This standard specifies the terms and definitions for industrial sieves and screening. This standard applies to the special terms for industrial screening. GB/T 15602-1995 Industrial sieves and screening terms GB/T15602-1995 Standard download decompression password: www.bzxz.net
This standard specifies the terms and definitions for industrial sieves and screening. This standard applies to the special terms for industrial screening.

National Standard of the People's Republic of China
Industrial screens and screening Vocabulary
This standard is equivalent to the international standard ISO9045-1990 "Industrial screens and screening terms". Subject content and scope of application
This standard specifies the terms and definitions of industrial screens and screening. This standard applies to the special terms of industrial screening. 2 Terms and definitions
2.1 Material to be screened2.1.1 Particle
Discrete monomer of material regardless of its size. 2.1.2 Particle size: particle size; sieve size of a particle The minimum sieve hole size that a particle can pass through in the most favorable posture. 2.1.3 Agglomerate
Several particles adhered together.
Fines
Particles smaller than the specified size.
2.1.5 Inherent moisture, contained moisture GB/T 15602--1995
The amount of liquid (usually water) contained in a material sample, generally expressed as a percentage of the sample mass. 2.1.6
Surface moisture
The amount of liquid attached to the exposed surface of particles in a material sample, generally expressed as a percentage of the sample mass. 2. 1.7
Bonedry
Bake to constant weight at a specified temperature, that is, the material has no surface moisture. 2.1.8
Bulk density
The mass of loose granular material (including the spaces within and between particles) in air per unit volume. 2.1.9 Relative densityrelative densityThe ratio of the mass of solid particles in a given volume in air to the mass of water in the same volume. 2.1.10 Percent solids The ratio of dry solids to the sum of solid-liquid mixture in a material, expressed as a percentage of mass. 2.1.11 Angle of repose The angle between the generatrix of the pile surface and the horizontal line when the material is in a naturally static pile state, also known as the "natural slope angle" or "internal friction angle". 2.1.12 Feed The material fed into the screen for screening. Approved by the State Administration of Technical Supervision on June 15, 1995 and implemented on January 1, 1996. 2.2 Industrial screens 2.2.1 Screen GB/T 15602--1995 Devices used for screening in industry. Note: The term "screen" is usually the abbreviation of "screen surface" or "screen plate", see (2.2.2). 2.2.2 Screening surface, screen deck A surface used for screening, with regularly arranged, uniformly sized sieve holes. 2.2.3 Woven wire cloth, wire screen A screen surface with uniformly sized square or rectangular sieve holes formed by weaving wires or by two layers of parallel wires welded at 90 degrees. The wires may be pre-bent before weaving. Note: In English, a soft screen surface that can be rolled up is generally called "woven wire cloth". A harder screen surface, mainly made or welded from pre-wrinkled wire, is called "wire screen". 2.2.4 Perforated plate A screen surface consisting of a plate with regularly arranged, uniformly shaped holes. The holes may be square, oblong, circular or other regular geometric shapes.
2.2.5Percentage open area
percentage open area
For wire mesh and wire screen, the ratio of the total area of ​​the holes to the total area of ​​the mesh. Expressed as a percentage. For perforated plate, the ratio of the total area of ​​the holes to the total area of ​​the open part of the plate. Expressed as a percentage. b.
round hale equivalent2.2.6
The size of a square hole in a perforated plate or wire mesh that has a screening effect similar to a perforated plate with specified round holes. 2.2.7Equivalent round holeequivalent round holeThe diameter of a round hole in a perforated plate that has a screening effect similar to a perforated plate or wire mesh with specified square holes. Mesh count
The number of mesh holes per unit length in a wire mesh or wire screen. 2.2.93
wire diameter
the diameter of the wires of a wire mesh measured before weaving. 2.2.10 aperture size the size of the openings on the mesh.
2.2.11 square mesh
a mesh aperture nominally in a wire mesh. 2.2.12
slotted mesh
a mesh aperture in a wire mesh whose dimension in one direction is greater than that in another direction. 3 warp
all longitudinal wires in the mesh after weaving. weft, shoot
all transverse wires in the mesh after weaving. 2.2.15 type af weave the way in which the warp and weft are interwoven.
s-crimp
a continuous bend in the wire formed by preforming or weaving. 2.2.17
Plain weave
A weaving method in which each warp thread crosses above and below each weft thread, and each weft thread also crosses above and below each warp thread.
2.2.18 Twilled weave
GB/T15602--1995
A weaving method in which each warp thread crosses above and below every two weft threads, and each weft thread also crosses above and below every two warp threads.
2.2.19 Punch side
The side where the punch enters the perforated plate.
2.2.20 Plate thickness
The thickness of the screen plate before perforation.
Pitch
The distance between the corresponding points of two adjacent holes in a wire mesh, wire mesh or perforated plate. 2.2.22 Bridge width, bar
The distance between the nearest edges of two adjacent holes in a perforated plate. 2.2.23 Margin
The distance between the edge of a perforated plate and the outer edge of its outermost row of holes. Sifter
A type of sieve that basically performs a translational circular motion in the plane of the screen surface and is generally used to screen smaller particles, such as particles below 1 mm.
2.2.25 Grizzly
A sturdy sieve composed of fixed or movable bars, discs, shaped rotating or rolling cylinders, generally used to screen larger particles (such as particles above 100 mm).
2.2.26 Bar screen
A fixed inclined sieve composed of a number of longitudinal bars spaced at fixed sizes, through which the material to be screened enters from above. Commonly known as "grate screen".
Rod screen
A screen surface composed of a number of parallel wire strips, the wire strips are arranged at right angles to the material flow on the screen. 2.2.28Wedge wire screen, profile wire deckA screen surface composed of a number of triangular or trapezoidal cross-section wires spaced at fixed sizes, in which the screened material passes through holes with gradually increasing cross-sections.
2.2.29Roll screen
A screen composed of a number of horizontal rotating shafts, equipped with a number of elements arranged to form screening holes. 2. 2.30
Revolving screen, trommelA screen mounted on a horizontal rotating shaft or roller, with a screen surface of a cylinder or a truncated cone (the material to be screened is suspended and transported into the rotating screen).
Fixed screen, static screen2.2.31
A static inclined screen that uses gravity to separate a portion of fine particles from dry materials, or a portion of liquid and fine particles from slurries or pulps.
2.2.32Guard screen
A screen used to prevent coarse particles that may interfere with the operation of the machine from entering the machine entrance. 2.2.33
Backing screen
A plate installed under the screen to collect fine particles that pass through the screen surface. 2.2.34Undersize control screen, breakage screenA screen used to separate undersize materials from the feed. 2.2.35 Relieving deck
A sieve installed on the lower screen surface. The size of the sieve hole is generally at least twice that of the lower layer. It is used to reduce the load and wear of the lower screen surface.
2:2.36 Sieves bend
GB/T 15602--1995
A device used to screen fine particles suspended in a liquid through a stationary bending plate, so that smaller particles in the liquid under the sieve can be separated. This device is also used as a primary dewatering device. Reciprocating screen Jigging screen2. 2.37
A sieve or a pair of sieves that transmit horizontal and vertical combined motions by a crankshaft and several connecting rods. The sieve surface is horizontal or inclined at a small angle.
Vibrating screen
A sieve that is vibrated by mechanical or electromagnetic means. 2.2.39 Resonance screen A screen with a vibration period close to the natural vibration period of the elastic frame. 2.2.40 Inclined screen A vibrating screen with linear or circular vibration motion and generally installed at an angle between 10° and 36°. 2.2.41
Horizontal screen
A vibrating screen that moves essentially in a straight line in a vertical plane. It is generally installed horizontally, but can also be inclined by no more than 8°.
High speed screen
High speed screen
An inclined screen with linear or circular vibration motion, generally operating at a frequency greater than 20 Hz. Amplitude
The maximum deviation from the equilibrium position in the vibration motion. In linear motion, the amplitude is half of the total stroke. For circular motion, the amplitude is half of the major axis of the ellipse.
Stroke, throw
The distance between the two extreme positions during the swing. The swing stroke is twice the amplitude. 2.2.45
Eccentricity
eccentricity
The maximum deviation from the equilibrium position in circular vibration motion, generally the radius of the circle. 2.2..46Frequency
For vibrating screens, frequency is the number of vibrations of the screen per unit time, expressed in Hz. Edge preparation
Preparation of the edge of the screen section for durability or tensioning purposes. Screen panel
Prepared screening tool including edge preparation. 2.2.49
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Metal edge used to tighten or fix the screen section. 2.2.50End tensioningTensioning of the screen section parallel to the material flow on the screen surface, also called "longitudinal tensioning". 2.2.51Side tensioningTensioning of the screen section at right angles to the material flow on the screen surface, also called "transverse tensioning". 2.3 The screening process 2.3.1 Screening
An industrial process that separates granular solid materials by particle size by allowing part of the material to remain on the screen surface with sieve holes and the rest to pass through the sieve holes.
2.3.2 Sizing
Sieving granular materials into different particle sizes, each particle size has its size range. 2.3.3 Wet screening
GB/T 15602--1995
Screening usually performed by adding liquid in the form of spraying. 2.3.4 Dry screening
Screening without adding liquid.
