CN206478236U - A kind of electric check valve with position instruction - Google Patents
A kind of electric check valve with position instruction Download PDFInfo
- Publication number
- CN206478236U CN206478236U CN201621471118.3U CN201621471118U CN206478236U CN 206478236 U CN206478236 U CN 206478236U CN 201621471118 U CN201621471118 U CN 201621471118U CN 206478236 U CN206478236 U CN 206478236U
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- CN
- China
- Prior art keywords
- valve
- electric check
- check valve
- valve element
- worm
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- 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.)
- Withdrawn - After Issue
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Abstract
A kind of electric check valve with position instruction, including valve body and the housing installed in valve body upper end, form core assembly installation cavity between valve body and housing；Valve seat is provided with valve body；Core assembly is spring energy-storage core assembly, including the valve element and screw rod being coaxially disposed；Valve element lower end is located on valve seat, and top and the screw rod of valve element are connected, and spring is provided between valve element and screw rod, and spring is located in valve element；Electric check valve also includes the worm type of reduction gearing being arranged in housing and the position indicator being arranged on above housing；Screw is offered in the middle part of the worm gear of worm type of reduction gearing vertically, spiral shell worm and wheel screw-internal thread fit forms spiral lifting mechanism；Position indicator includes the first isolation and the second isolation, opening microswitch and the closing microswitch being arranged on screw rod；First isolation, which is used to trigger, opens microswitch, and the second isolation, which is used to trigger, closes microswitch.The utility model can realize two way seal, with position indicating function.
Description
Technical field
The utility model is related to a kind of electrically operated valve, and in particular to a kind of electric check valve with position instruction, for sky
Between long-term in-orbit airship or satellite gas piping control.
Background technology
Certain space station ring control life support system needs a kind of supporting electrically operated valve controlled for gas piping break-make, it is proposed that
Can be repeated several times action, two way seal reliable, vacuum-resistant environment, with position indicating function, can not consume power supply power consumption from
It is locked in the design requirement for opening or closing position.
Existing electric check valve, some can only one-way sealing, it is impossible to which the use for meeting the two way seal of system proposition will
Ask, some electric check valves do not have position indicating function, the physical dimension and quality of some electric check valves are very big in addition, typically
Can not vacuum-resistant environment for a long time, be only used for ground system, it is impossible to meet the long-term in-orbit use requirement in space.
Utility model content
The technical problems to be solved in the utility model, which is to provide, a kind of can realize two way seal, the electricity with position indicating function
Dynamic stop valve, controls to require to meet the break-make of gas piping in space station.
Technical solution of the present utility model is：
A kind of electric check valve with position instruction, including valve body and the housing installed in valve body upper end, valve body and housing
Between formed core assembly installation cavity；Valve seat is provided with valve body；It is characterized in that：
The core assembly is spring energy-storage core assembly, including the valve element and screw rod being coaxially disposed；Valve element lower end is located at
On valve seat, top and the screw rod of valve element are connected, and spring is provided between valve element and screw rod, and spring is located in valve element；
The electric check valve also includes the worm type of reduction gearing being arranged in housing and the position being arranged on above housing
Put instruction device；
Screw, spiral shell worm and wheel screw-internal thread fit, shape are offered vertically in the middle part of the worm gear of the worm type of reduction gearing
Into spiral lifting mechanism；
The position indicator includes the first isolation and the second isolation, the opening microswitch being arranged on screw rod
With closing microswitch；First isolation, which is used to trigger, opens microswitch, and the second isolation, which is used to trigger, closes microswitch.
The first isolation when valve element is opened is moved on screw rod can trigger opening microswitch, and screw rod is displaced downwardly to valve element closing
When the second isolation can trigger closing microswitch.
When valve needs to open, lead to forward current to motor, motor drives worm screw to rotate, worm drive worm gear wheel, then
The trapezoidal thread transmission mechanism constituted using worm gear and screw rod realizes the linear motion that the convert rotational motion of worm gear is valve element
The unlatching of valve.
