Dustproof structure for granulator

Abstract

The dustproof structure comprises a shell, one side wall of the shell is fixedly connected with a fixing cover, the upper end of the shell is provided with a feeding port, the inner top of the shell is fixedly connected with two material guiding plates, two pressing rollers are rotationally connected between the inner walls of the two sides of the shell, and the two pressing rollers are fixedly connected with the fixing cover. A rotating shaft is rotationally connected between the inner walls of the two sides of the shell, a plurality of smashing rods are fixedly connected to the outer wall of the rotating shaft, a net cage is arranged in the shell, a collecting box is placed at the inner bottom of the shell, a filter screen is installed on the inner wall of one side of the shell, and a reciprocating lead screw is rotationally connected between the inner walls of the two sides of the fixing cover. The reciprocating lead screw is in threaded connection with a sliding block. And the reciprocating lead screw, the rack, the second gear and other structures are arranged, so that the rotating rod can periodically rotate forwards and backwards, then the multiple dust collection heads swing within a certain angle range, the dust collection range of the dust collection heads is enlarged, and the dust collection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of granulator technology, and in particular to a dustproof structure for granulators. Background Technology

[0002] The dry granulator uses dry roller pressing technology to compress powdery materials with a moisture content of ≤5% into flakes or blocks. After crushing, granulation and screening processes, the flakes and blocks are transformed into granules that meet the requirements. No additives are needed; dry powder is directly granulated. The strength of the granules can be adjusted by regulating the pressure of the rollers.

[0003] However, dust is easily generated during the granulation process of materials. The overflowing dust will pollute the workshop environment and affect the health of the workers. When dust is absorbed by a dust collection device, the location is usually fixed, resulting in a limited dust collection range. A large amount of dust is difficult to be removed in time. Therefore, we need to consider how to solve this problem. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dustproof structure for a granulator. This structure includes a reciprocating screw, rack, and second gear, which allows the rotating rod to periodically rotate in both directions. This, in turn, causes multiple suction heads to oscillate within a certain angle range, expanding the suction range of the suction heads and improving suction efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A dustproof structure for a granulator includes a housing, a fixed cover fixedly connected to one side wall of the housing, a feed inlet at the upper end of the housing, two guide plates fixedly connected to the inner top of the housing, two pressure rollers rotatably connected between the inner walls of the housing, a rotating shaft rotatably connected between the inner walls of the housing, multiple crushing rods fixedly connected to the outer wall of the rotating shaft, a mesh box inside the housing, a collection box placed at the inner bottom of the housing, a filter screen installed on one side inner wall of the housing, and a fixed cover rotatably connected between the inner walls of the fixed cover. A reciprocating lead screw is connected to the fixed cover, and a slider is threaded onto the reciprocating lead screw. A rack is fixedly connected to one end of the slider. A rotating rod is rotatably connected to the inner bottom of the fixed cover. A second gear is fixedly connected to the outer wall of the rotating rod, and the second gear meshes with the rack. A fixed plate is fixedly connected to the upper end of the rotating rod. A rotating plate is fixedly connected to the side wall of the fixed plate. The rotating plate is hollow inside, and multiple dust suction heads are fixedly connected to the side wall of the rotating plate. A fan is installed at the upper end of the fixed cover, and the air inlet of the fan communicates with the interior of the rotating plate.

[0007] Preferably, one end of each of the two pressure rollers extends to the outside and is fixedly connected to a first gear, the two first gears meshing, and a first motor is installed on the outer wall of the housing. The output shaft of the first motor extends into the housing and is fixedly connected to the other end of one of the pressure rollers.

[0008] Preferably, the other end of the other pressure roller and one end of the rotating shaft both extend to the outside and are connected by a first transmission mechanism. The first transmission mechanism includes two first pulleys, which are respectively mounted on the other pressure roller and the outside end of the rotating shaft. The two first pulleys are connected by a first belt drive.

[0009] Preferably, a plurality of telescopic rods are installed on the inner wall of the other side of the shell, the telescopic end of each telescopic rod is fixedly connected to one side wall of the net cage, and a spring is sleeved on the outer wall of each telescopic rod, and the two ends of each spring are elastically connected to the inner wall of the shell and one side wall of the net cage, respectively.

[0010] Preferably, a drive shaft is rotatably connected between the inner walls of the two sides of the housing, and two cams are fixedly connected to the outer wall of the drive shaft. Both cams cooperate with the other side wall of the mesh box. A second motor is installed on the outer wall of the housing, and the end of the output shaft of the second motor extends into the housing and is fixedly connected to one end of the drive shaft.

[0011] Preferably, one end of the reciprocating lead screw extends to the outside and is connected to the output shaft of the second motor via a second transmission mechanism. The second transmission mechanism includes two second pulleys, which are respectively mounted on the outside end of the reciprocating lead screw and the output shaft of the second motor, and are connected by a second belt drive.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. By setting up a reciprocating lead screw, rack and pinion and second gear, the rotating rod can periodically rotate in both directions. Compared with the fixed position dust collection structure, this method allows multiple dust collection heads to cover a larger space, reduces dust residue in the housing and fixed cover, further reduces the dust content in the workshop and improves dust collection efficiency.

[0014] 2. The structure is equipped with telescopic rods, springs, and cams. The cams continuously rotate and strike the screen box. Under the synergistic action of the telescopic rods and springs, the screen box vibrates. This can prevent material particles from clogging the screening holes, accelerate the passage of materials that meet the particle size requirements through the screening holes into the collection box, and also promote the raising of dust for easy collection. Attached Figure Description

[0015] Figure 1This is a schematic diagram of a dustproof structure for a granulator proposed in this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the front cross-section;

[0017] Figure 3 for Figure 2 Enlarged view of point A;

[0018] Figure 4 for Figure 1 Rear view diagram;

[0019] Figure 5 for Figure 1 A schematic diagram of the upper cross-section;

[0020] Figure 6 for Figure 5 Enlarged view of point B.

[0021] In the diagram: 1. Shell, 2. Fixing cover, 3. Feed inlet, 4. Guide plate, 5. Pressure roller, 6. First gear, 7. First motor, 8. Rotating shaft, 9. Crushing rod, 10. First transmission mechanism, 11. Wire mesh box, 12. Telescopic rod, 13. Spring, 14. Drive shaft, 15. Cam, 16. Second motor, 17. Collection box, 18. Filter screen, 19. Reciprocating screw, 20. Second transmission mechanism, 21. Slider, 22. Rack, 23. Rotating rod, 24. Second gear, 25. Fixing plate, 26. Rotating plate, 27. Dust suction head, 28. Fan. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-6 A dustproof structure for a granulator includes a housing 1. Two door panels are hinged to the outer wall of the housing 1. A fixed cover 2 is fixedly connected to one side wall of the housing 1. A feed inlet 3 is provided at the upper end of the housing 1. The feed inlet 3 is provided with a sealing cover to prevent dust from overflowing during the granulation process. Two guide plates 4 are fixedly connected to the inner top of the housing 1. Both guide plates 4 are inclined. Two pressure rollers 5 are rotatably connected between the inner walls of the two sides of the housing 1. The two pressure rollers 5 rotate relative to each other to squeeze the material. One end of each pressure roller 5 extends to the outside and is fixedly connected to a first gear 6. The two first gears 6 mesh. A first motor 7 is installed on the outer wall of the housing 1. The output shaft of the first motor 7 extends into the interior of the housing 1 and is fixedly connected to the other end of one of the pressure rollers 5. A rotating shaft 8 is rotatably connected between the inner walls of the two sides of the housing 1. Multiple crushing rods 9 are fixedly connected to the outer wall of the rotating shaft 8. The crushing rods 9 crush the material flattened by the pressure rollers 5 into granules.

[0024] One end of the other pressure roller 5 and one end of the rotating shaft 8 extend to the outside and are connected by a first transmission mechanism 10. The first transmission mechanism 10 includes two first pulleys, which are respectively installed on the other pressure roller 5 and the outer end of the rotating shaft 8. The two first pulleys are connected by a first belt. A screen box 11 is provided inside the housing 1. Multiple screening holes are opened at the bottom of the screen box 11. Multiple telescopic rods 12 are installed on the inner wall of the other side of the housing 1. The telescopic end of each telescopic rod 12 is fixedly connected to one side wall of the screen box 11. A spring 13 is sleeved on the outer wall of each telescopic rod 12. The two ends of each spring 13 are elastically connected to the inner wall of the housing 1 and one side wall of the screen box 11, respectively. A transmission shaft 14 is rotatably connected between the inner walls of the two sides of the housing 1. Two cams 15 are fixedly connected to the outer wall of the transmission shaft 14. The two cams 15 cooperate with the other side wall of the screen box 11.

[0025] The outer wall of the housing 1 is equipped with a second motor 16. The output shaft of the second motor 16 extends into the housing 1 and is fixedly connected to one end of the transmission shaft 14. The second motor 16 drives the cam 15 to strike the screen box 11, which, together with the telescopic rod 12 and the spring 13, generates vibration. This not only improves the screening efficiency but also allows the dust to be raised in the screen box 11 for easy collection. A collection box 17 is placed at the bottom of the housing 1. Materials that meet the particle size requirements will fall into the collection box 17. A filter screen 18 is installed on one inner wall of the housing 1. Only dust can pass through the filter screen 18 and enter the fixed cover 2. A reciprocating screw 19 is rotatably connected between the inner walls of the two sides of the fixed cover 2. One end of the reciprocating screw 19 extends to the outside and is connected to the output shaft of the second motor 16 through a second transmission mechanism 20. The second transmission mechanism 20 includes two second pulleys. The two second pulleys are respectively installed on the outer end of the reciprocating screw 19 and the output shaft of the second motor 16. The two second pulleys are connected by a second belt drive.

[0026] The reciprocating lead screw 19 is threaded with a slider 21, and a rack 22 is fixedly connected to one end of the slider 21. A rotating rod 23 is rotatably connected to the inner bottom of the fixed cover 2. A second gear 24 is fixedly connected to the outer wall of the rotating rod 23. The second gear 24 is an incomplete gear and meshes with the rack 22. A fixed plate 25 is fixedly connected to the upper end of the rotating rod 23. A rotating plate 26 is fixedly connected to the side wall of the fixed plate 25. The rotating plate 26 is hollow inside, and multiple suction heads 27 are fixedly connected to the side wall of the rotating plate 26. All suction heads 27 are horn-shaped. The rotating plate 26 swings within a certain angle range through the coordinated operation of the reciprocating screw 19, rack 22, and second gear 24, expanding the dust collection range of the suction head 27. A fan 28 is installed at the upper end of the fixed cover 2. The air inlet of the fan 28 is connected to the inside of the rotating plate 26. The air inlet pipe connected to the air inlet of the fan 28 is a flexible hose. The air outlet of the fan 28 is connected to the external collection box through the air outlet pipe. The fan 28 continuously and stably sucks in dust and discharges it to the external collection box through the air outlet pipe, achieving effective dust collection and reducing the dust content in the workshop.

[0027] In this utility model, during use, the material enters from the feed inlet 3 and slides down through two guide plates 4 under the action of gravity. The inclined guide plates 4 can reduce the possibility of material spillage and dust raising, and make the material enter the subsequent processing area more concentratedly. Then, the first motor 7 can be started to make the corresponding pressure roller 5 rotate. Under the meshing action of the two first gears 6, the other pressure roller 5 rotates along with it, thereby squeezing the material and initially pressing the material into a sheet shape. In this process, the first transmission mechanism 10 also enables the pressure roller 5 to drive the rotating shaft 8 to rotate while squeezing the material, thereby driving the crushing rod 9 to crush the sheet material into granules.

[0028] After the crushed material falls into the screen box 11, the second motor 16 can be started, causing the drive shaft 14 to rotate, which in turn causes the two cams 15 to rotate and continuously impact the screen box 11. When the cams 15 impact the screen box 11, their impact force causes the screen box 11 to shift, and the spring 13 is compressed or stretched accordingly. Under the elastic action of the spring 13 and the support and guidance of the telescopic rod 12, the screen box 11 will rebound and generate vibration. This vibration can effectively prevent material particles from clogging the screening holes. In this way, particles that meet the particle size will fall into the collection box 17 through the screening holes, thereby reducing the disorderly flow of particles in the shell 1 and ensuring the normal falling of particles.

[0029] In the above process, after the second motor 16 starts, it will also drive the reciprocating screw 19 to rotate through the second transmission mechanism 20, thereby causing the slider 21 and rack 22 to move back and forth. Since the second gear 24 is an incomplete gear, when the rack 22 moves to mesh with the toothed part of the second gear 24, it will drive the second gear 24 to rotate, thereby causing the rotating rod 23 to rotate. When the rack 22 moves to the toothless part of the second gear 24, the second gear 24 will not rotate until the rack 22 moves in the opposite direction and meshes with the toothed part again, which will drive the second gear 24 to rotate in the opposite direction. In this way, the periodic forward and reverse rotation of the rotating rod 23 is realized, the dust collection range of the multiple dust collection heads 27 is expanded, and the fan 28 can be started. The continuous operation of the fan 28 creates a negative pressure inside the fixed cover 2. The dust generated inside the housing 1 will enter the fixed cover 2 through the filter screen 18, and then be sucked into the rotating plate 26 by the multiple dust collection heads 27, and then discharged to the external collection box by the fan 28. In this way, the dust is effectively collected, reducing the dust content in the workshop.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dustproof structure for a granulator, comprising a housing (1), characterized in that, A fixed cover (2) is fixedly connected to one side wall of the housing (1), a feed inlet (3) is provided at the upper end of the housing (1), two guide plates (4) are fixedly connected to the inner top of the housing (1), two pressure rollers (5) are rotatably connected between the inner walls of the two sides of the housing (1), a rotating shaft (8) is rotatably connected between the inner walls of the two sides of the housing (1), a plurality of crushing rods (9) are fixedly connected to the outer wall of the rotating shaft (8), a mesh box (11) is provided inside the housing (1), a collection box (17) is placed at the inner bottom of the housing (1), and a filter screen (18) is installed on one side inner wall of the housing (1). A reciprocating screw (19) is rotatably connected between the inner walls of both sides of the fixed cover (2). A slider (21) is threaded onto the reciprocating screw (19). A rack (22) is fixedly connected to one end of the slider (21). A rotating rod (23) is rotatably connected to the bottom of the fixed cover (2). A second gear (24) is fixedly connected to the outer wall of the rotating rod (23). The second gear (24) meshes with the rack (22). A fixed plate (25) is fixedly connected to the upper end of the rotating rod (23). A rotating plate (26) is fixedly connected to the side wall of the fixed plate (25). The rotating plate (26) is hollow inside. Multiple dust suction heads (27) are fixedly connected to the side wall of the rotating plate (26). A fan (28) is installed at the upper end of the fixed cover (2). The air inlet of the fan (28) is connected to the inside of the rotating plate (26).

2. The dustproof structure for a granulator according to claim 1, characterized in that, One end of each of the two pressure rollers (5) extends to the outside and is fixedly connected to a first gear (6). The two first gears (6) mesh. A first motor (7) is installed on the outer wall of the housing (1). The output shaft of the first motor (7) extends into the housing (1) and is fixedly connected to the other end of one of the pressure rollers (5).

3. The dustproof structure for a granulator according to claim 2, characterized in that, The other end of the other pressure roller (5) and one end of the rotating shaft (8) extend to the outside and are connected by a first transmission mechanism (10). The first transmission mechanism (10) includes two first pulleys, which are respectively mounted on the other pressure roller (5) and the end of the rotating shaft (8) located to the outside. The two first pulleys are connected by a first belt drive.

4. The dustproof structure for a granulator according to claim 1, characterized in that, Multiple telescopic rods (12) are installed on the inner wall of the other side of the shell (1). The telescopic end of each telescopic rod (12) is fixedly connected to one side wall of the net box (11). A spring (13) is sleeved on the outer wall of each telescopic rod (12). Both ends of each spring (13) are elastically connected to the inner wall of the shell (1) and one side wall of the net box (11), respectively.

5. The dustproof structure for a granulator according to claim 4, characterized in that, A drive shaft (14) is rotatably connected between the inner walls of the two sides of the housing (1). Two cams (15) are fixedly connected to the outer wall of the drive shaft (14). The two cams (15) cooperate with the other side wall of the net box (11). A second motor (16) is installed on the outer wall of the housing (1). The output shaft of the second motor (16) extends into the housing (1) and is fixedly connected to one end of the drive shaft (14).

6. The dustproof structure for a granulator according to claim 5, characterized in that, One end of the reciprocating screw (19) extends to the outside and is connected to the output shaft of the second motor (16) via the second transmission mechanism (20). The second transmission mechanism (20) includes two second pulleys, which are respectively mounted on the outside end of the reciprocating screw (19) and the output shaft of the second motor (16). The two second pulleys are connected by a second belt drive.

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