Double-shaft shredding machine with cutters convenient to replace

Abstract

According to the double-shaft shredding machine convenient to replace the cutters, the cutter disc is arranged to be composed of the three cutters, the part, located in the machine box, of the rotating shaft is arranged to be the hexagonal prism face, and each face of the hexagonal prism face is provided with a plurality of threaded holes at equal intervals; the single cutter is detachably connected to the rotating shaft in the mode that the bolt is in threaded connection with the threaded hole, so that when a cutter head of the single cutter in the cutter disc is damaged and needs to be replaced, only the single cutter needs to be replaced, the whole rotating shaft and the cutter disc on the rotating shaft do not need to be detached, and the cutter is more convenient to replace; the cutter is arranged to be of a structure integrally formed by the cutter seats, the cutter bodies and the cutter heads, the cutter seats on the circumferential cutters form the gap ferrule between the cutter discs, the overall rigidity of the cutter is enhanced, and the cutter is not prone to being broken.

Description

Technical Field

[0001] The utility model relates to a double-shaft shredder with convenient replacement of cutting blades, belonging to the technical field of shredders. Background Art

[0002] The double-shaft shredder, also known as the double-shaft shearing crusher, uses the mutual shearing and tearing principle between two relatively rotating cutters to crush materials, thereby reducing the size of the materials to play a role in volume reduction or providing preliminary crushing treatment for the subsequent deep processing of the materials. It is often used in environmental protection fields such as domestic waste disposal, resource recycling, and solid waste crushing pretreatment.

[0003] However, in the prior art, the knives of a double-shaft shredder are generally directly integrally formed with the shaft or are formed by sequentially sleeved multiple sets of cutters on the shaft, and sleeves sleeved on the shaft are provided between each cutter. However, if a single cutter head of the above two types of knives is damaged and needs to be replaced, only the entire knife or the entire cutter can be replaced, which is inconvenient. Therefore, the present application proposes a double-shaft shredder that is easy to replace the cutter to solve the above problem. Utility Model Content

[0004] Based on the above background, the purpose of the utility model is to provide a double-shaft shredder that is easy to replace the cutter, so as to solve the problems in the background technology.

[0005] The utility model provides the following technical solutions:

[0006] A double-shaft shredder for easy replacement of cutters comprises a frame, wherein the top center of the frame is fixedly connected to a chassis, a group of rotating shafts are arranged inside the chassis, both ends of a group of rotating shafts pass through the chassis, a group of rotating shafts are detachably and fixedly connected to multiple groups of cutting discs, the multiple groups of cutting discs are located inside the chassis, a first gap is provided between each group of the multiple groups of cutting discs, and the first gaps between each group of cutting discs on different rotating shafts are staggered.

[0007] Preferably, the rotating shaft is provided with a hexagonal prism surface in the inner part of the chassis, and each surface of the hexagonal prism surface is provided with a plurality of equidistant threaded holes.

[0008] Preferably, each group of cutting discs is composed of three cutting knives, and the three cutting knives are distributed in a circular shape on the rotating shaft. The cutting knives each include a cutting seat, and the cutting seat is provided with a group of resistance surfaces on a side close to the rotating shaft, and a group of through holes are provided on one side of the outer cylindrical surface of the cutting seat, and the group of through holes respectively penetrate a group of resistance surfaces, and a cutting body is provided on the other side of the outer cylindrical surface of the cutting seat, and a cutting head is provided on the side of the cutting body away from the cutting seat.

[0009] Preferably, the cutter seat, cutter body and cutter head are integrally formed, the side of the cutter body away from the through hole is coplanar with a side surface of the cutter seat, and the cutter is threadedly connected to the threaded hole by a bolt passing through the through hole so as to be detachably fixedly connected to the rotating shaft.

[0010] Preferably, the spacing between the threaded holes on the same surface of the hexagonal prism is equal to the spacing between the through holes on two adjacent cutter seats, and when the cutter is detachably connected to the rotating shaft by bolts, a group of contact surfaces on the cutter seat respectively abut against two adjacent surfaces of the hexagonal prism.

[0011] Preferably, motors are provided on both sides of the top chassis of the rack, and reducers are provided at the output ends of the motors. The output ends of the motors are fixedly connected to the input ends of the reducers, and the output ends of the reducers are fixedly connected to the rotating shaft.

[0012] Preferably, a plurality of tooth plates are provided on the front and rear side surfaces inside the chassis, and partitions are provided between each of the tooth plates. The thickness of the partitions is the same as the thickness of the first gap. The protruding parts of the tooth plates are opposite to the first gap, and the tips of the protruding parts of the tooth plates are located below the horizontal symmetry planes of the two rotating shafts.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The utility model discloses a double-shaft shredder which is convenient for replacing cutters. The cutter disc is arranged to be composed of three cutters, the rotating shaft located inside the chassis is arranged to be a hexagonal prism, and a plurality of equidistant threaded holes are provided on each surface of the hexagonal prism. A single cutter is detachably connected to the rotating shaft by means of a bolt and a threaded connection with the threaded hole, so that when the cutter head of a single cutter in the cutter disc is damaged and needs to be replaced, only the single cutter needs to be replaced without removing the entire rotating shaft and the cutter disc on the rotating shaft, so that the replacement of the cutter is more convenient. The cutter is arranged to be an integrally formed structure of a cutter seat, a cutter body and a cutter head, and the cutter seats on each circular cutter are used to form a gap ring between the cutter discs, so that the overall rigidity of the cutter is enhanced, so that the cutter is not easily broken. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of each cutting disc of the utility model when it is installed on the rotating shaft;

[0018] Figure 3 It is a schematic diagram of the rotating shaft structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the cutter structure of the utility model.

[0020] In the figure: 1, frame; 2, chassis; 3, shaft; 4, cutter disc; 5, first gap; 6, hexagonal prism surface; 7, threaded hole; 8, cutter; 9, cutter seat; 10, contact surface; 11, through hole; 12, cutter body; 13, cutter head; 14, bolt; 15, motor; 16, reducer; 17, tooth plate; 18, partition. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described in detail below through specific embodiments and in combination with the accompanying drawings. It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of modification and / or change made to the utility model will fall within the protection scope of the utility model.

[0022] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the field. The methods in the following embodiments, unless otherwise specified, are conventional methods in the field. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0023] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may also be implemented by those skilled in the art without these specific details.

[0024] like Figure 1-Figure 4As shown, a double-shaft shredder for easy replacement of cutters comprises a frame 1, a chassis 2 is fixedly connected to the top center of the frame 1, a set of rotating shafts 3 is arranged inside the chassis 2, both ends of a set of rotating shafts 3 pass through the chassis 2, a set of rotating shafts 3 are detachably and fixedly connected with multiple sets of cutting discs 4, the multiple sets of cutting discs 4 are located inside the chassis 2, a first gap 5 is arranged between each set of the multiple sets of cutting discs 4, and the first gaps 5 between each set of cutting discs 4 on different rotating shafts 3 are staggered; the rotating shaft 3 located inside the chassis 2 is provided with a hexagonal prism 6, A number of equally spaced threaded holes 7 are provided on each face of the hexagonal prism 6. Each group of cutter discs 4 is composed of three cutters 8, which are distributed in a circumferential shape on the rotating shaft 3. The cutters 8 include a cutter seat 9. The cutter seat 9 is provided with a group of abutment surfaces 10 on one side close to the rotating shaft 3. A group of through holes 11 are provided on one side of the outer cylindrical surface of the cutter seat 9. The group of through holes 11 respectively penetrates the group of abutment surfaces 10. A cutter body 12 is provided on the other side of the outer cylindrical surface of the cutter seat 9. A cutter head 13 is provided on the side of the cutter body 12 away from the cutter seat 9. The cutter seat 9, the cutter body 12 and the cutter head 13 are integrally formed. The side of the cutter body 12 away from the through hole 11 is coplanar with a side surface of the cutter seat 9. The cutter 8 is threadedly connected to the threaded hole 7 through a bolt 14 passing through the through hole 11, so as to be detachably fixedly connected to the rotating shaft 3. The spacing between the threaded holes 7 on the same surface of the hexagonal prism surface 6 is equal to the spacing between the through holes 11 on two adjacent cutter seats 9. When the cutter 8 is detachably connected to the rotating shaft 3 by bolts 14, a group of abutment surfaces 10 on the cutter seat 9 respectively abut against two adjacent surfaces of the hexagonal prism surface 6.

[0025] In the above technical scheme, the cutter disc 4 is arranged to be composed of three cutters 8, and the rotating shaft 3 located inside the chassis 2 is arranged to be a hexagonal prism 6, and a number of equidistant threaded holes 7 are opened on each surface of the hexagonal prism 6, and a single cutter 8 is detachably connected to the rotating shaft 3 by means of a bolt 14 threadedly connected to the threaded hole 7, so that when the cutter head 13 of a single cutter 8 in the cutter disc 4 is damaged and needs to be replaced, only the single cutter 8 needs to be replaced without removing the entire rotating shaft 3 and the cutter disc 4 on the rotating shaft 3, so that the replacement of the cutter 8 is more convenient; the cutter 8 is arranged to be a structure in which the cutter seat 9, the cutter body 12 and the cutter head 13 are integrally formed, and the cutter seat 9 on each circular cutter 8 is used to form a gap ring between the cutter discs 4, thereby enhancing the overall rigidity of the cutter 8, so that the cutter 8 is not easily broken.

[0026] In the utility model, motors 15 are provided on both sides of the chassis 2 at the top of the frame 1, and reducers 16 are provided at the output ends of the motors 15. The output ends of the motors 15 are fixedly connected to the input ends of the reducers 16, and the output ends of the reducers 16 are fixedly connected to the rotating shaft 3. Multiple tooth plates 17 are provided on the front and rear side surfaces inside the chassis 2, and partitions 18 are provided between the tooth plates 17. The thickness of the partitions 18 is the same as that of the first gap 5. The protruding parts of the tooth plates 17 face the first gap 5, and the protruding parts of the cutting plates 17 are located below the horizontal symmetry planes of the two rotating shafts 3.

