CN201155587Y - Sealing face wear-proof hard seal ball valve - Google Patents
Sealing face wear-proof hard seal ball valve Download PDFInfo
- Publication number
- CN201155587Y CN201155587Y CNU2008200325060U CN200820032506U CN201155587Y CN 201155587 Y CN201155587 Y CN 201155587Y CN U2008200325060 U CNU2008200325060 U CN U2008200325060U CN 200820032506 U CN200820032506 U CN 200820032506U CN 201155587 Y CN201155587 Y CN 201155587Y
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- valve
- ball
- seat
- valve rod
- valve seat
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Abstract
The utility model provides a hard sealing ball valve, the sealing face of which is free of abrasion, comprising a valve body, a valve cap, a valve seat, a valve ball and a valve stem; the valve ball with a through hole is arranged in the valve body; the upper end of the valve ball is connected with the valve stem and the transmission mechanism of the valve stem and the valve ball; the lower end of the valve ball is provided with a guide pin; the left valve cap and the right valve cap of a flow passage are arranged on both sides of the valve body; the left valve seat and the right valve seat are arranged respectively in the left valve cap and the right valve cap and on the both sides of the valve ball; a valve seat spring is arranged on the outer end of the valve seat; a sealing ring is arranged between the valve seat and the valve cap; a bearing surface contacted with the surface of the valve ball is respectively arranged on the left valve cap and the right valve cap; the surface of the valve ball is provided with a spiral curved tooth groove and a sealing face invaginated to the surface of the valve ball; the end surfaces of the left valve seat and the right valve seat are provided respectively with the corresponding spiral curved tooth groove and the sealing face invaginated to the end surface of the valve seat. The hard sealing ball valve has the advantages of the simple structure, high temperature resistance, high pressure resistance and good sealing property so as to prevent the ball valve from the abrasion in the course of opening and closing effectively, thereby improving the operational reliability of the ball valve and prolonging the service life of the ball valve.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of sealing face wear-proof hard seal ball valve.
Background technique
At present, ball valve has been widely used in the industries such as oil, chemical industry, electric power, metallurgy, papermaking.Conventional ball valve generally adopts soft seal, owing to be subjected to the restriction of sealing material, its Applicable temperature scope is little, high temperature resistant, high pressure and corrosivity are low, working life is shorter, adopts high parameter, the high-performance ball valve special operation condition condition as open-shut device for need, as: occasions such as ore pulp, lime-ash, dust, then can't satisfy, thereby then adopt hard seal ball valve.Existing hard seal ball valve is made up of valve body, valve gap, valve ball, valve seat and valve rod usually, and the valve ball that drives its lower end by rotation valve rod during use rotates, and makes through hole on the valve ball corresponding with the runner of valve or stagger, thus the closure or openness of realization ball valve.Because valve ball produces friction with valve seat in rotation process, serious wear easily causes leakage, has reduced the functional reliability of ball valve, has shortened the working life of ball valve.Although also have or not the wearing and tearing ball valve to come out at present, its structure is complicated, and it is very not convenient to use, keep in repair.
The model utility content
For overcoming the deficiencies in the prior art part, the utility model provides between a kind of rational in infrastructure, valve ball sealing surface and the sealing surface of seat does not have wearing and tearing, long service life, use and sealing face wear-proof hard seal ball valve easy to maintenance, and high temperature resistant, high pressure, good seal performance.
The technological scheme that its technical problem that solves the utility model adopts is: comprise valve body, valve gap, valve seat, valve ball and valve rod, be provided with the valve ball of through hole in the valve body, the upper end of valve ball links to each other with valve rod and valve rod valve ball driving mechanism, guide finger is equipped with in the lower end of valve ball, and the left and right valve gap that has runner is equipped with in the both sides of valve body; Left and right valve seat is loaded in the left and right valve gap respectively, the both sides of valve ball, and seating spring is equipped with in the outer end of valve seat, is provided with seal ring between valve seat and the valve gap; Left and right valve gap is equipped with and the contacted supporting surface of ball surface; It is characterized in that: the surface of valve ball is provided with the sealing surface of spiral alveolar and recessed ball surface, is respectively equipped with the sealing surface of corresponding spiral alveolar and recessed valve seat end face at the end face of left and right valve seat.
