CN202812420U - Plunger type high pressure actuator - Google Patents
Plunger type high pressure actuator Download PDFInfo
- Publication number
- CN202812420U CN202812420U CN 201220483588 CN201220483588U CN202812420U CN 202812420 U CN202812420 U CN 202812420U CN 201220483588 CN201220483588 CN 201220483588 CN 201220483588 U CN201220483588 U CN 201220483588U CN 202812420 U CN202812420 U CN 202812420U
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- Prior art keywords
- plunger
- type high
- hole
- controlling element
- final controlling
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Abstract
The utility model provides a plunger type high pressure actuator which comprises a cylinder body, cylinder covers, a plunger rack and a gear shaft. The number of the cylinder covers is two, and the two cylinder covers are respectively arranged at two ends of the cylinder body and fixedly connected with the cylinder body. An eccentric horizontal through hole and an eccentric vertical through hole are formed in the cylinder body, the plunger rack is arranged in the horizontal through hole and can move in a linear mode in the horizontal through hole, and the gear shaft is arranged in the vertical through hole and can move in a rotating mode in the vertical through hole. Multiple racks are arranged in the middle of the plunger rack, and the racks are meshed with the gear shaft. According to the plunger type high pressure actuator, the racks are arranged in the middle of the plunger rack, a contact middle point of each rack and a gear on the gear shaft is close to a central line of a plunger, and therefore the plunger type high pressure actuator can bear high pressure.
Description
Technical field
The utility model belongs to the valve actuator field, is specifically related to a kind of plunger type high-pressure final controlling element.
Background technique
The Main Function of valve actuator in robot control system(RCS) is the control signal that receives controller output, makes the aperture of modulating valve produce respective change, thereby reaches the purpose of Adjustment operation variable flow.Pneumatic actuator is simple in structure owing to it, the advantages such as reliable in action stable, installation and maintenance convenience, low price, is widely used at present.But pneumatic actuator generally all can only bear the pressure of 0.4-0.8Mpa, can not bear high pressure.
The model utility content
The utility model provides a kind of energy high voltage bearing plunger type high-pressure final controlling element for above-mentioned the deficiencies in the prior art.
The utility model is achieved by the following technical solution:
A kind of plunger type high-pressure final controlling element is characterized in that, comprises gray iron, plunger tooth bar and gear shaft; Cylinder cap is two, is separately positioned on the two ends of cylinder body, is fixedly connected with cylinder body; Be provided with eccentric horizontal through hole and vertical through hole in the described cylinder body, the plunger tooth bar is arranged in the horizontal through hole, and can be in described horizontal through hole moving linearly, gear shaft is arranged in the vertical through hole, and can rotate in described vertical through hole; The middle part of described plunger tooth bar is provided with some tooth bars, described rack and pinion axle engagement.
Further setting of the present utility model is that the two ends of plunger tooth bar respectively are provided with a star seal ring.The setting of star seal ring can guarantee sealing and the low-frictional force of plunger tooth bar, and the star seal ring is owing to there are a plurality of point of contact, so sealing is reliable, and frictional force is little, the needs of applicable quick open and close.
Further setting of the present utility model is, has the circular groove of the some lubricated intrinsic energy impurity of holding concurrently on the cylindrical of plunger tooth bar.The setting of circular groove also can be stored the things such as impurity that produce in the plunger motion process except playing lubricated effect, make the motion of plunger type tooth bar more flexible, longer service life.
Further setting of the present utility model is that side of cylinder block also is provided with a cover plate.Cover plate can play the effect that parts such as preventing gear shaft and seal ring drops out.
Further setting of the present utility model is that described cylinder cap is provided with the tapered thread connection mouth of a turnover oil or gas.
Further setting of the present utility model is that the centre of cylinder cap is provided with adjustable positioning rod.Adjustable positioning rod arrange can the regulating valve switch angle.
Further setting of the present utility model is that cylinder cap has the convex surface that stretches in the cylinder body, and the outer ring of described convex surface is provided with O shape circle.
Further setting of the present utility model is that the neutral position of described gear shaft is provided with the gear that is meshed with the plunger tooth bar, and an end of gear shaft is provided with for what can be connected with valve rod and intersects the square hole groove, and the other end is provided with a valve phase indicator.
Further setting of the present utility model is, on the outer ring of described gear shaft seal ring is housed, and the 2nd O type circle is equipped with in the outer ring of seal ring, and the internal diameter direction of seal ring is equipped with the 3rd O type circle and copper sheathing.
Plunger type high-pressure final controlling element described in the utility model has some tooth bars by the middle part at the plunger tooth bar, so that the contact mid point that the rack and pinion axle cogs is closer from the plunger center line, so it can bear very high pressure.And the gear of pneumatic actuator is the middle part at cylinder body, want to increase moment of torsion and just must increase gear diameter, and after the gear diameter increase, the contact center of rack and pinion will be away from the center of piston, tooth bar on the piston will bear very large deflecting torque like this, so the piston type tooth bar just can not bear higher pressure.And the plunger type tooth bar is because the deflecting force distance is little, so can bear the pressure more much higher than piston type tooth bar.
