Multi-stage straw chopping mechanism

Abstract

The utility model provides a multistage straw chopping mechanism which comprises a machine frame, a shell and a chopping device, the shell is cylindrical and is fixed on the machine frame, and the chopping device is arranged in the shell. The chopping device comprises a rotating shaft, the two ends of the rotating shaft are connected with bearings, the bearings are connected with bearing seats, the bearing seats are fixedly connected to the rack, and a cutting device is arranged on the rotating shaft. A pair of cut-off tools is arranged on the left side of the cut-off device. A chopping mechanism is arranged on the left side of the cut-off knife and comprises a rotating roller fixedly connected with the rotating shaft, and a plurality of groups of chopping knives are arranged on the rotating roller in a staggered mode. And a plurality of stop levers are arranged at the bottom of the shell corresponding to the cut-off knife and the chopping knife. The multi-stage straw chopping mechanism is high in working efficiency, one-time forming of corn straw from straw to particles can be achieved, secondary processing is not needed, and a large amount of manpower and material resources are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of straw crushing, in particular to a multi-stage straw chopping mechanism. Background Art

[0002] Straw is the general term for the stem, leaves and ears of mature corn, usually the remaining part of corn after the seeds are harvested. More than half of the products of crop photosynthesis are present in straw. Straw is rich in nitrogen, phosphorus, potassium, calcium, magnesium and organic matter, and is a multi-purpose renewable biological resource. Straw is also a roughage, characterized by a high crude fiber content of 30%-40%, and contains lignin, etc. Although lignin cellulose cannot be used by pigs and chickens, it can be absorbed and used by ruminants such as cattle and sheep. After the straw is crushed, it can be made into various agricultural by-products and recycled. The existing straw crusher crushes the straw particles into large particles, and the machine is prone to jamming inside, affecting the crushing efficiency. Utility Model Content

[0003] In order to solve the above technical problems, the present application provides a multi-stage straw chopping mechanism, which is implemented by the following technical solutions:

[0004] A multi-stage straw chopping mechanism comprises a frame, an outer shell and a chopping device. The outer shell is cylindrical and fixed on the frame, and the chopping device is placed in the outer shell.

[0005] The shredding device includes a rotating shaft, both ends of the rotating shaft are connected to bearings, the bearings are connected to bearing seats, the bearing seats are fixedly connected to the frame, the rotating shaft is provided with a cutting device, the cutting device includes two connecting plates, the two connecting plates are fixedly connected to the rotating shaft, a plurality of cutting blades are fixedly connected in a circular array between the two connecting plates, the cutting blades include a blade plate and a blade, and the cutting blades are installed at an angle.

[0006] A pair of cutting knives are arranged on the left side of the cutting device. The two cutting knives are in the shape of a letter "I". The two blades of the cutting knives are arranged opposite to each other. The cutting knives are fixedly connected to the knife seat by bolts, and the knife seat is fixedly connected to the rotating shaft.

[0007] A shredding mechanism is provided on the left side of the cutting knife, and the shredding mechanism includes a rotating roller fixedly connected to the rotating shaft, and a plurality of groups of shredding knives are staggered on the rotating roller, and each group of the shredding knives includes two blades arranged opposite to each other in the shape of an "I", and a plurality of trapezoidal fixed blocks are arranged in parallel in the shape of an "I" on the inner walls of the front and rear sides of the shell corresponding to the shredding knives, and a cutting groove is formed between two adjacent fixed blocks. When the shredding knife moves to the position of the fixed block, it is placed in the cutting groove.

[0008] A plurality of baffle bars are arranged at the bottom of the shell corresponding to the cutting knife and the chopping knife. When the chopping knife moves to a position relative to the baffle bars, the distance between the bottom of the chopping knife and the top of the baffle bars is 1-3 mm.

[0009] As a preferred solution, a feed port is provided on one side of the shell, and the cutting device is provided at a position corresponding to the feed port.

[0010] As a preferred solution, the cutting blade is inclined at 5°-10°.

[0011] As a preferred solution, a plurality of discharge plates are provided in a circular array on the left side of the rotating roller close to the left side wall of the shell, and a discharge hopper is provided on the shell corresponding to the discharge plate, and the discharge hopper is arranged tilted downward.

