CN214466486U - Device for driving zero-friction ball valve by electro-hydraulic actuator and zero-friction ball valve driven by device - Google Patents
Device for driving zero-friction ball valve by electro-hydraulic actuator and zero-friction ball valve driven by device Download PDFInfo
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- CN214466486U CN214466486U CN202120169849.7U CN202120169849U CN214466486U CN 214466486 U CN214466486 U CN 214466486U CN 202120169849 U CN202120169849 U CN 202120169849U CN 214466486 U CN214466486 U CN 214466486U
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Abstract
The utility model provides a device of zero friction ball valve of electricity liquid executor drive and driven zero friction ball valve thereof, wherein the device of zero friction ball valve of electricity liquid executor drive, the main points are: the linear actuating mechanism is connected with the motor-driven reversing valve in series and then connected with the rotary actuating mechanism in parallel, and an electromagnetic valve is connected to an oil supply pipeline of the electro-hydraulic actuator; the motor-driven reversing valve is arranged on an upper end cover of the linear oil cylinder, a thimble of the motor-driven reversing valve downwards penetrates through the upper end cover to enter a cylinder cavity of the linear oil cylinder, a screw is arranged on the upper end surface of a piston of the linear oil cylinder, and a screw cap of an adjusting screw faces the thimble; the linear oil cylinder, the rotary oil cylinder and the flange with the neck are sequentially and rigidly connected, an output gear of the rotary oil cylinder is arranged on a piston rod of the linear oil cylinder in a key connection mode, the piston rod is rigidly connected with a connecting rod, three travel switches or proximity switches for controlling the electromagnetic reversing valve are arranged on the wall of a neck cavity, and a convex block capable of triggering the three travel switches or proximity switches is arranged on the piston rod or the connecting rod in the neck cavity.
Description
Technical Field
The utility model relates to a zero friction ball valve, the zero friction ball valve of electro-hydraulic actuator driven specifically says so.
Background
CN210661446U discloses a zero-friction telescopic ball valve, paragraph 0015 of the specification records the working process of the zero-friction telescopic ball valve, specifically, when the handle 36 is parallel to the water flow channel of the valve, the valve is in an open state, and when the valve needs to be closed, the handle 36 is first pushed clockwise to rotate ninety degrees, at this time, the handle 36 drives the positioning pin 24 and the valve rod 33 connected to the same to rotate ninety degrees synchronously, the water flow port of the ball 11 is perpendicular to the water flow channel of the valve body, and the sealing part of the ball 11 just faces the sealing part of the valve seat; then the hand wheel 29 is rotated clockwise, and the hand wheel 29 synchronously carries the valve rod screw
The nut 27 and all the parts connected into a whole synchronously move, the valve rod 33 descends under the action of the rotation of the valve rod nut 27, the descending valve rod 33 drives the supporting block 17, the first connecting rod 14 and the second connecting rod 15 to descend so as to open the ball 11, and the valve is in a sealing state. When the ball valve needs to be opened, the hand wheel 29 is rotated anticlockwise firstly, the valve rod 33 is pushed to be lifted upwards through the synchronous rotation of the valve rod nut 27, the ball body 11 is already positioned by the lower valve rod 10 and the lower valve rod mandrel 12, the ball body 11 cannot be lifted upwards, only the opening of the ball body 11 can be pulled to be contracted inwards, at the moment, the whole volume of the ball body 11 is reduced, the ball body 11 is separated from the valve seat sealing part of the left valve body 13 and the right valve body 13, the handle 36 is pushed, and the positioning pin 24 connected with the handle 36 is connected with the valve seat sealing part
The transverse groove along the inverted L-shaped groove hole of the bracket 32 rotates ninety degrees anticlockwise, the ball body 11 in the inner cavity of the valve body synchronously rotates ninety degrees, the water flowing port of the ball body 11 is aligned with the water flowing channel of the valve body, and the ball valve is opened. When the valve is opened to be closed, the handle 36 is rotated to synchronously rotate the valve rod 33, and then the hand wheel 29 is rotated to move the valve rod 33 downwards, so that the ball valve is opened and sealed to be closed; when the valve is opened from the closed state, the hand wheel 29 is rotated reversely, the valve rod 33 is lifted upwards, the whole volume of the ball body 11 is reduced, the handle 36 is rotated reversely, the valve rod rotates synchronously, the ball valve rotates synchronously to be aligned with the fluid channel of the valve body, and the ball valve is opened. The valve is opened and closed by a manual operation handle and a hand wheel, so that the strength is high, the speed is low, and the application range is limited.
