Jigger is used for crushing all kinds of medium-hard and weakly abrasive materials. The compressive strength of the material is not more than 100MPa and the moisture content is less than 15%. The crushed materials are coal, salt, chalk, gypsum, masonry, limestone and so on. It is also used for crushing broken wood with strong fibre structure, elasticity and toughness, paper or crushing asbestos cement waste to recover asbestos fibre and so on. Ore particles are mainly stratified by specific gravity in a jigger. Jigger can not only sort narrow grade ore particles, but also can effectively sort wide grade and unclassified ore particles. Diaphragm concentrator jigger can be divided into the following types according to the position where the transmission mechanism is located.

(1)Upper movable type (or called side movable type) diaphragm concentrator jigger.300mm×450mm (length×width) side movable type diaphragm concentrator jigger.

(2)Lower moving type diaphragm concentrator jigger.1000 mm×1000 mm(length×width)lower moving type diaphragm concentrator jigger;

(3) Side moving type diaphragm concentrator equipment jigger. Trapezoidal concentrator equipment jigger. Diaphragm concentrator jigger box upper jigging chamber is installed with ore sieve plate and sieve ore discharge device, sieve plate below the sieve is equipped with sieve replenishment water pipe. Transmission mechanism to make the diaphragm for the up and down reciprocating movement (such as the upper or lower dynamic type diaphragm concentrator jigger), or for the left and right reciprocating movement (such as side dynamic diaphragm concentrator jigger), so that the jigging chamber of the water flow for the upper and lower alternating movement, the screen plate in the upper and lower alternating pulsation of the water flow in the role of the ore loosening and stratification according to the density of density, density of large particles sinking in the sieve plate and the sieve ore by the device Discharged from the machine, it becomes the concentrate on the screen; small density ore particles are carried by the liquid flow through the tail plate of the jigging chamber and discharged, it becomes the tailings. Jigging room of the water flow in the descending movement, in the interstices of the group of ore particles caused by the suction effect of the water flow, so that the fine and heavy ore particles in the coarse particles of the interstices of the scarf ‘drilling gap’ movement to the lower layer of the ore layer, and through the sieve from the lower part of the box, for the sieve concentrate. Diaphragm jigging equipment jigger structure mainly includes: box, diaphragm, transmission device, discharge device and sieve replenishment water device. The design of jigger for mineral processing equipment is mainly the design of the above several construction elements.

Emergency treatment method when jigger accident occurs:

1, jigging machine found that the electromagnetic valve action is inflexible or inactive, jigging machine screen plate loose, broken and other faults, should stop feeding, notify the 302 scraper stopping, and report scheduling, make a detailed record, (will be loose, broken screen plate clean up) to be electromechanical repair to arrive at the scene, point out the

Fault point.

2、When an unexpected accident occurs, an emergency stop signal should be issued in time, report to the factory dispatching in time, and actively organise personnel to deal with it. Above troubleshooting, should adhere to a good stop sign system.

3、When the bucket elevator or fine coal screen has an emergency stop, it should stop feeding immediately and wait for the fault treatment before feeding; 4、If there is a fire, it should stop feeding immediately and report to the plant dispatching.

4, such as fire, should immediately open the fire extinguisher box cover, take out the fire extinguisher, pull off the seal, pull out the safety pin, lift the fire extinguisher, hand holding the nozzle, and the fire point to maintain a certain distance, aimed at the fire point diagonal upper, press the handle gate valve, extinguish the fire, and at the same time report to the scheduling, the situation should be evacuated along the safe passage in a timely manner.

5、When the high frequency vibrating mesh screen appears screen surface breakage, screen mesh loose should stop jigger feeding, notify the tilting plate sedimentation tank bottom flow pump stopping, report dispatching, make a detailed record, to be electromechanical repair to arrive at the scene, pointing out the failure point.

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