Pulse dust removal device of fan pipeline

Abstract

The invention provides a pulse dust removal device for a fan pipeline. The pulse dust removal device comprises a shell, a gas filtering assembly, a pulse dust removal device body and a vibration dust removal device body. The gas filtering assembly is connected with the shell and comprises a filtering bag, a multidirectional rotating joint, a reinforcement cage and a gas suction component; the top of the multidirectional rotating joint is fixedly connected with the air suction component, the multidirectional rotating joint is wrapped on the inner side of the top of the filter bag, the bottom of the multidirectional rotating joint is connected with the reinforcement cage, and the reinforcement cage is arranged in the filter bag; one end of the pulse dust removal device is communicated with the air suction component, and the other end of the pulse dust removal device is communicated with the filter bag and used for spraying pulse airflow into the filter bag; the vibration dust removal device is arranged in the shell and is used for driving the filter bag to vibrate. Through triple design of mechanical vibration and pulse airflow combined ash removal, built-in reinforcement cage supporting and multi-directional rotating joint movable connection, the problems of poor ash removal effect and the like are effectively solved, and the dust removal device has the outstanding advantages of high dust removal efficiency, stable running resistance and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust removal equipment, and particularly relates to a pulse dust removal device of a fan pipeline. BACKGROUND

[0002] The pulse dust remover is a new type of pulse bag type dust removal equipment, belongs to the field of air pollution control, and is widely applied to flue gas treatment in the industries of steelmaking electric furnace, boiler, building material and chemical industry. The main body of the pulse dust remover is composed of a box, a bag chamber, a dust hopper and air inlets and outlets, is matched with a compressed air system, a dust removal control system and a dust unloading system, supports a fixed resistance / time combined dust removal mode. With the prolongation of the filtration time, the dust layer on the filter bag is continuously thickened, and the resistance of the dust removal equipment is continuously increased. When the resistance of the equipment is increased to a set value, the dust removal device starts to remove dust. In the existing pulse dust removal device, the top of the filter bag is fixedly arranged. In the pulse dust removal process, the filter bag is blown up like a balloon and expands. The expansion position of the whole filter bag is not uniform. The dust removal effect is poor only by the pulse airflow. SUMMARY

[0003] In view of this, the present application provides a pulse dust removal device of a fan pipeline to eliminate or improve one or more defects in the prior art.

[0004] The present application provides a pulse dust removal device of a fan pipeline, which comprises a shell, a gas filtering assembly, a pulse dust removal device and a vibration dust removal device. The gas filtering assembly is connected with the shell. The gas filtering assembly comprises a filter bag, a multi-directional rotating joint, a steel reinforcement cage and a gas suction part. The top of the multi-directional rotating joint is fixedly connected with the gas suction part. The multi-directional rotating joint is covered in the inner side of the top of the filter bag. The bottom of the multi-directional rotating joint is connected with the steel reinforcement cage. The steel reinforcement cage is arranged in the filter bag and is used for supporting the filter bag. One end of the pulse dust removal device is communicated with the gas suction part. The other end of the pulse dust removal device is communicated with the filter bag and is used for spraying pulse airflow into the filter bag. The vibration dust removal device is arranged in the shell and is communicated with the gas suction part and is used for driving the filter bag to vibrate.

[0005] In one of the embodiments, the vibration dust removal device comprises a vibration net plate, a first crankshaft and a rotating driving mechanism. The vibration net plate has a clearance hole. The clearance hole is sleeved on the bottom of the filter bag. The vibration net plate is arranged in contact with or not in contact with the filter bag. The vibration net plate is floatingly connected with the shell. One end of the first crankshaft is rotatably connected with the middle part of the vibration net plate and is used for driving the vibration net plate to vibrate. The rotating driving mechanism is in transmission connection with the first crankshaft and used to drive the first crankshaft to rotate, and the rotating driving mechanism is in communication with the air suction component so that the airflow in the air suction component drives the rotating driving mechanism to rotate.

