CN102032354A - Axial adjusting device of butterfly valve shaft - Google Patents
Axial adjusting device of butterfly valve shaft Download PDFInfo
- Publication number
- CN102032354A CN102032354A CN 201110005496 CN201110005496A CN102032354A CN 102032354 A CN102032354 A CN 102032354A CN 201110005496 CN201110005496 CN 201110005496 CN 201110005496 A CN201110005496 A CN 201110005496A CN 102032354 A CN102032354 A CN 102032354A
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- adjusting screw
- valve shaft
- end cap
- valve
- axial
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Abstract
The invention discloses an axial adjusting device of a butterfly valve shaft. Axial round holes are uniformly distributed in the outer circumference of a round end cover; the upper part of the end cover is connected with a convex cylinder; a sealing groove is arranged on the cylinder of the end cover; an adjusting screw is screwed in the center of the end cover; a sealing ring is arranged between the adjusting screw and the round hole; a round protrusion is arranged at the upper end of the adjusting screw; an annular friction pad is sleeved on the round protrusion; a fastening nut and a binding nut are sequentially screwed at the lower end of the adjusting screw; a split ring comprising two half rings is supported against and connected with the upper end of the cylinder of the end cover; and a protective cover connected by screws is arranged at the end face of the end cover. In the invention, the rotatable adjusting screw is arranged on the end cover; the friction pad is arranged at the upper end of the adjusting screw; after the butterfly valve is assembled, the friction pad is closely supported against the lower end face of the valve shaft; the valve shaft can continuously move along the axial direction conveniently by rotating the adjusting screw; and when the butterfly valve is assembled, debugged and overhauled, the fit between the sealing ring of the valve body and a sealing ring of a butterfly plate can be conveniently adjusted, so that the fit precision between the sealing ring of the valve body and the sealing ring of the butterfly plate is higher.
Description
Technical field
The present invention relates to the axial-adjustment unit of a kind of parts of butterfly valve, particularly a kind of butterfly valve shaft.
Background technique
Butterfly valve has cylinder valve, on the valve body circumference, following both sides have respectively relative on, the lower valve shaft seat, on, have between the lower valve shaft seat and the perpendicular valve shaft of the axis of valve body cylinder, the drive unit that valve shaft is arranged on the last valve shaft seat of valve body, the below of the lower valve shaft seat of valve body is connected with circular end cap, the excircle of end cap face is evenly equipped with axial circular hole, there is circular protrusions the centre of end cap upper side, on the circular protrusions of end cap, the ring friction pad is arranged between the lower end of valve shaft and the end cap, valve shaft a section in valve body is connected with the circular plate type butterfly plate, the butterfly plate excircle has the butterfly plate sealing seat, be inlaid with the butterfly plate seal ring on the sealing seat, annular valve sealing seat along the valve body inner circumference is arranged in the valve body, the valve seal ring that matches with the butterfly plate seal ring is arranged on the valve seal seat, valve seal ring and the butterfly plate seal ring sealing pair that partners.When the assembling butterfly valve, want the axial adjustment valve shaft, valve seals is cooperated tightly with the butterfly plate seal ring, in the prior art, be with the method axial adjustment valve shaft of adjusting the gap between valve shaft lower end and the end cap, the gap of adjusting between valve shaft lower end and the end cap is to regulate the thickness of ring friction pad or add the ring pad below the ring friction pad; When butterfly valve vertically uses, because of the valve shaft rotation can cause wearing and tearing that the thickness of friction pad is reduced to friction pad, the thickness of friction pad reduces to make the axially downward play of valve shaft, cause valve seals to cooperate mistake to close with the butterfly plate seal ring, in order to recover the quality of fit of valve seals and butterfly plate seal ring, to axially upwards regulate valve shaft, make valve seals and butterfly plate seal ring recover quality of fit, when the maintenance butterfly valve, in order axially upwards to regulate valve shaft, it also is method axial adjustment valve shaft with the gap between above-mentioned adjustment valve shaft lower end and the end cap, the method of above-mentioned axial adjustment valve shaft not only bothers, because adding the axial displacement that the method for ring pad makes valve shaft is discontinuous that level is arranged, so behind the axial adjustment valve shaft, valve seals and butterfly plate seal ring quality of fit are not high.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned deficiency, a kind of axial adjustment valve shaft is proposed after, the axial-adjustment unit of valve seals and butterfly plate seal ring quality of fit height, butterfly valve shaft easy to adjust.
The present invention is achieved using the following method.
The axial-adjustment unit of butterfly valve shaft has circular end cap, the excircle of end cap face is evenly equipped with axial circular hole, be connected with the cylinder of projection above the end cap, groove along circumference is arranged on the excircle of end cap cylinder, seal ring is arranged in the groove, there is circular hole at the center of end cap, the hypomere of circular hole is an interior threaded hole, be rotary with adjusting screw rod in the interior threaded hole section, between the epimere of adjusting screw rod and circular hole seal ring is arranged, there is circular protrusions the upper end of adjusting screw rod, be with the ring friction pad on the circular protrusions, the lower end of adjusting screw rod is rotary with tightening nut and binding nut successively, and the upper end of end cap cylinder is supported and is connected with the divided ring of being made up of two semicircular ring, the protecting cover that the useful screw in the lower end surface of end cap links to each other.
The present invention cooperates the lower end spindle nose to have along the valve shaft of circumferential groove to use, and valve shaft lower end spindle nose upper groove bottom land diameter of a circle is identical with the internal diameter of divided ring, and the bottom land width of groove is greater than the thickness of divided ring.
During installation, divided ring of the present invention is enclosed within the groove of valve shaft lower end spindle nose, circular end cap of the present invention is installed in the below of valve body lower valve shaft seat by the uniform axial circular hole of end cap face excircle with screw rod, valve shaft lower end spindle nose is in the end cap cylinder, and the friction pad of adjusting screw rod upper end is tight against the lower end surface at valve shaft.
During use, when the butterfly valve vertical position, unload the protecting cover of the lower end surface of lower end cap, unclamp binding nut and tightening nut, the rotation adjusting screw rod can make valve shaft move vertically.
Rotatable adjusting screw rod is arranged on the end cap of the present invention, there is friction pad the adjusting screw rod upper end, after being assembled into butterfly valve, friction pad is tight against the lower end surface at valve shaft, the rotation adjusting screw rod can make valve shaft move continuously vertically easily, when the assembly and adjustment butterfly valve or when the maintenance butterfly valve, easily cooperating of regulation valve body seal ring and butterfly plate seal ring, make the quality of fit of valve seals and butterfly plate seal ring higher.
Below in conjunction with accompanying drawing, the present invention is further described.
Description of drawings
Fig. 1 is the main cross-sectional schematic according to the axial-adjustment unit of a kind of butterfly valve shaft of invention scheme proposition of the present invention;
Fig. 2 is that the master of the axial-adjustment unit of butterfly valve shaft analyses and observe the fractionation schematic representation;
Fig. 3 is the A-A cross-sectional schematic of Fig. 1.
Embodiment
Among Fig. 1 ~ Fig. 3, the axial-adjustment unit of butterfly valve shaft has circular end cap 1, the excircle of end cap face is evenly equipped with axial circular hole 2, be connected with the cylinder 3 of projection above the end cap, groove 4 along circumference is arranged on the excircle of end cap cylinder, seal ring 5 is arranged in the groove, there is circular hole 6 at the center of end cap, the hypomere of circular hole is an interior threaded hole 7, be rotary with adjusting screw rod 8 in the interior threaded hole section, seal ring 9 is arranged between the epimere of adjusting screw rod and circular hole, there is circular protrusions 10 upper end of adjusting screw rod, is with ring friction pad 11 on the circular protrusions, and the lower end of adjusting screw rod is rotary with tightening nut 12 and binding nut 13 successively, the upper end of end cap cylinder is supported and is connected with the divided ring of being made up of two semicircular ring 14, the protecting cover 15 that the useful screw in the lower end surface of end cap links to each other.
