CN103410997B - High pressure relief formula double disc parallel seat single-face hard sealing gate valve - Google Patents
High pressure relief formula double disc parallel seat single-face hard sealing gate valve Download PDFInfo
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- CN103410997B CN103410997B CN201310374900.8A CN201310374900A CN103410997B CN 103410997 B CN103410997 B CN 103410997B CN 201310374900 A CN201310374900 A CN 201310374900A CN 103410997 B CN103410997 B CN 103410997B
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Abstract
The present invention relates to double-flashboard gate valve, be specifically related to a kind of high pressure relief formula double disc parallel seat single-face hard sealing gate valve.It comprises valve body, valve seat, flashboard, flashboard frame, valve rod, valve gap and sealing mechanism, flashboard is contained in the middle of valve body, valve seat is installed between flashboard and valve body, valve rod lower end is connected to flashboard frame upper end, flashboard frame runs through and is connected on flashboard, valve gap is enclosed within outside valve rod, and valve gap and valve body connect, sealing mechanism is contained between valve rod and valve gap, described flashboard is divided into left flashboard and right flashboard, left flashboard inner side surface is axle construction, the axis of this axle construction and valve flowing channel axis being parallel, right flashboard inner side surface is to be enclosed within the axle sleeve structure on left flashboard axis, preloading spring is provided with between left flashboard and right flashboard, described left flashboard upper end has relief hole.
Description
Technical field
The present invention relates to double-flashboard gate valve, be specifically related to a kind of high pressure relief formula double disc parallel seat single-face hard sealing gate valve.
Background technique
Domestic and international traditional gate valve is all the single, double flashboard structure adopting band inclined-plane, and form the sealing pair on an inclined-plane with valve seat, the lower thrust by valve rod reaches the effect of forced seal.Parallel gate plate formula gate valve adopts double-flashboard structure usually, and it mainly comprises valve body, stretches into the valve rod in valve body, the left and right flashboard etc. be connected with valve rod.It blocks principle, and valve rod promotes left and right flashboard and enters in the runner of valve body, and the sealing surface that left flashboard promotes right flashboard under the effect of valve flowing channel side pressure medium presses to opposite side, realizes the selfsealings of runner.The design of tradition gate valve double disc parallel seat is two way sealed, below pressure 900Lb.There is shortcoming in it: needs the pressure of fluid higher during sealing, and pressure is lower cannot be promoted right flashboard and be close to sealing surface, and therefore during low pressure, sealing effect is poor.
Summary of the invention
In order to solve the problem, the present invention proposes a kind of high pressure relief formula double disc parallel seat single-face hard sealing gate valve, solve the technical problem of high pressure, unloading type, one-way sealing, double disc parallel seat, meeting applying working condition.
In order to reach foregoing invention object, the present invention proposes following technological scheme:
High pressure relief formula double disc parallel seat single-face hard sealing gate valve, it comprises valve body, valve seat, flashboard, flashboard frame, valve rod, valve gap and sealing mechanism, flashboard is contained in the middle of valve body, valve seat is installed between flashboard and valve body, valve rod lower end is connected to flashboard frame upper end, flashboard frame runs through and is connected on flashboard, valve gap is enclosed within outside valve rod, and valve gap and valve body connect, sealing mechanism is contained between valve rod and valve gap, described flashboard is divided into left flashboard and right flashboard, left flashboard inner side surface is axle construction, the axis of this axle construction and valve flowing channel axis being parallel, right flashboard inner side surface is to be enclosed within the axle sleeve structure on left flashboard axis, preloading spring is provided with between left flashboard and right flashboard, described left flashboard upper end has relief hole.
Between described valve gap and valve body, seal ring is housed, and together with valve gap and valve body to be fixedly connected with stud bolt by nut.
Described sealing mechanism comprises sealing, filler, gland and pressing plate, upper sealing is contained in valve gap lower end, between valve rod and valve gap, filler is contained in valve gap upper end, gland is contained in above filler, pressing plate is pressed in above gland, and pressing plate is fixedly connected on valve gap upper end by hexagon nut, swing bolt and straight pin, is connected with support above pressing plate.
