CN203686319U - Screw rod nut type driving mechanism for valve - Google Patents
Screw rod nut type driving mechanism for valve Download PDFInfo
- Publication number
- CN203686319U CN203686319U CN201320796459.8U CN201320796459U CN203686319U CN 203686319 U CN203686319 U CN 203686319U CN 201320796459 U CN201320796459 U CN 201320796459U CN 203686319 U CN203686319 U CN 203686319U
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- CN
- China
- Prior art keywords
- driving mechanism
- valve
- limit cover
- limiting sleeve
- internal thread
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- Expired - Lifetime
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a screw rod nut type driving mechanism for a valve. The screw rod nut type driving mechanism comprises a box body, a screw rod, a nut, and a shift fork, wherein a shifting shaft is arranged on the nut; the shift fork is fixedly connected with a valve rod and the shifting shaft is embedded in the shift fork; internal thread through holes are formed in the two ends of the box body respectively; a left limiting sleeve and a right limiting sleeve are respectively arranged in and in screw thread fit with the two internal thread through holes; keys are respectively arranged in the two internal thread through holes for locking the left limiting sleeve and the right limiting sleeve; the two ends of the screw rod are respectively and rotatably supported by the left limiting sleeve and the right limiting sleeve. According to the screw rod nut type driving mechanism disclosed by the utility model, the left limiting sleeve or the right limiting sleeve is in direct contact with the nut for positioning, the contact area between the left/right limiting sleeve and the nut is large, and the left/right limiting sleeve is in fine screw thread fit with the box body, so that the driving mechanism can bear a high-strength torque test, and meanwhile, the adjustment of the driving mechanism is convenient.
Description
Technical field
The utility model relates to valve actuation techniques field, particularly relates 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, be arranged on above casing with bearing, the bearing at live axle two ends is fixed with left bearing lid and right bearing lid respectively, on live axle, with key, fixing 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 in the time that 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.
Model utility content
The purpose of this utility model 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 the purpose of this utility model 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 beneficial effects of the utility model are:
Feed screw nut formula drive unit of the present utility model 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, in the time that 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 utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the driving mechanism of valve of the present utility model 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, the reversed column that described nut comprises nut body and 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 gap that arm beam forms, simultaneously, in the reversed column of described nut, be vertically provided with it two pins to both sides, described pin is placed in the guide-track groove of arm beam, nut body coordinates in leading screw simultaneously.In the time that leading screw rotates, due to the restriction of two pins on nut and guide-track groove, nut only does 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 utility model 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 forward to after required stroke and lock with gib head key.
Feed screw nut formula drive unit of the present utility model 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, in the time that 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 preferred implementation of the present utility model; it should be noted that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
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 |
|---|---|---|---|
| CN201320796459.8U CN203686319U (en) | 2013-12-04 | 2013-12-04 | Screw rod nut type driving mechanism for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320796459.8U CN203686319U (en) | 2013-12-04 | 2013-12-04 | Screw rod nut type driving mechanism for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686319U true CN203686319U (en) | 2014-07-02 |
Family
ID=51008218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320796459.8U Expired - Lifetime CN203686319U (en) | 2013-12-04 | 2013-12-04 | Screw rod nut type driving mechanism for valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686319U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603992A (en) * | 2013-12-04 | 2014-02-26 | 天津富赛克流体控制设备有限公司 | Lead screw nut type driving mechanism of valve |
-
2013
- 2013-12-04 CN CN201320796459.8U patent/CN203686319U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603992A (en) * | 2013-12-04 | 2014-02-26 | 天津富赛克流体控制设备有限公司 | Lead screw nut type driving mechanism of valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |