impact crusher working principle
Impact crusher is widely used in various kinds of hard and brittle materials such as rock, abrasive, refractory, cement clinker, quartz stone, iron ore, concrete aggregate, etc. Sand and road sand are particularly suitable. The impact crusher has simple structure, low price, stable operation, high efficiency and energy saving. The material self-lining in the impeller and vortex crushing chamber greatly reduces the wear parts cost and maintenance workload. The impact crusher effectively solves the raw materials such as glass. The problem of iron pollution in the crushing process and the calendar steel problem in the process of steel slag crushing, the ingenious internal airflow self-circulation eliminates the dust dispersion.
Generally speaking, there are many factors affecting the production capacity of the impact crusher. Generally speaking, there are five factors. The following five factors will be described and corresponding solutions will be proposed.
1. Hardness of material: The harder the material is broken, the more difficult it is, and the more serious the wear of the equipment, the slower the breaking speed and the lower the capacity. Therefore, we need to pay attention to the selection of materials.
2, the composition of the material: before entering the impact crusher, the more fine powder contained in the material, the more impact on the crush, because these fine powder is easy to adhere to affect the transport, so the material with a lot of fine powder should be sieved one time in advance, will Fine powder should be screened out from the material as much as possible to avoid affecting the normal operation of the impact crusher.
3. The fineness of the material after crushing of the impact crusher: the fineness requirement is high, that is, the finer the material is required to be broken, the smaller the crushing capacity is. The specific requirements are determined in this respect. If there is no special requirement, the general will The fineness of the material can be set to medium and fine.
4. Viscosity of the material: the greater the viscosity of the material, the easier it is to adhere. The material with high viscosity will adhere to the inner wall of the crushing chamber in the impact crusher. If it cannot be cleaned in time, it will affect the impact crusher. Work efficiency, in severe cases, may also affect the normal operation of the impact crusher. Therefore, when selecting materials, it must be noted that the viscosity of the materials is not too large.
5. Humidity of material: When the moisture contained in the material is large, the material is easy to adhere in the impact crusher, and it is easy to cause blockage during the feeding process, resulting in a reduction in crushing capacity. To solve this problem, we must first strictly control the humidity of the material when selecting materials. If the humidity of the selected material is too large, we can use sunshine or air drying to reduce the percentage of moisture in the material.
In view of the maintenance problems that many users purchase the impact crusher, the manufacturer pays special attention to this problem when designing the impact crusher. The impact crusher we designed is mainly composed of feed port, distributor, overflow, impeller, crushing chamber, counterattack plate, main shaft, frame, motor and other components. It has the characteristics of reasonable structure and stable operation. If there is a fault in operation, the customer can open the observation door to check the internal condition of the equipment, adjust the various parts of the equipment as appropriate, and our technical staff will train the basic operation and maintenance skills. If there is any problem that you can't solve, please call our company after-sales service. Our equipment is a lifetime warranty, we are happy to serve you.
The material enters the impact crusher from the feeding hopper, and the material is divided into two parts through the feeder, and a part of the material enters the high-speed rotating impeller from the middle of the distributor, and is rapidly accelerated in the impeller, and its acceleration can reach hundreds of times of gravity acceleration. And then ejected from the three uniformly distributed flow paths of the impeller at a speed of 60-70 m/sec. First, it is impact-broken with a part of the material falling from the periphery of the distributor, and then impacts together on the material lining in the vortex cavity. It is rebounded by the material lining, impacts obliquely upward to the top of the vortex chamber, changes its direction of motion, deflects downward movement, and the material emitted from the impeller flow channel forms a continuous material curtain. Such a material is subjected to two or even multiple chances of impact, friction and grinding and crushing in the vortex breaking chamber. The broken material is discharged from the lower discharge port. It forms a closed circuit with the circulating screening system. Generally, the material can be broken into 20 mesh or less after three cycles. During the whole crushing process, the materials are crushed and broken by themselves, and are not in direct contact with the metal components, but are impacted, rubbed and pulverized with the material lining, which reduces pollution and prolongs mechanical wear time. The ingenious airflow inside the vortex chamber self-circulates, eliminating dust pollution.
what is impact crusher|working principle, parts and types | quarrying & aggregates
The impact crusher is a highly efficient coarse, medium and fine crusher for medium-hard and softer rocks. Whether in a quarry, mining or Construction waste recycling, the impact crusher can efficiently crush the stone, so that the particle shape, particle size distribution and cleanliness are in line with the strict standards of concrete and asphalt aggregate. Impact crushing equipment not only achieves first-class product quality but also a remarkable throughput.
When the stone falls into the working area of the blow bar (hammer), it is crushed by the impact of the blow bar on the high-speed rotating rotor, and is thrown to the apron for a second impact, and rebounds until the rotating blow bar (hammer) is hit again. This process is repeated until the material is crushed to the required size and discharged from the machine outlet.
Aiming at the problems of the previous generation of impact crushers in terms of crushing efficiency and processing capacity, the CI5X impact crusher optimizes the crushing cavity type, rotor speed and power curve, improves the crushing efficiency and crushing ratio, and makes the finished product The aggregate shape is further optimized, and the gradation curve is more reasonable.
