A complex airflow generating device

Abstract

The present invention discloses a complex airflow generating device, which belongs to the technical field of cyclone furnaces, and includes a cyclone furnace body, an air intake pipeline, an ejector, a feeding device, a Roots blower, a first side centrifugal blower, a first side bellows, a second side centrifugal blower, a second side bellows, an exhaust pipeline and a dust collector, wherein the output end of the Roots blower is connected to the input end of the feeding device, the output end of the feeding device is connected to the input end of the ejector, and the output end of the ejector is connected to the cyclone furnace body through the air intake pipeline. The beneficial effects of the present invention are: the air flow in each air duct can be monitored in real time and a curve can be displayed, the manual control valve can realize the control of the flow in different air ducts, the detection requirements inside the simulated cyclone furnace can be realized, the functionality is strong, not only the test cost is reduced, but also the test accuracy and test efficiency are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of cyclone furnaces, and in particular to a complex airflow generating device. Background Art

[0002] Design and build cyclone burner system, boiler air-powder configuration system and furnace integrated physical model test system, provide a physical model test research platform for cyclone burner system aerodynamics and air-powder flow distribution characteristics test, cyclone burner system aerodynamic characteristics of different low NOx technology systems and cyclone combustion boiler system full-range aerodynamic characteristics test.

[0003] The existing material model research equipment is relatively simple. Multiple sets of test equipment are often required to simulate the working of material models in different pressure environments or under different working conditions. This not only increases the cost of the test, but also is inconvenient to install. The calibration of parameters between different devices is more complicated, and the powder adding process is inconvenient, which can easily cause powder spillage, greatly increasing the difficulty of implementing the test. Summary of the invention

[0004] The purpose of the present invention is to propose a complex airflow generating device in order to solve the above-mentioned technical problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A complex airflow generating device comprises a cyclone furnace body, an air intake pipeline, an ejector, a feeding device, a Roots blower, a first side centrifugal fan, a first side bellows, a second side centrifugal fan, a second side bellows, an exhaust pipeline and a dust collector, wherein the output end of the Roots blower is connected with the input end of the feeding device, the output end of the feeding device is connected with the input end of the ejector, the output end of the ejector is respectively connected with the cyclone furnace body through the air intake pipeline, the first side centrifugal fan cooperates with the first side bellows, the second side centrifugal fan cooperates with the second side bellows, the first side bellows and the second side bellows are respectively connected with the cyclone furnace body through the air intake pipeline, and the cyclone furnace body is connected with the dust collector through the exhaust pipeline.

[0007] As a further description of the above technical solution:

[0008] It also includes a cyclone furnace bracket for installing the cyclone furnace body, an air intake pipeline bracket for installing the air intake pipeline, and an injector bracket for installing the injector. The cyclone furnace bracket is provided with a cyclone furnace fixing member for fixing the cyclone furnace body. A flow meter and a valve are respectively provided on the air intake pipeline. The connecting ends of the air intake pipeline are respectively connected through a first flexible connection. A muffler is provided at the output end of the Roots blower. The output end of the Roots blower is connected through a second flexible connection.

[0009] As a further description of the above technical solution:

[0010] The feeding device includes an air powder box and an air powder box bracket arranged at the lower end of the air powder box, one side of the air powder box is penetrated by an air inlet pipe matched with the output end of the Roots blower, the other side of the air powder box is penetrated by an exhaust pipe matched with the input end of the injector, the bottom surface of the air powder box is penetrated by a fixed barrel, a piston is slidably arranged inside the fixed barrel, two support plates are symmetrically arranged at the lower end of the air powder box, a movable plate is slidably arranged between the two support plates, a motor is fixedly arranged at the upper end of the movable plate, a screw rod is provided at the output end of the motor through a coupling, the upper end of the screw rod is rotatably connected with the lower end of the piston, a connecting assembly matched with the screw rod is provided inside the fixed barrel, a storage box is fixedly arranged at the upper end of the air powder box, a discharge pipe for adding powder into the fixed barrel is provided at the lower end of the storage box, and a feeding assembly matched with the fixed barrel is provided at the lower end of the discharge pipe.

