CN117168129A - Drying device - Google Patents

Abstract

The invention discloses a drying device, comprising: the steel belt is used for conveying the materials along a preset path; the driving mechanism is used for driving the steel belt to move so as to convey; the first heating device is an infrared heating device, is arranged along a preset path and is positioned on the upper side of the steel belt, and is used for drying materials on the preset path; the second heating device is arranged along the preset path and positioned at the lower side of the steel belt and is used for heating the steel belt. The first heating device releases electromagnetic ray conduction energy to realize heating and baking, compared with a traditional heating source, the infrared heating tube has the most outstanding advantage of high heating efficiency, and can reach the highest heating efficiency within a few seconds. Meanwhile, the second heating device heats the lower side of the material through the steel belt, so that the material is uniformly heated up and down, and the heating quality is further improved.

Description

a drying device

Technical field

The present invention relates to the technical field of drying, and more specifically, to a drying device.

Background technique

Reconstituted tobacco leaves refer to recycled products that are made into sheets or filaments using discarded tobacco stems, tobacco dust and broken tobacco pieces during the cigarette processing process, and are used as cigarette fillers. Reconstituted tobacco leaves play an important role in cigarette production, not only reducing the cost of cigarettes, but also improving the inherent quality of cigarettes.

The baking process is an important process in the production of reconstituted tobacco leaves. The baking process means that the tobacco leaves pass through the baking device to dry the remaining moisture in the tobacco leaves, and then enter the next process. The quality of the baking is directly related to Depends on the quality of finished tobacco leaves. Therefore, the baking time needs to be shortened as much as possible during the baking process so that the remaining moisture in the tobacco leaves can be dried quickly. Otherwise, if the baking time is too long, the quality of the tobacco leaves will be destroyed.

In summary, how to effectively solve the problem that the current drying device is not effective in drying tobacco leaves is an urgent problem that those skilled in the art currently need to solve.

Contents of the invention

In view of this, the object of the present invention is to provide a drying device that can effectively solve the problem that the current drying device is not effective in drying tobacco leaves.

In order to achieve the above objects, the present invention provides the following technical solutions:

A drying device including:

Steel belt, used to transport materials along a preset path;

A driving mechanism used to drive the steel belt to move for transportation;

A first heating device, the first heating device is an infrared heating device, arranged along the preset path and located on the upper side of the steel belt, for drying materials on the preset path;

The second heating device is arranged along the preset path and located on the lower side of the steel strip, and is used to heat the steel strip.

In the above drying device, when in use, the material is placed on the steel belt. Driven by the driving mechanism, the steel belt moves along the preset path. During the movement along the preset path, the first heating device starts from The upper side of the steel belt is directly irradiated onto the material through infrared rays to heat and dry the material. The second heating device simultaneously heats the steel belt from the lower side of the steel belt, so that the steel belt can heat and dry the material on it, so that the material can be heated and dried in both the upper and lower directions. In the above-mentioned drying device, the first heating device releases electromagnetic ray conductive energy to achieve heating and baking. Compared with traditional heating sources, the most prominent advantage of infrared heating tubes is high heating efficiency, which can reach the highest heating efficiency within a few seconds. , applying it in the baking process of reconstituted tobacco leaves can effectively improve the baking efficiency of tobacco leaves and improve product quality. At the same time, the second heating device heats the lower side of the material through the steel belt to better ensure that the material is heated evenly up and down, further improving the heating quality. To sum up, the drying device can effectively solve the problem that the current drying device is not effective in drying tobacco leaves.

In some technical solutions, multiple temperature detectors are arranged side by side along the preset path.

In some technical solutions, the first heating device includes a plurality of infrared heating tubes arranged in sequence along the preset path; and/or the second heating device includes a plurality of infrared heating tubes arranged in sequence along the preset path. .

In some technical solutions, the plurality of infrared heating tubes of the first heating device arranged in parallel along the preset path can individually control the heating power; and/or the second heating device is arranged in parallel along the preset path. Multiple infrared heating tubes can individually control heating power.

