CN214888036U - High-frequency-response proportional valve - Google Patents
High-frequency-response proportional valve Download PDFInfo
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- CN214888036U CN214888036U CN202121341165.7U CN202121341165U CN214888036U CN 214888036 U CN214888036 U CN 214888036U CN 202121341165 U CN202121341165 U CN 202121341165U CN 214888036 U CN214888036 U CN 214888036U
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Abstract
The utility model relates to a high-frequency-response proportional valve, wherein a pilot control valve is a high-frequency-response servo valve, is provided with a control piston and a valve sleeve and has servo performance; the main valve is a proportional direction valve with servo performance and position feedback, and the pilot control valve and the main valve are controlled in a closed loop mode, so that speed, position and pressure closed loops can be tested. Is less sensitive to contamination. The main valve can control the direction and flow rate of liquid flow simultaneously, and in the course of process control, under the condition of having no additional direction and throttle valve it can implement quick and low-speed stroke control, and the speed change process is not sudden change but stepless change. The liquid flow flowing into and out of the actuator of the utility model is constrained by two control valve ports; with the cooperation of integrated electrically controlled device, can realize accelerating and the process of slowing down convenient and reliable, the time of accelerating and decelerating can be by integrated electrically controlled device preset, and irrelevant with the fluid characteristic, the utility model is suitable for a most closed loop speed, position, pressure closed loop system.
Description
Technical Field
The utility model relates to a high frequency response valve in the hydraulic system field especially relates to a high frequency response proportional valve.
Background
The existing high-frequency response valve has small valve core flow, so that the gain of the high-frequency response valve for controlling the oil flow is small, and the response frequency of the whole valve is influenced.
In view of the above-mentioned defects that exist in the existing high-frequency response valve, this designer is through continuous research, design to after trial run and improvement repeatedly, establish the utility model discloses that really possesses practical value finally.
Disclosure of Invention
An object of the utility model is to overcome the defect that current high frequency response valve exists, and provide a high frequency response proportional valve of novel structure, the technical problem that solve is that improve hydraulic system's job stabilization nature and reliability, more is applicable to the industrial process to be suitable for the practicality more.
Another object of the present invention is to provide a high frequency response proportional valve with a novel structure, which is widely applied in hydraulic industry to improve productivity, and is more practical.
Another object of the present invention is to provide a high frequency response proportional valve with a novel structure, which can replace the existing products in many fields, and improve the independent production capacity of the hydraulic industry, thereby having industrial utilization value.
The purpose of the utility model and the technical problem to be solved are realized by adopting the following technical scheme. The basis the utility model provides a high frequency response proportional valve mainly includes main valve, integrated electrically controlled device and the pilot control valve of preset acceleration and deceleration time, and wherein, the main valve is servo performance area position feedback's proportional direction valve, and the pilot control valve is high frequency response servo valve, has servo performance, pilot control valve and main valve closed-loop control.
The purpose of the utility model and the technical problem to be solved can be further realized by adopting the following technical measures.
Furthermore, the main valve comprises a shell and a main valve core, the main valve core is arranged in the shell and is controlled by a pilot control valve, and the main valve core is closed-loop position control with middle position compensation.
Further, the integrated electronic control device is provided with an inductive position sensor for the main valve.
The main valve further comprises a first proportional electromagnet, a second proportional electromagnet and a spring, the left end and the right end of the pilot control valve are respectively provided with the first proportional electromagnet and the second proportional electromagnet for changing the electromagnetic proportion, one end of the main valve core is provided with the spring, the other end of the main valve core is provided with an inductive position sensor, an electric sensor is arranged on one side of the pilot control valve, and the pilot control valve is controlled by changing the electromagnetic force of the first proportional electromagnet and the electromagnetic force of the second proportional electromagnet; the command value and the actual value are integrated in the integrated electric control device; along with the command value of 0V, the integrated electric control device controls displacement in a closed loop mode, and the main valve core enters a middle position.
Furthermore, the pilot control valve is a direct-acting servo solenoid valve NG6 and is provided with a control piston and a valve sleeve made of steel.