Claims (1)
1. the axial-adjustment unit of a butterfly valve shaft, circular end cap is arranged, the excircle of end cap face is evenly equipped with axial circular hole, it is characterized in that: the cylinder that is connected with projection above the end cap, groove along circumference is arranged on the excircle of end cap cylinder, seal ring is arranged in the groove, there is circular hole at the center of end cap, the hypomere of circular hole is an interior threaded hole, be rotary with adjusting screw rod in the interior threaded hole section, between the epimere of adjusting screw rod and circular hole seal ring is arranged, there is circular protrusions the upper end of adjusting screw rod, is with the ring friction pad on the circular protrusions, and the lower end of adjusting screw rod is rotary with tightening nut and binding nut successively, the upper end of end cap cylinder is supported and is connected with the divided ring of being made up of two semicircular ring, the protecting cover that the useful screw in the lower end surface of end cap links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110005496 CN102032354A (en) | 2011-01-12 | 2011-01-12 | Axial adjusting device of butterfly valve shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110005496 CN102032354A (en) | 2011-01-12 | 2011-01-12 | Axial adjusting device of butterfly valve shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102032354A true CN102032354A (en) | 2011-04-27 |
Family
ID=43885636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110005496 Pending CN102032354A (en) | 2011-01-12 | 2011-01-12 | Axial adjusting device of butterfly valve shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102032354A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244692A (en) * | 2013-05-08 | 2013-08-14 | 博纳斯威阀门有限公司 | Butterfly valve |
| CN106439201A (en) * | 2016-08-29 | 2017-02-22 | 大唐清苑热电有限公司 | Online butterfly valve tightness adjusting device |
| CN108036062A (en) * | 2017-11-14 | 2018-05-15 | 凯喜姆阀门有限公司 | A kind of high pressure eccentric-butterfly-valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2310897Y (en) * | 1997-11-06 | 1999-03-17 | 天津塘沽瓦特斯阀门有限公司 | Eccentric flanged butterfly valve with soft sealing device |
| CN2495863Y (en) * | 2001-08-03 | 2002-06-19 | 唐思勋 | Double hard and sealing type butterfly valve |
| CN2594565Y (en) * | 2002-12-24 | 2003-12-24 | 天津塘沽瓦特斯阀门有限公司 | Eccentric butterfly valve with flangeseal |
| CN2916286Y (en) * | 2005-12-28 | 2007-06-27 | 贺旭阁 | Two-way-bearing and two-way-seal flexible sealing flange butterfly valve |
| CN201318449Y (en) * | 2008-12-09 | 2009-09-30 | 辽宁能发伟业能源科技有限公司 | Butterfly valve with butterfly plate adjusting device |
| CN201672073U (en) * | 2010-05-13 | 2010-12-15 | 上海开维喜阀门集团有限公司 | On-line adjustable positioning bottom cover |
-
2011
- 2011-01-12 CN CN 201110005496 patent/CN102032354A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2310897Y (en) * | 1997-11-06 | 1999-03-17 | 天津塘沽瓦特斯阀门有限公司 | Eccentric flanged butterfly valve with soft sealing device |
| CN2495863Y (en) * | 2001-08-03 | 2002-06-19 | 唐思勋 | Double hard and sealing type butterfly valve |
| CN2594565Y (en) * | 2002-12-24 | 2003-12-24 | 天津塘沽瓦特斯阀门有限公司 | Eccentric butterfly valve with flangeseal |
| CN2916286Y (en) * | 2005-12-28 | 2007-06-27 | 贺旭阁 | Two-way-bearing and two-way-seal flexible sealing flange butterfly valve |
| CN201318449Y (en) * | 2008-12-09 | 2009-09-30 | 辽宁能发伟业能源科技有限公司 | Butterfly valve with butterfly plate adjusting device |
| CN201672073U (en) * | 2010-05-13 | 2010-12-15 | 上海开维喜阀门集团有限公司 | On-line adjustable positioning bottom cover |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244692A (en) * | 2013-05-08 | 2013-08-14 | 博纳斯威阀门有限公司 | Butterfly valve |
| CN106439201A (en) * | 2016-08-29 | 2017-02-22 | 大唐清苑热电有限公司 | Online butterfly valve tightness adjusting device |
| CN108036062A (en) * | 2017-11-14 | 2018-05-15 | 凯喜姆阀门有限公司 | A kind of high pressure eccentric-butterfly-valve |
| CN108036062B (en) * | 2017-11-14 | 2019-11-12 | 凯喜姆阀门有限公司 | A kind of high pressure eccentric-butterfly-valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20110427 |