Opening and closing adjusting dual-purpose electric valve actuator

Abstract

The utility model relates to an on-off adjusting dual-purpose electric valve actuator which comprises an actuator body, a shell is arranged outside the actuator body, an output shaft is arranged in the actuator body, one end of the output shaft extends out of the shell, and a first connecting portion is arranged on the output shaft. A rotating shaft of the encoder is provided with a second connecting part, and the second connecting part is detachably connected with the first connecting part; a wire harness of the encoder is electrically connected with the PCB of the actuator body. The valve driver is provided with the matched encoder easy to disassemble and assemble, whether to transmit and control the opening angle of the valve or not can be selected, the valve driver body and the encoder are arranged in a detachable mode, selective installation is achieved according to on-site working conditions and valve fault detection, and the encoder is provided with an independent wiring end which can be connected into a wiring port of an actuator PCB at any time and can also be connected with the wiring port of the actuator PCB at any time. The system can be jointly accessed to an electric control system and can also be independently accessed to a serial port server and the like to facilitate on-site maintenance and debugging, and the whole set of equipment can effectively reduce the cost and can adapt to various working conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, and more particularly to a switch-regulating dual-purpose electric valve actuator. Background Art

[0002] Electric valve actuators play a crucial role in industrial automation and fluid control systems. They are used to control the opening and closing of valves, thereby regulating the flow of fluids. Conventional on-off electric valve actuators in the prior art have the following main drawbacks:

[0003] Functional limitations: Existing common on-off electric valve actuators typically have only two basic states—fully open and fully closed. This binary control method limits the ability to precisely control flow and makes fine-tuning impossible.

[0004] Lack of feedback mechanism: These actuators typically do not have feedback capabilities, meaning they cannot provide information about the valve’s current position. This means users cannot remotely monitor or confirm the valve’s actual opening, reducing system transparency and monitorability.

[0005] Difficulty in fault detection: Due to the lack of real-time monitoring of valve opening, problems such as valves not fully closing or opening, or valves getting stuck in the middle position due to a fault, may not be immediately apparent. This can lead to reduced system efficiency and even potential safety risks.

[0006] Cost and performance mismatch: For some applications, high-precision control capabilities are not required, so using a more expensive modulating valve actuator (with fine control and feedback functions) may be a waste of resources.

[0007] Inconvenient maintenance and upgrades: If additional monitoring and control functions are required, the existing switch-type actuator may need to be replaced with a more advanced modulating actuator, which not only increases costs but may also require downtime and maintenance, affecting production efficiency.

[0008] Therefore, how to provide a dual-purpose electric valve actuator for switching and regulating is a problem that those skilled in the art urgently need to solve. Utility Model Content

[0009] Therefore, the purpose of the present invention is to provide an electric valve actuator for both switching and regulating, so as to solve the problems existing in the existing valve actuators.

[0010] The technical solution of the utility model is a dual-purpose electric valve actuator for switching and regulating, comprising:

[0011] An actuator body, wherein the actuator body has a housing outside and an output shaft inside, wherein one end of the output shaft extends out of the housing and has a first connecting portion thereon;

[0012] An encoder has a second connecting portion on its rotating shaft, and the second connecting portion is detachably connected to the first connecting portion; a wiring harness of the encoder is electrically connected to the PCB board of the actuator body.

[0013] According to the technical solution of the present utility model, a reserved hole is provided on the housing, and the bracket of the encoder is detachably connected to the reserved hole via a connecting piece.

[0014] According to the technical solution of the present invention, the first connecting portion is a keyway provided at one end portion of the output shaft.

[0015] According to the technical solution of the present invention, the second connecting portion is a convex key structure on the rotating shaft that is adapted to the keyway.

[0016] According to the technical solution of the present utility model, a limiting block is provided on the rotating shaft.

[0017] In the technical solution of the present utility model, the connecting piece is a latch structure.

[0018] According to the technical solution of the present utility model, the encoder is provided with an indicator disk.

[0019] According to the technical solution of the present utility model, the wiring harness is an RS485 communication line.

[0020] It can be seen from the above technical solution that compared with the prior art, the utility model discloses a dual-purpose electric valve actuator for switching and adjustment, which has an easily detachable matching encoder, and can choose whether to transmit and control the valve opening angle. The valve driver body and the encoder are set to be detachable. In other words, the two are independent and can be selectively installed according to the on-site working conditions and valve fault detection. The installation is convenient, fast and reliable. The encoder has an independent wiring terminal, which means that the wiring is simple and there are few fault points. It can be connected to the wiring port of the actuator PCB board at any time and connected to the electronic control system together, or it can be independently connected to a serial port server, etc. for easy on-site maintenance and debugging. The whole set of equipment can effectively reduce costs and can adapt to various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of a switch-regulating dual-purpose electric valve actuator provided by the utility model;

[0023] Figure 2 is the primary visual intent of the encoder;

[0024] Figure 3 This is a bottom view of the encoder;

[0025] Figure 4 The keyway structure on the output shaft is shown schematically. DETAILED DESCRIPTION

[0026] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] Since ordinary switch-type electric valve actuators have only two states, open and closed, it is impossible to know the specific opening of the valve. If a fault such as abnormal opening occurs, it is not easy to know. The cost of regulating valve actuators that meet this function is high and is not necessary under certain working conditions. In view of this, the utility model provides a switch-regulating dual-purpose electric valve actuator, see the attached Figure 1-4 , including: an actuator body, the actuator body has a shell (not shown in the figure) on the outside, an output shaft 1 is provided therein, one end of the output shaft 1 extends out of the shell, and has a first connecting portion on it; an encoder 2, the encoder 2 has a second connecting portion on its rotating shaft 22, and the second connecting portion is detachably connected to the first connecting portion; the wiring harness 3 of the encoder 2 is electrically connected to the PCB board of the actuator body.

