A Feeder Coupled with Double Discharge Valve and Venturi Tube

Abstract

The invention relates to a feeder with coupled double discharging valves and Venturi tubes. The feeder comprises a mixing room with an open top and a sealed bottom, two discharging valves stacked up and down are mounted on the top of the mixing room, upper and lower ends of the discharging valves are both provided with openings, wherein the upper opening end is a charging port in the shape of an inverted circular truncated cone, the lower opening end is a discharging port in the shape of a circular truncated cone, a rotary chamber is arranged between the charging port and the discharging port, an impeller is rotatably arranged in the rotary chamber, the impeller comprises a horizontally arranged discharging shaft rotatably connected to the rotary chamber, blades circumferentially and uniformly arranged on the discharging shaft, and bottom plates arranged between every two adjacent blades, a material cavity for filling materials is formed between each bottom plate and the corresponding two adjacent blades, the material cavities filled with materials are sealed with the side walls of the rotary chamber, the first Venturi tube and the second Venturi tube are tightly connected on the side wall of the mixing room, and the axes of the first Venturi tube and the second Venturi tube are collinear.

Description

technical field [0001] The invention relates to a feeder, in particular to a feeder with double discharge valves coupled with a Venturi tube. Background technique [0002] The feeder is widely used in the field of pneumatic transmission of solid materials. It is mainly composed of a discharge device and a material transmission device. The function of the discharge device is to uniformly discharge solid materials into the material transmission device. The high-speed air outputs the solid material quickly, uniformly and stably. At present, unloading valve and Venturi structure are commonly used unloading devices and material transmission devices, and the combination of unloading valve and Venturi structure is a commonly used feeder. The working principle of this type of feeder is: solid material from The top of the unloading valve enters, and the unloading valve unloads the solid material into the Venturi structure; the high-speed airflow rushes into the Venturi structure, fo...

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Problems solved by technology

However, the current feeder of this structure mainly has the following five disadvantages: (1) the current unloading valve only plays the role of unloading, and the solid material is unevenly distributed inside the unloading valve, and the unloading valve itself The sealing effect is poor, which makes it difficult for solid materials to be uniformly unloaded into the Venturi structure, resulting in unstable subsequent material supply; (2) After the high-speed airflow is mixed with the solid materials, it is difficult to form a uniform gas-solid mixture, resulting in the output of the gas-solid mixture The quality is not uniform, resulting in large fluctuations in the supply; (3) the high-speed airflow and the solid material will collide with the pipe wall during the mixing process and the gas-solid mixture during the discharge process. In both cases, there must be energy loss, which shortens the supply. distance; (4) Due to the different transmission characteristics of different solid materials, the feeder has poor adjustability to different solid materials, and the feeding stability of the feeder cannot be controlled when transmitting solid materials with different characteristics; (5) Venturi There may be dead corners in the Venturi structure, and the material cannot be discharged in time, which not only easily causes blockage in the Venturi structure, but also affects the stability of the material supply.

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