CN203477376U - Gate valve - Google Patents
Gate valve Download PDFInfo
- Publication number
- CN203477376U CN203477376U CN201320546487.4U CN201320546487U CN203477376U CN 203477376 U CN203477376 U CN 203477376U CN 201320546487 U CN201320546487 U CN 201320546487U CN 203477376 U CN203477376 U CN 203477376U
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- Prior art keywords
- valve
- flashboard
- gate
- gap
- gate valve
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- Expired - Fee Related
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Abstract
The utility model relates to a gate valve, mainly solving the problem of poor sealing performance of a bonnet and gates of the existing gate valve. The gate valve comprises a first gate fixed in a valve body and a second gate which is in slide fit with the first gate. The other end, opposite to a hand wheel, of a valve stem, is fixedly connected with the second gate. The first gate is provided with a first cavity which is arranged between a water inlet passage and the second gate, and the first cavity is matched with the water inlet passage in terms of shape. A second cavity which is matched with a water outlet passage in terms of shape is arranged at the lower end of the second gate. Both the water inlet passage and the water outlet passage are provided with seal parts that are in butting joint with the gates. The sealing performance between the bonnet and the gates is good, medium leakage and resource waste are reduced, product reliability is improved, and service life of the gate valve is prolonged.
Description
Technical field
The utility model relates to a kind of valve, is specifically related to a kind of gate valve.
Background technique
Gate valve is a kind of of valve, and the open-shut device of gate valve is flashboard, and moving direction and the flow direction of flashboard are perpendicular, and gate valve can only be made standard-sized sheet and complete shut-down, can not make adjustments and throttling.Flashboard has two sealing surfaces, and two sealing surfaces of the most frequently used pattern gate valve form wedge shape, utilizes sphenoid surface sealing, poor sealing performance, medium can enter in valve gap, is prone to leakage, cause after valve the pressure medium of low-pressure cavity unstable, cause the leakage between valve rod and stuffing box also can increase.Under long-term work, the miscellaneous part in valve gap can be subject to the impact of medium, causes damage, cisco unity malfunction.So improve the sealing between valve inner valve stem and flashboard, reduce the leakage of medium in valve, the parts in Protective valve are not impaired, and maintaining valve internal pressure is stable very important.
Model utility content
In order to overcome the deficiency of background technique, the utility model provides a kind of gate valve, has mainly solved the problem of valve gap and the flashboard poor sealing performance of existing gate valve, the good seal performance of this gate valve, opening under the state of valve, flashboard can be drunk valve gap inwall and form sealing, and medium can not flow in valve gap, has reduced the leakage of medium, also guaranteed the mass dryness fraction in valve gap, make the miscellaneous part in valve gap can not be subject to the impact of medium, cause damage, guaranteed the normal operation efficiency of valve.
The technological scheme that the utility model adopts is: a kind of gate valve, comprise valve body, valve gap, valve rod, intake tunnel, exhalant canal, handwheel and flashboard, described valve gap is fixed on valve body, one end of described valve rod is connected with handwheel, described flashboard comprises the first flashboard being fixed in valve body and the second flashboard being slidably matched with the first flashboard, the other end of the relative handwheel of described valve rod is fixedly connected with the second flashboard, described the first flashboard is provided with the first valve pocket, described the first valve pocket is located between intake tunnel and the second flashboard, described the first valve pocket and intake tunnel shape are suitable, the lower end of described the second flashboard is provided with second valve pocket suitable with exhalant canal shape, described intake tunnel with on exhalant canal, be equipped with the Sealing of conflicting and to be connected with flashboard.
