CN207907659U - Grain drier - Google Patents

Abstract

The utility model discloses a grain dryer, which comprises a dryer body. The dryer body consists of a temporary storage chamber, a drying chamber and a discharge chamber from top to bottom in sequence. The lower part of the temporary storage chamber is provided with preheating blind pipes at intervals. There are air outlet holes on the side wall of the preheating blind pipe, and the bottom of the preheating dead pipe is connected with the external hot air source through the guide pipe; the drying chamber is alternately provided with air inlet channels and air outlet channels, and the air inlet channels and outlet channels are arranged alternately. The side walls of the air channel are all side walls of the orifice plate, and a drying channel is formed between the adjacent air inlet channel and the air outlet channel; the side wall of the discharge chamber is provided with a fan air inlet, and the discharge chamber opposite to the fan air inlet There is an air outlet on the other side of the chamber, and a material shifting mechanism is arranged in the discharge chamber, and its discharge port communicates with the feed port on the top of the temporary storage bin. The utility model has the advantage that the preheating blind pipe, the hot air channel and the air-drying performance of the discharge chamber are combined to act on the grain, which improves the drying efficiency and grain drying capacity, reduces energy consumption, and saves drying cost.

Description

grain dryer

technical field

The utility model relates to grain drying equipment, in particular to a grain drying machine.

Background technique

Grains need to be dried after harvesting to achieve the purpose of reducing grain moisture, killing insect eggs, and improving grain storage quality. At present, hot air drying is mostly used for grain drying. By applying hot air to fully contact the grain, the moisture of the grain can be evaporated and the uniformity of grain drying can be ensured. The traditional grain dryer consists of an upper temporary storage bin, a lower drying chamber and a bottom discharge hopper. The grain moves from top to bottom in the dryer through its own gravity, and a deflector is set above the drying chamber. The grain continues to flow downward from the gap between the deflectors, the hot air in the hot air channel blows directly to the grain, the dried humid air flows out through the air outlet of the cold air channel, and the grain dried by the hot air continues to fall into the drying chamber. The discharge chamber is sent to the dryer again by the lifting equipment for drying. With the above-mentioned technical scheme, only the hot air in the drying room is used to dry the grain, and each grain bin needs to be dried at least 8 times in order to control the moisture content in the grain within a safe range, the drying efficiency is very low, and the energy consumption is high. Greatly increased the storage cost of grain.

Contents of the invention

The purpose of the utility model is to provide a grain dryer with low energy consumption, high drying efficiency and effective cost saving.

In order to achieve the above object, the utility model takes the following technical solutions:

The grain dryer described in the utility model includes a dryer body, the dryer body is a temporary storage bin, a drying chamber, and a discharge chamber from top to bottom, and the temporary storage bin, drying chamber, and discharge chamber The chambers are connected in sequence, and the lower part of the temporary storage warehouse is provided with a plurality of upwardly extending preheating dead legs at intervals. The side walls of the plurality of preheating dead legs are respectively provided with a plurality of air outlet holes, and the preheating dead legs The bottom of the bottom is connected with the external hot air source through the guide tube; the air inlet channel and the air outlet channel are alternately arranged in the drying chamber, and the air inlet of the air inlet channel is set on the front side wall of the drying chamber. The air outlet of the air outlet channel is set on the rear side wall of the drying chamber, the side walls of the air inlet channel and the air outlet channel are the side walls of the orifice plate, and a drying channel is formed between the adjacent air inlet channel and the air outlet channel; A fan air inlet is provided on one side wall of the discharge chamber, an air outlet is provided on the other side of the discharge chamber opposite to the fan air inlet, and a material pulling mechanism driven by a power source is arranged in the discharge chamber. The discharge port of the discharge chamber communicates with the feed port at the top of the temporary storage bin through a lifting device.

The utility model has the advantage of comprehensively utilizing the air-drying performance of the preheating blind pipe, the hot air channel and the discharge chamber to act on the grain, that is, the preheating dead pipe is used to initially dry the grain, and then further dried in the drying room, and finally the air blower is used to dry the grain. Air-drying the grain in the discharge chamber greatly improves the drying efficiency (the drying efficiency is more than doubled), which in turn greatly increases the grain drying capacity, and at the same time reduces energy consumption and saves drying costs.

Description of drawings

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

Detailed ways

As shown in Figure 1, the grain dryer described in the utility model includes a dryer body, which is a temporary storage bin 1, a drying chamber 2, and a discharge chamber 3 from top to bottom. The storage bin 1, the drying chamber 2 and the discharge chamber 3 are connected in sequence, and the lower part of the temporary storage bin 1 is vertically provided with a plurality of preheating blind pipes 4 extending upwards to prevent grain from falling into the preheating dead pipes 4 , the sidewalls of a plurality of said preheating blind pipes 4 are evenly spaced with a plurality of air outlet holes, and the bottom of the preheating dead pipes 4 communicates with an external hot air source through a draft tube 5; said drying chamber 2 The inner intervals are alternately provided with air inlet passages 6 and air outlet passages 7, the air inlet of the air inlet passage 6 is set on the front side wall of the drying chamber 2, and the air outlet of the air outlet passage 7 is opened on the drying chamber 2. On the rear side wall of the air inlet channel 6 and the air outlet channel 7, the side walls of the air inlet channel 6 and the air outlet channel 7 are all orifice side walls, which are convenient for air inlet or outlet, and a drying channel is formed between the adjacent air inlet channel 6 and the air outlet channel 7. The hot air is blown from the side wall of the air inlet channel 6 to the grain in the drying channel 8, and the exchanged air with moisture is discharged from the air outlet channel 7, and the tops of the air inlet channel 6 and the air outlet channel 7 are equipped with guides plate 10, so that the food flows into the drying channel from the deflector 10; the side wall of the discharge chamber 3 is provided with a fan air inlet 8 (for installing the air outlet pipe of the fan), which is connected with the fan air inlet 8 The opposite side of the discharge chamber 3 is provided with an air outlet 9, and the grain is further air-dried and dried by the fan to improve the drying efficiency; ), the discharge port of the discharge chamber 3 is connected with the feed port on the top of the temporary storage bin 1 through the lifting equipment, which is convenient for recirculation and drying; The feed port is transported to the grain storage bin by the conveying equipment for storage.

When in use, the grain falls down from the top of the temporary storage bin 1 by its own weight, and the external hot air source supplies hot air to the preheating blind pipe 4 through the guide pipe 5, and the hot air is blown to the preheating blind pipe 4 through the outlet hole. The grain in pipe 4 is used for preliminary drying of the grain; the grain continues to fall, and flows to the drying channel through the function of the deflector in the drying chamber 2, and the hot air is blown from the side wall of the air inlet channel 6 to the grain flowing through the drying channel. The grain is further dried, and the exchanged humid air flows out from the air outlet channel 7 to ensure the drying effect; the grain dried in the drying chamber 2 falls into the discharge chamber 3, and flows into the discharge chamber 3 through the air inlet 8 of the fan. The hot air is blown in again to dry the grain again. Under the action of the feeding mechanism, the grain flows to the discharge port of the discharge chamber 3, and then enters the dryer body again through the lifting equipment for drying. When the moisture content of the grain is controlled within the safe range , the dried grain is sent to the grain storage bin by the external conveying mechanism for storage. The utility model improves the drying efficiency by pre-drying the grain in the temporary storage bin 1, drying in the drying chamber 2, and air-drying again in the discharge chamber 3 (the drying efficiency is more than doubled). , thus greatly increasing the grain drying capacity, while also reducing energy consumption and saving drying costs.

Claims (1)

1. a kind of grain drier, including drying machine body, the drying machine body is followed successively by temporary storing bin from top to bottom（1）, dry Dry chamber（2）And discharge chamber（3）, the temporary storing bin（1）, drying room（2）And discharge chamber（3）It is sequentially communicated, it is characterised in that：It is described Temporary storing bin（1）Lower part be arranged at intervals with multiple preheating blind pipes upwardly extended（4）, multiple preheating blind pipes（4）Side wall On be spaced apart be equipped with multiple exhaust vents, preheat blind pipe（4）Bottom pass through diversion pipe（5）It is connected with external heat air source； The drying room（2）Inside it has been arranged alternately air intake passage（6）And air-out passage（7）, the air intake passage（6）Air inlet open up In drying room（2）On front side wall, the air-out passage（7）Air outlet be opened in drying room（2）Rear wall on, air intake passage （6）And air-out passage（7）Side wall be orifice plate side wall, adjacent air intake passage（6）And air-out passage（7）Between to form drying logical Road；The discharge chamber（3）One side wall on be provided with air inlet（8）, with the air inlet（8）Opposite discharge chamber （3）Air outlet is provided on the other side（9）, discharge chamber（3）Inside it is provided with the allocation mechanism by power source drive, discharge chamber（3） Discharge port pass through lifting means and the temporary storing bin（1）The feed inlet at top is connected.