A special exhaust device for a bio-burning furnace

Abstract

The utility model discloses a kind of exhaust devices special for biological combustion furnace, it is related to the technical field of biomass combustion furnace, including exhaust pipe, the top of the exhaust pipe is fixedly installed with filter mechanism, the bottom of the exhaust pipe is fixedly installed with collection mechanism;The filter mechanism includes mounting ring.The utility model adopts the above structure, the device can effectively reduce filter screen dismounting frequency using collection mechanism, after a period of time is filtered by filter screen, rotate adjusting handle, make sleeve rotate, drive regular hexagon clamping block and connecting rod, carousel rotate, let on brush plate brush scratch clean filter screen outer surface, dust falls into collecting hopper, simultaneously, connecting rod drives lower brush plate brush scratch collecting hopper, prevent dust accumulation, after cleaning, push adjusting handrail to open collecting hopper bottom, because of lower brush plate agitation, dust is automatically discharged, solve the problem that traditional device manual frequent dismounting filter screen leads to operation cumbersome, low efficiency, improve the convenience of use.

Description

Technical Field

[0001] This utility model belongs to the field of biomass combustion furnace technology, and specifically relates to a special exhaust device for biomass combustion furnaces. Background Technology

[0002] Against the backdrop of global advocacy for sustainable development and clean energy utilization, biomass combustion furnaces, as devices that use biomass such as crop straw, wood chips, and rice husks as fuel, convert biomass into thermal energy for heating, power generation, and other purposes through efficient combustion technology. Due to their environmental protection and renewable advantages, they are being used more and more widely in the energy field.

[0003] In the operation of a biogas incinerator, the exhaust system is an indispensable component. The exhaust system for a waste incinerator disclosed in Chinese Patent No. CN217329807U consists of an exhaust pipe connected to the incinerator, a slag discharge pipe, and related filter components. When exhausting waste gas, the device can filter impurities in the exhaust gas with the help of a filter plate. The impurities are deposited on a rotatable baffle plate, which is easy to clean. Furthermore, the filter plate can be replaced by disassembling the second annular plate, which to a certain extent avoids clogging and air pollution problems.

[0004] However, in actual use, the device has revealed many drawbacks. The high-temperature flue gas discharged from the bio-combustion furnace contains a large amount of dust, which makes the filter plates very easy to clog. Once clogged, the filter screen needs to be frequently disassembled and reassembled. However, the disassembly and reassembly of the filter screen must be completed when the equipment is stopped, which inevitably leads to equipment interruption and affects the stability and continuity of energy supply. In addition, the entire filter screen disassembly and reassembly process relies entirely on manual operation, which is not only labor-intensive but also prone to human error due to frequent operation. The overall operation process is cumbersome and complicated, which greatly reduces the operating efficiency and practicality of the equipment. It is evident that the existing equipment has certain defects and shortcomings and needs to be improved and redesigned. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a special exhaust device for biomass combustion furnaces, so as to solve the problem that the existing technology requires frequent disassembly and assembly of filter screens, making the overall operation cumbersome and inconvenient.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A special exhaust device for a biogas combustion furnace includes an exhaust pipe, a filter mechanism fixedly installed at the top of the exhaust pipe, and a collection mechanism fixedly installed at the bottom of the exhaust pipe.

[0008] The filtration mechanism includes a mounting ring, on the outer side of which a fixing plate is fixedly connected in a ring at equal intervals. The lower end of the fixing plate is threaded with a mounting screw. A filter screen is fixedly installed on the inner side of the mounting ring. The filter screen is generally conical in shape. A cleaning group is provided at the bottom of the filter screen, and the bottom of the cleaning group is engaged with the collection mechanism.

[0009] As a preferred technical solution, an external connecting pipe is fixedly installed on the top of the mounting ring. The external connecting pipe is located on the outside of the filter screen, and the overall shape of the exhaust pipe is L-shaped.

[0010] As a preferred technical solution, the top of the external connecting pipe and the inlet end of the exhaust pipe are both fixedly installed with mounting flanges, and mounting holes are arranged in a ring at equal intervals on the outer side of the mounting flanges, and the mounting holes are countersunk holes.

[0011] As a preferred technical solution, the cleaning assembly includes a turntable, which is rotatably connected to the bottom of the filter screen. An upper brush plate is fixedly connected to the outer side of the filter screen at equal intervals. The inner side of the upper brush plate is fitted and connected to the inner side of the filter screen. A connecting rod is fixedly installed at the bottom of the turntable, and a locking block is fixedly installed at the bottom of the connecting rod. The bottom of the locking block is inserted into the inner side of the collection mechanism.