Based on above-mentioned basic technical scheme, the utility model is also made following optimization and/or limited：
The axis of above-mentioned worm and worm wheel is vertical, and the axis of the worm gear and screw rod is overlapped.
The lower surface of above-mentioned valve element and the bottom upper surface corresponding position of valve body are axially provided with mutual cooperation along valve element
Guide frame.
Above-mentioned guide frame includes the guide rod being arranged on valve element lower surface and is arranged on body base upper surface
Guide groove.
To reduce the frictional force between guide rod and guide groove, prevent valve element from occurring clamping stagnation after repeatedly acting or stuck existing
As being provided with elastic anti-friction ring on above-mentioned guide rod.
Guide sleeve is provided between above-mentioned screw rod and housing, guide sleeve is connected with housing, coordinates with screw clearance.Guide sleeve
It is engaged with guide frame, valve core movement is directed to the guidance mode of upper and lower ends, ensure that valve element is close after repeatedly acting
Seal the uniformity of impression, it is ensured that the sealing reliability after the multiple action of electric check valve.
Above-mentioned guide sleeve is fixedly connected with housing in end joints using stop pin.
Bearing is set with outside abrasion during worm gear wheel, above-mentioned worm gear to reduce, bearing is respectively in worm gear teeth axial direction
Both sides.
The top of above-mentioned valve element and the bottom of screw rod are connected by connecting pin.
In order that electric check valve has the ability for the environment of resistance to space vacuum can be in-orbit for a long time, above-mentioned worm and gear slows down
The compound of vacuum grease lubrication is added using the wear-resisting solid coating of DLC on device, trapezoidal thread transmission mechanism and bearing
Lubricating system, on the one hand the frictional resistance between reduction metal parts, improves kinematic dexterity, on the other hand can effectively prevent true
Air cooling welds phenomenon.
The advantage of the utility model compared with prior art is：
(1) two way seal can be realized, with position indicating function, quality and small volume
Existing electric check valve is not due to using this structure, when valve export pressure is higher than valve inlet pressure, valve
Door can not seal, this be due to screw rod and worm gear composition each part of thread transmission between there is gap, when valve export pressure
When power is higher than valve inlet pressure, the medium power acted on valve element can cause valve element to be moved toward gap location, cause electronic cut-off
Valve is leaked.And the utility model when valve export pressure be higher than valve inlet pressure when, valve element in the presence of medium power must gram
Larger spring force is taken to be only possible to toward gap location motion, therefore than existing electric check valve the utility model in valve export
Pressure can realize two-way reliable sealing higher than in valve inlet pressure certain limit.
The utility model is using two microswitches composition position indicators, and microswitch structure is compact, opens inside it
Closing contact can be switched fast, and be active in one's movements, and on the one hand reliable operation, microswitch can provide the power-off signal of motor, another
Aspect can feed back the location status of valve, realize the position indicating function of electric check valve.
Employ worm type of reduction gearing on the utility model drive mechanism, and by trapezoidal thread drive mechanism by motor
Convert rotational motion be valve element linear motion, worm type of reduction gearing and thread transmission are effort-saving mechanism, efficiency
Height, the motor torque being so accomplished by is smaller, and the quality and volume of motor are corresponding also smaller, on the other hand using worm and gear
Decelerator is it is also ensured that electric check valve can not consume the long-term self-locking of power supply power consumption after opening or closing.
(2) can be in-orbit for a long time
The utility model is employed on the driving parts such as bearing, worm type of reduction gearing and trapezoidal thread transmission mechanism
The composite lubricated mode of wear-resisting solid coating+vacuum grease, on the one hand the frictional resistance between reduction metal parts, improves motion
Flexibility, on the other hand can effectively prevent vacuum cold welding phenomenon from occurring.
(3) reliability is high
Valve core movement of the present utility model is oriented to by the way of upper and lower ends guiding, it is ensured that valve element is sealed after repeatedly acting
The uniformity of impression, it is ensured that the sealing reliability after the multiple action of electric check valve, and pacify on the guide rod of valve element lower end
Elastic anti-friction ring has been filled, to reduce the frictional force between valve element and valve body, has prevented valve element from occurring clamping stagnation or stuck after repeatedly acting
Phenomenon, it is ensured that the Reliability of Microprocessor of electric check valve.
