CN102384312A - Seal valve with no-wear helical surface - Google Patents
Seal valve with no-wear helical surface Download PDFInfo
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- CN102384312A CN102384312A CN2011103306212A CN201110330621A CN102384312A CN 102384312 A CN102384312 A CN 102384312A CN 2011103306212 A CN2011103306212 A CN 2011103306212A CN 201110330621 A CN201110330621 A CN 201110330621A CN 102384312 A CN102384312 A CN 102384312A
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- valve
- spool
- valve seat
- valve body
- seal
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Abstract
The invention discloses a seal valve with a no-wear helical surface, belonging to the technical field of valves. The main points of the seal valve are as follows: the seal valve comprises a valve body; the valve body is provided with a medium inlet and a medium outlet; a valve core and a valve base are movable arranged in the valve body, wherein when the valve core and the valve base are closed, the contour line of the transverse section of the contact face of the valve core and valve base is part of a same constant speed spiral line; when the valve core and the valve base are closed, the valve core rotates outward along the constant speed spiral line, the valve core is disengaged from the valve base, and the valve is opened; and when the valve core is disengaged from the valve base, the valve core rotates inward along the constant speed spiral line, the valve core and the valve base form a contact seal, and the valve is closed. The invention aims at providing a seal valve with a no-wear helical surface, which has a simple structure, small volume and high sealing reliability, and the seal valve is used for controlling the medium flowing in a pipeline.
Description
Technical field
The present invention relates to a kind of valve, more particularly, relate in particular to a kind of nothing wearing and tearing helicoid sealed valve.
Background technique
Valve is flowing of medium in the controlling plumbing fixtures through movable agency, and modal is to drive the spool rotation or go up and down to reach the switch purpose through applied moment.Therefore, the reliability of valve seal is most important performance.The perfect condition of valve core movement is: (1) when valve is in closed condition, and the seal pressure of sealing pair evenly and keep designing requirement; (2) hope that again the sealing surface of being close to each other can separate in advance during Open valve, and then rotation, with the wearing and tearing of avoiding sealing surface with reduce and open moment.The state of above-mentioned (1) than what be easier to realize, just can reach as long as improve the accuracy of manufacturing of valve sealing face often.But to the state of (2) with regard to difficult to realize, the invention provides the reliable method of head it off.
Ball valve, butterfly valve, stopcock all come the control valve switch through rotational valve core; Sealing surface is respectively sphere, conical surface or cylndrical surface; The motion sealing surface is close to stationary seal face all the time and is done relative movement in the process of switch, and moment of torsion is bigger when therefore opening and closing, and sealing surface also is prone to damage because of friction; Contain in conveying in the pipeline of granule mediums such as dust, the working life of valve is then shorter.In order to address the above problem, people are corresponding to improve, as orbit ball valve, bracing type ball valve, double eccentric butterfly valve, three eccentric butterfly valve, lifting type stopcock or the like have occurred.These improve all is in order to alleviate the friction of sealing surface when the switch valve, thereby reduces to operate moment of torsion, prolongs the working life of valve.But all there is narrow limitation in these improvement, though certain effect is arranged, have also brought new defective simultaneously.As comparing with original valve, it is more complicated that structure becomes, and number of spare parts increases, and the manufacturing process difficulty is big, precision is high, has increased manufacture cost.
In sum, guarantee that valve closing puts in place, except that guaranteeing the part accuracy of manufacturing, realize the even and maintenance designing requirement of seal pressure of sealing pair, be the key of valve seal.How applicating energy-saving, improve working life of valve fast, reliably; The focus of problem is how to realize that valve can let in rotary seal when opening motion sealing surface and stationary seal face are instantaneous to be separated; Valve is when rotary seal is to closed position when closing; Motion sealing surface and stationary seal face just fit tightly, thereby realize the frictionless valve opening and closing.The present invention is exactly in order to address this problem and realize purpose.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, volume is little and sealing reliability is higher nothing wearing and tearing helicoid sealed valve.