[0012] As a preferred technical solution, the collection mechanism includes a collection hopper and a lower brush plate. The collection hopper is fixedly connected to the bottom of the exhaust pipe. A sealing cap is threadedly connected to the bottom of the collection hopper. A rotating shaft is rotatably connected to the middle of the sealing cap. A sleeve is fixedly installed on the top of the rotating shaft. The bottom of the clamping block is inserted into the inside of the sleeve. The lower brush plates are arranged in a ring at equal intervals and fixedly connected to the lower end of the outer surface of the connecting rod. The outer side of the lower brush plates is in close contact with the inner wall of the collection hopper.

[0013] As a preferred technical solution, an adjustment handle is fixedly connected to the bottom of the rotating shaft, and an adjustment armrest is fixedly connected at equal intervals to the outer side of the sealing cover.

[0014] As a preferred technical solution, both the upper and lower brush plates are ceramic fiber brush plates, and the cross-sectional shape of the inner wall of the sleeve and the cross-sectional shape of the clamping block are both set to regular hexagons.

[0015] In summary, the present invention has the following main advantages:

[0016] First, this device, by setting up a filtration mechanism, allows the mounting ring to be placed on top of the exhaust pipe during use, and connected to the exhaust end of the combustion furnace via the mounting flange. When the flue gas is discharged, the conical filter screen efficiently filters dust, and the increased filtration area improves the filtration effect. If the filter screen needs to be disassembled and repaired, the mounting screw on the fixing plate is twisted to separate it from the exhaust pipe, and the mounting ring is removed, which allows for convenient operation of the entire filter screen.

[0017] Secondly, this device employs a collection mechanism, enabling convenient cleaning without the need for frequent disassembly and reassembly of the filter screen. During use, after the filter screen has been filtering for a period of time, rotating the adjustment handle rotates the sleeve. Utilizing the cooperation between the hexagonal locking block and the sleeve, the connecting rod, turntable, and upper brush plate rotate. The upper brush plate cleans the outer surface of the filter screen, and dust falls into the collection hopper. Simultaneously, the lower brush plate cleans the collection hopper to prevent dust accumulation. After cleaning, operating the adjustment handle opens the collection hopper, and the dust is automatically discharged, enhancing ease of use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a bottom view structural diagram of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall disassembled structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cleaning assembly structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the collection hopper of this utility model.

[0023] Reference numerals: 1. Exhaust pipe; 2. Filtering mechanism; 21. Mounting ring; 22. Fixing plate; 23. Mounting screw; 24. Filter screen; 25. External connecting pipe; 26. Cleaning assembly; 261. Turntable; 262. Upper brush plate; 263. Connecting rod; 264. Locking block; 3. Collection mechanism; 31. Collection hopper; 32. Lower brush plate; 33. Sealing cover; 34. Rotating shaft; 35. Sleeve; 36. Adjusting handle; 37. Adjusting armrest; 4. Mounting flange; 5. Mounting hole. Detailed Implementation Example

[0024] refer to Figures 1 to 5 This embodiment of a special exhaust device for a biomass combustion furnace includes an exhaust pipe 1, a filter mechanism 2 fixedly installed at the top of the exhaust pipe 1, and a collection mechanism 3 fixedly installed at the bottom of the exhaust pipe 1.

[0025] The filter mechanism 2 includes a mounting ring 21. A fixing plate 22 is fixedly connected to the outer side of the mounting ring 21 in a ring-shaped arrangement at equal intervals. A mounting screw 23 is threaded to the lower end of the fixing plate 22. A filter screen 24 is fixedly installed on the inner side of the mounting ring 21. The filter screen 24 is conical in shape. A cleaning assembly 26 is located at the bottom of the filter screen 24. The bottom of the cleaning assembly 26 is engaged with the collection mechanism 3. During use, when the exhaust device for this biogas combustion furnace is working, the flue gas generated by the combustion furnace is discharged through the exhaust pipe 1. The mounting ring 21 in the filter mechanism 2 is securely connected to the top of the exhaust pipe 1 by the mounting screw 23 on the fixing plate 22. The filter screen 24, with its conical shape and large surface area, is designed to efficiently filter dust from the flue gas, achieving initial purification. When cleaning the filter or performing related maintenance, loosening the mounting screw 23 allows for easy removal of the mounting ring 21 and filter screen 24 from the top of the exhaust pipe 1. The cleaning assembly 26, located at the bottom of the filter screen 24, can periodically clean the filter screen 24 during equipment operation, sweeping away dust. The bottom of the cleaning assembly 26 engages with the collection mechanism 3, allowing the swept-away dust to fall into the collection mechanism 3, completing the dust collection process and ensuring the continuous and efficient operation of the exhaust device.

[0026] refer to Figures 1-4 An external connecting pipe 25 is fixedly installed on the top of the mounting ring 21. The external connecting pipe 25 is located on the outside of the filter screen 24. The exhaust pipe 1 is L-shaped. Mounting flanges 4 are fixedly installed on the top of the external connecting pipe 25 and the inlet end of the exhaust pipe 1. Mounting holes 5 are evenly spaced and arranged in a ring on the outside of the mounting flanges 4. The mounting holes 5 are countersunk holes. In this special exhaust device for biomass combustion furnaces, the external connecting pipe 25 at the top of the mounting ring 21 is located outside the filter screen 24 and works in conjunction with the exhaust pipe 1. The exhaust pipe 1 is L-shaped. The exhaust pipe 1 and the external connecting pipe 25 are both equipped with mounting flanges 4 at their input ends and tops. The outer side of the mounting flanges 4 has countersunk holes arranged in a ring at equal intervals. These countersunk holes are used to install connecting bolts and other connecting parts. In actual installation, by passing the bolts through the countersunk holes, the exhaust pipe 1 and the external connecting pipe 25 can be firmly connected to the exhaust outlet of the combustion furnace and related components such as subsequent exhaust treatment equipment. The countersunk hole design allows the bolt heads to sink into the holes, ensuring a flat connection surface. This not only enhances the stability of the connection and prevents problems such as air leakage due to loosening during the exhaust process, but also does not affect the overall appearance and normal operation of the device, ensuring the sealing and efficient operation of the entire exhaust system.

[0027] refer to Figure 3 and Figure 5The cleaning assembly 26 includes a turntable 261, which is rotatably connected to the bottom of the filter screen 24. Upper brush plates 262 are fixedly connected at equal intervals to the outer side of the filter screen 24, and the inner side of the upper brush plates 262 is in close contact with the inner side of the filter screen 24. A connecting rod 263 is fixedly installed at the bottom of the turntable 261, and a locking block 264 is fixedly installed at the bottom of the connecting rod 263. The bottom of the locking block 264 is inserted into the inner side of the collection mechanism 3. When the cleaning assembly 26 is in operation, if the filter screen 24 needs cleaning, external force drives the turntable 261 to rotate at the bottom of the filter screen 24. The rotation of the turntable 261 causes the connecting rod 263 fixed at its bottom to rotate synchronously, and the connecting rod 263 in turn drives the bottom... The rotating block 264, in conjunction with the collecting mechanism 3, serves to position and transmit torque. Simultaneously, the rotation of the turntable 261 causes the upper brush plate 262, fixed on its circumference, to move in a circular motion around the outside of the filter screen 24. Since the inner side of the upper brush plate 262 is in close contact with the filter screen 24, the upper brush plate 262 continuously scrapes the inner side of the filter screen 24 during rotation, cleaning off the dust and other impurities attached to it. The cleaned dust falls downwards along the filter screen 24 under the action of gravity, and falls into the collecting mechanism 3 below through the connection between the block 264 and the collecting mechanism 3, thereby realizing the automatic cleaning of the filter screen 24 and ensuring its continuous and efficient filtration performance.

[0028] refer to Figures 1-3 and Figure 5The collection mechanism 3 includes a collection hopper 31 and a lower brush plate 32. The collection hopper 31 is fixedly connected to the bottom of the exhaust pipe 1. A sealing cover 33 is threadedly connected to the bottom of the collection hopper 31. A rotating shaft 34 is rotatably connected to the middle of the sealing cover 33. A sleeve 35 is fixedly installed on the top of the rotating shaft 34. The bottom of the locking block 264 is inserted into the sleeve 35. The lower brush plates 32 are arranged in a ring at equal intervals and fixedly connected to the lower end of the outer surface of the connecting rod 263. The outer side of the lower brush plates 32 is in close contact with the inner wall of the collection hopper 31. An adjusting handle 36 is fixedly connected to the bottom of the rotating shaft 34. An adjusting handle 37 is fixedly connected to the outer side of the sealing cover 33 at equal intervals. When the collection mechanism 3 of this device is running, the dust cleaned from the filter mechanism 2 falls into the collection hopper 31 below through the exhaust pipe 1. When cleaning is required... When cleaning the collection hopper 31, turn the adjusting handle 36 to rotate the rotating shaft 34. Since the bottom of the locking block 264 is inserted into the sleeve 35, and the sleeve 35 is connected to the rotating shaft 34, the rotation of the rotating shaft 34 drives the sleeve 35 to rotate the locking block 264, which in turn causes the connecting rod 263 to rotate. The lower brush plates 32, which are evenly spaced at the lower end of the outer surface of the connecting rod 263, brush the inner wall of the collection hopper 31 as the connecting rod 263 rotates, preventing dust from accumulating on the hopper wall. Turn the adjusting handle 37 to unscrew the sealing cover 33 from the bottom of the collection hopper 31. Since the lower brush plates 32 have stirred the inside of the collection hopper 31, the dust in the collection hopper 31 can be discharged more smoothly at this time. The whole process realizes the collection and cleaning of dust, ensures the continuous and stable operation of the device, and reduces the frequency and difficulty of manual cleaning.

[0029] refer to Figures 4-5 Both the upper brush plate 262 and the lower brush plate 32 are made of ceramic fiber. The cross-sectional shape of the inner wall of the sleeve 35 and the cross-sectional shape of the clamping block 264 are both set as regular hexagons. In this special exhaust device for biocombustion furnaces, the upper brush plate 262 and the lower brush plate 32 are made of ceramic fiber. Because ceramic fiber has excellent high-temperature resistance, it can remain stable in the high-temperature flue gas environment discharged from the biocombustion furnace and will not deform or be damaged due to high temperature. This ensures that the cleaning function of the filter screen 24 and the inner wall of the collection hopper 31 is not affected. The inner wall of the sleeve 35... Both the wall and the locking block 264 have regular hexagonal cross sections. This special shape design allows the locking block 264 to fit tightly into the sleeve 35. When the adjusting handle 36 is rotated to drive the rotating shaft 34 and the sleeve 35 to rotate, the locking block 264 can accurately follow the rotation of the sleeve 35, thereby stably transmitting torque to the connecting rod 263. This ensures that the connecting rod 263 drives the upper brush plate 262 and the lower brush plate 32 to rotate accurately in the expected direction and force, ensuring that the cleaning group 26 and the collection mechanism 3 can stably and efficiently complete the cleaning and collection of dust.

[0030] Operating principle and advantages: This device is equipped with a filter mechanism 2, which allows the mounting ring 21 to be placed on the top of the exhaust pipe 1 when the device is in operation. The mounting flange 4 is used to securely connect the device to the exhaust end of the combustion furnace. During operation, the flue gas generated by the combustion furnace is discharged through the exhaust pipe 1. During this period, the conical filter screen 24 plays a key role in efficiently filtering and screening the dust in the flue gas. The conical design significantly increases the filtration area of ​​the filter screen 24, enabling it to intercept dust more quickly and comprehensively, greatly improving the filtration efficiency. When it is necessary to disassemble, install, repair or replace the filter screen 24, the operation is extremely simple. Just rotate the mounting screw 23 on the fixing plate 22 to move it outward and disengage it from the exhaust pipe 1, and the mounting ring 21 can be removed from the top of the exhaust pipe 1, thereby realizing the convenient disassembly and assembly of the entire filter screen 24 and effectively reducing the maintenance difficulty.

[0031] In actual operation, this device employs a collection mechanism 3, which effectively reduces the need for frequent disassembly and assembly of the filter screen 24. After the filter screen 24 has filtered dust in the exhaust for a period of time, the adjusting handle 36 at its bottom can be rotated to drive the sleeve 35 to rotate synchronously. At the installation ring 21 section, once the installation ring 21 is correctly installed, the hexagonal locking block 264 at the bottom of the connecting rod 263 will precisely embed into the hexagonal sleeve 35, achieving a stable connection between the connecting rod 263 and the bottom rotating shaft 34. Subsequently, each time it is used, pushing the adjusting handle 36 rotates the rotating shaft 34, which in turn drives the top sleeve 35 and locking block 264 to rotate together. The rotation of locking block 264 drives the connecting rod 263 to rotate, which in turn drives the turntable 261 to rotate, causing the upper brush plates 262 on the outer side of the turntable 261 to rotate synchronously. Because the inner side of the upper brush plate 262 is in close contact with the outer surface of the filter screen 24, it can perform all-round brushing and cleaning of the outer surface of the filter screen 24, ensuring that the filter screen maintains good filtration performance at all times. The dust generated during the cleaning process will fall into the collection hopper 31. At the same time, the rotation of the connecting rod 263 will also drive the outer lower brush plate 32 to rotate, brushing the inside of the collection hopper 31 to prevent dust from accumulating at the bottom of the collection hopper 31. After cleaning, push the adjusting handle 37 to rotate the sealing cover 33 and remove it from the collection hopper 31, opening the bottom of the collection hopper 31. Since the lower brush plate 32 has thoroughly stirred the inside of the collection hopper 31, the dust in the collection hopper 31 can be automatically discharged at this time, further improving the convenience of the device and effectively solving the problems of cumbersome operation and low efficiency caused by frequent manual disassembly and assembly of the filter screen in traditional devices.

Claims

1. A special exhaust device for a biomass combustion furnace, comprising an exhaust pipe (1), characterized in that: A filter mechanism (2) is fixedly installed at the top of the exhaust pipe (1), and a collection mechanism (3) is fixedly installed at the bottom of the exhaust pipe (1). The filter mechanism (2) includes an installation ring (21). The outer side of the installation ring (21) is fixedly connected to a fixing plate (22) arranged in a ring at equal intervals. The lower end of the fixing plate (22) is threadedly connected to an installation screw (23). A filter screen cover (24) is fixedly installed on the inner side of the installation ring (21). The filter screen cover (24) is generally conical. A cleaning group (26) is provided at the bottom of the filter screen cover (24). The bottom of the cleaning group (26) is engaged with the collection mechanism (3).

2. The exhaust device for a biomass combustion furnace according to claim 1, characterized in that: An external connecting pipe (25) is fixedly installed on the top of the mounting ring (21). The external connecting pipe (25) is located on the outside of the filter screen (24). The exhaust pipe (1) is L-shaped.

3. The exhaust device for a biomass combustion furnace according to claim 2, characterized in that: The top of the external connecting pipe (25) and the inlet end of the exhaust pipe (1) are both fixedly installed with mounting flanges (4). The mounting flanges (4) have mounting holes (5) arranged in a ring at equal intervals on the outer side. The mounting holes (5) are countersunk holes.

4. The exhaust device for a biomass combustion furnace according to claim 1, characterized in that: The cleaning assembly (26) includes a turntable (261) and an upper brush plate (262). The turntable (261) is rotatably connected to the bottom of the filter screen (24). The inner side of the upper brush plate (262) is fitted and connected to the inner side of the filter screen (24). A connecting rod (263) is fixedly installed at the bottom of the turntable (261). A locking block (264) is fixedly installed at the bottom of the connecting rod (263). The bottom of the locking block (264) is inserted into the inner side of the collection mechanism (3).

5. The exhaust device for a biomass combustion furnace according to claim 4, characterized in that: The collecting mechanism (3) includes a collecting hopper (31) and a lower brush plate (32). The collecting hopper (31) is fixedly connected to the bottom of the exhaust pipe (1). A sealing cover (33) is threadedly connected to the bottom of the collecting hopper (31). A rotating shaft (34) is rotatably connected to the middle of the sealing cover (33). A sleeve (35) is fixedly installed on the top of the rotating shaft (34). The bottom of the locking block (264) is inserted into the inside of the sleeve (35). The lower brush plates (32) are arranged in a ring at equal intervals and fixedly connected to the lower end of the outer surface of the connecting rod (263). The outer side of the lower brush plate (32) is in close contact with the inner wall of the collecting hopper (31).

6. The exhaust device for a biomass combustion furnace according to claim 5, characterized in that: An adjusting handle (36) is fixedly connected to the bottom of the rotating shaft (34), and an adjusting armrest (37) is fixedly connected at equal intervals to the outer side of the sealing cover (33).

7. The exhaust device for a biomass combustion furnace according to claim 6, characterized in that: The upper brush plate (262) and the lower brush plate (32) are both ceramic fiber brush plates, and the inner wall cross-sectional shape of the sleeve (35) and the cross-sectional shape of the clamping block (264) are both set as regular hexagons.

Images