CN107448669A - A kind of cam mechanism Its Track Design method realized valve and steadily closed - Google Patents
A kind of cam mechanism Its Track Design method realized valve and steadily closed Download PDFInfo
- Publication number
- CN107448669A CN107448669A CN201610373434.5A CN201610373434A CN107448669A CN 107448669 A CN107448669 A CN 107448669A CN 201610373434 A CN201610373434 A CN 201610373434A CN 107448669 A CN107448669 A CN 107448669A
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- valve
- core assembly
- cam mechanism
- closed
- straight line
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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
- F16K31/52408—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a lift valve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention belongs to the hex system in uranium enrichment field, is related to a kind of cam mechanism Its Track Design method realized valve and steadily closed.Cam mechanism movement locus includes skew lines, Archimedes spiral and changeover portion therebetween.Position of the technical solution of the present invention by valve element when rationally setting pressure angle, Archimedes spiral lift angle height, the valve of cam movement locus to close in track, realizes the steady closing of valve and reliable sealing.The rotary drum vacuum valve door for installing the cam mechanism movement locus has passed through totally 1500 valve opening and closing action tests in a variety of orientation, meets system application requirement.
Description
Technical field
The invention belongs to the hex system in uranium enrichment field, is related in a kind of rotary drum vacuum valve door and realizes that valve is steady
The cam mechanism Its Track Design method of closing.
Background technology
Rotary drum vacuum valve door is the visual plant in uranium enrichment system.The characteristics of such valve closing motion is drive mechanism
Drive core assembly to be stopped the rotation after being rotated by 90 °, then promote the closed disk in core assembly to keep straight on to valve port, realize that valve is closed
Reach passage sealing simultaneously.The effect of cam mechanism is setting core assembly movement locus, makes core assembly in drive mechanism
It is changed into moving along a straight line from rotary motion under drive, and steady closing is realized within the defined time, reaches effective sealing.
Cam mechanism is that rotary motion is changed into straight line fortune using the track of transition skew lines and Archimedes spiral composition
It is dynamic.The actual motion track of existing smaller diameter valve core assembly is that drive mechanism drives the lever motion in core assembly to tiltedly
The transition line position of straight line and Archimedes spiral, valve realize and closed that such case does not give full play to Archimedes
The effect of helical.For small-bore rotary drum vacuum valve door, due to valve element lighter weight, impulsive force is smaller, influences simultaneously unobvious, but
With the increase of valve aperture, the increase of valve element quality, impulsive force is consequently increased, and the stationarity that valve is closed will be by serious shadow
Ring, and cause valve passage to leak.
Therefore, need badly and develop a kind of gentle cam mechanism Its Track Design method to solve the above problems, ensure valve
Door closes steady, passage sealing effectively in the defined time.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of gentle cam mechanism Its Track Design method, pass through conjunction
Suitable track position at reason setting valve-closed position, the anglec of rotation of main shaft in drive mechanism is determined, to ensure that valve exists
Closed in the defined time steadily, passage sealing is effective.
In order to realize this purpose, the present invention adopts the technical scheme that：
A kind of cam mechanism Its Track Design method realized valve and steadily closed, cam mechanism movement locus include oblique
Straight line, Archimedes spiral and changeover portion therebetween, are designed as follows：
(1) basic settings
Core assembly stops the rotation after being rotated by 90 ° from full open position, then promotes the closed disk in core assembly to carry out
Linear motion realizes that valve is closed and passage seals to valve port；
Core assembly promotes the closed disk in core assembly to be moved along a straight line to valve port is left, so from completely closed state
Back valve core component is rotated by 90 ° again, realizes valve opening；
(2) Trajectory Design during core assembly is from full open position to valve-closed state is as follows：
Set the main shaft of valve from fully open position turn clockwise 135 ° when valve close and reach sealing；
(2.1) for the main shaft of valve along clockwise direction from during 0 ° rotates to 90 °, core assembly carries out rotation fortune
Dynamic, valve core channel rotates to medium by flow of media direction and blocks direction, closed disk aligned with port；
(2.2) for the main shaft of valve along clockwise direction from during 90 ° rotate to 112.5 °, core assembly carries out straight line
Motion, lever move on the transition line position between skew lines and skew lines and Archimedes spiral, the envelope in core assembly
Disk is closed to be moved along a straight line；
Skew lines is a straight line with horizontal direction straight line into 40 ° of angles in cam locus, and its original position is valve element
The starting point of lever motion in component；
(2.3) main shaft of valve is along clockwise direction from during 112.5 ° rotate to 135 °, and valve element is along Archimedes
Spiral trajectory is moved along a straight line, and lever moves on Archimedes spiral, and the closed disk in core assembly carries out straight line fortune
It is dynamic；
(3) Trajectory Design and above-mentioned steps (2) during core assembly is from completely closed state to valve open mode
In Trajectory Design it is opposite.
