CN204437454U - A kind of straight journey mechanism of many revolution electric actuator - Google Patents
A kind of straight journey mechanism of many revolution electric actuator Download PDFInfo
- Publication number
- CN204437454U CN204437454U CN201520105698.3U CN201520105698U CN204437454U CN 204437454 U CN204437454 U CN 204437454U CN 201520105698 U CN201520105698 U CN 201520105698U CN 204437454 U CN204437454 U CN 204437454U
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- screw rod
- support
- electric actuator
- valve
- screw
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- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of improvement of straight journey mechanism of many revolution electric actuator, this kind of straight journey mechanism includes support, bearing support, screw rod and the nut matched with screw rod, described bearing support is rack-mount, described nut is connected with the main shaft turning round electric actuator more, described screw rod is vertically arranged in bearing support, and make upper and lower straight line motion, the lower end of described screw rod is connected with the valve rod of valve through support, it is characterized in that described support is provided with the displacement display module of display screw displacement amount, the internal surface of described support has spacing plane, described screw rod is provided with the stop nut for controlling screw displacement matched with the spacing plane of support, internal thread and the screw rod of described stop nut match.Screw rod of the present utility model adopts mechanical type spacing, avoids excessively drawing high valve rod or compressing valve rod, improves the working life of Safety performance and valve.
Description
Technical field
The utility model relates to a kind of improvement invention of straight journey mechanism, particularly be a kind of straight journey mechanism of many revolution electric actuator.
Background technique
The straight journey mechanism of many revolutions electric actuator is the opening and closing being same as valve, namely drives valve rod to move by the screw rod of straight journey mechanism, thus realizes the opening and closing of valve.Existing straight journey mechanism adopts electric limiting mostly, by the stroke of electrical control screw rod, i.e. and the movement of control valve valve rod.But being in hidden state after valve installation is on pipeline, is the state that can't see valve startup from outside, thus when power failure needs Non-follow control, staff just cannot control the stroke of screw rod movement, namely cannot grasp the state of valve, and this blind operation exists great potential safety hazard; And, when electric limiting is adjusted random, the stroke of the screw rod of straight journey mechanism just from preset different, just there will be and valve rod is drawn too high, cause valve rod to draw bad, even valve rod can be pulled out valve body, thus cause the consequence that can not imagine, or occur valve rod to push up even by valve rod bending downwards, both of these case all can damage valve, causes heavy losses.
Summary of the invention
In view of the technical problem that background technique exists, the technical problems to be solved in the utility model is to provide a kind of directly display screw displacement amount, and has the straight journey mechanism of many revolutions electric actuator of mechanical position limitation function.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme to realize: the straight journey mechanism turning round electric actuator this kind more, include support, bearing support, screw rod and the nut matched with screw rod, described bearing support is rack-mount, described nut is connected with the main shaft turning round electric actuator more, described screw rod is vertically arranged in bearing support, and make upper and lower straight line motion, the lower end of described screw rod is connected with the valve rod of valve through support, it is characterized in that described support is provided with the displacement display module of display screw displacement amount, the internal surface of described support has spacing plane, described screw rod is provided with the stop nut for controlling screw displacement matched with the spacing plane of support, internal thread and the screw rod of described stop nut match.
The pointer that described displacement display module includes scale-board and matches with scale-board, described scale-board is vertically arranged on support, and described pointer is arranged on connecting sleeve, and described connecting sleeve is arranged on screw rod.
The internal surface of described bearing support is provided with the guiding groove vertically arranged, and the screw rod that described guiding groove is corresponding is provided with the needle bearing matched with it, and described needle bearing is placed in this guiding groove, and moves along guiding groove.
Described connecting sleeve is connected with screw flight, and when operating mode, described stop nut and screw rod are locked by the first lock screw, and described connecting sleeve and screw rod are locked by the second lock screw.
The below of described support is equipped with flange bracket.
