CN216590076U - Electric servo valve - Google Patents
Electric servo valve Download PDFInfo
- Publication number
- CN216590076U CN216590076U CN202122463259.8U CN202122463259U CN216590076U CN 216590076 U CN216590076 U CN 216590076U CN 202122463259 U CN202122463259 U CN 202122463259U CN 216590076 U CN216590076 U CN 216590076U
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- valve
- valve body
- valve core
- rotor
- screw rod
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- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 230000033001 locomotion Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 abstract description 11
- 239000012530 fluid Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model discloses an electric servo valve which comprises a valve body, a valve core, a transmission assembly and a motor assembly, wherein the valve core is positioned in the valve body, one end of the transmission assembly is connected with the motor assembly, and the other end of the transmission assembly is connected with the valve core to drive the valve core to slide in the valve body. The valve body is internally provided with various liquid channels such as a liquid inlet channel, a liquid outlet channel and a liquid return channel, and the circumference of the valve core is also provided with various liquid channels corresponding to the valve body. The valve core moves linearly in the valve body, so that a preset fluid channel is opened or closed by any opening amount, the high-precision control of any opening amount of the valve core position is realized, and the control occasion that the flow is required to be controlled accurately and the valve core has high precision, low power consumption and no hysteresis loop in engineering is solved.
Description
Technical Field
The utility model belongs to the technical field of electric valves, and particularly relates to an electric servo valve.
Background
With the development and progress of valve technology, the requirements of consumers and process production on electric valves are higher and higher, the requirements of process level and control are continuously improved, and the requirements of production of required accessory devices are higher and higher. Valves are becoming increasingly important as the primary control components in fluid control systems. Higher control requirements are provided for the characteristics of control requirements, safety, flexibility and the like of the valve.
At present, manual valves or electromagnetic valves are adopted for controlling the fluid flow mostly, and the two types of control valves have relatively simple structures and relatively low manufacturing cost. However, because the manual valve completely depends on the intuitive feeling of people to control the fluid flow, the problems of poor micro-adjustment and low control precision exist; the electromagnetic valve generally has two working states of opening a channel through which fluid passes and closing the channel through which the fluid passes, the flow of the fluid is regulated by the opening frequency of the electromagnetic valve when the fluid passes, and the problems of poor micro-regulation and low control precision exist; especially, the suction impact caused by the repeated opening and closing of the electromagnetic valve generates impact noise, and the valve core is easy to damage.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide the electric servo valve which is simple in structure, convenient to use and capable of accurately controlling the flow of the valve body.
In order to realize the purpose, the technical scheme of the utility model is as follows: the electric servo valve comprises a valve body, a valve core, a transmission assembly and a motor assembly, wherein the valve core is positioned in the valve body, one end of the transmission assembly is connected with the motor assembly, and the other end of the transmission assembly is connected with the valve core to drive the valve core to slide in the valve body.
Furthermore, a positioning rod is arranged on the valve core, a guide groove matched with the positioning rod is arranged on the valve body, and the positioning rod is connected in the guide groove in a sliding mode.
Furthermore, the transmission assembly comprises a screw rod and a nut, the nut is fixedly connected to the valve core, one end of the screw rod is matched with the nut, one end of the screw rod is connected with the motor assembly, the motor assembly drives the screw rod to rotate, and the screw rod drives the nut to do linear motion under the matching of the positioning rod and the guide groove, so that the valve core is driven to slide in the valve body.
Further, motor element includes stator and rotor, and stator fixed connection is on the valve body, and the one end of keeping away from the stator on the rotor is connected with the screw rod.
Furthermore, a connector is arranged between the rotor and the screw rod, one end of the connector is connected with the rotor, the other end of the connector is connected with the screw rod, and the screw rod, the connector and the rotor rotate synchronously.
Further, the motor assembly further comprises a driving plate, and the driving plate is electrically connected with the rotor to control the movement of the rotor.
Further, the motor assembly further comprises an encoder, the encoder is connected with the CPU on the drive board, and the encoder is installed on the stator and used for detecting the rotation angle and the speed of the rotor and transmitting the rotation angle and the speed back to the CPU on the drive board for closed-loop control.
Furthermore, electronic servo valve still includes the end cover, is equipped with the cavity that is used for placing motor element in the valve body, and stator, rotor, drive plate and encoder assemble in the cavity and fixed through the end cover, and the end cover passes through bolt-up connection on the terminal surface of valve body.
