This standard specifies the professional foundation of filtration machinery and separation machinery and the general terminology of the structure and performance of the equipment. This standard applies to the design and production of centrifuges, separators, filters, filters, filter media, membrane separation equipment, and cyclones in industrial production processes, and is also applicable to scientific research and teaching of filtration and separation machinery. This standard does not include laboratory centrifuges and air filters. GB/T 4774-2004 Terminology of separation machinery GB/T4774-2004 standard download decompression password: www.bzxz.net

ICS73.120
National Standard of the People's Republic of China
GB/T4774—2004
Generates GBT4771K
Separating machinery
Terminology
Terminology of separating machinc2004-06-09 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China
2004-12-01 Implementation
Professional basic terminology
Business Department.
Classification of centrifuge
Working process and performance parameters
Centrifuge average
Main seasonal properties of centrifuge
Filter||Filter classification,
Process and performance parameters ·
4.3 Filter mechanism
4.4 Main parts of filter
5 Filter media
5.1 Types of filter media
Performance and life
6 Separation
Separation
5.3 Components
7.1 Cyclone structure
8.2 Operating parameters and performance parameters
References
Chinese reference
English reference
CB/T 4774 2004
This standard replaces GB/T4774-1984 standard for the terminology of centrifugal machines and filters. Compared with GB/T4774-1984 standard, the main changes of this standard are as follows: 1. The standard is divided into two parts
The common professional basic terms are listed separately as chapters: 1. The terminology of the full medium, separation and cyclone parts is added separately, and the definitions of the terms given in the standard are revised and supplemented. This standard is under the jurisdiction of the China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Standardization of Separation Machinery. The drafting units of this standard are General Machinery Research Institute, Dalu University, Sichuan University. The main drafters of this standard are Yang, Ke Lai, Zhu Qixin, Ji Zhun, Fang Puru, and Qunliang. The previous versions of the standards replaced by this standard are: GB/T4774-1984.
GB/T 4774-2004
1 Scope
Separation machinery
Terms
This standard specifies the basic professional knowledge and design of filtration machinery and separators, and the general technical knowledge of their application. B/T4774-2004
This standard applies to the design and production of centrifuges, separators, filters, injection media, membrane separation equipment, and flowmeters in industrial production processes, and also applies to the research and development of filtration and separation machines. This standard does not include chamber centrifuges and chamber gas filters.
2 Basic professional terms
Transformation
The operation of separating solids and other substances from the bulk (or gas) by passing a filtrate (including solid particles and gas) through a filter medium + solid particles and other substances under the action of a driving force or other external force. 2.2
speed
the liquid that flows out of the medium when it passes through the sedimentation tower. 2.3
the liquid that flows out of the sedimentation tower quickly.
settling
is the phenomenon that the solid particles in the fluid are suspended in the liquid due to the action of gravity, centrifugal force or electrostatic force. The solid particles move slowly in the direction of the force field and cannot move quickly. At this time, the solid particles and the mixture with the sedimentation medium are called slurry: the diameter of the solid particles in the slurry is about 1cm--1ocm. larger than the colloid. 2.6 Suspension density is the mass concentration of solids in a suspension, or the solid volume fraction of a suspension in a single volume. 2.7 Emulsion is an emulsion formed by the fine dispersion of a liquid in another (or more) liquids which do not mix with it. 2.Emulsion density is the mass percentage of the solids contained in the emulsion. 2.9
Cavity collind
Non-homogeneous dispersed system formed by particles with a diameter of 1m-(1/8") in the homogeneous medium. GB/T 4774-2004
Material
Various separation objects separated by centrifuge or filter (emulsion, emulsion, etc.). 2.11
Cakesludgesediment
Solid concentrate obtained by separation of suspension from suspension. 2.12
Fller cake resistance
The force produced by the separation of cake resistance. reslstance
A measure of the resistance of a mixture to flow, divided into specific resistance and volumetric resistance. Mass resistance, the solid mass per unit area, is equal to the resistance per unit volume. Volume resistance: the resistance per unit volume. 2. 14
Compression index coupreasibilityIndex is a parameter that indicates the compressive properties of a mixture, and its value is determined by experiment. 2. 15
Sediment, slodge
The solid precipitate obtained by sedimentation separation (including gravity sedimentation and centrifugal sedimentation) is called sediment. 2.16
Cake
The solid matter obtained by filtration during the filtration process. 2. 17
Fmoisiirecontent ot cake
full content of cake
percentage of the total volume of the stored liquid (or process liquid) 2.18
solid content of solidconleantorfiltruteThe mass of solids in a unit volume of the filter. 2. 19
partielesixedistrihitinn
degree distribution
the proportion of particles of different diameters in the total particles. According to the processing of analytical data, there are frequency distribution, pseudo-distribution, etc. 2.23
feeding timefredingtnke
the time required for the material to be added to the machine
washing time
washing time
the time spent on washing and filtering.
drying time tine
also the time required for a cake:
feeding time
the time required to unload a full batch (minus the time required to check) from the machine. 2.24
cyclic cycle time. Cycling time. The time taken for a cycle to break down.
dehydration, dehydration
the operation of removing the bulk part of the cake from the machine. 2.26
thickening.conceulmling
refers to the process of removing some liquid from the cake and increasing its concentration. 2.27
repnration efficiency GB/T 4774 —2004
If the recovery rate of the solid phase is used to express the total efficiency, the ratio of the total mass of the separated solid phase particles to the total mass of the solid phase particles entering the system is the total efficiency. For some separation equipment, there is a distinction between light efficiency and total efficiency. It can also be expressed by the recovery rate of the melt phase. 2.28
Newtonian flow New1oninuuid
Fluids are fluids whose shear stress and shear resistance obey the Newtonian viscosity law during fluid motion, such as gases, water and most pure liquids and pure Newtonian fluids.
Non-Newtonian fluids
Any fluid whose mechanical properties do not obey the Newtonian viscosity law is a non-Newtonian fluid. 2. 30
5 Potential tpntemlfial
The potential between the shear head and the separation medium exists in the described model. 2.31
male loculation
add people to protect the new quality of electricity compensation containing fine inspection in the best of the disadvantages of drops (small fine particles of the micro-coating of the policy into a large group of teaching decisions too chaotic. 2. 32
Founctionagent, floccant
It is also called flocculation agent in Chinese medicine. It mainly refers to polyelectrolyte. Its function is to bridge the floating particles in the liquid phase. Thus, the particles aggregate to form a large aggregate and accelerate the sedimentation rate. Synthetic agent and natural coagulant 2.33
Founctionagent
It is a suspension (sol) containing fine particles such as electrolytes (or mirrors) to reduce the particle load and make the small particles become floating particles. The process of
euagulatingagent
is a drug added to increase the apparent particle size and the speed of sedimentation. Light is electrolyte (inorganic compound), 2. 35
Porosity
In a granular filling bed, the ratio of the volume of pores in a porous material, the volume between particles and the total volume of the porous material, 3
GB/T 4774 —2004
The ratio of the g-forces to the acceleration of gravity, the ratio of the centrifugal settling velocity to the gravity velocity under laminar flow:
Compressible cake is a compressible filter cake under the action of gravity, the porosity changes, and the leakage resistance increases accordingly: 2. 38
Incompressible cake is a cake that cannot be compressed under pressure, and the specific resistance is independent of the pressure. 2. 59
Filtration aid filleraid
porosity, fine particles and incompressible substances, which are attached to the surface of the filter medium or are placed in the suspension to improve the filtration process. 2. 40
Time for screhrims The time required for the medium to be washed and regenerated. 2.41
Capacity t3roughpul
The volume or mass of the suspension (or milk) that the separator can separate in a single flow time. 2. 42
capacity in tenus af cakeur Tillrate production energy means the mass of filter cake (precipitate) or volume of concentrate (permeate) discharged from the filter per unit time. 2.43 Slurry is the liquid that is filtered or separated. Inlet pressure is the pressure of the material at the inlet. Feed concentration is the concentration of the feed material. Operating cycle is also called operation cycle. A filter or separator is a machine that repeats all the previous steps from one process to the next.
3 Centrifuge
3.T Classification of centrifuge
Centrifuge
A machine that utilizes the inertia of the machine and the rotation to achieve the maximum flotation, emulsion separation or concentration of other non-materials, 4
3. 1. 1. 1
Through the centrifugal station to achieve the centrifugal process.
3. 1. 1. 1. 1
Three-legged centrifuge thrc-enlumncentrifugeGB/T 4774 2004
The vertical centrifuge with multiple elastic components on the rotating parts and the machine is generally strong. 3. 1. 1. 1. 2
Lifting and unloading three-column centrifuge snsperdl bugdischargethree-columncentrifage refining cloth into a mouth shape, after stopping the machine, use the lifting device to discharge the three-column centrifuge with the filter bag. 3. 1. 1. 1. 3
Scraper bottom discharge three-column centrifuge peeldiachargethiee-coluuneentrifaw three-column centrifuge, pick the egg material from the month to the knife, the cake is discharged from the bottom of the drum, the system has manual, medium and hydraulic types.
3. 1. 1. 1. 4
top-suspeied centrifuge,swspended type nf hateh baskel eentrifug number of revolutions installed at the lower end of the main shaft, the filtering centrifuge with stirring at the upper end: 3. 1. 1. 1. 5
horizontal peelercentrifuge,horizouiul sapercentrifuge.peeler adopts the horizontal filtering centrifuge of example unloading. 3. 1, 1. 1. 5, 1
siphon scraper centrifuge rutarysiphonpeekercentrifuge, peelercentrifugrwithrotaryslphon scraper centrifuge with rotary suction device: 3. 1. t. 1. 6
poshercentrifuge The centrifuge with rotary drum structure can be divided into single-stage, double-stage and multi-short types. 3. 1, 1. 1. 6. 1
Column pusher centrifuge pusher centrifuge with cylindrical/cnnical baskels Centrifuge with chamber pusher: composed of rotor and auxiliary equipment 3. 1, 1. 1. 7
Centrifugal discharge centrifuge sllp-discharge screen rentrlfugescreen-bawlslidingcentrifug adopts conical rotor, using the inertia of the rotor and the axial force of the material on the rotor to complete the separation and discharge process.
3. 1. 1. 1. 8
Vibrating discharge centrifugeRilbratieg-dischargeBcreea centrifage.street-benelvibraling centrifngeUsing chain-shaped soft waves, using the inertial centrifugal blades and the action of the drum to complete the solid-liquid separation and discharge the solid storage centrifuge,3. 1. 1. 1. 9
Moving discharge centrifugelummhlingreatrifugescrren-bowitumblingcentrifgeUsing pin-shaped rotor, and the centrifugal force and action of the rotation to complete the liquid separation and discharge the solid pass centrifuge,3. 1. 1. 1. f0
Screw unloading centrifugeScreenbowl gcroling eentrifuge, srrnll dischurue screencentrifuge.wormzcreen rentrifuge
GB/T' 4774 —2004
Using fuel transfer centrifuge,
3. 1. 1. 1. 11
Inverting bag unloading centrifuge invertlngfilter centrifuge/evergihlerililerceutrifup is a centrifuge with a rotary wheel unloading after lowering. 3, 1, 1. 1. 12
Directed screw centrifuge directedMowScreenincentrifue centrifuge with controlled flow channel inside the rotor, controlling the flow through the centrifugal drum rotating at high speed for centrifugal re-filtering: 3. 1, 1. 1. 13
Wrticalecnifuge
Vertical centrifuge
Simple drum fixed on the main shaft for vertical centrifugal re-filtering, 3. 1. 1. 2
Sedimentation centrifuge sedimeatingcralrifug centrifugal sedimentation process before the need for medical machine..
soliJ-twlseullingccalrifuge, decanter pressure spiral feed sedimentation centrifuge
3. 1. 1. 2. 1. 1
counter-current spiral unloading sedimentation centrifuge
dlscharr centrifuge
counter-rurrcat dccanter, counter-current solik-bowl scroll shrimp benefit part of the sedimentation rate centrifuge, as the middle of the rotary effect, in the rotary drum small end direction also moves, while the swimming liquid to the transfer of large side can be said to move.
3. 1. 1. 2. 1. 2
Parallel flow sedimentation centrifuge
cir-cuiTenldecante:
In the first stage of the sedimentation centrifuge, the liquid is added to the big end of the drum, and in the process of separation, both the secretion liquid and the floating liquid flow toward the small end of the drum.
3. 1 1.2. 1.3
Interactive spiral discharge sedimentation centrifuge, a kind of high-speed centrifuge sedimentation centrifuge, a special baffle is installed at the junction of the conveyor and the sludge, and the concentrated sludge is pressed through the baffle to improve the dewatering efficiency.
3. 1. 1. 2. 1. 4
Magnetic spiral discharge sedimentation centrifuge magnetic decazler is a kind of sedimentation centrifuge, the rotating flow passes through the magnetic material, and the particles in the liquid can be quickly settled under the action of the magnetic field, and the separation efficiency is high.
