Multi-stage shredding machine with material pressing structure

Abstract

The utility model relates to the technical field of shredding machines, and discloses a multi-stage shredding machine with a material pressing structure, which comprises a rack, a first-stage shredding mechanism and a material pressing mechanism are arranged above the rack, a second-stage shredding mechanism is arranged below the rack, the second-stage shredding mechanism is positioned below the first-stage shredding mechanism, and the material pressing mechanism is positioned below the second-stage shredding mechanism. The pressing mechanism is located above the first-stage shredding mechanism. The material pressing mechanism is arranged on the rack, when the first-stage shredding mechanism works, the transmission mechanism drives the material pressing mechanism to work, the material pressing mechanism is made to circularly press waste up and down and press the waste into the first-stage shredding mechanism, the friction force between the waste and cutter teeth in the first-stage shredding mechanism is increased, and the treatment efficiency is improved; and meanwhile, the second-stage shredding mechanism is arranged below the rack, so that the fertilizer sheared by the first-stage shredding mechanism can be secondarily refined and shredded, and the shredding effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shredders, in particular to a multi-stage shredder with a material pressing structure. Background Art

[0002] A shredder is a device that shears and tears materials, primarily used to break down large pieces of material or waste into smaller fragments. Its operating principle relies on rotating blades or gears that exert shear and tearing forces on the material, breaking it down. Shredders are used in a wide range of applications, including processing scrap metal, waste paper, plastics, rubber, and textiles. In the waste recycling industry, shredders are highly efficient in reducing waste materials into a form that is more easily stored and recycled.

[0003] When the existing shredder is shredding some waste materials with relatively smooth surfaces, the material is more likely to slide in the shredder due to the small friction when the cutter bites the waste surface, and the waste cannot be effectively grasped, resulting in reduced processing efficiency.

[0004] Therefore, we propose a multi-stage shredder with a material pressing structure to solve the above problems. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies of the prior art in the above background technology, the purpose of the present invention is to provide a multi-stage shredder with a material pressing structure to solve the problems raised in the above background technology.

[0007] (2) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A multi-stage shredder with a material pressing structure comprises a frame, a primary shredding mechanism and a material pressing mechanism are arranged above the frame, a secondary shredding mechanism is arranged below the frame, the secondary shredding mechanism is located below the primary shredding mechanism, and the material pressing mechanism is located above the primary shredding mechanism;

[0010] The pressing mechanism includes columns respectively arranged on the left and right sides of the first-level shredding mechanism and a crossbeam slidably installed between the two columns in the up and down directions. A pressing plate is provided at the lower part of the crossbeam, and a rotating disk is rotatably installed on one side of the top of the column. An eccentric rod is fixed on the rotating disk. A fixed rod is provided on the top of the crossbeam, and a connecting rod is provided between the eccentric rod and the fixed rod, and the eccentric rod and the fixed rod are respectively hinged to the connecting rod.

[0011] Furthermore, a guide groove is vertically opened on one side of the column close to the cross beam, and two sides of the cross beam are fixed to guide sliders that slide in the guide groove.

[0012] Furthermore, the first-stage shredding mechanism includes a first shredding box and two rollers rotatably installed in the first shredding box. The two rollers are parallel to each other and have a plurality of staggered blade teeth fixed on their side walls. Two first drive motors and reducers are provided on both sides of the frame. The two first drive motors are respectively connected to the two rollers through two reducers.

[0013] Furthermore, the secondary shredding mechanism includes a second shredder box whose top is connected to the bottom of the first shredder box, a discharge port is provided at the bottom of the second shredder box, a rotating rod is rotatably installed in the second shredder box, and a second drive motor connected to the rotating rod with a rotating shaft is provided on one side of the second shredder box, a plurality of mounting disks are installed on the rotating rod at intervals, a plurality of knife rods are fixed on the mounting disks along the circumferential direction thereof, and a plurality of shredding blades are fixed on the knife rods at intervals.

