(1) Working organization. 17 by the broken cone and the fixed cone with manganese steel backing (i.e., the adjustment ring in FIG. 10) composed. Between casting zinc alloy backing plate and the cone to ensure that it closely. The crushing cone 17 is press-fitted on the main shaft 15, and its lower surface has a spherical shape and is supported by a spherical bearing. The lower end of the spindle is inserted into the tapered bore 31 of the eccentric bushing, the tapered bore in the eccentric sleeve liner made of copper which contains cyan MC-6 or nylon and other materials. When the motor drives the eccentric bushing to rotate through the bevel gears 4, 5, the main shaft supported by the spherical bearing and the crushing cone perform a swing motion, thereby achieving the purpose of crushing the ore. Â Â Â (4) Safety devices. The spring-loaded cone crusher utilizes a spring mounted around the frame as a safety device. When the crusher is overloaded, the support ring and the adjusting ring supported on the spring are forced to lift upwards to compress the spring, so that the size of the discharge opening is increased, and the non-crushed material can be discharged, and then the support ring is supported by the spring force. And the adjustment ring is automatically reset to re-break. Pellet Machine,Wood Pellet Machine,Feed Pellet Machine,Biomass Pellet Machine HUNAN JINSONG MACHINERY CO., LTD , https://www.sheller.nl
(2) Adjustment device. The adjustment device of the cone crusher is actually a part of the fixed cone, and consists of an adjustment ring, a support ring 8, a lock nut 18, a push cylinder 9, a lock cylinder and a piston 19. The support ring 8 is mounted on the upper side of the frame 7 and is in close contact with the frame by means of a tension spring 6 around the crusher. There are zigzag threads at the contact faces of the support ring 8 and the adjustment ring. The support ring 8 is provided with two pairs of fingers and a pair of push cylinders. The locking hydraulic cylinder and the piston are mounted on the upper portion of the support ring 8. A serrated thread is also formed at the contact surface of the lock nut and the adjustment ring. When the crusher works normally, the locking hydraulic cylinder is filled with pressure oil, so that the zigzag thread of the lock nut, the support ring and the adjusting ring contact surface are closely inclined to achieve the purpose of locking. When adjusting the discharge opening, first unload the locking hydraulic cylinder to loosen the serrated thread, then operate the hydraulic system, start to push the hydraulic cylinder, drive the adjustment ring to rotate, and the fixed cone rises due to the transmission of the serrated thread. Or drop, so as to achieve the purpose of adjusting the discharge opening.
(3) Dust-proof device. The dustproof device of the cone crusher is shown in Fig. 2, and the water tank 1 (the annular groove 23 in Fig. 1), the drainage groove 2, the retaining ring 3, the annular ring 4 (i.e., the spherical collar 22 in Fig. 1) and the block Ring 5 and so on. The water pump is sent to the water tank 1 through the inlet pipe, and then overflows to the drain tank 2, and is discharged through the drain pipe. Due to the blocking action of the annular ring 4, the dust can not enter the inside of the machine and fall into the water tank 1 and be carried away by the circulating water flow, thereby protecting the transmission parts of the machine. [next]
Obviously, the spring is both a safety device and will generate a certain crushing force when it is broken. Therefore, the degree of tension has an important influence on the normal operation of the crusher, so that when the spring is tightened, an appropriate compression margin should be left.
2. Construction of Hydraulic Cone Crusher Although the discharge opening adjustment device of the above-mentioned spring cone crusher adopts hydraulic operation, the structure is still a thread adjustment device. Therefore, when working, the thread is often blocked by dust, making the adjustment laborious, time consuming, and must be stopped. In addition, it is also inconvenient to take out the non-crushed material stuck in the crushing chamber. In order to overcome these shortcomings, the hydraulic cone crusher has been vigorously produced and promoted at home and abroad. This cone crusher not only adjusts the discharge opening easily, but also increases the safety of overload protection, which is the development direction of the cone crusher.
China has been developing hydraulic cone crushers since the 1960s. After more than 40 years of hard work, it has reached the international advanced level. Hydraulic cone crusher is generally divided into three types: top single cylinder, bottom single cylinder and multi-cylinder according to the installation position and quantity of its hydraulic cylinder. Among them, the multi-cylinder hydraulic cone crusher mainly changes the spring of the spring cone crusher into a hydraulic safety cylinder, and changes the mechanical lock to hydraulic lock, and hydraulically pushes the hydraulic cylinder to replace the mechanical adjustment. Its overall structure still retains the characteristics of the spring cone crusher. However, due to the increase in hydraulic cylinders, the mainframe structure is relatively complicated, which increases the maintenance workload.
China's use of the bottom single-cylinder hydraulic cone crusher, its working principle is the same as the spring cone crusher, but the adjustment ring, support ring, locking device and spherical bearing of the spring cone crusher are eliminated. Figure 3 is a structural view of a bottom single-cylinder hydraulic cone crusher produced in China. The structure of the crusher and the spring cone crusher is similar, except that the adjustment and the insurance are realized by a hydraulic cylinder and a hydraulic system supported on the bottom of the main shaft of the moving cone. By increasing or decreasing the amount of high pressure oil in the hydraulic cylinder, the main shaft and the crushing cone can be raised or lowered to achieve the adjustment of the discharge opening. The principle is shown in Figure 4. [next]
Cone crusher construction
At present, the most widely used cone crushers in China are mainly spring-loaded cone crushers and hydraulic-safe cone crushers. The structural features are described below.
1. Structure of spring insurance cone crusher Figure 1 shows the spring insurance 1750 cone crusher, which is a typical equipment for crushing or fine crushing hard ore in China. The structure is basically the same as that of the gyratory crusher, but its working mechanism, adjusting device, dustproof device and safety device are different.
The overload protection of the crusher is achieved by an accumulator with an inert gas. As shown in Fig. 5, the air pressure of the accumulator is normally slightly higher than the oil pressure in the hydraulic cylinder, so that the oil cannot enter the accumulator. Once overloaded, the sudden increase of the crushing cone will cause the oil pressure in the hydraulic cylinder to rise. When the oil pressure rises above the air pressure in the accumulator, the oil is pressed into the accumulator, so that the crushing cone follows. Decline, the discharge opening increases, and the non-crushed material is discharged. When the overload is removed, the oil is re-pressed back into the hydraulic cylinder due to the action of the accumulator, and the crushing cone can be restored to the normal position to continue working. In addition, China began to manufacture rotary disc type ultra-fine crushers in the early 1990s.