Small cone crusher is mainly used in medium and fine crushing of various hardness of ores. Its working principle is almost same with other crushers. Cone crusher has strong oscillation frequency and larger swing range, thus ores in the crushing cavity are received the fast impact force by the big travel range, and because at the bottom of the crushing chamber is equipped with a certain length of parallel mining area, which can guarantee the mine broken at least once in the parallel zone. therefore, cone crusher, with the features of big crushing ratio roller mill, high output, less power consumption, uniformed product size, etc, which made its application scope wider.Henan Daswell Machinery Co., Ltd,is a professional manufacturer and trader specializing in the research, development and production of construction machinery for nearly 30 years. Our main products are as follows:portable crusher,mobile stone crusher,We will provide you with the best product and service. Using audible and visual indicator to indicate feeding directly. Because the running current in the crushing belt conveyor relates to materials in the chamber. A lot of materials in the chamber is easy to cause shut down, so according to the current characteristics of plate conveyor, formulated the solution, namely to install a bell and flashing alarm lights in the crusher mouth which made it direct connections with relay in electric cabinet. When the plate conveyor reaches a set current value, the relay pick-up, alarm lights start flashing, and bell rings. If the downstream equipment shuts down drilling rigs for sale, plate conveyor current is zero, the audible and visual alarm will have indication. At this time, stop feeding can prevent material blockage of mobile jaw crusher. Appropriate increase feed quantity, not only can improve the production capacity of crusher, reduce crusher product consumption, also can increase the rate of material in the crushing cavity filling, improve product fineness....