CN1318787C - Double sealing apparatus for valve closure member - Google Patents
Double sealing apparatus for valve closure member Download PDFInfo
- Publication number
- CN1318787C CN1318787C CNB2004100468643A CN200410046864A CN1318787C CN 1318787 C CN1318787 C CN 1318787C CN B2004100468643 A CNB2004100468643 A CN B2004100468643A CN 200410046864 A CN200410046864 A CN 200410046864A CN 1318787 C CN1318787 C CN 1318787C
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- valve
- slowly
- plate
- close
- quick closing
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- Expired - Fee Related
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Abstract
The present invention belongs to a sealing device closed in the valve stage, which relates to a double-seal device of a valve opening and closing member. The double-seal device of a valve opening and closing member comprises a valve rod, a slowly close valve plate, a slowly close soft seal, a slowly close hard seal, a slowly close soft seal surface, a slowly close hard seal surface, a small press plate, a quickly close valve plate, a quickly close soft seal, a quickly close hard seal, a large press plate, a quickly close soft seal surface, a quickly close hard seal surface, a valve seat, a valve body, etc., wherein the slowly close soft seal is arranged on the slowly close valve plate, and the small press plate and the slowly close soft seal are fastened on the slowly close valve plate by fastening screws. The slowly close valve plate, the slowly close soft seal and the small press plate are fastened on the valve rod together by nuts, the slowly close hard seal is welded on the slowly close valve plate, and the quickly close soft seal is arranged on the quickly close valve plate. The quickly close soft seal is pressed by the large press plate, and is fastened on the quickly close valve plate by screws, and the valve seat is arranged on the valve body, and is fastened by fastening screws. The double-seal device sealed in the two stages of a valve has the advantages of reliable seal and long service life.
Description
Technical field:
The invention belongs to a kind of valve stage closes seal arrangement, relates to a kind of Double Sealing Device of Discs for Valves.
Background technique:
Present valve seal generally adopts the soft seal of flexible materials such as rubber, and it is good that the hard sealing of hard materials such as stainless steel, copper, soft seal have deformation-compensated property, seal tight advantage, but soft sealing material compressive strength is low, easily damages by pressure, and the life-span is short; Hard sealing has the compressive strength height, the advantage that the life-span is long, but deformation-compensated poor performance, and the requirement on machining accuracy height, poorly sealed close, and be difficult to after the wearing and tearing repair.Also there is employing soft, hard two kinds of sealings match, it is good to make full use of the deformation-compensated property of soft seal, sealing is tight, hard sealing compressive strength height, the advantage that life-span is long, this soft or hard combination sealing arrangement has overcome both shortcomings, but this soft or hard combination sealing arrangement generally is when closing, hard sealing is worked earlier, close in formation and to cut off fluid and cause before and after the sealing after the pressure difference, utilize this pressure difference to drive soft seal again, make the soft seal formation secondary seal that plays a role, but this driving soft seal device generally is soft seal to be formed by some apertures and high voltage terminal fluid connection drive passage, and these holes are easily stopped up by foreign material in the liquid in flow of fluid and can not be driven soft seal, and soft seal was lost efficacy.
Summary of the invention:
The invention reside in design and close double-seal device a kind of two stages of valve, overcome the deficiency of above-mentioned form seal arrangement, and adopt fast, slow two valve plates with quick closing valve, two stages of closing close and reduce the liquid inertia impact force slowly.
The present invention solves its technical problem and adopts following technological scheme:
The present invention is by valve rod, seal ring, slowly close valve plate, slowly close soft seal, slowly close hard sealing, slowly close soft sealing face, slowly close hard sealing surface, slowly close the valve plate fastening screw trip bolt, quick closing valve valve plate fastening screw trip bolt, the valve seat fastening screw trip bolt, little pressing plate, nut, the quick closing valve valve plate, the quick closing valve soft seal, quick closing valve seals firmly, large plate, the quick closing valve soft sealing face, the hard sealing surface of quick closing valve, valve seat, valve body, the fast valve sleeve-board, the valve seat cover, discharge orifice is formed, slowly closing valve plate is contained on the valve rod by the hole cooperation, slowly close valve plate and seal ring is equipped with in the valve rod hole cooperation place, slowly closing soft seal is contained in and closes slowly on the valve plate, push down with little pressing plate and to close soft seal slowly and little pressing plate is reached close soft seal slowly and be fastened on and close slowly on the valve plate with closing the valve plate fastening screw trip bolt slowly, to close valve plate slowly with nut again, slowly close soft seal, little pressing plate together is fastened on the valve rod, close hard sealing closing slowly to be welded with on the valve plate slowly, the quick closing valve soft seal is housed on the quick closing valve valve plate, the quick closing valve soft seal is pushed down and be fastened on the quick closing valve valve plate with large plate with quick closing valve valve plate fastening screw trip bolt, the fast valve sleeve-board is contained on the quick closing valve valve plate, valve seat is contained on the valve body and uses the valve seat fastening screw trip bolt fastening, the valve seat middle part cooperates by the interference hole is equipped with the valve seat cover, valve rod passes the quick closing valve valve plate, and the intermediate throughholes of the intermediate throughholes of fast valve sleeve-board and the cover of the valve seat on the valve seat communicates.
