A double-acting flow amplifier suitable for rapid assembly

Abstract

This invention discloses a dual-acting flow amplifier suitable for rapid assembly in the field of industrial flow control. It comprises a main body, a second main body, and a dual-diaphragm assembly. The main body and the second main body have similar structures, both including a housing, an air chamber, a sealing base, a valve core, an elastic metal sheet, and a cover plate. The air chamber, sealing base, and valve core are nested inside the housing and pressed together as a single unit by the elastic metal sheet, cover plate, and bolts. During operation, regulating gas drives the dual-diaphragm assembly in a linear reciprocating motion, actuating the two valve cores to control the on / off state, flow rate, and pressure of two compressed air streams. This invention employs a modular nested and bolted connection structure, making assembly simple and efficient. It not only effectively improves the efficiency of manual assembly but also adapts to mass production and automated assembly. Furthermore, it features dual-path control, a simple structure, and precise control, making it suitable for pneumatic control scenarios such as valve positioners.

Description

Technical Field

[0001] This invention relates to the field of industrial flow control, and in particular to a double-acting flow amplifier suitable for rapid assembly. Background Technology

[0002] Automatic control valves are an important component of industrial automation instrumentation. Valve positioners, as key control accessories for control valves, significantly improve valve control characteristics, enhancing control accuracy, response speed, and flexibility. The pressure generated by the electrical conversion module in the valve positioner is typically 0.015~1.0 kg / cm². 2 The circuit pressure of the pneumatic actuator of the positioner typically needs to be 1.4~7.0 kg / cm². 2 Therefore, pressure-flow amplifiers are needed to coordinate them. Pressure-flow amplifiers, also known as pneumatic amplifiers, are essentially micro-pressure control elements. They use a very low-pressure, low-flow-rate air pressure signal as the input control signal to obtain a high-pressure, high-flow-rate air pressure signal capable of driving pneumatic actuators.

[0003] Pressure flow amplifiers can be classified into several types according to their structure, including diaphragm type, diaphragm cutoff type, diaphragm slider type, and diaphragm sliding column type; according to the air resistance form inside their structure, they can be classified into adjustable amplifiers and non-adjustable amplifiers; and according to their performance, they can be classified into on / off amplifiers and proportional amplifiers. Diaphragm proportional amplifiers are generally used in valve positioners. The patented "Double-acting pressure-reducing diaphragm pressure flow amplifier" (CN121474373A) regulates the flow and pressure of two air paths through the linear reciprocating motion of a double diaphragm assembly, making it applicable to a wider range of scenarios. However, the body of this patent is integrally molded, which, although having the advantages of fewer parts and high integration, makes assembly more difficult. Manual assembly is time-consuming and difficult to automate. Furthermore, the numerous pressure-reducing components increase costs and create more potential points of failure in high and low temperature environments. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, this invention provides a double-acting flow amplifier suitable for rapid assembly, which simplifies the pressure reducing device and allows for assembly of the entire unit through simple component nesting and bolt connection, significantly improving assembly efficiency.

[0005] The technical solution of the present invention is as follows: A double-acting flow amplifier suitable for rapid assembly includes a first body, a second body, and a double diaphragm assembly 1; the components of the first body include a housing 2, an air chamber 3, a sealing base 4, a valve core 5, an elastic metal sheet 6, and a cover plate 7, and the components of the second body are the same as those of the first body. The housing 2 has three chambers inside: an exhaust chamber 8, an intake chamber 9, and an outlet chamber 10, with the intake chamber 9 located between the exhaust chamber 8 and the outlet chamber 10. The air chamber 3 is a thin-walled shell structure nested inside the shell 2. A part of the air chamber 3 is located in the air inlet chamber 9, called the air inlet cavity 11, and the other part of the air chamber 3 is located in the air outlet chamber 10, called the air outlet cavity 12. The side walls of the air inlet cavity 11 and the air outlet cavity 12 are provided with through holes. The compressed air in the air inlet chamber 9 can flow into the air inlet cavity 11 through the through hole of the air inlet cavity 11, and the compressed air in the air outlet cavity 12 can flow into the air outlet chamber 10 through the through hole of the air outlet cavity 12. The sealing base 4 is a cylindrical structure with a through hole in the middle, called the valve hole 13. The sealing base 4 is nested inside the air chamber 3 and is located between the air inlet chamber 11 and the air outlet chamber 12. The compressed air in the air inlet chamber 11 can flow into the air outlet chamber 12 through the valve hole 13. The cross-section of the valve core 5 is I-shaped. The valve core 5 can be obtained by rotating the I-shaped part around its own axis of symmetry. The top of the valve core 5 with a larger diameter is called valve stop 501, and the rod-shaped part with a smaller diameter than valve stop 501 is called ejector pin 502. The length of the valve core 5 is greater than the length of the valve bore 13; the valve core 5 passes through the valve bore 13, and the middle part of the valve core 5 is located inside the valve bore 13. The valve stop 501 and the ejector pin 502 are located at the two ends of the valve bore 13, respectively; the diameter of the valve stop 501 is greater than the diameter of the valve bore 13. When the valve core 5 moves to a certain position along the central axis of the valve bore 13, the valve stop 501 contacts the sealing base 4. Both the elastic metal sheet 6 and the cover plate 7 are flat plate structures. The cover plate 7 is connected to the housing 2 by bolt 14, and the elastic metal sheet 6 is pressed onto the housing 2 by the cover plate 7. The elastic metal sheet 6 contacts the ejector pin 502 and pushes the ejector pin 502 toward the double diaphragm assembly 1. The connection relationships of the parts of the second body are the same as those of the first body; The flow amplifier is obtained by connecting the dual diaphragm assembly 1, the first body, and the second body into a whole according to the following conditions: (1) The shell 1 2 and the shell 2 8 are connected as a whole by bolt 2 15, and the exhaust chambers of the two are connected together to form a complete intermediate cavity; (2) The double diaphragm assembly 1 is disposed inside the intermediate cavity and reciprocates linearly along the central axis of the valve hole 13; When the dual diaphragm assembly 1 moves toward the first body, it contacts the ejector pin 502, pushing the valve core 5 toward the outlet chamber 10. After the valve core 5 is pushed, the valve stop 501 disengages from the sealing base 4, and the compressed air inside the intake chamber 9 flows into the outlet chamber 10 through the gap between the valve stop 501 and the valve hole 13. At this time, the valve core of the second body contacts the sealing base, and the compressed air cannot flow from the intake chamber into the outlet chamber. When the dual diaphragm assembly 1 moves toward the second body, the actions of the first and second bodies are opposite to the above actions.

[0006] Furthermore, the dual diaphragm assembly 1 includes a movable rod 16, a flexible diaphragm 17, a flexible diaphragm 18, a flexible diaphragm 19, a flexible diaphragm 20, and a flexible diaphragm 21; the movable rod 16 is a round rod structure, and the central axis of the movable rod 16 coincides with the central axis of the valve hole 13; the flexible diaphragms 17, 18, 19, 20, and 21 are all thin sheet structures and are all fixed on the movable rod 16, and the thickness direction of the four is parallel to the central axis of the movable rod 16; The first flexible diaphragm 17 is fixed to the first housing 2, forming an air inlet chamber 9 together with the first housing 2; the second flexible diaphragm 18 is fixed to the first housing 2, forming an exhaust chamber 8 together with the first flexible diaphragm 17; the third flexible diaphragm 19 is fixed between the first housing 2 and the second housing 8, forming an adjustment cavity 22 together with the first housing 2; the fourth flexible diaphragm 20 is fixed between the first housing 2 and the second housing 8, forming an adjustment cavity 23 together with the third flexible diaphragm 19; the fifth flexible diaphragm 21 is fixed to the second housing 8, forming an exhaust chamber of the second body together with the fourth flexible diaphragm 20, and forming an air inlet chamber of the second body together with the second housing 8; observed along the central axis of the movable rod 16, the arrangement order of the above mechanisms is: exhaust chamber 10, valve core 5, air inlet chamber 9, first flexible diaphragm 17, second flexible diaphragm 18, third flexible diaphragm 19, fourth flexible diaphragm 20, and fifth flexible diaphragm 21; After the regulating air flows into the regulating chamber 23, the pressure inside the regulating chamber 23 increases, pushing the movable rod 16 to move towards the air intake chamber 9. The movable rod 16 pushes the valve core 5 to move towards the air outlet chamber 10. After the regulating air flows into the regulating chamber 22, the pressure inside the regulating chamber 22 increases, pushing the movable rod 16 to move towards the air intake chamber of the machine body 2. The movable rod 16 pushes the valve core of the machine body 2 to move towards the air outlet chamber of the machine body 2.

[0007] Furthermore, the air chamber 3 can be divided into three annular structures: ring one 24, ring two 25 and ring three 26; the inner diameter of ring two 25 is smaller than the inner diameters of ring one 24 and ring three 26, and it is located between ring one 24 and ring three 26. The horizontal end face of ring 24 is provided with corrugations 27, which are in close contact with the flexible diaphragm 17 and together form an air intake cavity 11; the sealing base 4 is disposed inside ring 25; the horizontal end face of ring 3 26 is in close contact with the elastic metal sheet 6. The side walls of ring 24 and ring 26 are provided with through holes, called vent holes 28. Compressed air flows into the intake chamber 11 from the vent hole 28 of ring 24, and compressed air in the outlet chamber 12 flows out to the outside from the vent hole 28 of ring 26.

[0008] Furthermore, an O-ring 29 is provided on the outer wall of the sealing base 4. When the sealing base 4 is placed inside the second ring 25, the O-ring 29 is in close contact with both the sealing base 4 and the second ring 25, preventing compressed air from flowing through the gap between the sealing base 4 and the second ring 25.

[0009] Furthermore, a magnet 30 is provided on the double diaphragm assembly 1, and the magnet 30 moves together with the double diaphragm assembly 1; a magnetic field measurement module 31 is provided on the housing 2, which is used to measure the magnetic field strength of the magnet 30 and calculate the position of the magnet 30 based on the change in the magnetic field strength of the magnet 30.

[0010] The beneficial technical effects of this invention are as follows: Rapid assembly and adaptation: The modular nesting and bolt connection structure has a high degree of parts standardization, which greatly improves the efficiency of manual assembly and makes it easy to achieve automated assembly, maintenance and replacement. Dual-channel synchronous control: Through the linear reciprocating motion of a single set of dual diaphragm components, the flow rate and pressure of two compressed air channels can be controlled independently at the same time, making it applicable to a wider range of scenarios; Real-time position monitoring: The dual diaphragm assembly is equipped with a magnet and the housing is equipped with a magnetic field measurement module, which can monitor the diaphragm displacement in real time and achieve precise feedback control of flow and pressure. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of an embodiment; Figure 2 This is an appearance drawing of an embodiment; Figure 3 This is an exploded view of an embodiment; Figure 4 This is a structural diagram of the air chamber; Figure 5 This is a structural diagram of the sealing base.

[0012] In the diagram, the correspondence between the component names and their corresponding numbers is as follows: 1. Double diaphragm assembly; 2. Housing; 3. Air chamber; 4. Sealing base; 5. Valve core; 6. Elastic metal sheet; 7. Cover plate; 8. Exhaust chamber; 9. Inlet chamber; 10. Outlet chamber; 11. Inlet cavity; 12. Outlet cavity; 13. Valve hole; 14. Bolt 1; 15. Bolt 2; 16. Movable rod; 17. Flexible diaphragm 1; 18. Flexible diaphragm. II; 19. Flexible diaphragm III; 20. Flexible diaphragm IV; 21. Flexible diaphragm V; 22. Adjustment chamber I; 23. Adjustment chamber II; 24. Ring I; 25. Ring II; 26. Ring III; 27. Corrugated; 28. Vent hole; 29. ​​O-ring seal; 30. Magnet; 31. Magnetic field measurement module; 32. IP air intake; 33. Air intake; 34. Air outlet; 501. Valve stop; 502. Pin. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] The structure of the embodiment is as follows Figures 1-3 As shown, the basic principle is to use compressed air from the electrical conversion module (also known as the IP module) as regulating air to drive a diaphragm mechanism, which in turn pushes two valve cores, thereby changing the output airflow of the two air paths.

[0015] To improve the efficiency of mass production and assembly, the embodiment is designed with a modular structure, mainly including a first body, a second body, and a double diaphragm assembly 1. The components of the first body include a housing 2, an air chamber 3, a sealing base 4, a valve core 5, an elastic metal sheet 6, and a cover plate 7; the components of the second body are identical to those of the first body, and the components of the two are interchangeable. This design improves the standardization of components, which is beneficial for mass production and maintenance.

[0016] The housing 2 has three chambers inside: an exhaust chamber 8, an intake chamber 9, and an outlet chamber 10. The intake chamber 9 is located between the exhaust chamber 8 and the outlet chamber 10.

[0017] like Figure 4As shown, the air chamber 3 is a thin-walled shell structure, which can be divided into three annular structures: ring one 24, ring two 25, and ring three 26. The inner diameter of ring two 25 is smaller than the inner diameters of ring one 24 and ring three 26, and it is located between ring one 24 and ring three 26. Corrugations 27 are provided on the horizontal end face of ring one 24. The air chamber 3 is nested inside the shell 2. Ring one 24 is located in the air inlet chamber 9, and the interior of ring one 24 is called the air inlet cavity 11; ring three 26 is located in the air outlet chamber 10, and the interior of ring three 26 is called the air outlet cavity 12. Through holes, called vent holes 28, are provided on the side walls of ring one 24 and ring three 26. Compressed air flows into the air inlet cavity 11 from the vent hole 28 of ring one 24, and compressed air in the air outlet cavity 12 flows out to the outside from the vent hole 28 of ring three 26.

[0018] like Figure 5 As shown, the sealing base 4 has a cylindrical structure with a through hole in the middle, called the valve hole 13. The sealing base 4 is located inside the ring 25, between the intake chamber 11 and the outlet chamber 12. Compressed air from the intake chamber 11 can flow into the outlet chamber 12 through the valve hole 13. Figure 1 As shown, an O-ring 29 is provided on the outer wall of the sealing base 4. When the sealing base 4 is placed inside the second ring 25, the O-ring 29 is in close contact with both the sealing base 4 and the second ring 25, preventing compressed air from flowing through the gap between the sealing base 4 and the second ring 25.

[0019] The valve core 5 has an H-shaped cross-section, which is obtained by rotating the H-shape around its own axis of symmetry. The larger diameter top of the valve core 5 is called the valve stop 501, and the smaller diameter rod-shaped portion is called the ejector pin 502. The length of the valve core 5 is greater than the length of the valve bore 13. The valve core 5 passes through the valve bore 13, with its middle portion located inside the valve bore 13. The valve stop 501 and ejector pin 502 are located at opposite ends of the valve bore 13. The diameter of the valve stop 501 is greater than the diameter of the valve bore 13. When the valve core 5 moves along the central axis of the valve bore 13 to a certain position, the valve stop 501 contacts the sealing base 4.

[0020] Both the elastic metal sheet 6 and the cover plate 7 are flat structures. The cover plate 7 is connected to the housing 2 by bolt 14, and the elastic metal sheet 6 is pressed against the housing 2 by the cover plate 7. The elastic metal sheet 6 contacts the ejector pin 502 and pushes the ejector pin 502 toward the double diaphragm assembly 1. The horizontal end face of the ring 26 is in close contact with the elastic metal sheet 6.

[0021] The connection relationships of the components of the second body are the same as those of the first body. A plane can be found such that the air chamber 3, sealing base 4, valve core 5, elastic metal sheet 6 and cover plate 7 of the first and second bodies are mirror-symmetrical about this plane.

[0022] The dual diaphragm assembly 1 includes a movable rod 16, a flexible diaphragm 17, a flexible diaphragm 18, a flexible diaphragm 19, a flexible diaphragm 20, and a flexible diaphragm 21. The movable rod 16 is a round rod structure, and its central axis coincides with the central axis of the valve hole 13. The flexible diaphragms 17, 18, 19, 20, and 21 are all thin sheet structures and are all fixed to the movable rod 16, and their thickness directions are all parallel to the central axis of the movable rod 16.

[0023] Flexible diaphragm 17 is fixed to housing 2. The corrugations 27 of ring 24 are in close contact with flexible diaphragm 17 and together they form air intake chamber 11. Flexible diaphragm 28 is fixed to housing 2 and together with flexible diaphragm 17 forms exhaust chamber 8. Flexible diaphragm 39 is fixed between housing 2 and housing 28 and together with housing 2 forms adjustment chamber 22. Flexible diaphragm 40 is fixed between housing 2 and housing 28 and together with flexible diaphragm 319 forms adjustment chamber 23. Flexible diaphragm 521 is fixed to housing 28 and together with flexible diaphragm 420 forms exhaust chamber of body 2 and air intake chamber of body 2. Observing along the central axis of movable rod 16, the arrangement order of the above mechanisms is: exhaust chamber 10, valve core 5, air intake chamber 9, flexible diaphragm 17, flexible diaphragm 28, flexible diaphragm 319, flexible diaphragm 420, and flexible diaphragm 521.

[0024] The flow amplifier is obtained by connecting the dual diaphragm assembly 1, the first body, and the second body into a whole according to the following conditions: (1) The shell 1 2 and the shell 2 8 are connected as a whole by bolt 2 15, and the exhaust chambers of the two are connected together to form a complete intermediate cavity; (2) The double diaphragm assembly 1 is located inside the intermediate cavity and moves in a reciprocating linear motion along the central axis of the valve hole 13.

[0025] The working principle of the embodiment is as follows: When regulated air from the IP module flows into regulating chamber 22 from the IP intake passage, the dual diaphragm assembly 1 is pushed by the pressure of regulating chamber 22 towards the machine body. The dual diaphragm assembly 1 contacts the ejector pin 502, pushing the valve core 5 towards the outlet chamber 10. After the valve core 5 is pushed, the valve stop 501 disengages from the sealing base 4. The regulated compressed air flows into the intake chamber 11 from the intake passage 33, then into the outlet chamber 12 through the gap between the valve stop 501 and the valve hole 13, and finally out from the outlet passage 34. At this time, the valve core of the machine body 2 is in contact with the sealing base, and the regulated compressed air cannot flow from the intake passage into the outlet passage. When regulated air flows into regulating chamber 23 from the IP intake passage, the actions of the machine body 1 and the machine body 2 are the opposite of the above actions.

[0026] A magnet 30 is installed on the dual diaphragm assembly 1, and the magnet 30 moves with the dual diaphragm assembly 1. A magnetic field measurement module 31 is installed on the housing 2 to measure the magnetic field strength of the magnet 30 and calculate the position of the magnet 30 based on the change in the magnetic field strength. If only one air path is in operation, the position of the magnet 30 can be used to determine the movement position of the dual diaphragm assembly 1, which is helpful for predicting the valve control position. If both air paths are in operation, the position of the magnet 30 can be used to determine the balance position of the valve cores of the two air paths, which is helpful for quickly stabilizing the valve opening.

[0027] like Figure 3 As shown, the embodiment can be assembled by nesting parts and connecting them with bolts. The installation method is very simple and efficient, which can not only improve the efficiency of manual assembly, but also facilitate the realization of automated assembly.

[0028] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, and for those of ordinary skill in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. Therefore, the present invention is not limited to the specific details without departing from the general concept defined by the claims and their equivalents.

Claims

1. A double-acting flow amplifier suitable for rapid assembly, characterized in that: It includes a first body, a second body, and a double diaphragm assembly (1); the components of the first body include a housing (2), an air chamber (3), a sealing base (4), a valve core (5), an elastic metal sheet (6), and a cover plate (7); the components of the second body are the same as those of the first body. The housing (2) has three chambers inside: an exhaust chamber (8), an intake chamber (9), and an outlet chamber (10), with the intake chamber (9) located between the exhaust chamber (8) and the outlet chamber (10); The air chamber (3) is a thin-walled shell structure nested inside the shell (2). A part of the air chamber (3) is located in the air inlet chamber (9), called the air inlet cavity (11), and the other part of the air chamber (3) is located in the air outlet chamber (10), called the air outlet cavity (12). Through holes are provided on the side walls of the air inlet cavity (11) and the air outlet cavity (12). The compressed air in the air inlet chamber (9) can flow into the air inlet cavity (11) through the through hole of the air inlet cavity (11), and the compressed air in the air outlet cavity (12) can flow into the air outlet cavity (10) through the through hole of the air outlet cavity (12). The sealing base (4) is a cylindrical structure with a through hole in the middle, called the valve hole (13). The sealing base (4) is nested inside the air chamber (3) and located between the air inlet chamber (11) and the air outlet chamber (12). The compressed air in the air inlet chamber (11) can flow into the air outlet chamber (12) through the valve hole (13). The cross-section of the valve core (5) is I-shaped. The valve core (5) can be obtained by rotating the I-shaped part around its own axis of symmetry. The top of the valve core (5) with a larger diameter is called the valve stop (501), and the rod-shaped part with a smaller diameter than the valve stop (501) is called the ejector pin (502). The length of the valve core (5) is greater than the length of the valve hole (13); the valve core (5) passes through the valve hole (13), and the middle part of the valve core (5) is located inside the valve hole (13). The valve stop (501) and the ejector pin (502) are located at the two ends of the valve hole (13) respectively; the diameter of the valve stop (501) is greater than the diameter of the valve hole (13). When the valve core (5) moves to a certain position along the central axis of the valve hole (13), the valve stop (501) contacts the sealing base (4). The elastic metal sheet (6) and the cover plate (7) are both flat structures. The cover plate (7) is connected to the housing (2) by bolt (14), and the elastic metal sheet (6) is pressed onto the housing (2) by the cover plate (7). The elastic metal sheet (6) contacts the ejector pin (502) and pushes the ejector pin (502) toward the double diaphragm assembly (1). The connection relationships of the parts of the second body are the same as those of the first body; The flow amplifier is obtained by connecting the dual diaphragm assembly (1), body one, and body two into a whole under the following conditions: (1) Shell 1 (2) and shell 2 (8) are connected as a whole by bolt 2 (15), and their exhaust chambers are connected together to form a complete intermediate cavity; (2) The double diaphragm assembly (1) is set inside the intermediate cavity and reciprocates linearly along the central axis of the valve hole (13); When the double diaphragm assembly (1) moves toward the first body, the double diaphragm assembly (1) contacts the ejector pin (502) and pushes the valve core (5) toward the outlet chamber (10). After the valve core (5) is pushed, the valve stop (501) disengages from the sealing base (4), and the compressed air inside the intake chamber (9) flows into the outlet chamber (10) through the gap between the valve stop (501) and the valve hole (13). At this time, the valve core of the second body contacts the sealing base, and the compressed air cannot flow from the intake chamber into the outlet chamber. When the double diaphragm assembly (1) moves toward the second body, the actions of the first body and the second body are opposite to the above actions.

2. The double-acting flow amplifier suitable for rapid assembly according to claim 1, characterized in that: The dual diaphragm assembly (1) includes a movable rod (16), a flexible diaphragm one (17), a flexible diaphragm two (18), a flexible diaphragm three (19), a flexible diaphragm four (20), and a flexible diaphragm five (21); the movable rod (16) is a round rod structure, and the central axis of the movable rod (16) coincides with the central axis of the valve hole (13); the flexible diaphragm one (17), flexible diaphragm two (18), flexible diaphragm three (19), flexible diaphragm four (20), and flexible diaphragm five (21) are all thin sheet structures and are all fixed on the movable rod (16), and the thickness direction of the four is parallel to the central axis of the movable rod (16); The first flexible diaphragm (17) is fixed on the first housing (2) and together with the first housing (2) forms the air intake chamber (9); the second flexible diaphragm (18) is fixed on the first housing (2) and together with the first flexible diaphragm (17) forms the exhaust chamber (8); the third flexible diaphragm (19) is fixed between the first housing (2) and the second housing (8) and together with the first housing (2) forms the regulating cavity (22); the fourth flexible diaphragm (20) is fixed between the first housing (2) and the second housing (8) and together with the third flexible diaphragm (19) forms the regulating cavity (22). The second adjustment chamber (23) is formed; the fifth flexible diaphragm (21) is fixed on the second housing (8), and together with the fourth flexible diaphragm (20), it forms the exhaust chamber of the second body, and together with the second housing (8), it forms the air intake chamber of the second body; when observed along the central axis of the movable rod (16), the arrangement order of the above mechanisms is: exhaust chamber (10), valve core (5), air intake chamber (9), first flexible diaphragm (17), second flexible diaphragm (18), third flexible diaphragm (19), fourth flexible diaphragm (20), fifth flexible diaphragm (21). After the regulating air flows into regulating chamber two (23), the pressure inside regulating chamber two (23) increases, pushing the movable rod (16) to move towards the air inlet chamber (9), and the movable rod (16) pushes the valve core (5) to move towards the air outlet chamber (10); after the regulating air flows into regulating chamber one (22), the pressure inside regulating chamber one (22) increases, pushing the movable rod (16) to move towards the air inlet chamber of body two, and the movable rod (16) pushes the valve core of body two to move towards the air outlet chamber of body two.

3. A double-acting flow amplifier suitable for rapid assembly according to claim 1, characterized in that: The air chamber (3) can be divided into three annular structures: ring one (24), ring two (25) and ring three (26); the inner diameter of ring two (25) is smaller than the inner diameter of ring one (24) and ring three (26), and it is located between ring one (24) and ring three (26); The horizontal end face of ring one (24) is provided with corrugations (27), which are in close contact with the flexible diaphragm one (17) and together form an air intake cavity (11); the sealing base (4) is disposed inside ring two (25); the horizontal end face of ring three (26) is in close contact with the elastic metal sheet (6); The side walls of ring 1 (24) and ring 3 (26) are provided with through holes, called vent holes (28). Compressed air flows into the air inlet chamber (11) from the vent hole (28) of ring 1 (24), and compressed air in the air outlet chamber (12) flows out to the outside from the vent hole (28) of ring 3 (26).

4. A double-acting flow amplifier suitable for rapid assembly according to claim 3, characterized in that: An O-ring (29) is provided on the outer wall of the sealing base (4). When the sealing base (4) is placed inside the second ring (25), the O-ring (29) is in close contact with both the sealing base (4) and the second ring (25) to prevent compressed air from flowing through the gap between the sealing base (4) and the second ring (25).

5. A double-acting flow amplifier suitable for rapid assembly according to claim 4, characterized in that: A magnet (30) is provided on the double diaphragm assembly (1), and the magnet (30) moves together with the double diaphragm assembly (1); a magnetic field measurement module (31) is provided on the housing (2) to measure the magnetic field strength of the magnet (30) and calculate the position of the magnet (30) based on the change in the magnetic field strength of the magnet (30).

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