Furthermore, the device also comprises two control valve ports which respectively control the liquid flow flowing into and out of the actuator and are matched with the integrated electric control device, so that the acceleration and deceleration processes can be conveniently and reliably realized.
Compared with the prior art, the utility model obvious advantage and beneficial effect have. It has at least the following advantages:
1. the utility model discloses the pilot valve is direct action type servo solenoid valve NG6, is furnished with control piston and steel bushing, and servo dependable performance, sound construction is durable.
2. The utility model discloses a main valve is direction proportional valve, and the case meso position takes position compensation, and the switching-over is reliable. When the power is off or lost, the spring is centered, and the main valve is in a middle position state. The pilot control valve and the main valve LVDT are controlled in a closed loop PID mode, and closed loops of speed, position and pressure can be tested. Is less sensitive to contamination.
3. The utility model discloses a direction and the flow that a main valve can the simultaneous control liquid stream, in process control, can realize quick and low-speed stroke control under the condition that does not have additional direction and choke valve, the course of change of speed, not sudden change but infinitely variable. With the same large spool travel as the pilot operated directional valve.
4. The liquid flow flowing into and out of the actuator (such as a hydraulic cylinder or a motor) of the utility model is constrained (controlled) by two control valve ports; the integrated electric control device is matched with the integrated electric control device, the acceleration and deceleration processes can be conveniently and reliably realized, and the acceleration and deceleration time can be preset by the integrated electric control device and is irrelevant to the oil characteristics (such as viscosity).
5. The utility model is suitable for a place that requires high to equipment reliability especially needs the strong, the high occasion of reliability requirement of antipollution ability of valve.
6. The utility model is suitable for the occasions with high requirements on the precision of the equipment motion process, such as the synchronous control of double cylinders and multiple cylinders and the coordination control of motion trail, and the occasions with high requirements on the positioning precision, the positioning precision can reach 0.001-0.005 mm; the device is widely applied to occasions requiring precise loading, precise position-force control and speed-force control.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein:
1: a housing 2: main valve core
3: inductive position sensor 4: pilot control valve
5: valve housing 6: inductive sensor
7: first proportional electromagnet 8: second ratio electromagnet
9: spring 10: first pilot control oil chamber
11: second pilot control oil chamber
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to specific embodiments, structures, features and effects of a high frequency response proportional valve according to the present invention with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1, a high frequency response proportional valve according to a preferred embodiment of the present invention mainly includes: the servo control system comprises a main valve, an integrated electric control device and a pilot control valve 4, wherein the main valve is a servo performance proportional direction valve with position feedback, the pilot control valve 4 is a high-frequency response servo valve with servo performance, and the pilot control valve 4 and the main valve are controlled in a closed loop mode.
In particular, the main valve comprises a housing 1 and a main valve element 2, the main valve element 2 being arranged in the housing, the main valve element 2 being controlled by a pilot control valve 4, the main valve element 2 being closed-loop position controlled. The integrated electronic control device is provided with an inductive position sensor 3 for the main valve.
In particular, the main valve further comprises a first proportional electromagnet 7, a second proportional electromagnet 8 and a spring 9, the left end and the right end of the pilot control valve 4 are respectively provided with the first proportional electromagnet 7 and the second proportional electromagnet 8 for changing the electromagnetic proportion, one end of the main valve core 2 is provided with the spring 9, the other end of the main valve core 2 is provided with the inductive position sensor 3, and the electric sensor 6 is arranged on one side of the pilot control valve 4.
The first proportional electromagnet 7 and the second proportional electromagnet 8 are powered off, and the main valve element 2 is positioned at the middle position through a centering spring 9 and pressure feedback; main spool 2 is controlled by pilot control valve 4, main spool 2 is closed-loop position controlled; the pilot control valve 4 is controlled by changing the electromagnetic forces of the first proportional electromagnet 7 and the second proportional electromagnet; the command value and the actual value are integrated in the integrated electric control device; along with the command value of 0V, the integrated electric control device controls the displacement main valve element 2 to enter a middle position in a closed-loop mode.
