Pneumatic diaphragm type spraying machine

Abstract

The invention discloses a pneumatic diaphragm type spraying machine, which relates to the technical field of spraying machines and comprises a mounting seat, an outer shell, supporting legs, a double-diaphragm mechanism, a pneumatic driving mechanism, an exhaust cavity, a discharge pipe, a spraying pipe, an air compressor, a handle, a fixed seat and wheels. The device is reasonable and simple in structure, low in production cost and convenient to install, the device can be conveniently moved to a proper working position through the handle and the wheels, the supporting legs provide stable supporting, the requirements of different spraying scenes are met, the abrasion-resistant layer outside the connecting shaft reduces abrasion, the service life is prolonged, and the sound insulation plate outside the air compressor reduces noise; through alternate work of the first diaphragm and the second diaphragm in the double-diaphragm mechanism, continuous suction and output of paint are achieved, and continuity and stability of spraying are guaranteed; the right side of the exhaust cavity is funnel-shaped, so that a coating and a gas mixture can stably enter the spraying pipe at a uniform flow rate, the coating is sprayed more uniformly, and the spraying quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of spraying machines, in particular to a pneumatic diaphragm spraying machine. Background Art

[0002] In the field of coating, the development of spraying equipment has gone through several stages to meet the needs of different industries and application scenarios for coating quality, efficiency and diversified coating adaptability. As one of the important types, the emergence and development of pneumatic diaphragm sprayers have specific technical backgrounds and market driving factors. With the continuous development of industries such as industrial production and architectural decoration, the requirements for coating spraying are increasing. Traditional spraying methods such as manual brushing and rolling are inefficient and difficult to ensure the uniformity and quality stability of the coating. Some early spraying equipment, such as simple pressure sprayers, have improved the spraying efficiency to a certain extent, but there are many limitations. For example, the delivery capacity of high-viscosity coatings is limited, and it is easy to clog the spray gun and pipeline, resulting in interruption of the spraying operation and affecting the construction progress and quality. At the same time, in different application scenarios, there are many types of coatings with different properties. Some coatings contain a large amount of solid particles, additives or have a high viscosity, which poses a higher challenge to the performance of the spraying equipment. In this case, pneumatic diaphragm sprayers came into being. It uses compressed air to drive the diaphragm movement and transports the paint through the extrusion effect of the diaphragm. This working principle gives it certain advantages when handling high-viscosity paints and paints containing special ingredients. Summary of the invention

[0003] The purpose of the present invention is to provide a pneumatic diaphragm sprayer to solve the above problems, which solves the problems of low efficiency of traditional spraying methods, difficulty in ensuring coating uniformity and quality stability, and limited ability of early simple pressure sprayers to transport high-viscosity coatings and easy clogging of spray guns and pipelines.

[0004] In order to solve the above problems, the present invention provides a technical solution: a pneumatic diaphragm sprayer, comprising a mounting seat, an outer shell, a support leg, a double diaphragm mechanism, a pneumatic drive mechanism, an exhaust chamber, a discharge pipe, a spray pipe, an air compressor, a handle, a fixed seat and wheels; the top of the mounting seat is fixedly connected to the outer shell, the lower left side of the mounting seat is fixedly connected to the support leg, the lower right side of the mounting seat is fixedly connected to the fixed seat, and the upper right side of the mounting seat is fixedly connected to the handle; wheels are movably connected to both sides of the fixed seat; a double diaphragm is provided inside the left side of the outer shell Mechanism, a pneumatic drive mechanism is provided in the central interior of the outer shell, and the left transmission shaft of the pneumatic drive mechanism is connected to the right input end of the double diaphragm mechanism, an air compressor is fixedly connected to the right side of the outer shell, and the air compressor outlet is connected to the inlet of the pneumatic drive mechanism; the exhaust chamber is provided on the upper right side of the outer shell, the lower left side of the exhaust chamber is communicated with the upper exhaust hole of the pneumatic drive mechanism, a discharge pipe is fixedly connected to the center of the exhaust chamber, and the left opening of the discharge pipe is connected to the upper right output port of the double diaphragm mechanism, and the right opening of the exhaust chamber is connected to the inlet of the spray pipe.

