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SZR series of hot ore vibrating screen for hot sinter grade completion of the sintering plant and cooling equipment in evenly feeding into operation, is one of the key products of our company.
According to the requirements of users, our company can take different forms, different specifications of the design and manufacture of a variety of hot mineral screen.
The working principle and structure characteristic
SZR series of hot ore vibrating screen to base type installation, using the double-shaft vibrator vibration.Double-shaft vibrator two shafts were driven by two electric motors is doing the reverse rotation self-synchronization, makes the screen box produce linear vibration.Fixed on the bracket of the motor is installed in the side of the screen, so the motor vibration.
Between the motor and the double-shaft vibrator Two dual-axis universal coupling between the vibrator is used to connect, The role of universal coupling with angle and length compensation, which can meet the screening machine work requirements of the relative displacement between the motor and the vibrator.
According to the different installation location of the motor and the vibrator, hot ore vibrating screen can be set into vibration or vibration.
SZR series of hot ore vibrating screen are equipped with two-stage vibration isolation system, on the basis of the dynamic load is small, the use to have the requirement for vibration isolation and damping, installation height to allow the occasion.
Thermal Mineral Vibrating screen box side plates and the beam is made of high quality heat-resistant stainless steel or high-quality steel) manufacture, The main force plate and the connection of side plate, the connection of the lateral plate and beams by riveting for swaged collar type, the connection should be fastened.
The work of hot ore vibrating screen, sieve in direct contact with high-temperature materials, requires good wear-resistant and heat-resistant properties, it is used in heat-resistant alloy cast steel.When the work will be affected by the thermal expansion of the sieve, Sieve plate fixation apparatus using inclined fastening, and thermal compensation mechanism can ensure the temperature condition, the sieve plate fixation, convenient disassembling sieve.
Conditions of use
1. In order to reduce the impact of the material on the screen, the screen box by the end of the feeding height is less than 500mm, the direction of its feeding should be consistent with the direction of movement on screen surface.
2. The heat-off device must be installed between the vibrator and the screen surface (insulated tank or insulation) in order to reduce the influence of heat radiation on the vibrator, the sinter To ensure that the temperature of the vibrator is allowed to work.
3. Material temperature is 500-1000 ? C, but the screen frame allowed temperature of 300-500 degrees Celsius.So when the screen surface, return the funnel and the inner wall of the bar must exhaust or ventilating and cooling.
4. Funnel hood and heat insulation device shall be fixed on the screen on the body, and the gap between the part of the vibration sieve shall not be less than 50mm.
Transportation and storage
Lifting should be at the level of sieve, after lifting to maintain the balance of the sieve.With a set of steel wire rope in lifting on the screen frame with hoist wells, are not allowed to other parts of the hanging screen.
Sieve into the screen (including vibrator), vibration isolation, and of three parts of motor and motor transport.Site haul transportation, the lower part of the screen should be a number of rollers, the ground flat, the lower part of the larger stiffness of wire rope should be back of screen frame.
After the arrival of equipment, should be based on the shipping list to check whether the device is complete, whether the damage caused in the course of shipment.Storage of ground smooth, sieve should have a tie on, no contact with the ground, but shall not be immersed in water.Open storage, the upper part should be covered.
Installation and commissioning
1. The installation of hot ore vibrating screen based on the embedded installation of the steel plate according to the size of the total as shown in the figure (30mm) the thickness of the steel plate.Steel plate under the beam, and the steel plate is fixed on the beam.The top-embedded steel bearings should be in the same horizontal plane, and the error is less than 3mm per cent.
2. The installed base of the motor frame shall have the supporting beams, the cement foundation to be after adjustment of the height of the motor, and carried out the secondary pouring.
3. The installed base plates and anchor bolts were used to install the units themselves ready, the factory is not attached to the above-mentioned equipment spare parts.
4. Loading the spring of bearings and the motor frame, adjust the relative position, and after, loading sequence on the damping spring.Spring loaded before, According to the actual value of stiffness matching end tag, each screen of every point in the spring stiffness should be the same, the spring after the installation of the centerline and spring supporting seat surface shall be vertical.
