A pulse dust collector for a fan duct

Abstract

The application provides a pulse dust removal device for a fan pipeline, comprising 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, and the gas filtering assembly comprises a filter bag, a multidirectional rotating joint, a steel reinforcement cage and a gas suction component; the top of the multidirectional rotating joint is fixedly connected with the gas suction component, the multidirectional rotating joint is covered in the inner side of the top of the filter bag, the bottom of the multidirectional rotating joint is connected with the steel reinforcement cage, and the steel reinforcement cage is arranged in the filter bag; one end of the pulse dust removal device is communicated with the gas suction component, the other end of the pulse dust removal device is communicated with the filter bag, and the pulse dust removal device is 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. The application solves the problem of poor dust removal effect by the triple design of mechanical vibration and pulse airflow combination, built-in steel reinforcement cage support and multidirectional rotating joint movable connection, and has the outstanding advantages of high dust removal efficiency and stable operation resistance.

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 removal device 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 removal device is composed of a box, a bag chamber, a dust hopper and an air inlet and outlet, and is matched with a compressed air system, a dust removal control system and a dust unloading system, and 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 rises 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 entire filter bag is not uniform. Dust is removed only by the pulse airflow, and the dust removal effect is poor. 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.

[0005] The gas filtering assembly is connected with the shell, and the gas filtering assembly comprises a filter bag, a multidirectional rotating joint, a steel reinforcement cage and an air suction part. The top of the multidirectional rotating joint is fixedly connected with the air suction part. The multidirectional rotating joint is covered in the inner side of the top of the filter bag. The bottom of the multidirectional 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.

[0006] One end of the pulse dust removal device is communicated with the air 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.

[0007] The vibration dust removal device is arranged in the shell and is communicated with the air suction part and is used for driving the filter bag to vibrate.

[0008] In one of the embodiments, the vibration dust removal device comprises a vibration mesh plate, a first crankshaft and a rotating driving mechanism.

[0009] The vibration mesh plate has a clearance hole, the clearance hole is sleeved on the bottom of the filter bag, the vibration mesh plate is arranged in contact with or not in contact with the filter bag, and the vibration mesh plate is floatingly connected with the shell.

[0010] One end of the first crankshaft is rotatably connected to the middle part of the vibrating mesh screen for driving the vibrating mesh screen to vibrate;

[0011] The rotating driving mechanism is in transmission connection with the first crankshaft for driving 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.

[0012] In one of the embodiments, the rotating driving mechanism comprises a second crankshaft and two symmetrically arranged piston connecting rod mechanisms;

[0013] 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;

[0014] The piston connecting rod mechanism is provided with a fourth air valve for discharging the gas in the piston connecting rod mechanism.

[0015] In one of the embodiments, the piston connecting rod mechanism comprises a connecting rod, a piston and a cylinder;

[0016] One end of the connecting rod is rotatably connected with the second crankshaft, the other end of the connecting rod is rotatably connected 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 supporting mesh screen.

[0017] 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;

[0018] 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 rotatably connected with the first support, the connecting block is fixedly arranged at the middle part of the first rotating shaft, the middle part 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 rotatably connected 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.

[0019] 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;

[0020] The air inlet end of the fan is sealingly connected with the top opening of the filter bag through the air suction pipeline;

[0021] The exhaust end of the fan is communicated with the air outlet pipeline, one side of the air outlet pipeline is communicated with the second air valve, the other end of the second air valve is communicated with two branch pipelines, the branch pipeline is communicated with the vibration dust removal device, and the third air valve is arranged on the branch pipeline.

[0022] In one of the embodiments, the pulse dust removal device comprises a gas return pipeline, a first air valve, a filter, a pulse valve and a gas jet nozzle.

[0023] One end of the gas return pipeline is communicated with the exhaust end of the air suction component, and the other end of the gas return pipeline is connected with the gas jet nozzle arranged at the top inlet of the filter bag.

[0024] The first air valve, the filter and the pulse valve are sequentially connected in series on the gas return pipeline.

