Pneumatic amplifier integrated with pressure regulating module

Abstract

The utility model relates to a pneumatic amplifier integrated with a pressure regulating module, which comprises a driving mechanism and an executing mechanism which are connected with each other, and a switching mechanism is arranged between the driving mechanism and the executing mechanism; a pressure reducing assembly is arranged on the executing mechanism; the driving mechanism comprises a driving valve body, the driving valve body is provided with a first driving mounting cavity and a second driving mounting cavity, a first driving diaphragm is pressed in the first driving mounting cavity through a first sealing cover, and a second driving diaphragm is pressed in the second driving mounting cavity through a second sealing cover; the driving valve body is provided with a first driving air inlet and a second driving air inlet, and the outer end of the first driving air inlet communicates with a first driving air source. Independent adjustment of air inlet pressure of the signal cavity execution element, the balance cavity, the first working cavity and the second working cavity is achieved, and mutual interference is avoided; the pneumatic amplification structure adjusting capability is improved, the gas circuit design is simplified, and the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of pneumatic amplifiers, and relates to a pneumatic amplifier integrated with a pressure regulating module. Background Art

[0002] The pneumatic amplifiers on the market include four chambers, namely a signal chamber, a balance chamber, a first working chamber and a second working chamber. During the working process, the intake pressures of the signal chamber actuating element and the balance chamber are the same as those of the first and second working chambers. The intake pressures of the signal chamber actuating element and the balance chamber cannot be independently adjusted according to actual requirements, and a pressure regulating module needs to be additionally arranged outside for adjustment, resulting in a complex structure and increased cost. Summary of the Invention

[0003] The purpose of the utility model is to provide a pneumatic amplifier integrated with a pressure regulating module, which can solve the above problems, simplify the gas circuit design and reduce the cost.

[0004] According to the technical solution provided by the present utility model: A pneumatic amplifier integrated with a pressure regulating module includes a driving mechanism and an actuating mechanism connected to each other, and a switching mechanism is provided therebetween; a pressure reducing component is provided on the actuating mechanism; the driving mechanism includes a driving valve body, the driving valve body is provided with a first driving installation chamber and a second driving installation chamber, a first driving diaphragm is press-fitted in the first driving installation chamber through a first sealing cover, and a second driving diaphragm is press-fitted in the second driving installation chamber through a second sealing cover; a first driving air inlet and a second driving air inlet are provided on the driving valve body, the outer end of the first driving air inlet communicates with a first driving air source, and the inner end of the first driving air inlet communicates with a balance chamber, and the balance chamber is located between the first sealing cover and the first driving diaphragm; the outer end of the second driving air inlet communicates with a second driving air source, and the inner end of the second driving air inlet communicates with a second driving chamber, and the second driving chamber is located between the second driving diaphragm and the second sealing cover; the first driving diaphragm wraps the upper part of the first piston, and the second driving diaphragm wraps the upper part of the second piston; the switching mechanism includes a lever, a first guide pin and a first contact pin are respectively provided at the upper and lower ends on one side of the lever, and a second guide pin and a second contact pin are respectively provided at the upper and lower ends on the other side of the lever; guide holes are provided in the first piston and the second piston, and the first guide pin and the second guide pin are respectively located in the guide holes of the first piston and the second piston; the actuating mechanism includes an actuating valve body, a first actuating installation chamber and a second actuating installation chamber are provided in the actuating valve body, a first actuating diaphragm assembly and a first actuating air chamber assembly are provided in the first actuating installation chamber from top to bottom, a first actuating valve core slides in the first actuating diaphragm assembly and the first actuating air chamber assembly, the lower part of the first actuating valve core is connected to the middle part of a first elastic metal sheet, and the outside of the first elastic metal sheet is installed in the first driving installation chamber through a valve seat; a second actuating diaphragm assembly and a second actuating air chamber assembly are provided in the second actuating installation chamber from top to bottom, a second actuating valve core slides in the second actuating diaphragm assembly and the second actuating air chamber assembly, the lower part of the second actuating valve core is connected to the middle part of a second elastic metal sheet, and the outside of the second elastic metal sheet is installed in the second driving installation chamber through an end cover; the end cover is fastened to the actuating valve body with screws.

[0005] As a further improvement of the present utility model, the second sealing cover and the first sealing cover are fastened to the driving valve body with screws.

[0006] As a further improvement of the present utility model, the first contact pin is threadedly connected to the lever.

[0007] As a further improvement of the present utility model, the driving mechanism and the actuating mechanism are connected through a valve rod connecting block, and the middle part of the lever is hinged to the valve rod connecting block through a pin shaft.

[0008] As a further improvement of the present utility model, the second actuator diaphragm assembly includes a second actuator diaphragm, the outside of which is snap-fitted in the second actuator installation cavity. The upper and lower ends of the middle part of the second actuator diaphragm are connected to a second actuator diaphragm air guide ring and a second actuator diaphragm fixed valve port respectively; the first actuator diaphragm assembly has the same structure as the second actuator diaphragm assembly.

[0009] As a further improvement of the present utility model, the second actuator air chamber assembly includes a second actuator air chamber, which is installed at the lower part of the second actuator installation cavity, and a sealing ring is provided between them; a second actuator sealing base is installed in the second actuator air chamber, and a sealing ring is provided between them; the first actuator air chamber assembly has the same structure as the second actuator air chamber assembly.

[0010] As a further improvement of the present utility model, a second actuator upper sealing surface is provided between the top of the second actuator valve core and the middle part of the second actuator diaphragm air guide ring, and a second actuator lower sealing surface is provided between the lower part of the second actuator valve core and the bottom of the second actuator sealing base; similarly, a first actuator upper sealing surface and a first actuator lower sealing surface are provided between the first actuator valve core and the first actuator diaphragm assembly and the first actuator air chamber assembly.

[0011] As a further improvement of the present utility model, the actuator body is provided with a first working air inlet hole and a second working air inlet hole. The outer ends of the first working air inlet hole and the second working air inlet hole are both communicated with a working air source, and the inner ends of the first working air inlet hole and the second working air inlet hole are respectively communicated with a first working air inlet chamber and a second working air inlet chamber. The first working air inlet chamber and the second working air inlet chamber are respectively located at the lower parts of the first actuator installation cavity and the second actuator installation cavity. The upper parts of the first actuator installation cavity and the second actuator installation cavity are provided with a first working air outlet chamber and a second working air outlet chamber. The first working air outlet chamber and the first working air inlet chamber are located on the upper and lower sides of the first actuator lower sealing surface, and the second working air outlet chamber and the second working air inlet chamber are located on the upper and lower sides of the second actuator lower sealing surface; the actuator body is provided with a first working output hole and a second working output hole; the inner end of the first working output hole is communicated with the first working air outlet chamber, and the outer end of the first working output hole is communicated with the first input end of a working device; the inner end of the second working output hole is communicated with the second working air outlet chamber, and the outer end of the second working output hole is communicated with the second input end of the working device.

[0012] As a further improvement of the present utility model, the pressure reducing assembly includes a pressure reducing valve cover, which is installed at the bottom of the valve seat by screws. A valve seat air passage is provided through the valve seat. A support pad, a first gasket, a first diaphragm and a second gasket are sequentially installed in the installation cavity of the pressure reducing valve cover. An adjusting screw is connected to the pressure reducing valve cover and abuts against the support pad. A connecting core and a spring seat connected to the connecting core are installed on the second gasket, and a first spring is sleeved on the spring seat; the first spring abuts against the bottom of the valve seat air passage and the spring seat respectively; sealing rings are installed between the middle part and the outside of the second gasket and the bottom of the valve seat.

[0013] The positive and progressive effects of this application are as follows:

[0014] The utility model realizes the independent adjustment of the intake pressures of the signal chamber actuating element, the balance chamber, and the first and second working chambers, without interference with each other; improves the adjustment ability of the pneumatic amplification structure, simplifies the gas circuit design, and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the utility model.

[0016] Figure 2 It is a top view of the utility model.

[0017] Figure 3 It is a front view of the drive mechanism in the utility model.

