Standard Sieves-DAHAN Vibration Machinery

Introduction of Standard Sieves

Standard sieve is an instrument for measuring particle size. It consists of a woven wire mesh with round or square holes. It is mainly used in laboratories for grading and particle size determination of powders, bulk particles and suspensions. The diameter is 75mm. , 100mm, 200mm, 300mm, 400mm, among which standard sieves between 200mm and 300mm are more common, which can quickly and effectively measure the size of solid particles from 125mm to 20 microns.

Standard sieves

Types of Standard Sieves

General model

Metal Wire Mesh Standard Sieve

National standard: GB/T6003.1-1997, ISO3310-1: 1990 R20/3, R20, R40/3 series

Mesh size: 2.36mm-0.038mm

Screen frame diameter: 75mm/200mm/300mm

Screen material: Brass, Tin Bronze, Stainless Steel

Application: High-precision screens, mostly used in the diamond industry
Metal Perforated Plate Standard Sieve

National standard: GB/T6003.2-1997, ISO3310-2: 1990 R20/3, R20, R40/3 series

Mesh size: 1mm-125mm

Screen frame diameter: 200mm/300mm

Screen material: copper

Application: particle size detection of materials with impact on the screen surface
Electroforming Standard Test Sieves

National standard: GB/T6003.3-1999/ISO3310.3

Mesh size: 5μm-500μm (tolerance 2-3um)

Screen frame diameter: 75mm

Screen material: stainless steel

Application: Produced by precise electrochemical method, suitable for laboratory high-precision powder detection

Special model

Stainless Steel Standard Sieves

For smaller particles, a variety of mesh sizes are available to accommodate different particle sizes. However, stainless steel can be more expensive than other materials and may not be suitable for some applications that require specific properties, such as electrical conductivity.
Brass Standard Sieves

Usually used for larger particles, it is relatively cheap and has a higher abrasion and tear resistance. However, brass can tarnish over time and may not be suitable for some applications requiring high-precision measurements.
Nylon Standard Sieves

Can withstand high temperatures and abrasive materials, making it suitable for many different types of particles, suitable for harsh industrial environments. However, nylon mesh may not be as durable as other materials and may not be suitable for high-precision measurements.

Standard Sieves Specification

NO.	Name	Application	Specification
1	Standard Soil Sieve	Analyzing the particle size distribution of soil, it is possible to separate soils of different fineness	0.075mm, 0.25mm, 0.5mm, 1mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 13mm, 20mm, 40mm, 60mm
2	Standard gravel screen	Determination of sand, silt and clay	2.5, 5, 10, 16, 20, 25, 31.5, 40, 50, 63, 80, 100mm, with bottom cover or 2.36, 4.75, 9.5, 16, 19, 26.5, 31.5, 37.5, 53, 63, 75, 90mm, with bottom cover
3	Standard Pharmacopoeia Screen	Analysis and testing of pharmaceutical powders, pharmaceuticals, and pharmaceutical granules	10 mesh, 24 mesh, 50 mesh, 65 mesh, 80 mesh, 100 mesh, 120 mesh, 150 mesh, 200 mesh
4	Standard sieve for stone	For determination of particle size distribution of sand, aggregates, soil	1, 1.7, 2.5, 3.15, 5, 7.1, 10, 16, 20, 25, 35.5, 40, 45, 56, 63mm
5	Standard sieve for cement	Check the fineness of cement	A total of 5 pieces, including the bottom and cover, the specifications are 0.125, 0.71, 0.9, 5, 20mm
6	Aggregate special standard sieve	Determining aggregate particle size distribution	80, 60, 50, 40, 30, 25, 20, 10, 5, 2, 1, 0.5, 0.2, 0.075mm

Principles of Standard Sieve

Sieving is a physical method of separating mixtures. It involves passing a mixture of particles of different sizes through a sieve or screen. Smaller particles pass through the sieve holes and larger particles are retained by the sieve.

Step 1: Raw Material Selection - Raw Material Screening

In terms of raw material selection, the machinery used by most manufacturers is not fine enough to screen the raw materials, so that the production process contains a lot of impurities, or cannot select good raw materials, and the purity of pharmaceutical raw materials cannot be well grasped. You need to use standard sieve for detection.

Step 2: Production Process - Filtration and Sieving

During the production process, due to various factors such as mechanical vibration, granular semi-finished products are easily broken and turned into small pieces or powder, which affects the output and quality. For liquids, it is more necessary to use experimental sieves for filtration and sieving to filter out impurities and detect the content of finished products.

Step 3: Finished Product - Screening Test

When the product is made into a finished product, it is necessary to select the finished product, and select a better product for packaging, which also requires analysis and screening.

Benefits of Standard Sieves

High screening accuracy

Opening sizes from 5 inches (125 mm) to 635 mesh (20 microns) allow for "micro" sieving up to 5 μm.

Standards compliant

The mesh conforms to the GB6003.1-1997 standard, which can ensure the consistency and interchangeability of standard sieves of the same model produced at any time.

Multi-layer stacking use

It can be used singly or stacked in 8 layers (including sieve bottom), and a material can be continuously divided into 7 particle segments of different specifications.

304 stainless steel

The screen frame is made of SUS304 stainless steel by stretching and polishing, the wall thickness is 0.6mm, the gloss is uniform, durable, and non-magnetic.

High temperature resistance

The screen mesh and the screen frame are fixed by soldering to prevent the problem of loosening and shaking, and can work stably at a temperature of >300 degrees.

Can be timed

It can be equipped with an automatic control timer, which can be set from 1 to 99 minutes to ensure the repeatability and consistency of the experiment.

Structure of Standard Sieve

structure and details

The structure of a standard sieves consists of two main components: a frame and a screen.

1. Frame: The frame of a standard sieve is usually made of brass or stainless steel and consists of a ring with a fixed depth. The frame is designed to hold the screen tightly in place and provide support for the screen during use.

2. Mesh Screens: Mesh screens for standard screens, usually made of brass, stainless steel, or other materials, are designed to retain particles of a certain size while allowing smaller particles to pass through. The screen is installed on the frame, and the size of the mesh determines the particle size that can pass through the screen.

Screens are typically attached to the frame using various methods including soldering, welding or gluing. The mesh screen is stretched tightly over the frame and held in place to keep it from loosening during use.

Standard screens are available in a variety of sizes and mesh openings to suit different particle sizes and applications. The dimensions of the frame and screen openings are carefully calibrated to ensure accurate and reliable particle size analysis.

Available Options

Standard sieves are available in a variety of options, including:

structure and details

1. Mesh: There are various meshes to choose from, which determines the particle size that can pass through the sieve. Mesh size is determined by the number of pores per linear inch or the pore size in microns.

2. Frame material: The frames of standard sieves are made of different materials including brass, stainless steel and aluminum. The choice of frame material depends on the specific application and desired properties, such as corrosion resistance or durability.

3. Frame Diameter: Standard sieves come in different frame diameters, usually between 3 inches and 18 inches. The choice of frame diameter depends on the specific application and the size of the particles being analyzed.

4. Depth: Standard sieves come in different depths, usually between 1" and 2". The depth of the screen affects the amount of material that can be processed at one time and can be selected according to the specific application and the amount of material being analyzed.

5. Shape: Standard sieves come in different shapes including round, square and rectangular. The shape of the sieve can be selected according to the specific application and the size of the particles being analyzed.

6. Certification: Standard sieves can be certified to meet specific industry standards such as ISO or ASTM. Certified sieves are calibrated to ensure accurate and reliable particle size analysis and are commonly used in quality control and research applications.

Application of Standard Sieves

Application

The standard sieve can be used for particle size structure detection of granular and powdery materials, liquid solid content and debris screening, filtration and particle size analysis. Widely used in scientific research and production departments, laboratories, quality inspection rooms in food, medicine, chemical industry, metallurgy, geological exploration, soil and other industries.

The following are specific applications:

Product	Mesh size	Product	Mesh size	Product	Mesh size
Cassia	14 mesh	Buckwheat	12 mesh	Tenebrio eggs	12 mesh
Insect droppings	30 mesh	Soybean	4-5 mesh	Green beans	10 mesh
Rice	12-14 mesh	Rice flour	30-40 mesh	Cornmeal	30-40 mesh
Flour	50-60 mesh	Cereals	40-50 mesh	Sesame	22-24 mesh
Fried Chicken Burger Bread	20-30 mesh	Mung bean powder	40-50 mesh	Sesame powder	40-50 mesh
Notoginseng powder	100-120 mesh	Pine Pollen	100-120 mesh	Chinese medicine powder	40-50 mesh
Oral Chinese medicine powder	60-80 mesh	Chinese Herbal Mask	80-120 mesh	Pearl powder	120-150 mesh
Dregs	60-150 mesh	Soy milk	80-120 mesh	Honey	80-120 mesh
Soup dregs	120-150 mesh	Tea water	120-150 mesh	Cooking oil	150-200 mesh

The specific industries are as follows:

Customer case

1. Agriculture: Used in agriculture to analyze soil samples, separate seeds, and test the quality of fertilizers and compost.

2. Construction: Use standard sieves during construction to analyze the particle size distribution of aggregates such as sand, gravel, crushed stone, and other building materials.

3. Mining: Analysis of the particle size distribution of ores and other materials such as coal and limestone.

4. Food processing: used to separate and classify food ingredients such as flour, sugar and spices according to particle size.

5. Pharmaceuticals: Analyze the particle size distribution of pharmaceutical powders and other pharmaceutical ingredients.

6. Environment: Used for environmental testing, analyzing the particle size distribution of sediment samples, and monitoring air and water quality.

Standard Sieves Mesh Particle Size Conversion

Particle Size Conversion

Definition of mesh: refers to the number of meshes in the area of 1 inch × 1 inch, that is, the number of meshes of the screen, and the number of meshes that the material can pass through the mesh is defined as the number of meshes: such as 200 mesh, it is the number of meshes. The material can pass through a screen with 200 meshes in 1 inch x 1 inch. By analogy, the larger the mesh number, the finer the material particle size, and the smaller the mesh number, the larger the material particle size.

No.	Type	Mesh(mm)	No.	Type	Mesh(mm)
1	8#	2.360	15	70#	0.212
2	10#	2.000	16	80#	0.180
3	12#	1.700	17	100#	0.150
4	14#	1.400	18	120#	0.125
5	16#	1.180	19	140#	0.106
6	18#	1.000	20	170#	0.09
7	20#	0.850	21	200#	0.075
8	25#	0.710	22	230#	0.063
9	30#	0.600	23	270#	0.053
10	35#	0.500	24	325#	0.045
11	40#	0.425	25	400#	0.038
12	45#	0.355	26	500#	0.028
13	50#	0.300	27	>500#	<0.028
14	60#	0.250

Grouped Equipment

Customer case

There are several types of sieve machines that can be matched with standard sieves, including:

Ultrasonic sieve shaker: It is an ultrasonic sieving system added to the conventional model, with higher and more accurate inspection accuracy. It is a commonly used inspection equipment for mesh blockage when the laboratory is doing fine powder sample screening.

Rotap sieve shaker: It has two vibration forms of slapping and reciprocating. It is fast in feeding and not easy to block. It is suitable for laboratory screening and testing of materials, especially for the production and classification process of diamond micropowder and superhard materials. It has high strength and large Repeatedly used frequently.

Magnetic levitation sieve shker: covers mechanical physical vibration and high-frequency electromagnetic vibration, and integrates three functions into one - up and down vibration, back and forth reciprocating motion, and left and right swing, so that the material generates a reciprocating suspension motion inside, and screening any material will not Residue on the mesh, the fine can be sieved to 5 microns.

Electromagnetic sieve shaker: It adopts electromagnetic drive and three-dimensional movement, and can sieve to 20 microns (635 mesh), which solves the problem of ultrafine powder dry sieving.

Standard Sieves Manufacturers

Xinxiang Dahan Vibration Machinery Co., Ltd. mainly produces standard sieves, standard soil sieves, standard pharmacopoeia sieves, standard vibrating sieves, ultrasonic test sieves, magnetic suspension test sieves and other experimental sieves. Screening of the particle size structure, liquid solid content and debris amount of granular and powdery materials by scientific research and production, laboratories, quality inspection rooms and laboratories of colleges and universities in the departments of powder, building materials, national defense, and geology, etc. Filtration and detection are also commonly used in the fields of ordinary abrasive particle size composition inspection and superhard material production grading.

The manufacturer promises: Standard parts are in stock, 7 working days for special customization, free shipping from the manufacturer, and quality problems within 30 days, users can choose free maintenance or replacement, one-year warranty, and lifetime warranty.