Some standard content:
QB/T2330—1997
This standard is formulated by comprehensive analysis based on the absorption of foreign advanced technology and test data of enterprise production practice. This standard is proposed by the Quality Standards Department of China Light Industry Association. This standard is under the jurisdiction of the National Technical Committee for Standardization of Garment Machinery. The drafting unit of this standard is Shanghai Hangxing-Saida Commercial Machinery Co., Ltd. The main drafters of this standard are Zhang Xinmin and Yang Weihua. 144
Light Industry Industry Standard of the People's Republic of China
Garment Machinery
Industrial Dryer
QB/T 2330—1997
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of industrial dryers. This standard applies to industrial dryers and commercial dryers (hereinafter referred to as industrial dryers). 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB191—1990 Pictorial markings for packaging, storage and transportation
GB/T4288—1992 Household electric washing machinesGB4706.1—1992
General safety requirements for household and similar electrical appliancesGB/T5226-—1985 General technical conditions for machine tool electrical equipment, shipping packaging, receiving and delivery markings
GB/T 6388—1986
3 Product classificationwww.bzxz.net
3.1 Type
3.1.1 According to the degree of automation
a) Ordinary type;
b) Fully automatic type.
3.1.2 According to the heating method
a) Steam heating type;
b) Electric heating type.
4 Technical requirements
4.1 Working conditions
4.1.1 Power supply
Rated frequency 50Hz;
Rated voltage·Single-phase voltage 220V, three-phase voltage 380V. 4.1.2 Working environment temperature 0~~40℃, relative humidity below 95% (temperature is 25℃). 4.2 Safety performance
4.2.1 Leakage current
The leakage current of industrial dryer shall not exceed the value specified in Table 1. Approved by China Light Industry Federation on September 1, 1997
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Implementation on May 1, 1998
Electric heating
Heating form, kg
Steam heating
QB/T2330--1997
>10～200
4.2.2 At room temperature, the hot insulation resistance between the live parts and the casing shall not be less than 2MQ. Leakage current, mA
4.2.3 Grounding terminals should be provided at visible locations on the machine surface, and there should be obvious and durable grounding symbols. The resistance between the grounding terminal and the housing should not be greater than 0.1Ω.
4.2.4 The electrical strength test between the live parts and the exposed non-live parts should be able to withstand 1min without flashover or breakdown.4.2.5 The front of the industrial dryer must be equipped with a drying temperature indicator. For electric heating, there should be a temperature control device and an over-temperature protector.4.3 Overall performance
4.3.1 Operation performance
The industrial dryer should be able to operate normally under rated load.4.3.2 Volume load ratio
The ratio of the rated volume of the tumbler to the capacity of the clothes being dried is greater than 18. 4.3.3 Noise
The sound pressure level is not greater than 85dB(A).
4.3.4 Drying performance
The moisture content is not greater than 20%.
4.3.5 Vibration
The maximum value of the industrial dryer is not greater than 7.1mm/s. 4.3.6 Energy consumption ratio
The energy consumption ratio of the amount of electricity or steam consumed by the industrial dryer for evaporating each kilogram of water shall not exceed the value specified in Table 2. Table 2
Heating method
Electric heating type
Steam heating type
4.4 Appearance performance
Electricity consumption
(kw ·h)/kg
Steam consumption
4.4.1 The inner surface of the industrial drying machine cage that contacts the fabric should be smooth and free of burrs. Clamping and scratching of the fabric is not allowed. 4.4.2 All welds and riveted joints must be smooth and firm, without looseness, desoldering and cracks. 4.4.3 The observation window glass should be flat, clear and transparent, able to withstand changes in drying temperature, and not break or deform. 4.4.4 There should be no defects such as bottoming, peeling of the electroplating layer, bubbling, obvious spots and scratches on the electroplated parts, and there should be no rust spots on the main surface. The writing on the nameplate should be clear. The coating layer of the painted parts should be firmly attached and have a uniform color. The visible parts should have no obvious flow marks, bubbling, peeling and other phenomena. 5 Test method
5.1 Test conditions and instruments and meters
5.1.1 The test environment should be free of external strong electric and magnetic field interference, and free of harmful Gas. 5.1.2 When conducting the test on site, the test machine should be more than 3m away from the wall or placed in an open outdoor place with a flat and hard ground. 5.1.3 The steam pressure of steam-heated industrial drying machines should be within the range of 0.4~~0.8MPa. 5.1.4 Instruments, meters and accuracy
a) Voltmeter 0.5 level;
b) Three-phase watt-hour meter 2.0 level;
c) Megaohmmeter DC, 500V, 1.0 level, d) Leakage current meter <2.3%;
e) Ground resistance meter 0.5 level;
f) Withstand voltage test device 5%;
g) Sound level meter 1.5 level;
h) Timer 0.5s.
5.2 Safety requirements test
5.2.1 Operation performance
QB/T 23301997
Under rated load, visual inspection shall meet the requirements of 4.3.1. 5.2.2 Leakage current
Measured by the method specified in 13.2 of GB4706.1-1992, the measured value shall meet the requirements of 4.2.1. 5.2.3 Insulation resistance
Measured by a DC 500V megohmmeter between the live part and the exposed non-live metal part, the hot insulation resistance value shall meet the requirements of 4.2.2.
5.2.4 Grounding resistance
Measured by a grounding resistance meter between the grounding terminal and the exposed non-live metal part, the resistance value shall meet the requirements of 4.2.3. 5.2.5 Electric strength
The test voltage is a single-phase AC 50Hz sine waveform, and the voltage value is 1500V. The test method is carried out in accordance with the provisions of GB/T5226 and shall meet the requirements of 4.2.4.
5.3 Machine performance test
5.3.1 Noise
Measure the noise values at the four points 1m above the ground at the center points of the front, rear, left and right surfaces of the machine. Take the arithmetic mean as the machine noise value, which should meet the requirements of 4.3.3. 5.3.2 Drying performance
5.3.2.1 Standard load cloth
a) The load cloth number during the test adopts A1.1 in Appendix A of GB/T4288-1992. b) The standard load cloth specifications are as follows: bed sheet in Figure A1, shirt in Figure A2 and napkin in Figure A3 of GB/T4288-1992. c) Sew neatly and firmly according to the dotted lines shown in the figure to make the standard load cloth. 5.3.2.2 Place the standard load fabric in the industrial washing machine, wash for 30 minutes with the rated water volume of the dry fabric water bath ratio and 5g of detergent per liter of water, rinse twice, each rinse for 5 minutes, and place the fabric in a dry place for use after dehydration. 5.3.2.3 The standard load ratio is 1 bed sheet, 2 shirts and 18 napkins as a set. 5.3.2.4 Take the specified set of fabric as a unit, weigh 1.2 times the rated capacity of the tested industrial dryer, and put it into the industrial dryer for drying. After the temperature at the outlet center rises to 80℃, weigh it every 30 minutes until the difference between the two adjacent weighing values is no more than 1%. Take it out immediately and put it into a large nylon bag with the weighed mass, and weigh the fabric according to the rated capacity of the industrial dryer. The insufficient or excessive mass should be adjusted with napkins. Soak the clothes in water and dehydrate them until the moisture content of the fabric is 80%. If the moisture content is insufficient, spray water evenly. When the industrial dryer is heated to 60℃ at the outlet center under no-load condition, put the fabric into the dryer for testing and start the timer. After running for 1 hour, take out the fabric and put it into a nylon bag for weighing. 5.3.2.5 Calculation of moisture content
g2 - g1 × 100
Where: G
moisture content,%;
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Rated dry fabric mass, kg;
QB/T 2330 — 1997
g2——fabric mass after drying in industrial dryer for 1 hour, kg. 5.3.3 Vibration
Under rated conditions, after the running speed reaches stability, use a vibration tester to measure the vibration speed of the central part of the front, rear, left and right sides of the machine body. The measured value should meet the requirements of 4.3.5. 5.3.4 Energy consumption ratio
Under rated conditions, use a three-phase watt-hour meter steam flow meter and a timer to measure the amount of electricity or steam consumed in 1 hour, and then calculate.
Calculation of power consumption:
Electricity consumed for drying unit fabric mass, (kW·h)/kg; Where: Q
W,-mass of standard load cloth before drying, kg; fabric mass after drying in industrial dryer for 1 hour, kg. g.
Calculation of steam consumption:
Qz= W, = gz
The amount of steam consumed to dry a unit mass of fabric, kg/kg; Where: Q2—
The total amount of steam consumed to dry a rated mass of fabric in 1 h, kg. 5.3.5 Appearance quality
The visual appearance quality shall meet the requirements of 4.4.
6 Inspection rules
6.1 Each batch of products shall 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 3 for inspection items and classification.
Inspection classification
Factory inspection
Type inspection
Inspection items
4.2.14,2.2;4.2.3;4.2.5;4.3. 1+4.4All technical requirements
6.2.1For factory inspection items, see Table 3.
6.2.2. Type inspection items are all technical requirements. 6.2.2.1Type inspection 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 a product is stopped for more than half a year and production is resumed. (2)
(3)
6.2.2.2Type inspection samples shall be randomly selected from continuous production batches. For a batch of products with less than 20 units, 1 unit will be selected; for a batch of products with more than 20 units (including 20 units), 2 units will be selected.
6.2.2.3 During the type inspection, if one of the safety performance indicators fails, the batch of products will be judged as unqualified. If there are unqualified items in the remaining items, double sampling should be conducted for unqualified items. If they still fail, the batch of products will be judged as unqualified. 7 Marking, packaging, transportation, storage
7.1 Marking
QB/T 2330-—1997
Each product should have a durable nameplate and trademark, and the following contents should 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 The product should be packed firmly and protected from moisture. 7.2.2 The packing 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 Other options can be agreed by both parties.
7.2.5 The product should have the following documents:
a) Product certificate;
b) Product instruction manual;
c) Packing list.
7.2.6 Marking on the outer surface of the packing box
7.2.6.1 The storage and transportation graphic markings should comply with the provisions of GB191. 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. The product should be unpacked and treated for rust prevention if it is more than six months from the date of leaving the factory.
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