A high-precision butterfly valve control module

Abstract

The utility model discloses a high accuracy butterfly valve control module, include: cover tooth seat, motor, wave generator and soft cylinder cover, and the soft cylinder cover is connected in the inside of cover tooth seat, and the surface is equipped with the external tooth, the external tooth is engaged with the ring tooth of inside of cover tooth seat, wave generator is located in the inside of soft cylinder cover, has two wave wheels of symmetrical arrangement, is used for carrying out periodic extrusion deformation to soft cylinder cover, and motor is coaxial and is arranged in the inside of wave generator, and its output is connected through transmission gear group and the transmission tooth cover on wave generator and is engaged, realizes drive transmission, and the outside of wave generator still has the shaft ring, and is rotatably installed in transmission seat, and transmission seat is fixed on cover tooth seat through screw. The flange plate is equipped with for being connected with butterfly valve axle in the end of soft cylinder cover. This module compact structure, the degree of integration is high, realizes the high accuracy control of butterfly valve opening and closing angle through harmonic drive, is applicable to the precise fluid regulation occasion.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve drive structure technology, specifically a high-precision butterfly valve control module. Background Technology

[0002] Butterfly valves, as a common fluid control element, are widely used in automated control systems for water supply and drainage, petrochemicals, HVAC, and environmental protection. To achieve accurate control of the opening and closing angle of the butterfly valve, a combination of a motor and a reduction gear mechanism is typically incorporated into its drive system to form an electric actuator module. Currently, commonly used electric control devices for butterfly valves on the market mainly employ the following technical approaches:

[0003] One type of structure combines a motor with a traditional planetary gear reducer. This approach uses gear pairs to progressively reduce speed, outputting torque to drive the butterfly valve. Although this type of structure has a certain transmission efficiency, it suffers from problems such as large size, difficult assembly, and inconvenient maintenance due to the large number of parts and complex structure. Its performance is particularly unsatisfactory in industrial applications where space is limited.

[0004] Another approach uses a stepper motor or servo motor to directly drive the butterfly valve shaft, achieving precise opening and closing through closed-loop position control. However, in the absence of a high-precision reduction mechanism, the output torque is insufficient, limiting system stability and control accuracy. This is especially problematic in applications requiring high-precision control of the opening and closing angles, where low control resolution and sluggish response are issues.

[0005] Therefore, there is an urgent need to propose a new type of butterfly valve drive control module that is compact, highly integrated, and capable of high-precision opening and closing control, in order to overcome the above-mentioned problems existing in the prior art. Utility Model Content

[0006] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0007] Therefore, the technical solution adopted by this utility model is as follows: a high-precision butterfly valve control module, including: a toothed seat, a motor, a wave generator, and a flexible cylinder sleeve, wherein the flexible cylinder sleeve is sleeved inside the toothed seat, the wave generator is located inside the flexible cylinder sleeve, and the motor is coaxially arranged inside the wave generator. The whole is a nested integrated structure, which is suitable for butterfly valve driving applications.

[0008] In a preferred example, the surface of the flexible cylinder liner is provided with external teeth for meshing, and the inner wall of the sleeve tooth seat is correspondingly provided with ring teeth. When the wave generator rotates and drives the flexible cylinder liner to undergo periodic deformation, the external teeth of the flexible cylinder liner mesh with the inner ring teeth of the sleeve tooth seat, thereby realizing the rotational output of the flexible cylinder liner.

[0009] Specifically, this structure achieves a high reduction ratio transmission through flexible deformation, outputting high-precision angular displacement without increasing the structural volume, making it suitable for high-response adjustment applications.

[0010] In a preferred example, one end of the motor is connected to the transmission gear sleeve on the wave generator via a transmission gear set, which is used to transmit the output torque of the motor to the main body of the wave generator to realize the rotation drive of the impeller.

[0011] Specifically, the power is effectively converted from the high-speed end of the motor to the impeller drive end through gear transmission, ensuring stable torque output of the system and improving the reliability of the wave generator.

