Rotary drum type grating crusher

Abstract

The utility model discloses a rotary drum type grating crusher and belongs to the field of rotary drum type crushers. The rotary drum type grating crusher comprises a rack box, one side of the rack box is of an opening structure, the side, close to the opening structure, of the rack box is provided with an inclined sealing edge, and one side of the upper surface of the rack box is fixedly provided with a speed reducer; a driving motor is fixedly mounted on the upper surface of the speed reducer, a milling cutter is fixedly mounted at the output end of one side of the driving motor, a blade is fixedly mounted on the outer arc surface of the milling cutter, and a drum grating net is movably connected to the side, away from the milling cutter, of the rack box through a rotating shaft; through the anti-falling cover and the annular connecting piece, the overall sealing performance and the structural strength of the shaft rod part are improved, the equipment failure risk caused by external impurity invasion or part looseness is reduced, stable operation of the rotary drum type grid crusher in a long-time and high-strength working environment is guaranteed, the service life of equipment is prolonged, the maintenance cost is reduced, and the service life of the rotary drum type grid crusher is prolonged. And the comprehensive performance of the equipment is powerfully improved.

Description

Technical Field

[0001] This utility model relates to the technical field of rotary drum crushers, specifically a rotary drum bar crusher. Background Technology

[0002] With the acceleration of urbanization and industrial development, the volume of sewage discharge is constantly increasing, highlighting the growing importance of sewage treatment. Sewage typically contains various solid impurities, such as plastic bags, wood blocks, fibers, rags, and empty bottles and cans. If these solid materials are not treated, they can cause blockages in sewers and sewage treatment equipment, affecting the normal operation of sewage treatment systems, reducing treatment efficiency, and even damaging equipment, increasing maintenance costs and repair difficulties. The rotary drum bar crusher was developed to meet the need for effectively removing solid impurities from sewage and protecting subsequent treatment facilities.

[0003] However, when crushing materials, the crusher's cutter shaft must withstand strong impact forces. This is due to the combined effects of the material's hardness, shape, and high-speed operation during the crushing process. Under such harsh working conditions, the round nut installed on the crusher's shaft head is easily affected and may become loose.

[0004] Therefore, this utility model provides a rotary drum bar crusher to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model provides a rotary drum bar crusher, which aims to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: It includes a frame housing, one side of which is open, and a beveled edge is provided on the side of the frame housing near the open structure. A reducer is fixedly installed on one side of the upper surface of the frame housing, and a drive motor is fixedly installed on the upper surface of the reducer. A milling cutter is fixedly installed at one output end of the drive motor, and a blade is fixedly installed on the outer arc surface of the milling cutter. A rotating drum grid is movably connected to the side of the frame housing away from the milling cutter via a rotating shaft. A shaft is penetratingly connected to the middle of the upper surface of the rotating drum grid. A guide plate is fixedly installed on the inner arc surface of the rotating drum grid. The inner arc surface of the guide plate has a concave arc segment, and the front end of the guide plate away from the concave arc segment has a convex arc segment. The inner arc surface of the concave arc segment corresponds to the outer arc surface of the rotating shaft.

[0009] As a preferred technical solution of this application, there are two guide plates, which are distributed relative to each other with the shaft as the center point. The two guide plates are distributed on both sides of the shaft. There are two milling cutters, and the blades on the surfaces of the two milling cutters are distributed crosswise.

[0010] As a preferred technical solution of this application, an outer labyrinth end cap is connected through the outer arc surface of the shaft near the top wall of the inner frame box. One side of the outer labyrinth end cap is provided with a protruding end, and an inner end cap is movably engaged with one side of the outer labyrinth end cap through the protruding end.

[0011] As a preferred technical solution of this application, the inner end cover is provided with an inner groove on the side near the outer labyrinth end cover, one end of the protruding end is movably engaged in the inner groove, and an anti-detachment cover is movably sleeved on the outer arc surface of the inner end cover, with a gap between the anti-detachment cover and the shaft.

[0012] As a preferred technical solution of this application, a bearing is movably sleeved in the gap between the anti-detachment cover and the shaft, one end of the anti-detachment cover is movably engaged with a limiting sleeve, and one side of the limiting sleeve is provided with an abutting end near the shaft, one end of the abutting end is attached to the surface of the bearing.

[0013] As a preferred technical solution of this application, a recessed groove is provided on one side surface of the limiting sleeve, and an annular connecting piece is provided on the surface of the limiting sleeve that fits into the recessed groove. A through hole is provided on one side of the annular connecting piece.

[0014] As a preferred technical solution of this application, one side of the limiting sleeve is provided with a through hole corresponding to the annular connecting piece, and a high-strength bolt is connected through the annular connecting piece near the through hole. One end of the high-strength bolt passes through to one side of the annular connecting piece and is fixedly installed on the limiting sleeve.

[0015] (III) Beneficial Effects

[0016] 1. The guide plate makes the process of material entering the rotary drum grid more efficient. After being processed by the guide plate, the material enters the subsequent crushing process in a more ideal state, which helps to improve the overall crushing efficiency and working performance of the rotary drum grid crusher.

[0017] 2. The anti-detachment cover and annular connecting piece improve the overall sealing and structural strength of the shaft, reduce the risk of equipment failure caused by external impurities or loose parts, ensure the stable operation of the rotary drum bar crusher under long-term, high-intensity working environment, extend the service life of the equipment, reduce maintenance costs, and effectively improve the overall performance of the equipment. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a rotary drum bar crusher;

[0019] Figure 2 A schematic diagram of the overall side view structure of a rotary drum bar crusher;

[0020] Figure 3 A top view and schematic diagram of the guide plate and shaft structure of a rotary drum bar crusher;

[0021] Figure 4 A schematic diagram of the overall disassembly structure of the outer labyrinth end cover and inner end cover of a rotary drum bar crusher;

[0022] Figure 5 A schematic diagram of the overall side view of the outer labyrinth end cover of a rotary drum bar crusher;

[0023] Figure 6 This is a partial structural diagram of the integral connection of the limiting sleeve of a rotary drum bar crusher.

[0024] In the picture:

[0025] 1. Frame housing; 101. Beveled edge sealing; 2. Reducer; 3. Drive motor; 4. Milling cutter; 401. Blade; 5. Rotary drum grille; 6. Shaft; 7. Guide plate; 701. Concave arc segment; 702. Convex arc segment; 8. Outer labyrinth end cap; 801. Protruding end; 9. Inner end cap; 10. Anti-detachment cap; 11. Bearing; 12. Limiting sleeve; 121. Abutment end; 13. Annular connecting piece; 14. High-strength bolt. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides a crusher, such as Figures 1 to 6As shown, the device includes a frame housing 1 with an open structure on one side. A beveled edge 101 is provided on the side of the frame housing 1 near the open structure. A reducer 2 is fixedly mounted on one side of the upper surface of the frame housing 1. A drive motor 3 is fixedly mounted on the upper surface of the reducer 2. A milling cutter 4 is fixedly mounted on the output end of one side of the drive motor 3. A cutting blade 401 is fixedly mounted on the outer arc surface of the milling cutter 4. A rotating drum grid 5 is movably connected to the side of the frame housing 1 away from the milling cutter 4 via a rotating shaft. A through-hole is formed in the middle of the upper surface of the rotating drum grid 5. A shaft 6 is connected to the inner arc surface of the rotating drum grid 5, and a guide plate 7 is fixedly installed thereon. The inner arc surface of the guide plate 7 is provided with a concave arc segment 701, and the front end of the guide plate 7 away from the concave arc segment 701 is provided with a convex arc segment 702. The inner arc surface of the concave arc segment 701 corresponds to the outer arc surface of the rotating shaft 6. There are two guide plates 7, which are distributed relative to each other with the shaft 6 as the center point. The two guide plates 7 are distributed on both sides of the shaft 6. There are two milling cutters 4, and the blades 401 on the surface of the two milling cutters 4 are distributed crosswise.

[0028] Under the guidance of the guide plate 7, the material flowing in from the feed pipe can change its flow direction very smoothly. Thanks to the structural design of the guide plate 7, the material remains stable during the turning process, without jamming or sedimentation, thus allowing it to enter the rotating drum grid 5 smoothly and without obstruction. This effectively prevents some material from being left outside the rotating drum due to its inability to enter the rotating drum grid 5, thereby eliminating the problem of material blockage caused by material residue. As a result, operators do not need to frequently handle the material accumulated outside the rotating drum grid 5, which reduces the frequency of equipment maintenance to a certain extent. Without affecting the normal use of the equipment, it significantly reduces equipment maintenance costs and improves the stability and continuity of equipment operation.

[0029] It is worth mentioning that the inner side of the guide plate 7 is provided with a concave arc section 701, and the front end is equipped with an outward convex arc section 702. This can accurately eliminate the dead space that may originally exist between the guide plates 7. When the material flows through these arc sections, its flow path is further optimized, and the material can be distributed more evenly, reducing the risk of local material accumulation. At the same time, the concave arc section 701 and the outward convex arc section 702 can also buffer and accelerate the material to a certain extent, making the process of the material entering the rotary drum grid 5 more efficient. The material after being processed by the guide plate 7 enters the subsequent crushing process in a more ideal state, which helps to improve the overall crushing efficiency and working performance of the rotary drum grid crusher.

[0030] An outer labyrinth end cover 8 is connected through the outer arc surface of the shaft 6 near the inner top wall of the frame housing 1. A protruding end 801 is provided on one side of the outer labyrinth end cover 8. An inner end cover 9 is movably engaged with the outer labyrinth end cover 8 via the protruding end 801. An inner groove is provided on the side of the inner end cover 9 near the outer labyrinth end cover 8. One end of the protruding end 801 is movably engaged into the inner groove. An anti-detachment cover 10 is movably sleeved on the outer arc surface of the inner end cover 9. A gap exists between the anti-detachment cover 10 and the shaft 6. A bearing 11 is movably sleeved within the gap between the anti-detachment cover 10 and the shaft 6. One end of the anti-detachment cover 10 is movably engaged with… A limiting sleeve 12 is provided. An abutment end 121 is provided on one side of the limiting sleeve 12 near the shaft 6. One end of the abutment end 121 is attached to the surface of the bearing 11. A recessed groove is provided on one side of the limiting sleeve 12. An annular connecting piece 13 is provided on the surface of the limiting sleeve 12 attached to the recessed groove. A through hole is provided on one side of the annular connecting piece 13. A corresponding through hole is provided on one side of the limiting sleeve 12. A high-strength bolt 14 is connected through the annular connecting piece 13 near the through hole. One end of the high-strength bolt 14 passes through to one side of the annular connecting piece 13 and is fixedly installed on the limiting sleeve 12.

[0031] An outer labyrinth end cap 8 is fitted onto the shaft 6. The outer labyrinth end cap 8 has a protruding end 801. During installation, the front end of the protruding end 801 can tightly engage and fit into the inner groove, thereby achieving installation with the inner end cap 9. During this installation process, the inner arc surface diameter of the anti-disengagement cover 10 is smaller than the top diameter of the inner end cap 9, so that the anti-disengagement cover 10 will abut against the outer labyrinth end cap 8 during the fitting process. At the same time, the edge of the anti-disengagement cover 10 has a groove, which allows the inner end cap 9 to enter smoothly and provides reliable protection after assembly.

[0032] On the other side of the anti-detachment cover 10, a limiting sleeve 12 is tightly fitted. The front abutting end 121 of the limiting sleeve 12 abuts against the inner surface of the anti-detachment cover 10, making it an integral structure. Regarding the high-strength bolts 14 used for connection, to ensure that the bolt strength is evenly distributed, an annular connecting piece 13 is installed on the same end of the bolts. The presence of the annular connecting piece 13 not only enhances the structural stability of the bolt connection but also effectively prevents bolt loosening or damage caused by uneven local stress. During long-term operation of the equipment, facing complex and changing working conditions and mechanical vibrations, the annular connecting piece 13 continuously plays a role, evenly distributing the stress borne by the high-strength bolts 14, further improving the reliability of the connection between the shaft 6 and related components, enhancing the overall sealing and structural strength of the shaft 6, reducing the risk of equipment failure caused by external impurities or component loosening, ensuring the stable operation of the rotary drum bar crusher under long-term, high-intensity working conditions, extending the service life of the equipment, reducing maintenance costs, and significantly improving the overall performance of the equipment.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A drum grate crusher comprising a frame box (1), characterized in that: The rack box (1) is open on one side, the rack box (1) is provided with a bevel edge (101) on the side close to the open structure, the upper surface of the rack box (1) is fixedly provided with a speed reducer (2), the upper surface of the speed reducer (2) is fixedly provided with a driving motor (3), the output end of the driving motor (3) is fixedly provided with a milling cutter (4), the outer arc surface of the milling cutter (4) is fixedly provided with a blade (401), the side away from the milling cutter (4) of the rack box (1) is movably connected with a rotating drum grille net (5) through a rotating shaft, the upper surface of the rotating drum grille net (5) is movably connected with a shaft rod (6), the inner arc surface of the rotating drum grille net (5) is fixedly provided with a guide vane (7), the inner arc surface of the guide vane (7) is provided with an inner concave arc segment (701), the front end of the guide vane (7) away from the inner concave arc segment (701) is provided with an outer convex arc segment (702), and the inner arc surface of the inner concave arc segment (701) corresponds to the outer arc surface of the rotating shaft rod (6).

2. A rotary drum grate crusher as claimed in claim 1, wherein: The number of the guide vanes (7) is two, and the two guide vanes (7) are oppositely distributed with the shaft rod (6) as the center, the two guide vanes (7) are distributed on the two sides of the shaft rod (6), and the number of the milling cutters (4) is two, and the blades (401) on the surfaces of the two milling cutters (4) are cross-distributed.

3. A rotary drum grizzly breaker according to claim 2, characterised in that: The outer arc surface of the shaft rod (6) is movably connected with an outer labyrinth end cover (8) at the position close to the inner top wall of the rack box (1), one side of the outer labyrinth end cover (8) is provided with a protruding end (801), and the outer labyrinth end cover (8) is movably connected with an inner end cover (9) through the protruding end (801).

4. A drum grate crusher as claimed in claim 3, wherein: The inner end cover (9) is provided with an inner groove on the side close to the outer labyrinth end cover (8), one end of the protruding end (801) is movably connected into the inner groove, the outer arc surface of the inner end cover (9) is movably sleeved with an anti-disengagement cover (10), and a gap is formed between the anti-disengagement cover (10) and the shaft rod (6).

5. A rotary drum grizzly breaker according to claim 4, characterised in that: The gap between the anti-disengagement cover (10) and the shaft rod (6) is movably sleeved with a bearing (11), one end of the anti-disengagement cover (10) is movably connected with a limiting sleeve (12), and the side of the limiting sleeve (12) close to the shaft rod (6) is provided with an abutting end (121).

6. A rotary drum grizzly breaker according to claim 5, characterised in that: The side surface of the limiting sleeve (12) is provided with a recessed groove, the surface of the limiting sleeve (12) close to the recessed groove is provided with an annular connecting piece (13), and the side of the annular connecting piece (13) is provided with a through hole.

7. A rotary drum grizzly breaker according to claim 6, characterised in that: The side of the limiting sleeve (12) is provided with a through hole corresponding to the annular connecting piece (13), the annular connecting piece (13) is movably connected with a high-strength bolt (14) at the position close to the through hole, and one end of the high-strength bolt (14) penetrates to the side of the annular connecting piece (13) and is fixedly connected to the limiting sleeve (12).

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