A quick-change filter dust removal device for cement silos
By improving the structural design of the cement silo dust removal device, the phenomenon of dust passing through gaps has been reduced, achieving more efficient dust filtration and easy filter replacement. This solves the problems of dust pollution and difficult disassembly in the existing technology and extends the service life of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG ZHONGWEN CONCRETE CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-26
AI Technical Summary
The existing filter replacement structure of the cement silo dust removal device is prone to dust passing through the gaps, causing environmental pollution, and dust and impurities are easy to fall off during the disassembly process.
The design incorporates a dust removal vent pipe, mounting frame, filter screen, adjusting block, elastic membrane, and eccentric rod to reduce the gap between the mounting frame and the vent pipe. Components such as the operating rod, support frame, slider, and brush are used to pre-clean the dust at the bottom of the filter screen, improving sealing and cleaning efficiency.
It effectively reduces the phenomenon of dust not being filtered out through gaps, reduces environmental pollution, simplifies the replacement and maintenance process of filters, and extends the service life of the device.
Smart Images
Figure CN224270588U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cement storage technology, specifically a cement silo dust removal device with quick-change filter screen. Background Technology
[0002] A cement silo is a container used to store powdery materials such as cement. It is widely used in concrete mixing plants, construction sites, road and bridge projects, water conservancy projects and other fields.
[0003] When cement is being loaded into a cement silo, the air pressure inside the silo will be greater than the air pressure outside. At this time, some air will escape from the opening at the top of the cement silo. This air will also carry a large amount of dust generated during the loading process. Therefore, a dust removal device is installed at the opening at the top of the cement silo to reduce the pollution of the external environment caused by a large amount of dust. After a long period of operation, the filter screen in the dust removal device will accumulate a lot of dust and needs to be disassembled and replaced for maintenance.
[0004] Existing dust removal devices install the filter on a pull-out frame for quick disassembly and replacement. However, this structure can easily create gaps between the frame and the inner wall of the ventilation duct, allowing some dust and impurities to pass through without being filtered by the filter.
[0005] Therefore, this utility model provides a cement silo dust removal device with a quick-change filter screen. Utility Model Content
[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A quick-change filter screen dust removal device for cement silos, comprising a cement silo body; a dust removal ventilation pipe fixedly connected to the top of the cement silo body; an installation frame detachably installed in the middle of the dust removal ventilation pipe; a filter screen plate fixedly connected to the middle of the installation frame; a pair of adjusting blocks provided on the outer side wall of the installation frame; an eccentric rod fixedly connected to the side wall of the adjusting blocks; the eccentric rod rotatably connected to the middle of the installation frame; an elastic membrane fixedly connected to the side wall of the installation frame; a slot opened in the side wall of the installation frame; a mating strip fixedly connected to the inner side wall of the dust removal ventilation pipe; and a limiting component provided on the outer side wall of the dust removal ventilation pipe. Through the above structure, after the installation frame is inserted into the dust removal ventilation pipe, the gap between the installation frame and the dust removal ventilation pipe can be reduced, thereby reducing the occurrence of dust inside the cement silo passing through the gap and failing to be properly filtered by the filter screen plate.
[0008] Preferably, an operating rod is slidably connected to the middle of the mounting frame; a support frame is fixedly connected to one end of the operating rod inside the mounting frame; a pair of sliders are installed at the bottom of the support frame; a support strip is fixedly connected between the pair of sliders; and multiple brushes are fixedly connected to the top of the support strip. With the above structure, when the mounting frame needs to be disassembled for maintenance and replacement of the filter screen, the dust and impurities at the bottom of the filter screen can be cleaned in advance, reducing the impact of a large amount of dust and impurities falling off after the mounting frame leaves the dust removal vent pipe on the surrounding environment.
