CN101354080B - Cut-off type power-off reset electric valve - Google Patents
Cut-off type power-off reset electric valve Download PDFInfo
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- CN101354080B CN101354080B CN2007100354449A CN200710035444A CN101354080B CN 101354080 B CN101354080 B CN 101354080B CN 2007100354449 A CN2007100354449 A CN 2007100354449A CN 200710035444 A CN200710035444 A CN 200710035444A CN 101354080 B CN101354080 B CN 101354080B
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Abstract
The invention relates to a turn-off type power failure restoration electric valve which is formed by the connection of an executing mechanism and a valve body; a drive motor, a transmission nut, a transmission screw, a coupling and a valve shaft are connected in sequence for transmission; a position signal feedback device, an analog quantity controller and a power failure restoration device are also installed in the executing mechanism; a pilot valve plate and a spool spring are installed in the middle of an upper valve plate and a lower valve plate; seal rings of polypropylene substrate material are installed on the valve plates; two ends of the transmission nut are additionally installed with a bearing; a butterfly spring is installed in the coupling. The valve has no leakage and can automatically restore when the power fails, thus saving energy and reducing consumption; the valve has easy and labor-saving opening and closing, advanced technology and excellent performance.
Description
Technical field:
The present invention relates to the valve in the mechanical engineering, be specifically related to a kind of cut-off type power-off reset electric valve.
Background technique:
At present domestic and international valve, comprise world-renowned valve manufacturer product, all there is following defective in its modulating valve function: leak, still there is the part medium to pass through behind the valve closing, need close stop valve manually, in case carelessness will cause immeasurable loss to strict equipment or systems such as bromine cooling machines.Simultaneously, most of product does not have the turn-off reset device, only Siemens's valve has the turn-off reset device of oil pump compression reseting spring, during each the unlatching, need to open valve, during power failure by the huge Returnning spring of oil pump compression, oil pump runs out of steam, the spring-back force of Returnning spring is with valve closing, and oil pump very easily damages, and wastes energy.In addition.The structural critical defect of the equal ubiquity of all kinds of valves: 1, integrated type valve plate pressure-bearing is big, according to calculating, the electric two-way valve that bore is DN150 is after closing under the 0.8MPa pressure reduction, valve plate bears the pressure of 1413kg, that is to say, the electric two-way valve of closing a DN150 needs the external force of 1413kg at least, so huge pressure often causes actuator to damage, thereby the making model of valve generally can only be controlled at below the DN150, bigger model required drive is multiplied, and is the power of closing that the valve of DN200 just needs 2512kg as bore.2, open equalizing orifice on the valve plate to reduce pressure reduction, the required power of valve open is reduced, just adopt this mode as Siemens's valve, but because equalizing orifice directly feeds pipeline and work system, and this system relative equilibrium hole is often very big, not only can't reach the effect of balance valve plate pressure at both sides, also making originally just has the valve leak rate of leakage bigger.
Summary of the invention:
Technical problem to be solved by this invention is: solve the problem that above-mentioned prior art exists, and provide a kind of and do not have leakages, have a power failure automatically reset, the oil-less pump pressure spring, save energy and reduce the cost, the cut-off type power-off reset electric valve of long service life.
The technical solution adopted in the utility model is: this cut-off type power-off reset electric valve, connect to form by actuator and valve body two-part, actuator is mounted on the valve seat at valve body top by the lower support frame plate, the drive motor of actuator is connected with transmission nut by key, transmission nut again with the drive screw screw-thread fit, drive screw connects valve shaft by shaft joint, a position signal feedback means and analog amount controller also are installed in the actuator, the turn-off reset device, the turn-off reset device comprises a ups power and control circuit, the position signal feedback means comprises potentiometer and tooth bar, potentiometer shaft gear and tooth bar engagement, tooth bar is connected with shaft joint synchronously by connecting rod, and the turn-off reset device connects the controlling and driving motor; Guide's valve plate and valve shaft welding, first guide plate is connected by valve core spring with valve plate.The polypropylene base seal ring is installed on the valve plate.
In the technique scheme, shaft joint, valve shaft, guide's valve plate, valve plate interconnects and synchronously, the unlatching of valve plate, closing stroke connect tooth bar and synchronous by shaft joint, connecting rod, the tooth bar lifting, the rotation of drive potentiometer shaft, level signal synchronous with the valve plate folding of potentiometer output, this level signal is exported the controlling and driving motor after control circuit is handled.After the power failure, provide the control circuit power supply by ups power, control circuit output connects drive motor, closes mortor operated valve.
In the technique scheme, the transmission nut two ends add thrust ball bearing with flat seat.
In the technique scheme, the butterfly spring is housed in the shaft joint.
