Quick response driving mechanism of high-precision sterile diaphragm valve

Abstract

The invention relates to the technical field of driving mechanisms, and discloses a quick response driving mechanism of a high-precision sterile diaphragm valve, which comprises an air cylinder driving mechanism and a control air pipe, the air cylinder driving mechanism is used for providing compressed air, the control air pipe comprises a pipe body and a drying strip, and the drying strip is attached to the inner wall of the air pipe and extends along the axis of the pipe body; each drying strip is provided with a containing pipeline and an airflow channel, the airflow channels extend in the extending direction of the pipe body, the containing pipelines extend in the extending direction of the pipe body, the containing pipelines are arranged between the inner wall of the pipe body and the airflow channels and used for containing drying agents, the drying strips are provided with a plurality of adsorption holes, and the airflow channels and the containing pipelines are communicated through the adsorption holes. The moisture possibly contained in the compressed air of the air cylinder is removed, and corrosion or microorganism breeding of the diaphragm valve or a driving mechanism of the diaphragm valve due to the moisture in the air is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of drive mechanisms, and in particular to a fast-response drive mechanism for a high-precision sterile diaphragm valve. Background Art

[0002] With the rapid development of medical technology and the biopharmaceutical industry, the demand for high-precision sterile diaphragm valves in the fields of infusion systems, pharmaceutical equipment, and sterile fluid control is growing. However, the existing diaphragm valve drive mechanisms mostly use traditional cylinder drive methods, which rely on compressed air that may contain moisture. Long-term use can easily lead to rust or microbial growth in the valve body cavity, seriously threatening the sterility requirements of the medical environment. Especially in application scenarios that require fast response and high-frequency switching, the problem of incomplete drying of the cylinder-driven airflow is more prominent, which not only affects the reliability of the valve action, but may also limit its application in the medical field due to the risk of contamination. Therefore, there is an urgent need for a fast-response drive mechanism for a high-precision sterile diaphragm valve that can dry the air to prevent the diaphragm valve or its drive mechanism from rusting or microbial growth due to moisture in the air. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a fast-response drive mechanism for a high-precision sterile diaphragm valve to remove moisture that may be contained in the compressed air in the cylinder, thereby preventing the diaphragm valve or its drive mechanism from rusting or microbial growth due to moisture in the air.

[0004] The purpose of the present invention is achieved by adopting the following technical solutions:

[0005] Fast-response drive mechanism for high-precision aseptic diaphragm valves, including:

[0006] A cylinder drive mechanism, wherein the cylinder drive mechanism is used to provide compressed air;

[0007] A control air pipe, comprising a tube body and a drying strip, wherein the drying strip is fitted to the inner wall of the tube body and extends along the axis of the tube body, the drying strip having an accommodating pipe and an air flow channel, the air flow channel extending along the extension direction of the tube body, the accommodating pipe extending along the extension direction of the tube body, the accommodating pipe being arranged between the inner wall of the tube body and the air flow channel, the accommodating pipe being used to accommodate a desiccant, and the drying strip having a plurality of adsorption holes, the adsorption holes connecting the air flow channel and the accommodating pipe.

[0008] Furthermore, the cross-sectional outer contour of the airflow channel is a polygonal star structure.

[0009] Furthermore, the tube body further includes a filter screen, which is arranged at the connection between the tube body and the cylinder drive mechanism.

[0010] Furthermore, the filter screen is a spiral filter screen, and the filter screen is spirally extended along the axis of the tube body.

[0011] Furthermore, the outlet end of the tube body is connected to two branch pipes, and the two branch pipes are respectively connected to the two air vents on the diaphragm valve; an airflow reversing valve is provided at the diversion point between the tube body and the branch pipes, and the airflow reversing valve is provided with a knob, and the knob is used to control the airflow reversing valve, and the airflow reversing valve is used to select any one of the two branch pipes to connect to the tube body.

[0012] Furthermore, the knob is connected to a scale plate, and the scale plate is used to indicate the opening degree of the branch pipe.

[0013] Furthermore, the drying strip is detachably connected to the tube body.

[0014] Furthermore, the tube body is made of transparent material.

[0015] Furthermore, a sealing rubber ring is provided at the connection between the tube body and the cylinder drive mechanism.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The desiccant accommodating pipe opened in the drying strip provides a stable storage space for the desiccant, allowing it to fully contact the airflow while avoiding being washed away by the high-speed airflow; the embedded layout of the pipe optimizes the airflow path, minimizing pressure loss while ensuring drying efficiency; the design of the accommodating pipe prevents desiccant particles from entering the air path and causing contamination, and also facilitates subsequent maintenance and replacement; in addition, the extension of the accommodating pipe along the airflow direction ensures that the gas is evenly dried in the pipe process, effectively maintaining the cleanliness and stability of the compressed air, and providing a reliable dry air source guarantee for the high-precision aseptic diaphragm valve.

[0018] 2. Based on the air flow channel opened in the drying strip, the air flow channel adopts a linear layout extending along the axis of the tube body, which reduces the pressure loss during the compressed air transportation process and ensures the stable transmission of air pressure to the drive mechanism; the parallel design of the air flow channel and the containing pipe realizes the simultaneous drying and transportation of gas, while ensuring the dryness of the air, avoiding the system delay caused by traditional external dryers and improving the response speed of the drive mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the internal structure of the control air pipe of the fast-response drive mechanism of the high-precision sterile diaphragm valve of the present invention;

[0020] Figure 2This is a schematic diagram of the appearance and structure of the fast-response drive mechanism of the high-precision aseptic diaphragm valve of the present invention;

[0021] Figure 3 This is a cross-sectional view of the control trachea of ​​the fast-response drive mechanism of the high-precision sterile diaphragm valve of the present invention.

[0022] In the figure: 1. Cylinder drive mechanism; 2. Control air pipe; 201. Tube body; 202. Drying strip; 211. Accommodating pipe; 212. Air flow channel; 3. Filter; 4. Branch pipe; 5. Air flow reversing valve; 6. Knob; 7. Dial; 8. Sealing rubber ring. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element, or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element, or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] See also Figure 1-Figure 3A fast-response drive mechanism for a high-precision aseptic diaphragm valve according to a preferred embodiment of the present invention includes a cylinder drive mechanism 1 and a control air pipe 2. The cylinder drive mechanism 1 is used to provide compressed air; the control air pipe 2 includes a tube body 201 and a drying strip 202. The drying strip 202 is attached to the inner wall of the tube body 201 and extends along the axis of the tube body 201. The drying strip 202 has an accommodating pipe 211 and an air flow channel 212. The air flow channel 212 extends along the extension direction of the tube body 201. The accommodating pipe 211 extends along the extension direction of the tube body 201. The accommodating pipe 211 is provided between the inner wall of the tube body 201 and the air flow channel 212. The accommodating pipe 211 is used to accommodate a desiccant. The drying strip 202 has a plurality of adsorption holes, which connect the air flow channel 212 and the accommodating pipe 211.

[0027] The working principle of the present invention is as follows: the fast-response drive mechanism of the high-precision sterile diaphragm valve provides compressed air through the cylinder drive mechanism 1. When the compressed air passes through the air flow channel 212 in the drying strip 202, the compressed air comes into contact with the desiccant contained in the pipe 211 inside the drying strip 202 through the adsorption holes of the drying strip 202, thereby removing moisture from the compressed air, and then the dry compressed air is sent into the diaphragm valve to open or close the diaphragm valve.

[0028] The accommodating pipe 211 for accommodating the desiccant opened in the drying strip 202 provides a stable accommodation space for the desiccant, allowing it to fully contact the airflow while avoiding being washed away by the high-speed airflow; the embedded layout of the pipe optimizes the airflow path, minimizing pressure loss while ensuring drying efficiency; the design of the accommodating pipe 211 prevents desiccant particles from entering the air path and causing pollution, and facilitates subsequent maintenance and replacement; in addition, the extension arrangement of the accommodating pipe 211 along the airflow direction ensures that the gas is evenly dried in the pipe process, effectively maintaining the cleanliness and stability of the compressed air, and providing a reliable dry gas source guarantee for the high-precision aseptic diaphragm valve.

[0029] Based on the air flow channel 212 opened in the drying strip 202, the air flow channel 212 adopts a linear layout extending along the axis of the tube body 201, which reduces the pressure loss during the compressed air transportation process and ensures that the air pressure is stably transmitted to the driving mechanism; the parallel design of the air flow channel 212 and the accommodating pipe 211 realizes the simultaneous drying and transportation of gas, while ensuring the dryness of the air, avoiding the system delay caused by the traditional external dryer, and improving the response speed of the driving mechanism.

[0030] In the present invention, the drying strip 202 is the main structure for drying air, and it has the functions of both guiding airflow and drying compressed air. The accommodating pipe 211 provided based on the drying strip 202 can not only be used to accommodate desiccant for gas drying, but the accommodating pipe 211 can also be opened in multiple lines around the airflow channel 212 to accommodate sterilizing and disinfecting substances to sterilize the air; multiple accommodating pipes 211 can be placed in different air treatment substances, and the combination of multiple substances can meet user expectations. This integrated solution breaks through the limitation of traditional air circuit systems that require multiple processing units to be connected in series, and achieves a dual breakthrough in system structure simplification and performance improvement in fields with strict sterility requirements such as medical devices and biopharmaceuticals.

[0031] Preferably, the air flow channel 212 is arranged in a spiral shape, so that the compressed air forms an extended spiral flow path in a limited space, extending the effective drying distance by 2-3 times, and ensuring that the air is in full contact with the drying medium. The containing pipe 211 simultaneously adopts a spiral layout, and different functional processing units are arranged in sections along the direction of the airflow: the upstream section is filled with a high-efficiency molecular sieve desiccant to achieve deep dehumidification, the midstream section is placed with nano-silver antibacterial material for microbial inactivation, and the downstream section is configured with activated carbon to adsorb odor molecules. This progressive treatment method allows the air to complete multi-stage purification in a single pass, thereby improving the dehumidification efficiency and sterilization rate. The centrifugal effect generated by the spiral structure causes the airflow to flow close to the pipe wall, further enhancing the mass transfer effect of the gas and the contents. The compact design reduces the volume of the equipment, which is particularly suitable for medical equipment applications with limited space.

[0032] Furthermore, the drying strip 202 can be configured in a honeycomb shape, with each honeycomb hole constituting an independent airflow channel 212. This design greatly increases the contact area between the compressed air and the desiccant, ensuring sufficient contact between the airflow and the drying medium. The parallel flow channel design ensures uniform airflow distribution and reduces pressure loss, while also improving the efficiency of drying the air, thereby increasing the response speed of the drive mechanism.

[0033] Preferably, the drying strips 202 are detachably connected to the tube body 201. Quick-release connectors are installed at both ends of the drying strips 202, allowing for quick replacement by rotating the clips. Users can swap out different types of drying strips 202 based on their needs. Drying strips 202 can be spliced ​​together to extend the length of the tube body 201. For longer tubes 201, splicing drying strips 202 allows users to extend the drying time and further ensure air dryness.

[0034] More preferably, the cross-sectional outer contour of the airflow channel 212 is a polygonal star structure. The angular structure of the star-shaped profile creates periodic turbulence within the flow channel, disrupting the development of the boundary layer and creating moderate turbulence in the airflow. Compared to a traditional circular cross-section, this significantly improves the contact efficiency between the air and the contents. The localized high-pressure areas formed at the apex of the polygonal star enhance the desiccant's ability to adsorb moisture, making it particularly suitable for processing compressed air with high humidity.

[0035] Furthermore, the airflow channel 212 is configured as a serpentine channel, and the serpentine airflow channel 212 design can reduce the noise of system operation. This special structure achieves the effect of reducing decibels through multiple bends in the airflow channel 212. The continuously gradient bend angle can effectively eliminate the eddy noise generated by sudden changes in airflow, and the high-frequency airflow sound is significantly suppressed; the serpentine layout itself has stress dispersion characteristics, which can greatly reduce the vibration of the pipe wall. Combined with the buffer structure set in key positions, it can further weaken the pressure fluctuation noise. In practical applications, this design can significantly reduce the noise level in the wide frequency band, and the overall acoustic environment is qualitatively improved. It is particularly suitable for application scenarios such as medical places and precision laboratories that require strict noise control. This structure achieves silent system operation while maintaining airflow performance.

[0036] Preferably, the tube body 201 further includes a filter 3, disposed at the junction of the tube body 201 and the cylinder drive mechanism 1. Made of a medical-grade polymer, the filter 3 effectively intercepts particulate impurities while maintaining excellent airflow permeability, preventing valve body wear caused by particulate matter and improving the stability of the drive mechanism during long-term use. Furthermore, the filter 3 can be configured as a multi-layer composite filter 3 with a gradient pore size design to ensure that airborne debris is completely blocked from entering the control airway 2.

[0037] Furthermore, the filter 3 is a spiral filter 3, extending helically along the axis of the tube body 201. This spiral structure significantly increases the contact area between the filter 3 and the compressed air, allowing for more complete and efficient impurity interception, effectively improving the filtration effect and significantly increasing the dirt holding capacity while maintaining ventilation efficiency. The spiral spatial arrangement fully utilizes the internal space of the tube body 201, increasing the area of ​​the filter 3 without increasing the pipe volume. This saves installation space for the equipment, improves space utilization, and makes the equipment structure more compact and reasonable.

[0038] Preferably, the outlet end of the tube body 201 is connected to two branch pipes 4, each of which is connected to two vents on the diaphragm valve. An airflow reversing valve 5 is provided at the junction between the tube body 201 and the branch pipes 4. The airflow reversing valve 5 is equipped with a knob 6 for controlling the airflow reversing valve 5, which is used to select which of the two branch pipes 4 is connected to the tube body 201. The two branch pipes are connected to the upper and lower chamber vents of the diaphragm valve, respectively. A manual airflow reversing valve 5 is integrated at the diversion node. The branch pipe 4 into which the compressed air enters can be changed by turning the external knob 6. Precise positioning within a 180° range is achieved using the external non-slip knob 6. When the knob 6 is rotated to the left limit, airflow is directed into the upper chamber pipe, causing the valve disc to close. When rotated to the right limit, airflow is switched to the lower chamber pipe, driving the valve disc to open. The central neutral position balances the air pressure in both directions.

[0039] Preferably, knob 6 is connected to a graduated dial 7, which indicates the degree of opening of branch pipe 4. Each graduation corresponds to a stable airflow adjustment. The clearly marked, equally divided scale allows the operator to quickly and accurately control airflow distribution and achieve refined flow rate regulation. This mechanism provides a reliable mechanical reference for system flow control, enabling precise regulation without relying on external detection equipment. This significantly improves process stability and operational efficiency in industrial scenarios requiring precise gas control, such as aseptic filling and bioreactors.

[0040] Preferably, the tube body 201 is made of a transparent material, so that the direction of the airflow can be intuitively understood, the opening and closing status of the diaphragm valve can be confirmed in real time, and accidents caused by incorrect opening and closing of the diaphragm valve can be avoided.

[0041] Furthermore, a sealing rubber ring 8 is installed at the connection between the tube body 201 and the cylinder drive mechanism 1. Made of high-temperature and corrosion-resistant silicone or fluororubber, the sealing ring adheres tightly to the connection interface, effectively preventing gas leakage. The elastic sealing structure compensates for component manufacturing tolerances, ensuring a good airtight seal even during long-term use. The O-ring groove design allows for easy and reliable installation, eliminating the need for additional tightening tools. This sealing solution ensures reliable sealing under high-pressure conditions while facilitating routine disassembly and maintenance, making it particularly suitable for precision instruments that undergo frequent maintenance.

[0042] The present invention includes but is not limited to the following technical effects:

[0043] 1. This invention achieves efficient compressed air purification through the innovative structural design of the drying strip 202. The parallel layout of the containment duct 211 and the airflow channel 212 within the drying strip 202 ensures sufficient contact between the desiccant and the airflow while preventing medium loss. The unique spiral or honeycomb channel design significantly improves gas-solid contact efficiency, enabling the air to undergo multiple stages of drying and sterilization in a single pass. The modular quick-release structure facilitates replacement of drying strips 202 with different functions according to operating conditions, enhancing the system's adaptability and ease of maintenance.

[0044] 2. This invention utilizes an integrated airflow control system to achieve precise control of the diaphragm valve. The dual-branch pipe 4, combined with the adjustable airflow reversing valve 5, precisely controls the valve's opening and closing status with a simple knob 6. The transparent tube 201 design provides intuitive visual monitoring of the airflow, effectively preventing misoperation. The optimized serpentine channel and noise reduction structure significantly reduce system operating noise while maintaining airflow performance, making it particularly suitable for medical settings with stringent acoustic requirements.

[0045] 3. This invention ensures system reliability and safety through multiple protection features. The spiral multi-layer filter 3 effectively intercepts particulate matter and protects air path components from wear. The sealing rubber ring 8 ensures both airtightness and easy maintenance. The dial adjustment mechanism 7 enables precise flow control. These innovative features enable the system to meet the high-precision control requirements of medical devices, biopharmaceuticals, and other fields with stringent sterility requirements while ensuring long-term operational stability.

[0046] 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 application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0048] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. High-precision sterile diaphragm valve fast response drive mechanism, characterized by, include: A cylinder drive mechanism (1), the cylinder drive mechanism (1) being used to provide compressed air; A control air pipe (2), comprising a pipe body (201) and a drying strip (202), wherein the drying strip (202) is attached to the inner wall of the pipe body (201) and extends along the axis of the pipe body (201), wherein the drying strip (202) has a receiving pipe (211) and an air flow channel (212), wherein the air flow channel (212) extends along the extension direction of the pipe body (201), wherein the receiving pipe (211) extends along the extension direction of the pipe body (201), wherein the receiving pipe (211) is provided between the inner wall of the pipe body (201) and the air flow channel (212), wherein the receiving pipe (211) is used for receiving a desiccant, wherein the drying strip (202) has a plurality of adsorption holes, wherein the adsorption holes communicate with the air flow channel (212) and the receiving pipe (211).

2. The fast response drive mechanism of the high-precision aseptic diaphragm valve according to claim 1 is characterized in that: The cross-sectional outer contour of the airflow channel (212) is a polygonal star structure.

3. The fast response drive mechanism of the high-precision aseptic diaphragm valve according to claim 1, characterized in that: The tube body (201) further comprises a filter screen (3), and the filter screen (3) is arranged at the connection between the tube body (201) and the cylinder drive mechanism (1).

4. The fast response drive mechanism of the high-precision aseptic diaphragm valve according to claim 3, characterized in that: The filter screen (3) is a spiral filter screen (3), and the filter screen (3) is spirally extended along the axis of the tube body (201).

5. The fast response drive mechanism of the high-precision aseptic diaphragm valve according to claim 1, characterized in that: The outlet end of the tube body (201) is connected to two branch pipes (4), and the two branch pipes (4) are respectively connected to two vents on the diaphragm valve; an airflow reversing valve (5) is provided at the diversion point between the tube body (201) and the branch pipes (4), and the airflow reversing valve (5) is provided with a knob (6), and the knob (6) is used to control the airflow reversing valve (5), and the airflow reversing valve (5) is used to select any one of the two branch pipes (4) to connect to the tube body (201).

6. The fast response drive mechanism of the high-precision aseptic diaphragm valve according to claim 5, characterized in that: The knob (6) is connected to a scale plate (7), and the scale plate (7) is used to indicate the opening degree of the branch pipe (4).

7. The fast response drive mechanism of the high-precision aseptic diaphragm valve according to claim 6, characterized in that: The drying strip (202) is detachably connected to the tube body (201).

8. The fast response drive mechanism of the high-precision aseptic diaphragm valve according to claim 1, characterized in that: The tube body (201) is made of transparent material.

9. The fast response drive mechanism of the high-precision aseptic diaphragm valve according to claim 1, characterized in that: A sealing rubber ring (8) is provided at the connection between the tube body (201) and the cylinder drive mechanism (1).

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