In cement, metallurgy, mining, chemical, building materials and water conservancy and other industries, all kinds of ores and bulk materials, usually adopt jaw breaking as coarse crushing equipment, crushing capacity has an important impact on the production efficiency of the whole production line.
Feeding is the first step of a crushing production line, which has an important impact on the productivity of jaw breakage. In order to improve the productivity of the jaw crusher, we must first use the heavy duty apron feeder correctly. The following is an important means to improve the output of the crusher.
First, control the size of the crushed raw materials to prevent the phenomenon of stuck cavity and blockage
The measured feed port size can not be used as the maximum feed size, usually to break the feed port width size divided by 1.1-1.25 to measure the feed size of the material, more than the provisions of the large particle size of the raw material is easy to jam the cavity groove. Thus blocking the feed port, the feed port needs to be cleaned and then restarted, and the equipment will be cleaned for a long time and cannot operate normally. Therefore, strict control of the particle size of raw materials is one of the important prerequisites to ensure the normal operation of the jaw crusher.
2. Control the feeding amount to prevent blockage due to excess
Each type of crusher, in the design has been set the crushing output, because the working principle of broken jaw is half-rhythm work, if the input of excessive material, it will cause the material too late to break, and the broken material can not be eliminated in time, resulting in card material. Therefore, both cutting and overfeeding will affect the productivity of jaw fracture.
Third, rhythm feeding, control feeding, to ensure the normal operation of crushing
Raw materials are usually piled up in a larger bin, some enterprises set up a vibration feeder under the bin, through the vibration of the vibration motor, so that the material on the feeder tank moves forward, falls into the crusher to implement material crushing.
This vibrating feeding method is suitable for occasions where the volume of the silo is not large or the silo pressure is not large. For the case of large capacity and large bin pressure, due to the large bin pressure pressed on the vibration feeder, the amplitude will be reduced due to the large bin pressure, resulting in insufficient feed affecting the crusher output
The apron feeder replaces the vibrating feeder and makes full use of the excellent performance of the plate feeder
In recent years, there have been many large sand and stone production lines in China. In the first process of stone crushing, large crushing machines are used, and the crushing output reaches thousands of tons per hour, which puts forward higher requirements for feeding the crusher. The use of vibration feeder has been unable to meet the feeding requirements, based on this situation, for the application of apron feeder provides a huge market space.
The use of heavy duty apron feeder to feed large crushers has the following advantages:
1) Apron feeder can withstand huge warehouse pressure
The new stone production line has a large bin, the bin can store hundreds of cubic meters of stone, if the bin is connected to the vibration feeder, it is obvious that such a large bin pressure is the vibration feeder can not withstand. Due to its special design, the apron feeder can not only withstand the pressure of the bunker, but also withstand the impact of the material.
2) Apron feeder can achieve uniform feeding
The output of the crusher is directly related to the feeding method, if the incoming material is unstable, the material in the crushing chamber will be more and less, which greatly reduces the crushing output. The apron feeder moves forward at a constant speed after the speed is set, and there is no feeding instability.
3) Apron feeder layer height can be adjusted
The apron feeder is placed under the bin, and the height of the material layer outlet can be adjusted to ensure that the height of the material layer on the apron feeder is within the set range.
4)Apron feeder implements frequency conversion speed control
When the crusher breaks different materials, the output will fluctuate, which requires the apron feeder to adapt to the fluctuation of the crusher output. It is necessary to adjust the running speed of apron feeder. By installing frequency converter in the control box, the speed control of the board feeder is realized.
5 Different crushers need to support the corresponding apron feeder
Different models of crushers have different output and different feed particle sizes. The supporting heavy duty apron feeder also needs the correct selection, if the crusher is compared to the mouth to eat, then the apron feeder is compared to the bowl, how big the mouth is with how big the bowl. Here's an example: A PE900*1200 jaw crusher, if it is matched with GBZ2000 wide plate feeder, because the width of the jaw inlet is 1200mm, and the width of the feeder groove plate is 2000mm, in this case, due to the selection of the plate feeder is too large, it will lead to the plate feeder conveying speed is too low, the material layer height is too low, Can not give full play to the performance of the board feeder, but also lead to increased investment costs. At the same time, due to the transition from the size of 2000 to 1200mm, the thickness of the jaw layer of the crusher is not uniform, affecting the output of the crusher and shortening the life of the crushing plate.
