Inertia bag type combined dust collector

Abstract

The utility model provides an inertia bag type combined dust remover, which fundamentally isolates sparks and fog drops in flue gas from being contacted with a final-stage filter bag, effectively prevents the filter bag from being burnt and hardened, and comprises an impact type inertia dust removal module unit, a shutter type inertia dust removal module unit and a bag type dust removal module unit which are sequentially arranged along the flowing direction of the flue gas, the impact type inertial dust removal module unit and the shutter type inertial dust removal module unit are separated from each other through a physical partition plate, and the shutter type inertial dust removal module unit and the bag type dust removal module unit are separated from each other through a physical partition plate. The impact type inertial dust removal module unit is used for primary pre-dust removal and spark and fog drop trapping of flue gas, and a first flue gas channel is formed between the impact type inertial dust removal module unit and the shutter type inertial dust removal module unit; the shutter type inertial dust removal module unit is used for secondary dust removal of flue gas and spark and fog drop trapping, and a second flue gas channel is formed between the shutter type inertial dust removal module unit and the bag type dust removal module unit; the bag type dust removal module unit is used for filtering, purifying and removing dust of flue gas.

Description

Technical Field

[0001] This utility model belongs to the field of industrial furnace flue gas treatment engineering, specifically relating to an inertial bag filter combined dust collector. Background Technology

[0002] With increasingly stringent environmental standards, traditional electrostatic precipitators are no longer sufficient to meet new emission limits in key industries such as power, steel, cement, and coking, which require ultra-low emissions. Therefore, bag filters, as a highly efficient and reliable alternative technology, are gradually being promoted and are beginning to replace electrostatic precipitators.

[0003] However, during the promotion and application process, traditional baghouse dust collectors have also revealed some problems, hindering their further promotion. Firstly, their structural design is inadequate, with complex inlet and outlet duct structures leading to significantly higher system operating resistance than electrostatic precipitators, resulting in higher power consumption of the induced draft fan and increased operating costs for users. Secondly, they have poor adaptability to complex operating conditions. When handling abnormal flue gas with high dust concentration, high temperature and sparks, or low temperature and easy condensation, they are prone to frequent pulse-jet cleaning, filter bag burnout, or filter bag caking. These failures not only shorten the filter bag life but, more seriously, interfere with the stable operation of the dust collection system and may further endanger the safety and continuity of upstream production equipment, posing significant safety hazards.

[0004] To address the aforementioned issues, the top-vertical-inlet baghouse dust collector disclosed in Patent Publication No. CN108554075A in the Chinese Patent Document Database features a vertical inlet duct and a contracting louvered baffle. While this helps reduce resistance, the main inlet flue is located at the top of the dust collector, making the wind load unfavorable to the overall structural stability of the dust collector, and the initial investment is substantial. Furthermore, the contracting louvered baffle is located inside the baghouse dust collector, which may still result in sparks escaping to the filter bag surface and burning it. Patent Publication No. CN222445730U in the Chinese Patent Document Database discloses a low-resistance, low-leakage baghouse dust collector that places the main inlet flue inside the middle housing, with guiding mechanisms at the branch inlets. While this provides some buffering and blocking, it still fails to completely isolate sparks from the filter bags. Moreover, the flue being inside the dust collector makes maintenance inconvenient and requires a large footprint. Utility Model Content

[0005] To address the problem of sparks burning the bags in existing baghouse dust collectors, this invention provides an inertial baghouse combined dust collector. By integrating two-stage inertial dust collection with a single-stage baghouse dust collection unit and employing multiple physical isolation structures to separate the modules, it fundamentally prevents sparks and droplets in the flue gas from contacting the final-stage filter bags. This effectively prevents the filter bags from burning and caking, extends the equipment's lifespan, and features a compact structure and low system operating resistance. It can improve the operational safety and reliability of the dust collection system under complex working conditions.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] An inertial bag filter combined dust collector includes at least one impact inertial dust collection module unit, at least one louvered inertial dust collection module unit, and at least one bag filter module unit arranged sequentially along the flue gas flow direction.

[0008] The impact-type inertial dust removal module unit and the louver-type inertial dust removal module unit, as well as the louver-type inertial dust removal module unit and the bag filter module unit, are all separated from each other by physical partitions.

[0009] The impact-type inertial dust removal module unit has a flue gas inlet for primary pre-dust removal and collection of sparks and droplets, and forms a first flue gas channel between it and the louver-type inertial dust removal module unit.

[0010] The louvered inertial dust removal module unit is used for secondary dust removal of flue gas and collection of sparks and droplets, and a second flue gas channel is formed between it and the bag filter module unit.

[0011] The bag filter module has a flue gas outlet for filtering, purifying, and removing dust from the flue gas.

[0012] Furthermore, the impact-type inertial dust removal module unit includes a dust hopper a, a middle box a, an upper box a, and a baffle;

[0013] The middle box a has a flue gas inlet installed and connected to one side, an upper box a installed and connected to its top, and an ash hopper a installed and connected to its bottom; and the middle box a is equipped with several parallel baffles inside; the upper box a has an open structure on the side adjacent to the louvered inertial dust removal module unit.

[0014] Furthermore, the louvered inertial dust removal module unit includes a dust hopper b, a middle box b, an upper box b, and a louver mechanism;

[0015] The bottom of the middle box b is installed and connected to the ash hopper b;

[0016] The upper box b is installed on top of the middle box b, and the upper box b and the middle box b are isolated from each other by a partition plate, and the partition plate is provided with a through hole for installation.

[0017] The louver mechanism is located inside the middle box b and is fixedly installed at the mounting through hole to allow flue gas to circulate between the upper box b and the middle box b.

[0018] Furthermore, the upper housing b has an open structure on the side adjacent to the impact inertial dust removal module unit, and is correspondingly connected to the upper housing a of the impact inertial dust removal module unit to form a first flue gas channel for flue gas to pass through.

[0019] The middle box b and the middle box a of the impact inertial dust removal module unit are isolated from each other by a first partition.

[0020] Furthermore, the bag filter module unit includes a dust hopper c, a middle box c, a clean air chamber, a filter bag assembly, and a pulse jet cleaning assembly;

[0021] The bottom of the middle chamber c is installed and connected to the ash hopper c; the filter bag assembly is installed inside the middle chamber c;

[0022] The top of the middle box c is installed and connected to the clean air chamber. The pulse jet blowing assembly is installed in the clean air chamber, and its blowing nozzle is arranged one-to-one with the filter bag opening of each filter bag assembly.

[0023] A flue gas outlet is installed and connected to the clean air chamber.

[0024] Furthermore, the clean air chamber and the upper box b of the louvered inertial dust removal module unit are isolated from each other by a second partition.

[0025] The middle box c and the middle box b of the louvered inertial dust removal module unit are isolated from each other by a third partition. The lower part of the third partition has a connecting port as a second flue gas passage. The middle box b and the middle box c are connected to each other in the bottom area through the connecting port, and are isolated from each other in the middle and upper areas where the third partition is located.

[0026] Furthermore, the louver mechanism includes a steel column, a guide cylinder, and louver plates;

[0027] The steel column is composed of four inclined steel sections. The top of each steel section is fixedly connected to the four corners of the installation through hole, and the opening size formed by the top of the four steel sections is larger than the opening size formed by their bottom ends.

[0028] The guide cylinder is a conical structure composed of four inclined steel plates a, which is larger at the top and smaller at the bottom. It is fixedly connected to the upper end of the steel column, and the inclination is consistent with that of the steel column.

[0029] The louvered plate is composed of several steel plates b that are inclined inward from the bottom. Between each pair of steel sections, multiple steel plates b are fixedly connected from top to bottom and are located below the guide cylinder at intervals.

[0030] Furthermore, the impact-type inertial dust removal module unit and the louver-type inertial dust removal module unit each have independent dust hoppers a and b; or, the two share a single dust hopper, wherein the shared dust hopper is provided with an isolation plate that divides the internal space of the shared dust hopper into two independent dust collection chambers, which are used to collect dust from the impact-type inertial dust removal module unit and the louver-type inertial dust removal module unit, respectively.

[0031] The dust hopper of the bag filter module unit is set up independently.

[0032] Furthermore, a perforated plate is fixedly installed on the top of the middle box c, and multiple mounting holes are provided on the perforated plate. The filter bag assembly is fixedly installed at the mounting holes and extends downward into the interior of the middle box c.

[0033] Furthermore, maintenance manholes are provided on the ash hopper c, the middle box c, and the clean air chamber respectively;

[0034] The top of the air purification chamber is provided with a working hole for installing or replacing the filter bag assembly;

[0035] The internal height of the clean air chamber is configured to allow the filter bag assembly to be installed or removed from the working port.

[0036] The beneficial effects of this utility model include:

[0037] This invention connects an impact-type inertial dust collector module, a louvered inertial dust collector module, and a bag filter module in series, using multiple physical partitions to achieve effective isolation and controllable connection between the modules. The two-stage inertial dust collector module at the front end efficiently and progressively captures large dust particles, sparks, and droplets carried in the flue gas. The physical partitions between the inertial dust collector module and the bag filter module completely prevent direct contact between the inertial dust collector and the final filter bag, fundamentally solving the problems of "sparks burning the bag" and "droplets clogging the bag," thus improving the filter bag's lifespan and the system's operational safety and reliability. Furthermore, this integrated three-stage dust collection design not only improves space utilization and makes the structure more compact but also effectively reduces flue gas flow resistance and system energy consumption. In addition, the graded collection of particulate matter by different dust collector modules facilitates subsequent classification and resource utilization based on particle size and composition differences, further enhancing the overall economic and environmental benefits of the device. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0039] Figure 2 yes Figure 1 Top view;

[0040] Figure 3This is a schematic diagram of the louver mechanism;

[0041] In the diagram: 1. Impact inertial dust collector module unit; 2. Louvered inertial dust collector module unit; 3. Bag filter module unit; 11. Dust hopper a; 12. Middle box a; 13. Flue gas inlet; 14. Upper box a; 15. Baffle; 21. Dust hopper b; 22. Middle box b; 23. Upper box b; 24. Louver mechanism; 31. Dust hopper c; 32. Middle box c; 33. Clean air chamber; 34. Filter bag assembly; 35. Pulse jet cleaning assembly; 36. Flue gas outlet;

[0042] 2401, steel column; 2402, guide tube; 2403, louvered plate. Detailed Implementation

[0043] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0044] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "a," "b," "c," "first," "second," etc., are only used to distinguish components and should not be construed as indicating or implying relative importance.

[0045] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0046] This utility model provides an inertial bag filter combination dust collector, consisting of two-stage inertial dust collection and one-stage bag filter. The three dust collection stages are optimized and combined into a whole, with a compact structure and low system resistance. The first two stages serve as pre-dust removal, capturing sparks and droplets carried in the flue gas, and are isolated from the final stage bag filter, effectively protecting the filter bags and extending the service life of the equipment. The final stage bag filter provides deep dust removal, improving dust removal efficiency.

[0047] Example 1: An inertial bag filter combination dust collector, reference Figure 1-2The overall structure is a three-stage integrated dust collection system, consisting of an impact-type inertial dust collection module unit 1, a louver-type inertial dust collection module unit 2, and a bag filter module unit 3, arranged sequentially along the flue gas flow direction. These three module units are structurally independent but connected to the channel via partitions to form a unified whole.

[0048] Specifically, the impact-type inertial dust removal module unit 1 includes a dust hopper a11, a middle box a12, a flue gas inlet 13, an upper box a14, and a set of vertically arranged and parallel baffles 15. The flue gas inlet 13 is welded to the side of the middle box a12 for receiving dust-laden flue gas; the top of the middle box a12 is sealed and connected to the upper box a14, and its bottom is connected to the dust hopper a11; the baffles 15 are fixedly welded inside the middle box a12 to cause the flue gas to impact and deflect, thereby achieving preliminary separation and collection of dust, sparks, and droplets. The upper box a14 is open on the side facing the louvered inertial dust removal module unit 2.