By taking technique scheme, under the state of valve opening, medium in passage flows to flashboard place by intake tunnel, by the first valve pocket, handwheel on rotation valve rod, with moving upward of ovable valve stem, because joint is fixedly connected with the second flashboard on valve rod, described valve rod drives the second flashboard to move upward, until the second valve pocket and the first valve pocket flush, form passage, medium just can circulate, flashboard on gate valve was all arranged to wedge shape in the past, in logical valve, medium can enter in valve gap, long-term work, in valve, humidity is too heavy, the damage of miscellaneous part in valve gap, also can drive a small amount of moisture to enter in valve rod and stuffing box, cause the leakage of the medium phenomenon such as also can cause that valve rod gets rusty, first flashboard is set as to plane, in logical valve, plane meeting and the valve gap inwall of flashboard fits tightly, produce sealing force, medium just can not enter in valve gap, guaranteed the mass dryness fraction in valve gap, make the parts in valve can not be subject to medium influence, cause damage, reduce the leakage of medium, such design has guaranteed the normal working efficiency of valve, strengthened the sealing of valve, reduced the leakage of medium in valve.
The utility model is further set to: the upper end of described the first flashboard is provided with fixing part, and described fixing part is set on valve rod and with valve gap and conflicts and be connected.
By taking technique scheme, described fixing part props up and is connected with valve gap, further guarantees that medium can not enter in valve rod and stuffing box, has reduced the leakage between stuffing box and valve rod, further strengthen the sealing in valve, greatly reduced leaking outside of valve.
The utility model is further set to: described Sealing is elastomer seal.
By taking technique scheme, the setting of described elastomer seal, can make the better tightness between valve body and flashboard, and when valve body is subject to flashboard extruding, can also to the stretch compensation of elastomer seal, make the sealing completely of valve body and flashboard, the surface of flashboard can be worn, guarantee the normal working efficiency of valve.
The utility model is further set to: on described valve gap, be coated with stellite.
By taking technique scheme; described stellite is the cemented carbide of a kind of ability all kinds abrasion and corrosion and high temperature oxidation; on valve gap, plate stellite and can well protect valve gap; the in the situation that of long-term work; can not be subject to the impact of external substance, cause damage, such design; extend the working life of valve gap, also guaranteed the normal working efficiency of valve.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 another structural representation of the present utility model.
1-valve body in figure, 2-valve gap, 3-valve rod, 4-intake tunnel, 5-exhalant canal, 6-flashboard, 60-the first flashboard, 61-the second flashboard, 62-fixing part, 63-first valve pocket 64-the second valve pocket, 7-handwheel, 8-Sealing, 9-stuffing box.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further.
As Fig. 1, a kind of gate valve shown in Fig. 2, draw together valve body 1, valve gap 2, valve rod 3, intake tunnel 4, exhalant canal 5, handwheel 7 and flashboard 6, described valve gap 2 is fixed on valve body 1, one end of described valve rod 3 is connected with handwheel 7, described flashboard 6 comprises the first flashboard 60 being fixed in valve body 1 and the second flashboard 61 being slidably matched with the first flashboard 60, the other end of described valve rod 3 relative handwheels 7 is fixedly connected with the second flashboard 61, described the first flashboard 60 is provided with the first valve pocket 63, described the first valve pocket 63 is located between intake tunnel 4 and the second flashboard 61, described the first valve pocket 63 is suitable with intake tunnel 4 shapes, the lower end of described the second flashboard 61 is provided with second valve pocket 63 suitable with exhalant canal 5 shapes, the intake tunnel 4 of stating and Aquaporin-5 are equipped with the Sealing 8 with flashboard 6 butts.Under the state that door is opened, medium in passage flows to flashboard 6 places by intake tunnel 4, by the first valve pocket 63, handwheel 6 on rotation valve rod 3, with moving upward of ovable valve stem 3, because on valve rod 3 joint 30 with the second flashboard 61 for being fixedly connected with, described valve rod 3 drives the second flashboard 61 to move upward, until the second valve pocket 64 and the first valve pocket 63 flush, form passage, medium just can circulate, flashboard on gate valve 6 was all arranged to wedge shape in the past, in logical valve, medium can enter in valve gap 2, long-term work, in valve, humidity is too heavy, the damage of valve gap 2 interior miscellaneous parts, also can drive a small amount of moisture to enter in valve rod 3 and stuffing box 9, cause the leakage of medium also can cause the phenomenons such as valve rod 3 gets rusty, first flashboard 6 is set as to plane, in logical valve, plane meeting and valve gap 2 inwalls of flashboard 6 fit tightly, produce sealing force, medium just can not enter in valve gap 2, guaranteed the mass dryness fraction in valve gap 2, make the parts in valve can not be subject to medium influence, cause damage, reduce the leakage of medium, such design has guaranteed the working efficiency that valve is normal, strengthened valve seal, reduced the leakage of medium in valve.