[0011] As a further description of the above technical solution:

[0012] The feeding assembly includes an elastic rope and a fixed plate for closing the upper end of the fixed barrel, a discharge pipe that is in sliding contact with the inner wall of the discharge pipe is fixedly provided on the upper end of the fixed plate, a solenoid valve that cooperates with the discharge pipe is provided in the middle of the fixed plate, a movable plate is provided on the sliding sleeve outside the discharge pipe, the upper end of the movable plate is connected to the top surface of the air powder box through an elastic rope, the lower end of the movable plate is connected to the upper end of the fixed plate through a connecting spring, a touch pressure switch is provided on the upper end of the fixed plate, and the touch pressure switch is electrically connected to the solenoid valve.

[0013] As a further description of the above technical solution:

[0014] The connecting assembly includes a rotating seat rotatably arranged inside the fixed barrel and a hollow tube fixedly arranged at the lower end of the rotating seat, the hollow tube is rotatably connected to the bottom surface of the fixed barrel through a bearing, a mounting groove is provided on one side of the rotating seat, a clamping block is slidably provided in the mounting groove, the cross-section of the clamping block is trapezoidal, the clamping block is connected to the inner wall of the mounting groove through a compression spring, a clamping groove matching the clamping block is provided on the inner wall of the fixed barrel, a pressure block is fixedly provided at the upper end of the clamping block, an extrusion rod for extruding the pressure block so that the compression spring is compressed is provided at the lower end of the piston, an annular groove matching the extrusion rod is provided on the upper end surface of the rotating seat, and two pull ropes are symmetrically and movably penetrated by the side wall of the fixed barrel, the upper ends of the two pull ropes respectively movably penetrate the fixed plate and are fixedly connected to the lower end of the movable plate, and the lower ends of the two pull ropes are respectively fixedly connected to the outer surface of the hollow tube.

[0015] As a further description of the above technical solution:

[0016] Two mounting seats are symmetrically arranged at the lower end of the fixed barrel, and a first guide roller and a second guide roller cooperating with the pull rope are rotatably arranged inside the two mounting seats respectively.

[0017] As a further description of the above technical solution:

[0018] Slide blocks are fixedly arranged on both sides of the movable plate, and sliding grooves for sliding connection of the slide blocks are arranged on the surfaces of the two support plates.

[0019] As a further description of the above technical solution:

[0020] A ball is rotatably embedded at the lower end of the extrusion rod.

[0021] As a further description of the above technical solution:

[0022] The piston is in a square shape.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] In the present invention, the air flow in each air duct can be monitored in real time and a curve can be displayed. The flow in different air ducts can be controlled by manually controlling the valve, and the detection requirements inside the simulated cyclone furnace can be realized. The functionality is strong, which not only reduces the test cost, but also greatly improves the test accuracy and test efficiency.

[0025] In the present invention, a fixed barrel, a piston, a screw, a motor, a movable plate, a support plate and a connecting component are provided so that the screw rotates to drive the piston to move up and down. During the upward movement of the piston, the powder added in the fixed barrel can be pushed upward and discharged from the exhaust pipe along with the wind. By providing a clamping block, a pressure block, an extrusion rod, a rotating seat, a hollow tube, a pull rope, a movable plate, a fixed plate and an elastic rope, the screw is reversed to drive the piston to move downward and reset, so as to prepare for the fixed barrel to be loaded with powder. Then the screw continues to reverse, so that when the pull rope is initially stretched, the fixed plate is pressed on the opening at the upper end of the fixed barrel to achieve closure. When the pull rope continues to be stretched, the touch pressure switch is squeezed to open the solenoid valve, thereby achieving the effect of adding powder into the fixed barrel and effectively avoiding powder leakage during the adding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The overall structural schematic diagram of the cyclone furnace provided according to an embodiment of the present invention is shown;

[0027] Figure 2 The appearance diagram of the feeding device provided according to the embodiment of the present invention is shown;

[0028] Figure 3 A cross-sectional view of the structure of the air powder box provided according to an embodiment of the present invention is shown;

[0029] Figure 4 A schematic structural diagram of a feeding assembly provided according to an embodiment of the present invention is shown;

[0030] Figure 5 A partial structural cross-sectional view of a feeding assembly provided according to an embodiment of the present invention is shown;

[0031] Figure 6 A schematic diagram of the connection structure between the fixed barrel and the screw rod provided in an embodiment of the present invention is shown;

[0032] Figure 7 A cross-sectional view of the structure of a fixed barrel from a first viewing angle according to an embodiment of the present invention is shown;

[0033] Figure 8 A second perspective structural cross-sectional view of a fixed barrel provided according to an embodiment of the present invention is shown;

[0034] Fig. 9 A schematic diagram of the connection structure between a pull rope and a hollow tube according to an embodiment of the present invention is shown;

[0035] Fig.10 An exploded schematic diagram of a connection structure between a moving plate and a supporting plate provided in an embodiment of the present invention is shown;

[0036] Fig.11 A schematic diagram of the connection structure between a clamping block and a pressure block provided according to an embodiment of the present invention is shown.

