CN201830831U - Low-temperature circulating grain drier - Google Patents

Abstract

The utility model specifically relates to a low-temperature circulation grain dryer. The low-temperature circulation grain dryer includes a hot blast stove, a hoist and a drying host. The drying host is divided into upper, middle and lower layers. One side of the drying section is connected to the hot blast stove through a hot air pipe; the other side of the drying section is provided with an air outlet. The improvement lies in: the middle part of the drying section is provided with six "Y"-shaped grain passages up and down, and the grain passage board wall is a perforated sieve plate. The upper end of the grain channel is connected to the slow Su section, and the lower end is provided with a grain discharge wheel connected to the lower auger on the base; the two sides of the grain channel are sequentially provided with four air inlet channels and three row channels from left to right. air duct. The utility model can effectively control the dry quality of the grain and reduce the bursting rate of the rice. The design is reasonable in height and easy to install. At the same time, the hot blast stove can use biofuels such as rice husk and dry firewood, and has a wide range of applications.

Description

Low temperature circulation grain dryer

technical field

The utility model relates to the field of grain processing equipment. Specifically, it is a low-temperature circulation grain dryer.

Background technique

my country is a big grain-producing country, but in general, due to the inability to dry the harvested grain crops in time, the loss of grain is as high as 5 billion kilograms. Grain is a thermal material, and improper selection of drying speed and parameters can easily cause damage to the quality of the grain, such as rice bursting and corn stress cracking. When the current drying equipment dries the grain, it is easy to cause damage to the grain, and it cannot directly use biofuels for heating, and it needs to be modified before it can be used. Existing low-temperature circulation grain dryers have problems such as high temperature and inaccurate control of the bursting rate in the temperature control of the drying section. In addition, the height of the drying equipment is too high, exceeding the height of the general factory building, and the installation is inconvenient.

Contents of the invention

In order to solve the shortcomings of the above low-temperature circulation grain dryer, the structure of the drying section has been modified through a large number of experiments. A low-temperature circulation grain dryer with a new structure is designed.

The low-temperature circulation grain dryer includes a hot blast stove 3, a hoist 1 and a drying host. The drying host is divided into upper, middle and lower layers. The middle layer is provided with a drying section 6, and the upper layer of the drying section 6 is a slowing section. 5. The lower layer of the drying section 6 is the base; one side of the drying section 6 is connected to the hot blast stove 3 through the hot air pipe 2; the other side of the drying section 6 is provided with an exhaust fan 10; the drying section 6 Six "Y" type grain passages 11 are connected up and down in the middle part of the grain passage 11, and the upper end of the grain passage 11 is connected to the slow Su section 5. The lower end is provided with a grain discharge wheel 12 connected to the lower auger 9 on the base; Four air inlet channels 7 and three air exhaust channels 8 are sequentially spaced from left to right on the side.

The hoist 1 is positioned at one side of the drying main frame, its lower end is connected with the lower auger 9, and the upper end is connected with the upper auger 4 positioned at the top of the drying main frame.

The 11 plate walls of the grain channel are perforated sieve plates with a wall thickness of 1.5 millimeters, and the punching diameter is 2 millimeters.

The beneficial technical effect of the utility model is.

1. The structure of the drying section has been modified to increase the area and shape of the drying section. When the temperature of the hot air is ≤60 degrees, the temperature of the drying section is 35-40 degrees, which can effectively control the quality of the grain and reduce the loss of rice. Waist rate.

2. The speed of the grain discharge wheel is controlled by frequency conversion, which can conveniently and evenly adjust the flow speed of the grain in the drying section to ensure that the grain is evenly dried.

3. The height is designed according to the height of the general existing factory building, and it is easy to install. The hot blast stove can use biofuels such as rice husk and dry firewood, and is suitable for grain depots, grain stations, grain and feed processing plants, etc.

Description of drawings

Fig. 1 is the structural representation of the utility model.

FIG. 2 is a top view of FIG. 1 .

FIG. 3 is a side view of FIG. 1 .

Fig. 4 is the A-A view of Fig. 1 (the schematic diagram of the structure of the drying section and the base).

Detailed ways

Below in conjunction with accompanying drawing and concrete implementation the utility model is described in further detail.

Example:

Referring to Fig. 1 and Fig. 2, the low-temperature circulation grain dryer includes a hot blast stove 3, a hoist 1 and a drying host. The drying host is divided into upper, middle and lower layers. The upper layer of 6 is the slow su section 5, the lower layer of the drying section 6 is the base; one side of the drying section 6 is connected to the hot blast stove 3 through the hot air pipe 2; the other side of the drying section 6 is equipped with an exhaust fan 10; The middle part of the drying section 6 is provided with six "Y" shaped grain passages 11 up and down, and the plate wall of the grain passages 11 is a perforated sieve plate with a punching diameter of 2 mm. The upper end of the grain passage 11 is connected to the slow-suction section 5, and the lower end is provided with a grain discharge wheel 12 connected to the lower auger 9 on the base; the two sides of the grain passage 11 are sequentially provided with four air inlets at intervals from left to right. Road 7 and three exhaust channels 8.

The hoist 1 is positioned at one side of the drying main frame, its lower end is connected with the lower auger 9, and the upper end is connected with the upper auger 4 positioned at the top of the drying main frame.

Working principle: First, set the drying temperature and moisture according to the grain. The grain is loaded into the dryer through the grain conveying hoist 1. When the grain is full, the alarm will be given when the grain is full, and the feeding will be stopped to start drying. The grain will be dried by clean dry hot air through the drying section 6. The hot air passes through the grain in the grain channel 11 through the air inlet channel 7, takes away the grain moisture, passes through the air exhaust channel 8, is discharged through the exhaust fan 10, and then enters the slowing section 5 through the lower auger 9 and the hoist 1, and is dried. Drying——Slow recovery and reciprocating, when the moisture content of the grain reaches the set requirement, it will automatically discharge the material.

Claims (3)

1. The low-temperature circulation grain dryer includes a hot air stove (3), a hoist (1) and a drying host. The drying host is divided into upper, middle and lower layers. The middle layer is equipped with a drying section (6). The upper layer of the section (6) is the slowing section (5), and the lower layer of the drying section (6) is the base; one side of the drying section (6) is connected to the hot blast stove (3) through the hot air pipe (2); The other side of the drying section (6) is provided with an exhaust fan (10); it is characterized in that: the middle part of the drying section (6) is provided with six "Y"-shaped grain passages (11) up and down, and the grain passages (11 ) is connected to the slow su section (5), and the lower end is provided with a grain discharge wheel (12) connected to the lower auger (9) on the base; the two sides of the grain passage (11) are sequentially spaced from left to right There are four air inlet ducts (7) and three air exhaust ducts (8). 2. The low-temperature circulation grain dryer according to claim 1, characterized in that: the hoist (1) is located on one side of the main drying machine, its lower end is connected to the lower auger (9), and its upper end is connected to the top of the main drying machine. The upper auger (4) is connected. 3. The low-temperature circulation grain dryer according to claim 1, characterized in that: the plate wall of the grain channel (11) is a punched sieve plate with a wall thickness of 1.5 mm, and a punching diameter of 2 mm.

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