Vibrating screen using how environmentally friendly operation, vibrating screen cleaning and mainten

1. When the screen machine leaves the factory, the exciter is filled with lubricating oil, which has anti-corrosion performance and is valid for three months. After the storage period is more than three months, it can be operated for 20min, and it can continue to be anti-corrosion for three months, and it must be replaced with clean lubricating oil when working.

2. Always keep the vent of the exciter unblocked (oil leakage is easy to cause due to blockage). If the oil is still leaking after it is unblocked, the oil seal should be replaced.

Third, the normal operation of the bearing should not exceed 75, the new exciter because there is a running process, so the temperature may be slightly higher, but after 8 hours of operation, the temperature should be stabilized, if the temperature continues to be too high, the oil level, oil level and oil cleanliness should be checked.

Fourth, ensure that the labyrinth tank is full of grease, and work in the case of a large amount of dust, and should be filled with grease more frequently.

5. When replacing the V-belt, the motor anchor bolts should be completely loosened, and the V-belt should be conveniently put into the pulley groove, and it is not allowed to pry the V-belt with sticks or other objects, the tension of the V-belt must be suitable, and the pulley must be aligned, after adjusting the tension for the first time, work for 48h and re-adjust it again.

6. The bolts connected between the exciter and the screen box are high-strength bolts, which are not allowed to be replaced by ordinary bolts, and the fastening must be checked regularly, at least once a month. If any one of the bolts is loose, it will also cause the other bolts to shear, causing damage to the screen.

7. Where the ring groove rivet connection is used, it is allowed to replace it with high-strength bolts, and all contact surfaces or holes should be free of iron filings, ash, oil, rust and burrs.

8. The high-strength bolts, nuts and washers used must meet the requirements of the "Technical Conditions for High-strength Large Hexagon Bolts, Large Hexagon Nuts and Washers for Steel Structures".

9. In order to prevent the internal stress caused by welding, it is generally not allowed to weld the screen box and any auxiliary parts on site, and when welding is necessary, it should be carried out by skilled operators.

The environmental protection vibrating screen is generally composed of a vibrator, a screen box, a support or suspension device, a transmission device and other parts.

Vibrator. There are generally two types of vibrators for single-shaft environmental protection vibrating screen and double-shaft environmental protection vibrating screen according to the eccentric reconfiguration mode. The configuration of eccentric heavy is better in the block eccentric type.

Screen box. The screen box is composed of a screen frame, a screen surface and a pressing device. The screen frame is made up of side panels and beams. The screen frame must be sufficiently rigid.

Supporting devices. There are two kinds of supporting devices for environmental protection vibrating screens: hanging type and seat type. The pedestal installation is relatively simple, and the installation height is low, so it should generally be preferred. The supporting device of the environmental protection vibrating screen is mainly composed of elastic elements, and the commonly used ones are coil springs, leaf springs and rubber springs.

Transmission device The environmental vibrating screen usually adopts a V-belt transmission device, the structure of the environmental vibrating screen is simple, and the number of revolutions of the vibrator can be selected arbitrarily, but the belt is easy to slip during operation, which may lead to the blockage of the sieve hole. The environmental vibrating screen is also directly driven by a coupling. The coupling can maintain the stable number of revolutions of the vibrator and has a long service life, but it is difficult to adjust the number of revolutions of the vibrator.

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How to avoid dust in ultrasonic vibrating screens**:

1) Keep the production environment ventilated. One of the reasons for dust** is that the production environment is closed, so the dust cannot be discharged through the air circulation and accumulate in the production environment. Occurs if an open flame or high temperature is encountered**;

2) Carry out the dust-proof work of the ultrasonic vibrating screen. Clean the dust after each use of the device, especially near seals and vibrating motors.

3) Use explosion-proof motors. The vibrating motor used in ordinary vibrating screens does not have explosion-proof functions. However, when selecting flammable and explosive powder materials, in order to avoid **, it is necessary to ensure that no heat and open flames are generated during normal operation, so explosion-proof vibrating motors must be used.

Ultrasonic vibrating screens and tripping cleaning and maintenance reasons.

Clean and maintain the ultrasonic oscillator regularly to keep the surface clean and extend its lifespan.

Ultrasonic vibrating screens have three main aspects that can be cleaned and maintained regularly:

1.When cleaning stainless steel surfaces, be careful not to scratch the surface, avoid using bleach and cleaning fluids containing abrasives, steel balls, abrasive tools, etc.

2.To remove the cleaning solution, rinse the surface with clean water at the end of cleaning.

3.Contaminate stainless steel surface grease, engine oil and lubricating oil, wipe with a soft cloth, then clean with a mild detergent or ammonia or a special detergent.

When the ultrasonic vibrating screen works, there are several reasons for tripping.

One is the short-circuit aging of the power supply of the vibrating motor of the ultrasonic vibrating screen;

Secondly, the vibrating motor line is damaged and leaking;

Third, the bearing is damaged or lacks oil, resulting in the load tripping;

Fourth, the magnetic circuit performance of the vibrating motor is reduced, resulting in excessive current.

Fifth, the capacity of the air switch of the vibrating motor does not match or deteriorates with the current protector.

In the process of vibrating screen, it is often affected by the bearing to make the screen machine vibrate strongly, which is mainly affected by the following five factors: if the eccentric vibration of the exciter is the cause of the exciter, then increase the weight of the eccentric block and adjust the amplitude; If it is a vibrating motor, the amplitude adjustment depends on the angle of the eccentric blocks at both ends of the shaft to change the magnitude of the excitation force, the angle is small, the excitation force becomes larger, and the amplitude becomes larger; On the contrary, the angle becomes larger, the excitation force becomes smaller, and the amplitude becomes smaller; The radial clearance of the bearing, through the bearing test results of the environmental protection cleaning screen, shows that the radial clearance is too small or too large, which will cause the bearing system to produce large vibration. When the radial clearance is too small, it will cause high-frequency vibration; When the radial clearance is too large, it can cause low-frequency vibrations.

The geometric accuracy of the bearing vibrating screen excitation force is too large, which will cause the bearing to be subjected to a very large radial force, so it will produce strong vibration. The higher the bearing accuracy, the lower the vibration. Therefore, to reduce bearing vibration, the surface machining accuracy of the rolling element should be improved first.

Bearing friction and lubrication bearing is the main source of vibration that is difficult to control the vibrating screen, because the vibrating screen is maintained by a large excitation force, so the bearing will be subjected to a large radial force, the vibrating screen in the working process, the huge excitation force will cause the elastic vibration of the bearing system. The fit between the outer ring and the bearing holeThe fit between the outer ring and the support hole will affect the transmission of vibration, and if the fit is tighter, it will force the raceway to deform, increase the shape error, and lead to an increase in vibration. Usually, the material is inside the vibrating screen.

The speed at which it runs and spreads. After the material enters the material inlet from the vibrating screen, it will fall onto the screen and then spread to the surrounding area. The diffusion will gradually complete the screening process, and the smaller the angle of the vibration motor, the faster the material will diffuse into the surrounding area.

The vibrating motor provides excitation force to the equipment during operation, and if the motor power and model do not match, it may lead to large runout or displacement during use. In order to increase the screening output or accuracy, some customers may adjust the motor excitation force to exceed the rated range, which may also cause the vibrating screen to vibrate violently.

Therefore, if the user wants to adjust the excitation force, he needs to adjust it within the range that the motor can bear, and he can consult the manufacturer, or let the technician recommend a reasonable model according to the nature of the material provided, screening requirements, output requirements and other factors.

The damping spring is used to connect the base of the screen machine and the screen frame, and can also play the role of buffering, if the spring hardness is too large, it may not achieve the effect of buffering, so that the equipment runs when the problem of runout. Therefore, users can solve the problem caused by excessive spring hardness by choosing a better quality spring.

When installing the vibrating screen, if the ground is uneven or improperly installed, it may cause excessive vibration, which will cause the vibrating screen to beat out large, so pay attention when installing the vibrating screen.

If the vibration is abnormal due to uneven ground, it is necessary to check whether the anchor bolts are loose. Under the action of vibration, the anchor bolts of the fixed base will be loosened by working for a long time, which will cause the vibrating screen to vibrate too much when working. In this case, tighten the anchor bolts.

The vibrating screen with double vibration motor will adjust the steering of the motor when leaving the factory, but when the motor is worn or destroyed, if the motor steering or power is inconsistent when the user replaces the motor, it may cause the vibrating screen to beat violently. In this case, it is necessary to consult a technician to readjust the installation of the vibration motor steering or eccentric block, etc.

The above introduces to you the common causes and solutions of vibration of environmental vibrating screen equipment, if the above is useful to you, please encourage me to like me, so that I can help more people, thank you!

The ultrasonic vibrating screen is based on the original rotary vibrating screen, and the ultrasonic vibrator is attached to the screen, and the mechanical wave generated by the instrument makes the ultra-fine powder accept a huge ultrasonic acceleration, so as to inhibit the network blocking factors such as adhesion, friction, flat dropping, and wedge, and improve the screening efficiency and net cleaning efficiency. Ultrasonic vibrating sieve featuresThe characteristics of this equipment are that it can effectively improve the flattening (light contact between powder and the mesh port) and slip effect of low-density powder in gravity sedimentation, improve the retention or wedge of high-density metal in the mesh port, and improve the adhesion effect of electrostatic powder, so as to improve the screening efficiency and screening quality. Expressed by the screening pass rate, in general, the pass rate is increased by 50%-100% compared with the non-ultrasonic vibrating screen, and the pass rate is increased by 400% in some cases.

1) Reduce or eliminate the need for network clearance; (2) It does not produce pollution of powder by bouncing balls and other auxiliary substances; (3) Maintain the mesh size and stabilize the screening accuracy; (4) Decompose adherent substances and reduce the material on the sieve; (5) High screening efficiency.

Xinxiang Zhengfang Machinery and Equipment****.

Tianhe vibrating screen has the characteristics of high screening accuracy, large processing capacity, simple structure, low energy consumption, low cost, low noise, long service life of the screen, good sealing, very little dust overflow, and convenient maintenance. The product is widely used in the classification or screening of dry powder or granular materials in chemical, food, plastic, pharmaceutical, metallurgy, glass, refractory, grain, fertilizer, abrasives, ceramics and other industries. It can be used in pipeline operations to achieve automation.

1.Powder or unqualified material (too large or too small) in the filter material

2.Screening of qualified, standard materials.

Mainly used for: impurity removal, filtration, grading, etc.

1. Impurity removal: deal with the impurities in the material, which refer to large particles or small particles that do not meet the requirements.

2. Filtration: filter out the impurities in the liquid.

3. Classification: classify a bunch of materials, divide the materials into n specifications according to the particle size segment, and implement classification and utilization.

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The vibrating screen has some precautions before starting, and it is indispensable for maintenance work

1. Check the connection between the rubber pad and the sieve body and the rack.

2. Check whether all the locking parts are firm.

3. Check the vibrating motor:

4. Check the power supply voltage of the vibrating screen.

5. Check whether the screen surface on the screen grid is compressed.

6. Check the connection between the vibrating motor and the sieve body.

7. Check the interlocking control device of the vibrating motor.

8. Remove the end cover of the motor, check whether the relative phase angle of the sector block is consistent, and tighten the fastening screws of the sector block.

9. The installation angle of the two motors should be consistent, and the feeding device should tighten the ram.

10. Check whether the hose connection of the inlet and outlet is sealed, and do not be too tight, otherwise it will be torsioned when the sieve body moves, and the no-load test will be carried out.

11. During the commissioning, there shall be no collision or abnormal sound between the vibrating screen body and the frame.

12. Check the amplitude, and there shall be no abnormal phenomena such as distortion when the sieve body moves in a reciprocating linear motion.

13. After 10-15 minutes of operation, use the wrench to tighten the bolts used in the driving mechanism.

Operators must develop good operating habits in order to better reduce production costs and improve efficiency.

Inspection before running the environmental protection vibrating screen: including equipment hygiene, the connecting bolts of each part are complete, fastened and intact, check whether the exciter is in good condition, check whether the springs are damaged, missing, broken and other phenomena, check whether the triangle belt is tensioned and whether there is any breakage of the screen box, whether the sieve plate is damaged, check whether the sieve plate is blocked by debris, the screen surface should be smooth and free of damage and loosening, check whether the inlet and outlet chute is unblocked, check whether the beam is open and welded, check whether the protective device is reliable, check whether the control box, communication and lighting are in good condition, Whether the grounding protection is reliable, and whether the control button is flexible and reliable.

When starting: After turning on the environmental protection vibrating screen, stand next to the control box to monitor the start of the equipment and stop the machine immediately if it is found to be abnormal. After starting normally, inspect the nozzle of each environmental protection vibrating screen again to see if it is blocked or falling off, often observe the temperature and sound of the motor, often observe the sound of the exciter, observe the vibration of the sieve, whether the amplitude of the four corners is consistent, whether there is coal leakage, whether the triangle belt is loose or fall off, and often observe the dehydration and demediation effect.

Check whether the inlet and discharge of the sieve are normal and whether there is any blockage.

Once the material has been screened on the sieve, the work can be stopped. It is necessary to remind everyone that when parking, remember to observe whether the sieve collides with other devices when passing through the resonance point.