storing food in silo

storing food in silo

storing food in silo are not only containers for storing materials, but more importantly, they have relevant process functions.today we will introduce storing food in silo.

In the design of the storing food in silo, the material arch phenomenon is often involved in the silo. When the water in the silo is too high or when the material is not easy to flow, the arch phenomenon is easy to appear near the outlet of the hopper, which will seriously affect the flow of materials and lead to the unnormal supply of the material. In actual production, some silos can not be discharged well, thus the phenomenon of knot arch, serious blockage, and some pipe hops (also called rodent holes) are formed, so that most of the material in the silo can not be excluded and the storage function of the silo is greatly reduced. This phenomenon appears to a large extent because of the poor liquidity of material in the silo.

storing food in silo should be designed to meet the following three requirements: to store a specified number of storehouses; to have sufficient strength to withstand the pressure produced by the material in the silo and to force the external natural environment to be applied on the silo; the material can flow smoothly and evenly from the silo when discharging from the silo, and the speed of discharge is all Uniform control.

The storage of raw materials and the continuous supply of materials are a very important link in the material processing and logistics industry. When the material is arching near the outlet of the hopper, the material can not be discharged normally, resulting in the failure of the function of the silo, resulting in the production pause and even the production accident because of the knot arch. Sound production safety, food safety and enterprise economic benefits.

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How to improve storage anti arch capability and reduce storage accidents has become a major hot issue in the manufacture and production of silos nowadays.

The fluidity of materials in storing food in silo is an important index of bunker performance. In actual production, some silos can not be discharged well, thus the phenomenon of knot arch, serious blockage, and some pipe hops (also called rodent holes) are formed, so that most of the material in the silo can not be excluded and the storage function of the silo is greatly reduced. This phenomenon appears to a large extent because of the poor liquidity of material in the silo.

That is. According to the current classification, we can classify the flow patterns of the objects into two types: the overall flow and the central flow.

The so-called overall flow refers to: when discharging, all materials flow to the discharge port, there is no "dead zone", the material level drops evenly, and the discharge flow is stable and even. The ideal flow pattern of material flow should be the whole flow, which ensures that the material is unloaded uniformly in the order of advanced first out, and has the advantages of stable unloading rate, uniform discharge density, and basic storage time of storehouse and so on.

When the center flow is at the beginning of the unloading, only the material located at the top of the reservoir is in a moving state, and the material around it slides to the center, descends, and forms a central channel. In this way, only the material in the central part flows to the unloading port, and the part outside the "flow area" is "dead zone".

The flow sequence of the advanced post. Because the material near the silo wall may be stationary and not moving, the advanced warehouse material may come out later.

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storing food in silo

A rat hole is produced. If there is a funnel flow, if the material is sufficiently viscous, the material near the wall will not flow out.

Unbalance flow. In a funnel flow bin, the material around the material is collapsing over the end of the object itself, so the unloading is uneven. In addition, the impact force of the collapse material will further compact the material at the outlet of the hopper and make it arch.

Inrush. If the granularity of the material stored is very thin, it will vaporize when it collapses, so that its flow performance will be as good as that of the fluid, so that it will flow out from the outlet of storing food in silo.

Layered. When the hopper flow bin is discharged unevenly, the materials in the middle and surrounding areas are alternately outflowing.

There are two main factors affecting material fluidity: material properties and hopper shape.

The properties of material are the most important factors affecting the liquidity of the silo, which include the friction coefficient of the material and the inner wall in the stable flow, the static friction angle of the material and the silo wall; the compactness is related to the height of the material stored in the silo; if the material is very fine, the permeability of the material becomes worse and the material is in the material. A negative pressure is formed in the silo and an arch is formed at the outlet of the bin.

The shape of storing food in silo is mainly reflected in three aspects: hopper dip angle, hopper size and hopper shape. The hopper has a large dip angle and faster flow rate. The flow pattern is mainly a whole flow. When the hopper's dip angle is small, the speed of the outflow is slow, especially near the wall, forming a central flow.

Food storage tank

The smaller the outlet of the hopper, the smaller the flow rate of the silo, the possibility of arch and the more serious the arch in the lower part of the hopper near the hopper; the shape of the hopper outlet is also a factor affecting the fluidity of the material, and the circular exit is easier to arch than the rectangular outlet.