In some technical solutions, two temperature detectors are included, respectively arranged at the starting point and the end point of the preset path.

In some technical solutions, an infrared heating tube in the first heating device is a starting infrared heating tube located at the starting point of the preset path, and an infrared heating tube in the first heating device is located at the starting point of the preset path. The end point infrared heating tube at the end of the preset path, the remaining infrared heating tubes in the first heating device are evenly arranged between the starting point infrared heating tube and the end point infrared heating tube; the infrared heating tube of the first heating device And the infrared heating tubes of the second heating device are arranged perpendicular to the preset path.

In some technical solutions, a box is also included, the steel strip, the first heating device and the second heating device are all located in the box, and openings are provided at two ends of the box away from each other to serve as inlets respectively. The feed port and the discharge port constitute the preset path, and the steel belt is an annular steel belt for transporting materials from the feed port to the discharge port. .

In some technical solutions, the driving mechanism includes two guide rollers for supporting the steel strip at both ends, and at least one of the guide rollers is drivingly connected to the rotational driving device; each infrared heating device of the second heating device The tubes are evenly arranged between the two guide rollers and located inside the ring of the steel belt.

In some technical solutions, a control box for controlling the operation of the first heating device and the second heating device is arranged in the lower part of the box cavity of the box body.

In some technical solutions, the infrared heating tubes of the first heating device are installed on the first bracket, and the infrared heating tubes of the second heating device are installed on the second bracket. The first bracket and the second The bracket is installed on the box.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic cross-sectional structural diagram of a drying device provided by an embodiment of the present invention;

Figure 2 is a schematic three-dimensional structural diagram of a drying device provided by an embodiment of the present invention.

The drawings are marked as follows:

Steel belt 1, guide roller 2, first heating device 3, second heating device 4, temperature detector 5, box 6, control box 7, first bracket 8, second bracket 9.

Detailed ways

The embodiment of the present invention discloses a drying device to effectively solve the problem that the current drying device has poor drying effect on tobacco leaves.

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

Please refer to Figures 1-2. Figure 1 is a schematic cross-sectional structural diagram of a drying device provided by an embodiment of the present invention; Figure 2 is a schematic three-dimensional structural diagram of a drying device provided by an embodiment of the present invention.

In some embodiments, this embodiment provides a drying device. Specifically, the drying device may be a tobacco leaf drying device. Specifically, it may be a tobacco leaf drying device based on infrared heating. Specifically, the drying device may include a steel belt 1, a driving mechanism, a first heating device 3 and a second heating device 4, and of course may also include some other structures.

The steel belt 1 is used to transport materials along a preset path, and the driving mechanism is used to drive the steel belt 1 to move for transportation. For example, the steel belt 1 can be driven to move along a preset path to complete transportation. The preset path can be a straight line segment or a curve, where the curve is such as an arc or other irregular route. The specific path can be set as needed. The driving mechanism can drive the steel belt 1 to circulate and continuously pass through the preset path, or it can drive the steel belt 1 to pass through the preset path at once. The specific passing method can be set as needed. When in use, the tobacco leaves are laid directly or indirectly on the steel belt 1 to gradually move along the preset path.

The first heating device 3 is an infrared heating device. The infrared heating device is a device that uses infrared heating. Infrared heating can also be called infrared heating. Infrared heating is to irradiate the infrared rays emitted by the infrared radiator (generator) onto the object. On a heated object, in addition to being reflected and transmitted, the rest is absorbed by the object and converted into thermal motion of material molecules, thereby heating the object.

The first heating device 3 is arranged along the preset path and is located on the upper side of the steel belt 1 to dry the materials on the preset path. At this time, the materials on the preset path are located on the steel belt 1, that is, the first heating device 3 is arranged along the preset path. The heating device 3 emits infrared rays to the material on the steel belt 1 at multiple points or sections along the entire preset path, and the infrared rays are irradiated on the material to complete heating of the material. It should be noted that the first heating device 3 is arranged on the upper side of the steel strip 1. It does not need to be directly on the upper side. It can be directly on the upper side or arranged at an angle. It only needs to ensure that the infrared rays of the first heating device 3 can be irradiated more evenly. On the preset path materials, to dry the materials on the preset path. The first heating device 3 is arranged along the preset path, that is, the infrared light sources are evenly distributed along the preset path, so that each section of the preset path can be uniformly irradiated by infrared rays.

