Air inlet device of bag-type dust collector

Abstract

The present application belongs to the technical field of cloth bag dust removal, and particularly relates to a cloth bag dust collector air inlet device, which comprises a box body, a discharge hopper, a partition plate, an air outlet, a volume expansion cylinder, an air inlet pipe and a flow splitting assembly, the flow splitting assembly comprising a rotary joint, a hollow rotating shaft, a plurality of air conveying pipes and a plurality of air injection heads; the present application makes the concentrated dust-containing airflow first pass through the volume expansion and speed reduction, and then form a rotating upward airflow below the round port, so as to perform multi-stage dispersion and uniform distribution on the dust-containing gas, and make the airflow enter the filter bag more uniformly, avoid local high-speed scouring and uneven filtering load, simultaneously use the volume expansion and speed reduction, rotating centrifugal force and gravity to make the large particle dust pre-settle, reduce the impact and abrasion of the large particle dust on the filter bag, and further improve the utilization rate of the filter bag filtering area and the service life; and the rotating injection does not need additional driving, and has simple structure and stable operation.

Description

Technical Field

[0001] This invention belongs to the field of bag filter technology, specifically relating to an air inlet device for a bag filter. Background Technology

[0002] A baghouse dust collector is a dust removal device that uses filter bags to filter dust-laden gas to achieve gas-solid separation. It is widely used in industries such as building materials, metallurgy, chemicals, and power. When the baghouse dust collector is working, dust-laden gas typically enters the dust collection chamber through the inlet pipe and is then conveyed from the bottom of the chamber to the filtration area where the filter bags are installed. After being filtered by the filter bags, the dust and gas are separated.

[0003] In existing baghouse dust collectors, the inlet pipe is typically located at the bottom of the dust collection box. Dust-laden gas enters the relatively large dust collection box through the small cross-sectional area of ​​the inlet pipe, rapidly diffusing and changing direction over a short distance. This easily leads to uneven distribution of airflow velocity and flow rate in different areas of the dust collection box. Dust collector bags closer to the inlet direction or located on the main airflow path are subjected to continuous scouring by the high-speed dust-laden airflow, while those farther from the main airflow path handle relatively smaller flow rates, resulting in uneven filtration loads on the dust collector bags at different locations. This not only hinders the full utilization of the filter area of ​​the dust collector bags but also causes faster wear in areas constantly subjected to concentrated dust-laden airflow, thus affecting the service life of the dust collector bags. Simultaneously, larger dust particles in the dust-laden gas directly enter the filtration area with the high-speed airflow, further exacerbating the impact and wear on the dust collector bags.

[0004] In response, existing technologies often employ structures such as fixed guide vanes and guide blades to divert dust-laden airflow. However, the adjustment methods of fixed guide structures are relatively simple, and their ability to reduce speed, disperse, and pre-separate large dust particles from high-speed, concentrated dust-laden airflow still needs improvement.

[0005] Therefore, how to effectively slow down and disperse the concentrated dust-laden airflow in multiple stages before it enters the filter area of ​​the dust collector bag, so that the airflow can be transported more evenly to different areas, and at the same time reduce the local wear caused by larger dust particles directly impacting the dust collector bag with the airflow, is a technical problem that the air intake structure of the existing bag dust collector needs to further solve. Summary of the Invention

[0006] The purpose of this invention is to provide an air intake device for a bag filter dust collector, which solves the technical problems in the prior art where the air intake structure is insufficient in its ability to reduce and disperse concentrated dust-laden airflow and pre-separate large dust particles, easily leading to uneven airflow distribution in the dust collector box, uneven filter load on the dust collector bags, and localized wear.

[0007] This invention discloses an air inlet device for a bag filter dust collector, comprising: Box; The discharge hopper is located at the bottom of the box and communicates with the interior of the box; A partition plate is disposed inside the box body, dividing the box body into an upper chamber located above the partition plate and a lower chamber located below the partition plate. A circular opening is provided on the partition plate, and the circular opening connects the upper chamber and the lower chamber. An air outlet is located on the upper outer side of the housing and communicates with the upper chamber. An expansion cylinder is vertically arranged within the lower chamber; The air inlet pipe has its output end sealed and inserted into the lower cavity from the lower outer side of the box body, and is connected to the bottom end of the expansion cylinder; The diversion component is disposed in the lower cavity and corresponds vertically to the circular opening; The splitter component includes: A rotary joint is located at the top of the expansion cylinder; A hollow rotating shaft, with its top end closed and its bottom end rotatably connected to the top end of the expansion cylinder via the rotary joint, and its inner cavity communicating with the inner cavity of the expansion cylinder; Multiple air supply pipes are spaced apart circumferentially on the outer wall of the hollow rotating shaft and extend outward from the hollow rotating shaft; and the end of the air supply pipe near the hollow rotating shaft is connected to the inner cavity of the hollow rotating shaft, while the end away from the hollow rotating shaft is closed. Multiple nozzles are provided, with each of the air supply pipes having multiple nozzles obliquely arranged on it, and the nozzles being connected to the air supply pipes; the nozzle direction of each nozzle is configured to have a tangential component about the axis of the hollow rotating shaft and an upward component along the axis of the hollow rotating shaft, so as to drive the hollow rotating shaft to rotate through the jet reaction force generated by the tangential component, and to form a rotating upward airflow below the circular opening through the upward component.

[0008] This application allows the concentrated dust-laden airflow to first undergo expansion and deceleration, and then form a rotating upward airflow below the circular opening. This multi-stage dispersion and uniform distribution of the dust-laden gas ensures that the airflow enters the filter bag more evenly, avoiding localized high-speed scouring and uneven filtration load. At the same time, the expansion and deceleration, rotational centrifugal force, and gravity cause large dust particles to settle in advance, reducing the impact and wear of large dust particles on the filter bag, thereby improving the utilization rate and service life of the filter bag filtration area. Furthermore, the rotary jet cleaning does not require additional drive, has a simple structure, and operates stably.

[0009] Based on the above technical solution, the solution of this application can be further improved as follows: Preferably, it further includes: Multiple reinforcing ribs are arranged at intervals along the circumference of the partition plate, and each reinforcing rib is fixedly connected between the outer periphery of the bottom surface of the partition plate and the inner wall of the box body. This solution strengthens the connection between the partition plate and the box body, improves the rigidity and deformation resistance of the partition plate, and reduces the vibration and deformation of the partition plate under the impact of airflow and the load of the filter bag.

[0010] Preferably, it further includes: The annular seat is coaxially arranged with the hollow rotating shaft, and the ends of the plurality of air supply pipes away from the hollow rotating shaft are all fixedly connected to the inner sidewall of the annular seat. Multiple levers are spaced apart on the outer periphery of the annular seat along the circumference of the annular seat; A striking component is disposed in the lower cavity and located below the reinforcing rib, and the striking end of the striking component is correspondingly disposed to one of the reinforcing ribs; Each of the aforementioned levers rotates with the annular seat and intermittently contacts the striking component during rotation, thereby driving the striking component to strike the reinforcing rib. This solution improves the rigidity and dynamic balance of the rotating component, enables the striking of the reinforcing rib to remove dust, reduces dust adhesion and accumulation at the bottom of the partition plate and at the reinforcing rib, and eliminates the need for additional power sources such as motors, thus simplifying the structure, reducing energy consumption and maintenance, and improving operational stability.

[0011] Preferably, the striking component includes: The housing is fixedly installed within the lower cavity; The first rotating shaft is horizontally rotatably disposed inside the housing, with its first end extending outside the housing; An elastic reset element is disposed inside the housing and connected between the housing and the first rotating shaft, for resetting the first rotating shaft; The striking rod is fixedly installed at the first end of the first rotating shaft, with its lower part located on the rotation path of the dial plate, and its top abutting against the corresponding reinforcing rib under the action of the elastic reset member. This solution can effectively prevent dust from entering the rotating support part under dusty conditions, ensuring the stable and reliable rotation of the moving parts, and can automatically generate intermittent striking vibration to achieve dust removal, reduce dust adhesion, accumulation and jamming wear, and requires no additional power source, reducing energy consumption and maintenance costs, and improving the long-term stability and reliability of the device.

[0012] Preferably, it further includes: A rotating shaft is rotatably disposed inside the discharge hopper, with one end extending to the outside of the discharge hopper; Multiple stirring rods are fixedly arranged at intervals on the rotating shaft and located inside the discharge hopper; The transmission assembly is located on the outside of the housing; The second end of the first rotating shaft extends to the outside of the housing, and the transmission assembly is connected between the second end of the first rotating shaft and the end of the rotating shaft extending out of the hopper. With this solution, the ash accumulated in the hopper can be stirred and dispersed, so that knocking to clean the ash and stirring to discharge the ash can be carried out in conjunction, thus eliminating the need for an additional power source such as a motor. This helps to reduce ash accumulation, blockage and jamming in the hopper, and improves the stability and reliability of long-term operation.

[0013] Preferably, the transmission assembly includes: A one-way bearing is fitted onto the second end of the first rotating shaft; The first sprocket is mounted on the second end of the first shaft via the one-way bearing; The second sprocket is fitted onto one end of the rotating shaft that extends out of the discharge hopper; The chain meshes with the first sprocket and the second sprocket respectively. This solution can automatically convert reciprocating oscillation into unidirectional intermittent rotation, avoid reverse motion from interfering with ash discharge, and stably transmit power to the ash mixing component in the discharge hopper, so that the accumulated ash is directionally and intermittently agitated and dispersed. At the same time, it reduces the impact of dust on power transmission, eliminates the need for an additional power source, reduces energy consumption and maintenance costs, and improves the smoothness of ash discharge and the stability and reliability of long-term operation.

[0014] Preferably, it further includes: The reinforcing frame is fixedly installed on the outside of the box body; In this design, one end of the rotating shaft that extends out of the discharge hopper passes through the reinforcing frame and is rotatably connected to the reinforcing frame. This design provides additional support for the extended end of the rotating shaft, thereby improving the rigidity and coaxiality of the rotating shaft, reducing vibration and bending, ensuring smooth chain drive, extending service life, and improving the long-term operational stability of the device.

[0015] Preferably, the lower part of the striking rod has a groove, and multiple guide wheels are rotatably arranged in the groove. The multiple guide wheels are arranged at intervals along the length direction of the striking rod, and the guide wheels at least partially protrude outside the groove and are located on the rotation path of the dial plate. By adopting this solution, the sliding friction between the dial plate and the striking rod is transformed into rolling contact, thereby reducing friction, jamming and wear, and improving the reliability and service life of the dial.

[0016] Preferably, a striking block is provided on the side of the striking rod facing the reinforcing rib at the top; by adopting this solution, the striking force can be concentrated and accurately applied to the reinforcing rib, thereby improving the dust removal effect of striking, while avoiding direct wear on the top of the striking rod and extending its service life.

[0017] Preferably, the elastic reset element is a spiral spring; this solution provides stable driving, a simple structure, and is easy to install and maintain.

