CN105065699A - Gate valve - Google Patents
Gate valve Download PDFInfo
- Publication number
- CN105065699A CN105065699A CN201510436769.2A CN201510436769A CN105065699A CN 105065699 A CN105065699 A CN 105065699A CN 201510436769 A CN201510436769 A CN 201510436769A CN 105065699 A CN105065699 A CN 105065699A
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- CN
- China
- Prior art keywords
- valve plate
- valve
- plate
- eyelet
- gate
- 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.)
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Classifications
-
- 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
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a gate valve with a good airtightness effect. Springs arranged between a traditional left valve plate and a traditional right valve plate are replaced by elastic metal rings, and therefore the defect that the left valve plate and the right valve plate get loose due to the fact that the springs lose efficacy after long-time use can be effectively overcome. Due to the facts that the elastic metal rings abut against the inner walls of accommodating cavities and open upwards, it is guaranteed that the elastic metal rings can exert pressure in the axis direction of a flow channel all the time, and the problem that airtightness is not enough due to abrasion of a valve seat or a sealing face is solved due to the fact that elastic force is exerted on the left valve plate and the right valve plate continuously. Moreover, a valve plate sleeve and a clamping sleeve are used for limiting and fixing the left valve plate and the right valve plate, the fixing mode is simple and reliable, and compared with a traditional gate valve, the airtightness is good, and the service life is long.
Description
Technical field
The present invention relates to valve technology field, particularly a kind of gate valve.
Background technique
Gate valve is an of paramount importance class valve at present, and it is widely used in circulation and the cut-off of the media such as liquid, gas, dust.Usually, gate valve comprises valve body, and valve body lower portion has material feeding mouth and discharge port, and the right-hand member of the left end of material feeding mouth and discharge port all has sealing surface, and being provided with that between two sealing surfaces, motive sealing coordinates can move up and down and the valve plate that can not rotate.Meanwhile, this valve plate top is connected with valve rod, and this valve rod top is connected with handle by screw-nut body.After rotatable handle, moved up and down by this screw-nut body band ovable valve stem, this valve plate moves up and down and two sealing inclined-planes is formed to sealing or open then, the final through or cut-off forming material feeding mouth and discharge port.
Because gate valve is used on steam line, owing to being worst hot case, easily causing part deformation between each part of valve seal mechanism, cause valve seal to lose efficacy, or make because of high-temperature expansion flap choke not open.Along with the development of gate valve technology, in order to keep better sealing, two sealing surfaces are all prepared as inclined-plane by the producer.Corresponding, valve plate be prepared as small end under wedge shape, thus improve the sealing effect of gate valve largely.But, even if after adopting aforesaid improvement, gate valve also also exists following defect: namely valve plate there will be wearing and tearing after using for a long time, thus the inclination on valve plate and/or sealing inclined-plane changes, then sealing effect is had a greatly reduced quality, also double valve plates gate valve has been there is in prior art, conflicted by spring between two valve plates, realize the sealing between valve plate and valve seat, but the elastic force of spring can passing in time and eliminating gradually, and the sealing between valve plate and valve seat can be caused equally to occur unstable situation.
Summary of the invention
For the deficiency that prior art exists, main purpose of the present invention is to provide a kind of good airproof performance and the double valve plates wedge action valve of long service life.
For achieving the above object, the invention provides following technological scheme, a kind of gate valve, comprise valve body, valve gap, valve seat and valve board assembly, described valve gap is arranged on body top by bolt, described valve body top is provided with upper chamber, described valve body lower portion is provided with the runner for fluid circulation, described valve seat is arranged in runner, described valve seat is provided with the valve plate groove matched with described valve board assembly, described valve board assembly is arranged in valve plate groove, valve rod penetrates upper chamber from valve gap, described valve rod and valve gap utilize sealing configuration to seal, described valve rod lower end is connected with valve rod assembly top, described valve board assembly comprises left valve plate, right valve plate, valve plate cover, retaining ring, clamping cover and the eyelet with opening, the opening upwards of described eyelet, described left valve plate and right valve plate are symmetrical arranged and are wedge shape, the opposing side of described left valve plate and right valve plate offers holding cavity, described eyelet to be arranged in holding cavity and with the inwall of holding cavity to establishing, step is provided with inside the upper end of described left valve plate and right valve plate, the lower end of described valve plate cover is provided with the inside groove matched with described step, the lower end of described left valve plate and right valve plate is respectively arranged with projection, described clamping puts the groove being provided with and matching with described projection, described projection is all connected in clamping cover, the upper end of described left valve plate and right valve plate is fixed by retaining ring cuff.
Preferably, be also provided with fixing rod between described left valve plate and right valve plate, the middle part that upper end and the valve plate of described fixing rod overlap is connected, and described fixing rod stretches into from the opening of eyelet and is fed through eyelet.
Preferably, the upper end of described fixing rod is provided with outside thread, and described valve plate puts and is provided with tapped hole, and described fixing rod is connected with described valve plate thread die cutting.
Preferably, the quantity of described holding cavity and eyelet is two.
Preferably, described left valve plate and right valve plate are set to inclined-plane with the contacting point of valve seat upper end, described inclined-plane is provided with soft seal.
Preferably, described valve gap is provided with the filler with valve stem contacts, the upper end of described filler is respectively arranged with filler pressing sleeve and hold-down grid.
Preferably, the lower end inside of described left valve plate and right valve plate is provided with depressed part, is provided with two ends and is connected to linking springs on left valve plate and right valve plate in described depressed part.
The present invention has the following advantages relative to prior art tool, by the spring arranged between traditional left valve plate and right valve plate is replaced to eyelet, effectively can overcome spring and to lose efficacy after a protracted use the phenomenon causing getting loose between left valve plate and right valve plate.Eyelet is because with the inwall of holding cavity to establishing and the opening upwards of eyelet, such setting just can ensure that eyelet can apply pressure along the axial direction of runner always, so left valve plate and right valve plate can be subject to elastic force endlessly to overcome valve seat or sealing surface wear and the problem of the sealing deficiency caused, and utilize valve plate cover and clamping cover to be undertaken spacing and fixing by left valve plate and right valve plate, means of fixation is fairly simple and reliable.
Accompanying drawing explanation
Fig. 1 is the sectional view of gate valve of the present invention;
Fig. 2 is A portion enlarged diagram in Fig. 1.
In figure: 1, valve body; 2, valve gap; 3, valve rod; 4, valve seat; 5, runner; 6, upper chamber; 7, left valve plate; 8, right valve plate; 9, valve plate cover; 10, retaining ring; 11, clamping cover; 12, eyelet; 13, holding cavity; 14, step; 15, inside groove; 16, protruding; 17, groove; 18, fixing rod; 19, soft seal; 20, depressed part; 21, linking springs.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As described in Figure 1, a kind of gate valve, comprise valve body 1, valve gap 2, valve seat 4 and valve board assembly, valve gap 2 is arranged on valve body 1 top by bolt, valve body 1 top is provided with upper chamber, valve body 1 bottom is provided with the runner 5 for fluid circulation, valve seat 4 is arranged in runner 5, valve seat 4 is provided with the valve plate groove matched with valve board assembly, valve board assembly is arranged in valve plate groove, valve rod 3 penetrates upper chamber 6 from valve gap 2, valve rod 3 and valve gap 2 utilize sealing configuration to seal, valve rod 3 lower end is connected with valve rod 3 assembly top, wherein valve board assembly comprises left valve plate 7, right valve plate 8, valve plate cover 9, retaining ring 10, clamping cover 11 and the eyelet 12 with opening, in wedge shape after left valve plate 7 and right valve plate 8 are symmetrical arranged.The opposing side of left valve plate 7 and right valve plate 8 offers holding cavity 13, eyelet 12 to be arranged in holding cavity 13 and with the inwall of holding cavity 13 to establishing, step 14 is provided with inside the upper end of left valve plate 7 and right valve plate 8, the lower end of valve plate cover 9 is provided with the inside groove 15 matched with described step 14, left valve plate 7 and right valve plate 8 are fixed by inside groove 15 by valve plate cover 9, in addition, the lower end of left valve plate 7 and right valve plate 8 is respectively arranged with protruding 16, protruding 16 in barb-like, clamping cover 11 is provided with and described protruding 16 grooves matched 17, protruding 16 are all connected in clamping cover 11, the upper end of left valve plate 7 and right valve plate 8 is fixed by retaining ring 10 cuff.The upper end of left valve plate 7 and right valve plate 8 and lower end are fixed by valve plate cover 9 and clamping cover 11 respectively respectively, can make can not produce large displacement or dislocation between left valve plate 7 and right valve plate 8.
Gate valve of the present invention, by the spring arranged between traditional left valve plate 7 and right valve plate 8 is replaced to eyelet 12, effectively can overcome spring and to lose efficacy after a protracted use the phenomenon causing getting loose between left valve plate 7 and right valve plate 8.Eyelet 12 is because with the inwall of holding cavity 13 to establishing and the opening upwards of eyelet 12, such setting just can ensure that eyelet 12 can apply pressure along the axial direction of runner 5 always, so left valve plate 7 and right valve plate 8 can be subject to elastic force endlessly to overcome valve seat 4 or sealing surface wear and the problem of the sealing deficiency caused, and utilize valve plate cover 9 and clamping cover 11 to be undertaken spacing and fixing by left valve plate 7 and right valve plate 8, means of fixation is fairly simple and reliable.Good and the long service life of the relatively traditional Gate-valve sealing performance of gate valve of the present invention.
