CN110748664A - Double-plate ball valve - Google Patents
Double-plate ball valve Download PDFInfo
- Publication number
- CN110748664A CN110748664A CN201810819427.2A CN201810819427A CN110748664A CN 110748664 A CN110748664 A CN 110748664A CN 201810819427 A CN201810819427 A CN 201810819427A CN 110748664 A CN110748664 A CN 110748664A
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- Prior art keywords
- ball
- valve
- plate
- rod
- sealing
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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
- F16K5/06—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
- F16K5/0647—Spindles or actuating 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
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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
- 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 discloses a double-plate ball valve, which comprises: a valve body; a ball plate supporting seat is arranged in the valve body; the novel ball body is fixed in the valve body through the upper valve rod and the lower valve rod; the spherical plates are arranged on the left side and the right side of the novel sphere; the rail discs are fixed to the upper end and the lower end of the novel sphere through screws; a left support rod and a right support rod matched with the lower valve rod; the valve body part corresponding to the sealing surface of the ball body on the outer edge of the ball panel is provided with a sealing valve seat. The invention has the advantages that: (1) the lower valve rod is fixed by adopting a left support rod and a right support rod, does not penetrate through the valve body, and avoids leakage points at the position of the lower valve rod; (2) in the process of switch rotation, the double-plate spherical surface and the valve seat sealing surface do not contact and rub, and the scraping or abrasion to the valve seat sealing surface in the rotation process can not be caused, so that the service life of the whole body is prolonged, and the double-plate spherical surface can be used for simple adjustment; (3) the cost is reduced, the space is saved, and meanwhile, the damage of impurities attached to the spherical surface to the sealing surface of the valve seat in the stroke can be avoided.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a double-plate ball valve and a novel valve for controlling opening and closing or adjusting of fluid in a pipeline.
Background
Original fixed ball valve is equipped with a spheroid in the lumen of valve body, with upper and lower valve rod fixed connection valve body, spheroidal both ends are equipped with sealed disk seat respectively, spheroidal surface is all made for whole circular arc plain noodles, the too big occupation space of volume is big like this, it is too heavy, with high costs, in switch in-process and during the closed condition, the friction state is all hugged closely to sphere and disk seat sealing face, the friction of whole sphere causes torsion big, disk seat wearing and tearing are big, reduce sealed life.
Therefore, the technical personnel in the field need to solve the problem how to provide a double-plate ball valve which has the characteristics of small volume, low cost, prolonged service life and capability of avoiding the damage of impurities attached to the spherical surface in the stroke to the sealing surface of the valve seat.
Disclosure of Invention
In view of the above, the invention provides a double-plate ball valve which has the characteristics of small volume, low cost, prolonged service life and capability of avoiding the damage of impurities attached to a spherical surface in a stroke to a sealing surface of a valve seat.
In order to achieve the purpose, the invention provides the following technical scheme:
a dual plate ball valve comprising: a valve body; a ball plate supporting seat is arranged in the valve body; the novel ball body is fixed in the valve body through the upper valve rod and the lower valve rod; the spherical plates are arranged on the left side and the right side of the novel sphere; the rail discs are fixed to the upper end and the lower end of the novel sphere through screws; the left supporting rod and the right supporting rod are matched with the lower valve rod; the sealing valve seat is arranged at the position of the valve body corresponding to the sealing surface of the ball on the outer edge of the ball panel; a sealing ring and a spring are arranged behind the sealing valve seat and used for assisting sealing; it is characterized by also comprising: the lower valve rod is fixed on a lower valve rod supporting seat at the lower end, supporting holes are formed in the left side and the right side of the lower valve rod supporting seat, the left supporting rod and the right supporting rod are respectively inserted into the corresponding supporting holes, and the sealing ring is pressed tightly through a fastening ring on the side face.
Preferably, in the double-plate ball valve, the valve body is integrally connected by adopting a split type or a pipe welding type.
Preferably, in the above-mentioned double plate ball valve, the valve body inner ball plate support seat is connected with the left and right spherical plates as an organic whole, the edge of the ball panel is processed into a ball sealing surface, forming the novel ball.
