Dust-free crushing device for straw fuel production

Abstract

The utility model discloses a dust-free crushing device for straw fuel production, which comprises a crushing cylinder and a support frame fixedly mounted on the surface of the crushing cylinder, a straw crushing structure is arranged in the crushing cylinder, the straw crushing structure consists of a crushing component and a screening component, and a discharging structure is arranged on the surface of the crushing cylinder. Compared with the prior art, according to the dust-free smashing device for straw fuel production, straw can be cut off and partially smashed through the cutting blades, then the straw can be completely smashed through the smashing blades, the straw is smashed in a sectional mode, the pressure of the smashing blades is relieved, and the smashing efficiency is improved. The situation that a large amount of dust is generated due to the fact that a large amount of straw is accumulated on the inner right side wall of the smashing cylinder and cannot be smashed in time is avoided, meanwhile, the cutting blades are arranged to be in a fan blade shape, when the cutting blades rotate, airflow can be driven to move rightwards, and therefore dust can be prevented from flying out of the equipment along the feeding end of the smashing cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of straw crushing equipment, in particular to a dust-free crushing device for straw fuel production. Background Art

[0002] The principle of a straw pulverizer is to use mechanical force to pulverize straw into smaller particles or fragments. Generally speaking, a straw pulverizer uses a rotating cutter or rotor to cut, tear and crush the straw entering the machine. During the pulverization process, the straw is fed into the pulverizer through the feed port and then comes into contact with the high-speed rotating cutter or rotor. The impact force and shear force generated by the rotation of the cutter or rotor act on the straw, breaking it into smaller particles, which are then discharged through the discharge port of the pulverizer.

[0003] However, when the straw crusher feeds too fast, the crusher may not be able to crush the material in time, causing some of the material to become fine particles and form dust, further aggravating the generation of dust. In order to prevent dust, most traditional straw crushers will have a dust suction structure at the discharge port, but some dust will float into the air along the feed port, which will still cause dust to fly. In response to the above defects: To this end, we propose a dust-free crushing device for straw fuel production. Utility Model Content

[0004] The utility model aims to provide a dust-free crushing device for straw fuel production to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dust-free crushing device for straw fuel production, comprising a crushing cylinder and a support frame fixedly mounted on the surface of the crushing cylinder, a straw crushing structure is arranged inside the crushing cylinder, the straw crushing structure is composed of a crushing component and a screening component, and a discharge structure is arranged on the surface of the crushing cylinder;

[0006] The crushing assembly includes a connecting shaft rotatably mounted on the inner wall of the crushing cylinder, a cutting blade and a crushing blade are fixedly mounted on the surface of the connecting shaft, and a motor that can drive the connecting shaft to rotate is fixedly mounted on the right end of the crushing cylinder;

[0007] The screening component comprises a screening cylinder, a surface of which is provided with leakage holes, a cavity is provided between the screening cylinder and the crushing cylinder, and an assembly component is provided between the screening cylinder and the crushing cylinder.

[0008] Preferably, the assembly component comprises an assembly ring fixedly mounted on the left end of the screening cylinder, the surface of the assembly ring is threadedly connected with an assembly bolt, and the left end of the crushing cylinder is provided with a threaded hole matched with the assembly bolt.

[0009] Preferably, there are multiple cutting blades, and the multiple cutting blades are arranged in a circular array on the surface of the connecting shaft, and the shape of the cutting blades is set to be fan-blade-shaped.

[0010] Preferably, the crushing blade is L-shaped, and the crushing blade is arranged on the right side of the cutting blade.

[0011] Preferably, the discharge structure comprises a discharge frame fixedly mounted on the surface of the pulverizing cylinder, and the surface of the pulverizing cylinder is provided with a discharge groove interconnected with the discharge frame.

[0012] Preferably, a dust suction pipe is fixedly mounted on the surface of the discharge frame, and one end of the dust suction pipe is connected to an external dust suction structure.

[0013] Preferably, the angle between the grinding cylinder and the support frame is 15-20 degrees.

[0014] Preferably, the inner right side wall of the pulverizing cylinder is provided with a slot for inserting the screening cylinder. Beneficial Effects

[0015] The utility model provides a dust-free crushing device for straw fuel production, which has the following beneficial effects:

[0016] 1. The straw fuel production pulverizing dust-free device is provided with a straw pulverizing structure. After the straw is put into the pulverizing tube, the straw will first be cut and partially pulverized by a rotating cutting blade. The pulverized straw will fall into the cavity along the leakage hole, and the remaining un-pulverized straw will enter the inner right wall of the pulverizing tube for accumulation. Then, the straw can be pulverized by a rotating pulverizing blade. The pulverized straw will fall into the cavity and slide to the discharge frame for discharge. Compared with the prior art, the device can cut and partially pulverize the straw by using a cutting blade, and then completely pulverize the straw by using a pulverizing blade. The segmented pulverizing of the straw is adopted, which relieves the pressure of the pulverizing blade, avoids the accumulation of a large amount of straw on the inner right wall of the pulverizing tube, and avoids the straw from being pulverized in time and generating a large amount of dust. At the same time, the cutting blade is provided as a fan blade type, and when the cutting blade rotates, the airflow can be driven to move to the right, thereby avoiding the dust from flying out of the device along the feeding end of the pulverizing tube.

[0017] 2. The dust-free crushing device for straw fuel production is provided with assembly parts. After the assembly bolts are screwed out of the threaded holes, the assembly ring will be separated from the crushing cylinder, so that the screening cylinder can be taken out, and then the screening cylinders with different apertures can be replaced according to the particle size of the straw to be crushed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2This is a schematic diagram of the front cross-section structure of the pulverizing tube of the utility model;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the crushing component of the utility model.

[0021] In the figure: 1 crushing barrel, 2 supporting frame, 3 connecting shaft, 4 cutting blade, 5 crushing blade, 6 screening barrel, 7 leakage hole, 8 cavity, 9 assembly ring, 10 assembly bolt, 11 dust suction pipe, 12 discharge frame, 13 discharge trough, 14 motor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 The utility model provides a technical solution: a dust-free crushing device for straw fuel production, comprising a crushing cylinder 1 and a support frame 2 fixedly mounted on the surface of the crushing cylinder 1, and the angle between the crushing cylinder 1 and the support frame 2 is 15-20 degrees.

[0024] A straw crushing structure is arranged inside the crushing cylinder 1, and the straw crushing structure consists of a crushing component and a screening component. The crushing component includes a connecting shaft 3 rotatably mounted on the inner wall of the crushing cylinder 1, and a cutting blade 4 and a crushing blade 5 are fixedly mounted on the surface of the connecting shaft 3 respectively. A motor 14 for driving the connecting shaft 3 to rotate is fixedly mounted on the right end of the crushing cylinder 1. There are multiple cutting blades 4, and the multiple cutting blades 4 are arranged in a circular array on the surface of the connecting shaft 3, and the shape of the cutting blade 4 is set to a fan blade type, and the shape of the crushing blade 5 is set to an L shape, and the crushing blade 5 is arranged on the right side of the cutting blade 4. The driving motor 14 can drive the cutting blade 4 and the crushing blade 5 to rotate.

[0025] After the straw is placed in the crushing tube 1, the straw will first be cut and partially crushed by the rotating cutting blade 4, and the remaining uncrushed straw will enter the inner right wall of the crushing tube 1 and accumulate, and then the straw can be crushed by the rotating crushing blade 5.

[0026] The screening assembly includes a screening barrel 6, a surface of which is provided with a leakage hole 7, a cavity 8 is provided between the screening barrel 6 and the crushing barrel 1, and an assembly component is provided between the screening barrel 6 and the crushing barrel 1, the assembly component includes an assembly ring 9 fixedly installed on the left end of the screening barrel 6, the surface of the assembly ring 9 is threadedly connected with an assembly bolt 10, and the left end of the crushing barrel 1 is provided with a threaded hole compatible with the assembly bolt 10, and the inner right side wall of the crushing barrel 1 is provided with a slot for inserting the screening barrel 6.

[0027] Insert the right end of the sieve barrel 6 into the slot, and then tighten the assembly bolt 10, so that the sieve barrel 6 can be fixed inside the crushing barrel 1. After the assembly bolt 10 is screwed out of the threaded hole, the assembly ring 9 will be separated from the crushing barrel 1, so that the sieve barrel 6 can be taken out, and then the sieve barrel 6 with different apertures can be replaced according to the particle size of the straw that needs to be crushed.

