CN115614495A - Ball valve with concave ball sealing surface - Google Patents
Ball valve with concave ball sealing surface Download PDFInfo
- Publication number
- CN115614495A CN115614495A CN202211156561.1A CN202211156561A CN115614495A CN 115614495 A CN115614495 A CN 115614495A CN 202211156561 A CN202211156561 A CN 202211156561A CN 115614495 A CN115614495 A CN 115614495A
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- Prior art keywords
- valve
- ball
- sealing surface
- ball valve
- valve body
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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
- F16K5/0605—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 with particular plug arrangements, e.g. particular shape or built-in means
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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
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention provides a ball valve with a concave ball sealing surface, which comprises a valve body, a ball body, a valve seat, a valve rod, a first sealing ring, a filler and a filler gland, wherein the valve seat is arranged in the valve body, a valve rod groove and a flow passage hole are formed in the ball body, the ball body is arranged in the valve seat, the flow passage hole is superposed with a flow passage of the valve body when the ball valve is fully opened, one end of the valve rod penetrates through the valve body and is connected with the valve rod groove of the ball body, the first sealing ring is arranged between the part of the valve rod, which is close to the valve body, and the valve body, the filler and the filler gland are sequentially arranged in the circumferential direction of the part of the valve rod, which is far away from the valve body, and a groove is formed in the sealing surface of the ball body. The invention can prevent the sealing surfaces of the ball body and the valve seat from being scratched or scratched by particles or dust impurities, and reduces the friction force of the sealing surfaces so as to reduce the torque of the valve rod.
Description
Technical Field
The invention relates to the technical field of ball valve sealing, in particular to a ball valve with a concave ball sealing surface.
Background
The sealing surface of the valve body of the existing hard sealing ball valve is a whole spherical surface, and a flow passage hole and a valve rod groove are formed in the ball body. The sealing surface of the ball body and the sealing surface of the valve seat are jointed in the opening and closing process of the valve, impurity components in a medium, such as particles, dust and the like, can be stuck on the spherical surface and are easily accumulated in a small included angle at the joint of the ball body and the valve seat to enter the joint of the ball body and the valve seat, so that the sealing surface is scratched or scratched, and the valve is leaked. In addition, because the contact area between the ball sealing surface and the valve seat sealing surface is large, the friction force is large when the valve is opened and closed, the torque of the valve is also large, the configured execution structure is correspondingly increased, and the cost is increased.
Therefore, the invention provides the ball valve with the concave ball sealing surface, which solves the problem that the ball valve sealing surface is easy to scratch or scrape in an unclean medium and reduces the friction force of the sealing surface.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a ball valve with a concave ball sealing surface.
The invention provides a ball valve with a concave ball sealing surface, which comprises a valve body, a ball body, a valve seat, a valve rod, a first sealing ring, a packing and a packing gland, wherein the valve seat is arranged in the valve body, a valve rod groove and a flow passage hole are arranged on the ball body, the ball body is arranged in the valve seat, the flow passage hole is superposed with a flow passage of the valve body when the ball valve is fully opened, one end of the valve rod penetrates through the valve body and is connected with the valve rod groove of the ball body, the first sealing ring is arranged between the part of the valve rod, which is close to the valve body, and the valve body, the packing and the packing gland are sequentially arranged in the circumferential direction of the part of the valve rod, which is far away from the valve body, and a groove is arranged on the sealing surface of the ball body.
Further, the groove is located at the end face where the ball body intersects with the flow channel of the valve body when the ball valve is fully closed.
Further, the shape of the groove is an area enclosed by two concentric spherical surfaces and the radius of the sphere, wherein the outer spherical surface is the surface of the sphere.
Further, the projection of the groove on the flow passage of the valve body does not exceed the flow passage area of the valve body.
Furthermore, a disc spring is further arranged at the end part of one side of the valve seat along the flow passage direction of the valve body, and the disc spring provides elastic force for the valve seat.
Furthermore, a side body is arranged between the disc spring and the valve seat.
Further, a second sealing ring is further arranged among the side body, the valve seat and the valve body.
Further, the ball valve is a floating ball valve or a fixed ball valve.
Further, the ball valve is a manual ball valve, an electric ball valve or a pneumatic ball valve.
Further, the sealing surface of the ball valve is hard sealing or soft sealing.
Compared with the prior art, the invention has the following beneficial effects:
according to the ball valve with the concave spherical sealing surface, the groove is formed in the spherical sealing surface, and in the process of closing or opening the valve, dust, solid particles and other impurities in a medium or adhered to the spherical body are discharged by pressure in a pipeline through the gap between the spherical body and the valve seat, so that accumulation is avoided, the particles or dust impurities are prevented from scratching or scratching the spherical body and the valve seat sealing surface, and the service life of the valve is prolonged. The sealing surface of the valve body is partially concave, so that the contact area between a ball body and a valve seat in the opening and closing process is reduced, the friction force of the sealing surface is reduced, the valve torque is reduced, the parameters of the valve rod and the driving mechanism are reduced, and the cost of the valve switchboard is further reduced.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a block diagram of the components of an embodiment of the present invention with a ball valve fully closed;
FIG. 2 is a block diagram of the components of the embodiment of the present invention with the ball valve fully open;
FIG. 3 is a schematic diagram of a sphere structure according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of the engagement of the ball with the seat when the ball valve of the present embodiment is partially closed;
fig. 5 is a schematic diagram of the ball and the valve seat when the ball valve of the embodiment of the invention is fully opened.
Wherein the content of the first and second substances,
1-valve body, 2-valve seat, 3-ball, 31-flow passage hole, 32-valve rod groove, 33-groove, 4-valve rod, 5-first sealing ring, 6-packing, 7-packing gland, 8-disc spring, 9-side body and 10-second sealing ring.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides a ball valve with a concave spherical sealing surface, which is characterized in that a groove is arranged on the sealing surface of a valve body, so that dust and particles stuck on the sealing surface of the valve in the opening or closing process are discharged from the groove of the spherical sealing surface under the medium pressure flushing, and the sealing surface is prevented from being scratched or scratched. Meanwhile, the sealing surface is concave, so that the contact area of the sealing surface in the opening or closing process of the valve is reduced, and the friction force is reduced, so that the torque of the valve is reduced.
As shown in fig. 1 and fig. 2, the floating ball valve of the present embodiment includes a valve body 1, a valve seat 2, a ball body 3, a valve rod 4, a first sealing ring 5, a packing 6, and a packing gland 7, wherein a flow passage hole 31 and a valve rod groove 32 are formed in the ball body 3, the valve seat 2 is disposed in the valve body 1, the ball body 3 is disposed in the valve seat 2, a sealing surface of the ball body 3 is matched with a sealing surface of the valve seat 2, and the flow passage hole 31 of the ball body 3 coincides with a flow passage of the valve body 1 when the valve is in a fully open position to form a linear flow passage. The valve rod 4 penetrates through one side wall surface of the valve body 1, one end of the valve rod 4 is matched with the valve rod groove 32 of the ball body 3, and a first sealing ring 5 is arranged between the valve rod 4 and the valve body 1 at the same side close to the ball body 3; on the other side away from the ball 3, the valve rod 4 is provided with a packing 6 and a packing gland 7 in the circumferential direction.
Ball valves having the above characteristics are well known in the art, and those skilled in the art can implement the floating ball valve in combination with common knowledge.
As shown in fig. 3, 4 and 5, the present embodiment is improved in that a groove 33 is provided on the sealing surface of the ball 3. As an embodiment, the grooves 33 are symmetrically arranged on the ball 3, and the line connecting the center lines of the two grooves 33 is perpendicular to the center line of the flow passage hole 31 and the center line of the valve stem groove 32. As shown in fig. 1, when the ball valve is in a fully closed state, the groove 33 is located on an end surface where the ball 3 intersects with the flow passage of the valve body 1.
As shown in fig. 1 and fig. 3, the specific shape of the groove 33 of the present embodiment is an area surrounded by two concentric spherical surfaces and the radius of the sphere, wherein the outer spherical surface is the surface of the sphere 3, the radius of the inner spherical surface is slightly smaller than the radius of the outer spherical surface, and the difference between the two radii is not more than 10mm. As shown in fig. 2, when the ball valve is in the fully open state, the projection of the groove 33 on the flow passage is two concentric circles, wherein the diameter of the outer circle should not exceed the diameter of the flow passage of the valve body 1, so as to ensure that the ball valve does not leak when in the fully closed state.
