Two-stage shredding machine

Abstract

The utility model relates to a two-stage shredding machine which comprises a rack and a first-stage shredding cabin fixed on the rack, a first-stage shredding cutter set is arranged in the first-stage shredding cabin, a first-stage feeding hopper is arranged at the upper end of the first-stage shredding cabin, a first-stage discharging opening is formed in the lower end of the first-stage shredding cabin, a second-stage shredding cabin is arranged below the first-stage shredding cabin, and a second-stage shredding cutter set is arranged at the lower end of the second-stage shredding cabin. A second-stage shredding cutter set is arranged in the second-stage shredding cabin, a second-stage feeding hopper corresponding to the first-stage discharging port is arranged at the upper end of the second-stage shredding cabin, and a second-stage discharging port is formed in the second-stage shredding cabin. And two stages of shredding cutter groups are adopted, so that the size of the shredded materials is smaller, and different requirements of users are met. The first-stage shredding cabin and the second-stage shredding cabin are arranged up and down and are integrated on the same rack, so that the structure is compact, and the occupied area is small.

Description

Technical Field

[0001] This utility model relates to the field of shredder technology, specifically to a two-stage shredder. Background Technology

[0002] For example, CN118925921A discloses a shredder control system, which includes a frame with a shredding box mounted on it. A feed hopper is installed at the top of the shredding box, and two cooperating shredding blades are installed inside. A first shredding motor and a second shredding motor, respectively driving the two shredding blades, are located on both sides of the frame. A discharge port is located at the bottom of the shredding box, and a belt conveyor is installed below the discharge port. For some materials to be shredded, users require finer particles; however, the current method involves connecting a shredder to the end of the belt conveyor. This approach results in a complex equipment structure, a large footprint, and high cost. Utility Model Content

[0003] The purpose of this invention is to provide a two-stage shredder to solve the aforementioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A two-stage shredder includes a frame and a primary shredding chamber fixed on the frame. The primary shredding chamber is equipped with a primary shredding blade assembly. The upper end of the primary shredding chamber is equipped with a primary feed hopper, and the lower end is equipped with a primary discharge port. Below the primary shredding chamber is a secondary shredding chamber, which is equipped with a secondary shredding blade assembly. The upper end of the secondary shredding chamber is equipped with a secondary feed hopper corresponding to the primary discharge port, and the secondary shredding chamber is equipped with a secondary discharge port.

[0006] Furthermore, the primary shredder assembly includes a first cutter shaft and a second cutter shaft, each of which is equipped with multiple primary shredders, which are arranged alternately on their respective cutter shafts.

[0007] Furthermore, the primary shredder includes a blade plate, and the outer periphery of the blade plate is provided with a plurality of blade teeth at intervals.

[0008] Furthermore, the cutting teeth have a V-shaped structure.

[0009] Furthermore, the blade plate has a central shaft hole for mounting on a corresponding blade shaft.

[0010] Furthermore, the first cutter shaft and the second cutter shaft are driven by the first motor and the second motor, respectively, and the first motor and the second motor are located on both sides of the first-stage shredding chamber.

[0011] Furthermore, the secondary shredder assembly includes a main blade shaft and several secondary blade shafts. The secondary blade shafts are arranged at intervals around the main blade shaft in the circumferential direction, and each secondary blade shaft is provided with multiple secondary shredders in sequence. The secondary shredders on adjacent secondary blade shafts are arranged in an alternating manner.

[0012] Furthermore, the main cutter shaft is driven by a third motor.

[0013] Furthermore, the lower part of the secondary shredding chamber adopts a semi-circular screen, and the multiple screen holes of the screen serve as the secondary discharge port.

[0014] Furthermore, the secondary shredder assembly includes a first main blade shaft and a second main blade shaft arranged in parallel. The first main blade shaft has several first auxiliary blade shafts spaced apart in the circumferential direction, and the second main blade shaft has several second auxiliary blade shafts spaced apart in the circumferential direction. Each auxiliary blade shaft is provided with multiple secondary shredders in sequence, and the secondary shredders on adjacent blade shafts are arranged in an alternating manner.

[0015] The beneficial effects of this utility model are:

[0016] This invention features a primary shredding chamber with a primary feed hopper at its upper end. The material to be shredded enters through the primary feed hopper and is initially shredded by the primary shredding blade assembly. Below the primary shredding chamber is a secondary shredding chamber, containing a secondary shredding blade assembly. The shredded material falls into the secondary feed hopper for further shredding by the secondary shredding blade assembly. The secondary shredding chamber has a secondary discharge port to discharge the final material. The use of a two-stage shredding blade assembly results in smaller shredded material sizes to meet different user needs. Both the primary and secondary shredding chambers are integrated on the same frame, arranged vertically, resulting in a compact structure, small footprint, and ease of use. Attached Figure Description

[0017] Figure 1 This is a perspective view of the two-stage shredder of this utility model;

[0018] Figure 2 yes Figure 1 Partial view at point A in the middle;

[0019] Figure 3 This is a front view of the two-stage shredder of this utility model;

[0020] Figure 4 yes Figure 3 Partial view at point B in the middle;

[0021] Figure 5 This is a 3D view of the secondary shredder assembly;

[0022] Figure 6 yes Figure 5 Partial view at point C;

[0023] Figure 7 This is a perspective view of another embodiment of the secondary shredder assembly.

[0024] 1. Frame; 2. Primary shredding chamber; 21. Primary feed hopper; 22. Primary shredding blade; 221. Blade teeth; 31. First motor; 32. Second motor; 4. Third motor; 51. Secondary shredding chamber; 52. Screen; 521. Arc-shaped plate; 522. Circular tube; 53. Secondary shredding blade; 54. Main cutter shaft; 55. Disc; 56. Secondary cutter shaft; 61. First main cutter shaft; 62. Second main cutter shaft; 63. First secondary cutter shaft; 64. Second secondary cutter shaft. Detailed Implementation

[0025] 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 skilled in the art are within the protection scope of the present utility model.

[0026] Embodiments of this utility model:

[0027] like Figures 1-6 As shown, a two-stage shredder includes a frame 1 and a primary shredding chamber 2 fixed on the frame 1. The primary shredding chamber 2 is equipped with a primary shredding blade assembly. The upper end of the primary shredding chamber 2 is equipped with a primary feed hopper 21, and the lower end is equipped with a primary discharge port.

[0028] The primary shredder assembly includes a first cutter shaft and a second cutter shaft arranged in parallel, with the axes of the first and second cutter shafts both on the same horizontal plane. Each of the first and second cutter shafts is equipped with multiple primary shredder blades 22, which are arranged alternately on their respective shafts. During rotation, the outer edge of the primary shredder blade 22 on the first cutter shaft can be positioned between two adjacent primary shredder blades 22 on the second cutter shaft, thereby achieving the purpose of shredding the material.

[0029] The primary shredder 22 includes a blade plate with a central shaft hole for mounting on a corresponding blade shaft. The outer periphery of the blade plate is provided with a plurality of teeth 221 spaced apart, which can be four, five, or other numbers. The teeth 221 have a V-shaped structure. The primary shredder 22 can be found in the applicant's prior patent CN221157032U.

[0030] The first cutter shaft and the second cutter shaft are driven by the first motor 31 and the second motor 32, respectively. The speed can be reduced by a reducer or by a geared motor. They have the characteristics of low speed and high torque. The first motor 31 and the second motor 32 are located on both sides of the first-stage shredding chamber 2.

[0031] Below the primary shredding chamber 2 is a secondary shredding chamber 51, fixed to the frame 1. The secondary shredding chamber 51 contains a secondary shredding blade assembly, and its upper end has a secondary feed hopper corresponding to the primary discharge port. The shredded material falls into the secondary feed hopper and is further shredded by the secondary blade assembly. The secondary shredding chamber 51 has a secondary discharge port to discharge the final material. Below the secondary shredding chamber 51, a belt conveyor can be connected to transport the material to other locations.

[0032] The secondary shredder assembly includes a main blade shaft 54 ​​and several secondary blade shafts 56. In this embodiment, four secondary blade shafts 56 are designed. Each secondary blade shaft 56 is spaced apart circumferentially around the main blade shaft 54. The main blade shaft 54 ​​has several discs 55 arranged along its axial direction, and the secondary blade shafts 56 are fixed to these discs 55 for support. Each secondary blade shaft 56 has multiple secondary shredders 53 arranged sequentially. The secondary shredders 53 on the same secondary blade shaft 56 are arranged sequentially along a straight line, while the secondary shredders 53 on adjacent secondary blade shafts 56 are staggered.

[0033] The secondary shredder 53 adopts a rectangular plate structure.

[0034] The main cutter shaft 54 ​​is driven by the third motor 4, with a belt drive mechanism in between. The third motor 4 is located on the outside of the secondary shredding chamber 51.

[0035] The lower part of the secondary shredding chamber 51 adopts a semi-circular screen 52, and the multiple screen holes of the screen 52 serve as the secondary discharge port. The screen 52 is welded together from several arc-shaped plates 521 and multiple round tubes 522, which can be solid or hollow. The arc-shaped plates 521 are spaced apart in a direction parallel to the main cutter shaft 54, and the round tubes 522 are sequentially inserted through the arc-shaped plates 521. The multiple round tubes 522 are spaced apart in the circumferential direction of the arc-shaped plates 521.

[0036] The above-mentioned two-stage shredder assembly has a single main cutter shaft, but a dual main cutter shaft configuration can also be used, as follows:

[0037] like Figure 7 As shown, the two-stage shredder assembly includes a first main blade shaft 61 and a second main blade shaft 62 arranged in parallel. The first main blade shaft 61 has four first auxiliary blade shafts 63 spaced apart in the circumferential direction, and the second main blade shaft 62 has four second auxiliary blade shafts 64 spaced apart in the circumferential direction. Each auxiliary blade shaft is sequentially equipped with multiple secondary shredder blades 53, and the secondary shredder blades 53 on adjacent blade shafts are arranged in a staggered manner. In this embodiment, the distribution of the main and auxiliary blade shafts, and the structure of the secondary shredder blades 53, are the same as in the previous embodiment.

[0038] The first main cutter shaft 61 and the second main cutter shaft 62 are driven by different motors. The dual-main-shaft two-stage shredder assembly produces smaller shredded material compared to a single-main-shaft two-stage shredder assembly, thus meeting different user needs. The shredder in this embodiment is primarily used for shredding straw and rice straw, but it can also be used for shredding other materials.

[0039] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

Claims

1. A two-stage shredder, comprising a frame, a primary shredding chamber fixed to the frame, a primary shredding blade assembly disposed within the primary shredding chamber, a primary feed hopper at the upper end of the primary shredding chamber, and a primary discharge port at the lower end, characterized in that: Below the primary shredding chamber is a secondary shredding chamber, which contains a secondary shredding blade assembly. At the top of the secondary shredding chamber is a secondary feed hopper corresponding to the primary discharge port, and the secondary shredding chamber has a secondary discharge port.

2. The two-stage shredder according to claim 1, characterized in that: The primary shredder assembly includes a first cutter shaft and a second cutter shaft. Both the first and second cutter shafts are equipped with multiple primary shredders, which are arranged alternately on their respective cutter shafts.

3. The two-stage shredder according to claim 2, characterized in that: The primary shredder includes a blade plate, and the outer periphery of the blade plate is provided with a number of blade teeth at intervals.

4. The two-stage shredder according to claim 3, characterized in that: The cutting teeth have a V-shaped structure.

5. The two-stage shredder according to claim 3, characterized in that: The blade plate has a central hole for mounting on a corresponding blade shaft.

6. The two-stage shredder according to claim 2, characterized in that: The first cutter shaft and the second cutter shaft are driven by the first motor and the second motor, respectively, and the first motor and the second motor are located on both sides of the first-stage shredding chamber.

7. The two-stage shredder according to claim 1, characterized in that: The secondary shredder assembly includes a main blade shaft and several secondary blade shafts. The secondary blade shafts are arranged at intervals around the main blade shaft in the circumferential direction. Each secondary blade shaft is provided with multiple secondary shredders in sequence, and the secondary shredders on adjacent secondary blade shafts are arranged alternately.

8. The two-stage shredder according to claim 7, characterized in that: The main cutter shaft is driven by a third motor.

9. The two-stage shredder according to claim 7, characterized in that: The lower part of the secondary shredding chamber uses a semi-circular screen, and the multiple screen holes of the screen serve as the secondary discharge port.

10. The two-stage shredder according to claim 1, characterized in that: The secondary shredder assembly includes a first main blade shaft and a second main blade shaft arranged in parallel. The first main blade shaft has several first auxiliary blade shafts spaced apart in the circumferential direction, and the second main blade shaft has several second auxiliary blade shafts spaced apart in the circumferential direction. Each auxiliary blade shaft is provided with multiple secondary shredders in sequence, and the secondary shredders on adjacent blade shafts are arranged in an alternating manner.

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