Grain Storage Silos
Cement Storage Silos
Steel Silo Making Equipments

HOME >> NEWS >> Technical Feature of Lipp Steel Silos

It began in the early thirties with a grain storage silo. The initial stage of the silo is riveted, riveted steel sheet 6 ~ 10mm, and is very strong.

The second phase of the silo is welded storage silo. People with 4 ~ 10mm steel plate positions. Welding positions tightness well, due to the large wall thickness, strength, height can be built high, the service life of 50 to 80 years.
The third stage is a thin-walled steel silo warehouse. The mid-1950s, in order to meet the needs of bulk grain transportation started using thin-walled steel silo. The most common is the bolt assembly corrugated steel silo. The warehouse has a light weight, easy to assemble, cheap, mechanization, high degree of automation, high efficiency characteristics. Initially, due to the silo wall thin (0.4 ~ 4mm], the temperature difference between inside and outside the warehouse, plus the seal is not good enough reasons, people were skeptical of the security of stored grain, while the thin-walled steel silo suspected of life in ten years research and exploration practice gradually recognized these issues, particularly from the early 1970s were produced using standard materials have been large-scale development.

A steel silo features
1.1 Security grain storage
People on the silo wall is too thin, temperature, condensation phenomena, such as the presence of suspected cause damage to grain. Practice has proved that the thin-walled warehouse is not damaged grain. Usually pay attention to controlling food intake of water (usually no more than 13%). Although the thin wall, the outside temperature is easy to pass, but the food is a good insulator, only 15cm within the grain temperature change. Meanwhile absorbs heat quickly, heat fast. Because of temperature measurement devices inside the barn, so the control room can be very convenient testing. Once the grain temperature changes, can be properly addressed. Steel silo outside influence, the temperature difference is large, easy to condensation. So set the exhaust pipe and the installed fan in the warehouse roof is very necessary. Located in the warehouse at the end of mechanical ventilation, the laying of ventilation ducts. Implementation of effective measures to secure grain storage with removable fan ventilation. Mobile cooling ventilation can also be used to make food at a low temperature storage device under 5 ~ 15 ℃. Since people mastered this technique, the original plus some food processing techniques, such as cleaning, screening, grading, removal and management of a mature and complete way: such as the inverted position, the start position to turn food systems. Thin-walled warehouse stored grain is safe.
1.2 life
People granary life is generally only consider its physical life without regard to its technical life. Since the new technological revolution, it is recognized that the use of the cycle should be shortened, depending on the application life warehouse locations generally considered to be different from 20 to 50 years, thin-walled steel silo can be technical life needs. Changes to adapt to the requirements of the granary, bolt assembly type steel silo demolition will have convenient superiority. Tong confirmed by long practice, the use of standard materials and galvanized sheet surface heat treatment or other dual-south transit layer processing, will be able to meet the requirements of life. Galvanized corrugated sheet pressed into shape, will greatly enhance its strength and durable.
1.3 Materials
With the rapid development of the steel industry, steel production, quality and variety of other issues can meet jiancang requirements. Raw materials used in the current silo black steel, galvanized steel, aluminum, aluminum - nickel plate composite steel, coated steel, glass coating, enamel steel, stainless steel and so on.
1.4 sound technical support
In addition there is a corresponding silo silo outside of perfect technical support work. Such as machinery and equipment, electrical equipment, automation systems, detection devices, monitoring devices and technical services. Machinery and equipment include: transportation machinery, weighing machinery, cleaning machinery, mechanical ventilation, storage equipment. With these mechanical devices, will be able to complete the tasks required in the process.
In the control room will focus on the various control signals control panel face or computer, which can visually show the operating status of the device, simple quick and safe, reliable operation, the operator simply in the control room operator, you can manage the entire silos, improving efficiency.
Detection device is also fully equipped. Commonly used as raw grain quality and fast detection device testing device, temperature measurement devices, level devices, monitoring devices such as safety equipment to run devices.
Also make technical service work in management. High quality services that enable users to use thin-walled steel silo's no looking back for the gifted.
2, the type of steel silo
2.1 Lipp silo
Since the settlement of the use of safe sex, life, material and facilities issues, thin-walled steel silo has been rapid development. 1968 German SPD clear advantage of special equipment built with SNI-type double helix steel silo (referred to as Philips warehouse). 1969 built the first Lipp silo in Germany. Our eighties purchased Lipp permission to build warehouses and built the first Lipp silo.
Phillips SM-type equipment from molding machine, bending machine, uncoiler and carrying rack. Molding machine is mainly the raw material is bent and the preliminary molding surface. While the material is bent into the required diameter circular silo. Bending machine bending primarily with good material, seams rolled together on the open-book machine, able to board started. Give the correct diameter bearing bracket fixed silos. Lift up the warehouse attached to the body on top of it, it can carry spiral silo body. SM30 can bend sheet 1 .5-3mm's. SM40 can bend 2 ~ 5mm of material. SM35 and SM45 type is able to roll composite board unit. The construction of coil 495 mm wide bar away molding machine into the desired geometric shape, and then bent by bending machines, seams, forming a width of 30 ~ 40mm surrounded by a continuous spiral around the side of the silo ridges in the structure plays a role in strengthening the strength of the silo. At the same time stability and extend the life of the silo play a positive role. Philips diameter steel silo warehouse within 3.5 ~ 20m option, can be used in the 30m height below.
2.2 bolt assembly galvanized corrugated sheet steel silo
Early eighties, China has developed the first batch of bolt assembly corrugated steel silo. Prefabricated wall mainly by the pressure plate and B composed of steel studs. Ogura, establish short positions can not only set a single muscle or tendon (each corresponding to a wall stud). Okura, Takakura must set double tendons. And stud wall thickness to gradually thicken. Pressure plate from the top down to successive thickened. After punching process after the formation of corrugated, galvanized curved arc processes and procedures and other processes to complete prefabricated wall panels, after the package shipped to the warehouse or in the field.
3, reinforced concrete cylinder bank and the technical characteristics of thin-walled steel silo contrast
At present, many of China's steel silo applications in food processing plants. Flour mills, feed mills, refineries, food plants, starch plants, breweries, drying workshop and other raw materials database applications more, accounting for more than 95% of the entire silo number. In the warehouse with less. This is mainly plant materials library grain storage time is short, quick turnaround, requiring a high degree of mechanization, every day use, a high efficiency. Medium-sized plants are using reinforced concrete and thin-walled tubular steel silo library, in order to facilitate comparison, the list of a reinforced concrete silos and technical characteristics of thin-walled steel silo comparison table, reference for selection.
4, Philips and bolt assembly type steel silo steel silo Features Comparison
Food processing plants and more varieties of raw materials library, a single warehouse capacity should not be too large. Steel silo diameter, usually selected at 6 ~ 10m. Too much reduced as a single warehouse utilization.
Because the storage silo with a variety of relatively simple, large batch quantities, single warehouse capacity optional bigger, so the cost will be reduced. Technical characteristics of the two thin-walled steel silo comparison in Table 2.