Top Vibrating screen screening accuracy
The main parts of the vibrating screen are frequently damaged, which directly affects the production efficiency of the vibrating screen. Do a good job of daily maintenance work, analysis of common fault causes, in order to improve the efficiency of the vibrating screen, extend its service life. This article shares the reasons and solutions for unmet screening accuracy and yield of vibrating screens, as well as the problems of blocked mesh and twisted vibration.
1. Screening accuracy can not meet the requirements
This problem is often encountered by many users, because the accuracy of the material affects the quality of the product, so it is the first common fault. The main reasons that affect the accuracy of screening are insufficient mesh number, mesh tension is not enough, screen damage, vibration force is not enough, length is not enough.
To solve the above problems, measures can be taken:
(1) Replace the corresponding screen, use regular screen to achieve accuracy standards;
(2) The mesh tensioning degree is not enough, you can use special mesh loading tool or professional mesh loading machine to achieve ideal tensioning;
(3) Once the screen is damaged, it should be stopped immediately for replacement;
(4) Insufficient motor vibration force will also cause insufficient screening accuracy, reasonable adjustment of motor vibration force can effectively improve the screening accuracy;
the length of the screen determines the screening progress, and a reasonable increase in the length of the screen surface is also an effective method to improve the screening accuracy.
2. The output cannot meet the production requirements
The factors that affect the output are the screen model number is wrong, the motor power is insufficient, the screen mesh selection is unreasonable.
Measures that can be taken to deal with these problems are:
(1) Screening diameter determines the yield and quality, so a reasonable increase in screen surface diameter can effectively increase the yield;
(2) Different types of vibrating screen using vibration motor is different, such as the screen machine equipped with motor does not match will affect the output, if found this problem, please replace the motor in time;
(3) The higher the mesh number, the better the screening accuracy, high screening accuracy will affect the output, so a reasonable increase in opening rate, can effectively improve the output.
3. Network blocking occurs
No matter what kind of material in the production process will appear network blocking problem, so the cleaning device is indispensable. Before solving the network blockage problem, find out the cause of the material network blockage. The common reasons are the characteristics of the material itself and the irregular shape of the material.
Measures that can be taken to deal with these problems are:
(1) Problems caused by the viscosity, adsorption, agglomeration, static electricity and other characteristics of the material can be selected the corresponding cleaning device, such as ultrasonic cleaning device and other equipment;
If the shape of the material is irregular, polygon or strip shape, you need to use punching plate to clean the net.
4. Torsional vibration phenomenon of vibrating screen
The failure of any link in the process of vibrating screen operation will affect the next production procedure. When the vibration screen source generated by the direction of excitation force deviation or spring damping parameters fault, it will lead to the screen box produced "twisted vibration phenomenon", the occurrence of material deviation, resonance, stagnation and other phenomena.
Equipment "twisted vibration phenomenon", will not only affect the screening effect, but also damage to the structure of the equipment, and then lead to uneven distribution of vibration power, equipment sieve box cracking, greatly shorten the service life of the vibrating screen. The reasons and solutions are as follows:
(1) There are three main reasons why the material flow on the vibrating screen surface is not smooth: first, the sieve box is not tough enough, the connecting bolt vibration loose, should be fastened in time; Second, the horizontal level of the screen box is not balanced, to find fault from the supporting foot spring itself, immediately change the spring or change the size of the support, it is possible to screen mesh damage, immediately replace the screen mesh; The third may be improper operation, that is, caused by unbalanced feeding.
(2) vibrating screen can not start or small amplitude, should check there is no barrier, the motor is damaged, line components are damaged or insufficient voltage, if you can exclude these aspects of the problem, you can check whether the vibrating screen surface of the material accumulation too much, and then remove. On the other hand, check whether the coupling bolt falls off. Adjust the eccentric shaft weighting block or the position of the auxiliary eccentric block as required.
(3) Working time is too long at the critical frequency, it will crack the vibrating screen side plate, fracture the beam and damage the structural parts. May be the side plate fastening bolt slack, spring deformation or eccentric block error is too large. Replace the damaged parts and tighten the bolts.
(4) The vibrating screen rotates too slowly and the bearing heats up, which shows that the usual maintenance is not timely, the lack of bearing grease, or the quality problem of the new grease, resulting in the blockage of the bearing labyrinth seal plug.
(5) vibrating screen screening quality is not good, resulting in mesh blockage, particle size and humidity increase in the material, the feeding layer is too thick, unequal feeding. There may be screen on both sides of the pull is not tight, resulting in the belt too loose, drag weak. After processing problems, you can reverse rotation for a period of time to improve the quality of screening.
(6) Bearing damage, bolt loosening, beam fracture and spring damage, resulting in excessive noise of the vibrating screen. In addition to timely tightening of bolts, all parts need to be replaced.
