Energy-saving wood chip treatment device

Abstract

The utility model discloses an energy-saving wood chip treatment device. The energy-saving wood chip treatment device comprises a boiler, a stirrer and an air blower. The boiler combustion chamber is provided with a smoke exhaust pipe with an axial flow fan; the wall thickness of the stirrer is hollow to form a first chamber (with a purification exhaust pipe) and a second chamber (with ventilated inner walls), the two chambers are connected with a smoke exhaust pipe through an electromagnetic valve pipeline, and a stirring shaft is provided with adaptive stirring blades; an air duct of the blower is connected with the stirring chamber and a boiler feed port through a discharge pipeline. High-temperature flue gas is switched and introduced into the double cavities through the smoke exhaust pipe; when the high-temperature flue gas is introduced into the first cavity, the hollow wall is used for conducting heat and drying wood chips; when the high-temperature flue gas is introduced into the second cavity, constant-temperature and flame-proof effects are realized through the ventilation structure; and the dried wood chips are conveyed to the combustion chamber for combustion by the air blower. According to the wood chip treatment device, the problems that wet wood chips cannot be directly incinerated and the manual feeding efficiency is low can be solved; automatic drying-feeding integration is achieved, and pollution is reduced through flue gas purification; and boiler flue gas waste heat is recycled, and fuel consumption and labor cost are remarkably reduced.

Description

Technical Field

[0001] This application relates to the field of wood production and manufacturing technology, and more specifically, to an energy-saving wood chip processing device. Background Technology

[0002] In the process of wood production, a large amount of byproducts such as sawdust and sawdust are inevitably generated. If these sawdust and sawdust are not treated, they not only occupy a lot of space but may also cause environmental pollution. Meanwhile, the wood production process requires boilers to generate high-pressure steam for steam pressing of wood boards, thus achieving rapid board forming. However, since sawdust and sawdust are usually in a moist state, they cannot be directly added to the boiler for combustion, which not only affects the boiler's combustion efficiency but also increases fuel consumption. Furthermore, the addition of sawdust and sawdust often requires manual labor, which consumes a significant amount of manpower and increases production costs. Based on these problems, there is an urgent need to develop a highly efficient sawdust processing device that can dry the moist sawdust and sawdust, allowing them to be smoothly added to the boiler for combustion, while simultaneously achieving automated addition, thereby significantly reducing labor costs and improving production efficiency. Summary of the Invention

[0003] This application provides an energy-saving wood chip processing apparatus, including a boiler, an agitator, and a blower.

[0004] The boiler is equipped with a combustion chamber, which has a feed inlet and an exhaust pipe with an axial flow fan.

[0005] The agitator includes a mixing chamber, a mixing shaft, and a mixing motor. The mixing chamber has a hollow wall design to form a first chamber and a second chamber. The first chamber is equipped with an exhaust pipe with an air purifier, and the inner wall of the second chamber is equipped with a breathable structure. The first chamber and the second chamber are respectively connected to the exhaust pipe through pipes with solenoid valves. The mixing shaft passes through the mixing chamber and is equipped with matching mixing blades.

[0006] The blower includes an air duct and a blower motor. One end of the air duct is connected to the mixing chamber via a discharge pipe with a solenoid valve, and the other end is connected to the feed inlet of the boiler.

[0007] The high-temperature flue gas from the exhaust pipe can be switched to either the first chamber or the second chamber to dry the wood chips in the mixing chamber; after drying, the wood chips are transported to the combustion chamber by the blower.

[0008] In some embodiments, a first temperature sensor is provided in the combustion chamber, and the blower motor is controlled by the first temperature sensor.

[0009] In some embodiments, the blower motor adjusts the airflow intensity based on the airflow demand fed back by the first temperature sensor, and controls the distribution of fuel in the combustion chamber based on the airflow intensity.

[0010] In some embodiments, a second temperature sensor is provided in the stirring chamber, and the switching of the high-temperature flue gas from the exhaust pipe into the first chamber or the second chamber is controlled by the second temperature sensor.

[0011] In some embodiments, the stirring chamber includes a cylindrical portion located in a first chamber and a conical portion located in a second chamber, the first chamber and the second chamber being independent of each other.

[0012] In some embodiments, the inner conical surface of the second chamber is a breathable structure, allowing high-temperature flue gas to permeate into the mixing chamber while preventing sawdust from entering the chamber.

