CN205226416U - Smart small -size antiscour stop valve valve rod hexagonal guide structure - Google Patents
Smart small -size antiscour stop valve valve rod hexagonal guide structure Download PDFInfo
- Publication number
- CN205226416U CN205226416U CN201521064532.8U CN201521064532U CN205226416U CN 205226416 U CN205226416 U CN 205226416U CN 201521064532 U CN201521064532 U CN 201521064532U CN 205226416 U CN205226416 U CN 205226416U
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- valve
- valve rod
- cavity
- case
- rod
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Abstract
The utility model provides a smart small -size antiscour stop valve valve rod hexagonal guide structure, includes: valve rod, case, valve gap, valve rod and case are connected and make case and valve rod rotate relatively, are equipped with the structure of splining in the valve rod lower part, and the structure of should splining has six planes of outside protrusion, and this plane is parallel with the valve rod axis, it has the ladder through -hole to open on the axis of valve gap, and the top is the packing cavity, and the packing cavity below is regular hexagon's stem cavity, and stem cavity's size is matchd with the structure of splining. The utility model discloses case and valve rod can not rotate relatively, and the rotation or the horizontal chatter under the high pressure is poor of valve rod can effectually be prevented and treated to the structure of splining to avoid because the too early wearing and tearing of the sealed face of the case that the rotation of case leads to.
Description
Technical field:
The utility model relates to stop valve technical field, particularly the smart small-sized scouring-proof stop valve valve rod six side guide structure of one.
Background technique:
Stop valve, is also pipe valve, is most popular a kind of valve, is not only applicable to mesolow, and is applicable to high pressure.The closed principle of stop valve is, relies on valve thick stick pressure, valve clack sealing surface and sealing surface of seat are fitted tightly, and stops medium circulation.There is many defects in current stop valve, comprising: 1, volume is large; 2, valve core sealed cover easily weares and teares and causes seal failure; 3, the coaxality of valve rod spool is bad, easily causes valve rod to pull or fractures; 4, complex structure, component are many, and cost is high; 5, spool easily rotates or easily transverse vibration occurs under High Pressure Difference, thus causes the wearing and tearing of valve core sealed cover.
Summary of the invention:
Given this, be necessary to design and a kind ofly can avoid the essence of valve core rotation small-sized scouring-proof stop valve valve rod six side guide structure.
A kind of smart small-sized scouring-proof stop valve valve rod six side guide structure, comprising: valve rod, spool, valve gap; Valve rod is connected with spool and spool and valve rod can not be relatively rotated, and is provided with spline structure in stem lower portion, and this spline structure is with outwardly six planes, and this plane is parallel with valve rod axis; The medial axis of valve gap has ladder hole, and top is packing cavity, be orthohexagonal valve-rod cavity, and the size of valve-rod cavity is mated with spline structure below packing cavity.
The utility model spool and valve rod can not relatively rotate, and spline structure can the rotation of effectively preventing valve rod or the horizontal chatter under High Pressure Difference, thus avoid because the valve core sealed cover premature abrasion that causes of the rotation of spool.
Accompanying drawing illustrates:
Accompanying drawing 1 is the sectional structure schematic diagram of the small-sized scouring-proof stop valve of essence of a width better embodiment.
Accompanying drawing 2 is valve rods of a width better embodiment, the main apparent direction of spool partly cut open schematic diagram.
Accompanying drawing 3 is schematic cross-sections of the spline structure of a width better embodiment.
Accompanying drawing 4 is axial sectional views of the valve gap of a width better embodiment.
Accompanying drawing 5 is the partial enlarged drawings in accompanying drawing 4A portion.
Accompanying drawing 6 is that medium flows to schematic diagram in medium runner.
In figure: valve body 1, valve rod 2, spool 3, valve gap 4, MEDIA FLOW outlet 31, valve core sealed cover 32, spline structure 21, middle part round platform 41, the second level step 42 of middle part round platform, bonnet lower sidewall 43, circular groove 44, packing cavity 45, valve-rod cavity 46, spool chamber 12, medium runner 11, valve cover cavity 13, cemented carbide 14, support 5, handwheel 6, screw 51, bearing 52, filler 7, Gland 8, groove 33.
