GB/T 25234-2010Grain and oil machinery - Impeller airlock (English PDF)

1 Scope

This standard specifies the classification, working principle, product type, parameter item requirement, technical requirement, test method and inspection standard of impeller air blower

And signs, packaging, shipping and storage requirements.

This standard is applicable to the supply and discharge of powdered and granular materials connected to pneumatic conveying systems.

2 normative reference documents

The terms of the following documents are hereby incorporated by reference into this standard. Whichever is the date of the reference file, which is followed by all (Excluding corrigenda) or revisions do not apply to this standard, however, encourage the parties to reach an agreement under this standard

Whether you can use the latest version of these files. For undated references, the latest edition applies to this standard.

GB/T 191 packaging and storage icon

GB/T 3768 Acoustic vocal pressure method for the determination of noise sources Sound power level Reflective surface above the use of envelope measurement of the surface of the simple method

Mechanical electrical machinery - Electrical equipment - Part 1. General technical requirements GB 5226.1

GB/T 13306 signs

General specification for packaging of grain and oil machinery products GB/T GB/T 24856 General technical conditions for grain and oil machinery castings GB/T General technical requirements for coating of grain and oil machinery products GB/T

3 working principle

Through an aliquot of the impeller in the shell rotation, relying on the upper part of the shell material or material feeding device filled with impeller cavity,

The airflow from the pneumatic conveying system is removed and the material is discharged with the rotation of the impeller to the lower part of the shell.

4 classification

According to the no-load static state under the rated pressure difference between the different air leakage is divided into ordinary type of air shutters and high airtight type two types of air shutters.

5 models and basic parameters

6 technical requirements