[0018] Figure 4 It is a cross-sectional view of the drive mechanism in the utility model.

[0019] Figure 5 It is a schematic structural view of the lever in the utility model.

[0020] Figure 6 It is a front view of the actuator valve body in the utility model.

[0021] Figure 7 It is a cross-sectional view of the actuator valve body in the utility model.

[0022] Figure 8 It is a schematic structural view of the second actuator diaphragm assembly in the utility model.

[0023] Figure 9 It is a schematic structural view of the second actuator air chamber assembly in the utility model.

[0024] Figure 10 It is a cross-sectional view of the pressure reducing assembly in the utility model.

[0025] Figures 1 - 10It includes a driving mechanism 1, a driving valve body 1a, a second driving diaphragm 1b, a first driving diaphragm 1c, a second sealing cover 1d, a first sealing cover 1e, a driving sealing ring 1f, a first driving sealing ring 1g, a balance chamber 1h, a first driving air inlet 1j, a second driving air inlet 1k, a lever 2a, a first contact pin 2b, a second guiding pin 2c, a first guiding pin 2d, a second contact pin 2e, an actuating valve body 3a, a second actuating diaphragm assembly 3b, a second actuating diaphragm fixed valve port 3ba, a second actuating diaphragm air guiding ring 3bb, a second actuating diaphragm 3bc, a second actuating air chamber assembly 3c, a second actuating valve core 3d, a first actuating diaphragm assembly 3f, a first actuating air chamber assembly 3g, a first actuating valve core 3h, a second working air inlet chamber 3q, a second working air outlet chamber 3r, a first working air inlet chamber 3s, a first working air outlet chamber 3t, a pressure reducing assembly 4, a connecting core 4b, an adjusting screw 4c, a supporting pad 4d, a first gasket 4e, a first diaphragm 4f, a second gasket 4g, a spring seat 4i, a pressure reducing valve cover 4j, a first spring 4k, a second piston 8, a pin shaft 9, a first piston 10, etc. Detailed implementation manners

[0026] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in combination with the embodiments.

[0027] In order to enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present utility model described herein. In addition, similar terms such as "including" and "having" mean that in addition to the content already listed in "including" and "having", other content not yet listed can also be "included" and "had"; for example, a process, method, system, product or device that may include a series of steps or units does not have to be limited to those steps or units that have been clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0029] Due to the drawing angle, some components may not be shown, but their positions and connection relationships can be understood according to the text description part.

[0030] As Figure 1 shown, the utility model is a pneumatic amplifier integrated with a pressure regulating module, which includes a driving mechanism 1 and an actuating mechanism 3 connected to each other, and a switching mechanism 2 is arranged between the two; a pressure reducing component 4 is arranged on the actuating mechanism 3.

[0031] As Figures 3 - 4 shown, the driving mechanism 1 includes a driving valve body 1a, the driving valve body 1a is provided with a first driving installation chamber and a second driving installation chamber. A first driving diaphragm 1c is press-fitted in the first driving installation chamber through a first sealing cover 1e, and a second driving diaphragm 1b is press-fitted in the second driving installation chamber through a second sealing cover 1d; a first driving air inlet 1j and a second driving air inlet 1k are arranged on the driving valve body 1a. The outer end of the first driving air inlet 1j communicates with a first driving air source, and the inner end of the first driving air inlet 1j communicates with a balance chamber 1h. The balance chamber 1h is located between the first sealing cover 1e and the first driving diaphragm 1c; the outer end of the second driving air inlet 1k communicates with a second driving air source, and the inner end of the second driving air inlet 1k communicates with a second driving chamber 1i. The second driving chamber 1i is located between the second driving diaphragm 1b and the second sealing cover 1d. The first driving diaphragm 1c wraps the upper part of the first piston 10, and the second driving diaphragm 1b wraps the upper part of the second piston 8.

[0032] The second driving diaphragm 1b and the first driving diaphragm 1c are sequentially installed in the driving valve body 1a. After a driving sealing ring 1f is installed on the second sealing cover 1d, it is pressed into the driving valve body 1a. After a first driving sealing ring 1g is installed on the first sealing cover 1e, it is pressed into the driving valve body 1a. Finally, the second sealing cover 1d and the first sealing cover 1e are fastened to the driving valve body 1a with screws to complete the assembly of the driving mechanism 1.

[0033] As Figure 5 shown, the switching mechanism 2 includes a lever 2a. A first guide pin 2d and a first contact pin 2b are respectively arranged at the upper and lower ends on one side of the lever 2a, and a second guide pin 2c and a second contact pin 2e are respectively arranged at the upper and lower ends on the other side of the lever 2a.

[0034] The first contact pin 2b is threadedly connected to the lever 2a, and the length of the first contact pin 2b extending out can be adjusted. Guide holes are provided in the first piston 10 and the second piston 8, and the first guide pin 2d and the second guide pin 2c are respectively located in the guide holes of the first piston 10 and the second piston 8. The driving mechanism 1 and the actuating mechanism 3 are connected through a valve rod connecting block 5, and the middle part of the lever 2a is hinged to the valve rod connecting block 5 through a pin shaft 9.

[0035] As Figures 6 - 7As shown in the figure, the actuator 3 includes an actuator valve body 3a. A first actuator installation cavity and a second actuator installation cavity are provided in the actuator valve body 3a. In the first actuator installation cavity, a first actuator diaphragm assembly 3f and a first actuator air chamber assembly 3g are provided from top to bottom. A first actuator valve core 3h is slidably provided in the first actuator diaphragm assembly 3f and the first actuator air chamber assembly 3g. The lower part of the first actuator valve core 3h is connected to the middle part of a first elastic metal sheet 3i. The outside of the first elastic metal sheet 3i is installed in the first drive installation cavity through a valve seat 3w. In the second actuator installation cavity, a second actuator diaphragm assembly 3b and a second actuator air chamber assembly 3c are provided from top to bottom. A second actuator valve core 3d is slidably provided in the second actuator diaphragm assembly 3b and the second actuator air chamber assembly 3c. The lower part of the second actuator valve core 3d is connected to the middle part of a second elastic metal sheet 3e. The outside of the second elastic metal sheet 3e is installed in the second drive installation cavity through an end cover 3j. The end cover 3j is fastened to the actuator valve body 3a with screws, and then after a sealing ring is sleeved on, it is fastened to the actuator valve body 3a with screws.

[0036] As Figure 8 shown, the second actuator diaphragm assembly 3b includes a second actuator diaphragm 3bc. The outside of the second actuator diaphragm 3bc is snap-fitted in the second actuator installation cavity. The upper and lower ends of the middle part of the second actuator diaphragm 3bc are connected to a second actuator diaphragm air guide ring 3bb and a second actuator diaphragm fixed valve port 3ba. The second actuator diaphragm air guide ring 3bb, the second actuator diaphragm 3bc, and the second actuator diaphragm fixed valve port 3ba are sequentially sleeved on the second actuator diaphragm air guide ring 3bb. Then, the connecting part of the second actuator diaphragm air guide ring 3bb and the second actuator diaphragm fixed valve port 3ba is riveted and pressed to make the assembly non-loose, completing the assembly of the second actuator diaphragm assembly 3b. The first actuator diaphragm assembly 3f has the same structure as the second actuator diaphragm assembly 3b.

[0037] As Figure 9 shown, the second actuator air chamber assembly 3c includes a second actuator air chamber 3ca. The second actuator air chamber 3ca is installed at the lower part of the second actuator installation cavity, and a sealing ring is provided between them. A second actuator sealing base 3cb is installed in the second actuator air chamber 3ca, and a sealing ring is provided between them. The first actuator air chamber assembly 3g has the same structure as the second actuator air chamber assembly 3c.

[0038] After a sealing ring is sleeved on the second actuator sealing base 3cb, it is press-fitted into the second actuator air chamber 3ca with an interference fit. Then, the sealing ring is sleeved on the second actuator air chamber 3ca again to complete the assembly of the second actuator air chamber assembly 3c.

[0039] A second actuator upper sealing surface adapted to each other is provided between the top of the second actuator valve core 3d and the middle part of the second actuator diaphragm air guide ring 3bb. A second actuator lower sealing surface adapted to each other is provided between the lower part of the second actuator valve core 3d and the bottom of the second actuator sealing base 3cb. Similarly, a first actuator upper sealing surface and a first actuator lower sealing surface are provided between the first actuator valve core 3h and the first actuator diaphragm assembly 3f and the first actuator air chamber assembly 3g.

[0040] The actuator valve body 3a is provided with a first working air inlet hole 3m and a second working air inlet hole 3n. The outer ends of the first working air inlet hole 3m and the second working air inlet hole 3n are both connected to the working air source. The inner ends of the first working air inlet hole 3m and the second working air inlet hole 3n are respectively connected to a first working air inlet chamber 3s and a second working air inlet chamber 3q. The first working air inlet chamber 3s and the second working air inlet chamber 3q are respectively located at the lower parts of a first actuator installation chamber and a second actuator installation chamber. The upper parts of the first actuator installation chamber and the second actuator installation chamber are provided with a first working air outlet chamber 3t and a second working air outlet chamber 3r. The first working air outlet chamber 3t and the first working air inlet chamber 3s are located on the upper and lower sides of a first actuator lower sealing surface. The second working air outlet chamber 3r and the second working air inlet chamber 3q are located on the upper and lower sides of a second actuator lower sealing surface. The actuator valve body 3a is provided with a first working output hole 3l and a second working output hole 3o. The inner end of the first working output hole 3l is connected to the first working air outlet chamber 3t, and the outer end of the first working output hole 3l is connected to a first input end of the working device. The inner end of the second working output hole 3o is connected to the second working air outlet chamber 3r, and the outer end of the second working output hole 3o is connected to a second input end of the working device.

[0041] As Figure 10 shown, the pressure reducing assembly 4 includes a pressure reducing valve cover 4j. The pressure reducing valve cover 4j is installed at the bottom of the valve seat 3w through screws. A valve seat air passage runs through the valve seat 3w. A support pad 4d, a first gasket 4e, a first diaphragm 4f and a second gasket 4g are sequentially installed in the installation chamber of the pressure reducing valve cover 4j. An adjusting screw 4c is connected to the pressure reducing valve cover 4j and abuts against the support pad 4d. A connection core 4b and a spring seat 4i connected to the connection core 4b are installed on the second gasket 4g. A first spring 4k is sleeved on the spring seat 4i. The first spring 4k abuts against the bottom of the valve seat air passage and the spring seat 4i respectively. Sealing rings are installed between the middle part and the outside of the second gasket 4g and the bottom of the valve seat 3w.

[0042] In order to keep the lever 2a stable, springs 12 are installed between the lever 2a and the driving valve body 1a and the actuator valve body 3a respectively.

[0043] The working process of the utility model is as follows:

[0044] The first working air inlet hole 3m and the second working air inlet hole 3n are connected inside the valve body. The external air source can be introduced at any position between the first working air inlet hole 3m and the second working air inlet hole 3n, which is convenient for the design of the external air circuit. The air flow flows into the pressure reducing component 4 through the middle small hole of the valve seat 3w of the valve body component 3. The connecting core 4b in the pressure reducing component 4 overcomes the reaction force of the first diaphragm 4f under the action of the force of the first spring 4k, so that a gap is formed between the first diaphragm 4f and the first gasket 4e. The air flow flows out through the hole of the second gasket 4g to the exhaust hole 3p of the actuator valve body 3a. The actuator valve body 3a is provided with an exhaust hole 3p. The outer end of the exhaust hole 3p is communicated with the atmosphere, and the inner end of the exhaust hole 3p is communicated with the inner cavity of the pressure reducing valve cover 4j. Since the cross-sectional area of the gap is small, the air flow is throttled, so the output pressure and flow rate become smaller, thus achieving the effect of pressure reduction and flow limiting. By changing the screwing depth of the adjusting screw 4c, the force of the first spring 4k changes, causing the size of the gap to change, thereby achieving the adjustment of the output air pressure and flow rate after pressure reduction.

[0045] In this embodiment, the amplifier is used to cooperate with the cylinder. The outer end of the first working output hole 3l is communicated with the first air source input end of the cylinder; the outer end of the second working output hole 3o is communicated with the second air source input end of the cylinder.

[0046] Initial non-aerated state of the amplifier: Under the elastic force of the first elastic metal sheet 3i, the large spherical surface of the first actuator spool 3h fits and closes with the valve port of the first actuator air chamber assembly 3g (i.e., the first actuator lower sealing surface), and the first working air inlet chamber 3s is not communicated with the first working air outlet chamber 3t; under the elastic force of the second elastic metal sheet 3e, the large spherical surface of the second actuator spool 3d fits and closes with the valve port of the second actuator air chamber assembly 3c (i.e., the second actuator lower sealing surface), and the second working air inlet chamber 3q is not communicated with the second working air outlet chamber 3r.

[0047] When the amplifier is connected to the working air source, the working air flow simultaneously flows into the first working air inlet chamber 3s through the first working air inlet hole 3m, flows into the second working air inlet chamber 3q through the second working air inlet hole 3n, and flows into the balance chamber 1h through the first driving air inlet 1j; the pressure in the balance chamber 1h increases to push the first piston 10 to move. The first piston 10 pushes the lever 2 to overcome the acting force of the spring 1213, causing the lever to rotate around the pin shaft 9. The lever 2 pushes the first actuator diaphragm assembly 3f to move, and the first actuator diaphragm assembly 3f pushes the first actuator spool 3h to move, so that the large spherical surface of the first actuator spool 3h opens the valve port of the first actuator air chamber assembly 3g, and the gas flows from the first working air inlet chamber 3s into the first working air outlet chamber 3t and flows out through the first working output hole 3l.

[0048] The signal pressure enters the second driving chamber 1i from the second driving air inlet 1k. When the pressure in the second driving chamber 1i changes from low to high, the piston 8 is pushed to drive the lever 2 to rotate clockwise around the pin shaft 9 against the acting force of the balance chamber, and the lever 2 drives the second actuating diaphragm assembly 3b and the second actuating valve core 3d to move. The valve port between the second actuating valve core 3d and the second actuating air chamber assembly 3c slowly opens, and the gas flows from the second working air inlet chamber 3q into the second working air outlet chamber 3r and flows out from the second working output hole 3o. At the same time, the small spherical surface of the first actuating valve core 3h is slowly disengaged from the valve port (the upper sealing surface of the first actuator) of the first actuating diaphragm assembly 3f, the first working air outlet chamber 3t is communicated with the atmosphere, and the large spherical surface of the first actuating valve core 3h is slowly closed with the valve port (the lower sealing surface of the first actuator) of the first actuating air chamber assembly 3g under the elastic force of the first elastic metal sheet 3i. The first working air inlet chamber 3s is not communicated with the first working air outlet chamber 3t, and the redundant gas in the external actuating mechanism 3 flows into the first working output hole 3l, enters the first working air outlet chamber 3t and is discharged into the atmosphere.

[0049] When the pressure at the second driving air inlet 1k changes from high to low, the lever 2 rotates counterclockwise around the pin shaft 9 under the action of the pressure in the balance chamber 1h, driving the first actuating diaphragm assembly 3f and the first actuating valve core 3h to move, so that the valve port between the first actuating valve core 3h and the first actuating air chamber assembly 3g slowly opens, and the gas flows from the air chamber 3s into the air chamber 3t and flows out from the first working output hole 3l. At the same time, the small spherical surface of the second actuating valve core 3d is slowly disengaged from the valve port (the upper sealing surface of the second actuator) of the second actuating diaphragm assembly 3b, and the large spherical surface of the second actuating valve core 3d is slowly closed with the valve port (the lower sealing surface of the second actuator) of the second actuating air chamber assembly 3c under the elastic force of the second elastic metal sheet 3e. The second working air inlet chamber 3q is not communicated with the second working air outlet chamber 3r, and the redundant gas in the external actuating mechanism 3 flows into the second working output hole 3o, enters the second working air outlet chamber 3r and is discharged into the atmosphere.

[0050] Since the control air source of the second driving chamber 1i is the output air of the current-pneumatic conversion structure, and the input air source of the current-pneumatic conversion structure is the second working air inlet chamber 3q, and the pressure of the second working air inlet chamber 3q is reduced by the pressure reducing assembly 4, and both the pressure and the flow rate are less than the input air source, so for this type of amplifier with respect to the control air source, it is a pneumatic pressure and flow amplifier.

[0051] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention, and the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. A pneumatic amplifier with an integrated pressure regulating module, characterized in that: The invention comprises a driving mechanism (1) and an actuator (3) connected to each other, wherein a switching mechanism (2) is provided between the two; a pressure reducing assembly (4) is provided on the actuator (3); the driving mechanism (1) comprises a driving valve body (1a), wherein the driving valve body (1a) is provided with a first driving installation chamber and a second driving installation chamber, wherein a first driving diaphragm (1c) is press-fitted into the first driving installation chamber via a first sealing cover (1e), and a second driving diaphragm (1b) is press-fitted into the second driving installation chamber via a second sealing cover (1d); a first driving air inlet (1j) and a second driving air inlet (1k) are provided on the driving valve body (1a), wherein an outer end of the first driving air inlet (1j) is connected to a first driving air source, and an inner end of the first driving air inlet (1j) is connected to a balancing chamber (1h), wherein the balancing chamber (1h) is located between the first sealing cover (1e) and the first driving diaphragm (1c); The outer end of the second drive air inlet (1k) is connected to a second drive air source, and the inner end of the second drive air inlet (1k) is connected to a second drive chamber (1i), and the second drive chamber (1i) is located between the second drive diaphragm (1b) and the second sealing cover (1d); the first drive diaphragm (1c) wraps around the upper part of the first piston (10), and the second drive diaphragm (1b) wraps around the upper part of the second piston (8); the switching mechanism (2) comprises a lever (2a), and the upper and lower ends of one side of the lever (2a) are respectively provided with a first guide pin (2d) and a first contact pin (2b), and the upper and lower ends of the other side of the lever (2a) are respectively provided with a second guide pin (2c) and a second contact pin (2e); The first piston (10) and the second piston (8) are provided with guide holes, and the first guide pin (2d) and the second guide pin (2c) are respectively located in the guide holes of the first piston (10) and the second piston (8); the actuator (3) comprises an actuator valve body (3a), the actuator valve body (3a) is provided with a first actuator installation cavity and a second actuator installation cavity, the first actuator installation cavity is provided with a first actuator diaphragm assembly (3f) and a first actuator air chamber assembly (3g) from top to bottom, the first actuator diaphragm assembly (3f) and the first actuator air chamber assembly (3g) are slidably provided with a first actuator valve core (3h), and the lower part of the first actuator valve core (3h) is connected to the first The middle part of the elastic metal sheet (3i) and the outside of the first elastic metal sheet (3i) are installed in the first drive installation chamber through a valve seat (3w); the second execution installation chamber is provided with a second execution diaphragm assembly (3b) and a second execution air chamber assembly (3c) from top to bottom; the second execution diaphragm assembly (3b) and the second execution air chamber assembly (3c) are slidably provided with a second execution valve core (3d); the lower part of the second execution valve core (3d) is connected to the middle part of the second elastic metal sheet (3e); the outside of the second elastic metal sheet (3e) is installed in the second drive installation chamber through an end cover (3j); and the end cover (3j) is fastened to the execution valve body (3a) with screws.

2. The pneumatic amplifier with integrated pressure regulating module according to claim 1, characterized in that: The second sealing cover (1d) and the first sealing cover (1e) are fastened to the driving valve body (1a) by means of screws.

3. The pneumatic amplifier with integrated pressure regulating module according to claim 1, characterized in that: The first contact pin (2b) is threadedly connected to the lever (2a).

4. The pneumatic amplifier with integrated pressure regulating module according to claim 1, characterized in that: The driving mechanism (1) and the actuator (3) are connected via a valve stem connecting block (5), and the middle portion of the lever (2a) is hingedly connected to the valve stem connecting block (5) via a pin shaft (9).

5. The pneumatic amplifier with integrated pressure regulating module according to claim 1, characterized in that: The second actuating diaphragm assembly (3b) comprises a second actuating diaphragm (3bc), the second actuating diaphragm (3bc) being externally clamped in a second actuating mounting cavity, the middle upper and lower ends of the second actuating diaphragm (3bc) being connected to a second actuating diaphragm air guide ring (3bb) and a second actuating diaphragm fixed valve port (3ba); the first actuating diaphragm assembly (3f) and the second actuating diaphragm assembly (3b) have the same structure.

6. The pneumatic amplifier with integrated pressure regulating module as claimed in claim 5, characterized in that: The second execution air chamber assembly (3c) comprises a second execution air chamber (3ca), the second execution air chamber (3ca) being mounted at the lower part of the second execution mounting cavity, with a sealing ring being arranged between the two; a second execution sealing base (3cb) being mounted in the second execution air chamber (3ca), with a sealing ring being arranged between the two; and the first execution air chamber assembly (3g) and the second execution air chamber assembly (3c) having the same structure.

7. The pneumatic amplifier with integrated pressure regulating module as claimed in claim 6, characterized in that: A second upper actuating sealing surface is provided at the top of the second actuating valve core (3d) and the middle of the second actuating diaphragm air guide ring (3bb), and a second lower actuating sealing surface is provided at the bottom of the second actuating valve core (3d) and the bottom of the second actuating sealing base (3cb); Similarly, a first actuating upper sealing surface and a first actuating lower sealing surface are provided between the first actuating valve core (3h), the first actuating diaphragm assembly (3f), and the first actuating air chamber assembly (3g).

8. The pneumatic amplifier with integrated pressure regulating module as claimed in claim 7, characterized in that: The execution valve body (3a) is provided with a first working air inlet hole (3m) and a second working air inlet hole (3n); the outer ends of the first working air inlet hole (3m) and the second working air inlet hole (3n) are both connected to a working air source; the inner ends of the first working air inlet hole (3m) and the second working air inlet hole (3n) are respectively connected to a first working air inlet cavity (3s) and a second working air inlet cavity (3q); the first working air inlet cavity (3s) and the second working air inlet cavity (3q) are respectively located at the lower part of the first execution installation cavity and the second execution installation cavity; the upper part of the first execution installation cavity and the second execution installation cavity is provided with a first working air outlet cavity (3t) and a second working air outlet cavity (3r); the first working The air outlet cavity (3t) and the first working air inlet cavity (3s) are located on the upper and lower sides of the first execution lower sealing surface, and the second working air outlet cavity (3r) and the second working air inlet cavity (3q) are located on the upper and lower sides of the second execution lower sealing surface; the execution valve body (3a) is provided with a first working output hole (3l) and a second working output hole (3o); the inner end of the first working output hole (3l) is connected to the first working air outlet cavity (3t), and the outer end of the first working output hole (3l) is connected to the first input end of the working device; the inner end of the second working output hole (3o) is connected to the second working air outlet cavity (3r), and the outer end of the second working output hole (3o) is connected to the second input end of the working device.

9. The pneumatic amplifier with integrated pressure regulating module according to claim 1, characterized in that: The pressure reducing assembly (4) comprises a pressure reducing valve cover (4j), which is mounted on the bottom of a valve seat (3w) by means of screws; a valve seat air passage is provided through the valve seat (3w); a support pad (4d), a first gasket (4e), a first diaphragm (4f) and a second gasket (4g) are installed in the mounting cavity of the pressure reducing valve cover (4j) in sequence; an adjusting screw (4c) is connected to the pressure reducing valve cover (4j) and abuts against the support pad (4d); a connecting core (4b) and a spring seat (4i) connected to the connecting core (4b) are installed on the second gasket (4g); a first spring (4k) is sleeved on the spring seat (4i); the first spring (4k) abuts against the bottom of the valve seat air passage and the spring seat (4i) respectively; and sealing rings are installed between the middle and outer portion of the second gasket (4g) and the bottom of the valve seat (3w).

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