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The first generation of cement concrete steel base plate steel base plate steel storage silo steel storage silo Design Institute from the general to the present the company's fifth-generation "decanter full discharge-proof steel steel storage silo", the development of large steel steel storage silo more than 100 years of history. The first widely used in foreign countries, the application of steel grain storage silo warehouse - West Germany Silo originated in the early 20th century, the time is divided according to their production methods to produce, and its development has gone through the steel storage silo riveted or welded, assembled steel steel storage silo, spiral undercut type steel storage silo (and fame Pu steel storage silo or spiral steel storage silo), sedimentation lap welded steel base, sedimentation fully discharge riot steel steel storage silo five phases. The late 1970s, the food industry in a foreign country, a large steel base has almost replaced any type of grain. Currently, the U.S. 95% of the grain using a large steel steel storage silo.
China's large steel steel storage silo technology development started late. 1982, Heilongjiang Province, Honghe Farm introduce galvanized corrugated sheets fabricated steel base from the United States, is the emergence of the earliest large modern steel steel storage silo group. In the 1990s, the construction of large steel steel storage silo has achieved unprecedented development. In the 21st century, Jiangsu Shepherd Group introduced the United States assembled a large steel steel storage silo full set of technology, special equipment production lines, according to the foreign advanced technology, design software, production standards, in the digestion and absorption basis, the innovation and development, beginning in large quantities production, production, installation of large steel fabricated base, the strength of large steel libraries, performance, security has the reliability and large steel base as a large number of export products, which represent today's China's major steel production base, production, international horizontally mounted, is the leader of a large steel fabrication and installation of the steel storage silo. Currently, the steel storage silo can store large steel granular, powder, liquid, etc., in the fields of industry and agriculture, food, brewing, coal, building materials, urban and environmental industries and other fields are widely used.
The first generation of steel steel storage silo
The first generation of steel companies and the technical characteristics of the steel storage silo on behalf of the first generation of steel steel storage silo is in accordance with the architectural entity "reinforced concrete cylinder steel storage silo design specifications GBJ77-85" design, the steel storage silo or libraries body wall is concrete or metal rivet forming, it is the last the rapid development of post-industrial product century, due to the technical direction of the problem, is not suitable for promoting.
The first generation of steel steel storage silo features: small volume, hundreds or thousands of tons, with little more than ten thousand tons level.
The second-generation steel steel storage silo
The second generation of steel as well as the technical characteristics of the steel storage silo on behalf of the enterprise database known as the second generation of steel fabricated steel base, technical features are: the performance characteristics of a fabricated steel silo, hot galvanized plate, all parts are standard components, with replaceable of extended service life. 2, can transform, demolition, especially for rental space is ideal for users. 3, steel silo height, diameter can be selected within a wide range.
Although the second-generation steel structure design and application libraries have more traditional concrete steel storage silo greatly improved, but the technology is still at the top of the foundation of traditional mechanical structure, electrical control, inevitably there are technical flaws: material storage, a steel storage silo, stored procedures, lack of intelligent control, backward technology, human intervention factors, can not understand the custody, run live, can not guarantee long-term stability of the storage material is not bad.
The third generation of large steel steel storage silo
The third generation of large steel companies and the technical characteristics of the steel storage silo on behalf of, the technical features are: a certain width coil uncoiler into the molding machine from rolling into the desired geometry, and then through the bending machine bending, seams, Wai the outer tube is formed of a base width of 30mm-40mm, the continuous spiral around the ridges serve to strengthen the cartridge in the configuration repository. For two materials of different materials, construction equipment Silo can achieve double-bend construction. Its good overall performance, and long life. Spiral undercut five times the thickness of the base material, greatly strengthened the anti-carrier capability steel storage silo body, its stability and strength of life is better than other large steel steel storage silo. Airtight performance, versatile: seams that bend formed by special equipment, particularly good sealing performance. Storage granules. Powder, avoid food when the humidity outside influence within their materials, while meet insecticide fumigation process requirements, and can also be used to store liquid object short construction period, low cost: the weight of the body is the equivalent of Silo Silo with the volume of concrete sixth, greatly reducing the cost of building a database on the basis of cost, and a very short period (compared to the same volume of concrete cylinder bank). Land area is small, easy to manage, a large steel storage silo better than other large steel plate steel storage silo is still in its height and diameter can be arbitrarily selected within the maximum range, the spacing can be as small as 50cm, covering less adaptable.