(4) service life is long
The existing electric check valve for not using spring energy-storage valve core structure, valve turn-off transient is hard between valve element and valve body
Contact, so as to cause to contact firmly between screw-drive mechanism and each metal parts of worm type of reduction gearing, easily causes contact surface
Abrasion, shortens the life-span of valve.The spring energy-storage valve core structure that the utility model is used, due to screw rod and valve element be elasticity even
Connect, when valve is closed, the contact force between each metal parts slowly increases with the increase of spring force, effectively prevent hard
Contact, extends the service life of electric check valve.
Brief description of the drawings
Fig. 1 is the electric check valve structure principle chart with position instruction；
Fig. 2 is the structure chart that worm type of reduction gearing and brushless electric machine are connected；
Fig. 3 is spring energy-storage valve core structure figure；
Fig. 4 is position indicator structure chart；
Wherein reference is：
1- valve bodies, 2- valve elements, 201- elastic anti-frictions ring, 3- springs, 4- guide sleeves, 5- stop pins, the worm screws of 6- first, 7- snails
Wheel, 8- switch brackets, 9- screws, 10- isolations, the screw rods of 11- second, 12- pads, 13- bearings, 14- connecting pins, 15- housings,
The microswitches of 16- first (closing), the microswitches of 17- second (opening), 18- cover plates, 19,20-O shapes rubber ring, 21- is brushless electricity
Machine.
Embodiment
As shown in Figure 1 to 4, it is the electric check valve structure of the present utility model with position instruction, it is mainly by valve body
1st, valve element 2, spring 3, guide sleeve 4, stop pin 5, worm screw 6, worm gear 7, switch bracket 8, screw 9, isolation 10, screw rod 11, pad
Piece 12, bearing 13, connecting pin 14, housing 15, closing microswitch 16, opening microswitch 17, cover plate 18, O-shaped rubber ring
(19,20), brushless electric machine 21 are constituted.
Valve element 2, spring 3, guide sleeve 4, stop pin 5, screw rod 11 constitute spring energy-storage core assembly.Valve is closed and opened
Under state, spring 3 is always compressive state, and spring force is bigger, and two way seal effect is better, but needs gram when valve is closed simultaneously
The spring force of clothes is bigger, therefore should should be limited spring force in the reasonable scope according to design requirement in practice.The present embodiment
Middle spring force 300N-350N, it is ensured that the two way seal when valve export pressure is more than valve inlet pressure 0-0.2Mpa.
Brushless electric machine 21, worm gear 7 and the composition worm type of reduction gearing of worm screw 6.
Switch bracket 8, closing microswitch 16, opening microswitch 17 and isolation 10 constitute position indicator.
Switch bracket 8 is arranged on the upper end of housing 15, and the bottom of switch bracket 8 is provided with through hole, and the through hole is stretched out in the upper end of screw rod 11；Triggering
Piece 10 is fixedly mounted on screw rod upper end by screw 9, and it has two triggering ends；Close microswitch 16 and open microswitch
17 are arranged on switch bracket 8 and are distributed in the both sides of screw axis, close microswitch 16 and are located at opening microswitch 17
Lower section.
When needing the valve to open, lead to forward current to brushless electric machine 21, brushless electric machine 21 drives worm screw 6 to rotate, and worm screw 6 drives
Dynamic worm gear 7 is rotated, and it is valve the convert rotational motion of worm gear to recycle the trapezoidal thread transmission mechanism that worm gear 7 and screw rod 11 are constituted
The linear motion of core 2, realizes the unlatching of valve；
When valve wide open, a triggering end of the isolation 10 installed on screw rod 11 is touched opening microswitch 17 and closed
Close, and give motor electric power system power-off signal, motor power-off simultaneously.Because the decelerator that worm gear 7 and worm screw 6 constitute has self-locking
Function, electric check valve can not consume electric energy and be maintained at open position, and indicate valve by opening microswitch 17
Open mode.
