Bracing wire type hanging and folding screen

Abstract

The invention discloses a bracing wire type hanging and folding screen for tests and belongs to the field of test room analyzing tools. The bracing wire type hanging and folding screen for tests comprises a screen cavity combined body, a screen box and a bracing wire mechanism. The screen cavity combined body comprises an upper static cavity, an upper swinging screen cavity, a shaking screen cavity, a lower swinging screen cavity and a lower static cavity. The double side faces of each screen cavity of the screen cavity combined body are provided with screen frames and screen nets. When the screen cavities of the screen cavity combined body are pulled left and right, variable-angle turning can be achieved, and the screen cavity combined body is fixed in the screen box. The bracing wire mechanism is used for controlling all the screen cavities in the screen box to shake from the outside of the screen box, so that the screen faces of all the screen cavities face upwards and face downwards alternately. When the bracing wire type hanging and folding screen is used for wet type screening, left and right alternate pulling is used for overturning pulp layers in the screen cavities, and the screen box is overturned vertically to improve the penetrating screening efficiency. The test tool has the beneficial effects of being free of power supply, capable achieving clean manual screening and capable of facilitating feeding and taking.

Description

technical field [0001] The invention relates to a pull-wire type hanging folding sieve, which is used for wet sieving and belongs to the field of laboratory analysis equipment. Background technique [0002] Wet grinding is generally used to dissociate minerals in mineral dressing production sites and experimental research processes, and the grinding products are measured at -0.074μm (ie 200 mesh), -0.043μm and -0.038μm, which are the industry's customary measurement indicators. Such particle fineness needs to be analyzed by means of wet sieving test. [0003] At present, the wet screening in the laboratory is completed manually. The method is to immerse the lower half of the round frame sieve in water, repeatedly shake it manually and hit the wall of the device to make the fine particles pass through the sieve, and release the turbid water in time, and replace it with clean water. . At the beginning of the artificial wet sieving operation, if a little more ore is dumped on...

AI Technical Summary

Problems solved by technology

At the beginning of the artificial wet sieving operation, if a little more ore is dumped on the sieve surface, the sediment layer will thicken. In order to loosely suspend the ore slurry, if the strength of hand shaking and bumping against the wall is not properly controlled, the ore slurry will flow from the sieve. If it splashes on the surface, it is necessary to use fingers to stir the slurry; in the process of artificial wet screening, the round frame screen is often slightly tilted to prevent the local screen surface from piling up ore, so that the clear water can overflow the screen surface. In this way, Then shaking by hand and hitting the wall, the slurry on the screen surface will be mixed thoroughly, and then shaking by hand and hitting the wall, the fine particles will be carried down by the water to pass through the sieve; shaking by hand, hitting the wall and stirring by hand will make the hands of the operator get muddy , making the hands uncomfortable, and it is inconvenient to operate with rubber gloves, and the sieving speed is slow, the product under the sieve has a large amount of water, and the collection of the product under the sieve is inconvenient

[0004] Although there are experimental instruments that use mechanical vibration to replace artificial wet sieves, they have not been widely used because the cost is too high after adding a vibration motor; On the vibrating device, it is inconvenient to fix, loosen and take out the round frame sieve

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