CN105003676B - A kind of low torque pressure balanced rotary piston valve - Google Patents
A kind of low torque pressure balanced rotary piston valve Download PDFInfo
- Publication number
- CN105003676B CN105003676B CN201510461690.5A CN201510461690A CN105003676B CN 105003676 B CN105003676 B CN 105003676B CN 201510461690 A CN201510461690 A CN 201510461690A CN 105003676 B CN105003676 B CN 105003676B
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- Prior art keywords
- valve
- valve rod
- cock
- valve body
- rod
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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
- F16K5/02—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 conical surfaces; Packings therefor
- F16K5/0214—Plug channel at 90 degrees to the inlet
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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
Abstract
A kind of low torque pressure balanced rotary piston valve, including valve body, valve deck, valve rod, cock, cock is a hollow cylinder with taper, its outer surface and the inner surface of the valve body coordinate, corresponding medium channel is provided on valve body and cock, valve rod penetrates valve inner and is connect with cock, valve rod can drive cock to be rotated to realize the keying of valve relative to valve body, it is equipped with filler between valve rod and valve body and is sealed by valve deck, valve rod is equipped with external screw thread, valve body is matched equipped with internal thread with valve rod, the end of valve rod is placed in the valve rod hole of the cock upper end, its end is flat tenon structure, two limit protrusions are arranged in the inner ring interval of valve rod hole, limit protrusion is by angle Stroke Control of the valve rod in valve rod hole within the scope of 0 θ.The invention enables plug valves during opening and closing valve, greatly reduces the friction of mating surface, and open and close torque is small, and operation is light, safe and reliable.
Description
Technical field
The present invention relates to a kind of valves, more particularly to a kind of pressure balanced rotary piston valve.
Background technology
Plug valve is widely used in medium as a kind of valve used earliest in the pipe-line system with particle；Pressure
The grease that balanced type cock valve is injected by the grease pouring valve of valve body epicoele upper design, in cock table under the action of pressure of grease
Face forms the oil lamella of layer, when the greasing pressure of epicoele is less than pressure medium, the check valve energy of cock upper end installation
So that medium is entered in upper chamber, make the pressure one of upper and lower chamber cause cock tightly press to valve body, to reach two way seal
Effect；Cock top and bottom are provided with balance hole, reach under the collective effect of medium, pressure of grease and cock its own gravity
Balance, therefore can be used for senior middle school's low pressure operating mode.
Although pressure balanced rotary piston valve has many advantages, such as that operational torque is small compared with other plug valves, with nominal
The raising of diameter and pressure rating, operational torque about change at parabola with pound series, such as NPS12,
The valve of Class2500, maximum moment have reached 25000Nm, are brought to the type selecting of driving device and operation in design
Certain inconvenience；In addition in the case that cock epicoele is blocked without the balance hole of greasing on time or cock, unlatching moment
Often increase at double so that valve is often difficult to open and close.
Invention content
In order to overcome the disadvantages mentioned above of existing plug valve, the present invention to provide a kind of without friction keying, the lower pressure of torque
Balanced type cock valve.
The technical solution adopted by the present invention to solve the technical problems is a kind of low torque pressure balanced rotary piston valve, packet
Valve body, valve deck, valve rod, cock are included, cock is a hollow cylinder with taper, and outer surface and the inner surface of the valve body are matched
It closes, is provided with corresponding medium channel on valve body and cock, valve rod penetrates valve inner and connect with cock, and valve rod can band
Dynamic cock is rotated to realize the keying of valve relative to valve body, be equipped between valve rod and valve body filler and by valve deck into
Row sealing, valve rod are equipped with external screw thread, and valve body matches equipped with internal thread with valve rod so that valve rod can be with while rotating
It being moved up and down relative to valve body, the end of valve rod is placed in the valve rod hole of the cock upper end, and end is flat tenon structure,
The inner ring interval of cock upper valve rod aperture is arranged two limit protrusions, and limit protrusion is located at the both sides of valve rod, and by valve rod relative to
For the angle Stroke Control of cock rotation within the scope of 0- θ, the numerical value at the angles θ determines that valve rod is suitable according to externally threaded screw pitch on valve rod
When hour hands rotate the angles θ, cock can be pushed to move down, valve rod continues to rotate clockwise, you can cock is driven to turn to standard-sized sheet position
It sets, externally threaded screw pitch moves down the setting value determination of displacement according to cock on valve rod.
Further technical solution is：Valve rod lower face is equipped with bellmouth, and a sphere, the bottom of valve rod hole are installed in bellmouth
Portion is equipped with the ball pad coordinated with sphere, and ball pad upper surface is spherical surface, and lower surface is plane and adjusting pad is arranged between valve rod hole.
