CN203322442U - Shutoff valve driven by electric push rod - Google Patents
Shutoff valve driven by electric push rod Download PDFInfo
- Publication number
- CN203322442U CN203322442U CN2013203789477U CN201320378947U CN203322442U CN 203322442 U CN203322442 U CN 203322442U CN 2013203789477 U CN2013203789477 U CN 2013203789477U CN 201320378947 U CN201320378947 U CN 201320378947U CN 203322442 U CN203322442 U CN 203322442U
- Authority
- CN
- China
- Prior art keywords
- valve
- rod
- electric pushrod
- valve body
- shutoff valve
- 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.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 239000012528 membrane Substances 0.000 claims description 15
- 239000011324 bead Substances 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 7
- 230000003068 static effect Effects 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Images
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- Electrically Driven Valve-Operating Means (AREA)
- Lift Valve (AREA)
Abstract
The utility model relates to a shutoff valve driven by an electric push rod. The shutoff valve is mainly used for solving the problems of the existing shutoff valves driven by the electric push rods that the required motor power is high and the sealing effect is poor. The shutoff valve is characterized in that a guiding sleeve (7) is connected between a valve body (1) and the electric push rod (4), a plurality of arc-shaped sliding grooves (8) are uniformly formed in the internal wall of the guiding sleeve (7) along the circumferential direction, at least two steel ball grooves (9) which are distributed uniformly are formed in the external wall of a telescopic rod (6), steel balls (10) are accommodated after the steel ball grooves (9) and the sliding grooves (8) are correspondingly matched, and ball racks (11) for placing the steel balls (10) are fixed on the telescopic rod (6); a sealing diaphragm (12) is clamped between the guiding sleeve (7) and the valve body (1). The shutoff valve has the advantages that the resistance to a valve rod is reduced greatly due to the adoption of a rolling friction pair guide and static seal structure, the required motor power is low, and the sealing effect is good.
Description
Technical field
The utility model relates to a kind of valve, is specifically related to the stop valve that a kind of electric pushrod drives.
Background technique
Stop valve is a kind of valve commonly used, mainly valve body, flap and valve rod, consists of, and is provided with valve seat in valve body, and flap drives the center line moving linearly along valve seat by valve rod.Because valve rod unlatching or the shutoff stroke of stop valve are relatively short, and have cutting function very reliably, the variation of valve seat port and the stroke of flap relation in direct ratio, be suitable for the adjusting to flow.Therefore, stop valve is usually used in cut-out, adjusting and the throttling of fluid.It is manual, pneumatic and electronic etc. that the mode of operation of stop valve is divided into, electric pushrod is as straight line executing mechanism, also be applicable to being applied on stop valve, electric pushrod comprises drive motor, reducing gear and flexible rod, is easy to realize distant control, centralized control, and electric pushrod is made back and forth movement in the certain limit stroke, electric pushrod is compared with pneumatic actuator, do not need source of the gas and supplementary equipment, take up room little, save energy consumption.Still there is following technological deficiency in use in the stop valve that existing electric pushrod drives: because the valve rod in stop valve is to adopt the stuffing box packing sealing, frictional force between valve rod and stuffing box packing is larger, the suffered resistance of valve rod is larger, with regard to required power, larger electric pushrod could the actuate valve stem straight line motion like this, after wearing and tearing appear in valve rod and stuffing box packing, can produce and leak, sealing effect is poor.
The model utility content
The power of motor needed for the stop valve that overcomes existing electric pushrod driving reaches greatly the poor deficiency of sealing effect, the stop valve that the utility model provides a kind of electric pushrod to drive, the stop valve that this electric pushrod drives adopts rolling friction pair guiding and static seal structure, significantly reduced the suffered resistance of valve rod, the power of required motor is little, good sealing effect.
The technical solution of the utility model is: the stop valve that a kind of electric pushrod drives comprises valve body, valve rod, spool and electric pushrod, valve body is provided with valve seat, spool is connected with valve rod, electric pushrod comprises flexible rod, be connected with guide sleeve between valve body and electric pushrod, the inwall of guide sleeve is along circumferentially evenly having a plurality of arc chutes, the outer wall of flexible rod is at least with 2 equally distributed steel bead grooves, described steel bead groove rear coincide corresponding with described chute held steel ball, described steel bead groove is all parallel with the center line of guide sleeve and flexible rod with described chute, be fixed with the pearl frame of laying steel ball on flexible rod, between guide sleeve and valve body, clamping has seal membrane, and valve rod passes the center of seal membrane and is connected with flexible rod, and in the annulus on seal membrane between valve rod and valve body, with fold, seal membrane is compressed by the sealing nut on valve rod.
Between described flexible rod and valve rod, be threaded, valve rod is provided with locking nut.
Described steel bead groove is 2.
The utlity model has following beneficial effect: owing to taking such scheme, steel ball can slide in chute, effectively reduced the frictional force between flexible rod and guide sleeve, the resistance be subject to during electric pushrod band ovable valve stem straight line motion is very little, and the power of motor that electric pushrod adopts reduces; Make the motive sealing in background technique into static seal by seal membrane, good sealing effect.
The accompanying drawing explanation
Accompanying drawing 1 is structure sectional view of the present utility model.
Accompanying drawing 2 is A-A structure sectional views in Fig. 1.
