Rotary dust collection arm power assembly and dust remover

Abstract

The invention discloses a rotary dust collection arm power assembly and a dust remover, and the rotary dust collection arm power assembly comprises a second driven chain wheel which is installed at the first end of a rotary shaft of a rotary dust collection arm; the third end of the first shaft is provided with an output chain wheel; the power input wheel is mounted at the fourth end of the first shaft; the housing is used for accommodating the power input wheel and the main body of the first shaft and upwards exposing the output chain wheel; the power component is installed below the housing, located outside the corresponding dust removal cavity and provided with an output wheel, an intervention opening is formed in the lower end of the corresponding dust removal cavity, and the output wheel is matched with the power input wheel to form an intervention transmission mechanism; the end, used for exposing the output chain wheel, of the housing is provided with a sealing plate, and a penetrating-out hole used for the first shaft to penetrate out is formed in the sealing plate. According to the rotary dust collection arm power assembly driving motor, the working environment is relatively good, and maintenance is relatively convenient.

Description

Technical Field

[0001] This invention relates to a rotary suction arm power assembly for cleaning filter plates in a dust collector, and also to a dust collector equipped with the rotary suction arm power assembly. Background Technology

[0002] It should be understood that cotton processing enterprises need to carry out dust removal in their workshops to remove impurities and suspended matter such as cotton fibers that are flying in the workshop. Especially after the ginning and delinting process, dust collectors are often installed to draw in the workshop air carrying fine fibers by using airflow generated by fans. However, during the dust removal process, impurities such as fibers can clog the filter cloth of the filter bags, making it difficult to ensure the continuous operation of the equipment. Although bag dust collectors often use pulse bag dust collectors, which can shake off most of the debris on the filter bags, incomplete cleaning of the filter bags will have a significant impact on the filtration effect and cause damage to the filter cloth.

[0003] In view of this, in some implementations, a filter plate (hereinafter referred to as filter plate) with filter cloth or filter screen is also required in the front stage of the bag filter to filter out some relatively large impurities, such as cotton fibers, thereby reducing the burden on the bag filter. The mesh of the filter cloth or filter screen on the filter plate is relatively large, but as impurities such as cotton fibers adhere, the mesh will gradually become clogged. Therefore, there are existing solutions for cleaning the filter plate, mainly by suction arm to suck up the fibers and other impurities attached to the filter plate to ensure the effectiveness of the filter cloth on the filter plate.

[0004] Typically, as in Chinese patent document CN117205685A, a dual-stage fusion pulse dust removal system and dust collector are proposed. This system includes two dust removal chambers of different sizes, designated as a first dust removal chamber and a second dust removal chamber. One side of the first dust removal chamber is attached to one side of the second dust removal chamber, and the attached position is connected. A filter screen is installed at the connection point to perform a first filtration of the impurity-laden airflow entering the second dust removal chamber from the first dust removal chamber. An air inlet is located at the top of the first dust removal chamber, with the air inlet and the filter screen arranged on different surfaces within the first dust removal chamber. An air outlet is located at the top of the second dust removal chamber, with a filter bag installed at the outlet. The airflow passes sequentially from the air inlet through the first dust removal chamber, the filter screen, and the second dust removal chamber, and then undergoes a second filtration through the filter bag at the outlet before being discharged.

[0005] In a dual-stage fusion pulse dust removal system, the filter screen filters out relatively large cotton fiber impurities in the airflow containing impurities. After continuous operation for a period of time, impurities such as cotton fibers attached to the filter screen will affect the filter screen's permeability. To address this, a rotary suction arm is installed in the first dust removal chamber. The suction port of the rotary suction arm faces the filter screen, and the dust discharge port of the rotary suction arm is connected to the separator through a pipe.

[0006] In a dual-stage fusion pulse dust removal system, the main driving method for the recovery suction arm is chain drive, and the drive motor is located between the filter and the second chamber. This location has a narrow space and a large amount of dust, making the working environment of the drive motor relatively harsh and prone to failure. Furthermore, once the drive motor fails, its maintenance is extremely inconvenient due to the narrow installation space and its location inside the dust removal chamber. Summary of the Invention

[0007] The purpose of this invention is to provide a rotary vacuum arm power assembly with a relatively good working environment for the drive motor and relatively convenient maintenance. This invention also provides a dust collector equipped with the rotary vacuum arm power assembly.

[0008] According to a first aspect of the present invention, a rotary vacuum arm power assembly is provided, comprising: The second driven sprocket is installed at the first end of the shaft of the rotary vacuum arm; A first shaft is installed below a second driven sprocket, and an output sprocket is installed at the third end of the first shaft to connect with the second driven sprocket via a chain drive mechanism. The power input wheel is mounted on the fourth end of the first shaft, which is opposite to the third end; A housing for accommodating the main body of the power input wheel and the first shaft, and exposing the output sprocket upwards; and The power unit is installed below the cover and outside the corresponding dust removal chamber, and has an output wheel. The lower end of the corresponding dust removal chamber is provided with an access port. The output wheel cooperates with the power input wheel to form an intervention transmission mechanism. The cover has a sealing plate at one end of the output sprocket, and the sealing plate has a through hole for the first shaft to pass through.

