CN103644315A - Long-life knife gate valve - Google Patents
Long-life knife gate valve Download PDFInfo
- Publication number
- CN103644315A CN103644315A CN201310693550.1A CN201310693550A CN103644315A CN 103644315 A CN103644315 A CN 103644315A CN 201310693550 A CN201310693550 A CN 201310693550A CN 103644315 A CN103644315 A CN 103644315A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- flashboard
- knife
- seal ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- 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
- F16K3/0281—Guillotine or blade-type valves, e.g. no passage through the valve member
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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
- F16K3/0227—Packings
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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
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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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
- F16K3/30—Details
- F16K3/316—Guiding of the slide
- F16K3/3165—Guiding of the slide with rollers or balls
Abstract
The invention discloses a long-life knife gate valve which comprises a valve body, a gate plate and a sealing ring, wherein a support frame, a valve rod, a transmission part and balancing poles are arranged at the upper part of the valve body; sliding chutes are formed in the support frame and located on two edges of the gate plate; two ends of each balancing pole are mounted in the sliding chutes and in rolling contact with the gate plate; the upper part of the inner wall of a valve cavity adopts a step type structure, and the lower part of the inner wall of the valve cavity adopts a platform structure; the sealing ring comprises two independent ring bodies; outer circumferential surfaces of the ring bodies are in interference fit with inner walls of valve cavities of two parts of the valve body to form sealing; an external lug of the sealing ring is located on the outer wall of the valve body; diagonal planes of the two sealing ring bodies at the upper part of the valve cavity are contacted; a V-shaped blade at the lower part of the gate plate is located at the joint of the diagonal planes of the two sealing ring bodies, and a V-shaped groove symmetric to the gate plate is formed in the valve cavity; sealing strips are arranged on the valve body at the upper part of the valve cavity; and cylindrical ribs are arranged on the sealing strips. According to the long-life knife gate valve, the structure design is ingenious, the service life of the gate valve far surpasses that of a conventional gate valve, the use is convenient, and on-line maintenance, overhaul and replacement can be realized.
Description
Technical field
The present invention relates to a kind of knife-shape gate valve, relate in particular to a kind of long lifetime knife-shape gate valve.
Background technique
The seal ring that existing knife-shape gate valve is positioned at valve pocket is mainly divided into two kinds, a kind of being arranged in the middle of valve body, in a kind of seal groove that is mounted in valve seat, the seal ring of these two kinds of modes is arranged in knife-shape gate valve while being production, if seal ring exists part or small breakage all can cause whole deck valve door sealing to lose efficacy, and the pattern of seal ring has directly determined effect and the working life of sealing; In addition because flashboard is rotarily driven and moved up and down by manpower or motor by screw rod, after entering inside, flashboard cannot be confirmed whether on earth, tend to twist dead, to seal ring, be also a kind of destruction like this, long-term excessive compression causes seal failure, simultaneously, flashboard is in the process that proposes and insert, capital exists and waves, and this waving can be pushed valve body and seal ring, and generation is cut and made gate valve accelerate to damage.Guarantee the working life of cutter type gate valve, guarantee the sealing effect of gate valve simultaneously, just need a kind of rational structure, but equal unexposed this kind of long lifetime structures of existing cutter type gate valve.
Summary of the invention
For solving problems of the prior art, the object of the present invention is to provide a kind of long lifetime cutter type gate valve.
For achieving the above object, the technological means that the present invention takes is: a kind of long lifetime knife-shape gate valve, comprise valve body, flashboard, seal ring, described valve body top is provided with driving mechanism, in the middle of bottom, be set to valve pocket, described driving mechanism comprises supporting frame, valve rod, driving component, balancing pole, valve rod is arranged on supporting frame middle part, its upper end connection for transmission part, lower end connects flashboard, the both sides that are positioned at flashboard at supporting frame are provided with sliding-groove, and the two ends of balancing pole are arranged in loose slot, roll and contact with flashboard; Described flashboard is arranged on valve body, by valve body be divided into first half valve body and the later half valve body of symmetry, first half valve body and later half valve body place valve pocket upper inside wall are set to staircase structural model, bottom is set to platform structure; Described seal ring is elastic seal ring, be set to independently two cirque body, its outer peripheral surface forms sealing with the valve pocket inwall interference fit of two halves valve body respectively, seal ring external ear is positioned at valve outer wall, two seal rings that are positioned at valve pocket top contact with scarf, flashboard bottom is set to V-arrangement blade-like, is positioned at two seal ring scarf jointings, and the valve pocket being positioned at herein offers eight shape grooves with flashboard symmetry; On the valve body on valve pocket top, be provided with Stamping Steel Ribbon, on Stamping Steel Ribbon, be provided with cylinder rib.
Further, described Stamping Steel Ribbon is symmetrical arranged two with flashboard, between itself and valve body, is also provided with adjusting bolt.
Further, described flashboard is realized and being flexibly connected by connecting rod and spring clip with valve rod.
Further, described driving component is manually to coil or motor.
Further, described Stamping Steel Ribbon offers arc groove along the length direction of described flashboard, is provided with lubricating layer in arc groove, and cylinder rib is arranged in arc groove.
Further, described balancing pole arranges two, is positioned at flashboard both sides, and balancing pole adopts metallic rod overcoat abrasive rubber.
The invention has the beneficial effects as follows: due to the structure of design balance bar, Stamping Steel Ribbon and inner seal rings and valve pocket and flashboard cleverly, make knife-shape gate valve working life of this structure considerably beyond the working life of existing gate valve; And the design is easy to use, can realize on-line maintenance, maintenance and replacing.
Accompanying drawing explanation
Below in conjunction with view and embodiment, the present invention is described in detail.
Fig. 1 is structural representation of the present invention;
Fig. 2 is cross-sectional view of the present invention;
Fig. 3 is partial enlarged drawing of the present invention.
In figure: 1, valve body, 2, flashboard, 3, seal ring, 4, supporting frame, 5, valve rod, 6, driving component, 7, balancing pole, 8, sliding-groove, 9, valve pocket, 10, seal ring external ear, 11, scarf interface, 12, eight shape grooves, 13, Stamping Steel Ribbon, 14, cylinder rib, 15, adjusting bolt.
Embodiment
A kind of long lifetime knife-shape gate valve as shown in Figure 1, 2, 3, comprise valve body 1, flashboard 2, seal ring 3, described valve body 1 top is provided with driving mechanism, in the middle of bottom, is set to valve pocket 9, and described driving mechanism comprises supporting frame 4, valve rod 5, driving component 6, balancing pole 7, valve rod 5 is arranged on supporting frame 4 middle parts, its upper end connection for transmission part 6, lower end connects flashboard 2, and the both sides that are positioned at flashboard 2 at supporting frame 4 are provided with sliding-groove 8, the two ends of balancing pole 7 are arranged in loose slot 8, roll and contact with flashboard 2; Described flashboard 2 is arranged on valve body 1, by valve body 1 be divided into first half valve body and the later half valve body of symmetry, first half valve body and later half valve body place valve pocket 9 upper inside wall are set to staircase structural model, bottom is set to platform structure; Described seal ring 3 is elastic seal ring, be set to independently two cirque body, its outer peripheral surface forms sealing with the valve pocket 9 inwall interference fit of two halves valve body respectively, seal ring external ear 10 is positioned at valve body 1 outer wall, two seal rings that are positioned at valve pocket 9 tops contact with scarf, flashboard 2 bottoms are set to V-arrangement blade-like, are positioned at two seal ring scarf interface 11 places, and the valve pocket 9 being positioned at herein offers eight shape grooves 12 with flashboard 2 symmetries; On the valve body on valve pocket top, be provided with Stamping Steel Ribbon 13, on Stamping Steel Ribbon 13, be provided with cylinder rib 14.
Described Stamping Steel Ribbon 13 is symmetrical arranged two with flashboard 2, between itself and valve body 1, is also provided with adjusting bolt 15.
Described flashboard 2 is realized and being flexibly connected by connecting rod and spring clip with valve rod 5.
Described driving component 6 is manually to coil or motor.
Described Stamping Steel Ribbon 13 offers arc groove along the length direction of described flashboard, is provided with lubricating layer in arc groove, and cylinder rib 14 is arranged in arc groove.
Described balancing pole 7 arranges two, is positioned at flashboard 2 both sides, and balancing pole 7 adopts metallic rod overcoat abrasive rubber.
