This standard specifies the type and parameters, technical requirements, inspection rules, Jilin Provincial Annals, packaging, transportation and storage of fluidized bed tea drying machines. This standard applies to drying machines. JB/T 5678-1991 Technical conditions for fluidized bed tea drying machines JB/T5678-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T5678-91
Fluidized bed tea drying machine
Technical conditions
Published on September 13, 1991
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Implemented on July 1, 1992
Mechanical Industry Standard of the People's Republic of China
Fluidized bed tea drying machine
Technical conditions
1 Subject content and scope of application
JB/T5678-91
This standard specifies the type and parameters, technical requirements, inspection rules, marking, packaging, transportation and storage of fluidized bed tea drying machine (hereinafter referred to as drying machine).
This standard applies to drying machine.
2 Reference standards
GB1184
GB1800
GB1804
GB2828
JB2854
JB/T5679
Form and position tolerances Provisions for tolerances not specified Tolerances and fits General introduction to standard tolerances and basic deviations Tolerances and fits Limit deviations of dimensions not specified for tolerances Batch-by-batch inspection Sampling procedures and sampling tables by counting (applicable to continuous batches) Inspection) Product label
Machining allowance, dimensional tolerance and weight deviation of cast iron parts Fluidized bed tea dryer test method
Product numbering rules for agricultural machinery
6CH series tea dryer
Main components
Painting of agricultural machinery
Type and basic parameters
3.1 Type
Drying equipment that relies on hot air with a certain flow rate to fluidize the tea leaves to complete water loss. According to the structure, it is divided into vibrating fluidized bed and fixed fluidized bed; it has heating conveyor belt and non-heating conveyor belt and other types. 3.2 Model indication method
The product model marking method of the dryer shall comply with the provisions of NJ89: 6CHC-XXX
Main parameters, expressed by the effective drying area of ​​the fluidized bed, m*×100 characteristic code, the category code is represented by the first letter "C" of the Chinese pinyin of the word "bed" in fluidized bed, drying machinery
Tea processing machinery code
3.3 Marking example
The model of the dryer with an effective drying area of ​​1.75m2 of the fluidized bed is: 6CHC-175. 3.4 Basic parameters
The basic parameters of the dryer shall comply with the provisions of Table 1. Approved by the Ministry of Machinery and Electronics Industry on September 13, 1991 and implemented on July 1, 1992
4 Technical requirements
General requirements
Effective drying area
Fluidized bed
Heating conveyor belt
Fluidized bed opening rate
Vibration mechanism
Motor power
JB/T5678-91
Unit of measurement
m*x100
6CHC-100
6CHC-175
≥400
680013000
750~1200
4.1.1 Dryers shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved through the prescribed procedures. 4.1.2 The purchased parts should meet the current relevant standards and have product certificates. 6CHC-250
≥540
8500~16000
1200~1800
4.1.3 The dryer should meet the safety requirements. The transmission parts that affect safety should have protective devices; parts that are easy to loose should have reliable anti-loosening measures.
The materials of the parts that are in direct contact with the tea leaves shall not affect the quality of the tea leaves; the transmission box, transmission chain, etc. shall not contaminate the tea leaves. 4.1.4
The non-processed surfaces of castings and forgings shall not have defects such as cracks, pores, sand holes, cold shuts, etc. that affect the strength and appearance quality. The accuracy level of casting tolerances and processing allowances shall not be lower than Grade 9 specified in JB2854. The welds of welded parts should be firm and uniform, and there shall be no defects such as false welding, leaking welding, desoldering, and burns: the bite joints of sheet metal parts should be flat and firm. The machined surface of the parts shall be free of burrs, rust and other mechanical damage. The dimensional tolerances of the holes and shafts that match the rolling bearings shall comply with the IT7 and IT6 precision specified in GB1800; the dimensional tolerances of the holes and shafts that match the sliding bearings shall comply with the IT8 precision specified in GB1800. 4.1.10
The tolerances not indicated in the drawings shall be in accordance with the following provisions:
The dimensional tolerances of the machined parts not indicated with tolerances shall comply with the IT14 level specified in GB1804; the shape and position tolerances of the machined parts not indicated with tolerances shall comply with the C level specified in GB1184; the dimensional tolerances of the sheet metal parts not indicated with tolerances shall comply with the IT16 level specified in GB1804. The appearance of the drying machine shall be smooth, flat and free of stains, and the quality of the paint on the exterior decorative surface shall comply with the 4.1.11
quality index of "TQ-1-NP" specified in NJ/Z3.
4.2 Machine performance
4.2.1 When using third-grade fresh leaves as raw materials, the moisture content of the leaves before drying is 58% to 62%, and the moisture content of the dry raw tea is not more than 6%, the main performance indicators of the dryer shall comply with the requirements of Table 2.
