SZR series hot mining vibrating screen for sintering plant for hot sinter grade and cooling equipment uniform feeding operation, is one of the key products of my company.According to the user's requirements, our company can take different forms, different specifications of the design and manufacture of various kinds of hot griddle.
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Working principles and features
SZR series hot mining vibrating screen is a type of installation, the biaxial vibrator vibration.Biaxial vibrator two axis respectively by two electric motors to drive do reverse self synchronous rotation, makes the screen box produce do linear vibration.Motor installed in the fixed bracket on the side of the screen box, so the motor is not concluded.Between the motor and biaxial vibrator, between two biaxial vibrator adopt universal shaft coupling, universal coupling with Angle and length of the compensation function at the same time, can meet the sieve machine work and the relative displacement between the vibrator motor.
Depending on the position of the motor and the vibrator is installed, heat ore vibrating screen can be set into vibration type or under vibration pattern.SZR series hot mining vibrating screen are equipped with the secondary vibration isolation system, on the basis of the dynamic load is small, used in vibration isolation vibration reduction requirements, installation height allowed.
Hot ore screen box side plate and beam is made of high quality heat-resistant stainless steel or high quality heat resistant steel manufacturing, the main force plate and side plate connection, side plate and beam connections using ring groove rivet, reliable connection fastening.
Hot mining vibrating screen is working, sieve plate directly contact with high temperature materials, has good abrasion resistance, heat resistance, heat resistant alloy steel casting is adopted.Work sieve plate heat expansion, sieve plate fixation device adopts oblique clamp, and is equipped with thermal compensation mechanism, can guarantee the working temperature conditions, sieve plate fixation, sieve plate dismantling is convenient.
1. In order to reduce the material impact on sieve plate, screen box by feeding the feeding head is not more than 500 mm, the feeding direction shall conform to the screen material direction.
2. The device must be installed insulation between the vibrator and screen surface (heat insulation water tank or board) in order to reduce sinter of thermal radiation on the influence of the vibrator, guarantee the vibrator work under the allowed temperature.
3. The material is 500-1000 ℃ temperature, but the screen allows the temperature of 300-500 ℃.Therefore, on the inner wall of the sieve surface, the funnel and beams of must convulsions or ventilation cooling.
4. The funnel, convulsions cover and heat insulation device shall be fixed on the sieve ontology, the gap between vibration sieve body part and shall not be less than 50 mm.
Transportation and storage
After the screen should be under the condition of horizontal lifting, the lifting to keep balance of sieve.To use wire rope on the lifting hole of sieve box set lifting, are not allowed to other parts of the crane sieve.Sieve is divided into screen box (including vibrator), vibration isolation frame, motor frame three parts transportation and electricity.Drag transportation at the site, the lower part of screen box should be several rollarounds pad, the ground should level off, the wire rope should take larger screen lower steel parts.After the arrival of the goods, the equipment should be according to the shipping list to check whether the equipment is complete, the shipment is damaged in the process.Storage ground level off, the sieve should be sleeper pads, can not contact with the ground, nor is soaked by water.In open air, upper part should be covered.
Installation and commissioning
1. Heat ore vibrating screen installation base should be installed according to the size of general layout is shown in embedded steel plate (30 mm) thickness of steel plate.Bearing steel plate under due beams, and steel plate fixed on the beam.Top of the embedded steel plate should be in the same horizontal plane, and the error is not more than 3 mm.
2. The installation of the electric machine frame foundation beam support, its concrete foundation after being good motor height adjustment, in the secondary water.
3. The installation based on the use of steel plate and the anchor bolts are installed units themselves preparation, equipment factory not attach the spare parts.
4. Complete the spring bearing and electrical rack, adjusting the relative position, and after preliminary fixed, progressive damping spring.Spring loaded before, should according to the actual stiffness value end tag by matching, spring stiffness of each sieve machine protection should be consistent, spring after the center line and the spring support should be perpendicular to the plane.
5. Install the spring vibration isolation frame, and then a vibration isolation spring installed in vibration isolation frame.
6. Add a sieve to lift, the screen surface inclination of conform to the requirements of the general layout, then slowly put down, is located on a vibration isolation spring.
7. A sieve is installed, should maintain screen box and vibration isolation frame transverse level, usable level measured in screen box front-rear end, if not, can adjust the height of spring support.
8. Electrical rack installation, requirements and vibrator motor axis axis in the same vertical plane, after considering the sieve surface material supporting spring compression deformation increases, the motor axis should be lower than vibrator axis 3-5 mm.
9. When installed in the middle of the coupling between two vibrator, should be in strict accordance with the manufacturer do mark on the connecting flange installation, ensure that two vibrator eccentric block relative position.
After 10. Vibrator, such as more than six months, before installation should be the vibrator unpick and wash clean all parts, bearings and labyrinth slot into the right amount of no. 2 industrial lithium base grease.
11. Vibrator after the installation, use hand moving eccentric block, if there is too much resistance or stuck phenomenon, must find out why.
12. Check all the installation bolt fastening.
13. Empty load test run six to eight hours, observe sieve operation commissioning process, vibration balancing, no lateral oscillation and abnormal noise.
14. Hot griddle six to eight hours after the commissioning, shall check the working temperature of vibrators bearing, bearing the highest temperature no more than 75 degrees Celsius, should also check the sieve plate and fastening situation of vibrator, found loose should tighten in time.
15. The first time, after the production of thermal state after six to eight hours work, makes the screen box should be cool to room temperature, the sieve plate and vibrator of the bolt to tighten again.
Use and maintenance
1. The operator should be familiar with the equipment before operation, do equipment total review, check each part bolt looseness, screen surface was damaged.
2. A sieve start should follow the order process system, try to avoid belt is expected to start, after waiting for sieve smooth operation to feed.
3. Hot mineral screen should be in the process of work often observe whether sieve running smoothly, that the movement is not normal or abnormal sound, it must immediately stop check, find out the reasons, troubleshooting.
4. Sieve parking should comply with the order process system, in addition to the special accident, has banned materials after parking or continue to feed.Sieve after parking, should check whether the bolt is loose, if found loose should tighten in time.
5. In the process of operation in case of sudden shutdown, must continue to screen surface ventilation cooling, prevent the screen makes the screen box overheating and burning material deformation.
6. After parking should be clear the screen surface and sieve the surrounding environment.
Attaches great importance to the vibrator and screen box, sieve plate and the connecting bolt fastening situation, if found loose should tighten in time.
8. Screen box side plates and beams are made of high quality heat-resistant stainless steel, are not allowed on the sieve box welding of other things, lest affect material properties.
9. Sieve plate fastening device of the butterfly spring is used as fasteners thermal expansion compensation, failure of the butterfly spring should be replaced in a timely manner.
10. Sieve plate hot material in direct contact and wear and tear, reason should be regularly check the work situation, such as found that cracks have appeared on sieve plate should be welding repair in time, lest damage cracks expand.
11. Vibrating screen in thermal state, not allowed to use cold water spilled screen box and sieve plate, to prevent the screen box caused by rapid cooling and sieve plate deformation and cracking.
12. Helical spring inside accumulate kuangfen, will affect the normal work of the spring, often should use compressed air purging cleaning.
13. Vibrators bearing adopts 2 industrial lithium base grease lubrication, oil once a week, normal oil is unfavorable and overmuch, lest cause bearing overheating.
14. Vibrator used after six months, should check the oil refers to the situation, such as dry or lump, should be timely cleaning in fat.For bearing cleaning 1 to 2 times a year.