The utility model adopts stop nut to coordinate the spacing movement of the mechanical type achieving screw rod with the spacing plane of support, and coordinate the displacement display module on support, staff can be allowed to see the displacement amount of screw rod more intuitively, so, even if under power down mode, staff also clearly can learn the stroke of screw rod movement and the state of valve, and adopts that mechanical type is spacing also just avoids electric limiting Problems existing in background technique, as this eliminated the damage hidden danger existed valve; Screw rod of the present utility model drives it to move by nut, and the needle bearing on screw rod coordinates with the guiding groove on bearing support, forces screw rod to make upper and lower straight line motion, and needle bearing sliding stability in guiding groove, screw rod is moved stable.The utility model structure is simple and compact, solves the difficult problem that prior art exists, brings beyond thought beneficial effect.
Accompanying drawing explanation
Working principle of the present utility model and details thereof is further described below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the sectional view of the utility model Fig. 1 along A-A line.
Embodiment
With reference to accompanying drawing, turning round the straight journey mechanism of electric actuator this kind more, the nut 1 including support 7, bearing support 3, screw rod 2 and match with screw rod, described bearing support 3 is arranged on support 7, the utility model can add flange bracket 14 in the below of support 7 according to the length of valve rod, then adds long bolt 2, otherwise then adopt shorter screw rod when valve rod is shorter, so go for the valve of more polytypic, and easy to process and processing cost is low, described nut 1 is connected with the main shaft turning round electric actuator more, described screw rod 2 is vertically arranged in bearing support 3, the internal surface of described bearing support 3 is provided with the guiding groove 4 vertically arranged, the screw rod 2 of described guiding groove 4 correspondence is provided with the needle bearing 5 matched with it, described needle bearing 5 is placed in this guiding groove 4, and move along guiding groove 4, so, when the main shaft of many revolutions electric actuator drives nut 1 to rotate, needle bearing 5 limits screw rod 2 radial rotating in guiding groove 4, can only make upper and lower straight line motion, the lower end of described screw rod 2 is connected with the valve rod of valve through support 7, described support 7 is provided with the displacement display module of display screw displacement amount, the internal surface of described support 7 has spacing plane 13, described screw rod 2 is provided with the stop nut 11 for controlling screw displacement matched with the spacing plane 13 of support, the pointer 8 that described displacement display module includes scale-board 6 and matches with scale-board, described scale-board 6 is vertically arranged on support 7, described pointer 8 is arranged on connecting sleeve 9, described connecting sleeve 9 is arranged on screw rod 2, described connecting sleeve 9 is threaded with screw rod 2, internal thread and the screw rod 2 of described stop nut 11 match, when operating mode, described stop nut 11 is locked by the first lock screw 12 with screw rod 2, described connecting sleeve 9 is locked by the second lock screw 10 with screw rod 2, namely connecting sleeve 9 and stop nut 11 all can move relative to screw rod 2, namely the position of pointer 8 and stop nut 11 can be adjusted, after adjustment completes, stop nut 11 and connecting sleeve 9 are locked with screw rod 2 respectively by the first lock screw 12 and the second lock screw 10, stop nut 11, connecting sleeve 9 moving linearly synchronous with screw rod 2.
Working principle of the present utility model is: the main shaft of many revolution electric actuator drives nut 1 to rotate, the screw rod 2 be connected with nut thread also moves thereupon, because the needle bearing 8 on screw rod 2 is in guiding groove 4, thus restriction screw rod 2 radial rotating, upper and lower straight line motion can only be made.When closing valve, screw rod 2 moves down together with connecting sleeve 9 and stop nut 11, and simultaneously screw rod 2 promotes valve rod and makes it carry out passs valve events, and the pointer 8 on connecting sleeve points to scale-board 6, and show the displacement amount of screw rod 2, staff can be simple and clear; Screw rod 2 is displaced downwardly to stop nut 11 when contacting with the spacing plane 13 of support, now valve is closed completely, simultaneously because the stop screw rod 2 of spacing plane 13 can not continue to move down, valve rod would not continue pressurized, be in normal state, so just protect valve rod from damage, and because screw rod 2 can not continue to move down, moment is strengthened, the overload protection arrangement of many revolutions electric actuator will make it out of service, so just completes the closedown of valve; When valve opening, the main shaft of many revolution electric actuator just drives nut 1 counterrotating, and screw rod 2 pulls valve rod to move up, and valve is slowly opened, and after the same number of turns of nut 1 counterrotating, many revolution electric actuator stop, and valve is opened completely.Staff can check the movement of screw rod 2 intuitively by displacement display module of the present utility model; also the state of valve is just learnt; avoid operate miss; mechanical type of the present utility model is spacing, can protect valve rod; avoid excessively drawing high valve rod or compressing valve rod, improve the working life of Safety performance and valve.
