CN204647536U - A kind of cock-type cut-off spool - Google Patents
A kind of cock-type cut-off spool Download PDFInfo
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- CN204647536U CN204647536U CN201520179790.4U CN201520179790U CN204647536U CN 204647536 U CN204647536 U CN 204647536U CN 201520179790 U CN201520179790 U CN 201520179790U CN 204647536 U CN204647536 U CN 204647536U
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- valve rod
- cock
- valve
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Abstract
The utility model discloses a kind of cock-type cut-off spool, comprise valve gap, valve rod, be arranged on the flap on valve stem end, valve stem spacing hole and flap pilot hole is provided with in turn in described valve gap, described valve gap inner chamber is separated into the first chamber be communicated with in turn, second chamber and the 3rd chamber, the external diameter of described flap is less than flap pilot hole internal diameter 0.3-0.5mm, the external diameter of described flap is greater than the internal diameter in valve stem spacing hole, described valve rod in the first chamber is provided with the annular ridge that external diameter is greater than valve stem spacing hole internal diameter, packing layer is provided with between the first chamber inner wall and described valve rod outer wall, the described valve gap of the first chamber side is provided with and is set on described valve rod and bottom extends into the Gland in the first chamber, integrated seal washer is provided with bottom described flap.The utility model has the advantages that: simplify filling-material structure, improve the sealing effect of valve rod, extend working life, integral sealing effect is better.
Description
Technical field
The utility model relates to pipeline connection valve technology field, especially relates to a kind of cock-type stop valve.
Background technique
The spool of stop valve conventional is at present divided into rise-fall type and cock-type two kinds.Wherein rise-fall type spool operationally, and valve rod will move up and down, so the Design of length of valve rod is longer, needs accordingly to arrange enough installation and operation spaces, cause equipment cost higher.The valve rod of cock-type spool is fixed on valve body by valve gap, one end of valve rod is limited in valve body, the other end extends valve gap and connects handwheel outward, valve rod bottom is arranged with flap, valve body is provided with flap pilot hole, flap bottom is fixed with seal washer by the fastening piece such as nut or screw, realizes the sealing to circulation passage.When handwheel band ovable valve stem rotates, flap under the position-limiting action of flap pilot hole, can move up and down along valve rod, thus realizes the effect of opening or closing circulation passage.Because valve rod extends to valve body in valve body, for ensureing sealing, usually O-ring seals is set between valve gap inwall and valve rod.Common O RunddichtringO is easily aging, and the life-span is short, causes this sealing effect poor, affects the working life of valve.Damaging or loosening easily appears in the fastening piece of seal washer, the seal spool effect after impact closedown.
Summary of the invention
The purpose of this utility model is to provide the cock-type cut-off spool of a kind of good sealing effect, long service life.
Technical solution of the present utility model is: a kind of cock-type cut-off spool, comprise valve gap, valve rod, be arranged on the flap on valve stem end, valve stem spacing hole and flap pilot hole is provided with in turn in described valve gap, described valve gap inner chamber is separated into the first chamber be communicated with in turn, second chamber and the 3rd chamber, the external diameter of described flap is less than flap pilot hole internal diameter 0.3-0.5mm, the external diameter of described flap is greater than the internal diameter in valve stem spacing hole, described valve rod in the first chamber is provided with the annular ridge that external diameter is greater than valve stem spacing hole internal diameter, packing layer is provided with between the first chamber inner wall and described valve rod outer wall, the described valve gap of the first chamber side is provided with and is set on described valve rod and bottom extends into the Gland in the first chamber, integrated seal washer is provided with bottom described flap.
The valve stem spacing hole arranged in valve gap, passing through of annular ridge can be limited, make the valve stem spacing after installing flap in valve gap, by being filled in packing layer in the first chamber by valve rod and valve bonnet seal, by Gland, packing layer is fixed, after packing layer damages, Gland can be opened, reseal after changing packing layer, or compress Gland realization sealing, thus extend the working life of spool.Flap can pass through along flap pilot hole and rotate with valve rod and move up and down, and the integrated seal washer arranged bottom flap can avoid fastening piece to loosen the leakage caused, and overall sealing effect is better.