The second heating device 4 is arranged along the preset path and is located on the lower side of the steel strip 1 for heating the steel strip 1. Similarly, it is necessary to ensure that the second heating device 4 heats each section of the steel strip 1 along the preset path. Uniformity to ensure that the steel strip 1 is heated more evenly. The heating of the steel strip 1 can heat the material from the lower side of the material on the steel strip 1. It should be noted that the second heating device 4 is arranged on the lower side of the steel strip 1 so as to utilize the space on the lower side of the steel strip 1 so as to facilitate uniform heating of the steel strip 1 in the preset path width direction. The second heating device 4 may be an infrared heating device, a general resistance heating device, or other heating devices.

In the above-mentioned drying device, when in use, the material is placed on the steel belt 1. Driven by the driving mechanism, the steel belt 1 moves along the preset path. During the movement along the preset path, the first heating The device 3 directly irradiates the material with infrared rays from the upper side of the steel belt 1 to heat and dry the material. The second heating device 4 simultaneously heats the steel belt 1 from the lower side of the steel belt 1, so that the steel belt 1 can heat and dry the materials on it, so as to heat and dry the materials in both the upper and lower directions. In the above-mentioned drying device, the first heating device 3 releases electromagnetic ray conductive energy to achieve heating and baking. Compared with traditional heating sources, the most prominent advantage of the infrared heating tube is that it has high heating efficiency and can reach the highest heating level within a few seconds. efficiency, applying it in the baking process of reconstituted tobacco leaves can effectively improve the baking efficiency of tobacco leaves and improve product quality. At the same time, the second heating device 4 heats the lower side of the material through the steel belt 1, so as to better ensure that the material is heated evenly up and down, and further improve the heating quality. To sum up, the drying device can effectively solve the problem that the current drying device is not effective in drying tobacco leaves.

In some embodiments, one or more temperature detectors 5 can be arranged at a preset path, and correspondingly, the controller can control the first heating device 3 and/or the second heating device 3 according to the detection value of the temperature detector 5 The heating device 4 starts and stops. Of course, the heating power can also be changed, such as switching between high-power heating and low-power heating.

Considering that the material continues to absorb heat on the preset path, based on this, it is preferable to arrange multiple temperature detectors 5 side by side along the preset path to detect the temperature in different sections of the preset path, so as to monitor the temperature along the preset path. Temperature changes along the path extension direction. Generally speaking, the temperature change along the extension direction of the preset path is unidirectional and close to a linear proportional change. Based on this, only one temperature detector 5 can be provided at both ends of the preset path. Of course, multiple temperature detectors 5 can also be arranged in the middle of the preset path.

In some embodiments, the first heating device 3 may include an infrared heating tube, and the infrared heating tube may extend along a preset path. However, this may easily lead to uneven heating of the material in the width direction of the preset path. Correspondingly, the second heating device 4 may also be provided with only one infrared heating tube to extend along a preset path.

In some embodiments, the first heating device 3 may include a plurality of infrared heating tubes arranged in sequence along a preset path; and/or the second heating device 4 may include a plurality of infrared heating tubes arranged in sequence along the preset path. . Where and/or means both the former and the latter, or one of the former and the latter. A plurality of infrared heating tubes are arranged sequentially along the preset path so that the heat sources are evenly arranged along the preset path to better ensure that the material in the extension direction of the preset path is evenly heated.