[0009] Optionally, a third shaft is provided, which serves as a mounting base for the second driven sprocket on the shaft; The third shaft is fixedly connected to the rotating shaft, forming an integral shaft or connected by a coupling, and the third shaft is mounted on a given mounting bracket via a third bearing seat; The second end of the rotating shaft, which is opposite to the end where the third shaft is located, is equipped with a connecting pipe for connecting to the vacuuming system.

[0010] Optionally, the mounting frame includes a column that is mounted on the main frame of the dust collector.

[0011] Optionally, a second shaft is provided, which is located between the first shaft and the third shaft, and a second drive sprocket is mounted on the second shaft to form a second chain drive mechanism with the second driven sprocket through a second transmission chain; The second shaft is also equipped with a first driven sprocket that forms a first chain drive mechanism with the output sprocket via a first transmission chain; correspondingly, the output sprocket constitutes a first driving sprocket.

[0012] Optionally, the second shaft is mounted on the adjusting plate via a second bearing housing; The adjusting plate is mounted on a fixed plate via an adjusting structure or adjusting mechanism; The adjustment structure or adjustment mechanism is used to adjust the plate in the vertical direction and in a horizontal direction, where the horizontal direction is the normal direction of the plate.

[0013] Optionally, the through hole is a U-shaped hole or a round hole; If it is a U-shaped hole, the outer contour of a first bearing seat used to provide support for the first shaft mates with the U-shaped hole; If it is a round hole, the round hole and the first shaft are in clearance fit or there is a fit clearance.

[0014] Optionally, the cover includes a cover body mainly composed of an arc-shaped cover head and two parallel side plates. Correspondingly, each of the two side plates is connected to one end of the arc-shaped cover head and extends downward, and the axis of the arc-shaped cover head is located on the lower side of the arc-shaped cover head. The lower end of the side panel has a connecting flange or provides a lower cover plate for sealing the lower end of the cover body; Correspondingly, a secondary intervention port is provided on the lower cover plate, which is aligned with the intervention port.

[0015] Optionally, a housing support frame is provided, which includes a base plate and a base frame connected to the base plate for supporting the housing at a predetermined height; Accordingly, the connecting flange or lower cover plate is fixed to the base frame; The base frame must be enclosed on at least three sides. When three sides are enclosed, the remaining side is the side opposite to the side with the sealing plate.

[0016] According to a second aspect of the present invention, a dust collector is provided, which is a multi-stage dust collector, wherein filter plates are vertically arranged between two adjacent dust collectors, and a rotary suction arm assembly for cleaning the filter plates is adapted to the filter plates. The dust collector also includes the rotary suction arm power assembly described in the first aspect of the present invention, wherein the rotary suction arm power assembly and the suction arm of the rotary suction arm assembly are located on opposite sides of the filter plates.

[0017] Optionally, two adjacent dust collectors form a first dust collector and a second dust collector, with a vertically arranged filter plate serving as the boundary between the first dust collection chamber and the second dust collection chamber; The second dust removal chamber is a downstream dust removal chamber, and the lower part of the second dust removal chamber has a ash hopper and an intermediate bottom shell located at the upper end of the ash hopper and horizontally connected to the first dust collector shell. Accordingly, the power unit is located on the lower side of the intermediate bottom shell, and the intermediate bottom shell has the access port.

[0018] In an embodiment of the invention, the power component of the rotary vacuum arm power assembly, used to drive the rotary vacuum arm, is installed outside the dust removal chamber. This power component outputs power to the rotary vacuum arm via a transmission system. The main body of the transmission system is a chain drive mechanism, suitable for long-distance transmission. A cover is provided near the power component within the transmission system. This cover houses a first shaft, with its fourth end exposed to connect to the rotary vacuum arm's shaft via the chain drive mechanism. The non-exposed end is connected to the power component via an intervening transmission mechanism within the transmission system. The cover's shielding design avoids or reduces the impact of dust and debris on the power component. Furthermore, the power component's location outside the dust removal chamber provides ample operating space, facilitating maintenance and repair. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the right-side structure of a dust collector in one embodiment.

[0020] Figure 2 This is a schematic diagram of the rotary vacuum arm device in one embodiment.

[0021] Figure 3 This is a schematic diagram of the structure of the rotary vacuum arm power assembly extending from the vacuum chamber in one embodiment.

[0022] Figure 4 This is a schematic diagram of the intermediate transition transmission part of the rotary vacuum arm device in one embodiment.

[0023] Figure 5 This is a schematic diagram of the first structure of the protective cover assembly in one embodiment.