[0013] In some embodiments, the stirring blades employ spiral blades in the cylindrical portion and a scraper structure in the conical portion to achieve wood chips tumbling up and down and bottom discharge to prevent clogging.

[0014] In some embodiments, during the drying stage, the high-temperature flue gas from the combustion chamber is entirely introduced into the first chamber. When the temperature of the stirring chamber reaches a preset value, the passage to the first chamber is closed and the passage to the second chamber is opened.

[0015] In some embodiments, when the second chamber is opened, the high-temperature flue gas diffuses through the inner cavity of the second chamber and is discharged after being purified by the exhaust pipe.

[0016] The wood chip processing device of this application has a structure that connects the two chambers of the agitator through the flue pipe. It uses the high temperature flue gas from the boiler to switch between the first chamber (drying wood chips) and the second chamber (constant temperature protection), which solves the problem that wet wood chips cannot be directly burned. Combined with the blower's air-powered conveying and the hollow wall heat conduction design of the agitator chamber, it realizes wood chip drying, fire prevention and automated feeding, reduces fuel consumption and labor costs, and the flue gas is purified before being discharged to avoid environmental pollution.

[0017] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0020] Explanation of main component symbols: processing device 100, boiler 10, combustion chamber 11, feed inlet 111, axial flow fan 112, exhaust pipe 113, first temperature sensor 114, steam chamber 12, agitator 20, mixing chamber 21, first chamber 211, second chamber 212, exhaust pipe 213, ventilation structure 214, second temperature sensor 215, discharge pipe 216, mixing shaft 22, mixing blade 221, mixing motor 23, blower 30, air duct 31, blower motor 32. Detailed Implementation

[0021] The embodiments of this application will be further described below with reference to the accompanying drawings. The same or similar reference numerals in the drawings denote the same or similar elements or elements having the same or similar functions throughout.

[0022] Furthermore, the embodiments of this application described below in conjunction with the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting this application.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] Please see Figure 1 This application provides an energy-saving wood chip processing device 100, including a boiler 10, an agitator 20, and a blower 30.

[0025] The boiler 10 is equipped with a combustion chamber 11, which has a feed inlet 111 and a flue pipe 113 with an axial flow fan 112.

[0026] The agitator 20 includes a mixing chamber 21, a mixing shaft 22, and a mixing motor 23. The mixing chamber 21 has a hollow wall design to form a first chamber 211 and a second chamber 212. The first chamber 211 is equipped with an exhaust pipe 213 with an air purifier, and the inner wall of the second chamber 212 is equipped with a ventilated structure 214. The first chamber 211 and the second chamber 212 are respectively connected to the exhaust pipe 113 through pipes with solenoid valves. The mixing shaft 22 passes through the mixing chamber 21 and is equipped with matching mixing blades 221.

[0027] The blower 30 includes an air duct 31 and a blower motor 32. One end of the air duct 31 is connected to the mixing chamber 21 via a discharge pipe with a solenoid valve, and the other end is connected to the feed inlet 111 of the boiler 10.

[0028] The high-temperature flue gas from the exhaust pipe 113 can be switched to either the first chamber 211 or the second chamber 212 to dry the wood chips in the mixing chamber 21; after drying, the wood chips are transported to the combustion chamber 11 by the blower 30.

[0029] The sawdust processing device 100 of this application has a dual-chamber structure connected to the agitator 20 through the flue pipe 113. It utilizes the high-temperature flue gas from the boiler 10 to switch between the first chamber 211 (dry sawdust) and the second chamber 212 (constant temperature protection), solving the problem that wet sawdust cannot be directly burned. Combined with the wind-powered conveying of the blower 30 and the heat conduction design of the hollow wall of the agitator 21, it achieves sawdust drying, fire prevention, and automated feeding, reducing fuel consumption and labor costs. At the same time, the flue gas is purified before being discharged, avoiding environmental pollution.

[0030] For details, please continue reading Figure 1 The boiler 10 includes a combustion chamber 11 and a steam chamber 12. The combustion chamber 11 is responsible for burning fuels such as sawdust and wood chips, while the steam chamber 12, located above the combustion chamber 11, is used to generate and store steam. The combustion chamber 11 is equipped with a feed inlet 111 for feeding fuel into the combustion chamber for combustion and forced ventilation to increase oxygen supply, thereby improving combustion efficiency. Simultaneously, the combustion chamber 11 is also equipped with an exhaust pipe 113, which contains an axial flow fan 112 to exhaust the flue gas generated during combustion from the boiler 10, ensuring a clean and stable combustion environment. A first temperature sensor 114 is installed inside the combustion chamber 11 for real-time monitoring and control of temperature changes within the chamber.

[0031] The mixer 20 includes a mixing chamber 21, a mixing shaft 22, and a mixing motor 23. The mixing chamber 21 includes a cylindrical portion located in a first chamber 211 and a conical portion located in a second chamber 212. The first chamber 211 and the second chamber 212 are independent of each other. An exhaust pipe 213 is provided at the upper end of the first chamber 211, and an air purifier (not shown) is installed on the exhaust pipe 213. The conical inner wall of the second chamber 212 is provided with a venting structure 214. The venting structure 214 allows high-temperature flue gas to permeate into the mixing chamber 21 while preventing sawdust from entering the chamber.

[0032] The first chamber 211 and the second chamber 212 are respectively connected to the exhaust pipe 113 via pipes equipped with solenoid valves. The upper end of the mixing chamber 21 is designed to allow material to be fed in, while the bottom of its conical structure is equipped with a discharge pipe 216. A second temperature sensor 215 is installed inside the mixing chamber 21 to monitor temperature changes in real time during the mixing process, ensuring that the entire mixing process is carried out within a suitable temperature range.

[0033] The stirring shaft 22 is coaxially mounted inside the stirring chamber 21, and its length extends through both the cylindrical and conical sections. The stirring blades 221 employ spiral blades in the cylindrical section and a scraper structure in the conical section, enabling the sawdust to tumble up and down and preventing bottom discharge and blockage. The stirring motor 23 drives the stirring shaft 22 to rotate, allowing the stirring blades 221 to move efficiently within the stirring chamber 21, thereby achieving the tumbling of the sawdust.

[0034] Please see Figure 1 The blower 30 includes an air duct 31 and a blower motor 32. One end of the air duct 31 is connected to the conical portion of the mixing chamber 21 via a discharge pipe equipped with a solenoid valve, and the other end is connected to the feed inlet 111 of the boiler 10. The blower motor 32 is mounted on the air duct 31 and its function is to introduce outside air and deliver it to the combustion chamber 11 of the boiler 10. When it is necessary to add material to the boiler 10, simply open the valve of the discharge pipe, and the blower motor 32 is responsible for adjusting the airflow intensity to control the distribution of fuel within the boiler 10. When no material needs to be added, the blower 30 continues to perform its normal blowing function, or adjusts the airflow to ensure complete combustion of the fuel. Feedback from the first temperature sensor 114 controls the rotation of the blower motor 32 to control the airflow.

[0035] Please see Figure 1 In actual operation, the sawdust processing device 100 operates as follows: First, moist sawdust and wood chips are added into the mixing chamber 21 of the mixer 20. The mixing motor 23 starts, driving the mixing shaft 22 and mixing blades 221 to rotate, causing the sawdust to tumble up and down within the mixing chamber 21. Simultaneously, the high-temperature flue gas generated by the combustion chamber 11 of the boiler 10 connects the exhaust pipe 113 to the first chamber 211 of the mixing chamber 21 via a control solenoid valve. The high-temperature flue gas flows into the first chamber 211 through the exhaust pipe 113, while the valve leading to the second chamber 212 is closed. In the second chamber 212, the high-temperature flue gas preheats and dries the sawdust in the mixing chamber 21 through the permeable structure 214. The heat in the flue gas is transferred to the sawdust, causing its moisture to gradually evaporate. The resulting water vapor is discharged through the exhaust pipe 213, and the presence of the sawdust effectively prevents smoke and dust from escaping to the outside, thus purifying the air and reducing environmental pollution.

[0036] During the mixing process, the second temperature sensor 215 continuously monitors the temperature inside the mixing chamber 21 in real time. Once the temperature reaches a preset value (which is lower than the ignition temperature of fuels such as sawdust and wood chips), the system will cut off the high-temperature flue gas flowing into the first chamber 211 by adjusting the solenoid valve, and simultaneously open the valve leading to the second chamber 212. In this way, the high-temperature flue gas can flow into the second chamber 212 and be purified before being discharged through the exhaust pipe 213. This process protects the environment, ensures that the mixing temperature is maintained within a suitable range, and continuously guarantees the drying effect and the stability of the mixing process.

[0037] Once the sawdust has dried to a certain extent, the valve of the discharge pipe is opened. Blower 30 starts, and blower motor 32 draws in outside air and delivers it to air duct 31. The airflow through air duct 31 transports the dried sawdust from the conical section of mixing chamber 21 through the discharge pipe to the feed inlet 111 of boiler 10. Blower motor 32 can adjust the airflow intensity according to actual needs to ensure that the sawdust enters the combustion chamber 11 of boiler 10 evenly.

[0038] Inside the combustion chamber 11 of boiler 10, sawdust is continuously fed in through the feed inlet 111, while a forced ventilation system increases oxygen supply to ensure complete combustion. A first temperature sensor 114 monitors the temperature inside the combustion chamber 11 in real time, allowing the system to adjust the feed rate and blower intensity based on the temperature, ensuring combustion efficiency and stability. The high temperature generated by combustion converts water in the steam chamber 12 into high-pressure steam, which is used in production processes such as the steam pressing of the wood panels. The flue gas generated by combustion is discharged through the exhaust pipe 113 and the axial flow fan 112 into the mixing chamber 21, where the high-temperature flue gas is used for drying, achieving energy recycling and improving the overall energy efficiency of the system.

[0039] Through this collaborative working method, the wood chip processing device 100 achieves the drying, conveying and efficient combustion of wood chips, effectively solving the problems existing in traditional wood chip processing, improving production efficiency, and reducing production costs and environmental impact.

[0040] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0042] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An energy-saving sawdust processing device, characterized in that, include: A boiler, wherein the boiler is provided with a combustion chamber, the combustion chamber being provided with a feed inlet and a flue pipe equipped with an axial flow fan; A mixer includes a mixing chamber, a mixing shaft, and a mixing motor. The mixing chamber has a hollow wall design forming a first chamber and a second chamber. The first chamber is equipped with an exhaust pipe with an air purifier, and the inner wall of the second chamber has a breathable structure. The first chamber and the second chamber are respectively connected to the exhaust pipe through pipes with solenoid valves. The mixing shaft passes through the mixing chamber and is equipped with matching mixing blades. And a blower, the blower including an air duct and a blower motor, one end of the air duct is connected to the mixing chamber via a discharge pipe with a solenoid valve, and the other end is connected to the feed inlet of the boiler; The high-temperature flue gas from the exhaust pipe can be switched to either the first chamber or the second chamber to dry the wood chips in the mixing chamber; after drying, the wood chips are transported to the combustion chamber by the blower.

2. The processing apparatus according to claim 1, characterized in that, A first temperature sensor is installed in the combustion chamber, and the blower motor is controlled by the first temperature sensor.

3. The processing apparatus according to claim 2, characterized in that, The blower motor adjusts the airflow intensity based on the airflow demand fed back by the first temperature sensor, and controls the distribution of fuel in the combustion chamber based on the airflow intensity.

4. The processing apparatus according to claim 1, characterized in that, A second temperature sensor is installed in the mixing chamber, and the switching of the high-temperature flue gas from the exhaust pipe into the first chamber or the second chamber is controlled by the second temperature sensor.

5. The processing apparatus according to claim 4, characterized in that, The stirring chamber includes a cylindrical portion located in the first chamber and a conical portion located in the second chamber, the first chamber and the second chamber being independent of each other.

6. The processing apparatus according to claim 5, characterized in that, The inner conical surface of the second chamber is a breathable structure, which allows high-temperature flue gas to penetrate into the mixing chamber while preventing sawdust from entering the chamber.

7. The processing apparatus according to claim 6, characterized in that, The stirring blades employ spiral blades in the cylindrical section and a scraper structure in the conical section, enabling the sawdust to tumble up and down and preventing blockage at the bottom.

8. The processing apparatus according to claim 4, characterized in that, During the drying stage, the high-temperature flue gas from the combustion chamber is entirely introduced into the first chamber. When the temperature of the stirring chamber reaches a preset value, the passage to the first chamber is closed and the passage to the second chamber is opened.

9. The processing apparatus according to claim 8, characterized in that, When the second chamber is opened, the high-temperature flue gas diffuses through the inner cavity of the second chamber and is then purified and discharged through the exhaust pipe.

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