ZB-DJ100 Beating Degree TesterPrinciple design of pulp beating degree

ZB-DJ100 Beating Degree TesterMeasurement principle: A laboratory routine test instrument designed based on the Schober Rigler method principle, which studies the fiber condition and evaluates the pulp beating degree based on the phenomenon that the tapping degree of pulp is inversely proportional to the filtration rate of pulp suspension.
ZB-DJ100 Beating Degree TesterExperimental operation steps:
1、 Preparation for the experiment
Adjust and confirm the instrument level. Sampling and pulping. Please refer to Appendix A for details. Prepare 2g of dry pulp sample according to regulations, using the following method:
Weigh after drying. This method is relatively slow, but the speed is slower.
According to the concentration of the slurry, convert 2g of dry slurry into the volume of the slurry, and take the amount in a measuring cup.
Squeezing method. Take a small amount of slurry and use an extrusion tool to squeeze it. Take 6g of wet slurry to approximately replace 2g of dry slurry.
Place the obtained sample into the material preparation cylinder, add 200ml of distilled water at 20 ℃± 0.5 ℃, crush the sheet-like slurry and stir well. Continue adding distilled water to reach a volume of 1000ml.
2、 Experiment
Check the copper mesh inside the chamber for defects such as rust spots, damage, or unevenness. Place the chamber in water and soak the copper mesh. If there are defects in the copper mesh, it should be replaced immediately.
Place the infusion chamber on top of the compartment, and pour it into the outer conical surface to align with the conical surface inside the separation chamber.
Rotate the pulley to allow the sealing cone to enter the chamber until the wedge block is retained and locked.
The sealing cone locking operation should use the correct force method. Otherwise, when the wedge retention device is tightened, incorrect force may prevent the sealing cone from being locked
Measure the temperature of the sample in the material preparation cylinder and record it.
Stir the sample evenly and carefully inject it into the chamber.
Place the measuring cylinder under the inclined pipe outlet of the separation chamber, and place another measuring cylinder under the straight pipe to receive water.
Press the retention handle to automatically raise the sealing cone, allowing the slurry to enter the bottom of the chamber. The fibers are retained on the copper mesh, and water flows out through the two outlet pipes of the separation chamber.
Read the beating degree value (SR) from the measuring cylinder when there is no more water from the outlet of the inclined tube in the separation chamber.
Take out the filling chamber and remove the slurry from the copper mesh.
Pour out the water from the two measuring cylinders and rinse the sealed cone and separation chamber.
Replace the sample according to the above steps for the next test.
3、 Processing of measurement results
If the selected pulp is 2g of dry pulp, the beating degree value (SR) can be directly read from the measuring cylinder.
Each slurry should be measured twice, and the arithmetic mean should be taken as the measurement result, but the relative error between the two measurement values should not exceed 4%.