[0012] In a preferred example, two impellers are symmetrically arranged on the outer surface of the wave generator about the central axis. These impellers are bearing structures used for sliding contact with the inner wall of the flexible cylinder liner. When the wave generator rotates, the two impellers alternately compress the flexible cylinder liner, driving its outer wall to produce a wave-like deformation output.

[0013] Specifically, this design effectively enhances the deformation efficiency and output stability of the flexible cylinder liner, enabling the external teeth to smoothly mesh with the internal teeth of the sleeve gear seat, reducing mechanical clearance and improving opening and closing accuracy.

[0014] In a preferred example, the flexible cylinder liner is made of a flexible material and has a flange structure at one end, which can be connected to the butterfly valve shaft to realize the direct drive output of the butterfly valve.

[0015] Specifically, the flange structure facilitates standardized connection, improves system adaptability, and the flexible material absorbs some of the driving impact, improving the stability and service life of the butterfly valve during opening and closing.

[0016] In a preferred example, the motor is a servo motor with its shaft coaxially connected to the transmission gear set, enabling precise control of the butterfly valve's opening and closing angle.

[0017] Specifically, the servo motor has position feedback control capability, and combined with the harmonic deceleration mechanism, it can achieve precise angle control, meeting the system requirements for high adjustment accuracy.

[0018] In a preferred example, the transmission gear set adopts a planetary gear structure, with the central gear driven by the motor output shaft and multiple pinions meshing with the transmission gear sleeve to form a high transmission ratio scheme.

[0019] Specifically, the structure is compact, has stable output, and can withstand large load impacts, further improving system reliability.

[0020] In a preferred example, a collar is fitted onto the outer side of the wave generator, and the collar is rotatably mounted on the inner wall of the transmission seat to support the concentric stability of the wave generator during rotation.

[0021] Specifically, this structure enhances the rotational accuracy of the wave generator, reduces axial deviation during operation, and improves transmission consistency.

[0022] In a preferred example, the transmission seat is detachably mounted to one end of the gear seat by screws, which facilitates the overall assembly of the module and subsequent maintenance and replacement.

[0023] Specifically, it enables standardized and modular deployment of control modules, improving assembly efficiency and reducing maintenance costs.

[0024] In summary, this utility model integrates a servo motor, a wave generator, and a flexible cylinder liner structure to create a high-precision butterfly valve control module that is compact, highly accurate, and easy to install. It is particularly suitable for industrial automation fluid control systems that require precise control and rapid response.

[0025] The beneficial effects achieved by this utility model are as follows:

[0026] 1. This utility model highly integrates the motor, wave generator, and harmonic reduction gear assembly into a single module, resulting in a compact overall structure and small footprint. This significantly simplifies the installation complexity caused by the separate arrangement of multiple components in traditional butterfly valve control devices. Furthermore, the screw connection between the transmission seat and the gear seat enables rapid assembly and disassembly, improving the convenience of equipment maintenance and replacement. It possesses excellent modular installation characteristics and is suitable for batch deployment in industrial automation environments.

[0027] 2. This invention incorporates the principle of harmonic drive, using the periodic deformation of the flexible cylinder liner driven by the dual impellers in the wave generator to achieve output characteristics of high reduction ratio, low hysteresis, and high control precision. Combined with the precise speed regulation capability of the servo motor, it enables continuous and controllable adjustment of the butterfly valve's opening and closing angle, effectively improving the dynamic response performance and control precision of the fluid control system. It is particularly suitable for scenarios requiring finely adjustable valve opening and sensitive response, such as gas transportation, liquid metering, and environmental regulation systems. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0029] Figure 2 This is a schematic diagram of a motor mounting structure according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of a motor and a wave generator according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the toothed seat, wave generator, and flexible cylinder liner structure according to one embodiment of the present invention.

[0032] Figure label:

[0033] 100, Gear holder; 110, Transmission seat; 200, Motor; 210, Bearing ring; 220, Transmission gear set; 300, Wave generator; 310, Transmission gear sleeve; 320, Impeller; 400, Flexible cylinder liner; 410, External gear. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0035] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0036] The following describes, with reference to the accompanying drawings, some embodiments of a high-precision butterfly valve control module provided by this utility model.