[0012] As a preferred solution, the chopping knife has a thickness of 5-12 mm.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the multi-stage straw shredding mechanism of the utility model has high working efficiency, can realize the one-time forming of corn stalks from stalks to particles, and does not need to be processed secondary, thus saving a lot of manpower and material resources; the setting of the cutting blade, the cutting knife and the shredding knife guarantees the crushing effect to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the utility model

[0017] Figure 3 It is a right view structural schematic diagram of the utility model;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model without the upper shell;

[0019] Figure 5 This is a schematic diagram of the structure of the utility model when the upper shell is removed;

[0020] Figure 6 It is a three-dimensional structural schematic diagram of the cutting device, cutting knife and shredding mechanism of the utility model. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0022] A multi-stage straw chopping mechanism comprises a frame 1, a shell 2 and a chopping device 3. The shell 2 is cylindrical and fixed on the frame 1. The chopping device 3 is placed in the shell 2.

[0023] The shredding device 3 includes a rotating shaft 301, both ends of the rotating shaft 301 are connected to bearings 302, the bearings 302 are connected to bearing seats 303, the bearing seats 303 are fixedly connected to the frame 1, and a cutting device 4 is provided on the rotating shaft 301, and the cutting device 4 includes two connecting plates 41, and the two connecting plates 41 are fixedly connected to the rotating shaft 301. A plurality of cutting blades 42 are fixedly connected in a circular array between the two connecting plates 41, and the cutting blades 42 include a blade plate 43 and a blade 44, and the cutting blades 42 are installed at an angle.

[0024] A pair of cutting knives 5 are provided on the left side of the cutting device 4. The two cutting knives 5 are in a "one" shape. The blades 51 of the cutting knives 5 are arranged opposite to each other. The cutting knives 5 are fixedly connected to the knife seat 52 by bolts, and the knife seat 52 is fixedly connected to the rotating shaft 301.

[0025] A shredding mechanism 6 is provided on the left side of the cutting knife 5, and the shredding mechanism 6 includes a rotating roller 61 fixedly connected to the rotating shaft 301, and a plurality of groups of shredding knives 62 are staggeredly arranged on the rotating roller 61, and each group of the shredding knives 62 includes two blades 63 arranged opposite to each other in the shape of an "I", and a plurality of trapezoidal fixed blocks 7 are arranged in parallel in the shape of an "I" on the front and rear inner walls of the housing 2 corresponding to the shredding knives 62, and a cutting groove 8 is formed between two adjacent fixed blocks 7. When the shredding knives 62 move to the position of the fixed block 7, they are placed in the cutting groove 8.

[0026] A plurality of baffle bars 9 are provided at the bottom of the housing 2 corresponding to the cutting knife 5 and the chopping knife 62. When the chopping knife 62 moves to a position relative to the baffle bars 9, the distance between the bottom of the chopping knife 62 and the top of the baffle bars 9 is 1-3 mm.

[0027] Furthermore, a feed port 21 is provided on one side of the shell 2 , and the cutting device 4 is provided at a position corresponding to the feed port 21 .

[0028] Furthermore, the cutting blade 42 is inclined at 5°-10°.

[0029] Furthermore, a plurality of discharge plates 10 are provided in a circular array on the left side of the rotating roller 61 close to the left side wall of the shell 2 , and a discharge hopper 11 is provided on the shell 2 corresponding to the discharge plates 10 , and the discharge hopper 11 is arranged to be inclined downward.

[0030] Furthermore, the chopping knife 62 has a thickness of 5-12 mm.

[0031] When the multi-stage straw chopping mechanism is in use, straw is fed into the outer shell 2 from the feed port 21, and the power device drives the rotating shaft 301 to rotate. As the rotating shaft 301 rotates, the cutting device 4 rotates accordingly. As the cutting blade 42 rotates, the cutting blade 42 cuts the continuously entering straw into segments. The cut straw is cut into smaller segments as the cutting knife 5 rotates, which is convenient for subsequent chopping. The straw cut into small segments enters the chopping mechanism 6.