Circular groove is provided with in the bottom of described first chamber.Filler after extrusion-deformation can be filled in circular groove, improves the fix tightly soundness of packing layer, the packing layer shifting phenomena brought when avoiding valve rod pushes up, and improves the effect of sealing further.
The sidewall of the described circular groove towards side, described valve stem spacing hole is provided with the inclined plane part tilted towards described valve rod direction.Filler can be made to fill towards valve rod direction further, improve sealability.
Inwall bottom described Gland is provided with the ring groove coordinated with described annular ridge.Ring groove can limit the displacement of valve rod, and Gland can play the effect of spacing valve rod.
Packing washer is provided with bottom described Gland and between described packing layer top.Can conducting to the pressure uniform of Gland on packing layer.
Described flap bottom is provided with curved portions and ring projection, on the one-body molded described flap between curved portions and ring projection of described seal washer.The area of contact with seal washer can be increased, make it be not easy to come off, its working life is provided further.
The horizontal section of described flap pilot hole is regular hexagon, and the horizontal section of corresponding described flap external diameter is regular hexagon.Regular hexagon symmetrical configuration, leads more stable.
The utility model has the advantages that: simplify filling-material structure, improve the sealing effect of valve rod, extend working life, integral sealing effect is better.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the utility model embodiment;
Accompanying drawing 2 is the structural representation of valve gap in the utility model embodiment;
Accompanying drawing 3 is the structural representation of Gland in the utility model embodiment;
1, valve gap, 2, valve rod, 3, flap, 4, valve stem spacing hole, 5, flap pilot hole, the 6, first chamber, the 7, second chamber, the 8, the 3rd chamber, 9, annular ridge, 10, packing layer, 11, Gland, 12, seal washer, 13, circular groove, 14, inclined plane part, 15, ring groove, 16, packing washer, 17, curved portions, 18, ring projection, 19, handwheel, 20, nut, 21, O type circle.
Embodiment
Embodiment:
Consult Fig. 1 ~ 3, a kind of cock-type cut-off spool, comprise valve gap 1, valve rod 2, be set in the flap 3 on valve rod 1 end, valve stem spacing hole 4 and flap pilot hole 5 is provided with in turn in valve gap 1, valve gap 1 inner chamber is separated into the first chamber 6 be communicated with in turn, second chamber 7 and the 3rd chamber 8, the external diameter of flap 3 is less than the internal diameter 0.3-0.5mm of flap pilot hole 5, the external diameter of flap 3 is greater than the diameter in valve stem spacing hole 4, flap can move in the second chamber 7 and the 3rd chamber 8, valve rod 2 in the first chamber 6 is provided with the annular ridge 9 that diameter is greater than valve stem spacing hole 4 diameter, packing layer 10 is provided with between the first chamber 6 inwall and valve rod 2 outer wall, the valve gap 1 of the first chamber 6 side is provided with and is set on valve rod 2 and bottom extends into the Gland 11 in the first chamber 6, packing washer 16 is provided with bottom Gland 11 and between packing layer 10 top.Circular groove 13 is provided with in the bottom of the first chamber 6.The sidewall of the circular groove 13 towards side, valve stem spacing hole 4 is provided with the inclined plane part 14 tilted towards valve rod 2 direction.Inwall bottom Gland 11 is provided with the ring groove 15 coordinated with annular ridge 9.Flap 3 bottom is provided with curved portions 17 and ring projection 18, on the one-body molded flap 3 between curved portions 17 and ring projection 18 of seal washer 12.The top of valve rod 2 is fixed with handwheel 19 by nut 20.Valve gap 1 is provided with the O type circle 21 of sealing when being connected with valve body.The horizontal section of flap pilot hole 5 is regular hexagon, and the external diameter horizontal section of corresponding flap 3 is also in regular hexagon.