[0037] Legend: 1. Cyclone furnace body; 12. Cyclone furnace bracket; 2. Air inlet pipe; 21. Air inlet pipe bracket; 22. Flow meter; 23. Valve; 24. First flexible connection; 3. Ejector; 31. Ejector bracket; 4. Feeding device; 41. Air powder box bracket; 42. Air inlet pipe; 43. Storage box; 44. Air powder box; 45. Exhaust pipe; 46. Discharge pipe; 47. Elastic rope; 48. Fixed barrel; 49. Screw rod; 410. Discharge pipe; 411. Movable plate; 412. Fixed plate; 413. Connecting spring; 414. Touch pressure switch; 415. Pull rope; 416. Solenoid valve ; 417, piston; 418, rotating seat; 419, hollow tube; 420, mounting seat; 421, block; 422, extrusion rod; 423, first guide roller; 424, second guide roller; 425, motor; 426, moving plate; 427, slider; 428, slide groove; 429, compression spring; 430, pressure block; 431, annular groove; 432, support plate; 5, Roots blower; 51, second flexible connection; 52, muffler; 6, first side centrifugal fan; 7, first side bellows; 8, second side centrifugal fan; 9, second side bellows; 10, exhaust pipe; 11, dust collector. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figure 1-11 As shown, a complex airflow generating device comprises a cyclone furnace body 1, an air intake pipeline 2, an ejector 3, a feeding device 4, a Roots blower 5, a first side centrifugal blower 6, a first side wind box 7, a second side centrifugal blower 8, a second side wind box 9, an exhaust pipeline 10 and a dust collector 11, the output end of the Roots blower 5 is connected to the input end of the feeding device 4, the output end of the feeding device 4 is connected to the input end of the ejector 3, the output end of the ejector 3 is connected to the cyclone furnace body 1 through the air intake pipeline 2, the first side centrifugal blower 6 cooperates with the first side wind box 7, the second side centrifugal blower 8 cooperates with the second side wind box 9, the first side wind box 7 and the second side wind box 9 are connected to the cyclone furnace body 1 through the air intake pipeline 2 respectively. The cyclone furnace body 1 is connected, and the cyclone furnace body 1 is connected to the dust collector 11 through the exhaust pipe 10. When in use, the cyclone furnace body 1 is made of organic glass, the ejector 3 is used to mix air and experimental powder, the experimental powder is glass beads, the feeding device 4 is used to provide experimental powder, and solid particles are sent into the cyclone furnace body 1 to observe the gas-solid flow field. The Roots blower 5 provides power to drive the experimental powder to flow, the first side centrifugal fan 6 and the second side centrifugal fan 8 provide power, so that the first side bellows 7 and the second side bellows 9 make the flow field more uniform, and the dust collector 11 is used to eliminate the powder in the pipeline, separate the solid dust from the air, and prevent air pollution.

[0040] Furthermore, it also includes a cyclone furnace bracket 12 for installing the cyclone furnace body 1, an intake pipeline bracket 21 for installing the air intake pipeline 2, and an injector bracket 31 for installing the injector 3. The cyclone furnace bracket 12 is provided with a cyclone furnace fixing member for fixing the cyclone furnace body 1. The air intake pipeline 2 is respectively provided with a flow meter 22 and a valve 23. The connecting ends of the air intake pipeline 2 are respectively connected through a first flexible connection 24. The output end of the Roots blower 5 is sleeved with a muffler 52. The output end of the Roots blower 5 is connected through a second flexible connection 51. In use, the air intake pipeline 2 is provided with a muffler 52. The bracket 21 supports the air intake pipe 2, the ejector bracket 31 supports the ejector 3, the flow meter 22 is used to test the air flow in the pipeline, the valve 23 is convenient for adjusting the flow in the pipeline, and the flow through the pipeline can be steplessly adjusted by adjusting the opening and closing degree of the valve 23, and the adjustment speed is fast. The valve 23 can be opened slowly, the value of the flow meter 22 can be noted, and the situation at the measuring point in the visual boiler can be observed at the same time, and the data can be recorded on the acquisition board. The first soft connection 24 and the second soft connection 51 can effectively prevent the fan from vibrating and play a role in isolating vibration.

[0041] Further, the feeding device 4 includes an air powder box 44 and an air powder box bracket 41 arranged at the lower end of the air powder box 44, an air inlet pipe 42 matched with the output end of the Roots blower 5 is penetrated on one side of the air powder box 44, and an exhaust pipe 45 matched with the input end of the ejector 3 is penetrated on the other side of the air powder box 44, a fixed barrel 48 is penetrated through the bottom surface of the air powder box 44, a piston 417 is slidably arranged inside the fixed barrel 48, two support plates 432 are symmetrically arranged at the lower end of the air powder box 44, a movable plate 426 is slidably arranged between the two support plates 432, a motor 425 is fixedly arranged on the upper end of the movable plate 426, and a screw 49 is arranged at the output end of the motor 425 through a coupling, and the screw The upper end of the rod 49 is rotatably connected to the lower end of the piston 417, and a connecting assembly that cooperates with the screw rod 49 is provided inside the fixed barrel 48. A storage box 43 is fixedly provided at the upper end of the air powder box 44, and a discharge pipe 46 for adding powder to the fixed barrel 48 is provided at the lower end of the storage box 43. A feeding assembly that cooperates with the fixed barrel 48 is provided at the lower end of the discharge pipe 46. During use, powder is added to the fixed barrel 48, and wind is blown into the air powder box 44 through the air inlet pipe 42. The screw rod 49 is driven to rotate by starting the motor 425. The rotation of the screw rod 49 causes the piston 417 to move upward, so that the powder in the fixed barrel 48 is squeezed upward and discharged from the exhaust pipe 45 following the wind.

[0042] Furthermore, the feeding assembly includes an elastic rope 47 and a fixed plate 412 for closing the upper end of the fixed barrel 48, a discharge pipe 410 that is in sliding contact with the inner wall of the discharge pipe 46 is fixedly provided on the upper end of the fixed plate 412, a solenoid valve 416 that matches the discharge pipe 410 is provided in the middle of the fixed plate 412, a movable plate 411 is provided on the outer sliding sleeve of the discharge pipe 410, the upper end of the movable plate 411 is connected to the inner top surface of the air powder box 44 through the elastic rope 47, the lower end of the movable plate 411 is connected to the upper end of the fixed plate 412 through the connecting spring 413, a touch pressure switch 414 is provided on the upper end of the fixed plate 412, and the touch pressure switch 414 is electrically connected to the solenoid valve 416, and the connecting assembly includes a rotating seat 418 rotatably arranged inside the fixed barrel 48 and a fixed lower end of the rotating seat 418 The hollow tube 419 is rotatably connected to the bottom surface of the fixed barrel 48 through a bearing. A mounting groove is provided on one side of the rotating seat 418. A block 421 is slidably provided in the mounting groove. The cross section of the block 421 is trapezoidal. The block 421 is connected to the inner wall of the mounting groove through a compression spring 429. A slot matching the block 421 is provided on the inner wall of the fixed barrel 48. A pressure block 430 is fixedly provided on the upper end of the block 421. An extrusion rod 422 for extruding the pressure block 430 so that the compression spring 429 is compressed is provided at the lower end of the piston 417. An annular groove 431 matching the extrusion rod 422 is provided on the upper end surface of the rotating seat 418. Two pull ropes 415 are symmetrically and movably penetrated on the side wall of the fixed barrel 48. The upper ends of the two pull ropes 415 respectively penetrate the fixed The plate 412 is fixedly connected to the lower end of the movable plate 411, and the lower ends of the two pull ropes 415 are fixedly connected to the outer surface of the hollow tube 419 respectively. When in use, when there is no powder in the fixed barrel 48, the piston 417 is located above the inside of the fixed barrel 48, and the motor 425 is controlled to reverse and drive the screw rod 49 to reverse. The screw rod 49 reverses and causes the piston 417 to move downward. When the extrusion rod 422 at the lower end of the piston 417 contacts and squeezes the pressure block 430, the pressure block 430 moves and drives the card block 421 to exit the slot. At this time, the compression spring 429 is compressed. Since the cross-section of the card block 421 is a trapezoid, when the trapezoidal inclined surface of the card block 421 exits the slot, the reversal of the screw rod 49 will drive the rotating seat 418 to rotate, and the rotation of the rotating seat 418 drives The hollow tube 419 rotates, and the rotation of the hollow tube 419 causes the pull rope 415 to be wound around the surface of the hollow tube 419, and then the pull rope 415 is pulled, and the pull rope 415 drives the movable plate 411 to move downward, and the movable plate 411 moves downward so that the fixed plate 412 contacts the upper end surface of the fixed barrel 48, and then the pull rope 415 continues to stretch, so that the movable plate 411 continues to move downward and squeezes the touch switch 414, so that the solenoid valve 416 opens, and at this time, the powder enters the fixed barrel 48 through the discharge pipe 46 and the discharge pipe 410, and the powder will not be spilled in this process. When the powder is added to the fixed barrel 48, the motor 425 drives the screw rod 49 to rotate forward. Since the block 421 is separated from the slot, the forward rotation of the screw rod 49 will drive the rotating seat 418 to rotate.The rotating seat 418 rotates to drive the hollow tube 419 to rotate and release the pull rope 415, so that the movable plate 411 moves upward and resets, and the pressure on the touch-pressure switch 414 is released, so that the solenoid valve 416 is closed, and then the movable plate 411 continues to move upward and drives the fixed plate 412 to move upward and reset, so that the upper end of the fixed barrel 48 is opened to prepare for the subsequent powder supply. When the rotating seat 418 rotates to align the block 421 with the slot, the block 421 is stuck in the slot under the reset action of the compression spring 429, so the rotating seat 418 cannot continue to rotate. At this time, the rotation of the screw rod 49 will drive the piston 417 to move upward, that is, the powder can be pushed upward from the fixed barrel 48 again.