[0006] In one of the embodiments, the rotating driving mechanism comprises a second crankshaft and two symmetrically arranged piston connecting rod mechanisms. The piston connecting rod mechanism is connected with the second crankshaft, and the piston connecting rod mechanism is connected with the air suction component so that the airflow of the air suction component drives the piston connecting rod mechanism to operate. A fourth air valve is arranged on the piston connecting rod mechanism and used to discharge the gas in the piston connecting rod mechanism.

[0007] In one of the embodiments, the piston connecting rod mechanism comprises a connecting rod, a piston and a cylinder. One end of the connecting rod is in rotational connection with the second crankshaft, the other end of the connecting rod is in rotational connection with the piston, the piston is in sliding connection with the inner wall of the cylinder, and the cylinder is fixedly connected with the shell through a support net plate.

[0008] In one of the embodiments, the multi-directional rotating joint comprises a fixed disc, a first support, a first rotating shaft, a connecting block, a second rotating shaft, a second support and a connecting disc. The top of the fixed disc is fixedly connected with the air suction component, the first support is fixedly arranged at the bottom of the fixed disc, the two ends of the first rotating shaft are in rotational connection with the first support, the connecting block is fixedly arranged at the middle of the first rotating shaft, the middle of the second rotating shaft is fixedly connected with the connecting block, the second rotating shaft is perpendicular to the first rotating shaft, the second support is arranged below the second rotating shaft and is in rotational connection with the two ends of the second rotating shaft, the bottom of the second support is fixedly connected with the connecting disc, and the bottom of the connecting disc is fixedly connected with the reinforcement cage.

[0009] In one of the embodiments, the air suction component comprises a fan, an air suction pipeline, an air outlet pipeline, a second air valve, a branch pipeline, a third air valve and a fourth air valve. The air inlet end of the fan is sealingly connected with the top opening of the filter bag through the air suction pipeline. The air outlet end of the fan is in communication with the air outlet pipeline, one side of the air outlet pipeline is in communication with the second air valve, the other end of the second air valve is in communication with two branch pipelines, the branch pipelines are in communication with the vibration dust removal device, and the third air valve is arranged on the branch pipeline.

[0010] In one of the embodiments, the pulse dust removal device comprises a back air pipeline, a first air valve, a filter, a pulse valve and a jet nozzle. One end of the return air pipeline is communicated with the exhaust end of the air suction component, and the other end of the return air pipeline is connected with the air jet nozzle arranged at the top inlet of the filter bag. The first air valve, the filter and the pulse valve are sequentially connected in series on the return air pipeline.

[0011] In one of the embodiments, the sidewall of the shell is provided with a gas inlet, and the bottom of the shell is provided with a dust discharging device located directly below the filter bag.

[0012] In one of the embodiments, a fixed mesh plate is fixedly arranged in the shell, the fixed mesh plate is arranged above the vibrating mesh plate, and the fixed mesh plate and the vibrating mesh plate are connected through a plurality of elastic members.

[0013] In one of the embodiments, the top of the second crankshaft is fixedly connected with a second gear, and the sidewall of the first crankshaft is fixedly connected with a first gear, and the first gear and the second gear are meshed with each other.

[0014] The pulse dust removal device of the fan pipeline in the embodiment of the application has the following technical effects: the pulse airflow makes the inside of the filter bag instantaneously pressurized and expanded, and the vibrating dust removal device transmits the high-frequency mechanical vibration to the whole steel reinforcement cage and the filter bag through the air suction component and the multi-direction rotating joint, so that the filter bag is driven to produce high-frequency shaking. The combined dust removal mode of the air vibration and the shaking can effectively crack and shake off the dust layer attached to the deep part of the filter bag, overcome the limitation of the single dust removal mode, make the dust removal more thorough, significantly reduce the equipment resistance, and ensure the long-term stability of the dust removal efficiency. The three designs of the combined dust removal of the mechanical vibration and the pulse airflow, the built-in steel reinforcement cage support and the multi-direction rotating joint movable connection effectively solve the technical problems of poor dust removal effect and fast filter bag wear, and have the outstanding advantages of high dust removal efficiency, stable running resistance and long filter bag life.

