Hot air flow equalization device for tobacco baking machine

Abstract

The present invention provides a hot air equalizing device for a tobacco drying machine, which can perform three-level equalizing of hot air, so that tobacco is heated evenly, thereby improving the quality of tobacco drying. The technical solution is to include an equalizing box, which is trapezoidal in design, and an air supply device is located on the side of the equalizing box with a small area, and the side of the equalizing box with a larger area faces the conveying chain plate. The surface of the equalizing box facing the conveying chain plate is provided with a plurality of vents, and the conveying chain plate is provided with a plurality of small holes. In the design of this technical point, the hot air first enters the equalizing box and diffuses from the small area end to the larger area end. During the diffusion process, a first-level equalization is performed, and then the hot air passes through the vents on the equalizing box and the small holes on the conveying chain plate in turn. The hot air is equalized for the second and third time, so that the hot air has a better equalization effect under the action of the three equalizations, and the quality of tobacco drying is better.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco equipment, and in particular to a hot air flow equalizing device for a tobacco baking machine capable of equalizing the hot air flow for baking tobacco. Background Art

[0002] Tobacco processing technology is one of the most critical core technologies for blended cigarettes. The effect of tobacco processing will directly affect the style and taste of blended products. The level of tobacco processing technology, to a certain extent, measures the technical content and market competitiveness of such a blended product. The research on tobacco processing technology is generally inseparable from the research on the feeding system and baking process. There are also a variety of specifications of tobacco baking devices on the market to meet the various needs of tobacco processing technology research.

[0003] The tobacco baking device includes a baking box and a tobacco conveying mechanism. During the baking process, the tobacco conveying mechanism conveys the tobacco to the baking box, and the baking box conveys hot air to the tobacco to bake the tobacco. Then, the tobacco conveying mechanism conveys the baked tobacco away from the baking box. When the hot air flow enters the baking box to bake the tobacco, the baking degree of the tobacco is often uneven due to the uneven distribution of the hot air flow. For example, some tobacco is over-baked due to strong contact with the hot air flow, and some tobacco does not meet the final requirements due to weak contact with the hot air flow. Therefore, in the process of baking the tobacco, it is very necessary to evenly flow the hot air flow so that the degree of hot air flow contacted by the tobacco at various places is consistent, and the baking effect is consistent. Summary of the invention

[0004] The present invention aims to provide a hot air flow equalization device for a tobacco baking machine, which can equalize the hot air flow used to bake tobacco, so that the hot air flow rate and time of tobacco at various locations are consistent, ensuring that the degree of baking of tobacco at various locations is consistent.

[0005] To this end, the present invention provides a hot air flow equalizing device for a tobacco drying machine, which is installed on a frame together with a conveying chain plate for conveying tobacco and an air supply device for blowing hot air to the tobacco for baking, and comprises a flow equalizing box, the flow equalizing box is connected to the air supply device, and the flow equalizing box is configured to equalize the hot air sent by the air supply device;

[0006] A vent hole is provided on the side of the flow equalizing box facing away from the air supply device. The hot air delivered by the air supply device first passes through the flow equalizing box to be evenly distributed and then flows to the tobacco through the vent holes on the flow equalizing box to bake the tobacco.

[0007] Furthermore, the flow balancing box includes an upper surface, a lower surface and a side surface, the vent hole is opened on the upper surface of the flow balancing box, the air supply device is located on one side of the lower surface of the flow balancing box, and the area of ​​the upper surface of the flow balancing box is larger than the area of ​​the lower surface of the flow balancing box;

[0008] Along the direction from the upper surface to the lower surface, the side surface of the current balancing box is gradually inclined toward the vertical center line of the current balancing box.

[0009] Furthermore, the side surface of the flow balancing box includes four inclined side surfaces, and the flow balancing box is trapezoidal in design.

[0010] Furthermore, the ventilation holes are provided in plurality, and the plurality of ventilation holes are evenly distributed on the upper surface of the flow balancing box.

