Flue gas dust treatment device

Abstract

According to the flue gas dust treatment device, through the telescopic folding design of the guide rod and the spiral blade, it is ensured that the sweeping assembly can conduct full-coverage sweeping in the area below the gas inlet pipe. The cyclone dust collector mainly comprises a cyclone dust collector body, a spiral guide rod, a driving mechanism, a cleaning assembly and a contraction mechanism. A telescopic pipe and a spiral blade of a spiral guide rod can axially stretch out and draw back, the lower end of the telescopic pipe is connected with a sweeping assembly, the spiral guide rod is driven by a driving mechanism to integrally rotate to drive the sweeping assembly to rotate, and a telescopic rod of the sweeping assembly stretches under the action of centrifugal force to sweep the inner wall face of a conical cylinder. Due to the fact that the sweeping assembly can move up and down and rotate along with the telescopic spiral guide rod, full-coverage sweeping of the area below the air inlet can be achieved, the retracting mechanism is directly connected with the lower end of the telescopic pipe through the hoisting mechanism and the pull rope so as to drive the telescopic pipe to retract, and the telescopic pipe extends downwards through elasticity and gravity of spiral blades during unwinding.

Description

Technical Field

[0001] This invention relates to a flue gas dust treatment device. Background Technology

[0002] Flue gas dust control mainly involves separating and collecting dust from high-temperature flue gas. One commonly used device is the cyclone dust collector, which separates dust-laden flue gas from dust by tangentially introducing it and using centrifugal force. However, after prolonged use, the inner wall of the cyclone dust collector accumulates a large amount of dust, affecting its subsequent dust removal efficiency. Manual cleaning of the inner wall is usually required, often involving workers using external materials. This cleaning process results in a significant amount of dust leaking out, impacting the surrounding environment. Furthermore, the dust can be inhaled by workers during the process, posing a health hazard.

[0003] To address this, Chinese invention patent CN115337713B, by inserting a movable rod that can move up and down inside a spiral guide rod, and setting a cleaning component at the lower end of the movable rod that can extend to contact the inner surface of the cyclone dust collector during rotation using centrifugal force, thus cleaning the dust adsorbed on the inner surface of the cyclone dust collector. However, because the spiral blades of the spiral guide rod are a fixed structure and occupy more than half of the height of the cyclone dust collector, and although the cleaning component can move up and down, it can only clean the area below the spiral guide rod, the area between the air inlet pipe and the spiral guide rod cannot be cleaned by the cleaning component and still requires manual cleaning. Since this solution does not completely solve the problem of cleaning dust on the inner surface of the cyclone dust collector, and due to the increased cost, users are unwilling to accept this solution and still use the traditional pure manual cleaning method, which hinders the development of this technology towards automation. Summary of the Invention

[0004] The purpose of this invention is to provide a flue gas dust treatment device, which, through the telescopic and foldable design of the guide rod and the spiral blade, ensures that the cleaning component can fully cover the area below the air inlet pipe for cleaning.

[0005] The technical solution of the present invention is as follows: A flue gas dust treatment device includes: The cyclone dust collector body includes a top plate and a cone, with an air inlet tangentially located at the top of the cone; The spiral guide rod, located inside the cyclone dust collector and on the central axis, includes a telescopic tube and spiral blades. The telescopic tube consists of multiple sleeves, each sleeve being axially displaced within a set range and circumferentially anti-rotationally engaged. The uppermost sleeve of the telescopic tube extends out from the top plate. The spiral blades are made of elastic metal sheets and have elastic force that extends axially. A clearance groove is provided at the central axis of the spiral blades to avoid the telescopic tubes. The upper and lower ends of the spiral blades are fixed to the outer surfaces of the uppermost and lowermost sleeves, respectively. Sliding sleeves are provided between the upper and lower ends of the spiral blades, corresponding to each sleeve. Each sliding sleeve can slide axially and rotate circumferentially outside the corresponding sleeve. The sliding sleeves are connected to the corresponding positions of the spiral blades. The drive mechanism includes a motor and a drive wheel driven by the motor, and also includes a driven wheel fixedly sleeved on the upper end of the uppermost section of the telescopic tube. The drive wheel and the driven wheel drive each other to drive the telescopic tube to rotate. The cleaning assembly is vertically fixed to the lower end of the lowest sleeve section to move up and down and rotate circumferentially with the telescopic tube. It includes a telescopic rod and a cleaning brush. The telescopic rod includes a fixed rod and a movable rod that are nested together. A tension spring is provided between the movable rod and the fixed rod. The cleaning brush is installed on the outer end of the movable rod. The retraction mechanism includes a winch mechanism and a pull rope. The winch mechanism is fixed to the top plate. The lower end of the pull rope passes through the inner hole of the telescopic tube and is fixedly connected to the lowest section of the sleeve. The upper end of the pull rope passes through the upper end of the telescopic tube and is connected to the winch mechanism.

[0006] Based on the above scheme, further improvements are made as follows: The inner wall of the clearance groove is provided with hinge holes corresponding to each sliding sleeve; a connecting rod is hinged to the outer surface of the sliding sleeve; and the outer end of the connecting rod is hinged within the hinge hole via a spherical structure. Since the deformation of the helical blade during extension and contraction is complex and may involve displacement in multiple directions, the spherical hinge structure can effectively compensate for these complex displacements, prevent stress generation, and ensure the stability of the connection structure.

[0007] Based on the above scheme, the following improvements are made: the winch mechanism includes a winch drum and a guide wheel, with the guide wheel positioned on the upper side of the upper end of the telescopic tube.

[0008] Based on the above scheme, the following improvements are made: the driving wheel and the driven wheel are sprockets, and the drive mechanism also includes a chain that drives between the driving wheel and the driven wheel.

[0009] Based on the above solution, further improvements are made as follows: the length of each section of the telescopic tube is less than the distance between the air inlet and the top plate. This arrangement ensures that the lower end of the retracted spiral guide rod is as close to the air inlet as possible, thus ensuring that the cleaning assembly is located near the air inlet and that the cleaning range is covered as wide as possible.

[0010] Based on the above solution, further improvements are made as follows: Multiple elastic balls are connected to the main body of the cleaning brush via elastic ropes to tap the inner surface of the cone. The elastic balls rotate with the cleaning brush. When the elastic balls contact the inner surface of the cone, due to their own elasticity and the elasticity of the elastic ropes, the elastic balls bounce on the inner wall of the cone, frequently tapping the inner wall, thereby shaking off some dust and improving the cleaning effect on the inner wall of the cone. Especially for dust that adheres and is solidified on the inner wall of the cone, which is difficult for the cleaning brush to clean thoroughly, the use of elastic balls allows for a more thorough cleaning.

[0011] Based on the above solution, further improvements are made as follows: the lower end of the pull rope is fixedly connected to the lowest section of the sleeve via a swivel joint. The swivel joint and the sleeve are in a circumferential rotational engagement and a vertical stop engagement. Since the telescopic tube will rotate relative to the pull rope, a swivel joint is used to compensate for the pull rope being twisted, preventing the rope from being twisted.

[0012] The beneficial effects of this invention are as follows: In use, the flue gas dust treatment device of this invention has its spiral guide rod normally folded upwards to minimize interference with airflow. When cleaning the inner wall of the cone is required, the spiral guide rod extends downwards through the unwinding of the retractable structure, utilizing the elasticity of the spiral blades and the gravity of the spiral guide rod and cleaning assembly. During this extension, the drive mechanism is activated to rotate the spiral guide rod, which in turn rotates the cleaning assembly. Under centrifugal force, the telescopic rod of the cleaning assembly extends, and the cleaning brush contacts the inner wall of the cone to achieve dust removal. During cleaning, air intake can be stopped at the air inlet, or air can be introduced into it for online cleaning. After cleaning is complete, the retractable mechanism's winch mechanism can be used to rewind the device. A pull rope pulls the lowest section of the telescopic tube upwards, causing the telescopic tube to fold up. During the extension and retraction of the telescopic tube, the two ends of the spiral blades are fixed to the two ends of the telescopic tube, while the portion between the two ends of the spiral blades slides in conjunction with the telescopic tube using sliding sleeves spaced at intervals. The sliding sleeves not only allow the spiral blades to automatically adjust their pitch but also their spiral angle. Furthermore, since each sliding sleeve is correspondingly located on each section of the tube, the extension and folding of the spiral blades are as uniform as possible. Because the spiral guide rod is telescopic, the cleaning assembly driven by its bottom has a large range of vertical movement, completely covering the inner wall of the cone below the air inlet. This achieves full-coverage cleaning of the cone's inner wall, minimizing the need for manual cleaning, saving time and labor, and enabling online cleaning. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of an embodiment of a flue gas dust treatment device according to the present invention. Figure 2 for Figure 1A magnified view of a section at point A in the middle; Figure 3 for Figure 2 A magnified view of a section at point B in the middle; Figure 4 for Figure 1 A magnified view of a section at point C; In the diagram: 1-Support frame, 2-Cyclone dust collector body, 21-Top plate, 22-Conical cylinder, 23-Air inlet, 24-Air outlet, 25-Dust outlet, 3-Spiral guide rod, 31-Telescopic pipe, 311-First stage sleeve, 312-Second stage sleeve, 313-Third stage sleeve, 314-Fourth stage sleeve, 315-Fifth stage sleeve, 32-Spiral blade, 321-Allowing groove, 33-Sliding sleeve, 34-Connecting rod. 4-Drive mechanism, 41-Motor, 42-Drive sprocket, 43-Chain, 44-Driven sprocket, 5-Sweeping assembly, 51-Telescopic rod, 511-Fixed rod, 512-Moving rod, 513-Tension spring, 52-Sweeping brush, 53-Elastic ball, 54-Elastic rope, 6-Winding mechanism, 61-Winding drum and winching motor, 62-Guide wheel, 63-Pull rope, 64-Rotary joint, 65-Annular groove and annular protrusion. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0016] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0017] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0018] An embodiment of the flue gas dust treatment device of the present invention: such as Figure 1 As shown, the flue gas dust treatment device includes a support frame 1, a cyclone dust collector body 2, a spiral guide rod 3, a drive mechanism 4, a cleaning assembly 5, and a hoisting mechanism 6.

