CN105509427B - Processing of agriculture product baking room - Google Patents

Abstract

This invention relates to a drying chamber for deep processing of agricultural and sideline products, comprising a drying chamber, a blower, a heat source air box, an air supply duct, a return air duct, and a dehumidification duct. The blower's outlet is connected to the air inlet via the heat source air box and the air supply duct. The blower's suction end is connected to the return air inlet via the return air duct. A fresh air inlet and a regulating valve are also provided on the return air duct. Three to four horizontal guide vanes are arranged in the lower part of the drying chamber, directly opposite the air inlet, from near to far. Each guide vane can rotate or swing around its two ends. This invention, when used for drying agricultural and sideline products, promotes uniform vertical circulation of hot air within the drying chamber, reduces the overall temperature difference within the drying chamber, and results in a more uniform temperature and humidity distribution.

Description

Drying room for deep processing of agricultural by-products

technical field

The invention relates to the technical field of deep processing of agricultural and sideline products, and more specifically relates to a drying room for deep processing of agricultural and sideline products.

Background technique

The current ordinary drying device is not equipped with a hot air circulation system. In the early stage of drying agricultural and sideline products, the gas in the drying device is basically in a relatively static state, and the heat from the lower part of the drying device cannot be smoothly transferred to the upper part of the drying device, resulting in The temperature difference in the longitudinal direction of the room is very large, and it is easy to form a "cold air mass" in the upper part of the drying device. In this way, the temperature and humidity distribution in the drying device is not uniform, so that the deep processing and baking of agricultural and sideline products cannot be carried out according to the process requirements. Partial burnt or underbaked problems are serious.

A similar technology is March 8, 2000, China Utility Model Patent Authorization Notice No. CN2367095Y, a hot air circulation and dehumidification device for a barn is disclosed, which consists of a barn, a heating device, and a hole. The top of the barn is provided with a Dehumidification skylight, the side of the barn is connected to a return air duct with the dehumidification skylight, the lower part of the return air duct is connected to one end of the wind inlet tunnel, and an adjustable air inlet is set in the middle of the upper part of the wind inlet tunnel. The other end communicates with the burrow at the lower part of the oven door on the ground of the barn. During the drying process of the hot air circulation and dehumidification device in the drying room, the path of the upward airflow is fixed, and the four corners of the drying room often become dead angles, resulting in uneven temperature and humidity in the baking area, unsatisfactory drying conditions, and long drying time. The drying effect is not uniform, so that the temperature of the drying room cannot meet the requirements of the process, which causes great difficulties for the drying of agricultural and sideline products.

Contents of the invention

In view of this, the object of the present invention is to provide a drying room for deep processing of agricultural and sideline products. The temperature difference makes the temperature and humidity distribution more uniform.

In order to achieve the above object, the technical scheme of the present invention is as follows:

A drying room for deep processing of agricultural and sideline products, including a drying room, a blower, a heat source air box, an air supply pipe, a return air pipe and a moisture exhaust pipe; the moisture exhaust pipe is connected to the top of the drying chamber or the upper part of one side Outside the drying room; the top or one side of the drying chamber is provided with an air return port, and one side of the lower part is provided with an air inlet; the air outlet of the blower is connected to the air inlet through the heat source bellows and the air supply pipe; The air end communicates with the air return port through the air return pipe; there are also fresh air ports and regulating air valves on the return air pipe; A horizontal deflector; each deflector can rotate or swing around the shaft at both ends of the deflector; the height of the deflector at different positions from the bottom plate of the drying chamber decreases in turn according to the distance from the air inlet, and the deflector at different positions The windward area increases in order according to the distance from the air inlet; among them, the height of the lowermost edge of the deflector closest to the air inlet is equal to the horizontal height of the upper 1/4-1/3 of the center of the air inlet; The height of the lowermost edge of the deflector is lower than the horizontal height of the lowest position of the air inlet.

The positions of the rotating shafts at both ends of the deflector itself are asymmetrically eccentric relative to the horizontal center of the deflector, that is, the rotating shafts at both ends are set at 2/3-3/4 of the vertical height of the deflector; the rotating shafts at both ends of the deflector It is installed on the inner wall panels on both sides of the drying chamber through bearings, or on the brackets in the drying chamber.

Further, the drying chamber is surrounded by interlayer boards and up and down, and the interlayer is filled with thermal insulation materials.

Further, there are two moisture discharge pipes, which are arranged on the top of the drying chamber.

Further, a multi-layer shelf is arranged above the deflector in the drying chamber, and a grid baking tray is arranged on the shelf.

Further, the heat source of the heat source wind box is provided by an electric heating pipe, or a gas furnace, or a coal furnace, or a wood stove.

