Screening assembly with blocking mechanism

Abstract

The invention discloses a screening assembly with a blocking mechanism. A screen basket cover is arranged at the top of a screen basket, and a feeding opening is formed in the screen basket cover. Thescreen basket cover and the screen basket are tightly connected. A screen cloth is arranged on the lower portion of the screen basket, and the screen cloth and a material basket are tightly connectedthrough a hoop. A discharging opening is formed in one side of the screen basket, and an arc baffle is arranged at the inner end of the discharging opening. One end of the arc baffle is connected with a first fixing hinge column on the inner wall of the screen basket in a hinged mode, and the other end of the arc baffle is hinged to a connecting rod. The connecting rod is connected with one end of a guiding rod through a movable hinge device, and the other end of the guiding rod penetrates through a sleeve to be connected with a handle. When the contacting time of materials and the screen cloth is prolonged, the handle is pulled back, and under the effect of the guiding rod, the movable hinge device, the connecting rod and a second fixing hinge column, the discharging opening is closed bythe arc baffle around a first fixing hinge; and when the effect that the materials penetrate through the screen cloth is good, the handle is pushed forwards, and under the effect of the guiding rod,the movable hinge device, the connecting rod and the second fixing hinge column, the discharging opening is opened by the arc baffle around the first fixing hinge. The screening assembly has the characteristics that the structure is simple, and the screening precision is high.

Description

technical field [0001] The invention belongs to the technical field of screening, and in particular relates to a screening assembly with a material blocking mechanism. Background technique [0002] The screening process of materials on the vibrating screen is based on the principle of probability theory, the sieving of material particles is also random, and the factors affecting the screening efficiency are extremely cumbersome. Therefore, the relationship between screening efficiency and screening efficiency is theoretically analyzed. The relationship between each parameter is extremely complicated. The material enters the sieve body and falls to the sieve and presents a phenomenon of radial diffusion and rotation. Theoretically, the powder with a particle size smaller than the sieve becomes the undersize, and the powder with a particle size larger than the sieve becomes the oversize, but it often occurs during the sieving process. A certain proportion of undersize often r...

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Problems solved by technology

[0002] The screening process of materials on the vibrating screen is based on the principle of probability theory, the sieving of material particles is also random, and the factors affecting the screening efficiency are extremely cumbersome. Therefore, the relationship between screening efficiency and screening efficiency is theoretically analyzed. The relationship between each parameter is extremely complex

The material enters the sieve body and falls to the sieve and presents a phenomenon of radial diffusion and rotation. Theoretically, the powder with a particle size smaller than the sieve becomes the undersize, and the powder with a particle size larger than the sieve becomes the oversize, but it often occurs during the sieving process. A certain proportion of undersize often remains in the oversize, that is, when the screening is not sufficient, the material enters the collection tank, causing the proportion of undersize to be far lower than its actual ratio, and the screening accuracy is not up to standard, especially in the When sieving metal powder protected by inert gas, the sieve basket cover cannot be opened to directly intervene in the running track of the powder to prolong the sieving time. The problem of low metal powder sieving accuracy has not been solved. In order to meet the customer's requirements for powder particle size, often It is necessary to leapfrog the use of sieves for sieving

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