[0027] In the above technical solution, by arranging motors 15 and reducers 16 on both sides of the top of the frame 1, each motor 15 can drive a rotating shaft 3 to rotate, and then drive multiple groups of cutting discs 4 on different rotating shafts 3 to rotate towards each other, which can be used to shredder materials. By arranging the tooth plate 17, the material cannot fall between the cutting disc 4 and the side wall of the chassis 2, thereby ensuring the working efficiency of the shredder. It is worth noting that the motor 15 in the utility model is connected to an external power supply through a controller.

[0028] The working principle of the double-shaft shredder that is easy to replace the cutter is as follows:

[0029] When in use, the motor 15 is started to rotate, and the rotation of the motor 15 drives the rotating shaft 3 to rotate through the reducer 16, and then the cutting disc 4 connected to the rotating shaft 3 can be driven to rotate, so that the shredder is started, and then the material is introduced into the inside of the chassis 2, and the two cutting discs 4 on the rotating shaft 3 rotate toward each other, so that the material can be torn and broken by the cutter head 13 on the cutter 8. When the shredder is used for a long time or the cutter head 13 is broken under unexpected circumstances and the cutter 8 cannot be used, first rotate the cutter 8 with the damaged cutter head 13 to the feed inlet position of the shredder, and then screw the bolt 14 in the through hole 11 of the cutter seat 9 corresponding to the cutter head 13 out of the threaded hole 7, so that the cutter 8 corresponding to the cutter head 13 can be removed, and the reverse operation can be performed when replacing a new cutter 8.

[0030] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A double-shaft shredder with easy replacement of cutters, characterized in that: The machine comprises a frame (1), wherein the top center of the frame (1) is fixedly connected to a chassis (2), a group of rotating shafts (3) are arranged inside the chassis (2), both ends of a group of rotating shafts (3) pass through the chassis (2), a group of rotating shafts (3) are detachably and fixedly connected to multiple groups of cutting discs (4), the multiple groups of cutting discs (4) are located inside the chassis (2), a first gap (5) is provided between each group of the multiple cutting discs (4), and the first gaps (5) between each group of cutting discs (4) on different rotating shafts (3) are staggered.

2. A double-shaft shredder with easy-to-replace cutter (8) according to claim 1, characterized in that: The rotating shaft (3) is located inside the case (2) and is provided with a hexagonal prism surface (6), and each surface of the hexagonal prism surface (6) is provided with a plurality of equidistant threaded holes (7).

3. A double-shaft shredder with easy-to-replace cutter according to claim 2, characterized in that: Each group of cutting discs (4) is composed of three cutting knives (8), and the three cutting knives (8) are distributed in a circular shape on the rotating shaft (3). The cutting knives (8) each include a cutting seat (9), and the cutting seat (9) is provided with a group of abutment surfaces (10) on one side close to the rotating shaft (3). A group of through holes (11) are provided on one side of the outer cylindrical surface of the cutting seat (9), and the group of through holes (11) respectively penetrate the group of abutment surfaces (10). A cutting body (12) is provided on the other side of the outer cylindrical surface of the cutting seat (9), and a cutting head (13) is provided on the side of the cutting body (12) away from the cutting seat (9).

4. A double-shaft shredder with easy-to-replace cutter according to claim 3, characterized in that: The cutter seat (9), the cutter body (12) and the cutter head (13) are integrally formed; the side of the cutter body (12) away from the through hole (11) is coplanar with a side surface of the cutter seat (9); the cutter (8) is threadedly connected to the threaded hole (7) through a bolt (14) passing through the through hole (11) so as to be detachably fixedly connected to the rotating shaft (3).

5. A double-shaft shredder with easy-to-replace cutter according to claim 4, characterized in that: The spacing between the threaded holes (7) on the same surface of the hexagonal prism surface (6) is equal to the spacing between the through holes (11) on two adjacent cutter seats (9); when the cutter (8) is detachably connected to the rotating shaft (3) by means of bolts (14), a group of abutment surfaces (10) on the cutter seat (9) respectively abut against two adjacent surfaces of the hexagonal prism surface (6).

6. A double-shaft shredder with easy-to-replace cutter according to claim 1, characterized in that: Motors (15) are provided on both sides of the top chassis (2) of the frame (1), and a reducer (16) is provided at the output end of the motor (15). The output end of the motor (15) is fixedly connected to the input end of the reducer (16), and the output end of the reducer (16) is fixedly connected to the rotating shaft (3).

7. A double-shaft shredder with easy-to-replace cutter according to claim 1, characterized in that: A plurality of tooth plates (17) are provided on the front and rear side surfaces inside the chassis (2), and a partition plate (18) is provided between each of the tooth plates (17). The thickness of the partition plate (18) is the same as the thickness of the first gap (5). The protruding portion of the tooth plate (17) faces the first gap (5), and the tip of the protruding portion of the tooth plate (17) is located below the horizontal symmetry plane of the two rotating shafts (3).

Images