Working principle of pea starch desande

The starch desander can remove the sand and other heavy impurities in the starch lotion processed by the screening unit
It is one of the indispensable equipment in the starch processing industry and can also be used to remove heavy impurities in other fluids
The equipment has the advantages of simple structure, design XJ and exquisite materials
The conical cyclone tube is made of sanitary mirror stainless steel plate, with high speed separation and high sand and impurity removal rate
It is the unique feature of hausen food machinery
During its operation, lotion (starch emulsion) is pumped into the cyclone desander and rotates at a high speed in the desander
Due to the centrifugal force, lighter materials (starch) are discharged through the overflow pipe, while heavier materials (sand, etc
) are discharged from the bottom along the inner wall of the conical cyclone pipe under the centrifugal force
The sand particles swirling downward are collected in the sand collecting bucket and discharged by manual or automatic sand discharge valve
The utility model relates to a starch milk desander
A plurality of primary desanders are composed of an upper Diyi cylinder and a lower transparent Diyi conical cylinder
The outer wall of the Diyi cylinder is provided with a feed inlet, the top end of the Diyi cylinder is connected with a discharge pipe, the discharge pipe on each Diyi cylinder is connected with the main discharge pipe, and the bottom end of the Diyi conical cylinder is connected with the primary return pipe; The secondary desander is composed of the upper second cylinder and the lower second conical cylinder
The outer side wall of the second cylinder is connected with the primary return pipe, the top of the second cylinder is provided with a secondary return port, the secondary return pipe is connected with the secondary return port, and the bottom end of the second conical cylinder is connected with the sand collector
The utility model adopts the conical cylinder of the transparent primary desander, and opens the secondary desander by observing whether the fine sand is mixed with starch milk when it spirals down to the primary return pipe along the inner wall of the conical cylinder of the primary desander, so as to save the production cost and improve the work efficiency
In the production of corn, potato and sweet potato starch, the desander cyclone is usually used to remove the fine sand contained in the starch milk
The separation principle of the desanding cyclone is that the materials to be separated enter the cylindrical part of the cyclone along the tangent direction at a certain speed for circular rotation, and the materials with different specific gravity obtain different centrifugal force
The larger centrifugal force than the large fine sand (heavy phase) is thrown to the outer layer of circular motion for external swirl, and the starch emulsion (light phase) with small specific gravity is in the inner layer of circular motion to form internal swirl
These materials move downward in a spiral shape, and the fine sand spirals down to the bottom outlet along the inner wall of the conical cylinder on the cyclone
The starch emulsion rotating and falling in the inner layer of circular motion is blocked by the underflow port and discharged from the top of the cyclone in the same upward motion
At present, in the desanding process of starch emulsion, multiple primary desanders and one secondary desander are used
The heavy fine sand (heavy phase) in the primary desander enters the secondary desander through the return pipe, and the heavy fine sand (heavy phase) in the secondary desander enters the sand collector
The conical cylinder at the bottom of the primary desander is made of steel, so the working condition of materials in the conical cylinder cannot be known from the surface of the desander, so the starch milk (light phase) with small specific gravity can not BZ process into the return pipe along with the fine sand (heavy phase), so it is necessary to open the secondary desander to remove the fine sand from the primary return
The primary desander and the secondary desander currently used are of the same specification, However, compared with the primary Desanding, most of the secondary desanders are fine sand, so there is no need to do too long movement like the primary desander to separate the starch milk
In this way, Jiangdi not only improves the processing efficiency, but also improves the production cost
In order to save the working cost of the secondary desander, the utility model solves the problem of opening the secondary desander through the observation of the secondary desander