Waste heat regeneration type zero-energy-consumption drying room

Abstract

The waste heat regeneration type zero-energy-consumption drying room comprises a drying room, a gas inlet main pipe and a gas outlet main pipe are arranged on the two opposite sides in the drying room in parallel, and the input end of the gas inlet main pipe is connected with a tail gas exhaust port of a furnace body through a smoke pipeline; the gas inlet main pipe and the gas outlet main pipe are communicated in parallel through a plurality of heat exchange pipes to form a closed flue gas channel; according to the device, four breakthroughs of zero energy consumption input, zero manual carrying, zero bamboo damage and zero maintenance stagnation in the bamboo drying link are achieved, and the green production normal form of industrial-grade bamboo drying is thoroughly reconstructed.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, specifically a waste heat regeneration zero-energy drying oven. Background Technology

[0002] In the bamboo charcoal production process, bamboo needs to be pre-dried to ensure the quality of carbonization. In the current process, the drying room and the carbonization furnace operate independently, resulting in double energy waste. The drying room has high energy consumption, and the traditional heating method of the drying room (electric heating / boiler) requires additional fuel to maintain the drying temperature, resulting in high energy costs. Meanwhile, the high-temperature exhaust gas generated by the carbonization furnace is directly emitted, which also wastes heat energy. Summary of the Invention

[0003] The purpose of this invention is to provide a waste heat regeneration zero-energy drying oven to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a waste heat regeneration zero-energy drying oven, comprising a drying chamber, wherein an air inlet pipe and an air outlet pipe are arranged parallel to each other on opposite sides inside the chamber, the input end of the air inlet pipe is connected to the exhaust port of the furnace body through a flue gas pipe; the air inlet pipe and the air outlet pipe are connected in parallel by multiple heat exchange pipes to form a closed flue gas channel; the bamboo material to be dried is placed in the drying chamber and dried by the conduction of waste heat from the flue gas.

[0005] Furthermore, a support is provided in the drying chamber, the support is located above the heat exchange tubes, the bottom end of the support is provided with a support foot, the support foot passes through the gap between the heat exchange tubes and connects to the bottom of the drying chamber, the top of the support is provided with a first track, the first track is provided with a track trolley, the track trolley moves horizontally along the track.

[0006] Furthermore, the drying chamber is provided with a feed door and a discharge door on the front and rear sides respectively; a movable frame is provided on the outside of the drying chamber, and a second track is provided at the top of the movable frame, which can be moved to connect with the end of the first track.

[0007] Furthermore, an air outlet pipe is connected to the upper rear end of the main air outlet pipe, and the other end of the air outlet pipe extends out of the drying chamber. Sealing discs are detachably connected to the rear end of the main air inlet pipe and both the front and rear ends of the main air outlet pipe.

[0008] Furthermore, the left and right ends of the heat exchange tube are detachably connected to the inlet main pipe and the outlet main pipe via flanges, respectively.

[0009] Furthermore, the main intake pipe and the flue gas duct are detachably connected via a flange, and the portion of the main intake pipe extending outside the drying room and the outer surface of the flue gas duct are both covered with insulation cotton.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This device efficiently recovers waste heat from the carbonization furnace exhaust gas through a closed flue gas channel. The insulation cotton and flange sealing structure minimize heat loss, achieving complete self-sufficiency in energy input. The heat exchange tubes indirectly heat the entire drying chamber space through thermal radiation and air convection. The bamboo is suspended on the support track trolley to avoid direct contact with the heat source. Gradient temperature control ensures uniform dehydration and completely eliminates the risk of charring and cracking. Combined with the tube-type support design and the seamless connection system of the moving frame double track, the bamboo is fully mechanized from feeding and drying to discharging, overturning the traditional manual handling mode and achieving a zero-energy, zero-damage, and zero-pollution industrial drying mode for bamboo. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a waste heat regeneration zero-energy drying oven according to this utility model;

[0013] Figure 2 This is a structural disassembly diagram of a waste heat regeneration zero-energy drying oven according to this utility model;

[0014] Figure 3 This is a top view of the heat exchange tube of this utility model.

[0015] In the diagram, the components are: drying chamber-1, main air inlet pipe-2, main air outlet pipe-3, heat exchange pipe-4, support-5, support leg-6, first track-7, track trolley-8, feed door-9, discharge door-10, moving frame-11, second track-12, air outlet pipe-13, sealing plate-14, and flange-15. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 3As shown, a waste heat regeneration zero-energy drying oven includes a drying chamber 1, inside which an air inlet pipe 2 and an air outlet pipe 3 are arranged in parallel on opposite sides. The input end of the air inlet pipe 2 is connected to the tail gas discharge port of the furnace body through a flue gas pipe. The air inlet pipe 2 and the air outlet pipe 3 are connected in parallel by multiple heat exchange pipes 4 to form a closed flue gas channel. The bamboo material to be dried is placed in the drying chamber 1 and dried by the conduction of waste heat from the flue gas. The air inlet pipe 2 and the flue gas pipe are detachably connected by a flange. The part of the air inlet pipe 2 extending out of the drying chamber 1 and the outer surface of the flue gas pipe are covered with heat insulation cotton. The upper part of the rear end of the air outlet pipe 3 is connected to an air outlet pipe 13, and the other end of the air outlet pipe 13 extends out of the drying chamber 1.

