Vacuum online feeding device of positive pressure system

Abstract

The invention provides a vacuum online feeding device of a positive pressure system. The vacuum online feeding device comprises a conical feeding copper, an electrically operated valve, a vacuum generating device and a material buffering device. The vacuum online feeding device is characterized in that the conical feeding copper and the vacuum generating device are connected with the electrically operated valve through flanges; a long pipe of the vacuum generating device is composed of a vertical pipe and an inclined pipe, and the included angle between the vertical pipe and the inclined pipe is 45 degrees; two identical compressed air inlet pipes with small calibers are symmetrically arranged on the two sides of the inclined pipe, and the included angles between the axes of two compressed air inlet pipes and the axis of the inclined pipe are 18 degrees to 20 degrees. The two compressed air inlet pipelines are connected with a main air inlet pipe through a tee joint and are symmetrically distributed on the two sides of the axis of the tee joint, and therefore compressed air entering the two air inlet pipes is equal in flow. The material buffering device is welded to a material outlet of the vacuum generating device, through a rubber plate buffering baffle arranged on the material buffering device, part of energy of materials impacting a buffer cushion can be absorbed, the falling direction of the materials is changed, and the situation that equipment is damaged due to the fact that the materials directly collide with other parts in an equipment body is avoided.

Description

technical field [0001] The invention relates to a feeding device that utilizes high-speed compressed air to generate vacuum to supplement materials, especially a positive pressure system vacuum online feeding device that can realize online replenishment of materials without stopping the machine in equipment that has positive pressure inside and requires continuous operation. Background technique [0002] At present, in some equipment that requires continuous and uninterrupted operation and the internal pressure is greater than the external environmental pressure, also known as positive pressure system equipment, there are usually two ways to replenish new materials. [0003] combine figure 1 , one way is to stop the device and wait for the pressure p inside the device body 2 1 reduced to the ambient pressure p 0 When balancing, the material is directly added to the equipment body 2 from the hopper 1 of the equipment; [0004] combine figure 2 , another way is to use a f...

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Problems solved by technology

However, according to feedback from many users who use this structure of feeding device, because of the addition of round steel 8, the feeding device often causes materia

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