How to choose single-cylinder and multi-cylinder hydraulic cone crusher?

2021-09-16 | Author: Shibang Group

Currently, cone crusher is one of the most widely used mining machinery and equipment. With the development of the market, there are many types of cone crushers at home and abroad, and the performance of each type of crusher is not the same. At present, spring cone crusher and hydraulic cone crusher are more commonly used, and hydraulic cone crusher is divided into single-cylinder hydraulic cone crusher and multi-cylinder hydraulic cone crusher .

In the following part, we mainly introduce the differences between single-cylinder hydraulic cone crusher and multi-cylinder hydraulic cone crusher and their features.

In addition to the structural differences (such as main structure, components and spare parts) between single-cylinder hydraulic cone crusher and multi-cylinder hydraulic cone crusher, the main differences are in the following aspects:

Different discharge opening adjustment methods

Single-cylinder hydraulic cone crusher:

In normal operation, oil is injected or discharged to the spindle cylinder through the oil pump, so that the spindle moves up or down (the spindle floats up and down), and the size of the discharge opening is adjusted. This adjustment method may cause the discharge opening to be more difficult to lock when crushing hard ore.

Multi-cylinder hydraulic cone crusher:

The adjustment cap is adjusted by a hydraulic pusher or a hydraulic motor to drive the adjustment ring to rotate in the support sleeve (the fixed cone screw rotates and moves up and down) to achieve the adjustment effect. The advantage of this adjustment method is that the discharge opening is easy to lock.

Different ways to release the iron and clear the cavity

Singly-cylinder hydraulic cone crusher:

When there is iron enters the crushing cavity, hydraulic oil is injected into the accumulator, and the main shaft falls; after releasing the iron, the accumulator presses the oil back, and the crusher operates normally. When clearing the cavity, a hydraulic pump is also used.

Multi-cylinder hydraulic cone crusher:

When unbreakable foreign matter passes through the crushing cavity or the machine is overloaded for some reason, the hydraulic safety system realizes insurance, and the discharge opening is enlarged, and the foreign matter discharged from the crushing cavity. If the foreign matter stuck in the discharge opening, the cavity clearing system can be used to further enlarge the discharge opening and discharge the foreign matter out of the crushing cavity. Under the action of the hydraulic system, the discharge opening is automatically reset and the machine resumes normal operation.

Comparison of lubrication system

Single-cylinder hydraulic cone crusher:

Two oil inlets are filled with lubrication oil:

one is from the lower end of the main shaft to lubricate spherical bearings, spherical bushes, frame bushes, main shaft bushes, and then lubricate bevel gears; The other way enters from the end of the drive shaft to lubricate the drive shaft bushing, and then the two ways of oil are discharged from the same oil outlet.

Multi-cylinder hydraulic cone crusher:

One enters the machine from the oil hole at the lower part of the machine and reaches the middle of the main shaft, it is divided into three branches: the inner and outer surface of the eccentric sleeve, the oil hole in the middle of the main shaft reaches the ball bearing, and the small and small bevel gears are lubricated through the holes;

The other one enters the oil through the hole on the transmission shaft frame to lubricate the transmission bearing, and the oil returns through the oil return hole in the lower part of the small bevel gear and the oil return hole on the dust cover.

Comparison of parts that provide crushing force

Single-cylinder hydraulic cone crusher is similar to the spring cone crusher. Therefore, the main shaft and the movable cone are supported by the base, and the eccentric sleeve drives the main shaft to provide crushing force.

The main shaft of multi-cylinder hydraulic cone crusher is thick and short, and its diameter can be designed to be very large. It stands directly on the frame instead of on the eccentric sleeve and provides high bearing capacity. The eccentric sleeve directly drives the moving cone to provide crushing force.

Different applicable materials

When crushing soft ore and weathered ore, the single-cylinder hydraulic cone crusher has the advantages of large throughput, and when crushing medium-hard and high-hard ore, the performance of multi-cylinder hydraulic cone crusher is more outstanding.

For fine crushing of medium-hard and hard ores, under the same specifications, multi-cylinder cone crushers can produce more qualified products. Generally speaking, the higher the rock hardness, the greater the difference between single-cylinder and multi-cylinder operations.

Maintenance

Single-cylinder cone crusher has simple structure and reliable performance: one hydraulic cylinder, simple and compact structure, low failure rate and low production cost.

The top or side of multi-cylinder hydraulic cone crusher can be disassembled and assembled, and maintenance is quick and convenient: all parts can be disassembled and maintained from the top or side, the moving cone and the top cone can be disassembled and installed easily, without dismantling the mounting frame and fastening bolts, so that the daily replacement is more convenient.

Comparison of advantages and disadvantages

Advantages and disadvantages of single-cylinder hydraulic cone crusher

Advantages

Compared with multi-cylinder hydraulic cone crusher, single-cylinder hydraulic cone crusher has simple fuselage structure and fewer spare parts. In terms of appearance, the design of single-cylinder hydraulic cone crusher is more exquisite. Due to the simple structure and low manufacturing cost, the price of single-cylinder hydraulic cone crusher is also lower than that of the multi-cylinder hydraulic cone crusher.

In the actual operation process, single-cylinder hydraulic cone crusher is easy to install and maintain. And from a technical perspective, the single-cylinder hydraulic cone crusher has technically improved the sliding bearing. The improved equipment can adapt to higher speeds, increase the swing speed of the spindle, and make the finished products specifications meet with the requirements, and the output capacity is also higher.

Disadvantages

The biggest disadvantage of single-cylinder hydraulic cone crusher is that it has only one oil cylinder, so the crushing force is smaller than that of multi-cylinder hydraulic cone crusher. While processing rocks with higher hardness, multi-cylinder hydraulic cone crusher is a better choice.

Advantages and disadvantages of multi-cylinder hydraulic cone crusher

Advantages

Compared with traditional spring cone crusher, multi-cylinder hydraulic cone crusher has been partially upgraded and improved and its structure is reasonable. The equipment adopts multi-cylinder hydraulic technology to make the crushing ratio relatively large. Under the condition of ensuring that the output capacity meets the standard, the energy consumption is also controlled, and it is suitable for many rocks, especially suitable for crushing rocks with hardness below 300Mpa.

Multi-cylinder hydraulic cone crusher has a special crushing cavity design, and the production capacity is greatly improved. The semi-automatic hydraulic adjustment of the discharge opening can effectively control the size of the material, and the finished products can reach the specifications required. So it is more economical and practical to use.

Multi-cylinder hydraulic cone crusher uses a high-strength monolithic cast casing with over-iron protection, which is safe and reliable. No matter how hard the crushed stone is, the performance of the equipment is very stable and the service life is long.

Disadvantages

Multi-cylinder hydraulic cone crusher adopts a labyrinth-type sealing structure, which can prevent dust. However, if it is a manufacturer with less experience or poor manufacturing technology, the labyrinth-type sealing property will also have dust ingress and it may cause difficult to adjust the discharge opening. So, customers should choose manufacturers with good brand reputation.

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