CN207779060U - A kind of grain drying device - Google Patents

Abstract

A grain drying device relates to the field of grain equipment. Including a drying tower, the drying tower is provided with a feed chamber, a primary drying chamber, a humidity detection chamber, a secondary drying chamber, and a discharge chamber that are connected to each other. The upper end of the feed chamber is an opening as a feed inlet. The lower part of the material chamber is provided with two partitions and the drying tower to form a conical discharge hopper with a small mouth end downward, and the outlet end of the conical discharge hopper is connected with a closed air valve; The chambers are correspondingly connected with hot air blowers. After the grain is dried in the primary drying room, it enters the humidity detection room. The humidity of the grain is detected by the humidity sensor first. The fan performs secondary drying. When it is detected that the grain reaches the set humidity requirement, the hot air blower in the secondary drying room is turned off, and the electric valve is opened to directly discharge the material through the secondary drying room and the discharge room, which greatly saves energy. Consumption, improve the drying quality.

Description

A grain drying device

technical field

The utility model relates to the field of grain equipment, in particular to a grain drying device.

Background technique

Food is a living organism, and moisture is the condition for its survival. However, if the water is too high, it will induce the growth of insects and microorganisms, which will easily cause food heating, fermentation, deterioration and a decrease in germination rate. Taking grain as an example, the moisture content of grain is 25-30% when it is harvested, and it needs to be reduced to a safe moisture content of 13-15% as soon as possible during storage. my country's grains are harvested 1 to 3 times a year and need to be stored for several years. However, in the process of grain production and grain drying, natural drying is easily restricted by the influence of weather and sites. With the large-scale promotion and application of grain harvesters and the rise of large grain growers, natural drying cannot meet the demand more and more, and grain drying equipment must be used.

At present, the most widely used circulating grain dryer includes a slowing chamber, a drying chamber, a hoist and an electric control part. Usually, diesel, coal, firewood, straw and electric heating are used as heat sources to generate hot air, and the hot air is heated in the drying chamber. It flows in the middle and contacts the grain during the flow, so as to take away the moisture in it and dry the grain.

In the prior art, the same hot air blower is used to dry the grains with different humidity. Effective drying cannot be guaranteed for grains with high humidity, and energy waste is caused for grains with low humidity. In addition, the grains are directly vertically The contact time between the hot air and the grain is short, and the contact between the hot air and the grain is uneven, resulting in uneven drying of the grain.

Utility model content

The purpose of the utility model is to provide a grain drying device, which can effectively solve the problems in the background technology.

The technical solution for achieving the above purpose is: a grain drying device, which is characterized in that: it includes a drying tower, and the drying tower is sequentially provided with a feeding room, a primary drying room, a humidity detection room, The secondary drying chamber, the discharge chamber, the upper end of the feed chamber is an opening as the feed inlet, and the lower part of the feed chamber is provided with two partitions and the drying tower to form a conical discharge hopper with a small opening end downward. , the outlet end of the conical discharge hopper is connected with an air closing valve; the primary drying room and the secondary drying room are respectively connected with hot air blowers; The outlet end of the chamber is provided with an electric valve.

Further, the humidity sensor is used to detect the humidity of the grain in the humidity detection room. When it is detected that the grain does not meet the set humidity requirement, the electric valve is opened and the hot air fan in the secondary drying room is started. When the humidity is required, open the electric valve and close the hot air blower in the secondary drying room.

Further, the structure of the primary drying chamber and the secondary drying chamber is the same, including a plurality of baffles that are arranged up and down in the drying tower, and the baffles are alternately arranged on the left and right, and are located on the upper side of the drying tower. The lower ends of the baffles are above the adjacent lower baffles.

The primary drying chamber is located at the lowermost deflector and the lower end faces the inlet of the humidity detection chamber, and the outlet of the temperature detection chamber faces the secondary drying chamber at the uppermost deflector.

Further, the outlet ends of the hot air blower face the upper end surfaces of the uppermost deflectors in the primary drying chamber and the secondary drying chamber respectively.

The utility model has the following effects:

After the grain is dried in the primary drying room, it enters the humidity detection room. The humidity of the grain is detected by the humidity sensor first. The fan performs secondary drying. When it is detected that the grain reaches the set humidity requirement, the hot air blower in the secondary drying room is turned off, and the electric valve is opened to directly discharge the material through the secondary drying room and the discharge room, which greatly saves energy. Consumption, improve the drying quality.

