A multi-tail pipe pulse combustion smoke machine with adjustable particle size

Abstract

The present invention discloses a multi-tail pipe pulse combustion smoke machine with adjustable particle size, comprising a carburetor structure, a combustion chamber structure, a multi-tail pipe structure and a variable particle size nozzle; the carburetor structure is connected to the combustion chamber structure, the combustion chamber structure is connected to the multi-tail pipe structure; the multi-tail pipe structure comprises a plurality of tail pipes, a venturi tube and a medicine feed pipe, the combustion chamber structure is simultaneously connected to a plurality of tail pipes, each tail pipe is connected to a venturi tube, and each venturi tube is connected to the medicine feed pipe through a variable particle size nozzle. The present invention increases the number of tail pipes and utilizes the venturi tube structure, which not only increases the smoke spraying amount of the smoke machine, but also speeds up the running speed of the smoke in the air. At the same time, the nozzle that changes the particle size is a variable particle size nozzle, which can change the particle size and shape of the smoke outlet.

Description

Technical Field

[0001] The invention relates to the field of pulse engine combustion, in particular to a multi-tail pipe pulse combustion smoke machine with adjustable particle size. Background Art

[0002] Ordinary pulse smoke machines use the heat energy and kinetic energy of high-temperature gas generated by the pulse combustion engine and the hot metal surface to cause the liquid oil-soluble liquid to be violently evaporated and atomized at the medicine nozzle of the tail pipe, and use the high-speed airflow to collide with the relatively static air outside, break and diffuse into smoke, move and drift with the natural airflow, and thus diffuse and penetrate into various places in the prevention and control area. However, the amount of smoke released by traditional smoke machines is determined by the flow rate of the medicine supply and the energy of the high-speed airflow inside the tail pipe. The energy transmitted from the combustion chamber to the tail pipe is limited. Simply increasing the flow rate of the liquid medicine will lead to poor airflow breaking effect on the liquid medicine, too large droplets, insufficient atomization and other shortcomings, which cannot meet the prevention and control requirements. Therefore, the amount of smoke released during operation is limited, resulting in limited prevention and control efficiency. At the same time, the speed of the sprayed smoke in the air is slow and easily affected by the air flow rate, which will greatly reduce the accuracy of the smoke machine's application. In addition, after the nozzle of a conventional fog machine is determined, it is impossible to select the corresponding droplet size for different tree species, the wax layer of the leaves, and the tree height, which can easily affect the pesticide settling time, reduce the effective deposition rate of the liquid medicine, and reduce the utilization rate of the pesticide, which will have a significant impact on the prevention and control effect. Considering the severity of current forest pests and diseases and the need to meet the needs of ecological and environmental protection in the application of pesticides, it is very meaningful to design a fog machine that can improve the efficiency of forest pest control by increasing the amount of smoke released during application and its speed in the air. Summary of the invention

[0003] The purpose of the present invention is to provide a multi-tail pipe pulse combustion smoke machine with adjustable particle size to solve the problems of limited smoke release amount and limited air speed of the smoke machine and low adaptability of the droplet particle size to the applied plants when applying pesticides for pest control as mentioned in the above background.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is:

[0005] A multi-tail pipe pulse combustion smoke machine with adjustable particle size, comprising a carburetor structure, a combustion chamber structure, a multi-tail pipe structure and a variable particle size nozzle; the carburetor structure is connected to the combustion chamber structure, and the combustion chamber structure is connected to the multi-tail pipe structure;

[0006] The multi-tail pipe structure includes multiple tail pipes, venturi tubes and a medicine feed pipe. The combustion chamber structure is connected to the multiple tail pipes at the same time, each tail pipe is connected to the venturi tube, and each venturi tube is connected to the medicine feed pipe through a variable particle diameter nozzle.

[0007] As a further improved technical solution of the present invention, the drug inlet pipe is connected to the tail of the second contraction section of the venturi tube.

[0008] As a further improved technical solution of the present invention, the variable particle diameter nozzle comprises a connecting section, a contraction section, a nozzle cross-sectional area adjustment structure and a spray chamber telescopic structure;

[0009] The drug inlet pipe is connected to the top of the connecting section;

[0010] The spray chamber telescopic structure comprises a slide sleeve, a pushing component and a spray chamber body, the connecting section, the contraction section and the pushing component are fixedly connected in sequence, the bottom of the pushing component is connected to the venturi tube, the spray chamber body is located on the inner side of the pushing component and the spray chamber body can slide up and down on the inner side of the pushing component, the pushing component is located on the inner side of the slide sleeve and the slide sleeve can rotate on the outer side of the pushing component, a pin is fixedly connected to the outer surface of the spray chamber body, a strip groove is provided on the pushing component, a spiral groove is provided on the slide sleeve, and one end of the pin extends into the strip groove on the pushing component and the spiral groove on the slide sleeve in sequence;

[0011] The nozzle cross-sectional area adjustment structure comprises a multi-stage telescopic cylinder mechanism, which is connected to the connecting section and is located on the inner side of the connecting section.

[0012] As a further improved technical solution of the present invention, the multi-stage telescopic cylinder mechanism includes a fourth-stage cylinder, a third-stage cylinder, a second-stage cylinder, a first-stage cylinder and a bottom cylinder;

[0013] The top of the four-stage cylinder extends from the through hole at the bottom of the three-stage cylinder into the three-stage cylinder, the top of the four-stage cylinder is connected to the inner wall of the three-stage cylinder in a sliding and sealing manner, and the outer wall of the four-stage cylinder is connected to the through hole at the bottom of the three-stage cylinder in a sliding and sealing manner; the cavity between the top of the four-stage cylinder and the top of the three-stage cylinder is recorded as a three-stage rodless cavity, and the cavity between the top of the four-stage cylinder and the bottom of the three-stage cylinder is recorded as a three-stage rod-containing cavity;

[0014] The top of the third-stage cylinder extends from the through hole at the bottom of the second-stage cylinder into the second-stage cylinder, the top of the third-stage cylinder is slidably sealedly connected to the inner wall of the second-stage cylinder, and the outer wall of the third-stage cylinder is slidably sealedly connected to the through hole at the bottom of the second-stage cylinder; the cavity between the top of the third-stage cylinder and the top of the second-stage cylinder is recorded as the second-stage rodless cavity, and the cavity between the top of the third-stage cylinder and the bottom of the second-stage cylinder is recorded as the second-stage rod-containing cavity;

[0015] The top of the secondary cylinder extends from the through hole at the bottom of the primary cylinder into the primary cylinder, the top of the secondary cylinder is slidably sealedly connected to the inner wall of the primary cylinder, and the outer wall of the secondary cylinder is slidably sealedly connected to the through hole at the bottom of the primary cylinder; the cavity between the top of the secondary cylinder and the top of the primary cylinder is recorded as a primary rodless cavity, and the cavity between the top of the secondary cylinder and the bottom of the primary cylinder is recorded as a primary rod-containing cavity;

[0016] The top of the first-stage cylinder extends from the through hole at the bottom of the bottom cylinder into the bottom cylinder, the top of the first-stage cylinder is connected to the inner wall of the bottom cylinder in a sliding and sealing manner, and the outer wall of the first-stage cylinder is connected to the through hole at the bottom of the bottom cylinder in a sliding and sealing manner; the cavity between the top of the first-stage cylinder and the top of the bottom cylinder is recorded as the bottom cylinder rodless cavity, and the cavity between the top of the first-stage cylinder and the bottom of the bottom cylinder is recorded as the bottom cylinder rod cavity;

[0017] The three-stage cylinder is provided with a three-stage rodless oil port connected with the three-stage rodless cavity and a three-stage rod oil port connected with the three-stage rod cavity. The two-stage cylinder is provided with a two-stage rodless oil port connected with the two-stage rodless cavity and a two-stage rod oil port connected with the two-stage rod cavity. The first-stage cylinder is provided with a first-stage rodless oil port connected with the first-stage rodless cavity and a first-stage rod oil port connected with the first-stage rod cavity. The bottom cylinder is provided with a bottom cylinder rodless oil port connected with the bottom cylinder rodless cavity and a bottom cylinder rod oil port connected with the bottom cylinder rod cavity.

[0018] As a further improved technical solution of the present invention, the three-level rodless oil port and the three-level rod oil port are used to connect to an external hydraulic pump through a solenoid valve, the two-level rodless oil port and the two-level rod oil port are used to connect to an external hydraulic pump through a solenoid valve, the first-level rodless oil port and the first-level rod oil port are used to connect to an external hydraulic pump through a solenoid valve, and the bottom cylinder rodless oil port and the bottom cylinder rod oil port are used to connect to an external hydraulic pump through a solenoid valve.

[0019] As a further improved technical solution of the present invention, a pin is fixedly connected to the upper portion of the outer cylindrical surface of the spray chamber body, and the slide sleeve is used to be connected to an external motor through an external gear.

[0020] As a further improved technical solution of the present invention, the carburetor structure comprises a pump air pipe, a carburetor cover, a one-way air intake diaphragm, a spacer and a carburetor body;

[0021] The carburetor cover is connected to the carburetor body, the middle through hole of the carburetor cover is connected to the pump air pipe, and the surface of the carburetor cover is provided with a plurality of air inlets; the carburetor body is provided with an oil inlet; the spacer is sleeved on the pump air pipe, and the spacer is provided with a plurality of holes;

[0022] A block is fixedly connected to the pump air pipe, which passes through the middle through hole of the carburetor cover and the block contacts the outer surface of the carburetor cover through a flat gasket. A convex ring is arranged around the inner side of the middle through hole of the carburetor cover, and a one-way air intake diaphragm is sleeved on the convex ring and can move on the convex ring. A nut is threadedly connected to the pump air pipe, and the nut locks the spacer on the pump air pipe to the convex ring through a spring washer and a washer, thereby locking the carburetor cover to the block on the pump air pipe through the flat gasket.

[0023] As a further improved technical solution of the present invention, the oil inlet is connected to a pipe joint; and the pump air pipe is connected to an external air pump.

[0024] As a further improved technical solution of the present invention, the carburetor structure also includes an oil needle valve structure, which includes a knob, a spring and an oil needle. A raised interface is provided on the carburetor body, one end of the oil needle extends into the interior of the carburetor body through the through hole in the raised interface and points to the oil inlet, a retaining ring is provided on the outside of the oil needle, a spring is provided on the outside of the oil needle, the spring is located between the retaining ring and the inner plane in the through hole of the raised interface, the outside of the oil needle is slidably and rotatably connected with a knob, the knob is located above the retaining ring and the knob is in contact with the retaining ring, and one end of the knob is threadedly connected to the raised interface; a button is also fixedly connected to the top of the oil needle.

[0025] As a further improved technical solution of the present invention, the end of the oil needle is a cone-shaped structure.

[0026] As a further improved technical solution of the present invention, the carburetor structure is connected to the combustion chamber structure through an intake pipe, a spark plug is provided on the intake pipe, a first pressure-leading pipe is connected to the intake pipe, the first pressure-leading pipe is connected to an external fuel tank, and a float chamber of the external fuel tank is connected to the fuel inlet on the carburetor body through a pipe joint; a second pressure-leading pipe is connected to the combustion chamber structure, the second pressure-leading pipe is connected to an external medicine box, and the external medicine box is connected to the medicine inlet pipe.

[0027] As a further improved technical solution of the present invention, the sum of the cross-sectional areas of all the tail pipes is greater than the cross-sectional area of ​​the intake pipe, and the multiple tail pipes are distributed in a circle.

[0028] As a further improved technical solution of the present invention, the combustion chamber structure includes a pressure cover and a combustion chamber body; the pressure cover and the combustion chamber body are connected by bolts.

[0029] The beneficial effects of the present invention are as follows: in the structure of the present invention, there are multiple tail pipes evenly distributed around the cone outlet of the combustion chamber, and each tail pipe is arranged with a corresponding medicine inlet pipe, which can simultaneously feed liquid into multiple medicine inlets, greatly increasing the amount of medicine supplied. At the same time, a venturi tube structure with a variable cross-section and a variable aperture is added to the tail pipe to increase the airflow velocity at the gas-liquid contact point to supplement the energy requirements of the crushing, ensure the atomization effect of the liquid medicine, increase the speed of the liquid medicine from the tail pipe outlet, and avoid being affected by the surrounding air flow rate, thereby ensuring the targeting and accuracy of the fog machine's application of medicine, and being suitable for large-scale and intensive agricultural and forestry crops, with a high coverage rate and a high utilization rate of pesticides. At the same time, thanks to the variable particle size nozzle at the connection between the tail pipe and the medicine nozzle, the particle size of the smoke released by the pulse combustion fog machine can be adjusted according to the operation requirements, thereby increasing the adsorption rate of the liquid medicine and achieving the expected liquid medicine suspension time.

[0030] When the present invention is started, the air pump supplies air to the carburetor body and pressurizes the fuel tank. The combustible mixed gas flow formed by the carburetor body is ignited and burned by the spark plug. The flame quickly spreads to the entire combustion chamber body, and the pressure in the combustion chamber increases suddenly. The one-way air intake diaphragm on the carburetor is closed, and the hot air flow after combustion can only be discharged from the tail pipe through the nozzle. The pressure in the combustion chamber drops, and the one-way air intake diaphragm is opened to start air intake. As the pressure in the combustion chamber further drops, the air flow in the tail pipe turns from being discharged outward to being inlet into the pipe. The combustible mixed gas that has just entered the combustion chamber body is further compressed and ignited again, forming a periodic intake-combustion-

[0031] The cyclical process of emission. During the working process, the second pressure-introducing pipe continuously introduces the high-pressure airflow greater than the atmospheric pressure in the combustion stage of the combustion chamber into the medicine box. When the medicine switch is turned on, the liquid medicine in the medicine box automatically flows into the tail pipe from the medicine inlet pipe on the tail pipe. In the tail pipe, when the high-temperature, high-frequency, and high-speed turbulent airflow flows through the reduced flow section in the Venturi tube section, the airflow velocity increases, that is, the running speed of the airflow is accelerated, and its flow rate is inversely proportional to the flow section. At the same time, low pressure will be generated near the high-speed airflow, thereby producing an adsorption effect. By utilizing this effect, the flow velocity of the airflow at the tail pipe can be increased, and the low pressure generated by the high speed can also further absorb the liquid medicine in the medicine spray pipe, increase the amount of medicine fed, and finally, under the disturbance of high-temperature, high-frequency, and high-speed airflow, the liquid medicine is cracked, broken, and evaporated into fine droplets, which enter the atmosphere from the tail pipe outlet and condense into visible smoke, which quickly diffuses, rises, and spreads to the prevention and control area. Therefore, the present invention accelerates the running speed of the airflow (smoke) in the air and increases the amount of released smoke, and the medicine liquid is well broken and atomized fully.