In use, when driving component 6 drives flashboard Shang Xia 2 by valve rod, particularly during manual operation, due to can not be at the uniform velocity upper and lower, the imbalance causing be taken the power on flashboard to, by balancing pole 7, can well solve, and owing to having loose slot 8, balancing pole can be followed flashboard and be moved up and down; Because flashboard 2 bottoms are set to V-arrangement blade-like structure, and the end in opposite directions of two seal rings 3 contacts with scarf, flashboard 2 bottoms are set to V-arrangement blade-like, be positioned at two seal ring scarf interface 11 places, the valve pocket 9 being positioned at herein offers eight shape grooves 12 with flashboard 2 symmetries, make flashboard 2 enter seal ring face and lifting while leaving seal ring face decline turn-offing gate valve, the cooperation of its structure can not produce leakage; Turn-off after gate valve, now can to being positioned at the seal ring in downstream, checking or directly take off replacing online, realized online replacing; Stamping Steel Ribbon 13 and be provided with cylinder rib 14 on Stamping Steel Ribbon 13, has effectively guaranteed, even if there is a little fluid to enter in eight shape grooves 12, also can not overflow, cylinder rib 14 has extended the antifriction time of Stamping Steel Ribbon 13, makes Stamping Steel Ribbon 13 longer service life.And for flashboard, after flashboard 2 promotes completely, two seal rings form the fluid passage of sealing, now only flashboard 2 and connecting rod and the spring clip of valve rod 5 need be removed, flashboard can be lifted down to the flashboard that detects or more renew, realize the on-line maintenance of flashboard or replacing.
Structure of the present invention not only makes to have substantially exceeded existing knife-shape gate valve the working life of gate valve, and well completed the difficult problem of on-line maintenance and replacing, further extended the working life of knife-shape gate valve, all brought great convenience to client's operation and maintenance.
Claims (6)
1. a long lifetime knife-shape gate valve, comprise valve body (1), flashboard (2), seal ring (3), described valve body (1) top is provided with driving mechanism, in the middle of bottom, be set to valve pocket (9), it is characterized in that: described driving mechanism comprises supporting frame (4), valve rod (5), driving component (6), balancing pole (7), valve rod (5) is arranged on supporting frame (4) middle part, its upper end connection for transmission part (6), lower end connects flashboard (2), the both sides that are positioned at flashboard (2) at supporting frame (4) are provided with sliding-groove (8), the two ends of balancing pole (7) are arranged in loose slot (8), roll and contact with flashboard (2), described flashboard (2) is arranged on valve body (1), by valve body (1) be divided into first half valve body and the later half valve body of symmetry, first half valve body and later half valve body place valve pocket (9) upper inside wall are set to staircase structural model, and bottom is set to platform structure, described seal ring (3) is elastic seal ring, be set to independently two cirque body, its outer peripheral surface forms sealing with valve pocket (9) the inwall interference fit of two halves valve body respectively, seal ring external ear (10) is positioned at valve body (1) outer wall, two seal rings that are positioned at valve pocket (9) top contact with scarf, flashboard (2) bottom is set to V-arrangement blade-like, be positioned at two seal ring scarf interfaces (11) and locate, the valve pocket (9) being positioned at herein offers eight shape grooves (12) with flashboard (2) symmetry, on the valve body on valve pocket top, be provided with Stamping Steel Ribbon (13), on Stamping Steel Ribbon (13), be provided with cylinder rib (14).
2. long lifetime knife-shape gate valve according to claim 1, is characterized in that: described Stamping Steel Ribbon (13) is symmetrical arranged two with flashboard (2), between itself and valve body (1), is also provided with adjusting bolt (15).
3. long lifetime knife-shape gate valve according to claim 1, is characterized in that: described flashboard (2) is realized and being flexibly connected by connecting rod and spring clip with valve rod (5).
4. long lifetime knife-shape gate valve according to claim 1, is characterized in that: described driving component (6) is for manually coiling or motor.
5. long lifetime knife-shape gate valve according to claim 1, is characterized in that: described Stamping Steel Ribbon (13) offers arc groove along the length direction of described flashboard, is provided with lubricating layer in arc groove, and cylinder rib (14) is arranged in arc groove.