[0009] Preferably, the slider is slidably connected to the bottom of the support frame; a first elastic rope is fixed between the top of the slider and the support frame; a first fixing rod is fixed to the side wall of the slider; a track groove is provided on the inner side wall of the mounting frame; multiple square grooves are provided on the top of the track groove; a guide plate is rotatably connected to the middle of the square groove; a second fixing rod is fixed to the side wall of the support bar; through the above structure, the cleaning effect of dust and impurities attached to the bottom of the filter screen can be improved, and the pollution caused by dust and impurities to the external environment of the dust removal ventilation pipe can be further reduced.
[0010] Preferably, the limiting component includes a limiting sleeve; the limiting sleeve is slidably connected to the side wall of the dust removal vent pipe; the limiting sleeve is C-shaped; a second elastic rope is fixed between the limiting sleeve and the middle of the side wall of the dust removal vent pipe; with the above structure, the rotation restriction of the adjusting block and the sliding restriction of the mounting frame can be completed in just a few simple steps, making it difficult for the sealing between the mounting frame and the dust removal vent pipe to decrease. At the same time, it is convenient to use and has little impact on the disassembly speed of the mounting frame.
[0011] Preferably, a movable plate is slidably connected to the middle of the square groove; the guide plate is disposed through the middle of the movable plate; with the above structure, when the operating rod is pulled to clean the dust and impurities at the bottom of the filter screen, the occurrence of the first fixed rod getting stuck in the small groove at the top of the square groove and causing movement to be stuck can be reduced.
[0012] Preferably, an elastic pad is fixed to the bottom of the movable plate; the elastic pad is hollow; with the above structure, the impact on the first fixed rod can be buffered when the first fixed rod is repeatedly and rapidly impacted and collided, reducing the occurrence of bending deformation of the first fixed rod during long-term use.
[0013] Preferably, a roller is rotatably connected to the middle of the first fixed rod; the roller is disposed on the portion of the first fixed rod located inside the track groove; through the above structure, the sliding friction between the first fixed rod and other components can be transformed into rolling friction between the roller and other components, thereby reducing the wear of components and improving the service life of the device.
[0014] The beneficial effects of this utility model are as follows:
[0015] 1. The quick-change filter screen dust removal device for cement silos described in this utility model, through the arrangement of dust removal ventilation pipe, mounting frame, filter screen plate, adjusting block, elastic membrane, eccentric rod, slot, and mating strip, can reduce the gap between the mounting frame and the dust removal ventilation pipe after the mounting frame is installed inside the dust removal ventilation pipe, thereby reducing the occurrence of dust inside the cement silo passing through the gap and failing to be properly filtered by the filter screen plate.
[0016] 2. The quick-change filter screen dust removal device for cement silos described in this utility model, through the setting of operating rod, bearing frame, slider, bearing strip and brush, can clean the dust and impurities at the bottom of the filter screen in advance when the installation frame needs to be disassembled for maintenance and replacement, thereby reducing the impact of a large amount of dust and impurities falling off after the installation frame leaves the dust removal vent pipe on the surrounding environment. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings.
[0018] Figure 1 This is a perspective view of the present invention;
[0019] Figure 2 This is a schematic diagram of the mounting frame structure in this utility model;
[0020] Figure 3 This is a schematic diagram of the eccentric rod in this utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the support frame in this utility model;
[0022] Figure 5 This is a schematic diagram of the structure of the Chinese groove in this utility model.
[0023] In the diagram: 1. Cement silo body; 12. Dust removal and ventilation pipe; 13. Mounting frame; 14. Filter screen; 15. Adjusting block; 16. Elastic membrane; 17. Eccentric rod; 18. Slot; 19. Mating strip; 2. Operating lever; 21. Bearing frame; 22. Slider; 23. Bearing strip; 24. Brush; 3. First elastic rope; 31. First fixing rod; 32. Track groove; 33. Square groove; 34. Guide plate; 35. Second fixing rod; 4. Limit sleeve; 41. Second elastic rope; 5. Moving plate; 6. Elastic pad; 7. Roller. Detailed Implementation
[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0025] like Figures 1 to 3As shown in the figure, a quick-change filter screen dust removal device for a cement silo according to an embodiment of the present invention includes a cement silo body 1; a dust removal vent pipe 12 is fixedly connected to the top of the cement silo body 1; an installation frame 13 is detachably installed in the middle of the dust removal vent pipe 12; a filter screen plate 14 is fixedly connected to the middle of the installation frame 13; a pair of adjusting blocks 15 are provided on the outer side wall of the installation frame 13; an eccentric rod 17 is fixedly connected to the side wall of the adjusting block 15; the eccentric rod 17 is rotatably connected to the middle of the installation frame 13; An elastic membrane 16 is fixed to the side wall of the mounting frame 13; a slot 18 is provided on the side wall of the mounting frame 13; a mating strip 19 is fixed to the inner side wall of the dust removal vent pipe 12; a limiting component is provided on the outer side wall of the dust removal vent pipe 12; during operation, after the mounting frame 13 is inserted into the dust removal vent pipe 12, the mating strip 19 is inserted into the slot 18, thereby first tightly fitting one side of the mounting frame 13 with the dust removal vent pipe 12, and then rotating the adjusting block 15 drives the eccentric rod. As the eccentric rod 17 rotates, the portion of the eccentric rod 17 furthest from the axis gradually approaches the elastic membrane 16 and then squeezes the elastic membrane 16. The squeezed elastic membrane 16 adheres to the inner wall of the dust removal vent pipe 12, reducing the gap between the mounting frame 13 and the dust removal vent pipe 12 and making it difficult for dust inside the cement silo 1 to pass through. After completion, the limiting component is used to restrict the adjusting block 15, making it difficult for the mounting frame 13 to detach from the dust removal vent pipe 12. When the filter screen 14 needs to be replaced, the mounting frame 13 can be quickly removed by simply reversing the operation. Then, the filter screen 14 can be replaced and maintained. Through the above structure, after the mounting frame 13 is installed inside the dust removal vent pipe 12, the gap between the mounting frame 13 and the dust removal vent pipe 12 can be reduced, thereby reducing the occurrence of dust inside the cement silo 1 passing through the gap and failing to be properly filtered by the filter screen 14.
[0026] like Figures 1 to 5As shown, an operating rod 2 is slidably connected to the middle of the mounting frame 13; a support frame 21 is fixedly connected to one end of the operating rod 2 inside the mounting frame 13; a pair of sliders 22 are installed at the bottom of the support frame 21; a support strip 23 is fixedly connected between the pair of sliders 22; multiple brushes 24 are fixedly connected to the top of the support strip 23; during operation, over a long period of use, a large amount of dust and impurities will adhere to the bottom of the filter screen 14. These impurities are easily detached during the disassembly of the mounting frame 13, thereby polluting the external environment of the dust removal vent pipe 12. When disassembling the filter screen 14, the operating lever 2 can be pulled repeatedly to move the support frame 21 and the support bar 23, so that multiple brushes 24 can clean the bottom of the filter screen 14 and brush off some of the dust and impurities attached to the bottom of the filter screen 14 back into the cement silo 1. With the above structure, the dust and impurities at the bottom of the filter screen 14 can be cleaned in advance when the installation frame 13 needs to be disassembled to maintain and replace the filter screen 14, reducing the impact of a large amount of dust and impurities falling off after the installation frame 13 leaves the dust removal vent pipe 12 on the surrounding environment.
[0027] like Figures 1 to 5 As shown, slider 22 is slidably connected to the bottom of support frame 21; a first elastic rope 3 is fixed between the top of slider 22 and support frame 21; a first fixing rod 31 is fixed to the side wall of slider 22; a track groove 32 is opened on the inner side wall of mounting frame 13; multiple square grooves 33 are opened on the top of track groove 32; a guide plate 34 is rotatably connected to the middle of square groove 33; a second fixing rod 35 is fixed to the side wall of support bar 23; during operation, as the operating lever 2 is pulled to move support frame 21, the first fixing rod 31 will move synchronously inside track groove 32. At the same time, due to the pull of the first elastic rope 3 on slider 22, the first fixing rod 31 is tightly attached to the top of track groove 32. When the first fixing rod 31 passes through square groove 33, the first fixing rod 31 will rise rapidly under the pull of the first elastic rope 3, and then the second fixing rod 35 will hit the filter. The bottom of the screen plate 14 vibrates, causing the dust and impurities at the bottom of the screen plate 14 to be quickly shaken off. At this time, the first fixing rod 31 is at the top of the square groove 33 and continues to move. The first fixing rod 31 will push the guide plate 34 to rotate, causing the guide plate 34 to tilt and the bottom end of the guide plate 34 to move to the bottom edge of the square groove 33. The first fixing rod 31 will move along the tilted guide plate 34 and descend, and then return to the inside of the track groove 32. The above scenario is repeated repeatedly during the movement of the first fixing rod 31 along the track groove 32, so that the bottom of the screen plate 14 is repeatedly impacted and the impurities attached to the surface are continuously shaken off. Through the above structure, the cleaning effect of dust and impurities attached to the bottom of the screen plate 14 can be improved, and the pollution caused by dust and impurities to the external environment of the dust removal vent pipe 12 can be further reduced.
[0028] like Figures 1 to 3As shown, the limiting assembly includes a limiting sleeve 4; the limiting sleeve 4 is slidably connected to the side wall of the dust removal vent pipe 12; the limiting sleeve 4 is C-shaped; a second elastic rope 41 is fixed between the limiting sleeve 4 and the middle of the side wall of the dust removal vent pipe 12; during operation, after rotating the adjusting block 15 to compress the eccentric rod 17 against the elastic membrane 16, the limiting sleeve 4 is fitted onto the end of the adjusting block 15 under the elastic force of the second elastic rope 41, making it difficult for the adjusting block 15 to rotate, making it difficult for the eccentric rod 17 to rotate, causing the elastic membrane 16 to separate from the inner side wall of the dust removal vent pipe 12, and at the same time, the limiting sleeve 4 will... The mounting frame 13 is blocked, making it difficult for it to slide outward and causing the slot 18 to separate from the mating strip 19. When it is necessary to disassemble the mounting frame 13, simply slide the limiting sleeve 4 to separate the limiting sleeve 4 from the adjusting block 15, and then operate the adjusting block 15. With the above structure, the rotation restriction of the adjusting block 15 and the sliding restriction of the mounting frame 13 can be completed in just a few simple steps, making it difficult for the sealing between the mounting frame 13 and the dust removal vent pipe 12 to decrease. At the same time, it is convenient to use and has little impact on the disassembly speed of the mounting frame 13.
[0029] like Figure 5 As shown, a movable plate 5 is slidably connected to the middle of the square groove 33; a guide plate 34 is set through the middle of the movable plate 5; during operation, in order not to affect the movement of the first fixed rod 31, the top of the guide plate 34 needs to be placed in a small groove at the top of the square groove 33, so that the first fixed rod 31 will not be easily obstructed by the top of the guide plate 34 when moving. However, this may cause the first fixed rod 31 to get stuck in the small groove at the top of the square groove 33 when moving, resulting in a jam. With the setting of the movable plate 5, when the guide plate 34 rotates, the movable plate 5 will slide accordingly and separate the small groove at the top of the guide plate 34, making it difficult for the first fixed rod 31 to get stuck when moving. With the above structure, when the operating rod 2 is pulled to clean the dust and impurities at the bottom of the filter screen plate 14, the occurrence of the first fixed rod 31 getting stuck in the small groove at the top of the square groove 33 and causing a jam can be reduced.
[0030] like Figure 5 As shown, an elastic pad 6 is fixed to the bottom of the movable plate 5; the elastic pad 6 is hollow; during operation, when the first fixed rod 31 impacts the top of the square groove 33 due to the elastic force of the first elastic rope 3, the first fixed rod 31 will hit the bottom of the elastic pad 6. At this time, the elastic pad 6 will undergo elastic deformation and absorb part of the kinetic energy generated by the impact, thereby reducing the impact on the first fixed rod 31. Through the above structure, the impact on the first fixed rod 31 can be buffered when the first fixed rod 31 impacts upward repeatedly and collides, reducing the occurrence of bending deformation of the first fixed rod 31 during long-term use.
[0031] like Figure 5As shown, a roller 7 is rotatably connected to the middle of the first fixed rod 31; the roller 7 is disposed on the part of the first fixed rod 31 located inside the track groove 32; through the above structure, the sliding friction between the first fixed rod 31 and other components can be transformed into rolling friction between the roller 7 and other components, thereby reducing the wear of components and improving the service life of the device.
[0032] During operation, after the mounting frame 13 is inserted into the dust removal vent pipe 12, the mating strip 19 is inserted into the slot 18, thus first tightly fitting one side of the mounting frame 13 against the dust removal vent pipe 12. Then, rotating the adjusting block 15 drives the eccentric rod 17 to rotate. As the eccentric rod 17 rotates, the part of the eccentric rod 17 farther from the axis gradually moves closer to the elastic membrane 16, and then squeezes the elastic membrane 16. The squeezed elastic membrane 16 will fit against the inner wall of the dust removal vent pipe 12, making the gap between the mounting frame 13 and the dust removal vent pipe 12 smaller and making it difficult for dust inside the cement silo 1 to pass through. After completion, the limiting component is used to restrict the adjusting block 15, making it difficult for the mounting frame 13 to detach from the dust removal vent pipe 12. When it is necessary to filter... When replacing the filter screen 14, simply reverse the operation to quickly remove the mounting frame 13, and then replace and maintain the filter screen 14. During long-term use, a lot of dust and impurities will accumulate on the bottom of the filter screen 14. These impurities are easily detached during the disassembly of the mounting frame 13, thus polluting the external environment of the dust removal ventilation pipe 12. When it is necessary to disassemble the mounting frame 13, the operating lever 2 can be pulled repeatedly to move the support frame 21 and the support bar 23, so that multiple brushes 24 can clean the bottom of the filter screen 14, brushing off some of the dust and impurities attached to the bottom of the filter screen 14 back into the cement silo 1. As the operating lever 2 is pulled to move the support frame 21, the first fixing rod 31 will... The track groove 32 moves synchronously inside, and due to the pull of the first elastic rope 3 on the slider 22, the first fixing rod 31 is pressed tightly against the top of the track groove 32. When the first fixing rod 31 passes through the square groove 33, it will rise rapidly under the pull of the first elastic rope 3. Then, the second fixing rod 35 will hit the bottom of the filter screen 14, causing the filter screen 14 to vibrate, thereby quickly shaking off the dust and impurities at the bottom of the filter screen 14. At this time, the first fixing rod 31 is at the top of the inside of the square groove 33 and continues to move. The first fixing rod 31 will push the guide plate 34 to rotate, causing the guide plate 34 to tilt and the bottom end of the guide plate 34 to move to the bottom edge of the square groove 33. The first fixing rod 31 will move along the tilted guide plate 34. 4. The filter moves and descends, then returns to the track groove 32. During its movement along the track groove 32 after the first fixed rod 31, the above scenario is repeatedly repeated, causing the bottom of the filter screen 14 to be repeatedly impacted and continuously shaking off surface-attached impurities. After rotating the adjusting block 15 to compress the elastic membrane 16 with the eccentric rod 17, the limiting sleeve 4, under the elastic force of the second elastic rope 41, is fitted onto the end of the adjusting block 15, making it difficult for the adjusting block 15 to rotate. This makes it difficult for the eccentric rod 17 to rotate, causing the elastic membrane 16 to separate from the inner wall of the dust removal vent pipe 12. Simultaneously, the limiting sleeve 4 blocks the mounting frame 13, making it difficult for the mounting frame 13 to slide outwards, causing the slot 18 to separate from the mating strip 19. When it is necessary to disassemble the mounting frame 13...Simply slide the limiting sleeve 4 to separate it from the adjusting block 15, and then operate the adjusting block 15. To avoid affecting the movement of the first fixed rod 31, the top of the guide plate 34 needs to be placed in a small groove at the top of the square groove 33. This prevents the first fixed rod 31 from being easily obstructed by the top of the guide plate 34 during movement. However, this might cause the first fixed rod 31 to get stuck in the small groove at the top of the square groove 33 during movement. By setting the moving plate 5, when the guide plate 34 rotates, the moving plate 5 slides accordingly, separating the small groove at the top of the guide plate 34, making it difficult for the first fixed rod 31 to get stuck during movement. When the first fixed rod 31 impacts the top of the square groove 33 due to the elastic force of the first elastic rope 3, it will strike the bottom of the elastic pad 6. At this time, the elastic pad 6 will undergo elastic deformation and absorb some of the kinetic energy generated by the impact, reducing the impact on the first fixed rod 31.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A quick-change filter screen cement bin dust removal device, comprising a cement bin body (1); characterized in that: The top of the cement silo (1) is fixedly connected to a dust removal ventilation pipe (12); a mounting frame (13) is detachably installed in the middle of the dust removal ventilation pipe (12); a filter screen plate (14) is fixedly connected in the middle of the mounting frame (13); a pair of adjusting blocks (15) are provided on the outer side wall of the mounting frame (13); an eccentric rod (17) is fixedly connected to the side wall of the adjusting block (15); the eccentric rod (17) is rotatably connected to the middle of the mounting frame (13); an elastic membrane (16) is fixedly connected to the side wall of the mounting frame (13); a slot (18) is opened on the side wall of the mounting frame (13); a mating strip (19) is fixedly connected to the inner side wall of the dust removal ventilation pipe (12); and a limiting component is provided on the outer side wall of the dust removal ventilation pipe (12).
2. The cement silo dust extraction device of claim 1, wherein: An operating rod (2) is slidably connected to the middle of the mounting frame (13); a support frame (21) is fixedly connected to one end of the operating rod (2) inside the mounting frame (13); a pair of sliders (22) are installed at the bottom of the support frame (21); a support strip (23) is fixedly connected between the pair of sliders (22); and a plurality of brushes (24) are fixedly connected to the top of the support strip (23).
3. The cement silo dust extraction device of claim 2, wherein: The slider (22) is slidably connected to the bottom of the support frame (21); a first elastic rope (3) is fixed between the top of the slider (22) and the support frame (21); a first fixing rod (31) is fixed to the side wall of the slider (22); a track groove (32) is opened on the inner side wall of the mounting frame (13); a plurality of square grooves (33) are opened on the top of the track groove (32); a guide plate (34) is rotatably connected to the middle of the square groove (33); a second fixing rod (35) is fixed to the side wall of the support bar (23).
4. The cement silo dust extraction device of claim 1, wherein: The limiting component includes a limiting sleeve (4); the limiting sleeve (4) is slidably connected to the side wall of the dust removal vent pipe (12); the limiting sleeve (4) is C-shaped; a second elastic rope (41) is fixed between the limiting sleeve (4) and the middle of the side wall of the dust removal vent pipe (12).
5. A cement silo dust removal device with a quick-change filter screen according to claim 3, characterized in that: A movable plate (5) is slidably connected to the middle of the square groove (33); the guide plate (34) is disposed through the middle of the movable plate (5).
6. A cement silo dust removal device with a quick-change filter screen according to claim 5, characterized in that: An elastic pad (6) is fixed to the bottom of the movable plate (5); the elastic pad (6) is hollow.
7. A cement silo dust removal device with a quick-change filter screen according to claim 3, characterized in that: A roller (7) is rotatably connected to the middle of the first fixed rod (31); the roller (7) is located on the part of the first fixed rod (31) located inside the track groove (32).