CZZS-2 geotextile effective pore size measuring instrument meets many national requirements - Database & Sql Blog Articles

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Geotextile effective aperture tester

(wet sieve method) geotextile effective pore size measuring instrument

TG-2 type

one,

Geotextile effective aperture tester

Overview:

This instrument is suitable for the determination of the effective aperture of all types of geotextile products.

GB/T17634-1998 "Determination of effective pore size of geotextiles and related products - Wet sieve method"

Standard requirements for the instrument.

two,

Geotextile effective aperture tester

Test principle:

The sample and the graded granular material are sprayed with water at a predetermined vibration frequency and amplitude by using a single layer of geotextile without tension and a sample of the related product as a screen to pass the sample of the particulate material through the sample. The effective pore size of the sample is indicated by the passing particulate material and the specific particle size.

three,

Geotextile effective aperture tester

Technical Parameters:

1. Inner diameter of the holder: Φ176mm

2, vibration frequency: 50Hz

3, vibration amplitude: 1. 5mm (vibration height 3mm)

4, time setting: two files 0 ~ 99. 99s

0 to 99 minutes 59s

5, matching motor: 2800r/min 550W

6, power: 380V

7, dimensions: 680 × 420 × 750mm

8, weight: 50Kg

four,

Geotextile effective aperture tester

Structure and working principle:

1, appearance (see Figure 1, outline drawing)

The instrument consists of a bottom plate 1, a cover 2, a holder and a screening device, and a spray system.

The bottom plate 1 has a mounting groove at four corners, which can be fixed on the foundation or the workpiece table by screws.

The upper left corner control area of ​​the cover 2 is equipped with a counter 17, a power switch 15, and a start button 16. The cover and the screening vibration device are not in direct contact, reducing the effects of vibration.

The sprinkler system is installed on the pillar on the right side of the bottom plate, and is composed of a water inlet 14, a steam switch 13 and a metal hose 11. The shower head 10 is provided with a splash cover 9 on the shower head, and the shower head is placed in the transparent cover 8 when in use. Cover the splash cover and fasten the clip 7 to prevent water from spilling. The collecting trough 5 is rigidly coupled to the vibrating head 4, and the collecting tube 3 is disposed on the left side, and the collecting trough bottom matching supporting grid 18 sample is laid on the grid. It is pressed by the gripper 6, and then pressed with the turning bolt and the cap bolt 12.

The specific operation method of turning the bolt and the opening bolt is: due to the anti-seepage requirement between the collecting tank 5 and the holder 6, the outer wall is provided with a sealing ring, so that two opening bolts are provided with a long groove, when When the holder 6 is difficult to take out, the cover bolt can be reversely rotated, and the bayonet will lift the holder for convenient operation.

2. Transmission system:

The eccentric wheel is driven by the attached concrete vibrator through the belt and the gear to drive the vibrating head to generate a certain vibration frequency and amplitude vibration. All the transmission components are mounted on a flat plate, and the flat plate and the bottom plate are supported by four spring damper columns. The vibrating head and the plate are also connected by a spring damper column to reduce the impact of vibration on the instrument.

3, electrical control

Fives,

Geotextile effective aperture tester

External environment:

1. The workbench is flat, stable, and has good anti-vibration performance.

2. Isolation from instruments that are sensitive to vibration.

3, temperature 10 ~ 30 ° C humidity ≤ 80%

4, power supply: Ac380V ± 10% 50Hz

5, external water supply must be regulated water source (recommended flow 500mL / min flow 500mL / min)

six,

Geotextile effective aperture tester

Steps:

1. The holder 6 is taken out, the sample is flattened without any force on the support grid 18, and then pressed by the holder, and the sample should be kept horizontal.

2. Spread the granular material selected according to the standard evenly on the sample.

3. Turn on the power and turn on the power at switch 15.

4. Set the vibration power time on the timer 17 (according to GB/T17634-1998 standard can be set to 600 seconds, the instrument timer has two-speed timing function, respectively, the range can be set from 0 to 99.99s and 0 to 99 minutes and 59s) .

5. The water inlet 14 is connected to the regulated water source, and the shower head 10 is placed in the transparent cover 8 and covered.

The splash cover is attached with the clip 7 and the flow regulating valve 13 is opened to spray the sample.

6. Press the start button 16 to start the test.

7. The particles passing through the sample flow out of the collecting tank 3 and are collected.

8. After the set time has elapsed, stop the instrument from vibrating.

9. Collect the failed particulate material and sample.

10. The test results are processed according to the GB/T17634-1998 standard.

11. After the instrument is finished, turn off the power and clean the instrument:

Seven,

Geotextile effective aperture tester

Precautions:

l. The instrument has a certain vibration frequency when working, and the workbench must be isolated from other equipment.

2. If sand is used as the test granule, please pay attention to the cleaning work of the instrument.

3. After the test is over, please clean the water and debris in the instrument.

4. Lubricate the eccentric shaft and the support spring, as well as other moving parts.

Geotextile Effective Aperture Tester Product Picture: