Biomass gas dry purification device

Abstract

The utility model belongs to the field of biomass gas purification, specifically relates to a kind of biomass gas dry purification device, including gas discharge pipe, the inside of gas discharge pipe is provided with fixed pipe, the bottom of fixed pipe is fixedly connected with servo motor;Rotary lever integration multilayer classification filtration and dynamic cleaning mechanism are driven by servo motor, on the one hand, filter component adopts the multilayer structure of " first primary filter screen, second intermediate filter screen, third fine filter screen " to realize the classification capture of particulate impurities, significantly improve purification precision, on the other hand, cleaning component is driven by rotary lever to clean brush no dead angle contact filter component surface, and cooperate with top fan blade to generate upward airflow to accelerate particle falling, realize the real-time dynamic cleaning of filter layer, fundamentally solve the pain point that traditional purification device needs frequent shutdown manual cleaning due to filter layer blockage, first dry purification and automation maintenance are deeply coupled, and the continuous operation efficiency and purification stability of device are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of biomass gas purification technology, specifically a dry purification device for biomass gas. Background Technology

[0002] Biomass gas refers to combustible gas generated from biomass (such as crop straw, forestry waste, livestock and poultry manure, organic waste and other renewable organic materials) through biochemical or thermochemical conversion technology. Its main components are methane (CH4), carbon monoxide (CO), hydrogen (H2), etc. It is a clean, renewable, low-carbon energy source that can replace fossil fuels (such as natural gas and coal) for energy supply.

[0003] Patent CN201342379Y discloses a dry purification device for flue gas from a biomass power plant. It includes a primary filter cyclone separator whose outlet is connected to the inlet of a second intermediate filter cyclone separator via a pipe. Feed ports are located at the lower ends of both the primary and intermediate filter cyclone separators, and ash discharge devices are installed at these ports. The outlet of the second intermediate filter cyclone separator is connected to the inlet of a dry heat exchanger via a pipe, and the outlet of the dry heat exchanger is connected to the inlet of an electrostatic precipitator via a pipe. The outlet of the electrostatic precipitator is then connected to the inlet of a gas buffer via a pipe. This patent offers advantages such as effectively separating gaseous and solid particulate matter from flue gas, not using water or other auxiliary substances during cooling without polluting the surrounding environment, adaptability to various harsh working environments, and improved applicability of the entire process and equipment. However, this patent has certain drawbacks. Dust clogging can easily occur in the electrostatic precipitator and gas buffer during gas filtration, requiring manual cleaning and maintenance. Cleaning necessitates machine shutdown for maintenance, affecting processing efficiency and making it inconvenient for users.

[0004] Therefore, it is necessary to provide a dry purification device for biomass gas to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a dry purification device for biomass gas, which solves the problem that dust can easily clog the filtered gas in electrostatic precipitators and gas buffers, requiring manual cleaning and maintenance, which necessitates machine shutdown for maintenance and affects processing efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a biomass gas dry purification device, including a gas exhaust pipe, a fixed pipe inside the gas exhaust pipe, a servo motor fixedly connected to the bottom of the fixed pipe, a rotating rod fixedly connected to the output end of the servo motor, the top of the rotating rod extending through to the top of the fixed pipe, a filter assembly inside the fixed pipe, and a cleaning assembly on the surface of the rotating rod. The filter assembly is used to capture particles in the flue gas; The cleaning component is used to clean the filter component.

[0007] Preferably, the filtration assembly includes a first primary filter screen located inside the fixed tube, a second intermediate filter screen disposed inside the first primary filter screen, and a third fine filter screen disposed on top of the second intermediate filter screen.

[0008] Preferably, the cleaning assembly includes a cleaning plate, which is fixedly connected to the surface of the rotating rod. A cleaning brush is fixedly connected to the top of the cleaning plate, and the number of cleaning brushes is several. A fan blade is fixedly connected to the top of the surface of the rotating rod.

[0009] Preferably, the inner wall of the fixed tube is fixedly connected with a support plate, and the number of support plates is several.

[0010] Preferably, a fixing groove is provided on the right side of the gas exhaust pipe, and a collection hopper is provided inside the fixing groove.

[0011] Preferably, the bottom of the fixed tube is connected to a collection tube, which is located at the top of the collection hopper.

[0012] Preferably, a waterproof cap is fixedly connected to the top of the fixed pipe, and the waterproof cap is located at the top of the gas exhaust pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model integrates a multi-layer graded filtration and dynamic cleaning mechanism through a servo motor-driven rotating rod. On the one hand, the filtration component adopts a multi-layer structure of "first primary filter, second intermediate filter, and third fine filter" to achieve graded capture of particulate impurities, significantly improving purification accuracy. On the other hand, the cleaning component, driven by the rotating rod, has a cleaning brush that contacts the surface of the filtration component without dead angles, and works with the top fan blades to generate an upward airflow to accelerate the falling of particles, achieving real-time dynamic cleaning of the filter layer. This fundamentally solves the pain point of traditional purification devices requiring frequent shutdowns for manual cleaning due to filter layer blockage. For the first time, dry purification and automated maintenance are deeply coupled, greatly improving the continuous operation efficiency and purification stability of the device.

[0014] 2. This utility model uses support plates evenly distributed on the inner wall of the fixed tube to prevent the filter components from shifting or deforming under the impact of airflow or cleaning disturbance, ensuring the stability of the filtration path. The detachable design of the collection hopper and the fixed groove, combined with the directional conveying of the bottom collection tube, enables centralized collection of impurities and rapid maintenance. The top waterproof cover effectively blocks external moisture and dust, protecting the filter components and electrical components such as the servo motor (reducing the risk of short circuits). These auxiliary structures enhance the overall performance of the device in terms of stability, maintainability, and environmental adaptability. Although not core functions, they significantly improve the reliability and ease of use in practical applications. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model; Figure 2 This is a three-dimensional cross-sectional view of the structure of this utility model; Figure 3 This is a three-dimensional exploded view of the structure of this utility model; Figure 4 The structure of this utility model Figure 3 Enlarged diagram of point A in the middle.

[0016] In the diagram: 1. Gas exhaust pipe; 2. Fixed pipe; 3. Servo motor; 4. Rotating rod; 5. Filter assembly; 51. First primary filter; 52. Second intermediate filter; 53. Third fine filter; 6. Cleaning assembly; 61. Cleaning plate; 62. Cleaning brush; 63. Fan blade; 7. Support plate; 8. Fixed groove; 9. Collection hopper; 10. Collection pipe; 11. Waterproof cover. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 A biomass gas dry purification device includes a gas exhaust pipe 1, a fixed pipe 2 is provided inside the gas exhaust pipe 1, a servo motor 3 is fixedly connected to the bottom of the fixed pipe 2, a rotating rod 4 is fixedly connected to the output end of the servo motor 3, the top of the rotating rod 4 extends through to the top of the fixed pipe 2, a filter assembly 5 is provided inside the fixed pipe 2, and a cleaning assembly 6 is provided on the surface of the rotating rod 4. Filter assembly 5 is used to capture particles in flue gas; Cleaning component 6 is used to clean filter component 5.

[0019] Please see Figure 4 The filter assembly 5 includes a first primary filter 51 located inside the fixed tube 2. A second intermediate filter 52 is disposed inside the first primary filter 51, and a third fine filter 53 is disposed on the top of the second intermediate filter 52.

[0020] Furthermore, through the setting of filter component 5, the multi-layer structure can capture particulate impurities of different sizes and types in a graded manner (such as the first primary filter 51 intercepting large particles, and the second intermediate filter 52 intercepting fine particles or aerosols), avoiding the problem of clogging or incomplete purification caused by excessive load on a single filter layer, significantly improving the purification quality of biomass gas, and meeting the requirements for gas purity in subsequent combustion, power generation and other scenarios.

