A quick-change device for dust collector bags

Abstract

This utility model relates to the field of dust collector bag replacement and discloses a quick dust collector bag replacement device, including a lifting rod for hoisting the bag frame and a limiting frame. The limiting frame is equipped with a positioning device, and a flexible component connects the lifting rod and the positioning device. The length of the flexible component adapts to change. The limiting frame is detachably connected to the mounting plate via the positioning device. The positioning device is linked to the lifting rod via the flexible component, and the lifting rod is lifted relative to the limiting frame. Several hooks are provided at the bottom of the lifting rod, and several guide frames are slidably provided on the limiting frame. The lifting rod is lifted upward and the bag frame is pulled out from the mounting hole through the hooks. Several bag frames that are lifted out pass through the guide frames to prevent them from swinging and colliding during the lifting process, thus preventing damage. The flexible component drives the positioning device to disengage from the mounting plate, and the lifting rod drives the limiting frame to move upward. The limiting frame pulls the bag out from the mounting hole through the connecting hook, improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of dust collector bag replacement, specifically to a quick replacement device for dust collector bags. Background Technology

[0002] Dust collector bags are a type of high-efficiency filter material widely used in industrial production. They are mainly used to separate dust from dust-laden gas to achieve air purification and environmental protection. Chinese utility model patent CN208066043U discloses a structure to prevent bag detachment and a bag dust collector thereof, including a dust collector housing, a fixed mounting plate on the dust collector housing, and several mounting holes for installing bags on the mounting plate. Bags and bag frames are sequentially fitted into the mounting holes. Bag clips are provided on both sides of the mounting holes. The bag clips are used to snap the bags together, and the bag frames are used to press the bags firmly into the mounting holes. The mounting plate divides the dust collector housing into a cleaning chamber and a bag mounting chamber. Gas is blown from the cleaning chamber to the bag mounting chamber, and the bags are used to filter the gas.

[0003] Its working principle is based on the filtration capacity of the filter bag fiber fabric. It intercepts particulate matter in the air through the gaps between the fine fibers to achieve air purification. However, after long-term use, the filter bags of the waste heat boiler dust collector in the power workshop have problems such as perforation and clogging, which makes them unusable. This will directly affect the normal operation of the rotary kiln in the molding workshop and even lead to production stoppage. Therefore, the dust collector bags need to be replaced in time. However, the existing replacement method is to first pull the bag frame out of the installation hole and then pull out the bag. Moreover, it can only be pulled out one by one, which is inefficient. Utility Model Content

[0004] The present invention aims to provide a quick replacement device for dust collector bags to solve the problem of low efficiency in replacing dust collector bags.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a quick-change device for dust collector bags, including a lifting rod for hoisting the bag frame, and a limiting frame. The limiting frame is equipped with a positioning device, and a flexible component connects the lifting rod and the positioning device. The limiting frame is suspended below the lifting rod via the flexible component, and the length of the flexible component adapts automatically. The limiting frame is detachably connected to a mounting plate via the positioning device. The positioning device is linked to the lifting rod via the flexible component. The lifting rod is lifted relative to the limiting frame. When the lifting rod moves to its highest point relative to the limiting frame, the lifting rod drives the positioning device to gradually disengage from the mounting plate via the flexible component. Several hooks are provided at the bottom of the lifting rod, and several guide frames are slidably provided on the limiting frame. The number of guide frames is the same as the number of hooks. The guide frames are used for the bag frame to pass through and slide. A connecting hook for connecting the bag is fixed at the bottom of the guide frame.

[0006] The beneficial effects of this solution are as follows: the number of guide frames is equal to the number of hooks. Before replacement, the limiting frame is fixed to the mounting plate using a positioning device. Several mounting holes, equal in number to the number of guide frames, are aligned with the plate. The corresponding bag frames are then passed through the guide frames and connected to the hooks. Simultaneously, the top of the bag is connected to the connecting hook. The guide hook is fixedly set at the bottom of the guide frame, and the guide frame is vertically fixed relative to the limiting frame. Therefore, the suspension process is divided into two steps. The first step is to lift the boom upwards. At this time, the boom pulls the bag frames out of the mounting holes through the hooks. At the same time, several bag frames that have been lifted out pass through the guide frames. The guide frames guide the bag frames, preventing them from swinging and colliding during the lifting process, which could lead to damage.

[0007] Secondly, once the boom reaches its highest point relative to the limit frame, the flexible component drive positioning device disengages from the mounting plate, meaning the limit frame disengages from the mounting plate. The external equipment continues to drive the boom upward, which in turn moves the limit frame upward. The limit frame then pulls the cloth bag out of the mounting hole via a connecting hook. At this point, both the cloth bag frame and the cloth bag are pulled out, and several sets are pulled out simultaneously. Furthermore, the cloth bag frame and the cloth bag are pulled out separately. During later maintenance, the cloth bag and the cloth bag frame can be directly removed from the replacement device, which improves work efficiency compared to existing technologies.

[0008] Preferably, as an improvement, the limiting frame is equipped with a winding motor, the output end of the winding motor is provided with a winding reel, the limiting frame is rotatably provided with an active disc, and the flexible part is wound around the active disc and wound on the winding reel.

[0009] The beneficial effect is that when lifting is not required, the distance between the boom and the limit frame should be minimized. At this time, the winding motor will wind up the longer flexible part for the next extraction.

[0010] Preferably, as an improvement, the positioning device includes a guide block fixed to the bottom end of the limiting frame and a rotating cylinder rotatably disposed on the limiting frame at the top of the guide block. The rotating cylinder is slidably provided with a self-tapping screw. The guide block has a guide hole for the self-tapping screw to pass through. The rotating cylinder is used to drive the self-tapping screw to rotate. The rotating cylinder is linked with the flexible component. The bottom end of the self-tapping screw protrudes from the guide hole.

[0011] The beneficial effects are as follows: the bottom end of the self-tapping screw protrudes from the guide hole. Before installation, when the limit frame is placed on the mounting plate, the bottom end of the self-tapping screw is already against the mounting plate. The self-tapping screw is manually drilled into the mounting plate. When the lifting rod is lifted upward, the flexible part drives the rotating cylinder to rotate. The rotating cylinder drives the self-tapping screw to rotate and drill out of the mounting plate, thereby connecting the limit frame to the mounting plate.

[0012] Preferably, as an improvement, the flexible component is configured as a belt with toothed grooves, the drive disc is configured as a drive gear, the toothed grooves of the belt mesh with the drive gear, and the belt is used to drive the drive gear to rotate.

[0013] The beneficial effects are: the meshing method of belt and drive gear can achieve more precise power transmission, reduce energy loss, improve transmission efficiency, and at the same time achieve a more compact transmission structure, saving space.

[0014] Preferably, as an improvement, the limiting frame is provided with a driving wheel and a driven wheel. The diameter of the driving wheel is smaller than that of the driven wheel. The driving wheel and the driving gear are coaxially arranged. The driven wheel is coaxially arranged with a first bevel gear. The top of the rotating cylinder is provided with a second bevel gear. The first bevel gear and the second bevel gear mesh with each other.

[0015] The beneficial effects are as follows: the diameter of the driving wheel is smaller than that of the driven wheel, so the rotation speed of the driving wheel is greater than that of the driven wheel. In the same amount of time, the driving wheel rotates more times than the driven wheel. This is because, in practice, the change in belt length is consistent with the increase in the height of the boom, and the relative increase required between the boom and the limit frame is equal to the length of the bag frame. The belt drives the driving wheel to rotate, and through the radius design, the number of rotations of the driven wheel can be reduced, thereby shortening the length of the self-tapping screws and reducing costs in actual manufacturing and production.

[0016] Preferably, as an improvement, the self-tapping screw is slidably connected to the rotating cylinder on the same axis, the self-tapping screw is fixedly provided with a limit block, the rotating cylinder is provided with a limit groove for the limit block to slide, and a first spring is connected between the limit block and the limit groove.

[0017] The beneficial effects are as follows: the self-tapping screw is manually rotated and drilled into the mounting hole plate. Later, when the belt drives the rotating drum to rotate, the rotation of the rotating drum causes the self-tapping screw to rotate in the opposite direction. The self-tapping screw will be removed from the mounting hole plate when it rotates in the opposite direction. The first spring can make the whole removal process smooth and stable, and prevent the self-tapping screw from being damaged.

[0018] Preferably, as an improvement, the limiting frame has a sliding groove, a tensioning block is slidably arranged in the sliding groove, a second spring is connected between the tensioning block and the sliding groove, a tensioning wheel is rotatably arranged on the tensioning block, and the tensioning wheel is connected between the driving wheel and the driven wheel.

[0019] The beneficial effects are as follows: Under normal conditions, the second spring pushes the tension block to the appropriate position. At this time, the tension wheel, the driving wheel, and the driven wheel are all connected by a transmission belt. When it is necessary to manually drill the self-tapping screw into the mounting hole plate, the operator slides the tension block in the groove and compresses the second spring by squeezing it. After the second spring is compressed, the belt connection between the tension wheel, the driving wheel, and the driven wheel is disconnected. When the operator rotates the self-tapping screw, the self-tapping screw drives the rotating cylinder to rotate. The rotating cylinder drives the first bevel gear to rotate through the second bevel gear. Therefore, the first bevel gear drives the driven wheel to rotate. However, the belt connection between the driven wheel and the driving wheel is disconnected, so the driven wheel will not drive the driving wheel to rotate. Since the driving wheel does not rotate, it will not drive the belt to move.

[0020] Preferably, as an improvement, the limiting frame is connected to several buffer blocks, a third spring is connected between the buffer blocks, the guide frame is rotatably connected to the buffer blocks, and a torsion spring is connected between the guide frame and the buffer blocks.

[0021] The beneficial effects are as follows: A third spring is set between the buffer blocks, so the spacing between the buffer blocks can be changed according to the bag frames with different cross-sectional diameters. In addition, the guide frame is rotatably connected to the buffer blocks, and several bag frames are pulled out at the same time. At this time, the angle between each bag frame is also different. The guide frame can adapt to different angles, and the torsion spring can make the rotation of the bag frame more stable.

[0022] Preferably, as an improvement, the guide frame is slidably provided with a movable block, a fourth spring is connected between the movable block and the guide frame, and the movable block is provided with a rotating roller, which is used to contact the bag frame.

[0023] The beneficial effects are as follows: Similarly, depending on the diameter of the bag frame, the spacing between the moving blocks can be adaptively adjusted by the third spring. In addition, the rotating roller can make the bag frame smoother and more fluid during the entire guiding process, reducing friction and preventing frame deformation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0025] Figure 2 This is a cross-sectional view of the overall structure of an embodiment of the present utility model;

[0026] Figure 3 for Figure 2 Schematic diagram of a partial structure of the guide frame at point A;

[0027] Figure 4 This is a schematic cross-sectional view of the limiting frame according to an embodiment of the present utility model;

[0028] Figure 5 for Figure 4 Schematic diagram of a partial structure of the guide frame at point B;

[0029] Figure 6 This is a schematic diagram of the internal structure of the positioning device according to an embodiment of the present invention;

[0030] Figure 7 This is a cross-sectional structural diagram of the positioning device according to an embodiment of the present utility model. Detailed Implementation

[0031] The following detailed description illustrates the specific implementation method:

[0032] The reference numerals in the accompanying drawings include: boom 1, belt 11, hook 12, limit frame 2, buffer block 21, third spring 211, guide frame 212, connecting hook 2121, moving block 2122, fourth spring 2123, rotating roller 2124, torsion spring 213, winding motor 22, drive gear 23, drive wheel 24, driven wheel 25, first bevel gear 251, tension block 26, tension wheel 261, second spring 262, positioning device 3, guide block 31, guide hole 311, rotating cylinder 32, second bevel gear 321, limit groove 322, self-tapping screw 33, limit block 331, and first spring 332.

[0033] Example

[0034] The basic implementation examples are as follows: Figures 1-7 As shown, Figures 1-3 The dust collector bag quick replacement device shown includes a rod 1, with six hooks 12 fixedly installed at the bottom end of the rod 1. The six hooks 12 are welded and fixed to the bottom end of the rod 1 at equal intervals. Belts 11 are fixed on both sides of the rod 1. Limiting frames 2 are suspended from the bottom end of the rod 1 by the belts 11. The limiting frames 2 are hollow rectangular in shape, and buffer grooves are opened on the two inner sides of the long side of the limiting frames 2. Columnar guide shafts are fixedly welded in the buffer grooves. Six buffer blocks 21 are slidably arranged at equal intervals in the buffer grooves. A third spring 211 is connected between the six buffer blocks 21.

[0035] like Figures 3-5 As shown, buffer shafts are fixedly welded to opposite sides of the buffer blocks 21 on both sides. The buffer blocks 21 on both sides are rotatably connected to guide frames 212 through the buffer shafts. The guide frames 212 are also hollow rectangular. A torsion spring 213 is connected between the guide frames 212 and the buffer blocks 21 through the buffer shafts. Guide grooves are symmetrically opened on the two inner sides of the guide frames 212. A columnar guide shaft is also fixedly welded in the guide groove. Moving blocks 2122 are symmetrically slidably connected to both ends of the guide groove. The guide shaft in the guide groove passes through the moving blocks 2122. A fourth spring 2123 is connected between the moving blocks 2122 and the guide frames 212. A rotating roller 2124 is set between the two opposite moving blocks 2122. A connecting hook 2121 is fixedly welded to the bottom of the guide frames 212.

[0036] like Figures 6-7 As shown, positioning devices 3 are provided at the bottom ends of both sides of the limiting frame 2. Each positioning device 3 includes a housing fixedly welded to both sides of the limiting frame 2. A driving wheel 24, a driven wheel 25, and a tensioning wheel 261 are rotatably mounted on the housing. All three wheels are pulleys connected by a transmission belt. The diameter of the driving wheel 24 is smaller than that of the driven wheel 25. A groove is provided on the vertical surface of the limiting frame 2, and a tensioning block 26 is slidably connected within the groove. The tensioning wheel 261 is rotatably connected to the tensioning block 26. A second spring 262 is connected between the clamping block 26 and the slide groove. A drive gear 23 is coaxially rotatable on the limit frame 2 and the drive wheel 24. The belt 11 has a toothed groove. A winding motor 22 is installed on the side wall of the limit frame 2. A winding reel is coaxially arranged at the output end of the winding motor 22. A clutch is provided between the winding reel and the winding motor 22. A through hole is provided at the top of the housing for the belt 11 to pass through. The belt 11 passes through the through hole and is wound around the drive gear 23 and finally wound on the winding reel. The belt 11 meshes with the drive gear 23.

[0037] like Figures 6-7 As shown, a guide block 31 is fixedly welded to the bottom of the limiting frame 2 inside the housing. The guide block 31 has a guide hole 311. A mounting bracket is fixedly welded to the side wall of the limiting frame 2 at the top of the guide block 31. A rotating cylinder 32 is vertically rotatably connected to the mounting bracket. The rotating cylinder 32 is coaxially arranged with the guide hole 311. A self-tapping screw 33 is vertically and coaxially slidably connected inside the rotating cylinder 32. A limiting block 331 is fixedly installed on the self-tapping screw 33. The rotating cylinder 32 has a vertical opening for the limiting block 331 to be inserted. A first spring 332 is connected between the limiting block 331 and the limiting groove 322. A self-tapping screw 33 passes through the guide hole 311, with the bottom end of the self-tapping screw 33 protruding from the guide hole 311. The diameter of the guide hole 311 is larger than the diameter of the self-tapping screw 33. A first bevel gear 251 is coaxially arranged on the limiting frame 2 with the driven wheel 25. A second bevel gear 321 is coaxially arranged at the top of the rotating cylinder 32. The first bevel gear 251 and the second bevel gear 321 mesh with each other.

[0038] Its working principle is as follows: The boom 1 is lifted by an external suspension device. At this time, the boom 1 moves upward and simultaneously pulls the 6 bag frames out of the mounting holes. Under the guidance of the 6 guide frames 212, the 6 bag frames will not collide. During the process of the boom 1 rising relative to the limit block 331, the boom 1 drives the belt 11 to be pulled out from the winding reel, and with the first bevel gear 251 and the second bevel gear 321 driving the rotating drum 32 to rotate, the rotating drum 32 will slowly pull the self-tapping screw 33 out of the mounting hole. As the bag frame is fully extracted, the boom 1 continues to move the limit frame 2 upwards. The limit frame 2 rises and pulls the bag out together. At this time, the fully extracted bag is fixed to the limit frame 2 by the guide frame 212 without the bottom end, so it will not collide or get tangled in the air. At the same time, the bottom end of the limit frame 2 is connected to 6 corresponding bags, ensuring that the entire extraction process is carried out in batches, and the bag frame and bag are extracted at the same time. This improves the extraction efficiency and facilitates the subsequent classification and management.

[0039] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A dust collector bag quick replacement device, characterized in that: It includes a lifting rod for hoisting the bag frame, and a limiting frame. The limiting frame is equipped with a positioning device. A flexible component connects the lifting rod and the positioning device. The limiting frame is suspended below the lifting rod through the flexible component. The length of the flexible component changes adaptively. The limiting frame is detachably connected to the mounting plate via a positioning device. The positioning device is linked to the lifting rod via a flexible component. The lifting rod is lifted relative to the limiting frame. When the lifting rod moves to the highest point relative to the limiting frame, the lifting rod drives the positioning device to gradually disengage from the mounting plate via the flexible component. The bottom of the boom is equipped with several hooks, and the limit frame is slidably equipped with several guide frames. The number of guide frames is the same as the number of hooks. The guide frames are used for the bag frame to pass through and slide. The bottom of the guide frame is fixed with a connecting hook for connecting the bag.

2. The quick-change device for dust collector bags according to claim 1, characterized in that: The limit frame is equipped with a winding motor, and the output end of the winding motor is provided with a winding reel. The limit frame is rotatably equipped with a drive disc, and the flexible part is wound around the drive disc and wound on the winding reel.

3. The quick-change device for dust collector bags according to claim 2, characterized in that: The positioning device includes a guide block fixed to the bottom of the limiting frame and a rotating cylinder rotatably mounted on the limiting frame at the top of the guide block. A self-tapping screw is slidably mounted on the rotating cylinder. The guide block has a guide hole for the self-tapping screw to pass through. The rotating cylinder is used to drive the self-tapping screw to rotate. The rotating cylinder is linked with the flexible component. The bottom end of the self-tapping screw protrudes from the guide hole.

4. The quick-change device for dust collector bags according to claim 3, characterized in that: The flexible component is a belt with toothed grooves, and the drive disc is a drive gear. The toothed grooves of the belt mesh with the drive gear, and the belt is used to drive the drive gear to rotate.

5. The quick-change device for dust collector bags according to claim 4, characterized in that: The limit frame is equipped with a driving wheel and a driven wheel. The diameter of the driving wheel is smaller than that of the driven wheel. The driving wheel and the driving gear are coaxially arranged. The driven wheel is coaxially equipped with a first bevel gear. The top of the rotating cylinder is equipped with a second bevel gear. The first bevel gear and the second bevel gear mesh with each other.

6. The quick-change device for dust collector bags according to claim 5, characterized in that: The self-tapping screw is slidably connected to the rotating cylinder on the same axis. The self-tapping screw is fixedly provided with a limit block. The rotating cylinder has a limit groove for the limit block to slide. A first spring is connected between the limit block and the limit groove.

7. The quick-change device for dust collector bags according to claim 6, characterized in that: The limit frame has a sliding groove, and a tensioning block is slidably arranged in the sliding groove. A second spring is connected between the tensioning block and the sliding groove. A tensioning wheel is rotatably arranged on the tensioning block, and the tensioning wheel is connected between the driving wheel and the driven wheel.

8. The quick-change device for dust collector bags according to claim 1, characterized in that: The limit frame is connected to several buffer blocks, and a third spring is connected between the buffer blocks. The guide frame is rotatably connected to the buffer blocks, and a torsion spring is connected between the guide frame and the buffer blocks.

9. The quick-change device for dust collector bags according to claim 8, characterized in that: The guide frame is slidably equipped with a moving block, and a fourth spring is connected between the moving block and the guide frame. The moving block is equipped with a rotating roller, which is used to contact the bag frame.

Images