It is large that plunger type high-pressure final controlling element described in the utility model is mainly used in torque demand, product takes up room little, switch requires faster occasion of ratio, and it has overcome pneumatic actuator, the shortcoming that cost performance is not high, so-called cost performance refers to such an extent that be in the same torque situation, the size of used product cost, the plunger type high-pressure final controlling element can only bear 0.4-0.8Mpa owing to can bear high pressure (10MPa) than pneumatic actuator, air pressure, exceed a lot of doubly.So its volume can dwindle several times, so cost is also just lower, because smaller volume, cylinder body has also just diminished so, and the corresponding volume that advances cylinder body is also just smaller, therefore the speed of valve switch has also just been accelerated.
Description of drawings
Fig. 1 is the plan view of plunger type high-pressure final controlling element described in the utility model;
Fig. 2 is the left view of plunger type high-pressure final controlling element described in the utility model;
Fig. 3 is the enlarged view of plunger tooth bar;
Fig. 4 is the structural drawing of star seal ring;
Among the figure: 1. socket head screw 2. cylinder caps 3. an O type circle 4. star seal rings 5. plunger tooth bars 6. cylinder bodies 7. crossed countersunk head screws 8. cover plates 9. the 2nd O type circle 10. the 3rd O type circle 11. seal rings 12. copper sheathings 13. gear shafts 14. adjustable positioning rod 15. thin nuts 21. first oil gas mouths 22. second oil gas mouths 51. tooth bars 61 throw of eccentric.
Embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Shown in Fig. 1-4, the utility model provides a kind of plunger type high-pressure final controlling element, comprises cylinder body 6, cylinder cap 2, plunger tooth bar 5 and gear shaft 13; Cylinder cap 2 is two, is separately positioned on the two ends of cylinder body 6, is fixedly connected with cylinder body 6; Be provided with eccentric horizontal through hole and vertical through hole in the described cylinder body 6, plunger tooth bar 5 is arranged in the horizontal through hole, and can be in described horizontal through hole moving linearly, gear shaft 13 is arranged in the vertical through hole, and can rotate in described vertical through hole.The size of two hole throw of eccentric 61 affects the size of moment of torsion, and off-centre is larger, illustrates that pitch diameter is larger, and moment of torsion will become greatly so, and vice versa.The middle part of described plunger tooth bar 5 is provided with some tooth bars 51, described tooth bar 51 and gear shaft 13 engagements, transmitting torque.The two ends of plunger tooth bar 5 respectively are provided with a star seal ring 4.Have the circular groove of the some lubricated intrinsic energy impurity of holding concurrently on the cylindrical of plunger tooth bar 5.The neutral position of described gear shaft 13 is provided with the gear that is meshed with plunger tooth bar 5, and an end of gear shaft 13 is provided with for what can be connected with valve rod and intersects the square hole groove, and the other end is provided with a valve phase indicator.
There is one not only to advance but also oil, gas port that the tapered thread of fuel-displaced or gas connects on the described cylinder cap 2; During valve closing, oily left cylinder cap is oily, gas port is fuel-displaced or gas from right cylinder cap oil, gas port oil-feed, and during valve open, oil is from left cylinder cap oil, gas port oil-feed, and right cylinder cap is oily, gas port is fuel-displaced or gas.
With several socket head screws 1 it is fastened on the cylinder body 6 on the cylinder cap 2, for attractive in appearance, the not outstanding plane of covering of screw.The centre of cylinder cap 2 is provided with adjustable positioning rod 14 in addition, and adjustable positioning rod 14 is provided with a thin nut 15, mainly is the accuracy of 90 ° of levelling valve switchs.Cylinder cap 2 has the convex surface that stretches in the cylinder body 6, and the convex surface cylindrical of cylinder cap 2 is provided with O shape circle 3 and is used as static seal, guarantees the gentle outside that is not leaked to of liquid.Gear for being connected with plunger tooth bar 5 in the middle of on the described gear shaft 13, one end of axle has the square hole of intersection groove to be connected with valve rod, the other end of axle can fill valve phase indicator, seal ring 11 is housed on its outer ring, the cylindrical of seal ring 11 is equipped with the 2nd O type circle 9, the internal diameter direction of seal ring 11 has the 3rd O type circle 10 and copper sheathing 12, and this copper sheathing can play to gear shaft 13 effect of anti-attrition.Cover plate 8 plays parts such as preventing gear shaft 13, seal ring 11 and drops out.
The working principle of plunger type high-pressure final controlling element described in the utility model is:
When oil, when bleed pressure advances cylinder body 6 from the first oil gas mouth 21, pressure oil will promote plunger tooth bar 5 left direction move, the gentle second oil gas mouth 22 that passes through of liquid in the left chamber cylinder body 6 is discharged, the tooth bar of while on plunger tooth bar 5, driven gear axle 13 is done 90 ° turning clockwise, and gear shaft 13 also turns clockwise with the valve rod of movable valve, to valve is closed.
