CN103410997A - High-pressure-relief type parallel-double-gate single side hard sealing gate valve - Google Patents
High-pressure-relief type parallel-double-gate single side hard sealing gate valve Download PDFInfo
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- CN103410997A CN103410997A CN2013103749008A CN201310374900A CN103410997A CN 103410997 A CN103410997 A CN 103410997A CN 2013103749008 A CN2013103749008 A CN 2013103749008A CN 201310374900 A CN201310374900 A CN 201310374900A CN 103410997 A CN103410997 A CN 103410997A
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Abstract
The invention relates to a double-gate type gate valve and particularly relates to a high-pressure-relief type parallel-double-gate single side hard sealing gate valve. The gate valve comprises a valve body, a valve base, gates, a gate frame, a valve rod, a bonnet and a sealing mechanism, wherein the gates are installed in the middle of the valve body, the valve base is fixedly installed between the gates and the valve body, the lower end of the valve rod is connected with the upper end of the gate frame, the gate frame is connected with the gates in a penetrating mode, the bonnet is sleeved outside the valve rod and is connected with the valve body, the sealing mechanism is installed between the valve rod and the bonnet, the gates are divided into the left gate and the right gate, an inner side face of the left gate is in a shaft structure, an axis of the shaft structure is parallel with an axis of a flow channel of the valve body, an inner side face of the right gate is in a shaft sleeve structure which can be sleeved on the shaft of the left gate, and a pre-tightening spring is arranged between the left gate and the right gate; a pressure relief hole is formed in the upper end of the left gate.
Description
Technical field
The present invention relates to double-flashboard gate valve, be specifically related to a kind of high pressure unloading type 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 adopted with inclined-plane, with the sealing pair on an inclined-plane of valve seat composition, by the lower thrust of valve rod, reaches the effect of forced seal.Parallel gate plate formula gate valve adopts the double-flashboard structure usually, and it mainly comprises valve body, stretches into the valve rod in valve body, the left and right flashboard be connected with valve rod etc.It blocks principle, and valve rod promotes left and right flashboard and enters in the runner of valve body, and left flashboard promotes right flashboard under the effect of valve flowing channel one side pressure medium sealing surface 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.Its existent defect is: during sealing, need the pressure of fluid higher, pressure is low can't be promoted right flashboard and be close to sealing surface, so sealing effect is poor during low pressure.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of high pressure unloading type 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, meet applying working condition.
In order to reach the foregoing invention purpose, the present invention proposes following technological scheme:
High pressure unloading type double disc parallel seat single-face hard sealing gate valve, it comprises valve body, valve seat, flashboard, the 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, the valve rod lower end is connected to flashboard frame upper end, the flashboard frame runs through and is connected on flashboard, valve gap is enclosed within the valve rod outside, 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 is parallel with the valve flowing channel axis, right flashboard inner side surface is for can be enclosed within the axle sleeve structure on left flashboard axis, between left flashboard and right flashboard, be provided with preloading spring, described left flashboard upper end has relief hole.
Between described valve gap and valve body, seal ring is housed, and valve gap and valve body by nut with together with stud bolt is fixedly connected with.
Described sealing mechanism comprises sealing, filler, gland and pressing plate, upper sealing is contained in the valve gap lower end, between valve rod and valve gap, filler is contained in the valve gap upper end, gland is contained in above filler, pressing plate is pressed in gland top, and pressing plate is fixedly connected on the valve gap upper end by hexagon nut, swing bolt and straight pin, and the pressing plate top is connected with support.
The working pressure of described high pressure unloading type 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, and the axis of this axle construction is parallel with the valve flowing channel axis, and right flashboard inner side surface, for can be enclosed within the axle sleeve structure on left flashboard axis, is provided with preloading spring between left flashboard and right flashboard;
2) sealing: former two way sealed is now one-way sealing, novel structure, and 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, has guaranteed the normal operation of pipe-line system;
Operational torque when 3) valve opening is closed is little, is 65% of traditional same specification valve, has mostly reduced energy consumption;
4) pressure increases: below former 900Lb, be now 1500Lb.Friction between the valve seal pair is little, has greatly improved the working life of valve.
The accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Embodiment
For the present invention is further described, introduce below in conjunction with Figure of description:
With reference to accompanying drawing 1, high pressure unloading type 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 ends are connected to flashboard frame 17 upper ends, flashboard frame 17 runs through and is connected on flashboard, valve gap 7 is enclosed within valve rod 4 outsides, and valve gap 7 connects with valve body 1, 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 surfaces are axle construction, the axis of this axle construction is parallel with the valve flowing channel axis, right flashboard 19 inner side surfaces are for can be enclosed within the axle sleeve structure on left flashboard 3 axles, between left flashboard 3 and right flashboard 19, be provided with preloading spring 18, described left flashboard 3 upper ends have relief hole 20.
Between described valve gap 7 and valve body 1, seal ring 5 is housed, and valve gap 7 and valve body 1 by nut 15 with together with stud bolt 16 is fixedly connected with.
Described sealing mechanism comprises sealing 6, filler 8, gland 10 and pressing plate 11, upper sealing 6 is contained in valve gap 7 lower ends, between valve rod 4 and valve gap 7, filler 8 is contained in valve gap 7 upper ends, gland 10 is contained in above filler 8, pressing plate 11 is pressed in gland 10 tops, and pressing plate 11 is fixedly connected on valve gap 7 upper ends by hexagon nut 13, swing bolt 14 and straight pin 9, and pressing plate 11 tops are connected with support 12.
The working pressure of described high pressure unloading type double disc parallel seat single-face hard sealing gate valve is no more than 1500Lb.
Claims (4)
1. high pressure unloading type double disc parallel seat single-face hard sealing gate valve, it comprises valve body, valve seat, flashboard, the 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, the valve rod lower end is connected to flashboard frame upper end, the flashboard frame runs through and is connected on flashboard, valve gap is enclosed within the valve rod outside, and valve gap and valve body connect, sealing mechanism is contained between valve rod and valve gap, it is characterized in that described flashboard is divided into left flashboard and right flashboard, left flashboard inner side surface is axle construction, the axis of this axle construction is parallel with the valve flowing channel axis, right flashboard inner side surface is for can be enclosed within the axle sleeve structure on left flashboard axis, between left flashboard and right flashboard, be provided with preloading spring, described left flashboard upper end has relief hole.
2. high pressure unloading type double disc parallel seat single-face hard sealing gate valve according to claim 1, is characterized in that, between described valve gap and valve body, seal ring is housed, and valve gap and valve body by nut with together with stud bolt is fixedly connected with.
3. high pressure unloading type double disc parallel seat single-face hard sealing gate valve according to claim 1, it is characterized in that described sealing mechanism comprises sealing, filler, gland and pressing plate, upper sealing is contained in the valve gap lower end, between valve rod and valve gap, filler is contained in the valve gap upper end, and gland is contained in above filler, and pressing plate is pressed in the gland top, and pressing plate is fixedly connected on the valve gap upper end by hexagon nut, swing bolt and straight pin, the pressing plate top is connected with support.
4. high pressure unloading type double disc parallel seat single-face hard sealing gate valve according to claim 1, is characterized in that the working pressure of described high pressure unloading type 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)
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|---|---|
| CN103410997A true CN103410997A (en) | 2013-11-27 |
| CN103410997B 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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003673A (en) * | 2015-07-03 | 2015-10-28 | 南通国电电站阀门有限公司 | High-pressure-method welding connection type drain parallel gate valve with bypass |
| CN105090607A (en) * | 2015-07-13 | 2015-11-25 | 哈托利海托阀门（杭州）有限公司 | High-sealing-performance 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003673A (en) * | 2015-07-03 | 2015-10-28 | 南通国电电站阀门有限公司 | High-pressure-method welding connection type drain parallel gate valve with bypass |
| 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 |
| CN105090607A (en) * | 2015-07-13 | 2015-11-25 | 哈托利海托阀门（杭州）有限公司 | High-sealing-performance 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103410997B (en) | 2015-08-19 |
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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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