Screen

Abstract

The invention relates to a screen. The screen comprises a rubber net, an iron net and fixing screws. The rubber net and the iron net are same in structure and are each of a frame type structure; the iron net is fixedly arranged inside the rubber net; a plurality of limiting grooves are formed in the upper surface of the rubber net and are circular; screw holes the same as the limiting grooves in number are formed in the iron net, the diameter of each limiting groove is larger the diameter of the corresponding screw hole, and the centers of the limiting grooves and the screw holes are located on the same straight line; and the fixing screws penetrate through the limiting grooves and the screw holes correspondingly to enable the rubber net and the iron net to be fixedly connected with the contact face, and the fixing screws and the screw holes are in threaded connection. The screen has the advantages of reasonable structure and long service life.

Description

technical field [0001] The invention belongs to the technical field of leak screening appliances, and in particular relates to a screen. Background technique [0002] Sand and gravel aggregate is one of the main raw materials of concrete. The particle size of sand and gravel aggregate required by different graded concrete is also different. The size of the diameter is divided into different types of sand and gravel raw materials. When the screening machine is screening, it mainly filters the broken stones layer by layer through vibration and screen mesh, so as to achieve the purpose of classifying and storing sand and gravel raw materials of different sizes. However, most of the existing screens are made of rubber, which are easily damaged due to the impact and collision of stones during use, especially between adjacent grids inside the screen, which are prone to damage due to stones The collision causes the problem of connectivity between adjacent grids, which in turn incr...

AI Technical Summary

Problems solved by technology

[0002] Sand and gravel aggregate is one of the main raw materials of concrete. The particle size of sand and gravel aggregate required by different graded concrete is also different. The size of the diameter is divided into different types of sand and gravel raw materials. When the screening machine is screening, it mainly filters the broken stones layer by layer through vibration and screen mesh, so as to achieve the purpose of classifying and storing sand and gravel raw materials of different sizes. However, most of the existing screens are made of rubber, which are easily damaged due to the impact and collision of stones during use, especially between adjacent grids inside the screen, which are prone to damage due to stones The collision causes the problem of connectivity between adjacent grids, which in turn increases the pore size of the screen, causing the particle size of the filtered stones to be too large, which affects the quality of the concrete; when the screen is connected due to an adjacent grid When replacing, the cost is too high; and the connection between the existing screen and the screening machine is not very stable. During the vibration of the screening machine, it is easy to cause the fixing screws to loosen, resulting in a gap between the screen and the screening machine. Loose; therefore, in order to solve the above problems, it is necessary to develop a screen with reasonable structure and long service life

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