Wholesale of digital cement fineness negative pressure sieve analyzer

1. Purpose

Digital cement fineness negative pressure sieve analyzer According to national standardsGB1345-91Method for Testing the Fineness of Cement0.08mmThe sieve analyzer is a professional instrument used for sieve plate inspection. It has the characteristics of simple structure, easy operation, and reduced energy consumption. It is a cement plant construction company, as well as a research institute and college specializing in cementThe instrument.

2、 Technical parameters

1Sieve analysis test fineness: 0.08mm

2Screening and analysis self-control time: freely set

3Negative pressure at workadjustable range：-4000Pa-6000Pa
4Spraymouthrotation speed 30±2rpm
5SpraymouthDistance from sieve:2-8mm

6Add cement sample25g

7、power supplyVoltage:220V
8Power:1200W

9Work noise<75db<>

10External dimensions880*370*500mm

11、Net weight：40kg

3、 Structural principle

Digital cement fineness negative pressure sieve analyzer It mainly consists of a box, a sieve seat, a vacuum cleaner, a cyclone dust collection device, and a digital time controller.

The box is the main structure of the instrument, and all components are installed inside the box.

The sieve seat is equipped with a synchronous motor, nozzle, hard tube, etc. The test sieve and sieve cover are placed on top. The lower end of the hard tube is connected to the chlorine inlet of the cyclone tube with a flexible hose, and there is also a small opening connected to the negative pressure gauge with a flexible hose.

As a negative pressure source, the vacuum cleaner has its suction port connected to the outlet of the cyclone tube. Its motor can be infinitely adjusted through the pressure knob on the panel to change the working negative pressure of the instrument at any time.

The cyclone dust collection device consists of a cyclone tube and a dust collection bottle. The configuration of the cyclone tube greatly improves the dust collection efficiency, making95%The cement dust falls into the bottle, thereby reducing the frequency of dust cleaning by the vacuum cleaner.

The digital time controller consists of a digital display screen and a timer. On the one hand, it displays the working time, and on the other hand, it enables the instrument to automatically stop at the scheduled time.

After the negative pressure sieve analyzer is started, the vacuum cleaner and synchronous motor begin to work, keeping the sieve seat in a negative pressure state. The cement fine powder to be tested on the test sieve becomes dynamic under the action of the airflow sprayed from the nozzle. The fine powder with a particle size smaller than the sieve aperture is sucked away by the negative pressure suction through the test sieve, while the fine powder with a particle size smaller than the sieve aperture is retained on the test sieve, thus completing the screening process and meeting the requirementsGB1345-91Regulatory requirements.

4、 Operation steps

1The cement fineness negative pressure sieve analyzer is packaged in boxes and plastic bags. After opening the box, the product certificate, packing list, and user manual should be checked for completeness, and the user manual should be carefully read.
2Place the cement fineness negative pressure sieve analyzer on a flat and level ground, open the back door, check if all components are installed properly, and ensure that all connecting pipe openings are tightly connected. Then insert the power plug into it220VThe instrument can be put into use with a reliable grounding in the AC power socket.
3Set the timer to the desired time, turn on the power, and the cement fineness negative pressure sieve analyzer will start working. The instrument will automatically stop working when the set time is up. If the working negative pressure exceeds“-4000C~6000Pa”The range should be adjusted by turning the pressure regulating knob to keep the negative pressure within the range specified by the national standard.
4TheGB1345-91When screening, first weigh it with a balance25gPour the cement sample into the test sieve and cover it with the sieve cover. Then start the cement fineness negative pressure sieve analyzer and wait for the machine to stop. Remove the test sieve and weigh the residue on the balance to obtain the sieve analysis result.

5、 Maintenance and upkeep

1、After each use, gently brush both sides of the test sieve with a brush, and check the sieve against sunlight or light. After passing the inspection, store the test sieve in a dry container or plastic bag.

2When the test sieve is clogged, it can be placed upside down on the sieve seat, covered with a sieve cover for reverse suction, and then cleaned with a brush. If necessary, the vacuum cleaner suction tube can also be pulled out of the cyclone tube and directly sucked onto the sieve, while brushing it clean with a brush. If the sieve is severely clogged, the test sieve can be soaked in water for a period of time before brushing

3After using the instrument, turn off the power switch and wipe the outer surface of the instrument clean with a cloth.

4If you find that the cement powder in the dust collection bottle is almost full, you should remove the dust collection bottle from the cyclone tube (clockwise direction), pour it out, and then remove it again (counterclockwise direction).

5Vacuum cleaners should pay attention to regular dust cleaning to keep the dust collection bag clean and ensure that the negative pressure value meets the national standard requirements. When removing the vacuum cleaner, first unplug the power plug from the socket inside the box, and then turn the front wrench of the vacuum cleaner downwards to detach it from the base. This way, the vacuum cleaner can be removed from the box for dust cleaning.

6When the instrument is used continuously for too long, it needs to be stopped for heat dissipation to extend the life of the vacuum cleaner motor.