The ball body 3 with the groove 33 can be used for a floating ball valve and a fixed ball valve; the driving mode of the ball valve can be manual, electric or pneumatic and other driving modes; the sealing surface of the ball valve can be hard sealing or soft sealing. For different types of valves, only corresponding mechanisms need to be adjusted.
As shown in fig. 1 and 2, a disc spring 8 is further disposed at an end of the valve seat 2 along a flow passage direction of the valve body 1, a side body 9 is disposed between the disc spring 8 and the valve seat 2, and the disc spring 8 can provide an elastic force for the valve seat 2, so as to facilitate the compression between the valve seat 2 and the ball 3. And a second sealing ring 10 is arranged among the valve seat 2, the side body 9 and the valve body 1 and used for realizing the sealing of the valve.
Fig. 4 and 5 show the valve seat 2 in cooperation with the ball 3 when the valve is partially closed and fully closed. When the valve is fully closed, the disc spring 8 pushes the valve seat 2 to press the ball body 3, so that the sealing surface of the valve seat 2 is attached to the sealing surface of the ball body 3, and the pipeline is cut off. When the valve is partially closed, the flow passage hole 31 of the ball 3 is communicated with the flow passage part of the valve body 1, and a gap exists between the sealing surface of the ball 3 and the sealing surface of the valve seat 2, so that a medium can flush the groove 33 under the action of pressure. When the valve is fully opened, the flow passage of the valve body 1 is communicated with the valve seat 2 and the flow passage hole 31 of the ball body 3, so that the full circulation of the pipeline is realized.
The ball valve of this embodiment drives the valve rod 4 through the actuating mechanism or the handle, and the spheroid 3 clockwise rotation, the valve is closed. The valve rod 4 and the ball body 3 are driven by the driving mechanism or the handle to rotate anticlockwise, and the valve is opened. In the process of closing or opening the valve, as shown in fig. 4, the pressure in the pipeline discharges impurities such as dust, solid particles and the like in a medium or adhered on the ball 3 through a gap formed between the groove 33 of the ball 3 and the valve seat 2, so that accumulation is avoided, the impurities such as particles or dust are prevented from scratching or scratching the sealing surfaces of the ball and the valve seat, and the service life of the valve is prolonged. In addition, because the sealing surface part of the ball body 3 is concave, the contact area between the ball body 3 and the valve seat 2 in the opening and closing or half-opening process is reduced, the sealing friction force is reduced, the valve torque is reduced, the parameters of the valve rod 4 and the driving mechanism are reduced, and the cost of the valve switchboard is reduced.
The foregoing description has described specific embodiments of the present invention. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The utility model provides a ball valve of sealed face indent of spheroid, includes valve body, spheroid, disk seat, valve rod, first sealing washer, filler, gland, the disk seat is located in the valve body, be equipped with valve rod groove and runner hole on the spheroid, the spheroid is located in the disk seat, when the ball valve is opened entirely the runner hole with the runner coincidence of valve body, the one end of valve rod is passed the valve body and with spheroidal valve rod groove is connected, the valve rod is close to the part of valve body with be equipped with between the valve body first sealing washer, the valve rod is kept away from the circumference of the part of valve body is equipped with in proper order the filler the gland, its characterized in that, be equipped with the recess on the spheroidal sealed face.
2. The ball valve of claim 1, wherein the recess is located at an end face of the ball that intersects the flow passage of the valve body when the ball valve is fully closed.
3. A ball valve according to claim 2, wherein the recess is in the form of two concentric spherical surfaces enclosing a radius of the ball, and wherein the outer spherical surface is the surface of the ball.
4. A ball valve according to claim 3, wherein the projection of the groove onto the flow path of the valve body does not exceed the flow path area of the valve body.
5. The ball valve with the concave spherical sealing surface according to claim 1, wherein a disc spring is further disposed at one side end of the valve seat along the flow passage direction of the valve body, and provides elastic force for the valve seat.
6. The ball valve with a concave ball sealing surface according to claim 5, wherein a side body is further arranged between the disc spring and the valve seat.
7. The ball valve with a concave ball sealing surface according to claim 6, wherein a second sealing ring is further arranged between the side body, the valve seat and the valve body.
