Integrated shredding device with multi-stage shredding mechanism

Abstract

The invention relates to the field of shredding machines, in particular to an integrated shredding device with multiple stages of shredding mechanisms. The integrated shredding device comprises a rack, a first-stage shredding mechanism is arranged on the upper portion of the rack, and a second-stage shredding mechanism is arranged on the lower portion of the rack; the first-stage shredding mechanism comprises a first-stage shredding box, a plurality of rotatable first-stage shredding movable cutters located in the first-stage shredding box and a plurality of first-stage shredding fixed cutters fixed in the first-stage shredding box, a first-stage feeding port is formed in the upper portion of the first-stage shredding box, and a first-stage discharging port is formed in the lower portion of the first-stage shredding box; and the second-stage shredding mechanism comprises a second-stage shredding box and a plurality of rotatable second-stage shredding moving cutters located in the second-stage shredding box, a second-stage feeding port is formed in the upper portion of the second-stage shredding box, and a second-stage discharging port is formed in the lower portion of the second-stage shredding box. The first-stage shredding mechanism and the second-stage shredding mechanism are integrally arranged and closely arranged up and down, the structure is compact, the occupied space is small, two-stage material shredding can be achieved, use is flexible, and the two-stage shredding mechanism can be used in cooperation with a van truck and can also be fixed to a certain place to be independently used.

Description

Technical Field

[0001] The present invention relates to the technical field of shredders, and in particular to an integrated shredding device with a multi-stage shredding mechanism. Background Art

[0002] A shredder is a machine used for fine-crushing, typically processing unprocessed raw materials or scraps to reduce their size. A typical example is shredding plastic or rubber scraps, melting them as raw materials, and then pelletizing them for use in remaking plastic bottles, tires, or trash cans. Shredders are used in the plastics recycling industry, often shredding waste large-diameter PE plastic pipes, large stacks of plastic sheets, and scraps. For example, patent application publication number CN118925921A discloses a shredder control system comprising a frame mounted on a shredder box with a feed hopper mounted at its upper end. Two cooperating shredder blades are housed within the shredder box. A first shredder motor and a second shredder motor are located on either side of the frame, driving the shredder blades. A discharge port is located at the lower end of the shredder box. This type of ground-mount shredder typically uses a single-stage shredding process. For applications requiring finer-grained material, the pre-shredded material at the discharge port must be transported to another shredder unit, resulting in a complex overall structure and a large footprint. The utility model patent with authorization announcement number CN 205253300U discloses a vehicle-mounted crusher. To use it, the vehicle equipped with the crusher is driven to the material to be crushed. The feed conveyor belt, which is placed on the vehicle's bucket, is removed and connected at one end to the feed port. The other end is placed on the ground. The material to be crushed is placed on the ground end of the feed conveyor belt, which then transports it to the crushing chamber. The crushed material in the crushing chamber then falls from the discharge port onto the discharge conveyor belt, which then drops it to the material pile at the rear end of the vehicle's bucket. This vehicle-mounted crusher also features a single-stage crushing mechanism. Summary of the Invention

[0003] The object of the present invention is to provide an integrated shredding device with a multi-stage shredding mechanism, wherein the multi-stage shredding mechanism is arranged in one piece, has a compact structure and is easy to use.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An integrated shredder device with a multi-stage shredding mechanism comprises a frame, a primary shredder mechanism is provided on the upper portion of the frame, and a secondary shredder mechanism is provided on the lower portion of the frame; the primary shredder mechanism comprises a primary shredder box, a plurality of rotatable primary shredder movable knives located in the primary shredder box, and a plurality of primary shredder fixed knives fixed in the primary shredder box; the primary shredder box is provided with a primary feed port on the upper portion and a primary discharge port on the lower portion;

[0006] The secondary shredding mechanism includes a secondary shredding box and a plurality of rotatable secondary shredding moving knives located in the secondary shredding box. A secondary feed inlet is provided at the upper part of the secondary shredding box, and a secondary discharge outlet is provided at the lower part.

[0007] Further, the primary shredding moving knives are divided into two groups, defined as the first shredding moving knife and the second shredding moving knife. The primary shredding stationary knives are divided into two groups, defined as the first shredding stationary knife and the second shredding stationary knife. The first shredding moving knife and the second shredding moving knife are respectively installed on the first shredding knife shaft and the second shredding knife shaft.

[0008] Further, the first shredding knife shaft and the second shredding knife shaft are arranged in parallel, and the first shredding moving knife and the second shredding moving knife are arranged alternately in sequence.

[0009] Further, the secondary shredding moving knife includes a knife seat, and a secondary moving blade is detachably connected to the knife seat.

[0010] Further, the secondary moving blade is pressed on the knife seat by a pressing plate. A positioning groove is provided on the side of the secondary moving blade opposite to the pressing plate, and a positioning pin is provided on the blade mounting surface of the knife seat, and the positioning pin is located in the positioning groove.

[0011] Further, the positioning groove is a long groove.

[0012] Further, the knife seat has a triangular structure, and a secondary moving blade is connected to each of the three tops of the knife seat.

[0013] Further, a plurality of secondary shredding moving knives are alternately distributed in sequence in the axial direction of the secondary knife shaft.

[0014] Further, the secondary discharge outlet is formed by the mesh holes of a sieve mesh. One side of the sieve mesh is hinged to the secondary shredding box, and the other side is connected to the secondary shredding box through a quick-release structure.

[0015] Further, the quick-release structure includes a locking handwheel, and one end of the locking handwheel extends into the secondary shredding box and supports the other side of the sieve mesh.

[0016] Advantages of the present invention:

[0017] (1) In the present invention, the primary and secondary shredding mechanisms are integrally arranged and are closely arranged vertically. The structure is compact and occupies a small space. It can realize two-stage shredding of materials, making the particle size of the crushed materials smaller. The integrated shredding device of the present invention can be combined with a box truck to form a vehicle-mounted shredder, which is flexible to use; it can also be fixed in a certain place for independent use.

[0018] (2) The secondary moving blade is pressed on the tool holder by a pressing plate. A positioning groove is provided on one side of the secondary moving blade, and a positioning pin is provided on the blade mounting surface of the tool holder. The positioning pin and the positioning groove are used in cooperation, so that the secondary moving blade can be quickly installed in place when installing the secondary moving blade, improving the later maintenance efficiency.

[0019] (3) One side of the screen is supported by a quick-release structure, which is easy to open. Without disassembling the secondary shredding moving blade, the screen can be removed from the bottom of the shredder, and the disassembly and assembly are convenient and fast. Description of the Drawings

[0020] Figure 1 is a perspective view of the integrated shredding device with a multi-stage shredding mechanism of the present invention;

[0021] Figure 2 is a partial view of the primary shredding mechanism;

[0022] Figure 3 is a partial structural diagram of the secondary shredding mechanism;

[0023] Figure 4 is a perspective view of the secondary shredding moving blade;

[0024] Figure 5 is a perspective view of the secondary moving blade;

[0025] Figure 6 is a schematic diagram of the cooperation between the screen and the quick-release structure.

[0026] 1. Truck platform; 2. Frame; 31. Primary shredding box; 32. First motor; 33. Gear; 34. First shredding fixed blade; 35. First shredding moving blade; 36. Second shredding moving blade; 41. Secondary shredding box; 42. Second motor; 43. Driven pulley; 44. Screen; 5. Hopper; 6. Secondary shredding moving blade; 61. Tool holder; 62. Pressing plate; 63. Secondary moving blade; 631. Positioning groove; 632. Through hole; 7. Quick-release structure; 71. Locking handwheel; 711. Handwheel; 712. Support part; 72. Locking nut. Detailed Embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0028] Embodiments of the present invention:

[0029] As Figures 1-6As shown in the figure, an integrated shredding device with a multi-stage shredding mechanism includes a frame 2. An upper part of the frame 2 is provided with a primary shredding mechanism, and a lower part of the frame 2 is provided with a secondary shredding mechanism. The primary shredding mechanism includes a primary shredding box 31 and a plurality of rotatable primary shredding moving knives located in the primary shredding box 31, and a plurality of primary shredding fixed knives fixed in the primary shredding box 31. An upper part of the primary shredding box 31 is provided with a primary feed inlet, and a lower part thereof is provided with a primary discharge outlet. The secondary shredding mechanism includes a secondary shredding box 41 and a plurality of rotatable secondary shredding moving knives 6 located in the secondary shredding box 41. An upper part of the secondary shredding box 41 is provided with a secondary feed inlet, and a lower part thereof is provided with a secondary discharge outlet. The secondary feed inlet is formed by a hopper 5. The material to be shredded enters from the hopper 5, and after primary shredding, it falls into the secondary shredding box 41 for secondary shredding.

[0030] In the present invention, the primary and secondary shredding mechanisms are integrally arranged, with a compact structure, capable of achieving two-stage shredding and realizing the function of crushing materials. The present invention focuses on crushing plastic articles, such as plastic pallets. Of course, in other embodiments, it can also be used to crush other types of materials.

[0031] The integrated shredding device of the present invention is applied to a box truck to form a movable on-vehicle shredder. Figure 1 Only a part of the truck platform 1 is schematically shown in the figure. The structure of the box truck is not an improvement point of the present invention and will not be elaborated further. A foldable conveying mechanism (not shown) is also provided, which can refer to the content of the prior art, such as the utility model patent with the authorization announcement number CN 205253300U. In other embodiments, the integrated shredding device can also be used in a fixed place, which is more suitable for places with long-term material shredding requirements.

[0032] The specific detailed structure of the integrated shredding device of the present invention is as follows:

[0033] As Figure 2 shown, the primary shredding moving knives are divided into two groups, defined as the first shredding moving knives 35 and the second shredding moving knives 36. The primary shredding fixed knives are divided into two groups, defined as the first shredding fixed knives 34 and the second shredding fixed knives. The first shredding fixed knives 34 and the second shredding fixed knives are respectively located on both sides of the primary shredding box 31. A plurality of the first shredding fixed knives 34 are arranged at intervals in sequence, and a plurality of the second shredding fixed knives are arranged at intervals in sequence. The intervals are for the shredding moving knives to rotate in, achieving the effect of shearing the material.

[0034] The first shredding moving knives 35 and the second shredding moving knives 36 are respectively installed on the first shredding knife shaft and the second shredding knife shaft.

[0035] The first shredding knife shaft and the second shredding knife shaft are arranged in parallel. Both the first shredding moving knife 35 and the second shredding moving knife 36 are plate-shaped structures and are provided with several cutter teeth on the outer periphery. The first shredding moving knife 35 and the second shredding moving knife 36 are arranged alternately in sequence. The first shredding knife shaft just corresponds to the interval between two adjacent first shredding fixed knives 34, and the second shredding knife shaft just corresponds to the interval between two adjacent second shredding fixed knives. The structures of the first shredding moving knife 35 and the second shredding moving knife 36 are the same and are made of existing tools, such as those disclosed in the prior patent publication number CN118925921A.

[0036] A gear 33 is respectively provided at the end parts of the first shredding knife shaft and the second shredding knife shaft. The two gears 33 are meshed and driven. One of the shredding knife shafts is the driving shaft and is driven by the first motor 32 and the reducer.

[0037] As Figures 3-5 As shown, a plurality of secondary shredding moving knives 6 are alternately distributed in sequence in the axial direction of the secondary knife shaft. The secondary shredding moving knife 6 includes a tool holder 61. The tool holder 61 has a triangular structure, and three tops of the tool holder 61 are each connected with a secondary moving blade 63. The secondary moving blade 63 is detachably connected to the tool holder 61. In other embodiments, the tool holder can also adopt a diamond structure or a rectangular structure.

[0038] The secondary moving blade 63 is pressed on the tool holder 61 by a pressing plate 62. The pressing plate 62 is connected to the tool holder 61 by screws, and the screws also pass through through holes 632 on the secondary moving blade 63. A positioning groove 631 is provided on the side of the secondary moving blade 63 opposite to the pressing plate 62. A positioning pin is provided on the blade mounting surface of the tool holder 61, and the positioning pin is located in the positioning groove 631. The positioning groove 631 is a long groove. When installing the secondary blade, the positioning groove 631 plays a positioning role. Under the guiding action of the positioning pin, it can be quickly installed in the predetermined position of the tool holder 61, and then fixed by the pressing plate 62 and screws. Since there are many secondary moving blades 63, whether it is in the initial installation stage during factory production or in the later maintenance and replacement stage of the secondary moving blade 63, the secondary blade with the positioning groove 631 can be quickly installed in place, saving time.

[0039] As Figure 3 As shown, a driven pulley 43 is provided at one end of the secondary knife shaft, and is belt-driven with a driving pulley provided on the motor shaft of the second motor 42.

[0040] As Figure 6As shown, the secondary discharge port is formed by the mesh holes of the screen 44, and the screen 44 is in a semi-circular structure with an open upper part. One side of the screen 44 is hinged to the secondary shredding box 41, and the other side is connected to the secondary shredding box 41 through the quick-release structure 7. By using this quick-release structure 7, the quick disassembly of one side of the screen 44 can be realized, and the screen 44 can be quickly opened from the lower part of the equipment, which is convenient for later maintenance. Compared with the traditional method of disassembling the screen 44 only after disassembling the secondary shredding moving knife 6 and the secondary knife shaft, the efficiency can be greatly improved.

