CN214370932U

CN214370932U - Gas hot-blast stove for grain drying

Info

Publication number: CN214370932U
Application number: CN202023288435.0U
Authority: CN
Inventors: 王英洁; 牛子杰; 王书林; 郭士砖; 史楠; 牛维; 黄新甫; 牛松华
Original assignee: Nanyang Aokelei Technology Co ltd
Current assignee: Nanyang Aokelei Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-10-08
Anticipated expiration: 2030-12-30

Abstract

The utility model provides a gas hot-blast furnace for grain is dried, including the furnace body, the furnace body front end is provided with the combustor, is provided with the combustion chamber in the furnace body, and the combustion chamber outside is provided with presss from both sides the cover, presss from both sides the cover bottom and is provided with the air distribution port, and the combustion chamber is inside to be provided with the shelves fire board, and the end of combustion chamber is provided with the diffusion awl, is provided with the cowling panel between shelves fire board and the diffusion awl. The tail part of the furnace body is provided with a wind mixing barrel corresponding to the outlet of the diffusion cone, and the inner wall of the wind mixing barrel is provided with a temperature sensor. Set up the fire baffle in the combustion chamber, on the one hand can block the length of high temperature flame, avoids the spark to enter into grain drying-machine, and on the other hand is in the fire baffle under the high temperature condition all the time and can makes the combustible gas that the combustor is not burnt produce the postcombustion, reduces fuel loss, increase of heat efficiency. The flame in the combustion chamber is not disturbed by the air distribution by the rectifying plate, and the combustion is stable. The diffusion cone enables air flow to move smoothly, and heat exchange efficiency is improved.

Description

Gas hot-blast stove for grain drying

Technical Field

The utility model relates to a hot-blast furnace equipment technical field specifically is a gas hot-blast furnace for grain is dried.

Background

At present, a gas hot blast stove is generally adopted to provide heat for a dryer in the grain drying process. The structure of the gas hot-blast stove is characterized in that combustible gas is combusted in a combustion chamber to heat air at normal temperature, and the hot air is sent into a dryer by a draught fan after being formed into hot air. The structure can not solve the problem of the proportioning of the gas quantity and the air quantity in the combustion process, thereby causing insufficient combustion and waste of gas, and simultaneously, residual flame or sparks can enter the grain dryer to cause safety hidden trouble; on the other hand, the temperature in the combustion chamber is difficult to control, and the grain is damaged due to the overhigh temperature of the discharged hot air.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art not enough, improve hot-blast furnace work efficiency, and provide a gas hot-blast furnace for grain is dried, the utility model discloses combustible gas burns fully, and the hot-blast temperature of discharge can be adjusted.

In order to achieve the above object, the utility model adopts the following technical scheme: a gas hot blast stove for drying grains comprises a stove body, wherein a burner is arranged at the front end of the stove body, a combustion chamber is arranged in the stove body, a jacket is arranged outside the combustion chamber, an air distribution port is arranged at the bottom of the jacket, a fire baffle is arranged inside the combustion chamber, a diffusion cone is arranged at the tail end of the combustion chamber, and a rectifying plate is arranged between the fire baffle and the diffusion cone; the tail part of the furnace body is provided with a wind mixing barrel corresponding to the outlet of the diffusion cone.

Furthermore, the diffusion cone and the furnace body are coaxially arranged, a gap is formed between the diffusion cone and the furnace body, and a tangential overflow hole is formed in the surface of the diffusion cone.

The air distribution port is arranged between the combustor and the fire baffle and is provided with an electromagnetic valve for adjusting the air inlet amount.

The rectifying plate is arranged along the inner wall of the combustion chamber, a circular through hole is formed in the middle of the rectifying plate, and the diameter of the through hole is smaller than that of the inlet of the diffusion cone.

And a temperature sensor is arranged on the inner wall of the air mixing barrel and is electrically connected with the electromagnetic valve through a controller.

Compared with the prior art, the beneficial effects of the utility model are that: set up the fire baffle in the combustion chamber, on the one hand can block the length of high temperature flame, avoids in residual flame or the mars enters into grain drying-machine, and on the other hand is in the fire baffle under the high temperature condition all the time and can makes the combustible gas that the combustor is not burnt to the greatest extent produce the secondary combustion, reduces fuel loss, increase of heat efficiency. The flame in the combustion chamber is not disturbed by the air distribution by the rectifying plate, the combustion is stable, the airflow moves smoothly by the diffusion cone, and the heat exchange efficiency is improved. The air distribution quantity can adjust the temperature of hot air in the air mixing cylinder and prevent the temperature of the discharged hot air from being overhigh.