Above-mentioned by valve rod valve ball driving mechanism that outer valve rod, cam, semi-circle gear constituted, the lower end of valve rod is placed in the outer valve rod, valve rod is provided with the valve rod flat key, outer valve rod is provided with outer valve rod flat key, the lower end of valve rod is provided with cam and semi-circle gear, and the lower end of cam contacts with end curved surface on the rotating semi-circle gear, and semi-circle gear is meshed with the driving cog of valve ball upper end.
The spiral alveolar of above-mentioned valve ball and valve base surface is the continuous spiral alveolar of ring-type.
Above-mentioned seal ring is wavy metal cast or metal ring RunddichtringO.
Bottom land at above-mentioned valve ball spiral alveolar is provided with out dirty through hole.
The groove depth of the spiral alveolar on above-mentioned valve seat and the valve ball is recessed more than 2 times of the degree of depth of valve ball sealing surface, sealing surface of seat.Can guarantee ball valve like this in the open and close process, valve ball sealing surface, sealing surface of seat are fitted fully, reach desirable sealing effect.
The utility model is rational in infrastructure, has guaranteed that effectively ball valve sealing surface in the open and close process realize not to have wearing and tearing, thereby has improved the functional reliability of ball valve, has prolonged the working life of ball valve, and high temperature resistant, high pressure, good seal performance.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is for the spiral alveolar of valve ball in the utility model and valve seat screws in mutually, the structural representation of sealing surface fit-state;
Fig. 3 is the structural representation of valve ball in the utility model;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the expansion schematic representation of spiral alveolar among Fig. 4;
Fig. 6 is the structural representation of right valve seat in the utility model;
Fig. 7 is the left view of Fig. 6;
Fig. 8 is that spiral alveolar launches schematic representation among Fig. 7;
Fig. 9 is the structural representation of valve rod valve ball driving mechanism in the utility model.
Among the figure: 1 is left valve gap, 2 is right valve gap, 3 is valve body, 4 is valve ball, 5 is valve rod, 6 is valve rod valve ball driving mechanism, 7 is left valve seat, 8 is right valve seat, 9 and 10 is seating spring, 11 and 12 is seal ring, 13 is guide finger, 14 and 17 is the valve ball spiral alveolar, 18 and 15 is the valve ball sealing surface, 19 is left valve seat spiral alveolar, 16 is right valve seat spiral alveolar, 20 is right sealing surface of seat, 21 is left sealing surface of seat, 22 is right valve gap supporting surface, 23 is left valve gap supporting surface, 24 is driving cog, 25 is guiding groove, 26 is the valve rod cam, 27 is the valve rod flat key, 28 is outer valve rod, 29 is outer valve rod flat key, 30 is semi-circle gear.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
The utility model comprises valve body 3, valve gap 1,2, valve seat 7,8, valve ball 4 and valve rod 5, be provided with the valve ball 4 of through hole in the valve body 3, valve rod 5 and valve rod valve ball driving mechanism 6 are equipped with in the upper end of valve ball 4, and the lower end of valve ball 4 is provided with guiding groove 25, and guide finger 13 is housed in the guiding groove 25; The left and right valve gap 1,2 that has runner is equipped with in the both sides of valve body 3, left and right valve seat 7,8 is loaded on respectively in the left and right valve gap 1,2, and be positioned at the both sides of valve ball 4, seating spring 9,10 is equipped with in the end of left and right valve seat 7,8, is respectively equipped with O RunddichtringO 11,12 between left valve seat 7 and left valve gap 1, right valve seat 8 and the right valve gap 2; Above-mentioned O RunddichtringO 11,12 is wavy metal cast (or metal is a ring-like) seal ring.Left and right valve gap 1,2 is equipped with and valve ball 4 surperficial contacted supporting surfaces 23,22; The surface of valve ball 4 is provided with the sealing surface 18,15 on spiral alveolar 17,14 and recessed valve ball 4 surfaces, is respectively equipped with the sealing surface 21,20 on corresponding spiral alveolar 19,16 and recessed left and right valve seat 7,8 surfaces at the end face of left and right valve seat 7,8.The spiral alveolar 14,17,19,16 of above-mentioned valve ball 4 and left and right valve seat 7,8 end faces is the continuous spiral alveolar of ring-type, promptly on a surperficial circumference of valve ball 4, be divided into several spiral alveolars 17 (as shown in Figure 4) with the N degree, wherein A-B, D-E are the helicoid of spiral alveolar 17, B-C, E-F are the tooth top of spiral alveolar 17, just the surface of valve ball (as shown in Figure 5); Equally, on the end face circumference of right valve seat 8, surface corresponding to valve ball 4 is divided into several spiral alveolars 16 (as shown in Figure 7) with the N degree, and wherein A '-B ', D '-E ' is the helicoid of spiral alveolar 16, and B '-C ', E '-F ' is the tooth top (as shown in Figure 8) of spiral alveolar 16.Above-mentioned valve rod valve ball driving mechanism 6 is mainly constituted (valve rod valve ball driving mechanism 6 also can adopt in existing gear type driving mechanism, concavo-convex wheeled driving mechanism, worm-gear type driving mechanism, the Lever type driving mechanism a kind of) by outer valve rod 28, valve rod cam 26, semi-circle gear 30, the lower end of valve rod 5 is placed in the outer valve rod 28, valve rod 5 is provided with valve rod flat key 27, outer valve rod 28 is provided with outer valve rod flat key 29, when valve rod 5 rotations make valve rod flat key 27 to outer valve rod flat key 29 places, owing to be subjected to the effect of outer valve rod flat key 29, and make outer valve rod 28 also rotate thereupon.The lower end of valve rod 5 is provided with valve rod cam 26 and semi-circle gear 30, and the lower end of valve rod cam 26 contacts with end curved surface on the rotating semi-circle gear 30, and semi-circle gear 30 is meshed with the driving cog 24 of valve ball 4 upper ends.Bottom land at above-mentioned valve ball spiral alveolar 14,17 is provided with out dirty through hole, to remove dirt.The groove depth L of the spiral alveolar 14,17,19,16 on above-mentioned left and right valve seat 7,8 and valve ball 4 surfaces is valve ball sealing surface 18,15, left and right sealing surface of seat 21,20 recessed more than 2 times of degree of depth L '.Can guarantee ball valve like this in the open and close process, valve ball sealing surface 18 and 15 is fitted fully with left and right sealing surface of seat 21 and 20 respectively, reaches desirable sealing effect.
When opening ball valve, rotation valve rod 5, under 26 effects of valve rod cam, making semi-circle gear 30 drive valve ball 4 by valve ball driving cog 24 turns an angle along spiral alveolar direction (that is: Hand of spiral), left valve seat spiral alveolar 19, right valve seat spiral alveolar 16 are screwed out valve ball spiral alveolar 17,14, left sealing surface of seat 21, right valve seat close 20 are outwarded winding with valve ball sealing surface 18,15, valve rod flat key 27 and 29 lockings of outer valve rod flat key simultaneously, be rotated further the outer valve rod 28 of valve rod 5 drives and make valve ball 4 rotate 90 °, with valve opening along the valve flowing channel direction.When closing ball valve, counter-rotation valve rod 5, under 26 effects of valve rod cam, make semi-circle gear 30 drive valve ball 4 along spiral alveolar direction (being Hand of spiral) reverse rotation several angle by valve ball driving cog 24, valve rod flat key 27 and outer valve rod flat key 29 are oppositely locked simultaneously, being rotated further the outer valve rod 28 of valve rod 5 drives makes valve ball 4 rotate 90 ° along the valve flowing channel direction, in seating spring 9, make left valve seat spiral alveolar 19 under 10 the effect, right valve seat spiral alveolar 16 screws in valve ball spiral alveolar 17,14, make valve ball sealing surface 18,15 with left sealing surface of seat 21, right sealing surface of seat 20 screws, and reaches valve closing.Valve ball, sealing surface of seat are in not contact condition all the time in valve ball 4 rotation processes.Therefore, valve ball, sealing surface of seat do not produce wearing and tearing, can effectively guarantee the working life of valve, are the Updated products of common hard seal ball valve.