Technological scheme of the present invention is achieved in that a kind of nothing wearing and tearing helicoid sealed valve; Comprise valve body; On valve body, be provided with medium inlet and media outlet; In valve body, be movably equipped with spool and valve seat, the cross section profile line of contacting part when wherein said spool and valve seat are closed is the part of same constant velocity spiral; Spool was along the constant velocity spiral inner rotary when spool and valve seat were closed, and spool and valve seat break away from, valve open; Spool was along rotating in the constant velocity spiral when spool and valve seat broke away from, and spool and valve seat form contact seal, valve closing.
In the above-mentioned nothing wearing and tearing helicoid sealed valve, described valve seat is positioned at the valve body middle part, and described spool is arranged in the valve seat, and valve seat cooperates the formation sealing surface with spool.
In the above-mentioned nothing wearing and tearing helicoid sealed valve, be provided with cavity in the described valve body, cavity respectively with medium inlet and media outlet conducting, described spool is arranged in the cavity, described valve seat is arranged on the valve body of medium inlet or media outlet periphery; Spool cooperates the formation sealing surface with valve seat.
In the above-mentioned nothing wearing and tearing helicoid sealed valve, described spool is made up of bearing and the Sealing that is arranged on the bearing, and Sealing cooperates the formation sealing surface with media outlet; The outer surface of described Sealing is a sphere, and the outer contour of the cross section of sealing part is positioned on the constant velocity spiral.
In the above-mentioned nothing wearing and tearing helicoid sealed valve, the overall structure that described valve body and valve seat are formed in one.
After the present invention adopts said structure; At first valve body adopts the constant velocity spiral principle with cooperating of spool, realizes the nothing wearing and tearing of switching process, forms comparatively desirable sealing effect; When spool court turns clockwise; Can realize the disengaging of spool and valve body surface of contact in the moment of valve opening, have and do not have friction and the little advantage of moment.Secondly, after the employing constant velocity spiral principle, only need in valve body, directly process a spiral camber that generates by constant velocity spiral; Like this can be so that valve seat and valve body can be one-body molded, be split up into two parts with the sealing surface and the valve body of conventional valves, have the difference of essence; This structure has increased the rigidity of sealing surface greatly; Guarantee that under high pressure sealing surface is not prone to distortion yet, have constant seal pressure, improve the limit sealing reliability; Avoided again that medium or foreign material are assembled, crystallization in traditional valve seat and the space between the valve body, influenced the working life of valve; At last, owing to adopt the constant velocity spiral principle, spool can be removed the dust and dirt on the sealing surface automatically when being rotated counterclockwise, and can the automatic compensation sealing function, makes obtain prolonging the working life of valve.The present invention is applicable to the valve of rotary switches such as ball valve, butterfly valve, stopcock, and it is little to have an open and close torque, and seal pressure is even, and sealing surface does not have the advantage of wearing and tearing.Be suitable for industrialized mass production.
Description of drawings
Below in conjunction with the embodiment in the accompanying drawing the present invention is done further detailed description, but do not constitute any restriction of the present invention.
Fig. 1 is the structural representation of the specific embodiment of the invention 1;
Fig. 2 is one of user mode reference drawing of Fig. 1;
Fig. 3 be Fig. 1 the user mode reference drawing two;
Fig. 4 is the structural representation of the specific embodiment of the invention 2;
Fig. 5 is one of user mode reference drawing of Fig. 4;
Fig. 6 be Fig. 4 the user mode reference drawing two.
Among the figure: valve body 1, medium inlet 1a, media outlet 1b, spool 2, bearing 2a, Sealing 2b, valve seat 3, cavity 4.
Embodiment
Consult Fig. 1 to shown in Figure 3; A kind of nothing wearing and tearing helicoid sealed valve of the present invention; Comprise valve body 1, on valve body 1, be provided with medium inlet 1a and media outlet 1b, in valve body 1, be provided with spool 2 and valve seat 3; The cross section profile line of contacting part when described spool 2 and valve seat 3 are closed is the part of same constant velocity spiral, and promptly the contacted part of inner outline of corresponding cross section all is positioned on same the constant velocity spiral on the outer contour of spool 2 cross sections and the valve body 1; Spool 2 is along the constant velocity spiral inner rotary when spool 2 and valve seat 3 closures, and spool 2 breaks away from valve open with valve seat 3; Spool 2 was along rotating in the constant velocity spiral when spool 2 broke away from valve seat 3, and spool 2 forms contact seal, valve closing with valve seat 3.Particularly; Valve seat 3 in the present embodiment is positioned at valve body 1 middle part; Described spool 2 is arranged in the valve seat 3; Valve seat 3 cooperates with spool 2 and forms sealing surface, and the contact surface hardness of part of valve seat 3 and spool 2 can adopt material different and processing technology according to use occasion, as selects supersonic spray coating Tungsten carbite, hard chromium plating, surfacing nickel-base alloy, sealing surfaces treatment technology such as plasma nitrided for use.Then can select for use polytetrafluoroethylene PTFE, contraposition polyphenyl PPL, nylon etc. to process valve body 1 for soft seal according to operating mode; Spool 2 in the present embodiment is in full-gear toward the clockwise direction during half-twist, and spool 2 is in sealing state during towards half-twist counterclockwise.The mounting type of spool 2 all is to be fixed on the valve body 1 through transmission shaft with traditional identical, all does sealing between the contacting part of transmission shaft and valve body 1, abrasionproof is handled, and O-ring seal and abrasionproof cushion rubber promptly are set; Simultaneously on the transmission shaft in valve body 1 outside, spanner is set, the Convenient switch valve.
Consult Fig. 4 to shown in Figure 6, a kind of nothing wearing and tearing helicoid sealed valve of the present invention comprises valve body 1; On valve body 1, be provided with medium inlet 1a and media outlet 1b; In valve body 1, be provided with spool 2 and valve seat 3, in valve body 1, be provided with cavity 4, cavity 4 respectively with medium inlet 1a and media outlet 1b conducting; Described spool 2 is arranged in the cavity 4, and described valve seat 3 is arranged on the valve body 1 of medium inlet 1a or media outlet 1b periphery; Spool 2 cooperates the formation sealing surface with valve seat 3.Particularly, the spool 2 in the present embodiment is made up of bearing 2a and the Sealing 2b that is arranged on the bearing 2a, and Sealing 2b cooperates the formation sealing surface with media outlet 1b; The outer surface of described Sealing 2b is a sphere, and the outer contour of the cross section of sealing part 2b is positioned on the constant velocity spiral.
The present invention is applicable to the valve of rotary switches such as ball valve, butterfly valve, stopcock, and it is little to have an open and close torque, and seal pressure is even, and sealing surface does not have the advantage of wearing and tearing.Be suitable for industrialized mass production.
More than the technological scheme that the embodiment of the invention provided has been carried out detailed introduction; Used concrete example among this paper the principle and the mode of execution of the embodiment of the invention are set forth, above embodiment's explanation only is applicable to the principle that helps to understand the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the embodiment of the invention, the part that on embodiment and application area, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (5)
1. one kind is not had wearing and tearing helicoid sealed valve; Comprise valve body (1); On valve body (1), be provided with medium inlet (1a) and media outlet (1b); In valve body (1), be provided with spool (2) and valve seat (3), it is characterized in that, the cross section profile line of contacting part when described spool (2) and valve seat (3) are closed is the part of same constant velocity spiral; Spool (2) was along the constant velocity spiral inner rotary when spool (2) and valve seat (3) were closed, and spool (2) breaks away from valve open with valve seat (3); Spool (2) was along rotating in the constant velocity spiral when spool (2) broke away from valve seat (3), and spool (2) forms contact seal, valve closing with valve seat (3).