6. long lifetime knife-shape gate valve according to claim 1, is characterized in that: described balancing pole (7) arranges two, is positioned at flashboard (2) both sides, and balancing pole (7) adopts metallic rod overcoat abrasive rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693550.1A CN103644315B (en) | 2013-12-04 | 2013-12-04 | A kind of long-life knife gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693550.1A CN103644315B (en) | 2013-12-04 | 2013-12-04 | A kind of long-life knife gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103644315A true CN103644315A (en) | 2014-03-19 |
| CN103644315B CN103644315B (en) | 2016-02-17 |
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ID=50249576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310693550.1A Active CN103644315B (en) | 2013-12-04 | 2013-12-04 | A kind of long-life knife gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103644315B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221775A (en) * | 2015-11-02 | 2016-01-06 | 苏州市淞舜五金有限公司 | A kind of fixing valve rod |
| CN105240555A (en) * | 2015-11-02 | 2016-01-13 | 苏州市淞舜五金有限公司 | Fixing lubricating valve rod |
| CN105240551A (en) * | 2015-11-02 | 2016-01-13 | 苏州市淞舜五金有限公司 | Fixed anti-collision valve rod |
| CN105240556A (en) * | 2015-11-02 | 2016-01-13 | 苏州市淞舜五金有限公司 | Fixed lubricating anti-collision valve rod |
| CN105387264A (en) * | 2015-11-02 | 2016-03-09 | 苏州市淞舜五金有限公司 | Fixed damping valve rod |
| CN108757970A (en) * | 2018-07-10 | 2018-11-06 | 川北真空科技(北京)有限公司 | A kind of small capacity double sealing plug-in board valve |
| CN109058493A (en) * | 2018-10-04 | 2018-12-21 | 盐城欧润石化设备制造有限公司 | A kind of anticorrosive valve of quick cutting fluid |
| CN109854769A (en) * | 2019-03-04 | 2019-06-07 | 新余飞虎管道技术设备有限责任公司 | Hydraulic external flashboard large bore valves |
| CN110594447A (en) * | 2019-08-26 | 2019-12-20 | 湖南诺亚农业科技发展有限公司 | Three-way valve and heat recovery system with same |
| US11300213B1 (en) | 2021-02-19 | 2022-04-12 | Emerson Automation Solutions Final Control US LP | Floating yoke connection |
| US11499644B2 (en) | 2020-08-25 | 2022-11-15 | Emerson Automation Solutions Final Control US LP | Sealing assembly for a knife gate valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030025098A1 (en) * | 2001-08-01 | 2003-02-06 | Young Steven P. | Gate valve with delayed retraction of counter plate |
| CN2806910Y (en) * | 2005-07-12 | 2006-08-16 | 龚伟安 | Gate vale with parallel double gate plates capable of generating initial seal force by inclined plane |
| CN201526690U (en) * | 2009-08-06 | 2010-07-14 | 苏州道森压力控制有限公司 | Lead screw gate valve with inlet and outlet pressure balance mechanism |
| CN102537392A (en) * | 2012-03-06 | 2012-07-04 | 苏州道森钻采设备股份有限公司 | Pilot operated gate valve |
-
2013
- 2013-12-04 CN CN201310693550.1A patent/CN103644315B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030025098A1 (en) * | 2001-08-01 | 2003-02-06 | Young Steven P. | Gate valve with delayed retraction of counter plate |
| CN2806910Y (en) * | 2005-07-12 | 2006-08-16 | 龚伟安 | Gate vale with parallel double gate plates capable of generating initial seal force by inclined plane |
| CN201526690U (en) * | 2009-08-06 | 2010-07-14 | 苏州道森压力控制有限公司 | Lead screw gate valve with inlet and outlet pressure balance mechanism |
| CN102537392A (en) * | 2012-03-06 | 2012-07-04 | 苏州道森钻采设备股份有限公司 | Pilot operated gate valve |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221775A (en) * | 2015-11-02 | 2016-01-06 | 苏州市淞舜五金有限公司 | A kind of fixing valve rod |
| CN105240555A (en) * | 2015-11-02 | 2016-01-13 | 苏州市淞舜五金有限公司 | Fixing lubricating valve rod |
| CN105240551A (en) * | 2015-11-02 | 2016-01-13 | 苏州市淞舜五金有限公司 | Fixed anti-collision valve rod |
| CN105240556A (en) * | 2015-11-02 | 2016-01-13 | 苏州市淞舜五金有限公司 | Fixed lubricating anti-collision valve rod |
| CN105387264A (en) * | 2015-11-02 | 2016-03-09 | 苏州市淞舜五金有限公司 | Fixed damping valve rod |
| CN108757970A (en) * | 2018-07-10 | 2018-11-06 | 川北真空科技(北京)有限公司 | A kind of small capacity double sealing plug-in board valve |
| CN109058493A (en) * | 2018-10-04 | 2018-12-21 | 盐城欧润石化设备制造有限公司 | A kind of anticorrosive valve of quick cutting fluid |
| CN109854769A (en) * | 2019-03-04 | 2019-06-07 | 新余飞虎管道技术设备有限责任公司 | Hydraulic external flashboard large bore valves |
| CN110594447A (en) * | 2019-08-26 | 2019-12-20 | 湖南诺亚农业科技发展有限公司 | Three-way valve and heat recovery system with same |
| US11499644B2 (en) | 2020-08-25 | 2022-11-15 | Emerson Automation Solutions Final Control US LP | Sealing assembly for a knife gate valve |
| US11300213B1 (en) | 2021-02-19 | 2022-04-12 | Emerson Automation Solutions Final Control US LP | Floating yoke connection |
| US11603938B2 (en) | 2021-02-19 | 2023-03-14 | Emerson Automation Solutions Final Control US LP | Floating yoke connection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103644315B (en) | 2016-02-17 |
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