[0024] Figure 6 This is a schematic diagram of the second structure of the protective cover assembly in one embodiment.

[0025] In the diagram: 1. Support leg, 2. Ladder, 3. First row of auger, 4. Swing arm assembly, 5. First housing, 6. Air inlet, 7. Air outlet, 8. Filter plate, 9. Second housing, 10. Rotary vacuum arm power unit, 11. Dust hopper, 12. Second row of auger, 13. Drive belt, 14. Drive pulley, 15. Bracket, 16. Connecting pipe, 17. Third bearing seat, 18. Third shaft, 19. Second driven sprocket, 20. Second support frame, 21. Column, 22. Second drive chain, 23. Second drive sprocket, 24. First driven sprocket, 25. Second shaft, 26. First support frame, 27. First drive chain, 28. Protective cover, 29. 30. Driven pulley, 31. First shaft, 32. Power component, 33. First bearing housing, 34. Fixed plate, 35. First mounting plate, 36. Second bearing housing, 37. Adjusting plate, 38. Second adjusting bolt, 39. Second mounting plate, 40. Connecting bolt, 41. Adjusting hole, 42. Third mounting plate, 43. Adjusting hole, 44. Connecting bolt, 45. First adjusting bolt, 46. Adjusting nut, 47. Base plate, 48. Side support plate, 49. Lower cover plate, 50. Fixed hole, 51. Cover body, 52. Cover cavity, 53. First through hole, 54. Second through hole, 55. Dustproof plate, 56. Through shaft hole, 57. End cover. Detailed Implementation

[0026] To facilitate understanding of the present invention, a more detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that the rotary suction arm power assembly according to the embodiments of the present invention is applicable to dust collectors having a rotary suction arm (hereinafter referred to as the suction arm), such as... Figure 1 The rotating arm assembly 4 shown typically has two or more suction arms, which are used for surface cleaning of the filter plate 8 shown in the figure.

[0027] In short, the existing technology is equivalent to placing the power component 32 used to drive the rotating arm assembly 4 inside the dust collector's dust collection chamber, which is a harsh working environment and makes maintenance and repair very difficult once a malfunction occurs.

[0028] In the embodiments of the present invention, the main objective is to place the power unit 32 outside the dust collection chamber of the dust collector in order to improve its working environment, and because it is located outside the dust collection chamber, it will be very advantageous for its maintenance and repair.

[0029] Therefore, it is evident that the main objective of this invention is to enable the rotary suction arm to be driven even when the power unit 32 is located outside the dust collection chamber, thereby improving the working environment of the power unit 32 and enhancing its maintainability and ease of maintenance. For the remaining parts of the dust collector that are unrelated to this main objective, existing technologies can be used, including the power unit 32 itself. Clearly, this invention does not propose improvements to it, but merely adjusts its installation position. Therefore, any power unit 32 suitable for driving the rotary suction arm can be used, and the improved working environment will provide even more options.

[0030] As a related explanation, firstly, for the rotary vacuum arm power assembly, the filter plate 8 it cleans is usually vertically arranged. Therefore, the rotating surface of the rotary vacuum arm is usually a vertical surface. Obviously, the axis of its rotating shaft (hereinafter referred to as the shaft) must be horizontal. The horizontal shaft can be driven by other power shafts or transmission shafts arranged parallel to the shaft, and the transmission is carried out through the transmission mechanism formed by the parts on the corresponding shaft.

[0031] The rotary suction arm power assembly based on embodiments of the present invention is suitable for multi-stage dust collectors having, for example, filter plates 8, located between two adjacent dust collection chambers, such as the dust collector disclosed in Chinese Patent Document CN117205685A. The two dust collection chambers have a connecting channel, which is shielded by the filter plate 8, allowing airflow to pass through the filter plate 8 from the first dust collection chamber in the preceding stage to the second dust collection chamber in the following stage. During this process, some debris gradually accumulates on the filter cloth or filter screen of the filter plate 8, affecting its permeability. The rotary suction arm is used to remove the debris from the filter screen or filter cloth, thereby maintaining a relatively high permeability of the filter screen or filter cloth.

[0032] exist Figure 2 As can be seen in the illustrated structure, the rotating arm assembly 4 has a suction port on the side facing the filter plate 8, and the rotating arm has a flow channel. The flow channel is connected to the channel inside the rotating shaft at the root of the rotating arm. Figure 2 The left end of the device has a connecting pipe 16 for connecting to a vacuum device to deliver the debris sucked up by the rotating arm. Since this part is irrelevant to the embodiments of the present invention, it will not be described further.

[0033] Additionally from Figure 1 As can be seen, both dust removal chambers are equipped with augers for removing debris. The first ash hopper of the auger in the first chamber 5 is smaller, while the ash hopper 11 in the second auger is relatively larger. The two ash hoppers can be interconnected at the upper end to form an intermediate bottom shell. This intermediate bottom shell can be a horizontal plate, which can be the lower channel plate of the connecting channel.

