Dust removal device and dust removal system

Abstract

The utility model provides a dust removal device and a dust removal system. The dust removal device comprises an air pipe; the air door is rotatably arranged in the air pipe so as to adjust the flow of the dust removal airflow flowing through the air pipe; the driving part comprises a driving handle which is in driving connection with the air door; and the locking part has a locking state and a locking release state, in the locking state, the locking part is configured to enable the driving handle to be located at the fixed position relative to the air pipe, and in the locking release state, the driving handle is configured to be capable of driving the air door to rotate. The dedusting system comprises a dedusting device. The dust removal device provided by the utility model is beneficial for limiting the air door to rotate and be locked under the action of high-speed dust removal airflow through the locking part, so that normal and stable operation of a dust removal system is guaranteed.

Description

Technical Field

[0001] This disclosure relates to the field of tobacco machinery technology, and in particular to a dust removal device and dust removal system. Background Technology

[0002] "Leaf threshing and re-drying" is the first step in tobacco processing. Thickening and re-drying workshops are typically equipped with wind-powered sorting and conveying equipment, which generates a significant amount of dust. To improve the production environment and enhance processing quality, dust removal devices are also installed on the production line. Figure 1 As shown, in related technologies, the dust removal device includes a duct 100', a damper 1', and a drive handle 20' for adjusting the angle of the damper 1'. During production operation, due to the high velocity of the dust removal airflow flowing through the duct 100', after long-term use, it becomes difficult to accurately adjust the angle of the damper 1' using the drive handle 20', and the damper 1' may even become locked. If the damper 1' is locked, it will affect the normal and stable operation of the entire dust removal system, resulting in increased energy consumption, a deteriorated production environment, and reduced product quality in the "leaf re-drying" process. Utility Model Content

[0003] The purpose of this disclosure is to provide a dust removal device and a dust removal system, which aims to solve the problems that the damper lock of the dust removal device will affect the normal and stable operation of the entire dust removal system, resulting in increased energy consumption, deterioration of the production environment, and reduced product quality in the "leaf removal and re-drying" process.

[0004] The first aspect of this disclosure provides a dust removal device, comprising:

[0005] Air ducts;

[0006] A damper is rotatably disposed inside the duct to regulate the flow rate of the dust removal airflow passing through the duct;

[0007] Drive handle, the drive handle being connected to the damper drive; and

[0008] The locking part has a locked state and a locked-out state. In the locked state, the locking part is configured to keep the drive handle in a fixed position relative to the air duct. In the locked-out state, the drive handle is configured to drive the damper to rotate.

[0009] In some embodiments of the dust removal device,

[0010] The locking part includes a positioning hole plate and a positioning pin. The positioning hole plate is fixedly connected to the outside of the air duct and is located between the drive handle and the air duct, and includes a positioning hole.

[0011] The drive handle includes a pin hole. In the locked state, the positioning pin is configured to extend into the pin hole and the positioning hole to place the drive handle in a fixed position relative to the positioning hole plate. In the unlocked state, the positioning pin is configured to disengage from the positioning hole to allow the drive handle to rotate relative to the positioning hole plate.

[0012] In some embodiments of the dust removal device, the positioning plate includes a plurality of positioning holes, which are evenly arranged circumferentially.

[0013] In some embodiments of the dust removal device, the locking part further includes a positioning pin seat and a first elastic element. The positioning pin seat is located on the side of the positioning hole plate opposite to the air duct along the extension direction of the positioning hole. The positioning pin seat has a receiving space. The positioning pin is movably disposed in the receiving space along its own axial direction. The first elastic element is configured to apply a force toward the positioning hole to the positioning pin.

[0014] In some embodiments of the dust removal device, the first elastic element is disposed within the accommodating space along the extension direction of the positioning pin, the first end of the first elastic element is fixedly connected to the positioning pin seat, and the second end of the first elastic element is fixedly connected to the positioning pin.

[0015] In some embodiments of the dust removal device, the locking part further includes a locking handle, which is rotatably connected to the drive handle and configured to drive the positioning pin out of the positioning hole to switch the locking part from the locked state to the unlocked state.

[0016] In some embodiments of the dust removal device,

[0017] The positioning pin includes a pin head and a pin rod, the pin head being connected to the pin rod and located at the end of the pin rod away from the positioning hole;

[0018] One end of the locking handle is abutting against the side of the pin head that is connected to the pin rod along the extension direction of the pin rod, and is configured to drive the positioning pin out of the positioning hole by driving the pin head.

[0019] In some embodiments of the dust removal device,

[0020] The locking handle includes a first locking handle portion and a second locking handle portion, which are angled together. The connection between the first and second locking handle portions is hinged to the drive handle. In the locked state, the first locking handle portion gradually tilts away from the positioning hole plate from its connection point with the second locking handle portion. The second locking handle portion extends parallel to the positioning hole plate, and the end of the second locking handle portion away from the first locking handle portion is drivably engaged with the pin head.

[0021] When the first locking handle is rotated toward the side closer to the drive handle, the second locking handle applies a pushing force to the pin head, driving the pin head to move away from the positioning hole plate and disengage from the positioning hole in the direction of the pin rod extension. When rotated away from the drive handle, the end of the second locking handle away from the first locking handle moves toward the positioning hole plate to remove the pushing force on the pin head.

[0022] In some embodiments of the dust removal device,

[0023] The drive handle includes a first drive handle portion and a second drive handle portion. The first drive handle portion is parallel to the positioning hole plate and rotatably connected to the locking handle. The second drive handle portion is a corner-shaped handle portion, which includes a first connecting segment and a second connecting segment connected to each other at an angle. The first connecting segment connects the second connecting segment and the first drive handle portion. The second connecting segment is parallel to the positioning hole plate and its distance from the positioning hole plate is less than the distance between the first drive handle portion and the positioning hole plate. The second connecting segment is driven by the damper, and the pin hole is located in the second connecting segment; and / or

[0024] The locking handle includes a limiting plate, which is connected to the end of the second locking handle away from the first locking handle, and the end of the limiting plate away from the second locking handle abuts against the pin.

[0025] In some embodiments of the dust removal device, the locking part further includes a second elastic element connected between the locking handle and the driving handle, configured to apply a driving force to the locking handle and the driving handle to bring them closer or further apart.

[0026] In some embodiments of the dust removal device, a transmission unit is also included, which is disposed between the damper and the drive handle and is configured to transmit and amplify the torque of the drive handle to the damper.

[0027] In some embodiments of the dust removal device,

[0028] The damper includes a damper shaft;

[0029] The transmission unit includes a first gear and a second gear, which mesh with each other. The diameter of the first gear is smaller than that of the second gear. The drive handle is driven to the first gear and is configured to drive the first gear to rotate. The second gear is driven to the damper shaft and is configured to drive the damper shaft to rotate.

[0030] A second aspect of this disclosure provides a dust removal system, comprising:

[0031] A fan is configured to provide the dust removal airflow; and

[0032] The dust removal device according to the first aspect of this disclosure, wherein the air duct is connected to the fan.

[0033] Based on the dust removal device provided in this disclosure, a locking part with a locked state and a unlocked state is provided. In the locked state, the drive handle is fixed in a position relative to the air duct, and in the unlocked state, the drive handle can drive the damper to rotate. This dust removal device is advantageous in preventing the damper from rotating and locking under the action of high-speed dust removal airflow by the locking part, thereby helping to ensure the normal and stable operation of the dust removal system.

[0034] The dust removal system disclosed herein includes the dust removal device disclosed herein, thereby having the advantages of the dust removal device disclosed herein.

[0035] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0036] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0037] Figure 1 This is a side view schematic diagram of a dust removal device based on related technologies;

[0038] Figure 2 This is a top view of a dust removal device according to an embodiment of the present disclosure;

[0039] Figure 3 for Figure 2 The diagram shows a side view of the dust removal device.

[0040] Figure 4 for Figure 2 The diagram shows an enlarged view of a portion of the dust removal device, illustrating the transmission and locking components.

[0041] Figure 5 This is a schematic diagram of a portion of the structure of a dust removal device according to another embodiment of the present disclosure.

[0042] Figures 1 to 5 In the figures, the labels represent:

[0043] 100', air duct; 1', damper; 20', drive handle;

[0044] 100. Air duct; 1. Air damper; 10. Air damper shaft; 200. Gearbox; 211. First gear; 212. Second gear; 210. Bearing; 20. Drive handle; 20a. Pin hole; 201. First drive handle; 202. Second drive handle; 30. Locking handle; 301. First locking handle; 302. Second locking handle; 303. Limiting plate; 31. Positioning hole plate; 31a. Positioning hole; 32. Positioning pin; 321. Pin head; 322. Pin rod; 33. Positioning pin seat; 34. First elastic element; 35. Second elastic element. Detailed Implementation

[0045] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0046] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0047] In the description of this disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0048] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are generally based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0049] like Figures 2 to 5 As shown, this disclosure provides a dust removal device. The dust removal device includes a duct 100, a damper 1, a drive handle 20, and a locking part. The damper 1 is rotatably disposed within the duct 100 to regulate the flow rate of the dust removal airflow passing through the duct 100. The drive handle 20 is drivenly connected to the damper 1. The locking part has a locked state and a locked-out state. In the locked state, the locking part is configured to keep the drive handle 20 in a fixed position relative to the duct 100. In the locked-out state, the drive handle 20 is configured to drive the damper 1 to rotate.

