CN103603992A - Lead screw nut type driving mechanism of valve - Google Patents
Lead screw nut type driving mechanism of valve Download PDFInfo
- Publication number
- CN103603992A CN103603992A CN201310651323.2A CN201310651323A CN103603992A CN 103603992 A CN103603992 A CN 103603992A CN 201310651323 A CN201310651323 A CN 201310651323A CN 103603992 A CN103603992 A CN 103603992A
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- CN
- China
- Prior art keywords
- driving mechanism
- valve
- limiting sleeve
- limit cover
- hole
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/502—Mechanical actuating means with screw-spindle or internally threaded actuating means actuating pivotable valve members
Abstract
The invention discloses a lead screw nut type driving mechanism of a valve. The lead screw nut type driving mechanism comprises a box body, a lead screw, a nut and a shifting fork, wherein the nut is provided with a shifting shaft; the shifting fork is fixedly connected with a valve rod, and the shifting shaft is embedded and contained in the shifting fork; an internal thread through hole is respectively formed in the two ends of the box body; the two internal thread through holes are internally provided with a left limiting sleeve and a right limiting sleeve in a manner of matching with threads, and are internally and respectively provided with keys for locking the left limiting sleeve and the right limiting sleeve; the two ends of the lead screw are respectively supported by the left limiting sleeve and the right limiting sleeve in a rotatable manner. The lead screw nut type driving mechanism disclosed by the invention has the advantages that the left limiting sleeve or the right limiting sleeve is directly utilized for contacting with the nut to carry out positioning, the contact area of the left limiting sleeve and the right limiting sleeve with the nut is large, and fine threads are adopted for matching among the left limiting sleeve, the right limiting sleeve and the box body; and high-strength torque test can be born and simultaneously the adjustment is convenient.
Description
Technical field
The present invention relates to valve actuation techniques field, particularly relate to the feed screw nut driving mechanism of the convenient adjusting rotary type of a kind of energy valve opening.
Background technique
Drive unit is mainly used in the switch of control valve, Chinese patent 201010559960.3 discloses a kind of drive unit of valve, it has a guide rod, guide rod is arranged on abreast to the inside of casing, one slide block is installed on guide rod, slide block has the degrees of freedom of sliding along guide rod, on the casing of guide rod intermediate portion, screw mandrel is installed, screw mandrel passes slide block in the mode of screw-thread fit, one motor is installed on the casing of screw mandrel one end, the output shaft of motor and the end of leading screw are connected and fixed, by live axle and guide rod, leading screw is with vertical state, with bearing, be arranged on above casing, the bearing at live axle two ends is fixing with right bearing lid with left bearing lid respectively, on live axle, with key, fixedly shift fork is installed, in the side of slide block, one pulling axis is installed, grade position of opening of shift fork is connected across above pulling axis, case lid is by the upper oral part sealing of casing.
But above-mentioned feed screw nut drive unit mainly exists and is not easy to controlling opening of valve in design, generally directly to carry out form spacing or the direct position limiting slide block of screw with valve plate interference by pin, this just causes the fragile problem such as many of part, especially when screw nut device is applied to underground valve, cannot observe easily the indication of valve opening, in using process, be easy to occur the existing picture of overload, this just requires drive unit to have very strong overload capacity, while is due to the working environment of underground device, also need feed screw nut drive unit will be convenient to maintenance intervention.
Summary of the invention
The object of the invention is for the technological deficiency existing in prior art, and the feed screw nut driving mechanism of the convenient adjusting rotary type of a kind of energy valve opening is provided.
For realizing the technological scheme that object of the present invention adopts, be:
A kind of feed screw nut formula driving mechanism of valve, comprise casing, leading screw, on it, be provided with the nut of pulling axis, and be fixedly connected with valve rod and described pulling axis embedding is contained to the shift fork in it, wherein, described tank ends is formed with respectively internal thread through hole, in two described internal thread through hole, be respectively arranged with to screw-thread fit with it left limit cover and right limit cover, in two described internal thread through hole, be respectively arranged with key so that described left limit cover and right limit cover are locked, rotatable support is overlapped by described left limit cover and right limit respectively in described leading screw two ends.
Described internal thread through hole is fine thread through hole.
Described key is gib head key.
The outside of two described internal thread through hole is fixedly installed respectively left end cap and right end cap with by casing sealing, and described leading screw to be connected with driving mechanism, is provided with seal ring through described right end cap between described leading screw and right end cap.
Between described right end cap and casing, be provided with the divided ring of described leading screw axially locating.
In the central through bore of described left limit cover and right limit cover, be provided with copper sheathing to reduce the friction of itself and leading screw.