Drawings

Fig. 1 is a schematic structural view of a gas hot blast stove for drying grain according to the present invention;

fig. 2 shows the structure schematic diagram of the overflow hole of the gas hot blast stove for drying grain of the utility model.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-2, the gas hot blast stove for drying grains comprises a stove body 1, a burner 2 is arranged at the front end of the stove body, a combustion chamber 3 is arranged in the stove body, a jacket 4 is arranged outside the combustion chamber, and an air distribution port 5 is arranged at the bottom of the jacket. The combustor 2 is provided with a combustion fan, and combustible gas is combusted in the combustion chamber to generate heat required by the grain dryer and convey hot air to the grain dryer for use. As shown in fig. 1, a fire damper 6 is arranged inside the combustion chamber, and the fire damper 6 is fixed on the inner wall of the combustion chamber by three evenly distributed support columns. The purpose of setting up the fire baffle is in order to prevent that the flame of burning in the combustion chamber from entering into grain drying-machine along with hot-blast, and fire baffle 6 can directly block the flame in the combustion chamber, shortens the distance of flame, simultaneously because the temperature of fire baffle is higher, can also make the combustible gas postcombustion that the combustor is not burnt to the greatest extent, and the burning is abundant, the heat utilization is also sufficient.

In order to ensure that the hot air generated by the combustion chamber and the distributed cold air are uniformly mixed, the tail end of the combustion chamber is provided with a diffusion cone 7, and the hot air generated by the combustion chamber enters the diffusion cone to expand, so that the air flow moves smoothly, and the heat exchange efficiency is improved. A rectifying plate 8 is arranged between the fire baffle and the diffusion cone, the rectifying plate is arranged along the inner wall of the combustion chamber, a circular through hole is formed in the middle, and the diameter of the through hole is smaller than that of the inlet of the diffusion cone. The change of the movement direction of the airflow by the rectifying plate is beneficial to the stable combustion of flame in the combustion chamber and can completely block residual flame and sparks bypassing the fire baffle. The tail of the furnace body is provided with an air mixing barrel 9 corresponding to the outlet of the diffusion cone, and the tail of the jacket is communicated with the air mixing barrel. The diffusion cone and the furnace body are coaxially arranged, a gap is reserved between the diffusion cone and the furnace body, a tangential overflow hole 10 is formed in the surface of the diffusion cone, and the structure of the overflow hole is shown in figure 2. The cold air entering from the air distribution port absorbs heat to become warm air while cooling the surface of the combustion chamber and the surface of the diffusion cone, and then enters the air mixing cylinder to be fully mixed with the hot air in the combustion chamber. More specifically, the air distribution port 5 is arranged at the bottom of the corresponding jacket between the burner and the fire damper, and an electromagnetic valve is arranged on the air distribution port to adjust the air inlet amount. Be provided with temperature sensor 11 on the air mixing barrel 9 inner wall, temperature sensor passes through controller 12 and solenoid valve electric connection, adjusts the air distribution mouth according to the wind temperature in the air mixing barrel and carries the cold wind volume.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention is included in the protection scope of the present invention.

Claims

1. The utility model provides a gas hot-blast furnace for grain is dried, includes the furnace body, and the furnace body front end is provided with the combustor, is provided with the combustion chamber in the furnace body, and the combustion chamber outside is provided with presss from both sides cover, its characterized in that: an air distribution port is arranged at the bottom of the jacket, a fire baffle is arranged in the combustion chamber, a diffusion cone is arranged at the tail end of the combustion chamber, and a rectifying plate is arranged between the fire baffle and the diffusion cone; the tail part of the furnace body is provided with a wind mixing barrel corresponding to the outlet of the diffusion cone.

2. The gas hot blast stove for grain drying according to claim 1, wherein the diffusion cone and the stove body are coaxially arranged, a gap is provided between the diffusion cone and the stove body, and a tangential overflow hole is provided on the surface of the diffusion cone.

3. The gas hot blast stove for grain drying of claim 1, wherein the air distribution opening is provided between the burner and the fire damper, and an electromagnetic valve is provided on the air distribution opening to adjust an air intake.

4. The gas hot blast stove for grain drying of claim 1, wherein the rectifying plate is arranged along the inner wall of the combustion chamber, a circular through hole is formed in the middle, and the diameter of the through hole is smaller than that of the inlet of the diffusion cone.

5. The gas hot blast stove for grain drying according to claim 3, wherein a temperature sensor is arranged on the inner wall of the mixing drum, and the temperature sensor is electrically connected with the electromagnetic valve through a controller.