[0005] Preferably, the specific structure of the double diaphragm mechanism includes an annular cavity, a one-way output valve, a diaphragm cavity, a diaphragm, a fixed sleeve, a one-way input valve, a connecting rod, an input pipe, a one-way input valve, a slider, a connecting rod, a fixed sleeve, a diaphragm, a diaphragm cavity, a one-way output valve, an output port, a turntable, a connecting shaft and a longitudinal groove; the annular cavity is arranged inside the central periphery of the outer shell, an output port is provided on the upper right side of the annular cavity, and the output port is connected to the left opening of the discharge pipe; the diaphragm cavity is arranged inside the lower left side of the outer shell, a fixed sleeve is fixedly connected to the upper side of the diaphragm cavity, and a diaphragm is fixedly connected to the lower side opening of the fixed sleeve, the lower right side outlet of the diaphragm cavity is connected to the inside of the annular cavity through a one-way output valve, and the lower left side inlet of the diaphragm cavity is connected to the one-way input valve outlet; the diaphragm cavity II is arranged inside the upper left side of the outer shell, and the lower side of the diaphragm cavity II is fixedly connected to a fixed sleeve 2. A diaphragm 2 is fixedly connected to the upper opening of the fixed sleeve 2. The upper right outlet of the diaphragm cavity 2 is connected to the inside of the annular cavity through the one-way output valve 2. The upper left inlet of the diaphragm cavity 2 is connected to the outlet of the one-way input valve 2; the right side outlet of the input pipe is connected to the inlets of the one-way input valve 1 and the one-way input valve 2; the outer side of the slider is vertically movably connected to the central inner side of the left side of the outer shell, and a longitudinal groove is opened in the central right side of the slider. A connecting rod 1 is fixedly connected to the lower side of the slider, and a lower side end of the connecting rod is fixedly connected to the upper center of the diaphragm 1. A connecting rod 2 is fixedly connected to the upper side of the slider, and the upper side end of the connecting rod 2 is fixedly connected to the lower center of the diaphragm 2; the turntable is movably connected to the right side of the central inner side of the left side of the outer shell, and the right center of the turntable is connected to the left transmission shaft of the pneumatic drive mechanism. A connecting shaft is fixedly connected to the left edge of the turntable, and the outer side of the connecting shaft is movably connected to the longitudinal groove.

[0006] Preferably, the center line of the connecting rod 1 and the center line of the connecting rod 2 are located on the same straight line.

[0007] Preferably, a wear-resistant layer is provided on the outer surface of the connecting shaft.

[0008] Preferably, the specific structure of the pneumatic drive mechanism includes a transmission shaft, a large gear 1, a gear box, a small gear 1, a large gear 2, an exhaust hole, an inner cavity, an impeller, an impeller shaft, an air inlet hole and a small gear 2; the gear box is fixedly connected to the inner part of the central left side of the outer shell, the inner part of the lower left side of the gear box is movably connected with a transmission shaft, and the outer part of the right side of the transmission shaft is fixedly connected with a large gear 1; the small gear 1 is movably connected to the inner part of the upper left side of the gear box, and the lower side of the small gear is connected to the large gear 1; the large gear 2 is movably connected to the inner part of the upper right side of the gear box, and the left central axis of the large gear 2 is fixedly connected to the center of the small gear 1 ; The inner cavity is arranged inside the right side of the center of the outer shell, the impeller shaft is movably connected to the center of the inner cavity, and the left side of the impeller shaft is movably connected to the inside of the lower right side of the gear box, an air inlet hole is opened on the lower side of the inner cavity, and the inlet hole entrance is connected to the air compressor outlet, an exhaust hole is opened on the upper side of the inner cavity, and the upper outlet of the exhaust hole is connected to the left side of the exhaust cavity; the impeller is movably connected in the center of the inner cavity, and the center of the impeller is fixedly connected to the outside of the impeller shaft; the pinion gear 2 is movably connected to the inside of the lower right side of the gear box, the center of the pinion gear 2 is fixedly connected to the left side of the impeller shaft, and the upper side of the pinion gear 2 is connected to the large gear 2.

[0009] Preferably, the axis of the transmission shaft is parallel to the axis of the impeller shaft.

[0010] Preferably, the right side of the exhaust cavity is funnel-shaped.