Compared with prior art, the invention has the beneficial effects as follows:
Feed screw nut formula drive unit of the present invention utilizes left limit cover or right limit cover directly to contact and position with nut, between the large and left and right stop collar of the area of contact of left and right stop collar and nut and casing, adopt metric system fine thread to coordinate, it can bearing high strength torsion-testing, when maximum input torque reaches 610Nm, drive unit can become part not to be damaged.It can reach the security level of IP68, completes and is applicable to long-term underground activities.Its adjusting is simultaneously convenient, only need be by left end cap or the corresponding dismounting of right end cap, and it can carry out the adjusting of valve stroke in the situation that not dismantling case lid, and fast and easy is simple to operate effective.
Accompanying drawing explanation
Figure 1 shows that the cross section structure schematic diagram of the feed screw nut formula driving mechanism of valve of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, the driving mechanism of valve of the present invention comprises casing 1, leading screw 11, on it, be provided with the nut 15 of pulling axis, and be fixedly connected with valve rod and described pulling axis embedding is contained to the shift fork 10 in it, wherein, described nut comprises nut body and the reversed column that is fixedly connected with or is integrally formed with described nut body, the arm beam of two parallel band flutings that described shift fork stretches out, the reversed column end of described nut is limited in the formed gap of arm beam, simultaneously, in the reversed column of described nut, vertically to both sides, be provided with it two pins, described pin is placed in the guide-track groove of arm beam, nut body coordinates in leading screw simultaneously.When leading screw rotates, restriction due to two pins on nut and guide-track groove, nut is only done along the axial motion of leading screw axial direction, thereby drive shift fork to rotate, described tank ends is formed with respectively through hole, described through hole at least the inner is internal thread through hole, simultaneously described casing top be also provided with case lid in case with the assembling of internal components, in two described internal thread through hole, be respectively arranged with to screw-thread fit with it left limit cover 12 and right limit cover 2, , on described left limit cover and right limit cover outer side surface, be provided with the metric system fine thread coordinating with it, simultaneously between described left limit cover and right limit cover and described internal thread through hole, being respectively arranged with gib head key relatively rotates voluntarily to prevent its generation, rotatable support is overlapped by described left limit cover and right limit respectively in described leading screw two ends.The setting of described gib head key is provided with accordingly respectively at least one keyway on the inner side surface of internal thread through hole and the outer side surface of left limit cover or right limit cover, utilizes the cooperation of keyway and key to realize locking.
Leading screw of the present invention rotates by handwheel or other operation equipment, drive nut along leading screw move, pulling axis drive shift fork to move together, shift fork band ovable valve stem is realized valve plate and is opened and closed.While needing adjustment stroke, left limit cover or the right limit cover that can be contained in tank ends by rotation regulate, and lock after forwarding required stroke to gib head key.
Feed screw nut formula drive unit of the present invention utilizes left limit cover or right limit cover directly to contact and position with nut, between the large and left and right stop collar of the area of contact of left and right stop collar and nut and casing, adopt fine thread to coordinate, it can bearing high strength torsion-testing, when maximum input torque reaches 610Nm, drive unit can become part not to be damaged.It can reach the security level of IP68, completes and is applicable to long-term underground activities.Its adjusting is simultaneously convenient, only need be by left end cap or the corresponding dismounting of right end cap, and it can carry out the adjusting of valve stroke in the situation that not dismantling case lid, and fast and easy is simple to operate effective.
Specifically, be to guarantee the sealing of casing, the outside of two described internal thread through hole is fixedly installed respectively left end cap 13 and right end cap 6 with by casing sealing, and between casing and two end cap, adopts respectively the rubber sheet gasket of NBR to improve sealing effect.The left end of described leading screw is confined to box house by left end cap, and described leading screw to be connected with driving mechanism, is provided with seal ring 7 through described right end cap between described leading screw and right end cap.Simultaneously, between described right end cap and casing, be provided with the divided ring 4 of described leading screw axially locating, described right-hand member through hole is that outer end diameter becomes large shoulder hole, on leading screw corresponding part, be formed with spacing scrobicular ring, utilize divided ring and coordinating of spacing scrobicular ring to realize leading screw axially locating, described divided ring is spacing by shoulder and the right end cap of described shoulder hole, preferably, is also provided with anti-wear gasket 3 between described divided ring and casing.
Preferably, in the central through bore of described left limit cover and right limit cover, be provided with copper sheathing to reduce the friction of itself and leading screw.As also adopted 45# steel lining process for copper, described leading screw adopts 40Gr through quenching with Subsequent tempering simultaneously, hardness reaches 300-350HB, described divided ring adopts 45# through quenching with Subsequent tempering, hardness reaches 250-300HB, after adopting above-mentioned hard to process, can improve bulk strength, improve its security level and tolerance, increase the service life.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. the feed screw nut formula driving mechanism of a valve, it is characterized in that, comprise casing, leading screw, on it, be provided with the nut of pulling axis, and be fixedly connected with valve rod and described pulling axis embedding is contained to the shift fork in it, wherein, described tank ends is formed with respectively internal thread through hole, in two described internal thread through hole, be respectively arranged with to screw-thread fit with it left limit cover and right limit cover, in two described internal thread through hole, be respectively arranged with key so that described left limit cover and right limit cover are locked, rotatable support is overlapped by described left limit cover and right limit respectively in described leading screw two ends.