3.1. 1.2.2
Three-legged sedimentation centrifuge single leg sedimentation centrifuge is a three-legged centrifuge with sedimentation efficiency. 3. 1. 1.2. 3
scraper unloading sedimentation centrifuge snlid-hnwpeercentrifuge is a centrifuge with a sedimentation ring and a rotary drum. 3. 1. 2
separator
vertical sedimentation centrifuge for very high emulsion or total suspended solids with little solid content, separation solid quantity 5300, 5
3. 1. 2. 1
tubular separatortuhular separatorcircular separatorvertical artificial high-speed sedimentation centrifuge with length-to-diameter ratio greater than or equal to 43.1.2.2
chamber separatormnltichaalersaparalorGD/T4774—2004
a separator in which a group of mesh rotary drums with different diameters are divided into two annular chambers connected in the middle, 3. 1. 2. 3
operated separatorliseseparalur
a separator with a group of media plates installed in the rotor. The discharge type is divided into manual screening curtain separator, ring valve discharge disc separator, end discharge disc separator and water flushing disc separator. 3. 1.3
Automatic knife discharge high speed sedimentation separator swF-unlaadinpbowl centrifuge, centrifagal separatorwithTkxiulesuspended restrainable hawl,powea fuge storage medical social transfer type automatic scraper discharge high continuous sedimentation centrifuge. 3. 1.4
Spiral discharge sedimentation centrifuge sulid/serrenbawlscrollingcentrlfuge adopts H spiral discharge. The centrifuge has a settling section and a filtering section (or a settling section and a filtering section in one section), 3. 1. 5
High speed centrifuge high-speed centrifuge high-speed centrifuge.
automatic batch centrlfuge
automatic centrifuge
can automatically complete all operations. 3. 1.7
continuous centrifuge
automatic centrifuge
a centrifuge that performs all operations in a continuous sequence! .
batch centrifuge
a centrifuge that performs all operations in a continuous sequence!
Closed centrifuge hermetir centrifuge is a kind of centrifuge which uses frequency conversion to isolate the process space inside the machine and the outside world. 3.2 Working process and characteristics
High-speed centrifugal separation is a process in which the liquid or liquid compound is subjected to sedimentation separation under the action of inertial centrifugal force. 3.2.2
Equivalent sedimentation area of ​​​​sedimentation
The sedimentation area of ​​a centrifuge is equivalent to that of a medium-force sedimentation centrifuge. It is the most important characteristic of the separation performance of the sedimentation centrifuge, which is called the theoretical production capacity.
Centrifugal dewatering, rentrifugal dewatering, removes water from the filter under the action of centrifugal force. Solid content solid canten1of clarified effinent unit solid content of solids contained in the liquid. 3.2.6
Solid-haldinyspaee
The space allowed to accommodate the sinking of the (sinking) material3. 2. 7
Ceniriroging time
The time required for centrirugioy material to be centrifuged. 3.2. 8
Screening time
Total flushing time
The time required for flushing the network3.2.9
Operating water
Pressure water for the whole network drainage and the control of the drainage. 3.2. 10
leadingsc.rnll
The absolute speed of the screw in the centrifuge is greater than the speed of the drum. 3.2. 11bZxz.net
The absolute speed of the screw in the centrifuge is less than the speed of the drum. 3.2.12
HeavyLiquid-LightLiquid Interface Radius radius ut heavyLiquid-light liquid interface is also called "neutral layer semi-light", which is the radius before the boundary between heavy liquid and light liquid in the drum when two liquids with different densities are separated by centrifugal separation. 3.2. 13
Differential speed
The difference between the feeding speed and the drum speed of the two screw unloading machines. 3.2.14
Circumferential speed of vasket/bowlThe total rotational speed of the vasket/bowl.
Azimuth angle of the howl
The coordinate system of the rotation axis and the revolution axis of the convex centrifugal machine drum. 3.2.16
Critical speedEritiknlrototlou speedThe speed at which the rotating shaft system produces a revolving axis. 3.2.17
Efficient capacity of the harsket/bowl. The effective spatial volume of the material structure in the harsket/bowl. 3.2.18
Maximum allowable charge
The maximum allowable mass of the material to be loaded into the harsket. 3.2.19
Perrealageofopenareaofdrumwallperrealageofopenareaofthe ...21
The disc half angle is the angle between the disc and the axis,
The aperture is the hole or diameter of the discharge nozzle of the separator: 3.2.23
The length-to-diameter ratio of the drum is the ratio of the effective length to the maximum inner diameter, 3.2.24
The number of pushes per minute of the rear plug pusher and the pusher change rate of the two-centre pusher 3.2.25
The distance between the piston and the centrifugal pusher is the quotient of the limit lock of the piston pusher. 3.3 Centrifuge structure
Single-sided bearings The two bearings of the upper shaft of a basket/bowl are located on the same supporting structure. 3. 3. 2
Bilateral bearings Bearings on both bleeds (the two bearings of the main shaft are located on the lower supporting structure of the bowl. 3. 3. 3
Overhead bearing
Vertical bearing structure The main shaft is located about 10 meters above the center of mass of the bowl. 3, 3. 4
Vertical axis
The main shaft is straight.
Horizontal horizontal 3.3.6
Top discharge
In vertical centrifuges, the centrifuge is discharged from the top of the centrifuge. GH/T 4774 2004
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