Impact crusher is a new and efficient crushing equipment.Suitable for coarse,medium, and fine crushing of materials with particle size not more than 500mm and compressive strength not exceed 350MPa.Materials can be crushed by impact crusher are mainly slag, clinker, limestone, coal, coke, etc., Impact crusher designed in YIFAN is widely used in energy, cement fields,and railways, highways, construction, chemical and other industries.
Because the collision with the stone materials is inevitable , so it requires periodic maintenance in the process.How to maintain the impact crusher? 1. Regular inspection .Open the door to check the wear degree of the internal parts,such as backing ring,liner and impeller flow channel lining board,circular plate and wear resistant block,if there is any part worn out,it should be replaced or repaired at the same time to ensure smooth operation of the impeller,the impeller should be replaced or ask the manufacturer to repair. 2. It's forbidden to open the peep door to observe the internal working condition while working to avoid danger. 3. Check the lubrication system regularly to ensure the operation of impact crusher. 4. Tightening force of v-belt should be adjusted to the right size in order to ensure uniform v-belt load, when dual motor drives, the v-belts on both sides should be divided in groups to ensure the length of each group as homogeneous as possible, the electric current difference of two motors should be adjusted to no more than 15A. Main products of Yifan include jaw crusher, impact crusher, impact crusher, cone crusher, mobile crusher station, sand production line, linear vibrating screen, circular vibrating screen, sand washing machine , feeder and other crushing equipment . Feel Free to contact us if you need any of our products.
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Compared with traditional stone crushers, Cone crusher is a more advanced and very popular equipment now. Cone crusher has the ability to crusher various materials and its processing efficiency is higher. Therefor, users are very satisfied with the machine. This is why cone crusher is todays mainstream equipment of stone crushers.
Tip 3: Change regularly lubricating oil. When oil gets dirty, the bad lubrication will lead to accelerated wear of gears, bowl shaped tiles and shaft sleeve, even the damage of shaft sleeve, so the replacement of oil is a must.
Tip 4: Check regularly slip rings fixing. If dust sealing slip ring becomes loose or falls off in the processing of crushing, a great amount of dust and mineral sand will enter the cone crushers body, thereby preventing the equipment from normal processing, even badly damaging the machine.
Tip 5: When water in oil forces oil level up, adjust water pressure to make it is slightly lower than oil pressure; check and repair the part of leaking; adjust water supply; clean up water pipes and tank and change new oil. Water in oil is caused by water pressure in cooler higher than oil pressure, leaking of cooler, over water supply and clogged pipes. So we can use the ways above to solve the problem.
In fact, maintenance is a trivial job. Its ordinary maintenance work that influences the operating of equipment and its service life. Zhongde Heavy Industries is a leading brand of cone crusher. In our company, product quality is assured and after-sale service is good. Welcome to contact us online and tell us your needs.
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Crushers are used in the mining industry, construction, and other sectors to break large rocks down into smaller, more manageable pieces. There is a wide range of crushers available that employ different physical methods to achieve this goal. Below, well look at the various types of crushers offered and explore the best methods for keeping your crusher machinery in top condition.
A jaw crusher applies pressure to material with a movable lever against an immovable wall. The force exerted in the crushing chamber is generated and maintained by a flywheel moving the swing jaw, while the stationary jaw provides the resistance. Between the two surfaces, heavy materials such as stone and ore are broken into smaller pieces.
Often used as a secondary crusher to a jaw crusher especially in mining, quarrying, or other applications where stone and rock need to be reduced to finer grades gyratory crushers employ a circular movement to crush materials. Gyratory crushers use manganese steel surfaces, which are harder than stone, making them suitable for breaking down hard materials. The pieces continue to be crushed via the rotational movement of these opposing surfaces (usually one semi-static, and the other in full rotation) until the pieces are small enough to fall through the crushing chamber and into a collection bin.
Cone crushers use a rotating spindle with a hard encasement mantel to break down materials between the hardened surface and concave bowl. As materials fall through this compression area into a secondary area, the material is crushed again. This process continues until the material being crushed reaches the designated size and falls into the collection pile.
Commonly associated with the agricultural industry, grinding mills are a type of crusher that creates a compression chamber which crushes, grinds, and cuts material. Grinding mills are typically used for softer materials. Stone wheels grind grain or other items into a fine powder through weight and the abrasiveness of the grinding surface. Different texturing and channeling can allow for different levels of grit to be created, as well as increasing or decreasing resistance. Through constant rotation of the aggregate and the friction it creates, materials may be broken down to a very fine level.
Regular maintenance is critical when it comes to the safe and effective operation of any milling or crushing machine. These machines endure enormous amounts of stress for extremely long periods of time, relentlessly crushing incredibly hard materials down to usable levels. As material is reduced, it also creates significant dust and debris, which can also affect performance and create premature wear.
Given the high-impact stresses experienced by crushing equipment, even slight damage can compound quickly. Keeping up with your crusher maintenance schedule is crucial to keeping your equipment running and avoiding unexpected downtime.
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Efficiency can be defined by the ratio of the work done by a machine to the energy supplied to it. To apply what this means to your crusher, in your reduction process you are producing exactly the sizes your market is demanding. In the past, quarries produced a range of single-size aggregate products up to 40 mm in size. However, the trend for highly specified aggregate has meant that products have become increasingly finer. Currently, many quarries do not produce significant quantities of aggregate coarser than 20 mm; it is not unusual for material coarser than 10 mm to be stockpiled for further crushing.
Cone crusher is the main equipment of secondary and tertiary crushing, which can crush all kinds of medium hard and hard materials. However, many investors and operators find that sometimes even if the production is full, the capacity of cone breaking is still not high. To make sure you make the most of the cone crusher, we share 10 tips to maximize the productivity of the cone crusher to help you.
If you want a stable output, quality and production line load of sand and gravel products, you must first ensure a consistent closed-side discharge setting (CSS), otherwise it will easily cause the product size to become larger, which will affect the entire crushing system.
If the CSS of the cone crusher is set to 10mm, due to negligence in inspection and equipment wear, the parameter is expanded to 13mm, then the aggregate of the equipment less than 10mm will be reduced by 15%, and the production efficiency of the cone crusher will be significantly reduced, which will eventually lead to Investors and operators lose part of their profits. It is best to check the settings of the crusher by a per-shift basis.
If a cone crusher cannot maintain reasonable cavity levels, the grain shape of its products will not be consistent, and the output will be affected. The proportion of flake aggregate in the cone crusher operated by half cavity will increase.
The hungry crusher is an inefficient crusher. Insufficient material filling in the crushing cavity will not reduce the burden of cone crushing, but it will affect productivity and machine reliability, as well as increase liner wear and product defect rates.
According to the working principle of cone crusher, the actual power of cone crusher should not be less than 40% of the rated power. In order to maximize the productivity, the actual power of the cone crusher should be kept between 40%-100% of the rated power, and 75%-95% of the rated power during operation is the best choice.
If the feeding point is misaligned, the proportion of sheet products will increase, resulting in a low finished product qualification rate. It will also increase the wear of the liner and affect the stability of the machine.
Generally, fine particles will accumulate at the bottom of the conveyor, and coarser particles will accumulate at the top. When entering the crushing cavity, larger stones will accumulate on one side of the crushing cavity, and small stones will accumulate on the other side, which will cause the accumulation and blockage of the side where the small stones gather, and cause the adjustment ring to shake. Operators will be forced to increase the discharge port parameters, resulting in increased product particle size. A long time will also cause problems such as damage to the adjustment ring, resulting in greater production losses.
Reasonable use of buffer silos/hoppers and variable-speed feeding devices (conveyor belts, vibrating feeders) keep the cone crusher in a full cavity state, and the volume of cone failure will increase by 10%.
Slightly increase the parameters of CSS, and try to ensure full cavity operation. The advantage of full cavity is that there will be a rock-to-stone process in the crushing cavity, which can maintain the product grain shape.
Generally speaking, the problem of conical crushers adjustment ring beating or exceeding the rated power is caused by material blockage, feeding eccentricity, uneven feeding, excessive fine material in the feeding, large proportion of mud, and incorrect use of liners. It may also be because the operator has made the CSS too small.
If the proper drive belt tension is not maintained, the motor is not maintained correctly or neglected, then the motor belt may slip and the crusher speed may drop during work. The throughput of the crusher with reduced speed will also decrease, and the power consumption will increase sharply, increasing operating costs.
The speed monitoring device can be installed on the intermediate shaft and other positions, connected to the PLC or directly connected to the alarm device. Once the speed drops, the maintenance personnel can be notified to adjust the belt, which can extend the life of the belt while ensuring excellent productivity and energy consumption.
Too much fine material is usually caused by the problem of the vibrating screen, which may be caused by insufficient screen hole diameter or insufficient screening capacity. This will lead to insufficient power utilization and abnormal increase in energy consumption during the crushing process.
According to experience, for the secondary cone crusher, the proportion of fine material in the feed should not exceed 25%. For the tertiary cone crusher, the proportion of fine material in the feed should not exceed 10%.
For small and medium-sized cone crushers, the maximum distance from the feeding equipment to the top of the crusher is about 0.9 meters. If the feeding distance is too large, the stone will easily impact the crushing cavity at high speed, causing impact load on the equipment, resulting in additional maintenance costs and low output.
