogram structure is formed among the right first rod, the right second rod, the right connecting rod and the vertical side plate, and the right connecting rod is horizontally arranged; the right valve plate is fixedly arranged at the right end of the right connecting rod and used for controlling the on-off of the right communicating pipe;
the circumference side of two pole upper ends in the right side is equipped with right dogtooth, be equipped with the right rack with right dogtooth meshing on the right flank of sliding block.
4. The gate valve of claim 1, wherein the power rod is provided at an upper end thereof with a first mounting groove opened at an upper end thereof, the screw rod is provided at a circumferential side of a lower end thereof with a shoulder rotatably coupled in the first mounting groove, and an opening of the first mounting groove is threadedly coupled with a stopper ring slidably coupled with the shoulder.
5. The gate valve of claim 1, wherein the valve chamber has a chute on the inner side wall thereof in the vertical direction, and the vertical mounting plate is slidably connected in the chute.
6. The gate valve of claim 5, wherein a second mounting groove is formed on the inner side wall of the slide hole along the axial direction perpendicular to the slide hole, a positioning ball is arranged in the second mounting groove, and a first spring is used for forcing the positioning ball to press on the power rod; and the side surface of the outer circumference of the power rod is provided with a positioning hole matched with the positioning ball. When the left communicating pipe and the right communicating pipe are closed, the positioning beads are separated from the positioning holes, and when the left communicating pipe and the right communicating pipe are opened, the positioning beads enter the positioning holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010062573.2A CN111271467B (en) | 2020-01-20 | 2020-01-20 | Gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010062573.2A CN111271467B (en) | 2020-01-20 | 2020-01-20 | Gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111271467A true CN111271467A (en) | 2020-06-12 |
| CN111271467B CN111271467B (en) | 2023-03-24 |
Family
ID=70996827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010062573.2A Active CN111271467B (en) | 2020-01-20 | 2020-01-20 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111271467B (en) |
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| GB372418A (en) * | 1931-02-13 | 1932-05-12 | Franz Seiffert & Co Ag | Improvements in and relating to slide valves |
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| CN2804512Y (en) * | 2005-06-08 | 2006-08-09 | 上海凯工阀门有限公司 | Gas gate valve |
| EP2220412A1 (en) * | 2007-12-20 | 2010-08-25 | Oerlikon Solar Ip Ag, Trübbach | Gate valve for a vacuum chamber and vacuum chamber |
| CN102094989A (en) * | 2011-03-04 | 2011-06-15 | 济南煜龙气力输送设备有限公司 | Pneumatic charging and discharging valve |
| CN104006167A (en) * | 2014-05-30 | 2014-08-27 | 长沙矿冶研究院有限责任公司 | High-temperature exhaust valve used for industrial kiln |
| CN206017826U (en) * | 2016-08-25 | 2017-03-15 | 晟福（天津）流体自动控制设备有限公司 | parallel double-flashboard gate valve |
| CN206754412U (en) * | 2017-01-11 | 2017-12-15 | 浙江三迪阀业有限公司 | A kind of gate valve |
| CN206889806U (en) * | 2016-06-03 | 2018-01-16 | 香港中华煤气有限公司 | Pipeline shutoff equipment |
| FR3073031A1 (en) * | 2017-10-30 | 2019-05-03 | Aereco | EPICYCLOIDAL IRIS VALVE |
| CN110159786A (en) * | 2019-06-21 | 2019-08-23 | 邵延荣 | It is a kind of without abrasion ball valve |
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2020
- 2020-01-20 CN CN202010062573.2A patent/CN111271467B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB372418A (en) * | 1931-02-13 | 1932-05-12 | Franz Seiffert & Co Ag | Improvements in and relating to slide valves |
| CN2608781Y (en) * | 2003-03-26 | 2004-03-31 | 赵广路 | Valve |
| CN2649882Y (en) * | 2003-10-31 | 2004-10-20 | 刘树宇 | Dual-arc-piece sluice valve |
| CN2755371Y (en) * | 2004-10-10 | 2006-02-01 | 天津市圣恺工业技术发展有限公司 | Reciprocating and sliding ceramic sealed sluice valve with double flashboard |
| CN2804512Y (en) * | 2005-06-08 | 2006-08-09 | 上海凯工阀门有限公司 | Gas gate valve |
| EP2220412A1 (en) * | 2007-12-20 | 2010-08-25 | Oerlikon Solar Ip Ag, Trübbach | Gate valve for a vacuum chamber and vacuum chamber |
| CN102094989A (en) * | 2011-03-04 | 2011-06-15 | 济南煜龙气力输送设备有限公司 | Pneumatic charging and discharging valve |
| CN104006167A (en) * | 2014-05-30 | 2014-08-27 | 长沙矿冶研究院有限责任公司 | High-temperature exhaust valve used for industrial kiln |
| CN206889806U (en) * | 2016-06-03 | 2018-01-16 | 香港中华煤气有限公司 | Pipeline shutoff equipment |
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