The use pressure of described high pressure relief formula double disc parallel seat single-face hard sealing gate valve is no more than 1500Lb.
Advantage of the present invention is:
1) left flashboard inner side surface is axle construction, the axis of this axle construction and valve flowing channel axis being parallel, and right flashboard inner side surface is to be enclosed within the axle sleeve structure on left flashboard axis, is provided with preloading spring between left flashboard and right flashboard;
2) seal: former two way sealed is now one-way sealing, novel structure, maintenance of valve is convenient; The sealability of valve is more reliable, and the pressure medium of pipe-line system is higher, and its sealability is better, ensure that the normal operation of pipe-line system;
3) operational torque time valve opening is closed is little, is 65% of traditional same specification valve, mostly reduces energy consumption;
4) pressure increase: former below 900Lb is now 1500Lb.Friction between valve seal pair is little, substantially increases the working life of valve.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Embodiment
In order to the present invention is further described, introduce below in conjunction with Figure of description:
With reference to accompanying drawing 1, high pressure relief formula double disc parallel seat single-face hard sealing gate valve, it comprises valve body 1, valve seat 2, flashboard, flashboard frame 17, valve rod 4, valve gap 7 and sealing mechanism, flashboard is contained in the middle of valve body 1, valve seat 2 is installed between flashboard and valve body 1, valve rod 4 lower end is connected to flashboard frame 17 upper end, flashboard frame 17 runs through and is connected on flashboard, valve gap 7 is enclosed within outside valve rod 4, and valve gap 7 and valve body 1 connect, sealing mechanism is contained between valve rod 4 and valve gap 7, described flashboard is divided into left flashboard 3 and right flashboard 19, left flashboard 3 inner side surface is axle construction, the axis of this axle construction and valve flowing channel axis being parallel, right flashboard 19 inner side surface is to be enclosed within the axle sleeve structure on left flashboard 3 axle, preloading spring 18 is provided with between left flashboard 3 and right flashboard 19, described left flashboard 3 upper end has relief hole 20.
Between described valve gap 7 and valve body 1, seal ring 5 is housed, and together with valve gap 7 and valve body 1 to be fixedly connected with stud bolt 16 by nut 15.
Described sealing mechanism comprises sealing 6, filler 8, gland 10 and pressing plate 11, upper sealing 6 is contained in valve gap 7 lower end, between valve rod 4 and valve gap 7, filler 8 is contained in valve gap 7 upper end, gland 10 is contained in above filler 8, pressing plate 11 is pressed in above gland 10, and pressing plate 11 is fixedly connected on valve gap 7 upper end by hexagon nut 13, swing bolt 14 and straight pin 9, is connected with support 12 above pressing plate 11.
The use pressure of described high pressure relief formula double disc parallel seat single-face hard sealing gate valve is no more than 1500Lb.