[0015] Additional advantages, objects, and features of the application will be set forth in part by the description that follows, and will become apparent to those skilled in the art from the following description, or can be learned by practice of the application. The objects and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0016] It will be understood by those skilled in the art that the objects and advantages of the present application can not be limited to the above specifically described, and the above and other objects that can be achieved by the present application will be more clearly understood according to the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the principles of the application. The components in the drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the application. To facilitate an understanding of some portions of this application, corresponding portions of the drawings have been exaggerated in some aspects and minimized in others.

[0018] Figure 1 Structure diagram of the pulse dedusting device of the fan pipeline in an embodiment of the application.

[0019] Figure 2 Structure diagram of the pulse dedusting device of the fan pipeline in an embodiment of the application. Figure 1 Local enlarged view of A in the embodiment of the application.

[0020] Figure 3 Local enlarged view of B in the embodiment of the application. Figure 2 Local enlarged view of B in the embodiment of the application.

[0021] Fig. 1 is a shell; 21 is a filter bag; 22 is a fixing disc; 23 is a first support; 24 is a first rotating shaft; 25 is a connecting block; 26 is a second rotating shaft; 27 is a second support; 28 is a connecting disc; 29 is a steel cage; 31 is a fan; 32 is an air suction pipeline; 33 is an air return pipeline; 34 is a first air valve; 35 is a filter; 36 is a pulse valve; 37 is a jet nozzle; 38 is an air outlet pipeline; 41 is a fixed mesh plate; 42 is an elastic member; 43 is a vibrating mesh plate; 51 is a first crankshaft; 52 is a first gear; 53 is a second gear; 54 is a second crankshaft; 55 is a connecting rod; 56 is a piston; 57 is a cylinder; 61 is a second air valve; 62 is a branch pipeline; 63 is a third air valve; 64 is a fourth air valve. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the present application with reference to the embodiments and drawings. Here, the illustrative embodiments of the present application and their descriptions are used to explain the present application but do not limit the present application.

[0023] It should also be noted that, in order to avoid obscuring the present application due to unnecessary details, only the structures and / or processing steps closely related to the solutions according to the present application are shown in the drawings, and other details not closely related to the present application are omitted.

[0024] It should be emphasized that the terms "comprises / comprising" when used in this specification are taken to specify the presence of stated features, elements, steps or components but do not preclude the presence or addition of one or more other features, elements, steps, components, or groups thereof.

[0025] It should also be noted that, unless otherwise specified, the term "connection" in this article can refer not only to a direct connection, but also to an indirect connection involving an intermediary.

[0026] In the following description, embodiments of the invention will be illustrated with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar parts, or the same or similar steps.

[0027] Reference Figure 1 This invention provides a pulse dust collector for fan ducts, comprising a housing 1, a gas filter assembly, a pulse dust collector, and a vibration dust collector. The pulse dust collector for fan ducts provided by this invention achieves significant beneficial effects through the synergistic effect of its unique gas filter assembly and vibration dust collector.

[0028] The gas filtration assembly is connected to the housing 1. The gas filtration assembly includes a filter bag 21, a multi-directional rotating joint, a reinforcing cage 29, and an air intake component. The top of the multi-directional rotating joint is fixedly connected to the air intake component. The multi-directional rotating joint is covered inside the top of the filter bag 21, and the bottom of the multi-directional rotating joint is connected to the reinforcing cage 29. The reinforcing cage 29 is set inside the filter bag 21 to support the filter bag 21. By setting a rigid support structure, the reinforcing cage 29, inside the filter bag 21, this invention provides a uniform support skeleton for the filter bag 21, effectively suppressing its disordered and uneven expansion and deformation. This makes the filter bag 21 more evenly stressed during filtration and dust removal, thereby significantly reducing mechanical damage and extending the service life of the filter bag 21.

[0029] The multi-directional rotary joint makes the internal support structure of the entire filter bag 21 no longer rigidly fixed. This design not only ensures that the filter bag 21 has the necessary freedom of movement when subjected to vibration, allowing it to shake fully and efficiently transmit vibration energy to every part of the filter bag 21, thus improving the dust removal effect, but also avoids the structural stress that may be caused by a completely rigid connection, protecting the safety of the equipment.

[0030] One end of the pulse dust collector is connected to the suction component, and the other end of the pulse dust collector is connected to the filter bag 21, which is used to spray pulse airflow into the filter bag 21; the vibration dust collector is installed inside the housing 1 and is connected to the suction component, which is used to drive the filter bag 21 to vibrate.

[0031] In the above embodiments, during the dust removal process, the pulsed airflow causes the filter bag 21 to pressurize and expand instantaneously. Simultaneously, the vibration dust removal device transmits high-frequency mechanical vibration to the entire reinforcing cage and filter bag 21 through the suction component and multi-directional rotary joint, thereby causing the filter bag 21 to vibrate throughout at high frequencies. This combined air-vibration dust removal mode effectively cracks and shakes off the dust layer adhering deep to the fibers of the filter bag 21, overcoming the limitations of single dust removal methods, making dust removal more thorough, significantly reducing equipment resistance, and ensuring long-term stability of dust removal efficiency. This invention, through its triple design of combined mechanical vibration and pulsed airflow dust removal, built-in reinforcing cage support, and multi-directional rotary joint movable connection, effectively solves technical problems such as poor dust removal effect and rapid filter bag wear, and has outstanding advantages such as high dust removal efficiency, stable operating resistance, and long filter bag life.

[0032] In some embodiments, refer to Figure 3 The vibration dust removal device includes a vibrating screen plate 43, a first crankshaft 51, and a rotation drive mechanism. The vibrating screen plate 43 has a clearance hole, which is fitted onto the bottom of the filter bag 21. The vibrating screen plate 43 is either in contact with or not in contact with the filter bag 21. The vibrating screen plate 43 is floatingly connected to the housing 1. One end of the first crankshaft 51 is rotatably connected to the middle of the vibrating screen plate 43 to drive the vibrating screen plate 43 to vibrate. The rotation drive mechanism is driven by the first crankshaft 51 to drive the first crankshaft 51 to rotate. The rotation drive mechanism is connected to the suction component so that the airflow in the suction component drives the rotation drive mechanism to rotate.

[0033] This embodiment creatively utilizes the system's own airflow as a power source. Specifically, the rotation drive mechanism is connected to the intake component, enabling the purified airflow to drive the rotation drive mechanism to rotate, which in turn drives the vibrating screen plate 43 to perform high-frequency reciprocating motion via the first crankshaft 51. This design eliminates the need for additional motors or other power sources, achieving energy recycling, significantly reducing the equipment's operating energy consumption, meeting industrial requirements for energy conservation and emission reduction, and realizing efficient and energy-saving self-driven mechanical vibration.

[0034] By installing a vibrating mesh plate 43 at the bottom of the filter bag 21, mechanical vibration can be transmitted from the bottom of the filter bag upwards. This bottom-up vibration, combined with the top-down scouring effect of the pulsed airflow, effectively overcomes the adhesion and electrostatic forces of dust, and is particularly beneficial for removing dust accumulated at the bottom and lower middle sections of the filter bag. This achieves thorough cleaning of the entire length of the filter bag 21 without any dead angles, further improving the cleaning effect.

[0035] The vibrating screen plate 43 is driven in the middle by the first crankshaft 51. This connection method allows the vibration energy to be evenly distributed throughout the screen plate. Through the coupling between the screen plate and the filter bags 21 (in contact or non-contact), the vibration is smoothly and evenly transmitted to the filter bag group, avoiding excessive local stress concentration. Simultaneously, the floating connection between the vibrating screen plate 43 and the shell 1 effectively isolates the transmission of vibration to the main structure, ensuring the stability and lifespan of the shell structure and reducing operating noise. This embodiment of the vibrating dust collector not only achieves self-supplied energy and innovative bottom vibration source, but also ensures the high efficiency, uniformity, and reliability of the vibration cleaning process. It perfectly complements the pulse cleaning device, together forming a highly efficient, energy-saving, and long-lasting advanced pulse dust collection system.

[0036] In some embodiments, the rotation drive mechanism includes a second crankshaft 54 ​​and two symmetrically arranged piston-connecting rod mechanisms. The piston-connecting rod mechanisms are connected to the second crankshaft 54 ​​and to the intake component, so that the airflow from the intake component drives the piston-connecting rod mechanisms. A fourth air valve 64 is provided on the piston-connecting rod mechanism for venting gas from the mechanism. The fourth air valve 64 is crucial for ensuring continuous operation. This valve releases the gas after power stroke at appropriate times, ensuring the piston can smoothly complete its reset and the next power stroke. Through the timing control of the air distribution to each cylinder, continuous alternating motion of the piston-connecting rod mechanism is achieved, providing uninterrupted rotational power to the second crankshaft 54, ultimately ensuring continuous dust removal vibration and maintaining the continuity of the dust removal effect.

[0037] In the above embodiment, the purified airflow drives the piston-connecting rod mechanism in linear motion, which is then converted into stable rotational motion via the second crankshaft 54, ultimately driving the first crankshaft 51. This conversion method is mature and reliable, with minimal energy loss, and provides continuous and sufficient torque power, ensuring that the vibrating screen 43 can generate stable vibrations with sufficient intensity and frequency, resulting in strong dust removal power. The use of two symmetrically arranged piston-connecting rod mechanisms to drive the same second crankshaft 54 ​​balances the forces and torques experienced by the crankshaft during rotation, greatly reducing vibration and wear during operation and ensuring extremely high stability and reliability of the entire drive system. This design cleverly utilizes the residual pressure of the airflow in the intake component (exhaust pipe 38) as a power source, eliminating the need for any external power or air source.

[0038] In some embodiments, the piston-connecting rod mechanism includes a connecting rod 55, a piston 56, and a cylinder 57; one end of the connecting rod 55 is rotatably connected to the second crankshaft 54, the other end of the connecting rod 55 is rotatably connected to the piston 56, the piston 56 is slidably connected to the inner wall of the cylinder 57, and the cylinder 57 is fixedly connected to the housing 1 through a support mesh plate.

[0039] In some embodiments, refer toFigure 2 The multi-directional rotary joint includes a fixed plate 22, a first bracket 23, a first rotating shaft 24, a connecting block 25, a second rotating shaft 26, a second bracket 27, and a connecting plate 28. The top of the fixed plate 22 is fixedly connected to the suction component. The first bracket 23 is fixedly installed at the bottom of the fixed plate 22. The two ends of the first rotating shaft 24 are rotatably connected to the first bracket 23. The connecting block 25 is fixedly installed in the middle of the first rotating shaft 24. The middle of the second rotating shaft 26 is fixedly connected to the connecting block 25. The second rotating shaft 26 is perpendicular to the first rotating shaft 24. The second bracket 27 is installed below the second rotating shaft 26 and is rotatably connected to both ends of the second rotating shaft 26. The bottom of the second bracket 27 is fixedly connected to the connecting plate 28. The bottom of the connecting plate 28 is fixedly connected to the reinforcing cage 29.

[0040] This embodiment creatively provides a mechanical structure with multiple degrees of freedom of rotation through a multi-directional rotary joint consisting of a fixed plate 22, a first rotating shaft 24, a second rotating shaft 26, and a connecting block 25. The second rotating shaft 26 is perpendicular to the first rotating shaft 24, allowing the connecting plate 28 and the reinforcing cage 29 at their bottom to swing at multiple angles, rather than being limited to rotation within a single plane. This design ensures that the high-frequency vibrations generated by the vibratory dust collector can be transmitted losslessly and unimpeded in all directions to the entire reinforcing cage 29 and filter bag 21 through this joint, thereby causing the filter bag to vibrate more fully and violently, greatly improving the dust removal efficiency.

[0041] During combined dust removal, the filter bag is simultaneously subjected to the impact of pulsed airflow and the tension of mechanical vibration, resulting in a complex stress situation. Traditional rigid connections are prone to stress concentration, leading to wear or tear at the top of the filter bag. The multi-directional rotary joint in this embodiment, acting as a movable joint, can adapt to and counteract these complex forces through its flexible deflection, thereby isolating the stress from the fixed structures such as the housing 1 and the suction components. This effectively protects the head of the filter bag 21 from damage, significantly extending its service life and improving the reliability and safety of the system operation. This joint structure ensures that the reinforcing cage 29 and the filter bag 21 it supports can still move freely with the mechanical vibration during pulsed airflow purging and expansion. This allows the two dust removal forces, "air" and "vibration," to be applied synchronously and in the same direction to the dust layer, producing a synergistic dust removal effect of "1+1>2" rather than mutual interference, thus achieving the most thorough dust removal.

[0042] In some embodiments, the suction component includes a fan 31, a suction pipe 32, an exhaust pipe 38, a second air valve 61, a branch pipe 62, a third air valve 63, and a fourth air valve 64; the inlet end of the fan 31 is sealed to the top opening of the filter bag 21 through the suction pipe 32; the exhaust end of the fan 31 is connected to the exhaust pipe 38, one side of the exhaust pipe 38 is connected to the second air valve 61, the other end of the second air valve 61 is connected to two branch pipes 62, the branch pipes 62 are connected to the vibration dust removal device, and the third air valve 63 is disposed on the branch pipes 62.

[0043] This embodiment utilizes a highly integrated integrated air circuit system comprised of a fan 31, an intake pipe 32, an outlet pipe 38, branch pipes 62, and a series of valves (second valve 61, third valve 63, and fourth valve 64). The fan 31, as the core power source, not only draws in the purified gas, but its discharged high-pressure airflow is also guided through the outlet pipe 38 and branch pipes 62 to the vibration dust collector, serving as the power to drive the piston-connecting rod mechanism. This achieves the simultaneous use of the energy of a single fan for both "filtration and intake" and "driving and cleaning," significantly improving the energy utilization efficiency of the entire system and resulting in remarkable energy savings. The configuration of the second and third valves 61 plays a crucial role in airflow regulation. In normal filtration mode, these valves can be closed, cutting off the airflow to the drive device and ensuring that all airflow is used for purification. When cleaning is required, opening the second and third valves 61 allows a portion of the high-pressure airflow to be precisely introduced into the cylinder 57 of the piston-connecting rod mechanism, driving its operation. This mode switching method, controlled by an air valve, is simple, responsive, and highly reliable, enabling flexible and automatic switching between dust removal and cleaning modes.

[0044] In some embodiments, the pulse dust collector includes a return air pipeline 33, a first air valve 34, a filter 35, a pulse valve 36, and a jet nozzle 37. One end of the return air pipeline 33 is connected to the exhaust end of the suction component, and the other end of the return air pipeline 33 is connected to the jet nozzle 37, which is located at the top inlet of the filter bag 21. The first air valve 34, the filter 35, and the pulse valve 36 are connected in series on the return air pipeline 33. The first air valve 34 can act as a switch for the main pipeline, facilitating the isolation and maintenance of the subsequent filter 35 or pulse valve 36. The filter 35 ensures that the gas entering the pulse valve 36 and the jet nozzle 37 is absolutely clean, effectively preventing clogging and wear of precision valves and nozzles, and is a key protective device to ensure the long-term stable operation of the pulse system.

[0045] This embodiment provides an extremely clean and stable air source for pulse cleaning by drawing a portion of the purified high-pressure gas from the exhaust end of the blower 31 through a return air pipeline 33 and subjecting it to secondary purification via a filter 35. Compared to the traditional use of external compressed air (which may contain water or oil) or the direct use of unpurified recirculated air, this completely avoids the risk of contaminants clogging the nozzle 37 or contaminating the filter bag 21, ensuring that each pulse jet has the powerful burst force required by the design, resulting in a significant and reliable cleaning effect.

[0046] The pulse valve 36 is the core control component of the pulse cleaning system. Its high-speed opening and closing characteristics can convert the continuous airflow in the return air pipeline 33 into a powerful pulse wave released instantaneously, performing high-intensity, short-cycle "explosive" cleaning of the filter bag 21. This precise control avoids continuous gas waste, achieving optimal cleaning kinetic energy with minimal gas consumption, greatly improving airflow utilization efficiency, and saving energy.

[0047] In some embodiments, the side wall of the housing 1 has a gas inlet, and the bottom of the housing 1 is provided with a dust discharge device located directly below the filter bag 21. By setting the gas inlet on the side wall of the housing 1 and providing the dust discharge device at the bottom of the housing directly below the filter bag 21, an ideal gas-solid separation path is constructed. After the dust-laden gas enters from the side, it diffuses evenly and passes upward through the filter bag, and the purified gas is drawn out from the top. The gravity dust that is removed falls naturally and is collected and discharged by the dust discharge device (such as a rotary valve or screw conveyor) directly below.

[0048] In some embodiments, a fixed mesh plate 41 is fixedly disposed inside the housing 1, and the fixed mesh plate 41 is positioned above the vibrating mesh plate 43. The fixed mesh plate 41 and the vibrating mesh plate 43 are connected by multiple elastic elements 42. The fixed mesh plate 41 is fixed to the housing 1, providing a stable mounting base for the entire vibration assembly. The elastic elements 42 (such as springs or rubber pads) play a crucial "soft connection" role, effectively transmitting the vibration of the vibrating mesh plate 43 to the filter bag, and greatly buffering and absorbing most of the reverse force, preventing high-frequency vibration from being transmitted to the main structure of the housing 1.

[0049] In some embodiments, a second gear 53 is fixedly connected to the top of the second crankshaft 54, and a first gear 52 is fixedly connected to the side wall of the first crankshaft 51. The first gear 52 and the second gear 53 mesh with each other. Through the meshing of the first gear 52 and the second gear 53, the rotational motion of the second crankshaft 54 ​​is precisely and synchronously transmitted to the first crankshaft 51. Gear transmission has the advantages of constant transmission ratio, high power transmission efficiency, and compact structure. This design ensures that the rotational power generated by airflow can be converted into the reciprocating motion required by the vibrating screen 43 without delay and with precise synchronization, ensuring that the frequency and amplitude of vibration are stable and reliable, thereby making the dust removal action more consistent and effective.

[0050] It should be clarified that the present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of the present invention.

[0051] In this invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with or in place of features of other embodiments.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the embodiments of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pulse dust collector for a fan duct, characterized in that, Includes housing (1), gas filter assembly, pulse dust collector and vibration dust collector; The gas filtration assembly is connected to the housing (1). The gas filtration assembly includes a filter bag (21), a multi-directional rotating joint, a steel cage (29), and an air intake component. The top of the multi-directional rotating joint is fixedly connected to the air intake component. The multi-directional rotating joint is covered inside the top of the filter bag (21). The bottom of the multi-directional rotating joint is connected to the steel cage (29). The steel cage (29) is disposed inside the filter bag (21) to support the filter bag (21). One end of the pulse dust collector is connected to the suction component, and the other end of the pulse dust collector is connected to the filter bag (21) for injecting pulse airflow into the filter bag (21); The vibration dust removal device is located inside the housing (1) and is connected to the suction component to drive the filter bag (21) to vibrate.

2. The pulse dust removal device for fan ducts according to claim 1, characterized in that, The vibration dust removal device includes a vibrating screen (43), a first crankshaft (51), and a rotation drive mechanism; The vibrating mesh plate (43) has a clearance hole, which is fitted onto the bottom of the filter bag (21). The vibrating mesh plate (43) is either in contact with or not in contact with the filter bag (21). The vibrating mesh plate (43) is floatingly connected to the housing (1). One end of the first crankshaft (51) is rotatably connected to the middle of the vibrating mesh plate (43) to drive the vibrating mesh plate (43) to vibrate; The rotation drive mechanism is connected to the first crankshaft (51) for driving the first crankshaft (51) to rotate. The rotation drive mechanism is connected to the intake component so that the airflow in the intake component drives the rotation drive mechanism to rotate.

