304 North Cardinal St.
Dorchester Center, MA 02124
304 North Cardinal St.
Dorchester Center, MA 02124
The hammer crusher is a section crusher for crushing materials with maximum size of 600-1800mm directly to 25 or less. The hammer crusher parts mainly consists of the box, rotor, hammer head, impact liner, screen plate and other parts. In this article, the main hammer crusher parts of will be introduced in detail.
The frame housing of the hammer crusher consists of the lower body, the rear upper cover, the left side wall and the right side wall, which are connected to each part by bolts and welded with steel plates, or can be made into a box structure.
Along the center line of the rotor, the frame of the hammer crusher can be divided into two parts: upper and lower frame, which are connected with each other by bolts.
The upper part of the upper frame is the inlet, and the internal part of the frame is equipped with manganese steel liner in contact with the ore, which is convenient for replacement after wear. The lower part of the frame is fixed directly to the concrete with foot bolts.
In order to prevent ash leakage, shaft seals are provided at any part of the casing where the shaft is in contact with the casing.
In addition, small doors are provided on the side walls and lower body of the hammer crusher for installation and maintenance.
The working principle of hammer crusher is to crush the material by impacting the hammer head at high speed, so the transmission device is driven directly by the motor through the flexible coupling to rotate the main shaft, which is installed in the bearing blocks on both sides of the frame through the spherical spherical ball bearings.
The bearings of the hammer crusher need to be lubricated regularly with dry oil to ensure the normal operation of the equipment during use.
The hammer head of the hammer crusher is the main working part like the plate hammer of the impact crusher, which is easy to wear in use, so the hammer head is made of high strength wear resistant material, generally high manganese steel is used.
The shape of the hammer head is mainly plate and block. The block hammer head is heavier than the plate hammer head and is mainly used for crushing materials with higher block size and hardness and longer length. In recent years, a new round hammer head has been developed, referred to as the ring hammer.
The ring hammer is suspended on the cross-shaped rotor, which not only can impact and crush the material with the rotor’s revolution, but also can rotate around the shaft and crush the material by grinding, so the power consumption is low. The crusher equipped with ring hammer is mainly used to crush materials such as coal.
The rotor of a hammer crusher consists of a main shaft, a hammer disk, a pin, a hammer head and so on. The main shaft is the most important part of the hammer crusher to support the rotor. The weight and impact force of the rotor and hammer head are all borne by it, so the material of the main shaft needs to have high toughness and strength.
The hammer head of the hammer crusher is suspended in the pin hole on the hammer disk and fixed with lock nuts at both ends of the pin to prevent the axial movement of the hammer disk and the hammer head.
The hammer disk cannot avoid the impact and wear of the material during the operation of the equipment, and the hammer head is the main wear part, so both of them need to be made of high strength and wear resistant material.
The impact liner of a hammer crusher is subjected to the impact and abrasion of the material during the operation of the hammer crusher. It is made of high manganese steel casting quenched and strengthened to ensure the superior wear resistance and impact resistance of the impact liner.
The impact liner of the hammer crusher is as easy to wear as the hammer head, so it is important to pay attention to good daily maintenance and care.
The screen plate of a hammer crusher consists of a curved screen frame and a screen plate, which is set under the rotor.
The screen plate of the hammer crusher is made of many pieces, which are fixed to the screen frame by using self-weight and mutual extrusion, and the screen plate has small inner and large outer conical screen holes.
When the hammer head wears, adjusting the up and down position of the bolt can change the size of the gap between the end of the hammer head and the surface of the screen plate to ensure that the gap is within a certain range, so as to ensure a certain range of product size.
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Hammer crusher parts replacement steps and safety measures.
Hammer crusher is one of the main equipment for fine crushing of limestone, coal or other brittle materials below medium hardness in metallurgy, building materials, chemical industry, hydropower and other industries, which has the characteristics of large crushing ratio, high production capacity and uniform products.
Hammer crusher is still widely used in mining, smelting, building materials, highway, railroad, water conservancy, chemical and other industries.
The hammer head of the hammer crusher parts is an indispensable part of the hammer crusher crusher and the main wear-resistant part of the crusher. The good or bad hammer head and the wear-resistant strength of the hammer crusher directly affect the efficiency and effect of the hammer crusher.
With the rise of construction waste disposal market, hammer crusher also makes a great contribution to waste disposal. Hammer crusher always fails in the process of crushing waste treatment. After careful examination, it is found that the hammer head of hammer crusher is severely worn, thus we know the importance of hammer head to crusher equipment.
Choose good hammer crusher parts to extend the service life of hammer crusher crusher, there are three suggestions below.
The main working part of the hammer crusher is the rotor with the hammer head. The rotor consists of a main shaft, a disc, a pin and a hammer head. The motor drives the rotor to rotate at high speed in the crushing chamber. The hammer head is the main wearing part, and the good or bad hammer head directly affects the crushing efficiency of the crusher.
Therefore, it is very important to choose the wear-resistant hammer head of hammer crusher. When choosing hammer head of hammer crusher, generally the hammer head is judged from five aspects: material, structural design, manufacturing process, technical parameters and feeding conditions.
During the work of the hammer head, in addition to the impact, it is also subject to the impact of the material, so long-term repeated use will damage the working surface of the hammer head, so it is also important to improve the resistance. The hammer head part can be made of high hardness and high wear resistance alloy steel, and the hammer shank part is made of high toughness manganese steel material, because both alloys are metallurgical liquids.
The liquid compound solves the problem of high hardness, easy to break, toughness and non-wear resistance of the alloy material. Thus greatly improving the service life and efficiency of the hammer head. The larger the hammer head, the greater the wear resistance. To improve the wear resistance of the hammer head, it is necessary to increase its hardness.
There are many factors that affect the life of hammer head of hammer crusher. For example, the size of the feed material greatly exceeds the maximum size limit. When the hammer head is cast, there is an error in quality, and it may be that the material accumulated inside the crusher is not cleaned up in time. Reasonable structural design makes up for the lack of material hardness and improves the service life of hammer head of hammer crusher.
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