As we all know, aggregate is the main building material including sand, pebbles, gravel, brittle rocks, and other coarse and fine aggregates applied in of expressway, high-speed railway, water conservancy projects. Facing the arrival of the peak period of high-speed railway construction in China, the market demand for aggregate and concrete is particularly strong. So, the need for high-quality crushing equipment and mature manufacturing technology in various constructions is increasing greatly. But as big equipment in the mining machinery industry, the cost price of the crushers like mobile rock crushers, impact crushers, jaw crushers will make every customer be very concerned about its service life, and how to maximize its valuable use, especially when encountering high-temperature weather. In order to achieve the protection of the machine, make it normal operation, wed better know what factors we should do to guard against in the course of operation.
When there comes May, the temperature of many parts of China has reached more than 30 degrees, and the continuous high-temperature environment will bring many difficulties to the use of rock crushers especially for portable rock crushers including semi-portable rock crushers and tracked crushers because of outdoor working and other mining equipment. Summer is rainy, humid, so it will also affect the service life of mining equipment. So, are there any measures to reduce the impact of high temperature on crushing equipment, to ensure the normal production of equipment?
In a high-temperature environment, the crushers own temperature will rise, and be prone to unpredictable anomalies, such as suddenly shut down, spindle broken and other malfunctions. Because of the principle of hot and cold contraction, high temperature will cause the parts of the crusher to expand, resulting in more friction and deviation in the bite of the components. That will not only affect the production progress, also make the temperature further increase.
The high-temperature environment will make the crusher oil temperature increase, oil and viscosity decreased and partial oil film damage. The lubrication effect between components and bearing carrying capacity is reduced, and more, lubricant carbonization resulting in burning itself.
High temperature has certain harm to the engine, hydraulic system, circuit, etc. of the mobile rock crushers. The hydraulic system in a high-temperature environment will often burst pipe, joint oil leakage, solenoid coil burning, hydraulic valve stuck, noise and other failures. Accumulator system would also be damaged because of high hydraulic oil temperatures. Aging circuits in the summer can easily cause the outer skin to crack due to the metals thermal expansion and cold contraction, resulting in short circuit failure. Whats more, The electrical components in the control cabinet or counter are also prone to failure in the high temperature, and the key control components such as the controller and PLC may also be malfunctioning like a crash, slow operation, and control failure.
Working long hours at high temperatures will lead to the poor performance of equipment lubrication systems, volatile oil, chassis, and other transmission systems prone to wear while creating the impact to paint layer, brake system, clutch, throttle control system and metal structure. Besides, it is also manifested in the high temperatures: easy to produce gas resistance resulting in the inability to supply oil, reduce the performance of the engine intake system and the sealing, increase fuel consumption because of engine oil leakage.
So, how to reduce the impact of the high-temperature environment on mine crushers so that to maintain the normal production of equipment? China Hongxing advises that people can start with the following:
1. Seriously do a good job of crusher equipment daily maintenance work. Regular inspection of equipment, change butter, adjust belts, check core components and wear-resistant parts. Operators should often check the values on various temperature meters in their work, immediately stop to inspection when finding problems. If you cannot find the malfunctions once in a while, please never force it to work without maintenance.
2. Timely clean up the motor body oil and dust to ensure that the engine can keep good heat dissipation. Although some of the equipment nowadays is equipped with dust-proof systems that reduce the probability of downtime, the dust problem becomes more serious in summer due to high temperatures and dry air. For example, operators should regularly check the fixed bolts fixed crushers to prevent dust seals and slip rings fall off because when a large amount of dust and mineral slag into the body, it will result in the crushing machine scrapping or major economic losses.
3.Changing the appropriate oil viscosity grade for the equipment because of the general summer oil viscosity grade than other times appropriately higher. Motor oil and all over the lubricant need to be replaced using summer oil, and please often check whether there is oil leakage.
5. When the crusher machine is in operation, people should always pay attention to the temperature of the crusher bearing because in normal working conditions bearing temperature rise should be in the 35-70 degrees. Bearings remain should be in good lubrication and please pay attention to sound and vibration anomalies.
6. Regardless of the equipment in a shutdown or working state, as far as possible equipment placed in a cool place, such as temporary shade for equipment, sun nets, etc., to avoid long-term exposure in the sun and factors resulting in aging equipment, affecting the quality and efficiency of work.
7. The indoor environment is a better place for equipment when it is equipped at the place with better ventilation and at the same time people should pay attention to adjust the indoor temperature and surrounding environment ventilation and breathability. Generally, the temperature does not exceed 40 degrees to provide a good working environment for the stone crushers. The high temperature in the use of crushers makes more prone to failure, so more attention should be paid to the maintenance and repair of crushers. If we obey all rules above, we can eradicate large troubleshooting in the bud, keep the normal operation of production at the same time, ensure the safety of equipment operators.