This standard specifies the basic parameters, technical requirements, test methods, inspection rules, as well as marking, packaging, transportation and storage of hopper-type plastic dryers. This standard applies to hopper-type plastic dryers. JB/T 6494-2002 Hopper type plastic dryer JB/T6494-2002 Standard download and decompression password: www.bzxz.net

ICS83.200
G95
JB
Machinery Industry Standard of the People's Republic of China
JB/T6494--2002
replaces JB/T6494—1992|| tt||Hopper type plastic dryer
Hoppertype plastic dryer
Released on 2002-07-16
Implemented on 2002-12-01
Foreword released by the National Economic and Trade Commission of the People's Republic of China ,
1
Scope.
2
Normative reference documents
3 Terms and definitions
4 Basic parameters||tt| |5 Technical requirements,
Test methods and inspection rules
6
6.1 Test methods.
6.2 Inspection rules...
7 Marks and packaging , transportation and storage
Figure 1 Schematic diagram of noise measurement point configuration
Table 1
Table 2
Basic parameters
Noise
Mesh| | tt | revision. Compared with JB/T6494-1992, the main changes in this standard are as follows: - The standard format has been modified;
The term "loading capacity" has been added
The series has been expanded, adding three The specifications will make corresponding changes to the wording of relevant provisions, and this standard replaces JB/T6494-1992.
This standard is proposed by China Machinery Industry Federation. JB/T6494—2002
This standard is under the jurisdiction of the Plastic Machinery Standardization Sub-Technical Committee of the National Rubber and Plastic Machinery Standardization Technical Committee. This standard is drafted by Suzhou Light Industry Electrical and Plastic Machinery Factory, and Dalian Plastic Machinery Research Institute participates in the drafting. The main drafters of this standard: Dong Wenbin and Li Xianglan. m
1 scope
hopper type plastic dryer
JB/T6494—2002
This standard specifies the basic parameters, technical requirements, Test methods, inspection rules, as well as marking, packaging, transportation and storage.
This standard applies to hopper-type plastic dryers (hereinafter referred to as dryers). 2 Normative reference documents
The provisions in the following documents become provisions of this standard through reference in this standard. For dated reference documents, all subsequent amendments (excluding corrigenda) or revisions do not apply to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. . For undated referenced documents, the latest edition applies to this standard. GB/T191-2000 Packaging, storage and transportation pictorial mark (eqVISO780:1997)) Industrial ventilator performance test with standardized air duct (idtISO5801:1997) GB/T1236-2000
GB/T13306-1991 label|| tt||GB/T13384--1992
General technical conditions for mechanical and electrical product packaging
General technical conditions for rubber and plastic machinery painting (negISO2813:1978) HG/T3228--1988#
3 Terms and Definitions
The following terms and definitions apply to this standard. 3.1
Drying capacity
The quality of plastic raw materials that the dryer can dry per unit time under continuous drying conditions. 3.2
Temperature control accuracy
When the dryer is working continuously and the temperature set by the temperature controller remains unchanged, the maximum deviation of the temperature indication value from the average value is 3.3www.bzxz.net
Installation The amount of material
is the mass of nylon 6 granular plastic raw material that can be loaded into the dryer with an apparent density of 0.64. 3.4
Volume
The theoretical calculation value of the partial space range that the dryer can load plastic raw materials. 4Basic parameters
The basic parameters are shown in Table 1.
5 Technical Requirements
5.1 The dryer should comply with the requirements of each specification divided by this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 5.2 Assembly quality and appearance quality of the dryer. 5.2.1 Each sealing part should have no air leakage.
5.2.2 Fasteners should not be loose.
JB/T6494—2002
Loading Dong
kg
10
12
15
20|| tt||25
40
50
75
100
120
150
200||tt| |250
300
500
800
1000
Volume
L
16
20
25
32
40
(63)
80
125
160
( 200)
250
315
400
500
800
1250
1565
dry Explosive ability
kg/h
4
5
6
8
10
16||tt| |20
30
40
48
60
80
100
120
200
320
400
Note: Try not to use the specifications in brackets, 5.2.3
5.2.4
5.2.5||tt ||5.2.6
The weld should be smooth, flat, raw
strong.
No bumps, cracks,
corrosion phenomenon
Table 1 basic parameters
Electric heating power
kw
1.5||tt ||1.6
2.1
2.7
3.6
3.9
4.8
5.4
9.0
12.6
15.0
18.0
24.0
32
40
Air volume
ml/min
1.6
2.2
3.0
3.5
4.0
7.5
10.0
15.0
20.0| |tt||The painted surface complies with the paint film appearance requirements of HG/T3228-1988 3.4.5.1. The interior should be clean and free of foreign matter.
Wind
Machine
Wind pressure
Pa
370
630
780
1200| |tt||Rated power
kw
0.06
0.12
0.18
0.25
0.37
0.55|| tt | | 0.75 | | tt | | 1.1 | | tt | |tt||5.4 The time for the dryer to heat up to 50°C without load shall not exceed 1 hour. 5.5 The maximum hand drying temperature of the dryer shall not be lower than 130℃. 5.6 Under the condition that the relative humidity is not higher than 70% and the heating temperature is 110°C, after the plastic raw materials are put into the dryer, the drying time for the static moisture content to reach 0.2% should not be more than 2.5 hours. 5.7 The temperature control accuracy of the dryer is ±3°C. 3. The noise (sound pressure level) of the dryer is as specified in Table 2. 5.8
Charging capacity kg
≤100
>100
6 Test methods and inspection rules
6.1 Test methods
6.1.1 Dry running test
2
Table 2 Noise
Beam sound
dB (A)
≤80
≤85|| tt||After the final assembly of the dryer is qualified, a dry running test of not less than 1 hour should be carried out. 6.1.1.1 Assembly quality and appearance quality inspection Use visual inspection to inspect the assembly quality and appearance quality of the dryer. 6.1.1.2 Inspection of each sealing part
Start the fan, fully open the suction port, and check the sealing parts of the dryer by hand. 6.1.1.3 Cold insulation resistance detection
Disconnect the temperature controller and measure the cold insulation resistance of the dryer with a 500V megger. JB/T6494—2002
6.1.1.4 No-load temperature rise detection
There is no material in the hopper, the insert plate is closed, the fan suction port is fully open, and the bimetal thermometer or the alcohol placed in the hopper is measured when the machine is turned on. The time it takes for the thermometer indication to rise by 50°C.
6.1.1.5 Maximum Drying Temperature Detection
There is no material in the hopper, the insert plate is closed, the fan suction port is slightly open, turn on the machine and observe the maximum value of the rise in the thermometer indication value. 6.1.2 Load operation test
After passing the idle operation, a load operation test of not less than 2.5 hours should be carried out. 6.1.2.1 Detection of loading amount and volume
After passing the air cutting temperature rise test, load nylon 6 granules into the dryer hopper according to the loading amount specified in Table 1, and use a scale to measure the loading amount at the same time. The volume is calculated according to the formula: volume = charging amount/0.646.1.2.2 Drying time and electric heating power detection temperature controller set the appropriate temperature so that the average of the maximum and minimum values ??indicated by the thermometer is 110°C, reaching 110 After reaching ℃, take samples from the sampling hole every 15 minutes. The sampling amount is 0.2% of the charging amount. Use a rapid moisture analyzer to measure the time required for the moisture content to reach 0.2%. Use a power meter to simultaneously measure the electric heating power. The relative humidity of indoor air during the test should not be higher than 70%. 6.1.2.3 The constant temperature accuracy test
is carried out simultaneously with the drying time test. The temperature set by the temperature controller remains unchanged and the deviation of the thermometer indication value from the average value is observed. 6.1.2.4 Drying capacity test
After passing the drying time test, discharge the secondary materials from the discharge port every 5 minutes. The discharge amount each time is greater than or equal to 2 of the drying capacity specified in the table, and the corresponding materials are released at the same time. For the weight of cold material, samples should be taken from the discharge material every 30 minutes, and the moisture content should be measured with a rapid moisture analyzer. The moisture content should not be greater than 0.2% in five samplings. 6.1.2.5 Noise detection
Use a portable sound level meter to measure the noise value with the dryer fan as the sound source as shown in the figure, and take the maximum value from the four measurements. Note 1: The four measuring points are all at the horizontal position of the center line of the fan motor shaft. Note 2: The dryer to be tested should be more than 2m away from the wall, and there should be no objects around it that are prone to co-occurrence. Note 3: In positions 1 to 4, use the wrong loop method to test at least twice. Figure 1 Schematic diagram of noise measurement point configuration
JB/T6494-2002
6.1.2.6 Fan parameter detection
Individual detection of the fan according to GB/T1236-2000, 6.2 Inspection Rules|| tt||6.2.1 Factory inspection
6.2.1.1 Each dryer must pass the inspection by the quality inspection department of the manufacturer before it can leave the factory, and it should be accompanied by a product quality certificate. 6.2.1.2 Each dryer shall be tested according to the provisions of 6.1.1 before leaving the factory, and shall be inspected according to the requirements of 5.1~5.4. 6.2.2 Type inspection
6.2.2.1
6.2.2.2
Type inspection shall be carried out in accordance with regulations for all items. Type inspection should be carried out when one of the following situations occurs: Trial type appraisal of new products or old products transferred to factory for production. a)
b)
After formal production: If there are major changes in structure, materials, and processes, product performance may be affected. During batch production, sampling should be conducted at least once a year. c)
d) When production is resumed one year after the product has been discontinued. When the factory inspection results are significantly different from the last type inspection. e
When the national quality supervision agency requests type inspection. f)
6.2.2.3 Type inspection: Randomly inspect one product from the products that have passed the factory inspection. If it fails the inspection, another product will be randomly inspected. If it fails again, the type inspection will be judged as unqualified.
