A biomass fuel re-drying machine

Abstract

The present invention provides a biomass fuel re-drying machine, including a frame, a re-drying barrel, a combustion chamber, a charging bin, and a ventilation mechanism. The present invention integrates the combustion chamber and the re-drying machine into one body, and feeds on one side of the re-drying machine. The heat of combustion directly heats the re-drying machine, and a fan is used to improve the combustion efficiency, and the heat utilization rate is high. The tail gas generated is only carbon dioxide and water, which can be directly discharged without being treated, thereby protecting the environment, improving the quality of tea production, and optimizing the production environment of workers.

Description

Technical Field

[0001] The invention relates to the field of re-dryers, and in particular to a biomass fuel re-dryer. Background Art

[0002] The re-drying machine is an important part of the tea production line. The existing re-drying machine generally uses coal as a heat source. The combustion of coal produces a large amount of harmful gases such as sulfur dioxide and nitrogen dioxide. Direct emission will damage the environment, and the treatment will increase the cost greatly. In addition, these gases may leak during heating, affecting the quality of tea; therefore, many manufacturers are now beginning to use biomass fuels. Biomass fuel is a new type of clean fuel that uses agricultural and forestry waste as raw materials, and is made into various shapes (such as blocks, granules, etc.) through processes such as crushing, mixing, extrusion, and drying. It can be directly burned. It only produces carbon dioxide and water vapor, and is widely used in ecological agriculture. The existing method is generally to concentrate the combustion of biomass fuels to generate heat, and then use air to transfer the heat to the re-drying machine. This method has a huge heat loss and a low energy utilization rate. Summary of the invention

[0003] The invention provides a biomass fuel re-drying machine, which integrates a combustion chamber and a re-drying machine into one body and has high heat utilization rate.

[0004] The present invention is achieved through the following technical solutions:

[0005] A biomass fuel re-drying machine comprises the following components:

[0006] A rack, comprising a rectangular frame fixed to the ground;

[0007] The double-drying barrel comprises an outer barrel fixedly arranged on a frame and an inner barrel sleeved inside the outer barrel, a rotating shaft is arranged at the center of the inner barrel, two ends of the rotating shaft are respectively fixedly arranged on the frame through bearings, a driving mechanism is also connected to one end of the rotating shaft located on the frame, a plurality of frames are arranged on the rotating shaft inside the inner barrel and connected to the inner wall of the inner barrel, and the driving mechanism drives the inner barrel to rotate inside the outer barrel through the rotating shaft;

[0008] The combustion chamber is arranged below the composite drying barrel and connected to the outer barrel as a whole. A hot air duct is arranged in the outer barrel near the inner barrel. The combustion chamber and the hot air duct are connected. A chimney is arranged at the rear of the outer barrel and is connected to the hot air duct.

[0009] The charging bin is fixed on the side of the frame, the bottom of which is connected to the discharge channel, and the other end of the discharge channel is connected to the combustion chamber;

[0010] The ventilation mechanism comprises an air duct fixed to one side of the combustion chamber and connected to the interior of the combustion chamber, and a fan is arranged on the air duct.

[0011] Preferably, the frame is welded from rectangular steel pipes, and reinforcing ribs are welded at the top corners; a fixing ring is fixedly connected to the outside of the outer barrel of the complex dry barrel, and the fixing ring is fixedly connected to the upper surface of the frame.

[0012] Preferably, the driving mechanism includes a sprocket connected to the end of the rotating shaft, the sprocket is connected to the output end of the first reducer fixed on the frame through a chain, the reducer is input by the first motor, the first motor is fixed to the ground and is connected to the input end of the first reducer through a belt.

[0013] Preferably, the discharge channel is an auger conveyor, the input end of the auger and the second motor input power through the second reducer; the other end of the auger is connected to the inside of the combustion chamber; a valve is provided at the connection between the discharge channel and the bottom of the charging bin.

[0014] Preferably, a high temperature resistant filter is provided between the combustion chamber and the hot air duct.

[0015] Preferably, bearings are provided at both ends of the inner wall of the outer barrel, and the inner barrel is arranged on the bearings.

[0016] Preferably, the chimney is vertically arranged on the top of one end of the outer barrel close to the driving mechanism.

[0017] Preferably, a drawer-type movable bin is provided at the bottom of the combustion chamber, and a cleaning plate inclined outward is provided at the bottom of the drawer-type movable bin.

[0018] Preferably, a control box is provided on one side of the re-drying barrel, and the control box is provided with a control panel.

[0019] The present invention integrates the combustion chamber and the re-dryer into one, and feeds are added on one side of the re-dryer. The heat of combustion directly heats the re-dryer, and a fan is used to improve the combustion efficiency. The heat utilization rate is high, and the tail gas generated contains only carbon dioxide and water, which can generally be directly discharged without being treated, thereby protecting the environment, improving the quality of tea production, and optimizing the production environment of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a biomass fuel re-drying machine in an embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of a biomass fuel re-drying machine in an embodiment of the present invention.

[0022] The reference numerals are as follows:

[0023] 1. Frame; 2. Outer barrel; 3. Inner barrel; 4. Rotating shaft; 5. Frame; 6. Combustion chamber; 7. Hot air duct; 8. Chimney; 9. Filter; 10. Feeding bin; 11. Discharge channel; 12. Air duct; 13. Fan; 14. Reinforcement plate; 15. Cleaning plate; 16. Control box. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined; in addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figure 1 A biomass fuel re-drying machine shown includes the following components:

[0029] The frame 1 comprises a rectangular frame fixed to the ground;

[0030] The re-drying barrel comprises an outer barrel 2 fixedly arranged on a frame 1 and an inner barrel 3 sleeved inside the outer barrel 2, a rotating shaft 4 is arranged at the center of the inner barrel 3, both ends of the rotating shaft 4 are respectively fixedly arranged on the frame 1 through bearings, and a driving mechanism is also connected to one end of the rotating shaft 4 located on the frame 1, and a plurality of skeletons 5 are arranged on the rotating shaft 4 inside the inner barrel 3 and connected to the inner wall of the inner barrel 3, and the driving mechanism drives the inner barrel 3 to rotate inside the outer barrel 2 through the rotating shaft 4;

[0031] The combustion chamber 6 is arranged below the composite barrel and connected to the outer barrel 2 as a whole. A hot air duct 7 is arranged in the outer barrel 2 near the inner barrel 3. The combustion chamber 6 is connected to the hot air duct 7. A chimney 8 is arranged at the rear of the outer barrel 2 and is connected to the hot air duct 7.

[0032] The feeding bin 10 is fixed to the side of the frame 1 and is generally arranged in a cone shape. A discharge port is arranged at the bottom and communicates with a discharge channel 11. The other end of the discharge channel 11 communicates with the combustion chamber 6.

[0033] The ventilation mechanism includes an air duct 12 fixed to one side of the combustion chamber 6 and connected to the interior of the combustion chamber 6. A fan 13 is provided on the air duct 12 to introduce oxygen required for combustion and provide partial power for hot air circulation.

[0034] In this embodiment, the frame 1 is welded with rectangular steel pipes, and a reinforcing rib plate 14 is welded at the top corners; a fixing ring is fixedly connected to the outer barrel 2 of the composite dry barrel, and the fixing ring is fixedly connected to the upper surface of the frame 1. The connection method is generally welding, and bolt connection can also be used.

[0035] In this embodiment, the driving mechanism includes a sprocket connected to the end of the rotating shaft 4, the sprocket is connected to the output end of the first reducer fixed on the frame 1 through a chain, the reducer is input by the first motor, the first motor is fixed to the ground and is connected to the input end of the first reducer through a belt.

[0036] In this embodiment, Figure 2 As shown, the discharge channel 11 is an auger-type conveyor, the input end of the auger and the second motor input power through the second reducer; the other end of the auger is connected to the inside of the combustion chamber 6; a valve is provided at the connection between the discharge channel 11 and the bottom of the charging bin 10. The auger-type conveying can maintain the stable addition of fuel and make the combustion more complete.

[0037] In this embodiment, a high temperature resistant filter screen 9 is provided between the combustion chamber 6 and the hot air duct 7. Generally, asbestos is used to prevent large particles of smoke and dust from entering the hot air duct 7.

[0038] In this embodiment, bearings are arranged at both ends of the inner wall of the outer barrel 2, and the inner barrel 3 is arranged on the bearings. Generally, a sealing groove is also required between the bearing and the hot air duct 7 to prevent hot air leakage.

[0039] In this embodiment, the chimney 8 is vertically arranged at the top of one end of the outer barrel 2 close to the driving mechanism. Usually, the combustion chamber 6 is generally arranged near the front end of the outer barrel 2, and the chimney 8 is generally arranged at the end away from the combustion chamber 6, which can increase the time of hot air in the hot air duct 7 and improve the heat utilization efficiency.

[0040] In this embodiment, a drawer-type movable bin is provided at the bottom of the combustion chamber 6, and a cleaning plate 15 inclined outward is provided at the bottom of the drawer-type movable bin. After each use, the movable bin can be drawn out to clean the combustion chamber 6, and the unburned fuel can be processed and added to the discharge port for recycling.

[0041] When this embodiment is in use, a control box 16 is provided on one side of the re-drying barrel, and the control box 16 is provided with a control panel. The motor, reducer, fan 13 and various valves can be integrated together and controlled by a predetermined program of the controller in the control box 16. The specific control process is pre-feeding->ignition->buffer heating->normal combustion->cooling fan delay->stop. The control box 16 can be set on the frame, and the control panel is provided with the fan ignition switch (for controlling the igniter), wind speed gear (for controlling the fan air supply), and feed speed gear (controlling the speed of the second motor to control the auger speed for controlling the feed speed) to improve production efficiency.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A biomass fuel re-drying machine, characterized in that: Includes the following components: A rack, comprising a rectangular frame fixed to the ground; The double-drying barrel comprises an outer barrel fixedly arranged on a frame and an inner barrel sleeved inside the outer barrel, a rotating shaft is arranged at the center of the inner barrel, two ends of the rotating shaft are respectively fixedly arranged on the frame through bearings, a driving mechanism is also connected to one end of the rotating shaft located on the frame, a plurality of frames are arranged on the rotating shaft inside the inner barrel and connected to the inner wall of the inner barrel, and the driving mechanism drives the inner barrel to rotate inside the outer barrel through the rotating shaft; The combustion chamber is arranged below the composite drying barrel and connected to the outer barrel as a whole. A hot air duct is arranged in the outer barrel near the inner barrel. The combustion chamber and the hot air duct are connected. A chimney is arranged at the rear of the outer barrel and is connected to the hot air duct. The charging bin is fixed on the side of the frame, the bottom of which is connected to the discharge channel, and the other end of the discharge channel is connected to the combustion chamber; The ventilation mechanism comprises an air duct fixed to one side of the combustion chamber and connected to the interior of the combustion chamber, and a fan is arranged on the air duct; The frame is welded with rectangular steel pipes, and a reinforcing rib plate is welded at the top corners; a fixing ring is fixedly connected to the outside of the outer barrel of the composite dry barrel, and the fixing ring is fixedly connected to the upper surface of the frame; The driving mechanism includes a sprocket connected to the end of the rotating shaft, the sprocket is connected to the output end of the first reducer fixed on the frame through a chain, the reducer is input by the first motor, the first motor is fixed to the ground and is connected to the input end of the first reducer through a belt; The discharge channel is an auger-type conveyor, the input end of the auger and the second motor input power through the second reducer; the other end of the auger is connected to the inside of the combustion chamber; a valve is provided at the connection between the discharge channel and the bottom of the charging bin; A high temperature resistant filter screen is provided between the combustion chamber and the hot air duct; Bearings are arranged at both ends of the inner wall of the outer barrel, and the inner barrel is arranged on the bearings.

2. A biomass fuel re-drying machine according to claim 1, characterized in that: The chimney is vertically arranged on the top of one end of the outer barrel close to the driving mechanism.

3. The biomass fuel re-drying machine according to claim 1, characterized in that: A drawer-type movable bin is arranged at the bottom of the combustion chamber, and a cleaning plate inclined outward is arranged at the bottom of the drawer-type movable bin.

4. The biomass fuel re-drying machine according to claim 1, characterized in that: A control box is arranged on one side of the re-drying barrel, and the control box is provided with a control panel.

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