At present, the electro-hydraulic actuator is widely applied to automatic driving and controlling the opening, closing and keeping of a pipeline valve. The electro-hydraulic actuator comprises a high-pressure oil supply pipeline, an electromagnetic reversing valve, an oil cylinder and an oil return pipeline (the oil cylinder of CN108916441A is a rotary oil cylinder). The connection combination of the oil cylinder and the electromagnetic directional valve is called as an actuating mechanism.
Disclosure of Invention
In order to solve the technical problem, the utility model aims at providing a device of zero friction ball valve of electricity liquid executor drive and use device driven zero friction ball valve.
The above-mentioned zero friction ball valve that stretches out and draws back opens and shuts and is accomplished by its valve rod output straight line stroke and angle stroke in turn, consequently the utility model provides an above-mentioned problem's thinking is, replaces hand wheel and handle by electric liquid executor, drives the valve rod as above-mentioned output.
The device for driving the zero-friction ball valve by the electro-hydraulic actuator comprises the electro-hydraulic actuator and is characterized in that: the electro-hydraulic actuator comprises two actuating mechanisms, wherein one actuating mechanism is a linear actuating mechanism consisting of an electromagnetic directional valve and a linear oil cylinder (a common oil cylinder with a piston rod at the output end), the other actuating mechanism is a rotary actuating mechanism consisting of an electromagnetic directional valve and a rotary oil cylinder (an oil cylinder with a gear and a torque output at the output end), the linear actuating mechanism is connected with a mechanical drive directional valve (hereinafter referred to as a motorized directional valve) in series and then connected with the rotary actuating mechanism in parallel on a hydraulic oil path, and an electromagnetic valve is connected to an oil supply pipeline of the electro-hydraulic actuator;
the mechanical reversing valve, the linear oil cylinder, the rotary oil cylinder and the neck flange are sequentially installed together from top to bottom, specifically, the mechanical reversing valve is installed on an upper end cover of the linear oil cylinder, a thimble of the mechanical reversing valve downwards penetrates through the upper end cover to enter a cylinder cavity of the linear oil cylinder, an adjusting screw is installed on the upper end face of a piston of the linear oil cylinder, and a screw cap of the adjusting screw faces the thimble; the linear oil cylinder, the rotary oil cylinder and the neck flange are sequentially and rigidly connected, wherein a piston rod of the linear oil cylinder faces downwards, an output gear of the rotary oil cylinder is arranged on the piston rod of the linear oil cylinder in a key connection mode, the piston rod and a connecting rod are sequentially and rigidly connected (transmitting torque and transmitting up and down movement), the connecting position of the piston rod and the connecting rod is positioned in a neck cavity of the neck flange, three travel switches or proximity switches for controlling an electromagnetic reversing valve are arranged on the wall of the neck cavity, two upper first travel switches and second travel switches or proximity switches are distributed on the same horizontal plane at 90 degrees, one lower travel switch or proximity switch is positioned below the second travel switch or proximity switch, a convex block capable of triggering the three travel switches or proximity switch contacts is arranged on the piston rod or the connecting rod in the neck cavity, and the triggerable means that the convex block can touch the contact of the upper travel switch or proximity switch when the piston rod runs to the upper end, When the piston rod runs to the lower end, the lug can touch the contact of the lower stroke switch or the proximity switch.
The zero-friction telescopic ball valve driven by the device comprises a zero-friction telescopic ball valve and a valve rod thereof, wherein a piston rod, a connecting rod and the valve rod are sequentially and rigidly connected, and a neck flange is arranged on the zero-friction telescopic ball valve.
In the driving process, when the ball valve is in a closed state, the piston of the linear oil cylinder is in a lower position, and the motorized reversing valve is in a cut-off state. When the ball valve is opened from a closed state, the electromagnetic valve on the oil supply pipeline is electrified, high-pressure oil enters a lower cavity of the linear oil cylinder through the electromagnetic reversing valve of the linear actuating mechanism, a piston rod of the linear oil cylinder is driven to move upwards, a valve rod of the telescopic ball valve is driven to move upwards, a ball valve core of the telescopic ball valve is contracted, and sealing is removed; meanwhile, an adjusting screw on the upper end face of the piston of the linear oil cylinder touches a thimble of the mechanical reversing valve, the mechanical reversing valve is conducted, high-pressure oil in an oil supply pipeline enters a cylinder barrel on the left face of the rotary oil cylinder through the mechanical reversing valve and an electromagnetic reversing valve of the rotary executing mechanism, an output gear of the rotary oil cylinder, a piston rod of the linear oil cylinder, a connecting rod, a valve rod and a valve core are driven to synchronously rotate forwards, a fluid port of the valve core is aligned with a fluid channel of the valve body, and the ball valve is opened; meanwhile, when the convex block rotates to 90 degrees positively, the contact of the first travel switch or the proximity switch is triggered to send a signal to the electric cabinet, the electric cabinet enables the electromagnetic directional valve on the oil supply pipeline to be closed in a power-down mode, and the system maintains the open state of the valve.
If the ball valve is switched off from the open state, the electromagnetic directional valve on the oil supply pipeline and the electromagnetic directional valve of the rotary actuating mechanism are electrified, high-pressure oil in the oil supply pipeline sequentially enters the right cylinder barrel of the rotary oil cylinder through the two electromagnetic directional valves, an output gear of the rotary oil cylinder, a piston rod of the linear oil cylinder, a connecting rod, a valve rod and a valve core are driven to synchronously rotate reversely by 90 degrees, and a fluid port of the valve core is perpendicular to a fluid channel of the valve body; and meanwhile, when the lug is reversely rotated to 90 degrees, the lug triggers a contact of a second travel switch or a proximity switch to send a signal to the electric cabinet, and the electric cabinet enables the electromagnetic directional valve of the rotary actuating mechanism to be powered off and the electromagnetic directional valve of the linear actuating mechanism to be powered on. High-pressure oil of an oil supply pipeline enters an upper cavity of the linear oil cylinder through an electromagnetic directional valve of the linear actuating mechanism, and a piston rod, a connecting rod and a valve rod of the linear oil cylinder are driven to move downwards to prop open a valve core of the ball valve to a sealing position; meanwhile, the convex block also moves downwards along with the convex block, and the convex block is triggered to the contact of the down stroke switch or the proximity switch and sends a signal to the electric control box, and the electric control box enables the electromagnetic directional valve of the oil supply pipeline and the electromagnetic directional valve of the linear actuating mechanism to be powered off simultaneously, so that the valves are in a sealed closed state and locked.
Compared with the prior art, the utility model has the positive effects that: the automatic control zero-friction ball valve is realized, particularly a PLC is arranged in an electric cabinet to carry out logic control on the electromagnetic directional valve and the travel switch, and the quick action of less than 0.5 second can be realized.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of the piston rod of the linear oil cylinder of the present invention when it runs to the lower end.
Detailed Description
The device for driving the zero-friction ball valve by the electro-hydraulic actuator comprises the electro-hydraulic actuator, wherein two actuating mechanisms of the electro-hydraulic actuator are provided, one actuating mechanism is a linear actuating mechanism consisting of an electromagnetic directional valve 18 and a linear oil cylinder 1, the other actuating mechanism is a rotary actuating mechanism consisting of an electromagnetic directional valve 15 and a rotary oil cylinder 4, the linear actuating mechanism is connected with a motor-driven directional valve 8 in series and then connected with the rotary actuating mechanism in parallel on a hydraulic oil path, the two actuating mechanisms share an oil supply pipeline and an oil return pipeline, and the oil supply pipeline of the electro-hydraulic actuator is connected with an electromagnetic directional valve 14.
The mechanical reversing valve, the linear oil cylinder, the rotary oil cylinder and the neck-provided flange 6 are sequentially installed together from top to bottom, specifically, the mechanical reversing valve is installed on an upper end cover of the linear oil cylinder, a thimble 22 of the mechanical reversing valve downwards penetrates through the upper end cover to enter a cylinder cavity of the linear oil cylinder, an adjusting screw 21 is installed on the upper end surface of a piston 2 of the linear oil cylinder, a screw cap of the adjusting screw faces the thimble, and the adjusting screw is used for adjusting the size of an upward stroke of the piston; the linear oil cylinder, the rotary oil cylinder and the neck flange are rigidly connected in sequence, wherein a piston rod 2-1 of the linear oil cylinder faces downwards, an output gear 3 of the rotary oil cylinder is arranged on the piston rod of the linear oil cylinder in a key connection mode, the piston rod 2-1 and a connecting rod 7 are connected by using a rigid coupling 5, the rigid coupling 5 is positioned in a neck cavity of the neck flange, three travel switches for controlling the electromagnetic reversing valve are arranged on the wall of the neck cavity, two of the travel switches are arranged above and below, two of the first travel switches are arranged above (positioned on the back side of a drawing 1 and cannot be seen) and the second travel switch 23-2 are distributed on the same horizontal plane at 90 degrees, one of the lower travel switches 23-3 is positioned below the second travel switch, a bump 51 capable of triggering contacts of the three travel switches is arranged on the rigid coupling 5, and the triggerable means that the bump can touch the contacts of the upper travel switch or the proximity switch when the piston rod runs to the upper end, When the piston rod runs to the lower end, the lug can touch the contact of the lower stroke switch or the proximity switch.
The zero-friction telescopic ball valve driven by the device comprises a zero-friction telescopic ball valve and a valve rod thereof (namely a zero-friction telescopic ball valve of CN210661446U and a valve rod 33 thereof, a piston rod 2-1, a connecting rod 7 and the valve rod are rigidly connected in sequence, wherein the connecting rod 7 and the valve rod are connected by a sleeve type rigid coupling, and a flange with a neck is arranged on the zero-friction telescopic ball valve.
The oil supply pipeline also comprises an accumulator 12, the motor 9 drives the hydraulic pump 10 to suck oil from an oil tank, and high-pressure oil is input to the accumulator 12 to be stored through the one-way valve 11. A hydraulic lock 17 is connected on a hydraulic oil path between an electromagnetic directional valve 18 of the linear actuating mechanism and the linear oil cylinder 1, and a hydraulic lock 16 is connected on a hydraulic oil path between an electromagnetic directional valve 15 of the rotary actuating mechanism and the rotary oil cylinder 4, so that the oil cylinder and the ball valve can be stably operated.
In the driving process, when the ball valve is in a closed state, the piston of the linear oil cylinder is in a lower position, and the motorized reversing valve is in a cut-off state. When the ball valve is opened from the closed state, the electromagnetic directional valve 14 on the oil supply pipeline is electrified, high-pressure oil enters a lower cavity of the linear oil cylinder 1 through the electromagnetic directional valve 18 of the linear actuating mechanism and a hydraulic lock 17 of the linear actuating mechanism, a piston rod 2-1 of the linear oil cylinder is driven to move upwards, a valve rod is driven to move upwards, a ball valve core of the ball valve is contracted, and sealing is removed; meanwhile, an adjusting screw on the upper end face of the piston of the linear oil cylinder touches an ejector pin of the mechanical reversing valve, the mechanical reversing valve 8 is conducted, high-pressure oil in an oil supply pipeline enters a left cylinder barrel of the rotary oil cylinder 4 through the mechanical reversing valve and an electromagnetic reversing valve 15 of the rotary actuating mechanism, an output gear 3 of the rotary oil cylinder, a piston rod 2-1 of the linear oil cylinder, a connecting rod 7, a valve rod and a valve core are driven to synchronously rotate forwards, a fluid port of the valve core is aligned with a fluid channel of the valve body, and the ball valve is opened; meanwhile, when the bump 51 rotates forward to 90 degrees, the contact of the first travel switch (located on the back of the figure 1 and cannot be seen) is triggered, a signal is sent to the electric cabinet, the electric cabinet enables the electromagnetic directional valve 14 on the oil supply pipeline to be closed in a power-down mode, and the system keeps the valve open state.
If the ball valve is switched off from the open state, the electromagnetic directional valve 14 on the oil supply pipeline and the electromagnetic directional valve 18 of the rotary actuating mechanism are powered on, high-pressure oil in the oil supply pipeline sequentially enters the right cylinder barrel of the rotary oil cylinder through the two electromagnetic directional valves and the hydraulic lock 16, an output gear of the rotary oil cylinder, a piston rod of the linear oil cylinder, a connecting rod, a valve rod and a valve core are driven to synchronously rotate reversely by 90 degrees, and a fluid port of the valve core is perpendicular to a fluid channel of the valve body; meanwhile, when the bump 51 is reversely rotated to 90 degrees, the contact of the second travel switch 23-2 is triggered to send a signal to the electric control box, and the electric control box enables the electromagnetic directional valve 18 of the rotary actuating mechanism to be powered off and the electromagnetic directional valve 15 of the linear actuating mechanism to be powered on. High-pressure oil of an oil supply pipeline enters an upper cavity of the linear oil cylinder 1 through an electromagnetic directional valve of the linear actuating mechanism and a hydraulic lock 17 of the electromagnetic directional valve, and drives a piston rod, a connecting rod and a valve rod of the linear oil cylinder to move downwards to prop open a valve core of the ball valve to a sealing position; meanwhile, the lug 51 also moves downwards along with the lug to trigger a contact of the lower travel switch 23-3 to send a signal to the electric control box, and the electric control box enables the oil supply pipeline electromagnetic directional valve 18 and the electromagnetic directional valve 18 of the linear actuating mechanism to be powered off simultaneously, so that the valves are in a sealed closed state and locked.