The technical scheme adopted by the utility model has the advantages that:
the valve core is driven by the motor rotor to move linearly in the valve body, and the encoder can monitor the speed and the rotation angle of the motor rotor in real time and feed back the speed and the rotation angle to the drive board CPU in time for closed-loop control, so that the high-precision control of any opening amount of the valve core position is realized; the valve has the advantages of high control precision, low power consumption, no hysteresis effect and the like, can be powered off to keep the opening of a valve port, and solves the problem that the engineering needs to accurately control the flow and has high precision, low power consumption and no hysteresis.
Drawings
The utility model is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic view of an electric servo valve according to the present invention.
The labels in the above figures are respectively: 1. a valve body; 11. a guide groove; 12. a cavity; 2. a valve core; 3. positioning a rod; 4. a transmission assembly; 41. a screw; 42. a nut; 5. a connector; 6. a motor assembly; 61. a stator; 62. a rotor; 63. a drive plate; 64. an encoder.
Detailed Description
In the present invention, it is to be understood that the term "length"; "Width"; "Up"; "Down"; "front"; "Back"; "left"; "Right"; "vertical"; "horizontal"; "Top"; "bottom" "inner"; "outer"; "clockwise"; "counterclockwise"; "axial"; "planar direction"; "circumferential" and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the indicated device or element must have a particular orientation; constructed and operative in a particular orientation and therefore should not be construed as limiting the utility model.
As shown in fig. 1, an electric servo valve includes a valve body 1, a valve core 2, a transmission assembly 4 and a motor assembly 6, wherein the valve core 2 is located in the valve body 1, one end of the transmission assembly 4 is connected with the motor assembly 6, and the other end of the transmission assembly 4 is connected with the valve core 2 to drive the valve core 2 to slide in the valve body 1. The valve body is internally provided with various liquid channels, such as a liquid inlet channel (P), a liquid outlet channel (A, B) and a liquid return channel (T), and the circumference of the valve core is also provided with various liquid channels corresponding to the valve body. The valve core 2 moves linearly in the valve body 1, so that a preset liquid flow channel is opened or closed by any opening amount, and the high-precision control of any opening amount of the valve core position is realized.
In order to prevent the valve core from rotating in the valve body and influencing the precision control of the electric servo valve, the valve core 2 is provided with the positioning rod 3, the valve body 1 is provided with a guide groove 11 matched with the positioning rod 3, the positioning rod 3 is connected in the guide groove 11 in a sliding manner, the positioning rod 3 is matched with the guide groove 11 to play a limiting and guiding role, and the movement of the valve core in the valve body is ensured to be linear movement.
The transmission assembly 4 comprises a screw rod 41 and a nut 42, the nut 42 is fixedly connected to the valve core 2, one end of the screw rod 41 is matched with the nut 42, one end of the screw rod 41 is connected with the motor assembly 6, the motor assembly 6 drives the screw rod 41 to rotate, the screw rod drives the nut to do linear motion under the matching of the positioning rod and the guide groove, and then the valve core is driven to slide in the valve body.
The motor assembly 6 comprises a stator 61 and a rotor 62, the stator 61 is fixedly connected to the valve body 1, and one end of the rotor 62 far away from the stator 61 is connected with the screw rod 41. A connector 5 is arranged between the rotor 62 and the screw rod 41, one end of the connector 5 is connected with the rotor 62, the other end of the connector 5 is connected with the screw rod 41, and the screw rod 41, the connector 5 and the rotor 62 rotate synchronously. Preferably, the connector 5 may be a spline or a coupling or the like.
The motor assembly 6 further includes a drive plate 63, the drive plate 63 being electrically connected to the rotor 62 to control movement of the rotor 62. The motor assembly 6 further comprises an encoder 64, the encoder 64 is connected with the CPU on the driving plate 63, and the encoder 64 is mounted on the stator 61 and used for detecting the rotation angle and the speed of the rotor 62 and transmitting the rotation angle and the speed back to the CPU on the driving plate 63 for closed-loop control.
The electric servo valve further comprises an end cover 7, a cavity 12 for placing the motor assembly 6 is formed in the valve body 1, the stator 61, the rotor 62, the driving plate 63 and the encoder 64 are assembled in the cavity 12 and fixed through the end cover 7, and the end cover 7 is fixedly connected to the end face of the valve body 1 through bolts. Transmission assembly 4, connector 5 and motor element 6 all integrate in valve body 1, integrate the degree height.