The fourth generation of large steel steel storage silo
The fourth generation of large steel companies and the technical characteristics of the steel storage silo on behalf of the fourth generation of a large steel steel storage silo called "fourth-generation computer-controlled large warehouse steel steel storage silo", in fact, in strict accordance with the technical schools it should be called "lap welded steel decanter steel storage silo" developed a complete set of discharge process and form the basis of a large steel cement silo make cement factory finished products, finished products to build large cement powder station, large transit libraries with a total investment of about 55 percent to save money. You can build 10,000 tons -10 tons of large steel steel storage silo. Diameter of ten meters to tens of meters, the steel storage silo can be used for cement steel, steel steel storage silo ash, cement clinker steel steel storage silo. The fourth generation of intelligent computer control of large steel steel storage silo, using the computer control technology, the steel storage silo can flow rate, temperature, humidity, pressure, flow, level, stock inventory, and many other elements of automated testing materials into the steel storage silo a steel storage silo full intelligent control, quality of materials, steel storage silo and other elements of the distribution is controlled by the host automatically adjust to the best state, to upgrade the existing technical conditions under blind management to computer-based intelligent control and scientific management, it has large reserves, investment Province invested 200 yuan ton storage below, short construction period (put into operation within three months), good overall performance, environmentally friendly energy, saving land, an investment available for 70 years and so on.
The fifth generation of large steel steel storage silo
The fifth generation of large steel companies and the technical characteristics of the steel storage silo on behalf of the fifth generation of large-scale steel steel storage silo called "sedimentation fully discharge Riot steel steel storage silo", the use of "settlement decompression seismic building infrastructure (Patent No. 200920351236.4)," Multifunctional conical large repository (patent No. 200920279367.6) and other 23 patented technologies, especially the powder reservoir completely discharge system, structural building foundation bearing capacity increase any geological conditions, the high latitudes metal reservoir wall to reduce fatigue steel storage silo use of the method for the prevention of violence libraries and other key technologies to improve the discharge rate of the powder reservoir to improve the steel storage silo foundation bearing capacity of large steel building, the life of a large steel high latitudes steel storage silo was extended to the theoretical design life.



First, the product competitive environment analysis:
No. Project Analysis
Between a low-end enterprise competition in the field of steel silo, the lower the degree of product differentiation. The high end automation products, its design and development are directed style, technology and processes can not be copied, so a high degree of differentiation, more competitive.
Two alternatives studied because of automation products with unique performance, cost and quality advantages, within the high-end area of cement, fly ash, food storage, etc., in the future for a long time still an irreplaceable role.
3 raw material procurement company in the bargain, for the same brand of choice 3-5 furniture has a strong competitive suppliers through open bidding and multiple rounds of bidding procurement manner, all the processes transparent and accept the direct leadership and oversight of the company. Therefore occupies a strong initiative in the price of raw materials.
After four winning projects bargaining power of customers, the company responsible for the project people in the co-innovation, together with the original program jointly improve the re-optimization and design projects with customers and make additions in the professional technical and technological level, the customer is more passive and bargaining limited capacity.
5 price competition from project design, production and installation, is the integration of the whole project contracting, even with low bid may be, the company has gained from each project monopoly profits. The company has a significant price competition and profit advantages.
6 marketing company in the market development process, instead of waiting until the project has been bid know, but by the institute in the early to know what the project has been designed, the company pursuant then project tracking information until the project successful so far.
7 potential entrants in the field of automation products for high-end, due to some technical obstacles, there is a corresponding high barriers to trade in for a long time, potential entrants a limited impact on the industry.

Second, the process route:
Large steel steel storage silo effective diameter of up to ten meters ~ tens of meters, high aspect ratio control in 1:1-1: 1.5. steel storage silo body is cylindrical, hemispherical shape for the top of your steel storage silo, the steel storage silo wall with steel frame forms a peripheral welded steel plate; ball missing a special design, with reliable carrying capacity.
1), the amount of powder materials storage: a single storage capacity 100,000 tons, a single storage capacity of 5,000 tonnes visible -10 tons, while the formation of a total storage capacity of several hundred thousand tons of storage steel storage silo group.
  2), process layout flexible, according to the site conditions and customer requirements can be flexibly arranged, the expected number and discharge conveyor corridor be designed according to the database size, material characteristics.
3), material storage: mechanical, pneumatic material storage methods available, depending on each plant can hoist warehousing, storage or chute pneumatic conveying pipe storage, etc..
4), a steel storage silo method: multi-point discharge
Our company has developed a large steel steel storage silo using gravity flow and air flow combination of force, so that the steel storage silo first produced powder fluidized state, the bottom discharge chute angle greater than the angle of the flow of material, the logistics flows discharge trough , and then through the center of the room were homogenized, the steel storage silo sent by the transmitter and the District pipeline outside, so even if the reservoir bottom area is large, but also to ensure emptying rate above 95%. Single-pipe discharge capacity of up 100-800T / H, according to customer requirements outbound traffic be designed to meet customer needs.