In some embodiments, multiple infrared heating tubes in which the first heating device 3 is juxtaposed along a preset path can be individually controlled to control heating power; and/or the second heating device 4 is juxtaposed along the preset path. The multiple infrared heating tubes provided can individually control the heating power. It should be noted that for the first heating device 3 and the second heating device 4, it is not required that each of the infrared heating tubes can independently control the heating power. It can be part of them, but there are at least two infrared heating tubes along the preset path. Infrared heating tubes are arranged side by side, and the heating power can be controlled independently without affecting each other. The heating power can be controlled individually by multiple infrared heating tubes arranged side by side along the preset path, or the infrared heating tubes corresponding to different road sections can be controlled to change the heating power according to the different temperatures detected by the multiple temperature detectors 5 to compensate for the temperature. Difference. The individual control of the heating power may include individual control of start and stop, or individual control of changes in the size of the heating power. Of course, it may also be both.

In some embodiments, only two temperature detectors 5 may be included, for example, they may be arranged at the starting point and the end point of the preset path, so as to obtain a more accurate temperature value with the minimum number of temperature detectors 5 .

In some embodiments, one of the infrared heating tubes in the first heating device 3 can be the starting infrared heating tube located at the starting point of the preset path, and one of the infrared heating tubes in the first heating device 3 can be located at the preset path. The terminal infrared heating tube at the end of the path, and the remaining infrared heating tubes in the first heating device 3 are evenly arranged between the starting infrared heating tube and the terminal infrared heating tube.

In some embodiments, the infrared heating tube of the first heating device 3 and the infrared heating tube of the second heating device 4 can be arranged perpendicular to the preset path. In order to make the material in the width direction of the preset path heated more evenly.

In some embodiments, in order to avoid heat loss and avoid the large influence of ambient wind on the temperature change of the material on the steel belt 1, it is preferred that the drying device also includes a box 6, in which the steel belt 1, the first heating device 3 and The second heating devices 4 are all located in the box 6, so that the materials on the entire preset path are located in the box 6.

Correspondingly, openings are opened at two ends of the box 6 that are far away from each other to serve as the feed port and the discharge port respectively, and a preset path is formed between the feed port and the discharge port.

The steel belt 1 can be an annular steel belt 1 for transporting materials from the feed port to the discharge port.

The transportation method of the endless steel belt 1 can be a transmission belt or a turntable mechanism. The axis of the driving shaft of the former is arranged parallel to the belt surface of the steel belt 1, while the latter is arranged perpendicular to the belt surface of the steel belt 1.

In some embodiments, the driving mechanism may include two guide rollers 2 for supporting the steel belt 1 at both ends, and at least one guide roller 2 is drivingly connected to the rotational driving device. The two guide rollers 2 and the endless steel belt 1 constitute a transmission belt mechanism.

At this time, each infrared heating tube of the second heating device 4 can be evenly arranged between the two guide rollers 2 and located inside the ring of the steel belt 1 . The number of infrared heating tubes of the second heating device 4 may be less than the number of infrared heating tubes of the second heating device 4 .

In some embodiments, a control box 7 for controlling the operation of the first heating device 3 and the second heating device 4 can be arranged in the lower part of the box cavity of the box 6 to facilitate operation.

In some embodiments, in order to facilitate installation, that is, to facilitate overall installation, the infrared heating tubes of the first heating device 3 can be installed on the first bracket 8, and the infrared heating tubes of the second heating device 4 can be installed on the second bracket. The first bracket 8 and the second bracket 9 are installed on the box 6 . The box 6 can be a square box 6, a cylindrical box 6, or other forms of boxes 6.

In some embodiments, a tobacco leaf drying device based on infrared heating is provided, including the above-mentioned infrared heating tube, temperature detector 5, guide roller 2, steel belt 1, box 6, bracket and control box 7. Infrared heating tubes are respectively installed on the upper and lower sides of the steel belt 1. Two temperature detectors 5 are respectively installed on the front and rear ends of the frame, that is, both ends of the preset path. The guide roller 2 and the steel belt 1 are installed on the upper and lower sides of the box 6. In the middle of the direction, the brackets of the infrared heating tubes are arranged on the upper and lower sides of the steel strip 1 to install the corresponding infrared heating tubes, and the control box 7 is arranged on the lower part of the box 6 .