Embodiment:
As shown in accompanying drawing 1 ~ 6, a kind of small-sized scouring-proof stop valve of essence with essence small-sized scouring-proof stop valve valve rod six side guide structure, comprising: valve body 1, valve rod 2, spool 3, valve gap 4, wherein, valve rod 2 and spool 3 are the integral structure of non-assembling, spool 3 is cylindric, its bottom surface opening is MEDIA FLOW entrance, spool 3 sidewall has MEDIA FLOW outlet 31, sidewall above MEDIA FLOW outlet 31 connects the conical surface extended out, and this conical surface is valve core sealed cover 32, is provided with spline structure 21 in valve rod 2 bottom, valve gap 4 is single-revolution body, in the middle part of it, round platform 41 radius is maximum, the bottom thickness adduction of middle part round platform 41 forms the second level step 42 of middle part round platform, one week circular groove 44 is provided with between the second level step 42 of middle part round platform and bonnet lower sidewall 43, the bottom of the second level step 42 of middle part round platform is the conical surface of an adduction, the medial axis of valve gap 4 has ladder hole, top is packing cavity 45, be valve-rod cavity 46 below packing cavity 45, valve-rod cavity 46 shape is mated with spline structure 21 and is made valve rod 2 in valve gap 4, only have degrees of freedom vertically, its medium runner 11 of valve body 1 is bottom in and top out formula, and it is through with entry/exit medium runner 11 to be provided with spool chamber 12, the shape size of spool chamber 12 mates with spool 3 sidewall, the top of spool chamber 12 is connected to valve cover cavity 13, the shape of valve cover cavity 13 is mated with valve gap 4 and valve cover cavity 13 radius above corresponding middle part valve cover cavity 13 radius at second level step 42 place of round platform and the second level step 42 of middle part round platform is consistent, make like this to leave gap between the second level step 42 of middle part round platform and the valve cover cavity 13 of its corresponding part, after medium flows into circular groove 44 along bonnet lower sidewall 43 and the gap of valve cover cavity 13 at elevated pressures, force the second level step 42 of middle part round platform to extending out and finally making its conical surface tightly be attached to the corresponding part of valve cover cavity 13, thus realize hard sealing and as the pressure increases, sealing can be more reliable, spool chamber 12 is coaxial with valve cover cavity 13, is provided with the cemented carbide 14 matched with valve core sealed cover 32 for a week in spool chamber 12 and the connecting part of valve cover cavity 13, as shown in Figure 6, when the valve is open, medium flows out from the MEDIA FLOW outlet 31 of spool 3 sidewall, because MEDIA FLOW outlet 31 also has a segment distance with valve core sealed cover 32, therefore valve core sealed cover 32 can not suffer strongly to wash away, thus extend life-span of valve core sealed cover 32, in Fig. 6 arrow be MEDIA FLOW to, spline structure 21 is with outwardly six planes, and this plane and valve rod 2 axis being parallel, valve-rod cavity 46 cross section is regular hexagon.
In the present embodiment, smart small-sized scouring-proof stop valve valve rod six side guide structure also comprises: support 5, handwheel 6, screw 51, bearing 52; Support 5 is threaded in valve body 1 top, and screw 51 is arranged on support 5 top by the bearing 52 outside it, and valve rod 2 top is threaded with screw 51, and screw 51 top is fixed on handwheel 6 center.
In the present embodiment, smart small-sized scouring-proof stop valve valve rod six side guide structure also comprises: filler 7, Gland 8; Filler 7 be filled in packing cavity 45 and valve rod 2 formed in space, be fixed with Gland 8 above filler 7.
In the present embodiment, the second level step 42 of middle part round platform is relative to its top below adduction 1mm.
In the present embodiment, the cemented carbide 14 of spool chamber 12 and the connecting part of valve cover cavity 13 forms for built-up welding.
In the present embodiment, spool 3 upper-end surface has one week groove 33 downwards, and groove 33 internal diameter is consistent with valve rod 2 diameter at its place place.
Claims (1)
1. an essence small-sized scouring-proof stop valve valve rod six side guide structure, is characterized in that: comprising: valve rod, spool, valve gap; Valve rod is connected with spool and spool and valve rod can not be relatively rotated, and is provided with spline structure in stem lower portion, and this spline structure is with outwardly six planes, and this plane is parallel with valve rod axis; The medial axis of valve gap has ladder hole, and top is packing cavity, be orthohexagonal valve-rod cavity, and the size of valve-rod cavity is mated with spline structure below packing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521064532.8U CN205226416U (en) | 2015-12-20 | 2015-12-20 | Smart small -size antiscour stop valve valve rod hexagonal guide structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521064532.8U CN205226416U (en) | 2015-12-20 | 2015-12-20 | Smart small -size antiscour stop valve valve rod hexagonal guide structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205226416U true CN205226416U (en) | 2016-05-11 |
Family
ID=55901483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521064532.8U Expired - Fee Related CN205226416U (en) | 2015-12-20 | 2015-12-20 | Smart small -size antiscour stop valve valve rod hexagonal guide structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205226416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084078A (en) * | 2018-10-26 | 2018-12-25 | 吴忠中创自控阀有限公司 | A kind of Y-shaped cut-off valve |
-
2015
- 2015-12-20 CN CN201521064532.8U patent/CN205226416U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084078A (en) * | 2018-10-26 | 2018-12-25 | 吴忠中创自控阀有限公司 | A kind of Y-shaped cut-off valve |
| CN109084078B (en) * | 2018-10-26 | 2020-02-07 | 吴忠中创自控阀有限公司 | Y-shaped stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20160511 Termination date: 20191220 |