Safety Operation Specification of Polyurethane High Frequenc
Writer： admin Time：2020-04-20 15:45 Browse：℃
Polyurethane high-frequency screen is widely used in dry, wet screening, classification and dehydration of various materials in industries such as mineral processing, coal preparation, chemical industry, brick making, food, pharmaceutical, alkali making, chemical fertilizer, paper making, etc. It is used for fine particle classification in the grinding and grading process of concentrators. The difference between the appropriate feed concentration, feed particle size (-200 mesh particle content), and the difference between the required particle size and the feed particle size is less than 30 percentage points Under the conditions, the screening efficiency is as high as 70%. Due to the high screening efficiency, it can greatly reduce the circulating load and the content of qualified particles in the screen, thereby improving the processing capacity of the mill (generally it can be increased by 5 to 10 percentage points). The sieving process strictly controls the particle size of the material under the sieve, eliminating the adverse effect of excessive coarse particles on the concentrate grade; in addition, the slurry has the effect of stratification according to density under the action of high-frequency small-amplitude oscillation on the screen surface, and high-density small particles are easy It sinks to the sieve surface and penetrates through the sieve, so it can significantly improve the taste of the sieve.
Technical operation regulations
1. Check before starting.
2. Start with no load and start feeding after the operation is stable.
3. Adjust the current of each electromagnetic vibration system and change the amplitude of the screen surface according to the feeding situation during the work. The current control range is between 0.7-2.5A.
4. Pay attention to the temperature of the electromagnetic coil at any time, the temperature should not exceed 60 ℃.
5. Check the abrasion of the screen, repair a small area of ??abrasion with epoxy glue, and replace it if it is damaged in a large area.
6. Stop the feeding first when the machine is stopped. After the materials on the screen surface are all discharged, the screen machine can not be stopped. Continue to vibrate to "clean" the screen surface, and then stop after cleaning.
Second, maintenance procedures
1. After each electromagnetic vibration system is adjusted, it does not usually need to be changed frequently. When parking, just press the stop switch.
2. The gap between the electromagnet and the armature inside the exciter box is controlled at 2-2.5mm, and the current adjustment range is 0.7-2.5A. Under the premise of ensuring the working amplitude and the electromagnet and the armature will not collide, the air gap The smaller the better, the small current and small amplitude should be used as far as possible to ensure the normal operation of the operation, in order to minimize the failure due to vibration and damage to the vibrating parts and screen.
3. Check whether the vibration of the rubber caps of the vibrating arms of the screen is the same, and whether there is any obvious difference. Check whether the rubber cap is tight against the screen. If the rubber cap does not have the tight screen, adjust the position of the rubber cap to tighten the screen.
4. After the sieving machine has been running for 4 hours, check the temperature rise of the electromagnet coil, and tighten the bolts in all parts again, especially the bolts connecting the vibration rod and the vibration shaft.
5. The inclination of the screen surface of the sieve machine is adjusted to 25 degrees ± 2 degrees.
6. The screen is strictly protected and not trampled. It is strictly forbidden to hit the screen surface with hard objects such as wooden rods and irons. If there is a blockage, use nylon brush and clean water to wash.
Safety Operation Rules
1. Strictly implement the technical operation regulations for high-frequency sieve positions.
2. Maintain all security facilities in this position.
3. When the electrical appliance fails, it is strictly forbidden for post workers to handle it by themselves.
4. Pay attention to the working environment and cause injury when dealing with faults or maintenance.
Through the above introduction of polyurethane screen manufacturers, I believe everyone has a certain understanding of the safety operation specifications of high frequency screens. For more questions about high frequency screens, please call Chai Shang Trading Co., Ltd.