[0025] In one of the embodiments, the side wall of the shell is provided with a gas inlet, and the bottom of the shell is provided with a dust discharge device located directly below the filter bag.

[0026] In one of the embodiments, a fixed mesh plate is fixedly arranged in the shell, the fixed mesh plate is arranged above the vibration mesh plate, and the fixed mesh plate and the vibration mesh plate are connected through a plurality of elastic members.

[0027] In one of the embodiments, a second gear is fixedly connected to the top of the second crankshaft, and a first gear is fixedly connected to the side wall of the first crankshaft, and the first gear and the second gear are engaged with each other.

[0028] 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 filter bag inside instantaneously pressurized and expanded, and the vibration 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-directional rotating joint, so as to drive the filter bag 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 fiber, 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 application solves the technical problems of poor dust removal effect and fast filter bag wear by the triple design of the combined dust removal of the mechanical vibration and the pulse airflow, the built-in steel reinforcement cage support and the multi-directional rotating joint movable connection, and has the outstanding advantages of high dust removal efficiency, stable running resistance and long filter bag life.

[0029] Additional advantages, objects, and features of the application will be set forth in part in the description which follows, and in part will become apparent to those having ordinary skill in the art upon examination of the following or can be learned from practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0030] It will be understood by those within the art that the objects and advantages of the application can be met by other embodiments not specifically described herein. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, the generality of the preceding description and application of the principles thereof to other applications and embodiments thereof. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, 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. For purposes of clarity and understanding, it is expressly intended that the drawings be considered in conjunction with the accompanying detailed description. Although embodiments of the application will be described as being implemented in one or more of hardware, software, firmware, or combinations thereof, it is understood that they can be implemented in any other way to achieve the stated purposes. In the drawings:

[0032] Figure 1 Structure diagram of the pulse dedusting device of the fan pipeline in an embodiment of the application.

[0033] 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 application.

[0034] Figure 3 Local enlarged view of B in the application. Figure 2 Local enlarged view of B in the application.

[0035] Reference signs: 1, housing; 21, filter bag; 22, fixing disc; 23, first support; 24, first rotating shaft; 25, connecting block; 26, second rotating shaft; 27, second support; 28, connecting disc; 29, steel cage; 31, fan; 32, air suction pipeline; 33, air return pipeline; 34, first air valve; 35, filter; 36, pulse valve; 37, air jet nozzle; 38, air outlet pipeline; 41, fixed mesh plate; 42, elastic member; 43, vibrating mesh plate; 51, first crankshaft; 52, first gear; 53, second gear; 54, second crankshaft; 55, connecting rod; 56, piston; 57, cylinder; 61, second air valve; 62, branch pipeline; 63, third air valve; 64, fourth air valve. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the application clearer, the following will further describe the application in conjunction with the embodiments and drawings. Herein, the illustrative embodiments of the application and their descriptions are used to explain the application, but not as a limitation to the application. In order to make the objects, technical solutions and advantages of the application clearer, the following will further describe the application in conjunction with the embodiments and drawings. Herein, the illustrative embodiments of the application and their descriptions are used to explain the application, but not as a limitation to the application.

[0037] It should be noted that, in order not to obscure the application with unnecessary details, only the structures and / or processing steps closely related to the solution according to the application are shown in the drawings, while other details not closely related to the application are omitted.

[0038] It should be emphasized that the term "comprises / comprising" when used in this text, refers to the presence of the stated features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0039] It should be noted that, if not otherwise specified, the term "connected" in this text can refer not only to direct connection, but also to indirect connection with the presence of an intermediate.

[0040] In the following, embodiments of the application will be described with reference to the accompanying drawings. In the drawings, identical reference numerals represent identical or similar parts or identical or similar steps.

[0041] With reference to Figure 1 , the embodiment of the application provides a pulse dust removal device for a fan pipeline, which comprises a shell 1, a gas filtering assembly, a pulse dust removal device and a vibration dust removal device. The pulse dust removal device for the fan pipeline provided by the embodiment of the application has remarkable beneficial effects through the synergistic effect of the unique gas filtering assembly and the vibration dust removal device.

[0042] The gas filtering assembly is connected with the shell 1, and the gas filtering assembly comprises a filter bag 21, a multi-directional rotating joint, a steel reinforcement cage 29 and an air suction component. The top of the multi-directional rotating joint is fixedly connected with the air suction component, the multi-directional rotating joint is covered in the inner side of the top of the filter bag 21, the bottom of the multi-directional rotating joint is connected with the steel reinforcement cage 29, and the steel reinforcement cage 29 is arranged in the filter bag 21 and used for supporting the filter bag 21. The rigid support structure of the steel reinforcement cage 29 arranged in the filter bag 21 provides a uniform support framework for the filter bag 21, effectively inhibits disordered and uneven expansion deformation of the filter bag 21, makes the filter bag 21 bear force more uniformly in the filtering and dust removal process, and thus greatly reduces mechanical damage and prolongs the service life of the filter bag 21.

[0043] The multi-directional rotating joint makes the entire support structure in the filter bag 21 no longer rigid and fixed. This design not only ensures that the filter bag 21 has necessary freedom of movement when being vibrated and can fully vibrate, thereby efficiently transmitting vibration energy to each part of the filter bag 21 and improving the dust removal effect, but also avoids structural stress that may be caused by complete rigid connection and protects the safety of the equipment.

[0044] 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 21, and is used for spraying pulse airflow to the inside of the filter bag 21; the vibration dust removal device is arranged in the shell 1 and is communicated with the air suction component, and is used for driving the filter bag 21 to vibrate.

[0045] In the above embodiment, in the ash removal process, the pulse airflow makes the inside of the filter bag 21 instantaneously pressurized and expanded, and at the same time, the vibration dust removal device transmits high-frequency mechanical vibration to the whole reinforcement cage and the filter bag 21 through the air suction component and the multi-directional rotating joint, so as to drive the filter bag 21 to generate high-frequency shaking. The combined ash removal mode of the air shock and the vibration can effectively crack and shake off the dust layer attached to the deep part of the filter bag 21, overcome the limitation of the single ash removal mode, make the ash removal more thorough, significantly reduce the equipment resistance, and ensure the long-term stability of the dust removal efficiency. The three designs of the mechanical vibration and the pulse airflow combined ash removal, the built-in reinforcement cage support and the multi-directional rotating joint active connection effectively solve the technical problems of poor ash 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.

[0046] In some embodiments, referring to Figure 3 The vibration dust removal device includes a vibration mesh plate 43, a first crankshaft 51 and a rotating driving mechanism; the vibration mesh plate 43 has a clearance hole, the clearance hole is sleeved on the bottom of the filter bag 21, the vibration mesh plate 43 is arranged in contact with or not in contact with the filter bag 21, and the vibration mesh plate 43 is floatingly connected with the shell 1; one end of the first crankshaft 51 is rotatably connected with the middle part of the vibration mesh plate 43, and is used for driving the vibration mesh plate 43 to vibrate; the rotating driving mechanism is in transmission connection with the first crankshaft 51, and is used for driving the first crankshaft 51 to rotate; and the rotating driving mechanism is communicated with the air suction component, so that the airflow in the air suction component drives the rotating driving mechanism to rotate.

[0047] The embodiment creatively uses the airflow of the system itself as a power source. Specifically, the rotating driving mechanism is communicated with the air suction component, so that the purified airflow can drive the rotating driving mechanism to rotate, and then drive the vibration mesh plate 43 to make high-frequency reciprocating motion through the first crankshaft 51. This design does not need to additionally configure a motor or other power source, realizes the recycling of energy, greatly reduces the running energy consumption of the equipment, meets the industrial requirements of energy saving and emission reduction, and realizes the self-driven mechanical vibration with high efficiency and energy saving.

[0048] By arranging the vibration mesh plate 43 sleeved on the bottom of the filter bag 21, the mechanical vibration can be transmitted upwards from the bottom of the filter bag. The combined force of this bottom-up vibration mode and the top-down flushing action of the top pulse airflow can effectively overcome the adhesion force and electrostatic force of the dust, especially beneficial to removing the dust accumulated at the bottom and the middle and lower sections of the filter bag, realizes thorough ash removal of the full-length range of the filter bag 21 without dead angle, and further improves the ash removal effect.

[0049] The vibration net plate 43 is driven in the middle by the first crankshaft 51, which can uniformly distribute the vibration energy to the whole net plate, and then transmit the smooth and uniform vibration to the filter bag group through the coupling of the net plate and the filter bag 21 (contact or non-contact), thereby avoiding excessive local stress concentration. At the same time, the floating connection between the vibration net plate 43 and the shell 1 effectively isolates the transmission of vibration to the main structure, ensuring the stability and service life of the shell structure, and reducing the operating noise. The vibration dust removal device of the embodiment not only realizes the innovation of energy self-supply and bottom vibration source, but also ensures the efficiency, uniformity and reliability of the vibration dust removal process, and forms a perfect complement with the pulse dust removal device, thereby constituting an advanced pulse dust removal system with high efficiency, energy saving and long service life.

[0050] In some embodiments, the rotating driving mechanism includes a second crankshaft 54 and two symmetrically arranged piston connecting rod mechanisms. The piston connecting rod mechanism is connected with the second crankshaft 54, and the piston connecting rod mechanism is connected with the air suction component so that the air flow of the air suction component drives the piston connecting rod mechanism to operate. The fourth air valve 64 is arranged on the piston connecting rod mechanism for discharging the gas in the piston connecting rod mechanism. The arrangement of the fourth air valve 64 on the piston connecting rod mechanism is the key to ensure continuous operation. The air valve is used to discharge the gas after work at the appropriate time, ensuring that the piston can smoothly complete the reset and the next work stroke. Through the timing control of the air distribution of each cylinder, the continuous and alternating action of the piston connecting rod mechanism is realized, thereby providing uninterrupted rotary power for the second crankshaft 54, and finally enabling the dust removal vibration to continue, thereby ensuring the continuity of the dust removal effect.

[0051] In the above embodiment, the purified gas flow drives the piston connecting rod mechanism to move linearly, and then the second crankshaft 54 converts the linear motion into stable rotary motion, and finally drives the first crankshaft 51. This conversion method is mature and reliable, has small energy loss, can provide continuous and sufficient torque power, and ensures that the vibration net plate 43 can generate stable vibration with sufficient strength and frequency, and the dust removal power is strong. The two symmetrically arranged piston connecting rod mechanisms drive the same second crankshaft 54, which balances the force and torque received by the crankshaft during rotation, greatly reduces the vibration and wear during operation, and ensures the ultra-high stability and reliability of the entire driving system. The design ingeniously uses the gas residual pressure in the air suction component (outlet pipeline 38) as a power source, without any external power supply or gas source.

[0052] In some embodiments, the piston connecting rod mechanism includes a connecting rod 55, a piston 56 and a cylinder barrel 57. One end of the connecting rod 55 is rotationally connected with the second crankshaft 54, the other end of the connecting rod 55 is rotationally connected with the piston 56, the piston 56 is slidingly connected with the inner wall of the cylinder barrel 57, and the cylinder barrel 57 is fixedly connected with the shell 1 through the support net plate.

[0053] In some embodiments, with reference to Figure 2 The multi-directional rotating joint comprises a fixed disc 22, a first support 23, a first rotating shaft 24, a connecting block 25, a second rotating shaft 26, a second support 27, and a connecting disc 28. The top of the fixed disc 22 is fixedly connected with the air suction component. The first support 23 is fixedly arranged at the bottom of the fixed disc 22. The two ends of the first rotating shaft 24 are rotatably connected with the first support 23. The connecting block 25 is fixedly arranged at the middle part of the first rotating shaft 24. The middle part of the second rotating shaft 26 is fixedly connected with the connecting block 25. The second rotating shaft 26 is perpendicular to the first rotating shaft 24. The second support 27 is arranged below the second rotating shaft 26 and is rotatably connected with the two ends of the second rotating shaft 26. The bottom of the second support 27 is fixedly connected with the connecting disc 28. The bottom of the connecting disc 28 is fixedly connected with the reinforcement cage 29.

