CN210440663U - Valve position feedback device for electric actuating mechanism - Google Patents
Valve position feedback device for electric actuating mechanism Download PDFInfo
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- CN210440663U CN210440663U CN201921338261.9U CN201921338261U CN210440663U CN 210440663 U CN210440663 U CN 210440663U CN 201921338261 U CN201921338261 U CN 201921338261U CN 210440663 U CN210440663 U CN 210440663U
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- shaft gear
- absolute encoder
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- valve position
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Abstract
The utility model provides a valve position feedback device for electric actuator, is applicable to and uses the electronic actuator of the Ruiki brand of photoelectricity absolute encoder to upgrade and reform transform. Including feedback shaft gear and main shaft gear, main shaft, many rings of magnetoelectric absolute encoder and the signal line that matches each other, feedback shaft gear fixes on electric actuator feedback shaft to with main shaft gear engagement, transmit the rotation of feedback shaft for main shaft gear, the one end and the main shaft gear connection of main shaft, the other end is the flat head and imbeds the waist type downthehole of many rings of magnetoelectric absolute encoder input shafts, transmits the rotation of main shaft gear for many rings of magnetoelectric absolute encoder input shafts. The detection of the number of rotation turns of the electric actuating mechanism and the connection of the multi-turn magnetoelectric absolute encoder and the feedback shaft of the electric actuating mechanism are realized, and the electromagnetic servo motor has the characteristics of shock resistance, corrosion resistance, pollution resistance and reliable performance.
Description
Technical Field
The utility model relates to a valve position feedback device for electric actuator especially is applicable to the valve position feedback device for electric actuator who upgrades the transformation usefulness to the end base brand electric actuator who uses the absolute encoder of photoelectricity.
Background
The electric actuator in the automatic control system is used for receiving a control signal from a controller, and controlling the opening of a throttling element such as a valve body and the like through the change of the opening of the electric actuator, so as to achieve the aim of controlling the flow. The electric actuator takes a motor as a driving source and takes direct current as a control and feedback signal, when an upper instrument or a computer sends out a control signal, an output shaft of the electric actuator acts proportionally according to the magnitude of the signal to open a valve or an air door to a corresponding opening degree, and the opening degree signal of the system is fed back to the control chamber, so that the adjusting function of the system is completed.
The valve position feedback device of the current Ruiki brand electric actuating mechanism adopts a photoelectric absolute encoder to acquire a valve position signal, and the photoelectric absolute encoder consists of a photoelectric coded disc with a shaft in the center and a photoelectric detection device. The photoelectric absolute encoder converts physical quantities such as a rotational angle position, an angular displacement, an angular velocity and the like of the feedback shaft into digital pulse signals. Because the photoelectric coded disk of the encoder is made of glass materials, the coded disk is easily influenced by external vibration, impact and other environments, and is broken. The use working conditions of the electric actuating mechanism are variable, and part of the electric actuating mechanism works in severe environments such as high temperature, humidity or vibration for a long time, so that the encoder is easy to damage.
Disclosure of Invention
To the technical problem, the utility model provides a simple structure, the adaptation is effectual, can upgrade the valve position feedback device for electric actuator who reforms transform to the end base brand actuating mechanism that uses photoelectric encoder.
In order to achieve the technical purpose, the valve position feedback device for the electric actuating mechanism is fixed on a shell of the electric actuating mechanism through an inner hexagon screw I, and comprises a feedback shaft gear, a main shaft gear sleeve fixing plate, a multi-ring magnetic absolute encoder, a main shaft sleeve, a mounting plate and a signal wire;
the upper end of the main shaft is in a flat head shape and is embedded into a kidney-shaped hole of an input shaft of the multi-circle magnetic absolute encoder, the lower end of the main shaft is connected with the main shaft gear through the inner hexagonal conical end holding screw, and the main shaft gear and the feedback shaft gear are in meshing transmission; an isolation column I is arranged on the mounting plate on one side of the main shaft in parallel with the main shaft through a socket head cap screw II, a main shaft gear sleeve fixing plate is fixed at the bottom end of the isolation column I through a nut, a main shaft gear sleeve is arranged between the main shaft gear sleeve fixing plate and the main shaft gear, a shaft check ring for preventing the main shaft gear sleeve from moving in a crossing mode is arranged on the main shaft gear sleeve, a multi-turn magnetic absolute encoder is connected to the mounting plate through the isolation column II, and a signal line connected with an upper computer is arranged on the multi-turn magnetic absolute encoder.
And the multi-ring magnetic absolute encoder transmits the acquired valve position signal to the electric actuating mechanism control device through a signal wire.
The transmission ratio of the feedback shaft gear to the main shaft gear is 1: 1.
