This standard specifies the structural type, basic parameters, requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements for vibrating fluidized bed dryers. This standard applies to horizontal vibrating fluidized bed dryers driven by vibration motors (hereinafter referred to as dryers). JB/T 5279-1998 Vibrating fluidized bed dryer JB/T5279-1998 Standard download and decompression password: www.bzxz.net

ICS71.120.30
J78
JB
Machinery Industry Standard of the People's Republic of China
JB/T5279-1998
Vibrating fluidized bed dryer||tt ||Vibrationfluidized-beddryer
Released on 1998-03-19
Ministry of Machinery Industry of the People's Republic of China
Released
Implemented on 1998-07-01
JB /T5279-1998 | | tt | -91 Revision of General Technical Conditions for Vibrating Fluidized Bed Dryer. According to the needs of market economy development, product classifications have been added to the content of the standard and product varieties have been clearly divided. This standard will replace JB/T5279.1-91 and JB/T5279.2-91 from the date of implementation. Appendix A and Appendix B of this standard are appendices of the standard. This standard was proposed and coordinated by the Drying Equipment Standardization Technical Committee of the Ministry of Machinery and Quilt Industry. This standard was drafted by Liaoning Tieling Drying Technology Research Institute. The main drafters of this standard: Zhang Yujie, Zhao Jian, Zhang Haitao, Liu Lina, Liu Guoquan, and Fuzhonglin. Scope
People's Republic of China Machinery Industry Standard
Vibration fluidized-bed dryer
Vibration fluidized-bed dryerJB/T52791998
Police Agent JB/T5279.191|| tt||JB/T 5279.291
This standard specifies the structural type, basic parameters, requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements of vibrating fluidized bed dry media machines.
This standard applies to horizontal vibrating fluidized bed dryers driven by excitation motors (hereinafter referred to as dryers), 2 cited standards
The provisions contained in the following standards are adopted in this standard References in rain constitute provisions of this standard. When this standard is published, the editions indicated are valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest edition of the following standards. GBI91-90
GB 376883
GB6388-92
GB/T 1330691
JB533091
JB/T 69241998
SJ2573-85
3 terms
Packaging, storage and transportation pictorial mark
Determination of sound power level of noise source - simple method Transportation, packaging, receipt and delivery mark
Signage
Vibration source three-phase asynchronous motor technical conditions and drying equipment product model compilation method
General technical conditions for paint coating
This standard adopts the following definitions.
Drying intensity (symbol A) refers to the weight of moisture removed by the dryer per unit time and unit fluidized area for specific materials under given working conditions. Unit: kg/(m·h)
4 Product Category
4.1 Structure
4.1.1 The dryer is horizontal, and its structural type can be divided into: upper cover body reference There are two types: the upper cover body does not vibrate. 4.1.2 The coal dryer is mainly composed of a box body, an upper cover, a gas distribution plate, an excitation motor, a vibration isolation spring and a base. 4.2 Model representation method
According to the provisions of JB/T6924,||tt| |4.3 Basic parameters
The basic parameters of the dryer should comply with the requirements in Table 1. Approved by the Ministry of Machinery Industry on 1998-03-19
Implemented on 1998-07-01
1
Sequence
No.
1
2
3
4
5
6
7
8
9
10|| tt||Basic specifications
(main parameters)
3×30
3×45
6×45
6×60||tt| |9×60
9×75
12×75
15×75
18×80
20×90
5 Requirements
Gas distribution plate
foot
4
(width×length)
mm
300×3000
300×4500
600×4500
600×6000
900X6000
900X7500
1200×7500
1500×7500||tt ||1800X8000
2600X9000
JB/T 5279—1998
Table 1 basic parameters
fluidized area
m
0. 90
1.35
2.70
3. 60
5. 40
6. 75
9.00
11.25| |tt||14. 40bzxZ.net
18. 00.
amplitude
(double amplitude)
mm
03.2
sound| |tt||Noise
L
dB(A)
80
85
S90
Dry
Dry
Unevenness
%
≤1.00
≤1.40
≤1.70
≤1.90
≤2.20
Drying strength
kg/(m* . h)
40
5.1 The dryer should comply with the requirements of this standard and follow the drawings and drawings approved by the prescribed procedures. Technical documentation production. 5.2 Requirements for environmental conditions
a) The ambient temperature is not higher than 40℃ and not lower than -25℃ to trigger the motor
power
kw
1.5|| tt||2. 2
4. 4
7.4
11
b) When the altitude of the usage area is lower than 1000m, the surface temperature of the excitation motor Not higher than 65C. When the altitude of the use area is 1000~4000m, the surface temperature rise of the excitation motor should be reduced by 0.5℃ for every 100m of increase in height. 5.3 Structural requirements
a) Make the gas evenly distributed in the distribution plate; b) Facilitate the installation of impregnation materials:
e) Have the conditions for observation and installation of testing instruments: d) Excite the motor performance and The installation dimensions should comply with the requirements of JB5330. 5.4 Appearance quality
5.4.1 Coating appearance quality should comply with the Level 1 coating appearance quality requirements in 1.3.1 of SJ2573-85. 5.4.2 Observation window clips should be arranged neatly and symmetrically. 5.4.3: The edges of the gaskets everywhere should be neat. 5.5 No-load technical performance
5.5.1 The reporting amplitude should comply with the provisions in Table 1. 5.5.2 The amplitude of the discharge end shall not be greater than the amplitude of the inlet end. 5.5.3 The vibration frequency deviation is ±0.3Hz.
5.5.4 When the dryer is located in a geographical location where the altitude is less than 1000m and the ambient temperature is not higher than 40℃, run without load for 4 hours and excite the motor. The surface temperature rise shall not exceed 40℃.
5.5.5 The no-load operating noise limit of the dryer host when the amplitude is not less than 2.8mm: 80dB (A) when the gas fluidization area is less than or equal to 3m*; 85dB when it is less than or equal to 7m* (A): 90dB(A) when greater than 7m*. 5.6 Technical performance
2
JB/T5279-1998
5.6.1 When using quartz sand with a particle size of 1.6~3.5mm and a moisture content of 5%~7% When conducting drying performance tests according to the working conditions specified in Appendix A (standard appendix), the drying strength should comply with the requirements in Table 1. 5.6.2 During the drying process of materials, when the humidity drop is not greater than 10%, the degree of uneven drying should comply with the requirements in Table 1. 5.6.3 The dryer should be able to meet the drying requirements of other materials within the applicable scope. 5.7 Reliability
Under the condition that the user abides by the rules for the storage and use of the dryer, the normal working time of the dryer should be no less than 10000h. 6 Test Methods
6.1 Coating appearance quality shall be in accordance with SJ2573- 2.4.2, 2.5 and 2 in 85.Inspection shall be carried out according to the provisions of 6, and the results shall comply with the provisions of 5.4.1. 6.2 The amplitude is measured on the box flanges at both ends of the dryer with a vibration measuring instrument with a measurement error not exceeding ±0.01mm. The arithmetic average is taken. The result should comply with the provisions of 5.5.1.
6.3 The vibration frequency of the dry coal machine shall be measured with a tachometer with an accuracy of ±1min-\, and the frequency difference shall be calculated according to the following formula. The result shall comply with the provisions of 5.5.3.
4/=\二n
60
In the formula: 4f---regularity difference.Hz:
n--the actual measured value of the excitation motor speed, min~1;n. ——-Excitation motor speed calibration value, min-! 6.4 The surface temperature rise of the excitation motor is measured with a thermometer with an allowable error not exceeding ±1C. The result should comply with the provisions of 5.5.4. 6.5 The noise of the dryer is measured with a sound level meter, that is, the midpoint around the prototype is 1m away from the equipment surface and 1.5m away from the ground. The noise at no less than four points is measured and the average value is taken. The background noise shall be processed according to the requirements of 5.6 in GB3768-83, and the results shall comply with the provisions of 5.5.5. 6.6 The coal-to-coal strength of the coal-to-coal machine shall be tested in accordance with the provisions of Appendix A and the results shall comply with the provisions of 5.6.1. 6.7 The drying unevenness during the drying process of the material shall be tested in accordance with the provisions of Appendix B (the difficult appendix), and the results shall comply with According to the provisions of 5.6.2, the
6.8 dryer shall meet the dry explosion requirements of other materials within the applicable scope. The dry explosion machine shall be inspected on-site according to the process conditions and requirements of the material drying operation in actual production. The extent to which the user's drying effect requirements for the material are met (can be assessed according to a technical agreement or contract). 6.9 The dryer reliability test shall be conducted by the manufacturer through the test laboratory or at a test point established by the user, and a report shall be submitted. The results shall comply with the provisions of 5.7.
7 Inspection Rules
7.1 The coal dryer must pass the inspection by the product quality inspection department of the manufacturer and be accompanied by a product quality certificate before it can leave the factory. 7.2 The inspection of the dryer is divided into factory inspection and type inspection. 7.2.1 Factory inspection
7.2.1.1 Each dryer must undergo factory inspection, that is, a no-load operation test lasting not less than 2 hours, and 5.4, 5.5.1, 5.5.2.5.5.3, Inspection shall be carried out in accordance with the provisions of 5.5.4 and 5.5.5. If any of the factory inspection items in 7.2.1.2 fails, the product will be deemed unqualified. 7.2.1.3 When a product must be assembled on-site due to objective reasons, the factory inspection items can be carried out at the installation and debugging production site, and can be based on the on-site debugging report provided by the debugging personnel of the shipping factory or the user unit and confirmed by the product quality inspection department of the manufacturing unit. Delivery basis. 7.2.2 Type inspection
7.2.2.1 Type inspection shall be carried out when one of the following situations occurs: a) When the product is trial-produced or transferred to a factory for production: b) When the product is re-produced after 2 years of discontinuation,
c) Every 100 units produced during normal production (referring to the same specifications); 3
JB/T52791998
d) When there are major changes in the structure, materials and processes of the product: e) National quality supervision agency When requesting type testing. 7.2.2.2 In addition to the factory inspection, type inspection shall also conduct inspection according to the requirements of 5.6.1 and 5.6.2. 7.2.2.3 When the requirements of 5.6.1 cannot be inspected due to objective reasons, the inspection of 5.6.3 can be used instead. 7.2.2.4 One prototype for type inspection is randomly selected from the finished product warehouse of the manufacturer. When inspecting 5.6.3, materials and prototypes can be selected at any time through consultation with relevant personnel.