7 Logo, packaging, transportation and storage
7.1 The product label of the dryer should be fixed in an obvious position. The size and technical requirements of the label should comply with the regulations of GB/T13306-1991, including: | |tt||a)
b)
c)
d)
e)
Manufacturer name and trademark:
Product Name:
Product model:
Main technical parameters of the product:
Manufacturing date and serial number.
7.2 Product packaging and markings should comply with the regulations of GB/T13384--1992 and GB/T191--2000. 7.3 The following documents must be provided for each product when leaving the factory: a)
b)
c)
Product certificate:
Packing list:
Instruction Manual.
7.4 The product should be protected from rain and snow during transportation. 7.5 The dryer should be stored in a ventilated, dry place without fire sources and corrosive gases. If stored in the open air, rainproof measures should be taken.2
Type inspection shall be conducted on all items according to regulations. Type inspection should be carried out when one of the following situations occurs: Trial type appraisal of new products or old products transferred to factory for production. a)
b)
After formal production: If there are major changes in structure, materials, and processes, product performance may be affected. During batch production, sampling should be conducted at least once a year. c)
d) When production is resumed one year after the product has been discontinued. When the factory inspection results are significantly different from the last type inspection. e
When the national quality supervision agency requests type inspection. f)
6.2.2.3 Type inspection: Randomly inspect one product from the products that have passed the factory inspection. If it fails the inspection, another product will be randomly inspected. If it fails again, the type inspection will be judged as unqualified.
7 Logo, packaging, transportation and storage
7.1 The product label should be fixed in a conspicuous position on the dryer. The size and technical requirements of the label should comply with the regulations of GB/T13306-1991, including: | |tt||a)
b)
c)
d)
e)
Manufacturer name and trademark:
Product Name:
Product model:
Main technical parameters of the product:
Manufacturing date and serial number.
7.2 Product packaging and markings should comply with the regulations of GB/T13384--1992 and GB/T191--2000. 7.3 The following documents must be provided for each product when leaving the factory: a)
b)
c)
Product certificate:
Packing list:
Instruction Manual.
7.4 The product should be protected from rain and snow during transportation. 7.5 The dryer should be stored in a ventilated, dry place without fire sources and corrosive gases. If stored in the open air, rainproof measures should be taken.2
Type inspection shall be conducted on all items according to regulations. Type inspection should be carried out when one of the following situations occurs: Trial type appraisal of new products or old products transferred to factory for production. a)
b)
After formal production: If there are major changes in structure, materials, and processes, product performance may be affected. During batch production, sampling should be conducted at least once a year. c)
d) When production is resumed one year after the product has been discontinued. When the factory inspection results are significantly different from the last type inspection. e
When the national quality supervision agency requests type inspection. f)
6.2.2.3 Type inspection: Randomly inspect one product from the products that have passed the factory inspection. If it fails the inspection, another product will be randomly inspected. If it fails again, the type inspection will be judged as unqualified.
7 Logo, packaging, transportation and storage
7.1 The dryer should have a product label fixed in a conspicuous position. The size and technical requirements of the label should comply with the regulations of GB/T13306-1991, including:| |tt||a)
b)
c)
d)
e)
Manufacturer name and trademark:
Product Name:
Product model:
Main technical parameters of the product:
Manufacturing date and serial number.
7.2 Product packaging and markings should comply with the regulations of GB/T13384--1992 and GB/T191--2000. 7.3 The following documents must be provided for each product when leaving the factory: a)
b)
c)
Product certificate:
Packing list:
Instruction Manual.
7.4 The product should be protected from rain and snow during transportation. 7.5 The dryer should be stored in a ventilated, dry place without fire sources and corrosive gases. If stored in the open air, rainproof measures should be taken.
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