3. The pulse dust removal device for fan ducts according to claim 2, characterized in that, The rotation drive mechanism includes a second crankshaft (54) and two symmetrically arranged piston-connecting rod mechanisms. The piston connecting rod mechanism is connected to the second crankshaft (54) and the piston connecting rod mechanism is connected to the intake component so that the airflow of the intake component drives the piston connecting rod mechanism to operate; The piston-connecting rod mechanism is provided with a fourth gas valve (64) for venting gas from the piston-connecting rod mechanism.

4. The pulse dust removal device for fan ducts according to claim 3, characterized in that, The piston-connecting rod mechanism includes a connecting rod (55), a piston (56), and a cylinder (57). One end of the connecting rod (55) is rotatably connected to the second crankshaft (54), and the other end of the connecting rod (55) is rotatably connected to the piston (56). The piston (56) is slidably connected to the inner wall of the cylinder (57), and the cylinder (57) is fixedly connected to the housing (1) through a support mesh plate.

5. The pulse dust removal device for fan ducts according to claim 1, characterized in that, The multi-directional rotary joint includes a fixed plate (22), a first bracket (23), a first rotating shaft (24), a connecting block (25), a second rotating shaft (26), a second bracket (27), and a connecting plate (28). The top of the fixed plate (22) is fixedly connected to the air intake component. The first bracket (23) is fixedly installed at the bottom of the fixed plate (22). The two ends of the first rotating shaft (24) are rotatably connected to the first bracket (23). The connecting block (25) is fixedly installed in the middle of the first rotating shaft (24). The middle of the second rotating shaft (26) is fixedly connected to the connecting block (25). The second rotating shaft (26) is perpendicular to the first rotating shaft (24). The second bracket (27) is installed below the second rotating shaft (26) and is rotatably connected to both ends of the second rotating shaft (26). The bottom of the second bracket (27) is fixedly connected to the connecting plate (28). The bottom of the connecting plate (28) is fixedly connected to the steel cage (29).

6. The pulse dust removal device for fan ducts according to claim 1, characterized in that, The air intake component includes a fan (31), an air intake pipe (32), an air outlet pipe (38), a second air valve (61), a branch pipe (62), a third air valve (63), and a fourth air valve (64). The air inlet of the fan (31) is sealed to the top opening of the filter bag (21) through the air intake pipe (32); The exhaust end of the fan (31) is connected to the air outlet pipe (38), one side of the air outlet pipe (38) is connected to the second air valve (61), the other end of the second air valve (61) is connected to the two branch pipes (62), the branch pipes (62) are connected to the vibration dust removal device, and the third air valve (63) is installed on the branch pipes (62).

7. The pulse dust removal device for fan ducts according to claim 1, characterized in that, The pulse dust removal device includes a return air pipeline (33), a first air valve (34), a filter (35), a pulse valve (36), and an air nozzle (37). One end of the return air pipe (33) is connected to the exhaust end of the intake component, and the other end of the return air pipe (33) is connected to the jet nozzle (37), which is located at the top inlet of the filter bag (21). The first air valve (34), filter (35) and pulse valve (36) are connected in series on the return air line (33).

8. The pulse dust removal device for fan ducts according to claim 1, characterized in that, The side wall of the housing (1) has a gas inlet, and the bottom of the housing (1) is provided with a dust discharge device, which is located directly below the filter bag (21).

9. The pulse dust removal device for fan ducts according to claim 2, characterized in that, A fixed mesh plate (41) is fixedly installed inside the housing (1). The fixed mesh plate (41) is located above the vibration mesh plate (43). The fixed mesh plate (41) and the vibration mesh plate (43) are connected by multiple elastic elements (42).

10. The pulse dust removal device for fan ducts according to claim 3, characterized in that, A second gear (53) is fixedly connected to the top of the second crankshaft (54), and a first gear (52) is fixedly connected to the side wall of the first crankshaft (51). The first gear (52) and the second gear (53) mesh with each other.

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