[0021] Please see Figure 4 The cleaning component 6 includes a cleaning plate 61, which is fixedly connected to the surface of the rotating rod 4. A cleaning brush 62 is fixedly connected to the top of the cleaning plate 61. There are several cleaning brushes 62. A fan blade 63 is fixedly connected to the top of the surface of the rotating rod 4.

[0022] Furthermore, by setting up the cleaning component 6, several cleaning brushes 62 are driven to fully contact the surface of the filter component 5, ensuring sufficient cleaning coverage and avoiding local particle residue. The large number of cleaning brushes 62 can adapt to the multi-layer structure of the filter component 5, ensuring no dead corners in the cleaning. The auxiliary airflow enhances the cleaning effect. The fan blades 63 at the top of the rotating rod 4 generate an upward airflow as it rotates. On the one hand, this can disturb the gas flow at the top of the filter component 5, reducing particle accumulation in the filter component 5. On the other hand, it can accelerate the falling of the cleaned particles to the bottom of the fixed tube 2, preventing particles from re-attaching and improving cleaning efficiency.

[0023] Please see Figure 4 The inner wall of the fixed pipe 2 is fixedly connected with a support plate 7, and there are several support plates 7.

[0024] Furthermore, the support plates 7 prevent the filter assembly 5 from shifting, deforming, or shaking due to the impact of flue gas flow or the rotational disturbance of the cleaning assembly 6, ensuring accurate positioning of the filter layer, stable particle capture path, consistent purification effect, and stress dispersion to extend the life of the device. The evenly distributed support plates 7 can disperse the pressure of the filter assembly 5 and airflow on the inner wall of the fixed pipe 2, avoid structural damage caused by local stress concentration, and improve the overall mechanical strength and service life of the device.

[0025] Please see Figure 2 A fixed groove 8 is provided on the right side of the gas exhaust pipe 1, and a collection hopper 9 is provided inside the fixed groove 8.

[0026] Furthermore, the collection hopper 9 is designed to prevent particle leakage caused by its displacement during device operation. The built-in design of the collection hopper 9 allows for the concentrated collection of particulate impurities, preventing them from falling into the gas exhaust pipe 1 and contaminating other components. This keeps the inside of the device clean, simplifies maintenance, and allows for quick disassembly and installation via the fixing slot 8. This facilitates regular cleaning or recycling of particulate impurities (such as biomass ash), reduces the difficulty and time cost of manual maintenance, and improves the ease of use of the device.

[0027] Please see Figure 3 The bottom of the fixed pipe 2 is connected to the collection pipe 10, and the collection pipe 10 is located at the top of the collection hopper 9.

[0028] Furthermore, by setting up the collection pipe 10, particles are prevented from scattering or remaining at the bottom of the fixed pipe 2 during the falling process, ensuring the impurity collection rate. The collection pipe 10 is located at the top of the collection hopper 9, allowing particles to fall directly into the collection hopper 9, reducing losses in intermediate links, protecting the internal environment of the fixed pipe 2, and forming a closed conveying channel to prevent particles from accumulating and clumping at the bottom of the fixed pipe 2, avoiding pipe blockage or corrosion caused by impurity accumulation, maintaining smooth airflow inside the fixed pipe 2, and ensuring the long-term stable operation of the purification device.

[0029] Please see Figure 2 A waterproof cover 11 is fixedly connected to the top of the fixed pipe 2, and the waterproof cover 11 is located at the top of the gas exhaust pipe 1.

[0030] Furthermore, the waterproof cover 11 prevents the filter components 5 (such as filter screens and filter membranes) from becoming damp, causing particle adhesion, pore blockage, or material deterioration, ensuring stable filtration performance. At the same time, it prevents moisture from contacting electrical components such as the servo motor 3, reducing the risk of short circuits and improving the safety and reliability of the device in humid environments (such as biomass gas production sites). The top protection extends the life of the components. The waterproof cover 11 is located at the top of the gas exhaust pipe 1, which can prevent external dust and foreign objects from falling into the fixed pipe 2, reducing the wear of moving parts such as the rotating rod 4 and the fan blade 63, and extending the service life of the cleaning component 6 and the drive system.

[0031] The specific implementation process of this utility model is as follows: After the device is started, the servo motor 3 drives the rotating rod 4 to rotate, driving the cleaning component 6 to operate synchronously; biomass gas enters from the bottom of the fixed pipe 2 and flows upward. First, it passes through the filter component 5 (composed of a first primary filter 51, a second intermediate filter 52, and a third fine filter 53) which is stably supported by several support plates 7 on the inner wall of the fixed pipe 2. The multi-layer graded design accurately captures particulate impurities in the gas, achieving dry and efficient purification. At the same time, the cleaning plate 61 on the surface of the rotating rod 4 drives several cleaning brushes 62 to rotate at high speed, making full contact with the surface of the filter component 5, cleaning the attached particulate impurities without dead corners, and avoiding When the filter layer becomes clogged, the fan blades 63 at the top of the rotating rod 4 generate an upward airflow as they rotate. This disturbs the airflow at the top of the filter assembly 5 to reduce particle accumulation and accelerates the falling of the cleaned particles to the bottom of the fixed pipe 2. The falling particles are directed into the collection hopper 9 in the fixed groove 8 on the right side of the gas exhaust pipe 1 through the collection pipe 10 connected to the bottom of the fixed pipe 2. This achieves centralized collection of impurities and prevents them from scattering and contaminating the inside of the device. The waterproof cover 11 at the top of the device effectively blocks external moisture and dust from entering. The entire process achieves automated coordination of filtration, cleaning, and impurity collection, significantly improving the continuous operation efficiency and purification quality of the device and reducing maintenance costs.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A biomass gas dry cleaning apparatus, characterized by: The gas exhaust pipe (1) includes a fixed pipe (2) inside the gas exhaust pipe (1), a servo motor (3) is fixedly connected to the bottom of the fixed pipe (2), a rotating rod (4) is fixedly connected to the output end of the servo motor (3), the top of the rotating rod (4) extends through to the top of the fixed pipe (2), a filter assembly (5) is provided inside the fixed pipe (2), and a cleaning assembly (6) is provided on the surface of the rotating rod (4). The filter assembly (5) is used to capture particles in the flue gas; The cleaning component (6) is used to clean the filter component (5).

2. The biomass gas dry cleaning device according to claim 1, characterized in that: The filter assembly (5) includes a first primary filter (51) located inside the fixed tube (2), a second intermediate filter (52) is provided inside the first primary filter (51), and a third fine filter (53) is provided on the top of the second intermediate filter (52).

3. The biomass gas dry cleaning device according to claim 1, characterized in that: The cleaning assembly (6) includes a cleaning plate (61), which is fixedly connected to the surface of the rotating rod (4). A cleaning brush (62) is fixedly connected to the top of the cleaning plate (61), and there are several cleaning brushes (62). A fan blade (63) is fixedly connected to the top of the surface of the rotating rod (4).

4. The biomass gas dry cleaning device according to claim 1, characterized in that: The inner wall of the fixed tube (2) is fixedly connected with a support plate (7), and the number of support plates (7) is several.

5. The biomass gas dry cleaning device according to claim 1, characterized in that: A fixed groove (8) is provided on the right side of the gas discharge pipe (1), and a collection hopper (9) is provided inside the fixed groove (8).

6. The biomass gas dry cleaning device according to claim 5, characterized in that: The bottom of the fixed tube (2) is connected to a collection tube (10), which is located at the top of the collection hopper (9).

7. The biomass gas dry cleaning device according to claim 1, wherein: A waterproof cover (11) is fixedly connected to the top of the fixed pipe (2), and the waterproof cover (11) is located on the top of the gas exhaust pipe (1).

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