[0032] In addition, the present invention can adjust the particle size of the liquid medicine through the variable particle size nozzle at the medicine inlet of the venturi tube according to different tree heights, tree species, and leaf sizes. When the external hydraulic pump is started to provide hydraulic oil to the inside of each level of hydraulic cylinder, the pressure of the hydraulic oil pushes the cylinder bodies of each level in the nozzle to expand and contract. According to the set parameters, the first cylinder movement, the second cylinder movement, the third cylinder movement, the fourth cylinder movement, or the cylinder bodies of each level can realize synchronous movement, so that the cylinder body can expand and contract along the vertical direction of the center axis of the nozzle to adjust the cross-sectional area of ​​the spray chamber and the nozzle. The cross-sectional area at the nozzle is different, and the droplet particle size generated is different. The secondary atomization achieved by the airflow in the venturi tube produces droplets that meet the prevention and control requirements and are suitable for different types of agricultural and forestry crops, and adapt to the requirements of agricultural and forestry crops of different heights for the droplet sedimentation time, which greatly increases the types and adaptability of the device's application objects.

[0033] For different spray chambers and nozzle cross-sectional areas, start the external motor to rotate the slide sleeve of the spray chamber telescopic structure along its axis, the spray chamber body moves obliquely along the spiral groove, and moves vertically along the vertical groove of the push component. According to the set parameters, the spray chamber length is adjusted, the aspect ratio of the spray chamber is changed (the aspect ratio of the spray chamber is the ratio of the total length of the spray chamber telescopic structure to the inner diameter of the spray chamber body), and then the droplet shape and atomization cone angle sprayed at the corresponding nozzle outlet are changed. When a first-stage cylinder is used, the nozzle cross-sectional area is the smallest and the droplet particle size is the smallest. As the length-hole ratio of the spray chamber increases, the atomization cone angle shows a trend of gradually decreasing, and the droplet spray shape is more concentrated. When the number of cylinders used increases, the nozzle cross-sectional area increases and the droplet particle size increases. Therefore, different droplet spray forms can be adjusted according to the type and height of the tree, further enhancing the utilization rate of pesticides and expanding its scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0035] Figure 2 It is a schematic structural diagram of an embodiment of the present invention.

[0036] Figure 3 It is a structural front view of an embodiment of the present invention.

[0037] Figure 4 2 is a top view of the structure of an embodiment of the present invention.

[0038] Figure 5 for Figure 4 Middle AA section view.

[0039] Figure 6 It is a cross-sectional schematic diagram of the connection between the venturi tube and the medicine inlet pipe.

[0040] Figure 7 Schematic diagram of the cross section of the variable particle size nozzle.

[0041] Figure 8 This is the front view of the variable particle size nozzle.

[0042] Fig. 9 It is a side view of the variable particle size nozzle.

[0043] Fig.10 This is a schematic diagram of the structure of the variable particle size nozzle after the slide sleeve is hidden.

[0044] Fig.11 It is a structural schematic diagram of the spray chamber body.

[0045] Fig.12 It is a structural schematic diagram of the nozzle cross-sectional area adjustment structure.

[0046] Fig.13It is a cross-sectional schematic diagram of the nozzle cross-sectional area adjustment structure.

[0047] Fig.14 It is a cross-sectional schematic diagram of the nozzle of the variable particle diameter nozzle in different states.

[0048] Fig.14 (a) is a cross-sectional schematic diagram of the nozzle of the variable particle size nozzle without any cylinder.

[0049] Fig.14 (b) is a cross-sectional schematic diagram of a variable particle size nozzle with a four-stage cylinder at the nozzle.

[0050] Fig.14 (c) is a cross-sectional schematic diagram of a variable particle size nozzle with a three-stage cylinder at the nozzle.

[0051] Fig.14 (d) is a cross-sectional schematic diagram of a variable particle size nozzle with a secondary cylinder at the nozzle.

[0052] Fig.14 (e) is a cross-sectional schematic diagram of a variable particle size nozzle with a first-stage cylinder at the nozzle outlet. DETAILED DESCRIPTION

[0053] The specific embodiments of the present invention are further described below according to the accompanying drawings:

[0054] A multi-tail pipe pulse combustion smoke machine with adjustable particle size, such as Figure 1-2 As shown, it includes a carburetor structure 1, a combustion chamber structure 2, a multi-tail pipe structure and a variable particle diameter nozzle 9; the carburetor structure 1 is connected to the combustion chamber structure 2, and the combustion chamber structure 2 is connected to the multi-tail pipe structure.

[0055] like Figure 1-2 As shown, the multi-tail pipe structure includes multiple tail pipes 3, venturi tubes 4 and drug feed pipes 5. The gas outlet of the combustion chamber structure 2 is connected to multiple tail pipes 3 at the same time, each tail pipe 3 is connected to the venturi tube 4, and each venturi tube 4 is connected to the drug feed pipe 5 through a variable particle size nozzle 9. The number of tail pipes 3, venturi tubes 4, drug feed pipes 5 and variable particle size nozzles 9 is the same. The drug feed pipe 5 is connected to the tail of the second contraction section 401 of the venturi tube 4. The multiple tail pipes 3 are distributed circumferentially and arranged in parallel.

[0056] In this embodiment, Figure 1-5 As shown, the carburetor structure 1 includes a carburetor cover 101 , a pump air pipe 102 , a carburetor body 103 , a one-way air intake diaphragm 106 , and a spacer 107 .

[0057] The carburetor cover 101 is connected to the carburetor body 103, and the connection method can be threaded or bolted. The central through hole of the carburetor cover 101 is connected to the pump air pipe 102, and the surface of the carburetor cover 101 is provided with multiple air inlets 1011; the carburetor body 103 is provided with an oil inlet 1031; the spacer 107 is sleeved on the pump air pipe 102, and the spacer 107 is provided with multiple holes; the spacer 107 and the one-way air intake diaphragm 106 are both located between the carburetor cover 101 and the carburetor body 103.

[0058] like Figure 5 As shown, a block 1021 is fixedly connected to the pump air pipe 102, the pump air pipe 102 passes through the middle through hole of the carburetor cover 101 and the block 1021 contacts the outer surface of the carburetor cover 101 through a flat gasket, a convex ring 1012 is arranged around the inner side of the middle through hole of the carburetor cover 101, a one-way air intake diaphragm 106 is sleeved on the convex ring 1012 and can move on the convex ring 1012, a nut 108 is threadedly connected to the pump air pipe 102, the nut 108 locks the spacer 107 on the pump air pipe 102 on the convex ring 1012 through a spring washer 109 and a washer, and then the carburetor cover 101 is locked to the block 1021 on the pump air pipe 102 through the flat gasket.