[0014] Preferably, a plurality of material blocking cross bars are arranged at intervals in the discharge port, two ends of the material blocking cross bar are respectively fixed to the two end walls of the second shredder box, and a plurality of arc-shaped support frames are arranged at intervals on the material blocking cross bar.

[0015] Preferably, it also includes a transmission mechanism, which includes a driving wheel fixed on the reducer shaft and a connecting shaft rotatably mounted on the upper part of the column and fixed to the axis of the rotating disk at one end, a driven wheel is fixed to the end of the connecting shaft away from the rotating disk, and the driving wheel and the driven wheel are connected by a transmission belt.

[0016] Preferably, a material guide plate in the shape of an inverted bucket is provided on the top of the first shredder box, and a notch adapted to the column is opened on the material guide plate.

[0017] Preferably, a roller is rotatably mounted on the guide slider, and the roller is rollingly connected to the inner wall of the guide groove.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] By arranging a pressing mechanism on the frame, when the first-level shredding mechanism is operating, the pressing mechanism is driven by the transmission mechanism to operate, so that it circulates up and down to press the waste down and press it into the first-level shredding mechanism, thereby increasing the friction between the waste and the first-level shredding mechanism and the blade teeth, thereby improving the processing efficiency; at the same time, a second-level shredding mechanism is arranged under the frame, which can perform second-level fine shredding on the fertilizer after shearing by the first-level shredding mechanism, thereby improving the shredding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the multi-stage shredder with a material pressing structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the partial structure of the material pressing mechanism of the multi-stage shredder with a material pressing structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the top view of the first-stage shredding mechanism of the multi-stage shredder with a material pressing structure of the present invention;

[0024] Figure 4 This is an enlarged view of point A of the multi-stage shredder with a material pressing structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the secondary shredding mechanism of the multi-stage shredder with a material pressing structure of the present invention.

[0026] In the figure: frame 1, primary shredding mechanism 2, first shredding box 21, roller 22, knife teeth 23, first drive motor 24, reducer 25, secondary shredding mechanism 3, second shredding box 31, rotating rod 32, mounting plate 33, knife bar 34, shredding blade 35, second drive motor 36, material blocking cross bar 37, arc-shaped support frame 38, discharge port 39, pressing mechanism 4, two columns 41, beam 42, pressing plate 43, rotating disk 44, eccentric rod 45, fixed rod 46, connecting rod 47, guide groove 48, guide slider 49, transmission mechanism 5, driving wheel 51, connecting shaft 52, driven wheel 53, transmission belt 54, guide plate 6, notch 7, roller 8. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the 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 of the embodiments. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-5 As shown, the utility model provides a multi-stage shredder with a pressing structure, including a frame 1, a first-stage shredding mechanism 2 and a pressing mechanism 4 are arranged above the frame 1, and the pressing mechanism 4 is located above the first-stage shredding mechanism 2 and operates synchronously with the first-stage shredding mechanism 2 through a transmission mechanism 5.

[0029] The first-stage shredding mechanism 2 performs first-stage shearing and shredding on the waste. During the shredding process, the pressing mechanism 4 presses the fertilizer downward to increase the friction between the fertilizer and the first-stage shredding mechanism 2 to prevent the "slipping" phenomenon.

[0030] like Figure 2 As shown, the primary shredder mechanism 2 includes a first shredder box 21 and two rollers 22 rotatably mounted in the first shredder box 21. The two rollers 22 are parallel to each other and have a plurality of staggered blade teeth 23 fixed to their side walls. The blade teeth 23 adopt a shredder cutter disclosed in application number 202322574229.3. This is prior art and will not be described in detail here. Two first drive motors 24 and reducers 25 are provided on both sides of the frame 1. The two first drive motors 24 are connected to the two rollers 22 respectively through two reducers 25.