The present invention with said structure is contained in the valve with two stage closing control functions can realize its function; when valve is in full-gear; slowly close the soft seal of pass slowly on the valve plate; hard sealing all with the quick closing valve valve plate on sealing surface do not contact; equally; quick closing valve soft seal on the quick closing valve valve plate; the hard sealing of quick closing valve does not all contact with sealing surface on the valve seat; the valve body inner fluid can and close Clearance Flow between valve plate and the quick closing valve valve plate slowly by gap between quick closing valve valve plate and the valve seat; when valve need be closed; at first the quick closing valve valve plate is slipped on the valve seat rapidly along valve rod; this moment, the fast valve soft seal contacted with quick closing valve soft sealing face on the valve seat; quick closing valve soft seal stress deformation seals; the hard sealing of quick closing valve that strengthens on the quick closing valve valve plate of back along with quick closing valve soft seal amount of deformation contacts with the hard sealing surface of quick closing valve on the valve seat; quick closing valve soft seal this moment and the hard sealing of quick closing valve seal simultaneously; and most pressure on the quick closing valve valve plate are born in the hard sealing of quick closing valve; make the quick closing valve soft seal only bear fraction pressure; the quick closing valve soft seal is protected; at this moment the valve body inner fluid can and close Clearance Flow between the valve plate slowly by discharge orifice on the quick closing valve valve plate and quick closing valve valve plate; this part impact that fluid inertia produces in the time of can reducing the valve body inner fluid owing to the pass valve of flowing; protection whole sealing device and valve body and with the safety of the external pipeline of valve body; then closing valve plate slowly slowly moves to the quick closing valve valve plate under the valve rod closing control; contact with sealing surface on the quick closing valve valve plate up to closing soft seal on the slow closing plate slowly; slowly closing soft seal seals; liquid is by severing fully in the valve body; can not flow; along with increasing, pressure closes the increasing of soft seal amount of deformation slowly; make that closing hard sealing slowly contacts with sealing surface on the quick closing valve valve plate; slowly close this moment to seal to bear firmly and close most pressure on the valve plate slowly, make that closing soft seal slowly is protected.
The invention reside in design and close double-seal device a kind of two stages of valve, overcome the deficiency of above-mentioned form seal arrangement, and adopt fast, slow two valve plates with quick closing valve, two stages of closing close slowly, have reduced the inertial impact force of liquid.
Description of drawings:
Fig. 1 is a full closing state overall construction drawing of the present invention.
Fig. 2 is a full-gear overall construction drawing of the present invention.
Fig. 3 is the quick closing valve soft seal of the present invention structure graph that works.
Fig. 4 concurs structure graph for soft, the hard sealing of quick closing valve of the present invention.
Fig. 5 closes the soft seal structure graph that works slowly for the present invention.
The structural drawing that Fig. 6 is used in the valve with two stage closing functions for the present invention.
Embodiment:
The present invention by valve rod 1, seal ring 2, slowly close valve plate 3, slowly close soft seal 5, slowly close hard sealing 6, slowly close soft sealing face 8, slowly close hard sealing surface 9, close that valve plate fastening screw trip bolt 4, quick closing valve fastening screw trip bolt 18, valve seat fastening screw trip bolt 23, little pressing plate 7, nut 10, quick closing valve valve plate 11, quick closing valve soft seal 13, quick closing valve seal 12 firmly slowly, large plate 16, quick closing valve soft sealing face 15, the hard sealing surface 14 of quick closing valve, valve seat 22, valve body 17, fast valve sleeve-board 20, valve seat cover 21, discharge orifice 19 form.