2. the feed screw nut formula driving mechanism of valve as claimed in claim 1, is characterized in that, described internal thread through hole is fine thread through hole.
3. the feed screw nut formula driving mechanism of valve as claimed in claim 1, is characterized in that, described key is gib head key.
4. the feed screw nut formula driving mechanism of valve as claimed in claim 3, it is characterized in that, the outside of two described internal thread through hole is fixedly installed respectively left end cap and right end cap so that casing is sealed, described leading screw to be connected with driving mechanism, is provided with seal ring through described right end cap between described leading screw and right end cap.
5. the feed screw nut formula driving mechanism of valve as claimed in claim 4, is characterized in that, is provided with the divided ring of described leading screw axially locating between described right end cap and casing.
6. the feed screw nut formula driving mechanism of valve as claimed in claim 1, is characterized in that, is provided with copper sheathing to reduce the friction of itself and leading screw in the central through bore of described left limit cover and right limit cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310651323.2A CN103603992A (en) | 2013-12-04 | 2013-12-04 | Lead screw nut type driving mechanism of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310651323.2A CN103603992A (en) | 2013-12-04 | 2013-12-04 | Lead screw nut type driving mechanism of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103603992A true CN103603992A (en) | 2014-02-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310651323.2A Pending CN103603992A (en) | 2013-12-04 | 2013-12-04 | Lead screw nut type driving mechanism of valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103603992A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842202A (en) * | 2015-05-11 | 2015-08-19 | 武汉理工大学 | Automatic tool changing magazine |
| CN107524774A (en) * | 2017-09-08 | 2017-12-29 | 东营仁合石油机械设备有限公司 | A kind of drive system |
| CN112145713A (en) * | 2020-09-10 | 2020-12-29 | 耐氟隆集团有限公司 | Zero-leakage high-performance fluorine-lined butterfly valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4239178A (en) * | 1978-05-13 | 1980-12-16 | Honeywell Inc. | Manual actuator for motor driven control valve |
| CN2849270Y (en) * | 2005-11-30 | 2006-12-20 | 江苏神通阀门有限公司 | Nuclear pneumatic device |
| CN101144554A (en) * | 2007-10-12 | 2008-03-19 | 杨荣水 | Hydraulic control device of butterfly valve |
| CN201439843U (en) * | 2009-06-19 | 2010-04-21 | 湖北洪城通用机械股份有限公司 | Chute type lead screw transmission device |
| CN101881352A (en) * | 2010-06-22 | 2010-11-10 | 季忠庸 | Pneumatic actuator |
| CN103174869A (en) * | 2013-03-25 | 2013-06-26 | 上海凌源设备工程有限公司 | Valve driver |
| CN203686319U (en) * | 2013-12-04 | 2014-07-02 | 天津富赛克流体控制设备有限公司 | Screw rod nut type driving mechanism for valve |
-
2013
- 2013-12-04 CN CN201310651323.2A patent/CN103603992A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4239178A (en) * | 1978-05-13 | 1980-12-16 | Honeywell Inc. | Manual actuator for motor driven control valve |
| CN2849270Y (en) * | 2005-11-30 | 2006-12-20 | 江苏神通阀门有限公司 | Nuclear pneumatic device |
| CN101144554A (en) * | 2007-10-12 | 2008-03-19 | 杨荣水 | Hydraulic control device of butterfly valve |
| CN201439843U (en) * | 2009-06-19 | 2010-04-21 | 湖北洪城通用机械股份有限公司 | Chute type lead screw transmission device |
| CN101881352A (en) * | 2010-06-22 | 2010-11-10 | 季忠庸 | Pneumatic actuator |
| CN103174869A (en) * | 2013-03-25 | 2013-06-26 | 上海凌源设备工程有限公司 | Valve driver |
| CN203686319U (en) * | 2013-12-04 | 2014-07-02 | 天津富赛克流体控制设备有限公司 | Screw rod nut type driving mechanism for valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842202A (en) * | 2015-05-11 | 2015-08-19 | 武汉理工大学 | Automatic tool changing magazine |
| CN107524774A (en) * | 2017-09-08 | 2017-12-29 | 东营仁合石油机械设备有限公司 | A kind of drive system |
| CN112145713A (en) * | 2020-09-10 | 2020-12-29 | 耐氟隆集团有限公司 | Zero-leakage high-performance fluorine-lined butterfly valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140226 |