Fuel conveying device of biomass heat supply furnace

Abstract

The utility model relates to a biomass heat supply furnace fuel conveying device which comprises a material storage box, a material hole is formed in the lower portion of the material storage box, the rear side wall of the material hole is communicated with one end of a fuel conveying pipeline, and a discharging tee joint is arranged at the position, located at a curing barn, of the fuel conveying pipeline. The other end of the fuel conveying pipeline is communicated with the front side wall of the material hole through a driving box, a plug disc chain provided with plug discs at intervals is arranged in the fuel conveying pipeline, and a driving mechanism for driving the plug disc chain to circularly move in the driving box, the material hole and the fuel conveying pipeline is arranged in the driving box. The device is favorable for realizing automatic feeding and reducing the labor intensity of workers.

Description

Technical Field

[0001] This utility model relates to a fuel conveying device for a biomass heating furnace. Background Technology

[0002] During tobacco leaf preparation, the tobacco leaves need to be placed in a curing barn for drying. Currently, during the tobacco leaf curing period, farmers and curing masters need to be on duty 24 hours a day, and biomass pellet fuel is added to the curing barn at irregular intervals. This method is highly dependent on manual labor. Manual feeding is not only time-consuming and labor-intensive, but also difficult to manage, and prone to production accidents and management risks. Utility Model Content

[0003] The purpose of this invention is to provide a fuel conveying device for a biomass heating furnace, which helps to achieve automatic feeding and reduce the labor intensity of workers.

[0004] The technical solution of this utility model is as follows: a fuel conveying device for a biomass heating furnace, including a storage box, a material cavity provided at the bottom of the storage box, the rear side wall of the material cavity being connected to one end of a fuel conveying pipe, a discharge tee being provided at each curing chamber on the fuel conveying pipe, the other end of the fuel conveying pipe being connected to the front side wall of the material cavity via a drive box, a stopper chain with stoppers installed at intervals being provided inside the fuel conveying pipe, and a drive mechanism being provided inside the drive box to drive the stopper chain to circulate within the drive box, the material cavity, and the fuel conveying pipe.

[0005] Furthermore, the feeding tee is an electrically controlled feeding tee, which is connected to the burner hopper of the drying room via a pipe, and a material level sensor is installed on the burner hopper.

[0006] Furthermore, a return port is provided on the section of the fuel delivery pipeline near the drive box, and a return pipe extending into the storage tank is connected to the return port.

[0007] Furthermore, the drive mechanism includes a drive sprocket located on the right side of the drive box, and a driven wheel rotatably connected to the left side of the drive sprocket in the drive box via a tensioning device. The other end of the fuel delivery pipe has a horizontal tube section that enters the drive box from the left side. The disc chain passes through the horizontal tube section, passes around the drive sprocket and the driven wheel, and exits through the right side wall of the drive box.

[0008] Furthermore, the tensioning device includes a pair of transverse guide rods, on which a mounting base is slidably connected. The driven wheel is rotatably connected to the mounting base via a longitudinal rotating shaft. A return spring is transversely installed between the left end of the mounting base and the left side wall of the drive box.

[0009] Furthermore, a fixing plate is provided inside the drive box between the drive sprocket and the driven wheel, and a collection groove is formed between the fixing plate and the right side wall of the drive box.

[0010] Furthermore, a circular hole is provided at the lower part of the fixed plate for the plug chain to pass through, and the horizontal tube is inserted into the collection groove through the fixed plate.

[0011] Furthermore, the upper part of the drive sprocket is installed in the drive box at a forward tilt and is driven to rotate by the drive mechanism. The drive sprocket is provided with an annular relief recess that is recessed inward to the root circle of the tooth.

[0012] Furthermore, the driven wheel is provided with an annular recess, and stops are provided at intervals along the circumferential direction inside the annular recess.

[0013] Furthermore, stopper discs and corner discs are provided between the right end of the drive box and the front side of the hopper, as well as at each corner of the fuel delivery pipeline.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] This biomass heating furnace fuel conveying device not only enables automatic feeding, reducing the labor intensity of workers, but also helps to reduce reliance on manual labor and lower labor costs; it also facilitates management and helps to reduce production accidents and management risks. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the drive mechanism structure of this utility model;

[0018] Figure 3 For the present utility model Figure 2 AA section view;

[0019] Figure 4 For the present utility model Figure 2 BB cross-sectional view;

[0020] Figure 5 For the present utility model Figure 1 CC section view;

[0021] Figure 6 This is a schematic diagram of the corner structure of this utility model;

[0022] Figure 7 This is a schematic diagram showing the fit between the fuel delivery pipe and the feeding tee of this utility model;

[0023] Figure 8 For the present utility model Figure 1 A simplified schematic diagram of direction D;

[0024] In the diagram: 10-Storage bin; 11-Material pit; 12-Discharge port; 20-Fuel delivery pipe; 21-Return port; 22-Return pipe; 23-Horizontal pipe section; 30-Discharge tee; 31-Pipe; 32-Corrugated pipe; 40-Drive box; 41-Fixing plate; 42-Collection trough; 43-Round hole; 50-Plug chain; 51-Plug; 60-Drive sprocket; 61-Motor; 62-Annular clearance recess; 70-Tensioning device; 71-Horizontal guide rod; 72-Mounting seat; 73-Reset spring; 80-Driven wheel; 81-Longitudinal shaft; 82-Annular recess; 83-Stop block; 90-Plug angle plate; 91-Rotator. Detailed Implementation

[0025] To make the above-mentioned features and advantages of this utility model more easily understood, specific embodiments are described below in conjunction with the accompanying drawings, but this utility model is not limited thereto.