Slowly closing valve plate 3 is contained on the valve rod 1 by the hole cooperation, slowly close valve plate 3 and seal ring 2 is housed with cooperation place, valve rod 1 hole, slowly closing soft seal 5 is contained in and closes slowly on the valve plate 3, push down with little pressing plate 7 and to close soft seal 5 slowly and little pressing plate 7 is reached close soft seal 5 slowly and be fastened on and close slowly on the valve plate 3 with closing valve plate fastening screw trip bolt 4 slowly, to close valve plate 3 slowly with nut 10 again, slowly close soft seal 5, little pressing plate 7 together is fastened on the valve rod 1, close hard sealing 6 closing slowly to be welded with on the valve plate 3 slowly, quick closing valve soft seal 13 is housed on quick closing valve valve plate 11, quick closing valve soft seal 13 is pushed down and be fastened on the quick closing valve valve plate 11 with large plate 16 with quick closing valve valve plate fastening screw trip bolt 18, fast valve sleeve-board 20 is contained on the quick closing valve valve plate, valve seat 22 is contained on the valve body 17 and uses valve seat fastening screw trip bolt 23 fastening, valve seat 22 middle parts cooperate by the interference hole is equipped with valve seat cover 21, valve rod 1 passes on the quick closing valve valve plate 11, and the intermediate throughholes of the valve seat cover 21 on the intermediate throughholes of fast valve sleeve-board 20 and the valve seat 22 communicates.
The present invention with said structure is contained in the valve with two stage closing control functions can realize its function; when valve is in full-gear; slowly close the soft seal of pass slowly 5 on the valve plate 3; hard sealing 6 all with quick closing valve valve plate 11 on sealing surface 8; 9 do not contact; equally; quick closing valve soft seal 13 on the quick closing valve valve plate 11; the hard sealing 12 of quick closing valve all not with valve seat 22 on sealing surface 15; 14 contacts; valve body 17 inner fluids can and close Clearance Flow between valve plate 3 and the quick closing valve valve plate 11 slowly by gap between quick closing valve valve plate 11 and the valve seat 22; when valve need be closed; at first quick closing valve valve plate 11 is slipped to rapidly on the valve seat 22 along valve rod 1; this moment, fast valve soft seal 13 contacted with quick closing valve soft sealing face 15 on the valve seat 22; quick closing valve soft seal 13 stress deformations seal; along with strengthening the hard sealing of quick closing valve on the back quick closing valve valve plate 11 12, quick closing valve soft seal 13 amount of deformation contact with the hard sealing surface 14 of quick closing valve on the valve seat 22; the hard sealing 12 of quick closing valve soft seal 13 this moment and quick closing valve seals simultaneously; and most pressure on the quick closing valve valve plate 11 are born in the hard sealing 12 of quick closing valve; make quick closing valve soft seal 13 only bear fraction pressure; quick closing valve soft seal 13 is protected; at this moment valve body 17 inner fluids can and close Clearance Flow between the valve plate 3 slowly by discharge orifice on the quick closing valve valve plate 11 19 and quick closing valve valve plate 11; this part impact that fluid inertia produces in the time of can reducing valve body 17 inner fluids owing to the pass valve of flowing; protection whole sealing device and valve body 17 and with the safety of the external pipeline of valve body 17; then closing valve plate 3 slowly slowly moves to quick closing valve valve plate 11 under valve rod 1 closing control; contact with sealing surface 8 on the quick closing valve valve plate 11 up to closing soft seal 5 on the slow closing plate 3 slowly; slowly closing soft seal 5 seals; liquid is by severing fully in the valve body 17; can not flow; along with increasing, pressure closes the increasing of soft seal 5 amount of deformation slowly; make that closing hard sealing 6 slowly contacts with sealing surface 9 on the quick closing valve valve plate 11; slowly close hard sealing 6 this moment and bear and close most pressure on the valve plate 3 slowly, make that closing soft seal 5 slowly is protected.