[0018] Through the above technical solution, the present invention achieves the following beneficial effects: 1. This application, by setting an expansion cylinder and a rotatable diversion component between the air inlet pipe and the circular opening, allows the concentrated dust-laden airflow to first undergo expansion and deceleration, and then be distributed to each air duct via a hollow rotating shaft and ejected by the nozzles. The airflow ejected from the nozzles has a tangential component around the axis of the hollow rotating shaft and an upward component along the axis of the hollow rotating shaft. The jet reaction force generated by the tangential component drives the hollow rotating shaft to rotate, and the upward component forms a rotating upward airflow below the circular opening, thereby dispersing and uniformly distributing the dust-laden gas in multiple stages, so that the airflow enters each filter bag more evenly, avoiding local high-speed scouring and uneven filtration load. At the same time, the expansion and deceleration, rotational centrifugal force, and gravity cause large dust particles to settle in advance, reducing the impact and wear of large dust particles on the filter bags, thereby improving the utilization rate and service life of the filter bag filtration area. Furthermore, the rotary jet cleaning does not require additional drive, has a simple structure, and is stable in operation. 2. This application connects the far ends of each air duct through an annular seat, which improves the rigidity and dynamic balance of the rotating parts; at the same time, the lever plate on the outer periphery of the annular seat rotates synchronously with the hollow shaft to intermittently actuate the striking component, so that the striking component knocks and cleans the reinforcing ribs. In this way, the mechanical energy of the hollow shaft driven by the backflow of the blower head is used to achieve knocking and cleaning, without the need for an additional power source such as a motor. This can reduce the adhesion and accumulation of dust at the bottom of the partition plate and the reinforcing ribs, and improve the long-term operational stability of the device. 3. The movement of the first rotating shaft in this application can be transmitted to the rotating shaft through the transmission component, thereby driving the ash stirring rod to stir and disperse the ash in the discharge hopper. This allows the knocking and ash cleaning and ash stirring and discharge to be carried out in conjunction, without the need for an additional power source such as a motor, which helps to reduce ash accumulation, blockage and jamming in the discharge hopper. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the air inlet device of the bag filter according to the embodiments of this application; Figure 2 for Figure 1 A partial sectional perspective view of the air inlet device of the bag filter shown. Figure 3 for Figure 1The diagram shows the internal structure of the air inlet device of the bag filter. Figure 4 for Figure 3 Schematic diagram of the middle partition plate; Figure 5 for Figure 3 A structural diagram of the expansion cylinder and diversion assembly, etc. Figure 6 for Figure 3 A structural diagram of the central rotating shaft and striking components; Figure 7 for Figure 3 A schematic diagram of the internal structure of the middle striking component; Figure 8 for Figure 7 Enlarged view of point A in the middle; Explanation of reference numerals in the attached figures: 10. Housing; 20. Discharge hopper; 30. Divider plate; 40. Air outlet; 50. Expansion cylinder; 60. Air inlet pipe; 70. Diversion assembly; 80. Reinforcing rib; 90. Annular seat; 100. Paddle plate; 110. Striking assembly; 120. Rotating shaft; 130. Ash stirring rod; 140. Transmission assembly; 150. Reinforcing frame; 160. Guide wheel; 170. Striking block; 180. Discharge pipe; 190. Discharge valve; 200. Support frame; 11. Upper chamber; 12. Lower chamber; 13. Upper cover plate; 14. Support leg; 15. Enclosure plate; 31. Round opening; 71. Rotary joint; 72. Hollow rotating shaft; 73. Air duct; 74. Air nozzle; 111. Housing; 112. First rotating shaft; 113. Elastic reset component; 114. Striking rod; 1141. Groove; 141. One-way bearing; 142. First sprocket; 143. Second sprocket; 144. Chain. Detailed Implementation

[0021] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0022] The terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as “first” or “second” may explicitly or implicitly include one or more of the stated features.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0025] Example: like Figure 1 and Figure 2 As shown in the figure, this application discloses an air intake device for a bag filter dust collector, which is used to decelerate, disperse and pre-separate large dust particles in the dust-laden gas before it enters the filter bag filtration area, and to make the dust-laden gas pass through the filter bag more uniformly. Specifically, it includes: a housing 10, a discharge hopper 20, a partition plate 30, an air outlet 40, an expansion cylinder 50, an air inlet pipe 60 and a diversion component 70.

[0026] The housing 10 serves as the mounting base for the air intake device, and it is securely supported by multiple legs 14 evenly distributed around its outer perimeter. Preferably, the housing 10 adopts a vertical cylindrical structure to create air intake, diversion, and filtration spaces distributed around a vertical central area within it.

[0027] The discharge hopper 20 is located at the bottom of the housing 10 and communicates with the interior of the housing 10. It gradually tapers downwards and is used to collect the dust that falls after pre-separation. Optionally, a discharge pipe 180 may be provided at the bottom of the discharge hopper 20, and a discharge valve 190 may be provided on the discharge pipe 180 to facilitate centralized ash discharge.

[0028] The partition plate 30 is disposed inside the housing 10 and divides the interior of the housing 10 into an upper chamber 11 located above the partition plate 30 and a lower chamber 12 located below the partition plate 30. The partition plate 30 has a circular opening 31 that connects the upper chamber 11 and the lower chamber 12. The circular opening 31 is used to provide a channel for the dust-laden airflow after the pre-separation of the peripheral particles to continue to flow upward, so that larger dust particles moving to the periphery are blocked by the partition plate 30, while the remaining airflow can enter the upper chamber 11 where the filter bag is located through the circular opening 31.

[0029] The air outlet 40 is located on the upper outer side of the housing 10 and is connected to the upper chamber 11, and is used to discharge the purified gas filtered by the filter bag from the housing 10.

[0030] The expansion cylinder 50 is vertically arranged within the lower chamber 12 and located below the circular opening 31. The effective flow cross-sectional area of ​​the expansion cylinder 50 is larger than that of the inlet duct 60, allowing the dust-laden airflow entering through the inlet duct 60 to have a larger flow space before entering the subsequent diversion assembly 70. This allows the dust-laden airflow to diffuse and slow down first, thereby reducing the direct erosion of the diversion assembly 70 by high-speed dust particles. The expansion cylinder 50 is preferably coaxially arranged with the circular opening 31, so that the dust-laden gas is evenly distributed along the circumference of the circular opening 31, thereby reducing airflow deviation and local high-speed scouring, and also facilitating the centrifugal pre-separation of large dust particles.

[0031] For example, such as Figure 2 and Figure 3 As shown, a support frame 200 is fixedly installed inside the lower chamber 12, and an expansion cylinder 50 is fixedly installed on the support frame 200, thereby providing stable support for the expansion cylinder 50 and improving the installation stability and structural strength of the expansion cylinder 50. The output end of the air inlet pipe 60 is sealed from the lower outer side of the housing 10 into the lower chamber 12 and connected to the bottom end of the expansion cylinder 50. After the dust-laden gas enters the expansion cylinder 50 through the air inlet pipe 60, the airflow velocity decreases due to the expansion of the flow cross section, which is conducive to the initial settling of larger dust particles.