[0050] Based on the dust removal device provided in this disclosure, a locking part with a locked state and a unlocked state is provided so that the drive handle 20 is fixed relative to the air duct 100 in the locked state. In the unlocked state, the drive handle 20 can drive the damper 1 to rotate. This dust removal device is advantageous in preventing the damper 1 from rotating and locking under the action of high-speed dust removal airflow by the locking part, thereby helping to ensure the normal and stable operation of the dust removal system.

[0051] like Figures 2 to 5 As shown, in some embodiments, the damper 1 may include a damper plate and a damper shaft 10 fixedly connected. The drive handle 20 is driven to rotate the damper shaft 10, thereby driving the damper plate to rotate and adjusting the angle of the damper 10.

[0052] By driving the damper shaft 10 to rotate, and thus driving the damper 1 to rotate, it is beneficial to accurately control the angle of the damper 1, thereby facilitating accurate control of the flow rate of the dust removal airflow.

[0053] like Figures 2 to 5As shown, in some embodiments, the locking part includes a positioning plate 31 and a positioning pin 32. The positioning plate 31 is fixedly connected to the outside of the duct 100 and is located between the drive handle 20 and the duct 100. The positioning plate 31 includes a positioning hole 31a. The drive handle 20 includes a pin hole 20a. In the locked state, the positioning pin 32 is configured to extend into the pin hole 20a and the positioning hole 31a, so that the drive handle 20 is in a position fixed relative to the positioning plate 31. In the unlocked state, the positioning pin 32 is configured to disengage from the positioning hole 31a, so that the drive handle 20 can rotate relative to the positioning plate 31.

[0054] The drive handle 20 is fixed relative to the positioning hole plate 31 by the positioning pin 32, thus fixing the drive handle 20 in a fixed position relative to the air duct 100. This arrangement is simple in structure, has a low failure rate, is easy to maintain, and facilitates quick switching between the locking and unlocking states of the locking part. In addition, the positioning hole plate 31 allows for flexible setting of the position of the positioning hole 31a according to the rotation angle of the damper 1.

[0055] like Figure 3 As shown, in some embodiments, the positioning plate 31 includes a plurality of positioning holes 31a. The plurality of positioning holes 31a are evenly arranged circumferentially.

[0056] Due to differences in the grade and origin of the processed tobacco leaves, or variations in humidity and temperature within the duct 100 during processing, the dust removal device needs to adjust the flow rate of the dust removal airflow. In this case, setting multiple positioning holes 31a helps to adjust the rotation angle of the damper 1 in accordance with the flow rate of the dust removal airflow, thereby reducing the risk of qualified tobacco leaves being accidentally sucked into the dust removal device and reducing tobacco leaf consumption. In addition, the multiple positioning holes 31a are evenly arranged circumferentially, which helps the operator quickly determine the positioning hole 31a corresponding to a certain angle, improving the intuitiveness of operation and adjustment efficiency.

[0057] like Figure 4 and Figure 5 As shown, in some embodiments, the locking portion further includes a locating pin seat 33 and a first elastic element 34. The locating pin seat 33 is located on the side of the locating plate 31 facing away from the duct 100 along the extension direction of the locating hole 31a. The locating pin seat 33 has a receiving space. The locating pin 32 is movably disposed within the receiving space along its own axial direction. The first elastic element 34 is configured to apply a force toward the locating hole 31a to the locating pin 32.

[0058] The first elastic element 34 facilitates the insertion of the positioning pin 32 into the positioning hole 31a, thereby enabling a quick switch from the unlocked state to the locked state. This also facilitates the adjustment of the damper 1 to the rotation angle corresponding to the re-insertion of the positioning pin 32 into the positioning hole 31a, achieving a precise adjustment position. The accommodating space of the positioning pin seat 33 helps protect the first elastic element 34 from external environmental corrosion, thus maintaining its performance.

[0059] like Figure 4 and Figure 5 As shown, in some embodiments, the first elastic element 34 is disposed within the accommodating space along the extending direction of the positioning pin 32. A first end of the first elastic element 34 is fixedly connected to the positioning pin seat 33. A second end of the first elastic element 34 is fixedly connected to the positioning pin 32.

[0060] The first end of the first elastic element 34 is fixedly connected to the positioning pin seat 33, and the second end of the first elastic element 34 is fixedly connected to the positioning pin 32. This arrangement is simple and compact, which is conducive to directly driving the positioning pin 32 to move through the elastic force of the first elastic element 34, and is conducive to the accurate and rapid insertion of the positioning pin 32 into the positioning hole 31a.

[0061] In some embodiments, such as Figure 4 As shown, the locating pin seat 33 can be, for example, a hollow sleeve, and the first end of the first elastic element 34 can be connected to the end of the cylindrical sidewall of the locating pin seat 33 that is axially away from the locating hole plate 31 along the locating pin 32. In other embodiments, such as Figure 5 As shown, the positioning pin seat 33 may include a cylindrical side wall and an end wall, the end wall being disposed on the side of the cylindrical side wall away from the positioning hole plate 31 along the axial direction of the positioning pin 32 and perpendicular to the cylindrical side wall, and the first end of the first elastic element 34 may be connected to the end wall.

[0062] like Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, the locking part further includes a locking handle 30, which is rotatably connected to the drive handle 20 and configured to drive the positioning pin 32 out of the positioning hole 31a to switch the locking part from the locking state to the locking release state.

[0063] The locking handle 30 acts as a lever. Using the locking handle 30 to drive the positioning pin 32 out of the positioning hole 31a reduces the force required by the operator and facilitates operation. Furthermore, the locking handle 30 and the drive handle 20 are rotatably connected, allowing the operator to simultaneously hold the locking handle 30 and maintain the positioning pin 32 out of the positioning hole 31a while rotating the drive handle 20. This helps prevent the first elastic element 34 from driving the positioning pin 32 towards the positioning hole plate 31 during the rotation of the drive handle 20, thus avoiding difficulty in rotating the drive handle 20.

[0064] like Figure 4 and Figure 5 As shown, in some embodiments, the positioning pin 32 includes a pin head 321 and a pin rod 322. The pin head 321 is connected to the pin rod 322 and is located at the end of the pin rod 322 away from the positioning hole 31a. One end of the locking handle 30 is abutting against the side of the pin head 321 that is connected to the pin rod 322 along the extension direction of the pin rod 322, and is configured to drive the positioning pin 32 out of the positioning hole 31a by driving the pin head 321.

[0065] The pin head 321 of the positioning pin 32 facilitates the engagement position between the positioning pin 32 and the locking handle 30, which helps improve the reliability of the drive. In addition, the pin head 321 facilitates the positioning of the positioning pin 32 in the axial direction, preventing the positioning pin 32 from being completely inserted into the positioning hole 31a and difficult to pull out.

[0066] like Figure 4 As shown, in some embodiments, the locking handle 30 includes a first locking handle portion 301 and a second locking handle portion 302. The first locking handle portion 301 and the second locking handle portion 302 are angled together. The portion where the first locking handle portion 301 and the second locking handle portion 302 are connected is hinged to the drive handle 20. In the locked state, the first locking handle portion 301 gradually tilts away from the positioning hole plate 31 from the connection point with the second locking handle portion 302, and the second locking handle portion 302 extends in a direction parallel to the positioning hole plate 31. The end of the second locking handle portion 302 away from the first locking handle portion 301 is drivably engaged with a pin head 321. When the first locking handle portion 301 is configured to rotate toward the side closer to the drive handle 20, the second locking handle portion 302 applies a pushing force to the pin head 321, driving the pin head 321 to move away from the positioning hole plate 31 and disengage from the positioning hole 31a in the direction extending from the pin shank 322. The first locking handle 301 is configured such that when it is rotated to the side away from the drive handle 20, the end of the second locking handle 302 away from the first locking handle 301 moves toward the positioning hole plate 31 to remove the pushing force on the pin head 321.

[0067] The arrangement of the first locking handle 301 and the second locking handle 302 facilitates a compact structure. Through a simple hinged connection and angle adjustment, the locking part can switch between the locked and unlocked states, reducing the structural complexity of the locking part and lowering manufacturing costs. Furthermore, this arrangement allows the operator to flexibly adjust the grip and operating angle according to the available space, improving ease of operation and comfort.

[0068] In some embodiments not shown, in the locked state, the second locking handle 302 may also gradually tilt from the connection point with the first locking handle 301 toward the positioning hole plate 31.

[0069] This arrangement allows the pin head 321 of the positioning pin 32 to be closer to the positioning hole plate 31, and helps to shorten the length of the pin rod 322 of the positioning pin 32, thereby improving locking stability.

[0070] like Figure 4 and Figure 5 As shown, in some embodiments, the first locking handle 301 can be configured to rotate near the drive handle 20 to cause the second locking handle 302 to drive the positioning pin 32 out of the positioning hole 31a.

[0071] In other embodiments, the first locking handle 301 may also be configured to rotate away from the drive handle 20 to cause the second locking handle 302 to drive the positioning pin 32 out of the positioning hole 31a. For example, in the locked state, the first locking handle 301 is disposed parallel to the positioning hole plate 31, and during the transition from the locked state to the unlocked state, the first locking handle 301 is configured to rotate in a direction closer to the positioning hole plate 31 and away from the drive handle 20.

[0072] like Figures 2 to 4 As shown, in some embodiments, the drive handle 20 includes a first drive handle portion 201 and a second drive handle portion 202. The first drive handle portion 201 is disposed parallel to the positioning hole plate 31 and rotatably connected to the locking handle 30. The second drive handle portion 202 is a corner-shaped handle portion. The corner-shaped handle portion includes a first connecting segment and a second connecting segment connected to each other and forming an angle. The first connecting segment is connected between the second connecting segment and the first drive handle portion 201. The second connecting segment is parallel to the positioning hole plate 31 and the distance between the second connecting segment and the positioning hole plate 31 is less than the distance between the first drive handle portion 201 and the positioning hole plate 31. The second connecting segment is driven connected to the damper 1. A pin hole 20a is disposed in the second connecting segment. The locking handle portion 30 includes a limiting plate 303, which is connected to the end of the second locking handle portion 302 away from the first locking handle portion 301. The end of the limiting plate 303 away from the second locking handle portion 302 abuts against the pin head 321.

[0073] The first drive handle 201 being arranged parallel to the positioning hole plate 31 facilitates a compact structure and reduces the axial dimension of the dust removal device along the pin 322. The arrangement of the limiting plate 303 and the second drive handle 202 helps to limit the rotation angle of the locking handle 30 when the locking part switches from the unlocked state to the locked state. It also helps to bring the first locking handle 301 of the locking handle 30 closer to the positioning hole plate 31 when it is locked, thereby improving safety and preventing injury to the operator from the end of the first locking handle 301.

[0074] like Figure 2 As shown, in some embodiments, the dust removal device further includes a transmission unit. The transmission unit is disposed between the damper 1 and the drive handle 20 and is configured to transmit and amplify the torque of the drive handle 20 to the damper 1.

[0075] By amplifying the torque of the drive handle 20 through the transmission unit, it is beneficial to increase the driving force acting on the damper 1. In particular, for the operator, the damper 1 can be opened or closed with less force, thereby reducing the difficulty of operation and improving work efficiency.

[0076] like Figure 3 and Figure 4 As shown, in some embodiments, the damper 1 includes a damper shaft 10. The transmission unit includes a first gear 211 and a second gear 212. The first gear 211 and the second gear 212 mesh, and the diameter of the first gear 211 is smaller than the diameter of the second gear 212. A drive handle 20 is drivenly connected to the first gear 211 and configured to drive the first gear 211 to rotate. The second gear 212 is drivenly connected to the damper shaft 10 and configured to drive the damper shaft 10 to rotate.

[0077] Setting up the first gear 211 and the second gear 212 helps to amplify the torque through gear cooperation, making it easier to rotate the damper 1. This helps to prevent the damper 1 from being locked due to the operator's difficulty in rotating it when the dust removal airflow velocity is high. It also helps to prevent the damper 1 from reversing under the action of the dust removal airflow, which could cause safety problems.

[0078] In some embodiments, the diameter ratio of the first gear 211 and the second gear 212 can be set to 1:2, and the angle between two adjacent positioning holes 31a can be set to 15°. That is, for every 15° the drive handle 20 rotates between two adjacent positioning holes 31a, the damper 1 rotates 7.5°.

[0079] like Figures 2 to 5 As shown, the first gear 211 and the second gear 212 are located inside the gearbox 200 connected to the outside of the air duct 100, and the box wall of the gearbox 200 perpendicular to the damper shaft 10 of the damper 1 serves as the positioning hole plate 31.

[0080] This configuration facilitates a compact structure, reduces the distance between the drive handle 20 and the first gear 211, and improves drive stability.

[0081] like Figure 5 As shown, in some embodiments, the locking portion further includes a second elastic element 35. The second elastic element 35 is connected between the locking handle 30 and the driving handle 20 and is configured to apply a driving force to the locking handle 30 and the driving handle 20 to bring them closer or further apart.

[0082] The second elastic element 35 facilitates the rapid switching of the locking part from the unlocked state to the locked state, thereby improving the operator's operational efficiency. In addition, the second elastic element 35 also helps to limit the rotation angle of the first locking handle 301, preventing the first locking handle 301 from rotating too much and causing the positioning pin 32 to move away from the positioning hole plate 31 to a position where it is difficult to return to the positioning hole 31a.

[0083] Another aspect of this disclosure provides a dust removal system, which includes a fan and a dust removal device provided in this disclosure. The fan is configured to provide a dust removal airflow. A duct 100 is connected to the fan.

[0084] The dust removal system of this disclosure has the advantages of the dust removal device of this disclosure.

[0085] The following combination Figures 2 to 4 A dust removal apparatus according to an embodiment of the present disclosure will be described in detail. For the sake of simplicity, the following front-back direction corresponds to... Figure 2 The left and right directions and the up and down directions correspond to Figure 2 and Figure 3 The up and down directions in the middle.