When an external control instruction is sent to a drive plate of the motor assembly, the drive plate drives a motor to rotate at a corresponding speed according to the feeding amount of the instruction, a rotor drives a screw to rotate through a connector, the screw drives a nut to do linear motion under the matching of a positioning rod and a guide groove, and then a valve core is driven to slide in a valve body, so that a preset fluid channel is opened or closed at any opening amount, the speed and the position of the fluid channel correspond to the speed and the rotating angle of a motor rotor, and meanwhile, the rotating angle of the rotor is monitored and transmitted back to a drive plate CPU on a stator by a position encoder on the stator to perform closed-loop control, and the high-precision control of any opening amount of the position of the valve core is realized.
The valve core is driven by the motor rotor to move linearly in the valve body, and the encoder can monitor the speed and the rotation angle of the motor rotor in real time and feed back the speed and the rotation angle to the drive board CPU in time for closed-loop control, so that the high-precision control of any opening amount of the valve core position is realized; the valve has the advantages of high control precision, low power consumption, no hysteresis effect and the like, can be powered off to keep the opening of a valve port, and solves the problem that the engineering needs to accurately control the flow and has high precision, low power consumption and no hysteresis.
The utility model is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the utility model is not limited by the above-mentioned manner, and it is within the scope of the utility model to adopt various insubstantial modifications of the technical solution of the utility model or to apply the concept and technical solution of the utility model directly to other occasions without modification.
Claims (8)
1. An electric servo valve characterized by: the valve comprises a valve body (1), a valve core (2), a transmission assembly (4) and a motor assembly (6), wherein the valve core (2) is positioned in the valve body (1), one end of the transmission assembly (4) is connected with the motor assembly (6), and the other end of the transmission assembly (4) is connected with the valve core (2) to drive the valve core (2) to slide in the valve body (1).
2. An electric servo valve as defined in claim 1 wherein: the valve core (2) is provided with a positioning rod (3), the valve body (1) is provided with a guide groove (11) matched with the positioning rod (3), and the positioning rod (3) is connected in the guide groove (11) in a sliding mode.
3. An electric servo valve as defined in claim 2 wherein: the transmission assembly (4) comprises a screw rod (41) and a nut (42), the nut (42) is fixedly connected to the valve core (2), one end of the screw rod (41) is matched with the nut (42), one end of the screw rod (41) is connected with the motor assembly (6), the motor assembly (6) drives the screw rod (41) to rotate, and the screw rod drives the nut to do linear motion under the matching of the positioning rod and the guide groove, so that the valve core is driven to slide in the valve body.
4. An electric servo valve as defined in claim 3 wherein: the motor assembly (6) comprises a stator (61) and a rotor (62), the stator (61) is fixedly connected to the valve body (1), and one end, far away from the stator (61), of the rotor (62) is connected with the screw rod (41).
5. An electric servo valve as defined in claim 4 wherein: a connector (5) is arranged between the rotor (62) and the screw rod (41), one end of the connector (5) is connected with the rotor (62), the other end of the connector (5) is connected with the screw rod (41), and the screw rod (41), the connector (5) and the rotor (62) rotate synchronously.
6. An electric servo valve as claimed in claim 4 or 5, wherein: the motor assembly (6) further comprises a driving plate (63), and the driving plate (63) is electrically connected with the rotor (62) to control the movement of the rotor (62).
7. An electric servo valve as defined in claim 6 wherein: the motor assembly (6) further comprises an encoder (64), the encoder (64) is connected with a CPU on the driving plate (63), and the encoder (64) is installed on the stator (61) and used for detecting the rotation angle and the speed of the rotor (62) and transmitting the rotation angle and the speed back to the CPU on the driving plate (63) for closed-loop control.
8. An electric servo valve as defined in claim 7 wherein: the electric servo valve further comprises an end cover (7), a cavity (12) used for placing the motor assembly (6) is arranged in the valve body (1), the stator (61), the rotor (62), the driving plate (63) and the encoder (64) are assembled in the cavity (12) and fixed through the end cover (7), and the end cover (7) is connected to the end face of the valve body (1) through bolts in a fastening mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122463259.8U CN216590076U (en) | 2021-10-13 | 2021-10-13 | Electric servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122463259.8U CN216590076U (en) | 2021-10-13 | 2021-10-13 | Electric servo valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216590076U true CN216590076U (en) | 2022-05-24 |
Family
ID=81638903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122463259.8U Active CN216590076U (en) | 2021-10-13 | 2021-10-13 | Electric servo valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216590076U (en) |
-
2021
- 2021-10-13 CN CN202122463259.8U patent/CN216590076U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An electric servo valve Effective date of registration: 20230904 Granted publication date: 20220524 Pledgee: Wuhu Yangzi rural commercial bank Limited by Share Ltd. Pledgor: Faner Intelligent Technology Group Co.,Ltd. Registration number: Y2023980055142 |