Otherwise oil, air pressure are from oil, when gas port 22 enters cylinder body 6, and pressure will promote plunger tooth bar 5 and move to right, liquid in right chamber oil or the cylinder block 6 is gentle discharges by oil, gas port 11, the plunger upper rack with driven gear axle 13, is done 90 ° inhour rotation simultaneously.Also do the inhour rotation with the valve rod of movable valve again, to valve is opened.
Because the distance of each tooth bar is smaller in the plunger tooth bar 5, so it is more much higher than Pneumatic piston tooth bar intensity, so it can bear higher pressure, because obtained three advantage, the one, the final controlling element of same size, the plunger type high-pressure final controlling element is much bigger.The 2nd, the valve switch speed of operation is fast, and this is because the cylinder body area is little, about oil, air cavity need be also just little with the volume of oil or gas.So can be full of oil pocket soon, thus valve open and close just very fast.The 3rd, a kind of final controlling element of specification can dispose the valve of plurality of specifications, and generally all more than 4, this is that generally all more than 3 times, and the needed moment of torsion of valve adjacent-specification differs less than 1 times because the final controlling element moment of torsion of adjacent two specifications differs larger.
The above is preferred embodiment of the present utility model, and all equivalent variations of doing according to the utility model claim all should belong to protection domain of the present utility model.
Claims (9)
1. a plunger type high-pressure final controlling element is characterized in that, comprises cylinder body (6), cylinder cap (2), plunger tooth bar (5) and gear shaft (13); Cylinder cap (2) is two, is separately positioned on the two ends of cylinder body (6), is fixedly connected with cylinder body (6); Be provided with eccentric horizontal through hole and vertical through hole in the described cylinder body (6), plunger tooth bar (5) is arranged in the horizontal through hole, and can be in described horizontal through hole moving linearly, gear shaft (13) is arranged in the vertical through hole, and can rotate in described vertical through hole; The middle part of described plunger tooth bar (5) is provided with some tooth bars, described rack and pinion axle (13) engagement.
2. plunger type high-pressure final controlling element according to claim 1 is characterized in that, the two ends of plunger tooth bar (5) respectively are provided with a star seal ring (4).
3. plunger type high-pressure final controlling element according to claim 1 is characterized in that, has the circular groove of the some lubricated intrinsic energy impurity of holding concurrently on the cylindrical of plunger tooth bar (5).
4. plunger type high-pressure final controlling element according to claim 1 is characterized in that, the side of cylinder body (6) also is provided with a cover plate (8).
5. plunger type high-pressure final controlling element according to claim 1 is characterized in that, described cylinder cap (2) is provided with the tapered thread connection mouth of a turnover oil or gas.
6. plunger type high-pressure final controlling element according to claim 1 is characterized in that, the centre of cylinder cap (2) is provided with adjustable positioning rod (14).
7. plunger type high-pressure final controlling element according to claim 1 is characterized in that, cylinder cap (2) has the convex surface that stretches in the cylinder body (6), and the outer ring of described convex surface is provided with O shape circle (3).
8. plunger type high-pressure final controlling element according to claim 1, it is characterized in that, the neutral position of described gear shaft (13) is provided with the gear that is meshed with plunger tooth bar (5), one end of gear shaft (13) is provided with for what can be connected with valve rod and intersects the square hole groove, and the other end is provided with a valve phase indicator.
9. plunger type high-pressure final controlling element according to claim 1, it is characterized in that, seal ring (11) is housed on the outer ring of described gear shaft (13), the 2nd O type circle (9) is equipped with in the outer ring of seal ring (11), and the internal diameter direction of seal ring (11) is equipped with the 3rd O type circle (10) and copper sheathing (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220483588 CN202812420U (en) | 2012-09-20 | 2012-09-20 | Plunger type high pressure actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220483588 CN202812420U (en) | 2012-09-20 | 2012-09-20 | Plunger type high pressure actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202812420U true CN202812420U (en) | 2013-03-20 |
Family
ID=47871290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220483588 Expired - Fee Related CN202812420U (en) | 2012-09-20 | 2012-09-20 | Plunger type high pressure actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202812420U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853149A (en) * | 2012-09-20 | 2013-01-02 | 浙江中旭达自控阀门有限公司 | Plunger-type high pressure actuator |
| CN103953596A (en) * | 2014-05-14 | 2014-07-30 | 南通永创航海机械有限公司 | Hydraulic driving device |
-
2012
- 2012-09-20 CN CN 201220483588 patent/CN202812420U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853149A (en) * | 2012-09-20 | 2013-01-02 | 浙江中旭达自控阀门有限公司 | Plunger-type high pressure actuator |
| CN102853149B (en) * | 2012-09-20 | 2014-12-24 | 浙江中旭达自控阀门有限公司 | Plunger-type high pressure actuator |
| CN103953596A (en) * | 2014-05-14 | 2014-07-30 | 南通永创航海机械有限公司 | Hydraulic driving device |
| CN103953596B (en) * | 2014-05-14 | 2016-03-23 | 南通永创航海机械有限公司 | A kind of fluid pressure drive device |
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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: 20130320 Termination date: 20140920 |
|
| EXPY | Termination of patent right or utility model |