[0034] An access port is provided on the middle bottom shell for power intervention of the power unit 32.

[0035] For ease of explanation, the side with the connecting pipe 16 will be referred to as the front side, and as follows: Figure 1 As shown, the dust collector has a ladder 2 on this side to facilitate the maintenance of the dust collector and its auxiliary facilities, which is consistent with the general understanding of those skilled in the art regarding the front side.

[0036] Correspondingly, the side opposite to the front, i.e. the rear side, is also determined by the front and rear conditions, and the left and right sides are also determined. However, it should be noted that in the embodiments of the present invention, the terms "up," "down," and other terms such as "left," "right," "inner," "outer," "front," and "rear," as well as similar expressions, are for illustrative and explanatory purposes only, and are intended to avoid causing misunderstanding to those skilled in the art.

[0037] Similarly, statements that are mutually explanatory, such as vertical or horizontal, are also for the purpose of explanation or clarification.

[0038] In addition, in the field of mechanics, it should be known that the front-to-back direction is also called longitudinal, head-to-tail, or length direction, while the left-to-right direction is also called transverse, width direction, or width direction.

[0039] Additionally, to facilitate the description of the relationship between one component or component and another component or component shown in the accompanying drawings, spatially relative terms, such as "lower," "upper," and similar terms, may be used in embodiments of the invention. It should be understood that the spatially relative terms are intended to cover different orientations of the device during use and operation, in addition to those depicted in the accompanying drawings.

[0040] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0041] Furthermore, as a special note, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] It should be understood that in the field of mechanics, standard geometric terms are typically used to describe approximate mechanical structures, without implying that the mechanical mechanism possesses the exact geometric features corresponding to those terms. For example, a rectangular plate is actually described as a three-dimensional structure based on the characteristics of a planar figure. In the field of mechanics, using a specific explicit feature of a component to describe it is a common descriptive method, but this does not mean that the component necessarily contains the exact geometric shape corresponding to that explicit feature.

[0043] In a dust collector equipped with a rotary suction arm, there are usually multiple rotary suction arms, which are arranged sequentially in the horizontal direction of the dust collector. In the embodiment of the present invention, the power components 32 are arranged in a one-to-one correspondence with the rotating arm assembly 4. In order to avoid interference between the power components of multiple rotary suction arms, the corresponding power components 32 are placed at the bottom.

[0044] exist Figure 1 As can be seen in the illustrated structure, the first housing 5 with the first dust collection chamber and the second housing 9 with the second dust collection chamber need to be supported to a predetermined height to facilitate the installation of, for example, a first debris-collecting auger 3 and a second debris-collecting auger 12. The debris-collecting augers typically have, for example, a hopper 11 at the top to collect debris, thereby forming a wedge-shaped space in the forward direction, for example, between the hoppers 11. Furthermore, due to the installation method of the filter plate 8 and the transition design of the two adjacent dust collection chambers, the lower side of the location where the first dust collection chamber and the second dust collection chamber form a connecting channel has a generally horizontal intermediate bottom shell. The power unit 32 is mounted on the lower side of this intermediate bottom shell or on a frame for supporting the bottom wall.

[0045] As mentioned earlier, the middle bottom shell has an access port for power intervention. It should be noted that the air in the workshop is usually introduced into the dust collector by suction. Therefore, for example, the first dust removal chamber and the second dust removal chamber are usually under negative pressure. The presence of the access port will not cause the introduced air to overflow.

[0046] Although in some implementations the air in the workshop may be drawn in by an exhaust fan and then supplied through an air supply duct connected to the air inlet 6, thus creating a positive pressure state in the first and second dust removal chambers, the inlet is relatively small, and the dust collectors are mostly located inside the workshop. The amount of air diverted from the inlet is relatively small, and since it is already part of the workshop air, the impact is only a minor loss of flow rate. Furthermore, due to the further influence of the protective cover 28, the loss of flow rate is almost negligible. This negligible flow rate has a negligible impact on the power component 32.

[0047] exist Figure 2 In the illustrated rotary vacuum arm power assembly, the arm assembly 4 is supported on a bracket 15, and a third shaft 18 is mounted on its right end. Since the third shaft 18 can be a component of the arm assembly 4, it can be machined together with the shaft of the arm assembly 4 during design and manufacturing. In other embodiments, the arm assembly 4 and the third shaft 18 can be machined separately as independent components and then assembled. The shaft and the third shaft 18 can be connected using, for example, a coupling, or other mechanical locking methods.

[0048] Figure 2The third shaft 18 shown constitutes the sprocket shaft of the second driven sprocket 19 shown in the figure, and is referred to as the second sprocket shaft for easy distinction. The second driven sprocket 19 is installed at the rear end of the third shaft 18 (referred to as the first end for ease of explanation, and the end opposite to the first end is referred to as the second end). As mentioned above, based on the concept of this invention, the second sprocket shaft is also a horizontal shaft, and the disc surface of the second driven sprocket 19 is a vertical disc surface.

[0049] exist Figure 2 and Figure 3 In the illustrated structure, the first shaft 31 is mounted below the second driven sprocket 19. The rear end of the first shaft 31 (referred to as the third end for ease of explanation, and the end opposite to the third end as the fourth end) is equipped with a first driving sprocket 29, which is an output sprocket and is connected to the second driven sprocket 19 through a chain drive mechanism. This connection can be a direct connection or an indirect connection.

[0050] exist Figure 3 In the illustrated structure, a driven pulley 30 is installed at the front end (i.e., the fourth end) of the first shaft 31, and the driven pulley 30 serves as the power input wheel.

[0051] Provide a casing, such as Figure 2 and Figure 3 The protective shield 28 shown is from Figure 2 As can be seen, the protective cover 28, which serves as a housing, accommodates the driven pulley 30, which acts as the power input wheel, while also shielding most of the first shaft 31. The unshielded portion exposes the output sprocket upwards. The housing provides isolation, thereby reducing leakage at the power component 32 from both inside and outside the dust collector.

[0052] Accordingly, the housing has a sealing plate at one end for exposing the output sprocket, such as Figure 6 The end cap 57 shown is from Figure 6 As can be seen, the end cap 57 has a through hole 56 for the first shaft 31 to pass through. Therefore, the through hole 56 can also be referred to as the through hole. It should be noted that the sealing plate is not necessarily only used for the through hole of the first shaft 31. If the sealing plate is located at the installation position of the first bearing seat 33 that supports the first shaft 31, then the through hole obviously needs to be adapted to the outer contour of the first bearing seat 33 in shape, and can be machined into a U-shaped hole.

[0053] Because the power input wheel is housed within and concealed by the housing, the inner cavity of the housing is... Figure 5The shroud 52 shown has a good isolation effect with the corresponding dust removal chamber due to the cooperation between the first shaft 31 or the first bearing seat 33 and the through hole. Even if there is a gap in the fit and a tight seal cannot be achieved, as can be seen from the above description, the harsh environment inside the dust removal chamber has almost no impact on the power component 32.

[0054] The power unit 32 is installed below the cover and outside the corresponding dust removal chamber. It has an output wheel, such as the drive pulley 14, which forms an intervention transmission mechanism with the power input wheel. The lower end of the corresponding dust removal chamber is provided with an intervention port for the intervention of the transmission part of the intervention transmission mechanism.

[0055] For example, the power input pulley is the driven pulley 30, and the output pulley is the driving pulley 14. The two form a belt drive mechanism through the transmission belt 13. The access port only needs to ensure that the belt loop can pass through. Due to the shielding of the casing, the access port is not directly connected to the dust removal chamber. At most, it is connected through the fit clearance between the first shaft 31 or the first bearing seat 33 and the through-shaft hole 56. The environment inside the dust removal chamber has almost no impact on the power component 32.

[0056] The power component 32 is generally an electric motor and reducer assembly, which is common knowledge in this field and will not be described in detail here.

[0057] As mentioned above, the third shaft 18 and the rotating shaft can be a single shaft, or two shafts connected by a fixed connection or a coupling, for transmitting torque. Under these conditions, the third shaft 18 needs to bear bending moment in addition to torque. Therefore, in the preferred embodiment, the third shaft 18 is provided with an independent support. Figure 2 In the illustrated structure, a pair of third bearing seats 17 are provided to support the third shaft 18. The third bearing seats 17 are mounted on the upper end of a second support frame 20, which uses the dust collector body as its mounting base. Figure 2 In the illustrated structure, the dust collector is mounted on the body located below the filter plate 8 via a column 21.

[0058] For ease of description, we will refer to the dust collector body as the main frame, and other supports, such as... Figure 3 The bracket 15 shown is a sub-frame installed on the main frame.

[0059] Following the foregoing, the first shaft 31 and the third shaft 18 can be directly connected by a flexible transmission component such as a transmission chain, or indirectly connected by a transmission mechanism. The latter is preferred because, in the embodiments of the present invention, the power component 32 needs to be located outside the dust removal chamber, while the third shaft 18 is located approximately in the middle of the dust removal chamber in the vertical direction. In order to reduce the disturbance of the airflow by the protective cover 28, the space it occupies should be as small as possible. In other words, the protective cover 28 should be offset downward as much as possible, so that the distance between the first shaft 31 and the third shaft 18 is relatively large.

[0060] The drive chain is a flexible component, and with increased use, it undergoes irreversible deformation and gradually lengthens. In the embodiments of the present invention, the driving sprocket is obviously located below the driven sprocket that cooperates with it to form the chain drive mechanism. The slack drive chain can easily detach from the driving sprocket due to sagging, affecting its driving capability and making it prone to chain slippage. The greater the center distance between the driving and driven sprockets, the greater this impact on the chain drive mechanism. Therefore, in a preferred embodiment, a second shaft 25 is provided, which is located between the first shaft 31 and the third shaft 18, and a second driving sprocket 23 is mounted on the second shaft 25 to form a second chain drive mechanism with the second driven sprocket 19 via a second drive chain 22.

[0061] Meanwhile, the second shaft 25 is also equipped with a first driven sprocket 24 that forms a first chain drive mechanism with the output sprocket through the first transmission chain 27; correspondingly, the output sprocket constitutes a first driving sprocket 29.

[0062] In summary, by using two chain drive mechanisms to shorten the span of a single chain drive mechanism, the impact of chain slack on driving capability is reduced. Furthermore, it should be noted that a slack chain also increases the probability of chain derailment.

[0063] As mentioned earlier, the elongation of the drive chain is a technical limitation that cannot be overcome by the chain itself. In some implementations, a chain link unit can be removed, but this method of shortening the chain to balance its elongation under long-term use is quite limited. Each adjustment is equivalent to adjusting one chain link unit, which often exceeds the margin for active adjustment under the current elongation conditions. Therefore, this approach is only adopted after the drive chain has been used for a considerable period. In many applications, a tensioning device is used to tension the drive chain, stabilize its driving capability, and reduce the probability of chain derailment.

[0064] Accordingly, in a preferred embodiment, the two chain drive mechanisms can be configured with tensioning devices separately, or they can be implemented on a single tensioning device. If a single tensioning device is used, it obviously needs to be located at the position of the second shaft 25. However, regardless of whether the second shaft 25 is adjusted upwards or downwards, it will inevitably cause one chain drive mechanism to be tensioned while the other chain drive mechanism becomes more relaxed. Therefore, in the embodiments of the present invention, on the one hand, the tension of the two chain drive mechanisms is relatively balanced by adjusting in the vertical direction, and on the other hand, the overall tension is adjusted by adjusting in other directions.

[0065] Specifically, the second shaft 25 is mounted on the adjusting plate 37 via the second bearing seat 36, and the second shaft 25 is adjusted in accordance with the adjustment of the adjusting plate 37.

[0066] The adjusting plate 37 is mounted on a fixed plate 34 via an adjusting structure or adjusting mechanism; wherein the fixed plate 34 can be fixedly mounted on the column 21.

[0067] The adjusting structure or mechanism is used to adjust the adjusting plate 37 in the vertical direction and a horizontal direction, where the horizontal direction is the normal direction of the adjusting plate 37. Figure 3 The center is perpendicular to the paper. Tensioning of both chains can be achieved simultaneously through horizontal adjustments, but the tension of the two chains may differ. This tension can be balanced through vertical adjustments.

[0068] It should be noted that the horizontal and vertical adjustments can be partially incorporated into an adjustment structure. For example, the adjustment plate 37 is mounted on the fixed plate 34 via a horizontal fourth axis. The axis of the fourth axis is parallel to the axis of the first axis 31. In this case, the adjustment plate 37 forms a swing frame. When the angle between the adjustment plate 37 and the fixed plate 34 changes due to the rotation of the fourth axis, the second axis 25 will generate vertical and horizontal adjustment components relative to the first axis 31 and the third axis 18. After the adjustment is completed, the fourth axis is locked.

[0069] Adjusting the included angle will result in different tension adjustments for the two transmission chains in the two-chain transmission mechanism. This necessitates a second-stage adjustment. For example, the second bearing seat 36 is indirectly mounted on the adjusting plate 37 via the first mounting plate 35 and the third mounting plate 42. The first mounting plate 35 and the third mounting plate 42 have adjusting holes 41 and 43, which are elongated holes extending vertically. The adjusting plate 37 is correspondingly provided with locking holes, providing connecting bolts 40 and 44 (denoted as the connecting bolt group) that pass through the locking holes and the corresponding elongated holes. When the connecting bolt group loosens, the adjusting plate 37 can be adjusted vertically to balance the tension of the two-chain transmission mechanism. After adjustment, the connecting bolt group is locked.

[0070] Because adjusting directly by loosening the connecting bolt assembly is difficult to control, it generally needs to be done under the condition that the connecting bolt assembly has a predetermined preload (controlled by a torque wrench). In some implementations, adjustment can be achieved by tapping the adjusting plate 37 from above or below with a rubber mallet, but this is also difficult to control. Therefore, in Figure 4 The illustrated structure provides a second adjustment method, namely adjustment achieved by means of helical lift.

[0071] The adjusting nut 46 can be fixed to, for example, the first mounting plate 35 and the second mounting plate 42. Since these two mounting plates can be a single mounting plate, they are collectively referred to as adjusting mounting plates.

[0072] A first adjusting bolt 45 is provided to mate with the adjusting nut 46. The first adjusting bolt 45 abuts against, for example, the lower end face of the adjusting plate 37. During adjustment, the preload of the connecting bolt assembly is brought to a predetermined value, and then the first adjusting bolt 25 can be driven to provide helical lifting force to move the adjusting plate 37.

[0073] It should be noted that the positional relationship described above is different from... Figure 4 The illustrated structures differ. In some embodiments, the adjustment mounting plate can be mounted on the fixed plate 34 via the fourth shaft, while the adjustment plate 37 can be assembled via an up-down adjustment structure. In this case, the second bearing seat 36 is directly mounted on the adjustment plate 37, and under this condition, the adjustment nut 46 is fixed to the fixed plate 34 by, for example, welding, and the first adjustment bolt 45 abuts the adjustment mounting plate.

[0074] In some implementations, direct adjustments in two vertical directions can be used. The adjustments in the vertical direction have been described in the previous embodiments. The adjustments in a horizontal direction that are perpendicular to the vertical direction can be represented by using a horizontal mechanism or structure for adjustment.

[0075] Specifically, it is assumed that the adjustment of the adjusting plate 37 in the vertical direction is achieved by the cooperation of the elongated hole and the connecting bolt group, as well as the first adjusting bolt 45 and the adjusting nut 46. Then, the adjustment mounting plate that supports the adjusting plate 37 is adjusted. The adjustment mounting plate can be mounted on the fixed plate 34 by, for example, a linear guide pair, such as a guide rod and guide sleeve pair, wherein the guide rod is fixed on the fixed plate 34, and the guide sleeve is fixed on the adjustment mounting plate. The guide sleeve has a set screw hole, and after the adjustment is completed, the guide rod and guide sleeve pair can be locked with the set screw.

[0076] As mentioned above, the through hole is either a U-shaped hole or a round hole; if it is a U-shaped hole, the outer contour of a first bearing housing that provides support for the first shaft 31 mates with the U-shaped hole. The cross-section of the bearing housing is mostly U-shaped, and the through hole with a U-shaped hole structure is advantageous for first installing the first shaft 31 and then installing the protective cover 28, that is, installing it by having the U-shaped hole downwards and locking it onto the first bearing housing.

[0077] Furthermore, the fit between the U-shaped hole and the first bearing housing is a static seal fit, which makes it easy to construct a relatively tight seal fit.

[0078] If the through hole is a round hole, then the round hole and the first shaft 31 are in clearance fit or there is a fit clearance. In this case, the through hole and the first shaft 31 are in dynamic seal fit. For example, a shaft seal, a labyrinth seal or other dynamic seal structure can be provided at the round hole.

[0079] See Figure 5 and Figure 6 The cover shown in the figure includes a cover body 51 mainly composed of an arc-shaped cover head and two parallel side plates. This structure is similar to the structure of the bearing seat, which is beneficial to reduce the overall size of the cover.

[0080] Correspondingly, each of the two side plates is connected to both ends of the arc-shaped cover and extends downward, so that the cross-section of the cover 51 is a U-shaped structure. Correspondingly, the axis of the arc-shaped cover is located on the lower side of the arc-shaped cover, forming an upward convex curved panel, so that falling debris slides down the protective cover 28.

[0081] The lower end of the side plate of the cover 51 with a U-shaped cross section can be turned outward to form an outward connecting flange. A fixing hole 50 can be opened on the connecting flange, and it can be fixed to, for example, the base plate 47.

[0082] In some embodiments, such as Figure 5 As shown, the lower end of the cover 51 is sealed with a lower cover plate 49, and the lower cover plate 49 has a first through hole 53 for, for example, a drive belt to pass through. Corresponding to the concept of an intervention port, the first through hole 53 is aligned with the intervention port and can be defined as a secondary intervention port. Correspondingly, the intervention port can also be defined as... Figure 5 The second via 54 is shown in the figure.

[0083] The cover 51 and the lower cover plate 49 can be connected as a whole by welding.

[0084] exist Figure 5 and Figure 6 In the illustrated structure, the housing is not directly mounted on the base plate 47. Instead, a side support plate 48 supports the housing to a certain height, providing a relatively large operating space for the installation of, for example, the first shaft 31. This height is one-third to two-thirds of the distance between the seat hole on the first bearing housing and the base plate 47.

[0085] Combination Figure 5 and Figure 6 Two channel steel components form a side support plate 48, which is arranged opposite to each other to form a cover support frame. The cover support frame can be sealed at both ends or at one end. If one end is sealed, the sealed end is the end where the end cover 57 is located. For the other end, since it can fit against the panel inside the dust removal chamber, it does not need to be sealed again to simplify the structure. If there is no panel to rely on, a sealing plate can be used for sealing. The opening of the cover cavity 52 opposite to the end cover 57 can be connected by a flange to set another sealing plate to improve maintainability.

