Straw chopping knife

Abstract

The utility model provides a straw chopping knife which comprises a rotating shaft, a cutting device is arranged at the rightmost end of the rotating shaft, the cutting device comprises two connecting discs, the two connecting discs are fixedly connected to the rotating shaft, a plurality of cutting blades are fixedly connected between the two connecting discs in a circumferential array mode, each cutting blade comprises a cutting board and a first cutting edge, and the first cutting edge is fixedly connected to the rotating shaft. And the cutting blade is obliquely mounted. A pair of cut-off tools is arranged on the left side of the cut-off device, the two cut-off tools are installed in a straight line shape, second cutting edges of the cut-off tools are oppositely arranged, the cut-off tools are fixedly connected to tool aprons through bolts, and the tool aprons are fixedly connected with a rotating shaft; 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. The straw chopping knife is high in working efficiency, one-time forming of 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 straw chopping knife. Background Art

[0002] Straw is the general term for the stems, leaves and spikes of mature crops, usually the remaining part of crops after harvesting seeds. 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 being crushed, straw can be made into various agricultural by-products for recycling. The existing straw crusher crushes the straw particles into larger 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 straw chopping knife, which is implemented by the following technical solutions:

[0004] A straw chopping knife comprises a rotating shaft, wherein a cutting device is provided at the rightmost end of the rotating shaft, wherein the cutting device comprises two connecting plates, wherein the two connecting plates are fixedly connected to the rotating shaft, and a plurality of cutting blades are fixedly connected in a circular array between the two connecting plates, wherein the cutting blades comprise a blade plate and a blade, and wherein the cutting blades are installed at an angle.

[0005] A pair of cutting knives are provided on the left side of the cutting device, and the two cutting knives are installed in an "I" shape, and 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; 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 shredding knives includes two blades arranged opposite to each other in an "I" shape.

[0006] A plurality of discharge plates are arranged in a circular array on the left side of the cutting device on the rotating roller, and a discharge bin is formed between two adjacent discharge plates.

[0007] As a preferred solution, the cutting blade is inclined at 5°-10°.

[0008] As a preferred solution, the discharge plate is in the shape of a right-angled trapezoid.

[0009] As a preferred solution, the chopping knife has a thickness of 5-12 mm.

[0010] Compared with the prior art, the beneficial effects of the utility model are: the straw shredder of the utility model has high working efficiency and can realize the one-time forming of straw from straw to particles without the need for secondary processing, thus saving a lot of manpower and material resources; the setting of the cutting blade, the cutting knife and the shredder knife ensures the crushing effect to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is a main structural schematic diagram of the utility model. DETAILED DESCRIPTION

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

[0015] A straw chopping knife comprises a rotating shaft 1, wherein a cutting device 2 is provided at the rightmost end of the rotating shaft 1, wherein the cutting device 2 comprises two connecting plates 201, wherein the two connecting plates 201 are fixedly connected to the rotating shaft 1, and a plurality of cutting blades 202 are fixedly connected in a circular array between the two connecting plates 201, wherein the cutting blades 202 comprise a blade plate 203 and a blade 204, and wherein the cutting blades 202 are installed at an angle.

[0016] A pair of cutting knives 3 are provided on the left side of the cutting device 2, and the two cutting knives 3 are installed in an "I" shape, and the two blades 31 of the cutting knives 3 are arranged opposite to each other. The cutting knives 3 are fixedly connected to the knife seat 32 by bolts, and the knife seat 32 is fixedly connected to the rotating shaft 1; a shredding mechanism 4 is provided on the left side of the cutting knife 3, and the shredding mechanism 4 includes a rotating roller 41 fixedly connected to the rotating shaft 1, and a plurality of groups of shredding knives 42 are staggered on the rotating roller 41, and each group of the shredding knives 42 includes two blades 43 arranged opposite to each other in an "I" shape.

[0017] A plurality of discharge plates 5 are arranged in a circular array on the left side of the cutting device 2 on the rotating roller 41 , and a discharge bin 51 is formed between two adjacent discharge plates 5 .

[0018] Furthermore, the cutting blade 202 is inclined at 5°-10°.

[0019] Furthermore, the discharge plate 5 is in the shape of a right-angled trapezoid.

[0020] Furthermore, the chopping knife 42 has a thickness of 5-12 mm.

[0021] When the straw chopper is in use, the straw chopper is installed in a shell, and the rotating shaft 1 is driven to rotate by an external power. As the rotating shaft 1 rotates, the cutting device 2 rotates accordingly. As the cutting blade 202 rotates, the cutting blade 202 cuts the straw into segments. The cut straw is cut into smaller segments as the cutting blade 3 rotates, which is convenient for subsequent chopping. The straw cut into small segments enters the chopping mechanism 4.

[0022] The chopping knife 42 can chop the straw into relatively small particles, and the chopped straw is sent out by the rotation of the discharge bin 51.

[0023] The chopping knife 42 is 5-12 mm thick, can exert greater pressure and shear force on the straw, and is not easily damaged during use.

[0024] The arrangement of the cutting device, the cutting knife 3 and the multi-stage cutting device of the chopping mechanism 4 enables the straw chopping knife to realize multi-stage processing of the straw with high efficiency and good chopping effect.

[0025] 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 straw chopping knife, characterized in that: The invention comprises a rotating shaft (1), wherein a cutting device (2) is provided at the rightmost end of the rotating shaft (1), wherein the cutting device (2) comprises two connecting plates (201), wherein the two connecting plates (201) are fixedly connected to the rotating shaft (1), and a plurality of cutting blades (202) are fixedly connected in a circular array between the two connecting plates (201), wherein the cutting blades (202) comprise a blade plate (203) and a blade 1 (204), and wherein the cutting blades (202) are installed at an angle; A pair of cutting knives (3) are provided on the left side of the cutting device (2), the two cutting knives (3) are installed in the shape of a letter "I", the two blades (31) of the cutting knives (3) are arranged opposite to each other, the cutting knives (3) are fixedly connected to a knife seat (32) by bolts, and the knife seat (32) is fixedly connected to the rotating shaft (1); a shredding mechanism (4) is provided on the left side of the cutting knife (3), the shredding mechanism (4) comprises a rotating roller (41) fixedly connected to the rotating shaft (1), and a plurality of groups of shredding knives (42) are staggeredly arranged on the rotating roller (41), and each group of shredding knives (42) comprises two blades (43) arranged opposite to each other in the shape of a letter "I"; A plurality of discharge plates (5) are provided in a circular array on the left side of the cutting device (2) on the rotating roller (41), and a discharge bin (51) is formed between two adjacent discharge plates (5).

2. The straw chopping knife according to claim 1, characterized in that: The cutting blade (202) is inclined at 5°-10°.

3. The straw chopping knife according to claim 1, characterized in that: The discharge plate (5) is in the shape of a right-angled trapezoid.

4. The straw chopping knife according to claim 1, characterized in that: The chopping knife (42) has a thickness of 5-12 mm.

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