Third, the steel silo technical points
1: Can you solve the cement wall in steel internal steel storage silo database and humid air temperature difference caused by the cement harden, physical indicators fell technical barrier. The scope of the design of effective control in the steel steel storage silo environment temperature of minus 50 ℃ to 160 ℃ temperature, cement steel steel storage silo in the physical indicators unchanged. 2: solve the problem of leakage of cement and water in the bottom plate steel storage silo database. This design uses the steel storage silo bottom outer polymer waterproof materials and other technologies to the bottom of the steel storage silo secondary reinforcement steel waterproof, steel and metal plates above the bottom steel storage silo database steel storage silo using corrosion-resistant waterproof material basis for the final barrier waterproof, steel steel storage silo foundation and steel storage silo at the end of the use of concrete full waterproof, impermeable concrete. The scope of the design of a controlled prevention: waterproof grade level, grades 1-3 million tons of steel steel storage silo leakage between P8-P12, libraries 5-20 million tons of steel between P12. 3: solve the problem of cement in full discharge plate steel storage silo, the design uses several of our patented technology, to ensure that the steel steel storage silo on-demand, on-time requirements and smooth the material out of the material, the material needs completely. The design specifications: the material emptying rate of 1-3 million tons of steel steel storage silo of more than 99.9%, the steel storage silo 5-20 million tons of steel more than 99.99%.
Four large steel silo advantages:
1, the province is 50% of traditional investment positions, tons of storage cement investment around 2000 yuan / ton.
2, large reserves: single storage volume 1-5 ten thousand tons
2, short construction period, the completion of the general three months or so.
3, stored safely, theoretical proof, cement storage warehouse within 2 years of the objectives of fundamental change.
4, craft perfect, steel silo, a steel storage silo rate reaches 95%.
5, energy saving, emission reduction, an alternative multi-database steel storage silo steel storage silo expenditure cuts power equipment, the dust emission point cut to a minimum.
6, large reserves: single warehouse storage 1-10 tons.
7, all of the good results, the steel storage silo itself homogenization, reducing power consumption homogenization process.
8, add enterprise efficiency, it is a long time investment in tangible assets to benefit.
9, for the storage of cement cold season, ensuring peak season use, the continuation of production of cold season.
10. save the kingdom sites, to eliminate the risk of pollution, easy storage applications.

Fifth, the performance comparison
   Steel silo with a light weight, on the basis of low demand "(an average of half of reinforced concrete silo construction period), small footprint, the provincial labor and low cost, but also in vivo using double-wall outer wall with the warehouse processing two different materials integrally, the construction cost can be reduced. Meanwhile, steel silo construction not affected by season, weather and other factors, companies can use to quickly achieve good economic returns. According to the actual calculation, compared with the same capacity of reinforced concrete silos, the amount of steel reinforcement steel silo and its amount is almost equivalent to savings of about two-thirds of the amount of cement; concrete silo due to weight and height requirements of its base cost, high total investment, to be higher than 15% to 40%, both of which cost analysis are shown in Table 3-1.
Fabricated steel silo storage capacity, high degree of automation machinery, management tends to be scientific, rationalization, network, can effectively reduce operating costs, and removable partial replacement, easy to operate. On the same storage capacity, the concrete silos small diameter, high altitude, relatively high grain layer height, grain storage management more difficult (such as difficult ventilation or ventilation uneven reach grain storage ventilation; fumigation difficulty is to use PH3 fumigants are difficult to penetrate and reach the deeper layers of grain effect; grain layer of various parts of the food quality sampling detection more difficult, etc.), maintenance is more difficult, especially after prolonged use, prone to cracks and other damage to insulation and vapor barriers phenomenon, difficult to repair, maintenance will be more difficult.
Six, cost comparison
   In operating costs, for example, to install package WAREHOUSE grain and bulk grain silos installed two different positions
Granary job type comparison of the measured data to unload a list of 40 train carriages 2400T calculation, direct operating costs: WAREHOUSE was 13.12 yuan / t, silos 0.93 yuan / t, steel silos generally less than 0.93 yuan / t , or even lower, operating costs are relatively reinforced concrete warehouse slightly lower (some of the data cited China grain Logistics Research and Training Center in July 2000 published "food move down process"). To save the custody of 37 kilograms of rice a year, for example, custody fees: silo 2.94 yuan / jin and conventional storage needs 13.6 yuan / jin; run incidentals (out of warehouses power consumption, warehouse costs, human): steel silo 3.93 yuan / jin and conventional storage needs 4.78 yuan / jin.