[0086] like Figure 2As shown, the dust removal device includes a duct 100, a damper 1, a drive handle 20, a transmission part, and a locking part. The damper 1 is rotatably disposed within the duct 100 and includes a damper shaft 10. The transmission part includes a first gear 211 and a second gear 212. The drive handle 20 is driven to the damper shaft 10 of the damper 1 via the first gear 211 and the second gear 212, so as to rotate the damper 1 by driving the damper shaft 10 to rotate, and to adjust the flow rate of the dust removal airflow through the duct 100 by controlling the rotation angle of the damper 1. The locking part includes a locking handle 30, a positioning hole plate 31, and a positioning pin 32. The positioning hole plate 31 is located between the drive handle 20 and the duct 100 and includes a positioning hole 31a. The locking part has a locked state and a locked-out state. In the locked state, the positioning pin 32 is configured to extend into the pin hole 20a and the positioning hole 31a on the drive handle 20, so that the drive handle 20 is in a fixed position relative to the positioning hole plate 31. In the unlocked state, the locking handle 30 is configured to drive the positioning pin 32 to disengage from the positioning hole 31a so that the drive handle 20 can rotate relative to the positioning hole plate 31.

[0087] The dust removal device of this embodiment is advantageous in providing a large rotational torque through the drive handle 20 and the transmission part to achieve rapid opening and closing of the damper 1, thereby improving the damper adjustment efficiency. It is also advantageous in avoiding problems such as locking through the locking part and in achieving accurate positioning of the rotation angle of the damper 1, which is beneficial to ensuring the continuity and reliability of production operations, improving dust removal efficiency, and improving the quality of tobacco processing.

[0088] like Figure 2 As shown, the damper 1 is a circular damper, and the damper shaft 10 is set along the horizontal diameter of the damper 1. This setting is conducive to the damper 1 being evenly stressed during the driving process, thereby reducing the risk of deformation or damage to the damper 1 and extending its service life.

[0089] like Figures 2 to 4 As shown, the transmission unit also includes a gearbox 200, with a first gear 211 and a second gear 212 located inside the gearbox 200. A drive handle 20 is located at the front of the gearbox 200. The first gear 211 and the second gear 212 mesh with each other, and the diameter of the first gear 211 is smaller than the diameter of the second gear 212. The drive handle 20 is drivenly connected to the first gear 211 and configured to drive the first gear 211 to rotate. The second gear 212 is drivenly connected to the damper shaft 10 and configured to drive the damper shaft 10 to rotate.

[0090] The gearbox 200's wall, perpendicular to the damper shaft 10 of the damper 1, serves as a positioning plate 31. The positioning plate 31 includes 13 positioning holes 31a. These 13 holes 31a are evenly arranged along the lower semicircle, with an angle of 15° between adjacent holes 31a. The diameter ratio of the first gear 211 to the second gear 212 is 1:2. For every 15° rotation of the drive handle 20, the damper 1 rotates 7.5°. Each positioning hole 31a on the positioning plate 31 is marked with a scale line, and every other scale line marks the angle value of the damper 1 corresponding to that positioning hole 31a, i.e., the value marked for every 15° rotation of the damper 1. When the drive handle 20 is rotated clockwise downwards from a horizontal angle, the damper 1 starts rotating from a position perpendicular to the axis of the duct 100. When the drive handle 20 rotates 180°, the damper 1 rotates 90°, and at this point, the flow rate of the dust removal airflow within the duct 100 reaches its maximum value.

[0091] The drive handle 20 includes a first drive handle portion 201 and a second drive handle portion 202. The first drive handle portion 201 is arranged parallel to the positioning hole plate 31 and is rotatably connected to the locking handle 30. The second drive handle portion 202 is a corner-shaped handle portion, which includes a first connecting section and a second connecting section that are perpendicularly connected to each other. The first connecting section is connected between the second connecting section and the first drive handle portion 201. The first connecting section is arranged perpendicular to the positioning hole plate 31, and the second connecting section is arranged parallel to the positioning hole plate 31. The second connecting section is fixedly connected to the gear shaft of the first gear 211, and the first gear 211 is driven to rotate by rotating the second connecting section. A pin hole 20a is provided on the second connecting section. The pin hole 20a extends in the same direction as the positioning hole 31a and has the same diameter as the positioning hole 31a, so that when the second connecting section drives the pin hole 20a to rotate to the front side of one of the positioning holes 31a, the pin hole 20a and the positioning hole 31a together form a through hole. When the positioning pin 32 extends into the through hole formed by the pin hole 20a and the positioning hole 31a, the drive handle 20 is fixed relative to the positioning hole plate 31 and cannot rotate, thus locking the locking part. When the positioning pin 32 disengages from the positioning hole 31a (it may not disengage from the pin hole 20a), the drive handle 20 can rotate relative to the positioning hole plate 31.

