Reduce dust pollution of jaw crusher

As the * crushing equipment for ore mining, the working environment faced by jaw crushers is often harsh. Large amounts of ore will inevitably produce a large amount of dust during the crushing process, which will diffuse into the air with the airflow, which will not only cause serious environmental pollution. , It will also cause certain harm to the staff's physical and mental health, so how to effectively reduce the dust pollution of the jaw crusher has become a problem that major manufacturers need to solve. Through continuous analysis and research, Jiaozuo Zhongxin Heavy Industry has summed up a series of solutions.

Dust is caused by ore crushing, part of which is carried by the ore itself, and the other part is generated in the later stage of ore crushing. The general trajectory of the ore is that the ore enters the machine from the feed port, is crushed to the relevant particle size in the machine, and is discharged from the discharge port, and then transported to the post-processing equipment through the chute and belt conveyor. It can be seen that the devices that make the dust and air directly contact are the inlet, the outlet, the chute and the belt conveyor. In addition, the use of hoppers, protective covers, chutes, etc. in the production process will cause materials to produce a certain height of potential energy difference, which is another major cause of dust.

To solve the problem of dust pollution, one is to use external force to control the source of dust to avoid its spread, and the other is to improve the local structure of the machine. The specific measures are as follows:

1. The dust source is equipped with a sealed cover, which is mainly equipped with a water spray device and a dust suction device.

(1) Two water spray nozzles can be set at each of the three main parts of the inlet, the outlet and the movable jaw crushing cavity. The two nozzles at the manhole point to the inlet; the two nozzles at the outlet are opposite A certain angle is formed to make the sprayed mist form a cross state to achieve a good spray effect; the nozzle at the crushing cavity is set behind the movable jaw, at a certain angle to the horizontal.

(2) A vacuum cleaner can be installed at the discharge port and the inspection port behind the movable jaw of the crushing chamber. The vacuum cleaner of the discharge port vacuum cleaner is about 1000mm away from the discharge port, and the surface of the vacuum hood is perpendicular to the direction of dust flow; The connecting duct between the suction hood of the vacuum cleaner and the fan after the moving jaw is designed as a stretchable pipe to facilitate the refueling of the broken mobile jaw and daily maintenance.

2. The structure can be modified and optimized in terms of inclination angle, tooth plate, etc. of the chute.

(1) The measure to reduce the potential energy difference of material height is to reduce the inclination angle of the chute.

(2) When the overall size remains the same, the number of teeth of the tooth plate is increased, and the tooth profile is relatively smaller.