Scraper centrifuge is a continuous operation, intermittent operation of filter centrifuge, its control mode is automatic control, but also manual control. the feeding, separation, washing, dehydration, unloading and filter cloth regeneration processes during the operation of the centrifuge are generally completed at full speed. the single cycle time is short capacity is large, and the dry filter slag and good washing effect can be obtained.
Is a continuous operation, intermittent operation of the filter centrifuge, its control mode for automatic control, but also manual control. the feeding, separation, washing, dehydration, unloading and filter cloth regeneration processes during the operation of the centrifuge are generally completed at full speed. the single cycle time is short capacity is large, and the dry filter slag and good washing effect can be obtained.
I. Working principles
The main working principle of centrifuge is to produce centrifugal force to realize solid-liquid separation, which is composed of feed, washing, liquid discharge and so on.
II. Preparation before boot
1. Open the door cover and check for screw loosening, especially spindle.
2. hydraulic station oil level should be station should be more than 2/3 of the oil standard thermometer label YB-N46.
The main pressure working pressure of 3. gas control box should be more than 4㎏, the explosion-proof pneumatic valve (feeding valve, cleaning valve) can be opened reliably, and the cylinder pressure of material level detection is 2.5~4㎏.
- Before boot, make sure the cover is closed and all screws are tightened.
2. first press the feeding speed button, after the speed (speed read from the tachometer) arrived, press the feeding speed on / off, the feeding indicator light.
3. open the feed valve, start feeding at this time, when the material is full, the feeding indicator lights out.
4. if the machine vibration is small, can open separation speed, if the vibration is large, open cleaning speed, and pay attention to observation, if the vibration is serious, please reduce to the feeding speed.
5. according to the properties of the separation material, nitrogen gas should be filled if necessary to prevent the separation and scraping of.
6. depending on the production process, determine the separation time, after the separation, press the scraping speed button.
- After the reaches the scraper, press the discharge button.
8. scraper, scraper rotation > scraper drop > scraper rise, scraper rotation two > scraper drop > scraper rise, scraper reset, scraper end.
9. when feeding and discharging, the operator shall not leave the post. When feeding, mainly observe the vibration of the machine, outlet, discharge, discharge, mainly check whether the outlet is blocked, motor speed is normal. 10. When the machine is running normally, if there are no special circumstances, please do not press the emergency stop button, especially when running at high speed; if pressed, all the work of the equipment will stop.
IV. Automatic operation (selection function)
1. After manual normal, input the relevant data into the man-machine interface (select accessories).
- If an exception occurs during 2. operation, cut back to manual operation until troubleshooting.
- Fault handling method is similar to manual.
- If the vibration is too large in 4. operation, the machine will stop automatically and cut back to manual processing.
V. Shutdown inspection
1. the opening cover must wait for the centrifuge to stop completely, confirm that the screw and hook have been unloaded, the material level detection limit switch indicator light can be opened, can press the open cover button, when the cover and drum 95 degrees, insert the safety pin. If not, check the compressed air pressure to ensure that the level detection plate is not in the position to open the door cover safely. Similarly, the probe board should not be in the probe position when closing the cover.
2. If want to work in the machine, press the emergency stop button after opening the cover.
3. centrifuge running speed is high, rotation inertia is large, operators must always pay attention to safety, to ensure the safety of personnel and equipment.
4. Clean and replace the filter cloth before work or as appropriate, clean up the material above the hopper, material exploration, etc., and remove the material from the liquid outlet.
5. to check the drum weld, fence, shell parts corrosion, timely reporting.