Purple potato starch equipment parameters | purple potato starch equipment material

  Purple potato raw materials have a direct impact on product quality, yield and equipment service time, The process data discussed below are based on the following raw materials: purple potato suitable for the production of food grade starch (according to the Chinese national standard GB 8884-2017), its composition is as follows: the proportion of dry matter to total weight shall be 22
5%; the proportion of starch content to total weight shall be 16%; the proportion of protein content to total weight shall be 2
7%; the proportion of crude fiber to total weight shall be 1
9%; and the proportion of ash to total weight shall be 1
2%

1、 Stone removal, weeding and cleaning section of purple potato:
1
Overview:
  Soil, sand, weeds and other sundries are adhered to the surface of general raw materials (purple potato)
As these hard and metal impurities enter the file mill, they will cause damage to parts, and the opportunities for weeds and wood chips to enter the file mill will be blocked, which will affect the product quality and production process C work
Therefore, before the raw materials are broken, they must be treated to remove all kinds of impurities

2
Stone removal, weeding and sundries treatment:
  The company adopts wet stone and weed removal, that is, the raw material of purple potato is transported to the chute entrance through hslx-5000 screw conveyor, and water is injected at the entrance
A collection tank for sand, gravel, sediment and other sundries is set under the chute of 10-15m to discharge on time
The water drives the fresh potato to slowly flow into the soil bean pump and then transported to hscs-1200 stone remover through the potato pump
Due to low-speed rotation, the stones With the rotation, the sediment falls into the sand and gravel collection bin
When it rotates to the top, it falls into the sand and gravel discharge outlet due to the action of gravity and is discharged directly
The materials move forward slowly in the drum due to the internal spiral and naturally go to the next cleaning process
The sewage naturally flows to the sewage treatment tank for sedimentation treatment and reuse

In this process, the main control quality and production are: first, the control of water injection in the chute, and a butterfly valve dg80 is installed before water injection to adjust the water volume; Second, two butterfly valves dg125 are installed under the chute and the stone remover
The upper valve is normally open, and the sand and gravel are collected between the upper and lower valves
Generally, the discharge time is determined according to the amount of sand and gravel in the material
Third, the rotation speed of the conveyor and the stone remover is adjusted
Generally, a speed regulating frequency conversion motor is installed to adjust the speed, which can control the stone removal quality and production

3
Cleaning process:
  In this process, two xs-1200 squirrel cage cleaners in series are used for continuous cleaning
During washing, the tank is filled with washing water in advance, and the materials from the stone remover in the previous process flow to the potato washing machine by themselves
The materials are fed from one end of the drum, and the potato blocks constantly collide, rub and wash each other in the drum
At the same time, a screw is installed on the inner side of the drum to make the materials move forward slowly
After a few minutes, they reach the other end of the drum and are successively fished out of the water by the drum bucket
The washed sediment and dirt gather in the funnel, and the sewage valve is opened every 1 hour to discharge the sediment and dirt

4
Main quality and production control points:
  One is the control of water injection in the potato washing machine
A butterfly valve dg80 is installed before water injection to adjust the water volume; Second, two butterfly valves dg125 are installed under the potato washer, the upper valve is normally open, and the sediment is collected between the upper and lower valves
Generally, the discharge time is determined and adjusted according to the equal amount of sediment in the material; The third is the adjustment of the rotation speed of the potato washing machine
Generally, a speed regulating motor is installed to adjust the speed, which can control the cleaning quality and production