Preferably, in the above-mentioned double-plate ball valve, the upper middle end circular portion of the upper valve rod is filled with a packing material, and is compressed and sealed by a pressing cover and a pressing ring in sequence, and then is screwed and fixed by a bolt and a nut.
Preferably, in the above-mentioned double-plate ball valve, the outer edge of the sealing valve seat is provided with a rail abutting surface corresponding to the rail disc at a position close to the ball plate support seat.
Preferably, in the double-plate ball valve, a main seal and a sub seal are provided at positions corresponding to the positions of the sealing surfaces of the ball body.
Preferably, in the above-mentioned double-plate ball valve, a rail disc seat surface is provided between the upper valve rod, the lower valve rod and the ball panel, a plurality of screw holes are provided on the rail disc seat surface, and the rail discs at both ends are fastened to the ball panel support seats at both ends by screwing screws thereon to form a set of closing members.
Compared with the prior art, the technical scheme has the advantages that:
1. the whole volume is reduced, the space is saved, the cost is saved, and the weight is reduced;
2. the lower valve rod is fixed by adopting a left support rod and a right support rod, does not penetrate through the valve body, and avoids leakage points at the position of the lower valve rod;
3. in the process of switch rotation, the double-plate spherical surface and the valve seat sealing surface do not contact and rub, and the scraping or abrasion to the valve seat sealing surface in the rotation process can not be caused, so that the sealing surface is not only protected safely, but also the service life is greatly prolonged due to no rubbing and abrasion, and the double-plate spherical surface can be used for simple adjustment;
4. the cost is reduced, the space is saved, the service life is prolonged, and the damage of impurities attached to the spherical surface to the sealing surface of the valve seat in the stroke can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of the invention.
FIG. 2 is a partial enlarged view of the drawing A-1 of the present invention.
Figure 3 is a front view of the novel ball of the present invention.
Figure 4 is a side view of the novel ball of the present invention.
Figure 5 is a top view of the novel ball of the present invention.
FIG. 6 is a front view of the sealing valve seat of the present invention.
Figure 7 is a rear view of the sealing valve seat of the present invention.
FIG. 8 is a cross-sectional view of the sealing valve seat of the present invention.
FIG. 9 is a cross-sectional view of the lower stem of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a double-plate ball valve which has the characteristics of small volume, low cost, prolonged service life and capability of avoiding the damage of impurities attached to a spherical surface to a sealing surface of a valve seat in a stroke.
Referring to the drawings, the invention discloses a double-plate ball valve, which specifically comprises:
a valve body 1; a ball plate supporting seat 2 is arranged in the valve body 1; a novel ball body 5 fixed in the valve body 1 through an upper valve rod 3 and a lower valve rod 4; spherical plates 51 provided on the left and right sides of the novel sphere 5; the track disc 6 is fixed to the upper end and the lower end of the novel ball body 5 through screws 52; a left support rod 41 and a right support rod 42 which are matched with the lower valve rod 4; wherein, the valve body part corresponding to the sphere sealing surface 53 on the outer edge of the spherical plate 51 is provided with a sealing valve seat 7; a sealing ring 8 and a spring 9 are arranged behind the sealing valve seat 7 and are used for assisting sealing; it is characterized by also comprising: the lower valve rod 4 is fixed on a lower valve rod supporting seat 43 at the lower end, supporting holes are arranged on the left side and the right side of the lower valve rod supporting seat 43, the left supporting rod 41 and the right supporting rod 42 are respectively inserted into the corresponding supporting holes, and the sealing ring is pressed tightly through the fastening ring 10 on the side face.
In order to further optimize the technical scheme, the valve body 1 can adopt a split type connection, and can also adopt a tube welding integral type mode and the like; the pipe welding integration type has better integral sealing reliability; the whole welding has no problem of aging of gasket connecting materials, the valve body is provided with a leakage point, and the connection form of the two ends can adopt various forms such as flanges, welding, threads, clamping sleeves and the like for connection.
In order to further optimize the technical scheme, the ball plate supporting seat 2 in the valve body 1 is connected with the left and right spherical plates into a whole, and the edge of the ball panel 51 is processed into a ball sealing surface 53 to form the novel ball body 5.