Further, a kind of cam mechanism Its Track Design method realized valve and steadily closed as described above, should
The applicable valve of method includes operating mechanism, spindle assemblies, cam mechanism, core assembly, valve body, thrust block seat；Operating mechanism is
The power of valve switch, pass through the switch time of deceleration device control valve；Spindle assemblies are to external seal, while by operating mechanism
Power be delivered on cam mechanism；Cam mechanism makes core assembly realize the change of movement locus, by core assembly by rotating
Motion is changed into moving along a straight line, and reaches effective sealing；Core assembly includes lever and closed disk, is realized under the drive of cam mechanism
Valve opening is closed, and its motion process is that cam driven lever moves in the track that cam is set, and closed disk is arranged on lever
Middle part, moved forward and backward under the drive of lever；Valve body is the cavity body structure for containing medium and core assembly；Thrust block seat seals valve body
It is stifled, while the rotary motion to core assembly is spacing.
Further, a kind of cam mechanism Its Track Design method realized valve and steadily closed as described above, step
Suddenly in (2.3), the main shaft that Archimedes spiral lift angle is highly arranged to valve is often rotated in a clockwise direction 6 °, lever straight trip
1mm。
The beneficial effect of technical solution of the present invention is：Using the cam mechanism movement locus valve by valve just
Dress, upside-down mounting, each 500 valve opening and closing action tests of side dress have reached keying steadily, seal effective purpose.
Brief description of the drawings
Fig. 1 is the valve mechanism figure for being applicable technical solution of the present invention；
Fig. 2 is rotary drum vacuum valve door cam mechanism movement locus schematic diagram；
Fig. 3 is force analysis schematic diagram at cammed compression angle.
In figure：1- operating mechanisms, 2- spindle assemblies, 3- levers, 4- cam mechanisms, 5- core assemblies, 6-- valve bodies, 7- envelopes
Close disk, 8- thrust block seats, 9- Archimedes spiral starting points, the transition wire between 10- skew lines and skew lines and Archimedes spiral,
Final position of the 11- levers in cam locus motion, original position of the 12- levers in cam locus motion, 13- are tiltedly straight
Line；α 2 is that closed disk starts to be linearly moved to the angle that valve closing main shaft is rotated, and β 1 is traditional skew lines and level
The angle of line, β 2 are skew lines and horizontal angle in the present invention program, and R2 is terminal of the lever in cam locus motion
The length of positional distance main spindle's, L2 are length of original position of the lever in cam locus motion apart from main spindle's,
γ is the angle that lever closes main shaft rotation from Archimedes spiral starting point to valve.
Embodiment
Technical solution of the present invention is described in detail below in conjunction with the drawings and specific embodiments.
Cam mechanism of the present invention is a part for core rotary drum vacuum valve door, and such valve is uranium enrichment field six
Visual plant in uranium fluoride system.It is mainly used in pipeline between the unit and unit in centrifugation factory.Its main function is to work as machine
When occurring abnormal in group, to prevent accident scope from expanding, realized with the accident protection sensor interlocking action in system by unit
Connection.Bypass line, cutting system abnormal position, to meet the operation of accident treatment and cascade are opened in time.The cam mechanism is transported
Dynamic rail mark has reached closes at the appointed time, vibrations when solving valve closing and the requirement for having reached system sealing.This
The rotary drum vacuum valve of kind structure has been subjected to verification experimental verification, and test situation is good and will be applied in engineering.
The applicable valve of this method is as shown in figure 1, including operating mechanism, spindle assemblies, cam mechanism, core assembly, valve
Body, thrust block seat；Operating mechanism is the power of valve switch, passes through the switch time of deceleration device control valve；Spindle assemblies pair
External seal, while the power of operating mechanism is delivered on cam mechanism；Cam mechanism makes core assembly realize movement locus
Change, core assembly is changed into moving along a straight line from rotary motion, reaches effective sealing；Core assembly includes lever and closed disk,
Realize that valve opening is closed under the drive of cam mechanism, its motion process is cam driven lever in the track that cam is set
Motion, closed disk are arranged on its intermediate part, are moved forward and backward under the drive of lever；Valve body is the chamber for containing medium and core assembly
Body structure；Thrust block seat blocks valve body, while the rotary motion to core assembly is spacing.
As shown in Fig. 2 a kind of cam mechanism Its Track Design method realized valve and steadily closed of the present invention, cam machine
Structure movement locus includes skew lines, Archimedes spiral and changeover portion therebetween, is designed as follows：
(1) basic settings
Core assembly stops the rotation after being rotated by 90 ° from full open position, then promotes the closed disk in core assembly to carry out
Linear motion realizes that valve is closed and passage seals to valve port；
Core assembly promotes the closed disk in core assembly to be moved along a straight line to valve port is left, so from completely closed state
Back valve core component is rotated by 90 ° again, realizes valve opening；
(2) Trajectory Design during core assembly is from full open position to valve-closed state is as follows：
Set the main shaft of valve from fully open position turn clockwise 135 ° when valve close and reach sealing；
(2.1) for the main shaft of valve along clockwise direction from during 0 ° rotates to 90 °, core assembly carries out rotation fortune
Dynamic, valve core channel rotates to medium by flow of media direction and blocks direction, closed disk aligned with port；
(2.2) for the main shaft of valve along clockwise direction from during 90 ° rotate to 112.5 °, core assembly carries out straight line
Motion, lever move on the transition line position between skew lines and skew lines and Archimedes spiral, the envelope in core assembly
Close disk and proceed by gun；
Skew lines is a straight line with horizontal direction straight line into 40 ° of angles in cam locus, and its original position is valve element
The starting point of lever motion in component；
In this programme, by reducing the pressure angle in cam locus, i.e., by skew lines and horizontal direction angle by 45 ° of changes
It is improved for 40 °.Skew lines can make core assembly be moved along a straight line in opening-closing process in itself, but its track can not make
Core assembly slows down, and therefore, skew lines is rotated by 90 ° for main shaft just to be started to do the initial period to move along a straight line.The stage uses
Skew lines both ensure that the fast opening and closing of valve, and lever smoothly can also be introduced A Ji by the vibration for not influenceing valve closing
Mead helical.
(2.3) main shaft of valve is along clockwise direction from during 112.5 ° rotate to 135 °, and valve element is along Archimedes
Spiral trajectory is moved along a straight line, and lever moves on Archimedes spiral, and the closed disk in core assembly carries out straight line fortune
Dynamic slows；Therefore, spiral of Archimedes plays a role at valve proximity closed position.Its position is oblique
The rear end of straight line.
Relatively conventional technical scheme, Archimedes spiral lift angle is highly often rotated to the lever in 4 ° of spool mechanisms by main shaft
Straight trip 1mm is changed to the lever straight trip 1mm that main shaft often rotates 6 ° of spool mechanisms.I.e. within the same time, main shaft revolves from 112.5 °
135 ° are gone to, lever has run 22.5 ° on Archimedes spiral, and lever straight trip distance is changed into 3.75mm from 5.625mm.Operation
Distance Shortened, the speed of service reduce, and have reached the shockproof effect of buffering.
(3) Trajectory Design and above-mentioned steps (2) during core assembly is from completely closed state to valve open mode
In Trajectory Design it is opposite.
In Fig. 2, it is 45 ° that closed disk, which starts to be linearly moved to valve to close the value of angle [alpha] 2 that main shaft is rotated, this section
The middle part that the transition wire having been subjected between skew lines and Archimedes spiral reaches Archimedes spiral is put, therefore rectilinear path subtracts
Fast obvious, valve is closed gently without impact.The values of pressure angle β 2 are 40 °, are skew lines and horizontal angle.Thick stick in core assembly
The angle γ value that bar closes main shaft rotation from Archimedes spiral starting point to valve is 22.5 °.
The setting of movement locus is mainly considered as the stationarity that it drives core assembly motion in cam mechanism, and low speed is effective
Compression valve port at sealing surface to ensure to seal.Foregoing invention content is mainly from some following consideration：A. cammed compression angle is reduced
The closing forces (P2) of valve can be made increase, equivalent to increase sealing force, while reduce the tangential component (P1) of valve, this is tangential
Component is a power for influenceing impact, that is, reduces impulsive force and preferably ensure sealing.Force analysis is shown in figure at cammed compression angle
3.B. the process that valve is closed is needed in the stable state of low speed.Determine that core assembly is in Archimedes spiral when valve is closed
On, while determining according to the Spindle rotation angle degree of determination the setting of drive mechanism, it is ensured that valve is put down in the defined time
The compression sealing valve port face of steady low speed, ensures sealing.C. the change of Archimedes spiral lift angle height is in order that core assembly
Speed of being kept straight under the setting of identical drive mechanism is slower, the speed that core assembly collision valve port is closed is slowed down to reduce punching
Hit.
Technical solution of the present invention by rationally set cam movement locus pressure angle, Archimedes spiral lift angle height,
Position of the valve element in track when valve is closed, realize the steady closing of valve and reliable sealing.Cam mechanism fortune is installed
The rotary drum vacuum valve door of dynamic rail mark has passed through totally 1500 valve opening and closing action tests in a variety of orientation, meets that system application will
Ask.