[0026] refer to Figures 1 to 8

[0027] A biomass heating furnace fuel conveying device includes a storage tank 10, a material cavity 11 at the bottom of the storage tank, an outlet 12 on the rear side wall of the material cavity connected to one end of a fuel conveying pipe 20, a discharge tee 30 provided in the section of the fuel conveying pipe erected on the upper front side of the curing barn, and the other end of the fuel conveying pipe connected to the front side wall of the material cavity via a drive box 40. A stopper chain 50 with stopper discs 51 installed at intervals is provided in the fuel conveying pipe. A drive mechanism is provided in the drive box to drive the stopper chain to circulate in the drive box, the material cavity, and the fuel conveying pipe. The drive mechanism causes the stopper chain to pass through the material cavity from front to back, thereby bringing the pellet fuel in the material cavity into the fuel conveying pipe by the stopper chain and sending it into each curing barn through the discharge tee.

[0028] In this embodiment, if there are multiple drying rooms, a feeding tee is installed at each drying room on the fuel delivery pipeline. To facilitate control of the feeding tee's opening and closing, the feeding tee is an electrically controlled feeding tee, a commercially available product. Its specific structure is as described in patent CN216426058U or patent CN209283976U, which discloses a feeding tee device for livestock farms. The electrically controlled feeding tee is connected to the burner hopper of the drying room via pipeline 31. A level sensor is installed on the burner hopper. The level sensor is electrically connected to the electrically controlled feeding tee via a controller. When the level sensor detects insufficient particulate fuel in the burner hopper, it transmits a signal to the controller, causing the motor or linear motion mechanism of the electrically controlled feeding tee to actuate, opening the gate and allowing particulate fuel to fall into the burner hopper through the pipeline. When the particulate fuel in the burner hopper is sufficient, the electrically controlled feeding tee closes.

[0029] In this embodiment, the upper part of the pipe can be detachably connected to the lower outlet of the electrically controlled feeding tee via a corrugated pipe 32, which facilitates the disassembly of the pipe as needed.

[0030] In this embodiment, in order to recover the residual particulate fuel in the fuel delivery pipeline and reduce the amount of particulate fuel entering the drive box, a return port 21 is provided at the bottom of the section of the fuel delivery pipeline near the drive box (the end of the fuel delivery pipeline). A return pipe 22 extending into the storage box is obliquely connected to the return port so that the residual particulate fuel in the fuel delivery pipeline can return to the storage box.

[0031] In this embodiment, in order to drive the disc chain to rotate cyclically, the driving mechanism includes a drive sprocket 60 located on the right side of the drive box. A driven wheel 80 is rotatably connected to the left side of the drive sprocket in the drive box via a tensioning device 70. The other end of the fuel delivery pipe has a horizontal tube 23 that passes through the drive box from the left side. After the disc chain passes through the horizontal tube, it goes around the drive sprocket counterclockwise from bottom to top, then goes around the driven wheel counterclockwise from the upper part to the lower part, and finally passes through the right side wall of the drive box and then enters the hopper.

[0032] In this embodiment, in order to achieve elastic tension of the driven wheel, the tensioning device includes a pair of transverse guide rods 71, on which a mounting base 72 is slidably connected. The driven wheel is rotatably connected to the mounting base via a longitudinal rotating shaft 81. At least two return springs 73 are transversely installed between the left end of the mounting base and the left side wall of the drive box.

[0033] In this embodiment, in order to collect particulate fuel brought into the drive box by the plug chain in the fuel delivery pipeline, a fixed plate 41 is provided in the drive box between the drive sprocket and the driven wheel. A collection groove 42 is formed between the fixed plate and the right side wall of the drive box. Part of the particulate fuel collected in the collection groove will be brought into the material cavity by the plug chain.

[0034] In this embodiment, circular holes 43 for the disc chain to pass through are provided on the lower part of the fixed plate and the right side wall of the drive box. The horizontal tube is inserted into the collection groove through the fixed plate, and the right end of the horizontal guide rod is connected to the fixed plate.

[0035] In this embodiment, to better drive the disc chain and ensure the disc material chain smoothly winds around the drive sprocket, the rear side of the drive box is sloped, causing the upper part of the drive sprocket to tilt forward and rotate within the drive box. The drive sprocket is driven to rotate by a drive mechanism. For example, a motor 61 is connected to the drive sprocket's shaft via a reducer to achieve the rotation of the drive sprocket. The drive sprocket is provided with an annular clearance recess 62 that is recessed inward to the tooth root circle, so as to avoid the disc chain.

[0036] In this embodiment, in order to better assist the movement of the disc chain, an annular recess 82 is provided on the driven wheel, and a stop block 83 is provided at intervals along the circumferential direction inside the annular recess.

[0037] In this embodiment, to ensure smooth operation of the disc chain at each rotation, disc corner plates (disc cornerers) 90 are provided between the right end of the drive box and the front side of the hopper, as well as at each corner of the fuel delivery pipeline. A rotating wheel 91, which assists in the movement of the disc chain, is rotatably connected inside the disc corner plate. The disc corner plate is a commercially available product, and either a 90° or 180° disc corner plate can be selected depending on the angle of rotation.

[0038] When the drive mechanism starts, the motor drives the disc chain to rotate via a reducer, drive sprocket, and driven sprocket. The discs on the disc chain then circulate within the fuel delivery pipe. Pellet fuel enters the fuel delivery pipe from the outlet and is contained in the space between adjacent discs on the disc chain. As the disc chain continues to move, the pellet fuel moves from the hopper along the fuel delivery pipe towards the outlet tee, as if pushed by a piston. During this process, due to the proper fit between the discs and the inner wall of the pipe, the pellet fuel is delivered stably without leakage or backflow. Furthermore, by controlling the motor speed of the drive mechanism, the delivery speed and quantity of the pellet fuel can be precisely adjusted. Any unfed pellet fuel is returned to the storage tank via the return pipe.

[0039] In addition, the level sensor can be electrically connected to the motor of the drive mechanism through the controller so as to control the operation of the drive mechanism according to the amount of material in the burner hopper.

[0040] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws) or a non-detachable fixed connection (e.g., riveting or welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0041] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0042] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0043] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A fuel conveying device for a biomass heating furnace, comprising a storage tank, characterized in that, The lower part of the storage box is provided with a material cavity. The rear side wall of the material cavity is connected to one end of the fuel conveying pipe. A material discharge tee is provided on the fuel conveying pipe at the baking room. The other end of the fuel conveying pipe is connected to the front side wall of the material cavity via a drive box. A stopper chain with stoppers installed at intervals is provided in the fuel conveying pipe. A drive mechanism is provided in the drive box to drive the stopper chain to circulate in the drive box, the material cavity, and the fuel conveying pipe.

2. The fuel conveying device for a biomass heating furnace according to claim 1, characterized in that, The feeding tee is an electrically controlled feeding tee, which is connected to the burner hopper of the curing barn via a pipe. A material level sensor is installed on the burner hopper.

3. A fuel conveying device for a biomass heating furnace according to claim 1 or 2, characterized in that, A return port is provided on the section of the fuel delivery pipeline near the drive box, and a return pipe extending into the storage tank is connected to the return port.

4. The fuel conveying device for a biomass heating furnace according to claim 1, characterized in that, The drive mechanism includes a drive sprocket located on the right side of the drive box. A driven wheel is rotatably connected to the left side of the drive sprocket in the drive box via a tensioning device. The other end of the fuel delivery pipe has a horizontal tube that enters the drive box from the left side. The disc chain passes through the horizontal tube, goes around the drive sprocket and the driven wheel, and exits through the right side wall of the drive box.

5. A fuel conveying device for a biomass heating furnace according to claim 4, characterized in that, The tensioning device includes a pair of transverse guide rods, on which mounting seats are slidably connected. The driven wheel is rotatably connected to the mounting seats via a longitudinal rotating shaft. A return spring is transversely installed between the left end of the mounting seat and the left side wall of the drive box.

6. A fuel conveying device for a biomass heating furnace according to claim 4 or 5, characterized in that, A fixing plate is provided inside the drive box between the drive sprocket and the driven wheel, and a collection groove is formed between the fixing plate and the right side wall of the drive box.

7. A fuel conveying device for a biomass heating furnace according to claim 6, characterized in that, A circular hole is provided at the lower part of the fixed plate for the plug chain to pass through, and the horizontal tube is inserted into the collection groove through the fixed plate.

8. A fuel conveying device for a biomass heating furnace according to claim 4, characterized in that, The upper part of the drive sprocket is installed in the drive box at an angle to the front and is driven to rotate by the drive mechanism. The drive sprocket is provided with an annular relief recess that is recessed inward to the root circle of the tooth.

9. A fuel conveying device for a biomass heating furnace according to claim 4, 5, 7 or 8, characterized in that, The driven wheel is provided with an annular recess, and stops are provided at intervals along the circumferential direction inside the annular recess.

10. A fuel conveying device for a biomass heating furnace according to claim 1, characterized in that, A stopper disc is installed between the right end of the drive box and the front side of the hopper, as well as at each corner of the fuel delivery pipeline.

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