[0059] In this embodiment, the one-way air intake diaphragm 106 can move in the small gap between the carburetor cover 101 and the spacer 107, that is, under the action of air pressure, the one-way air intake diaphragm 106 can block all the air intake ports 1011 on the carburetor cover 101 or open the air intake ports 1011 on the carburetor cover 101. When the air intake ports 1011 are opened, the air intake ports 1011 can take in air.

[0060] In this embodiment, the oil inlet 1031 is connected to a pipe joint 104, and the pump air pipe 102 is connected to an external air pump, which is connected to a power source.

[0061] In this embodiment, Figure 5As shown, the carburetor structure 1 also includes an oil needle valve structure 105, which includes a knob 1052, a spring 1054 and an oil needle 1053. A protruding interface 1032 is provided on the carburetor body 103. One end of the oil needle 1053 extends into the interior of the carburetor body 103 through a through hole in the protruding interface 1032 and points to the oil inlet 1031. A retaining ring 10531 is provided on the outside of the oil needle 1053. A spring 1054 is provided on the outside of the oil needle 1053. The spring 1054 is located between the retaining ring 10531 and the inner plane 1033 in the through hole of the raised interface 1032, and there is a gasket between the spring 1054 and the inner plane 1033. The outside of the oil needle 1053 is slidably and rotatably connected to the knob 1052, the knob 1052 is located above the retaining ring 10531 and the knob 1052 is in contact with the retaining ring 10531, and one end of the knob 1052 is threadedly connected to the raised interface 1032; the top of the oil needle 1053 is also fixedly connected to the button 1051.

[0062] In this embodiment, the end of the oil needle 1053 is a cone-shaped structure.

[0063] In this embodiment, the knob 1052 includes a knob body and a plug. The knob body is connected to the plug by a tightening screw. The upper part of the plug is located inside the knob body. The plug is sleeved on the outside of the oil needle 1053. The plug is slidingly and rotatably connected to the oil needle 1053. The plug is in contact with the retaining ring 10531 on the oil needle 1053, and the lower part of the plug is threadedly connected to the raised interface 1032.

[0064] When the oil needle valve structure 105 is in use, the button 1051 can be manually pressed to press the oil needle 1053, and the oil needle 1053 moves downward inside the knob 1052 to block part of the oil inlet 1031, so that the size of the oil inlet 1031 can be manually adjusted to adjust the oil inlet amount. After releasing the hand, the oil needle 1053 is reset under the action of the spring 1054. The knob 1052 can also be rotated to rotate downward in the raised interface 1032, and one end of the knob 1052 presses the retaining ring 10531 of the oil needle 1053 downward, thereby pressing the oil needle 1053 downward, and the oil needle 1053 compresses the spring 1054 downward and moves downward to block part of the oil inlet 1031. After adjusting the desired position, stop rotating the knob 1052. When the knob 1052 is rotated in the opposite direction, the oil needle 1053 moves upward under the action of the spring 1054, so that the size of the oil inlet 1031 can be increased. When oil enters the oil inlet 1031 , under the action of the air rushing into the carburetor body 103 at high speed, the oil mixes with the air inside the carburetor body 103 to form a combustible mixture and flows through the combustion chamber structure 2 .

[0065] In this embodiment, the carburetor structure 1 is connected to the combustion chamber structure 2 through an air intake pipe 6, and the air intake pipe 6 is connected to a first pressure-inducing pipe 7, which is connected to an external oil tank, which is in communication with an external oil tank float chamber, and the external oil tank float chamber is connected to an oil inlet 1031 on a carburetor body 103 through a pipe joint 104; the combustion chamber structure 2 is connected to a second pressure-inducing pipe 8, which is connected to an external medicine box, and the external medicine box is connected to a medicine inlet pipe 5. A spark plug is provided in the air intake pipe 6.

[0066] In this embodiment, the sum of the cross-sectional areas of all the tail pipes 3 is greater than the cross-sectional area of ​​the intake pipe 6 .

[0067] In this embodiment, the combustion chamber structure 2 includes a pressure cover 202 and a combustion chamber body 201; the pressure cover 202 and the combustion chamber body 201 are connected by bolts.

[0068] In this embodiment, Figure 6 As shown, the venturi tube 4 is connected to the drug inlet pipe 5 through the variable particle diameter nozzle 9. The variable particle diameter nozzle 9 includes a connecting section 901, a contraction section 902, a nozzle cross-sectional area adjustment structure and a spray chamber telescopic structure. The drug inlet pipe 5 is connected to the top of the connecting section 901.

[0069] like Figure 6-Figure 11As shown, the spray chamber telescopic structure includes a slide sleeve 903, a pushing component 904 and a spray chamber body 905. The slide sleeve 903, the pushing component 904 and the spray chamber body 905 are arranged in sequence from the outside to the inside. The connecting section 901, the contraction section 902 and the pushing component 904 are fixedly connected in sequence. The bottom of the pushing component 904 is fixedly connected to the reserved opening 4 on the venturi tube 4. The spray chamber body 905 is located on the inner side of the pushing component 904 and the spray chamber body 905 can slide up and down on the inner side of the pushing component 904. The pushing component 904 is located on the inner side of the slide sleeve 903 and the slide sleeve 903 can rotate on the outer side of the pushing component 904. A pin 9051 is fixedly connected to the outer surface of the spray chamber body 905, a strip groove 9041 is provided on the pushing component 904, and a spiral groove 9031 is provided on the slide sleeve 903. One end of the pin 9051 extends into the strip groove 9041 on the pushing component 904 and the spiral groove 9031 on the slide sleeve 903 in sequence. The slide sleeve 903, the pushing component 904 and the spray chamber body 905 are all cylindrical structures. The slide sleeve 903 is clamped between the bottom of the contraction section 902 and the venturi tube 4 and cannot move up and down. The slide sleeve 903 has no connection with the contraction section 902 and the venturi tube 4. The slide sleeve 903 can rotate outside the pushing component 904. Therefore, when the slide sleeve 903 is rotated, the spiral groove 9031 of the slide sleeve 903 rotates, and because the pin shaft 9051 simultaneously extends into the strip groove 9041 on the pushing component 904 and the spiral groove 9031 on the slide sleeve 903, the pin shaft 9051 slides along the spiral groove 9031 and also slides along the strip groove 9041 on the pushing component 904, thereby realizing the up and down sliding of the spray chamber body 905 in the pushing component 904, that is, the up and down extension.

[0070] like Fig.11 As shown, a pin shaft 9051 is fixedly connected to the upper portion of the outer circumferential surface of the spray chamber body 905 .

