Crusher convenient for replacing cutter

Abstract

The utility model relates to the technical field of crushing treatment, in particular to a crusher convenient for cutter replacement, which comprises a shell, the shell is provided with a crushing cavity with an opening at the upper end, the shell has a first direction and a second direction which are horizontal and perpendicular to each other, and the crushing cavity is provided with a mounting seat along the center of the first direction. Crushing rollers are arranged on the two sides, in the first direction, of the mounting base correspondingly, the axial direction of the crushing rollers is parallel to the second direction, a plurality of crushing cutters are arranged on the crushing rollers, a plurality of crushing teeth are arranged on the mounting base, and the crushing cutters and the crushing teeth are arranged in a staggered mode in the second direction; the crushing roller further comprises a rotating shaft and ring sleeves, the multiple ring sleeves are sequentially arranged on the outer ring of the rotating shaft in a sleeving mode in the axial direction of the rotating shaft, the end faces of the adjacent ring sleeves abut against each other, and limiting pieces are arranged on the inner rings of the ring sleeves and the outer ring of the rotating shaft and used for limiting mutual rotation of the rotating shaft and the ring sleeves. A plurality of ring sleeve pairs are arranged on the outer ring of the rotating shaft, the crushing cutters on each pair of ring sleeves stretch across the two ring sleeves through cutter holders, and the cutter holders are welded to the peripheries of the two ring sleeves respectively.

Description

Technical Field

[0001] This utility model relates to the field of crushing and processing technology, and in particular to a crusher that is easy to replace with cutting tools. Background Technology

[0002] After collection, municipal waste needs to be dumped into a crusher for crushing. The crushed waste has a particle size smaller than a set value to form waste pellets. The smaller waste pellets are then compressed into larger waste blocks. These waste blocks can be transported to biomass power plants for incineration and power generation, or the biodegradable waste blocks can be landfilled.

[0003] In related technical solutions, the crusher has paired crushing rollers with crushing blades on them. The crushing blades on the two crushing rollers mesh with each other, and the waste is crushed between the two crushing rollers before falling. Alternatively, the crusher has a mounting base with crushing teeth on both sides. The upper ends of the crushing blades rotate towards the mounting base, and the waste is crushed between the crushing rollers and the mounting base.

[0004] However, in some technical solutions, multiple cutter holders are welded to the surface of the crushing roller, and cutter heads are fixed on the cutter holders. The cutter heads are welded to the cutter holders or connected by bolts. Even if the cutter heads are fixed to the cutter holders by bolts, the bolts here are prone to rust and are difficult to remove after long-term use.

[0005] In other words, when the crushing blades on the crushing roller are damaged, it is not easy to repair or replace them quickly, which affects the processing efficiency of the waste crusher. Utility Model Content

[0006] This invention provides a crusher with easily replaceable blades, which can at least solve one of the above-mentioned technical problems.

[0007] To solve the above-mentioned technical problems, one or more embodiments of this utility model provide a crusher that facilitates the replacement of cutting tools, including a shell, the shell having a crushing chamber with an open upper end, the shell having a first direction and a second direction that are horizontal and perpendicular to each other, a mounting seat is provided at the center of the crushing chamber along the first direction, crushing rollers are respectively provided on both sides of the mounting seat along the first direction, the axial direction of the crushing rollers is parallel to the second direction, a plurality of crushing blades are provided on the crushing rollers, a plurality of crushing teeth are provided on the mounting seat, and the crushing blades and crushing teeth are staggered along the second direction.

[0008] The crushing roller also includes a rotating shaft and ring sleeves. Multiple ring sleeves are sequentially fitted onto the outer ring of the rotating shaft along its axial direction, with the end faces of adjacent ring sleeves abutting each other. Limiting elements are provided between the inner ring of the ring sleeves and the outer ring of the rotating shaft to restrict the mutual rotation of the rotating shaft and the ring sleeves. The outer ring of the rotating shaft has multiple pairs of ring sleeves, and the crushing blades on each pair of ring sleeves span two ring sleeves via blade holders. The blade holders are welded to the outer circumference of the two ring sleeves respectively.

[0009] The one or more technical solutions have the beneficial effects that:

[0010] In the scheme, the crushing roller comprises a rotating shaft and a ring sleeve, a limiting piece is arranged between the rotating shaft and the ring sleeve to limit mutual rotation of the rotating shaft and the ring sleeve, and a crushing blade is arranged on the ring sleeve.

