Elastic air cushion anti-attrition elbow

Abstract

The invention discloses an elastic air cushion anti-attrition elbow. The elastic air cushion anti-attrition elbow comprises an elbow pipe wall, an elastic net and a flow dividing inserting plate, a flow dividing inserting plate is additionally arranged at an inlet to divide airflow carrying materials, so that the airflow is layered and collided, and abrasion to the wall of a bent pipe and a metal net is reduced. The elastic net is arranged in the inner side of the bent pipe wall, an air chamber area is formed between the elastic net and the inner side of the bent pipe wall, square through holes are uniformly distributed in the elastic net, and the size of the square through holes is smaller than that of internally circulating solid particles, so that air is separated from the solid particles; and a part of air enters the air chamber area through the square through hole to form the air cushion; solid particles collide with the elastic net, the elastic net absorbs impact kinetic energy of the solid particles and converts the impact kinetic energy into elastic potential energy, then the potential energy is converted into kinetic energy to accelerate the particles to rush out of the elbow, and energy loss is little while the movement direction of the solid particles is changed; and as the pressure difference exists between the inlet and the outlet of the elbow, an air cushion rushing to the axis of the elbow can be formed in the air chamber area to protect the elastic net and the elbow pipe wall. The elastic air cushion anti-attrition elbow is longer in service life, better in anti-abrasion effect and more beneficial to replacement and maintenance.

Description

technical field [0001] The invention relates to the field of pneumatic conveying of solid particles, in particular to an elastic air cushion wear-reducing elbow. Background technique [0002] Pneumatic conveying uses the energy of the air to transport materials. The energy of the air can be changed into two forms of pressure and speed. Generally, the energy in the form of speed is used, that is, the kinetic energy of the air with a certain speed is used to transport materials. When the particles are transported in the horizontal pipeline and the vertical pipeline, the incident angle of the collision between the particles and the wall of the elbow is very small, which generally does not cause serious wear. When the particles enter the elbow, due to the change of the direction of motion and the action of centrifugal force and inertial force, the solid particles are carried by the gas at a very high speed and hit the wall of the elbow. Impact on the wall of the bend, causing w...

AI Technical Summary

Problems solved by technology

The first method can only prolong the service life of the elbow, but does not solve the problem of elbow wear; the third method does not solve the harsh working conditions of the elbow, and cannot effectively solve the problem of elbow wear, which still exists during use. Severe wear problem; although the third method reduces wear, it increases the power loss of the particles and is prone to ash plugging

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