250*400 jaw crusher refers to a jaw crusher with a feed port width of 250mm and a length of 400mm, which is a small jaw crusher. 250*400 jaw crusher is used to crush ores with compressive strength not exceeding 320 MPa, such as granite, iron ore, sandstone, coke, coal gangue, limestone, quartz stone, raw coal, slag, gypsum and other minerals , 250*400 Jaw Crusher is strong in structure, durable and in great demand.

1. The size of the feed port

The size of the feeding port of 250*400 jaw crusher is 250×400. In order to improve the smoothness of feeding, the size of the feeding port is accurately calculated, and the formula is used to evolve. The design of the feeding port directly affects the smoothness of feeding. Therefore, in order to obtain higher production capacity, it is necessary to make more efforts in the design of the feeding port. Different types of jaw crushers have differences in the size of the feeding port, but on the whole, Jaw crushers are also ideal for crushing large stones.

2. The maximum feed particle size

The maximum feeding size of the 250*400 jaw crusher is 210. This data is calculated accurately. It is necessary to feed within the allowable range of the feeding size, which can effectively avoid clogging and greatly reduce the wear of the feeding port. Improve crushing efficiency. The reduction of wear and tear from the feeding of 250*400 jaw crusher is based on three points. First, setting the feeding particle size can effectively avoid damage to the liner caused by non-breakable materials such as iron, and second, it can increase the buffer layer and material transportation channel. The third is to increase the metal wall at the feed to reduce the wear of the feed port.

3. The adjustment range of the discharge port

The adjustment range of the discharge port of the 250*400 jaw crusher is between 20-60mm, and the size of the discharge port can be adjusted. The size of the discharge port directly affects the particle size of the finished product and determines the quality of the finished product. The 250*400 jaw crusher uses a section of After time, the discharge port will inevitably have different degrees of wear, so in order to reduce the wear, the 250*400 jaw crusher equipment with more wear-resistant material of the discharge port should be selected.

4. Processing capacity

The processing capacity of the 250*400 jaw crusher is 7-23t/h. Compared with other types of small stone crushers, the processing capacity of the 250*400 jaw crusher is still higher. The production capacity is not a fixed value. In actual operation, its production capacity is also affected by various factors. To improve the production capacity of the equipment, it is necessary to start from two points. One is to choose a more durable 250*400 jaw crusher, and the other is to standardize operation, regular maintenance and maintenance.

5. Eccentric shaft speed

The rotating speed of the eccentric shaft of the 250*400 jaw crusher is 300r/min. The rotating speed of the eccentric shaft directly affects the number of crushing. When the speed increases, the production capacity of the 250*400 jaw crusher increases correspondingly, but when the movable jaw swings beyond a certain limit, if the speed is increased, the production capacity increases very slowly, and sometimes even decreases. Therefore, for different types of jaw crushers It is very important for the crusher to set the proper eccentric shaft speed.

6. Motor power

The motor power of the 250*400 jaw crusher is 15kw. Since the 250*400 jaw crusher is a small jaw crusher, the whole machine is more flexible and has low production capacity. The configured motor power is higher than the actual needs of the crusher. It can ensure that the whole machine is kept at full load at all times during operation, greatly improve the output of the whole machine, and avoid excessive energy consumption.