[0011] Further, the flow balancing box is located at the lower side of the conveying chain plate, and the upper surface of the flow balancing box is located at the side facing the conveying chain plate;

[0012] The conveying chain plate is provided with a plurality of small holes, and the plurality of small holes are evenly distributed on the conveying chain plate, and the small holes are configured to convey the hot air sent out by the flow equalizing box to the tobacco.

[0013] Furthermore, a brush is provided at the edge of the upper surface of the flow balancing box, the brush abuts against the conveying chain plate, and the distance between the upper surface of the flow balancing box and the conveying chain plate is less than or equal to the length of the brush.

[0014] Furthermore, a cleaning window is provided on the flow balancing box, and a window door is installed in conjunction with the cleaning window, and the window door is configured to open or close the cleaning window.

[0015] Furthermore, the flow equalizing box has a double-layer design, including an inner layer and an outer layer, and heat insulation cotton is arranged between the inner layer and the outer layer.

[0016] Furthermore, the diameter of the multiple small holes on the conveying chain plate is set to 2 mm, and the distance between two adjacent small holes is 4 mm.

[0017] In the present invention, the main function of the flow equalizing box is to transmit the hot air blown out by the air supply device, and after equalizing the hot air, it is passed into the baking oven to bake the tobacco on the conveying chain plate; and the equalizing method is mainly to open vents on the flow equalizing box, and the hot air flows into the baking oven through the vents and is evenly distributed.

[0018] Compared with the prior art, the present invention has substantial features and progress, which are mainly manifested in: 1) The flow equalizing box is designed in a trapezoidal shape, and the air supply device is located on the side with a relatively small cross-sectional area. The hot air sent into the flow equalizing box by the air supply device gradually diffuses from the small area to the side with a larger area, and the hot air is evenly distributed during the diffusion process; 2) A plurality of ventilation holes are provided on the surface of the flow equalizing box facing the conveying chain plate, and the hot air is evenly distributed again into the baking oven through the ventilation holes to bake the tobacco on the conveying chain plate, that is, the ventilation holes on the flow equalizing box complete the secondary equalization of the hot air; 3) A plurality of small holes are provided on the conveying chain plate, and the hot air flowing out of the flow equalizing box is heated by the ventilation holes. The wind enters the baking box through the small holes on the conveyor chain plate to bake the tobacco. The multiple small holes on the conveyor chain plate perform three-level equalization of the hot air, which makes the hot air baking the tobacco more effective; 4) A brush is provided, which will block the gap between the conveyor chain plate and the equalization box to prevent the hot air from overflowing and reduce the loss of heat source; 5) A cleaning window is provided on the equalization box to facilitate cleaning of the equalization box. The structure is simple and easy to operate; 6) The equalization box adopts a double-layer insulation design, and insulation cotton is provided between the inner and outer layers. While reducing the loss of heat source, it avoids the situation where heat is transferred to the outer layer and causes burns to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Hereinafter, some specific embodiments of the present invention will be described in detail with reference to the accompanying drawings and embodiments in a non-limiting manner. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale.

[0020] Figure 1 It is a structural schematic diagram of a tobacco baking machine;

[0021] Figure 2 It is a structural schematic diagram of a flow equalizing box in a hot air flow equalizing device of a tobacco baking machine of the present invention;

[0022] Figure 3 A is a partial enlarged view of the hot air uniform flow device of the tobacco baking machine of the present invention;

[0023] Figure 4 It is an enlarged view B of the uniform distribution of the flow equalizing box in the hot air flow equalizing device of the tobacco roasting machine of the present invention.

[0024] Among them, 1. flow equalizing box; 11. lower surface; 12. side; 13. upper surface; 2. air supply device; 3. conveying chain plate; 31. small hole; 4. vent hole; 5. brush; 6. window and door. DETAILED DESCRIPTION

[0025] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention.