[0043] Furthermore, two mounting seats 420 are symmetrically provided at the lower end of the fixed barrel 48. The two mounting seats 420 are respectively provided with a first guide roller 423 and a second guide roller 424 that cooperate with the pull rope 415 to guide the pull rope 415 and avoid wear of the pull rope 415 during the stretching or release process.

[0044] Furthermore, sliding blocks 427 are fixedly provided on both sides of the movable plate 426 , and sliding grooves 428 for sliding connection of the sliding blocks 427 are provided on the surfaces of the two supporting plates 432 .

[0045] Furthermore, a ball is rotatably embedded in the lower end of the extrusion rod 422, so that the lower end of the extrusion rod 422 is in rolling contact with the pressure block 430, effectively reducing friction resistance.

[0046] Furthermore, the piston 417 is in a square shape, which ensures the stability of the piston 417 sliding in the fixed barrel 48.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A complex airflow generating device, characterized in that: The invention comprises a cyclone furnace body (1), an air intake pipeline (2), an ejector (3), a feeding device (4), a Roots blower (5), a first side centrifugal blower (6), a first side wind box (7), a second side centrifugal blower (8), a second side wind box (9), an exhaust pipeline (10) and a dust collector (11), wherein the output end of the Roots blower (5) is connected to the input end of the feeding device (4), the output end of the feeding device (4) is connected to the input end of the ejector (3), and the ejector (5) is connected to the ...). The output ends of the device (3) are respectively connected to the cyclone furnace body (1) through an air intake pipeline (2); the first side centrifugal fan (6) cooperates with the first side wind box (7); the second side centrifugal fan (8) cooperates with the second side wind box (9); the first side wind box (7) and the second side wind box (9) are respectively connected to the cyclone furnace body (1) through the air intake pipeline (2); and the cyclone furnace body (1) is connected to the dust collector (11) through an exhaust pipeline (10); It also comprises a cyclone furnace bracket (12) for mounting a cyclone furnace body (1), an air intake pipeline bracket (21) for mounting an air intake pipeline (2), and an ejector bracket (31) for mounting an ejector (3); the cyclone furnace bracket (12) is provided with a cyclone furnace fixing member for fixing the cyclone furnace body (1); the air intake pipeline (2) is provided with a flow meter (22) and a valve (23); the connection ends of the air intake pipeline (2) are connected via a first flexible connection (24); the output end of the Roots blower (5) is provided with a silencer (52); and the output end of the Roots blower (5) is connected via a second flexible connection (51); The feeding device (4) comprises an air powder box (44) and an air powder box bracket (41) arranged at the lower end of the air powder box (44); an air inlet pipe (42) matching with the output end of the Roots blower (5) is provided through one side of the air powder box (44); an air exhaust pipe (45) matching with the input end of the ejector (3) is provided through the other side of the air powder box (44); a fixed barrel (48) is provided through the bottom surface of the air powder box (44); a piston (417) is slidably provided inside the fixed barrel (48); two support plates (432) are symmetrically provided at the lower end of the air powder box (44); a sliding connection is formed between the two support plates (432). A movable plate (426) is provided, a motor (425) is fixedly provided at the upper end of the movable plate (426), a screw rod (49) is provided at the output end of the motor (425) via a coupling, the upper end of the screw rod (49) is rotatably connected to the lower end of the piston (417), a connecting component matching with the screw rod (49) is provided inside the fixed barrel (48), a material storage box (43) is fixedly provided at the upper end of the air powder box (44), a discharge pipe (46) for adding powder into the fixed barrel (48) is provided at the lower end of the discharge pipe (46), and a feeding component matching with the fixed barrel (48) is provided at the lower end of the discharge pipe (46).