[0071] The slide sleeve 903 is used to be connected to an external motor through an external gear, and the external motor is connected to a power source. The external gear is connected to the outer circle of the slide sleeve 903, and the output shaft of the external motor is connected to a gear meshing with the external gear. The external motor drives the external gear to rotate, thereby driving the slide sleeve 903 to rotate. When the slide sleeve 903 rotates, the pin shaft 9051 moves along the spiral groove 9031 on the slide sleeve 903 and the strip groove 9041 on the pushing component 904, so that the spray chamber body 905 slides up and down along the pushing component 904.

[0072] like Figure 7 As shown, the nozzle cross-sectional area adjustment structure includes a multi-stage telescopic cylinder mechanism, which is connected to the connecting section 901 and is located on the inner side of the connecting section 901 .

[0073] like Figure 7 As shown, the multi-stage telescopic cylinder mechanism includes a fourth-stage cylinder 910 , a third-stage cylinder 909 , a second-stage cylinder 908 , a first-stage cylinder 907 and a bottom cylinder 906 .

[0074] like Figure 12-13 As shown, the top of the fourth-stage cylinder 910 extends from the through hole at the bottom of the third-stage cylinder 909 into the third-stage cylinder 909, the top of the fourth-stage cylinder 910 is slidably sealed and connected to the inner wall of the third-stage cylinder 909 (the sealing connection method adopts the existing technology, and a piston or a sealing ring connection method can be adopted), and the outer wall of the fourth-stage cylinder 910 is slidably sealed and connected to the through hole at the bottom of the third-stage cylinder 909 (the sealing connection method adopts the existing technology, and a sealing ring connection method can be adopted); the cavity between the top of the fourth-stage cylinder 910 and the top of the third-stage cylinder 909 is recorded as a third-stage rodless cavity, and the cavity between the top of the fourth-stage cylinder 910 and the bottom of the third-stage cylinder 909 is recorded as a third-stage rod-containing cavity.

[0075] The top of the tertiary cylinder 909 extends from the through hole at the bottom of the secondary cylinder 908 into the secondary cylinder 908, the top of the tertiary cylinder 909 is slidably and sealedly connected to the inner wall of the secondary cylinder 908, and the outer wall of the tertiary cylinder 909 is slidably and sealedly connected to the through hole at the bottom of the secondary cylinder 908; the cavity between the top of the tertiary cylinder 909 and the top of the secondary cylinder 908 is recorded as the secondary rodless cavity, and the cavity between the top of the tertiary cylinder 909 and the bottom of the secondary cylinder 908 is recorded as the secondary rod-containing cavity.

[0076] The top of the secondary cylinder 908 extends from the through hole at the bottom of the primary cylinder 907 into the primary cylinder 907, the top of the secondary cylinder 908 is slidingly and sealedly connected to the inner wall of the primary cylinder 907, and the outer wall of the secondary cylinder 908 is slidingly and sealedly connected to the through hole at the bottom of the primary cylinder 907; the cavity between the top of the secondary cylinder 908 and the top of the primary cylinder 907 is recorded as a first-level rodless cavity, and the cavity between the top of the secondary cylinder 908 and the bottom of the primary cylinder 907 is recorded as a first-level rod-containing cavity.

[0077] The top of the first-stage cylinder 907 extends from the through hole at the bottom of the bottom cylinder 906 into the bottom cylinder 906, the top of the first-stage cylinder 907 is slidingly and sealedly connected to the inner wall of the bottom cylinder 906, and the outer wall of the first-stage cylinder 907 is slidingly and sealedly connected to the through hole at the bottom of the bottom cylinder 906; the cavity between the top of the first-stage cylinder 907 and the top of the bottom cylinder 906 is recorded as the bottom cylinder rodless cavity, and the cavity between the top of the first-stage cylinder 907 and the bottom of the bottom cylinder 906 is recorded as the bottom cylinder rod-containing cavity.

[0078] like Fig.13As shown, the three-stage cylinder 909 is provided with a three-stage rodless oil port A4 connected with the three-stage rodless cavity and a three-stage rod oil port B4 connected with the three-stage rod cavity, the two-stage cylinder 908 is provided with a two-stage rodless oil port A3 connected with the two-stage rodless cavity and a two-stage rod oil port B3 connected with the two-stage rod cavity, the first-stage cylinder 907 is provided with a first-stage rodless oil port A2 connected with the first-stage rodless cavity and a first-stage rod oil port B2 connected with the first-stage rod cavity, the bottom cylinder 906 is provided with a bottom cylinder rodless oil port A1 connected with the bottom cylinder rodless cavity and a bottom cylinder rod oil port B1 connected with the bottom cylinder rod cavity.

[0079] The three-stage rodless oil port A4 and the three-stage rod oil port B4 are used to connect to an external hydraulic pump through a solenoid valve, the two-stage rodless oil port A3 and the two-stage rod oil port B3 are used to connect to an external hydraulic pump through a solenoid valve, the first-stage rodless oil port A2 and the first-stage rod oil port B2 are used to connect to an external hydraulic pump through a solenoid valve, and the bottom cylinder rodless oil port A1 and the bottom cylinder rod oil port B1 are used to connect to an external hydraulic pump through a solenoid valve. The external hydraulic pump and the solenoid valve are both connected to a power source.

[0080] The solenoid valve is selected according to the actual situation, and a multi-position multi-way solenoid valve can be selected. Multiple hydraulic pipelines can pass through the medicine inlet pipe 5 to reach the position of each cylinder and then be connected to each oil port. The connection method of the hydraulic pipeline with the fourth cylinder 910, the third cylinder 909, the second cylinder 908, the first cylinder 907 and the bottom cylinder 906 adopts the existing technology and is not within the protection scope of the present invention.

[0081] like Fig.13 As shown, when oil flows into the rodless oil port A1 of the bottom cylinder, as shown by the black arrow, the oil in the rodless cavity of the bottom cylinder pushes the first-stage cylinder 907 to extend, and the oil returns to the rod oil port B1 of the bottom cylinder; when oil flows into the rod oil port B1 of the bottom cylinder, as shown by the red arrow, the oil in the rod cavity of the bottom cylinder pushes the first-stage cylinder 907 to retract, and the oil returns to the rodless oil port A1 of the bottom cylinder; similarly, when oil flows into the first-stage rodless oil port A2, the oil in the first-stage rodless cavity pushes the second-stage cylinder 908 to extend, and the oil returns to the first-stage rod oil port B2; when oil flows into the first-stage rod oil port B2, the oil in the first-stage rod cavity pushes the second-stage cylinder 908 to retract, and the first-stage rodless The rod oil port A2 returns oil; similarly, when the secondary rodless oil port A3 enters oil, the oil in the secondary rodless cavity pushes the third-stage cylinder 909 to extend, and the secondary rod oil port B3 returns oil; when the secondary rod oil port B3 enters oil, the oil in the secondary rod cavity pushes the third-stage cylinder 909 to retract, and the secondary rodless oil port A3 returns oil; similarly, when the third-stage rodless oil port A4 enters oil, the oil in the third-stage rodless cavity pushes the fourth-stage cylinder 910 to extend, and the third-stage rod oil port B4 returns oil; when the third-stage rod oil port B4 enters oil, the oil in the third-stage rod cavity pushes the fourth-stage cylinder 910 to retract, and the third-stage rodless oil port A4 returns oil. Each cylinder body of the present invention can independently realize telescopic action.

