Rotating vibration screen feeding mechanism

Abstract

The invention relates to the technical field of medicine processing and discloses a rotating vibration screen feeding mechanism. A dustproof cover and a feeding pipe arranged on the middle portion ofthe dustproof cover are included; the inner side of the feeding pipe is in threaded connection with an outer barrel; a connection rod is fixedly installed on the top of the inner side of the outer barrel, and a connection barrel is fixedly installed at the other end of the connection rod; and the connection barrel is located in the outer barrel. According to the rotating vibration screen feeding mechanism, when materials fall onto a screen net, the amount of the materials in a screen net edge area is larger than the amount of the materials on the center portion of the screen net, the larger the exciting force of areas on the screen net of a rotating vibration screen is, the more the materials falling into the areas are, and the smaller the exciting force of the areas on the screen net, theless the materials falling into the areas are; and on the full basis of the characteristic (vibration of the edge area of the screen net is larger than that of the center portion, many materials canbe screened, and the screening effect of the edge area is also superior to that of the center portion) of the screen net during screening, the screening efficiency of the rotating vibration screen isimproved.

Description

technical field [0001] The invention relates to the technical field of pharmaceutical processing, in particular to a rotary vibrating sieve feeding mechanism. Background technique [0002] The rotary vibrating sieve screens the drug particles layer by layer, small materials fall to the lower layer, and large materials fall from the edge of the screen to be removed by vibration (the principle of each layer is similar), until the drug with a specified particle size is screened, and the rotary vibration For the principle of sieve, refer to the attached figure 1 . [0003] The existing rotary vibrating screen utilizes the function of the diverting guide plate to directly and evenly disperse the material on the screen, so that the amount of material falling into the screen from the center to the edge area is basically the same, but the exciting force (the closer the screen itself is to the screen box) The greater the exciting force (vibration amplitude) at the connection of the...

AI Technical Summary

Problems solved by technology

[0003] The existing rotary vibrating screen utilizes the function of the diverting guide plate to directly and evenly disperse the material on the screen, so that the amount of material falling into the screen from the center to the edge area is basically the same, but the exciting force (the closer the screen itself is to the screen box) The greater the exciting force (vibration amplitude) at the connection of the body (the transmission effect of the amplitude changes with the transmission distance), the closer to the center of the screen the smaller the exciting force is, and the greater the exciting force, the greater the vibration amplitude of the material , the better the screening effect) Different areas screen the same amount of materials, resulting in the structural characteristics of the screen (the excitation force in the edge area of ​​​​the screen is larger, and more materials can be screened) cannot be fully utilized

[0004] The support strength of the central part of the screen is weaker than that of the fixed part of the outer edge, and the force strength of the central part is relatively weak. The rotary vibrating screen disperses the material evenly to each area of ​​the screen through the diversion guide plate, although the impact of the material on the central part is avoided. However, the diverted material still contains many larger particles and falls to the middle, which still has a certain impact on the screen. The long-term impact effect will still cause the middle of the screen to collapse, deform, or even be damaged.

[0005] At the same time, when the large material and small material fall to the middle of the screen at the same time, the small material falls to the lower layer through the screen, and the large material moves to the edge area of ​​the screen through the vibration of the screen, because the excitation force of the edge of the screen is greater than that of the middle area. Therefore, it is difficult for the large material in the middle of the screen to move quickly to the edge area through the vibration of the screen, resulting in a long time for the large material to stay on the screen, so that the subsequent granular material cannot fall to the next layer in time, and the material screening efficiency is improved. Low

Images