Similarly, it is necessary to when valve is closed, lead to reverse current to brushless electric machine 21, motor reversal, driving worm and gear slows down
Device invert, valve element 2 to close direction move, when valve element 2 moves to closed position, the isolation 10 installed on screw rod 11 it is another
One triggering end is touched closing microswitch 16 and closed, and gives motor electric power system power-off signal simultaneously, and motor power-off passes through snail
The auto-lock function of worm and gear decelerator, valve element is reliably maintained in its closed position, and indicates valve by closing microswitch 16
Closed mode.
Claims (10)
1. a kind of electric check valve with position instruction, including valve body and the housing installed in valve body upper end, valve body and housing it
Between formed core assembly installation cavity；Valve seat is provided with valve body；It is characterized in that：
The core assembly is spring energy-storage core assembly, including the valve element and screw rod being coaxially disposed；Valve element lower end is located at valve seat
On, top and the screw rod of valve element are connected, and spring is provided between valve element and screw rod, and spring is located in valve element；
The position that the electric check valve also includes the worm type of reduction gearing being arranged in housing and is arranged on above housing refers to
Showing device；
Screw is offered in the middle part of the worm gear of the worm type of reduction gearing vertically, spiral shell worm and wheel screw-internal thread fit forms spiral shell
Revolve elevating mechanism；
The position indicator includes the first isolation and the second isolation, opening microswitch and the pass being arranged on screw rod
Close microswitch；First isolation, which is used to trigger, opens microswitch, and the second isolation, which is used to trigger, closes microswitch.
2. the electric check valve according to claim 1 with position instruction, it is characterised in that：The axle of the worm and worm wheel
Line is vertical, and the axis of the worm gear and screw rod is overlapped.
3. the electric check valve according to claim 1 or 2 with position instruction, it is characterised in that：The lower end of the valve element
Face and the bottom upper surface corresponding position of valve body are axially provided with the guide frame of mutual cooperation along valve element.
4. the electric check valve according to claim 3 with position instruction, it is characterised in that：The guide frame includes setting
Put the guide rod on valve element lower surface and the guide groove being arranged on body base upper surface.
5. the electric check valve according to claim 4 with position instruction, it is characterised in that：It is provided with the guide rod
Elastic anti-friction ring.
6. the electric check valve according to claim 3 with position instruction, it is characterised in that：Between the screw rod and housing
Guide sleeve is provided with, guide sleeve is connected with housing, coordinates with screw clearance.
7. the electric check valve according to claim 6 with position instruction, it is characterised in that：The guide sleeve exists with housing
End joints are fixedly connected using stop pin.
8. the electric check valve according to claim 1 with position instruction, it is characterised in that：Axle is set with outside the worm gear
Hold.
9. the electric check valve according to claim 1 with position instruction, it is characterised in that：The top of the valve element and spiral shell
The bottom of bar is connected by connecting pin.
10. the electric check valve according to claim 9 with position instruction, it is characterised in that：The worm and gear slows down
Vacuum grease is added to lubricate using the wear-resisting solid coating of DLC on device, trapezoidal thread transmission mechanism and bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621471118.3U CN206478236U (en) | 2016-12-30 | 2016-12-30 | A kind of electric check valve with position instruction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621471118.3U CN206478236U (en) | 2016-12-30 | 2016-12-30 | A kind of electric check valve with position instruction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206478236U true CN206478236U (en) | 2017-09-08 |
Family
ID=59750942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621471118.3U Withdrawn - After Issue CN206478236U (en) | 2016-12-30 | 2016-12-30 | A kind of electric check valve with position instruction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206478236U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443513A (en) * | 2018-04-17 | 2018-08-24 | 诸暨市海王消防设备有限公司 | A kind of motor-driven valve |
-
2016
- 2016-12-30 CN CN201621471118.3U patent/CN206478236U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443513A (en) * | 2018-04-17 | 2018-08-24 | 诸暨市海王消防设备有限公司 | A kind of motor-driven valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170908 Effective date of abandoning: 20230321 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170908 Effective date of abandoning: 20230321 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |