Dust falling mechanism of biomass hot blast stove

Abstract

The utility model provides a biomass hot blast stove dust falling mechanism which comprises a box body, a combustion chamber and a heat exchange chamber, the combustion chamber and the heat exchange chamber are arranged in the box body, one side of the combustion chamber is provided with a dust falling mechanism for removing dust from smoke, and the combustion chamber is communicated with the heat exchange chamber through the dust falling mechanism; an air inlet box is arranged on the dust falling mechanism and communicated with the combustion chamber through an air inlet pipe, and the air inlet box is communicated with the heat exchange chamber through an exhaust pipe. High-temperature flue gas generated by the combustion chamber is blown into the gas inlet box through the fan, the flue gas is guided and shunted through the flow guide body, so that the flue gas generates vortex in the cyclone cylinder, particles are separated out through generated centrifugal force, and dust particles are guided into the dust discharging box; and in the process that the flue gas is guided out of the exhaust pipe, the flue gas is filtered again through a filter cartridge in the exhaust pipe, the filtered high-temperature gas enters the heat exchange chamber, a reverse blowing pipe is inserted into the filter cartridge, and reverse blowing is conducted on the filter cartridge regularly so that particles adhering to the outside of the filter cartridge can be cleaned, and the filter cartridge can conduct filtering continuously.

Description

Technical Field

[0001] This utility model relates to the field of hot air furnace technology, specifically a dust reduction mechanism for a biomass hot air furnace. Background Technology

[0002] A biomass hot air furnace is a device that provides heat energy using biomass pellets as fuel. The high-temperature flue gas produced in the combustion chamber carries a lot of dust particles. The circulating dust particles will adhere to the inner wall of the heat exchange tubes, affecting the heat exchange efficiency. The accumulated dust will also affect the gas flow, and the emitted dust will further pollute the surrounding environment. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a dust removal mechanism for high-temperature flue gas in a biomass hot air furnace, so as to solve the problems mentioned in the background art.

[0004] The technical problem solved by this utility model is achieved by the following technical solution: A dust removal mechanism for a biomass hot air furnace includes a housing, and a combustion chamber and a heat exchange chamber disposed within the housing. A dust removal mechanism for removing dust from flue gas is provided on one side of the combustion chamber and is connected to the heat exchange chamber through the dust removal mechanism. An air inlet box is provided on the dust removal mechanism, and the air inlet box is connected to the combustion chamber through an air inlet pipe. The air inlet box is connected to the heat exchange chamber through an exhaust pipe. A guide fluid is provided inside the air inlet box to divert the flue gas introduced by the air inlet pipe. A cyclone tube is provided at the lower end of the air inlet box in cooperation with the guide fluid to generate a vortex wind in the incoming flue gas and use centrifugal force to separate dust particles. The lower end of the cyclone tube is connected to an ash discharge box to discharge dust particles.

[0005] As a further embodiment of this utility model:

[0006] The exhaust pipe is positioned at the center of the cyclone and inserted into the upper part of the inner cavity of the cyclone. A filter cartridge for filtering flue gas is installed inside the exhaust pipe. An air circulation space is provided between the filter cartridge and the inner wall of the exhaust pipe to filter the gas discharged into the heat exchange chamber.

[0007] As a further embodiment of this utility model:

[0008] The upper end of the exhaust pipe is provided with a tube sheet, and the filter cartridge is inserted into the through hole in the middle of the tube sheet and is detachably mounted on the tube sheet. The upper middle part of the filter cartridge is provided with an opening to guide the filtered gas into the heat exchange chamber.

[0009] As a further embodiment of this utility model:

[0010] The filter cartridge is provided with a cylindrical plate at the upper end, and a number of clamping plates are distributed at the outer end of the cylindrical plate. The upper end of the tube plate is provided with a clamping seat corresponding to the clamping plate, and a clamping groove is opened at the lower end of the clamping seat. The cylindrical plate is placed on the tube plate and rotated so that the clamping plate is clamped in the clamping groove, thereby fixing the filter cartridge. The outer end of the cylindrical plate is also provided with a lifting handle for easy disassembly and assembly by personnel.

[0011] As a further embodiment of this utility model:

[0012] The housing is equipped with a backflush pipe inserted into the filter cartridge. The backflush pipe is connected to an external air supply device through an air pipe to periodically backflush the filter cartridge to remove dust particles adhering to the outside of the filter cartridge.

[0013] As a further embodiment of this utility model:

[0014] The cyclone pipes and exhaust pipes are provided in several sets and are arranged at intervals on the air inlet box.

[0015] As a further embodiment of this utility model:

[0016] The dust discharge box includes a dust collection hopper and a screw feeder installed at the lower end of the dust collection hopper. The lower end of the cyclone is connected to the dust collection hopper to guide the separated dust particles into the dust collection hopper. The discharge port of the screw feeder receives the dust particles outside the collection box to discharge the filtered dust particles.

[0017] Compared with existing technologies, the beneficial effects of this invention are as follows: High-temperature flue gas generated in the combustion chamber is blown into the intake box by a fan. A guide fluid is used to direct and divert the flue gas, creating a vortex within the cyclone separator. Centrifugal force is used to separate particles, and dust particles are guided into the ash discharge box. As the flue gas exits through the exhaust pipe, it is filtered again by a filter cartridge within the exhaust pipe. The filtered high-temperature gas enters the heat exchange chamber. A backflush pipe is inserted into the filter cartridge, which is periodically backflushed to remove particles adhering to the outside, ensuring continuous filtration. This device improves the dust removal efficiency of the high-temperature flue gas through secondary dust removal. Multiple sets of cyclone separators and exhaust pipes ensure the flow of high-temperature gas. The cyclone separator, placed within the heat exchange chamber, exchanges heat with the air, ensuring high heat exchange efficiency. A removable panel is provided at the top of the housing corresponding to the intake box for periodic inspection and cleaning of the filter cartridge. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the dust suppression mechanism of this utility model;

[0021] Figure 4 This is a partial cross-sectional view of the dust collection mechanism of this utility model. Figure 1 ;

[0022] Figure 5 This is a partial cross-sectional view of the dust collection mechanism of this utility model. Figure 2 ;

[0023] The diagram shows the following components: 1. Housing; 2. Combustion chamber; 3. Heat exchange chamber; 4. Air inlet box; 5. Ash discharge box; 6. Filter cartridge; 41. Air inlet pipe; 42. Exhaust pipe; 43. Fluid guide; 44. Cyclone separator; 45. Tube sheet; 51. Dust collection hopper; 52. Screw feeder; 61. Drum plate; 62. Clamping plate; 63. Clamping seat; 64. Lifting handle; 65. Backflush pipe. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0025] like Figures 1-5 As shown,

[0026] This embodiment provides a dust suppression mechanism for a biomass hot air furnace, including a housing 1, a combustion chamber 2 and a heat exchange chamber 3 disposed within the housing 1. A dust suppression mechanism for removing dust from flue gas is provided on one side of the combustion chamber 2 and is connected to the heat exchange chamber 3 through the dust suppression mechanism. An air inlet box 4 is provided on the dust suppression mechanism. The air inlet box 4 is connected to the combustion chamber 2 through an air inlet pipe 41 and to the heat exchange chamber 3 through an exhaust pipe 42. A guide fluid 43 is provided inside the air inlet box 4 to divert the flue gas introduced by the air inlet pipe 41. A cyclone 44 is provided at the lower end of the air inlet box in cooperation with the guide fluid 43 to generate a vortex wind in the incoming flue gas and separate dust particles by using centrifugal force. The lower end of the cyclone 44 is connected to an ash discharge box 5 to discharge dust particles.

[0027] In this embodiment, the exhaust pipe 42 is positioned at the center of the cyclone 44 and is inserted into the upper end of the inner cavity of the cyclone 44. A filter cartridge 6 for filtering flue gas is installed inside the exhaust pipe 42. An air circulation space is provided between the filter cartridge 6 and the inner wall of the exhaust pipe 42 to filter the gas discharged into the heat exchange chamber 3.

[0028] The upper end of the exhaust pipe 42 is provided with a tube plate 45, and the filter cartridge 6 is inserted into the through hole in the middle of the tube plate 45 and is detachably mounted on the tube plate 45. The upper middle part of the filter cartridge 6 is provided with an opening to introduce the filtered gas into the heat exchange chamber 3.

[0029] The filter cartridge 6 is provided with a cylindrical plate 61 at its upper end, and a number of clamping plates 62 are distributed at the outer end of the cylindrical plate 61. The upper end of the tube plate 45 is provided with a clamping seat 63 corresponding to the clamping plate 62. The lower end of the clamping seat 63 is provided with a clamping groove. The cylindrical plate 61 is placed on the tube plate 45 and rotated so that the clamping plate 62 is clamped in the clamping groove, thereby fixing the filter cartridge 6. The outer end of the cylindrical plate 61 is also provided with a lifting handle 64 for easy disassembly and assembly by personnel.

[0030] The housing 1 is equipped with a backflush pipe 65 inserted into the filter cartridge 6. The backflush pipe 65 is connected to an external air supply device through an air pipe to periodically backflush the filter cartridge 6 to remove dust particles adhering to the outside of the filter cartridge 6.

[0031] In this embodiment, several sets of cyclone pipes and exhaust pipes 42 are provided and arranged at intervals on the air inlet box.

[0032] In this embodiment, the dust discharge box 5 includes a dust collection hopper 51 and a screw feeder 52 disposed at the lower end of the dust collection hopper 51. The lower end of the cyclone 44 is connected to the dust collection hopper 51 to guide the separated dust particles into the dust collection hopper 51. The discharge port of the screw feeder 52 receives the dust collection box to discharge the filtered dust particles.

[0033] The working principle of this utility model is as follows: the high-temperature flue gas generated in the combustion chamber 2 is blown into the air inlet box 4 by the fan. The guide fluid 43 guides and diverts the flue gas, causing the flue gas to generate vortex in the cyclone 44. The generated centrifugal force separates the particles and guides the dust particles into the ash discharge box 5. During the process of the flue gas being discharged from the exhaust pipe 42, the flue gas is filtered again through the filter cartridge 6 in the exhaust pipe 42. The filtered high-temperature gas enters the heat exchange chamber 3. The filter cartridge 6 is equipped with a backflush pipe 65, which is used to backflush the filter cartridge 6 periodically to clean the particles adhering to the outside of the filter cartridge 6, so that the filter cartridge 6 can continuously filter.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents. It should be noted that, in this document, the use of relational terms such as "first" and "second" is merely used to distinguish one entity or operation from another, and does not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In the absence of further restrictions, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A dust suppression mechanism for a biomass hot air furnace, comprising a housing, and a combustion chamber and a heat exchange chamber disposed within the housing, characterized in that: A dust removal mechanism for flue gas is provided on one side of the combustion chamber, and is connected to the heat exchange chamber through the dust removal mechanism. An air inlet box is provided on the dust removal mechanism, and the air inlet box is connected to the combustion chamber through an air inlet pipe. The air inlet box is connected to the heat exchange chamber through an exhaust pipe. The air inlet box is provided with a guide fluid to divert the flue gas introduced by the air inlet pipe. A cyclone tube is provided at the lower end of the air inlet box in cooperation with the guide fluid to generate a vortex wind in the incoming flue gas and use centrifugal force to separate dust particles. The lower end of the cyclone tube is connected to the ash discharge box to discharge the dust particles.

2. The dust suppression mechanism for a biomass hot air furnace according to claim 1, characterized in that: The exhaust pipe is positioned at the center of the cyclone and inserted into the upper part of the inner cavity of the cyclone. A filter cartridge for filtering the flue gas is installed inside the exhaust pipe, and there is a space for air circulation between the filter cartridge and the inner wall of the exhaust pipe.

3. The dust suppression mechanism for a biomass hot air furnace according to claim 2, characterized in that: The upper end of the exhaust pipe is provided with a tube sheet, and the filter cartridge is inserted into the through hole in the middle of the tube sheet and is detachably mounted on the tube sheet. The upper middle part of the filter cartridge is provided with an opening to guide the filtered gas into the heat exchange chamber.

4. The dust suppression mechanism for a biomass hot air furnace according to claim 3, characterized in that: The filter cartridge has a cylindrical plate at the upper end, and several clamping plates are distributed at the outer end of the cylindrical plate. The upper end of the tube plate is provided with a clamping seat corresponding to the clamping plate, and the lower end of the clamping seat is provided with a clamping groove. The cylindrical plate is placed on the tube plate and rotated to make the clamping plate clamp in the clamping groove, thereby fixing the filter cartridge. The outer end of the cylindrical plate is also provided with a lifting handle for easy disassembly and assembly by personnel.

5. The dust suppression mechanism for a biomass hot air furnace according to claim 2, characterized in that: The housing is equipped with a backflush pipe inserted into the filter cartridge. The backflush pipe is connected to an external air supply device through an air pipe to periodically backflush the filter cartridge to remove dust particles adhering to the outside of the filter cartridge.

6. The dust suppression mechanism for a biomass hot air furnace according to claim 2, characterized in that: The cyclone pipes and exhaust pipes are provided in several sets and are arranged at intervals on the air inlet box.

7. The dust suppression mechanism for a biomass hot air furnace according to claim 1, characterized in that: The dust discharge box includes a dust collection hopper and a screw feeder installed at the lower end of the dust collection hopper. The lower end of the cyclone is connected to the dust collection hopper to guide the separated dust particles into the dust collection hopper. The discharge port of the screw feeder receives the dust particles outside the collection box to discharge the filtered dust particles.

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