[0026] Figure 1 It is a schematic diagram of the structure of a tobacco baking machine. Figure 1 As shown, the tobacco baking machine includes a conveying chain plate 3 for conveying tobacco and an air supply device 2 for conveying hot air to the tobacco for baking, and also includes a flow equalizing box 1, which is used to equalize the hot air delivered by the air supply device 2, and then convey the equalized hot air to the tobacco for baking.

[0027] Figure 2 The figure is a schematic diagram of the structure of the flow balancing box 1 in the hot air flow balancing device of the tobacco baking machine of the present invention. Figure 2 It can be known that the flow equalizing box 1 includes an upper surface 13, a lower surface 11 and a side surface 12, and the flow equalizing box 1 is connected to the air supply device 2, the air supply device 2 is arranged on one side of the lower surface 11 of the flow equalizing box and passes through the lower surface 11 to be connected to the flow equalizing box 1, and the hot air sent out by the air supply device 2 first enters the flow equalizing box 1, and the flow equalizing box 1 equalizes the hot air, and then the hot air flows out of the flow equalizing box 1 to bake the tobacco. A further implementation method of the flow equalizing box 1 of the present invention is that the side surface 12 of the flow equalizing box 1 is an inclined surface, and along the direction of the upper surface 13 of the flow equalizing box 1 to the lower surface 11 of the flow equalizing box 1, the side surface 12 of the flow equalizing box 1 gradually tilts toward the vertical center line direction of the flow equalizing box 1, and the area of ​​the upper surface 13 of the flow equalizing box 1 is larger than the area of ​​the lower surface 11 of the flow equalizing box 1. At this time, the hot air sent out by the air supply device 2 first enters the small area of ​​the flow equalizing box 1, and then gradually diffuses to the side with a larger area, and the hot air is evenly distributed during the gradual diffusion process. The flow equalizing box 1 can be configured as a cone or a trapezoid. The present invention preferably uses a trapezoidal design, that is, the side surfaces 12 are four side surfaces, which are arranged opposite to each other in pairs.

[0028] In order to make the hot air have a better effect on baking the tobacco, the hot air should be evenly distributed. The present invention is further designed to open a plurality of vents 4 on the upper surface 13 of the flow equalizing box 1. The plurality of vents 4 are evenly distributed on the upper surface 13 of the flow equalizing box 1. The hot air diffused and evenly distributed in the flow equalizing box 1 flows to the tobacco to bake the tobacco through the plurality of vents 4. The plurality of vents 4 can perform secondary even flow on the hot air, improve the even flow effect of the hot air, and thus improve the baking quality of the tobacco.

[0029] A further embodiment of the present invention is that a plurality of small holes 31 are provided on the conveying chain plate 3, and the plurality of small holes 31 are evenly distributed on the conveying chain plate 3. The flow equalizing box 1 is located at the lower side of the conveying chain plate 3. Therefore, the hot air with equal flow in the flow equalizing box 1 will first pass through the conveying chain plate 3 and then bake the tobacco. Therefore, the hot air will pass through the small holes 31 on the conveying chain plate 3 again, and then reach the tobacco to bake the tobacco. The small holes 31 on the conveying chain plate 3 again equalize the hot air, so that the tobacco baking machine described in the present invention has a three-level equalization function for hot air, thereby improving the baking quality of the tobacco. A preferred embodiment of the present invention is that the diameter of the small holes is 2 mm, and the distance between two adjacent small holes is 4 mm.

[0030] Around the upper surface 13 of the flow equalizing box 1, a brush 5 is provided. The brush 5 includes a brush carrier and bristles arranged on the brush carrier. The length of the bristles on the brush 5 is greater than or equal to the distance between the upper surface 13 of the flow equalizing box 1 and the conveying chain plate 3. When the conveying chain plate 3 sags due to gravity, the bristles will bend and drill into the gap where the conveying chain plate 3 and the flow equalizing box 1 contact, avoiding hot air from overflowing from the gap, thereby reducing the loss of heat source. The brush 5 is made of PP material, which has the characteristics of high temperature resistance and wear resistance, and can increase the service life of the brush 5.

