A fine paper shredder

Abstract

The utility model discloses a kind of fine paper shredder, including fixedly connected pulverization bin and feed bin, hinged cover is hinged on pulverization bin, cover is fixedly connected with pulverization bin by fixed bolt, the both sides of pulverization bin are welded with support, support is fixedly connected with bearing seat, bearing seat is rotatably connected with shaft, the end of shaft is fixedly connected with hand wheel and belt pulley respectively, equal interval fixed connection is carried out on shaft with partition, four fixed rods are fixedly connected in the four corners of partition, recess is set up on four fixed rods, flail is movably connected on the fixed rod between adjacent two partitions, flail is movably connected on recess, sieve plate is fixedly connected in the bottom of pulverization bin, the bottom of pulverization bin is symmetrically provided with discharge port. Advantage lies in, improve the confidentiality of waste paper, fibrosis of flocculent waste paper is better, more conducive to subsequent processing and recycling of waste paper, hinged cover on pulverization bin is convenient for equipment overhaul and maintenance.

Description

Technical Field

[0001] This utility model belongs to the technical field of batch paper shredding equipment, specifically relating to a fine paper shredding device. Background Technology

[0002] A paper shredder is a device used to shred waste paper. Its main function is to cut waste paper into powder or fibers, destroying the physical form of the paper to meet confidentiality requirements. It uses staggered blades to cut waste paper and is mainly used for document confidentiality work in enterprises and institutions.

[0003] A utility model patent with authorization number CN222152293U discloses a high-efficiency large-scale paper shredder, including a base, a shredding box on the base, a discharge port at the bottom of the shredding box, and a shredding assembly on the shredding box. The shredding assembly includes a motor, a main pulley at the output end of the motor, a secondary pulley on one side adjacent to the main pulley, a belt connecting the main pulley and the secondary pulley, and a power shaft on the secondary pulley. The power shaft passes through the shredding box, and multiple shredding discs are mounted on the power shaft inside the shredding box, with shredding blades on both sides of the shredding discs. Paper is fed in along the feed ramp, the motor is started, and the motor drives the main pulley to rotate. Through the belt transmission, the shredding discs and shredding blades rotate at high speed, thereby shredding the paper. The shredded paper is then sucked in by a suction fan and sent to a collection cylinder. This design has a novel structure and is suitable for continuous shredding and recycling of large quantities of paper, improving shredding efficiency.

[0004] While the above technical solution can achieve batch shredding of waste paper, the confidentiality of the shredded waste paper is low. The shredded waste paper is in fragments, which are not convenient for subsequent processing and recycling. Utility Model Content

[0005] The purpose of this invention is to provide a fine paper shredder to solve the problems of existing paper shredders cutting waste paper into fragments, resulting in low confidentiality, and the fragmented waste paper being inconvenient for subsequent processing and recycling.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a fine paper shredding device, comprising a shredding chamber and a feeding chamber fixedly connected, an inspection cover hinged to the shredding chamber, the inspection cover being fixedly connected to the shredding chamber by fixing bolts, a motor being provided on one side of the shredding chamber, a base being fixedly connected to the bottom of the shredding chamber and the motor, supports being welded to both sides of the shredding chamber, bearing seats being fixedly connected to the supports, a rotating shaft being rotatably connected between the bearing seats, a manual wheel and a pulley being fixedly connected to the ends of the rotating shaft respectively, the pulley being connected to the drive shaft of the motor by a belt, partition plates being fixedly connected at equal intervals on the rotating shaft, four fixing rods being fixedly connected to the four corners of the partition plates respectively, grooves being provided on the four fixing rods, and a movably connected blade being movably connected to the fixing rod between two adjacent partition plates, the blade being movably connected to the groove, a screen plate being fixedly connected to the bottom of the shredding chamber, and discharge ports being symmetrically provided at the bottom of the shredding chamber.

[0007] Preferably, the blades on two adjacent fixed rods are staggered.

[0008] Preferably, cutting strips are integrally formed on both outer walls of the swivel cutter.

[0009] Preferably, several noise reduction plates are provided on the inner walls of the crushing chamber and the maintenance cover, and the noise reduction plates are fixed to the inner walls of the crushing chamber and the maintenance cover by fixing bolts.

