Feed pellet durability tester is PDI-2 afor pellet feedPDIvalue of the device under test,It is used to measure the crushing force of feed particles in the process of conveying and handling the finished feed.The pellet feed produced by the feed mill should have durability to withstand the impact of the transportation process and reduce the fine powder.

Working principle

Sampling500 grams of finished granular material after screening into the PDI box for simulation experiments, the proposed feed in the loading and unloading, transportation, storage process of collision, friction, rolling and other motion state, so that the particles powder, after screening weighing, calculate the powder rate index.

Main technical parameters

1Number of slewing boxes:2One

2Rotary speed:50Turn/Points

3Number of turns:500Turn/Times

4Time of use:10Minutes

5Power distribution:180W   1440r/min

6Overall dimension:700*480*800mm

1. Main structure

（1), slewing box:The two rotary boxes are symmetrically configured, and two sets of data can be obtained at one time.

It is composed of a box body, a box cover and a buckle. A sealing material is glued in the box cover to make the box cover and the box body tightly sealed without powder leakage. The dimensions are:310*310*150

（2), control boxThe use of digital display counter, stable and reliable work, to a predetermined number of turns automatically shut down, equipped with a manual adjustment device, so that loading, discharging more convenient.

（3), transmission box:Including motor, worm gear reducer, coupling, half shaft connecting plate.

（4), base:The fuse is located near the lower power outlet on the rear side of the cabinet.

（5）、Power plug:Use voltage220V  50HZ

First, the testing process

1. Weigh the sample to be tested after drying the powder with an appropriate sieve.500g (weightA), put into the durability test machine, at every minuteRolling speed of 50 rpm for 10 minutes.
2. The rolled sample is sieved again to powder and weighed (weightB）。

Second, the calculation

PDI value% = B(Weight after sieving) g×100

         A (weight before sieving) g

Three, the selection of sieve

The durability of the particles is measured after cooling, when their temperature is different from room temperature.When ± 6 ℃, it means cooling. The time from cooling to measurement is calculated in hours and is written in the lower right of the durability. For example, when the durability measured 4 hours after cooling is 95%, the expression is: 95