7.2.2.5. During type inspection, if any one of the requirements in 5.5.4, 5.5.5 and 5.6.2 is unqualified, the sampling shall be doubled to re-inspect the item. If one item is still unqualified, it shall not be acceptance.
8 Logo, packaging, transportation and storage
8.1 Logo
8.1.1 Product logo
Each product should have a product label, its form and size fixed in a conspicuous place and technical requirements should comply with the provisions of GB/T13306. The content includes:
a) manufacturer name and address;
b) product name;
c) trademark;
d) product model: ||tt| |e) Manufacturing date;
f) Product factory number, production batch number:
g) Product main parameters,
8.1.2 Packaging mark
In-product packaging materials There should be signs on the outer surface such as receipt and delivery, packaging and storage and transportation illustrations. The packaging signs should comply with the regulations of GB6388 and GB191.
8.2 Packaging
8.2.1 The product should be packed in a box, the product should be fixed reliably in the box, and the packaging box should be rainproof. 8.2.2 The documents accompanying the product should include:
a) Product certificate:
b) Product instruction manual (including product installation drawings);) Packing list (including random spare parts and tool list). 8.3 Transportation
There should be a canopy or other rain-proof measures during transportation. 8.4 Busy storage
8.4.1 The storage site should be flat.
8.4.2 Covers or other rain-proof measures should be taken when stored in the open air. 8.4.3
Maintenance should be carried out once the storage time exceeds 18 months. A1 test instrument
JB /T5279-1998 | ℃, the amplitude is measured with a vibration measuring instrument with an error not exceeding ±0.01mm, and the temperature is measured with a thermometer with an error not exceeding ±1C. A2 test turbulence
A2.1 material uses quartz sand with a particle size of 1.6~3.5mm and an original moisture content of 5%~7%. The amount of wet material input into the A2.2 test should ensure that the material can completely cover the gas distribution twice board, and not less than 100kg. A2.3 The working conditions of the dryer should meet the following requirements: a) The amplitude of the dryer should be 2.8mm;
b) The highest hot air temperature below the drying gas distribution plate of the dryer is 120°C ± 2°C. The temperature difference is not greater than 10°C; c) The room temperature before starting is not higher than 35°C, and the ambient temperature at the air inlet is not lower than -25°C. A3 test method
Start feeding when the dryer reaches the working state specified in A2.3. From the discharge port, the first sampling is carried out after the material runs on the gas distribution plate for a cycle. , every 20 thereafter. Take a sample once and take it three times in total. The sample should be taken out from the lower, middle and upper positions of the material receiving device, and the arithmetic mean of the moisture content of the three samples should be calculated. Calculation of A4 drying strength
Thousand-drying strength is calculated according to formula (A1):
m(W,-W,)
A-
tS(1-W ) | |tt | |tt||W The moisture content of the material before drying (wet basis), %: the average moisture content of the material after drying (wet basis), %: W,
S
Dryer fluidization area, m*.
(A1)
5
B1 terminology
JB/T5279—1998
Appendix B
(standard appendix)|| tt||Test method for drying unevenness
Drying unevenness: the uniformity of the moisture content of the material on the same cross-sectional area of ??the dryer gas distribution plate during the drying process.
B2 test instrument
The moisture content of the material is measured in an oven, and its temperature is not greater than 105C. B3 test conditions
B3.1 The test should be conducted under normal operation and working conditions of the dryer. B3.2 The test materials should be fully stirred before being put into the test to ensure that the materials are evenly mixed before the test. B4 test method
B4.1 Sampling
B4.1.1 Sampling time
should start from the discharge port and take samples after the material runs on the gas distribution plate for one cycle. B4.1.2 Sampling position
is specified in the lateral direction of the gas distribution plate corresponding to the middle of the observation density near the outlet of the dryer, starting from 10mm close to both sides of the dryer box, and taking 40mm inward materials. B4.1.3 Sampling method
When the dryer is in working condition, extend the sampling tool horizontally from the upper part of the observation window into the dryer box and then lower it in the vertical direction, so that the material intake port falls on the gas distribution plate and is in contact with the material. The conveying direction is to pick up materials in the reverse direction, and lift the sampling tool vertically after sampling. B4.2 Calculation of drying unevenness of materials
The difference between the moisture content values ??of the two samples taken out of the material is the value of the drying unevenness, which is a percentage.2 Calculation of drying unevenness of materials
The difference between the moisture content values ??of the two samples taken out of the material is the value of the drying unevenness, which is a percentage.
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