2. nothing wearing and tearing helicoid sealed valve according to claim 1 is characterized in that described valve seat (3) is positioned at valve body (1) middle part, and described spool (2) is arranged in the valve seat (3), and valve seat (3) cooperates the formation sealing surface with spool (2).
3. nothing wearing and tearing helicoid sealed valve according to claim 1; It is characterized in that; Be provided with cavity (4) in the described valve body (1); Cavity (4) respectively with medium inlet (1a) and media outlet (1b) conducting, described spool (2) is arranged in the cavity (4), described valve seat (3) is arranged on the peripheral valve body (1) of medium inlet (1a) or media outlet (1b); Spool (2) cooperates the formation sealing surface with valve seat (3).
4. nothing according to claim 3 wearing and tearing helicoid sealed valve is characterized in that described spool (2) is made up of bearing (2a) and the Sealing (2b) that is arranged on the bearing (2a), and Sealing (2b) cooperates the formation sealing surface with media outlet (1b); The outer surface of described Sealing (2b) is a sphere, and the outer contour of the cross section of sealing part (2b) is positioned on the constant velocity spiral.
5. according to the arbitrary described nothing wearing and tearing helicoid sealed valve of claim 1 to 4, it is characterized in that the overall structure that described valve body (1) and valve seat (3) are formed in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103306212A CN102384312A (en) | 2011-10-26 | 2011-10-26 | Seal valve with no-wear helical surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103306212A CN102384312A (en) | 2011-10-26 | 2011-10-26 | Seal valve with no-wear helical surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102384312A true CN102384312A (en) | 2012-03-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103306212A Pending CN102384312A (en) | 2011-10-26 | 2011-10-26 | Seal valve with no-wear helical surface |
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| Country | Link |
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| CN (1) | CN102384312A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028093A (en) * | 2021-03-29 | 2021-06-25 | 金昌道 | Eccentric valve and application system thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173715A (en) * | 2007-03-08 | 2008-05-07 | 潘世永 | Sealing structure of rotating wedge-type valve |
| WO2010085096A1 (en) * | 2009-01-21 | 2010-07-29 | 프리시스 주식회사 | Butterfly valve device |
| US20110084226A1 (en) * | 2009-10-12 | 2011-04-14 | Honeywell International Inc. | Full straight-shaft sealing butterfly valve |
| CN201802904U (en) * | 2010-09-10 | 2011-04-20 | 上海高中压阀门股份有限公司 | Improved ball valve |
| CN201875176U (en) * | 2010-03-29 | 2011-06-22 | 上海美科阀门有限公司 | Novel spherical ball valve |
| CN202349243U (en) * | 2011-10-26 | 2012-07-25 | 广东明珠流体机械有限公司 | Abrasion-free sealing valve with spiral face |
-
2011
- 2011-10-26 CN CN2011103306212A patent/CN102384312A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173715A (en) * | 2007-03-08 | 2008-05-07 | 潘世永 | Sealing structure of rotating wedge-type valve |
| WO2010085096A1 (en) * | 2009-01-21 | 2010-07-29 | 프리시스 주식회사 | Butterfly valve device |
| US20110084226A1 (en) * | 2009-10-12 | 2011-04-14 | Honeywell International Inc. | Full straight-shaft sealing butterfly valve |
| CN201875176U (en) * | 2010-03-29 | 2011-06-22 | 上海美科阀门有限公司 | Novel spherical ball valve |
| CN201802904U (en) * | 2010-09-10 | 2011-04-20 | 上海高中压阀门股份有限公司 | Improved ball valve |
| CN202349243U (en) * | 2011-10-26 | 2012-07-25 | 广东明珠流体机械有限公司 | Abrasion-free sealing valve with spiral face |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028093A (en) * | 2021-03-29 | 2021-06-25 | 金昌道 | Eccentric valve and application system thereof |
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Application publication date: 20120321 |