Rotary screener is an indispensable equipment in the mine and coal processing system, which is mainly used for material separation. The quality of the separation effect directly affects the working efficiency of subsequent crushing and sand washing equipment. However, in the daily production, various problems will inevitably occur in the rotary drum screener, such as: blockage of the screen drum, fracture of the coupling shaft, deformation of the screen ring, etc., which seriously affects the stable operation of the system. 1. Blockage of the rotary screen When the humidity of the material is high, it is easy to stick to the sieve drum and sinter, which will cause the screen bar to be blocked. At this time, the combing plate cannot meet the work of cleaning the sieve barrel and normal screening, which causes coal powder to enter the crusher, which in turn causes subsequent equipment to be blocked and reduces the work efficiency. Especially when the rainy season comes, the sieve drum of the sieve is seriously blocked, and even if it is manually cleaned, the screening efficiency cannot be guaranteed. 2. Screen shaft coupling shaft broken The whole screen cylinder relies on multiple coupling shafts and connecting rods to…
read more >>
The rock sand washing machine is a kind of sand processing equipment to complete the cleaning of sand gravel and filtering impurities, and also has a certain function of screening, which sets a reliable hardware foundation for improving the purity of sand and gravel. It has the advantages of high cleanliness, reasonable structure, large output and less sand loss in the process of sand washing. In the process of stone processing, due to the fierce collision and the soil content of stone itself, there will be a certain amount of stone powder and mud powder in the manufactured sand, which will seriously affect the grading of sand. Therefore, the sand washing machine should be used for further auxiliary processing. The sand washing machine can effectively clean the dust, stone powder and mud powder in the sand. Make the sand up to the standard we need for the construction industry. The sand washing machine can not only be used in the sand making machine, but also be widely used in the cleaning of the soil contained in river sand, ground sand, weathered sand, etc. In the design of sand washing machine, the transmission part is isolated from water and materials, which…
read more >>
Sand rotary screening plant is often used for the classification and screening of medium and finely divided materials. In the quarry, it can be used for the classification of large and small stones, and the soil and stone powder outside the stone can be separated. In the chemical industry and coal industry, it can also be used for screening of bulk materials and powder materials. The GTS sand rotary screening plant produced by our company is composed of drum, frame, funnel, reducer, motor and other parts. After the broken stone enters the drum, the material is sieved by the centrifugal force and jigging of the drum. Sieve out one by one through different screens. After the stones of different specifications are screened out, they are dropped into the belt conveyor through the funnel and sent to the finished product yard. On the one hand, the stone with large particle size flows forward along the slope of the drum, and is gradually screened out through the screens of different meshes. The small stones are sieved out and fall into their respective hoppers, and then they are transported by hand or by gravity to the finished product pile. Wide application, can be customized Widely…
read more >>
Increasingly depleted natural sand and gravel resources are difficult to meet the increasing demand of various industries for sand and gravel, making the mechanical sand emerge as the times require. High-quality machine-made sand can meet the different needs of different construction projects. So how to produce high-quality machine-made sand? 1. Selecting good raw materials The raw material used for processing machine sand should be clean, hard texture, no weak particles and no weathered fossils. Generally there are different rocks such as granite, basalt, river pebble, cobblestone, limestone, sandstone, tailings, slag, quartzite and so on. The artificial sands made from these parent rocks are different in strength and particle size, and they are also different in terms of use. 2. Mechanism sand production process The basic production process can generally be divided into: mine rock--coarse crushing --medium crushing (partially set screening) -- fine crushing -- screening -- dust removal -- sand washing--machined sand. At present, there are mainly three methods of stone powder separation: dry method, wet method and semi-dry method. Dry production adopts air-selected stone powder. Through wind separation technology, particle size adjustment and stone powder screening are realized. Sand washing machine is used to wash stone powder in wet production. The equipment mainly includes wheel…
read more >>
Limestone is a commonly used raw material for crushing sand. It is widely distributed and its production lines are more common. The hourly output ranges from 100t to thousands of tons. It is understood that there are many limestone production lines with an hourly output of 100-200t, 200-400t, and 200-500t. Therefore, this paper gives the configuration schemes of these types of capacity. However, with the increase in production, sand production lines of 800t / h, 1000t / h or even higher capacity will become a trend, so the corresponding equipment configuration is also listed for your reference. 1. 200t/h limestone crushing production plant Production specifications: 0-5-16-31.5mm Equipment configuration: PE750X1060 jaw crusher, PFW1315III impact crusher, 3YA vibrating screen 2. 400t/h limestone crushing production plant Production specifications: 0-5mm Equipment configuration:PE1000X1200 jaw crusher, PFW1315III impact crusherx2, 3YA vibrating screen 3. 500t/h limestone crushing plant Production specifications: 0-5mm good quality crushed sand Equipment configuration:PE jaw crusher, cone crusher, sand making machine The production line configuration of the above capacity is for your reference only. Because the names of different manufacturers' equipment are different, and the parameters of the same model products may also differ, the equipment information of the specific manufacturer shall prevail in…
read more >>
Throughout the sand and gravel production line, the trommel screen is a widely used machine in the sorting technology. The main function of the trommel screen is to screen different types of sand and gravel aggregates with high accuracy. Therefore, it plays an irreplaceable main role in the production of the entire sand and gravel production line. The barrel of the trommel drum screen is generally divided into several sections, depending on the specific situation, the sieve holes are arranged from small to large, and the sieve hole diameter on each section is the same. Users can customize the screen size according to their actual needs. If users have high requirements on the particle size uniformity of the finished sandstone products, then they should use a suitable mesh size for the use, and vice versa. The mesh size of the trommel screen has a great influence on the particle size of the product, so we must be careful when selecting it, and we must first understand the process requirements and the particle size of the product. This can not only ensure the safe operation of the sand and gravel production line, but also meet the particle size requirements of the sand and gravel products. In order…
read more >>
The belt conveyor is a material transportation system that widely used at present, and it plays an important role as a carrying and conveying device. This article analyzes the causes of damage during the use of the conveyor belt. 1. Conveyor quality A. Conveyor belts must withstand large material impact forces and should have good abrasion resistance. The rubber cover must have a certain strength. Once the rubber cover is worn or severely aged, it will easily damage the cushion layer inside the conveyor belt. This leads to a reduction in strength and affects its service life. B. The number of backing layers and the diameter of the drum affect the bending stress of the belt. When the number of cushion layers is larger and the diameter of the roller is smaller, the bending stress is larger, and the reverse bending of the conveyor belt is more likely to occur. C. The connection and safety factor of the conveyor belt also affects its service life. The specific performance is that when the pad or the steel rope is broken, the strength of the belt connector will decrease. When the safety factor is too large, the number of pads will increase,…
read more >>
In the entire sand production line, equipped with sand washing machine is a popular trend. The sand washed by the sand washer is clean and has good quality. However, during the sand washing process, fine sand will be lost with the flow of water. According to statistics, a production line generally loses 5% -25% content, which seriously affects the production of sand production. So how to reduce the amount of sand lost? 1. Adopting sand recycling machine The wastewater from sand washing is discharged to the lower water tank of the fine sand recycling machine, and the mixed mud sand water is driven to the cyclone by the slurry pump, and then discharged to the screen surface. The fine sand is discharged with the screen surface, and the mud and water are returned to the lower water tank To form a cycle to extract sand from wastewater. Two points should pay attention in fine sand recycling machine process A. After turning on the machine for a few laps, put in materials again, which can reduce the burden on the equipment. B. When configuring the transformer, the total power must be considered to avoid low-voltage operation of the equipment and ensure…
read more >>
The circular vibrating screen is mainly composed of a screen box, a screen, a vibrator, a damping spring device and a bottom frame. A cylindrical eccentric shaft exciter and a biasing block are used to adjust the amplitude. The vibrator is installed on the side of the screen box, and is driven by a motor through a coupling to generate a centrifugal inertial force, which forces the screen to vibrate. 1. Exciting force is too strong Vibration motor is the part that provides the excitation force for the equipment. If the motor power does not match or is too large, the phenomenon of large jump and displacement will occur during use. If the excitation force of the motor is adjusted to increase the output or the screening accuracy, if the excitation force exceeds the rated range, it will cause the problem of intense vibration. If adjustment is needed, consult the manufacturer and adjust within the range that the motor can bear. Users should provide detailed material characteristics, screening requirements, output requirements, etc. when purchasing, so that technical personnel can recommend reasonable models. 2. Damping spring with high hardness The damping spring is a component that connects the base of the…
read more >>
The circular vibrating screen is a high-efficiency new type vibrating screen whose motion trajectory is circular motion vibration. The screening equipment has high efficiency and is suitable for screening in the mining and sand and stone industries. However, after a long time use of the vibrating screen, there may be problems such as failure to start, large or uneven jitter during startup. Now this article focus on why the vibrating screen cannot start? 1. Power supply If it is a motor failure, replace it with a new motor part. The working assembly line of the vibrating screen is a combination of centralized control circuits. When some components are damaged, new components must be replaced in time; sometimes the voltage is unstable and the voltage is lower than the rated voltage value at startup. This is prone to failure and vibration must be guaranteed The voltage during the sieve operation is stable. 2. Vibration exciter The circular vibrating screen uses the vibration principle of the shaker to achieve material screening. When the shaker fails and cannot be powered on normally, the device will fail to start. And the exciter parts must ensure good lubrication when working. If the lubricating grease becomes…
read more >>
The screw sand washer is an indispensable and important equipment in the production of sand and gravel, which can remove the dust on the surface of the sand and gravel, make the sand cleaner and have better quality. But how to set a screw sand washer at working site? This article has compiled related content for your reference. Installation Precautions 1. Shall be installed on a horizontal concrete foundation and fixed with anchor bolts. 2. When installing, pay attention to the main body and vertical. 3. After installation, check whether the bolts in all parts are loose, and tighten them if necessary. 4. Configure the power cord and control switch according to the power of the device. 5. After the inspection is completed, a no-load test run is performed, and the test run can be carried out normally. Items to check before starting 1. Whether the transmission system is operating normally and the speed is complete. 2. Whether the operation of the sand washer is sensitive and reliable. 3. Whether the lubrication system is complete, the pipeline is complete, and the oil circuit is smooth. 4. Whether the electrical system of the sand washer is reliable and sensitive. 5.…
read more >>
Appropriate equipment and process optimization in the production of sand processing is an effective measure for improving the sand quality. For example, strengthening the control of soil removal treatment; adding dust collection and humidification equipment, effectively controlling the content of sand powder. 1. Screening A simple screening device is set up in the site to screen out large particles and continue the crushing process. The disadvantage of this method is that it requires an independent site, and the screening effect is relatively poor. With the site and funds available, a longer vibrating screen can be considered to screen the parent rock to achieve the desired effect. 2. Configure sand washing machine The sand washers can wash away small particles in some machine sand and also wash away some impurities. The key is to control the stone powder content in the machine sand. Some sand and stone factories use the vibrating screen as a sand washer to control the stone powder content; some use a separate wheel sand washer for stone powder control; some use a wheel and spiral sand washer to wash the sand. The stone powder content is controlled by the sand washing machine, the cost is small, the…
read more >>
Copyright © 2015 - 2026 Luoyang Longzhong Heavy Machinery Co., Ltd. Website Map | Privacy policy | Contact Us
Inquiry