[0092] The locking part also includes a locating pin seat 33 and a first elastic element 34. The first elastic element 34 is a spring disposed within the accommodating space along the extending direction of the locating pin 32. The locating pin seat 33 is located on the front side of the locating hole plate 31 and extends in a direction perpendicular to the locating hole plate 31. The locating pin 32 includes a pin head 321 and a pin rod 322. The locating pin seat 33 has an accommodating space, and the pin rod 322 is movably disposed within the accommodating space along its own axial direction. The pin head 321 is located on the front side of the locating pin seat 33, so that during the rearward movement of the locating pin 32, the locating pin seat 33 can limit the position of the locating pin 32 along the axial direction of the locating pin 32. The locating pin seat 33 includes a cylindrical sidewall and an end wall. The end wall is disposed on the front side of the cylindrical sidewall and perpendicular to the cylindrical sidewall. The first end of the first elastic element 34 is fixedly connected to the end wall, and the second end of the first elastic element 34 is fixedly connected to the pin rod 322. The pin head 321 and the end wall are disposed opposite each other along the axial direction of the pin rod 322.

[0093] The locking handle 30 includes a first locking handle portion 301 and a second locking handle portion 302. The first locking handle portion 301 and the second locking handle portion 302 are arranged at an angle. The portion where the first locking handle portion 301 and the second locking handle portion 302 are connected is hinged to the drive handle 20.

[0094] like Figure 4 As shown, the locking handle 30 also includes a limiting plate 303, which is connected to the end of the second locking handle 302 near the positioning pin 32. In the locked state, the first locking handle 301 gradually tilts away from the connection point with the second locking handle 302 in a direction away from the positioning hole plate 31, and the second locking handle 302 extends in a direction parallel to the positioning hole plate 31. The limiting plate 303 overlaps with the front side of the first connecting section of the second drive handle 202.

[0095] When the first locking handle 301 rotates towards the side closer to the drive handle 20, the second locking handle 302 applies a pushing force to the pin head 321, causing it to move away from the positioning hole plate 31 and disengage from the positioning hole 31a along the direction of the pin rod 322, thus switching the locking part from the locked state to the unlocked state. When the first locking handle 301 rotates away from the drive handle 20, the end of the second locking handle 302 away from the first locking handle 301 moves towards the positioning hole plate 31 to remove the pushing force on the pin head 321. Under the action of the first elastic element 34, the pin head 321 moves towards the positioning hole 31a to extend into the positioning hole 31a, thus switching the locking part from the unlocked state to the locked state.

[0096] The following combination Figure 5 A dust removal apparatus according to another embodiment of the present disclosure will be described in detail.

[0097] like Figure 5As shown, the first drive handle portion 201 and the second drive handle portion 202 of the drive handle 20 are arranged at an angle. The second drive handle portion 202 is arranged parallel to the positioning hole plate 31, and the first drive handle portion 301 gradually tilts away from the positioning hole plate 31 from the connection point with the second drive handle portion 302. The locking part also includes a second elastic element 35. The second elastic element 35 is connected between the first locking handle 301 and the first drive handle portion 201, and is configured to apply a driving force to the first locking handle 301 and the first drive handle portion 201 to move them away from each other when the operator presses the first locking handle 301 and the first drive handle portion 201, and not apply force to the first locking handle 301 and the first drive handle portion 201 in the locked state.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. A dust removal device characterized by comprising: The dust removal device comprises: an air duct (100); an air door (1) rotatably arranged in the air duct (100) to adjust the flow of dust removal air flowing through the air duct (100); a driving handle (20) drivingly connected with the air door (1); and a locking portion having a locked state and a locked release state, in the locked state, the locking portion is configured to fix the driving handle (20) in a fixed position relative to the air duct (100), in the locked release state, the driving handle (20) is configured to be able to drive the air door (1) to rotate.

2. The dust removal device according to claim 1, wherein the locking portion comprises a positioning hole plate (31) fixedly connected to the outside of the air duct (100) and located between the driving handle (20) and the air duct (100), and a positioning pin (32), the positioning hole plate (31) comprises positioning holes (31a); the driving handle (20) comprises a pin hole (20a), in the locked state, the positioning pin (32) is configured to extend into the pin hole (20a) and the positioning hole (31a) to fix the driving handle (20) in a fixed position relative to the positioning hole plate (31), in the locked release state, the positioning pin (32) is configured to be disengaged from the positioning hole (31a) to enable the driving handle (20) to rotate relative to the positioning hole plate (31).

3. The dust extraction device of claim 2, wherein the positioning hole plate (31) comprises a plurality of positioning holes (31a), and the plurality of positioning holes (31a) are uniformly arranged in a circumferential direction.

4. The dust extraction device of claim 2, wherein the locking portion further comprises a positioning pin seat (33) located on a side of the positioning hole plate (31) away from the air duct (100) along an extension direction of the positioning hole (31a), and a first elastic element (34), the positioning pin seat (33) has a receiving space, the positioning pin (32) is movably arranged in the receiving space along an axial direction of the positioning pin (32), and the first elastic element (34) is configured to apply a force to the positioning pin (32) towards the positioning hole (31a).

5. The dust extraction device of claim 4, wherein the first elastic element (34) is arranged in the receiving space along the extension direction of the positioning pin (32), a first end of the first elastic element (34) is fixedly connected with the positioning pin seat (33), and a second end of the first elastic element (34) is fixedly connected with the positioning pin (32).

6. The dust extraction device of claim 2, wherein the locking portion further comprises a locking handle (30) rotatably connected to the driving handle (20) and configured to drive the positioning pin (32) to disengage from the positioning hole (31a) to switch the locking portion from the locked state to the locked release state.

7. The dust removal device according to claim 6, wherein the positioning pin (32) comprises a pin head (321) and a pin rod (322), the pin head (321) is connected to the pin rod (322) and located at an end of the pin rod (322) away from the positioning hole (31a). One end of the locking handle (30) is arranged abuttingly with one side of the pin head (321) connected with the pin rod (322) along the extension direction of the pin rod (322), and is configured to be able to drive the positioning pin (32) to disengage from the positioning hole (31a) by driving the pin head (321).

8. The dust removal device according to claim 7, characterized in that, The locking handle (30) comprises a first locking handle portion (301) and a second locking handle portion (302), the first locking handle portion (301) and the second locking handle portion (302) are arranged at an angle, and the connection part of the first locking handle portion (301) and the second locking handle portion (302) is hinged to the driving handle (20), in the locking state, the first locking handle portion (301) is gradually inclined away from the positioning hole plate (31) from the connection part with the second locking handle portion (302), the second locking handle portion (302) extends along a direction parallel to the positioning hole plate (31), and one end of the second locking handle portion (302) away from the first locking handle portion (301) is drivingly matched with the pin head (321); wherein, When the first locking handle portion (301) is configured to rotate towards the side close to the driving handle (20), the second locking handle portion (302) applies a pushing force to the pin head (321) to move the pin head (321) away from the positioning hole plate (31) along the extension direction of the pin rod (322) and disengage from the positioning hole (31a), and when the first locking handle portion (301) is configured to rotate away from the driving handle (20), one end of the second locking handle portion (302) away from the first locking handle portion (301) moves close to the positioning hole plate (31) to remove the pushing force on the pin head (321).

9. The dust removal device according to claim 8, characterized in that, The driving handle (20) comprises a first driving handle portion (201) and a second driving handle portion (202), the first driving handle portion (201) is arranged parallel to the positioning hole plate (31) and is rotatably connected with the locking handle (30), and the second driving handle portion (202) is a corner-shaped handle portion, the corner-shaped handle portion comprises a first connection segment and a second connection segment connected with each other and at an angle, the first connection segment is connected between the second connection segment and the first driving handle portion (201), the second connection segment is parallel to the positioning hole plate (31) and is closer to the positioning hole plate (31) than the first driving handle portion (201), wherein the second connection segment is drivingly connected with the damper (1), and the pin hole (20a) is arranged on the second connection segment; and / or The locking handle (30) comprises a limiting plate (303) connected to an end of the second locking handle (302) away from the first locking handle (301), and an end of the limiting plate (303) away from the second locking handle (302) abuts against the pin head (321).

10. The dust extraction device of claim 6, wherein, The locking part further comprises a second elastic element (35) connected between the locking handle (30) and the driving handle (20) and configured to apply a driving force to the locking handle (30) and the driving handle (20) to make them approach or move away from each other.

11. The dust extraction device of any one of claims 1-10, wherein, The transmission part is further provided between the air door (1) and the driving handle (20) and configured to transmit and amplify the torque of the driving handle (20) to the air door (1).

12. The dust removal device according to claim 11, characterized in that, The air door (1) comprises an air door shaft (10); The transmission part comprises a first gear (211) and a second gear (212), the first gear (211) and the second gear (212) are engaged, and the diameter of the first gear (211) is smaller than the diameter of the second gear (212), the driving handle (20) is drivingly connected with the first gear (211) and configured to drive the first gear (211) to rotate, and the second gear (212) is drivingly connected with the air door shaft (10) and configured to drive the air door shaft (10) to rotate.

13. A dust extraction system characterised in that, Comprise: A fan configured to provide the dust removal air flow; And The dust removal device according to any one of claims 1 to 12, the air pipe (100) communicates with the fan.

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