The size of the crushing force is an important indicator to measure the performance of the cone crusher. In the case of the ore size, hardness, moisture and mud content of the ore, the greater the crushing force, the higher the crushing efficiency. The size of the crushing force in the multi-cylinder hydraulic cone crusher currently in service is an important indicator to measure the performance of the cone crusher. Under the condition of the ore size, hardness, moisture and mud content of the ore nature, the crushing force The larger, the higher the crushing efficiency. Magnesium hydrogen Phosphate and Trimagnesium phosphate Magnesium Phosphate,Magnesium Phosphate Solubility,Magnesium Phosphate In Food,Magnesium Phosphate Powder Jiangsu Kolod Food Ingredients Co., Ltd. , https://www.kolodchem.com
In the current service, the multi-cylinder hydraulic cone crusher is designed. Its 16 150mm safety cylinders can work under the maximum pressure of 12MPa when the hydraulic system is designed. The locking force is 400 tons. Due to the processing accuracy of the hydraulic system of the multi-cylinder hydraulic cone crusher, running, rushing, dripping and leaking are common, so the hydraulic system pressure is generally controlled at about 8 MPa, resulting in a small actual locking force. When crushing ore, the bearing sleeve The vibration on the base is very large, and the crusher works under abnormal conditions.
First of all, due to insufficient crushing force, low crushing efficiency, large crushing cycle load, lining wear and tear, and increased power consumption, the entire production system is in a vicious cycle, which is very unfavorable to production and equipment. In order to reduce the product granularity, change the product granularity composition, and reduce the closed-circuit crushing cycle load, some units used measures such as increasing the parallel crushing area and reducing the size of the discharge port. The results not only did not achieve the desired effect, but instead appeared. Difficulties such as “helping†and “biasing†cause the service life of the liner to decrease, the power consumption to increase, and the life of some parts of the crusher to be seriously damaged, and even accidents such as broken shafts and broken teeth.
Secondly, due to insufficient locking force, the bearing sleeve slope and the frame contact inner inclined surface are “ironed†in serious cases. The inclined surface is convex and concave, which is very destructive to the frame and the support sleeve. Over time, the rack and support sleeves are severely damaged and even scrapped, resulting in significant losses.
The old cone crusher mainly has the following defects:
The old PYD2200 cone crusher generally has the disadvantages of small upper mine mouth, low parallel crushing area, low number of revolutions per minute of moving cone, large product granularity, large cyclic load during closed road crushing, and low productivity.
The original design of the PYD2200 cone crusher is 400 tons, and the working pressure of the cylinder is 12Mpa. Because the upper casing wall of the safety cylinder is too thin, the retaining ring of the lower part of the safety cylinder has no adjustment function and the hose is broken, the sealing is not strict, and the hydraulic oil leaks, and the working pressure cannot be guaranteed.
The original design PYD2200 cone crusher adjustment sleeve and the support sleeve are locked, and the inner locking cylinder installed in the support sleeve is locked, the actual locking force is not enough, the vibration of the crusher is very large during operation, and the support sleeve slope and machine appear. The phenomenon of "ironing" on the inner inclined surface of the frame, the convex surface and the concave state on the inclined surface, is very destructive to the frame and the support sleeve.
The spherical bearing frame and the frame of the original design PYD2200 cone crusher are interference fit, and the circumferential direction is fixed with a square key or a positioning pin. After several times of disassembly and assembly, the interference fit will become loose, because the crusher is During the vibration in operation, the spherical bearing frame will vibrate in the frame, and the inner mating surface of the frame will wear more and more, which will cause the spherical bearing frame to sway in the frame, accelerate the wear of the spherical bearing, and cause the moving cone to “flyâ€. The device is not working properly.
The original design PYD2200 cone crusher drive shaft frame and the frame joint over-coupling plus internal bolts fixed, the crusher in the production process, due to the impact of abnormal factors such as large ore, iron, etc. The fixing bolts often break, but it is very difficult to take out the broken bolts broken in the threaded teeth in the frame. It is often necessary to lift the main motor and pull out the drive shaft frame before the bolt can be pulled out. The inspection time is long and the maintenance work is large.
The water seal groove of the original design PYD2200 cone crusher is integrated with the spherical bearing frame. During the running process, the lower mouth of the moving cone moves in the water tank. The water surface in the water tank fluctuates greatly, forming a vacuum, and the dust is sucked in. When entering the lubricating oil, it affects the lubrication of the gears and bearings, so that the crusher can not work normally.
The main idea to improve the crushing capacity of the cone crusher:
The productivity of the crusher is related to the crushability, specific gravity, particle size composition of the ore, the type and specifications of the machine, the crushing ratio of the operating conditions of the crusher, the load factor, the uniformity of the ore, and the like. The configuration in the beneficiation process is related.
The work of improving the production capacity of fine crushers at the Meishan Mining Company Concentrator was carried out under the condition that the entire beneficiation process was determined and the ore properties were unchanged. Combined with the above analysis, the problems of restricting the efficiency of ore dressing and crushing are mainly internal and external. The internal cause of the problem is the lack of crushing capacity. It is the core factor that restricts the productivity of crushing, and it is also the productivity improvement of crusher crushing. The main starting point. At the same time, on the other hand, how to improve the deficiencies of specific structures, reduce equipment damage or reduce the difficulty of maintenance is also an effective way to improve the productivity of the crusher. 
The improvement of the crushing capacity is mainly related to the following factors: the size of the crushing force, the structure of the crushing chamber, the swinging frequency of the moving cone, etc. The transformation is mainly carried out from the following two aspects.
Optimization of the structure of the crushing chamber The structural parameters and shape of the crushing chamber play an important role in the crushing process of the material. It is important for determining the productivity, power consumption, lining wear, product particle size uniformity and qualification rate. factor. Therefore, the new crushing chamber is redesigned, and the number of crushing of ore in the crushing chamber is increased to achieve the purpose of improving the productivity of the crusher.
Improvement of crushing force 1 For a multi-cylinder hydraulic cone crusher, the crushing force is mainly related to the insurance force of the safety cylinder, and the magnitude of the insurance force is related to the diameter of the safety cylinder and the pressure of the hydraulic station. Increasing the diameter of the safety cylinder and increasing the oil supply pressure of the hydraulic station can increase the crushing force, thereby achieving the purpose of improving the productivity of the crusher.
Reprint, please indicate the source, Shanghai Yuli Road and Bridge Equipment Co., Ltd. http://://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn