A circulating air duct for a dryer heater

Abstract

The utility model provides a kind of for drying machine heating's circulating air flue, it is related to bamboo product processing technical field, solve the existing heavy bamboo silk drying equipment, lack of the utilization of waste heat, heat utilization rate and efficiency are low, the problem of increasing production cost.The utility model includes first drying room and second drying room, the first drying room includes the first return air passage of upper layer and the first drying area for placing the bamboo product to be dried of lower layer, the second drying room includes the second return air passage of upper layer and the second drying area for placing the bamboo product to be dried of lower layer, the other end of the first return air passage is communicated with the upper portion of first equipment room by first return flow return air port, the other end of the second return air passage is communicated with the upper portion of second equipment room by second return flow return air port.The utility model has the beneficial effect that waste heat air can return to the air inlet end of fan to form circulation, heat is fully utilized, energy is saved, heat efficiency is high, drying effect is good.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a circulating air duct for heating a dryer. Background Technology

[0002] Reconstituted bamboo filaments are a new type of bamboo material that is reorganized and reinforced. Specifically, reconstituted bamboo filaments are made by processing bamboo into long strips, filaments, or crushing them into bundles, drying them, impregnating them with resin, drying them again to the required moisture content, and then laying them in a mold for high-temperature and high-pressure thermosetting to form profiles.

[0003] The processing of reconstituted bamboo strips requires drying equipment. However, existing reconstituted bamboo strip drying equipment lacks the utilization of waste heat, resulting in low heat utilization rate and efficiency, which leads to poor drying effect and increased production costs. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing bamboo fiber drying equipment lacks the utilization of waste heat, has low heat utilization rate and efficiency, resulting in poor drying effect and increased production cost.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A circulating air duct for heating a dryer, characterized in that: it includes a first drying chamber and a second drying chamber disposed on one side of the first drying chamber, a first equipment room and a second equipment room are respectively disposed at the same end of the first drying chamber and the second drying chamber, the first drying chamber includes an upper first return air duct and a lower first drying area for placing bamboo products to be dried, the second drying chamber includes an upper second return air duct and a lower second drying area for placing bamboo products to be dried, and the first drying area and the second drying area are interconnected;

[0007] The first drying zone is provided with a first air outlet on one end face facing the first equipment room. At least one first fan is provided in the lower part of the first equipment room. The second drying zone is provided with a second air outlet on one end face facing the second equipment room. At least one second fan is provided in the lower part of the second equipment room. A heating coil is provided between the first fan and the second fan and the first air outlet and the second air outlet.

[0008] A first guide baffle is provided on the end face of the first drying zone away from the first equipment room. A first return air outlet is provided on the end face of the first drying zone away from the first equipment room, which is connected to one end of the first return air channel. The other end of the first return air channel is connected to the upper part of the first equipment room through the first return air outlet.

[0009] A second flow guide baffle is provided on the end face of the second drying zone away from the second equipment room. At least one layer of flow equalization plate is provided in the second drying zone along the length of the second return air channel. A second return air outlet is provided at the end of the second drying zone away from the second equipment room, which is connected to one end of the second return air channel. The other end of the second return air channel is connected to the upper part of the second equipment room through the second return air outlet.

[0010] A further improvement is that a first material outlet is provided on the side of the first drying chamber away from the second drying chamber.

[0011] A further improvement is that a second material inlet is provided on the side of the second drying chamber away from the first drying chamber. One of the first and second material inlets is a feed inlet, and the other is a discharge outlet.

[0012] A further improvement is that a heat exchange fluid inlet is provided at one end of the heating coil, and a heat exchange fluid outlet is provided at the other end of the heating coil.

[0013] A further improvement is that the flow equalization plate is provided with several flow equalization holes that are vertically and evenly distributed.

[0014] A further improvement is that an openable air vent is provided on one side wall of both the first and second equipment rooms.

[0015] Compared with existing technologies, the above technical solution has the following advantages:

[0016] With the return air duct in place, the fan delivers air to the drying area through the heating coil. One end of the return air duct is connected to the air inlet of the fan, and the other end is connected to the air outlet of the drying area. In this way, the waste heat air can return to the air inlet of the fan to form a cycle, making full use of heat, saving energy, and achieving high thermal efficiency and good drying effect.

[0017] It is equipped with a flow equalizer to ensure even hot air flow and more uniform drying. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure on the right side of this utility model;

[0021] Figure 3 This is a top view of the internal structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal three-dimensional structure of this utility model.

[0023] Explanation of reference numerals in the attached drawings: First drying chamber 1, First material inlet 11, First return air channel 12, First guide baffle 13, First return air outlet 14, First return air inlet 15, First air outlet 16; Second drying chamber 2, Second material inlet 21, Second return air channel 22, Second guide baffle 23, Second return air outlet 24, Second return air inlet 25, Second air outlet 26, First equipment room 3, First fan 31, Second equipment room 4, Second fan 41, Heating coil 5, Heat exchange fluid inlet 51, Heat exchange fluid outlet 52, Flow equalization plate 6. Detailed Implementation

[0024] See Figures 1-4 As shown, the technical solution adopted in this specific embodiment is: a circulating air duct for heating a dryer, including a first drying chamber 1 and a second drying chamber 2 disposed on one side of the first drying chamber 1. A first equipment chamber 3 and a second equipment chamber 4 are respectively disposed at the same end of the first drying chamber 1 and the second drying chamber 2. The first drying chamber 1 includes an upper first return air duct 12 and a lower first drying area for placing bamboo products to be dried. The second drying chamber 2 includes an upper second return air duct 22 and a lower second drying area for placing bamboo products to be dried. The first drying area and the second drying area are interconnected.