Working principle:
Open valve: drive motor is left-handed, change moving downward of drive screw into by transmission nut, drive screw drives valve shaft by shaft joint and moves downward, compression lower valve core spring, form passage slit with valve plate, enter the steam in the stuffing box gland from the gap between stuffing box gland and the following valve cage, media such as water flow out through the gap of valve plate and guide's valve plate, because the gap that the medium that enters stuffing box gland flows out in the before pilot valve plate gap, make the pressure reduction of valve plate both sides ease down to minimum, valve plate can easily be opened, when valve shaft continues to move downward, guide's valve plate drives by adpting flange and opens valve plate, more medium is just gone into the valve body left side by the T type orifice flow of valve cage, makes valve form the passage of opening, and by regulating the valve plate aperture valve flow is controlled.
Shuttoff Valve: drive motor dextrorotation, change moving upward of drive screw into by transmission nut, drive screw drives valve shaft by shaft joint and moves upward, also can move upward simultaneously with guide's valve plate of valve shaft welding, compression upper valve core spring forms sealing with valve plate, and the drive valve plate moves upward, until valve plate fully with the dividing plate applying, and compresses seal reaches the purpose of complete cutting off seal.
Regulating valve: the left-handed or dextrorotation of drive motor promptly drives valve plate rises or descends, and medium is crossed valve body by the T type orifice flow of valve cage, and the T type hole area of valve cage just in time makes the Flow characteristics of valve be linear, reaches the effect of accurate adjusting.
Major technique characteristics of the present invention:
1, fine adjustment, thoroughly cutting off seal.It is that base material adds seal ring that special material makes through many evidences half a year by polypropylene that the present invention adopts special, can work long hours under the condition of 180 ℃ of high-temperature steams, superheated water medium fully, thoroughly cutting off seal.And all other modulating valve of the whole world all do not have thorough turn-off function, must rely on when needing to turn-off and close the stop valve shutoff that prime is installed, some valve adopts viton seal ring all can't work long hours in the high-temperature steam environment, be known as the hardening that only just became fragile in 48 hours of the highest fluorine rubber of heatproof in the experiment, can't proper functioning.
2, the actuator of band turn-off reset function; the cover turn-off reset device of design has voluntarily been installed by actuator; can automatically reset in the time of can making valve under open mode, lose power supply and control signal; throttle down; guarantee that system can cut off MEDIA FLOW automatically to, protection subordinate equipment under situation about having a power failure.
3, welding type valve body pressure-bearing height is in light weight.The present invention adopts the valve body of sheet material, tubing welding production only to be 2/3 of traditional cast valve body weight, and has higher pressure-bearing characteristic, and through 7.5 times of hydrostatic tests of working pressure, valve body does not have distortion, leaks.
4, two logical, the shared valve body of electric three-way valve, actuator can realize exchanging at any time.
5, unlatching torsion is minimum, and the equal up and down mounting plane thrust ball bearing of transmission nut is changed into rolling friction by bearing with sliding friction, makes the frictional force in the mechanism be reduced to minimum, adopts special first guide structure again, makes unlatching torsion be reduced to minimum.
6, multiple protective; guarantee reliable; actuator is connected by the shaft joint that the butterfly spring is installed with valve shaft; with respect to shock-dampening methods such as the spring that generally adopts now, rubber; the butterfly spring has better bearing capacity and spring performance; the impact that the pressure surge that the variation of valve switch running medium flow produces produces is passed to valve shaft from valve plate, after the butterfly spring damping by shaft joint, reaches the scope that actuator can bear.Guide's valve plate adopts spring to be connected with valve plate; eliminated the vibrations when valve plate is opened, actuator then adopts the analog amount controller control of 4～20mA, and position limit switch is protected about being equipped with simultaneously; the normal condition lower valve is controlled by the analog amount controller; even switch puts in place, position limit switch can not move yet, in particular cases; as the malfunctioning actuator excess of stroke that causes of analog amount controller; then position limit switch action, the cutting-off valve power supply, the protection valve is not damaged.
