Scraper for centrifugal machine
By integrating cutting the crushing roller and driving components on the centrifuge scraper, the problem that existing scrapers cannot effectively cut the filter cake is solved, effectively crushing and beating the filter cake blocks is achieved, and the continuous stability of the production system is ensured.
Patent Information
- Application Number
- CN202420275605.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-05
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-02-05
AI Technical Summary
During the production process of alkaline magnesium carbonate, existing scrapers cannot effectively cut the residual filter cake on the inner wall of the drum when unloading, resulting in a large volume of the filter cake block, affecting the stable operation of subsequent beating processes.
A centrifuge scraper is designed, equipped with a cutting and crushing roller and a driving assembly. The cutting and crushing roller can cut and crush the material on the inner wall of the drum, and adjust the gap between the scraper and the inner wall of the drum through the driving assembly to reduce the filter cake block. volume.
By cutting the broken roller, the remaining material is cut into small pieces, which facilitates subsequent bag processing and slurry, ensuring the stable operation of the production system.
Smart Images
Figure CN222174450U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of basic magnesium carbonate production, in particular to a scraper for a centrifuge. Background Art
[0002] In the production process of basic magnesium carbonate, the core separation equipment needed is a scraper-assisted bag-pulling automatic unloading centrifuge. When the centrifuge is unloading, the scraper pre-scrapes the material on the drum.
[0003] When the existing scraper cleans the material on the centrifuge drum, after the scraper scrapes the material, the residual filter cake on the inner wall of the drum is thick, the filter bag is pulled into a cone, and the residual filter cake layer around the drum is circularly cut and crushed to form filter cake blocks. The filter cake blocks formed at this time are large in volume, and the filter cake blocks cannot be completely beaten into a slurry during the next process, affecting the stable operation of the production system. Utility Model Content
[0004] The utility model provides a scraper for a centrifuge, so as to achieve the technical effect of being able to cut the filter cake remaining around the drum into small pieces when the scraper is scraping materials.
[0005] The utility model provides a scraper for a centrifuge, which adopts the following technical solutions:
[0006] A scraper for a centrifuge comprises a scraper rod and a first scraper, wherein the first scraper is arranged at one end of the scraper rod, a first connecting plate is arranged on a side of the first scraper close to the scraper rod, and a crushing assembly is arranged on a side of the first scraper away from the first connecting plate;
[0007] The crushing assembly includes a second connecting plate and a cutting and crushing roller. A locking bolt is arranged on the second connecting plate. The locking bolt passes through the second connecting plate, the first scraper and the second connecting plate and is threadedly connected with a locking nut. A mounting plate is fixedly connected to the side of the second connecting plate away from the first scraper. The cutting and crushing roller is rotatably connected to the mounting plate. The cutting and crushing roller can cut the material remaining on the inner wall of the drum after being cleaned by the first scraper.
[0008] Furthermore, a connecting bolt is arranged at the center of the cutting and crushing roller, the connecting bolt passes through the cutting and crushing roller and the mounting plate and is threadedly connected with a connecting nut, the cutting and crushing roller can rotate along the axis of the connecting bolt, connecting holes are provided on the connecting nut and the connecting bolt, and a locking pin is provided in the connecting hole.
[0009] Furthermore, a connecting block is fixed to one end of the scraper rod away from the first connecting plate, and a second scraper is fixedly connected to the scraper rod. The second scraper is located on a side of the connecting block close to the first scraper. The first scraper and the second scraper clean the material on the inner wall of the drum simultaneously.
[0010] Furthermore, a driving assembly is provided inside the centrifuge to drive the connecting block to rotate so as to adjust the gap between the first scraper, the second scraper and the inner wall of the drum.
[0011] Furthermore, the driving assembly includes a supporting box body, a gear and a rack meshing with the gear are arranged inside the supporting box body, a rotating shaft fixed to the center position of the gear is arranged inside the supporting box body, one end of the rotating shaft extends out of the supporting box body and is fixed to the connecting block, and a driving cylinder for driving the rack to move is fixed on the outer wall of the supporting box body.
[0012] Compared with the prior art, the utility model has the following technical effects:
[0013] When the scraper of the utility model is used for scraping, the cutting and crushing roller can cut and crush the remaining materials, and then through the bag pulling process, the filter cake blocks with a small volume are formed, which is convenient for the next process to beat the filter cake blocks into a pulp. The gap between the scraper as a whole and the inner wall of the drum can be adjusted by the driving component, and the gap between the scraper as a whole and the inner wall of the drum can be appropriately reduced to reduce the volume of the formed filter cake blocks. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present invention, and do not constitute a limitation of the present invention. In the drawings:
[0015] Figure 1 To embody the overall structural schematic diagram of the utility model;
[0016] Figure 2 A schematic diagram showing a crushing assembly in the utility model;
[0017] Figure 3 A schematic diagram showing the cutting and crushing roller cutting the remaining material in the utility model;
[0018] Figure 4 A schematic diagram showing the support box and the driving cylinder in the utility model;
[0019] Figure 5 It is a schematic diagram of the drive assembly in the utility model.
[0020] Explanation of the reference numerals: 1. scraper rod; 11. first connecting plate; 12. connecting block; 2. first scraper; 3. crushing assembly; 31. second connecting plate; 32. mounting plate; 321. connecting rib plate; 33. locking bolt; 34. locking nut; 35. cutting and crushing roller; 36. connecting bolt; 37. connecting nut; 371. connecting hole; 372. locking pin; 4. driving assembly; 41. supporting box; 42. gear; 43. rack; 44. rotating shaft; 45. driving cylinder; 5. second scraper; 6. inner wall of the drum; 7. residual material on the inner wall of the drum. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the implementation mode and the accompanying drawings. Here, the schematic implementation mode of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.
[0022] Reference Figure 1 , Figure 2 and Figure 3 A centrifuge scraper includes a scraper rod 1, one end of the scraper rod 1 is connected to a first scraper 2, a first connecting plate 11 is provided on a side of the first scraper 2 close to the scraper rod 1, the first connecting plate 11 is fixed to the scraper rod 1, and a crushing assembly 3 is provided on a side of the first scraper 2 away from the scraper rod 1. The crushing assembly 3 can cut and crush the residual material on the inner wall 6 of the drum.
[0023] The crushing assembly 3 includes a second connecting plate 31, and two mounting plates 32 are fixedly connected to the side of the second connecting plate 31 away from the first scraper 2. The two mounting plates 32 are arranged in parallel and are respectively fixed to the two ends of the second connecting plate 31. A plurality of locking bolts 33 are arranged on the second connecting plate 31, and the plurality of locking bolts 33 are evenly arranged on the second connecting plate 31. The locking bolts 33 penetrate the second connecting plate 31, the first scraper 2 and the first connecting plate 11 and are threadedly connected with locking nuts 34, thereby fixing the first connecting plate 11, the first scraper 2 and the second connecting plate 31.
[0024] A cutting and crushing roller 35 is installed on the side of the two mounting plates 32 away from each other. A connecting bolt 36 is provided on the cutting and crushing roller 35. The connecting bolt 36 is located at the center of the cutting and crushing roller 35. The connecting bolt 36 passes through the cutting and crushing roller 35 and the mounting plate 32 and is threadedly connected with a connecting nut 37. The cutting and crushing roller 35 can rotate along the axis of the connecting bolt 36.
[0025] A connecting hole 371 is provided on the connecting nut 37 and the connecting bolt 36. A locking pin 372 is provided in the connecting hole 371. The locking pin 372 limits the relative rotation between the connecting nut 37 and the connecting bolt 36, so that the connecting nut 37 does not separate from the connecting nut 37 when the cutting and crushing roller 35 rotates.
[0026] A connecting rib plate 321 is fixed to the side of the two mounting plates 32 close to each other, and the top of the connecting rib plate 321 is fixed to the second connecting plate 31, and the connecting rib plate 321 increases the connection strength between the mounting plate 32 and the second connecting plate 31. A second scraper 5 is provided on the scraper rod 1, and the second scraper 5 is fixedly connected to the scraper rod 1. A connecting block 12 is fixedly connected to one end of the scraper rod 1 away from the first scraper 2, and the connecting block 12 is cylindrical.
[0027] When the scraper of the utility model is working, the first scraper 2 and the second scraper 5 scrape the material adhering to the inner wall 6 of the drum. After the first scraper 2 and the second scraper 5 finish scraping, the remaining material is cut and crushed by the cutting and crushing roller 35. Figure 3 The middle reference numeral 7 indicates the material remaining after the first scraper 2 and the second scraper 5 have completed scraping.
[0028] After the first scraper 2 and the second scraper 5 process the material, the remaining filter cake thickness is about 3mm. Finally, the bag is pulled. After the bag is pulled, the basic material block state is about 20*30*3mm. In the next process, the material can be effectively broken up into a slurry state to ensure continuous and stable production.
[0029] Reference Figure 4 and Figure 5 A driving assembly 4 for driving the connecting block 12 to rotate is disposed on one side of the connecting block 12, and a cylinder for driving the driving assembly 4 and the scraper to move up and down as a whole is disposed inside the centrifuge. The driving assembly 4 can drive the connecting block 12 to rotate, thereby driving the first scraper 2, the second scraper 5 and the cutting and crushing roller 35 to rotate, thereby adjusting the gap between the first scraper 2, the second scraper 5 and the cutting and crushing roller 35 and the inner wall 6 of the drum, so as to better clean the materials on the inner wall 6 of the drum.
[0030] The driving assembly 4 includes a supporting box 41, a gear 42 and a rack 43 are arranged inside the supporting box 41, the gear 42 is meshed with the rack 43, a rotating shaft 44 is arranged inside the supporting box 41, the rotating shaft 44 passes through the center position of the gear 42 and is fixed to the gear 42, a driving cylinder 45 is fixed outside the supporting box 41, the piston rod of the driving cylinder 45 is fixed to the rack 43, the driving cylinder 45 can drive the rack 43 to move, and the rack 43 drives the gear 42 to rotate.
[0031] One end of the rotating shaft 44 extends out of the supporting box 41 and is fixed to the connecting block 12. When the gear 42 rotates, the connecting block 12 rotates along with the rotating shaft 44, thereby adjusting the distance between the scraper as a whole and the inner wall 6 of the drum.
[0032] The implementation principle of the scraper for a centrifuge of the utility model is as follows: when scraping materials through the scraper, the rack 43 is driven to move by the driving cylinder 45, the rack 43 drives the gear 42 and the rotating shaft 44 to rotate, the rotating shaft 44 drives the connecting block 12 and the scraper rod 1 to rotate, the scraper rod 1 drives the first scraper 2, the second scraper 5 and the cutting and crushing roller 35 to rotate, so as to adjust the distance between the scraper as a whole and the inner wall 6 of the drum. After the adjustment is completed, when the drum rotates, the first scraper 2 and the second scraper 5 clean the materials on the inner wall 6 of the drum. After the first scraper 2 and the second scraper 5 clean the materials, the cutting and crushing roller 35 cuts and crushes the remaining materials on the inner wall 6 of the drum, and finally through the bag pulling process, the materials can be effectively broken into a slurry in the next process to ensure continuous and stable production.
[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims
1. A scraper for a centrifuge, comprising a scraper rod (1) and a first scraper (2), wherein the first scraper (2) is arranged at one end of the scraper rod (1), and characterized in that: A first connecting plate (11) is provided on a side of the first scraper (2) close to the scraper rod (1), and a crushing assembly (3) is provided on a side of the first scraper (2) away from the first connecting plate (11); The crushing assembly (3) comprises a second connecting plate (31) and a cutting and crushing roller (35). A locking bolt (33) is provided on the second connecting plate (31). The locking bolt (33) passes through the second connecting plate (31), the first scraper (2) and the second connecting plate (31) and is threadedly connected to a locking nut (34). A mounting plate (32) is fixedly connected to the side of the second connecting plate (31) away from the first scraper (2). The cutting and crushing roller (35) is rotatably connected to the mounting plate (32). The cutting and crushing roller (35) can cut the remaining material on the inner wall (6) of the drum after being cleaned by the first scraper (2).
2. The centrifuge scraper according to claim 1, characterized in that: A connecting bolt (36) is provided at the center of the cutting and crushing roller (35). The connecting bolt (36) penetrates the cutting and crushing roller (35) and the mounting plate (32) and is threadedly connected to a connecting nut (37). The cutting and crushing roller (35) can rotate along the axis of the connecting bolt (36). Both the connecting nut (37) and the connecting bolt (36) are provided with connecting holes (371), and a locking pin (372) is provided in the connecting hole (371).
3. The centrifuge scraper according to claim 1 or 2, characterized in that: A connection block (12) is fixed to one end of the scraper rod (1) away from the first connection plate (11); a second scraper (5) is fixedly connected to the scraper rod (1); the second scraper (5) is located on a side of the connection block (12) close to the first scraper (2); the first scraper (2) and the second scraper (5) simultaneously clean the material on the inner wall (6) of the drum.
4. The centrifuge scraper according to claim 1, characterized in that: A driving assembly (4) is provided inside the centrifuge for driving a connecting block (12) to rotate so as to adjust the gap between the first scraper (2) and the second scraper (5) and the inner wall (6) of the rotating drum.
5. The centrifuge scraper according to claim 1, characterized in that: The driving assembly (4) comprises a supporting box (41), a gear (42) and a rack (43) meshing with the gear (42) being arranged inside the supporting box (41), a rotating shaft (44) fixed at the center position of the gear (42) being arranged inside the supporting box (41), one end of the rotating shaft (44) extending out of the supporting box (41) and being fixed to the connecting block (12), and a driving cylinder (45) for driving the rack (43) to move being fixed on the outer wall of the supporting box (41).