8. The ball valve with a concave ball sealing surface according to claim 1, wherein the ball valve is a floating ball valve or a fixed ball valve.
9. The ball valve with a concave spherical sealing surface according to claim 1, wherein the ball valve is a manual ball valve, an electric ball valve or a pneumatic ball valve.
10. The ball valve with a concave ball body sealing surface according to claim 1, wherein the sealing surface of the ball valve is a hard seal or a soft seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211156561.1A CN115614495A (en) | 2022-09-22 | 2022-09-22 | Ball valve with concave ball sealing surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211156561.1A CN115614495A (en) | 2022-09-22 | 2022-09-22 | Ball valve with concave ball sealing surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115614495A true CN115614495A (en) | 2023-01-17 |
Family
ID=84858443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211156561.1A Pending CN115614495A (en) | 2022-09-22 | 2022-09-22 | Ball valve with concave ball sealing surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115614495A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0401443A1 (en) * | 1989-05-16 | 1990-12-12 | Taco, Inc. | Low torque ball valve |
| CN205715756U (en) * | 2016-05-03 | 2016-11-23 | 上海浙东阀门集团有限公司 | A kind of novel anti-gray valve seat construction of Coal Chemical Industry ball valve |
| CN205715757U (en) * | 2016-05-03 | 2016-11-23 | 上海浙东阀门集团有限公司 | A kind of Novel sphere structure of Coal Chemical Industry ball valve |
| DE202015006226U1 (en) * | 2015-09-04 | 2016-12-08 | Gebrüder Kemper Gmbh + Co. Kg Metallwerke | ball valve |
| CN106363356A (en) * | 2016-10-12 | 2017-02-01 | 南通大学 | Micro-modeling ball valve element and machining method thereof |
| CN207034250U (en) * | 2017-08-07 | 2018-02-23 | 浙江恒通阀门有限公司 | A kind of five resealings combination fixing ball valve |
| CN108758077A (en) * | 2018-08-24 | 2018-11-06 | 江苏华太电力仪表有限公司 | A kind of new multi-purpose ball valve |
| CN108869763A (en) * | 2018-09-18 | 2018-11-23 | 江苏海纬集团有限公司 | A kind of adjustable shut-off valve |
| CN210106654U (en) * | 2019-05-14 | 2020-02-21 | 苏州纽威阀门股份有限公司 | Ball valve |
| CN212804343U (en) * | 2020-07-01 | 2021-03-26 | 南京科宏铸造有限公司 | High-temperature-resistant wear-resistant ball valve |
-
2022
- 2022-09-22 CN CN202211156561.1A patent/CN115614495A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0401443A1 (en) * | 1989-05-16 | 1990-12-12 | Taco, Inc. | Low torque ball valve |
| DE202015006226U1 (en) * | 2015-09-04 | 2016-12-08 | Gebrüder Kemper Gmbh + Co. Kg Metallwerke | ball valve |
| CN205715756U (en) * | 2016-05-03 | 2016-11-23 | 上海浙东阀门集团有限公司 | A kind of novel anti-gray valve seat construction of Coal Chemical Industry ball valve |
| CN205715757U (en) * | 2016-05-03 | 2016-11-23 | 上海浙东阀门集团有限公司 | A kind of Novel sphere structure of Coal Chemical Industry ball valve |
| CN106363356A (en) * | 2016-10-12 | 2017-02-01 | 南通大学 | Micro-modeling ball valve element and machining method thereof |
| CN207034250U (en) * | 2017-08-07 | 2018-02-23 | 浙江恒通阀门有限公司 | A kind of five resealings combination fixing ball valve |
| CN108758077A (en) * | 2018-08-24 | 2018-11-06 | 江苏华太电力仪表有限公司 | A kind of new multi-purpose ball valve |
| CN108869763A (en) * | 2018-09-18 | 2018-11-23 | 江苏海纬集团有限公司 | A kind of adjustable shut-off valve |
| CN210106654U (en) * | 2019-05-14 | 2020-02-21 | 苏州纽威阀门股份有限公司 | Ball valve |
| CN212804343U (en) * | 2020-07-01 | 2021-03-26 | 南京科宏铸造有限公司 | High-temperature-resistant wear-resistant ball valve |
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