And the valve position feedback device is fixed on the shell of the electric actuating mechanism through three inner hexagon screws III.
Has the advantages that: the multi-ring magnetoelectric absolute encoder is used for a Ruiku brand electric actuating mechanism, due to the limitation of the space in a shell of the Ruiku brand electric actuating mechanism, the multi-ring magnetoelectric absolute encoder cannot be directly connected with a feedback shaft, the multi-ring magnetoelectric absolute encoder is connected with the feedback shaft through the feedback device, and the transmission ratio of a main shaft gear to a feedback shaft gear is 1: 1; the detection of the number of rotation turns of the electric actuating mechanism and the connection of the multi-turn magnetoelectric absolute encoder and the feedback shaft of the electric actuating mechanism are realized, and the electromagnetic servo motor has the characteristics of shock resistance, corrosion resistance, pollution resistance and reliable performance.
Drawings
Fig. 1 is an installation schematic diagram of the valve position feedback device of the present invention.
Fig. 2 is a structural diagram of the valve position feedback device of the present invention.
Fig. 3 is a structural view of the spindle of the present invention.
Fig. 4 is a structural diagram of the multi-turn electromagnetic absolute encoder of the present invention.
In the figure: the device comprises an electric actuator shell 1, a valve position feedback device 2, a hexagon socket head cap screw I3, an electric actuator feedback shaft 4, a feedback shaft gear 5, a hexagon socket head cap screw 6, a spindle gear 7, a spindle 8, a spindle upper end 8-1, a hexagon socket head cap screw 9, a spindle gear sleeve 10, a retaining ring for 11 shafts, a spindle gear sleeve fixing plate 12, a nut 13, an isolation column I14, a hexagon socket head cap screw II 15, a hexagon socket head cap screw III 16, an isolation column II17, an absolute magnetic encoder 18-1 multi-turn, an electromagnetic absolute encoder input shaft 18-1 multi-turn, a retaining ring for 19 shafts, a spindle sleeve 20, a mounting plate 21 and a signal wire 22.
Detailed Description
The embodiments of the present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, the valve position feedback device for electric actuator of the present invention is to remove the original feedback device of the ruiji electric actuator housing 1, install the valve position feedback device 2 of the present invention, and fix the valve position feedback device on the electric actuator housing 1 through the hexagon socket head cap screw 3 in order to ensure that the valve position feedback device is not loosened during the use; the device is fixed on a shell 1 of the electric actuating mechanism through a hexagon socket head cap screw 3, and specifically comprises a feedback shaft gear 5, a spindle gear 7, a spindle 8, a spindle gear sleeve 10, a spindle gear sleeve fixing plate 12, a multi-turn magnetic absolute encoder 18, a spindle sleeve 20, a mounting plate 21 and a signal wire 22;
the feedback shaft gear 5 is connected with an original electric actuator feedback shaft 4 through an inner hexagonal flat end set screw 6, a main shaft sleeve 20 is arranged on an installation plate 21, a main shaft 8 is arranged in the main shaft sleeve 20, a shaft check ring 19 is arranged between the main shaft sleeve 20 and the installation plate 21 to prevent the main shaft 8 from moving in a crossing mode, the upper end 8-1 of the main shaft 8 is in a flat head shape and is embedded into a kidney-shaped hole of an input shaft 18-1 of a multi-circle magnetic absolute encoder 18, the lower end of the main shaft 8 is connected with a main shaft gear 7 through an inner hexagonal conical end set screw 9, and the main shaft gear 7 and the feedback shaft gear 5 are in meshing transmission; an isolation column I14 is arranged on a mounting plate 21 on one side of a main shaft 8 in parallel with the main shaft 8 through a hexagon socket head cap screw 15, a main shaft gear sleeve fixing plate 12 is fixed at the bottom end of the isolation column I14 through a nut 13, a main shaft gear sleeve 10 is arranged between the main shaft gear sleeve fixing plate 12 and a main shaft gear 7, a shaft check ring 11 for preventing movement is arranged on the main shaft gear sleeve 10, a multi-turn magnetic absolute encoder 18 is connected to the mounting plate 21 through an isolation column II17, a signal wire 22 connected with an upper computer is arranged on the multi-turn magnetic absolute encoder 18, and the signal wire 22 transmits a valve position signal collected by the multi-turn magnetic absolute encoder 18 to an electric actuator control device, so that the valve position of the electric actuator is detected. The multi-turn magnetic absolute encoder 18 transmits the acquired valve position signal to the electric actuator control device through a signal line 22. The transmission ratio of the feedback shaft gear 5 to the main shaft gear 7 is 1: 1. The valve position feedback device 2 is fixed on the electric actuating mechanism shell 1 through three hexagon socket head cap screws.
As shown in fig. 2, the feedback shaft gear 5 is sleeved on the feedback shaft 4 of the electric actuator and is fastened by a hexagon socket flat end fastening screw i 6, so that the feedback shaft gear 5 is prevented from moving and slipping. The main shaft 8 penetrates through the main shaft sleeve 20, one end 8-1 of the main shaft 8 is in a flat head shape and is embedded into a kidney-shaped hole of an input shaft 18-1 of the multi-circle magnetic absolute encoder 18, and the other end of the main shaft 8 is connected with the main shaft gear 7 and is fastened by an inner hexagonal cone end fastening screw 9 to prevent the main shaft 8 and the main shaft gear 7 from sliding relatively. The main shaft gear 7 is in meshed transmission with the feedback shaft gear 5. The spindle gear 7 is fixed in a spindle gear sleeve 10. The spindle gear sleeve 10 is mounted on a spindle gear sleeve fixing plate 12 and prevented from moving in series by a shaft retainer ring 11. The main shaft gear sleeve fixing plate 12 is connected to the mounting plate 21 through an isolation column I14 and is fastened by a socket head cap screw II 15 and a nut 13. The spindle cover 20 is fixed to the mounting plate 21 and prevented from moving with the shaft stopper 19. The multi-coil magneto-electric absolute encoder 18 is fixed on the mounting plate 21 through the isolation column II17 and is fastened by the hexagon socket head cap screws III 16, and the signal wire 22 transmits a valve position signal acquired by the multi-coil magneto-electric absolute encoder 18 to the electric actuator control device, so that the rotation number of turns of the electric actuator is detected. The multi-turn magnetic absolute encoder 18 is a mature product purchased in the market.
Claims (4)
1. A valve position feedback device for an electric actuator is fixed on an electric actuator shell (1) through a socket head cap screw (3), and is characterized in that: the device comprises a feedback shaft gear (5), a main shaft gear (7), a main shaft (8), a main shaft gear sleeve (10), a main shaft gear sleeve fixing plate (12), a multi-circle magnetic absolute encoder (18), a main shaft sleeve (20), a mounting plate (21) and a signal wire (22);
the feedback shaft gear (5) is connected with an original electric actuating mechanism feedback shaft (4) of the electric actuating mechanism through an inner hexagonal flat end set screw (6), a main shaft sleeve (20) is arranged on an installation plate (21), a main shaft (8) is arranged in the main shaft sleeve (20), a shaft check ring (19) is arranged between the main shaft sleeve (20) and the installation plate (21) to prevent the vibration, the upper end (8-1) of the main shaft (8) is in a flat head shape and is embedded into a kidney-shaped hole of an input shaft (18-1) of a multi-circle magnetic absolute encoder (18), the lower end of the upper end is connected with the main shaft gear (7) through an inner hexagonal cone end set screw (9), and the main shaft gear (7) is in meshing transmission with the feedback shaft gear (5); an isolation column I (14) is arranged on a mounting plate (21) on one side of a main shaft (8) in parallel with the main shaft (8) through a hexagon socket head cap screw (15), a main shaft gear sleeve fixing plate (12) is fixed at the bottom end of the isolation column I (14) through a nut (13), a main shaft gear sleeve (10) is arranged between the main shaft gear sleeve fixing plate (12) and a main shaft gear (7), a shaft check ring (11) for preventing the main shaft gear sleeve (10) from moving in a crossing mode is arranged on the main shaft gear sleeve (10), a multi-turn magnetic absolute encoder (18) is connected to the mounting plate (21) through an isolation column II (17), and a signal line (22) connected with an upper computer is arranged on the multi-turn magnetic.
2. The valve position feedback device for an electric actuator according to claim 1, wherein: the multi-circle magnetic absolute encoder (18) transmits the acquired valve position signal to the electric actuating mechanism control device through a signal line (22).
3. The valve position feedback device for an electric actuator according to claim 1, wherein: the transmission ratio of the feedback shaft gear (5) to the main shaft gear (7) is 1: 1.
4. The valve position feedback device for an electric actuator according to claim 1, wherein: the valve position feedback device (2) is fixed on the electric actuating mechanism shell (1) through three hexagon socket head cap screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921338261.9U CN210440663U (en) | 2019-08-16 | 2019-08-16 | Valve position feedback device for electric actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921338261.9U CN210440663U (en) | 2019-08-16 | 2019-08-16 | Valve position feedback device for electric actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210440663U true CN210440663U (en) | 2020-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921338261.9U Active CN210440663U (en) | 2019-08-16 | 2019-08-16 | Valve position feedback device for electric actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210440663U (en) |
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2019
- 2019-08-16 CN CN201921338261.9U patent/CN210440663U/en active Active
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