CN204900882U - Small -bore parallel gate valve - Google Patents
Small -bore parallel gate valve Download PDFInfo
- Publication number
- CN204900882U CN204900882U CN201520501514.5U CN201520501514U CN204900882U CN 204900882 U CN204900882 U CN 204900882U CN 201520501514 U CN201520501514 U CN 201520501514U CN 204900882 U CN204900882 U CN 204900882U
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- Prior art keywords
- valve
- flashboard
- seat
- valve rod
- rod
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Abstract
The utility model relates to the technical field of valves, a small -bore parallel gate valve is disclosed, which comprises the following components: a valve body, the valve pocket, the valve rod, both ends are equipped with left passageway respectively about the valve body, right side passageway, the upper end of valve pocket is equipped with the seal receptacle, the seal receptacle is passed to the upper end of valve rod, the upper end tip of valve rod still is equipped with the hand wheel that the drive valve rod goes up and down, left side passageway, the inner of right side passageway is equipped with coaxial left disk seat respectively, right side disk seat, left side disk seat, position between the disk seat of the right side is equipped with the gate base who fixes with the valve rod, gate base's both sides are equipped with left flashboard respectively, right side flashboard, left side flashboard, the outer terminal surface of right side flashboard is parallel, the inner extension of left side flashboard forms the outer joint cover, the inner extension of right side flashboard forms inner connecting sleeve, sliding connection between inner connecting sleeve and the outer joint cover, the last connecting hole that is equipped with of gate base, sliding connection between outer joint cover and the connecting hole, left side flashboard, be equipped with the pressure spring between the inner of right side flashboard. The utility model discloses have sealed effectually, the operation moment of torsion is little, the dead beneficial effect of anti -sticking.
Description
Technical field
The utility model relates to valve technology field, particularly relates to a kind of small-bore parallel gate valve.
Background technique
Gate valve is one of conventional block valve, is mainly used to the medium connected or block in pipeline, and it is very large that gate valve is applicable to pressure, temperature and bore scope, the moving direction of valve rod perpendicular to valve seat center line, in being particularly useful for, bigbore pipeline.Shape according to spool is divided, gate valve is divided into wedge shape Single disc, wedge shape double-flashboard, parallel Single disc and double disc parallel seat, all kinds of wedge action valve is domestic use gate valve comparatively widely, and flashboard is wedge-shaped structure, and structure is simple, cost is low, but sealing effect mainly relies on the extruding of flashboard and valve seat, have operational torque large, moving member is easily stuck, life-span is short, uses the intrinsic problem such as inconvenient.Such as: Chinese patent Authorization Notice No.: CN204267772U, authorized announcement date on April 15th, 2015, disclose a kind of gate valve, comprise brake valve body, gate valve cap, flashboard, pressure cap, screw mandrel and handwheel, gate valve cap is by pressure cap tight lock part, central holding portion and sealed department composition, pressure cap tight lock part is connected with pressure cap, sealed department offers the first mating groove, pad is placed in the first mating groove, brake valve body is provided with auxiliary section, and on auxiliary section, be provided with the second mating groove, gate valve cap is connected with auxiliary section by sealed department with brake valve body, by gate valve cap by pressure cap tight lock part, central holding portion and sealed department composition, the first mating groove that sealed department is offered and auxiliary section are provided with the second mating groove, gate valve cap is connected with auxiliary section by sealed department with brake valve body.The sealing of this kind of gate valve compresses flashboard by valve rod, and the inclined-plane of flashboard and the inclined-plane compression fit of valve seat are sealed, during Gate-valve sealing, moment of torsion is very large could seal completely in operation, when the wearing and tearing of flashboard bi-side are uneven, valve rod also can be subject to flexural stress, easily causes stuck phenomenon.
Model utility content
The utility model is in order to solve Gate-valve sealing weak effect of the prior art, and operation moment of torsion is large, and deficiency easily stuck during use, provides a kind of good seal performance, and operation moment of torsion is little, anti-jamming small-bore parallel gate valve.
To achieve these goals, the utility model adopts following technological scheme:
A kind of small-bore parallel gate valve, comprise valve body, valve pocket, valve rod, the two ends, left and right of valve body are respectively equipped with the left passage be communicated with valve pocket, right passage, valve rod lower end is stretched in valve pocket, the upper end of described valve pocket is provided with sealing seat, the upper end of valve rod is through sealing seat, the end, upper end of valve rod is also provided with the handwheel of actuate valve stem lifting, described left passage, the inner of right passage is respectively equipped with coaxial left valve seat, right valve seat, left valve seat, position between right valve seat is provided with the flashboard seat fixing with valve rod, the both sides of described flashboard seat are respectively equipped with left flashboard, right flashboard, left flashboard, the exterior edge face of right flashboard is parallel, the inner of described left flashboard extends to form outer connecting sleeve, the inner of described right flashboard extends to form interior connecting sleeve, be slidably connected between described interior connecting sleeve and outer connecting sleeve, described flashboard seat is provided with attachment hole, be slidably connected between described outer connecting sleeve and attachment hole, described left flashboard, stage clip is provided with between the inner of right flashboard.When gate valve is closed, left flashboard, right flashboard are under the effect of stage clip, and left flashboard, right flashboard seal with left valve seat, right seat compression respectively; When the pressure medium in left passage is very large, right flashboard and right seat compression seal; When the pressure medium in right passage is very large, left flashboard and left seat compression seal, and pressure is larger, and sealability is better; During Long-Time Service, when left flashboard, right flashboard end face are worn, under the effect of stage clip, have sealing compensation function, long service life, and stage clip has deformation nature, whole gate valve can not be stuck; No matter which kind of sealing state left flashboard, right flashboard are in, and valve rod can not be subject to radial active force all the time, and operation moment of torsion is little.
As preferably, the outer end of described left flashboard extends to form and contacts with left valve seat the annular seal lip sealed, and the outer end of described right flashboard extends to form and contacts with right valve seat the annular seal lip sealed.Annular seal lip intermediate portion is effective seal portion, the end face in effective seal portion, lower than the end face of annular seal lip, is therefore opened at gate valve, in closing process, effective seal portion can not be produced with left valve seat, right valve seat and rub, thus slow down the wearing and tearing of left valve seat, right valve seat, improve working life.
As preferably, described valve body is also provided with two guide rods parallel with valve rod, check plate is provided with between guide rod, be slidably connected between check plate and guide rod, the upper end of described valve rod is passed check plate and is fixedly connected with check plate, be provided with handwheel seat between the outer end of guide rod, described handwheel is arranged on handwheel seat, and the upper end of valve rod is threaded with between handwheel.Check plate can prevent valve rod from rotating, and when hand wheel rotating, valve rod is only axially elevated, and can not rotate.
As preferably, annular space is provided with between described sealing seat and valve rod, graphite packing is provided with in annular space, the lower end of described graphite packing is provided with supporting sleeve, the upper end of graphite packing is provided with gland, the upper end of described gland is provided with pressure ring, and between described pressure ring and the upper end of sealing seat, bolt is connected.Graphite packing plays seal action, and when sealing effect weakens, adjusting bolt compresses gland further, thus again seals.
As preferably, be provided with restraining groove between the outside of described sealing seat and valve pocket, described valve pocket upper end is provided with for four points of spacing rings of sealing seat, is provided with graphite gasket in described restraining groove, the upper end of graphite gasket is provided with metal washer, and four points of described rings are pressed in the upper end of metal washer.Four points of rings are spacing for sealing seat.
As preferably, the upper end open place of described valve pocket is provided with valve gap, is provided with annular top cover outside the upper end of described sealing seat, is connected between described annular top cover and the side of sealing seat by two points of rings, described annular top cover is provided with some bolts, and the end of described bolt is pressed in valve gap upper end.When needs dismounting valve, first open valve gap, take off four points of rings, and then load onto valve gap, then turn bolt, by the pulling force of bolt, sealing seat is unloaded out in valve pocket.
Therefore, the utility model has following beneficial effect: (1) good sealing effect, and operation moment of torsion is little, stuck phenomenon can not occur in gate valve using process; (2) when left flashboard, right flashboard move and left valve seat, friction between right valve seat little, left flashboard, right flashboard end have sealing compensation performance when there are wearing and tearing; (3) valve body convenient disassembly.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is flashboard seat, left flashboard, right flashboard connection diagram.
