Debugging and troubleshooting of stone removal machine
01 / inspection before startup ★ remove the front and rear transport fixing plates before startup, and then remove the bolts and
01 / inspection before startup
★ remove the front and rear transport fixing plates before starting the machine, and then reinstall the bolts and ground wires; Whether it is installed on the foundation that accurately corrects the vertical and horizontal directions of the base with a level gauge; Whether the stone removal machine has been properly fixed on the foundation with anchor bolts; Whether the bolts at each connection are tightened; Whether there are sundries left in the stone remover body; Whether the damper is flexible.
★ check whether the voltage and frequency comply with the provisions on the nameplate of the vibration motor; Check whether the upper and lower screen grids are installed in place and the combination of screen (screen) and wooden frame.
02 / no load commissioning
■ amplitude check:
★ the amplitude has been adjusted to 4 ± 0.5mm before leaving the factory;
★ if the amplitude is to be adjusted, the eccentric weight of two vibration motors shall be adjusted exactly the same;
★ the amplitude can be checked only during the operation of the stone remover.
★ the vibration angle relative to the inclination of the screen surface is generally 40 ± 5 °; Since the vibrating motor is bolted to the plates on both sides of the vibrating screen ship, and its included angle with the horizontal line is certain, the change of the vibrating angle is only related to the slope of the screen surface.
■ check the inclination of the stone removal screen surface:
★ generally 6.5-8.5 ° (depending on load and material type)
★ loosen the lock nut during adjustment, turn the handle to raise or lower the adjusting support, so as to adjust the inclination of the screen surface.
■ air volume regulation:
★ adjust the damper regulating valve until 50-90mm water column is displayed on the pressure gauge.
■ stone removal adjustment:
★ adjust the reverse blowing plate to the low position and tighten the regulating hand wheel of the reverse blowing plate.
03 / commissioning with materials
■ feeding:
★ adjust the damper control valve until the material appears "boiling" on the lower screen surface.
■ adjust the opening of the back blowing plate from the left and right sides until stones and individual grain particles flow out of the stone discharge port; the thickness of the material layer on the stone removal screen surface in front of the back blowing plate shall not be greater than 10-15mm. If the material layer is too thick, there will be problems in the separation of grain and stone.
■ check the distribution of materials in the feeder box:
If the material distribution is uneven, the conical port can be rotated during the work of the stone remover until the material distribution on the left and right sides is uniform. If the conical port is not adjusted to the desired material distribution effect, only the deflector in the feed inlet can be adjusted after stopping.
04 / role of various adjustment methods
■ damper control valve (damper)
★ after opening: the air increases; the negative pressure increases; the materials on the upper screen surface increase and the materials on the lower screen surface decrease; the grain in the stone discharge opening decreases
★ after closing: the air decreases; the negative pressure decreases; the materials on the upper screen surface decrease, and the materials on the lower screen surface increase; the grain in the stone discharge opening increases
■ slope of screen surface
★ increase the slope: the materials on the upper and lower screen surfaces are reduced accordingly; the grain in the stone discharge opening is reduced accordingly
★ reduce slope: the materials on the upper and lower screen surfaces increase accordingly; the grain in the stone discharge opening increases accordingly
■ reverse blowing plate
★ open: the air convection decreases; the grain in the stone outlet increases
★ close: the air convection increases; the grain in the stone outlet decreases
■ note: this model of stone remover needs repeated tests to find the cooperation of various adjustment methods.
5 / troubleshooting
| Malfunction | Cause of failure |
| Can't remove stone well | The air volume is too large (the negative pressure is too high) the inclination angle of the screen surface is too large, and the reverse blowing plate is too small. The screen has been broken and the screen hole has been blocked by debris or dust |
| Stone discharge too many grains in the grain | The air volume is too small (the negative pressure is too small), the inclination angle of the screen surface is too small, and the blowback plate is opened too large |
| Fluctuation of material quantity on screen surface | Incoming material flow fluctuates, and the inclination angle of screen surface is too small Dust is accumulated in the stone removing screen frame between the air equalizing plate and the screen |
| Negative pressure continues to increase | The dust around the stone remover enters the stone remover screen frame, and the rubber ball in the upper screen frame has been worn out |