Tea output per hour
Drying intensity
Heat consumption
Coal consumption rate
KWh output
Tea quality
Measurement unit
kg water/(m2·h)
10\kJ/kg water
kg coal/kg tea
kg/(kw·h)
6CHC-100
6CHC-175
Meet the quality requirements of dry raw tea
6CHC-250
JB/T5678—91
Note, the coal in the coal consumption rate of \kg coal/kg tea is calculated based on the standard coal with a low calorific value of 2.93×10°k". 4.2.2 The temperature rise of the bearing part shall not exceed 25℃. 4.2.3 The working time of the dryer before the first failure is not less than 100h. 4.2.4 The reliability of the dryer is not less than 96%. 4.2.5 The noise of the dryer shall not be greater than 85dB (A). 4.3 Technical requirements for main components
The drying plate, chain, hexagonal wheel or gear of the heating conveyor belt shall refer to the provisions of NJ331. 4.3.11
The driving shaft, connecting rod and eccentric shaft of the vibrating fluidized bed shall comply with the provisions of Table 3. Table 3
Parts name and schematic diagram
Driving shaft
Eccentric shaft
Shaft diameter di, d. Dimension tolerance
Shaft diameter ds, d, Dimension tolerance
d, axis relative to d, axis
Coaxiality tolerance 1:
Aperture D Dimension tolerance
Screw hole D. Axis relative to D
Axis verticality tolerance
Shaft diameter did, dimension tolerance
Shaft diameter deds dimension tolerance
Shaft diameter d; dimension tolerance
Shaft diameter d. Dimension tolerance
d. Axis relative to d, axis
Coaxiality tolerance t;
d: Axis relative to d, axis
Parallelism tolerance t:
4.3.3 The hole shape of the porous plate should be uniform, and the plate surface should be flat, smooth, and without obvious warping. 4.4 Assembly quality
4.4.1 All parts must be inspected and qualified before assembly. 4.4.2 The porous plate assembly must be flat and there must be no overlap. 4.4.3 The air chamber, porous plate, and dry coal box should be sealed and there must be no air leakage. After assembly, the machine should run smoothly and reliably without abnormal noise or impact. 4.4.4
Tolerance grade/standard code
IT7/GB1800
9 grade/GB1184
IT7/GB1800
9 grade/GB1184
IT7/GB1800
IT9/GB1800
IT6/GB1800
9 grade/GB1184
5 Inspection rules
JB/T5678-91
5.1 Each dryer should be idle for 0.5h before leaving the factory and meet the following requirements: a.
Start normally, run smoothly, and have no abnormal noise; b. Fasteners must not be loose.
5.2 Each dryer must be inspected and qualified by the quality inspection department of the manufacturer, and the "Product Certificate" must be issued before it can leave the factory. 5.3 When the ordering unit conducts random inspections of product quality according to this standard, it should be carried out in accordance with the provisions of GB2828. The random inspection batch and qualified quality level AQL value shall be agreed upon by the supply and demand parties.
5.4 If the user complies with the usage and storage conditions specified in the "Product Instructions", within 12 months from the date of delivery, if the product is damaged or cannot be used normally due to poor manufacturing quality, the manufacturer shall repair, replace or return the product to the user free of charge. 6 Marking, packaging, transportation and storage
6.1 Each dryer shall be fixed with a nameplate in a conspicuous position. The nameplate specifications shall comply with the provisions of JB8 and its contents shall be: a.
Product name and model;
Main technical parameters;bzxz.net
Factory number;
Factory date;
Manufacturer name.
Product packaging shall be firm and reliable, and shall be rainproof and dustproof to ensure that the product is intact. 6-2
6.3 The words on the outer wall of the packing box should be clear and distinct, and the contents are as follows; a.
Product name and model;
Manufacturer name:
Packing box dimensions: length × width × height, mm
Net weight, gross weight, kg;
Delivery address and name of the consignee;
Lifting line position, words and signs such as "handle with care" and "do not invert". 6.4 The product should be securely fixed to the vehicle during transportation and comply with the regulations of the relevant departments to ensure that the product is not damaged. 6.5
Each product should be accompanied by the following technical documents: a.
Packing list;
Product certificate;
Product instruction manual;
User opinion letter.
6.6Each product should be accompanied by the accessories and attachments specified in the "Product Instructions" when leaving the factory. 6.7
Dryers should be stored in dry and ventilated places. Sunshade and rain protection measures should be taken when they are stored outdoors. Additional remarks:
This standard is proposed and managed by the Chinese Academy of Agricultural Mechanization Sciences of the Ministry of Machinery and Electronics Industry. This standard is drafted by the Chinese Academy of Agricultural Mechanization Sciences. The main drafters of this standard are Liu Jinrong and Huang Weiping. 4
Chinese People's
Mechanical Industry Standard
Fluidized Bed Tea Dryer
Technical Article
JB/T5678-91
Published and distributed by the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry (Box 8144, Beijing
Postal Code 100081)
Copyright reserved
Reproduction prohibited
Printed by Printing Factory, Qinghe County, Hebei Province
Format 880×1230
First edition in December 1991
Sheet 1/2
Word count 8000
First printing in December 1991
Print number 00.001-500
Price 1.00 yuan
No. 0476
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