Claims (1)
1, a kind of Double Sealing Device of Discs for Valves, by valve rod (1), seal ring (2), slowly close valve plate (3), slowly close soft seal (5), slowly close hard sealing (6), slowly close soft sealing face (8), slowly close hard sealing surface (9), slowly close valve plate fastening screw trip bolt (4), quick closing valve valve plate fastening screw trip bolt (18), valve seat fastening screw trip bolt (23), little pressing plate (7), nut (10), quick closing valve valve plate (11), quick closing valve soft seal (13), quick closing valve seals (12) firmly, large plate (16), quick closing valve soft sealing face (15), the hard sealing surface of quick closing valve (14), valve seat (22), valve body (17), fast valve sleeve-board (20), valve seat cover (21), discharge orifice (19) is formed, it is characterized in that closing slowly valve plate (3) is contained on the valve rod (1) by the hole cooperation, slowly close valve plate (3) and seal ring (2) is housed with valve rod (1) cooperation place, hole, slowly closing soft seal (5) is contained in and closes slowly on the valve plate (3), push down with little pressing plate (7) and to close soft seal (5) slowly and little pressing plate (7) is reached close soft seal (5) slowly and be fastened on and close slowly on the valve plate (3) with closing valve plate fastening screw trip bolt (4) slowly, use nut (10) will close valve plate (3) slowly again, slowly close soft seal (5), little pressing plate (7) together is fastened on the valve rod (1), close hard sealing (6) closing slowly to be welded with on the valve plate (3) slowly, quick closing valve soft seal (13) is housed on quick closing valve valve plate (11), quick closing valve soft seal (13) is pushed down and be fastened on the quick closing valve valve plate (11) with large plate (16) with quick closing valve valve plate fastening screw trip bolt (18), fast valve sleeve-board (20) is contained on the quick closing valve valve plate, it is last and fastening with valve seat fastening screw trip bolt (23) that valve seat (22) is contained in valve body (17), valve seat (22) middle part cooperates by the interference hole is equipped with valve seat cover (21), valve rod (1) passes quick closing valve valve plate (11), and the intermediate throughholes of the valve seat cover (21) on the intermediate throughholes of fast valve sleeve-board (20) and the valve seat (22) communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100468643A CN1318787C (en) | 2004-10-26 | 2004-10-26 | Double sealing apparatus for valve closure member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100468643A CN1318787C (en) | 2004-10-26 | 2004-10-26 | Double sealing apparatus for valve closure member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1605774A CN1605774A (en) | 2005-04-13 |
| CN1318787C true CN1318787C (en) | 2007-05-30 |
Family
ID=34763873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100468643A Expired - Fee Related CN1318787C (en) | 2004-10-26 | 2004-10-26 | Double sealing apparatus for valve closure member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1318787C (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4766933A (en) * | 1986-06-20 | 1988-08-30 | Societe Anonyme Dite: Abx | Two or three way microelectrovalve with twin sealing membrane |
| CN2245695Y (en) * | 1995-10-16 | 1997-01-22 | 杨绍贵 | Double-sealing plate sluice valve |
| EP0928915A2 (en) * | 1998-01-12 | 1999-07-14 | Wilhelm Guth GmbH & Co. KG | Double-seat valve with leak control |
| CN2495859Y (en) * | 2001-08-07 | 2002-06-19 | 湖南泵阀制造有限公司 | Soft/hard combination type sealing means for valve closure member |
| CN2557763Y (en) * | 2002-06-28 | 2003-06-25 | 浙江超达阀门有限公司 | Hard-soft double-seal ball valve |
| US6676047B1 (en) * | 1999-07-02 | 2004-01-13 | Alfa Laval A/S | Double sealing valve |
| CN2602237Y (en) * | 2003-02-13 | 2004-02-04 | 龚福秋 | Piston type double packing stop valve |
-
2004
- 2004-10-26 CN CNB2004100468643A patent/CN1318787C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4766933A (en) * | 1986-06-20 | 1988-08-30 | Societe Anonyme Dite: Abx | Two or three way microelectrovalve with twin sealing membrane |
| CN2245695Y (en) * | 1995-10-16 | 1997-01-22 | 杨绍贵 | Double-sealing plate sluice valve |
| EP0928915A2 (en) * | 1998-01-12 | 1999-07-14 | Wilhelm Guth GmbH & Co. KG | Double-seat valve with leak control |
| US6676047B1 (en) * | 1999-07-02 | 2004-01-13 | Alfa Laval A/S | Double sealing valve |
| CN2495859Y (en) * | 2001-08-07 | 2002-06-19 | 湖南泵阀制造有限公司 | Soft/hard combination type sealing means for valve closure member |
| CN2557763Y (en) * | 2002-06-28 | 2003-06-25 | 浙江超达阀门有限公司 | Hard-soft double-seal ball valve |
| CN2602237Y (en) * | 2003-02-13 | 2004-02-04 | 龚福秋 | Piston type double packing stop valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1605774A (en) | 2005-04-13 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070530 Termination date: 20131026 |