1-valve body in figure, 2-valve rod, 3-spool, 4-electric pushrod, 5-valve seat, 6-flexible rod, 7-guide sleeve, 8-chute, 9-steel bead groove, 10-steel ball, 11-pearl frame, 12-seal membrane, 13-fold, 14-sealing nut, 15-locking nut.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
By Fig. 1 in conjunction with shown in Fig. 2, the stop valve that a kind of electric pushrod drives comprises valve body 1, valve rod 2, spool 3 and electric pushrod 4, valve body 1 is provided with valve seat 5, spool 3 is connected with valve rod 2, electric pushrod 4 comprises flexible rod 6, be connected with guide sleeve 7 between valve body 1 and electric pushrod 4, the inwall of guide sleeve 7 is along circumferentially evenly having a plurality of arc chutes 8, the outer wall of flexible rod 6 is at least with 2 equally distributed steel bead grooves 9, described steel bead groove 9 rear coincide corresponding with described chute 8 held steel ball 10, described steel bead groove 9 is all parallel with the center line of guide sleeve 7 and flexible rod 6 with described chute 8, be fixed with the pearl frame 11 of laying steel ball 10 on flexible rod 6, pearl frame 11 has certain free travel, between guide sleeve 7 and valve body 1, clamping has seal membrane 12, valve rod 2 passes seal membrane 12De center and is connected with flexible rod 6, in annulus on seal membrane 12 between valve rod 2 and valve body 1 with fold 13, fold 13 can pull open and turn up in company with valve rod 2 in stroke, and seal membrane 12 is compressed by the sealing nut 14 on valve rod 2.Owing to taking technique scheme, steel ball 10 can effectively reduce the frictional force between flexible rod 6 and guide sleeve 7 in the interior slip of chute 8, and the resistance that electric pushrod 4 is subject to during with ovable valve stem 2 straight line motion is very little, and the power of motor that electric pushrod 4 adopts reduces; Make the motive sealing in background technique into static seal by seal membrane 12, good sealing effect.
Between described flexible rod 6 and valve rod 2, be threaded, valve rod 2 is provided with locking nut 15, and locking nut 15 prevents between valve rod 2 and flexible rod 6 loosening.
Described steel bead groove 9 is 2.The quantity of steel bead groove 9 is according to the size design of diameter and the steel ball 10 of valve rod 2.
Claims (3)
1. the stop valve that an electric pushrod drives, comprise valve body (1), valve rod (2), spool (3) and electric pushrod (4), valve body (1) is provided with valve seat (5), spool (3) is connected with valve rod (2), electric pushrod (4) comprises flexible rod (6), it is characterized in that: between valve body (1) and electric pushrod (4), be connected with guide sleeve (7), the inwall of guide sleeve (7) is along circumferentially evenly having a plurality of arc chutes (8), the outer wall of flexible rod (6) is at least with 2 equally distributed steel bead grooves (9), described steel bead groove (9) rear coincide corresponding with described chute (8) held steel ball (10), described steel bead groove (9) is all parallel with the center line of guide sleeve (7) and flexible rod (6) with described chute (8), be fixed with the pearl frame (11) of laying steel ball (10) on flexible rod (6), between guide sleeve (7) and valve body (1), clamping has seal membrane (12), valve rod (2) passes the center of seal membrane (12) and is connected with flexible rod (6), be positioned at annulus between valve rod (2) and valve body (1) on seal membrane (12) with fold (13), seal membrane (12) is compressed by the sealing nut (14) on valve rod (2).
2. the stop valve that a kind of electric pushrod according to claim 1 drives is characterized in that: between described flexible rod (6) and valve rod (2), be threaded, valve rod (2) is provided with locking nut (15).
3. the stop valve that a kind of electric pushrod according to claim 1 and 2 drives, it is characterized in that: steel bead groove (9) is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203789477U CN203322442U (en) | 2013-06-27 | 2013-06-27 | Shutoff valve driven by electric push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203789477U CN203322442U (en) | 2013-06-27 | 2013-06-27 | Shutoff valve driven by electric push rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203322442U true CN203322442U (en) | 2013-12-04 |
Family
ID=49661794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203789477U Expired - Fee Related CN203322442U (en) | 2013-06-27 | 2013-06-27 | Shutoff valve driven by electric push rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203322442U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629418A (en) * | 2013-12-09 | 2014-03-12 | 镇江市博林光电科技有限公司 | Solenoid valve core capable of moving back and forth at high speed |
| CN104806792A (en) * | 2015-05-10 | 2015-07-29 | 湖南宜化化工有限责任公司 | Liquid feeding and draining one-way valve of urea liquid ammonia pump |
| CN107725787A (en) * | 2017-11-10 | 2018-02-23 | 东台市建东机械制造有限公司 | A kind of multifunctional water pump control valve |
-
2013
- 2013-06-27 CN CN2013203789477U patent/CN203322442U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629418A (en) * | 2013-12-09 | 2014-03-12 | 镇江市博林光电科技有限公司 | Solenoid valve core capable of moving back and forth at high speed |
| CN104806792A (en) * | 2015-05-10 | 2015-07-29 | 湖南宜化化工有限责任公司 | Liquid feeding and draining one-way valve of urea liquid ammonia pump |
| CN107725787A (en) * | 2017-11-10 | 2018-02-23 | 东台市建东机械制造有限公司 | A kind of multifunctional water pump control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20150627 |
|
| EXPY | Termination of patent right or utility model |