Spiral conveying, kneading and cutting device for corn straw fibers

Abstract

A corn straw fiber spiral conveying, kneading and cutting device comprises a cutter tooth shaft installed in a shell support and a secondary smashing and conveying mechanism installed at the end of the shell support, a kneading and cutting conveying roller is installed in a feeding bin in the shell support, and one end of the kneading and cutting conveying roller is coaxially and fixedly connected with a wheel shaft of an impeller. A plurality of kneading cutters are uniformly arranged on the side surface of the kneading and cutting conveying roller along the spiral line direction, and are fixedly connected with a roller body of the kneading and cutting conveying roller; according to the device, spiral pushing force is generated by the rolling cutters arranged on the rolling and cutting conveying rollers along the spiral line to convey straw forwards, the rolling cutters can make complete contact with the straw in the spiral conveying process, straw bodies of the straw are continuously and spirally sawed by means of sawtooth structures formed between independent blade bodies of the rolling cutters, fibers in the straw are exposed, and therefore the straw can be continuously and spirally cut. Further, straw bodies and fibers are fully smashed and separated, the straw fibers can be evenly distributed in the side wall of the composite pipe, the flexibility and the overall strength of the composite pipe are improved, and the phenomenon that the pipe is prone to breakage in the pipe manufacturing process is avoided.

Description

Technical Field

[0001] The present invention relates to the field of returning corn straw to the field, and particularly to a spiral conveying, kneading and cutting device for corn straw fibers. Background Art

[0002] The invention patent with the authorization announcement number CN114027017B discloses a corn straw returning equipment. This equipment uses a ditching device to dig deep ditches on the ground surface, and continuously sends soil from the soil inlet into the auger bin through the soil-taking knives on the ditching chain. The cutter tooth shaft crushes the corn straw and sends it into the auger bin from the straw throwing inlet. The auger sends a certain proportion of soil and straw into the secondary crushing and conveying device. The secondary-crushed straw and soil enter the conical mixer tangentially along the straw conveying pipe under the action of the impeller. The mixed medicament sprayed by the nozzle and the soil and straw are subjected to cyclone mixing in the conical mixing bin and then enter the conical extrusion bin. The compression auger inside the extrusion bin squeezes the mixture into the forming extrusion pipe, and forms a composite pipe of straw and soil under the action of the pipe forming column. The problems existing in the use of this equipment are that the stalks and fibers of the straw cannot be fully crushed and separated, resulting in the straw being crushed and distributed in the form of blocks on the side wall of the composite pipe after crushing. The fibers inside the straw cannot be fully utilized, and the effect of improving the flexibility and overall strength of the pipe by using straw fibers is not good. Cracking is likely to occur during the pipe manufacturing process, and local cracking or even collapse is likely to occur during the later irrigation process, which needs to be improved. Summary of the Invention

[0003] In order to solve the above problems, the present invention proposes a spiral conveying, kneading and cutting device for corn straw fibers.

[0004] The technical solution of the present invention is: a spiral conveying, kneading and cutting device for corn straw fibers, including a cutter tooth shaft installed inside a housing bracket and a secondary crushing and conveying mechanism installed at the end of the housing bracket. A kneading and conveying roller is installed in the feeding bin inside the housing bracket. The length of the kneading and conveying roller is the same as the length of the feeding bin. One end of the roller shaft of the kneading and conveying roller extends into the bottom of the secondary crushing and conveying mechanism from the circular feeding port and is coaxially fixedly connected to the wheel shaft of its impeller, and the other end is connected to the bearing on the end plate of the housing bracket. A plurality of kneading knives integrally in an isosceles triangle shape are evenly arranged along the spiral direction from one end to the other end on the side of the kneading and conveying roller. The distance between the kneading knives is increased as much as possible to improve its conveying capacity. The kneading knives are fixedly connected to the roller body of the kneading and conveying roller along the radial direction.

[0005] Preferably, a plurality of groove bodies are equidistantly arranged along the length direction on the side surface of the cutting edge of the kneading knife. The groove bodies are overall square grooves. The upper ends between the groove bodies on both sides of the cutting edge are connected to form a V-shaped groove. The convex ridge of the V-shaped groove is also a cutting edge structure. The V-shaped groove forms an independent cutting edge body, and a serrated structure is formed between the independent cutting edge body and the V-shaped groove.

[0006] Preferably, two straight cutting blades are symmetrically provided at both ends of the bottom of the kneading and cutting knife, the upper ends of the straight cutting blades are connected to the independent blade body, and the length direction of the straight cutting blades is consistent with the radial direction of the kneading and cutting conveying roller.

[0007] Preferably, a knife seat is provided between the kneading and cutting knife and the kneading and cutting conveying roller. The knife seat is in the shape of a square plate as a whole, and an arc-shaped notch is provided at the bottom of the knife seat. The arc-shaped notch matches the side of the roller body. The knife seat is welded and fixed to the side of the kneading and cutting conveying roller along the award, and the kneading and cutting knife is installed on the knife seat.

