Overview of wet sieve geotextile effective aperture tester:
This instrument is suitable for the determination of the effective pore size of all types of geotextile products, and its performance meets the requirements of the instrument for the determination of the effective pore size of geotextiles and related products-wet sieve method GB / T17634-1998
★时间设定：分两档 0～99.99s 0～99分59s
★匹配电机: 2800r/min 550W
★电 源：Ac220V±10% 50Hz
Technical parameters of wet sieve geotextile effective aperture tester:
★ Inner diameter of holder: Φ176mm
★ Vibration frequency: 50Hz
★ Vibration amplitude: 1.5mm (vibration height 3mm)
★ Time setting: two levels 0 ～ 99.99s 0 ～ 99 minutes 59s
Matching motor: 2800r / min 550W
★ Power supply: Ac220V ± 10% 50Hz
★ Dimensions: 680 × 420 × 750mm
★ Weight: 50Kg
Structure and working principle of wet sieve geotextile effective aperture tester:
The geotextile effective aperture tester is composed of a bottom plate, a cover, a holder and a sieving device, and a sprinkler system. There are mounting slots at the four corners of the bottom plate, which can be fixed to the foundation or the workbench with bolts; the control area at the upper left corner of the cover is equipped with a counter, power switch and start key. The outer cover is not in direct contact with the screening vibration device, reducing the impact of vibration.
The spray system is installed on the pillar on the right side of the bottom plate. It consists of a water inlet, a flow switch, a metal hose, and a shower head. The shower head is equipped with a splash-proof cover. When in use, the shower head is placed in a transparent cover and covered with a splash-proof cover. Attach the clip to prevent water from splashing. The collection tank is rigidly connected to the vibrating head. A collection tube is provided on the left side. The bottom of the collection tank is equipped with a supporting grid. The sample is laid on the grid and compressed with a clamper. Tighten.
The specific operation method of the flip bolt and the star handle is: due to the water-proof requirement between the collecting tank and the holder, the outer wall is equipped with a sealing ring, so there are two long opening grooves on the cap screws. When the device is difficult to remove, the cap screw can be used to rotate in the opposite direction, and its bayonet will lift the holder for easy operation.
★ Geotextile effective aperture tester transmission system: The attached concrete vibrator drives the eccentric to rotate through the belt-gear to drive the vibrating head to generate a certain frequency and amplitude vibration. The motor and the vibration element are separately installed, and the flat plate and the bottom plate are supported by four spring damping columns. The vibration head and the flat plate are also connected by a spring damping column to reduce the impact of the vibration on the instrument.
External environment of wet sieve geotextile effective aperture tester:
★ The table is flat, stable, and has good anti-vibration performance.
★ Isolated from vibration sensitive instruments.
★ Temperature 10 ～ 30 ℃ Humidity ≤80%
★ Power: Ac220V ± 10% 50Hz
★ The external water supply must be a regulated water source (recommended flow 500mL / min at 300KPa pressure)
Operation steps of wet sieve geotextile effective aperture tester:
★ Remove the holder, lay the sample flat on the support grid flat without force, and then compress it with the holder. The sample should be kept horizontal.
★ Spread the granular material selected according to the standard evenly on the sample.
★ The water inlet is externally connected to a regulated water source. The shower head is placed in a transparent cover, covered with a splash-proof cover, and the clip is closed. The flow regulating valve is opened to spray water on the sample.
★ Set the vibration time on the timer (according to GB / T17634-1998 standard, it can be set to 600 seconds, the instrument timer has two gears, which can be set to 0-99.99s and 0-99 minutes and 59s respectively). . Turn on the power and start the test.
★ The particles passing through the sample flow out of the collection tank and are collected.
★ When the set time is reached, stop the instrument from vibrating.
★ Collect failed particulate materials and samples.
★ Reload the sample and press the start key to reset.
★ Test results are processed according to GB / T17634-1998 standard.
★ After the instrument is finished, turn off the power and clean the instrument.
Precautions for wet sieve geotextile effective aperture tester:
★ This instrument has a certain vibration frequency when working, and the workbench must be isolated from other equipment.
★ If sand is used as the test particles, please pay attention to the cleaning of the instrument.
★ After the test, please clear the water and debris in the geotextile effective aperture tester.
★ For the eccentric shaft and supporting spring, and other moving parts should be regularly filled with lubricating oil.