This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of industrial dehydrators. This standard applies to centrifugal dehydrators for dehydrating textiles. QB/T 2324-1997 Industrial dehydrators for garment machinery QB/T2324-1997 Standard download decompression password: www.bzxz.net

QB/T2324—1997
This standard is proposed by the Quality Standards Department of China Light Industry General Association. This standard is under the jurisdiction of the National Technical Committee for Standardization of Garment Machinery. The drafting unit of this standard: Shandong Penglai Feifan Washing Machinery Co., Ltd. The main drafters of this standard: Sun Shoujie, Wang Hengqiangyan
From the date of implementation of this standard, the professional standard ZBY99016--1989 "Industrial Dehydrator" issued by the former Ministry of Light Industry shall be invalid. This standard is revised for the first time.
1 Scopewww.bzxz.net
Light Industry Industry Standards of the People's Republic of China
Garment Machinery
Industrial Dehydrator
QB/T 2324—1997
This standard specifies the product classification, technical requirements, test methods, inspection specifications, marking, packaging, transportation and storage of industrial dehydrators. This standard applies to centrifugal dehydrators for dehydrating textiles. 2 Referenced standards
The clauses contained in the following standards constitute the clauses of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the new versions of the following standards. GB191—1990 Pictorial markings for packaging, storage and transportation
GB/T3768—1983 Simple method for determining the power level of noise sources GB/T5226—1985 General technical conditions for electrical equipment of machine tools, markings for receiving and delivering transportation packages
GB/T 6388—1986
3 Product classification
According to the structural type:
a) Vertical dehydrator;
b) Horizontal dehydrator.
4 Technical requirements
4.1 Working conditions
a) Ambient temperature 0℃～40℃;
b) Relative humidity of air below 95% (when the temperature is 25℃);c) Power supply three-phase AC, rated frequency 50Hz, rated voltage 380V. 4.2 Safety performance
4.2.1 The sound pressure level of load operation is not more than 82dB(A). 4.2.2 At room temperature, the insulation resistance between the live parts and the casing should be not less than 2Mα. 4.2.3 The machine casing should have obvious and permanent rotation direction markings. 4.2.4 The cage structure should have sufficient strength and rigidity to ensure high-speed and safe rotation. 4.3 Important rotating parts that are easy to loose should have reliable anti-loosening devices. Other fastening parts should be firm and reliable without loosening. The machine runs smoothly without friction.
4.4 The machine should generally be equipped with a brake device, and the idle running brake time should be less than 20s. 4.5 Performance
4.5.1 After dehydration, the relative moisture content of the fabric should not be greater than 50%. 4.5.2 The fabric after dehydration should have no mechanical damage. 4.5.3 The rotating cage should be subjected to dynamic balance or static balance test, and the increase or decrease of the unbalanced mass should not exceed 1/400 of the total mass of the rotating cage. Its balance accuracy should not be lower than G6.3 level. During the balance test, the strength of the parts should not be destroyed. 4.6 Appearance quality
4.6.1 The coating layer of the painted parts should be firmly attached and the color should be uniform. 4.6.2 The plating layer of electroplated parts should be firm, the surface should be smooth, and there should be no rust or scratches. 4.6.3 The surface of black oxidized parts should not have defects such as rust and spots. 4.6.4 The nameplate should be placed upright and firmly in a conspicuous place on the machine, and the marking should be clear and complete. 5 Test method
5.1 Test conditions
a) The relative humidity of the air is below 95% (when the temperature is 25℃); b) The test voltage is rated voltage (380±19)V; c) The test material is bleached medium plain cotton cloth with a warp and weft number of (21±2). Cloth with similar cloth numbers can be used for general tests. 5.2 Safety performance test
5.2.1 Noise test
5.2.1.1 Test conditions
a) The test instrument shall be a sound level meter of type I or above or other test instruments with equivalent accuracy; b) The test environment requirements shall be the same as those in Chapter 3 of GB/T3768-1983; c) Load operation.
5.2.1.2 Test method
The sound level meter is 1m high and is measured at 1m from the machine outline (including the motor) on the opposite sides of the three feet. The arithmetic average of the noise values ​​at the three points is taken as the machine noise value.
5.2.2 Insulation resistance test
Test the insulation resistance in accordance with the provisions of GB/T5226. 5.2.3 Visual inspection shall comply with 4.2.3, 4.2.4 and 4.3. 5.3 Use the hand brake to test the braking time of the machine running at the rated speed. 5.4 Performance test
5.4.1 Test of relative moisture content
5.4.1.1 Weigh the test material placed under the specified test environment for 24 hours according to the rated load. 5.4.1.2 Soak the test material in water, place it evenly in the rotating cage after it is soaked, and start the machine. 5.4.1.3 From the time the rated speed is reached, use a stopwatch to time the dehydration according to the dehydration time specified in the manual. 5.4.1.4 When the dehydration time is reached, turn off the power and brake, take out the material and weigh it immediately. 5.4.1.5
Calculate the relative moisture content according to formula (1).
Relative moisture content, %;
Where—
Gi-mass of the test material after dehydration, kg;
Gi= G× 100
Gmass of the test material placed under the test conditions for 24 hours, kg. (1)
5.4.2 Use fine silk or nylon cloth to wipe the surface of the rotating cage that contacts the material. There should be no snagging. 5.4.3 The dynamic balance test should be carried out on a dynamic balance test machine. The static balance test should ensure that the support shafts at both ends are level. Use a level with a sensitivity of 2mm/m to test. The increase or decrease in mass is calculated by calculation. 5.5 Appearance quality test
Visual inspection should comply with 4.6.
6 Inspection rules
QB/T 2324—1997
6.1 Each batch of products must be inspected and qualified by the quality management department of the manufacturer and can only be shipped after the product qualification certificate is issued. 6.2 See Table 1 for inspection items and classification.
Inspection classification
Factory inspection
Type inspection
4.2.2,4.2.3,4.2.4,4.3,4 4,4.5.2,4.6 Technical requirements in full
6.2.1 The items for factory inspection are shown in Table 1.
6.2.2 The items for type inspection are the full contents of technical requirements. 6.2.2.1 Type test shall be conducted in the following cases. a) When new products are trial-produced or old products are transferred to other factories; b) During normal production, when there are major changes in product structure, materials, and processes that may affect product performance; c) During normal production, once a year; d) When the product is discontinued for more than half a year and production is resumed. 6.2.2.2 Type inspection samples shall be randomly selected from continuous production batches. One unit shall be selected for a batch of less than 20 units, and two units shall be selected for a batch of more than 20 units (including 20 units).
6.2.2.3 During type inspection, if one of the safety performance indicators fails to meet the standards, the batch of products shall be judged as unqualified. If there are any unqualified items in the remaining items, double sampling shall be conducted for unqualified items. If they still fail to meet the standards, the batch of products shall be judged as unqualified. 7 Marking, packaging, transportation and storage
7.1 Marking
Each product shall have a durable nameplate and trademark, and the following contents shall be clearly marked on the nameplate: a) registered trademark;
b) product name;
c) product model;
d) main technical parameters;
e) manufacturer name;
f) manufacturing date;
g) factory number.
7.2 Packaging
7.2.1 Products shall be packed in firm boxes with moisture-proof protection measures. 7.2.2 The packaging box should be able to ensure that the machine will not be damaged due to vibration, loading and unloading, moisture and dust intrusion under normal transportation and storage conditions.
7.2.3 Before packaging, the exposed metal surface of the machine without coating should be painted with anti-rust agent. 7.2.4 The packaging can be agreed upon by both parties.
7.2.5 The product should be equipped with the following documents:
a) Product certificate;
b) Product instruction manual;
c) Packing list.
7.2.6 Marking on the outer surface of the packaging box
7.2.6.1 The storage and transportation graphic markings should comply with the provisions of GB191. 110
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QB/T23241997
7.2.6.2 The shipping mark should comply with the provisions of GB/T6388. 7.3 Transportation
During loading, unloading and transportation, the product should be protected from vibration and severe impact. 7.4 Storage
After packaging, the product should be stored in a ventilated, dry room without corrosive gases. If the product is more than six months from the date of manufacture, it should be unpacked and treated for rust prevention.
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