CN211060528U

CN211060528U - Wind field adjusting device for curing barn

Info

Publication number: CN211060528U
Application number: CN201922163583.0U
Authority: CN
Inventors: 毛新民; 冯超; 周燕湘
Original assignee: Choicest Chinese Choice Co ltd
Current assignee: Choicest Chinese Choice Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-07-21
Anticipated expiration: 2029-12-05

Abstract

The utility model provides an air field adjusting device for baking house, baking house has hot-blast room and baking chamber, and hot-blast room communicates with each other through hot air exitus and return air inlet circulation with the baking chamber, is equipped with the air adjusting plate that is the slope and arranges corresponding to hot air exitus in baking chamber. The air adjusting plate is connected with the curing barn through a hinge joint, and the air adjusting plate is connected with an air adjusting plate driving device which can control the inclination angle of the air adjusting plate. The device comprises a controller, a hot air outlet, a material to be baked, a far-end air speed sensor, a near-end air speed sensor, an air adjusting plate driving device and a controller, wherein the far-end air speed sensor is arranged at a position, far away from the hot air outlet, of the material to be baked, the near-end air speed sensor is arranged at a position, close to the hot air outlet, of the material to be baked. The utility model discloses can realize that the air supply is even, improve and toast the quality, when toasting the material loading moreover and changing and cause the local resistance to change, can automatically regulated, realize the even of cross-flow wind field.

Description

Wind field adjusting device for curing barn

Technical Field

The utility model relates to a wind field adjusting device for large-scale roasting room.

Background

The baking room is generally divided into two parts, one part is a hot air chamber, the other part is a baking chamber, a circulating fan and a heat exchanger are arranged in the hot air chamber, the circulating fan blows hot air to the baking chamber from a hot air port on the upper part, and the hot air passes through a gap between materials and then returns to the hot air chamber from a return air port on the lower part. Because the air supply distance is very long, the cross-flow wind field in the baking chamber is not uniform, the cross-flow wind speed close to the air inlet is low, the cross-flow wind speed close to the far end is high, the wind speed is not uniform, the heat and mass transfer speeds are not equal, and the baking dehydration is not uniform.

In order to realize a better baking effect, measures are adopted at present to increase the air volume and the air pressure of a circulating fan and realize the relative uniformity of an air field by means of large air volume; and the manual reverse roasting trolley exchanges the roasting trolley close to the inner part with the roasting trolley close to the outer part in the roasting process.

However, the above solutions either require a large investment or add cumbersome steps, which are not economical and practical.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a wind field adjusting device for roast room solves the above-mentioned technical problem that exists among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a roast room is with wind field adjusting device, roast room has hot-blast room and baking chamber, and hot-blast room is equipped with hot air exitus and return air inlet, one side of baking chamber through hot-blast passageway with hot-blast exitus is linked together, the opposite side through return air passageway with the return air inlet communicates with each other its characterized in that:

an air adjusting plate is arranged in the baking chamber corresponding to the hot air outlet, and the air adjusting plate is obliquely arranged, so that the cross sectional area of the hot air channel is smaller and smaller from one end close to the hot air outlet to one end far away from the hot air outlet.

The wind field adjusting device for roast room, wherein: the width of the air adjusting plate is the same as that of the baking room, and the air adjusting plate is arranged along the length direction of the baking room.

The wind field adjusting device for roast room, wherein: circulating fan and heat exchanger have been arranged to the hot-blast room in, toast the room and have arranged a plurality of dollies that toast along length direction to bear and wait to toast the material.

The wind field adjusting device for roast room, wherein: the air adjusting plate is connected with the curing barn through a hinge joint, and the air adjusting plate is connected with an air adjusting plate driving device which can control the inclination angle of the air adjusting plate.

The wind field adjusting device for roast room, wherein: the device is characterized in that a far-end wind speed sensor is arranged at a position, far away from a hot air outlet, of a material to be baked, a near-end wind speed sensor is arranged at a position, close to the hot air outlet, of the material to be baked, and the far-end wind speed sensor, the near-end wind speed sensor and an air adjusting plate driving device are all connected to a controller in a signal mode.

