A circular carbonization furnace for heat recovery

Abstract

This utility model discloses a circular carbonization furnace for heat recovery, comprising a furnace body, a furnace cover at the right end of the furnace body, a fuel tank fixedly connected to the outer surface of the furnace body, a fuel chamber on the front surface of the fuel tank, a first flue pipe on the left surface of the furnace body, a second flue pipe fixedly connected to the end of the first flue pipe away from the furnace body, and a first shut-off valve on the outer surface of the second flue pipe. By incorporating the first and second flue pipes, the first and second shut-off valves, and a thermometer, the flue gas generated inside the furnace body can be recovered and reused, thereby reducing energy waste. A filter screen can be used to filter the flue gas before discharge, thus preventing environmental pollution. Furthermore, the filter screen can be easily removed by incorporating a square rod, a fixing plate, a guide rod, a first spring, a limiting block, and a snap-fit ​​assembly, thereby improving practicality.

Description

Technical Field

[0001] This utility model relates to the field of carbonization furnace technology, and in particular to a circular carbonization furnace with heat recovery. Background Technology

[0002] A carbonization furnace is a device that thermally decomposes biomass or organic matter (such as wood, crop straw, sludge, etc.) under anaerobic conditions to produce combustible gases, charcoal, and tar.

[0003] However, existing carbonization furnaces still have certain drawbacks. For example, the high-temperature flue gas generated during the wood carbonization process is usually emitted directly, which not only pollutes the atmospheric environment, but also releases the combustible gases in the high-temperature flue gas, resulting in energy waste. Utility Model Content

[0004] The purpose of this invention is to provide a circular carbonization furnace with heat recovery, which can recover and utilize the flue gas generated inside the furnace, thereby reducing energy waste. The flue gas can be filtered before being discharged, thus avoiding environmental pollution.

[0005] To achieve the above objectives, a circular carbonization furnace with heat recovery is provided, comprising:

[0006] The furnace body has a furnace cover at its right end, a fuel tank fixedly connected to its outer surface, a fuel chamber on the front surface of the fuel tank, a first flue pipe on its left surface, a second flue pipe fixedly connected to the end of the first flue pipe away from the furnace body, a first shut-off valve on the outer surface of the second flue pipe, a second shut-off valve on the outer surface of the second flue pipe, and a thermometer on the outer surface of the furnace body.

[0007] A processing box is fixedly connected to the outer surface of the second flue pipe. An exhaust pipe is provided on the upper surface of the processing box. A slot is provided on the left surface of the processing box. A filter screen is slidably connected to the inner surface of the slot. A sealing ring is fitted onto the outer surface of the filter screen. A limit plate is fixedly connected to the left surface of the filter screen. A square rod is slidably connected to the inner surface of the processing box. A fixing plate is fixedly connected to the right end of the square rod. A guide rod is fixedly connected to the right surface of the processing box. A first spring is provided on the outer surface of the guide rod. A limit block is fixedly connected to the right end of the guide rod.

[0008] A snap-fit ​​assembly includes a fixing box, a second spring, a connecting plate, an inclined insert, a slide rod, a wedge block, and a pressure plate. The interior of the fixing box is fixedly connected to the second spring, the lower end of the second spring is fixedly connected to the connecting plate, the lower surface of the connecting plate is fixedly connected to the inclined insert, the inner surface of the fixing box is slidably connected to the slide rod, the rear end of the slide rod is fixedly connected to the wedge block, and the front end of the slide rod is fixedly connected to the pressure plate.

[0009] According to the circular carbonization furnace for heat recovery, the upper surface of the limiting plate is provided with a slot, and the inner surface of the slot is adapted to the inclined insert block.

[0010] According to the aforementioned circular carbonization furnace for heat recovery, one end of the second flue pipe extends into the interior of the fuel chamber, and the other end of the second flue pipe is connected to the processing box.

[0011] According to the aforementioned circular carbonization furnace for heat recovery, the left surface of the sealing ring is in contact with the limiting plate, and the right surface of the sealing ring is in contact with the processing box.

