CN103798554A - Method for drying sweet potato leaves - Google Patents

Abstract

The invention discloses a method for drying sweet potato leaves. The method comprises the following steps: 1, exposing the sweet potato leaves in the sun for 1-2 hours; and 2, putting the sweet potato leaves into a feeding hole, enabling the sweet potato leaves to pass through shifting strips (8) on a first roller (2) through a first conveyor belt (1), and enabling large impurities to fall in a sundry slot (3) formed just below the first roller (2), wherein the eight shifting strips (8) are arranged on the first roller (2) along the axial direction at equal intervals being 2cm and are averagely arranged in the same plane, the length of each shifting strip is 3cm, and the diameter of the first roller (2) is 3cm.

Description

A kind of method of drying pachyrhizus leaf

Technical field

The present invention relates to crops storage field, particularly a kind of method of drying pachyrhizus leaf.

Background technology

Pachyrhizus leaf fibre content is high.Every 100 g of pachyrhizus leaves, heat only has 30 kilocalories, and dietary fiber has 3.1 g.Pachyrhizus leaf fibre matter is many, and cellulosic is high, except being with in vitro inner cholesterol.Mix chicken feed, can improve the cholesterol of eliminating in chicken body, improve the quality of egg or meat.Pachyrhizus blade should toast after sending into drying chamber continuously, until dry, heating can not be interrupted, and temperature can not be fluctuated, and easily quality declines.

Summary of the invention

In order to improve the quality of drying pachyrhizus leaf, the invention provides a kind of method of drying pachyrhizus leaf.

Technical scheme: step 1: pachyrhizus leaf is tanned by the sun 1～2 hour in the sun;

Step 2: pachyrhizus leaf is put into feeding mouth, by the first conveyer belt (1), through dialling bar (8) on the first roller (2), bulk impurity fall into the first roller (2) under be provided with foreign material groove (3); Described the first roller (2) arranges 8 every 2 centimetres vertically and dials bar, dials bar for 8 and on average arranges in a plane; Dialling bar length is 3 centimetres; The diameter of the first roller (2) is 3 centimetres;

Step 3: pachyrhizus leaf enters scour trough (4) by the bar of dialling on the first roller (2), scour trough (4) is by top to bottom inclination 35 degree, two sidewalls and the bottom surface of scour trough (4) are evenly distributed delivery port, evenly bath, the shaking device of scour trough (4) bottom surface shakes simultaneously, vibration frequency is 30 times/second, by the impulse force of current and the effect of vibrations, pachyrhizus leaf is slowly by scour trough (4), arrive second roller (5) of the bottom of scour trough (4), after cotton brush being axially set by the second roller (5), enter drip pan (6);

Step 4: pre-heating drying room temperature is raised to 30 ℃, the oven dry of drip pan (6) being put into hothouse (7) cuts off (10) above, and the spacing of drying partition (10) is 20 centimetres; Opening draught fan (12) ventilates by air vent (11); Heating rate remains on 1 hour and heats 1～3 ℃; 45 ℃ of constant temperature toast 3 hours, open moisture discharging opening or ventilating fan; Heat up, 55 ℃ of constant temperature toast 4～5 hours, and moisture discharging opening (8) and humidity discharging fan were closed after (9) 1～2 hours; Heat up, 65 ℃ of constant temperature toast 1 hour.

Beneficial effect: the pachyrhizus leaf water content that this method is dried is no more than 3%; Pachyrhizus leaf keeps original nutriment, keeps natural colour.

Accompanying drawing explanation

Fig. 1 is the structural representation of drying plant of the present invention.

The specific embodiment

below in conjunction with accompanying drawing, the present invention is elaborated.

Step 1: pachyrhizus leaf is tanned by the sun 1～2 hour in the sun;

Step 2: pachyrhizus leaf is put into feeding mouth, by the first conveyer belt (1), through dialling bar (8) on the first roller (2), bulk impurity fall into the first roller (2) under be provided with foreign material groove (3); Described the first roller (2) arranges 8 every 2 centimetres vertically and dials bar, dials bar for 8 and on average arranges in a plane; Dialling bar length is 3 centimetres; The diameter of the first roller (2) is 3 centimetres;

Step 3: pachyrhizus leaf enters scour trough (4) by the bar of dialling on the first roller (2), scour trough (4) is by top to bottom inclination 35 degree, two sidewalls and the bottom surface of scour trough (4) are evenly distributed delivery port, evenly bath, the shaking device of scour trough (4) bottom surface shakes simultaneously, vibration frequency is 30 times/second, by the impulse force of current and the effect of vibrations, pachyrhizus leaf is slowly by scour trough (4), arrive second roller (5) of the bottom of scour trough (4), after cotton brush being axially set by the second roller (5), enter drip pan (6);

Step 4: pre-heating drying room temperature is raised to 30 ℃, the oven dry of drip pan (6) being put into hothouse (7) cuts off (10) above, and the spacing of drying partition (10) is 20 centimetres; Opening draught fan (12) ventilates by air vent (11); Heating rate remains on 1 hour and heats 1～3 ℃; 45 ℃ of constant temperature toast 3 hours, open moisture discharging opening or ventilating fan; Heat up, 55 ℃ of constant temperature toast 4～5 hours, and moisture discharging opening (8) and humidity discharging fan were closed after (9) 1～2 hours; Heat up, 65 ℃ of constant temperature toast 1 hour.

Claims (1)

1. a method of drying pachyrhizus leaf, comprises the following steps:

Step 1: pachyrhizus leaf is tanned by the sun 1～2 hour in the sun;

Step 2: pachyrhizus leaf is put into feeding mouth, by the first conveyer belt (1), through dialling bar (8) on the first roller (2), bulk impurity fall into the first roller (2) under be provided with foreign material groove (3); Described the first roller (2) arranges 8 every 2 centimetres vertically and dials bar, dials bar for 8 and on average arranges in a plane; Dialling bar length is 3 centimetres; The diameter of the first roller (2) is 3 centimetres;

Step 3: pachyrhizus leaf enters scour trough (4) by the bar of dialling on the first roller (2), scour trough (4) is by top to bottom inclination 35 degree, two sidewalls and the bottom surface of scour trough (4) are evenly distributed delivery port, evenly bath, the shaking device of scour trough (4) bottom surface shakes simultaneously, vibration frequency is 30 times/second, by the impulse force of current and the effect of vibrations, pachyrhizus leaf is slowly by scour trough (4), arrive second roller (5) of the bottom of scour trough (4), after cotton brush being axially set by the second roller (5), enter drip pan (6);

Step 4: pre-heating drying room temperature is raised to 30 ℃, the oven dry of drip pan (6) being put into hothouse (7) cuts off (10) above, and the spacing of drying partition (10) is 20 centimetres; Opening draught fan (12) ventilates by air vent (11); Heating rate remains on 1 hour and heats 1～3 ℃; 45 ℃ of constant temperature toast 3 hours, open moisture discharging opening or ventilating fan; Heat up, 55 ℃ of constant temperature toast 4～5 hours, and moisture discharging opening (8) and humidity discharging fan were closed after (9) 1～2 hours; Heat up, 65 ℃ of constant temperature toast 1 hour.

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