In order to ensure that eyelet 12 is identical with the elastic force of right valve plate 8 to left valve plate 7, the present embodiment is also provided with fixing rod between left valve plate 7 and right valve plate 8, the middle part that upper end and the valve plate of fixing rod overlap 9 is connected, fixing rod stretches into from the opening of eyelet 12 and is fed through eyelet 12, be arranged so that eyelet 12 so all the time between left valve plate 7 and right valve plate 8, the stressed deficiency of sealing surface will two valve plates be caused to occur dislocation because of the some directions of deflection, because probably will cause revealing.
The upper end of fixing rod 18 is provided with outside thread, valve plate cover 9 is provided with tapped hole, and fixing rod 18 and described valve plate overlap 9 and are threaded, and fixing rod 18 and valve plate are overlapped 9 and is threaded, such convenience to the manufacturing of part, and assemble and maintenance time also can be very convenient.
In order to ensure that left valve plate 7 and right valve plate 8 can be subject to enough elastic forces to overcome the problem of sealing deficiency, in the present embodiment, the quantity of holding cavity 13 and eyelet 12 is two.With reference to Fig. 1, the elastic force of two eyelets 12 can be good at the wear extent making up valve seat 4.
Left valve plate 7 and right valve plate 8 are set to inclined-plane with the contacting point of valve seat 4 upper end, inclined-plane are provided with soft seal 19.Soft seal 19 can make left valve plate 7 and the better tightness between right valve plate 8 and valve seat 4, and soft seal 19 has good elasticity, here soft seal 19 can be made for quality of rubber materials, being convenient to very much make when being closed by gate valve the position between left valve plate 7 and right valve plate 8 to make fine setting, can not making because of hard contact left valve plate 7 and right valve plate 8 that stuck phenomenon occurs.
Valve gap 2 is provided with the filler contacted with valve rod 3, the upper end of filler is respectively arranged with filler pressing sleeve and hold-down grid, the setting of filler, in the process that the cooperatively interacting of filler pressing sleeve and hold-down grid can make to move up and down at valve rod 3, sealing between filler and valve rod 3 is become better and better, and ensure that the sealing of gate valve.
In addition, the lower end inside of left valve plate 7 and right valve plate 8 is provided with depressed part 20, be provided with two ends in depressed part 20 and be connected to linking springs 21 on left valve plate 7 and right valve plate 8, linking springs 21 mainly plays the effect connecting and insure here, linking springs 21 is in the state of being stretched, and is the excessive and situation that closing gate valve that is that cause the distance between left valve plate 7 and right valve plate 8 to be brought slightly greatly can be required great effort very much of elastic force in order to balance eyelet 12.
The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technological schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a gate valve, comprise valve body, valve gap, valve seat and valve board assembly, described valve gap is arranged on body top by bolt, described valve body top is provided with upper chamber, described valve body lower portion is provided with the runner for fluid circulation, described valve seat is arranged in runner, described valve seat is provided with the valve plate groove matched with described valve board assembly, described valve board assembly is arranged in valve plate groove, valve rod penetrates upper chamber from valve gap, described valve rod and valve gap utilize sealing configuration to seal, described valve rod lower end is connected with valve rod assembly top, it is characterized in that: described valve board assembly comprises left valve plate, right valve plate, valve plate cover, retaining ring, clamping cover and the eyelet with opening, described left valve plate and right valve plate are symmetrical arranged and are wedge shape, the opposing side of described left valve plate and right valve plate offers holding cavity, described eyelet to be arranged in holding cavity and with the inwall of holding cavity to establishing, the opening upwards of described eyelet, step is provided with inside the upper end of described left valve plate and right valve plate, the lower end of described valve plate cover is provided with the inside groove matched with described step, the lower end of described left valve plate and right valve plate is respectively arranged with projection, described clamping puts the groove being provided with and matching with described projection, described projection is all connected in clamping cover, the upper end of described left valve plate and right valve plate is fixed by retaining ring cuff.
2. a kind of gate valve according to claim 1, it is characterized in that: between described left valve plate and right valve plate, be also provided with fixing rod, the middle part that upper end and the valve plate of described fixing rod overlap is connected, and described fixing rod stretches into from the opening of eyelet and is fed through eyelet.