[0086] The above description is illustrative in conjunction with the accompanying drawings and is not intended to limit the invention. Within the framework of this invention, the above embodiments or different embodiments can be combined without conflict. Although the invention has been described in detail in the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this invention.

Claims

1. A rotary vacuum cleaner arm power assembly, characterized in that, include: The second driven sprocket is installed at the first end of the shaft of the rotary vacuum arm; A first shaft is installed below a second driven sprocket, and an output sprocket is installed at the third end of the first shaft to connect with the second driven sprocket via a chain drive mechanism. The power input wheel is mounted on the fourth end of the first shaft, which is opposite to the third end; A housing for accommodating the main body of the power input wheel and the first shaft, and exposing the output sprocket upwards; as well as The power unit is installed below the cover and outside the corresponding dust removal chamber, and has an output wheel. The lower end of the corresponding dust removal chamber is provided with an access port. The output wheel cooperates with the power input wheel to form an intervention transmission mechanism. The cover has a sealing plate at one end of the output sprocket, and the sealing plate has a through hole for the first shaft to pass through.

2. The rotary vacuum arm power assembly according to claim 1, characterized in that, A third shaft is provided, which serves as a mounting base for the second driven sprocket on the rotating shaft; The third shaft is fixedly connected to the rotating shaft, forming an integral shaft or connected by a coupling, and the third shaft is mounted on a given mounting bracket via a third bearing seat; The second end of the rotating shaft, which is opposite to the end where the third shaft is located, is equipped with a connecting pipe for connecting to the vacuuming system.

3. The rotary vacuum arm power assembly according to claim 2, characterized in that, The mounting frame includes a column that is mounted on the main frame of the dust collector.

4. The rotary vacuum arm power assembly according to claim 3, characterized in that, A second shaft is provided, which is located between the first shaft and the third shaft, and a second drive sprocket is mounted on the second shaft and forms a second chain drive mechanism with the second driven sprocket through a second transmission chain; The second shaft is also equipped with a first driven sprocket that forms a first chain drive mechanism with the output sprocket via a first transmission chain; correspondingly, the output sprocket constitutes a first driving sprocket.

5. The rotary vacuum arm power assembly according to claim 4, characterized in that, The second shaft is mounted on the adjusting plate via a second bearing seat; The adjusting plate is mounted on a fixed plate via an adjusting structure or adjusting mechanism; The adjustment structure or adjustment mechanism is used to adjust the plate in the vertical direction and in a horizontal direction, where the horizontal direction is the normal direction of the plate.

6. The rotary vacuum arm power assembly according to claim 1, characterized in that, The through hole is a U-shaped hole or a round hole; If it is a U-shaped hole, the outer contour of a first bearing seat used to provide support for the first shaft mates with the U-shaped hole; If it is a round hole, the round hole and the first shaft are in clearance fit or there is a fit clearance.

7. The rotary vacuum arm power assembly according to claim 1, characterized in that, The cover includes a cover body mainly composed of an arc-shaped cover head and two parallel side plates. Correspondingly, each of the two side plates is connected to one end of the arc-shaped cover head and extends downward. The axis of the arc-shaped cover head is located on the lower side of the arc-shaped cover head. The lower end of the side panel has a connecting flange or provides a lower cover plate for sealing the lower end of the cover body; Correspondingly, a secondary intervention port is provided on the lower cover plate, which is aligned with the intervention port.

8. The rotary vacuum arm power assembly according to claim 7, characterized in that, A housing support frame is provided, the housing support frame including a base plate and a base frame connected to the base plate for supporting the housing to a predetermined height; Accordingly, the connecting flange or lower cover plate is fixed to the base frame; The base frame must be enclosed on at least three sides. When three sides are enclosed, the remaining side is the side opposite to the side with the sealing plate.

9. A dust collector, which is a multi-stage dust collector, wherein filter plates are vertically arranged between adjacent dust collectors, and a rotary suction arm assembly for cleaning the filter plates is adapted to the filter plates, characterized in that, It also includes the rotary vacuum arm power assembly as described in any one of claims 1 to 8, wherein the rotary vacuum arm power assembly and the vacuum arm of the rotary vacuum arm assembly are located on opposite sides of the filter plate.

10. The dust collector according to claim 9, characterized in that, Two adjacent dust collectors form a first dust collector and a second dust collector, with a vertically arranged filter plate serving as the boundary between the first dust collector chamber and the second dust collector chamber; The second dust removal chamber is a downstream dust removal chamber, and the lower part of the second dust removal chamber has a ash hopper and an intermediate bottom shell located at the upper end of the ash hopper and horizontally connected to the first dust collector shell. Accordingly, the power unit is located on the lower side of the intermediate bottom shell, and the intermediate bottom shell has the access port.

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