Claims (5)
1. one kind, turn round the straight journey mechanism of electric actuator more, include support (7), bearing support (3), screw rod (2) and the nut (1) matched with screw rod, described bearing support (3) is arranged on support (7), described nut (1) is connected with the main shaft turning round electric actuator more, described screw rod (2) is vertically arranged in bearing support (3), and make upper and lower straight line motion, the lower end of described screw rod (2) is connected with the valve rod of valve through support (7), it is characterized in that described support (7) is provided with the displacement display module of display screw rod (2) displacement amount, the internal surface of described support (7) has spacing plane (13), described screw rod (2) is provided with the stop nut (11) for controlling screw displacement matched with the spacing plane (13) of support, internal thread and the screw rod (2) of described stop nut (11) match.
2. the straight journey mechanism of many revolution electric actuator according to claim 1, it is characterized in that the pointer (8) that described displacement display module includes scale-board (6) and matches with scale-board, described scale-board is vertically arranged on support (7), described pointer is arranged on connecting sleeve (9), and described connecting sleeve (9) is arranged on screw rod (2).
3. the straight journey mechanism of many revolution electric actuator according to claim 1, it is characterized in that the internal surface of described bearing support (3) is provided with the guiding groove (4) vertically arranged, the screw rod (2) that described guiding groove is corresponding is provided with the needle bearing (5) matched with it, described needle bearing (5) is placed in this guiding groove (4), and mobile along guiding groove (4).
4. the straight journey mechanism of many revolution electric actuator according to claim 1, it is characterized in that described connecting sleeve (9) is threaded with screw rod (2), when operating mode, described stop nut (11) and screw rod (2) are locked by the first lock screw (12), and described connecting sleeve (9) is locked by the second lock screw (10) with screw rod.
5. the straight journey mechanism of the many revolutions electric actuator according to any one of claim 1-4, is characterized in that the below of described support (7) is equipped with flange bracket (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520105698.3U CN204437454U (en) | 2015-02-13 | 2015-02-13 | A kind of straight journey mechanism of many revolution electric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520105698.3U CN204437454U (en) | 2015-02-13 | 2015-02-13 | A kind of straight journey mechanism of many revolution electric actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204437454U true CN204437454U (en) | 2015-07-01 |
Family
ID=53605322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520105698.3U Withdrawn - After Issue CN204437454U (en) | 2015-02-13 | 2015-02-13 | A kind of straight journey mechanism of many revolution electric actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204437454U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653856A (en) * | 2015-02-13 | 2015-05-27 | 浙江澳翔自控科技有限公司 | Straight stroke mechanism of multi-turn electric actuator |
| CN105952948A (en) * | 2016-06-30 | 2016-09-21 | 天津市津达执行器有限公司 | Electric actuator with multiple connecting sleeve structure |
-
2015
- 2015-02-13 CN CN201520105698.3U patent/CN204437454U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653856A (en) * | 2015-02-13 | 2015-05-27 | 浙江澳翔自控科技有限公司 | Straight stroke mechanism of multi-turn electric actuator |
| CN104653856B (en) * | 2015-02-13 | 2017-05-17 | 浙江澳翔自控科技有限公司 | Straight stroke mechanism of multi-turn electric actuator |
| CN105952948A (en) * | 2016-06-30 | 2016-09-21 | 天津市津达执行器有限公司 | Electric actuator with multiple connecting sleeve structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150701 Effective date of abandoning: 20170517 |
|
| AV01 | Patent right actively abandoned |