CN113864479A - Bidirectional hard seal ball valve - Google Patents
Bidirectional hard seal ball valve Download PDFInfo
- Publication number
- CN113864479A CN113864479A CN202111188073.4A CN202111188073A CN113864479A CN 113864479 A CN113864479 A CN 113864479A CN 202111188073 A CN202111188073 A CN 202111188073A CN 113864479 A CN113864479 A CN 113864479A
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- CN
- China
- Prior art keywords
- valve
- cam
- valve rod
- valve body
- pin
- 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
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
- F16K31/52458—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a tap or cock
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a bidirectional hard sealing ball valve which comprises a valve body, a valve core, an upper valve rod, a lower valve rod and an upper cover, wherein a cam is fixedly arranged at the lower end of the lower valve rod, an arc-shaped surface and a positive column surface are arranged on the cam, a pin mounting groove is formed in one side of a lower valve rod mounting hole, a cam pin is arranged in the pin mounting groove, the cam pin is parallel to the lower valve rod, and the cam pin is tangent to the arc-shaped surface; the lower valve rod drives the cam to rotate, and the arc-shaped surface of the cam and the cam pin form self-locking; the rotation range of the cam is 0-90 degrees. According to the technical scheme, the rotation range of the cam is 0-90 degrees, and the arc-shaped surface of the cam is extruded with the cam pin at the opening position and the closing position to realize self-locking. The valve core can be effectively prevented from retreating due to the large clearance between the valve core and the valve body, so that the reverse sealing pressure is improved, the sealing performance is good, the leakage is not easy to occur, the structure is simple, and the practicability is good.
Description
Technical Field
The invention relates to the technical field of ball valves, in particular to a bidirectional hard sealing ball valve.
Background
At present, the existing ball valve, such as an angle stroke eccentric ball valve, has the following defects: (1) when the valve clack or the valve core of the angular travel rotary valve is subjected to reverse pressure in a closing position, the valve core can push the valve rod to retreat, so that the valve is not closed tightly and leaks, and the method is a common problem in the industry for a long time. (2) The reverse sealing pressure of the valve is mostly lower than the forward sealing pressure, so that the sealing performance is poor, the leakage is easy, and the practicability is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the bidirectional hard sealing ball valve which is reasonable in structural design, can prevent the valve core from backing up at the closing position, improves reverse sealing pressure, is good in sealing performance, is not easy to leak and is good in practicability.
In order to achieve the purpose, the invention provides the following technical scheme: a two-way hard seal ball valve comprises a valve body, a valve core, an upper valve rod, a lower valve rod and an upper cover, wherein a valve cavity is arranged in the valve body, the valve core is arranged in the valve cavity, an upper valve rod mounting hole is vertically arranged at the top of the valve cavity, a valve rod through hole is formed in the position, aligned with the upper valve rod mounting hole, of the upper cover, and the lower end of the upper valve rod sequentially penetrates through the valve rod through hole and the upper valve rod mounting hole from top to bottom and then is fixedly connected with the upper end of the valve core; a lower valve rod mounting hole is vertically formed in the bottom of the valve cavity, the lower valve rod penetrates through the lower valve rod mounting hole, and the upper end of the lower valve rod is fixedly connected with the lower end of the valve core; the valve cover is detachably connected with the valve body, a cam is fixedly arranged at the lower end of the lower valve rod, an arc-shaped surface and a positive cylindrical surface are arranged on the cam, a pin mounting groove is formed in one side of a lower valve rod mounting hole, a cam pin is arranged in the pin mounting groove, the cam pin is parallel to the lower valve rod, and the cam pin is tangent to the arc-shaped surface; the lower valve rod drives the cam to rotate, and the arc-shaped surface of the cam and the cam pin form self-locking; the rotation range of the cam is 0-90 degrees.