The upper end of described the first flashboard 60 is provided with fixing part 62, and described fixing part 62 is set on valve rod 3 and with valve gap 2 and conflicts and be connected.Described fixing part 62 props up and is connected with valve gap 2, further guarantees that medium can not enter in valve rod 2 and stuffing box, has reduced the leakage between stuffing box 9 and valve rod 2, has further strengthened the sealing in valve, has greatly reduced leaking outside of valve, economizes on resources.
Described Sealing 8 is elastomer seal 8.The setting of described elastomer seal 8, can make the better tightness between valve body 1 and flashboard 6, and when valve body 1 is subject to flashboard 6 extruding, can also to the stretch compensation of elastomer seal 8, make the sealing completely of valve body 1 and flashboard 6, the surface of flashboard 6 can be worn, guarantee the normal working efficiency of valve.
Described valve gap 2 is coated with stellite.Described stellite is the cemented carbide of a kind of ability all kinds abrasion and corrosion and high temperature oxidation; in the situation that valve gap 2 plates stellite and can well protect valve gap 2 in long-term work; can not be subject to the impact of external substance; cause damage; such design; extend 2 working lifes of valve gap, also guaranteed the normal working efficiency of valve.
Every technician's notice: although the utility model describes according to above-mentioned embodiment; but invention thought of the present utility model is not limited in this model utility; the repacking of any utilization inventive concept, all will include in this patent scope of patent protection.
Claims (4)
1. a gate valve, comprise valve body, valve gap, valve rod, intake tunnel, exhalant canal, handwheel and flashboard, described valve gap is fixed on valve body, one end of described valve rod is connected with handwheel, it is characterized in that: described flashboard comprises the first flashboard being fixed in valve body and the second flashboard being slidably matched with the first flashboard, the other end of the relative handwheel of described valve rod is fixedly connected with the second flashboard, described the first flashboard is provided with the first valve pocket, described the first valve pocket is located between intake tunnel and the second flashboard, described the first valve pocket and intake tunnel shape are suitable, the lower end of described the second flashboard is provided with second valve pocket suitable with exhalant canal shape, described intake tunnel with on exhalant canal, be equipped with the Sealing of conflicting and to be connected with flashboard.
2. a kind of gate valve according to claim 1, is characterized in that: the upper end of described the first flashboard is provided with fixing part, and described fixing part is set on valve rod and with valve gap and conflicts and be connected.
3. a kind of gate valve according to claim 1 and 2, is characterized in that: described Sealing is elastomer seal.
4. a kind of gate valve according to claim 3, is characterized in that: on described valve gap, be coated with stellite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546487.4U CN203477376U (en) | 2013-09-03 | 2013-09-03 | Gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546487.4U CN203477376U (en) | 2013-09-03 | 2013-09-03 | Gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477376U true CN203477376U (en) | 2014-03-12 |
Family
ID=50225707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320546487.4U Expired - Fee Related CN203477376U (en) | 2013-09-03 | 2013-09-03 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477376U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465390A (en) * | 2014-10-21 | 2016-04-06 | 上海沪航阀门有限公司 | Sandwich valve |
-
2013
- 2013-09-03 CN CN201320546487.4U patent/CN203477376U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465390A (en) * | 2014-10-21 | 2016-04-06 | 上海沪航阀门有限公司 | Sandwich valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20140903 |
|
| EXPY | Termination of patent right or utility model |