CN104500775A - Erosion resistant ball valve - Google Patents
Erosion resistant ball valve Download PDFInfo
- Publication number
- CN104500775A CN104500775A CN201410848016.8A CN201410848016A CN104500775A CN 104500775 A CN104500775 A CN 104500775A CN 201410848016 A CN201410848016 A CN 201410848016A CN 104500775 A CN104500775 A CN 104500775A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- seal
- valve rod
- spool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Sliding Valves (AREA)
Abstract
The invention provides an erosion resistant ball valve. The ball valve comprises a valve body, a valve rod is arranged in the valve body, a valve core is arranged on the valve rod, the valve rod is fixedly connected with the valve core, and a valve seat is further arranged in the valve body. The valve seat is in seal fit with the valve core, and a spring washer and a seal adjusting block are arranged behind the valve seat. The valve seat is in contact with the valve core, a valve seat soft seal part and a valve seat hard seal part are arranged on a valve seat and valve core contacting seal face, the spring washer is arranged between the valve seat and the seal adjusting block, the seal adjusting block and the valve body are in threaded connection, certain radial space is left between the valve seat and the valve body. By means of the ball valve, the usual single hard seal or soft seal is changed into the part soft seal or hard seal, and accordingly, the valve seal performance is good; on the seal portion, the hard seal is arranged on the outer circle of the valve seat, and the soft seal is arranged on the inner circle of the valve seat.
Description
Technical field
The invention belongs to switch, valve arrangement technical field, especially relate to a kind of erosion resistance ball valve.
Background technique
Ball valve is widely used in the industries such as thermoelectricity, cement, chemical industry, plastics, grain and food.Work the ball valve kind of blocking medium in the duct a lot, have hard seal eccentric semi ball valve and soft seal eccentric half-ball valve.In a kind of sealing configuration as shown in Figure 3, the sealing of hard seal eccentric semi ball valve is metal to metal, and product has cutting function, but has certain leakage rate during sealing.The sealing of soft seal eccentric half-ball valve is metal pair rubber, and product does not have cutting function, but sealing can reach zero leakage.Hard seal ball valve can foreign material in cutting out pipeline on pipeline, and be that pipeline is smooth and easy, inflow-rate of water turbine is large, but cause certain leakage rate due to its sealing configuration, can cause the loss of the energy.Soft sealing ball valve can play zero leakage on pipeline, but it can not foreign material in cutting out pipeline, and in pipeline, foreign material are too much, and pipeline can be caused not smooth.Meanwhile, no matter as sealed or all can causing wearing and tearing after being firmly sealed in long-term use, thus valve can not be sealed completely, the seal arrangement that must more renew.
Summary of the invention
The problem to be solved in the present invention is the problem overcoming prior art, provides a kind of soft seal and firmly seals simultaneous valve, valve also will be allowed more wear-resistant simultaneously, can also continue to use after valve wear through adjustment.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of erosion resistance ball valve, comprise valve body, also valve rod is provided with in described valve body, described valve rod is provided with spool, valve rod is fixedly connected with spool, describedly in valve body, be also provided with valve seat, described valve seat coordinates with seal spool, also spring washer is provided with after described valve seat, sealing regulating block, described valve seat contacts with spool, what contact with spool at valve seat is also provided with valve seat soft seal and the hard Sealing of valve seat, described spring washer is arranged between valve seat and sealing regulating block, sealing regulating block is threaded with being also provided with between valve body, certain radial clearance is had between described valve seat and valve body.
Concrete, described valve rod comprises upper valve rod and lower valve rod, and described upper valve rod stretches out outside valve body, between upper valve rod and valve body, be provided with sealing clamp, and described lower valve rod is coaxial with upper valve rod, is also provided with bottom in the outer junction of lower valve rod and valve body.
Concrete, described upper valve rod is also provided with worm box, and described upper valve rod is arranged on the output shaft of worm box.
Concrete, the shape of described valve body and spool is the housing of a semi-round ball, is also respectively arranged with junction surface, junction surface is also provided with attachment hole in the top and the bottom of semi-round ball housing, and the center of circle of attachment hole and the center of circle of valve rod are on the same line.
Concrete, the described valve seat contacted with spool is arc surface, and described valve seat soft seal and the hard Sealing of valve seat are all arranged on the arc surface of valve seat.
The advantage that the present invention has and good effect are: a kind of erosion resistance ball valve, by firmly to be sealed by common substance or soft seal is replaced by the soft seal of part and the hard sealing of part, thus make the sealability of valve better.At hermetic unit, by firmly sealing the outer ring being arranged on valve seat, soft seal is arranged on the inner ring of valve seat.Meanwhile, the ratio arranged by the internal diameter of soft seal seals greatly firmly, because soft seal can be compressed, so just can first compress when valve is just brought into use and soft seal of wearing and tearing.Hard sealing wear with compression after soft seal there is same inner diameter time, soft seal will be worked with hard sealing simultaneously, reach best sealing effect.In the valve seat of valve, valve seat is float design, and sealing effect is not the radial position by regulating valve seat when feeling quite pleased in too much wearing and tearing to make hard sealing and soft seal, thus the sealing of valve seat and spool is reached desirable effect.Its concrete setting is: valve seat is arranged in valve body, valve body and valve seat precision-fit, and valve seat can slide in valve body, after valve seat, be provided with spring washer, also be provided with the sealing regulating block of adjustment spring washer after spring washer, sealing regulating block is threaded with adopting between valve body.Like this, due to the effect of spring, sealing regulating block is regulated to get final product the sealing tightness degree of regulating valve seat and spool from the different cooperation positions of the helical thread portion of valve body.
Accompanying drawing explanation
Fig. 1 is erosion resistance ball-valve structure schematic diagram;
Fig. 2 is spool part-structure schematic diagram;
Fig. 3 is original ball-valve structure schematic diagram.
In figure: 1 valve body, 2 bottoms, 3 spools, 4 lower valve rods, 5 Sealings, 6 upper valve rods,
7 spring washers, 8 sealing regulating blocks, 9 valve seat soft seals, the hard Sealing of 10 valve seat,
11 gaps, 12 screw threads, 13 valve seats.
Embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention are elaborated.
A kind of erosion resistance ball valve as shown in Figure 1, comprises valve body 1.Valve body 1 is a pipe fitting being similar to T-type structure.On the horizontal pipeline of valve body 1 inside, it is the circulation passage of object.In the Vertical Channel of valve body 1 inside, for arranging the passage of valve rod.Be provided with circular cavity at the circulation passage of object and the junction of valve stem passage, be provided with spool 3 in circular cavity, spool 3 can 360 degree of rotations arbitrarily in circular spheroid.The shape of spool 3 is semicircular housings.On valve body 1 circulation passage in valve export direction, be also provided with valve seat 13.Spring washer 7, sealing regulating block 8 is also provided with after valve seat 13.Valve seat 13 is also provided with the circular arc concave surface matched with spool 3 on the sealing surface contacted with spool 3.Circular arc concave surface is provided with the hard Sealing 10 of valve seat and valve seat soft seal 9, valve seat soft seal 9 and the hard Sealing 10 of valve seat divide setting equally on circular arc concave surface.The hard Sealing of valve seat 10 is arranged on the larger position of circular arc concave surface relative current circulation passage diameter, and valve seat soft seal 9 is arranged on the less position of circular arc concave surface relative current circulation passage diameter.The thickness that the thickness that valve seat soft seal 9 is arranged on circular arc concave surface is arranged on circular arc concave surface slightly larger than the hard Sealing 10 of valve seat, that is: be slightly less than the radius from the spool 3 housing center of circle to the hard Sealing 10 of valve seat from the spool 3 housing center of circle to the radius of valve seat soft seal 9.Such setting makes valve body 1 first be sealed separately by valve seat