[0018] The high-temperature exhaust gas generated by the carbonization furnace is transported to the main air inlet pipe 2 of the drying chamber 1 through the insulated pipe connected by the flange. The insulation cotton reduces the heat loss of the pipeline. The high-temperature flue gas flows in the closed channel of "main air inlet pipe 2 → heat exchange pipe 4 → main air outlet pipe 3" and is finally discharged through the air outlet pipe 13. The heat exchange pipe 4 releases heat energy into the interior space of the drying chamber through thermal radiation and air convection. The air in the drying chamber is evenly heated to the safe drying temperature range of bamboo. The heated air surrounds the surface of the bamboo and is forced to convect. Heat penetrates from the surface of the bamboo to the interior, and the moisture gradually evaporates.

[0019] In this embodiment, a support 5 is installed inside the drying chamber 1, located above the heat exchange tubes 4. A support leg 6 is installed at the bottom of the support 5, passing through the gap between the heat exchange tubes 4 and connecting to the bottom of the drying chamber 1. A first track 7 is installed at the top of the support 5, and a track trolley 8 is installed on the first track 7, moving horizontally along the track. A feed door 9 and a discharge door 10 are respectively installed on the front and rear sides of the drying chamber 1. A movable frame 11 is installed on the outside of the drying chamber 1, and a second track 1 is installed at the top of the movable frame 11. 2. The second track 12 can be moved to connect with the end of the first track 7. After opening the feed door 9 or the discharge door 10, the moving frame 11 is moved to the opening position so that the first track 7 and the second track 12 are connected. The bamboo material is hoisted and placed on the track trolley 8. By pushing the track trolley 8 to move horizontally, the bamboo material is sent to the drying room. After drying, the track trolley 8 is pulled onto the moving frame 11. The dried bamboo material can then be sent to the next process by pushing the moving frame 11, achieving zero manual handling.

[0020] In this embodiment, the rear end of the intake pipe 2 and both ends of the exhaust pipe 3 are detachably connected to sealing discs 14. The left and right ends of the heat exchange tube 4 are detachably connected to the intake pipe 2 and the exhaust pipe 3 respectively through flanges. After a period of use, tar condensate and dust will remain in each pipeline. If they are not cleaned in time, they will affect the airflow. At this time, the flanges of the intake pipe 2 and the exhaust pipe 3 and the detachable sealing discs 14 are removed, and the connection ends of the heat exchange tube 4 are separated. The intake pipe 2, the exhaust pipe 3 and the heat exchange tube 4 can then be cleaned. After cleaning, they can be reinstalled.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A waste heat regeneration zero-energy drying oven, characterized in that: The equipment includes a drying chamber, inside which are parallel air inlet pipes and air outlet pipes arranged on opposite sides. The input end of the air inlet pipe is connected to the exhaust port of the furnace body through a flue gas pipe. The air inlet pipe and the air outlet pipe are connected in parallel by multiple heat exchange pipes to form a closed flue gas channel. The bamboo material to be dried is placed in the drying chamber and dried by the conduction of waste heat from the flue gas.

2. The waste heat regeneration zero-energy drying oven according to claim 1, characterized in that: The drying chamber is equipped with a support frame located above the heat exchange tubes. The bottom of the support frame is provided with a support leg that passes through the gap between the heat exchange tubes and connects to the bottom of the drying chamber. The top of the support frame is provided with a first track, and a track trolley is provided on the first track. The track trolley moves horizontally along the track.

3. The waste heat regeneration zero-energy drying oven according to claim 2, characterized in that: The drying chamber is provided with a feed door and a discharge door on the front and rear sides respectively; a movable frame is provided on the outside of the drying chamber, and a second track is provided at the top of the movable frame, which can be moved to connect with the end of the first track.

4. The waste heat regeneration zero-energy drying oven according to claim 1, characterized in that: The upper rear end of the main exhaust pipe is connected to an exhaust pipe, and the other end of the exhaust pipe extends out of the drying chamber. The rear end of the main intake pipe and both ends of the main exhaust pipe are detachably connected to sealing discs.

5. The waste heat regeneration zero-energy drying oven according to claim 1, characterized in that: The left and right ends of the heat exchange tube are detachably connected to the inlet main pipe and the outlet main pipe via flanges, respectively.

6. The waste heat regeneration zero-energy drying oven according to claim 1, characterized in that: The main air intake pipe and the flue gas duct are detachably connected by a flange. The portion of the main air intake pipe extending outside the drying room and the outer surface of the flue gas duct are both covered with insulation cotton.

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