This standard specifies the terminology used in fluid conveyors. This standard applies to the types, main parameters, devices and components of fluid conveyors. GB/T 14521.8-1993 Transport Machinery Terminology Liquid Conveyors GB/T14521.8-1993 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Terms of conveying machinery-Fluid conveyor
Terms of conveying machinery-Fluid conveyor1 Subject content and scope of application
This standard specifies the terms used for fluid conveyors. This standard applies to the types, main parameters, devices and parts of fluid conveyors. 2 Reference standards
GB/T14521.1 Terms of conveying machinery Types of conveying machinery GB/T 14521.2 Main parameters of conveying machinery terms GB/T14521.3 Terms of conveying machinery Devices and parts 3 Types of fluid conveyors
3.1 Fluid conveyor [luid convcyor
A conveyor that transports materials (products) in a conveying pipe with the help of a fluid with a certain amount of energy. 3.2 Pneumatic conveyor pneumaticconveyor A conveyor that transports materials in a conveying pipe with the help of a gas with a certain amount of energy. 3.3 Vacuum type pneumatic conveyor vacuum type pneumatic conveyor A pneumatic conveyor in which the pressure in the conveying pipe is lower than the external atmospheric pressure. 3.4 Pressure type pneumatic conveyor Pressure type pneumatic conveyor A pneumatic conveyor in which the pressure in the conveying pipe is higher than the outside atmospheric pressure. 3.5 Pneumatic conveyor in combination with vacuum pressure A pneumatic conveyor composed of two types: suction type and pressure type. 3.6 Static pressure pneumatic conveyor A pneumatic conveyor in which the material is pushed and transported by the static pressure difference of the gas. 3.7 Pulse pneumatic conveyor GB/T 14521.8—93 A pneumatic conveyor that uses a pulse generator to form a plug in the conveying pipe and transports the material under the action of static pressure difference. 3.8 Plug type with side air pipe Pntumatic cunveyor A pneumatic conveyor in which the material in the conveying pipe is cut by the compressed air from the bypass pipe to form a plug and is transported. 3.9 Capsule pipeline conveyor Capsule pipeline conveyor A pneumatic conveyor that uses the pressure difference of compressed air to push the container forward. 3.10 Pneumatic elevator A conveyor that uses airflow to lift materials. Hydraulic conveyor Hydraulic conveyor
A conveyor that uses liquid with a certain amount of energy to transport materials (products). Approved by the State Administration of Technical Supervision on June 10, 1993, and implemented on March 1, 1994
GB/T 14521.8—93
3.12 Capsule hydraulic pipe'conveyor A conveyor that uses the pressure of a certain amount of liquid to push the container forward along the pipeline. Pneumatic conveying chute
In a closed shell, a slightly downward-inclined perforated trough plate is installed. The material is fluidized by the blown air and then slides down by its own weight.
4 Main parameters
4.1 Performance parameters
4. 1.1 Capacity
The mass of the material (or article) conveyed per unit time (hour). 4.1.2 Mixing ratio
The ratio of the mass of the material conveyed to the mass of the fluid in the same time. 4. 1. 3 Suspension speed The airflow speed that makes the material particles suspended and static. 4.1.4 Conveying air speed, air speedwwW.bzxz.Net
The airflow speed when the material is not blocked in the conveying pipe. 4. 1. 5 Calculation of air volume theoretical volume [law rate of air Effective air volume excluding the leakage of the device. 4.1.6Power consumption per unit.Power consumed per unit.Power consumed per unit of delivery per unit of delivery per unit of distance.Airspeed inside pipe of suction nozzleAirspeed inside pipe of suction nozzle4. 1.7
Air speed inside the pipe of suction nozzle.
4.1.8Resistance coefficientResistance coefficientThe coefficient that considers the energy loss of fluid in the delivery pipe. 4.1.8.1Sctional resistance coefficient in fluwingThe coefficient that considers the cross-sectional change and the equal resistance at the elbow in the delivery pipe.Resistance coefficient along the flow4. 1. 8. 2
The coefficient that considers the resistance along the delivery pipe.
4.1.9Two-phase flowTwo-phase flow
Mixed fluid of fluid and material.
4.1.10Flowrate through separatorFlowrate through separatorThe air flow through the separator.
4.1.11 Linear speed in rotating of matcrials The tangential velocity of the material particles when they rotate in the separator. 4.1.12 Filteration area The total flow area of ​​the filter.
Filtered air flow
Total air flow through the filter.
Volume ratio of mixture (slurry) 4.1.14
The volume of two-phase flow flowing per unit time. 4.1.15 Density of two-phase flow density nftwo-phase flow The ratio of the mass to the volume of two-phase flow.
4.1.16 Viscosity of two-phase flow GB/T 14521.8—93
The inherent property of two-phase flow to resist shear deformation. 4. 1. 17
Conccntration by mass The mass percentage of the material contained in the two-phase flow. 4.1.18
settling flow velocityThe ending velocity of a material particle sinking in a stationary liquid. 4.1.19 critical flow velocitycritical flow velocityThe flow velocity at which material particles begin to settle at the bottom of a conveying pipe. 4.1.20 fluid powerfluid power
The product of pressure and flow rate of a two-phase flow.
4.2 Dimensions
Inner diameter of transport pipeinner diameter of suction nozzleinner diameter of outpipeforsustionnozzle4.2.3
Inner diameter of the outer tube of the nozzle4.2.4
Inner wall radial dimension of the separator.
curvature radius of bend tubecurvalure radius of bend tubeThe radius of the central axis of the tube when the tube is bent into an arc shape.width of slider
width of the slider
height of the slider
height of the bottle.
5 Devices and parts
transport pipe
transport pipe for conveying materials in a fluid conveyor.
suction nozzle
device for sucking materials in a pneumatic conveyor.single cylinder suction nozzle5.2.1
A nozzle with a straw.
Double-barrel suction nozzledouhlecylindersuction nozzle5.2.2
A nozzle composed of an inner and outer round tube.
Rotary suction nozzlerotarysuctionnozzle5.2.3
A nozzle equipped with a rotating loosening force.
5.3Feeder
A device for feeding fluid conveyors.
5.3.1Rotary feederrotaryfeederA feeder composed of a rotating impeller in a casing.Squirtfeeder
A feeder with a nozzle.
Screw feederscrewfeedler
A screw feeder with a variable pitch.
GB/T 14521.8—93
5.3.4 Volumetric feeder A closed intermittent feeder:
5.4 Separator A device that separates materials from fluids in a two-phase flow. 5.4.1 Volumetric separator A separator that uses the sudden increase in the effective cross-section of the container to reduce the airflow velocity and allows the material to settle from the two-phase flow by its own weight. 5.4.2 Cyclone separator A device that uses the centrifugal force of the rotating two-phase flow to separate materials from fluids. 5.4.3 Inertial separator A device that uses the sudden change in direction of the two-phase flow to separate materials due to the inertial force. 5.5 Discharger A device that discharges materials from the separator and prevents external air from entering the separator. 5.5.1 Rotary vaned is a device with a rotating impeller inside and outside the simple shape. 5.5.2 Valve discharger is a device with double valves that are opened and closed alternately to discharge the material. 5.6 Air pipe
An exhaust pipe connecting the separator, dust collector, fan and the atmosphere. Air concentrated pipe5.7
It has a gradually contracting flared pipe to reduce the local pressure loss caused by the sudden contraction of the air flow at the air inlet. 5.8
Trough
Conveyor component carrying materials.
5.9 Chamber
A passage for ventilation at the bottom of the trough.
5. 10 Orifice plate
A plate with small holes between the conveyor trough and the ventilation trough. 5.11 Air cutting device
A device that can generate pulsed airflow to cut the material into plugs. 5.12 Side air pipe
An air pipe installed beside the conveying pipe for cutting materials. 5.13 Mixing tank
A device for mixing liquid and material.
5.14 Water supply pipe
A pipe for water to enter the mixer,
5.15 Return water pipe
A pipe for water to return after separation from the material.
5.16 Return water tankA device for storing return water.
5.17 Thickening deviceA device for making the two-phase flow reach a specified mass concentration. 5.18 Dewatering device GB/T 14521.8-93
Equipment for separating water from materials or reducing the water content of materials This standard is proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of Beijing Hoisting and Conveying Machinery Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by Beijing Hoisting and Conveying Machinery Research Institute of the Ministry of Machinery and Electronics Industry and Dayuan Heavy Machinery Institute. The main drafters of this standard are Ji Xinpei, Ji Xinpei, and Ji Xinpei.
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