Method and device for increasing sucking capability and distance of suction opening

[0015] figure 1 It is a schematic diagram of the principle of the method of the present invention. See figure 1 The method of the present invention to improve the suction capacity and distance of the suction port is to set a number of jet nozzles 2 around the suction port that are driven by a power source and rotate around the suction port, and the jet nozzle axis is inclined to the suction port axis. The jet is a gas flow (or steam or a gas-liquid mixture).

[0016] figure 2 , image 3 It is a schematic diagram of the device structure of the present invention. See Figure 2 ~ Figure 3 The device of the present invention includes an exhaust pipe 1A, an exhaust fan 1B installed at the outlet of the exhaust pipe, which is installed on the outer periphery of the exhaust pipe in turn, is installed in the exhaust pipe through an outsourcing rotary bearing 9 and a gear reduction transmission mechanism 12 and a turbo reducer 11 The rotating wind box 7 and the stationary wind box 4 driven by the motor 10 on the air duct motor seat 1C. A number of jet nozzles 2 are arranged on the rotating wind box along the outer periphery of the exhaust pipe, and a number of rotating annular air pipes 6 corresponding to the jet nozzles respectively. One end of each rotating annular wind pipe extends into the static wind box and a rotating seal 5 is installed between the wall of the static wind box. The air blowing port of the blower 3 installed on the static wind box extends into the static wind box. The angle α between the jet nozzle axis and the exhaust fan axis is 30° (see image 3 ), the radial included angle β is 15° (see Figure 4 ).

[0017] The exhaust fan 1B and the exhaust pipe 1A constitute the suction system; the blower 3, the stationary wind box 4, the rotating seal 5, the rotating annular duct 6, the rotating wind box 7, the jet nozzle 8, the rotating bearing 9 and the motor 10, the turbo reducer 11 The gear reduction transmission mechanism 12 constitutes a rotating jet generating system. When the device is working, the blower 3 generates positive pressure air, which passes through the stationary wind box 4 and the rotating annular wind pipe 6 to the rotating wind box 7. Since the stationary wind box 4 and the rotating annular air duct 6 are connected by the rotating seal 5, the positive pressure air leakage is reduced, and the rotating annular air duct 6 is ensured to rotate along the axial direction of the suction duct 1A. After the positive pressure air reaches the rotating wind box 7, it is ejected outward through the jet nozzle 2. The rotating wind box 7 and the jet nozzle 2 are driven by a drive system composed of a motor 10, a turbine reducer 11, and a gear reduction transmission mechanism 12 to rotate along the axial direction of the exhaust pipe, thereby generating a strong rotating airflow. Under the action of the rotating airflow, the suction system of the suction system can greatly enhance the suction capacity of harmful dust.

[0018] In the above device, the motor 10, the exhaust fan 1B and the blower 3 all adopt frequency conversion speed regulation, and the operating parameters such as the nozzle rotation speed, the exhaust air volume, and the air blowing volume are controlled by the frequency conversion regulator.

[0019] figure 1 , figure 2 The serial numbers 3, 14, and 15 respectively indicate the direction of jet, the direction of inhalation, and harmful dust.

[0020] The above-mentioned embodiments are for further explanation of the above-mentioned content of the present invention, but it should not be understood that the scope of the above-mentioned subject of the present invention is limited to the above-mentioned embodiments. All technologies implemented based on the above content belong to the scope of the present invention.