The primary drying chamber and the secondary drying chamber are respectively equipped with a plurality of slanting downward deflectors, and the deflectors are arranged alternately on the left and right, so that the grain flows slowly downward through the deflectors in turn, which improves the contact time between the grain and the hot air. Ensure the uniformity of grain drying.

Description of drawings

Fig. 1 is a schematic diagram of the mechanism of the utility model.

Detailed ways

As shown in Figure 1, the utility model includes a drying tower 1, which is sequentially provided with a connected feeding chamber 2, a primary drying chamber 3, a humidity detection chamber 4, and a secondary drying chamber from top to bottom. Chamber 5, discharge chamber 6, the upper end of the feed chamber 2 is an opening as a feed inlet, and the lower part of the feed chamber 2 is provided with two partitions 7 and the drying tower 1 to form a conical shape with a small mouth end downward. Discharge hopper 8, the outlet end of conical discharge hopper 8 is connected with air closing valve 9.

The primary drying chamber 3 and the secondary drying chamber 5 have the same structure, including a plurality of baffles 10 that are arranged up and down in the drying tower 1, and the baffles 10 are arranged alternately on the left and right, and are located The lower end of the flow plate 10 is above the adjacent lower flow guide plate 10 .

The primary drying chamber 3 and the secondary drying chamber 5 are respectively provided with hot air blowers 11 correspondingly. end face.

The lower end of the primary drying chamber 3 is located at the lowermost deflector 10 facing the inlet of the humidity detection chamber 4 , and the outlet of the temperature detecting chamber 4 is facing the uppermost deflector 10 of the secondary drying chamber 5 .

One end face of the humidity detection chamber 4 is an inclined plane, and a humidity sensor 12 is arranged correspondingly. The outlet end of the humidity detection chamber 4 is provided with an electric valve 13. The temperature sensor 12 controls the electric valve 13 through a controller, and the controller can adopt the prior art Commonly used in PLC or single-chip microcomputer, the temperature sensor 12 is connected to the input end of the controller, and the electric valve 13 is connected to the output end of the controller through a contactor.

After the grain is dried in the primary drying chamber 3, it enters the humidity detection chamber 4. The humidity of the grain is first detected by the humidity sensor 12. When it is detected that the grain does not meet the set humidity requirement, the electric valve 13 is opened and the secondary drying is started. The hot air blower 11 of the drying chamber 5 performs secondary drying. When it is detected that the grain reaches the set humidity requirement, the hot air blower 11 of the secondary drying chamber 5 is turned off, and the electric valve 13 is opened to directly pass through the secondary drying chamber 5 and The discharge chamber 6 is discharged.

Claims (4)

1. A kind of grain drying device, it is characterized in that: comprise drying tower, in the drying tower, be provided with feed chamber, primary drying chamber, humidity detection chamber, secondary drying chamber, The discharge chamber, the upper end of the feed chamber is an opening as the feed inlet, and the lower part of the feed chamber is provided with two partitions and the drying tower to form a conical discharge hopper with a small mouth end downward. The outlet end is connected with an air closing valve; the primary drying room and the secondary drying room are respectively connected with hot air blowers; electric valve. 2. A grain drying device according to claim 1, characterized in that the humidity sensor is used to detect the humidity of the grain in the humidity detection chamber, and when it is detected that the grain does not meet the set humidity requirement, the electric valve is opened and the When the hot air blower in the secondary drying room detects that the grain reaches the set humidity requirement, it opens the electric valve and turns off the hot air blower in the secondary drying room. 3. A grain drying device according to claim 2, characterized in that: the primary drying chamber and the secondary drying chamber have the same structure, including a plurality of obliquely arranged vertically in the drying tower. For the lower deflector, the deflectors are alternately arranged left and right, and the low end of the upper deflector is above the adjacent lower deflector; The primary drying chamber is located at the lowermost deflector and the lower end faces the inlet of the humidity detection chamber, and the outlet of the temperature detection chamber faces the secondary drying chamber at the uppermost deflector. 4. A grain drying device according to claim 3, characterized in that: the outlet ends of the hot air blower face the upper end surfaces of the uppermost deflectors in the primary drying chamber and the secondary drying chamber respectively.