Claims (7)
1, sealing face wear-proof hard seal ball valve, comprise valve body, valve gap, valve seat, valve ball and valve rod, be provided with the valve ball of through hole in the valve body, the upper end of valve ball links to each other with valve rod and valve rod valve ball driving mechanism, guide finger is equipped with in the lower end of valve ball, and the left and right valve gap that has runner is equipped with in the both sides of valve body; Left and right valve seat is loaded in the left and right valve gap respectively, the both sides of valve ball, and seating spring is equipped with in the outer end of valve seat, is provided with seal ring between valve seat and the valve gap; Left and right valve gap is equipped with and the contacted supporting surface of ball surface; It is characterized in that: the surface of valve ball is provided with the sealing surface of spiral alveolar and recessed ball surface, is respectively equipped with the sealing surface of corresponding spiral alveolar and recessed valve seat end face at the end face of left and right valve seat.
2, sealing face wear-proof hard seal ball valve according to claim 1, it is characterized in that: above-mentioned by valve rod valve ball driving mechanism that outer valve rod, cam, semi-circle gear constituted, the lower end of valve rod is placed in the outer valve rod, valve rod is provided with the valve rod flat key, outer valve rod is provided with outer valve rod flat key, the lower end of valve rod is provided with cam and semi-circle gear, and the lower end of cam contacts with end curved surface on the rotating semi-circle gear, and semi-circle gear is meshed with the driving cog of valve ball upper end.
3, sealing face wear-proof hard seal ball valve according to claim 1 is characterized in that: the spiral alveolar on above-mentioned valve ball and the valve seat is the continuous spiral alveolar of ring-type.
4, sealing face wear-proof hard seal ball valve according to claim 1 is characterized in that: above-mentioned seal ring is wavy metal cast or metal ring RunddichtringO.
5, according to claim 1 or 3 described sealing face wear-proof hard seal ball valves, it is characterized in that: the bottom land at above-mentioned valve ball spiral alveolar is provided with out dirty through hole.
6, sealing face wear-proof hard seal ball valve according to claim 1 is characterized in that: the groove depth of the spiral alveolar on above-mentioned valve seat and the valve ball is recessed more than 2 times of the degree of depth of valve ball sealing surface, sealing surface of seat.
7, sealing face wear-proof hard seal ball valve according to claim 1 and 2 is characterized in that: valve rod valve ball driving mechanism is a kind of in gear type driving mechanism, concavo-convex wheeled driving mechanism, worm-gear type driving mechanism, the Lever type driving mechanism.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200325060U CN201155587Y (en) | 2008-02-05 | 2008-02-05 | Sealing face wear-proof hard seal ball valve |
| PCT/CN2009/000123 WO2009100648A1 (en) | 2008-02-05 | 2009-02-02 | A hard sealing ball valve having non-wearing sealing surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200325060U CN201155587Y (en) | 2008-02-05 | 2008-02-05 | Sealing face wear-proof hard seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201155587Y true CN201155587Y (en) | 2008-11-26 |
Family
ID=40103370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200325060U Expired - Lifetime CN201155587Y (en) | 2008-02-05 | 2008-02-05 | Sealing face wear-proof hard seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201155587Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009100648A1 (en) * | 2008-02-05 | 2009-08-20 | Xiaofeng Zhu | A hard sealing ball valve having non-wearing sealing surface |
| CN100590334C (en) * | 2008-02-05 | 2010-02-17 | 朱晓丰 | Sealing face wear-proof hard seal ball valve |
| CN102943894A (en) * | 2012-11-16 | 2013-02-27 | 五洲阀门有限公司 | Double-half ball static friction ball valve |
-
2008
- 2008-02-05 CN CNU2008200325060U patent/CN201155587Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009100648A1 (en) * | 2008-02-05 | 2009-08-20 | Xiaofeng Zhu | A hard sealing ball valve having non-wearing sealing surface |
| CN100590334C (en) * | 2008-02-05 | 2010-02-17 | 朱晓丰 | Sealing face wear-proof hard seal ball valve |
| CN102943894A (en) * | 2012-11-16 | 2013-02-27 | 五洲阀门有限公司 | Double-half ball static friction ball valve |
| CN102943894B (en) * | 2012-11-16 | 2014-12-03 | 五洲阀门有限公司 | Double-half ball static friction ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080205 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |