This standard specifies the type and basic parameters, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of nozzle-discharging disc yeast separators. This standard applies to disc yeast separators for yeast liquid concentration. JB/T 7242-1994 Disc Yeast Separator JB/T7242-1994 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T7242-94
Disc Yeast Separator
Published on July 18, 1994
Ministry of Machinery Industry of the People's Republic of China
Implementation on July 1, 1995
Mechanical Industry Standard of the People's Republic of China
Disc Yeast Separator
1 Subject Content and Scope of Application
JB/T7242-94
This standard specifies the type and basic parameters, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of nozzle-discharging disc yeast separators.
This standard applies to disc yeast separators (hereinafter referred to as separators) for alcohol mother liquor concentration. 2 Reference standards
GB1497
GB7781
GB10897
GB10898
GB/T13384
JB/T5287.1
3 Terminology
3.1 Rated operating conditions
Basic technical requirements for rotating electrical machines
Basic standards for low-voltage electrical appliances
Method for compiling separator models
Technical conditions for disc separators
Test methods for disc separators
General technical conditions for packaging of electromechanical products
Phosphorus beer separator
The content of dry yeast in the alcohol mother liquor is 10~15g/L, the pressure is 0.04~0.16MPa, and the temperature is 15~40℃. The flow rate is within the rated processing capacity range and the drum reaches the rated speed. 3.2 Rated processing capacity
The amount of mother liquor passing through the separator per unit time under rated working conditions. 3.3 Yeast liquid concentration
The mass of dry yeast contained in unit volume of yeast liquid. 4 Type and basic parameters
Product model
The method of indicating the model of the separator shall comply with the provisions of GB7781. 4.2 Structural type
The separator is divided into the following three types according to the direction of the drum nozzle discharge: drum side nozzle discharge type (see Figure 1): a.
Drum diameter reduction nozzle discharge type (see Figure 2): b.
Inner nozzle discharge type (see Figure 3).
Approved by the Ministry of Machinery Industry on July 18, 1994
Implemented on July 1, 1995
JB/T7242--94
Figure 1 Nozzle discharge separator at the periphery of the drum
Figure 2 Nozzle discharge separator at the reduced diameter of the drum Internal nozzle discharge separator
4.3 Basic parameters
The basic parameters of the separator shall comply with the provisions of Table 1. 670
5 Technical requirements
5.1 Basic requirements
Nominal diameter
JB/T724294
Equivalent sedimentation area
X10°cm
5500~6700
50006600
4750~5500
4500~5000
4000~4800
65~100
80~120
Motor power
The separator shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 5.2 Environmental requirements
The environment to which the separator is adapted shall comply with the provisions of Article 3.2 of GB10897. 5.3 Performance requirements
Rated processing capacitybzxZ.net
8000~15000
15000~25000
20000~35000
30000~50000
40000~65000
5.3.1 The performance requirements of the separator shall comply with the provisions of Article 3.3 (except Article 3.3.4) of GB10897. .2 The separator should be able to meet the concentration requirements of the yeast solution under rated working conditions. According to the process diagram shown in Figure 4, after the primary separation of the separator, the concentration rises from 10~15g/L to 30~50g/L, and the light liquid contains no more than 30 million yeasts/mL. 5.4 Safety, sanitation and environmental protection requirements
5.4.1 In addition to complying with the provisions of this standard, the safety, sanitation and environmental protection requirements of the separator should also comply with the provisions of Article 3.4 of GB10897.
5.4.2 The matching motor and electrical control box of the separator should meet the requirements of the working environment and operating conditions specified by the separator, and comply with the provisions of GB755 and GB1497.
5.4.3 Under rated working conditions, the noise sound power level of the separator should not exceed 105dB(A). 5.5 Appearance quality requirements
The appearance quality requirements of the separator should comply with the provisions of Article 3.5 of GB10897. 5.6 Material requirements
The materials used in the separator shall comply with the provisions of Article 3.6 of GB10897. 5.7 Manufacturing process requirements
The manufacturing process requirements of the separator shall comply with the provisions of Article 3.7 of GB10897. 3
The light liquid contains ≤0.30 billion yeasts/mL
6 Test methods and inspection rules
JB/T7242~-94
Yeast liquid concentration 10~15g/L
Temperature 15~40C, pressure 0.04~0.16MPa/DPI
Concentrated liquid 30~50g/L
Heat-clearing and steaming
Water, water and air
Figure 4 Process diagram
6.1 The mechanical performance test method of the separator shall comply with the provisions of GB10898. 6.2 The performance test of the separator for separating yeast shall be subject to the following provisions. 6.2.1 The performance test of separated yeast liquid shall be carried out in the yeast production plant. 6.2.2 When the separator is working, the feed concentration, pressure, flow and concentrate concentration and flushing liquid flow shall be measured regularly, and the light liquid bacterial content shall be randomly sampled and checked, which shall meet the requirements. The measurement method shall be in accordance with the provisions of Appendix A of JB/T5287.1. 6.2.3 The test of the separator shall comply with the provisions of Figure 4, and the effect of primary separation under rated conditions shall meet the requirements of Article 5.3.2. 6.3 The factory inspection and type inspection of the separator shall comply with the provisions of Chapter 4 of GB10897. Marking, packaging, transportation and purchase and storage
The marking, packaging, transportation and storage of the separator shall comply with the provisions of Chapter 5 of GB10897 and GB/T13384. 8 Quality Assurance Period
If the user complies with the maintenance and use rules, within 12 months from the date of shipment from the manufacturer, if the separator is damaged or fails to work properly due to poor manufacturing, the manufacturer shall be responsible for repairing or replacing it free of charge (excluding wearing parts). Additional Notes:
This standard was proposed by the National Technical Committee for Difficult Standardization of Separators, and this standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard is drafted by Guangzhou Heavy Machinery Factory. The main drafters of this standard are Zhang Lixiao and Zhu Gehui.
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