The screening accuracy and output of the vibrating screen are low. What to do with distorted vibration
The main parts of the vibrating screen are frequently damaged, which directly affects the production efficiency of the vibrating screen. Do a good job in daily maintenance, and analyze the causes of common failures to improve the working efficiency of the vibrating screen and extend its service life. This paper shares the reasons and solutions for the problems of screen blocking and distorted vibration, as well as the failure of the screening accuracy and output of the vibrating screen to meet the requirements.
1. The screening accuracy cannot meet the requirements
This problem is often encountered by many users. Because the accuracy of materials affects the quality of products, it is the first common fault. The main reasons that affect the screening accuracy are insufficient mesh number, insufficient tension, damaged screen, insufficient excitation force, insufficient length, etc.
For the above problems, the following measures can be taken:
Replace the corresponding screen and use the regular screen to achieve the accuracy standard;
The tension of the screen is not enough, and the ideal tension can be achieved by using special screen loading tooling or professional screen loading machine;
In case of screen damage, stop the machine immediately for replacement;
Insufficient motor excitation force will also lead to insufficient screening accuracy. Reasonable adjustment of motor excitation force can effectively improve screening accuracy;
The length of the screen determines the screening progress, and reasonable increase of the length of the screen surface is also an effective way to improve the screening accuracy.
2. The output cannot meet the production requirements
The factors affecting the output include the wrong type of screen machine, insufficient motor power and unreasonable screen selection.
Measures that can be taken to solve these problems include:
The screening diameter determines the output and quality, so a reasonable increase in the screen surface diameter can effectively increase the output;
Different types of vibrating screens use different vibrating motors. If the motor equipped with the screen machine does not match, the output will be affected. If this problem is found, please replace the motor in time;
The higher the mesh number of the screen, the better the screening accuracy. The higher the screening accuracy will affect the output. Therefore, a reasonable increase in the opening rate can effectively improve the output.
3. Network blocking
No matter what kind of material is in the production process, there will be mesh blocking problem, so the mesh cleaning device is indispensable. Before solving the blocking problem, we should first find out the cause of material blocking. Common reasons include material characteristics and irregular material shape.
Measures that can be taken to solve these problems include:
For problems caused by the viscosity, adsorption, agglomeration, static and other characteristics of materials, the corresponding screen cleaning device, such as ultrasonic screen cleaning device, can be selected;
If the shape of the material is irregular and polygonal or strip, it is necessary to use a punching plate to clean the mesh.
4. Torsional vibration of vibrating screen
Failure of any link during the operation of the vibrating screen will affect the next production process. When the action direction of the excitation force generated by the vibrosieve source deviates or the spring damping parameter fails, the screen box will produce "distorted vibration", and the material will run away, resonance, stagnation and other phenomena.
After the equipment has "twisted vibration", it will not only affect the screening effect, but also cause damage to the equipment structure, resulting in uneven distribution of vibration force, cracking of the equipment screen box, and greatly shortening the service life of the vibrating screen. The causes and solutions are as follows:
(1) There are three main reasons for the poor flow of materials on the screen surface of the vibrating screen: first, the toughness of the screen box is not enough, and the connecting bolts are loose and should be tightened in time; The second is that the horizontal level of the screen box is not balanced. Find the fault from the support foot spring itself, immediately replace the spring or change the size of the support, or the screen screen may be damaged. Just replace the screen immediately; The third possibility is due to improper operation, that is, unbalanced feeding.
(2) If the vibrating screen cannot be started or the amplitude is small, check whether there is any obstacle, whether the motor is damaged, whether the components in the circuit are damaged or the voltage is insufficient. If these problems can be eliminated, check whether there is too much material on the vibrating screen surface, and then remove it. On the other hand, check whether the coupling bolts fall off, and adjust the position of eccentric shaft weighting block or auxiliary eccentric block as required.
(3) Working at the critical frequency for too long will cause cracks in the side plate of the vibrating screen, fracture of the beam and damage to the structural parts. It may be that the fastening bolts of the side plate are loose, the spring is deformed, or the error of the eccentric block is too large. At this time, replace the damaged parts and tighten the bolts.
(4) The vibration screen rotates too slowly and the bearing heats up, which means that the maintenance is not timely, the bearing grease is insufficient, or the quality of the newly added grease is poor, which causes the bearing to block the labyrinth seal and jam.
(5) The poor screening quality of the vibrating screen results in clogged mesh, increased particle size and humidity in the material, too thick feeding layer and uneven feeding. It is also possible that the two sides of the screen are not pulled tightly, resulting in the belt being too loose and weak in dragging. If there is a problem after treatment, it can be rotated reversely for a period of time to improve the screening quality.
(6) The bearing is damaged, the bolt is loose, the beam is broken and the spring is damaged, resulting in excessive noise of the vibrating screen. Except that the bolts can be tightened in time, all parts need to be replaced.
The vibrating screen often breaks down during operation, and the cause of the problem should be found out immediately after the fault occurs. At the same time, the daily maintenance and repair of the linear vibrating screen should be strengthened, and professional technical personnel should be equipped to operate it, so that special personnel should be assigned full-time. Only in this way can the equipment better serve the enterprise and create value.
Applicable industries
Chemical industry: resin powder, pigment, washing powder, micro powder, paint, soda ash, lemon powder, rubber, plastic, etc.
Abrasives, ceramic industry: alumina, quartz sand, mud, sprayed soil particles, etc.
Food industry: sugar, salt, alkali, monosodium glutamate, milk powder, soy milk, yeast, fruit juice, soy sauce, vinegar, etc.
Paper industry: coating paint, clay mud, black and white liquid, waste liquid, papermaking liquid, wastewater recycling, etc.
Metallurgical industry: titanium oxide, zinc oxide, electromagnetic materials, metal powder, electrode powder, etc.
Pharmaceutical industry: Chinese medicine powder, Chinese medicine liquid, Western medicine powder, Western medicine liquid, Chinese and Western medicine granules, etc.
Environmental protection: garbage, human and animal excrement, and urine, waste oil, food wastewater, wastewater processing, etc.
Processing process
Production workshop
This is our inner workhouse.
some small equipment or parts will be made from here.
There are cranes, laser cutting machines, electric welding machines, platen machines, angle grinders, polishing machines, forklifts, and other equipment.
Packaging & Shipping
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 visit
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 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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