CN203979596U - A kind of electric hydaulic valve final controlling element - Google Patents
A kind of electric hydaulic valve final controlling element Download PDFInfo
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- CN203979596U CN203979596U CN201420394828.5U CN201420394828U CN203979596U CN 203979596 U CN203979596 U CN 203979596U CN 201420394828 U CN201420394828 U CN 201420394828U CN 203979596 U CN203979596 U CN 203979596U
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Abstract
The utility model discloses a kind of electric hydaulic valve final controlling element, aim to provide a kind of simple in structure, can be applicable to the electric hydaulic valve final controlling element of middle-size and small-size workplace, its technological scheme main points are, described actuating device comprises the pressure cylinder that actuatable valve bar moves up and down and the Returnning spring resetting for described pressure cylinder, in described pressure cylinder, be provided with piston, this piston is cut apart pressure cylinder to have completely airtight shoe cream room and complete airtight pressure chamber, described piston offers inlet passage and the outlet passage that can be communicated with shoe cream room and pressure chamber, one side of described piston is provided with pump, described pump is corresponding with inlet passage to communicate, the opposite side of the relative pump of described piston is provided with bypass valve, described bypass valve is corresponding with outlet passage to communicate, described pressure cylinder is provided with controller, described controller is electrically connected with pump and bypass valve respectively by wire.
Description
Technical field
The utility model relates to electric actuator technical field, in particular: it relates to a kind of electric hydaulic valve final controlling element.
Background technique
Electric actuator mainly applies to valve field, this final controlling element is a kind of drive unit that straight line can be provided or rotatablely move, it utilizes certain driving source and works under certain control signal effect, final controlling element uses liquid, gas, electric power or other energy and converts it into driving effect by motor, cylinder or other device, drive the stem movement on valve, realize and closing and Open valve.
Hydraulic actuator is in the market a kind of final controlling element performing an action taking hydraulic oil as power completes.Hydraulic executer is relatively electronic, pneumatic actuator has stable drive, reliable and degree of regulation advantages of higher, but, the practical application rate of hydraulic executer is (electronic at three kinds of final controlling element, pneumatic, surge) in minimum, the hydraulic system support of the need of work outside of hydraulic executer, operation hydraulic actuator will be equipped with hydraulic station and pipeline road, this causes the relative electric actuator of hydraulic actuator and pneumatic actuator, one-time investment is larger, installing engineering amount is also more, only have some large-scale workplaces, as the power plant large-scale, the enterprises such as petrochemical plant just can use hydraulic executer, therefore, need to improve.
Model utility content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of simple in structure, electric hydaulic valve final controlling element that can be applicable to middle-size and small-size workplace.
For achieving the above object, the utility model provides following technological scheme: a kind of electric hydaulic valve final controlling element, comprise housing, actuating device, described actuating device is placed in described housing, described actuating device comprises the pressure cylinder that actuatable valve bar moves up and down and the Returnning spring resetting for described pressure cylinder, in described pressure cylinder, be provided with piston, this piston is cut apart pressure cylinder to have completely airtight shoe cream room and complete airtight pressure chamber, described piston offers inlet passage and the outlet passage that can be communicated with shoe cream room and pressure chamber, one side of described piston is provided with pump, described pump is corresponding with inlet passage to communicate, the opposite side of the relative pump of described piston is provided with bypass valve, described bypass valve is corresponding with outlet passage to communicate, described pressure cylinder is provided with controller, described controller is electrically connected with pump and bypass valve respectively by wire.
By adopting technique scheme, this electric actuator is by the pump on controller opens inlet passage, realize the connection of shoe cream room and pressure chamber, flowing medium in shoe cream room flows in pressure chamber by pump so, therefore can make pressure cylinder produce stroke and then control valve rod, move down by valve rod control flap the connection that realizes valve again, in the time that motorized adjustment controller is closed the bypass valve on pump control outlet passage, realize equally the connection of shoe cream room and pressure chamber, flowing medium is flow back into shoe cream room and then controls valve rod from pressure chamber by the effect of Returnning spring and drives flap to move and realize closing of valve, like this simple in structure, compact oil circuit is realized loop in final controlling element inside, without being equipped with hydraulic station and pipeline road, therefore it can be applicable to middle-size and small-size workplace and is particularly useful for this final controlling element of the technical fields such as valve, simultaneously due to this final controlling element by hydraulic control therefore its also to have stable drive reliable, degree of regulation advantages of higher, this final controlling element also has reset feature.
The utility model is further set to: the outer side wall of described pressure cylinder is provided with the upper fixing part to outer process, the madial wall of the described housing position corresponding with fixing part is provided with lower fixing part, described lower fixing part is provided with projection, one end of described Returnning spring is set on projection and is inconsistent with lower fixing part, and the other end of Returnning spring and upper fixing part are inconsistent.
By adopting technique scheme, the two ends of described Returnning spring are inconsistent with upper fixing part and lower fixing part respectively, are convenient to the installation of Returnning spring, and Returnning spring is fixed on lower fixing part by projection, can avoid Returnning spring to be offset.
The utility model is further set to: between described piston and described pressure cylinder, be provided with seal ring, the inner ring of described seal ring is connected in described piston, and described cylinder wall is close in the outer ring of described seal ring.
By adopting technique scheme, between piston and pressure cylinder, be provided with seal ring, guarantee the isolated of shoe cream room and pressure chamber, avoid because of initial even at the bottom of the precision that admittance causes, the inefficacy of transmission difficulty and then the final controlling element that causes, the inner ring of seal ring is connected in described piston, ensures the stable of seal ring, has better sealability.
The utility model is further set to: a side of the relative valve of described housing is provided with the transparent indicator board of valve position, and described valve position indicator board is provided with several scale positions.
By adopting technique scheme, the transparent indicator board of valve position reflects the opening degree of valve intuitively, and needs that can be concrete as the case may be regulate the unlatching of pump, and then the open degree of control valve, on described valve position indicator board, be provided with several scale positions, can more precisely control.
The utility model is further set to: the quantity of described Returnning spring is two, lays respectively at the both sides of pressure cylinder.
By adopting technique scheme, pressure cylinder is resetted reliable and stable.
Brief description of the drawings
Fig. 1 is the sectional view of a kind of electric hydaulic valve of the utility model final controlling element;
Fig. 2 is A partial enlarged drawing in Fig. 1.
In figure 1, housing; 11, lower fixing part; 111, projection; 2, actuating device; 21, pressure cylinder; 211, upper fixing part; 212, shoe cream room; 213, pressure chamber; 22, Returnning spring; 23, piston; 231, inlet passage; 232, outlet passage; 24, pump; 25, bypass valve; 26, seal ring; 3, controller; 4, the transparent indicator board of valve position; 5, valve rod; 6, flap.
Embodiment
Referring to figs. 1 through Fig. 2, a kind of electric hydaulic valve of the utility model final controlling element is described further.
A kind of electric hydaulic valve final controlling element, comprise housing 1, actuating device 2, described actuating device 2 is placed in described housing 1, described actuating device 2 comprises the pressure cylinder 21 that actuatable valve bar moves up and down and the Returnning spring 22 resetting for described pressure cylinder 21, the outer side wall of described pressure cylinder 21 is provided with the upper fixing part 211 to outer process, the madial wall of described housing 1 position corresponding with fixing part is provided with lower fixing part 11, described lower fixing part 11 is provided with projection 111, one end of described Returnning spring 22 is set on projection 111 and is inconsistent with lower fixing part 11, the other end of Returnning spring 22 and upper fixing part 211 are inconsistent, the two ends of described Returnning spring 22 are inconsistent with upper fixing part 211 and lower fixing part 11 respectively, be convenient to the installation of Returnning spring 22, Returnning spring 22 is fixed on lower fixing part 11 by projection 111, can avoid Returnning spring 22 to be offset, the quantity of wherein said Returnning spring 22 is two, lay respectively at the both sides of pressure cylinder 21, pressure cylinder 21 is resetted reliable and stable.
In described pressure cylinder 21, be provided with piston 23, this piston 23 is cut apart pressure cylinder 21 to have completely airtight shoe cream room 212 and complete airtight pressure chamber 213, described piston 23 offers inlet passage 231 and the outlet passage 232 that can be communicated with shoe cream room 212 and pressure chamber 213, one side of described piston 23 is provided with pump 24, described pump 24 is corresponding with inlet passage 231 to communicate, the opposite side of described piston 23 relative pumps 24 is provided with bypass valve 25, described bypass valve 25 is corresponding with outlet passage 232 to communicate, described pressure cylinder 21 is provided with controller 3, controller 3 can be fixed on the outer side wall of housing 1 by steel plate or support, described controller 3 is electrically connected with pump 24 and bypass valve 25 respectively by wire.
Wherein pump 24 and bypass valve 25 are prior art, and both working principles and structure are introduced personnel by related domain and known, and here just seldom introduce; With the interior set control circuit part of Time Controller 3, controller 3 is also prior art with the electric connection mode of pump 24 and bypass valve 25 respectively by wire, its middle controller 3 can be SKB82.51 model, power supply voltage is AC 24V, or can be also SKC82.61 model, power supply voltage be AC 24V;
Between described piston 23 and described pressure cylinder 21, be provided with seal ring 26, the inner ring of described seal ring 26 is connected in described piston 23, the outer wall of described pressure cylinder 21 is close in the outer ring of described seal ring 26, between piston 23 and pressure cylinder 21, be provided with seal ring 26, guarantee the isolated of shoe cream room 212 and pressure chamber 213, avoid because of initial even at the bottom of the precision that admittance causes, the inefficacy of transmission difficulty and then the final controlling element that causes, the inner ring of seal ring 26 is connected in described piston 23, ensure the stable of seal ring 26, have better sealability.