The beneficial effects of the invention are as follows：Valve rod and valve body are by screw-thread fit, when valve rod is within the scope of the 0- θ of valve rod hole
When rotation, valve rod pushes cock to move down, so that cock is mutually disengaged with valve body, when valve rod turns in valve rod hole
The position of limit protrusion can drive cock to rotate, thus by valve opening；When valve rod reversely rotates, most opening
Within the scope of the 0- θ of beginning, only valve rod makees lifter motion, and valve stem end is detached with cock, at this time since cock lower end forced area is big
In cock upper end forced area, cock is caused to move up, cock is in contact sealing with valve body mating surface, when valve rod is in valve rod hole
The position of limit protrusion is inside turned to, cock can be driven to rotate, to close valve.
The invention enables plug valves during opening and closing valve, greatly reduces the friction of mating surface, opens
It is small to close torque, operation is light, safe and reliable.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is enlarged drawing at A in Fig. 1；
Fig. 3 is B-B sectional views in Fig. 1.
In figure：1. valve rod；2. valve deck；3. filler；4. valve body；5. cock；6. medium channel；701. external screw thread；702
Internal thread；8. flat tenon structure；9. sphere；10. ball pad；11. adjusting pad；12. limit protrusion；13. valve rod hole.
Specific implementation mode
As shown in Figure 1, 2, 3, a kind of low torque pressure balanced rotary piston valve, including valve body 4, valve deck 2, valve rod 1, cock 5,
Cock 5 is a hollow cylinder with taper, and outer surface and the inner surface of the valve body 4 coordinate, on valve body 4 and cock 5
It is provided with corresponding medium channel 6, valve rod 1 penetrates 4 inside of valve body and connect with cock 5, and valve rod 1 can drive cock 5 opposite
The keying for being rotated to realize valve in valve body 4 is equipped with filler 3 and is carried out by valve deck 2 close between valve rod 1 and valve body 4
Envelope, valve rod 1 are equipped with external screw thread 701, and valve body 4 is matched equipped with internal thread 702 with valve rod 1 so that valve rod 1 is in the same of rotation
When can be moved up and down relative to valve body 4, the end of valve rod 1 is placed in the valve rod hole 13 of 5 upper end of the cock, end
Two limit protrusions 12 are arranged in inner ring interval for flat tenon structure, 5 upper valve rod aperture 13 of cock, and limit protrusion 12 is located at valve rod 1
Both sides, and the angle Stroke Control that valve rod 1 is rotated relative to cock 5, within the scope of 0- θ, the numerical value at the angles θ is according to outer spiral shell on valve rod 1
The screw pitch of line 701 determines that valve rod 1 can push cock 5 to move down when rotating clockwise the angles θ, and valve rod 1 continues to revolve clockwise
Turn, you can drive cock 5 to turn to fully open position, cock 5 when the screw pitch of external screw thread 701 is designed according to designer on valve rod 1
The setting value for moving down displacement determines.
Further technical solution is：1 lower face of valve rod is equipped with bellmouth, and a sphere 9, valve rod hole 13 are installed in bellmouth
Bottom be equipped with the ball pad 10 that coordinate with sphere 9,10 upper surface of ball pad is spherical surface, and lower surface is for plane and between valve rod hole 13
Adjusting pad 11 is set, and such structure is more convenient the mounting and adjusting of valve rod.
When valve opening, first by the angles valve rod rotation θ, in the process, and since valve rod 1 is to be threadedly coupled with valve body 4, valve rod
1 can move down while rotating, to push cock 5 to move down so that cock 5 is mutually disengaged with valve body 4, works as valve
Bar 1 reaches the position of limit protrusion 12 when rotating to the angles θ, be rotated further valve rod 1, cock 5 can be driven to rotate together, to open
Open valve.
When the valve is closed, valve rod direction rotates the angles θ, and valve rod 1 is promoted, and valve rod 1 is detached from cock 5 at this time, due to cock 5
Lower end forced area is more than 5 upper end forced area of cock, moves up cock 5 under the action of pressure medium, cock 5 and valve
4 mating surface of body is in contact sealing, when valve rod 1 turns to the position of limit protrusion 12 in valve rod hole 13, cock 5 can be driven to make
Rotary motion, to close valve.