[0028] When the rotating cutting blade 4 cuts the straw and crushes part of the straw, the crushed straw will fall into the cavity 8 along the leakage hole 7. When the rotating crushing blade 5 crushes the straw, the crushed straw will also fall into the cavity 8.

[0029] A discharge structure is provided on the surface of the pulverizing drum 1, and the discharge structure includes a discharge frame 12 fixedly mounted on the surface of the pulverizing drum 1, and a discharge groove 13 interconnected with the discharge frame 12 is opened on the surface of the pulverizing drum 1, and a dust suction pipe 11 is fixedly mounted on the surface of the discharge frame 12, and one end of the dust suction pipe 11 is connected to the external dust suction structure. When the pulverized straw is in the cavity 8, the straw particles in the cavity 8 will slide into the discharge groove 13 and be discharged along the discharge frame 12. At the same time, after the straw particles enter the discharge frame 12, the external dust suction structure will absorb the dust in the straw particles along the dust suction pipe 11 to prevent the dust from being discharged.

[0030] Compared with the prior art, the device uses the cutting blade 4 to cut and partially crush the straw, and then uses the crushing blade 5 to completely crush the straw. The segmented straw crushing method relieves the pressure of the crushing blade 5, avoids the accumulation of a large amount of straw on the inner right wall of the crushing cylinder 1, resulting in the straw not being crushed in time and generating a large amount of dust. At the same time, the cutting blade 4 is set to a fan blade type. When the cutting blade 4 rotates, it can drive the airflow to move to the right, thereby preventing dust from flying along the feed end of the crushing cylinder 1 to the outside of the equipment.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust-free crushing device for straw fuel production, comprising a crushing cylinder (1) and a support frame (2) fixedly mounted on the surface of the crushing cylinder (1), characterized in that: The pulverizing cylinder (1) is provided with a straw pulverizing structure inside, the straw pulverizing structure being composed of a crushing component and a screening component, and a discharge structure is provided on the surface of the pulverizing cylinder (1); The crushing assembly comprises a connecting shaft (3) rotatably mounted on the inner wall of the crushing cylinder (1), a cutting blade (4) and a crushing blade (5) being fixedly mounted on the surface of the connecting shaft (3), and a motor (14) capable of driving the connecting shaft (3) to rotate being fixedly mounted on the right end of the crushing cylinder (1); The screening component comprises a screening cylinder (6), a surface of the screening cylinder (6) is provided with a material leakage hole (7), a cavity (8) is provided between the screening cylinder (6) and the crushing cylinder (1), and an assembly component is provided between the screening cylinder (6) and the crushing cylinder (1).

2. A dust-free crushing device for straw fuel production according to claim 1, characterized in that: The assembly component comprises an assembly ring (9) fixedly mounted on the left end of the screening cylinder (6); an assembly bolt (10) is threadedly connected to the surface of the assembly ring (9); and a threaded hole matching the assembly bolt (10) is formed at the left end of the crushing cylinder (1).

3. A dust-free crushing device for straw fuel production according to claim 1, characterized in that: The number of the cutting blades (4) is multiple, and the multiple cutting blades (4) are arranged in a circular array on the surface of the connecting shaft (3), and the shape of the cutting blades (4) is set to be fan-blade-shaped.

4. A dust-free crushing device for straw fuel production according to claim 1, characterized in that: The crushing blade (5) is configured to be L-shaped, and the crushing blade (5) is disposed on the right side of the cutting blade (4).

5. A dust-free crushing device for straw fuel production according to claim 1, characterized in that: The material discharging structure comprises a material discharging frame (12) fixedly mounted on the surface of the grinding cylinder (1), and a material discharging groove (13) communicating with the material discharging frame (12) is provided on the surface of the grinding cylinder (1).

6. A dust-free crushing device for straw fuel production according to claim 5, characterized in that: A dust suction pipe (11) is fixedly mounted on the surface of the discharge frame (12), and one end of the dust suction pipe (11) is connected to an external dust suction structure.

7. A dust-free crushing device for straw fuel production according to claim 1, characterized in that: The angle between the grinding cylinder (1) and the support frame (2) is 15-20 degrees.

8. The dust-free crushing device for straw fuel production according to claim 1, characterized in that: The inner right side wall of the crushing cylinder (1) is provided with a slot for inserting the screening cylinder (6).

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