3. a kind of gate valve according to claim 2, it is characterized in that: the upper end of described fixing rod is provided with outside thread, described valve plate puts and is provided with tapped hole, and described fixing rod is connected with described valve plate thread die cutting.
4. a kind of gate valve according to claim 3, is characterized in that: the quantity of described holding cavity and eyelet is two.
5. a kind of gate valve according to claim 4, is characterized in that: described left valve plate and right valve plate are set to inclined-plane with the contacting point of valve seat upper end, described inclined-plane is provided with soft seal.
6. a kind of gate valve according to claim 5, is characterized in that: described valve gap is provided with the filler with valve stem contacts, and the upper end of described filler is respectively arranged with filler pressing sleeve and hold-down grid.
7. a kind of gate valve according to claim 1, is characterized in that: the lower end inside of described left valve plate and right valve plate is provided with depressed part, is provided with two ends and is connected to linking springs on left valve plate and right valve plate in described depressed part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510436769.2A CN105065699B (en) | 2015-07-23 | 2015-07-23 | Gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510436769.2A CN105065699B (en) | 2015-07-23 | 2015-07-23 | Gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105065699A true CN105065699A (en) | 2015-11-18 |
| CN105065699B CN105065699B (en) | 2017-11-14 |
Family
ID=54495149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510436769.2A Active CN105065699B (en) | 2015-07-23 | 2015-07-23 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105065699B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027285A (en) * | 2018-08-29 | 2018-12-18 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of gate valve with flexible disc |
| CN111022678A (en) * | 2019-12-30 | 2020-04-17 | 荆门美中美阀门有限公司 | Gate valve structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7708785A (en) * | 1976-08-17 | 1978-02-21 | Rockwell International Corp | DISC VALVE. |
| UA62875A (en) * | 2003-07-04 | 2003-12-15 | Slider with wedge-parallel gate and safety pallet | |
| CN201262242Y (en) * | 2008-09-12 | 2009-06-24 | 江苏盐电阀门有限公司 | Wedge-type sluice valve with self-compensation function |
| CN201810799U (en) * | 2010-09-28 | 2011-04-27 | 华夏阀门有限公司 | Bidirectional sealed parallel type combined gate plate with double gate plate gate valve |
| CN202302027U (en) * | 2011-11-04 | 2012-07-04 | 赵雷 | Gate valve of high-temperature and high-pressure parallel plates |
| CN204213377U (en) * | 2014-10-11 | 2015-03-18 | 上海弘盛特种阀门制造有限公司 | The split type flashboard of wedge shape of gate valve |
| CN204284499U (en) * | 2014-11-19 | 2015-04-22 | 南通市电站阀门有限公司 | A kind of High Temperature High Pressure double-flashboard Wedge gate valve |
| CN204852410U (en) * | 2015-07-23 | 2015-12-09 | 氟络塞尔特种阀门(苏州)有限公司 | Sluice valve |
-
2015
- 2015-07-23 CN CN201510436769.2A patent/CN105065699B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7708785A (en) * | 1976-08-17 | 1978-02-21 | Rockwell International Corp | DISC VALVE. |
| UA62875A (en) * | 2003-07-04 | 2003-12-15 | Slider with wedge-parallel gate and safety pallet | |
| CN201262242Y (en) * | 2008-09-12 | 2009-06-24 | 江苏盐电阀门有限公司 | Wedge-type sluice valve with self-compensation function |
| CN201810799U (en) * | 2010-09-28 | 2011-04-27 | 华夏阀门有限公司 | Bidirectional sealed parallel type combined gate plate with double gate plate gate valve |
| CN202302027U (en) * | 2011-11-04 | 2012-07-04 | 赵雷 | Gate valve of high-temperature and high-pressure parallel plates |
| CN204213377U (en) * | 2014-10-11 | 2015-03-18 | 上海弘盛特种阀门制造有限公司 | The split type flashboard of wedge shape of gate valve |
| CN204284499U (en) * | 2014-11-19 | 2015-04-22 | 南通市电站阀门有限公司 | A kind of High Temperature High Pressure double-flashboard Wedge gate valve |
| CN204852410U (en) * | 2015-07-23 | 2015-12-09 | 氟络塞尔特种阀门(苏州)有限公司 | Sluice valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027285A (en) * | 2018-08-29 | 2018-12-18 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of gate valve with flexible disc |
| CN111022678A (en) * | 2019-12-30 | 2020-04-17 | 荆门美中美阀门有限公司 | Gate valve structure |
| CN111022678B (en) * | 2019-12-30 | 2024-04-26 | 荆门美中美阀门有限公司 | Gate valve structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105065699B (en) | 2017-11-14 |
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