Fig. 3 is A place enlarged diagram in Fig. 1.
In figure: valve body 1, valve pocket 2, valve rod 3, left passage 4, right passage 5, sealing seat 6, guide rod 7, check plate 8, handwheel seat 9, graphite packing 10, supporting sleeve 11, gland 12, pressure ring 13, four points of rings 14, graphite gasket 15, metal washer 16, valve gap 17, annular top cover 18, two points of rings 19, bolt 20, left valve seat 21, right valve seat 22, flashboard seat 23, left flashboard 24, right flashboard 25, stage clip 26, annular seal lip 27, handwheel 28, outer connecting sleeve 240, interior connecting sleeves 250.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
The small-bore parallel gate valve of one as shown in Figure 1, comprise valve body 1, valve pocket 2, valve rod 3, the two ends, left and right of valve body are respectively equipped with the left passage 4 be communicated with valve pocket, right passage 5, valve rod 3 lower end is stretched in valve pocket, the upper end of valve pocket is provided with sealing seat 6, the upper end of valve rod 3 is through sealing seat 6, valve body 1 is also provided with two guide rods 7 parallel with valve rod, check plate 8 is provided with between guide rod, be slidably connected between check plate and guide rod, the upper end of valve rod 3 is passed check plate and is fixedly connected with check plate, handwheel seat 9 is provided with between the outer end of guide rod, handwheel 28 is arranged on handwheel seat, the upper end of valve rod is threaded with between handwheel.
As shown in Figure 3, between sealing seat 6 and valve rod, be provided with annular space, in annular space, be provided with graphite packing 10, the lower end of graphite packing is provided with supporting sleeve 11, the upper end of graphite packing is provided with gland 12, and the upper end of gland 12 is provided with pressure ring 13, and between pressure ring 13 and the upper end of sealing seat 6, bolt is connected; Be provided with restraining groove between the outside of sealing seat 6 and valve pocket, valve pocket 2 upper end is provided with for four points of spacing rings 14 of sealing seat, and be provided with graphite gasket 15 in restraining groove, the upper end of graphite gasket is provided with metal washer 16, and four points of rings are pressed in the upper end of metal washer; The upper end open place of valve pocket 2 is provided with valve gap 17, is provided with annular top cover 18 outside the upper end of sealing seat 6, is connected between annular top cover and the side of sealing seat by two points of rings 19, and annular top cover is provided with some bolts 20, and the end of bolt is pressed in valve gap upper end.
As shown in Figure 2, left passage 4, the inner of right passage 5 is respectively equipped with coaxial left valve seat 21, right valve seat 22, left valve seat 21, position between right valve seat 22 is provided with the flashboard seat 23 fixing with valve rod, the both sides of flashboard seat are respectively equipped with left flashboard 24, right flashboard 25, left flashboard, the exterior edge face of right flashboard is parallel, the inner of left flashboard 24 extends to form outer connecting sleeve 240, the inner of right flashboard 25 extends to form interior connecting sleeve 250, be slidably connected between interior connecting sleeve and outer connecting sleeve, flashboard seat is provided with attachment hole, be slidably connected between outer connecting sleeve and attachment hole, left flashboard 24, stage clip 26 is provided with between the inner of right flashboard 25, the outer end of left flashboard extends to form the annular seal lip 27 contacting with left valve seat and seal, and the outer end of right flashboard extends to form and contacts with right valve seat the annular seal lip sealed, and when gate valve is closed, annular seal lip contacts with left valve seat, right valve seat and seals.
When gate valve is closed, left flashboard, right flashboard are under the effect of stage clip, and left flashboard, right flashboard seal with left valve seat, right seat compression respectively; When the pressure medium in left passage is very large, right flashboard and right seat compression seal; When the pressure medium in right passage is very large, left flashboard and left seat compression seal, and pressure is larger, and sealability is better; During Long-Time Service, when left flashboard, right flashboard end face are worn, under the effect of stage clip, have sealing compensation function, long service life, and stage clip has deformation nature, whole gate valve can not be stuck; No matter which kind of sealing state left flashboard, right flashboard are in, and valve rod can not be subject to radial active force all the time, and operation moment of torsion is little.Therefore, the utility model has following beneficial effect: (1) good sealing effect, and operation moment of torsion is little, stuck phenomenon can not occur in gate valve using process; (2) when left flashboard, right flashboard move and left valve seat, friction between right valve seat little, left flashboard, right flashboard end have sealing compensation performance when there are wearing and tearing; (3) valve body convenient disassembly.