The wind field adjusting device for roast room, wherein: the material position of waiting to toast keeping away from hot-blast exit is equipped with distal end temperature sensor, is equipped with near-end temperature sensor in the material position of waiting to toast that is close to hot-blast exit, distal end temperature sensor, near-end temperature sensor and air adjusting plate drive arrangement are all signal connection to controller.

The wind field adjusting device for roast room, wherein: the air adjusting plate driving device is an electric screw rod, a hydraulic cylinder or a pneumatic cylinder.

The beneficial effects of the utility model are that, it is even to realize supplying air, improves and toasts the quality, toasts the material moreover and loads to change and when causing the local resistance to change, can automatically regulated, realizes the even of cross-flow wind field.

Drawings

Fig. 1 is a schematic structural diagram of the wind field adjusting device for the curing barn provided by the invention.

The reference numbers indicate that 1-air return inlet, 2-circulating fan, 3-heat exchanger, 4-partition, 5-hot air chamber, 6-hot air outlet, 7-air adjusting plate, 8-air adjusting plate driving device, 9-baking trolley, 10-material to be baked, 11-controller, 12-baking chamber, 13-baking room heat-insulating plate, 14-far-end wind speed sensor, 15-near-end wind speed sensor and inclination angle α.

Detailed Description

Some specific embodiments of the invention will be described in detail below, by way of example and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.

In essence, the flow of the circulating hot air in the baking room can be regarded as the flow of air in a rectangular air pipe with uniformly-opened lower side surface, the gaps among the baked materials are relatively uniform, the baking room can be simplified into a pore plate with uniformly-opened pores, the flowing air has dynamic pressure and static pressure, the forward flow of the air is embodied by dynamic pressure, and the pressure of the air on the pipe wall is embodied by static pressure. When air flows in the rectangular air pipe, static pressure of the air vertically acts on the pipe wall, if holes are formed in the side wall of the air pipe, the air flows out in the direction perpendicular to the pipe wall due to static pressure difference between the inside and the outside of the hole, the flow speed generated by the static pressure difference is in direct proportion to the evolution direction of the static pressure, the through-flow air passing through the baking oven is generated by the static pressure, and the same static pressure is ensured at the near end and the far end of the baking chamber, which are far away from the air inlet, if the air speed of the through-flow. For a rectangular air duct with a constant section, as part of air flows away from one side of the perforated plate, the air flow in the duct from the near end of the air inlet to the far end is continuously reduced, the dynamic pressure is correspondingly reduced, the static pressure is increased, and the flow velocity of the through-flowing air is continuously increased. According to the principle of conservation of energy, the relationship between dynamic pressure and static pressure from the proximal to the distal adjacent hole: pj1+ Pd1 ═ Pj2+ Pd2+ (Rl + Z)_1-2The static pressure adding pressure of the previous opening is equal to the static pressure adding pressure of the adjacent opening, the extension resistance and the local resistance, so that the condition that the static pressure of the lower hole of the air duct is equal is that the dynamic pressure drop is equal to the resistance along the line, and the flow area of the air duct needs to be gradually reduced to keep the static pressure unchanged through calculation.

As shown in fig. 1, a partition plate 4 for a baking room separates a hot air chamber 5 and a baking chamber 12, the hot air chamber 5 and the baking chamber 12 are circularly communicated with an air return inlet 1 through a hot air outlet 6, a circulating fan 2 and a heat exchanger 3 are arranged in the hot air chamber 5, and a plurality of baking trolleys 9 are arranged in the baking chamber 12 along the length direction to bear materials 10 to be baked; one side (such as the upper side) of the baking trolley 9 is provided with a hot air channel communicated with the hot air outlet 6, and the other side (such as the lower side) is provided with a return air channel communicated with the return air inlet 1; when the baking room works, hot air heated by the heat exchanger 3 is sent into a hot air channel of the baking room 12 from the hot air outlet 6 by virtue of the operation of the circulating fan 2, and after the materials 10 to be baked in the baking trolley 9 are heated, the materials are returned to the hot air chamber 5 through the return air channel and the return air inlet 1, so that the materials 10 to be baked are dried by circulating heating.

In order to avoid the difference of the drying quality caused by the overlarge difference of the hot air speed between the material to be baked 10 far away from the hot air outlet 6 and the material to be baked 10 close to the hot air outlet 6, the utility model provides an air field adjusting device for a baking room, which is characterized in that an air adjusting plate 7 which is obliquely arranged is arranged in a baking chamber 12 along the length direction, the width of the air adjusting plate 7 is the same as that of the baking room, one end of the air adjusting plate close to the hot air outlet 6 is pivoted and fixed at the top of the baking room through a pin shaft, and the distance between the other end of the air adjusting plate and the material to be baked 10 is closer and closer, so that the cross-sectional area of a; by virtue of the setting air adjusting plate 7 can make the wind channel area that the material 10 corresponds of waiting to toast of keeping away from hot air outlet 6 department diminish to improve the wind pressure, make the wind speed increase, thereby the material 10 of waiting to toast of keeping away from hot air outlet 6 department and the material 10 drying speed of waiting to toast that is close to hot air outlet 6 department tend to the same.

The utility model discloses still be equipped with distal end air velocity transducer 14 keeping away from waiting to toast material 10 position of hot air exitus 6 department, be equipped with near-end air velocity transducer 15 in waiting to toast material 10 position that is close to hot air exitus 6 department, still be in connect an air adjusting plate drive arrangement 8 (for example electronic lead screw, pneumatic cylinder or pneumatic cylinder) on the air adjusting plate 7, distal end air velocity transducer 14, near-end air velocity transducer 15 and air adjusting plate drive arrangement 8 signal connection to controller 11, controller 11 passes through the information that distal end air velocity transducer 14 and near-end air velocity transducer 15 collected controls the inclination α of air adjusting plate 7 with air adjusting plate drive arrangement 8's flexible, can make the waiting to toast material 10 of keeping away from hot air exitus 6 department and be close to waiting to toast material 10 drying speed the same basically to obtain even hot-blast wind field.

In addition, the far-end wind speed sensor 14 and the near-end wind speed sensor 15 in the above embodiments may be replaced by a far-end temperature sensor and a near-end temperature sensor, respectively, and the control manner is to make the temperatures of the far-end and near-end hot air tend to be the same.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a roast room is with wind field adjusting device, roast room has hot-blast room and baking chamber, and hot-blast room is equipped with hot air exitus and return air inlet, one side of baking chamber through hot-blast passageway with hot-blast exitus is linked together, the opposite side through return air passageway with the return air inlet communicates with each other its characterized in that:

2. The wind field adjusting device for the curing barn according to claim 1, wherein: the width of the air adjusting plate is the same as that of the baking room, and the air adjusting plate is arranged along the length direction of the baking room.

3. The wind field adjusting device for the curing barn according to claim 1, wherein: circulating fan and heat exchanger have been arranged to the hot-blast room in, toast the room and have arranged a plurality of dollies that toast along length direction to bear and wait to toast the material.

4. The wind field adjusting device for the curing barn according to claim 1, wherein: the air adjusting plate is connected with the curing barn through a hinge joint, and the air adjusting plate is connected with an air adjusting plate driving device which can control the inclination angle of the air adjusting plate.

5. The wind field adjusting device for the curing barn according to claim 4, wherein: the device is characterized in that a far-end wind speed sensor is arranged at a position, far away from a hot air outlet, of a material to be baked, a near-end wind speed sensor is arranged at a position, close to the hot air outlet, of the material to be baked, and the far-end wind speed sensor, the near-end wind speed sensor and an air adjusting plate driving device are all connected to a controller in a signal mode.

6. The wind field adjusting device for the curing barn according to claim 4, wherein: the material position of waiting to toast keeping away from hot-blast exit is equipped with distal end temperature sensor, is equipped with near-end temperature sensor in the material position of waiting to toast that is close to hot-blast exit, distal end temperature sensor, near-end temperature sensor and air adjusting plate drive arrangement are all signal connection to controller.

7. The wind field adjusting device for the curing barn according to claim 4, wherein: the air adjusting plate driving device is an electric screw rod, a hydraulic cylinder or a pneumatic cylinder.