[0010] Preferably, the noise reduction board is integrally molded with raised ridges.

[0011] The advantages of this utility model are as follows: four fixed rods are fixedly connected to the four corners of the partition plate, and each fixed rod is movably connected to a sling cutter. Under the high-speed rotation of the rotating shaft, the sling cutter is thrown outwards under the action of centrifugal force. Through the cooperation of the high-speed rotating shaft, the partition plate, and the sling cutter, the fragmented waste paper that has been initially cut can be finely cut again, cutting the fragmented waste paper into flocculent waste paper. The flocculent waste paper has almost no visible text, which improves the confidentiality of the waste paper. The flocculent waste paper has better fiberization, which is more conducive to the subsequent processing and recycling of waste paper. The hinged maintenance cover on the crushing chamber facilitates the inspection and maintenance of the equipment. The noise reduction plate on the inner wall of the crushing chamber and the maintenance cover can not only reduce the noise generated by the equipment, but also the convex ridges on the noise reduction plate can further improve the formation of the waste paper flocculent. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the cutting tool of this utility model.

[0014] Figure 3 This is a schematic diagram of the structure of the screen plate and the cutting tool of this utility model.

[0015] Figure 4 This is a schematic diagram of the structure of the inspection cover after it is opened.

[0016] Figure 5 This utility model Figure 2 A magnified schematic diagram of part A in the middle.

[0017] The meanings of the labels in the attached drawings are as follows: 1. Crushing chamber; 2. Feeding chamber; 3. Inspection cover; 4. Motor; 5. Base; 6. Support; 7. Bearing seat; 8. Rotating shaft; 9. Manual wheel; 10. Belt pulley; 11. Divider plate; 12. Fixing rod; 13. Groove; 14. Thrusting knife; 15. Screen plate; 16. Discharge port; 17. Cutting strip; 18. Noise reduction plate; 19. Raised ridge. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] like Figures 1 to 5 The illustrated fine paper shredding device includes a shredding chamber 1 and a feeding chamber 2 fixedly connected. The feeding chamber 2 is connected to the conveyor belt of the preliminary shredding device. Shredded waste paper, after preliminary cutting, is conveyed into the feeding chamber 2 via the conveyor belt. A maintenance cover 3 is hinged to the shredding chamber 1 and fixedly connected to it by bolts. When maintenance of the cutting blades is required, the bolts on the maintenance cover 3 are removed to open it for maintenance. A motor 4 is located on one side of the shredding chamber 1. A base 5 is fixedly connected to the bottom of the shredding chamber 1 and the motor 4. Supports 6 are welded to both sides of the shredding chamber 1. Bearing seats 7 are fixedly connected to the supports 6. A rotating shaft 8 is rotatably connected between the bearing seats 7. A manual wheel 9 and a pulley 10 are fixedly connected to the ends of the rotating shaft 8. During maintenance, the operator can manually rotate the manual wheel 9 to control the rotation of the rotating shaft 8, thereby controlling the cutting blades and... The partition plates are inspected. The pulley 10 is connected to the drive shaft of the motor 4 via a belt. The partition plates 11 are fixedly connected at equal intervals on the rotating shaft 8. Four fixing rods 12 are fixedly connected to the four corners of the partition plates 11. The four fixing rods 12 have grooves 13. The fixing rods 12 between two adjacent partition plates 11 are movably connected to the throwing blades 14. The throwing blades 14 are movably connected to the grooves 13. The grooves 13 limit the centrifugal swing of the throwing blades 14. The bottom of the crushing chamber 1 is fixedly connected to the screen plate 15. The bottom of the crushing chamber 1 is symmetrically provided with discharge ports 16. The discharge ports 16 on both sides are connected to air valves and connected to the exhaust fan through air ducts. The flocculent waste paper is filtered through the screen plate 15 under the action of the exhaust fan. The larger flocculent waste paper is isolated above the screen plate 15. The exhaust fan and the air valves work together to suck out the flocculent waste paper and transport it to the baling equipment for baling.

[0020] To further improve the cutting effect of fragmented waste paper and make it more fibrous, the blades 14 on the two adjacent fixed rods 12 are staggered, and cutting strips 17 are integrally formed on the outer walls of both sides of the blades 14.

[0021] In order to reduce noise during equipment use and improve the flocculent treatment of fragmented waste paper, several noise reduction plates 18 are provided on the inner walls of the crushing chamber 1 and the maintenance cover 3. The noise reduction plates 18 are fixed to the inner walls of the crushing chamber 1 and the maintenance cover 3 by fixing bolts, and the noise reduction plates 18 are integrally formed with protruding ridges 19.

[0022] The working process of this utility model is as follows: First, the motor 4 is started, and the waste paper, after preliminary cutting, is cut into fragments. The fragments of waste paper are conveyed from the feeding bin 2 to the crushing bin 1 via a conveyor belt. Second, the motor 4, through the belt and pulley 10, causes the rotating shaft 8 to rotate at high speed. The rotating shaft 8 drives the separator plate 11 and the sling cutter 14 to rotate around the center of the rotating shaft 8, cutting the fragments of waste paper falling into the crushing bin 1. At the same time, under the action of centrifugal force, the sling cutter 14 swings outward. The sling cutter 14, in conjunction with the noise reduction plate 18, continuously grinds the fragments of waste paper. With the combination of cutting and grinding, the fragments of waste paper are processed into flocculent material. The flocculent waste paper makes the text on the waste paper almost invisible, thus improving the confidentiality of the waste paper. This process improves the fiberization of waste paper, which is beneficial for its recycling and reuse. Secondly, by starting the exhaust fan, waste paper smaller than the 15 mesh openings of the screen plate is sucked out and transported through the discharge port to the waste paper baling equipment for baling the fibrous waste paper. Finally, after the shredder has been used for a period of time, internal cleaning and maintenance are required. The fixing bolts on the inspection cover 3 and the shredding chamber 1 are removed, allowing the hinged inspection cover 3 to be opened. Workers can then manually rotate the shaft 8 to maintain the throwing knife 14 and the partition plate 11, while simultaneously cleaning the remaining waste paper inside the shredding chamber 1. After cleaning, the inspection cover 3 is then placed back on the shredding chamber 1 and secured with the fixing bolts.

[0023] The above description is merely a preferred embodiment of this utility model. The technical solution of this utility model is not limited thereto. It should be noted that, for those skilled in the art, based on the technical teachings provided by this utility model and as common knowledge in the field, other equivalent modifications and improvements can be made, which should also be considered within the protection scope of this utility model.

Claims

1. A fine paper shredder, characterized in that: The device includes a crushing chamber (1) and a feeding chamber (2) that are fixedly connected. A maintenance cover (3) is hinged to the crushing chamber (1) and fixedly connected to the crushing chamber (1) by fixing bolts. A motor (4) is provided on one side of the crushing chamber (1). A base (5) is fixedly connected to the bottom of the crushing chamber (1) and the motor (4). Supports (6) are welded to both sides of the crushing chamber (1). Bearing seats (7) are fixedly connected to the supports (6). A rotating shaft (8) is rotatably connected between the bearing seats (7). A manual wheel (9) and a belt pulley (10) are fixedly connected to the ends of the rotating shaft (8). The pulley (10) is connected to the drive shaft of the motor (4) via a belt. A partition plate (11) is fixedly connected at equal intervals on the rotating shaft (8). Four fixed rods (12) are fixedly connected to the four corners of the partition plate (11). Grooves (13) are provided on the four fixed rods (12). A throwing knife (14) is movably connected to the fixed rod (12) between two adjacent partition plates (11). The throwing knife (14) is movably connected to the groove (13). A screen plate (15) is fixedly connected to the bottom of the crushing chamber (1). A discharge port (16) is symmetrically provided at the bottom of the crushing chamber (1).

2. The fine paper shredder as described in claim 1, characterized in that: The blades (14) on two adjacent fixed rods (12) are staggered.

3. The fine paper shredder as described in claim 2, characterized in that: Cutting strips (17) are integrally formed on both outer walls of the spade (14).

4. The fine paper shredder as described in claim 3, characterized in that: Several noise reduction plates (18) are provided on the inner walls of the crushing chamber (1) and the maintenance cover (3). The noise reduction plates (18) are fixed to the inner walls of the crushing chamber (1) and the maintenance cover (3) by fixing bolts.

5. A fine paper shredder as described in claim 4, characterized in that: The noise reduction plate (18) is integrally formed with protruding ridges (19).

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