The invention is further configured to: one end of the arc-shaped surface is an opening position, the other end of the arc-shaped surface is a closing position, and the arc-shaped surface and the cam pin are self-locked through extrusion at the opening position or the closing position.
The invention is further configured to: the valve body includes left valve body, well valve body and right valve body, left side valve body, well valve body and right valve body pass through bolted connection fixed, just valve rod mounting hole and round pin mounting groove all set up valve body bottom position in, the lower port position that well valve body lies in valve rod mounting hole down is provided with an opening and puts the thing recess down, it is provided with to the ring retaining ring to put embedded the being provided with in the thing recess, it constitutes spacingly to the cam pin lower extreme to the up end of ring retaining ring.
The invention is further configured to: the bottom of the middle valve body is provided with a bottom cover, the bottom cover and the middle valve body are locked and fixed through bolts, a positioning protrusion is integrally arranged at the upper end of the bottom cover, and the upper end face of the positioning protrusion compresses the lower end face of the split ring check ring.
The invention is further configured to: the cam is an eccentric cam, and the cam and the lower valve rod are integrally arranged.
The invention is further configured to: the cam is made of the lower end of the lower valve rod through an eccentric shaft machining process, and the cam and the lower valve rod form an eccentric valve rod-shaped structure together.
The invention is further configured to: a valve seat assembly is arranged in the left valve body, and the left valve body is sealed with the valve core through the valve seat assembly.
The invention has the advantages that: compared with the prior art, the cam mechanism is more reasonable in structural arrangement, the rotation range of the cam is 0-90 degrees, and the arc-shaped surface of the cam is extruded with the cam pin at the opening position and the closing position to realize self-locking. The valve core can be effectively prevented from retreating due to the large clearance between the valve core and the valve body, so that the reverse sealing pressure is improved, the sealing performance is good, the leakage is not easy to occur, the structure is simple, and the practicability is good.
The invention is further described with reference to the drawings and the specific embodiments in the following description.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of the cam pin of the present invention in an arcuate face open position;
fig. 3 is a schematic view of the cam pin of the present invention in the arcuate closed position.
Detailed Description
In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, 2 and 3, the invention discloses a bidirectional hard seal ball valve, which comprises a valve body, a valve core 1, an upper valve rod 2, a lower valve rod 3 and an upper cover 4, wherein a valve cavity is arranged in the valve body, the valve core 1 is arranged in the valve cavity, an upper valve rod mounting hole is vertically arranged at the top of the valve cavity, a valve rod through hole is arranged at the position of the upper cover 4, which is aligned with the upper valve rod mounting hole, and the lower end of the upper valve rod 2 sequentially penetrates through the valve rod through hole and the upper valve rod mounting hole from top to bottom and then is fixedly connected with the upper end of the valve core 1; a lower valve rod mounting hole is vertically formed in the bottom of the valve cavity, the lower valve rod 3 penetrates through the lower valve rod mounting hole, and the upper end of the lower valve rod 3 is fixedly connected with the lower end of the valve core 1; the valve cover 4 is detachably connected with the valve body, the lower end of the lower valve rod 3 is fixedly provided with a cam 5, the cam 5 is provided with an arc-shaped surface 51 and a positive cylindrical surface 52, one side of the lower valve rod mounting hole is provided with a pin mounting groove, a cam pin 6 is arranged in the pin mounting groove, the cam pin 6 is parallel to the lower valve rod 3, and the cam pin 6 is tangent to the arc-shaped surface 51; the lower valve rod 3 drives the cam 5 to rotate, and the arc-shaped surface 51 of the cam 5 and the cam pin 6 form self-locking; the rotation range of the cam 5 is 0 to 90 °.
Preferably, the valve cover 4 is fixedly connected with the valve body through a bolt; the lower end of the upper valve rod 2 is connected and fixed with the upper end of the valve core 1 through a key or a screw; the upper end of the valve rod 3 is connected and fixed with the lower end of the valve core 1 through a key or a screw.
