Novel modularized rotary cutting valve

Abstract

The invention relates to the technical field of rotary-cut valves, in particular to a novel modular rotary-cut valve which comprises a valve head assembly and a valve body assembly and further comprises a positioning assembly and a driving assembly, the valve head assembly is arranged on the valve body assembly, the positioning assembly is arranged in the valve body assembly, and the driving assembly is arranged on the outer side of the valve body assembly. The valve head assembly, the valve body assembly, the positioning assembly and the driving assembly are all modular detachable assemblies, a dish-shaped gasket is arranged in the valve head assembly so as to guarantee the sealing effect of the valve head assembly, an eccentric kidney-shaped hole is formed in a coupling column of the positioning assembly, and the uniqueness of the assembling mode matched with the valve head assembly and the positioning assembly is guaranteed. A modularized framework is adopted as a whole, the valve head assembly, the valve body assembly, the positioning assembly and the driving assembly are designed into mutually independent detachable modules, all the assemblies can be independently manufactured, replaced and maintained, the limitation caused by traditional integrated design is broken through, the customization capacity of products is improved, the production process is simplified, and the production efficiency is improved. And the production and use cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of rotary cutting valve technology, specifically a novel modular rotary cutting valve. Background Technology

[0002] Traditional rotary valves typically employ a one-piece design, which results in a lack of flexibility during production. Because the functional components are interconnected, manufacturers struggle to quickly customize or adjust them to meet different application needs, leading to a relatively cumbersome and inefficient production process. When the valve malfunctions or requires maintenance, the integrated structure often necessitates complete disassembly, increasing maintenance complexity and time costs, and ultimately raising maintenance expenses during operation.

[0003] In terms of performance, existing rotary valves have significant limitations in pressure resistance, typically failing to exceed 40 MPa. This limitation makes them unsuitable for applications requiring the handling of high-pressure fluids, such as certain life science instruments or high-pressure water treatment systems. The insufficient pressure resistance stems primarily from limitations in material selection and sealing structure design, affecting the valve's reliability and service life under high-pressure environments.

[0004] Furthermore, the electrical connections within traditional rotary valves typically rely on complex wiring. Sensors, motors, and other components need to be connected to the control system via wires. This connection method not only increases the complexity of the internal structure but also introduces potential points of failure. Wiring connections are prone to loosening, wear, and even breakage, affecting the long-term stable operation of the equipment. At the same time, the complex wiring makes the assembly process time-consuming and labor-intensive, and causes inconvenience during subsequent maintenance or component replacement.

[0005] Communication protocol compatibility is also a common problem. Many existing rotary valves only support a single or limited number of communication interfaces, making it difficult to adapt to diverse industrial control systems and automation equipment. This lack of compatibility limits the valve's application range in different systems and increases the difficulty of system integration. Users often need additional adapters or conversion modules, increasing system cost and complexity.

[0006] The positioning accuracy and assembly consistency of the valve core are also challenges faced by traditional designs. Without effective error-proofing mechanisms, deviations may occur during assembly, affecting the accuracy and repeatability of valve operation. This uncertainty is particularly detrimental in applications requiring precise flow control. Furthermore, there is a lack of simple and reliable solutions for calibrating and maintaining the valve core position over the long term, which may affect control precision.

[0007] Therefore, we propose a novel modular rotary valve. Summary of the Invention

[0008] One of the technical problems this application aims to solve is that traditional rotary valves, with their integrated sealing scheme and positioning drive mechanism, increase design time, are cumbersome to produce, have high costs, are inconvenient to maintain, and cannot meet customers' customized needs; existing rotary valves have low pressure resistance, which does not meet the needs of instrument manufacturers to speed up production; existing rotary valves still have wiring, resulting in many failure points and making production control difficult.

[0009] To solve the above technical problems, this application provides a novel modular rotary valve, including a valve head assembly, a valve body assembly, a positioning assembly, and a drive assembly. The valve head assembly is disposed on the valve body assembly, the positioning assembly is disposed inside the valve body assembly, and the drive assembly is disposed outside the valve body assembly. The valve head assembly, valve body assembly, positioning assembly, and drive assembly are all modular and detachable components. The valve head assembly is equipped with a disc-shaped gasket to ensure the sealing effect of the valve head assembly, and the coupling column of the positioning assembly is equipped with an eccentric waist hole to ensure the uniqueness of the assembly method of the valve head assembly and the positioning assembly.

[0010] In some embodiments, the valve head assembly includes a stator, a threaded hole and bolts disposed on the stator, a valve head seat disposed below the stator, and a rotor disposed inside the valve head seat and located below the stator. The surface of the stator is coated with a diamond-like carbon coating, and the rotor is made of a modified polymer material.

[0011] In some embodiments, a valve core drive component is provided below the rotor, a rotor seat is provided on the outer side of the top of the valve core drive component, a disc-shaped gasket is provided on the inner side of the rotor seat, a bearing is provided below the disc-shaped gasket, and a positioning pad is provided below the bearing.

[0012] In some embodiments, the valve core transmission component body passes through a disc-shaped gasket, a bearing, and a positioning gasket, and the threaded holes are arranged in a circular array on the top of the stator, with a bolt located outside the threaded holes.

[0013] In some embodiments, the valve body assembly includes a valve body, an mounting and positioning hole for an optocoupler sensor is provided on the outer side of the valve body, a main through hole is provided on the top of the valve body to allow the valve core drive component to pass through the main through hole, and a connection hole is also provided on the top of the valve body to facilitate the connection between the valve head assembly and the valve body assembly.

[0014] In some embodiments, a stepper motor is provided below the valve body, a second connection hole is provided at the bottom of the valve body, a second bolt is provided in the second connection hole, the stepper motor is provided with a motor shaft, the motor shaft is located inside the valve body, the motor shaft is located below the main through hole, and the valve body is connected to the stepper motor by the second bolt.

[0015] In some embodiments, the positioning component includes a coupling column and a code disk, the coupling column and the code disk being fixed together by welding, and an eccentric waist hole being provided on the top of the coupling column to ensure the uniqueness of the connection method between the eccentric waist hole and the valve core transmission component.

[0016] In some embodiments, the coupling column is a cylindrical structure, the motor shaft passes through the bottom of the coupling column, the code disk is a semi-circular plate, and the code disk is provided with notches and pin holes. The pin holes provide precise positioning for welding, and the code disk has different forms depending on the number of notches.

[0017] In some embodiments, the drive component includes a PCB board that supports multiple communication protocols such as serial port (RS232 / RS485), high and low level, and IIC. The PCB board is connected to the valve body component by three bolts.

[0018] In some embodiments, a connection port is provided on the PCB board, and a pin is provided in the connection port. The sensor and the motor are connected through the pin.

[0019] This invention has at least the following beneficial effects: 1. The overall design adopts a modular architecture, with the valve head assembly, valve body assembly, positioning assembly, and drive assembly designed as independent, detachable modules. This design significantly changes the traditional structure of rotary valves. Each component can be manufactured, replaced, and maintained individually, breaking the limitations of traditional integrated designs. This enhances product customization capabilities, simplifies the production process, and effectively reduces production and operating costs. While achieving modularity, this rotary valve achieves a high pressure resistance of no less than 70MPa within a compact structural space. This is thanks to the diamond-like carbon coating on the stator surface, which enhances surface hardness and wear resistance. The rotor uses modified polymer materials such as polyetheretherketone (PEEK) or polyimide-based materials, providing excellent self-lubrication and chemical stability. Combined with the sealing structure formed by disc gaskets, these factors work together to improve the valve's sealing reliability and service life under high-pressure conditions, breaking through the pressure resistance bottleneck of the traditional rotary valve, which is generally limited to 40MPa.

[0020] 2. The drive assembly utilizes a pin-type quick-connect interface on the printed circuit board. Sensors and motors connect directly to the drive board via these pins, completely replacing the traditional complex internal wiring structure. This method eliminates potential fault points such as loosening and wear common in wire connections, making the overall assembly process more convenient. It also significantly simplifies disassembly and reconnection steps in subsequent maintenance, improving the ease of maintenance and long-term operational stability of the equipment. A key structure in the positioning assembly is the eccentric waist hole on the coupling column. This specific shape design ensures that the valve core transmission component and the coupling column can only be connected in one unique and correct manner, effectively avoiding misalignment or angular deviation problems that may occur during assembly. Combined with an adjustable encoder, precise calibration and positioning of the valve core position can be achieved, ensuring the accuracy and repeatability of valve action, which is particularly important for applications requiring precise flow control.

[0021] 3. The drive module is designed to support multiple mainstream communication protocols, including serial communication standards such as RS232 and RS485, high and low level signal interfaces, and the IIC integrated circuit bus. This compatibility with multiple communication methods greatly enhances the adaptability of the rotary valve and the control system, enabling it to be easily integrated into different types and architectures of automated equipment and fluid control systems, thus broadening its application range. In summary, the rotary valve's modular design, high-pressure-resistant structure, cableless connection, error-proof positioning, and multi-protocol support collectively improve the product's overall performance and reliability. These improvements make it more suitable for applications with high requirements for pressure resistance, control accuracy, ease of maintenance, and system integration, such as life science instruments, medical device manufacturing, and various high-pressure water treatment systems. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the valve head assembly structure of the present invention; Figure 3 This is a top view of the valve head assembly of the present invention; Figure 4 for Figure 3 Sectional view of AA in the middle; Figure 5 This is a schematic diagram of the valve body assembly structure of the present invention; Figure 6 This is a top view of the valve body assembly of the present invention; Figure 7 for Figure 6 Cross-sectional view of the middle section (BB); Figure 8 This is a schematic diagram of the positioning component structure of the present invention; Figure 9 This is a top view of the positioning component of the present invention; Figure 10 This is a schematic diagram of the drive component structure of the present invention; Figure 11 This is a schematic diagram of the encoder of the present invention. Figure 1 ; Figure 12 This is a schematic diagram of the encoder of the present invention. Figure 2 ; Figure 13 This is a schematic diagram of the encoder of the present invention. Figure 3 .

[0023] In the diagram, 100-valve head assembly; 101-stator; 1011-threaded hole; 1012-bolt one; 102-valve head seat; 103-rotor; 104-rotor seat; 105-disc gasket; 106-bearing; 107-positioning pad; 108-valve core transmission component; 200-valve body assembly; 201-valve body; 202-stepper motor; 203-optical coupler sensor; 204-main through hole; 205-connection hole one; 206-motor shaft; 207-bolt two; 208-connection hole two; 300-positioning assembly; 301-coupling column; 302-code disk; 3021-notch; 3022-pin hole; 303-eccentric waist hole; 400-drive assembly; 401-PCB board; 402-bolt three; 403-connection port; 404-pin. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1, see Figure 1-13 The present invention provides a technical solution: a novel modular rotary valve, including a valve head assembly 100, a valve body assembly 200, a positioning assembly 300, and a drive assembly 400. The valve head assembly 100 is disposed on the valve body assembly 200, the positioning assembly 300 is disposed inside the valve body assembly 200, and the drive assembly 400 is disposed outside the valve body assembly 200. The valve head assembly 100, the valve body assembly 200, the positioning assembly 300, and the drive assembly 400 are all modular and detachable components. A disc-shaped gasket 105 is provided inside the valve head assembly 100 to ensure the sealing effect of the valve head assembly 100. The coupling column 301 of the positioning assembly 300 is provided with an eccentric waist hole 303 to ensure the uniqueness of the assembly method of the valve head assembly 100 and the positioning assembly 300.

[0026] Specifically, the modular rotary valve is designed based on decomposing its overall function into four core detachable modules: valve head assembly 100, valve body assembly 200, positioning assembly 300, and drive assembly 400. The valve head assembly 100 is responsible for fluid flow control and flow regulation, its core being the relative rotational motion between the rotor 103 and stator 101. The valve body assembly 200 serves as structural support, bearing other components and providing a mounting base for the stepper motor 202. The positioning assembly 300 achieves precise feedback and calibration of the valve core position through a coupling column 301 and an encoder 302. The drive assembly 400 processes control signals and drives the stepper motor 202 via a PCB board 401. The physical connections and functional divisions between the components are clear: the valve head assembly 100 is mounted on top of the valve body assembly 200, the positioning assembly 300 is built into the valve body assembly 200, and the drive assembly 400 is externally positioned to the side of the valve body assembly 200, together forming a complete valve actuator.

[0027] The purpose of this design is, firstly, to achieve a high degree of modularity, breaking down the traditional integrated valve into four independent modules: valve head assembly 100, valve body assembly 200, positioning assembly 300, and drive assembly 400. This aims to enhance product customization capabilities and production flexibility. Manufacturers can combine or replace specific modules according to different application requirements; for example, replacing the valve head assembly 100 with different specifications to adapt to different flow requirements, or upgrading the drive assembly 400 to support new communication protocols. Secondly, the design strives to achieve high pressure resistance within a compact space. The valve head assembly 100 employs a disc gasket 105 sealing structure, combined with a stator 101 surface coating (such as diamond-like carbon) and a rotor 103 made of modified polymer materials (such as polyetheretherketone), working together to withstand fluid pressures of not less than 70 MPa. Furthermore, the design aims to simplify assembly and maintenance processes. An eccentric bore 303 is provided on the coupling column 301 of the positioning assembly 300, forcing the valve core drive component 108 to mate with it at only one correct angle, eliminating the risk of assembly errors. Meanwhile, the PCB board 401 of the drive assembly 400 adopts a quick-connect interface with pins 404, allowing the sensor and motor to be directly connected via pins 404, eliminating the need for traditional internal wiring. Finally, the drive assembly 400 supports multiple communication protocols (such as RS232 / RS485, IIC, high and low levels), aiming to enhance compatibility and integration convenience with different control systems.

[0028] The advantages of this design are that the modular architecture significantly improves production and maintenance efficiency. Each component can be manufactured, tested, and stored independently, simplifying supply chain management. When a valve malfunctions, it does not require complete replacement; only the faulty module needs repair or replacement, such as replacing the worn valve head assembly 100 or upgrading the PCB board 401 of the drive assembly 400, significantly reducing maintenance costs and time. The achievement of high pressure resistance breaks through the traditional 40 MPa pressure resistance bottleneck of rotary valves, enabling reliable application in demanding conditions such as life science instruments and high-pressure water treatment. The elastic seal provided by the disc gasket 105 within the valve head assembly 100 effectively compensates for wear and thermal deformation during operation, extending seal life. The eccentric bore 303 design of the positioning assembly 300 ensures the uniqueness and correctness of the assembly between the valve core drive component 108 and the coupling column 301, avoiding decreased control accuracy or mechanical interference due to assembly deviations. Combined with the position feedback from the encoder 302, precise position control and repeatability of the valve core are achieved. The 404-type pin connection of the drive assembly 400 completely eliminates the potential for loosening, wear, and breakage associated with traditional wire connections, thus improving the reliability of the electrical connection. Simultaneously, this quick-connect structure makes assembly more convenient and facilitates rapid disconnection and reconnection during maintenance. The PCB board 401's compatibility with multiple communication protocols enhances the versatility of the rotary valve, enabling seamless integration into different types of industrial control systems or automation equipment without the need for additional conversion modules, thereby reducing system integration complexity.

[0029] Example 2, see Figure 1-13 The valve head assembly 100 includes a stator 101, a threaded hole 1011 and a bolt 1012 disposed on the stator 101, a valve head seat 102 disposed below the stator 101, and a rotor 103 disposed inside the valve head seat 102 and located below the stator 101. The surface of the stator 101 is coated with a diamond-like carbon coating.

[0030] A valve core drive component 108 is disposed below the rotor 103. A rotor seat 104 is disposed on the outer side of the top of the valve core drive component 108. A disc-shaped gasket 105 is disposed on the inner side of the rotor seat 104. A bearing 106 is disposed below the disc-shaped gasket 105. A positioning pad 107 is disposed below the bearing 106. The rotor 103 is made of modified polymer material.

[0031] The main body of the valve core transmission component 108 passes through the disc-shaped gasket 105, the bearing 106, and the positioning gasket 107. The threaded holes 1011 are arranged in a circular array on the top of the stator 101, and the bolt 1012 is located on the outside of the threaded holes 1011.

[0032] Specifically, the valve head assembly 100 is designed based on a layered structure and material combination to achieve high-pressure sealing and reliable transmission. The stator 101, as a stationary component, has a diamond-like carbon coating on its surface to enhance hardness and wear resistance. The threaded holes 1011 are arranged in a circular array to optimize the fluid channel layout. The rotor 103 is made of modified polymer materials such as polyetheretherketone (PEEK) or polyimide-based materials, utilizing their self-lubricating properties and chemical stability to form a rotating sealing surface with the stator 101. The valve core transmission component 108, as the core of power transmission, passes sequentially through the disc gasket 105, bearing 106, and positioning pad 107 to form an axial force transmission path. The disc gasket 105 provides elastic preload, the bearing 106 bears the radial load, and the positioning pad 107 defines the axial position. These three components work together to ensure that the sealing surfaces of the rotor 103 and stator 101 maintain a constant contact pressure.

[0033] The purpose of this design is to achieve high-pressure sealing reliability of no less than 70 MPa. The stator 101 is coated with a diamond-like carbon coating to reduce the coefficient of friction and improve wear resistance, while the modified polymer rotor 103 maintains dimensional stability under high pressure. Together, they form a wear-resistant sealing pair. The elastic deformation of the disc gasket 105 compensates for thermal expansion and mechanical wear during operation, preventing sealing surface failure. Secondly, this structure supports modular quick assembly and disassembly. Bolt 1012 secures the stator 101 via the valve head seat 102, and the bolt 1012 on the outside of the threaded hole 1011 facilitates the removal and replacement of the stator 101 or rotor 103. The valve core drive component 108 mates with the eccentric waist hole 303 of the lower positioning assembly 300, achieving modular connection of the drive train. Furthermore, the layered structure optimizes the force transmission path. The bearing 106 bears the radial force of the rotor 103, the positioning pad 107 limits the axial displacement of the valve core transmission component 108, and the elastic preload of the disc gasket 105 ensures the sealing surface fits. The three components have a clear division of labor to improve the overall structural rigidity.

[0034] The advantages of this design are that the combination of diamond-like carbon coating and modified polymer materials allows the sealing pair to maintain a low leakage rate at 70 MPa pressure, breaking through the pressure resistance bottleneck of 40 MPa for traditional rotary valves. The elastic compensation capability of the disc gasket 105 extends the seal life and reduces maintenance frequency. The modular structure simplifies the maintenance process; when the stator 101 or rotor 103 wears, only bolt 1012 needs to be removed to replace the internal parts of the valve head assembly 100, without disassembling the entire valve. The layered force transmission structure enhances operational stability; the bearing 106 isolates the radial vibration of the rotor 103, the positioning pad 107 prevents axial movement of the valve core transmission component 108, and the disc gasket 105 buffers pressure fluctuation impacts, jointly ensuring the valve's operating accuracy and lifespan under high-pressure conditions. The design of the circular array of threaded holes 1011 optimizes the uniformity of fluid distribution and reduces the risk of local eddies or erosion.

[0035] Example 3, see Figures 1-13The valve body assembly 200 includes a valve body 201. The valve body 201 has an installation and positioning hole for an optocoupler sensor 203 on its outer side. The valve body 201 has a main through hole 204 on its top so that the valve core transmission component 108 can pass through the main through hole 204. The valve body 201 also has a connection hole 205 on its top so that the valve head assembly 100 can be connected to the valve body assembly 200.

[0036] A stepper motor 202 is provided below the valve body 201. A second connection hole 208 is provided at the bottom of the valve body 201. A second bolt 207 is provided in the second connection hole 208. The stepper motor 202 is provided with a motor shaft 206. The motor shaft 206 is located inside the valve body 201 and below the main through hole 204. The valve body 201 is connected to the stepper motor 202 by the second bolt 207.

[0037] Specifically, the design principle of the valve body assembly 200 is based on constructing a modular connection frame and a precise transmission channel. The valve body 201 serves as the core support structure, with its top main through-hole 204 providing a through-pass for the valve core transmission component 108. The bottom connecting hole 208, secured by bolts 207, fixes the stepper motor 202, forming a power transmission path from the motor shaft 206 to the valve core transmission component 108. The outer side of the valve body 201 has a pre-set mounting and positioning hole for the optocoupler sensor 203, ensuring that the sensor and the encoder 302 of the positioning assembly 300 maintain a fixed relative position. The connecting hole 205 serves as the docking interface for the valve head assembly 100, enabling rapid assembly via bolts.

[0038] The purpose of this design is, firstly, to achieve physical decoupling and rapid assembly of the various functional modules. The valve body 201 is bolted to the valve head assembly 100 via connection hole one 205, and bolted to the stepper motor 202 via connection hole two 208, forming a modular unit that can be independently disassembled and assembled. Secondly, the axis of the main through hole 204 must be strictly coaxial with the motor shaft 206 to ensure that the power transmission of the valve core drive component 108 is free from off-center load. The mounting and positioning hole of the optocoupler sensor 203 must precisely correspond to the rotation plane of the encoder 302 to ensure the accuracy of the position detection signal. Furthermore, the valve body 201 must possess sufficient structural strength to withstand the fluid pressure transmitted by the valve head assembly 100 under high-pressure conditions.

[0039] The advantages of this design are that the modular connection structure significantly simplifies the assembly process. The stepper motor 202 can be separated for maintenance or replacement simply by removing bolt 207, and the valve head assembly 100 can be quickly replaced by removing the bolt at connection hole 205. The dedicated mounting and positioning hole of the optocoupler sensor 203 eliminates the need for manual adjustment, ensuring that the gap and angle between the sensor and the encoder 302 meet the detection requirements and improving position feedback accuracy. The one-piece molded valve body 201 enhances overall rigidity, the precision-machined inner wall of the main through hole 204 reduces the frictional resistance of the valve core transmission component 108, and the optimized distribution of connection holes 205 and 208 optimizes the stress state of the valve body 201, jointly improving structural stability under high-pressure conditions.

[0040] Example 4, see Figures 1-13 The positioning component 300 includes a coupling column 301 and an encoder 302. The coupling column 301 and the encoder 302 are fixed together by welding. An eccentric waist hole 303 is provided on the top of the coupling column 301 to ensure the uniqueness of the connection between the eccentric waist hole 303 and the valve core transmission component 108.

[0041] The coupling column 301 is a cylindrical structure, and the motor shaft 206 passes through the bottom of the coupling column 301. The code disk 302 is a semi-circular plate with notches 3021 and pin holes 3022. The pin holes 3022 provide precise positioning for welding. The code disk 302 has different forms depending on the number of notches 3021.

[0042] Specifically, the positioning component 300 is designed based on a dual mechanism of mechanical error prevention and position feedback. The coupling column 301 adopts a cylindrical structure to accommodate the motor shaft 206, and its top has an eccentric waist hole 303 with asymmetrical geometry. This shape uniquely matches the corresponding structure at the end of the valve core drive component 108, ensuring only a single correct angle during forced assembly. The encoder 302 is positioned via a pin hole 3022, thereby being welded to the coupling column 301. The pin hole 3022 provides a radial positioning reference during welding, ensuring that the plane of the encoder 302 is perpendicular to the axis of the coupling column 301. The notch 3021 on the edge of the encoder 302 cooperates with the optocoupler sensor 203 of the valve body assembly 200 to detect the rotational position via photoelectric signals.

[0043] The primary purpose of this design is to eliminate the risk of angular deviation during assembly. The specific contour of the eccentric waist hole 303 ensures that the valve core transmission component 108 can only be inserted in a preset direction, avoiding misalignment due to human error. Secondly, the number of notches 3021 on the encoder 302 is variable, allowing for different resolution positioning requirements to be accommodated by replacing the encoder 302 with different numbers of notches 3021. The pin hole 3022 ensures precise and controllable circumferential positioning of the encoder 302 and the coupling column 301 during welding, maintaining the angular correlation between the notches 3021 and the eccentric waist hole 303. Furthermore, the modular design allows the positioning component 300 to be disassembled and replaced as a whole without adjusting the installation position of the optocoupler sensor 203.

[0044] The advantages of this design are improved assembly reliability and control precision. The error-proof feature of the eccentric waist hole 303 completely eliminates the possibility of incorrect installation of the valve core transmission component 108, ensuring the correct initial sealing surface fit between the rotor 103 and the stator 101. The encoder 302 is fixed to the coupling column 301 by welding, ensuring that the notch 3021 and the eccentric waist hole 303 maintain a constant phase relationship, so that the valve core position signal detected by the optocoupler sensor 203 is strictly synchronized with the actual mechanical position. Encoders 302 with different numbers of notches 3021 can be flexibly selected to meet the needs of different scenarios from coarse positioning to high-precision closed-loop control. The overall modular structure simplifies the maintenance process. When it is necessary to change the positioning accuracy level, it is only necessary to disassemble the entire positioning component 300 and replace it with the corresponding encoder 302 model, without recalibrating the position of the optocoupler sensor 203.

[0045] The code disk 302 can also be a circular plate, depending on actual needs, with notches 3021 evenly distributed along the code disk 302. Figures 11-13 The display shows the form of code disk 302 with different numbers of missing slots 3021. Figure 11 The number of slots 3021 on the middle code disk 302 is 7. Figure 12 The number of slots 3021 on the central code disk 302 is 10. Figure 13 The number of slots 3021 on the middle code disk 302 is 16.

[0046] Example 5: The drive assembly 400 includes a PCB board 401. The PCB board 401 supports multiple communication protocols such as serial port (RS232 / RS485), high and low level, and IIC. The PCB board 401 is connected to the valve body assembly 200 by bolts 402.

[0047] The PCB board 401 has a connection port 403, and the connection port 403 has a pin 404. The sensor and the motor are connected through the pin 404.

[0048] Specifically, the design principle of the drive component 400 is based on the standardization and modular separation of electrical interfaces. The PCB board 401 serves as the control core, driving the stepper motor 202 through its integrated signal processing circuit, while simultaneously receiving feedback signals from the encoder 302 of the positioning component 300. The pins 404 embedded in the connector 403 provide physical connection points, allowing the cable terminals of the sensors and motors to directly connect and conduct. Bolts 402 mechanically fix the PCB board 401 to the outside of the valve body assembly 200, forming a detachable electrical module.

[0049] The purpose of this design is, firstly, to achieve complete cable-free electrical connections. Pins 404 replace traditional soldered or connector wires, allowing the stepper motor 202 and optocoupler sensor 203 to connect directly to the PCB board 401, eliminating the need for wiring. Secondly, the PCB board 401 integrates a multi-protocol communication chip, supporting different control system instruction formats such as RS232 / RS485 serial communication, high and low level switching signals, and IIC bus through hardware circuitry. Furthermore, the fastening method of bolts 402 allows the drive assembly 400 to be an independent module, physically separable from the valve body assembly 200.

[0050] The advantages of this design are improved reliability and maintenance efficiency. The rigid contact of pin 404 avoids the risks of bending fatigue and connector oxidation associated with traditional wires, ensuring long-term stability of the electrical connection. Multi-protocol compatibility allows the same drive component 400 to be adapted to different master control devices, such as connecting to an industrial PLC system via RS485 or an embedded controller via IIC, without modifying the hardware structure. The modular assembly method simplifies the maintenance process; simply removing bolt 3 402 allows the entire PCB board 401 to be removed for inspection or replacement, avoiding the need to operate wires within the confined valve body 201. The directional arrangement of pins 404 also provides error prevention, ensuring that sensor and motor interfaces are not mis-inserted.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A novel modular rotary valve, comprising a valve head assembly (100) and a valve body assembly (200), characterized in that: It also includes a positioning component (300) and a drive component (400). The valve head component (100) is disposed on the valve body component (200), the positioning component (300) is disposed inside the valve body component (200), and the drive component (400) is disposed outside the valve body component (200). The valve head component (100), valve body component (200), positioning component (300), and drive component (400) are all modular and detachable components. The valve head assembly (100) is provided with a disc-shaped gasket (105) to ensure the sealing effect of the valve head assembly (100). The coupling column (301) of the positioning assembly (300) is provided with an eccentric waist hole (303) to ensure the uniqueness of the assembly method of the valve head assembly (100) and the positioning assembly (300).

2. The novel modular rotary valve according to claim 1, characterized in that: The valve head assembly (100) includes a stator (101), a threaded hole (1011) and a bolt (1012) disposed on the stator (101), a valve head seat (102) disposed below the stator (101), and a rotor (103) disposed inside the valve head seat (102) and located below the stator (101). The surface of the stator (101) is coated with a diamond-like carbon coating, and the rotor (103) is made of a modified polymer material.

3. A novel modular rotary valve according to claim 2, characterized in that: A valve core drive component (108) is provided below the rotor (103), a rotor seat (104) is provided on the outer side of the top of the valve core drive component (108), a disc-shaped gasket (105) is provided on the inner side of the rotor seat (104), a bearing (106) is provided below the disc-shaped gasket (105), and a positioning pad (107) is provided below the bearing (106).

4. A novel modular rotary valve according to claim 3, characterized in that: The main body of the valve core transmission component (108) passes through the disc-shaped gasket (105), bearing (106), and positioning gasket (107). The threaded holes (1011) are arranged in a circular array on the top of the stator (101), and the bolt (1012) is located outside the threaded holes (1011).

5. A novel modular rotary valve according to claim 4, characterized in that: The valve body assembly (200) includes a valve body (201). The valve body (201) has an installation and positioning hole for an optocoupler sensor (203) on its outer side. The valve body (201) has a main through hole (204) on its top so that the valve core transmission component (108) can pass through the main through hole (204). The valve body (201) also has a connection hole (205) on its top so that the valve head assembly (100) can be connected to the valve body assembly (200).

6. A novel modular rotary valve according to claim 5, characterized in that: A stepper motor (202) is provided below the valve body (201). A second connection hole (208) is provided at the bottom of the valve body (201). A second bolt (207) is provided in the second connection hole (208). The stepper motor (202) is provided with a motor shaft (206). The motor shaft (206) is located inside the valve body (201) and below the main through hole (204). The valve body (201) is connected to the stepper motor (202) through the second bolt (207).

7. A novel modular rotary valve according to claim 6, characterized in that: The positioning component (300) includes a coupling column (301) and a code disk (302). The coupling column (301) and the code disk (302) are fixed together by welding. The top of the coupling column (301) is provided with the eccentric waist hole (303) to ensure the uniqueness of the connection method between the eccentric waist hole (303) and the valve core transmission component (108).

8. A novel modular rotary valve according to claim 7, characterized in that: The coupling column (301) is a cylindrical structure. The motor shaft (206) passes through the bottom of the coupling column (301). The code disk (302) is a semi-circular plate. The code disk (302) is provided with notches (3021) and pin holes (3022). The pin holes (3022) provide precise positioning for welding. The code disk (302) has different forms depending on the number of notches (3021).

9. A novel modular rotary valve according to claim 1, characterized in that: The drive assembly (400) includes a PCB board (401), which supports multiple communication protocols such as serial port (RS232 / RS485), high and low level, and IIC. The PCB board (401) is connected to the valve body assembly (200) by bolt three (402).

10. A novel modular rotary valve according to claim 9, characterized in that: The PCB board (401) is provided with a connection port (403), and a pin (404) is provided in the connection port (403). The sensor and the motor are connected through the pin (404).

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