[0041] The quick-release structure 7 includes a locking handwheel 71. One end of the locking handwheel 71 extends into the secondary shredding box 41 and supports the other side of the screen 44. In this embodiment, there are three locking handwheels 71. The locking handwheel 71 includes a handwheel 711, a threaded section, and a supporting part 712. A locking nut 72 is threadedly connected to the outside of the secondary shredding box 41. The threaded section of the locking handwheel 71 is in threaded cooperation with the locking nut 72. The end of the supporting part 712 of the locking handwheel 71 is conical and extends into the secondary shredding box 41 to support the side of the screen 44. When disassembling the screen 44, turn the locking handwheel 71, and the supporting part 712 of the locking handwheel 71 gradually disengages from the screen 44. When the screen 44 is no longer supported, it rotates downward around the hinge shaft on the other side and opens. After opening, the inside can be cleaned and maintained. The locking nut 72 can also be welded and fixed to the side wall of the secondary shredding box to provide a threaded hole for cooperating with the threaded section of the locking handwheel 71.

[0042] The serial numbers assigned to the components in this article, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling). In the description of the invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the invention.

[0043] In an invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

Claims

1. An integrated shredding device with a multi-stage shredding mechanism, characterized in that: It includes a frame. A primary shredding mechanism is provided at the upper part of the frame, and a secondary shredding mechanism is provided at the lower part of the frame. The primary shredding mechanism includes a primary shredding box and a plurality of rotatable primary shredding moving knives located in the primary shredding box, and a plurality of primary shredding fixed knives fixed in the primary shredding box. A primary feed inlet is provided at the upper part of the primary shredding box, and a primary discharge outlet is provided at the lower part. The secondary shredding mechanism includes a secondary shredding box and a plurality of rotatable secondary shredding moving knives located in the secondary shredding box. A secondary feed inlet is provided at the upper part of the secondary shredding box, and a secondary discharge outlet is provided at the lower part.

2. The integrated shredding device with a multi-stage shredding mechanism according to claim 1, characterized in that: The primary shredding moving knives are divided into two groups, defined as the first shredding moving knife and the second shredding moving knife. The primary shredding fixed knives are divided into two groups, defined as the first shredding fixed knife and the second shredding fixed knife. The first shredding moving knife and the second shredding moving knife are respectively installed on the first shredding knife shaft and the second shredding knife shaft.

3. The integrated shredding device with a multi-stage shredding mechanism according to claim 2, characterized in that: The first shredding knife shaft and the second shredding knife shaft are arranged in parallel, and the first shredding moving knife and the second shredding moving knife are arranged alternately in sequence.

4. The integrated shredding device with a multi-stage shredding mechanism according to claim 1, characterized in that: The secondary shredding moving knife includes a knife seat, and a secondary moving blade is detachably connected to the knife seat.

5. The integrated shredding device with a multi-stage shredding mechanism according to claim 4, characterized in that: The secondary moving blade is pressed on the knife seat by a pressing plate. A positioning groove is provided on the side of the secondary moving blade opposite to the pressing plate, and a positioning pin is provided on the blade mounting surface of the knife seat, and the positioning pin is located in the positioning groove.

6. The integrated shredding device with a multi-stage shredding mechanism according to claim 5, characterized in that: The positioning groove is a long groove.

7. The integrated shredding device with a multi-stage shredding mechanism according to claim 4, characterized in that: The knife seat has a triangular structure, and a secondary moving blade is connected to each of the three tops of the knife seat.

8. The integrated shredding device with a multi-stage shredding mechanism according to claim 1, characterized in that: A plurality of secondary shredding moving knives are alternately distributed in sequence in the axial direction of the secondary knife shaft.

9. The integrated shredding device with a multi-stage shredding mechanism according to claim 1, characterized in that: The secondary discharge outlet is formed by the mesh holes of a screen. One side of the screen is hinged to the secondary shredding box, and the other side is connected to the secondary shredding box through a quick-release structure.

10. The integrated shredding device with a multi-stage shredding mechanism according to claim 9, characterized in that: The quick-release structure includes a locking handwheel. One end of the locking handwheel extends into the secondary shredding box and supports the other side of the screen.

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