[0032] The diversion component 70 is disposed in the lower chamber 12 and corresponds vertically to the circular opening 31; it is used to disperse and distribute the dust-laden gas entering the lower chamber 12.

[0033] like Figure 3 As shown, the diversion assembly 70 includes: a rotary joint 71, a hollow rotating shaft 72, multiple air supply pipes 73, and multiple air nozzles 74.

[0034] Rotary joint 71 is located at the top of expansion cylinder 50 to realize the rotational connection between hollow rotating shaft 72 and expansion cylinder 50, while keeping the inner cavities of the two connected.

[0035] The hollow rotating shaft 72 forms an axially extending airflow channel inside. Its top end is closed, and its bottom end is coaxially rotatably connected to the top end of the expansion cylinder 50 through a rotary joint 71. The inner cavity is connected to the inner cavity of the expansion cylinder 50. This allows the dust-laden airflow inside the expansion cylinder 50 to enter the hollow rotating shaft 72 while keeping the hollow rotating shaft 72 rotating relative to the expansion cylinder 50.

[0036] Multiple air ducts 73 are spaced circumferentially on the outer wall of the hollow rotating shaft 72 and extend outward from the hollow rotating shaft 72. The end of each air duct 73 near the hollow rotating shaft 72 communicates with the inner cavity of the hollow rotating shaft 72, while the end away from the hollow rotating shaft 72 is closed. Thus, dust-laden gas inside the hollow rotating shaft 72 can be distributed to each air duct 73. Preferably, these multiple air ducts 73 extend uniformly circumferentially and radially outward, with a relatively symmetrical mass distribution of their rotating components, resulting in better dynamic balance and reduced vibration.

[0037] Each air duct 73 is provided with multiple nozzles 74 at an angle, and the nozzles 74 are connected to the air duct 73. The nozzle direction of the nozzles 74 is configured to have a tangential component around the axis of the hollow rotating shaft 72 and an upward component along the axis of the hollow rotating shaft 72. The jet reaction force generated by the tangential component can drive the hollow rotating shaft 72 to rotate around its own axis. The upward component can form a rotating upward airflow below the circular opening 31, thereby dispersing and uniformly distributing the dust-laden gas.

[0038] It should be noted that the tangential components of the multiple nozzles 74 are preferably oriented in the same direction of rotation, so that when the dust-laden airflow is ejected from the multiple nozzles 74, it generates a reaction torque in the same direction to drive the hollow rotating shaft 72, the air duct 73 and the components connected thereto to rotate synchronously.

[0039] Understandably, since the nozzle 74 is a highly worn component that is in constant contact with dusty airflow, it is preferable that the nozzle 74 be installed on the air duct 73 via a threaded connection or a detachable joint and be made of wear-resistant alloy material. Alternatively, a replaceable wear-resistant liner can be installed inside the nozzle 74. The rotary joint 71 can be a commercially available hollow rotary joint, with bearings and wear-resistant seals preferably installed at the relative moving positions inside. The bearings are periodically lubricated with grease to reduce the possibility of dust entering the rotation gap and causing jamming and wear. As an alternative, provided that rotational communication between the hollow rotating shaft 72 and the expansion cylinder 50 can be ensured, a rotary sealing connection structure can be formed by combining a fixed sleeve, a rotating sleeve, bearings, and multi-stage seals.

[0040] This invention allows the concentrated dust-laden airflow to first undergo expansion and deceleration, and then form a rotating upward airflow below the circular opening 31. This multi-stage dispersion and uniform distribution of the dust-laden gas ensures that the airflow enters the filter bag more evenly, avoiding local high-speed scouring and uneven filtration load. At the same time, the expansion and deceleration, rotational centrifugal force, and gravity cause large dust particles to settle in advance, reducing the impact and wear of large dust particles on the filter bag, thereby improving the utilization rate and service life of the filter bag filtration area. Furthermore, the rotary jet cleaning does not require additional drive, has a simple structure, and operates stably.

[0041] For example, such as Figure 1As shown, the top of the housing 10 has a removable top cover 13, which closes the opening at the top of the housing 10 and, together with the housing 10, forms the upper chamber 11. The top cover 13 and the housing 10 are connected by a detachable connection structure such as bolts or clips, and a seal can be installed at the connection point to ensure the airtightness of the upper chamber 11. A handle can be provided on the top cover 13 for easy disassembly and assembly. By providing the top cover 13, it is easy to open the top of the housing 10, thereby facilitating the installation, inspection, replacement, and cleaning of the filter bags inside the upper chamber 11; at the same time, the detachable connection structure and seal can reduce maintenance difficulty and downtime while ensuring the airtightness of the upper chamber 11.

[0042] For example, such as Figure 1 As shown, a detachable sealing plate 15 is provided on the side of the housing 10. The sealing plate 15 is used to close the side opening of the housing 10 and is detachably connected to the housing 10, for example, by bolts. A through hole is provided on the sealing plate 15 for the air inlet pipe 60 to pass through. The output end of the air inlet pipe 60 passes through the sealing plate 15 and is sealed into the lower chamber 12, communicating with the bottom end of the expansion cylinder 50. A sealing ring or other sealing structure can be provided between the air inlet pipe 60 and the sealing plate 15 to ensure airtightness at the penetration point. This facilitates the installation, connection, maintenance, and replacement of the air inlet pipe 60 and the expansion cylinder 50.

[0043] In some embodiments, such as Figure 3 and Figure 4 As shown, the air intake device also includes a plurality of reinforcing ribs 80, which are arranged at intervals along the circumference of the partition plate 30, and each reinforcing rib 80 is fixedly connected between the outer periphery of the bottom surface of the partition plate 30 and the inner wall of the housing 10.

[0044] The above design strengthens the connection between the partition plate 30 and the housing 10, improves the rigidity and deformation resistance of the partition plate 30, and reduces the vibration and deformation of the partition plate 30 under airflow impact and filter bag load.

[0045] Based on the above embodiments, such as Figure 2 , Figure 3 and Figure 5 As shown, the air intake device also includes: an annular seat 90, multiple paddles 100, and a striking assembly 110.

[0046] The annular seat 90 is coaxially arranged with the hollow rotating shaft 72, and the ends of the multiple air ducts 73 away from the hollow rotating shaft 72 are all fixedly connected to the inner side wall of the annular seat 90; thus, the hollow rotating shaft 72, the multiple air ducts 73 and the annular seat 90 form a synchronous rotating integral structure, which improves the overall rigidity and dynamic balance of the rotating parts, and makes the rotation of each air duct 73 more stable when the hollow rotating shaft 72 drives it.

[0047] Multiple levers 100 are spaced apart along the circumference of the annular seat 90 on the outer periphery of the annular seat 90. The number of levers 100 is preferably four, and they are evenly spaced. They can also be made of wear-resistant steel and installed on the annular seat 90 by detachable connection methods such as bolts, so that they can be replaced individually after wear during long-term operation.

[0048] The striking component 110 is disposed within the lower chamber 12 and located below the reinforcing rib 80, with the striking end of the striking component 110 corresponding to one reinforcing rib 80; multiple striking components 110 can be configured, each corresponding to one reinforcing rib 80. By striking the reinforcing rib 80 instead of directly and continuously striking the partition plate 30, the impact can be transmitted to the partition plate 30 through the reinforcing rib 80, thereby reducing the possibility of deformation and fatigue damage to the partition plate 30 due to long-term local impact.

[0049] The above design improves the rigidity and dynamic balance of the rotating components, enables the hammering and dust removal of the reinforcing rib 80, reduces dust adhesion and accumulation at the bottom of the partition plate 30 and the reinforcing rib 80, and eliminates the need for additional power sources such as motors, thereby simplifying the structure, reducing energy consumption and maintenance, and improving operational stability.

[0050] In this embodiment, as Figures 6 to 8 As shown, the striking assembly 110 includes: a housing 111, a first rotating shaft 112, an elastic reset member 113, and a striking rod 114.

[0051] The housing 111 is fixedly installed in the lower chamber 12, preferably near the inner wall of the box 10. It adopts a relatively closed shell structure to reduce the direct entry of dust-laden airflow into its interior.

[0052] The first rotating shaft 112 is horizontally rotatably disposed inside the housing 111, with its first end extending outside the housing 111. The relative rotational position of the first rotating shaft 112 and the housing 111 can be supported by a bushing or bearing. A sealing ring or labyrinth seal structure is provided at the position where the first rotating shaft 112 passes through the housing 111 to reduce dust from entering the rotational support position and ensure rotational stability.

[0053] An elastic reset member 113 is disposed inside the housing 111 and connected between the housing 111 and the first rotating shaft 112, for resetting the first rotating shaft 112. When the first rotating shaft 112 rotates under the action of an external force, the elastic reset member 113 undergoes elastic deformation and stores elastic potential energy; when the external force disappears, the elastic reset member 113 releases the elastic potential energy and drives the first rotating shaft 112 to rotate in the opposite direction to reset.

[0054] The striking rod 114 is fixedly mounted on the first end of the first rotating shaft 112, so that the striking rod 114 can swing at a small angle synchronously with the first rotating shaft 112; the lower part of the first rotating shaft 112 is located on the rotation path of the dial plate 100, and the top part abuts against the corresponding reinforcing rib 80 under the action of the elastic reset member 113; when the striking rod 114 is not subjected to the action of the dial plate 100, it is kept in a basically vertical initial state by the elastic reset member 113.

[0055] It should be noted that the vertical state refers to the striking rod 114 being in a stable initial position that allows its top to effectively strike the reinforcing rib 80. It does not require that there be no installation angle error between the striking rod 114 and the vertical direction. The housing 111 may also be provided with a limiting structure corresponding to the first rotating shaft 112 or the striking rod 114 to limit the maximum swing angle of the striking rod 114 when it is pushed by the push plate 100, and to prevent the elastic reset member 113 from deforming beyond its elastic working range.

[0056] The above design effectively prevents dust from entering the rotating support parts under dusty conditions, ensuring stable and reliable rotation of moving parts. It can also automatically generate intermittent knocking vibrations to clean dust, reduce dust adhesion, accumulation, and jamming wear, and requires no additional power source, thus reducing energy consumption and maintenance costs and improving the long-term stability and reliability of the device.

[0057] In this embodiment, as Figure 3 and Figure 6 As shown, the air intake device also includes a rotating shaft 120, multiple stirring rods 130, and a transmission assembly 140.

[0058] The rotating shaft 120 is rotatably disposed inside the discharge hopper 20, serving as a mounting carrier for the agitator rod 130, with one end extending to the outside of the discharge hopper 20 to receive power transmitted by the transmission assembly 140. A wear-resistant bushing and a sealing ring are preferably provided at the position where the rotating shaft 120 passes through the side wall of the discharge hopper 20 to reduce the leakage of dust from inside the discharge hopper 20 along the rotational gap.

[0059] Multiple agitator rods 130 are fixedly arranged at intervals on the rotating shaft 120 and located inside the discharge hopper 20. Preferably, the agitator rods 130 extend outwards along the radial direction of the rotating shaft 120 and can be arranged at staggered angles to agitate the dust in different areas inside the discharge hopper 20 when the rotating shaft 120 rotates. This disrupts the stable support structure formed between dust particles, reducing bridging or blockage of dust in the discharge hopper 20, especially in the area near the discharge pipe 180. The agitator rods 130 can be round rods, flat rods, or rod-shaped structures with a certain bending angle, and are preferably detachably connected to the rotating shaft 120 to allow for individual replacement of agitator rods 130 that have been subjected to long-term dust friction.

[0060] The transmission assembly 140 is located on the outside of the housing 10 and is used to transmit the rotation of the first rotating shaft 112 to the rotating shaft 120, thereby driving the rotating shaft 120 and the dust stirring rod 130 to move. Since the transmission assembly 140 is located on the outside of the housing 10, the influence of dust on the transmission components can be reduced and the transmission reliability can be improved.

[0061] The second end of the first rotating shaft 112 extends to the outside of the housing 10, and the transmission assembly 140 is connected between the second end of the first rotating shaft 112 and the end of the rotating shaft 120 that extends out of the discharge hopper 20.

[0062] Through the above design, the movement of the first rotating shaft 112 can be transmitted to the rotating shaft 120 via the transmission component 140, thereby driving the ash stirring rod 130 to stir and disperse the ash accumulated in the discharge hopper 20. This allows the knocking and ash cleaning and ash stirring and discharge to be carried out in conjunction, thus eliminating the need for an additional power source such as a motor. This helps to reduce ash accumulation, blockage and jamming in the discharge hopper 20, and improves the stability and reliability of long-term operation.

[0063] In this embodiment, as Figure 3 , Figures 6 to 8 As shown, the transmission assembly 140 includes: a one-way bearing 141, a first sprocket 142, a second sprocket 143, and a chain 144.

[0064] A one-way bearing 141 is fitted onto the second end of the first rotating shaft 112; it is used to realize one-way transmission between the first rotating shaft 112 and the first sprocket 142. The first sprocket 142 is mounted on the second end of the first rotating shaft 112 via the one-way bearing 141, and is used to rotate synchronously with the first rotating shaft 112 when the one-way bearing 141 is locked, and to output power to the second sprocket 143 via the chain 144. The second sprocket 143 is fitted onto one end of the rotating shaft 120 that extends out of the discharge hopper 20; it is used to receive the power transmitted by the chain 144 and drive the rotating shaft 120 to rotate. The chain 144 meshes with both the first sprocket 142 and the second sprocket 143; it is used to transmit motion and torque between the first sprocket 142 and the second sprocket 143.

[0065] It should be noted that the locking direction of the one-way bearing 141 is not arbitrarily set, but is determined according to the actual power conditions of the striking assembly 110. When the deflector 100 rotates with the annular seat 90 and pushes the lower part of the striking rod 114, the first rotating shaft 112 rotates in the first direction under the external mechanical driving force provided by the deflector 100. At this time, the one-way bearing 141 is in a locked state, so that the first rotating shaft 112 can drive the first sprocket 142 to rotate through the one-way bearing 141. The first sprocket 142 further drives the second sprocket 143 and the rotating shaft 120 to rotate through the chain 144, thereby causing the stirring rod 130 to stir the dust inside the discharge hopper 20. When the deflector 100 disengages from the striking rod 114, the first rotating shaft 112 mainly relies on the elastic reset member 11. 3. The released elastic potential energy is reset in the opposite direction. At this time, the one-way bearing 141 is in an overrunning state. The first rotating shaft 112 will not drive the first sprocket 142, chain 144, second sprocket 143, rotating shaft 120 and ash stirring rod 130 to move in the opposite direction. Thus, the ash stirring mechanism obtains power only during the stroke in which the deflector plate 100 provides a large external driving force. When the elastic reset member 113 drives the first rotating shaft 112 to reset, the additional load formed by the sprocket chain and ash stirring mechanism on the first rotating shaft 112 is released. This avoids the resistance generated by the rotating shaft 120, ash stirring rod 130 and dust inside the discharge hopper 20 from consuming the elastic potential energy of the elastic reset member 113. Thus, the energy released by the elastic reset member 113 can be mainly used to drive the striking rod 114 to reset quickly and complete the effective striking.

[0066] More preferably, the first sprocket 142, the second sprocket 143, and the chain 144 are all arranged outside the housing 10 and the discharge hopper 20, and a detachable protective cover can be installed on the outside of the sprockets and chain to reduce dust and foreign objects from entering the chain drive area and reduce the risk of personnel accidentally touching moving parts; as an alternative, if the first direction of transmission can be achieved and the reset direction of transmission can be released, a synchronous belt drive structure with a one-way clutch mechanism or a ratchet and pawl intermittent transmission structure can also be used.

[0067] More specifically, a chain tensioner can be provided on one side of the chain 144 to compensate for the elongation and slack of the chain 144 caused by long-term use, and reduce the possibility of the chain 144 skipping teeth or falling off.

[0068] Through the above design, the reciprocating oscillation can be automatically converted into unidirectional intermittent rotation, avoiding reverse motion from interfering with ash discharge, and the power can be stably transmitted to the ash mixing component in the discharge hopper 20, so that the accumulated ash is directionally and intermittently agitated and dispersed; at the same time, the impact of dust on power transmission is reduced, no additional power source is required, energy consumption and maintenance costs are reduced, and the smoothness of ash discharge and the stability and reliability of long-term operation are improved.

[0069] In this embodiment, as Figure 3 , Figure 6 and Figure 7 As shown, the air intake device also includes a reinforcing bracket 150, which is fixedly mounted on the outside of the housing 10, preferably by bolts, and extends toward the rotating shaft 120.

[0070] One end of the rotating shaft 120 that extends out of the discharge hopper 20 passes through the reinforcing frame 150 and is rotatably connected to the reinforcing frame 150. This allows the rotating shaft 120 to obtain additional rotational support when it extends outward from the side wall of the discharge hopper 20 to the location of the second sprocket 143, reducing the possibility of a large bending moment in the extended part of the rotating shaft 120 after the second sprocket 143 is subjected to the tension of the chain 144.

[0071] More preferably, a bearing seat with a sealing structure is provided between the reinforcing frame 150 and the rotating shaft 120, and the bearing seat is provided with a lubrication position for periodic maintenance; and the use of bolts to detachably install the reinforcing frame 150 can facilitate the installation and calibration of the reinforcing frame 150 according to the specific positions of the first sprocket 142 and the second sprocket 143, so that the first sprocket 142 and the second sprocket 143 are basically kept in the same transmission plane, thereby reducing the possibility of skewed wear or chain derailment during the operation of the chain 144.

[0072] The above design provides additional support for the extended end of the rotating shaft 120, thereby improving the rigidity and coaxiality of the rotating shaft 120, reducing vibration and bending, ensuring smooth chain drive, extending service life, and improving the long-term operational stability of the device.

[0073] In this embodiment, as Figure 8 As shown, a groove 1141 is provided at the lower part of the striking rod 114, and a plurality of guide wheels 160 are rotatably arranged in the groove 1141. The plurality of guide wheels 160 are arranged at intervals along the length direction of the striking rod 114, and the guide wheels 160 at least partially protrude outside the groove 1141 and are located on the rotation path of the dial plate 100; so that when the dial plate 100 pushes the striking rod 114, it can first make rolling contact with the guide wheels 160.

[0074] More preferably, the rotational connection position of the guide wheel 160 can be equipped with a self-lubricating bushing or a closed lubrication structure to reduce the possibility of increased rotational resistance of the guide wheel 160 due to the adsorption of a large amount of dust at the lubrication position in a dusty environment; the guide wheel 160 can be installed in the groove 1141 by means of a pin and a detachable limiting component to facilitate quick replacement after wear. Through the above design, the sliding friction between the lever 100 and the striking rod 114 is transformed into rolling contact, thereby reducing friction, jamming and wear, and improving the reliability and service life of the lever.

[0075] In this embodiment, as Figure 8As shown, a striking block 170 is provided on the side of the top of the striking rod 114 facing the reinforcing rib 80; when the striking rod 114 is driven to quickly reset by the elastic reset member 113, the striking block 170 first contacts the reinforcing rib 80, so that the instantaneous force generated by the striking is transmitted to the partition plate 30 through the reinforcing rib 80, so that the partition plate 30 vibrates and causes the dust attached to its surface to fall off.

[0076] More specifically, the striking block 170 can be made of impact-resistant engineering plastic, polyurethane elastic material, or wear-resistant metal material with a buffer layer, and is preferably detachably installed on the striking rod 114 by means of threaded parts or embedded structure, so as to reduce local deformation, noise and fatigue damage caused by long-term direct hard collision between the striking rod 114 and the reinforcing rib 80 while ensuring that the striking vibration can be effectively transmitted. The protruding size of the striking block 170 can be selected according to the assembly position between the striking rod 114 and the reinforcing rib 80, so as to ensure that the striking rod 114 can form an effective strike when it is reset and will not be excessively rigid and stuck.

[0077] The above design allows the striking force to be concentrated and accurately applied to the reinforcing rib 80, thereby improving the dust removal effect and avoiding direct wear on the top of the striking rod 114, thus extending its service life.

[0078] For example, the elastic reset element 113 is a spiral spring, which is commercially available. Those skilled in the art can install and operate it simply by following the accompanying instruction manual, without requiring any creative effort from those skilled in the art.

[0079] The working process of the above technical solution is as follows: During operation, the dust-laden airflow first enters the expansion cylinder 50 through the inlet duct 60. Since the effective flow cross-sectional area of ​​the expansion cylinder 50 is larger than that of the inlet duct 60, the dust-laden airflow gains greater flow space and its average velocity decreases after entering the expansion cylinder 50. The decelerated dust-laden airflow then enters the hollow rotating shaft 72 through the rotary joint 71, and then enters multiple air delivery ducts 73 arranged circumferentially along the hollow rotating shaft 72, and is ejected by multiple nozzles 74. Because the spray direction of the multiple nozzles 74 all has a tangential component arranged along the same circumferential direction, the reaction torque generated by the ejected airflow drives the hollow rotating shaft 72 and the air delivery ducts 73 in the same direction. The air jets rotate in a circular motion, causing multiple nozzles 74 to continuously change their actual jet positions and disperse the dust-laden airflow in multiple directions. Simultaneously, a certain rotational motion is formed inside the lower chamber 12 of the housing 10. Larger dust particles in the airflow, due to their relatively large inertia, tend to move towards the periphery and come into contact with the partition plate 30. After impacting the partition plate 30, the dust particles slow down and fall into the discharge hopper 20 under their own gravity. The remaining dust-laden airflow after pre-separation enters the upper chamber 11 through the circular opening 31 on the partition plate 30 and is further filtered by the dust collector bag. The filtered gas is discharged through the outlet 40. Simultaneously, the annular seat 90, driven by multiple air ducts 73, generates a continuous rotational motion. Each deflector 100 rotates with the annular seat 90 and intermittently contacts the striking assembly 110 during rotation, driving the striking assembly 110 to strike the reinforcing rib 80. It utilizes the dust-laden airflow as the mechanical power source for the striking assembly 110, eliminating the need for a separate motor or other striking drive source.

[0080] Specifically, when the lever 100 rotates with the annular seat 90, it contacts the lower part of the striking rod 114 along its rotation path, causing the striking rod 114 to rotate around the first rotating shaft 112. At this time, the top of the striking rod 114 gradually disengages from the reinforcing rib 80, and the elastic reset member 113 undergoes elastic deformation and stores elastic potential energy. When the lever 100 continues to rotate and disengages from the lower part of the striking rod 114, the elastic reset member 113 releases its elastic potential energy, driving the first rotating shaft 112 to rotate in the opposite direction and reset. The striking rod 114 then rotates in the opposite direction, and its top strikes the reinforcing rib 80.