[0082] The bottom cylinder 906 of this embodiment is fixedly connected to the connecting section 901 through a support rod. The inner cavity of the connecting section 901 is cylindrical, the inner cavity of the contraction section 902 is a truncated cone with a taper, and the inner cavity of the spray chamber telescopic structure is cylindrical. The bottom of the bottom cylinder 906 of the present invention is flush with the bottom of the connecting section 901. When the present invention is started, the air pump is used to pump air to supply gas to the carburetor body 103, and the gas then passes through the first pressure-inducing pipe 7 at the intake pipe 6, and the external oil tank is pressurized through the first pressure-inducing pipe 7 and the pipeline. After the gasoline in the float chamber of the external oil tank is pressurized, it enters the interior of the carburetor body 103 through the pipe joint 104 and the oil inlet 1031. The external air pump rushes the external air into the interior of the carburetor body 103 at a high speed through the pump air pipe 102. The gasoline is mixed with air inside the carburetor body 103 to form a combustible mixed gas (containing gasoline particles) and flows through the combustion chamber structure 2, and is ignited and burned by the spark plug. The flame quickly spreads to the entire combustion chamber structure 2, and the pressure in the combustion chamber structure 2 increases suddenly. The generated high-pressure gas makes the one-way air intake diaphragm 106 close to the carburetor cover 101 to seal the air intake 1011 on the carburetor cover 101. The hot air flow after combustion can only be discharged from the nozzle from the tail pipe 3. The pressure in the combustion chamber structure 2 drops, and the one-way air intake diaphragm 106 opens the air intake 1011 on the carburetor cover 101. The air intake 1011 on the carburetor cover 101 begins to enter the air, that is, the carburetor body 103 begins to inhale, and the gasoline in the carburetor body 103 is mixed with the air entering through the air intake 1011 to form a combustible mixture; as the pressure in the combustion chamber structure 2 further drops, the air flow in the tail pipe 3 changes from being discharged outward to being inhaled into the pipe, and the combustible mixture just entering the combustion chamber structure 2 is further compressed and ignited again, forming a periodic intake-combustion-emission cycle. During the working process, the second pressure-introducing pipe 8 on the combustion chamber structure 2 continuously introduces the high-pressure airflow greater than the atmospheric pressure during the combustion stage in the combustion chamber structure 2 into the external medicine box. When the dosing switch on the pipeline between the external medicine box and the second pressure-introducing pipe 8 is turned on, the medicine liquid in the external medicine box automatically flows from the medicine inlet pipe 5 through the variable particle size nozzle 9 into the Venturi tube 4. In the tail pipe 3, when the high-temperature, high-frequency, and high-speed turbulent airflow flows through the reduced flow section in the Venturi tube 4, the airflow velocity increases, and its flow velocity is inversely proportional to the flow section. At the same time, low pressure will be generated near the high-speed airflow, thereby producing an adsorption effect. By utilizing this effect, the velocity of the airflow in the venturi tube 4 can be increased, and the low pressure generated by the high speed can further absorb the liquid medicine in the medicine feeding tube 5, thereby increasing the amount of medicine fed. Finally, under the disturbance of high temperature, high frequency and high speed airflow, the liquid medicine is cracked, broken and evaporated into fine droplets, which enter the atmosphere from the outlet of the venturi tube 4, condense into visible smoke, and quickly diffuse, rise and spread to the prevention and control area. After the first combustion, the external air pump can stop supplying air to the pump air pipe 102 (specifically set according to actual conditions), and the required gas in the subsequent cycle combustion process is realized by air intake through the air inlet 1011 on the carburetor cover 101.During the subsequent cyclic combustion process, the high-pressure airflow greater than the atmospheric pressure during the combustion stage can also be introduced into the external oil tank through the first pressure-introducing pipe 7 to pressurize the external oil tank, thereby allowing the float chamber of the external oil tank to supply oil to the oil inlet 1031 through the pipe joint 104.

[0083] In the structure of the present invention, a plurality of tail pipes 3 are evenly distributed on the circumference of the combustion chamber structure 2, and each tail pipe 3 is connected to the medicine inlet pipe 5 through a variable particle size nozzle 9, and multiple medicine inlet pipes 5 can be fed with liquid at the same time, which greatly increases the medicine supply. At the same time, a venturi tube 4 with a variable cross-section and a variable aperture is added to the tail pipe 3 to increase the air flow velocity at the contact point between gas and liquid to supplement the energy requirement of crushing, ensure the atomization effect of the medicine liquid, increase the speed of the medicine liquid from the outlet of the tail pipe 3, and avoid being affected by the surrounding air flow velocity, thereby ensuring the targeting and accuracy of the fog machine's application of medicine. The fog machine is suitable for large-scale and intensive agricultural and forestry crops, with high coverage and high pesticide utilization rate.

[0084] When the present invention is used, after the liquid medicine enters the connecting section 901 in the variable particle diameter nozzle 9 from the liquid inlet pipe, the liquid medicine passes through the connecting section 901, the contraction section 902 and the spray chamber telescopic structure in sequence and is sprayed out along the tangent direction of the nozzle outlet. After the high-speed liquid medicine jet is subjected to shear stress under the action of centrifugal force, it is dispersed and atomized and broken into a thin film to form a fine water mist.

[0085] In addition, this embodiment can adjust the particle size of the liquid medicine through the variable particle size nozzle 9 at the medicine inlet for different tree heights, tree species, and leaf sizes. When the external hydraulic pump is started to provide hydraulic oil to the inside of each level of hydraulic cylinder, the pressure of the hydraulic oil pushes the cylinder bodies of each level to expand and contract. According to the set parameters, the first cylinder 907, the second cylinder 908, the third cylinder 909, and the fourth cylinder 910 can be moved (that is, the cylinder bodies of each level move separately) or the cylinder bodies of each level move synchronously, so that the cylinder bodies can be expanded and contracted in the vertical direction along the central axis of the nozzle to adjust the cross-sectional area of ​​the spray chamber and the nozzle. The cross-sectional area at the nozzle is different, and the droplet particle size generated is different. Then, through the secondary atomization of the hot air flow in the venturi tube 4, droplets that meet the prevention and control requirements and are suitable for different types of agricultural and forestry crops are generated, and the requirements of agricultural and forestry crops of different heights for the droplet settling time are met, which greatly increases the types and adaptability of the device's application objects.