[0011] In the scheme, the crushing blades on each pair of ring sleeves cross the two ring sleeves through a blade seat, and the blade seat is welded to the outer periphery of the two ring sleeves. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a schematic view of an overall structure in the embodiment of the utility model;

[0013] Figure 2 is a schematic view of a shaft side of the crushing roller in the embodiment of the utility model;

[0014] Figure 3 is a schematic view of a side of the crushing roller in the embodiment of the utility model;

[0015] Figure 4 is a schematic view of an inside after removing a part of structure of a shell in the embodiment of the utility model. DETAILED DESCRIPTION

[0016] To clearly illustrate the technical features of the scheme, the utility model is described in detail below through specific implementation manners and in combination with the accompanying drawings.

[0017] It should be pointed out that the present application only relates to improvement of the bottom end of the crusher tank for facilitating replacement of the cutter, and the specific purification principle and other structure of the crusher for facilitating replacement of the cutter are not improved, which can be set by the person skilled in the art.

[0018] Reference should be made to Figures 1-4A typical embodiment of this utility model provides a crusher with easy-to-change blades, including a housing 1. The housing 1 has a crushing chamber 5 with an open upper end. The housing 1 has a first direction and a second direction that are horizontal and perpendicular to each other. A mounting seat 2 is provided at the center of the crushing chamber 5 along the first direction. Crushing rollers 4 are respectively arranged on both sides of the mounting seat 2 along the first direction. The axial direction of the crushing rollers 4 is parallel to the second direction. Multiple crushing blades 7 are provided on the crushing rollers 4. Multiple crushing teeth 3 are provided on the mounting seat 2. The crushing blades 7 and crushing teeth 3 are staggered along the second direction. The crushing rollers 4 also include a rotating shaft 8 and ring sleeves 9. Multiple ring sleeves 9 are sequentially sleeved on the outer ring of the rotating shaft 8 along the axial direction of the rotating shaft 8. The end faces of adjacent ring sleeves 9 abut against each other. The inner ring of the ring sleeve 9 and the outer ring of the rotating shaft 8 are provided with limiting members to restrict the mutual rotation of the rotating shaft 8 and the ring sleeves 9. The outer ring of the rotating shaft 8 has multiple pairs of ring sleeves 9. The crushing blades 7 on each pair of ring sleeves 9 span two ring sleeves 9 through a blade holder. The blade holder is welded to the outer periphery of each of the two ring sleeves 9.

[0019] Specifically, the outer casing 1 includes two side plates perpendicular to the first direction and two end plates perpendicular to the second direction. The shaft 8 of the crushing roller 4 is rotatably mounted in the crushing chamber 5 of the outer casing 1 via the end plates. More specifically, one end of the crushing roller 4 forms a drive end, which extends out of the outer casing 1 along the second direction to facilitate connection with a rotary power source via a sprocket chain or pulley assembly.

[0020] In this embodiment, the two ends of the rotating shaft 8 have threaded sections, and the threaded ends are connected to the stop plate 6 by threads.

[0021] Specifically, the two ends of the rotating shaft 8 are threaded sections, and a smooth shaft section is formed in the middle of the two threaded ends. The outer diameter of the smooth shaft section is larger than the outer diameter of the threaded section. At this time, the inner diameter of the ring 9 that mates with the smooth shaft section is larger than the outer diameter of the threaded section. In this case, the setting of the threaded section does not affect the installation and removal of the ring 9 on the rotating shaft 8.

[0022] Specifically, to achieve the limiting of the rotating shaft 8 and the ring 9, a limiting groove 801 is provided on the outer circumference of the rotating shaft 8, and a limiting protrusion 901 is provided on the inner circumference of the ring 9. There are two limiting grooves 801 and two limiting protrusions 901, arranged symmetrically along the outer circumference of the rotating shaft 8 and symmetrically along the inner circumference of the ring 9. In one specific structural form, the cross-section of the limiting groove 801 and the limiting protrusion 901 is square. In other embodiments, the cross-section can be trapezoidal, semi-circular, or other shapes.

[0023] In this embodiment, the inner wall surface of the ring 9 is provided with a slot (not shown in the figure), which is used to connect with the hook of an external device.

[0024] As one specific structural form, the slot here is a square slot, which is recessed into the inner wall of the ring 9. In other embodiments, the slot can also be circular or semi-circular, which can be designed by those skilled in the art.

[0025] In this embodiment, each crushing roller 4 has multiple rows of crushing blades 7 on its exterior, and each row of crushing blades 7 is spirally arranged along the outer surface of the crushing roller 4.

[0026] Specifically, the helix angles of the multiple rows of crushing blades 7 outside the crushing roller 4 are the same, thus making the spacing between adjacent rows of crushing blades 7 a constant value.

[0027] In this embodiment, the crushing blade 7 is connected to the blade holder by bolts. In other embodiments, the crushing blade 7 and the blade holder can also be fixed by welding.

[0028] In this embodiment, the lower end of the outer casing 1 is open, and a filter screen 12 is installed at the open end. The filter screen 12 is detachably set from the frame and / or the distance between the filter screen 12 and the crushing roller 4 can be adjusted.

[0029] As one specific form of the result, the filter screen 12 has an arc-shaped structure, with its inner arc side facing the crushing roller 4. One end of the filter screen 12 along its own arc direction is rotatably connected to the mounting base 2, and the other end is rotatably connected to the piston rod of the hydraulic cylinder 11. The cylinder body of the hydraulic cylinder 11 is inclined upward and rotatably connected to the inner wall of the machine housing. The extension and retraction of the hydraulic cylinder 11 can drive the filter screen 12 to rotate relative to the mounting base 2, thereby allowing the filter screen 12 to adjust the distance between itself and the crushing roller 4.

[0030] More specifically, a filter screen 12 is provided below each crushing roller 4, and the filter screen 12 is coaxially arranged with the crushing roller 4.

[0031] Working principle: When the crushing blades 7 on the crushing roller 4 are damaged, the user determines whether the number of damaged crushing blades 7 requires repair. If the number of damaged crushing blades 7 is too large and affects the normal operation of the entire crusher, the entire crushing roller 4 can be removed.

[0032] The crushing roller 4, which has been removed from the outer casing 1, is further removed so that the ring sleeve 9 and the crushing blade 7 on the ring sleeve 9 are detached from the rotating shaft 8. The damaged crushing blade 7 and the ring sleeve 9 are placed to one side. The new ring sleeve 9 and the original undamaged crushing blade 7 are assembled and reassembled onto the rotating shaft 8. Finally, the crushing roller 4 is installed back into the crushing chamber 5 of the crusher.

[0033] For the disassembled broken cutting tool 7 and ring sleeve 9 pair, the welding structure between the cutting tool holder and the ring sleeve 9 is destroyed during the separation process by hammering the tool holder, driving wedges into the adjacent gaps of the ring sleeve 9 pair, or pulling radially with a lathe.

[0034] When the two sleeves 9 of the sleeve 9 pair are separated from each other and the welding structure between the sleeve 9 and the tool seat is removed, the end faces of the two sleeves 9 are re-aligned, and then a new tool seat is welded again.

[0035] The specific embodiments described above cannot be used as a limitation on the protection scope of the utility model, and any alternative improvement or transformation made by the skilled in the art to the embodiments of the utility model falls within the protection scope of the utility model.

[0036] The details not described in the utility model are known to the skilled in the art.

Claims

1. A crusher with easily replaceable blades, characterized in that, The device includes a housing with an open crushing chamber at the top. The housing has a first direction and a second direction that are horizontal and perpendicular to each other. A mounting seat is provided at the center of the crushing chamber along the first direction. Crushing rollers are respectively provided on both sides of the mounting seat along the first direction. The axial direction of the crushing rollers is parallel to the second direction. Multiple crushing blades are provided on the crushing rollers. Multiple crushing teeth are provided on the mounting seat. The crushing blades and crushing teeth are staggered along the second direction. The crushing roller also includes a rotating shaft and ring sleeves. Multiple ring sleeves are sequentially sleeved on the outer ring of the rotating shaft along the axial direction. The end faces of adjacent ring sleeves abut against each other. The inner ring of the ring sleeve and the outer ring of the rotating shaft are provided with limiting components. The limiting components are used to restrict the mutual rotation of the rotating shaft and the ring sleeves. The outer ring of the rotating shaft has multiple pairs of rings, and the crushing blade on each pair of rings spans two rings through a blade holder, which is welded to the outer periphery of each of the two rings.

2. The crusher with easily replaceable blades according to claim 1, characterized in that, The two ends of the rotating shaft have threaded sections, and the threaded sections are connected to stop plates by threads.

3. The crusher with easily replaceable blades according to claim 1, characterized in that, The inner wall of the ring is provided with a slot, which is used to connect with the hook of an external device.

4. The crusher with easily replaceable blades according to claim 1, characterized in that, Each crushing roller has multiple rows of crushing blades on its exterior, with each row of blades spirally arranged along the outer surface of the crushing roller.

5. The crusher with easily replaceable blades according to claim 1, characterized in that, The crushing blade and the blade holder are connected by bolts.

6. The crusher with easily replaceable blades according to claim 1, characterized in that, The lower end of the housing is open, and a filter screen is installed at the open end. The filter screen is detachably connected to the frame and / or the distance between the filter screen and the crushing roller is adjustable.

7. The crusher with easily replaceable blades according to claim 6, characterized in that, The filter screen is arc-shaped, and one filter screen is respectively installed below each crushing roller. The filter screen is coaxially arranged with the crushing roller.

8. The crusher with easily replaceable blades according to claim 7, characterized in that, One end of the filter screen is rotatably connected to the mounting base, and the filter screen can rotate relative to the mounting base to adjust the distance between the filter screen and the crushing roller.

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