Cement Fineness Vacuum Sieve Analyzer
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This cement fineness vacuum sieve analyzer adopts thickened whole-piece cold rolled steel cabinet with anti-rust electrostatic spray coating, resisting long-term cement dust corrosion and lab acid-alkali pollution, far more durable than thin-shell low-cost models. All internal vacuum core components are industrial standardized parts, equipped with stable vortex negative pressure motor and high-precision digital pressure sensor, which can lock stable vacuum value within -4000 ~ -6000Pa during continuous testing. The built-in integrated cyclone dust collection structure perfectly solves the problem of filter blockage caused by fine cement powder, greatly extending the service life of filter elements. Standard 150mm stainless steel test sieve with uniform 0.045/0.08mm mesh aperture is matched; all sealing joints are equipped with high elastic silicone rings to prevent air leakage, ensuring no pressure loss during sieving. Every machine undergoes 48-hour continuous aging test before delivery to guarantee stable all-day laboratory operation. The compact vertical cabinet structure with reinforced base avoids vibration during equipment operation.
Extremely Convenient To Operate And Labor-Efficient
Equipped with independent digital display control panel, it supports free adjustable timing range and stepless negative pressure regulation, factory preset standard 120s sieving cycle conforming to global cement inspection standards. After setting parameters for the first time, the machine can store fixed parameters for batch repeated testing without repeated manual adjustment. Fully enclosed dust recycling design collects nearly all fine cement particles inside the machine, no flying dust pollutes lab countertop or operator's clothes, greatly reducing post-test cleaning workload. Split type dust bottle structure allows quick disassembly and powder dumping without disassembling the whole machine. When the preset sieving time ends, the machine automatically stops vacuum suction, freeing technicians to process other samples simultaneously and greatly boost laboratory testing efficiency. The low-noise motor controls running noise below 75dB to build a quiet testing environment.
Extremely Simple Operation, Low Learning Cost
The whole test flow is simplified into three intuitive steps without complex mechanical debugging or professional training:
1. Weigh 25g standard cement sample and pour into clean 150mm test sieve, fasten the top cover tightly;
2. Power on, check real-time digital pressure value on panel to confirm vacuum stabilizes at -4000 ~ -6000Pa;
3. Tap start button, wait for auto stop after countdown, take out sieve and weigh residual coarse particles to calculate fineness residue ratio. The control panel features large clear digital readouts and labeled function buttons, with straightforward operation logic. New lab operators can complete independent standard tests within 3 minutes. All vulnerable spare parts including test sieves, silicone sealing rings and dust filters are universal interchangeable accessories, easy to replace without professional maintenance personnel.
Stable & Accurate Working Principle
This instrument strictly follows GB/T 1345 cement fineness detection standard, relying on negative pressure air flow sieving as core testing principle:
1. Negative pressure generation: Built-in vacuum motor continuously forms stable negative pressure inside sealed sieve chamber to form directional circulating air flow.
2. Fluidization sieving: Internal rotating air nozzle sprays uniform upward airflow to fluidize cement powder, break particle agglomeration and avoid false detection data caused by clustered fine powder.
3. Particle classification separation: Fine cement particles smaller than mesh size are sucked through sieve mesh by negative pressure airflow and collected in the dust bottle; coarse oversized particles remain inside the test sieve.
4. Data judgment: After sieving finishes, technicians calculate cement fineness by weighing residual coarse powder. The digital pressure sensor maintains constant vacuum throughout the whole test cycle, eliminating visual reading errors and unstable airflow defects of traditional manual dry sieving, outputting highly repeatable and authoritative detection data for cement plants, construction labs and third-party inspection institutions.
FAQ
Q1: Which Testing Standards Can This Vacuum Sieve Analyzer Meet?
A: It fully complies with GB/T 1345 national cement fineness testing standard, with adjustable negative pressure range from -4000Pa to -6000Pa, matching all domestic standard inspection requirements. It supports 0.045mm and 0.08mm standard 150mm test sieves for different fineness testing demands.
Q2: Does The Machine Automatically Control The Sieving Time?
A: Yes. The digital panel supports adjustable automatic timing function, default factory setting is standard 120s. After setting target time, the machine will automatically cut off vacuum suction once countdown completes, no manual timing required.
Q3: Is This Machine Dust-Free During Testing?
A: Adopting integrated enclosed vacuum dust collection system, nearly all fine cement powder is collected into internal transparent dust bottle. Compared with open manual sieving equipment, it effectively prevents flying dust, keeps lab environment clean and protects operators from cement dust inhalation.
Q4: Is Professional Training Required For New Staff To Operate This Equipment?
A: No complicated training is needed. The operation panel has clear digital display and marked function buttons, the whole testing process only includes three simple steps. New lab technicians can master complete independent operation within 3 minutes.
Q5: How To Maintain The Machine To Prolong Service Life And Guarantee Test Accuracy?
A: Two key daily maintenance steps: 1) Clean the dust bottle and filter element after daily use to avoid blockage causing negative pressure drop; 2) Clean the test sieve mesh with special soft brush after each test to prevent cement particle clogging. We supply full set of spare parts including test sieves, sealing rings and filters for global after-sales support.
Company Profile
Hebei Wanluda Test Instrument & Equipment Co., Ltd. specializes in test instrument manufacturing. We are a modern integrated enterprise covering independent R&D, production, global sales and full after-sales services. Backed by outstanding technical strength and abundant industry experience, Wanluda delivers premium, diversified testing equipment and customized total solutions for clients worldwide. Our instruments are widely deployed in research institutes, industrial inspection labs, as well as highway, railway, bridge, construction, municipal, water conservancy, power, environmental protection and geological exploration sectors. Centered on customer demands, we keep technological innovation and strive to build a leading brand within the testing equipment industry.
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