[0008] Preferably, both ends of the knife seat are provided with assembly holes, and both ends of the bottom of the kneading and cutting knife are correspondingly provided with bolt holes. A fastening bolt is installed between the bolt hole and the assembly hole, and a gasket is provided between the fastening spiral and the nut to ensure the firmness of the installation of the kneading and cutting knife.

[0009] Preferably, the angle between the two blades of the isosceles triangle-shaped kneading and cutting knife is α, 55°≤α≤65°.

[0010] The beneficial technical effects of the present invention are: (1) The present invention relies on the kneading and cutting blades arranged along a spiral line on the kneading and cutting conveying roller to generate a spiral pushing force to convey the straw forward, and the kneading and cutting blades can completely contact the straw during the spiral conveying process, and rely on the sawtooth structure formed between its independent blades to continuously spirally saw the straw body, exposing the fibers inside the straw, thereby achieving sufficient crushing and separation of the straw body and fibers, so that the straw fibers can be evenly distributed in the side wall of the composite pipe, thereby improving its flexibility and overall strength, avoiding the phenomenon of pipe breakage that is easy to occur during the pipe making process, and ensuring the irrigation effect of the pipe in the later stage.

[0011] (2) V-shaped grooves are evenly arranged on the blade of the kneading and cutting knife of the present invention. The independent blades between the grooves cut the straw stalks to expose the internal fibers, while allowing the fibers to continuously enter the grooves on both sides and be guided out of the grooves under the action of the spiral force, thereby avoiding repeated cutting of the fibers, effectively increasing the length of the fibers, and further enhancing the flexibility and structural strength of the composite pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention installed inside the straw returning equipment; Figure 2 yes Figure 1 AA section structural diagram; Figure 3 Figure 1 Schematic diagram of the three-dimensional structure after the feed bin is removed; Figure 4 It is a three-dimensional structural schematic diagram of the kneading and cutting conveying roller; Figure 5It is a schematic diagram of the main structure of the kneading and cutting conveying roller; Figure 6 yes Figure 5 BB-direction cross-sectional structural diagram; Figure 7 It is a three-dimensional structural schematic diagram of a kneading and cutting knife; Figure 8 and Figure 9 It is a physical diagram of the present invention.

[0013] In the figure, 11. shell bracket, 12. blade shaft, 13. secondary crushing and conveying mechanism, 131. impeller, 132. circular feed port, 14. feeding bin, 02. kneading and cutting conveying roller, 2. kneading and cutting knife, 21. trough body, 22. V-shaped groove, 23. independent blade body, 24. whole cutting blade, 25. knife seat, 26. bolt hole, 27. fastening bolt. DETAILED DESCRIPTION

[0014] Embodiment 1, see attached Figure 1-7 A corn straw fiber spiral conveying and kneading device comprises a knife tooth shaft 12 installed inside a shell bracket 11, and a secondary crushing and conveying mechanism 13 installed at the end of the shell bracket 11. A kneading and cutting conveying roller 02 is installed in a feeding bin 14 inside the shell bracket 11. The roller shaft at one end of the kneading and cutting conveying roller extends from a circular feed port 132 to the bottom of the secondary crushing and conveying mechanism 13 and is coaxially fixedly connected with the wheel shaft of its impeller 131. A plurality of kneading and cutting knives 2 in the shape of an isosceles triangle are evenly arranged from one end to the other end of the side of the kneading and cutting conveying roller 02 along the direction of its spiral line. The kneading and cutting knives 2 arranged on the kneading and cutting conveying roller 02 along the spiral line generate a spiral pushing force to convey the straw forward, and the kneading and cutting knives 2 can completely contact the straw during the spiral conveying process, and rely on the sawtooth structure formed between its independent blade bodies 23 to continuously spirally saw the straw body to expose the fibers inside the straw. The kneading and cutting knives 2 are fixedly connected to the roller body of the kneading and cutting conveying roller 02 along the radial direction.

[0015] A plurality of grooves 21 are provided at equal intervals on the side surface of the blade of the kneading and cutting knife 2 along its length direction. The upper ends of the grooves 21 on both sides of the blade are connected to each other to form a V-shaped groove 22. The V-shaped groove 22 forms an independent blade 23. A sawtooth structure is formed between the independent blade 23 and the V-shaped groove 22. The independent blades 23 between the grooves 21 cut the straw to expose the internal fibers while allowing the fibers to continuously enter the grooves 21 on both sides and be guided out of the grooves 21 under the action of the spiral force, thereby avoiding repeated cutting of the fibers and effectively increasing the length of the fibers.

[0016] There is a tool holder 25 between the kneading and cutting knife 2 and the kneading and cutting conveyor roller 02. The tool holder 25 is fixedly welded along the side of the kneading and cutting conveyor roller 02. The kneading and cutting knife 2 is installed on the tool holder 25. Assembly holes are provided at both ends of the tool holder 25. Corresponding bolt holes 26 are provided at both ends of the bottom of the kneading and cutting knife. A fastening bolt 27 is installed between the bolt hole 26 and the assembly hole. After the cutting edges on both sides of the isosceles triangle-shaped kneading and cutting knife 2 are reversed in direction, they can both be consistent with the rotation direction of the kneading and cutting conveyor roller 02. When the sharpness of the cutting edge on one side decreases and fails to meet the kneading requirements, the direction of the kneading and cutting knife 2 can be conveniently adjusted through the tool holder 25 so that the cutting edge on the other side is consistent with the rotation direction of the kneading and cutting conveyor roller 02, doubling the service life of the kneading and cutting knife 2.

[0017] Two integral cutting edges 24 are symmetrically provided at both ends of the bottom of the kneading and cutting knife 2. The length direction of the integral cutting edge is consistent with the radial direction of the kneading and cutting conveyor roller 02. A cutting force is generated at the joint between the kneading and cutting knife 2 and the roller body through the integral cutting edge 24, avoiding the phenomenon that straw is mixed with fibers and wound around the joint between the kneading and cutting knife 2 and the roller body, and ensuring its kneading and conveying effect.

[0018] The included angle between the two cutting edges of the isosceles triangle-shaped kneading and cutting knife 2 is α, and 55° ≤ α ≤ 65°.

[0019] The working process and principle of this kneading and cutting device are as follows: ① The cutter shaft 12 continuously rotates and throws corn straw into the feeding bin 14. The kneading and cutting knives 2 arranged along the spiral on the kneading and cutting conveyor roller 02 generate a spiral conveying thrust, and the straw entering the feeding bin 14 is sent from the circular feeding port 132 into the secondary crushing and conveying mechanism 13. ② During the process of the straw being conveyed in the feeding bin 14, the kneading and cutting knives 2 are in full contact with the straw, and continuously spiral-saw the straw stalks by relying on the serrated structure formed between their independent blade bodies 23, exposing the fibers inside the straw, and fully crushing and separating the straw stalks and fibers, so that the straw fibers can be evenly distributed in the side wall of the composite pipe, improving its flexibility and overall strength. ③ While the independent blade body 23 saws the straw stalks to expose the internal fibers, the fibers can continuously enter the troughs 21 on both sides, and the spiral force causes them to be led out from the troughs 21, avoiding the fibers from being repeatedly cut, increasing the length dimension of the fibers, and further enhancing the flexibility and structural strength of the composite pipe.

Claims

1. A corn straw fiber spiral conveying and kneading device, comprising a knife tooth shaft installed inside a housing bracket and a secondary crushing and conveying mechanism installed at the end of the housing bracket, characterized in that: A kneading and cutting conveying roller is installed in the feeding bin inside the shell bracket, and the roller shaft at one end of the kneading and cutting conveying roller extends from the circular feed port to the bottom of the secondary crushing and conveying mechanism and is coaxially fixedly connected with the wheel shaft of its impeller, and a plurality of kneading and cutting knives in the shape of isosceles triangles are evenly arranged along the spiral line direction from one end to the other end of the side surface of the kneading and cutting conveying roller, and the kneading and cutting knives are fixedly connected to the roller body of the kneading and cutting conveying roller along the radial direction.

2. The corn straw fiber spiral conveying, kneading and cutting device according to claim 1 is characterized in that: The side surface of the kneading and cutting knife blade is provided with a plurality of grooves at equal intervals along its length direction, the upper ends of the grooves on both sides of the blade are connected to each other to form a V-shaped groove, the V-shaped groove forms an independent blade body, and a sawtooth structure is formed between the independent blade body and the V-shaped groove.

3. The corn straw fiber spiral conveying, kneading and cutting device according to claim 2 is characterized in that: Two trimming blades are symmetrically arranged at the two ends of the bottom of the kneading and cutting knife, and the length direction of the trimming and cutting blades is consistent with the radial direction of the kneading and cutting conveying roller.

4. The corn straw fiber spiral conveying, kneading and cutting device according to claim 1 is characterized in that: A knife seat is arranged between the kneading and cutting knife and the kneading and cutting conveying roller. The knife seat is welded and fixed on the side of the kneading and cutting conveying roller along the award, and the kneading and cutting knife is installed on the knife seat.

5. The corn straw fiber spiral conveying, kneading and cutting device according to claim 4 is characterized in that: Both ends of the knife seat are provided with assembly holes, and both ends of the bottom of the kneading and cutting knife are correspondingly provided with bolt holes, and fastening bolts are installed between the bolt holes and the assembly holes.

6. The corn straw fiber spiral conveying, kneading and cutting device according to claim 1 is characterized by: The angle between the two blades of the isosceles triangle kneading and cutting knife is α, 55°≤α≤65°.

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