[0086] The spray chamber telescopic structure of this embodiment can adjust its own length and change the aspect ratio of the spray chamber. The nozzle cross-sectional area adjustment structure can adjust the nozzle cross-sectional area. The spray chamber telescopic structure and the nozzle cross-sectional area adjustment structure can be operated separately or simultaneously to achieve adjustment. The specific adjustment method can be changed according to actual needs. Fig.14 As shown, it is a cross-sectional schematic diagram of the nozzle in different states. Fig.14 The blank areas in the spray cavity body 905 in (a) to (e) are schematic diagrams of the cross-sectional shape of the spray nozzle. Fig.14(a) is a schematic diagram of the nozzle cross-section shape when all cylinders are not extended and the nozzle cross-section shape is a through hole. At this time, the nozzle cross-section area is the largest, and the through hole sprays directly in the form of a jet liquid column. Fig.14 (b) is a schematic diagram of the nozzle cross section after the four-stage cylinder 910 extends to the nozzle. Fig.14 (c) is a schematic diagram of the nozzle cross section after the third-stage cylinder 909 is extended to the nozzle (the fourth-stage cylinder 910 is retracted to the shortest position). Fig.14 (d) is a schematic diagram of the nozzle cross section after the second-stage cylinder 908 is extended to the nozzle (the third-stage cylinder 909 and the fourth-stage cylinder 910 are both retracted to the shortest position). Fig.14 (e) is a schematic diagram of the nozzle cross section after the first-stage cylinder 907 is extended to the nozzle (the second-stage cylinder 908, the third-stage cylinder 909, and the fourth-stage cylinder 910 are all retracted to the shortest position). Fig.14 In (a)-(e), the nozzle cross-sectional area decreases successively, and the droplet size decreases successively. Fig.14 When the annular opening is formed in (b)-(e), the liquid medicine is in the form of a jet liquid film.

[0087] When facing different cross-sectional areas of the spray chamber and the nozzle, the external motor is started to rotate the slide sleeve 903 along its axis, and the pin shaft 9051 connected to the spray chamber body 905 moves obliquely along the spiral groove 9031 of the slide sleeve 903, and moves vertically along the strip groove 9041 of the pushing component 904, and the length of the spray chamber telescopic structure is adjusted according to the set parameters, and the aspect ratio of the spray chamber is changed, thereby changing the droplet spray shape and atomization cone angle of the corresponding nozzle outlet cross-sectional area. When using the first-stage cylinder 907, as Fig.14 As shown in (e), the nozzle cross-sectional area (or the nozzle hole area) is the smallest, and the droplet size is the smallest. As the aspect ratio of the spray chamber increases, the atomization cone angle tends to gradually decrease, and the droplet spray pattern becomes more concentrated. When the number of cylinders used increases (that is, the outer diameter of the cylinder used becomes smaller), the nozzle cross-sectional area increases, and the droplet size increases. Therefore, the different droplet spray patterns can be adjusted according to the type and height of the tree, further enhancing the utilization rate of the pesticide and expanding its scope of application. The nozzle mentioned in the present invention is located at the outlet end of the spray chamber telescopic structure (that is, Figure 7 The cross-sectional area of ​​the nozzle is the cross-sectional area of ​​the portion of the outlet end of the spray chamber telescopic structure that is not blocked, and the mentioned spray chamber aspect ratio is the ratio of the total length of the spray chamber telescopic structure to the inner diameter of the spray chamber body 905.

[0088] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A multi-tail pipe pulse combustion smoke machine with adjustable particle size, characterized in that: It comprises a carburetor structure (1), a combustion chamber structure (2), a multi-tail pipe structure and a variable particle diameter nozzle (9); the carburetor structure (1) is connected to the combustion chamber structure (2), and the combustion chamber structure (2) is connected to the multi-tail pipe structure; The multi-tail pipe structure comprises a plurality of tail pipes (3), a venturi tube (4) and a medicine feed pipe (5); the combustion chamber structure (2) is connected to the plurality of tail pipes (3) at the same time, each tail pipe (3) is connected to the venturi tube (4), and each venturi tube (4) is connected to the medicine feed pipe (5) via a variable particle diameter nozzle (9); The variable particle diameter nozzle (9) comprises a connecting section (901), a contraction section (902), a nozzle cross-sectional area adjustment structure and a spray chamber telescopic structure; The drug inlet pipe (5) is connected to the top of the connecting section (901); The spray chamber telescopic structure comprises a slide groove sleeve (903), a pushing component (904) and a spray chamber body (905); the connecting section (901), the contraction section (902) and the pushing component (904) are fixedly connected in sequence; the bottom of the pushing component (904) is connected to the venturi tube (4); the spray chamber body (905) is located on the inner side of the pushing component (904) and the spray chamber body (905) can slide up and down on the inner side of the pushing component (904); the pushing component (904) is located on the slide groove sleeve (903) and ... pushing component (904) is fixedly connected to the venturi tube (4); the pushing component (904) is fixedly connected to the venturi tube (4); the pushing component (904) is fixedly connected to the venturi tube (4); the pushing component (904) is fixedly connected to the venturi tube (4); the pushing component (904) is fixedly connected to the venturi tube (4); the pushing component (904) is fixedly connected to the venturi tube (4); the pushing component (904) is fixedly connected to the venturi tube (4); the pushing component (904) is fixed 03) and the slide sleeve (903) can rotate on the outside of the pushing component (904), the outer surface of the spray chamber body (905) is fixedly connected with a pin shaft (9051), the pushing component (904) is provided with a strip groove (9041), the slide sleeve (903) is provided with a spiral groove (9031), and one end of the pin shaft (9051) extends into the strip groove (9041) on the pushing component (904) and the spiral groove (9031) on the slide sleeve (903) in sequence; The nozzle cross-sectional area adjustment structure comprises a multi-stage telescopic cylinder mechanism, the multi-stage telescopic cylinder mechanism is connected to the connecting section (901), and the multi-stage telescopic cylinder mechanism is located on the inner side of the connecting section (901).

2. The particle size adjustable multi-tail pipe pulse combustion smoke machine according to claim 1, characterized in that: The drug inlet pipe (5) is connected to the tail of the second contraction section (401) of the venturi tube (4).

3. The multi-tail pipe pulse combustion smoke machine with adjustable particle size according to claim 1, characterized in that: The multi-stage telescopic cylinder mechanism comprises a fourth-stage cylinder (910), a third-stage cylinder (909), a second-stage cylinder (908), a first-stage cylinder (907) and a bottom cylinder (906); The top of the fourth-stage cylinder (910) extends from the through hole at the bottom of the third-stage cylinder (909) into the third-stage cylinder (909), the top of the fourth-stage cylinder (910) is connected to the inner wall of the third-stage cylinder (909) in a sliding and sealing manner, and the outer wall of the fourth-stage cylinder (910) is connected to the through hole at the bottom of the third-stage cylinder (909) in a sliding and sealing manner; the cavity between the top of the fourth-stage cylinder (910) and the top of the third-stage cylinder (909) is recorded as a third-stage rodless cavity, and the cavity between the top of the fourth-stage cylinder (910) and the bottom of the third-stage cylinder (909) is recorded as a third-stage rod-carrying cavity; The top of the third-stage cylinder (909) extends from the through hole at the bottom of the second-stage cylinder (908) into the second-stage cylinder (908), the top of the third-stage cylinder (909) is connected to the inner wall of the second-stage cylinder (908) in a sliding and sealing manner, and the outer wall of the third-stage cylinder (909) is connected to the through hole at the bottom of the second-stage cylinder (908) in a sliding and sealing manner; the cavity between the top of the third-stage cylinder (909) and the top of the second-stage cylinder (908) is recorded as a second-stage rodless cavity, and the cavity between the top of the third-stage cylinder (909) and the bottom of the second-stage cylinder (908) is recorded as a second-stage rod-containing cavity; The top of the secondary cylinder (908) extends from the through hole at the bottom of the primary cylinder (907) into the primary cylinder (907), the top of the secondary cylinder (908) is connected to the inner wall of the primary cylinder (907) in a sliding and sealing manner, and the outer wall of the secondary cylinder (908) is connected to the through hole at the bottom of the primary cylinder (907) in a sliding and sealing manner; the cavity between the top of the secondary cylinder (908) and the top of the primary cylinder (907) is recorded as a primary rodless cavity, and the cavity between the top of the secondary cylinder (908) and the bottom of the primary cylinder (907) is recorded as a primary rod-containing cavity; The top of the first-stage cylinder (907) extends from the through hole at the bottom of the bottom cylinder (906) into the bottom cylinder (906), the top of the first-stage cylinder (907) is connected to the inner wall of the bottom cylinder (906) in a sliding and sealing manner, and the outer wall of the first-stage cylinder (907) is connected to the through hole at the bottom of the bottom cylinder (906) in a sliding and sealing manner; the cavity between the top of the first-stage cylinder (907) and the top of the bottom cylinder (906) is recorded as the bottom cylinder rodless cavity, and the cavity between the top of the first-stage cylinder (907) and the bottom of the bottom cylinder (906) is recorded as the bottom cylinder rod cavity; The three-stage cylinder (909) is provided with a three-stage rodless oil port (A4) connected to the three-stage rodless chamber and a three-stage rod oil port (B4) connected to the three-stage rod chamber; the two-stage cylinder (908) is provided with a two-stage rodless oil port (A3) connected to the two-stage rodless chamber and a two-stage rod oil port (B3) connected to the two-stage rod chamber; the first-stage cylinder (907) is provided with a first-stage rodless oil port (A2) connected to the first-stage rodless chamber and a first-stage rod oil port (B2) connected to the first-stage rod chamber; the bottom cylinder (906) is provided with a bottom cylinder rodless oil port (A1) connected to the bottom cylinder rodless chamber and a bottom cylinder rod oil port (B1) connected to the bottom cylinder rod chamber.

4. The particle size adjustable multi-tail pipe pulse combustion smoke machine according to claim 3, characterized in that: The three-stage rodless oil port (A4) and the three-stage rod oil port (B4) are used to connect to an external hydraulic pump through a solenoid valve, the two-stage rodless oil port (A3) and the two-stage rod oil port (B3) are used to connect to an external hydraulic pump through a solenoid valve, the first-stage rodless oil port (A2) and the first-stage rod oil port (B2) are used to connect to an external hydraulic pump through a solenoid valve, and the bottom cylinder rodless oil port (A1) and the bottom cylinder rod oil port (B1) are used to connect to an external hydraulic pump through a solenoid valve.

5. The multi-tail pipe pulse combustion smoke machine with adjustable particle size according to claim 1, characterized in that: A pin shaft (9051) is fixedly connected to the upper portion of the outer cylindrical surface of the spray chamber body (905), and the slide sleeve (903) is used to be connected to an external motor via an external gear.

6. The particle size adjustable multi-tail pipe pulse combustion smoke machine according to claim 1, characterized in that: The carburetor structure (1) comprises a pump air pipe (102), a carburetor cover (101), a one-way air intake diaphragm (106), a spacer (107) and a carburetor body (103); The carburetor cover (101) is connected to the carburetor body (103); a pump air pipe (102) is connected to a central through hole of the carburetor cover (101); a plurality of air inlets (1011) are provided on the surface of the carburetor cover (101); an oil inlet (1031) is provided on the carburetor body (103); a spacer (107) is sleeved on the pump air pipe (102); and a plurality of holes are provided on the spacer (107); The pump air pipe (102) is fixedly connected with a stopper (1021), the pump air pipe (102) passes through the middle through hole of the carburetor cover (101), and the stopper (1021) contacts the outer surface of the carburetor cover (101) through a flat gasket. A convex ring (1012) is arranged around the inner side of the middle through hole of the carburetor cover (101), and a one-way air intake diaphragm (106) is sleeved on the convex ring (1012) and can move on the convex ring (1012). A nut (108) is threadedly connected with the pump air pipe (102), and the nut (108) locks the spacer (107) on the pump air pipe (102) on the convex ring (1012) through a spring washer (109) and a gasket, thereby locking the carburetor cover (101) and the stopper (1021) on the pump air pipe (102) through the flat gasket.

7. The particle size adjustable multi-tail pipe pulse combustion smoke machine according to claim 6, characterized in that: The oil inlet (1031) is connected to a pipe joint (104); and the pump air pipe (102) is connected to an external air pump.

8. The particle size adjustable multi-tail pipe pulse combustion smoke machine according to claim 6, characterized in that: The carburetor structure (1) further comprises an oil needle valve structure (105), wherein the oil needle valve structure (105) comprises a knob (1052), a spring (1054) and an oil needle (1053). A protruding interface (1032) is provided on the carburetor body (103). One end of the oil needle (1053) extends into the interior of the carburetor body (103) through a through hole in the protruding interface (1032) and points to the oil inlet (1031). A retaining ring (10531) is provided on the exterior of the oil needle (1053). The outer sleeve of the oil needle (1053) is provided with a retaining ring (10531). A spring (1054) is provided, and the spring (1054) is located between the inner plane (1033) in the through hole of the retaining ring (10531) and the raised interface (1032). The outside of the oil needle (1053) is slidably and rotatably connected to a knob (1052), and the knob (1052) is located above the retaining ring (10531) and the knob (1052) is in contact with the retaining ring (10531). One end of the knob (1052) is threadedly connected to the raised interface (1032); the top of the oil needle (1053) is also fixedly connected to a button (1051).

9. The particle size adjustable multi-tail pipe pulse combustion smoke machine according to claim 8, characterized in that: The end of the oil needle (1053) is a cone-shaped structure.

10. The particle size adjustable multi-tail pipe pulse combustion smoke machine according to claim 1, characterized in that: The carburetor structure (1) is connected to the combustion chamber structure (2) via an intake pipe (6), a spark plug is provided on the intake pipe (6), a first pressure-inducing pipe (7) is connected to the intake pipe (6), the first pressure-inducing pipe (7) is connected to an external oil tank, and the float chamber of the external oil tank is connected to an oil inlet (1031) on the carburetor body (103) via a pipe joint (104); a second pressure-inducing pipe (8) is connected to the combustion chamber structure (2), the second pressure-inducing pipe (8) is connected to an external medicine box, and the external medicine box is connected to the medicine inlet pipe (5).

11. The particle size adjustable multi-tail pipe pulse combustion smoke machine according to claim 10, characterized in that: The sum of the cross-sectional areas of all the tail pipes (3) is greater than the cross-sectional area of ​​the intake pipe (6), and the plurality of tail pipes (3) are distributed in a circumferential manner.

12. The multi-tail pipe pulse combustion smoke machine with adjustable particle size according to claim 1, characterized in that: The combustion chamber structure (2) comprises a gland (202) and a combustion chamber body (201); the gland (202) and the combustion chamber body (201) are connected via bolts.

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