[0012] According to the aforementioned circular carbonization furnace for heat recovery, the outer surface of the guide rod is slidably connected to the fixed plate, the left end of the first spring is fixedly connected to the processing box, and the right end of the first spring is fixedly connected to the fixed plate.

[0013] According to the aforementioned circular carbonization furnace for heat recovery, the left surface of the processing box is fixedly connected to the fixed box, and the outer surface of the connecting plate is slidably connected to the fixed box.

[0014] According to the aforementioned circular carbonization furnace for heat recovery, the outer surface of the inclined insert block is slidably connected to the fixed box, the outer surface of the wedge block is slidably connected to the inclined insert block, and the outer surface of the wedge block is slidably connected to the fixed box.

[0015] According to the aforementioned circular carbonization furnace for heat recovery, the right surface of the filter screen is connected to a square rod, and the sealing ring is made of high-temperature resistant silicone.

[0016] The above-mentioned solution has the following beneficial effects:

[0017] 1. By setting up a first flue pipe, a second flue pipe, a first shut-off valve, a second shut-off valve, and a thermometer, the flue gas generated inside the furnace can be recovered and reused, thereby reducing energy waste.

[0018] 2. By setting up a filter screen, the flue gas can be filtered before being discharged, thereby avoiding environmental pollution. Furthermore, by setting up a structure with square rods, fixing plates, guide rods, first springs, limit blocks, and buckle components, the filter screen can be easily removed, thereby improving practicality.

[0019] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0021] Figure 1 This is a schematic diagram of the overall structure of a circular carbonization furnace for heat recovery according to this utility model.

[0022] Figure 2 This is a cross-sectional view of the overall structure of a circular carbonization furnace for heat recovery according to this utility model.

[0023] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0024] Figure 4 This is a partial structural exploded view of a circular carbonization furnace for heat recovery according to the present invention.

[0025] Figure 5 This is a cross-sectional view of the snap-fit ​​assembly structure of a circular carbonization furnace for heat recovery according to this utility model.

[0026] Legend:

[0027] 1. Furnace body; 2. Furnace cover; 3. Fuel tank; 4. Fuel chamber; 5. First flue pipe; 6. Second flue pipe; 7. First shut-off valve; 8. Second shut-off valve; 9. Thermometer; 10. Processing box; 11. Exhaust pipe; 12. Slot; 13. Filter screen; 14. Sealing ring; 15. Limiting plate; 16. Square rod; 17. Fixing plate; 18. Guide rod; 19. First spring; 20. Limiting block; 21. Buckle assembly; 22. Fixing box; 23. Second spring; 24. Connecting plate; 25. Inclined insert block; 26. Slide rod; 27. Wedge block; 28. Pressure plate; 29. ​​Slot. Detailed Implementation

[0028] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0029] Reference Figure 1-5This utility model discloses a circular carbonization furnace for heat recovery, comprising: a furnace body 1, a furnace cover 2 at the right end of the furnace body 1, a fuel tank 3 fixedly connected to the outer surface of the furnace body 1, a fuel chamber 4 on the front surface of the fuel tank 3, a first flue pipe 5 on the left surface of the furnace body 1, a second flue pipe 6 fixedly connected to the end of the first flue pipe 5 away from the furnace body 1, a first shut-off valve 7 and a second shut-off valve 8 on the outer surface of the second flue pipe 6, a thermometer 9 on the outer surface of the furnace body 1, and one end of the second flue pipe 6 extending into the interior of the fuel chamber 4.

[0030] A treatment box 10 is fixedly connected to the outer surface of the second flue pipe 6. An exhaust pipe 11 is provided on the upper surface of the treatment box 10. A slot 12 is provided on the left surface of the treatment box 10. A filter screen 13 is slidably connected to the inner surface of the slot 12. A sealing ring 14 is fitted onto the outer surface of the filter screen 13. A limiting plate 15 is fixedly connected to the left surface of the filter screen 13. A square rod 16 is slidably connected to the inner surface of the treatment box 10. A fixing plate 17 is fixedly connected to the right end of the square rod 16. A guide rod 18 is fixedly connected to the right surface of the treatment box 10. A first spring 19 is provided on the outer surface of the guide rod 18. A limiting block 20 is fixedly connected to the right end of the guide rod 18. A slot 29 is provided on the upper surface of the limiting plate 15. The other end of the second flue pipe 6 is connected to the treatment box 10 for easy... For the treatment of high-temperature flue gas, the left surface of the sealing ring 14 contacts the limiting plate 15, and the right surface of the sealing ring 14 contacts the treatment box 10 to prevent flue gas leakage. The outer surface of the guide rod 18 is slidably connected to the fixing plate 17. The left end of the first spring 19 is fixedly connected to the treatment box 10, and the right end of the first spring 19 is fixedly connected to the fixing plate 17 to facilitate the removal of the filter screen 13. The outer surface of the guide rod 18 is slidably connected to the fixing plate 17, the left end of the first spring 19 is fixedly connected to the treatment box 10, and the right end of the first spring 19 is fixedly connected to the fixing plate 17 to facilitate the removal of the filter screen 13. The right surface of the filter screen 13 is connected to the square rod 16 to facilitate the removal of the filter screen 13. The sealing ring 14 is made of high-temperature resistant silicone to prevent the sealing ring from being damaged by high temperature.

[0031] The snap-fit ​​assembly 21 includes a fixing box 22, a second spring 23, a connecting plate 24, an inclined insert 25, a sliding rod 26, a wedge block 27, and a pressure plate 28. The interior of the fixing box 22 is fixedly connected to the second spring 23. The lower end of the second spring 23 is fixedly connected to the connecting plate 24. The lower surface of the connecting plate 24 is fixedly connected to the inclined insert 25. The inner surface of the fixing box 22 is slidably connected to the sliding rod 26. The rear end of the sliding rod 26 is fixedly connected to the wedge block 27. The front end of the sliding rod 26 is fixedly connected to the pressure plate 28. The inner surface of the slot 29 is adapted to the inclined insert 25 to facilitate the fixed installation of the filter screen 13. The left surface of the treatment box 10 is fixedly connected to the fixing box 22. The outer surface of the connecting plate 24 is slidably connected to the fixing box 22. The outer surface of the inclined insert 25 is slidably connected to the fixing box 22. The outer surface of the wedge block 27 is slidably connected to the inclined insert 25. The outer surface of the wedge block 27 is slidably connected to the fixing box 22.

[0032] Working principle: During operation, the wood to be carbonized is placed inside the furnace body 1, and then the furnace cover 2 is closed. Fuel is then placed into the fuel chamber 4 inside the fuel tank 3 and ignited. The first shut-off valve 7 is then closed and the second shut-off valve 8 is opened. At this point, the wood inside the furnace body 1 can be carbonized. The flue gas generated during carbonization is sent to the processing box 10 through the first flue pipe 5 and the second flue pipe 6. After being filtered by the filter screen 13, it is discharged through the exhaust pipe 11, thus avoiding environmental pollution. When the filter screen 13 needs to be replaced, simply press the pressure plate 28 on the latch assembly 21, driving the slide rod 26 to slide the wedge block 27 along the inclined surface of the inclined insert block 25. This moves the inclined insert block 25 upwards and compresses the second spring 23, causing the inclined insert block 25 to disengage from the slot 29, thus releasing the restriction on the filter screen 13. During the manufacturing process, under the restoring force of the first spring 19 in a stretched state, the filter screen 13 will be pushed to the left by the square rod 16, making it easier to remove the filter screen 13. Then, the new filter screen 13 is inserted into the slot 12, and the square rod 16 is squeezed, so that it moves to the right along the guide rod 18 under the connection of the fixing plate 17, and the first spring 19 is stretched. At the same time, the value on the temperature gauge 9 is constantly observed during the wood carbonization process. When the internal temperature of the furnace body 1 reaches 300 degrees Celsius, the cellulose and hemicellulose in the wood begin to decompose initially, thereby generating combustible gas. At this time, the second shut-off valve 8 is closed and the first shut-off valve 7 is opened. The combustible gas generated inside the furnace body 1 will be sent into the fuel chamber 4 through the first flue pipe 5 and the second flue pipe 6 to burn together with the fuel, thereby reusing the generated flue gas and reducing energy waste.

