Some standard content:
ICS 71. 120.30
Standard of the Machinery Industry of the People's Republic of China
3B/T8714—1998
Centrifugal Spray Dryer
Rotary Spray Dryer's
199803-19 Issued
Ministry of Machinery Industry of the People's Republic of China
1998-07-01 Implementation
B/T8714—1998
Appendix A of the Machinery Industry Standard is the appendix of the proposal.
This standard is proposed and submitted by the Ministry of Machinery Industry on the date of the change of equipment standardization technical committee. The drafting units of the standard are: Forestry and Drying Technology Research Institute, Institute of Forest Products Chemical Industry, Chinese Academy of Forestry. The main drafters of this standard are Gong Zongying, Tongcaiqun, Cheng Jinxin, Kuorong, and Huang Jingxin. Scope
Machinery Industry Standard of the People's Republic of China
Centrifugal Spray Dryer
Rotary Spray Dryer's
IB/T87141998
This standard defines the construction type, basic parameters, requirements, test methods, operation rules, loading, transportation and storage of centrifugal or spray dryers (hereinafter referred to as dryers). This standard is applicable to spray dryers with special atomizing materials. This standard does not include spray dryers containing organic media. 2 Referenced Standards
The following standards contain provisions that constitute the text of this standard through reference in this standard. At the time of publication, the versions shown are valid. All standards are subject to revision. When using this standard, the parties concerned should use the most appropriate version of the following standards. 15019401986
GT 191-90
GB376831
GR 5388-93
GB/T 133C6 --31
JH289::81
S257385
3 Structural type and basic data
3.1 Structure
Rail mechanical vibration rigidity rotor dynamic balance quality
Packaging performance graphic mark
Simplified method for determining peak sound and noise power level
Delivery packaging and receiving goods mark
Technical conditions for steel short-circuit positive container
General technical conditions for coating and removal
The dryer mainly consists of a centrifugal equalizer and a dry combustion tower, 3 2 Model and code
3.2.11 No. 4
Improved design code of the probe, in order A heliocentric · indicates the number of working belts, expressed by the evaporation rate of the water per hour (kg/h) for 351 leaves
Centrifugal code
Spray drying code
Professional code for industrial improvement
Approved by the Ministry of Machinery Industry on March 19, 1998
Implemented in 1998 (01|| 3.2.2 Atomizer code
JB/T8714—1998
Atomizer code
: GP1.15: indicates air inlet temperature of 350℃, centrifugal or spraying capacity of 150℃/h; 1R5C indicates high-pressure atomizer with spraying capacity of 50k℃/h. 3. 3 Basic parameters The recommended data should comply with the requirements of Table 1. The required parameters are as follows: Pl.tsuy 1.5X2.252.D Note: The drying capacity is the hourly release of the water jet when the air enters the water at 3 o'clock. 4 Requirements GPL2uU 3.0 × 2.6 The machine should comply with the requirements of this specification and be manufactured according to the drawings and specifications of the specified procedures. 4.2 The quality of the weld caused by the welding mechanism shall meet the relevant provisions of B228U GrLSof
4. The welding process shall be uniform, and the weld shall not have cracks, cracks, weld penetration, needle-shaped pores, etc. The material quality requirements of the coating shall meet the requirements of 1.2.1 of 2575-1. 4.4
4.5 The roughness R of the inner and outer surfaces of the machine and the material shall not be less than 150) 14U: 108% of the G2.5 level in Table 1: see Appendix A (for details). 4.6
The semi-balanced quality requirements of the dryer recycler shall not be greater than C4nL. The auxiliary rate of the housing and the runner of the dryer system shall not be higher than: 2m The noise level of the dryer under the condition of running alone and under the condition of vortex spraying should meet the requirements of Table 2. The noise level of the atomizer when operating alone should meet the requirements of Table 2. The noise level of the atomizer when operating alone should meet the requirements of Table 1. 4.10 The noise level of the dryer under the condition of running should meet the requirements of Table 1. 2
JE/T8714—1998
4.11 The noise level of the dryer under the condition of running alone and under the condition of vortex spraying should meet the requirements of Table 2. |tt||4.12 Controllability
4.12.! Designed bearing life should be no less than 2000h. 4.12.2 Working life of atomizing wheel should be no less than 2000h.
4.12.3 For atomizing wheel with corrosive materials, the wear-resistant parts should be replaceable and the working life of pins should be no less than 10000h.