[0031] A further embodiment of the present invention is that a cleaning window is provided on the side 12 of the flow equalizing box 1, and a window door 6 is installed in cooperation with the cleaning window. The window door 6 is detachably installed on the side 12, and the window door 6 is used to open or close the cleaning window. When it is necessary to clean the inside of the flow equalizing box 1, the window door 6 can be opened, and the operator cleans the inside through the cleaning window, which has a simple structure and is easy to operate. A preferred embodiment of the present invention is that cleaning windows are provided on two opposite sides 12 of the flow equalizing box 1, so that it is more convenient to clean the inside of the flow equalizing box 1.

[0032] Since hot air will be transmitted from the inside to the outside during the tobacco baking process, the operator may get burned if he is not careful. Therefore, a further implementation of the present invention is that the flow equalizing box 1 adopts a double-layer design, including an inner layer and an outer layer, and heat insulating cotton is arranged between the inner layer and the outer layer. The heat insulating cotton can reduce the heat transmitted from the inner layer to the outer layer, so that the temperature of the outer layer of the flow equalizing box 1 will not be too high, thereby avoiding the situation where the operator is burned, and the safety performance is relatively high.

[0033] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A hot air flow equalizing device for a tobacco drying machine, which is installed on a frame of the tobacco drying machine together with a conveying chain plate for conveying tobacco and an air supply device for blowing hot air to the tobacco for drying, and is characterized in that A flow balancing box is included, the flow balancing box is connected to the air supply device, and the flow balancing box is configured to balance the hot air delivered by the air supply device; The flow equalizing box is provided with a plurality of vents on a side facing away from the air supply device, and the hot air delivered by the air supply device first passes through the flow equalizing box to be equalized, and then flows to the tobacco through the plurality of vents on the flow equalizing box to bake the tobacco; The flow balancing box includes an upper surface, a lower surface and a side surface, the vent hole is opened on the upper surface of the flow balancing box, the air supply device is located on one side of the lower surface of the flow balancing box, and the area of ​​the upper surface of the flow balancing box is larger than the area of ​​the lower surface of the flow balancing box; Along the direction from the upper surface to the lower surface, the side surface of the current equalizing box is gradually inclined toward the vertical center line of the current equalizing box; The vent holes are arranged in a plurality, and the plurality of vent holes are evenly distributed on the upper surface of the flow equalizing box; The flow balancing box is located at the lower side of the conveying chain plate, and the upper surface of the flow balancing box is located at the side facing the conveying chain plate; The conveying chain plate is provided with a plurality of small holes, and the plurality of small holes are evenly distributed on the conveying chain plate, and the small holes are configured to convey the hot air sent out by the flow equalizing box to the tobacco; The flow equalizing box has a double-layer design, including an inner layer and an outer layer, and heat insulation cotton is arranged between the inner layer and the outer layer.

2. The hot air uniform flow device for a tobacco roasting machine according to claim 1, characterized in that: The side surface of the flow balancing box includes four inclined side surfaces, and the flow balancing box is designed in a trapezoidal shape.

3. The hot air uniform flow device for a tobacco roasting machine according to claim 1, characterized in that: A brush is provided at the edge of the upper surface of the flow balancing box, the brush abuts against the conveying chain plate, and the distance between the upper surface of the flow balancing box and the conveying chain plate is less than or equal to the length of the brush.

4. The hot air uniform flow device for a tobacco roasting machine according to claim 1, characterized in that: A cleaning window is provided on the flow equalizing box, and a window door is installed in cooperation with the cleaning window, and the window door is configured to open or close the cleaning window.

5. The hot air flow equalization device for a tobacco baking machine according to claim 1, characterized in that: The diameter of the multiple small holes on the conveying chain plate is set to 2 mm, and the distance between two adjacent small holes is 4 mm.

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