[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A heat-recovering retort, comprising: A furnace body (1) is provided with a furnace cover (2) at the right end of the furnace body (1), a fuel tank (3) is fixedly connected to the outer surface of the furnace body (1), and a fuel chamber (4) is provided on the front surface of the fuel tank (3). The furnace body (1) is characterized in that a first flue pipe (5) is provided on the left surface of the furnace body (1), a second flue pipe (6) is fixedly connected to the end of the first flue pipe (5) away from the furnace body (1), a first shut-off valve (7) is provided on the outer surface of the second flue pipe (6), a second shut-off valve (8) is provided on the outer surface of the second flue pipe (6), and a thermometer (9) is provided on the outer surface of the furnace body (1). The outer surface of the second flue pipe (6) is fixedly connected to a processing box (10). An exhaust pipe (11) is provided on the upper surface of the processing box (10). A slot (12) is provided on the left surface of the processing box (10). A filter screen (13) is slidably connected to the inner surface of the slot (12). A sealing ring (14) is sleeved on the outer surface of the filter screen (13). A limiting plate (15) is fixedly connected to the left surface of the filter screen (13). A square rod (16) is slidably connected to the inner surface of the processing box (10). A fixing plate (17) is fixedly connected to the right end of the square rod (16). A guide rod (18) is fixedly connected to the right surface of the processing box (10). A first spring (19) is provided on the outer surface of the guide rod (18). A limiting block (20) is fixedly connected to the right end of the guide rod (18). The snap-fit ​​assembly (21) includes a fixing box (22), a second spring (23), a connecting plate (24), an inclined insert (25), a slide rod (26), a wedge block (27), and a pressure plate (28). The interior of the fixing box (22) is fixedly connected to the second spring (23). The lower end of the second spring (23) is fixedly connected to the connecting plate (24). The lower surface of the connecting plate (24) is fixedly connected to the inclined insert (25). The inner surface of the fixing box (22) is slidably connected to the slide rod (26). The rear end of the slide rod (26) is fixedly connected to the wedge block (27). The front end of the slide rod (26) is fixedly connected to the pressure plate (28).

2. A heat-recovering retort according to claim 1, wherein The upper surface of the limiting plate (15) is provided with a slot (29), and the inner surface of the slot (29) is adapted to the inclined insert (25).

3. A heat-recovering retort according to claim 1, wherein One end of the second flue pipe (6) extends into the interior of the fuel chamber (4), and the other end of the second flue pipe (6) is connected to the processing box (10).

4. A heat-recovering retort according to claim 1, wherein The left surface of the sealing ring (14) is in contact with the limiting plate (15), and the right surface of the sealing ring (14) is in contact with the processing box (10).

5. A heat-recovering retort according to claim 1, wherein The outer surface of the guide rod (18) is slidably connected to the fixing plate (17), the left end of the first spring (19) is fixedly connected to the processing box (10), and the right end of the first spring (19) is fixedly connected to the fixing plate (17).

6. A heat-recovering retort according to claim 1, wherein The left surface of the processing box (10) is fixedly connected to the fixing box (22), and the outer surface of the connecting plate (24) is slidably connected to the fixing box (22).

7. A heat-recovering retort according to claim 1, wherein The outer surface of the inclined insert (25) is slidably connected to the fixed box (22), the outer surface of the wedge block (27) is slidably connected to the inclined insert (25), and the outer surface of the wedge block (27) is slidably connected to the fixed box (22).

8. A heat-recovering retort according to claim 1, wherein The right surface of the filter (13) is connected to the square rod (16), and the sealing ring (14) is made of high-temperature resistant silicone.

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