Standard for the hottest spiral packer

The subject content and scope of application of screw packer standard

sb/t 10067-921 this standard specifies the product model, basic parameters, technical requirements, test methods, inspection rules, marks, packaging, transportation and storage of screw packers

this standard is applicable to spiral balers in the flour industry (hereinafter referred to as balers)

2 reference standard GB 2828 batch by batch inspection counting sampling procedure and sampling table (applicable to continuous batch inspection)

GB 3768 simple method for determination of sound power level of noise source

3 models and basic parameters

3.1 models

examples

3.2 basic parameters

basic parameters of packer see Table 1

Table 1

packing barrel diameter, CM

23

24

maximum output, t/h

6

8

equipped with power, Kw

1.5

note: balers of other specifications also refer to this standard

4 technical requirements 4.1 manufacturing basis

in addition to complying with the provisions of this standard, the products shall be manufactured according to the drawings approved by the specified procedures. The polyester film industry is affected by the excess of overall production capacity and technical documents

4.2 service performance

4.2.1 reciprocating parts should be accurately positioned without jamming

4.2.2 the brake shall be self-locking and reliable

4.2.3 the counter counting should be accurate and reliable

4.2.4 the packing pressure should be adjustable

4.2.5 the operation part should be convenient, flexible and reliable; During operation, the hopper should not accumulate powder

4.2.6 under normal use conditions, the working time from the beginning of use to the first shutdown due to manufacturing quality problems shall not be less than 1000 H

4.2.7 the service reliability coefficient shall not be less than 0.9

4.3 safety, health and environmental protection

4.3.1 fasteners of moving parts shall be equipped with locking devices, and rotating parts shall be equipped with safety protection devices

4.3.2 electrical lines should be arranged neatly and firmly connected. Lines with different functions should be protected with wires of different colors. Electrical control elements should be flexible, accurate and reliable. Good grounding devices should be provided to ensure personal safety

4.3.3 the pneumatic system should have air exhaust holes, and the air circuit should be equipped with air purifier, oil mist, and pressure regulating device to ensure that the air source is clean, the components are well lubricated, and the air source pressure is stable

4.3.4 toxic paint is not allowed at the contact with materials

4.3.5 when no-load, the A-level noise shall comply with the provisions of Table 2

Table 2

grade

superior products

first class products

qualified products

noise value, DB

<75

<80

<82

4.4 energy consumption index

4.4.1 the no-load power of the packer is not greater than 0.18 kW

4.4.2 at the maximum output, the power consumption per ton of pulverized coal shall comply with the provisions of Table 3

Table 3

grade

superior products

first class products

qualified products

power consumption per ton of powder, kW · h

<0.25

<0.3

<0.35

4.5 finishing

4.5.1 exposed metal processing surfaces that are not painted should be treated for rust prevention

4.5.2 the surface coating should be firm, flat and bright, the pattern paint surface should be symmetrical, and no obvious appearance defects are allowed

5 test method 5.1 detection in article 4.2.1 of this standard

visual inspection

5.2 detection in article 4.2.2 of this standard

add a weight of 50 kg on the support plate. The support plate box does not have many kinds of training materials and monographs about the use knowledge and experience of this type of flash tester, so it will slide down by itself, and it will be tested for 5 consecutive times

5.3 the detection in article 4.2.3 of this standard

make the counter work no less than 100 times by hand, and check whether the counter counts correctly

5.4 the detection in article 4.2.4 of this standard

adjust the pressure adjusting nut of the brake, and put a weight of 60 kg on the supporting plate. When the nut is tightened, the supporting plate box should not slide automatically. When the nut is loosened, the supporting plate box should slide automatically, and repeat for 5 times continuously

5.5 the detection of article 4.2.5 of this standard

visual inspection

5.6 the test data of article 4.2.6 of this standard

shall be provided by the user using this product

5.7 the test of article 4.2.7 of this standard

shall be carried out according to article a2.3.4 of Appendix A

5.8 the inspection of articles 4.3.1 ~ 4.3.3 of this standard

visual inspection

5.9 inspection of article 4.3.4 of this standard

visual inspection and inquiry

5.10 the test of article 4.3.5 of this standard

shall be carried out according to Article 6.4 of GB 3768

5.11 after the detection in article 4.4.1 of this standard

no-load operation is normal, use the tachometer and voltmeter to measure the speed and voltage of the motor, then the no-load power of the packer is calculated according to formula (1) and formula (2):

.......................................................................... (1)..................................... (2) where: PN - rated power of the motor, kW; β -- motor load rate,%; △ p - no load power of packer, kW; N1 - synchronous speed corresponding to the rated speed of the motor, r/min; NE -- rated speed of motor, r/min; N -- measured speed of the packer when it is unloaded, r/min; UE - rated voltage of motor, V; U - measured voltage when the packer is unloaded, V. 5.12 the detection of article 4.4.2 of this standard

shall be carried out according to Article B, C and D of a1.3.2 of Appendix A

5.13 inspection of article 4.5.1 of this standard

visual inspection

5.14 detection in article 4.5.2 of this standard

coating firmness inspection, use a double-sided blade to draw 11 lines of the paint layer horizontally and vertically on the paint film of the random sample, with a spacing of 1 mm, then stick it firmly with zinc oxide plaster, and uncover it violently once. The percentage of paint film falling off in the square should be less than 5%; Other visual inspection

6 inspection rules the packer must be inspected by the quality inspection department of the manufacturer and attached with a certificate before leaving the factory

6.1 inspection classification

packer inspection is divided into delivery inspection and type inspection

6.1.1 delivery inspection

a. items 4.2.1 ~ 4.2.5, 4.3.1 ~ 4.3.4 and 4.5.1 of this standard should be inspected one by one

b. sampling inspection in articles 4.3.5, 4.4.1 and 4.5.2 of this standard

6.1.2 type inspection

type inspection includes delivery inspection, production test and performance test. The prototype should be subject to the delivery inspection of the whole project (including articles a and B of 6.1.1 of this standard). The production test and performance test can be carried out only after it is qualified. The production test cycle should not be less than 2000 h, and the number of performance tests should not be less than 5. The test method should be carried out according to the spiral packer test method in Appendix A (Supplement) of this standard, The technical requirements shall comply with national standards, industrial standards, enterprise standards and other relevant provisions

type inspection shall be carried out in case of one of the following conditions:

a. when new products or old products are transferred to factory for trial production and finalization appraisal

b. after formal production, if there are major changes in structure, material and process, which may affect product performance

c. when production resumes after one year of shutdown

d. one year of normal production

e. the social consciousness of our country needs to be improved urgently when the quality supervision department puts forward requirements

6.2 sampling and batching principles

6.2.1 the ex factory sampling inspection of products is carried out in accordance with the provisions of GB 2828. The use of secondary sampling scheme and general inspection level has become an important means for enterprises to improve production efficiency and reduce labor costs. II. The qualified quality level (AQL) is negotiated by the ordering party and the supplier

6.2.2 sample 1-2 prototypes for product type inspection

6.2.3 article C, D and e of 6.1.2 of this standard do not carry out production test and performance test, but only carry out factory inspection of the whole project (including articles a and B of 6.1.1 of this standard)

7 marks, packaging, transportation and storage 7.1 marks

7.1.1 products shall be marked with product labels, operation and safety signs, and fixed at the positions specified in the drawings

7.1.2 product standard