The valve stem spacing hole 4 arranged in valve gap 1, passing through of annular ridge 9 can be limited, make the valve rod 2 after installing flap 3 spacing in valve gap 1, the ring groove 15 bottom Gland 11 can the displacement of annular ridge 9 of spacing valve rod 2, makes valve rod 2 spacing in valve gap 1.The packing layer 10 of filling in the first chamber 6 is by the clearance seal of valve rod 2 with valve gap 1, compress Gland 11 packing layer 10 to be fixed, when packing layer 10 damages, Gland 11 can be opened, reseal after the packing layer 10 more renewed, or directly compress Gland 11, extruding packing layer 10 plays the effect of sealing further, extends its working life.Replacing stuffing box packing is convenient, thus extends the working life of spool.Flap 3 can along flap pilot hole 5 by and rotate with valve rod 2 and move up and down, it is one-body molded that the curved portions 17 arranged bottom flap 4 and ring projection 18 hold seal washer 12, and overall sealing effect is better.
Above-listed detailed description is illustrating for one of the utility model possible embodiments, this embodiment is also not used to limit the scope of the claims of the present utility model, allly do not depart from the equivalence that the utility model does and implement or change, all should be contained in the scope of the claims of this case.
Claims (7)
1. a cock-type cut-off spool, comprise valve gap, valve rod, be arranged on the flap on valve stem end, it is characterized in that: in described valve gap, be provided with valve stem spacing hole and flap pilot hole in turn, described valve gap inner chamber is separated into the first chamber be communicated with in turn, second chamber and the 3rd chamber, the external diameter of described flap is less than flap pilot hole internal diameter 0.3-0.5mm, the external diameter of described flap is greater than the internal diameter in valve stem spacing hole, described valve rod in the first chamber is provided with the annular ridge that external diameter is greater than valve stem spacing hole internal diameter, packing layer is provided with between the first chamber inner wall and described valve rod outer wall, the described valve gap of the first chamber side is provided with and is set on described valve rod and bottom extends into the Gland in the first chamber, integrated seal washer is provided with bottom described flap.
2. a kind of cock-type cut-off spool according to claim 1, is characterized in that: be provided with circular groove in the bottom of described first chamber.
3. a kind of cock-type cut-off spool according to claim 2, is characterized in that: on the sidewall of the described circular groove towards side, described valve stem spacing hole, be provided with the inclined plane part tilted towards described valve rod direction.
4. a kind of cock-type cut-off spool according to claim 1 or 2 or 3, is characterized in that: the inwall bottom described Gland is provided with the ring groove coordinated with described annular ridge.
5. a kind of cock-type cut-off spool according to claim 4, is characterized in that: bottom described Gland and between described packing layer top, be provided with packing washer.
6. a kind of cock-type cut-off spool according to claim 4, is characterized in that: on described flap bottom, be provided with curved portions and ring projection, on the one-body molded described flap between curved portions and ring projection of described seal washer.
7. a kind of cock-type cut-off spool according to claim 4, it is characterized in that: the horizontal section of described flap pilot hole is regular hexagon, the horizontal section of corresponding described flap external diameter is regular hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520179790.4U CN204647536U (en) | 2015-03-27 | 2015-03-27 | A kind of cock-type cut-off spool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520179790.4U CN204647536U (en) | 2015-03-27 | 2015-03-27 | A kind of cock-type cut-off spool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204647536U true CN204647536U (en) | 2015-09-16 |
Family
ID=54100287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520179790.4U Active CN204647536U (en) | 2015-03-27 | 2015-03-27 | A kind of cock-type cut-off spool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204647536U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369174A (en) * | 2016-10-27 | 2017-02-01 | 南通海狮船舶机械有限公司 | Quick-closing valve |
-
2015
- 2015-03-27 CN CN201520179790.4U patent/CN204647536U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369174A (en) * | 2016-10-27 | 2017-02-01 | 南通海狮船舶机械有限公司 | Quick-closing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 528000 Guangdong province Foshan City Temple Road No. 16 HSBC Building 8 floor Patentee after: RIFENG ENTERPRISE GROUP CO., LTD. Patentee after: WENZHOU RIFENG TECHNOLOGY CO., LTD. Address before: 528000 Guangdong province Foshan City Temple Road No. 16 HSBC Building 8 floor Patentee before: Rifeng Enterprise Co., Ltd., Foshan Patentee before: Foshan market day rich science and technology in enterprise company limited |