Claims (2)
1. a kind of low torque pressure balanced rotary piston valve, including valve body, valve deck, valve rod, cock, the cock are one with taper
Hollow cylinder, outer surface and the inner surface of the valve body coordinate, and corresponding medium is provided on the valve body and cock
Channel, the valve rod penetrate valve inner and are connect with the cock, and the valve rod can drive cock to be carried out relative to valve body
Rotation is equipped with filler to realize the keying of valve, between the valve rod and valve body and is sealed by valve deck, and feature exists
In：The valve rod is equipped with external screw thread, and the valve body is matched equipped with internal thread with the valve rod so that valve rod is in rotation
It can be moved up and down simultaneously relative to valve body, the end of the valve rod is placed in the valve rod hole of the cock upper end, end
Portion is flat tenon structure, and two limit protrusions are arranged in the inner ring interval of the valve rod hole in cock, and the limit protrusion is located at described
The both sides of valve rod, and the angle Stroke Control that valve rod is rotated relative to cock, within the scope of 0- θ, the numerical value at the angles θ is according to the valve
Externally threaded screw pitch determines on bar, and valve rod can push cock to move down when rotating clockwise the angles θ, and valve rod continues clockwise
Rotation, you can drive the cock to turn to fully open position, externally threaded screw pitch moves down the setting of displacement according to cock on valve rod
Value determines.
2. low torque pressure balanced rotary piston valve as described in claim 1, it is characterised in that：The valve rod lower face is equipped with cone
Shape hole, bellmouth is interior to install a sphere, and the bottom of the valve rod hole is equipped with the ball pad coordinated with sphere, and the ball pad upper surface is
Spherical surface, lower surface are plane and adjusting pad are arranged between valve rod hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510461690.5A CN105003676B (en) | 2015-07-31 | 2015-07-31 | A kind of low torque pressure balanced rotary piston valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510461690.5A CN105003676B (en) | 2015-07-31 | 2015-07-31 | A kind of low torque pressure balanced rotary piston valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105003676A CN105003676A (en) | 2015-10-28 |
| CN105003676B true CN105003676B (en) | 2018-07-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510461690.5A Active CN105003676B (en) | 2015-07-31 | 2015-07-31 | A kind of low torque pressure balanced rotary piston valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105003676B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107708A (en) * | 2019-05-27 | 2019-08-09 | 欧冠阀门科技有限公司 | Upper dress formula double-valve-seat taper ball valve |
| CN113389911B (en) * | 2021-06-17 | 2023-02-03 | 浙江福瑞科流控机械有限公司 | High-pressure full-bore forged steel plug valve and working method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2630588Y (en) * | 2003-06-24 | 2004-08-04 | 浙江浙东高中压阀门制造有限公司 | Inverted lubricant plug valve |
| CN201100439Y (en) * | 2007-09-29 | 2008-08-13 | 温州市威驰阀门有限公司 | High-performance pressure balanced rotary piston valve |
| CN102162532A (en) * | 2011-04-02 | 2011-08-24 | 江苏九龙阀门制造有限公司 | Low-temperature high pressure balancing plug valve |
| CN102278495A (en) * | 2010-06-10 | 2011-12-14 | 沃泰阀门(昆山)有限公司 | spring balance type plug valve |
| CN202418703U (en) * | 2012-01-16 | 2012-09-05 | 浙江福瑞科流控机械有限公司 | Pressure balance type plug valve |
| CN103115161A (en) * | 2013-01-28 | 2013-05-22 | 浙江石化阀门有限公司 | Pipeline plug valve |
| CN204784811U (en) * | 2015-07-31 | 2015-11-18 | 江苏神通阀门股份有限公司 | Low moment of torsion pressure balance type plug valve |
-
2015
- 2015-07-31 CN CN201510461690.5A patent/CN105003676B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2630588Y (en) * | 2003-06-24 | 2004-08-04 | 浙江浙东高中压阀门制造有限公司 | Inverted lubricant plug valve |
| CN201100439Y (en) * | 2007-09-29 | 2008-08-13 | 温州市威驰阀门有限公司 | High-performance pressure balanced rotary piston valve |
| CN102278495A (en) * | 2010-06-10 | 2011-12-14 | 沃泰阀门(昆山)有限公司 | spring balance type plug valve |
| CN102162532A (en) * | 2011-04-02 | 2011-08-24 | 江苏九龙阀门制造有限公司 | Low-temperature high pressure balancing plug valve |
| CN202418703U (en) * | 2012-01-16 | 2012-09-05 | 浙江福瑞科流控机械有限公司 | Pressure balance type plug valve |
| CN103115161A (en) * | 2013-01-28 | 2013-05-22 | 浙江石化阀门有限公司 | Pipeline plug valve |
| CN204784811U (en) * | 2015-07-31 | 2015-11-18 | 江苏神通阀门股份有限公司 | Low moment of torsion pressure balance type plug valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105003676A (en) | 2015-10-28 |
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