The pilot control valve 4 of the embodiment is a direct-acting servo solenoid valve NG6, is provided with a control piston and a steel sleeve 5, and has reliable servo performance and firm and durable structure. The main valve is a directional proportional valve, the neutral zone of the main valve core 2 is compensated, and the reversing is reliable. When the power is off or lost, the spring is centered, and the main valve is in a middle position state. The pilot control valve and the main valve LVDT are controlled in a closed loop PID mode, and closed loops of speed, position and pressure can be tested. Less sensitive to contamination; a main valve can control the direction and flow rate of liquid flow at the same time, and in the course of process control, it can implement quick and low-speed stroke control under the condition of that it has no additional direction and throttle valve, and the speed change process is not sudden change but stepless change. With the same large spool travel as the pilot operated directional valve. The flow of fluid into and out of an actuator (e.g., a cylinder or motor) is constrained (controlled) by two control ports; the acceleration and deceleration time can be preset by the integrated electric control device and is irrelevant to the oil characteristics (such as viscosity). The utility model is suitable for a closed loop speed, position, pressure closed loop system of the overwhelming majority. Reference numerals 10 and 11 in fig. 1 are a first pilot-controlled oil chamber and a second pilot-controlled oil chamber, respectively.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.
Claims (6)
1. A high frequency response proportional valve, its characterized in that: the servo control system comprises a main valve, an integrated electric control device for pre-adjusting acceleration and deceleration time and a pilot control valve (4), wherein the main valve is a servo performance proportional direction valve with position feedback, the pilot control valve (4) is a high-frequency response servo valve and has servo performance, and the pilot control valve (4) and the main valve are in closed-loop control.
2. A high frequency response proportioning valve as defined in claim 1 wherein: the main valve comprises a shell (1) and a main valve core (2), the main valve core (2) is arranged in the shell (1), the main valve core (2) is controlled through a pilot control valve (4), and the main valve core (2) is closed-loop position control with position compensation in a middle position.
3. A high frequency response proportioning valve as defined in claim 1 wherein: wherein the integrated electronic control device is provided with an inductive position sensor (3) for the main valve.
4. A high frequency response proportional valve according to any one of claims 1-3, characterized in that the main valve further comprises a first proportional electromagnet (7), a second proportional electromagnet (8) and a spring (9), the left and right ends of the pilot control valve (4) are respectively provided with the first proportional electromagnet (7) and the second proportional electromagnet (8) for changing the electromagnetic proportion, one end of the main spool (2) is provided with the spring (9), the other end of the main spool (2) is provided with the inductive position sensor (3), the electric sensor (6) is arranged at one side of the pilot control valve (4), and the pilot control valve (4) is controlled by changing the electromagnetic force of the first proportional electromagnet (7) and the second proportional electromagnet (8); the command value and the actual value are integrated in the integrated electric control device; along with the command value of 0V, the integrated electric control device controls displacement in a closed loop mode, and the main valve element (2) enters a middle position.
5. A high frequency response proportional valve as defined in claim 4, wherein: the pilot control valve (4) is a direct-acting servo electromagnetic valve NG6 and is provided with a control piston and a valve sleeve (5) made of steel.
6. A high frequency response proportional valve as defined in claim 5, wherein: the two control valve ports are respectively used for controlling liquid flows flowing into and out of the actuator and are matched with the integrated electric control device, so that the acceleration and deceleration processes can be conveniently and reliably realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121341165.7U CN214888036U (en) | 2021-06-16 | 2021-06-16 | High-frequency-response proportional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121341165.7U CN214888036U (en) | 2021-06-16 | 2021-06-16 | High-frequency-response proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214888036U true CN214888036U (en) | 2021-11-26 |
Family
ID=78905210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121341165.7U Active CN214888036U (en) | 2021-06-16 | 2021-06-16 | High-frequency-response proportional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214888036U (en) |
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2021
- 2021-06-16 CN CN202121341165.7U patent/CN214888036U/en active Active
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