How to carry out pneumatic conveying of corrosive or uncontaminable materials?
? In pneumatic conveying systems, we generally encounter many problems, among which the characteristics of materials are also an important reason to test whether there are unreasonable factors in the design of our entire system. For example, many materials contain corrosiveness, or food grade materials cannot be contaminated, etc. In this case, we usually need special stainless steel rotary feeders.
? Stainless steel rotary feeder is a device installed in pneumatic conveying, which unloads materials from the silo through the rotation of the impeller. We usually install it at the outlet of the air source, and spray the materials to our ideal dropping point in a dilute phase conveying manner through the airflow. The commonly used materials for stainless steel rotary feeders are 201 stainless steel rotary feeders, 304 stainless steel rotary feeders, and 316L stainless steel rotary feeders.
? 201 stainless steel rotary feeder 201 stainless steel has certain acid and alkali resistance, as well as high density, no bubbles or pinholes in polishing. As a rotary feeder, it can be used to transport corrosive materials with acidic or alkaline properties.
? 304 stainless steel rotary feeder is a common material in stainless steel, with a high temperature resistance of 800 ℃, good processing performance, and high toughness. It is widely used in the industrial and furniture decoration industries, as well as the food and medical industries. 304 stainless steel is a universal stainless steel widely used in the production of equipment and components that require good comprehensive performance (corrosion resistance and formability). In order to maintain the corrosion resistance of stainless steel, the steel must contain at least 18% chromium and at least 8% nickel.
? 304 stainless steel is the most widely used chromium nickel stainless steel. As a versatile steel, it has good corrosion resistance, heat resistance, low-temperature strength, and mechanical properties; Good hot workability such as stamping and bending, without heat treatment hardening phenomenon. Corrosion resistance in the atmosphere, if it is an industrial environment or heavily polluted area, it needs to be cleaned in a timely manner to avoid corrosion. Suitable for food processing, storage, and transportation. Has good processing performance and weldability.
? 316L stainless steel rotary feeder 316L stainless steel is commonly used in pulp and paper equipment, heat exchangers, dyeing equipment, film processing equipment, pipelines, materials for exterior buildings in coastal areas, as well as watch chains and cases for high-end watches. Production equipment for chemicals, dyes, papermaking, oxalic acid, fertilizers, etc; Photography, food industry, coastal facilities, ropes, CD poles, bolts, nuts.
(1) Cold rolled products have good glossiness and beautiful appearance;
(2) Due to the addition of Mo, the corrosion resistance, especially the pitting resistance, is excellent;
(3) Excellent high-temperature strength;
(4) Excellent work hardening properties (weak magnetism after processing);
(5) Non magnetic in solid solution state;
(6) Compared to 304 stainless steel, the price is higher.
? Juheng flexibly selects rotating feeders of different materials based on their characteristics for uniform feeding in positive pressure conveying, meeting the material conveying needs of different enterprises.