Product Overview
The sand and dust test chamber simulates the destructive effects of natural wind and sand climate on products, and is suitable for testing the sealing performance of product shells. It is mainly used for testing the IP5X and IP6X levels specified in the shell protection level standards.
The natural environment simulated by the sand and dust test chamber, such as sand and storms, is relatively rare for us to encounter in daily life. Therefore, if some experiments are directly conducted in natural environments, it will be difficult to find such test environments. The emergence of the sand and dust test chamber has just solved this problem, because it can not only control the concentration of sand and dust during the experiment, but also control the temperature, which can improve the reliability of the experimental results. This has also led to the effectiveness of the sand and dust test chamber in the market.
The working chamber of the sand and dust test box is made of stainless steel plates, while the outer shell of the box is made of cold plate electrostatic spraying to ensure its lifespan. The box door is made of transparent glass, so that the operating condition inside the box can be seen from the outside. If there is a malfunction inside the box, it can be quickly resolved, reducing losses. The fan, like the rain test chamber, uses a low-noise motor, which greatly reduces noise pollution while ensuring good operation of the test chamber. The time controller of the test chamber can display the running time of the equipment well, and if the equipment malfunctions, it can also display the specific time when the equipment malfunctions, which plays a great role in maintenance.
The testing standard for sand and dust test chambers does not require temperature deviation, so there is no circulating fan at the top of the chamber and no circulating air duct inside the chamber. The middle is also different from other types of temperature and humidity test chambers, as it does not have an insulation layer. The test chamber is equipped with a cylindrical inclined sandblasting port on the upper side, and the sample partition is located below the sandblasting port. The partition of the sample has a nominal wire diameter of 50um and a nominal spacing between wires of 75um according to the national standard requirements. The lower part of the partition is an electric heating tube, which heats the air inside the chamber to maintain high temperature and prevent sand and dust from getting damp, because the adhesion of damp sand and dust will affect the sandblasting volume. Some electric heating tubes are also installed in the sand and dust ducts at the bottom of the test chamber to dry the sand and dust. The bottom sand outlet of the funnel is located below the heating tube. The sprayed sand and dust hits the top wall of the inner box and bounces down onto the sample. The vibration table drives the vibration of the inner box to shake off the excess sand and dust, which flows into the funnel groove and enters the sand suction pipe of the bottom fan. The sandblasting fan is then driven into the inside of the test box through the pipe entering the box, thus carrying out the sandblasting cycle.
If the technical conditions of the sample require "initial measurement", it should be measured before the sample enters the testing equipment or before starting the dust prevention equipment blower according to the regulations.
If the sample volume is too large to enter the dust-proof box equipment, the sealed components of the sample can be subjected to dust-proof tests separately according to the product technical specifications.
According to the technical specifications of the sample, a small sample with the same structure as the large sample can be used for dust prevention testing, and the test results represent the large sample.
According to the technical requirements of the sample, the D sand and dust test chamber requires the sample to be loaded during the test. Therefore, the load of the sample should be added during the dust test.
E, as the "dust" stone powder, should be sieved through a 200 mesh sieve according to regulations and kept dry before being put into the testing equipment.
G should regularly replace the stone powder according to the dust prevention test requirements.
Check the suspension condition of the sample before the H test. Pay attention to the possibility of vibration during startup, and prevent the sample from falling off the hook and hitting the wall due to unstable suspension and fixed vibration, which may damage the sample and the dust box.
The joints of the vacuum system must not leak air. Gas flow meters and pressure gauges should be installed and used according to the requirements of the instrument. It is necessary to check whether the vacuum oil in the vacuum pump is insufficient and whether the air volume of the blower is appropriate.