I have been engaged in crusher sales for many years. Now let's share the information of hammer crusher.
What is the main purpose of hammer crusher?
Hammer crusher is used to crush all kinds of hard and abrasive materials. The compressive strength of the material shall not exceed 100MPa, and the water content shall be less than 15%. The crushed materials are coal, salt, chalk, gypsum, brick, limestone and so on. The main working part of ring hammer crusher is the rotor with hammer head (also known as hammer head).
Hammer crusher is a first-class crusher that directly crushes materials with the maximum particle size of 600- 1800 mm to below 25 mm Hammer crusher is suitable for crushing medium hardness materials, such as limestone, slag, coke, coal and other materials in cement, chemical industry, electric power, metallurgy and other industrial sectors.
The working principle of hammer crusher mainly depends on impact energy to complete the operation of crushing materials. When the hammer crusher works, the motor drives the rotor to rotate at high speed, so that the materials enter the crusher cavity evenly, and the high-speed rotating hammer impacts and shears the materials, so that the materials are broken.
At the same time, due to the gravity of the material itself, the material rushes from the high-speed rotating hammer to the baffle and sieve bar in the frame, and the material larger than the sieve hole size remains on the sieve plate, which is continuously hit and ground by the hammer until it is broken to the required discharging granularity, and finally discharged out of the machine through the sieve plate.
Crushed by the impact, impact, shearing and grinding of a high-speed hammer. There is a sieve plate at the lower part of the rotor, and the particles smaller than the sieve hole size in the crushed materials are discharged through the sieve plate, while the coarse particles larger than the sieve hole size are left on the sieve plate, and are continuously hit and ground by the hammer, and finally discharged out of the machine through the sieve plate.
Hammer crusher mainly crushes materials by impact. The crushing process is roughly like this. When the materials enter the crusher, they are crushed by the impact of the high-speed rotating hammer. Broken materials get kinetic energy from the hammer head and rush to the baffle and sieve bar in the frame at high speed. At the same time, the materials collided with each other and broke many times. The material smaller than the gap of the screen bar is discharged from the gap, and some larger materials are impacted on the screen bar by the hammer again.
Comparison between impact hammer crusher and stone crusher
Both impact hammer crusher and stone crusher adopt foreign advanced technology, which has the advantages of environmental protection and energy saving. Products are sold to South America, Europe, Africa and other places, and have a good corporate reputation abroad. Impact hammer crusher and stone crusher are commonly used gravel equipment in gravel production line.
Impact hammer crusher is a kind of crushing equipment which uses impact energy to crush brittle materials with medium hardness. At present, due to the appearance of some wear-resistant materials, they have been applied in some metal concentrator. In contrast, impact crusher has greater crushing strength and wider material range than stone crusher. There are many kinds of crushing equipment in the market, each of which has its own characteristics.
What are the advantages of impact hammer crusher compared with stone crusher? The feeding trough and impact plate of impact hammer crusher can be equipped with heating devices to prevent materials from sticking, so it can crush materials with high water content and is not easy to be blocked when crushing. Stone crusher can't use heating to prevent materials from sticking, and can't meet the crushing work of high water content materials. Impact hammer crusher can crush materials with different hardness. Compared with the hardness of the material, its crushing range far exceeds that of the stone crusher. Impact hammer crusher is suitable for both soft materials and very hard materials. This advantage should be analyzed from the structural principle of impact hammer crusher. The plate hammer of hammer crusher is firmly fixed on the rotor through mechanical clamping structure, and it has great moment of inertia when rotating with the rotor. Compared with the stone crusher (the hammer head is suspended), the impact crusher has greater rotor momentum, adapts to crushing hard materials and consumes less energy. The discharging granularity of impact hammer crusher can be flexibly adjusted. The machine can adjust the discharging granularity in many ways, such as adjusting the rotor speed and the gap between the impact plate and the crushing cavity, so as to achieve different crushing effects. Stone crusher does not have this function. When adjusting the discharging granularity, it can only be achieved by replacing the bottom sieve plate, and the crushing effect is not good.