[0028] The above technical solution has an easily detachable matching encoder, which can choose whether to transmit and control the valve opening angle. The valve driver body and the encoder are set to be detachably connected. In other words, the two are independent and can be selectively installed according to the on-site working conditions and valve fault detection. The installation is convenient, fast and reliable. The encoder has an independent wiring terminal, which means that the wiring is simple and there are few fault points. It can be connected to the wiring port of the actuator PCB board at any time and connected to the electronic control system together, or it can be independently connected to the serial port server for on-site maintenance and debugging. The whole set of equipment can effectively reduce costs and can adapt to various working conditions.

[0029] Advantageously, the housing has a reserved hole, and the bracket 4 of the encoder 2 is detachably connected to the reserved hole via a connector, thereby making the encoder and the actuator body more reliably mounted.

[0030] In an embodiment of the present invention, optionally, the first connection portion is a keyway 11 provided at one end of the output shaft 1. The second connection portion is a convex key structure 23 provided on the rotating shaft 22 and adapted to the keyway.

[0031] In other embodiments, a threaded connection and a screw hole can be used, and the threaded connection can be a normal thread or a fine thread, which can be selected according to the required connection strength and accuracy. A coupling can also be used for connection.

[0032] In an embodiment of the present invention, a limit block 24 is provided on the rotating shaft 22. The limit block 24 is fixed to the rotating shaft 22 by screws, snap rings, welding or other fixing methods to control and limit the range of motion of the rotating shaft.

[0033] In the embodiment of the present invention, the connecting member is a latch structure 41, which facilitates installation and disassembly.

[0034] In the above embodiments, the encoder 2 has an indicator disk 21 .

[0035] In the above embodiments, the wiring harness 3 is an RS485 communication line, which may have four terminals, one pair of which is the positive and negative poles of the power supply, and the other pair is the signal line A and the signal line B.

[0036] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0037] The output shaft of this electric actuator features a keyway, while the rotary encoder's shaft is keyed, allowing for easy mating. A limit block at the upper end of the encoder's shaft limits its rotation angle, ensuring alignment with the valve's opening and closing angles. The key and keyway provide absolute positioning of the encoder and the actuator. A simple latch is designed at the end of the encoder's bracket for convenient insertion and removal into a pre-set socket on the actuator's surface.

[0038] The valve actuator of the present invention may be a worm gear valve actuator, which utilizes a valve driving device driven by a worm gear and a worm gear, and drives the worm gear by rotating the worm gear, thereby realizing the opening and closing operations of the valve.

[0039] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0040] It can be understood that the present invention is a split design, where the encoder and electric actuator can be divided into two parts, which are fixedly connected by the encoder shaft key and the encoder bracket pin, with the advantages of convenience, speed, and good stability. If the encoder is not installed, the electric actuator can be used as an ordinary switch-type valve; if the valve opening needs to be monitored and controlled, the encoder can be directly installed in place, and the encoder wiring harness can be directly connected to the reserved terminal on the actuator PCB board. At this time, the actuator becomes a regulating actuator with angle monitoring and control functions. The encoder measures the angle synchronously with the rotation of the valve shaft, provides real-time feedback, transmits accurate data, has small errors, is simple to operate, and has power-off memory and absolute value memory functions. The overall disassembly and assembly process is very convenient. Based on the modification of the ordinary switch-type actuator, the cost of the entire actuator set is significantly reduced compared to the intelligent type, and it can flexibly respond to various working conditions.

[0041] The encoder of the utility model is installed vertically and coaxially with the valve shaft, and is convenient to assemble and disassemble.

[0042] The encoder is installed with a quick-insert encoder bracket based on the original hole position of the actuator housing, which can be quickly fixed without the need to drill additional holes in the actuator.

[0043] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0044] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A dual-purpose electric valve actuator for switching and regulating, characterized in that: include: An actuator body, wherein the actuator body has a shell on the outside, and an output shaft (1) is provided inside the shell, and one end of the output shaft (1) extends out of the shell and has a first connecting portion thereon; An encoder (2), wherein a second connecting portion is provided on a rotating shaft of the encoder (2), and the second connecting portion is detachably connected to the first connecting portion; and a wiring harness (3) of the encoder (2) is electrically connected to a PCB board of the actuator body.

2. The switch-regulating dual-purpose electric valve actuator according to claim 1, characterized in that: The housing is provided with a reserved hole, and the bracket (4) of the encoder (2) is detachably connected to the reserved hole via a connecting piece.

3. The switch-regulating dual-purpose electric valve actuator according to claim 1, characterized in that: The first connecting portion is a keyway provided at one end of the output shaft (1).

4. The switch-regulating dual-purpose electric valve actuator according to claim 3, characterized in that: The second connecting portion is a convex key structure on the rotating shaft that is adapted to the keyway.

5. The switch-regulating dual-purpose electric valve actuator according to claim 1, characterized in that: A limit block is provided on the rotating shaft.

6. The switch-regulating dual-purpose electric valve actuator according to claim 2, characterized in that: The connecting piece is a latch structure.

7. The switch-regulating dual-purpose electric valve actuator according to claim 2, characterized in that: The encoder (2) is provided with an indicator disk (21).

8. The switch-regulating dual-purpose electric valve actuator according to any one of claims 1 to 7, characterized in that: The wiring harness (3) is an RS485 communication line.

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