[0081] During this actuation stroke, the one-way bearing 141 is locked. The first rotating shaft 112 drives the first sprocket 142 to rotate via the one-way bearing 141. The first sprocket 142 drives the second sprocket 143 and the rotating shaft 120 to rotate at a certain angle via the chain 144, causing the multiple dust-stirring rods 130 to simultaneously agitate the dust inside the discharge hopper 20. When the actuating plate 100 continues to rotate with the annular seat 90 and disengages from the striking rod 114, the elastic reset member 113 releases its elastic potential energy and drives the first rotating shaft 112 and the striking rod 114 to quickly reverse and reset. At this time, the one-way bearing 141 is in an overrunning state, preventing the first sprocket 142, chain 144, second sprocket 143, rotating shaft 120, and dust-stirring rods 130 from moving in the opposite direction with the first rotating shaft 112, thereby reducing the reset resistance of the elastic reset member 113 and causing the striking block 170 to quickly impact the reinforcing rib 80. The vibration generated by the knocking is transmitted to the partition plate 30 through the reinforcing rib 80, which promotes the removal of the dust adhering to the partition plate 30. As the annular seat 90 continues to rotate and multiple levers 100 pass by the knocking rod 114 in sequence, the partition plate 30 will be periodically knocked and cleaned. At the same time, the rotating shaft 120 and the dust stirring rod 130 gradually change position in an intermittent unidirectional manner and continuously disturb the dust inside the discharge hopper 20, thereby destroying the bridging structure formed by the dust and avoiding blockage.

[0082] Finally, when it is necessary to discharge the collected dust, the discharge valve 190 can be opened to allow the dust inside the discharge hopper 20 to be discharged outward through the discharge pipe 180.

[0083] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. An air inlet device for a bag filter dust collector, characterized in that, include: Box; The discharge hopper is located at the bottom of the box and communicates with the interior of the box; A partition plate is disposed inside the box body, dividing the box body into an upper chamber located above the partition plate and a lower chamber located below the partition plate. A circular opening is provided on the partition plate, and the circular opening connects the upper chamber and the lower chamber. An air outlet is located on the upper outer side of the housing and communicates with the upper chamber. An expansion cylinder is vertically arranged within the lower chamber; The air inlet pipe has its output end sealed and inserted into the lower cavity from the lower outer side of the box body, and is connected to the bottom end of the expansion cylinder; The diversion component is disposed in the lower cavity and corresponds vertically to the circular opening; The splitter component includes: A rotary joint is located at the top of the expansion cylinder; A hollow rotating shaft, with its top end closed, and its bottom end coaxially rotatably connected to the top end of the expansion cylinder via the rotary joint, and its inner cavity communicating with the inner cavity of the expansion cylinder; Multiple air supply pipes are spaced apart circumferentially on the outer wall of the hollow rotating shaft and extend outward from the hollow rotating shaft; and the end of the air supply pipe near the hollow rotating shaft is connected to the inner cavity of the hollow rotating shaft, while the end away from the hollow rotating shaft is closed. Multiple nozzles are provided, with each of the air supply pipes having multiple nozzles obliquely arranged on it, and the nozzles being connected to the air supply pipes; the nozzle direction of each nozzle is configured to have a tangential component about the axis of the hollow rotating shaft and an upward component along the axis of the hollow rotating shaft, so as to drive the hollow rotating shaft to rotate through the jet reaction force generated by the tangential component, and to form a rotating upward airflow below the circular opening through the upward component.

2. The air inlet device for a bag filter according to claim 1, characterized in that, Also includes: Multiple reinforcing ribs are arranged at intervals along the circumference of the partition plate, and each reinforcing rib is fixedly connected between the outer periphery of the bottom surface of the partition plate and the inner wall of the box body.

3. The air inlet device for a bag filter according to claim 2, characterized in that, Also includes: The annular seat is coaxially arranged with the hollow rotating shaft, and the ends of the plurality of air supply pipes away from the hollow rotating shaft are all fixedly connected to the inner sidewall of the annular seat. Multiple levers are spaced apart on the outer periphery of the annular seat along the circumference of the annular seat; A striking component is disposed in the lower cavity and located below the reinforcing rib, and the striking end of the striking component is correspondingly disposed to one of the reinforcing ribs; Each of the paddles rotates with the annular seat and intermittently contacts the striking component during rotation to drive the striking component to strike the reinforcing rib.

4. The air inlet device for a bag filter according to claim 3, characterized in that, The striking component includes: The housing is fixedly installed within the lower cavity; The first rotating shaft is horizontally rotatably disposed inside the housing, with its first end extending outside the housing; An elastic reset element is disposed inside the housing and connected between the housing and the first rotating shaft, for resetting the first rotating shaft; The striking rod is fixedly installed at the first end of the first rotating shaft, with its lower part located on the rotation path of the dial plate, and its top part abutting against the corresponding reinforcing rib under the action of the elastic reset member.

5. The air inlet device for a bag filter according to claim 4, characterized in that, Also includes: A rotating shaft is rotatably disposed inside the discharge hopper, with one end extending to the outside of the discharge hopper; Multiple stirring rods are fixedly arranged at intervals on the rotating shaft and located inside the discharge hopper; The transmission assembly is located on the outside of the housing; The second end of the first rotating shaft extends to the outside of the box, and the transmission assembly is connected between the second end of the first rotating shaft and the end of the rotating shaft that extends out of the hopper.

6. The air inlet device for a bag filter according to claim 5, characterized in that, The transmission assembly includes: A one-way bearing is fitted onto the second end of the first rotating shaft; The first sprocket is mounted on the second end of the first shaft via the one-way bearing; The second sprocket is fitted onto one end of the rotating shaft that extends out of the discharge hopper; The chain meshes with the first sprocket and the second sprocket, respectively.

7. The air inlet device for a bag filter according to claim 4, characterized in that, Also includes: The reinforcing frame is fixedly installed on the outside of the box body; The rotating shaft extends from one end of the discharge hopper, passes through the reinforcing frame, and is rotatably connected to the reinforcing frame.

8. The air inlet device for a bag filter according to claim 4, characterized in that, The lower part of the striking rod has a groove, and multiple guide wheels are rotatably arranged in the groove. The multiple guide wheels are arranged at intervals along the length direction of the striking rod, and the guide wheels at least partially protrude outside the groove and are located on the rotation path of the dial.

9. The air inlet device for a bag filter according to claim 4, characterized in that, A striking block is provided on the top of the striking rod facing the reinforcing rib.

10. The air inlet device for a bag filter according to claim 4, characterized in that, The elastic reset component is a spiral spring.

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