soft seal 9 when just starting to contact, and valve seat soft seal 9 has certain compressible performance simultaneously.Hard Sealing 10 and the valve seat soft seal 9 after compressing seal simultaneously with valve seat again to may wear to a timing at the valve seat soft seal 9 on top layer.Such mode not only makes the sealing of valve body 1 more durable, and the sealing of valve seat 13 and spool 3 also can be made more tight.On valve seat 13 with valve body 1 junction surface, also comprise a projection, valve seat 13 is also provided with the step identical with height of projection.Certain gap 11 is had, so that adjustment in the future when using for the first time between the projection and the step of valve seat 13 of valve body 1.The position of valve seat 13 in valve body 1 can be carried out spacing by such setting.Two step surfaces contacted with valve body 1 at valve seat 13 are all provided with seal ring 5, make spool 3 in complete hermetic situation in circulation passage object can not flow away from the gap between valve body 1 and valve seat 13.Also be provided with sealing regulating block 8 in circulation passage after valve seat 13, the circumferential surface of sealing regulating block 8 is provided with screw thread 12.Meanwhile, in the circulation passage contacted with sealing regulating block 8, be also provided with screw thread 12, the sealing screw thread 12 of regulating block 8 matches with the screw thread 12 in circulation passage.When the hard Sealing 10 of the valve seat of valve seat 13 and valve seat soft seal 9 may wear to a certain amount of, sealing defective tightness between spool 3 and valve seat 13, now only need adjust the cooperation position of the screw thread 12 of sealing regulating block 8 and valve body 1, thus extrude valve seat 13 by spring washer 7, make the hard Sealing of the valve seat of valve seat 13 10 and coordinating between valve seat soft seal 9 with spool 3 again become tight.
The upper and lower surface of spool 3 semicircle housing is also respectively arranged with junction surface, junction surface is also provided with attachment hole, the center of circle of attachment hole and the center of circle of valve rod are on the same line.Valve rod also comprises upper valve rod 6 and lower valve rod 4, and the length of upper valve rod 6 is greater than the length of valve-rod cavity, the upper junction surface of what upper valve rod was fixed be connected to spool 4 semicircle housing, and stretches out from valve-rod cavity.Also be provided with worm box at the top of upper valve rod 6, upper valve rod 6 is connected on the output shaft of worm box.Also be provided with lower valve rod chamber in the bottom of valve body 1, lower valve rod chamber is through the bottom of valve body 1.On the lower junction surface of spool 3, be provided with lower valve rod 4, lower valve rod 4 is also arranged in the lower valve rod chamber of valve body 1.Make upper valve rod 6 and lower valve rod 4 lead to the rotation of valve body 1 so simultaneously, make the rotation of spool 3 all the time centered by the center of circle of valve rod.Lower valve rod 4 with the junction surface in lower valve rod chamber are also provided with bottom 2, and lower valve rod seals by bottom 2 completely, makes lower valve rod 4 and the external world completely isolated.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (5)
1. an erosion resistance ball valve, comprise valve body, it is characterized in that: in described valve body, be also provided with valve rod, described valve rod is provided with spool, valve rod is fixedly connected with spool, also valve seat is provided with in described valve body, described valve seat coordinates with seal spool, also spring washer is provided with after described valve seat, sealing regulating block, described valve seat contacts with spool, what contact with spool at valve seat is also provided with valve seat soft seal and the hard Sealing of valve seat, described spring washer is arranged between valve seat and sealing regulating block, sealing regulating block is threaded with being also provided with between valve body, certain radial clearance is had between described valve seat and valve body.
2. a kind of erosion resistance ball valve according to claim 1, it is characterized in that: described valve rod comprises upper valve rod and lower valve rod, described upper valve rod stretches out outside valve body, sealing clamp is provided with between upper valve rod and valve body, described lower valve rod is coaxial with upper valve rod, is also provided with bottom in the outer junction of lower valve rod and valve body.