2.3.5 Scalping
Removing a small portion of the feed, usually unwanted oversized material. Dewatering
Removing free water from solid materials.
rinsing
removing fines or foreign matter between or attached to larger particles by spraying (usually with water). de-sliming
removing other matter from the feed by dry or wet methods. 2.3.9de-dusting+polishingremoving very fine particles from the feed by dry methods. 2.3.10overflow
the portion of the feed that does not pass through the mesh and remains on the screen surface. underflow
the portion of the feed that passes through the mesh of the screen surface.
2.3.12stratification
the process of causing smaller particles in a layer of material to fall to the bottom through the gaps and larger particles to rise to the top by shaking or vibrating. 2.3.13pegging
the embedding of particles into the mesh is a form of clogging. 2.3.14 Blinding, clogging Very fine particles adhere to the screen surface, thereby reducing or even completely blocking the screen holes, commonly known as "screen paste". 2.4 Products of screening 2.4.1 Product
Usually refers to the material obtained through a certain operation, especially the final material produced through a series of operations, such as screening products, finished products, etc. Screening products can be screened materials or screened materials, which are the materials that the process hopes to obtain. 2.4.2 Size fraction
The range between two specified size limits of a material, and the particle size within this range. 2.4.3 Nominal size
Used to describe the particle size of the product of the grading operation. Mean size
The weighted average of the particle sizes in a sample, batch or delivery of granular materials. 2.4.5
Near-sized material, near-mesh material Particles whose size is close to the size of the screen holes. 2.4.6 Undersize products Undersize Screening products whose size is smaller than the specified size. Oversize products Oversize
Screening products whose size is larger than the specified size. 339
Swing stroke ·
Plate thickness ·
Edge pre-sizing
Weaving type…
Nominal size
Surface humidity
Side tension
Rectangular sieve hole ·
Undersize products
Oversize products
Undersize control screen
Perforated surface
Desludging
Perforated plate
Equivalent circular hole
Surface tension
Protective screen ·
Layering ·
Dry screening
GB/T 15602-1995
Appendix A
Chinese index
(reference)
High frequency screen·
·2, 2, 15
Feeding·
Resonance screen
Fixed screen·
Solid percentage·
Inherent humidity
Roller screen
Curved screen
Relief layer||tt ||Wire mesh
Wire screen
Wire diameter
Rebar width·
Approximate size material
Angle of rest·
Stationary screen·
Percentage of open area
Particle size
Grain size grade
Eccentricity
Average size
...2.2.49
... 2.4.5
#centercentercenter
plainweave
inclinedscreen·
bulkdensity
sieveplate·
siftingoutcoarsematerial
sifter·
sieveholesize…
numberofsieveholes
overscreen·
underscreen·
wetscreen
horizontalscreen·
barscreen·
agglomerate
amplitude
angleofrepose
aperturesize
backingscreen
barscreen
GB/T 15602—1995
Completely dry
Reciprocating screen·
Relative density
Wedge wire screen·
Twill weave·
Rotary screen
Selector·
Circular hole equivalent
Vibrating screen·
Square screen
Drum screen
Appendix B
English index
(reference)
+*.... 2.1. 4
blinding
bone dry
breakage screen
bridge width
bulk density
clogging
contained moisture
de-dusting
de-sliming
dewatering
dry screening
eccentricity
edge preparation
end tensioning :
equivalent round hole
fixed screen
frequency
grizzly
guard screen
high speed sceen||t t||hook ....
horizontal screen
inclined screen
inherent moistu
jigging screen
GB/T15602—1995
. 2.1.7
··2.2.31
margin
mean size
mesh count | thickness
polishing
product
profile wire deck
punch side
reciprocating screen
relative density
relieving deck
resonance screen
revolving screen
rinsing
rod screen
roll screen
round hole equivalent
scalping
GB/T15602—1995
2.2.23
mother's weight
，2.2.21
... 2. 2. 30
screen
screen deck
screen panel
screening
screening surface
side tensioning
sieve bend
sieve size of a particle
sifter -*
size fraction
sizing
slotted mesh
square mesh
static screen
stratification
stroke
surface moisture
trommel
twilled weave
type of weave
underflow
undersize
undersize control screen
vibrating screen
wedge wire screen
wet screening
wire diameter
wire screen
woven wire cloth
GB/T15602-1995
Products required by the state of the art quality
Electricity and health care products ...24
Additional Notes:
GB/T156021995
This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of the Machinery Standardization Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Machinery Standardization Research Institute of the Ministry of Machinery Industry. The main drafter of this standard is Li Nanyan.
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