[0025] The first drying zone is provided with a first air outlet 16 on one end face facing the first equipment room 3. At least one first fan 31 is provided in the lower part of the first equipment room 3. The second drying zone is provided with a second air outlet 26 on one end face facing the second equipment room 4. At least one second fan 41 is provided in the lower part of the second equipment room 4. A heating coil 5 is provided between the first fan 31 and the second fan 41 and the first air outlet 16 and the second air outlet 26.

[0026] A first guide baffle 13 is provided on the end face of the first drying zone away from the first equipment room 3. A first return air outlet 14 is provided on the end face of the first drying zone away from the first equipment room 3, which is connected to one end of the first return air channel 12. The other end of the first return air channel 12 is connected to the upper part of the first equipment room 3 through the first return air outlet 15.

[0027] A second guide baffle 23 is provided on the end face of the second drying zone away from the second equipment room 4. At least one layer of flow equalization plate 6 is provided in the second drying zone along the length of the second return air channel 22. A second return air outlet 24 is provided on the end of the second drying zone away from the second equipment room 4, which is connected to one end of the second return air channel 22. The other end of the second return air channel 22 is connected to the upper part of the second equipment room 4 through the second return air outlet 25.

[0028] The first material inlet 11 is provided on the side of the first drying chamber 1 that is away from the second drying chamber 2.

[0029] The second drying chamber 2 has a second material inlet 21 on the side away from the first drying chamber 1. One of the first material inlet 11 and the second material inlet 21 is a feed inlet and the other is a discharge outlet.

[0030] The heating coil 5 has a heat exchange fluid inlet 51 at one end and a heat exchange fluid outlet 52 at the other end.

[0031] The flow equalization plate 6 has several vertically and evenly distributed flow equalization holes.

[0032] Both the first equipment room 3 and the second equipment room 4 have openable and closable air vents on one side wall. These vents open to supply air to the fan when drying begins and close after the air in the equipment room has circulated.

[0033] The working principle of this utility model is as follows: During use, the bamboo products to be dried enter the drying zone of the drying room through the first material inlet (or the second material inlet). The first and second fans are started, and the blown air is converted into hot air through the heating coil. The hot air enters the drying zone through the air outlet to dry the bamboo products. The hot air blown by the first fan passes through the first drying zone, is blocked by the first guide baffle, and then flows upward through the first return air outlet into the first return air channel. It then flows back to the first equipment room through the first return air outlet. The hot air blown by the second fan passes through the second drying zone, where it is evenly distributed by the flow equalization plate, resulting in more uniform drying. It continues to be blocked by the second guide baffle, then flows upward through the flow equalization plate and enters the second return air channel through the second return air outlet. It then flows back to the second equipment room through the second return air outlet. In this way, the residual hot air can return to the fan inlet to form a circulation, fully utilizing heat, saving energy, achieving high thermal efficiency, and providing excellent drying results.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A circulating air duct for heating in a dryer, characterized in that: It includes a first drying room and a second drying room located on one side of the first drying room. A first equipment room and a second equipment room are respectively located at the same end of the first drying room and the second drying room. The first drying room includes an upper first return air duct and a lower first drying area for placing bamboo products to be dried. The second drying room includes an upper second return air duct and a lower second drying area for placing bamboo products to be dried. The first drying area and the second drying area are interconnected. The first drying zone is provided with a first air outlet on one end face facing the first equipment room. At least one first fan is provided in the lower part of the first equipment room. The second drying zone is provided with a second air outlet on one end face facing the second equipment room. At least one second fan is provided in the lower part of the second equipment room. A heating coil is provided between the first fan and the second fan and the first air outlet and the second air outlet. A first guide baffle is provided on the end face of the first drying zone away from the first equipment room. A first return air outlet is provided on the end face of the first drying zone away from the first equipment room, which is connected to one end of the first return air channel. The other end of the first return air channel is connected to the upper part of the first equipment room through the first return air outlet. A second flow guide baffle is provided on the end face of the second drying zone away from the second equipment room. At least one layer of flow equalization plate is provided in the second drying zone along the length of the second return air channel. A second return air outlet is provided at the end of the second drying zone away from the second equipment room, which is connected to one end of the second return air channel. The other end of the second return air channel is connected to the upper part of the second equipment room through the second return air outlet.

2. The circulating air duct for heating a dryer according to claim 1, characterized in that: The first material outlet is located on the side of the first drying chamber that is away from the second drying chamber.

3. A circulating air duct for heating a dryer according to claim 1, characterized in that: The second drying chamber has a second material outlet on the side away from the first drying chamber.

4. A circulating air duct for heating a dryer according to claim 1, characterized in that: One end of the heating coil is provided with a heat exchange fluid inlet, and the other end of the heating coil is provided with a heat exchange fluid outlet.

5. A circulating air duct for heating a dryer according to claim 1, characterized in that: The flow equalization plate is provided with a number of flow equalization holes that are vertically and evenly distributed.

6. A circulating air duct for heating a dryer according to claim 1, characterized in that: Both the first and second equipment rooms have openable and closable air vents on one side wall.

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