The above-mentioned tobacco leaf drying device can quickly, evenly and comprehensively bake tobacco leaves in the reconstituted tobacco leaf baking process, which greatly improves the heating and baking efficiency and also improves the quality of tobacco leaf baking.

The infrared heating tube provided on the upper side of the steel belt 1 can directly heat and bake tobacco blades and other materials on the steel belt 1, and the infrared heating tube provided on the lower side of the steel belt 1 can heat the steel belt 1. Tobacco blades and other materials are heated and baked by heat conduction;

The temperature detectors 5 are respectively installed at the front and rear ends of the rack, which can monitor the temperature in the baking device in real time, and send signals to the control box 7 to adjust the output power of the infrared heating tube in real time through PID control, thereby maintaining the drying time. The temperature inside the baking device is always at the set temperature.

The guide roller 2 and the steel belt 1 are arranged at the middle end of the frame for transporting the tobacco blades, and the steel belt 1 can heat and bake the tobacco blades through heat conduction. The rack on which the infrared heating tube is installed is the overall support mechanism of the device; brackets are provided on the upper and lower sides of the steel belt 1 for installing and fixing the infrared heating tube.

The control box 7 is set at the lower end of the rack, which can receive the signal sent by the temperature detector 5 in real time, and adjust the output power of the infrared heating tube in real time through PID control, thereby keeping the temperature in the baking device at the set temperature. .

Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on its differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A drying device, characterized in that it includes: Steel belt, used to transport materials along a preset path; A driving mechanism used to drive the steel belt to move for transportation; A first heating device, the first heating device is an infrared heating device, arranged along the preset path and located on the upper side of the steel belt, for drying materials on the preset path; The second heating device is arranged along the preset path and located on the lower side of the steel strip, and is used to heat the steel strip. 2. The drying device according to claim 1, wherein a plurality of temperature detectors are arranged side by side along the preset path. 3. The drying device according to claim 2, wherein the first heating device includes a plurality of infrared heating tubes arranged sequentially along the preset path; and/or the second heating device includes a plurality of infrared heating tubes arranged along the preset path; The infrared heating tubes are arranged sequentially along the preset path. 4. The drying device according to claim 3, wherein the plurality of infrared heating tubes arranged side by side along the preset path in the first heating device can individually control the heating power; and/or the third The plurality of infrared heating tubes arranged side by side along the preset path in the two heating devices can individually control the heating power. 5. The drying device according to claim 4, characterized by comprising two temperature detectors, respectively arranged at the starting point and the end point of the preset path. 6. The drying device according to any one of claims 3 to 5, wherein an infrared heating tube in the first heating device is a starting point infrared heating tube located at the starting point of the preset path, so One infrared heating tube in the first heating device is the terminal infrared heating tube located at the terminal end of the preset path, and the remaining infrared heating tubes in the first heating device are evenly arranged between the starting point infrared heating tube and the terminal point. Between the infrared heating tubes; the infrared heating tubes of the first heating device and the infrared heating tubes of the second heating device are arranged perpendicular to the preset path. 7. The drying device according to claim 6, further comprising a box body, the steel strip, the first heating device and the second heating device are all located in the box body, the box body Openings are opened at the two ends far away from the body to serve as the feed port and the discharge port respectively. The preset path is formed between the feed port and the discharge port. The steel strip is an annular steel strip for use. Transport materials from the inlet to the outlet. 8. The drying device according to claim 7, wherein the driving mechanism includes two guide rollers for supporting the steel belt at both ends, and at least one of the guide rollers is drivingly connected to the rotational driving device. ; Each infrared heating tube of the second heating device is evenly arranged between the two guide rollers and is located inside the ring of the steel strip. 9. The drying device according to claim 8, characterized in that a control box for controlling the operation of the first heating device and the second heating device is arranged in the lower part of the box cavity of the box body. 10. The drying device according to claim 9, wherein the infrared heating tubes of the first heating device are installed on the first bracket, and the infrared heating tubes of the second heating device are installed on the second bracket. , the first bracket and the second bracket are installed on the box.