Compared with the prior art, the beneficial effects and innovations of the present invention are as follows: the present invention designs a new air outlet in front of the air suction end of the blower, and makes the whole drying room generate slight positive pressure by controlling and adjusting the air valve to supplement the air; The moisture discharge pipe on the top or the upper part of one side of the drying chamber discharges moisture outward. The present invention also cleverly uses a plurality of deflectors arranged asymmetrically and eccentrically, and utilizes the hot air flow to drive the deflectors to rotate to dynamically change the wind direction; it saves the power drive of the motor and the complicated mechanical transmission in the high temperature environment, which is economical, practical, energy-saving, The installation is simple and the cost is low; the temperature distribution in the drying room is relatively balanced, the drying time is greatly shortened, and the baking quality and output of agricultural and sideline products are improved.

Description of drawings

Figure 1 is a schematic diagram of the present invention.

Reference signs: 1 drying chamber; 2 blower; 3 heat source bellows; 4 air supply pipe; 5 return air pipe; flow plate; 12 shafts; 13 multi-layer racks.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1, a drying room for deep processing of agricultural and sideline products includes a drying room 1, a blower 2, a heat source bellows 3, an air supply pipe 4, a return air pipe 5 and a dehumidification pipe 6; The top and bottom are interlayer boards, and the interlayer is filled with insulation materials; the moisture discharge pipe 6 is connected to the outside of the drying chamber 1 from the top of the drying chamber 1; Air outlet 7, the lower side is provided with air inlet 8; The air outlet of described blower 2 is connected to air inlet 8 through heat source bellows 3, air supply pipe 4; Connected; on the return air pipe 5, there are also fresh air outlets 9 and regulating air valves 10; the lower part of the drying chamber 1 is facing the air inlet 8 from near to far, and 3-4 horizontal air outlets are evenly spaced Deflector 11; each deflector 11 can rotate or swing around the rotating shaft 12 at its two ends; the height of the deflector 11 at different positions from the bottom plate of the drying chamber 1 is reduced in turn according to the distance from the air inlet 8, and different positions The windward area of the deflector 11 increases sequentially according to the distance from the air inlet 8; among them, the height of the lowermost edge of the deflector 11 closest to the air inlet 8 is 1/4-1/3 above the center of the air inlet 8. The height of the lowermost edge of the deflector 11 farthest from the air inlet 8 is lower than the horizontal height of the lowest position of the air inlet 8; the position of the rotating shaft 12 at both ends of the deflector 11 itself is It is asymmetrically and eccentrically arranged, that is, the rotating shafts 12 at both ends are set at 2/3-3/4 of the vertical height of the deflector 11; the rotating shafts 12 at both ends of the deflector 11 are installed on the inner wall panels on both sides of the drying chamber 1 through bearings on, or installed on the bracket in the drying chamber 1.

Above the deflector 11 in the drying chamber 1, a multi-layer rack 13 is arranged, and a grid baking tray is arranged on the rack.

The heat source of the above-mentioned heat source wind box 3 is provided by an electric heat pipe.

An electrical control box is arranged outside the drying chamber 1; the electrical control box is connected to the blower 2 and the heat source wind box 3; there is a temperature sensor in the drying chamber 1, and the temperature sensor is connected to a temperature controller in the electrical control box.

Using this embodiment, when the grid baking tray in the drying chamber 1 is placed with the agricultural and sideline products to be baked, the electrical control box is started, the blower 2 and the heat source bellows 3 start to work, and the hot air is blown horizontally from the air inlet 8 The hot air flows in and blows to the deflectors 11 at different positions in turn from near to far; when the hot air meets the deflectors 11 of different heights, the hot air turns to rise, and because the grid baking trays are placed in multiple layers, the hot air passes through the upper and lower sides in turn. The agricultural and sideline products are baked on the layer grid baking tray. The moisture generated by the baking is discharged from the moisture exhaust pipe 6, and the airflow reaching the uppermost layer is heated by the air return port 7, the return air pipe 5, the blower 2, and the heat source bellows 3. , and then blow it in horizontally from the air inlet 8, continuously circulating. Until the agricultural and sideline products are dried; during the re-baking process, with the discharge of moisture, it is necessary to supplement the circulating air. At this time, open and adjust the new air outlet 9 and set the adjustment air valve 10.

As the hot air is continuously blown in from the air inlet 8, it blows to the deflectors 11 at different positions in turn from near to far; because some hot air is diverted in front of each deflector 11, the latter stage of deflector The wind pressure of the plate is much smaller than that of the previous stage deflector, and the large-area part of the eccentric deflector 11 is located below the rotating shaft 12 under the action of gravity; at this time, the first piece closest to the air inlet 8 The deflector is first deflected by the wind pressure, and the wind direction of this level of deflector changes. When the first deflector is deflected to nearly 90°, due to the effect of inertia, the large area of the first deflector quickly passes over the "dead zone". ” point, continue to rotate, then the small-area part of the deflector 11 starts to face the wind, and then continues to rotate, and the direction of the diversion wind changes again. When the large-area part of the first deflector turns over the highest point, due to the large-area part With the unbalanced gravity and the small area facing the wind, the first deflector rotates at an accelerated speed, and the direction of the deflected wind changes again. When the large-area part of the first deflector passes the "dead" point, the wind pressure on the second deflector 11 that is closer to the air inlet 8 becomes larger and begins to deflect. Change, when the second deflector 11 is deflected to nearly 90° due to the effect of inertia, the large-area part of the second deflector 11 also quickly crosses the "dead" point and continues to rotate, and then the second deflector The small-area part of 11 starts to face the wind, and then continues to rotate, and the direction of the air flow diversion between the first deflector and the second deflector 11 changes again. When the large-area part of the second deflector 11 turns over the highest point, due to the unbalanced gravity of the large-area part and the frontal wind of the small-area part, the second deflector 11 also accelerates to rotate, and the direction of the deflecting wind changes again. . When the large-area part of the second deflector 11 passes the "dead" point, the wind pressure on the third deflector farther from the air inlet 8 becomes larger and begins to deflect, and the diversion wind direction of this level also occurs Change, when the third deflector deflects to close to 90°, due to the effect of inertia, the large-area part of the third deflector also quickly crosses the "dead" point and continues to rotate, and then the small part of the third deflector The area part starts to face the wind, and then continues to rotate, and the direction of the air guide between the second deflector 11 and the third deflector changes again. When the large-area part of the third deflector turned over the highest point, due to the unbalanced gravity of the large-area part and the front-facing wind of the small-area part, the third deflector also accelerated its rotation, and the direction of the diversion wind changed again.

The multiple deflectors 11 of this embodiment rotate in the drying chamber 1 and act together to continuously change the wind direction. Due to the dynamic randomness when changing the wind direction, the hot gas in the drying room is evenly circulated up and down, reducing the drying time in the drying room. The overall temperature difference makes the temperature and humidity distribution more uniform.

Claims (6)

1. a kind of processing of agriculture product baking room, including drying chamber（1）, air blower（2）, thermal source bellows（3）, ajutage （4）, backwind tube（5）And dehumidification tube（6）；Dehumidification tube（6）From the drying chamber（1）Interior top or the top of side are connected to drying Room（1）Outside；The drying chamber（1）The top of top or side is provided with return air inlet（7）, bottom side is provided with air inlet（8）；It is special Sign is：The air blower（2）Air outlet through thermal source bellows（3）, ajutage（4）Connect air inlet（8）；The air blower （2）Air draught end pass through backwind tube（5）With return air inlet（7）Connection；In backwind tube（5）On be additionally provided with fresh wind port（9）With regulation wind Valve（10）；The drying chamber（1）Interior bottom face air inlet（8）Position is near and far, proportional spacing be provided with 3-4 transverse direction Deflector（11）；Every piece of deflector（11）Can be around the rotating shaft at itself both ends（12）Rotation is swung；The deflector of diverse location （11）From drying chamber（1）The height of bottom plate, is pressed and air inlet（8）Distance reduce successively, the deflector of diverse location（11）Meet Wind area is pressed and air inlet（8）Distance increase successively；Wherein, away from air inlet（8）Nearest deflector（11）Height bottom With air inlet（8）The level height flush of center 1/4-1/3 positions on the upper side；Away from air inlet（8）Farthest deflector（11）Most Following height will be less than air inlet（8）The level height of extreme lower position；The deflector（11）The rotating shaft at itself both ends（12）Position Put opposite flow plate（11）Horizontal centre is the rotating shaft in asymmetric eccentric setting, i.e. both ends（12）It is located at deflector（11）Vertically At height 2/3-3/4；Deflector（11）The rotating shaft at both ends（12）Drying chamber is arranged on by bearing（1）The inwall wallboard on both sides On, or installed in drying chamber（1）On interior support；Use the polylith deflector of asymmetric eccentric setting（11）, utilize thermal current Drive deflector（11）Rotation, dynamically changes wind direction.

2. processing of agriculture product baking room according to claim 1, it is characterised in that：The drying chamber（1）Surrounding Be up and down sandwich plate, is filled with insulation material in interlayer.

3. processing of agriculture product baking room according to claim 1 or 2, it is characterised in that：The dehumidification tube（6）If There are two, located at the drying chamber（1）Top.

4. processing of agriculture product baking room according to claim 1 or 2, it is characterised in that：The drying chamber（1）It is interior Deflector（11）Top be provided with multilayer rack（13）, rack is provided with grid drip pan.

5. processing of agriculture product baking room according to claim 1 or 2, it is characterised in that：The thermal source bellows（3） Thermal source be by electrothermal tube or gas furnace or coal stove or wood stove offer.

6. processing of agriculture product baking room according to claim 1 or 2, it is characterised in that：The drying chamber（1）Outside Provided with electric control box；Electric control box connects air blower（2）With thermal source bellows（3）；Drying chamber（1）Inside there is temperature sensor, Temperature controller in temperature sensor connection electric control box.