In order to make the structure of the present invention more reasonable, preferably, one end of the arc-shaped surface 51 is an opening position 511, the other end of the arc-shaped surface 51 is a closing position 512, and the arc-shaped surface 51 and the cam pin 6 realize self-locking through extrusion at the opening position 511 or the closing position 512.
The valve body includes left valve body 7, well valve body 8 and right valve body 9, left side valve body 7, well valve body 8 and right valve body 9 pass through bolted connection fixed, just valve rod mounting hole and round pin mounting groove all set up 8 bottom positions in well valve body down, the lower port position that well valve body 8 lies in down the valve rod mounting hole is provided with an opening and puts the thing recess down, it is provided with to the embedded formula of putting the thing recess to open ring retaining ring 10, it constitutes spacingly to the upper end of opening retaining ring 10 to the 6 lower extremes of cam pin.
Preferably, the upper valve rod mounting hole is formed in the top of the middle valve body 8, the vertical center lines of the upper valve rod mounting hole and the lower valve rod mounting hole are overlapped, and the vertical center lines of the upper valve rod 2 and the lower valve rod 3 are overlapped.
The bottom of the middle valve body 8 is provided with a bottom cover 11, the bottom cover 11 and the middle valve body 8 are locked and fixed through bolts, the upper end of the bottom cover 11 is integrally provided with a positioning protrusion 111, and the upper end face of the positioning protrusion 111 compresses the lower end face of the split-ring retainer ring 10.
The cam 5 is an eccentric cam, and the cam 5 and the lower valve rod 3 are integrally arranged. Or, the cam 5 is made of the lower end of the lower valve rod 3 by an eccentric shaft machining process, and the cam 5 and the lower valve rod 3 form an eccentric valve rod-shaped structure together.
A valve seat assembly 12 is arranged in the left valve body 7, and the left valve body 7 is sealed with the valve core 1 through the valve seat assembly 12. Preferably, a medium channel is arranged in the left valve body, the valve seat assembly 12 comprises a positioning end cover, an elastic gasket, a hard sealing valve seat and an O-shaped sealing ring, the positioning end cover 12 is in threaded connection with the left end of the medium through hole, the medium through hole is transversely formed in the middle of the positioning end cover 12, the elastic gasket is arranged at the right end of the positioning end cover, the hard sealing valve seat is arranged at the right end of the elastic gasket, the O-shaped sealing ring is sleeved on the hard sealing valve seat, and the hard sealing valve seat forms hard sealing between the right end of the hard sealing valve seat and the outer surface of the valve core under the elastic action of the elastic gasket.
In practical application, the rotation range of the cam is 0-90 degrees, and the arc-shaped surface of the cam is extruded with the cam pin at the opening position and the closing position to realize self-locking. The valve core can be effectively prevented from retreating due to the large clearance between the valve core and the valve body, so that the reverse sealing pressure is improved, the sealing performance is good, the leakage is not easy to occur, the structure is simple, and the practicability is good.
The above embodiments are described in detail for the purpose of further illustrating the present invention and should not be construed as limiting the scope of the present invention, and the skilled engineer can make insubstantial modifications and variations of the present invention based on the above disclosure.