[0037] Combination Figures 1-4 As shown, this utility model provides a high-precision butterfly valve control module, including a gear seat 100, a motor 200, a wave generator 300, and a flexible cylinder liner 400. The flexible cylinder liner 400 is a flexible material component that can achieve elastic deformation under external force. Its outer surface is provided with external teeth 410, which are arranged along the circumference of the flexible cylinder liner 400 and are used to mesh with the ring teeth arranged on the inner side of the gear seat 100, thereby realizing rotational output.

[0038] The flexible cylinder liner 400 is installed inside the sleeve gear seat 100 in a sleeve-type structure. The wave generator 300 is installed inside the flexible cylinder liner 400. The wave generator 300 includes a transmission gear sleeve 310 and two impellers 320, which are symmetrically arranged along the outer surface axis of the wave generator 300 and are used to drive the flexible cylinder liner 400 to perform periodic contact deformation. The transmission gear sleeve 310 is located at one end of the wave generator 300 and is used to mesh with the motor output transmission structure.

[0039] The motor 200 is rotatably sleeved within the inner cavity of the wave generator 300 and is coaxially arranged with the wave generator 300. A bearing ring 210 is provided on the surface of the motor 200, and the bearing ring 210 forms a sliding contact with the inner wall of the transmission gear sleeve 310 to improve transmission smoothness and coaxial support capability. The output end of the motor 200 is meshed with a transmission gear set 220 disposed inside the transmission base 110. The transmission gear set 220 meshes with the transmission gear sleeve 310, thereby transmitting the output torque of the motor 200 to the wave generator 300 to realize the driving function.

[0040] A transmission seat 110 is fixedly installed at one end of the gear sleeve 100. The transmission seat 110 is connected to the gear sleeve 100 by screws and has a detachable structure, which facilitates installation and subsequent maintenance. The motor 200 is installed inside the transmission seat 110, forming an integrated modular structure that improves assembly efficiency.

[0041] Furthermore, such as Figure 3 As shown, the impeller 320 is a bearing structure, located on the outer surface of the wave generator 300, and can slide in contact with the inner wall of the flexible cylinder liner 400. During the rotation of the wave generator 300 driven by the motor 200, the two impellers 320 simultaneously undergo periodic sliding and pressing action with the inner wall of the flexible cylinder liner 400, driving the flexible cylinder liner 400 to produce flexible deformation, thereby causing the outer teeth 410 on its outer surface to mesh with the ring teeth on the inner side of the sleeve tooth seat 100, and realizing the rotational output of the flexible cylinder liner 400.

[0042] like Figure 4 As shown, one end of the flexible cylinder liner 400 is equipped with a flange structure for connecting the butterfly valve shaft, allowing the rotary output to directly act on the butterfly valve to achieve opening and closing control. This structure achieves high reduction ratio and high-precision position control by driving the flexible cylinder liner 400 through the impeller 320.

[0043] like Figure 2 As shown, a collar is sleeved on the outer side of the wave generator 300. This collar is rotatably sleeved on the inner side of the transmission seat 110 to stabilize the rotation axis of the wave generator 300 and improve the reliability of the system operation.

[0044] More preferably, the motor 200 is a servo motor, which has high-speed response and precise positioning functions. When combined with the transmission structure of the wave generator 300, it can achieve precise control of the opening angle of the butterfly valve, meeting the fluid regulation requirements in high-precision scenarios.

[0045] More preferably, the transmission gear set 220 can adopt a planetary gear structure, including a central input gear and multiple pinions arranged circumferentially thereon. The pinions mesh with the gear ring of the transmission gear sleeve 310 at the same time, so as to achieve a higher transmission ratio and torque output capability in a limited space, and improve the overall transmission efficiency and output stability.