The comprehensive processing capacity of the equipment is increased by more than 15% compared with the previous generation products, which can meet the requirements of high-grade concrete for the preparation of aggregates.
PFW impact crusher is a new type of high-performance hydraulic crusher developed with internationally advanced impact crusher technology. It is very suitable for coarse, medium and fine crushing of various soft and medium-hard minerals and rocks.
PF impact crusher adopts traditional impact crushing technology. After years of design optimization, it has more excellent performance and reliable use. It is the most common medium-hard and soft material fine crushing equipment.
The PF impact crushing cavity and rotor have been optimized in design, and the production capacity and finished product particle size have been improved compared with traditional impact crushing. The counterattack frame and rotor are mechanically adjusted, which is simple and reliable.
all you need to know about crusher liner wear simulation
Crushing machines are used to reduce the size of large rocks into small rocks, sand, gravel, or rock dust. These machines hold feed material between two tangent or parallel solid surfaces and apply adequate force to move the surfaces. The surfaces come closer and crush everything between the two them.
There are different types of crushers available in the market that vary based on their working capability. Some of them are used for primary purpose crushing and others are used for secondary crushing. Similarly, a few crushers are available for tertiary and some for the fourth level of crushing.
Crushers work based on different principles. For example, jaw, cone, and gyratory crushers work based on compression. On the other hand, cutter mills and hammer crushers work based on shear and impact principles respectively.
All crushers come with different types of liners. Similarly, each crusher contains a variety of liners like jaw crusher comes with square tooth liner, wide teeth liners, and coarse corrugated liners, etc. Further, the working mechanism of each liner varies based on its type and crushers.
This article explains the complete crusher liner wear simulation. There are plenty of crushers available in the market. So we cant cover all the liners of crushers in this article. Therefore, we will only discuss a few renowned crusher liner wear simulation. Lets get started
We are selectively explaining the simulation of the 3 most popular crushers liner wear. Jaw and Gyrator crushers are the primary purposes of crushing machines. And, cone crusher is a secondary crushing machine. However, you can use it for primary crushing as well. Lets dive deeper and explore the liner wear simulation of these machines:
Jaw crusher is a primary purpose crushing machine that contains two jaws i.e. stationary and moving jaw. Stationary jaw remains fixed and the moving jaw moves back and forth relative to the stationary jaw. Each jaw contains a liner that is made of manganese steel. These are hard enough to crush the stone and abrasive materials.
The crushing chamber is an area between the two jaws from where crushers receive the feeding material. Swing jaw moves slightly and applies pressure on the rock. Crushing is performed gradually rather than in a single stroke.
The power that moves the jaw comes from the flywheel. The flywheel produces an eccentric motion so that the swing jaw moves back and forth for crushing the object. Both jaws make an acute angle so that the moving jaw moves around the pivot and makes a strong impact on a fixed jaw. As a result, the object between the two jaws turns into small pieces.
It is another most popular type of crusher used for secondary crushing. The major use of cone crusher is in the aggregate, fracking sand, coal, and mining industries. It is a compression-based crusher that squeezes or compresses the objects until they break.
Cone crusher contains two pieces of steel i.e. an eccentrically rotating and stationary piece of steel. The eccentrically rotating piece is known as the mantle and the stationary part is called a bowl. Both parts contain liner wear that actually breaks the hardest rocks.
The area between both parts is called the crushing chamber. You need to place the material in the crushing chamber and it compresses that material between eccentrically rotating and stationary parts. Due to the compression, the material gets smaller and discharge at the bottom of the machine.
The size of the final yield is determined by the gap of both liners. So you can obtain the size of rock according to your need. The main purpose of cone crushers is to crush medium-harness or harder ores or rocks.
A gyratory crusher is another most popular primary rock crushing machine. The working mechanism of the gyrator crusher is almost similar to the jaw crusher. However, the only difference is that it comes with a circular gap. The circular gap is an area between a static conical bowl and a concave mantle.
As the name suggests, the static conical bowl is a fixed area but concave mantle oscillates about the central axis. Both parts have an extremely strong liner that is designed to crush the most abrasive rocks. The main purpose of the gyratory crusher is to perform large-scale rock crushing up to 6000 t/h.
You might be thinking that what is the difference between cone and gyrator crusher. Because both crushers have many similar things. For example, both use a cone-shaped crushing surface and also work on the same crushing principle. So what is the difference?
The first difference between the two is that the gyratory crusher is a primary crushing machine however the other one is a secondary crushing machine. Second, both have different speeds of mantle i.e. gyrators mantle revolves 100 to 200 but cone crushers mantle revolves 500 to 600 RPM.
The other most noticeable difference is the crushing action of the mantle in both crushers. For example, gyratory crushers have all the movement at the bottom of the mantle due to its small angle. However, cone crushers have a greater angle that puts the pivot point below the distributing plate.
We have discussed the three main types of crusher liner wear simulation in this article. There are some other poplar crushers also available in the market like hammer crushers. These crushers have different liner wear simulation. So you should consider a crusher based on your primary or secondary need.
Qiming Machinery is the leading manganese steel, chromium steel, alloy steel, and heat-resisting steel manufacturer in China. We manufacture crusher wear parts, shredder wear parts, mill liners, apron feeder pans, and other wear parts for customers.