One side of described housing 1 relative valve is provided with the transparent indicator board 4 of valve position, the transparent indicator board 4 of this valve position can be made by transparent plastic, for example PA, PC, described valve position indicator board is provided with several scale positions, the transparent indicator board 4 of valve position reflects the opening degree of valve intuitively, and needs that can be concrete as the case may be regulate the unlatching of pump 24, and then the open degree of control valve, on described valve position indicator board, be provided with several scale positions, can more precisely control.
Working principle: this electric actuator is opened the pump 24 on inlet passage 231 by controller 3, realize the connection of shoe cream room 212 and pressure chamber 213, flowing medium in shoe cream room 212 flows in pressure chamber 213 by pump 24 so, therefore can make pressure cylinder 21 produce stroke and then control valve rod 5, control flap 6 by valve rod 5 again and move down the connection that realizes valve, when motorized adjustment controller 3 is closed pump 24 while controlling the bypass valve 25 on outlet passage 232, realize equally the connection of shoe cream room 212 and pressure chamber 213, flowing medium is flow back into shoe cream room 212 and then controls valve rod 5 from pressure chamber 213 by the effect of Returnning spring 22 and drives flap 6 to move and realize closing of valve, like this simple in structure, compact oil circuit is realized loop in final controlling element inside, without being equipped with hydraulic station and pipeline road, therefore it can be applicable to middle-size and small-size workplace and is particularly useful for this final controlling element of the technical fields such as valve, simultaneously due to this final controlling element by hydraulic control therefore its also to have stable drive reliable, degree of regulation advantages of higher, this final controlling element also has reset feature.
Claims (5)
1. an electric hydaulic valve final controlling element, comprise housing, actuating device, described actuating device is placed in described housing, it is characterized in that: described actuating device comprises the pressure cylinder that actuatable valve bar moves up and down and the Returnning spring resetting for described pressure cylinder, in described pressure cylinder, be provided with piston, this piston is cut apart pressure cylinder to have completely airtight shoe cream room and complete airtight pressure chamber, described piston offers inlet passage and the outlet passage that can be communicated with shoe cream room and pressure chamber, one side of described piston is provided with pump, described pump is corresponding with inlet passage to communicate, the opposite side of the relative pump of described piston is provided with bypass valve, described bypass valve is corresponding with outlet passage to communicate, described pressure cylinder is provided with controller, described controller is electrically connected with pump and bypass valve respectively by wire.
2. a kind of electric hydaulic valve final controlling element according to claim 1, it is characterized in that: the outer side wall of described pressure cylinder is provided with the upper fixing part to outer process, the madial wall of the described housing position corresponding with fixing part is provided with lower fixing part, described lower fixing part is provided with projection, one end of described Returnning spring is set on projection and is inconsistent with lower fixing part, and the other end of Returnning spring and upper fixing part are inconsistent.
3. a kind of electric hydaulic valve final controlling element according to claim 1 and 2, it is characterized in that: between described piston and described pressure cylinder, be provided with seal ring, the inner ring of described seal ring is connected in described piston, and described cylinder wall is close in the outer ring of described seal ring.
4. a kind of electric hydaulic valve final controlling element according to claim 3, is characterized in that: a side of the relative valve of described housing is provided with the transparent indicator board of valve position, and described valve position indicator board is provided with several scale positions.
5. a kind of electric hydaulic valve final controlling element according to claim 1 and 2, is characterized in that: the quantity of described Returnning spring is two, lays respectively at the both sides of pressure cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394828.5U CN203979596U (en) | 2014-07-17 | 2014-07-17 | A kind of electric hydaulic valve final controlling element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394828.5U CN203979596U (en) | 2014-07-17 | 2014-07-17 | A kind of electric hydaulic valve final controlling element |
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| CN203979596U true CN203979596U (en) | 2014-12-03 |
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| CN201420394828.5U Active CN203979596U (en) | 2014-07-17 | 2014-07-17 | A kind of electric hydaulic valve final controlling element |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191660A (en) * | 2017-07-24 | 2017-09-22 | 刘建宏 | 60 millimeters of Direct Travel power-off restoration intelligent frequency-conversion hydraulic electric actuators |
| CN111425651A (en) * | 2020-03-03 | 2020-07-17 | 中国石化销售股份有限公司华南分公司 | Energy accumulator reset servo direct-drive type angular travel rapid cut-off actuating mechanism |
-
2014
- 2014-07-17 CN CN201420394828.5U patent/CN203979596U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191660A (en) * | 2017-07-24 | 2017-09-22 | 刘建宏 | 60 millimeters of Direct Travel power-off restoration intelligent frequency-conversion hydraulic electric actuators |
| CN107191660B (en) * | 2017-07-24 | 2024-03-19 | 刘建宏 | 60mm straight Cheng Duandian reset intelligent variable-frequency hydraulic electric actuator |
| CN111425651A (en) * | 2020-03-03 | 2020-07-17 | 中国石化销售股份有限公司华南分公司 | Energy accumulator reset servo direct-drive type angular travel rapid cut-off actuating mechanism |
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