[0011] Preferably, a sound insulation board is provided on the outside of the air compressor.

[0012] The beneficial effects of the present invention are as follows: (1) The present invention has a reasonable and simple structure, low production cost, and easy installation. The handle and wheels can be easily moved to a suitable working position. The support feet provide stable support to meet the needs of different spraying scenarios. The wear-resistant layer on the outside of the connecting shaft reduces wear and extends the service life. The sound insulation board on the outside of the air compressor reduces noise.

[0013] (2) The present invention realizes continuous suction and output of paint by alternating the operation of diaphragm 1 and diaphragm 2 in the double diaphragm mechanism, thereby ensuring the continuity and stability of spraying. The meshing transmission of the gears in the pneumatic drive mechanism and the rotation of the impeller are utilized to realize power transmission and utilization of compressed air, thereby providing a power source for spraying and ensuring efficient operation of the equipment.

[0014] (3) The right side of the exhaust chamber of the present invention is in the shape of a funnel, which helps the paint and gas mixture to flow into the spray pipe evenly and stably, making the paint spraying more uniform and improving the spraying quality. The various components work together to achieve efficient and stable operation of the pneumatic diaphragm sprayer, which can meet the spraying requirements of different paints. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 for Figure 1 sectional view of .

[0017] Figure 3 It is a structural schematic diagram of the double diaphragm mechanism.

[0018] Figure 4 for Figure 3 Side view of the center turntable.

[0019] Figure 5 for Figure 3 Side view of the center slider.

[0020] Figure 6 It is a structural schematic diagram of the pneumatic drive mechanism.

[0021] 1-mounting seat; 2-outer shell; 3-supporting foot; 4-double diaphragm mechanism; 5-pneumatic drive mechanism; 6-exhaust chamber; 7-discharge pipe; 8-spraying pipe; 9-air compressor; 10-handle; 11-fixed seat; 12-wheel; 41-annular chamber; 42-one-way output valve 1; 43-diaphragm chamber 1; 44-diaphragm 1; 45-fixed sleeve 1; 46-one-way input valve 1; 47-connecting rod 1; 48-input pipe; 49-one-way input valve 2; 410-slider ;411-connecting rod 2;412-fixing sleeve 2;413-diaphragm 2;414-diaphragm cavity 2;415-one-way output valve 2;416-output port;417-turntable;418-connecting shaft;419-longitudinal groove;51-transmission shaft;52-large gear 1;53-gear box;54-small gear 1;55-large gear 2;56-exhaust hole;57-inner cavity;58-impeller;59-impeller shaft;510-intake hole;511-small gear 2. DETAILED DESCRIPTION

[0022] like Figure 1 and Figure 2As shown, this specific embodiment adopts the following technical scheme: a pneumatic diaphragm sprayer, including a mounting base 1, an outer shell 2, a support leg 3, a double diaphragm mechanism 4, a pneumatic drive mechanism 5, an exhaust chamber 6, a discharge pipe 7, a spray pipe 8, an air compressor 9, a handle 10, a fixed base 11 and a wheel 12; the top of the mounting base 1 is fixedly connected to the outer shell 2, the lower left side of the mounting base 1 is fixedly connected to the support leg 3, the lower right side of the mounting base 1 is fixedly connected to the fixed base 11, and the upper right side of the mounting base 1 is fixedly connected to the handle 10; both sides of the fixed base 11 are movably connected to the wheels 12; the left side of the outer shell 2 is provided with a There is a double diaphragm mechanism 4, and a pneumatic drive mechanism 5 is provided in the central interior of the outer shell 2, and the left transmission shaft of the pneumatic drive mechanism 5 is connected to the right input end of the double diaphragm mechanism 4, and an air compressor 9 is fixedly connected to the right side of the outer shell 2, and the outlet of the air compressor 9 is connected to the inlet of the pneumatic drive mechanism 5; the exhaust chamber 6 is provided on the upper right side of the outer shell 2, and the lower left side of the exhaust chamber 6 is connected to the upper exhaust hole of the pneumatic drive mechanism 5, and a discharge pipe 7 is fixedly connected to the center of the exhaust chamber 6, and the left opening of the discharge pipe 7 is connected to the upper right output port of the double diaphragm mechanism 4, and the right opening of the exhaust chamber 6 is connected to the inlet of the spray pipe 8.

