Machines often have technical requirements for sealing and leakage prevention. The assembly operation of using sealing parts to prevent leakage is called sealing and leakage prevention. Sealing performance is an important index to measure the quality of mechanical equipment. Automatic packaging mechanical sealing and leak proof are also the basic operating skills that maintenance workers should master in assembly and repair operations.

Basic knowledge of automatic packaging mechanical seal

(1) Function of sealing

(1) Close the space to each other by squeezing different materials

② Hinder the migration of substances (such as dust, water, gas, grease, etc.) in the two separated spaces

③ Prevent intrusion of external objects.

④ Prevent the loss of lubricating oil in machine parts, etc.

(2) Basic requirements for automatic packaging mechanical seals

The basic requirements of automatic packaging mechanical seals are tight and reliable, compact structure, easy manufacture, convenient maintenance and long service life.

(3) Automatic packaging mechanical sealing materials

Basic requirements of sealing materials: good preservation, high hardness, good flexibility, good flexibility, good timeliness, not suitable. Materials used for sealing include soft sealing materials and toilet sealing materials. Soft sealing materials: paper, paper, and oiled paperboard, which are identified or pressed into plate shape, are used as seals and sealants made of asbestos, artificial rubber, butyl rubber, hydrogen butyl rubber, elastic plastic and other materials.

Basic knowledge of automatic packaging mechanical seal sealing material: sealing material composed of aluminum or steel mesh.

When the assembler assembles some seals, pressure vessels and their sealing systems, in order to meet the technical requirements of leakage prevention, some parts of the automatic packaging machinery should be pressure tested before installation; After installation, the automatic packaging machine shall conduct air tightness test or pressure test on the whole system. Such as air box compressor, water system, power machine, refrigeration equipment, vacuum equipment and their systems. The purpose and significance of the test is to check whether the system has leakage, so as to repair it in time; Test the strength and performance of pressure parts. The tightness test of pressure parts includes pneumatic test (including vacuum test) and hydraulic test.

4) Seal classification

Automatic packaging mechanical seal can be divided into static seal and dynamic seal. The seal without relative movement between the sealing surface and the joint surface of the part is called static seal. Including non-metallic seals, non-metallic and metal combination seals, metal seals and liquid gasket seals.