Claims (6)
1. a small-bore parallel gate valve, comprise valve body, valve pocket, valve rod, the two ends, left and right of valve body are respectively equipped with the left passage be communicated with valve pocket, right passage, valve rod lower end is stretched in valve pocket, the upper end of described valve pocket is provided with sealing seat, the upper end of valve rod is through sealing seat, the end, upper end of valve rod is also provided with the handwheel of actuate valve stem lifting, it is characterized in that, described left passage, the inner of right passage is respectively equipped with coaxial left valve seat, right valve seat, left valve seat, position between right valve seat is provided with the flashboard seat fixing with valve rod, the both sides of described flashboard seat are respectively equipped with left flashboard, right flashboard, left flashboard, the exterior edge face of right flashboard is parallel, the inner of described left flashboard extends to form outer connecting sleeve, the inner of described right flashboard extends to form interior connecting sleeve, be slidably connected between described interior connecting sleeve and outer connecting sleeve, described flashboard seat is provided with attachment hole, be slidably connected between described outer connecting sleeve and attachment hole, described left flashboard, stage clip is provided with between the inner of right flashboard.
2. small-bore parallel gate valve according to claim 1, is characterized in that, the outer end of described left flashboard extends to form and contacts with left valve seat the annular seal lip sealed, and the outer end of described right flashboard extends to form and contacts with right valve seat the annular seal lip sealed.
3. small-bore parallel gate valve according to claim 1, it is characterized in that, described valve body is also provided with two guide rods parallel with valve rod, check plate is provided with between guide rod, be slidably connected between check plate and guide rod, the upper end of described valve rod is passed check plate and is fixedly connected with check plate, is provided with handwheel seat between the outer end of guide rod, described handwheel is arranged on handwheel seat, and the upper end of valve rod is threaded with between handwheel.
4. the small-bore parallel gate valve according to claim 1 or 2 or 3, it is characterized in that, annular space is provided with between described sealing seat and valve rod, graphite packing is provided with in annular space, the lower end of described graphite packing is provided with supporting sleeve, the upper end of graphite packing is provided with gland, and the upper end of described gland is provided with pressure ring, and between described pressure ring and the upper end of sealing seat, bolt is connected.
5. small-bore parallel gate valve according to claim 4, it is characterized in that, restraining groove is provided with between the outside of described sealing seat and valve pocket, described valve pocket upper end is provided with for four points of spacing rings of sealing seat, graphite gasket is provided with in described restraining groove, the upper end of graphite gasket is provided with metal washer, and four points of described rings are pressed in the upper end of metal washer.
6. small-bore parallel gate valve according to claim 5, it is characterized in that, the upper end open place of described valve pocket is provided with valve gap, annular top cover is provided with outside the upper end of described sealing seat, be connected by two points of rings between described annular top cover and the side of sealing seat, described annular top cover is provided with some bolts, and the end of described bolt is pressed in valve gap upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520501514.5U CN204900882U (en) | 2015-07-13 | 2015-07-13 | Small -bore parallel gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520501514.5U CN204900882U (en) | 2015-07-13 | 2015-07-13 | Small -bore parallel gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204900882U true CN204900882U (en) | 2015-12-23 |
Family
ID=54923059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520501514.5U Expired - Fee Related CN204900882U (en) | 2015-07-13 | 2015-07-13 | Small -bore parallel gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204900882U (en) |
-
2015
- 2015-07-13 CN CN201520501514.5U patent/CN204900882U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200918 Address after: 325000 Huang Tian Jie Dao Feng Yu Cun, Yongjia County, Wenzhou City, Zhejiang Province Patentee after: Ouqiu Valve Co.,Ltd. Address before: Hangzhou City, Zhejiang province 311516 Tonglu County town Yaolin Industrial Zone Patentee before: HATUOLIHAITUO VALVE (HANGZHOU) Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20210713 |