The vibrating screen often fails during operation, and the cause of the problem should be found immediately after the failure occurs. At the same time, should strengthen the daily maintenance and maintenance of the linear vibrating screen, equipped with professional and technical personnel to operate, do full-time. Only in this way, the equipment can better serve the enterprise and create value.
Applicable industries
It is divided into dry powder granular type and liquid type.
Chemical sieve: special sieve for resin, pigment, medicine, medicine, cosmetics, fire suppressant, plastic, rubber and other ceramics and refractory materials.
Special screens for ceramic refractory materials: abrasives, abrasives, glass, alumina, ceramic slurry, clay slurry, refractories, quartz sand, titanium powder, powder, etc.
Food specific screen: sugar, monosodium glutamate, salt, fruit juice, starch, milk powder, grain, soybean milk, egg powder, various protein powder, etc.
Metallurgical special screen: ore, titanium oxide, zinc oxide, casting sand, metallurgical powder superhard alloy, electromagnetic materials, aluminum powder, various metal particles, etc.
Others: carbon black, carbon, cosolvent, activated carbon, wood powder pearl, etc.
Liquid special screen: paint, paint, and viscous liquid.
Technical parameters of linear vibrating screen
Guidance on use and maintenance of linear vibrating screen
1. The machine shall be equipped with electrical protection device.
2. At the initial operation stage of the machine, the anchor bolts shall be checked at least once a day to prevent looseness.
3. When the motor rotation direction does not meet the requirements, adjust the power supply phase sequence.
4. The motor shall be well lubricated, and lithium base grease (ZL-3) shall be added once every two weeks of operation. When refueling, an appropriate amount of lithium base grease shall be added through the oil cup. When sealed bearings are used, the motor is not equipped with oil cups.
5. After the machine has been running for 1500 hours, check the bearing and replace it immediately in case of serious damage.
6. When the machine is used again after being stopped for a long time, the insulation resistance should be measured, which should be greater than 0.5 megohm for 500 volt megger measurement.
Daily maintenance of linear vibrating screen
1. Before starting:
(1) Check whether the coarse mesh and fine mesh are damaged;
(2) Check whether the transportation support is removed.
2. At startup:
(1) Pay attention to whether there is abnormal noise;
(2) Whether the current is stable;
(3) Whether the vibration is abnormal.
3. After use: clean up after each use.
Regular maintenance of linear vibrating screen
Regularly check the coarse screen, fine screen and spring for fatigue and damage, and check whether all parts of the machine body are damaged due to vibration. The parts that need to be lubricated must be lubricated.
About Transportation
After you place the order and pay the deposit, we will start to arrange the production and contact the ocean freight transportation agency to reserve the position. Two days before the end of production, you need to complete the final payment. Then, we inform the ocean cargo transportation agent company that it is ready to come to the factory to pull the goods to the port. On the day of delivery, we will send the customer the factory video and pictures, and mark the corresponding English name of each product and product parts with a marker to prevent the customer from not knowing what each part is after receiving the goods. At the same time, we will put the English version of the product instructions in the cargo box. We generally select freight forwarders with preferential prices for customers to deliver goods for you. The shipping method can be FOB or CIF. You can also choose EXW, and then contact the goods agent company yourself.
Customer visits
FAQ
1. Who are we?
Our headquarters is located in Henan, China, and our factory was established in 2002. At present, there are more than 100 workers, technical engineers, foreign trade sales personnel, and administrative personnel. The factory covers an area of more than 2000 square kilometers and is mainly engaged in vibrating screening and conveying and feeding equipment.
2. How do we guarantee the quality?
Always provide pre-production samples before mass production; Always carry out a final inspection before shipment.
3. What can you buy from us?
You can purchase a vibrating screen, roller screens, rotary screens, vacuum conveyors, mixer, and customized vibrating machinery and conveying equipment in our factory.
4. What are our strengths?
As one of the old enterprises in the screening industry, Tianfeng has provided a large number of screening equipment and systems at home and abroad. Mass production, rapid delivery, stable quality, affordable price, and excellent after-sales service have become the symbols of Tianfeng.
5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW, CIP, FCA, CPT, DDP, express;
Accepted payment currency: USD, EUR, RMB;
Type of payment accepted: telegraphic transfer, letter of credit, express remittance, credit card, PayPal, Western Union remittance, cash, custody;
Oral: English, Chinese, French.
6. What information do we need to help you choose a perfect machine?
-Name and characteristics of raw materials.
-Purpose of use: remove impurities, filter, and grade.
-Processing capacity: kg/h, L/h.
-Raw material size: (mesh or mm).
-How many floors do you need?
-Voltage, frequency, phase (single-phase or three-phase) Note: You'd better send us the relevant pictures or materials you want to filter, which can ensure that we recommend the appropriate machine for you.
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