The feedback signal of the pressure switch 13 in fig. 1 is used to automatically control the motor 9 to achieve low voltage start and high voltage stop. The drain shut-off valve 19 is used to relieve the accumulator manually if necessary. The relief valve 20 is used to limit the maximum pressure in the system to avoid dangerous pressure build-up.
Claims (3)
1. The utility model provides a device of zero friction ball valve of electric liquid executor drive, includes electric liquid executor, characterized by: the electro-hydraulic actuator comprises two actuating mechanisms, one is a linear actuating mechanism consisting of an electromagnetic reversing valve and a linear oil cylinder, the other is a rotary actuating mechanism consisting of an electromagnetic reversing valve and a rotary oil cylinder, the linear actuating mechanism is connected with the motor-driven reversing valve in series and then connected with the rotary actuating mechanism in parallel on a hydraulic oil line, and an electromagnetic valve is connected to an oil supply pipeline of the electro-hydraulic actuator;
the mechanical reversing valve, the linear oil cylinder, the rotary oil cylinder and the neck flange are sequentially installed together from top to bottom, specifically, the mechanical reversing valve is installed on an upper end cover of the linear oil cylinder, a thimble of the mechanical reversing valve downwards penetrates through the upper end cover to enter a cylinder cavity of the linear oil cylinder, an adjusting screw is installed on the upper end face of a piston of the linear oil cylinder, and a screw cap of the adjusting screw faces the thimble; the linear oil cylinder, the rotary oil cylinder and the flange with the neck are sequentially and rigidly connected, wherein a piston rod of the linear oil cylinder faces downwards, an output gear of the rotary oil cylinder is arranged on the piston rod of the linear oil cylinder in a key connection mode, the piston rod and a connecting rod are sequentially and rigidly connected, the joint of the piston rod and the connecting rod is positioned in a neck cavity with the flange with the neck, three travel switches or proximity switches for controlling the electromagnetic reversing valve are arranged on the wall of the neck cavity, two first travel switches or proximity switches and two second travel switches or proximity switches are distributed on the same horizontal plane at 90 degrees, one lower travel switch or proximity switch is positioned below the second travel switch or proximity switch, a convex block capable of triggering the three travel switches or proximity switch contacts is arranged on the piston rod or the connecting rod in the neck cavity, and the triggerable convex block can touch the contact of the upper travel switch or proximity switch when the piston rod runs to the upper end, When the piston rod runs to the lower end, the lug can touch the contact of the lower stroke switch or the proximity switch.
2. The apparatus of claim 1 wherein the electro-hydraulic actuator drives a zero-friction ball valve, and wherein: the hydraulic lock is connected to the hydraulic oil path between the electromagnetic directional valve and the linear oil cylinder of the linear executing mechanism, and the hydraulic lock is connected to the hydraulic oil path between the electromagnetic directional valve and the rotary oil cylinder of the rotary executing mechanism.
3. A zero-friction ball valve driven by the device for driving the zero-friction ball valve by using the electro-hydraulic actuator as claimed in claim 1 or 2, which comprises a zero-friction telescopic ball valve and a valve rod thereof, and is characterized in that: the piston rod, the connecting rod and the valve rod are sequentially and rigidly connected, and the neck flange is arranged on the zero-friction telescopic ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120169849.7U CN214466486U (en) | 2021-01-22 | 2021-01-22 | Device for driving zero-friction ball valve by electro-hydraulic actuator and zero-friction ball valve driven by device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120169849.7U CN214466486U (en) | 2021-01-22 | 2021-01-22 | Device for driving zero-friction ball valve by electro-hydraulic actuator and zero-friction ball valve driven by device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214466486U true CN214466486U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120169849.7U Active CN214466486U (en) | 2021-01-22 | 2021-01-22 | Device for driving zero-friction ball valve by electro-hydraulic actuator and zero-friction ball valve driven by device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214466486U (en) |
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2021
- 2021-01-22 CN CN202120169849.7U patent/CN214466486U/en active Active
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Assignee: SHENYANG NAISI CONTROL TECHNOLOGY CO.,LTD. Assignor: SHENYANG NORTHEAST ELECTRIC POWER CONTROL Co.,Ltd. Contract record no.: X2023210000146 Denomination of utility model: A device for driving zero friction ball valves with electro-hydraulic actuators and its driven zero friction ball valves Granted publication date: 20211022 License type: Common License Record date: 20230927 |