Claims (3)
- A kind of 1. cam mechanism Its Track Design method realized valve and steadily closed, it is characterised in that：Cam mechanism moves Track includes transition skew lines, Archimedes spiral and changeover portion therebetween, is designed as follows：(1) basic settingsCore assembly stops the rotation after being rotated by 90 ° from full open position, then promotes the closed disk in core assembly to carry out straight line Valve port is moved to, realizes that valve is closed and passage seals；Core assembly promotes the closed disk in core assembly to be moved along a straight line to leaving valve port, Ran Houfa from completely closed state Core assembly is rotated by 90 ° again, realizes valve opening；(2) Trajectory Design during core assembly is from full open position to valve-closed state is as follows：Set the main shaft of valve from fully open position turn clockwise 135 ° when valve close and reach sealing；(2.1) main shaft of valve is along clockwise direction from during 0 ° rotates to 90 °, and core assembly is rotated, valve Core passage rotates to medium by flow of media direction and blocks direction, closed disk aligned with port；(2.2) for the main shaft of valve along clockwise direction from during 90 ° rotate to 112.5 °, core assembly carries out straight line fortune Dynamic, lever moves on the transition line position between skew lines and skew lines and Archimedes spiral, the closing in core assembly Disk is moved along a straight line；Skew lines is a straight line with horizontal direction straight line into 40 ° of angles in cam locus, and its original position is core assembly The starting point of middle lever motion；(2.3) main shaft of valve is along clockwise direction from during 112.5 ° rotate to 135 °, and valve element is along Archimedian screw Line tracking is moved along a straight line, and lever moves on Archimedes spiral, and the closed disk in core assembly is moved along a straight line；(3) in the Trajectory Design and above-mentioned steps (2) during core assembly is from completely closed state to valve open mode Trajectory Design is opposite.
- 2. a kind of cam mechanism Its Track Design method realized valve and steadily closed as claimed in claim 1, its feature It is：The applicable valve of this method includes operating mechanism, spindle assemblies, cam mechanism, core assembly, valve body, thrust block seat；Manipulate Mechanism is the power of valve switch, passes through the switch time of deceleration device control valve；Spindle assemblies will be grasped to external seal The power of vertical mechanism is delivered on cam mechanism；Cam mechanism makes core assembly realize the change of movement locus, by core assembly It is changed into moving along a straight line from rotary motion, reaches effective sealing；Core assembly includes lever and closed disk, in the drive of cam mechanism Under realize valve opening close, its motion process is that cam driven lever moves in the track that cam set, closed disk setting In its intermediate part, moved forward and backward under the drive of lever；Valve body is the cavity body structure for containing medium and core assembly；Thrust block seat will Valve body blocks, while the rotary motion to core assembly is spacing.
- 3. a kind of cam mechanism Its Track Design method realized valve and steadily closed as claimed in claim 2, its feature It is：In step (2.3), the main shaft that Archimedes spiral lift angle is highly arranged to valve is often rotated in a clockwise direction 6 °, thick stick Bar straight trip 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373434.5A CN107448669B (en) | 2016-05-31 | 2016-05-31 | A kind of cam mechanism Its Track Design method realizing valve and steadily closing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373434.5A CN107448669B (en) | 2016-05-31 | 2016-05-31 | A kind of cam mechanism Its Track Design method realizing valve and steadily closing |
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| Publication Number | Publication Date |
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| CN107448669A true CN107448669A (en) | 2017-12-08 |
| CN107448669B CN107448669B (en) | 2019-07-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719520A (en) * | 2021-01-04 | 2022-07-08 | 海信容声(广东)冰箱有限公司 | Refrigerator |
| CN117515179A (en) * | 2024-01-05 | 2024-02-06 | 瑞星久宇燃气设备（成都）有限公司 | Asynchronous lever structure voltage regulator and parameter acquisition method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016776A (en) * | 2012-12-07 | 2013-04-03 | 上海鸿润科技有限公司 | Valve core component and low-torque valve |
-
2016
- 2016-05-31 CN CN201610373434.5A patent/CN107448669B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016776A (en) * | 2012-12-07 | 2013-04-03 | 上海鸿润科技有限公司 | Valve core component and low-torque valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719520A (en) * | 2021-01-04 | 2022-07-08 | 海信容声(广东)冰箱有限公司 | Refrigerator |
| CN114719520B (en) * | 2021-01-04 | 2024-03-22 | 海信容声(广东)冰箱有限公司 | Refrigerator with a refrigerator body |
| CN117515179A (en) * | 2024-01-05 | 2024-02-06 | 瑞星久宇燃气设备（成都）有限公司 | Asynchronous lever structure voltage regulator and parameter acquisition method |
| CN117515179B (en) * | 2024-01-05 | 2024-04-02 | 瑞星久宇燃气设备（成都）有限公司 | Asynchronous lever structure voltage regulator and parameter acquisition method |
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| Publication number | Publication date |
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| CN107448669B (en) | 2019-07-12 |
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