Claims (7)
1. A two-way hard seal ball valve comprises a valve body, a valve core (1), an upper valve rod (2), a lower valve rod (3) and an upper cover (4), wherein a valve cavity is arranged in the valve body, the valve core (1) is arranged in the valve cavity, an upper valve rod mounting hole is vertically arranged at the top of the valve cavity, a valve rod through hole is formed in the position, aligned with the upper valve rod mounting hole, of the upper cover (4), the lower end of the upper valve rod (2) sequentially penetrates through the valve rod through hole and the upper valve rod mounting hole from top to bottom and then is fixedly connected with the upper end of the valve core (1); a lower valve rod mounting hole is vertically formed in the bottom of the valve cavity, the lower valve rod (3) penetrates through the lower valve rod mounting hole, and the upper end of the lower valve rod (3) is fixedly connected with the lower end of the valve core (1); valve gap (4) can dismantle with the valve body and be connected its characterized in that: the lower end of the lower valve rod (3) is fixedly provided with a cam (5), an arc-shaped surface (51) and a right cylindrical surface (52) are arranged on the cam (5), a pin mounting groove is formed in one side of a lower valve rod mounting hole, a cam pin (6) is arranged in the pin mounting groove, the cam pin (6) is parallel to the lower valve rod (3), and the cam pin (6) is tangent to the arc-shaped surface (51); the lower valve rod (3) drives the cam (5) to rotate, and the arc-shaped surface of the cam (5) and the cam pin (6) form self-locking; the rotation range of the cam (5) is 0-90 degrees.
2. A bi-directional hard-seal ball valve as claimed in claim 1, wherein: one end of the arc-shaped surface (51) is an opening position (511), the other end of the arc-shaped surface (51) is a closing position (512), and the arc-shaped surface (51) and the cam pin (6) realize self-locking through extrusion at the opening position (511) or the closing position (512).
3. A bi-directional hard-seal ball valve as claimed in claim 2, wherein: the valve body includes left valve body (7), well valve body (8) and right valve body (9), left side valve body (7), well valve body (8) and right valve body (9) are fixed through bolted connection, just valve rod mounting hole and round pin mounting groove all set up valve body (8) bottom position in down, well valve body (8) are located down the lower port position of valve rod mounting hole and are provided with an opening and put the thing recess down, it is provided with to open ring retaining ring (10) to put the embedded formula of thing recess, constitute spacingly to the upper end of open ring retaining ring (10) to cam round pin (6) lower extreme.
4. A bi-directional hard-seal ball valve as claimed in claim 3, wherein: the bottom of the middle valve body (8) is provided with a bottom cover (11), the bottom cover (11) and the middle valve body (8) are locked and fixed through bolts, a positioning protrusion (111) is integrally arranged at the upper end of the bottom cover (11), and the upper end face of the positioning protrusion (111) is pressed on the lower end face of the split-ring retainer ring (10).
5. A bi-directional hard-seal ball valve as claimed in claim 1 or 4, wherein: the cam (5) is an eccentric cam, and the cam (5) and the lower valve rod (3) are integrally arranged.
6. A bi-directional hard-seal ball valve as claimed in claim 1 or 4, wherein: the cam (5) is made of the lower end of the lower valve rod (3) through an eccentric shaft machining process, and the cam (5) and the lower valve rod (3) form an eccentric valve rod-shaped structure together.
7. A bi-directional hard-seal ball valve as claimed in claim 3, wherein: a valve seat assembly (12) is arranged in the left valve body (7), and the left valve body (7) is sealed with the valve core (1) through the valve seat assembly (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111188073.4A CN113864479A (en) | 2021-10-12 | 2021-10-12 | Bidirectional hard seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111188073.4A CN113864479A (en) | 2021-10-12 | 2021-10-12 | Bidirectional hard seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113864479A true CN113864479A (en) | 2021-12-31 |
Family
ID=78999120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111188073.4A Pending CN113864479A (en) | 2021-10-12 | 2021-10-12 | Bidirectional hard seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113864479A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797734A (en) * | 2022-04-28 | 2022-07-29 | 北京精仪天和智能装备有限公司 | Radiation powder material homogenization reaction device |
-
2021
- 2021-10-12 CN CN202111188073.4A patent/CN113864479A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797734A (en) * | 2022-04-28 | 2022-07-29 | 北京精仪天和智能装备有限公司 | Radiation powder material homogenization reaction device |
| CN114797734B (en) * | 2022-04-28 | 2024-05-03 | 北京精仪天和智能装备有限公司 | Radiation powder material homogenizing reaction device |
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