[0023] like Figures 3 to 5As shown, the specific structure of the double diaphragm mechanism 4 includes an annular cavity 41, a one-way output valve 1 42, a diaphragm cavity 1 43, a diaphragm 1 44, a fixed sleeve 1 45, a one-way input valve 1 46, a connecting rod 1 47, an input pipe 48, a one-way input valve 2 49, a slider 410, a connecting rod 2 411, a fixed sleeve 2 412, a diaphragm 2 413, a diaphragm cavity 2 414, a one-way output valve 2 415, an output port 416, a rotating disk 417, a connecting shaft 418 and a longitudinal groove 419; the annular cavity 41 is arranged inside the central periphery of the outer shell 2, and the upper right side of the annular cavity 41 is provided with a The output port 416 is connected to the left opening of the discharge pipe 7; the diaphragm cavity 1 43 is arranged inside the lower left side of the outer shell 2, the upper side of the diaphragm cavity 1 43 is fixedly connected to a fixing sleeve 1 45, and the lower opening of the fixing sleeve 45 is fixedly connected to a diaphragm 1 44, the lower right outlet of the diaphragm cavity 1 43 is connected to the inside of the annular cavity 41 through a one-way output valve 1 42, and the lower left inlet of the diaphragm cavity 1 43 is connected to the outlet of the one-way input valve 1 46; the diaphragm cavity 2 414 is arranged inside the upper left side of the outer shell 2, and the lower side of the diaphragm cavity 2 414 is fixedly connected to the There is a fixed sleeve 412, and a diaphragm 413 is fixedly connected to the upper opening of the fixed sleeve 412. The upper right outlet of the diaphragm cavity 414 is connected to the inside of the annular cavity 41 through a one-way output valve 415. The upper left inlet of the diaphragm cavity 414 is connected to the outlet of the one-way input valve 49; the right outlet of the input pipe 48 is connected to the inlets of the one-way input valve 46 and the one-way input valve 49; the outside of the slider 410 is vertically movably connected to the left center of the outer shell 2, and a longitudinal groove 419 is opened in the center of the right side of the slider 410. The slider 41 0 is fixedly connected to the lower side with a connecting rod 47, and the lower end of the connecting rod 47 is fixedly connected to the upper center of the diaphragm 44, the upper side of the slider 410 is fixedly connected to the connecting rod 2 411, and the upper end of the connecting rod 2 411 is fixedly connected to the lower center of the diaphragm 2 413; the turntable 417 is movably connected to the right side of the left center inside the outer shell 2, the right center of the turntable 417 is connected to the left transmission shaft of the pneumatic drive mechanism 5, and the left edge of the turntable 417 is fixedly connected with a connecting shaft 418, and the outside of the connecting shaft 418 is movably connected to the inside of the longitudinal groove 419.

[0024] The center line of the connecting rod 1 47 and the center line of the connecting rod 2 411 are located on the same straight line; and a wear-resistant layer is provided on the outer surface of the connecting shaft 418 .

[0025] like Figure 6As shown, the specific structure of the pneumatic drive mechanism 5 includes a transmission shaft 51, a large gear 1 52, a gear box 53, a small gear 1 54, a large gear 2 55, an exhaust hole 56, an inner cavity 57, an impeller 58, an impeller shaft 59, an air inlet hole 510 and a small gear 2 511; the gear box 53 is fixedly connected to the inner left side of the central portion of the outer shell 2, the transmission shaft 51 is movably connected to the inner left lower side of the gear box 53, and the large gear 1 52 is fixedly connected to the outer right side of the transmission shaft 51; the small gear 1 54 is movably connected to the inner left upper side of the gear box 53, and the lower side of the small gear 1 54 is connected to the large gear 1 52; the large gear 2 55 is movably connected to the inner right upper side of the gear box 53, and the left central axis of the large gear 2 55 is fixedly connected to the center of the small gear 1 54 ; The inner cavity 57 is arranged inside the central right side of the outer shell 2, and the impeller shaft 59 is movably connected to the center of the inner cavity 57, and the left side of the impeller shaft 59 is movably connected to the inside of the lower right side of the gear box 53, and an air inlet hole 510 is opened on the lower side of the inner cavity 57, and the inlet hole 510 entrance is connected to the outlet of the air compressor 9, and an exhaust hole 56 is opened on the upper side of the inner cavity 57, and the upper outlet of the exhaust hole 56 is connected to the left side of the exhaust chamber 6; the impeller 58 is movably connected to the center of the inner cavity 57, and the center of the impeller 58 is fixedly connected to the outside of the impeller shaft 59; the pinion gear 2 511 is movably connected to the inside of the lower right side of the gear box 53, and the center of the pinion gear 2 511 is fixedly connected to the left side of the impeller shaft 59, and the upper side of the pinion gear 2 511 is connected to the large gear 2 55.