5. The installation of vibration isolation in the spring, and then installed on a vibration isolation spring on the plane of vibration isolation.
6. Lift the sieve, the inclination of sieve surface consistent with the general plan requirements, and then down slowly, is located in a vibration isolation spring.
7. After the installation of sieve, The screen should be maintained and the horizontal plane of vibration isolation, the available level in the measurement of the inlet and outlet ends of the screen box, if it is not level, the height of adjustable spring support.
8. When installing the motor frame Called the axis of the motor and the vibrator axis in the same vertical plane, Taking into account the screen supporting spring after the surface of material the compression deformation increases, the motor axis should not be less than the vibrator axis 3-5mm.
9. The installation of two when the coupling between vibrator The markers should be done in strict accordance with the manufacturer installation of flange connection, to ensure that the same relative position of the two eccentric block vibrator.
10. After the factory vibrator, such as more than 6 months, before the installation shall be vibrators of every component part can unpick and wash is clean, bearings and labyrinth groove of the top 2 industrial lithium grease.
11. After the completion of the installation of the vibrator, eccentric block with hand move, if the resistance is too big or sticking phenomenon, we must find out the cause to be adjusted.
12. Want a full check on the status of the fastening bolt is installed.
13. The no-load test run for 6-8 hours, observe the sieve in the process of commissioning run, the requirements of vibration, no horizontal swing and abnormal noise.
14. After the commissioning of hot screen in 6-8 hours, Should check the vibration of bearing temperature, the requirement of bearing the highest temperature is less than more than 75, you should also check the fastening of the sieve plate and a vibrator, it is found that the tightening loose a timely manner.
15. After the initial operation, the thermal state after 6-8 hours of work, should make the screen box cooled to room temperature, will screen and then tighten the fastening bolts of the vibrator once.
Use and maintenance
1. The operator should be familiar with the equipment before operation, the overall view of the equipment, check the various parts of the bolts is loose, if the screen surface damage and so on.
2. A sieve to start should follow the sequence of the process system, try to avoid starting with the material, and the smooth operation of sieve can feed.
3. Hot mineral screen in the course of their work should always observe the sieve operation whether is stable, If it is found that when the movement is not normal or abnormal noise, the importance of timely checked and find out the reasons, troubleshooting.
4. A sieve, parking should be in accordance with the sequence of the process system, with the exception of special accidents, the Prohibition of parking or parking strip continue after the ribbon material.After parking the sieve, should check whether the bolts is loose, if it is found loose should be tightened.
5. In case of a sudden shutdown in the process of operation, must continue to be on the screen surface ventilation and cooling to prevent screen makes the screen box from overheating and deformation of the hot material.
6. The environment around the screen and the screen should be cleaned after parking.
7. Attention should be paid to the vibrator and the screen box, sieve tray with the fastening bolts of the screen box, if it is found loose should be tightened.
8. Screen frame lateral plate and beams are made of high quality of heat-resistant stainless steel manufacturing, are not allowed in the screen frame is welded on the other non-west, so as not to affect the properties of materials.
9. The butterfly spring in the fastening of the sieve tray is used for the compensation of thermal expansion for fasteners, the failure of butterfly open spring should be replaced immediately.
10. The lamina cribrosa by direct contact with the hot material and wear, so it should always check the status of their work, if the screen is cracked, should be timely repair welding to avoid the damage caused by the expansion of a rift.
11. The state of vibrating screen in the heat, don't use cold water over the screen box and plate, to prevent caused by the rapid cooling of the screen box and plate deformation and crack.
12. The accumulation of helical spring mineral powder, it will affect the normal work of the spring, should always be clean with compressed air blowing.
13. The vibrator the use of 2 industrial lithium-based grease lubrication bearings, lubricated once per week under normal conditions, the amount of oil is unfavorable and overmuch, lest cause overheating of bearings.
14. After the use of a vibrator 6, we should check the oil means the case, for example, become dry, or have a hard time, it should be time to clean the change of lipid.Requirements for bearing cleaning 1-2 times per year.