5 Test method
5.1 Determination of evaporation capacity of coal-fired machine
5.1.1 Material washing water or city white water
5.1.2 Test oil instrument is The error is not more than "industrial thermometer (or temperature measuring instrument) and ordinary industrial thermometer. 5.1.3 Test equipment and method:
) The ambient temperature at the air outlet before starting the machine should not exceed (; b) Adjust the inlet and outlet humidity of the dryer to 50 and 10 degrees respectively: :) Add warm water (or urban household water), and measure the evaporation of water () when the dryer is running at a fixed condition, and record the evaporation time for at least 2h
) Evaporation energy calculation:
The energy of the dryer (kg) is the amount of water evaporated (g)/taking time (h). S.2 The noise produced by the machine under low frequency load is measured with a sound meter, that is, the noise is measured at no less than four points at the midpoint of the prototype, 1m away from the equipment surface and T.5 meters away from the ground, and the average value is taken. The background noise is processed according to the requirements of 3.6 of GB3768-83. The result should conform to the provisions of Table 1.
5.3 Noise measurement of the atomizer running alone outside the drying tower Place the atomizer outside the drying tower, and when the atomizer is fully loaded and running at a constant speed, measure the noise according to the instruments and methods specified in 5.2.
5.4 Dynamic balancing is carried out with a balance machine.
5.S The vibration range is measured by the rod-block comparison method. 5. The vibration of the bearing is measured with a dynamic measuring instrument with a difference of not more than 10.0mm. 5.7 The quality of the net material flow should be in accordance with S 2672-85 11 2.4.2, 2.6 and 2.6. 5.8 The life of each test should be calculated by using the actual operation records on site, and the quality inspection team of the production department or the production unit should be responsible for it.
6 Inspection rules
6.1 The dryer must be inspected and qualified by the original inspection department of the manufacturer, and the product quality certificate must be attached before it can leave the factory. 6.21 The inspection of the dryer is divided into factory inspection and type inspection. 6.2.1 Delivery start
6.2.1.1 Each dryer shall be inspected and run-in for not less than 12 hours at 1/2 working speed. The engine should run at no-load for more than 21h at rated speed, run at 1/2, 1/4 and 3/4 of full load for 2h, run at full load for more than 15h (excluding the running time), and the engine should run smoothly during the process. The lubricating oil should be tested to be normal, without abnormal vibration and noise, and without oil leakage. The engine should be inspected according to the provisions of 2-4.9. 6.2.1.2 If any of the factory inspection items is unqualified, the product is unqualified. 6.2.1.3 The factory inspection items are allowed to be inspected at the production site, and the on-site commissioning report provided by the production and commissioning personnel or the production unit or confirmed by the inspection department can be used as the delivery basis. .2.24 Qualification Inspection
JB/T 8714—1998
6.2.2.1 When the following cases occur: Type inspection shall be carried out: Product trial production appraisal or minor production 5) When the production is discontinued for 7 years: () The structure and material of the product have changed significantly: d) When the national quality inspection agency proposes a request for type inspection 6.2.2.2 Type inspection In addition to the factory inspection, 4.10, 4.11 and 4.12 shall also be inspected. 6.2.2.3 For type inspection, one unit shall be randomly selected from the finished product warehouse of the manufacturer or selected by relevant personnel in advance. (2.2.4 Type inspection If any item other than 4.t. is unqualified, the unit shall be double sampled for re-inspection. If there are still unqualified units, they shall not be accepted.
Overview, packaging, transportation and storage
7. 1 Marking
7. 1.1 The product brand shall be fixed on the second explosion tower with its type, corresponding technical requirements and symbols (E 13C6). Its content includes:
) manufacturer name and
5) product name;
d: product model
) manufacturing date:
product number.
7.1.2 The product can be marked with markings.
7. 1. 3 Special packaging marks
The product packaging surface should have shipping and receiving packaging, transportation diagrams and other marks. The empty packaging should comply with the specifications of C and GE1:
7.2.1 The product should be packed in a press-fit box. The product should be shipped in a box with the optional function of preventing browning. 7.2.2 The product should also be accompanied by the following documents:
a) Product quality certificate;
b) Product instruction manual (including instructions and diagrams); Packing list (random accessories); , tool cleaning market)7.3 selection of transport
.3.1 the benefits of the product should be left behind or eliminated during transportation, 7.3.2 the chemical equipment should have a maintenance plan when it reaches the transport validity period. (R5, R50> should be packed separately.
the dyeing machine should be in the room with constant corrosion medium, and the storage period should be changed every 5 months.
JR/T 87141998
Appendix A
(Reminder Appendix》www.bzxz.net
International Standard IS01940/1
Mechanical Power - Rigid Rotor Balancing Products
-Part 1: Determination of Specific Residual Unbalance (First Edition 1986-09-0], Excerpt)
4 Measurement of Rotor Mass and Permissible Residual Unbalance
Generally speaking, the larger the rotor mass, the larger the residual unbalance. Therefore, the permissible residual unbalance proposed by the relationship rn
is consistent with the relationship between the permissible residual unbalance () and the rotor mass (m). In the case of special In special cases, the entire unbalance of the rotor is simplified to an equivalent system of a single unbalance located only in one horizontal or plane between the shafts. When the unbalance is assumed to be 90%, the allowable residual unbalance (half the allowable mass center of mass deviation from the shaft load) is considered to be the correct value of the allowable residual unbalance (). Under all general conditions represented by 1, the allowable values will be reached after the two sides are balanced. The equivalent residual mass center of mass displacement () is less than the allowable residual unbalance ().
5 Relationship between quality grade and working speed and allowable residual unbalance Experience shows that, in general, for the same type of vehicle with the same quality grade speed as shown in the figure, the calculated residual unbalance is inversely proportional to the rotor speed. That is, w is the value of the rotor at Maximum T. Angular velocity when the rotor is rotating. This relationship forw = comst
also takes into account the following car practice. That is, for geometrically similar rotors running at the same linear speed, the total forces in the rotor and bearings are the same. The balance quality grade (Figure 1 and Figure 2) is formulated based on this relationship. Table I Commonly used balance product grades for various properties of the balance product grade
Determination of required balance quality
- Commercial selection
Rotor in Australia
Rui thank
Oil and fuel will grab the machine package quiet main separation machine (south) brush field wheel it analysis dry
machine or ||t t||Selected flat press machine
machine tool transmission equipment
specially built for the medium-sized variable-speed machine tool that does not have the required quality of the small electric light excavator parts in grade 6.S. The following three methods are introduced in G.2 to 4. The first method is based on the experience of long-term practice of various rotors of large covers and the quality correction (see, 6, 2 factors): The second method is the experimental method, which is used for large-scale production of mother S
JD/17141998
balance (see 3). If the dynamic imbalance is caused by the theory of bearing support, the three methods can be used. Only the specific method is changed to make the balance quality determined by the manufacturer
6.2 according to the version established to determine the balance quality. The flat quality grades established on the basis of 4 and 5 make the quality classification possible. Each level quality grade in the "clothing" package refers to a range of allowable residual balance from three limits to the center. The upper limit is determined by a certain value of the product, and the unit is / level quality grade. The residual product is r30n/, so the balanced product grade is G63C. Each half-balanced quality grade is divided by a coefficient of 2.5.The quality required for small electric light-duty equipment in the S-class is determined by the three methods described below. The first method is based on the experience gained from long-term macro-practice of various rotors (see, 6, 2 factors): the second method is the experimental method, which is used for large-scale production of S
JD/17141998
balance (see 3). If the dynamic unbalance is used to determine the technical components, the three methods can be used. Only the final method is changed. The balanced quality is determined by the manufacturer using the formula established in accordance with 6.2. The balanced quality grades established on the basis of 4 and 5 make it possible to classify the quality effectively. Each of the half-balanced quality grades in the center refers to a range of allowable residual balance from three limits to the center. The upper limit is determined by a certain value of the product, the unit is /. The residual product of the half-balanced quality grade is r30n/, then the balanced product grade is G63C. Each half-balanced quality grade is divided by a coefficient of 2.5.The quality required for small electric light-duty equipment in the S-class is determined by the three methods described below. The first method is based on the experience gained from long-term macro-practice of various rotors (see, 6, 2 factors): the second method is the experimental method, which is used for large-scale production of S
JD/17141998
balance (see 3). If the dynamic unbalance is used to determine the technical components, the three methods can be used. Only the final method is changed. The balanced quality is determined by the manufacturer using the formula established in accordance with 6.2. The balanced quality grades established on the basis of 4 and 5 make it possible to classify the quality effectively. Each of the half-balanced quality grades in the center refers to a range of allowable residual balance from three limits to the center. The upper limit is determined by a certain value of the product, the unit is /. The residual product of the half-balanced quality grade is r30n/, then the balanced product grade is G63C. Each half-balanced quality grade is divided by a coefficient of 2.5.
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