[0054] The multi-directional rotating joint composed of the fixed disc 22, the first rotating shaft 24, the second rotating shaft 26, and the connecting block 25, etc. is creatively provided with a mechanical structure with multi-directional rotating freedom. The second rotating shaft 26 is perpendicular to the first rotating shaft 24, which enables the connecting disc 28 and the reinforcement cage 29 at the bottom to swing at a composite angle, rather than being limited to rotation in a single plane. This design ensures that the high-frequency vibration generated by the vibration dedusting device can be transmitted to the entire reinforcement cage 29 and filter bag 21 without loss and obstruction through the joint, thereby causing more sufficient and intense shaking of the filter bag, greatly improving the dust removal efficiency.

[0055] When the dust is removed jointly, the filter bag is simultaneously impacted by the pulse airflow and pulled by the mechanical vibration, and the stress condition is complex. The traditional rigid connection is prone to stress concentration, which causes the top of the filter bag to be abraded or torn. The multi-directional rotating joint of the embodiment, as a movable joint, can adapt to and offset these complex forces through its flexible deflection, thereby isolating the stress from the fixed structures such as the shell 1 and the air suction component, effectively protecting the head of the filter bag 21 from damage, significantly prolonging the service life of the filter bag, and improving the reliability and safety of the system operation. The joint structure ensures that the reinforcement cage 29 and the filter bag 21 supported thereby can still move freely when the pulse airflow is blown and expanded. This enables the “air” and “vibration” dust removal forces to be applied on the dust layer simultaneously and in the same direction, producing a “1+1>2” synergistic dust removal effect, rather than interfering with each other, thereby achieving the most thorough dust stripping.

[0056] In some embodiments, the air suction component includes a fan 31, an air suction pipeline 32, an air outlet pipeline 38, a second air valve 61, a branch pipeline 62, a third air valve 63, and a fourth air valve 64; the air inlet end of the fan 31 is connected to the top opening of the filter bag 21 through the air suction pipeline 32; the air outlet end of the fan 31 is connected to the air outlet pipeline 38, one side of the air outlet pipeline 38 is connected to the second air valve 61, the other end of the second air valve 61 is connected to two branch pipelines 62, the branch pipelines 62 are connected to the vibration dust removal device, and the third air valve 63 is arranged on the branch pipeline 62.

[0057] In the embodiment, a highly integrated and unified air path system is formed by the fan 31, the air suction pipeline 32, the air outlet pipeline 38, the branch pipeline 62, and a series of air valves (the second air valve 61, the third air valve 63, and the fourth air valve 64). The fan 31 serves as a core power source, which is responsible for extracting the purified gas, and the high-pressure air flow discharged by the fan 31 is guided to the vibration dust removal device through the air outlet pipeline 38 and the branch pipeline 62, and serves as the power for driving the piston connecting rod mechanism. This achieves the use of the energy of a single fan for both “filtering air suction” and “driving dust removal”, greatly improves the energy utilization efficiency of the entire system, and has a significant energy-saving effect. The configuration of the second air valve 61 and the third air valve 63 plays a key role in air flow scheduling. In the normal filtering mode, the air valves can be closed to cut off the air path to the driving device, ensuring that all air flows are used for purification. When dust removal is needed, the second air valve 61 and the third air valve 63 are opened, and part of the high-pressure air flow is accurately introduced into the cylinder barrel 57 of the piston connecting rod mechanism to drive it to operate. This mode switching controlled by the air valves is simple, fast in response, and high in reliability, and realizes flexible and automatic conversion between the dust removal and dust removal working states.

[0058] In some embodiments, the pulse dust removal device 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 air outlet end of the air suction component, the other end of the return air pipeline 33 is connected to the jet nozzle 37, the jet nozzle 37 is arranged at the top inlet of the filter bag 21; the first air valve 34, the filter 35, and the pulse valve 36 are sequentially connected in series on the return air pipeline 33. The first air valve 34 can be used as a switch of 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 the blockage and wear of the precise valve and the nozzle, and is a key protection device for ensuring the long-term stable operation of the pulse system.

[0059] The embodiment sets up a back gas pipeline 33 to lead out a part of the purified high-pressure gas from the exhaust end of the fan 31 and perform secondary purification through the filter 35, thereby providing a very clean and stable pressure gas source for pulse cleaning. Compared with the traditional use of external compressed air (which may contain water and oil) or direct use of uncleaned circulating gas, this completely avoids the risk of pollutants blocking the air jet nozzle 37 or contaminating the filter bag 21, ensuring that each pulse blowing has the strong burst force required by the design, and the cleaning effect is remarkable and reliable.

[0060] The pulse valve 36 is the core control element of pulse cleaning. Its high-speed opening and closing characteristics can convert the continuous gas flow in the back gas pipeline 33 into an instant release of a powerful pulse wave, which performs high-intensity, short-period "explosive" cleaning on the filter bag 21. This precise control avoids continuous waste of gas and achieves the best cleaning kinetic energy with the smallest gas consumption, greatly improving the utilization efficiency of gas flow and saving energy.

[0061] In some embodiments, the side wall of the shell 1 has a gas inlet, and the bottom of the shell 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 shell 1 and the dust discharge device on the bottom of the shell directly below the filter bag 21, an ideal gas-solid separation path is constructed. After the dust-containing gas enters from the side, it is evenly diffused and passes upward through the filter bag, and the purified gas is sucked out from the top. The gravity dust cleaned off naturally falls down and is collected and discharged by the dust discharge device (such as a star-shaped dust discharge valve or a screw conveyor) directly below.

[0062] In some embodiments, a fixed mesh plate 41 is fixedly arranged inside the shell 1, the fixed mesh plate 41 is arranged above the vibrating mesh plate 43, and the fixed mesh plate 41 and the vibrating mesh plate 43 are connected through a plurality of elastic members 42. The fixed mesh plate 41 is fixed to the shell 1, providing a stable mounting basis for the entire vibrating assembly. The elastic members 42 (such as springs or rubber pads) play a key "soft connection" role, which can effectively transmit the vibration of the vibrating mesh plate 43 to the filter bag and greatly buffer and absorb most of the reverse force, preventing high-frequency vibration from being transmitted to the main structure of the shell 1.

[0063] In some embodiments, the top of the second crankshaft 54 is fixedly connected with a second gear 53, and the side wall of the first crankshaft 51 is fixedly connected with a first gear 52, and the first gear 52 and the second gear 53 are in meshing engagement. Through the meshing engagement of the first gear 52 and the second gear 53, the rotating motion of the second crankshaft 54 is accurately and synchronously transmitted to the first crankshaft 51. The gear transmission has the advantages of constant transmission ratio, high power transmission efficiency and compact structure. This design ensures that the rotating power generated by the airflow driving can be accurately and synchronously converted into the reciprocating motion required by the vibrating screen plate 43 without delay, ensuring that the frequency and amplitude of the vibration are stable and reliable, so that the dust removal action is more consistent and effective.

[0064] It should be understood that the present application is not limited to the particular configurations and processes described above and shown in the drawings. For the sake of brevity, detailed descriptions of known methods are omitted herein. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order of the steps, after understanding the spirit of the present application.

[0065] In the present application, the features described and / or exemplified for one embodiment can be used in the same way or in a similar way in one or more other embodiments, and / or in combination with or instead of the features of other embodiments.

[0066] The above description is only the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the embodiments of the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

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 installed inside the housing (1) and is connected to the suction component to drive the filter bag (21) to vibrate; 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. 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 air valve (64) for the discharge of gas inside the piston-connecting rod mechanism; 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).

2. The pulse dust removal device for fan ducts according to claim 1, 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.

3. 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).

4. 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).

5. 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).

6. The pulse dust removal device for fan ducts according to claim 1, 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).

7. The pulse dust removal device for fan ducts according to claim 1, 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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