[0046] In summary, this utility model integrates the servo motor, motor output gear assembly, wave generator, flexible cylinder liner, and butterfly valve output interface into a single unit, achieving a compact and efficient butterfly valve control module solution. It boasts significant advantages such as high structural integration, high control precision, fast response, and ease of maintenance.

[0047] Working principle and usage process of this utility model:

[0048] This invention employs a linkage between a wave generator and a flexible cylinder liner. Through the contact and engagement between the impeller and the flexible cylinder liner, and the meshing of the external teeth with the inner ring teeth of the sleeve seat, it drives the butterfly valve shaft to achieve high-precision rotation control. The overall structure forms a flexible deformable transmission reduction drive system. Its working principle can be broken down into the following steps:

[0049] A servo motor serves as the power source, driving the transmission gear set 220 to rotate via the central output shaft. The transmission gear set 220 meshes with the transmission gear sleeve 310 on the wave generator, transmitting rotational force to the wave generator through gear transmission.

[0050] During rotation, the wave generator 300 continuously presses the inner wall of the flexible cylinder liner 400 with its two symmetrically arranged impellers 320, producing periodic deformation in its shape (similar to an elliptical trajectory). The external teeth 410 on the flexible cylinder liner 400 form a limited mesh with the ring teeth on the inner side of the sleeve tooth seat 100. Under the extrusion deformation of the impellers, the flexible cylinder liner is driven to rotate gradually, achieving a high reduction ratio output. The end of the flexible cylinder liner 400 is equipped with a flange, which can be connected to the valve shaft of the butterfly valve, thereby achieving fine adjustment of the butterfly valve opening by precisely controlling the motor speed and angle.

[0051] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-precision butterfly valve control module, characterized in that, include: The device comprises a gear holder (100), a motor (200), a wave generator (300), and a flexible cylinder sleeve (400) rotatably fitted inside the gear holder (100). The flexible cylinder sleeve (400) has external teeth (410) on its surface, and the gear holder (100) has ring teeth on its inner side for meshing with the external teeth (410). A transmission seat (110) is fixedly installed on one side of the gear holder (100). The motor (200) is rotatably fitted inside the wave generator (300), and the wave generator (300) rotates... The wave generator (300) is fitted onto the inner side of the flexible cylinder liner (400) and has two impellers (320) arranged symmetrically about the origin of the axis on its surface. The two impellers (320) slide against the inner side of the flexible cylinder liner (400). One end of the wave generator (300) is provided with a transmission gear sleeve (310). The transmission seat (110) is rotatably mounted with a transmission gear set (220). The output end of the motor (200) is driven by meshing with the surface of the transmission gear sleeve (310) through the transmission gear set (220).

2. The high-precision butterfly valve control module according to claim 1, characterized in that, The motor (200) is arranged coaxially with the wave generator (300), and a bearing ring (210) is rotatably sleeved on the surface of the motor (200). The bearing ring (210) slides against the inner side of the transmission gear sleeve (310).

3. The high-precision butterfly valve control module according to claim 1, characterized in that, The impeller (320) is a bearing structure and slides against the inner wall of the flexible cylinder sleeve (400) to drive the external teeth (410) to mesh with the inner ring teeth of the sleeve seat (100).

4. The high-precision butterfly valve control module according to claim 1, characterized in that, The flexible cylinder liner (400) is a flexible material component, and the end of the flexible cylinder liner (400) is provided with a flange for connecting with the butterfly valve shaft.

5. A high-precision butterfly valve control module according to claim 1, characterized in that, The wave generator (300) has a collar sleeved on its outer side, and the collar is rotatably sleeved on the inner side of the transmission seat (110).

6. The high-precision butterfly valve control module according to claim 1, characterized in that, The motor (200) is a servo motor, which can achieve precise speed control of the wave generator (300) to improve the control accuracy of the opening and closing angle of the butterfly valve.

7. The high-precision butterfly valve control module according to claim 1, characterized in that, The transmission seat (110) is detachably fixed to one end face of the gear seat (100) by screws, which facilitates modular installation and maintenance.

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