3. a kind of erosion resistance ball valve according to claim 2, it is characterized in that: described upper valve rod is also provided with worm box, described upper valve rod is arranged on the output shaft of worm box.
4. a kind of erosion resistance ball valve according to claim 1, it is characterized in that: the shape of described valve body and spool is the housing of a semi-round ball, also junction surface is respectively arranged with in the top and the bottom of semi-round ball housing, junction surface is also provided with attachment hole, and the center of circle of attachment hole and the center of circle of valve rod are on the same line.
5. a kind of erosion resistance ball valve according to claim 4, is characterized in that: the described valve seat contacted with spool is arc surface, described valve seat soft seal and the hard Sealing of valve seat are all arranged on the arc surface of valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848016.8A CN104500775A (en) | 2014-12-29 | 2014-12-29 | Erosion resistant ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848016.8A CN104500775A (en) | 2014-12-29 | 2014-12-29 | Erosion resistant ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104500775A true CN104500775A (en) | 2015-04-08 |
Family
ID=52942207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410848016.8A Pending CN104500775A (en) | 2014-12-29 | 2014-12-29 | Erosion resistant ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104500775A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782537A (en) * | 2016-05-18 | 2016-07-20 | 德施普科技发展温州有限公司 | Cavitation resistant ball valve core |
| CN106763869A (en) * | 2017-01-12 | 2017-05-31 | 胜利阀门有限公司 | A kind of Full-diameter eccentric hemisphere valve |
| CN107795705A (en) * | 2017-11-21 | 2018-03-13 | 浙江工贸职业技术学院 | A kind of efficient sealed erosion resistance ball valve |
| CN108361406A (en) * | 2018-05-09 | 2018-08-03 | 盐城市大昌石化设备有限公司 | A kind of multi-level V-type hard seal ball valve |
| CN108397294A (en) * | 2017-02-08 | 2018-08-14 | 卡特彼勒公司 | Machine system with fluid stop valve and method |
| CN110953372A (en) * | 2018-09-26 | 2020-04-03 | 广东德昌电机有限公司 | Sealing system for a valve |
| CN110953368A (en) * | 2018-09-26 | 2020-04-03 | 广东德昌电机有限公司 | Valve gate |
-
2014
- 2014-12-29 CN CN201410848016.8A patent/CN104500775A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782537A (en) * | 2016-05-18 | 2016-07-20 | 德施普科技发展温州有限公司 | Cavitation resistant ball valve core |
| CN105782537B (en) * | 2016-05-18 | 2018-04-24 | 德施普科技发展温州有限公司 | A kind of cavitation ball valve core |
| CN106763869A (en) * | 2017-01-12 | 2017-05-31 | 胜利阀门有限公司 | A kind of Full-diameter eccentric hemisphere valve |
| CN108397294A (en) * | 2017-02-08 | 2018-08-14 | 卡特彼勒公司 | Machine system with fluid stop valve and method |
| CN107795705A (en) * | 2017-11-21 | 2018-03-13 | 浙江工贸职业技术学院 | A kind of efficient sealed erosion resistance ball valve |
| CN107795705B (en) * | 2017-11-21 | 2019-05-17 | 浙江工贸职业技术学院 | A kind of efficient sealed erosion resistance ball valve |
| CN108361406A (en) * | 2018-05-09 | 2018-08-03 | 盐城市大昌石化设备有限公司 | A kind of multi-level V-type hard seal ball valve |
| CN110953372A (en) * | 2018-09-26 | 2020-04-03 | 广东德昌电机有限公司 | Sealing system for a valve |
| CN110953368A (en) * | 2018-09-26 | 2020-04-03 | 广东德昌电机有限公司 | Valve gate |
| CN110953372B (en) * | 2018-09-26 | 2024-03-26 | 广东德昌电机有限公司 | Sealing system for valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150408 |
|
| WD01 | Invention patent application deemed withdrawn after publication |