2. A complex airflow generating device according to claim 1, characterized in that: The feeding assembly comprises an elastic rope (47) and a fixed plate (412) for closing the upper end of a fixed barrel (48); a discharge pipe (410) which is in sliding contact with the inner wall of a discharge pipe (46) is fixedly provided at the upper end of the fixed plate (412); a solenoid valve (416) which cooperates with the discharge pipe (410) is provided in the middle of the fixed plate (412); a movable plate (411) is provided on the outer sliding sleeve of the discharge pipe (410); the upper end of the movable plate (411) is connected to the inner top surface of the air powder box (44) through the elastic rope (47); the lower end of the movable plate (411) is connected to the upper end of the fixed plate (412) through a connecting spring (413); a touch pressure switch (414) is provided at the upper end of the fixed plate (412); and the touch pressure switch (414) is electrically connected to the solenoid valve (416).

3. A complex airflow generating device according to claim 2, characterized in that: The connecting assembly comprises a rotating seat (418) rotatably arranged inside the fixed barrel (48) and a hollow tube (419) fixedly arranged at the lower end of the rotating seat (418); the hollow tube (419) is rotatably connected to the bottom surface of the fixed barrel (48) via a bearing; a mounting groove is provided on one side of the rotating seat (418); a clamping block (421) is slidably arranged in the mounting groove; the clamping block (421) has a trapezoidal cross section; the clamping block (421) is connected to the inner wall of the mounting groove via a compression spring (429); a clamping groove matching the clamping block (421) is provided on the inner wall of the fixed barrel (48); the clamping block (421) is provided on the upper surface of the clamping block (421); A pressure block (430) is fixedly provided at the end, an extrusion rod (422) is provided at the lower end of the piston (417) for extruding the pressure block (430) so that the compression spring (429) is compressed, an annular groove (431) is provided on the upper end surface of the rotating seat (418) and is matched with the extrusion rod (422), and two pull ropes (415) are symmetrically and movably penetrated through the side wall of the fixed barrel (48), the upper ends of the two pull ropes (415) respectively movably penetrate the fixed plate (412) and are fixedly connected to the lower end of the movable plate (411), and the lower ends of the two pull ropes (415) are respectively fixedly connected to the outer surface of the hollow tube (419).

4. A complex airflow generating device according to claim 3, characterized in that: Two mounting seats (420) are symmetrically arranged at the lower end of the fixed barrel (48), and a first guide roller (423) and a second guide roller (424) that cooperate with the pull rope (415) are rotatably arranged inside the two mounting seats (420).

5. The complex airflow generating device according to claim 1, characterized in that: Slide blocks (427) are fixedly provided on both sides of the movable plate (426), and sliding grooves (428) for sliding connection of the slide blocks (427) are provided on the surfaces of the two support plates (432).

6. A complex airflow generating device according to claim 3, characterized in that: A ball is rotatably embedded in the lower end of the squeezing rod (422).

7. The complex airflow generating device according to claim 1, characterized in that: The piston (417) is square in shape.

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