[0019] like Figure 1 As shown, the cyclone dust collector body 2 includes a top plate 21 and a cone 22. The top plate 21 is a circular plate. The upper section of the cone 22 is cylindrical, the middle section is conical, and the lower section is cylindrical. The inner wall of the cone 22 is smooth. The upper part of the cone 22 is provided with an air inlet 23 along the tangential direction. The top plate 21 of the cone 22 is provided with an air outlet 24 eccentrically. The bottom of the main cylinder is a dust outlet 25.

[0020] like Figure 1As shown, the spiral guide rod 3 is located inside the cyclone dust collector body 2 and on the central axis, suspended from the top plate 21 at the central axis. It includes a telescopic tube 31 and a spiral blade 32. The telescopic tube 31 includes multiple sleeve sections. In this embodiment, it includes first to fifth stage sleeves 311-315. Each sleeve section can be axially displaced within a set range and is circumferentially anti-rotationally fitted. For example, adjacent sleeve sections are fitted with vertical grooves and sliders to achieve circumferential anti-rotation. The extreme positions are stopped by setting annular baffles at both ends of the sleeves to ensure that it can only move up and down within a limited range. The uppermost sleeve section of the telescopic tube 31 extends out from the top plate 21 and is correspondingly provided with a bearing structure that rotates with the top plate 21. The bearing structure can axially support the weight of the spiral guide rod 3 and the cleaning assembly 5. The helical blade 32 is made of an elastic metal sheet, such as a thin steel plate, and has an elastic force that extends axially. A clearance groove 321 is provided at the central axis of the helical blade 32 to avoid the telescopic tube 31. Viewed along the axial projection of the helical blade 32, the clearance groove 321 is circular. The upper and lower ends of the helical blade 32 are welded and fixed to the outer surfaces of the uppermost (first-stage sleeve 311) and lowermost (fifth-stage sleeve 315) sleeves, respectively. Sliding sleeves 33 are provided between the upper and lower ends of the helical blade 32, corresponding to each sleeve section. In this embodiment, five sliding sleeves 33 are provided. Each sliding sleeve 33 has the same outer diameter, and its inner diameter is consistent with the outer diameter of the corresponding sleeve. Each sliding sleeve 33 can slide axially and rotate circumferentially on the outer side of its corresponding sleeve. The sliding sleeve 33 is connected to the corresponding position of the helical blade 32. The specific structure is as follows... Figure 2 As shown, the inner wall of the clearance groove 321 has hinge holes corresponding to each sliding sleeve 33. A connecting rod 34 is hinged to the outer surface of the sliding sleeve 33. The outer end of the connecting rod 34 is hinged to the hinge hole through a spherical structure. That is, the hinge hole is a spherical hole, and its opening diameter is smaller than the diameter of the spherical hole. A spherical hinge joint is welded to the outer end of the connecting rod 34 and rotatably assembled in the hinge hole. Since the deformation mode of the spiral blade 32 during the extension and retraction process is relatively complex and may involve displacement in multiple directions, the use of a spherical hinge structure can effectively compensate for these complex displacements in all directions, prevent stress generation, and ensure the stability of the connection structure. The length of each section of the telescopic tube 31 is less than the distance between the air inlet 23 and the top plate 21. This setting ensures that the lower end of the retracted spiral guide rod 3 is as close as possible to the air inlet 23, that is, ensures that the cleaning assembly 5 is near the air inlet 23, and ensures that the cleaning range is covered as wide as possible.

[0021] like Figure 1As shown, the drive mechanism 4 includes a motor 41 and a drive wheel driven by the motor 41, and a driven wheel fixedly sleeved on the uppermost section of the telescopic tube 31. The drive wheel and the driven wheel drive each other to rotate the telescopic tube 31. In this embodiment, the drive wheel and the driven wheel are sprockets, namely a drive sprocket 42 and a driven sprocket 44. The drive mechanism 4 also includes a chain 43 that drives between the drive wheel and the driven wheel. In other embodiments, synchronous pulleys and synchronous belts, or gears, may also be used.

[0022] like Figure 2 As shown, this embodiment features two sets of cleaning components 5, symmetrically arranged. Each cleaning component 5 is vertically fixed to the lower end of the lowest sleeve section (i.e., the fifth-stage sleeve 315) to move up and down and rotate circumferentially with the telescopic tube 31. Each cleaning component 5 includes a telescopic rod 51 and a cleaning brush 52. The telescopic rod 51 includes a fixed rod 511 and a movable rod 512 nested together. A tension spring 513 is provided between the movable rod 512 and the fixed rod 511, sleeved on the movable rod 512, with its two ends connected to the fixed rod 511 and the movable rod 512 respectively. The cleaning brush 52 is installed on the outer end of the movable rod 512 and includes a main body and a bristle portion. Multiple elastic balls 53 are connected to the main body of the cleaning brush 52 via elastic ropes 54 to strike the inner surface of the cone 22. The elastic ball 53 can rotate with the sweeping brush 52. When the elastic ball 53 contacts the inner surface of the cone 22, due to its own elasticity and the elasticity of the elastic rope 54, the elastic ball 53 bounces on the inner wall of the cone 22, frequently knocking the inner wall of the cone 22, thereby shaking down some of the dust and improving the cleaning effect of the dust on the inner wall of the cone 22. Especially for dust that is adhered and solidified on the inner wall of the cone 22, the sweeping brush 52 has difficulty cleaning it clean, but with the elastic ball 53, it can be cleaned more thoroughly.

[0023] like Figure 1 , 2 As shown, the retraction mechanism includes a winch mechanism 6 and a pull rope 63. The winch mechanism 6 is fixed on the top plate 21 and includes a winch motor, a winch drum, and a guide wheel 62. The guide wheel 62 is located on the upper side of the upper end of the telescopic tube 31. The pull rope 63 is a steel wire rope. The lower end of the pull rope 63 passes through the inner hole of the telescopic tube 31 and is fixedly connected to the lowest section of the sleeve. The upper end of the pull rope 63 passes through the upper end of the telescopic tube 31 and is connected to the winch mechanism 6. In this embodiment, the lower end of the pull rope 63 is fixedly connected to the lowest section of the sleeve through a rotary joint 64. The rotary joint 64 and the sleeve are circumferentially rotated and vertically stopped. Since the telescopic tube 31 will rotate relative to the pull rope 63, the rotary joint 64 is provided to compensate for the pull rope 63 to prevent it from being twisted.

[0024] In use, the flue gas dust treatment device of the present invention has the spiral guide rod 3 normally folded upwards to minimize interference with airflow. When cleaning the inner wall of the cone 22 is required, the spiral guide rod 3 extends downwards by unwinding the retractable structure, utilizing the elasticity of the spiral blades 32 and the gravity of the spiral guide rod 3 and the cleaning assembly 5. During the extension process, the drive mechanism 4 is activated to drive the spiral guide rod 3 to rotate, which in turn drives the cleaning assembly 5 to rotate. Under the action of centrifugal force, the telescopic rod 51 of the cleaning assembly 5 extends, and the cleaning brush 52 contacts the inner wall of the cone 22 to achieve the dust removal function. During the cleaning process, air intake into the air inlet 23 can be stopped, or air can be introduced into it to achieve online cleaning. After cleaning is completed, the hoisting mechanism 6 of the retractable mechanism can be used to rewind the device. The lowermost section of the telescopic tube 31 is pulled upwards by the pull rope 63, causing the telescopic tube 31 to fold up and the spiral blades to retract together. During the extension and retraction of the telescopic tube 31, the two ends of the spiral blade 32 are fixed to the two ends of the telescopic tube 31, and the part between the two ends of the spiral blade 32 is slidably engaged with the telescopic tube 31 by means of sliding sleeves 33 set at intervals. The setting of the sliding sleeves 33 not only allows the spiral blade 32 to automatically adjust the pitch, but also allows the spiral blade 32 to automatically adjust the spiral angle. Moreover, since each sliding sleeve 33 is respectively set on each section of the tube, the extension and folding of the spiral blade 32 is as uniform as possible. Since the spiral guide rod 3 can extend and retract, the cleaning component 5 driven by its bottom has a relatively large range of movement in the vertical direction, which can completely cover the inner wall of the cone 22 corresponding to the area below the air inlet 23, achieving full coverage cleaning of the inner wall of the cone 22, thereby minimizing manual cleaning, saving time and labor, and enabling online cleaning.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A flue gas dust treatment device, comprising: The cyclone dust collector body includes a top plate and a cone, with an air inlet tangentially located at the top of the cone; Its characteristic is that it further includes: The spiral guide rod, located inside the cyclone dust collector and on the central axis, includes a telescopic tube and spiral blades. The telescopic tube consists of multiple sleeves, each sleeve being axially displaced within a set range and circumferentially anti-rotationally engaged. The uppermost sleeve of the telescopic tube extends out from the top plate. The spiral blades are made of elastic metal sheets and have elastic force that extends axially. A clearance groove is provided at the central axis of the spiral blades to avoid the telescopic tubes. The upper and lower ends of the spiral blades are fixed to the outer surfaces of the uppermost and lowermost sleeves, respectively. Sliding sleeves are provided between the upper and lower ends of the spiral blades, corresponding to each sleeve. Each sliding sleeve can slide axially and rotate circumferentially outside the corresponding sleeve. The sliding sleeves are connected to the corresponding positions of the spiral blades. The drive mechanism includes a motor and a drive wheel driven by the motor, and also includes a driven wheel fixedly sleeved on the upper end of the uppermost section of the telescopic tube. The drive wheel and the driven wheel drive each other to drive the telescopic tube to rotate. The cleaning assembly is vertically fixed to the lower end of the lowest sleeve section to move up and down and rotate circumferentially with the telescopic tube. It includes a telescopic rod and a cleaning brush. The telescopic rod includes a fixed rod and a movable rod that are nested together. A tension spring is provided between the movable rod and the fixed rod. The cleaning brush is installed on the outer end of the movable rod. The retraction mechanism includes a winch mechanism and a pull rope. The winch mechanism is fixed to the top plate. The lower end of the pull rope passes through the inner hole of the telescopic tube and is fixedly connected to the lowest section of the sleeve. The upper end of the pull rope passes through the upper end of the telescopic tube and is connected to the winch mechanism.

2. The flue gas dust treatment device according to claim 1, characterized in that, The inner wall of the clearance groove is provided with hinge holes corresponding to each sliding sleeve. A connecting rod is hinged to the outer surface of the sliding sleeve, and the outer end of the connecting rod is hinged in the hinge hole through a spherical structure.

3. The flue gas dust treatment device according to claim 1, characterized in that, The winch mechanism includes a winch drum and a guide wheel, which is located on the upper side of the upper end of the telescopic tube.

4. The flue gas dust treatment device according to claim 1, characterized in that, The driving wheel and driven wheel are sprockets, and the drive mechanism also includes a chain that drives between the driving wheel and driven wheel.

5. The flue gas dust treatment device according to claim 1, characterized in that, The length of each section of the telescopic pipe is less than the distance between the air inlet and the top plate.

6. The flue gas dust treatment device according to claim 1, characterized in that, The main body of the cleaning brush is connected to multiple elastic balls by elastic ropes to strike the inner surface of the cone.

7. The flue gas dust treatment device according to claim 1, characterized in that, The lower end of the pull rope is fixedly connected to the lowest section of the sleeve through a swivel joint. The swivel joint and the sleeve are engaged in circumferential rotation and in a blocking engagement in the vertical direction.

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