Description of drawings:
Fig. 1 is a structural representation of the present invention
Embodiment:
Referring to Fig. 1, the present invention is connected to form by actuator 1 and valve body 2 two-part, actuator 1 is mounted on the valve seat 4 at valve body top by lower support frame plate 3, the drive motor 5 of actuator 1 is connected with transmission nut 7 by gib headed key 6, transmission nut 7 two ends install thrust ball bearing with flat seat 31 additional, moment of torsion significantly reduces, open easily laborsaving, can twist with hand, and conventional art may not twist with hand, can only lean on oil pump to open, transmission nut 7 again with drive screw 8 with T type screw-thread fit, rotatablely moving of drive motor 5 changed into moving up and down of drive screw 8, drive screw connects valve shaft 10 by shaft joint 9, protecting against shock damping butterfly spring 33 is installed in the shaft joint 9, a position signal feedback means and analog amount controller 11 also are installed in the actuator 1, turn-off reset device 12, turn-off reset device 12 comprises a ups power and control circuit, turn-off reset device 12 connects controlling and driving motor 5, and the position signal feedback means comprises potentiometer 13 and tooth bar 14, position limit switch 15.Valve body 2 comprises valve component and mangetic core assembly, and valve component comprises shrouding 16, upper sealing plate 17, adapter 18, dividing plate 19, pipe connecting flange 20, cylindrical shell 21, valve flange 22 down; Mangetic core assembly comprises valve shaft 10, last guide sleeve 23, valve plate 24, following guide sleeve 26, valve core spring 27, guide's valve plate 28, adpting flange 30; Guide's valve plate 28 and valve shaft 10 welding, guide's valve plate 28 is connected by valve core spring 27, adpting flange 30 with valve plate 24, valve plate top and valve plate bottom are welded with valve cage 25,29 respectively, last valve cage 25 has T type hole, stuffing box gland 32 Spielpassung on following valve cage 29 and the following shrouding 16 are equipped with the polypropylene base seal ring on the valve plate.
Claims (3)
1. cut-off type power-off reset electric valve, connect to form by actuator and valve body two-part, actuator is mounted on the valve seat at valve body top by the lower support frame plate, the drive motor of actuator is connected with transmission nut by key, transmission nut again with the drive screw screw-thread fit, drive screw connects valve shaft by shaft joint, a position signal feedback means and analog amount controller also are installed in the actuator, the turn-off reset device, the turn-off reset device comprises a ups power and control circuit, the turn-off reset device connects the controlling and driving motor, guide's valve plate and valve shaft welding, guide's valve plate is connected by valve core spring with valve plate; It is characterized in that the position signal feedback means comprises potentiometer and tooth bar, potentiometer shaft gear and tooth bar engagement, tooth bar is connected with shaft joint by connecting rod synchronously.
2. cut-off type power-off reset electric valve according to claim 1 is characterized in that: the transmission nut two ends add thrust ball bearing with flat seat.
3. cut-off type power-off reset electric valve according to claim 1 is characterized in that: the butterfly spring is housed in the shaft joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100354449A CN101354080B (en) | 2007-07-27 | 2007-07-27 | Cut-off type power-off reset electric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100354449A CN101354080B (en) | 2007-07-27 | 2007-07-27 | Cut-off type power-off reset electric valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101354080A CN101354080A (en) | 2009-01-28 |
| CN101354080B true CN101354080B (en) | 2011-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100354449A Expired - Fee Related CN101354080B (en) | 2007-07-27 | 2007-07-27 | Cut-off type power-off reset electric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101354080B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537484A (en) * | 2012-01-20 | 2012-07-04 | 浙江恒森实业集团有限公司 | Electromagnetic valve with differential pressure resistance valve core |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345754A (en) * | 2010-08-02 | 2012-02-08 | 上海三洲自控仪表有限公司 | Novel electric control valve with power failure resetting function |
| CN103353010B (en) * | 2013-07-28 | 2015-06-10 | 衢州昀睿工业设计有限公司 | Built-in floating ball valve |
| CN105402463A (en) * | 2015-11-13 | 2016-03-16 | 苏州翠南电子科技有限公司 | Marine electric regulating valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2082347U (en) * | 1990-12-15 | 1991-08-07 | 王鸿君 | Electric operating unit with general power device |
| CN2090910U (en) * | 1991-04-12 | 1991-12-18 | 中国建筑科学研究院空气调节研究所 | Increasing and reducing type electric regulating valve |
| CN2783074Y (en) * | 2004-12-13 | 2006-05-24 | 汪运财 | Automatic protector for preventing gas accident |
-
2007
- 2007-07-27 CN CN2007100354449A patent/CN101354080B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2082347U (en) * | 1990-12-15 | 1991-08-07 | 王鸿君 | Electric operating unit with general power device |
| CN2090910U (en) * | 1991-04-12 | 1991-12-18 | 中国建筑科学研究院空气调节研究所 | Increasing and reducing type electric regulating valve |
| CN2783074Y (en) * | 2004-12-13 | 2006-05-24 | 汪运财 | Automatic protector for preventing gas accident |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537484A (en) * | 2012-01-20 | 2012-07-04 | 浙江恒森实业集团有限公司 | Electromagnetic valve with differential pressure resistance valve core |
| CN102537484B (en) * | 2012-01-20 | 2013-12-04 | 浙江恒森实业集团有限公司 | Electromagnetic valve with differential pressure resistance valve core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101354080A (en) | 2009-01-28 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: BROAD AIR CONDITIONING Co.,Ltd. Assignor: Zhang Yue Contract record no.: 2012430000010 Denomination of invention: Cut-off type power-off reset electric valve Granted publication date: 20110720 License type: Exclusive License Open date: 20090128 Record date: 20120227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20210727 |
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| CF01 | Termination of patent right due to non-payment of annual fee |