In order to further optimize the technical scheme, the upper middle end circular part of the upper valve rod 3 is filled with a packing 31, and is compressed and sealed by a pressing cover 32 and a pressing ring 33 in sequence, and then is screwed and fixed (or in other ways) through a bolt 34 and a nut 35.
In order to further optimize the technical scheme, a track abutting surface 13 corresponding to the track disc 6 is arranged at the position, close to the ball plate supporting seat 2, of the outer edge of the sealing valve seat 7.
In order to further optimize the technical scheme, a main seal 11 and an auxiliary seal 12 are arranged at the positions corresponding to the positions of the ball sealing surface 53.
In order to further optimize the technical scheme, a rail disc seat surface 13 is arranged between the upper valve rod 3, the lower valve rod 4 and the spherical plate 51, a plurality of screw holes 14 are arranged on the rail disc seat surface 13, and the rail discs 6 at two ends are fastened on the ball plate support seats 2 at two ends by screwing screws 52 (or other modes) on the screw holes to form a group of closing parts.
In order to further optimize the above technical solution, the valve body 1, the novel ball 5, the upper valve rod 3 and the lower valve rod 4 are preferably made of a metal material with high strength, such as carbon cast, forged steel, cast iron, stainless steel, copper, etc., as a main body.
In order to further optimize the technical scheme, the sealing valve seat 7 and other sealing elements are preferably made of soft materials such as graphite, rubber, brass and the like, and can also be made of metal materials under hard sealing or special conditions, and the materials can be reasonably and flexibly matched according to the requirements of working conditions.
In order to further optimize the technical scheme, the valve can be controlled manually or in a pneumatic, electric or hydraulic control mode with other actuating mechanisms.
In order to further optimize the technical scheme, an upper ball plate supporting seat 2 and a lower ball plate supporting seat 2 are arranged in a middle cavity of the valve body 1, the outer edge of each ball plate supporting seat 2 is connected with two ball panel 51 into a whole, the edges of the ball panel 51 at the two sides are respectively processed into spherical smooth surfaces as ball sealing surfaces 53, and the whole is a novel ball body 5 which is spherical and concentric.
In order to further optimize the technical scheme, a valve rod hole 21 is formed in the middle of the ball plate supporting seat 2, a left supporting rod 41 is inserted into a lower valve rod 4 and a supporting hole at the lower end of the left side of the corresponding valve body 1, the other end of the lower valve rod is inserted into a supporting hole at the left side of the lower valve rod 4, the lower valve rod 4 is inserted into the ball plate supporting seat 2, a right supporting rod 42 is inserted into the supporting hole of the lower valve rod 4, the other end of the lower valve rod is inserted into the supporting hole at the lower end of the.
In order to further optimize the technical scheme, the lower valve rod 4 and the ball plate supporting seat 2 at the lower end can flexibly rotate; the ball plate supporting seat 2 at the upper end is inserted from the polygonal part of the upper valve rod 3, the circular part at the upper middle end of the upper valve rod 3 is filled with the filler 31, and is compressed and sealed by a pressing cover 32 and a pressing ring 33 in sequence, and then is screwed and fixed by a bolt 34 and a nut 35, the upper end of the ball plate supporting seat can be connected with an electric head, a pneumatic head, a turbine and other control modes for operation, and a novel ball body is driven by rotating the valve rod, and the ball plate supporting seat is connected with a ball panel for switching or adjusting.
In order to further optimize the technical scheme, a sealing valve seat 7 is arranged at the valve body part corresponding to the outer edge of the spherical sealing surface 53 of the spherical plate 51 at the two ends, the spherical surface of the sealing valve seat 7 close to the outer edge of the spherical panel is used as a sealing surface, and a sealing ring 8 and a spring 9 are arranged behind the sealing valve seat 7 to assist sealing.