Claims (1)
1. high pressure relief formula double disc parallel seat single-face hard sealing gate valve, it comprises valve body, valve seat, flashboard, flashboard frame, valve rod, valve gap and sealing mechanism, flashboard is contained in the middle of valve body, valve seat is installed between flashboard and valve body, valve rod lower end is connected to flashboard frame upper end, flashboard frame runs through and is connected on flashboard, it is characterized in that valve gap is enclosed within outside valve rod, and valve gap and valve body connect, sealing mechanism is contained between valve rod and valve gap, described flashboard is divided into left flashboard and right flashboard, left flashboard inner side surface is axle construction, the axis of this axle construction and valve flowing channel axis being parallel, right flashboard inner side surface is to be enclosed within the axle sleeve structure on left flashboard axis, preloading spring is provided with between left flashboard and right flashboard, described left flashboard upper end has relief hole, between described valve gap and valve body, seal ring is housed, and together with valve gap and valve body to be fixedly connected with stud bolt by nut, described sealing mechanism comprises sealing, filler, gland and pressing plate, upper sealing is contained in valve gap lower end, between valve rod and valve gap, filler is contained in valve gap upper end, gland is contained in above filler, pressing plate is pressed in above gland, and pressing plate is fixedly connected on valve gap upper end by hexagon nut, swing bolt and straight pin, is connected with support above pressing plate, the use pressure of described high pressure relief formula double disc parallel seat single-face hard sealing gate valve is no more than 1500Lb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310374900.8A CN103410997B (en) | 2013-08-26 | 2013-08-26 | High pressure relief formula double disc parallel seat single-face hard sealing gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310374900.8A CN103410997B (en) | 2013-08-26 | 2013-08-26 | High pressure relief formula double disc parallel seat single-face hard sealing gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103410997A CN103410997A (en) | 2013-11-27 |
| CN103410997B true CN103410997B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310374900.8A Active CN103410997B (en) | 2013-08-26 | 2013-08-26 | High pressure relief formula double disc parallel seat single-face hard sealing gate valve |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003673B (en) * | 2015-07-03 | 2019-05-10 | 南通国电电站阀门有限公司 | High-pressure process welds linking band and bypasses blowdown parallel gate valve |
| CN105090607B (en) * | 2015-07-13 | 2017-10-31 | 哈托利海托阀门（杭州）有限公司 | A kind of high leakproofness gate valve |
| CN107228204A (en) * | 2017-06-23 | 2017-10-03 | 南通国电电站阀门股份有限公司 | A kind of overcritical No leakage bellows forging parallel slide valve |
| CN110043676A (en) * | 2019-04-26 | 2019-07-23 | 江苏圣泰阀门有限公司 | A kind of pressure seal parallel slide valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4117577A1 (en) * | 1991-05-29 | 1992-12-03 | Sempell Babcock Ag | Knife gate valve |
| CN201526691U (en) * | 2009-06-23 | 2010-07-14 | 汪玉奎 | Self-relief gate valve |
| CN201787113U (en) * | 2010-09-29 | 2011-04-06 | 华夏阀门有限公司 | Combined type damper plate of unidirectional sealed parallel type double damper plate gate valve |
| CN201891860U (en) * | 2010-11-08 | 2011-07-06 | 南通国电电站阀门有限公司 | Single-face hard sealing parallel gate plate type gate valve |
| CN103148231A (en) * | 2013-03-20 | 2013-06-12 | 南通市电站阀门有限公司 | High-temperature high-pressure parallel double-gate valve gate pair and assembling method thereof |
| CN103148230A (en) * | 2013-03-15 | 2013-06-12 | 浙江中德自控阀门有限公司 | Automatic pressure release structure for double disk parallel gate valve |
-
2013
- 2013-08-26 CN CN201310374900.8A patent/CN103410997B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4117577A1 (en) * | 1991-05-29 | 1992-12-03 | Sempell Babcock Ag | Knife gate valve |
| CN201526691U (en) * | 2009-06-23 | 2010-07-14 | 汪玉奎 | Self-relief gate valve |
| CN201787113U (en) * | 2010-09-29 | 2011-04-06 | 华夏阀门有限公司 | Combined type damper plate of unidirectional sealed parallel type double damper plate gate valve |
| CN201891860U (en) * | 2010-11-08 | 2011-07-06 | 南通国电电站阀门有限公司 | Single-face hard sealing parallel gate plate type gate valve |
| CN103148230A (en) * | 2013-03-15 | 2013-06-12 | 浙江中德自控阀门有限公司 | Automatic pressure release structure for double disk parallel gate valve |
| CN103148231A (en) * | 2013-03-20 | 2013-06-12 | 南通市电站阀门有限公司 | High-temperature high-pressure parallel double-gate valve gate pair and assembling method thereof |
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| CN103410997A (en) | 2013-11-27 |
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Address after: 226557, Taoyuan West Road, Chengnan street, Rugao City, Jiangsu, Nantong province 1 Patentee after: Nantong State Electric Power Valve Co., Ltd. Address before: 226557, Taoyuan West Road, Taoyuan Town, Nantong City, Jiangsu, Rugao 1 Patentee before: Nantong State Electric Power Valve Co., Ltd. |
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