Constant air pressure sand and dust test chamber

With the rapid development of modern industrial technology, the application fields of electrical and electronic products are becoming increasingly broad, and the environmental conditions they experience are becoming more and more complex and diverse. Only by reasonably stipulating the environmental conditions of the product and correctly selecting the environmental protection measures for the product can we ensure that the product is protected from damage during storage and transportation and is safe and reliable during use. Therefore, artificial simulated environment testing of electrical and electronic products is an indispensable and important link to ensure their high quality. Artificial simulated environment tests are scientific summaries of actual environmental impacts and are typical, standardized, easy to use, and easy to compare. The diversification of environmental conditions and the importance of environmental testing also put forward more stringent requirements for environmental testing equipment. According to national standard B/.3-Test: Constant air pressure sand and dust test method, -Enclosure protection level (code) B/Rotating motor enclosure protection level, -Motor vehicle retroreflector B/Lamps general safety requirements and tests, B/- We have developed a series of corresponding environmental test equipment based on a series of relevant shell protection level standards. The equipment is reasonably designed, simple to operate and easy to maintain, and all indicators are in line with national standards. This series of dustproof test equipment is used to test the shell sealing performance of products, and is mainly used for tests of the two levels specified in the shell protection level standards.
2. Main technical specifications and parameters of the equipment
. Model studio size:
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. The time setting range is adjustable in hours
3. The nominal wire diameter of the dust used to pass through the metal screen is: , and the nominal spacing between the wires is
. Air flow speed: no Exceed
. Continuous and periodic selection of time setting
. Sand and dust concentration:
. Test dust: dry talcum powder, Portland cement, flue dust, etc.
. Vibration time: ~ Adjustable
3. Test box structure
. This dust-proof test equipment is made of high-quality materials. The surface of the shell and the outer wall of the door are made of high-quality steel plates. The surface is treated with electrostatic color spraying, which is beautiful. smooth. Coordinated color matching, arc-shaped design, smooth and natural lines.
. The inner tank material is made of high-quality stainless steel plate, and is designed to be a closed space during operation, where samples can be placed for shell sealing tests. The indoor sample racks and other accessories are made of stainless steel plates, with reasonable design and durability.
3. There is a large observation window on the door of the box, and there is a lighting device inside the box. During the test, the conditions of the indoor test can be clearly observed, and the sample is clearly visible. The door adopts double-layer silicone sealing strip, which is tightly sealed and easy to open and close. The box is specially designed with a device for placing samples.
. The equipment has a vertical circulation airflow carrying dust, with talcum powder as the dust. The dust is blown into the circulating air duct through the fan at the bottom of the funnel, and then evenly diffused by the air outlet air guide plate on the upper part of the equipment. With the help of the circulating air flow, the dust can be evenly suspended in the test chamber. The amount of talcum powder is calculated per cubic meter of the test chamber. Volume, use no more than once. Stainless steel impeller for driving dust and air outlet guide plate
. There is a dust replacement device at the bottom of the equipment, which can easily replace the used dust.
. In order to ensure that dust does not stick to the box wall and condense, a special device is installed. The device can ensure that dust does not stick to the box wall and condense. The working time of the device is adjustable and can be automatically alternated. Work. . On the premise that the equipment complies with national standards and has stable performance in all aspects, it is more practical and easy to control. Moreover, the equipment is easy to install, simple to operate, and basically does not require daily maintenance.
4. Control system
The main controller of the equipment adopts programmable control, and the LCD screen adopts full Chinese display, which can display the year, month, day, time, working hours, etc. The fan, dust vibration and total test time can be controlled separately
This controller has the following multiple arbitrary setting control functions
. Time (stop, blow): continuous or periodic time setting can be selected at will
b. Vibration time: vibration and stop vibration time automatically alternate
Preset test time: the maximum test time is hours and minutes
. Power on: on and off
Control system equipped Schneider executive components
With timing heating control
Heating system: A heater is installed in the circulating air duct to heat the dust to avoid dust condensation. The heat of the pipe-wrapped mica sheet heating ring is safe and stable. Heating coil
5. Spare parts and technical information
. Provide spare parts (wearing parts) necessary to ensure the safe, stable and reliable operation of the equipment during the warranty period.
. Supplied with 3 standard screens and dust collection devices.
3. Provide operating instructions, instructions for the main accessories that come with it, general structural drawings, packing lists, spare parts lists, electrical schematics and structural schematics, as well as other information required by the seller for the buyer’s correct use and maintenance of the equipment. Other relevant information.
6. Protection system
. No fuse protection switch
. Phase loss, leakage, overall equipment timing, automatic shutdown and other protections for fully sheathed terminal blocks.
7. Equipment usage conditions
. Temperature range: ~3℃
. Relative humidity: ~
3. Atmospheric pressure: ~(~br)
. Power supply requirements :3( )/ Three-phase five-wire system