In order to further optimize the technical scheme, the specific working principle is as follows: when the transmission opening and closing piece is opened, the rotating track disc and the butt joint surface of the track are gradually pushed away, the sealing valve seat is pushed away, the sealing surface of the sealing valve seat is separated from the sealing surface of the spherical plate, and the sealing valve seat is still in a separated state after being opened; when the transmission opening and closing piece is closed and is close to a full-closed position, the track butt joint surface is close to the notch of the track disc, so that the track disc and the track butt joint surface are separated gradually, the sealing surface of the ball panel and the sealing surface on the sealing valve seat are contacted and pressed gradually, the ball panel is tightly attached and sealed under the pushing of the spring and medium pressure, the larger the medium pressure is, the larger the generated thrust is, and the better the sealing performance is.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A dual plate ball valve comprising: a valve body (1); a ball plate supporting seat (2) is arranged in the valve body (1); a novel ball body (5) fixed in the valve body (1) through an upper valve rod (3) and a lower valve rod (4); spherical plates (51) arranged on the left side and the right side of the novel sphere (5); the rail discs (6) are fixed to the upper end and the lower end of the novel sphere (5) through screws (52); a left support rod (41) and a right support rod (42) which are matched with the lower valve rod (4); wherein, a sealing valve seat (7) is arranged at the valve body part corresponding to the ball sealing surface (53) at the outer edge of the ball panel (51); a sealing ring (8) and a spring (9) are arranged behind the sealing valve seat (7) and are used for assisting in sealing; it is characterized by also comprising: the lower valve rod (4) is fixed on a lower valve rod supporting seat (43) at the lower end, supporting holes are formed in the left side and the right side of the lower valve rod supporting seat (43), the left supporting rod (41) and the right supporting rod (42) are respectively inserted into the corresponding supporting holes, and the sealing ring (8) is pressed tightly through a fastening ring (10) on the side face.
2. A two-plate ball valve according to claim 1, wherein the valve body (1) is integrally connected by means of split-type or pipe welding.
3. A double-plate ball valve according to claim 1, wherein the inner ball plate support seat (2) of the valve body (1) is connected with the left and right ball panels (51) into a whole, and the edge of the ball panel (51) is processed into a ball sealing surface (53) to form the novel ball (5).
4. A double-plate ball valve according to claim 1, wherein the upper middle end circular part of the upper valve rod (3) is filled with a packing (31), and is tightly pressed and sealed by a pressing cover (32) and a pressing ring (33) in sequence and then is screwed and fixed by a bolt (34) and a nut (35).
5. A two-plate ball valve according to claim 1, wherein the outer edge of the sealing seat (7) is provided with a rail abutment surface (61) corresponding to the rail disc (6) adjacent to the ball plate support seat (2).
6. A double-plate ball valve according to claim 1, characterized in that the main seal (11) and the secondary seal (12) are provided at locations corresponding to the positions of the sealing surfaces (53) of the ball.
7. A two-plate ball valve according to claim 1, wherein a rail plate seating surface (13) is provided between the upper stem (3), the lower stem (4) and the ball plate (51), and a plurality of screw holes (14) are provided on the rail plate seating surface (13), and the rail plates (6) at both ends are fastened to the ball plate support seats (2) at both ends by tightening screws (52) thereon to form a set of closing members.
8. A double-plate ball valve according to claim 1, wherein the support holes on both sides of the lower stem support base (43), the left support bar (41) and the right support bar (42) are respectively abutted against the left and right side valve walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810819427.2A CN110748664A (en) | 2018-07-24 | 2018-07-24 | Double-plate ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810819427.2A CN110748664A (en) | 2018-07-24 | 2018-07-24 | Double-plate ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110748664A true CN110748664A (en) | 2020-02-04 |
Family
ID=69275484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810819427.2A Pending CN110748664A (en) | 2018-07-24 | 2018-07-24 | Double-plate ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110748664A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388184A (en) * | 2022-10-28 | 2022-11-25 | 自贡新比隆阀门有限公司 | High-performance double-plate ball valve |
| CN117231773A (en) * | 2023-11-14 | 2023-12-15 | 自贡新比隆阀门有限公司 | Double-plate ball valve |
-
2018
- 2018-07-24 CN CN201810819427.2A patent/CN110748664A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388184A (en) * | 2022-10-28 | 2022-11-25 | 自贡新比隆阀门有限公司 | High-performance double-plate ball valve |
| CN117231773A (en) * | 2023-11-14 | 2023-12-15 | 自贡新比隆阀门有限公司 | Double-plate ball valve |
| CN117231773B (en) * | 2023-11-14 | 2024-01-19 | 自贡新比隆阀门有限公司 | Double-plate ball valve |
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