[0032] On the inner walls of the front and rear sides of the housing 2 corresponding to the chopping knife 62, a plurality of trapezoidal fixed blocks 7 are arranged in a "one" shape in parallel, and a cut groove 8 is formed between two adjacent fixed blocks 7. A plurality of baffles 9 are provided at the bottom of the housing 2 corresponding to the cutting knife 5 and the chopping knife 62. When the chopping knife 62 moves between the cut grooves 8 and the cutting knife 5 and the chopping knife 62 move to the minimum distance from the baffle 9, a guillotine-like shape is formed, which is not easy to get stuck during operation. Such a design enables the cutting knife 5 and the chopping knife 62 to cut the straw into relatively fine particles, and the chopped straw is sent out from the discharge hopper 11 through the discharge plates 10.

[0033] The chopping knife 62 is 5-12 mm thick, can exert greater pressure and shear force on the straw, and is not easily damaged during use.

[0034] The specific implementation of the utility model is described in detail above, but it is only used as an example. The utility model is not limited to the specific implementation cases described above, and equivalent modifications to the utility model are also within the protection scope of the utility model.

Claims

1. A multi-stage straw chopping mechanism, characterized in that: It comprises a frame (1), a shell (2), and a shredding device (3); the shell (2) is cylindrical and fixed on the frame (1); and the shredding device (3) is placed inside the shell (2); The shredding device (3) comprises a rotating shaft (301), both ends of the rotating shaft (301) are connected to bearings (302), the bearings (302) are connected to bearing seats (303), the bearing seats (303) are fixedly connected to the frame (1), the rotating shaft (301) is provided with a cutting device (4), the cutting device (4) comprises two connecting plates (41), the two connecting plates (41) are fixedly connected to the rotating shaft (301), a plurality of cutting blades (42) are fixedly connected in a circular array between the two connecting plates (41), the cutting blades (42) comprise a blade plate (43) and a blade 1 (44), and the cutting blades (42) are installed at an angle; A pair of cutting knives (5) are provided on the left side of the cutting device (4), the two cutting knives (5) are in the shape of a letter "I", the two blades (51) of the cutting knives (5) are arranged opposite to each other, the cutting knives (5) are fixedly connected to a knife seat (52) by bolts, and the knife seat (52) is fixedly connected to the rotating shaft (301); A shredding mechanism (6) is provided on the left side of the cutting knife (5), the shredding mechanism (6) comprising a rotating roller (61) fixedly connected to the rotating shaft (301), a plurality of groups of shredding knives (62) being arranged alternately on the rotating roller (61), each group of the shredding knives (62) comprising two blades (63) arranged opposite to each other in the shape of a letter "I", a plurality of trapezoidal fixed blocks (7) are arranged in parallel in the shape of a letter "I" on the inner walls of the front and rear sides of the housing (2) corresponding to the shredding knives (62), a cutting groove (8) is formed between two adjacent fixed blocks (7), and the shredding knives (62) are placed in the cutting groove (8) when they move to the position of the fixed block (7); A plurality of blocking rods (9) are provided at the bottom of the housing (2) corresponding to the cutting knife (5) and the chopping knife (62); when the chopping knife (62) moves to a position relative to the blocking rod (9), the distance between the bottom of the chopping knife (62) and the top of the blocking rod (9) is 1-3 mm.

2. The multi-stage straw chopping mechanism according to claim 1, characterized in that: A feed inlet (21) is provided on one side of the housing (2), and the cutting device (4) is provided at a location corresponding to the feed inlet (21).

3. The multi-stage straw chopping mechanism according to claim 1, characterized in that: The cutting blade (42) is inclined at 5°-10°.

4. The multi-stage straw chopping mechanism according to claim 1, characterized in that: A plurality of discharge plates (10) are provided in a circular array on the left side of the rotating roller (61) close to the left side wall of the outer shell (2), and a discharge hopper (11) is provided on the outer shell (2) corresponding to the discharge plates (10), and the discharge hopper (11) is arranged to be inclined downward.

5. The multi-stage straw chopping mechanism according to claim 1, characterized in that: The chopping knife (62) has a thickness of 5-12 mm.

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