[0049] The louvered inertial dust collector module unit 2 includes a dust hopper b21, a middle box b22, an upper box b23, and a louver mechanism 24. The bottom of the middle box b22 is connected to the dust hopper b21, and its top is separated from the upper box b23 by a horizontal partition plate with mounting holes. The louver mechanism 24 is fixedly installed at the mounting holes and extends downward into the middle box b22. Its function is to guide and accelerate the flue gas from top to bottom, using inertia to achieve secondary separation and further capture fine particulate dust, sparks, and droplets. The upper box b23 is open on the side facing the impact-type inertial dust collector module unit 1 and directly engages with the upper box a14 of the impact-type inertial dust collector module unit 1, thus forming a first flue gas channel between them. The middle box a12 of the impact-type inertial dust collector module unit 1 and the middle box b22 of the louvered inertial dust collector module unit 2 are completely separated by a first partition plate.

[0050] The louver mechanism 24, as described above, refers to Figure 3 This includes steel column 2401, guide tube 2402, louver plate 2403;

[0051] The steel column 2401 is composed of four inclined steel sections. The top of each steel section is fixedly connected to the four corners of the installation through hole. The opening size formed by the tops of the four steel sections is larger than the opening size formed by their bottoms, thus presenting a cone shape that is larger at the top and smaller at the bottom.

[0052] The guide cylinder 2402 is composed of four inclined steel plates a. The four inclined steel plates a are connected in sequence to form a cone-shaped structure that is larger at the top and smaller at the bottom. It is welded to the upper end of the steel column 2401, and the inclination is consistent with that of the steel column 2401.

[0053] The louvered plate 2403 is composed of several steel plates b with their bottoms sloping inwards. Between every two structural steel sections, multiple spaced steel plates b located below the guide cylinder 2402 are fixedly connected from top to bottom. In other words, multiple steel plates b arranged vertically are welded to the four sides of the conical frame of the structural steel column 2401, forming an overall conical column structure with louvers on all four sides. The bottom edges of each steel plate b are welded to the structural steel sections, while the top edges slope outwards and are open.

[0054] The bag filter module unit 3 includes a dust hopper c31, a middle housing c32, a clean air chamber 33, a filter bag assembly 34, a pulse jet cleaning assembly 35, and a flue gas outlet 36. The bottom of the middle housing c32 is connected to the dust hopper c31, and a tube sheet is welded to its top. The tube sheet has multiple mounting holes. The bag openings of the filter bag assembly 34 (including bag cages and filter bags, which are existing technology components) are sealed and fixed in the mounting holes and suspended downwards inside the middle housing c32 for deep filtration of the flue gas. The clean air chamber 33 is installed and connected to the top of the middle housing c32. The pulse jet cleaning assembly 35 is installed inside the clean air chamber 33, and the jet nozzles on its jet pipes are aligned with the openings of each filter bag for timed or differential pressure backflushing cleaning. The flue gas outlet 36 is welded to the side or top of the clean air chamber 33. For ease of maintenance, manholes are provided at appropriate locations in the ash hopper c31, the middle box c32, and the clean air chamber 33; the top of the clean air chamber 33 is also provided with an operating hole for hoisting and replacing the filter bag assembly, and its internal height meets the space requirements for vertical extraction of the filter bag assembly 34.

[0055] Regarding the integrated connection of the three module units: the upper box b23 of the louvered inertial dust removal module unit 2 is connected to the upper box a14 of the impact inertial dust removal module unit 1, forming a first flue gas channel for flue gas to pass through; the middle box b22 of the louvered inertial dust removal module unit 2 is completely isolated from the middle box a12 of the impact inertial dust removal module unit 1 by a first partition. The upper box b23 of the louvered inertial dust removal module unit 2 is completely isolated from the clean air chamber 33 of the bag filter module unit 3 by a second partition; the middle box b22 of the louvered inertial dust removal module unit 2 is completely separated from the middle and upper regions by a third partition, with a connecting opening only in the lower part of the third partition, so that the middle box b22 and the middle box c32 are connected to each other only in the lower region, thus forming a second flue gas channel.

[0056] The pulse jet cleaning assembly 35 uses conventional pulse cleaning, and in this embodiment, it employs horizontal pulse cleaning. It mainly includes an air tank, a pulse solenoid valve, and a pulse air duct. The air tank is located on one or both sides of the clean air chamber and connects to the compressed air interface and the pulse air duct. The pulse air duct is correspondingly arranged above the filter bag assembly 34, and a pulse solenoid valve is installed on the pulse air duct. The pulse air duct penetrates the side wall of the flue gas chamber, and the inlet is sealed. Initially, the air tank is filled with sufficient compressed air through the compressed air interface and maintains a certain pressure. At this time, the pulse solenoid valve is closed, preventing compressed air from the air tank from entering the pulse air duct. When the filter bags of the filter bag assembly 34 gradually become clogged due to the capture of particulate matter in the flue gas and require cleaning, the pulse solenoid valve opens, opening the channel between the air tank and the pulse air duct. Compressed air from the air tank enters the pulse air duct through the opened pulse solenoid valve. The compressed air in the pulse air duct is ejected in a high-speed, short pulse, acting on the filter bags of the filter bag assembly 34. The high-speed impact of the pulsed air causes strong disturbance and peeling of the particles on the filter bag. Due to inertia, the particles fall off the surface of the filter bag and into the ash hopper below. After the pulse cleaning is completed, the pulse solenoid valve closes, cutting off the channel between the air tank and the pulse air pipeline. The pulse jet assembly 35 returns to its initial state, waiting for the next cleaning cycle.

[0057] Based on the above structural configuration, the flue gas treatment process of this dust collector is as follows:

[0058] Primary inertial pre-dust removal and collection: Dust-laden flue gas first enters the middle chamber a12 of the impact inertial dust removal module unit 1 through flue gas inlet 13. Inside the middle chamber a12, the flue gas impacts and flows around a set of parallel baffles 15 at a certain flow velocity. During this process, the flow direction of the flue gas changes drastically. Utilizing the inertial effect, larger and heavier dust particles in the flue gas, as well as some sparks and droplets they carry, cannot change direction in time due to their greater inertia, and thus collide with the baffles 15 and are collected, or naturally settle under the action of gravity. The separated large dust particles, sparks, and condensate droplets fall directly into the ash hopper a11 below for storage and periodic discharge. The flue gas that has undergone preliminary purification flows upward and enters the upper chamber a14 through the top of the middle chamber a12.

[0059] Secondary louvered inertial dust collection and capture: The flue gas flowing out from the upper chamber a14 directly enters the upper chamber b23 of the adjacent louvered inertial dust collection module unit 2 through its open side. The flue gas then flows downward through the louver mechanism 24, which is fixedly installed at the through hole of the partition plate. Guided downward by the louver mechanism 24, the flue gas collides with the louver plate. The relatively small dust particles remaining in the flue gas, as well as the fine sparks and droplets that may not have been completely captured in the previous stage, flow along the center under the action of aerodynamics and fall into the ash hopper b21. The gas escapes along the louver plate and flows towards the middle chamber b22.

[0060] Three-stage bag filter: After two stages of inertial dust removal, the flue gas flows out from the lower part of the middle housing b22. Since the middle housing b22 and the middle housing c32 of the bag filter module unit 3 are completely isolated in the upper middle part by the third partition, the flue gas cannot enter directly from the top. It can only flow from the bottom part of the middle housing b22 into the bottom part of the middle housing c32 of the bag filter module unit 3 through the connecting port set at the lower part of the third partition. After being filtered from bottom to top by the filter bag assembly 34, it enters the clean air chamber 33 and is discharged through the flue gas outlet 36.

[0061] The pulse jet cleaning assembly 35 back-flushes the filter bags according to pressure difference or timed control. The removed dust falls into the ash hopper c31 below the bag filter module unit 3 and is discharged periodically. The ash discharged from ash hoppers a11, b21 and c31 can be recycled using different resource utilization measures depending on the particle size and composition.

[0062] This embodiment achieves a high degree of integration of three-stage dust removal functions through the above-described structural layout and connection relationship, and ensures the orderly and isolated flow of flue gas between modules at each level, providing a structural foundation for efficient, safe and stable dust removal operations.

[0063] The number and size of the baffles 15 in the impact-type inertial dust removal module unit 1, and the cone angle, louver angle, and number of the louver mechanism 24 in the louver-type inertial dust removal module unit 2, can be determined in detail based on the operating conditions and flow field simulation results. Multiple units of this dust collector can also be arranged in parallel to meet the operating conditions of large flue gas volumes.

[0064] Furthermore, the bag filter module unit 3 of this dust collector can be composed of one or more units combined. Figure 1 and Figure 2 The example shown is a combination of three bag filter module units 3. The bag filter module units 3 of this dust collector can be arranged in one row on one side or two rows on both sides. Figure 1 and Figure 2 The example shown is a two-column, double-sided arrangement.

[0065] Example 2: Specific configuration of baffle 15: High-strength wear-resistant steel plate is selected;

[0066] The baffle 15 is vertically arranged in the middle box a12. The height of the first baffle along the flue gas direction is 20% to 50% of the height of the flue gas inlet 13, and the height of the Nth baffle thereafter is N times the height of the first baffle.

[0067] The top of the baffle 15 is flush with the top of the flue gas inlet 13; the width of the baffle 15 is the same as the width of the middle box a12.

[0068] The above arrangement is not only beneficial for pre-dust removal and capturing sparks and droplets, but also guides the flow of flue gas and reduces pressure loss.

[0069] Example 3: Unlike Example 1, the impact-type inertial dust removal module unit 1 and the louver-type inertial dust removal module unit 2 use a shared ash hopper. In this case, a vertical isolation plate needs to be installed inside the shared ash hopper to divide its internal space into two independent ash collection chambers, which are used to collect dust from the two inertial dust removal modules respectively to prevent flue gas short circuit.

[0070] Example 4: Unlike Example 1, the pulse jet assembly 35 adopts rotary jetting, and the jetting air bag is located at the top of the clean air chamber.

[0071] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An inertial baghouse combination dust collector characterized by, The impact inertial dust removal module unit (1), the louvered inertial dust removal module unit (2) and the bag type dust removal module unit (3) are sequentially arranged along the direction of the flue gas flow; The impact inertial dust removal module unit (1) and the louvered inertial dust removal module unit (2) and the louvered inertial dust removal module unit (2) and the bag type dust removal module unit (3) are separated by a physical partition; The impact inertial dust removal module unit (1) has a flue gas inlet (13) for primary pre-dust removal and spark and mist droplet capture, and a first flue gas passage is formed between the impact inertial dust removal module unit (1) and the louvered inertial dust removal module unit (2); The louvered inertial dust removal module unit (2) is used for secondary dust removal and spark and mist droplet capture, and a second flue gas passage is formed between the louvered inertial dust removal module unit (2) and the bag type dust removal module unit (3); The bag type dust removal module unit (3) has a flue gas outlet (36) for filtering and purifying dust removal of flue gas.

2. The inertial baghouse combination dust collector according to claim 1, characterized in that, The impact inertial dust removal module unit (1) comprises a hopper a (11), a middle box body a (12), an upper box body a (14) and a baffle (15); The middle box body a (12) is installed and communicated with the flue gas inlet (13) on one side, the upper box body a (14) is installed and communicated on the top, and the hopper a (11) is installed and communicated on the bottom; and a plurality of baffles (15) are arranged in the middle box body a (12); the upper box body a (14) is open on one side adjacent to the louvered inertial dust removal module unit (2).

3. A combined inertial baghouse dust collector according to claim 2, characterized in that The louvered inertial dust removal module unit (2) comprises a hopper b (21), a middle box body b (22), an upper box body b (23) and a louver mechanism (24); The bottom of the middle box body b (22) is installed and communicated with the hopper b (21); The upper box body b (23) is installed on the top of the middle box body b (22), and the upper box body b (23) and the middle box body b (22) are isolated by a partition plate, and the partition plate is provided with an installation through hole; The louver mechanism (24) is arranged in the middle box body b (22) and fixedly installed in the installation through hole, so that the flue gas flows between the upper box body b (23) and the middle box body b (22).

4. A combined inertial baghouse dust collector according to claim 3, characterized in that The upper box body b (23) is open on one side adjacent to the impact inertial dust removal module unit (1), and is communicated with the upper box body a (14) of the impact inertial dust removal module unit (1) to form a first flue gas passage for the flue gas to pass through; The middle box body b (22) and the middle box body a (12) of the impact inertial dust removal module unit (1) are isolated by a first partition plate.

5. A combined inertial baghouse dust collector according to claim 3 or 4, characterized in that The bag type dust removal module unit (3) comprises a hopper c (31), a middle box body c (32), a clean gas chamber (33), a filter bag assembly (34) and a pulse blowing assembly (35); The bottom of the middle box body c (32) is installed and communicated with the hopper c (31); and the filter bag assembly (34) is arranged in the middle box body c (32); The middle box c (32) is provided with a clean gas chamber (33) at the top, and a pulse blowing assembly (35) is arranged in the clean gas chamber (33), and the blowing port of the pulse blowing assembly (35) is arranged in one-to-one correspondence with the filter bag port of each filter bag assembly (34). The clean gas chamber (33) is provided with a flue gas outlet (36).

6. A combined inertial baghouse dust collector according to claim 5, characterized in that The clean gas chamber (33) and the upper box b (23) of the louvered inertial dust removal module unit (2) are isolated by a second partition plate. The middle box c (32) and the middle box b (22) of the louvered inertial dust removal module unit (2) are isolated by a third partition plate, and the lower part of the third partition plate is provided with a communication port as a second flue gas passage, and the middle box b (22) and the middle box c (32) are communicated at the bottom region through the communication port, and are isolated at the middle and upper regions of the third partition plate.

7. The inertial baghouse combination dust collector according to claim 3, wherein The louver mechanism (24) comprises a profile steel column (2401), a guide cylinder (2402), and a louver plate (2403). The profile steel column (2401) is composed of four inclined profile steels, the top end of each profile steel is fixedly connected with the mounting through hole at four corners, and the opening size surrounded by the top end of the four profile steels is larger than the opening size surrounded by the bottom end of the four profile steels. The guide cylinder (2402) is a large-top-small-bottom conical cylinder structure composed of four inclined steel plates a, which is fixedly connected to the upper end of the profile steel column (2401) and has the same inclination as the profile steel column (2401). The louver plate (2403) is composed of a plurality of steel plates b which are inclined inward from the bottom, and a plurality of steel plates b which are arranged at intervals and located below the guide cylinder (2402) are fixedly connected between every two profile steels from top to bottom.

8. The inertial baghouse combination dust collector according to claim 5, wherein, The impact type inertial dust removal module unit (1) and the louvered inertial dust removal module unit (2) are respectively provided with an ash bucket a (11) and an ash bucket b (21); or, they share one ash bucket, and the shared ash bucket is provided with a partition plate inside, which divides the internal space of the shared ash bucket into two dust collecting chambers which are independent of each other and are respectively used for collecting dust from the impact type inertial dust removal module unit (1) and the louvered inertial dust removal module unit (2); The ash bucket c (31) of the bag type dust removal module unit (3) is independently arranged.

9. The inertial baghouse combination dust collector according to claim 6, wherein, The top of the middle box c (32) is fixedly provided with a flower plate, a plurality of mounting holes are formed in the flower plate, and the filter bag assembly (34) is fixedly arranged in the mounting holes and extends downward into the middle box c (32).

10. A combined inertial baghouse dust collector according to claim 9, characterized in that The ash bucket c (31), the middle box c (32), and the clean gas chamber (33) are respectively provided with manholes for maintenance; The top of the clean gas chamber (33) is provided with a work hole for mounting or replacing the filter bag assembly (34); The internal height of the clean gas chamber (33) is configured to allow the filter bag assembly (34) to be mounted or dismounted from the work hole.

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