[0031] like Figure 1 and Figure 2 As shown, the pressing mechanism 4 includes columns 41 respectively arranged on the left and right sides of the first-level shredding mechanism 2 and a crossbeam 42 slidably installed between the two columns 41 along the up and down directions. A pressing plate 43 is provided at the lower part of the crossbeam 42, and a rotating disk 44 is rotatably installed on one side of the top of the column 41. An eccentric rod 45 is fixed on the rotating disk 44. A fixed rod 46 is provided on the top of the crossbeam 42, and the eccentric rod 45 and the fixed rod 46 are respectively hinged to the connecting rod 47. A guide groove 48 is vertically opened on one side of the column 41 close to the crossbeam 42, and both sides of the crossbeam 42 are fixed to the guide slider 49 that slides in the guide groove 48.

[0032] The transmission mechanism 5 includes a driving wheel 51 fixed on the rotating shaft of the reducer 25 and a connecting shaft 52 rotatably mounted on the upper part of the column 41 and fixed at one end to the axis of the rotating disk 44. A driven wheel 53 is fixed at the end of the connecting shaft 52 away from the rotating disk 44. The driving wheel 51 and the driven wheel 53 are connected by a transmission belt 54.

[0033] When the first drive motor 24 rotates, the reducer 25 drives the roller 22 and the blade teeth 23 to rotate, and the two sets of staggered blade teeth 23 shear and shred the waste. At the same time, driven by the transmission mechanism 5, the rotating disk 44 rotates, and the eccentric rod 45, the connecting rod 47 and the fixed rod 46 drive the beam 42 to move up and down in a circular motion. During the movement, the waste is pressed toward the two sets of blade teeth 23 by the pressing plate 43, increasing the friction between the blade teeth 23 and the waste to prevent it from sliding during shearing, thereby improving the processing efficiency. The setting of the guide groove 48 and the guide slider 49 limits the sliding direction of the beam 42 so that it can only slide up and down.

[0034] As a preferred technical solution of the present invention: Figure 1 、 Figure 4 and Figure 5As shown, a secondary shredder mechanism 3 is disposed below the frame 1 and is located below the primary shredder mechanism 2. The secondary shredder mechanism 3 includes a second shredder box 31, the top of which is connected to the bottom of the first shredder box 21. The second shredder box 31 has an arc-shaped cross-section. A rotating rod 32 is rotatably mounted within the second shredder box 31. A second drive motor 36 is provided on one side of the second shredder box 31 and connected to the rotating rod 32 via a rotating shaft. A plurality of mounting discs 33 are mounted on the rotating rod 32 at intervals. A plurality of cutter bars 34 are fixed to the mounting discs 33 along their circumferences. A plurality of shredder blades 35 are fixed to the cutter bars 34 at intervals. A discharge port 39 is defined at the bottom of the second shredder box 31. Waste processed by the primary shredder mechanism 2 falls into the secondary shredder mechanism 3, where it undergoes a secondary, finer shredding process to optimize the shredding effect. The shredded waste is then discharged through the discharge port 39.

[0035] As a preferred technical solution of the present invention, multiple blocking crossbars 37 are spaced apart within the discharge port 39. The ends of the blocking crossbars 37 are fixed to the left and right end walls of the second shredder box 31. Multiple arc-shaped support brackets 38 are spaced apart on the blocking crossbars 37. The ends of the arc-shaped support brackets 38 are fixed to the front and rear side walls of the second shredder box 31. The spaced blocking crossbars 37 and arc-shaped support brackets 38 prevent large pieces of waste from being discharged directly, extending the time the waste remains in the second shredder box 31 and allowing the shredder blades 35 to rotate and shred large pieces of material multiple times, thereby improving the shredding effect.

[0036] As a preferred technical solution of the present invention, a guide plate 6 in the shape of an inverted bucket is provided on the top of the first shredder box 21. A notch 7 is provided on the guide plate 6 to match the column 41. The setting of the guide plate 6 can guide the feeding of the material and make it slide into the first shredder box 21.

[0037] As a preferred technical solution of the present invention, a roller 8 is rotatably mounted on the guide slider 49, and the roller 8 is rollingly connected to the inner wall of the guide groove 48. The setting of the roller 8 is intended to reduce the friction between the guide slider 49 and the guide groove 48 to extend its service life.

[0038] For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances; for technicians in this field, they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this utility model should be included in the scope of protection of this utility model.

Claims

1. A multi-stage shredder with a material pressing structure, comprising a frame (1), characterized in that: A primary shredding mechanism (2) and a material pressing mechanism (4) are provided above the frame (1), and a secondary shredding mechanism (3) is provided below the frame (1), wherein the secondary shredding mechanism (3) is located below the primary shredding mechanism (2), and the material pressing mechanism (4) is located above the primary shredding mechanism (2); The pressing mechanism (4) comprises upright posts (41) respectively arranged on the left and right sides of the first-stage shredding mechanism (2) and a crossbeam (42) slidably installed between the two upright posts (41) in the up-down direction, a pressing plate (43) is provided at the lower part of the crossbeam (42), a rotating disk (44) is rotatably installed on one side of the top of the upright post (41), an eccentric rod (45) is fixed on the rotating disk (44), a fixing rod (46) is provided at the top of the crossbeam (42), a connecting rod (47) is provided between the eccentric rod (45) and the fixing rod (46), and the eccentric rod (45) and the fixing rod (46) are respectively hinged to the connecting rod (47).

2. The multi-stage shredder with a material pressing structure according to claim 1, characterized in that: A guide groove (48) is vertically provided on one side of the column (41) close to the crossbeam (42), and both sides of the crossbeam (42) are fixed to guide sliders (49) that slide in the guide groove (48).

3. The multi-stage shredder with a material pressing structure according to claim 1, characterized in that: The primary shredding mechanism (2) comprises a first shredding box (21) and two rollers (22) rotatably mounted in the first shredding box (21), the two rollers (22) being parallel to each other and having a plurality of staggered blade teeth (23) fixed on their side walls, two first drive motors (24) and reducers (25) being arranged on both sides of the frame (1), the two first drive motors (24) being connected to the two rollers (22) respectively via two reducers (25).

4. The multi-stage shredder with a material pressing structure according to claim 3, characterized in that: The secondary shredding mechanism (3) comprises a second shredding box (31) whose top is connected to the bottom of the first shredding box (21); a discharge port (39) is provided at the bottom of the second shredding box (31); a rotating rod (32) is rotatably installed in the second shredding box (31); a second driving motor (36) is provided on one side of the second shredding box (31) and is connected to the rotating rod (32) by a rotating shaft; a plurality of mounting plates (33) are installed at intervals on the rotating rod (32); a plurality of knife rods (34) are fixed on the mounting plate (33) along its circumferential direction; and a plurality of shredding blades (35) are fixed at intervals on the knife rod (34).

5. The multi-stage shredder with a material pressing structure according to claim 4, characterized in that: A plurality of material blocking cross bars (37) are arranged at intervals in the discharge port (39), and the two ends of the material blocking cross bars (37) are respectively fixed to the two end walls of the second shredder box (31), and a plurality of arc-shaped support frames (38) are arranged at intervals on the material blocking cross bars (37).

6. The multi-stage shredder with a material pressing structure according to claim 3, characterized in that: The invention also includes a transmission mechanism (5), wherein the transmission mechanism (5) includes a driving wheel (51) fixed on the rotating shaft of the reducer (25) and a connecting shaft (52) rotatably mounted on the upper part of the column (41) and having one end fixed to the axis of the rotating disk (44), a driven wheel (53) being fixed on the end of the connecting shaft (52) away from the rotating disk (44), and the driving wheel (51) and the driven wheel (53) are connected by a transmission belt (54).

7. The multi-stage shredder with a material pressing structure according to claim 3, characterized in that: A material guide plate (6) in the shape of an inverted bucket is provided on the top of the first shredder box (21), and a notch (7) adapted to the column (41) is provided on the material guide plate (6).

8. The multi-stage shredder with a material pressing structure according to claim 2, characterized in that: A roller (8) is rotatably mounted on the guide slider (49), and the roller (8) is in rolling connection with the inner wall of the guide groove (48).

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