[0026] Among them, the axis of the transmission shaft 51 is parallel to the axis of the impeller shaft 59; the right side of the exhaust chamber 6 is funnel-shaped, which helps the mixture of paint and gas to flow into the spray pipe 8 evenly and stably; the outside of the air compressor 9 is provided with a sound insulation board to reduce the noise generated during operation.

[0027] The use state of the present invention is as follows: the present invention has a reasonable and simple structure, low production cost, and convenient installation. When in use, first move the sprayer to a suitable working position through the handle 10 and the wheel 12, and the support leg 3 plays a role of stable support. Make sure that the air compressor 9 is connected to the power supply (if it is a movable air compressor with its own power supply) or connected to an external air source, and connect the paint to be sprayed to the paint input port of the sprayer through the input pipe 48. The paint enters the diaphragm cavity 1 43 and the diaphragm cavity 2 41 through the one-way input valve 1 46 and the one-way input valve 2 49. 4. At this time, the diaphragm 1 44 and the diaphragm 2 413 are in the initial position. Under the restriction of the fixing sleeve 1 45 and the fixing sleeve 2 412, the diaphragm cavity 1 43 and the diaphragm cavity 2 414 are separated into two relatively independent spaces. Then the air compressor 9 is turned on, and the compressed air enters the inner cavity 57 through the air inlet 510. The air in the inner cavity 57 drives the impeller 58 to rotate, and the impeller 58 drives the impeller shaft 59 to rotate. On the one hand, the impeller shaft 59 drives the small gear 2 511 to rotate, and the small gear 2 511 meshes with the large gear 2 55 to rotate the large gear 2 55.The large gear 2 55 drives the small gear 1 54 to rotate through its left central axis, and the small gear 1 54 meshes with the large gear 1 52, thereby driving the large gear 1 52 to rotate, and the large gear 1 52 finally drives the transmission shaft 51 to rotate. On the other hand, the compressed air generated by the air compressor 9 also provides a power source for subsequent spraying. When the transmission shaft 51 rotates, the turntable 417 connected to the left side rotates accordingly, and the connecting shaft 418 at the left edge of the turntable 417 moves in the longitudinal groove 419, thereby driving the slider 410 to reciprocate up and down. When the slider 410 moves upward, the diaphragm 1 is pulled by the connecting rod 1 47. 44 is deformed upward, the space in the diaphragm cavity 43 increases, the pressure decreases, and the paint enters the diaphragm cavity 43 through the one-way input valve 46 under the action of external pressure. At the same time, when the slider 410 moves upward, the diaphragm 413 is pushed to deform upward through the connecting rod 411, the space in the diaphragm cavity 414 decreases, the pressure increases, and the paint is squeezed into the annular cavity 41 through the one-way output valve 415. When the slider 410 moves downward, the diaphragm 44 is pulled downward by the connecting rod 47, the space in the diaphragm cavity 43 decreases, the pressure increases, and the paint is squeezed into the annular cavity 41 through the one-way output valve 42. The coating enters the annular cavity 41, and at this time, the diaphragm cavity 2 414 sucks the coating through the one-way input valve 2 49, and the cycle continues. The diaphragm 1 44 and the diaphragm 2 413 work alternately to achieve continuous suction and output of the coating. The coating entering the annular cavity 41 enters the discharge pipe 7 from the output port 416 under the action of pressure, and then the coating enters the exhaust cavity 6 along the discharge pipe 7, and is mixed with the gas discharged from the pneumatic drive mechanism 5 in the exhaust cavity 6 (the gas enters the exhaust cavity 6 from the exhaust hole 56). The mixed coating and gas enter the spray pipe 8 from the right opening of the exhaust cavity 6. Since the right side of the exhaust cavity 6 is in a funnel shape, it is helpful for the coating to be discharged. The mixture of material and gas flows into the spray tube 8 at a uniform and stable flow rate. Finally, the operator holds the spray tube 8 and sprays the paint evenly on the surface of the object to be painted. During the entire use process, the mounting seat 1 plays the role of overall support and fixing each component. The outer shell 2 protects the internal mechanism. The wear-resistant layer on the outer surface of the connecting shaft 418 reduces the wear between the longitudinal groove 419 and prolongs the service life. The sound insulation board outside the air compressor 9 can reduce the noise generated during operation. Through the coordinated work of various components, the pneumatic diaphragm sprayer is realized to operate efficiently and stably to meet different spraying needs. ;

[0028] The control method in the present invention is to start manually or control through existing automation technology. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and wiring layout in detail.

[0029] In the description of the invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0030] In the invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation", "screw-on" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the invention according to the specific circumstances.

[0031] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the invention. Without departing from the spirit and scope of the invention, the invention may have various changes and improvements, which shall fall within the scope of the invention to be protected. The scope of protection of the invention shall be defined by the attached claims and their equivalents.

Claims

1. A pneumatic diaphragm sprayer, characterized in that: It comprises a mounting base (1), an outer shell (2), a support foot (3), a double diaphragm mechanism (4), a pneumatic drive mechanism (5), an exhaust chamber (6), a discharge pipe (7), a spray pipe (8), an air compressor (9), a handle (10), a fixing base (11) and wheels (12); The top of the mounting seat (1) is fixedly connected to an outer shell (2), the lower left side of the mounting seat (1) is fixedly connected to a support foot (3), the lower right side of the mounting seat (1) is fixedly connected to a fixing seat (11), and the upper right side of the mounting seat (1) is fixedly connected to a handle (10); Wheels (12) are movably connected to both sides of the fixing seat (11); A double diaphragm mechanism (4) is provided inside the left side of the outer shell (2), a pneumatic drive mechanism (5) is provided inside the center of the outer shell (2), and a transmission shaft on the left side of the pneumatic drive mechanism (5) is connected to an input end on the right side of the double diaphragm mechanism (4), an air compressor (9) is fixedly connected to the right side of the outer shell (2), and an outlet of the air compressor (9) is connected to an inlet of the pneumatic drive mechanism (5); The exhaust chamber (6) is arranged on the upper right side of the outer shell (2), the lower left side of the exhaust chamber (6) is connected to the exhaust hole on the upper side of the pneumatic drive mechanism (5), a discharge pipe (7) is fixedly connected to the center of the exhaust chamber (6), and the left opening of the discharge pipe (7) is connected to the upper right output port of the double diaphragm mechanism (4), and the right opening of the exhaust chamber (6) is connected to the inlet of the spray pipe (8).

2. The pneumatic diaphragm sprayer according to claim 1, characterized in that: The specific structure of the double diaphragm mechanism (4) comprises an annular cavity (41), a one-way output valve (42), a diaphragm cavity (43), a diaphragm (44), a fixed sleeve (45), a one-way input valve (46), a connecting rod (47), an input pipe (48), a one-way input valve (49), a slider (410), a connecting rod (411), a fixed sleeve (412), a diaphragm (413), a diaphragm cavity (414), a one-way output valve (415), an output port (416), a rotating disk (417), a connecting shaft (418) and a longitudinal groove (419); The annular cavity (41) is arranged inside the central periphery of the outer shell (2), and an output port (416) is opened on the upper right side of the annular cavity (41), and the output port (416) is connected to the left opening of the discharge pipe (7); The diaphragm cavity 1 (43) is arranged inside the lower left side of the outer shell (2); the upper side of the diaphragm cavity 1 (43) is fixedly connected to a fixing sleeve 1 (45), and the lower opening of the fixing sleeve 1 (45) is fixedly connected to a diaphragm 1 (44); the lower right outlet of the diaphragm cavity 1 (43) is connected to the interior of the annular cavity (41) through a one-way output valve 1 (42); the lower left inlet of the diaphragm cavity 1 (43) is connected to the outlet of a one-way input valve 1 (46); The second diaphragm cavity (414) is arranged inside the upper left side of the outer shell (2); the lower side of the second diaphragm cavity (414) is fixedly connected to the second fixing sleeve (412); and the upper opening of the second fixing sleeve (412) is fixedly connected to the second diaphragm (413); the upper right outlet of the second diaphragm cavity (414) is connected to the inside of the annular cavity (41) through the second one-way output valve (415); and the upper left inlet of the second diaphragm cavity (414) is connected to the outlet of the second one-way input valve (49); The right outlet of the input pipe (48) is connected to the inlets of the one-way input valve 1 (46) and the one-way input valve 2 (49); The outside of the slider (410) is vertically movably connected to the center of the left side of the outer shell (2); a longitudinal groove (419) is provided in the center of the right side of the slider (410); a connecting rod 1 (47) is fixedly connected to the lower side of the slider (410); and the lower end of the connecting rod 1 (47) is fixedly connected to the center of the upper side of the diaphragm 1 (44); and a connecting rod 2 (411) is fixedly connected to the upper side of the slider (410); and the upper end of the connecting rod 2 (411) is fixedly connected to the center of the lower side of the diaphragm 2 (413); The turntable (417) is movably connected to the right side of the center of the left side of the outer shell (2); the center of the right side of the turntable (417) is connected to the left transmission shaft of the pneumatic drive mechanism (5); a connecting shaft (418) is fixedly connected to the left edge of the turntable (417), and the outside of the connecting shaft (418) is movably connected to the inside of the longitudinal groove (419).

3. The pneumatic diaphragm sprayer according to claim 2, characterized in that: The center line of the connecting rod 1 (47) and the center line of the connecting rod 2 (411) are located on the same straight line.

4. The pneumatic diaphragm sprayer according to claim 2, characterized in that: A wear-resistant layer is provided on the outer surface of the connecting shaft (418).

5. The pneumatic diaphragm sprayer according to claim 1, characterized in that: The specific structure of the pneumatic drive mechanism (5) includes a transmission shaft (51), a large gear 1 (52), a gear box (53), a small gear 1 (54), a large gear 2 (55), an exhaust hole (56), an inner cavity (57), an impeller (58), an impeller shaft (59), an air inlet hole (510) and a small gear 2 (511); The gear box (53) is fixedly connected to the inner part of the central left side of the outer shell (2); the lower left side of the gear box (53) is movably connected to the transmission shaft (51), and the right side of the transmission shaft (51) is fixedly connected to the outer part of the large gear one (52); The small gear 1 (54) is movably connected to the interior of the upper left side of the gear box (53), and the lower side of the small gear 1 (54) is connected to the large gear 1 (52); The large gear 2 (55) is movably connected to the inside of the upper right side of the gear box (53), and the left central axis of the large gear 2 (55) is fixedly connected to the center of the small gear 1 (54); The inner cavity (57) is arranged inside the central right side of the outer shell (2); the inner cavity (57) is movably connected to an impeller shaft (59) in the center, and the left side of the impeller shaft (59) is movably connected to the right lower side of the gear box (53); an air inlet (510) is provided on the lower side of the inner cavity (57), and the inlet of the air inlet (510) is connected to the outlet of the air compressor (9); an exhaust hole (56) is provided on the upper side of the inner cavity (57), and the upper outlet of the exhaust hole (56) is connected to the left side of the exhaust cavity (6); The impeller (58) is movably connected to the center of the inner cavity (57), and the center of the impeller (58) is fixedly connected to the outside of the impeller shaft (59); The small gear 2 (511) is movably connected to the inside of the lower right side of the gear box (53), the center of the small gear 2 (511) is fixedly connected to the left outer side of the impeller shaft (59), and the upper side of the small gear 2 (511) is connected to the large gear 2 (55).

6. The pneumatic diaphragm sprayer according to claim 5, characterized in that: The axis of the transmission shaft (51) is parallel to the axis of the impeller shaft (59).

7. The pneumatic diaphragm sprayer according to claim 1, characterized in that: The right side of the exhaust cavity (6) is in a funnel shape.

8. The pneumatic diaphragm sprayer according to claim 1, characterized in that: A sound insulation board is provided outside the air compressor (9).

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