Granulation device for rubber and plastic granulation

Abstract

The utility model discloses a grain cutting device for rubber and plastic granulation, which belongs to the field of TPE (thermoplastic elastomer) production equipment.The grain cutting device comprises a case and a feeding port fixedly mounted at the top of the outer side wall of the case, and a feeding roller for pushing plastic strips is rotatably mounted in an inner cavity of the case and close to the lower portion of the feeding port. The inner cavity of the machine box is further rotationally provided with a material pressing roller matched with the material feeding roller, the inner cavity of the machine box is further rotationally provided with a cutting knife roller used for conducting grain cutting processing on the plastic strips and located behind the material feeding roller and the material pressing roller, and the grain cutting device further comprises a discharging opening which is formed in the bottom of the outer side wall of the machine box and is opposite to the feeding opening. And a dust cleaning mechanism is arranged below the feeding roller and the cutting knife roller in the inner cavity of the case. The problems of pixel particle blockage and adsorption blockage of a filter assembly in an existing dust removal assembly can be well solved, and the dust removal effect is better.

Description

Technical Field

[0001] The utility model relates to the field of TPE production equipment, in particular to a pelletizing device for rubber pelletizing. Background Art

[0002] TPE is a thermoplastic elastomer material with the characteristics of high strength, high resilience and injection molding. In the production process of TPE, the strip-shaped rubber and plastic strips extruded by the extruder need to be cooled and then pelletized to facilitate subsequent processing.

[0003] The Chinese utility model patent with publication number CN220428934U discloses a plastic pelletizer with dust removal function. The pelletizer cleans the dust attached to the rubber and plastic strip raw materials by adding a dust removal component in the equipment chassis, which effectively solves the problem that the rubber and plastic strip raw materials are mixed with dust during pelletizing, affecting the quality of subsequent processing. However, when the device is equipped with a dust removal component, it does not take into account that when the second barrier net is blown by the fan, due to the small space in which it is located, the rubber and plastic particles are relatively light, and the discharge pipe is also in an approximately horizontal setting. This setting can easily cause the rubber and plastic particles to accumulate and adhere to the second barrier net due to the influence of wind flow, resulting in clogging of the mesh, difficulty in discharging dust, and poor cleaning effect.

[0004] Therefore, a pelletizing device for rubber pelletizing is provided to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model provides a pelletizing device for rubber pelletizing, aiming to solve the problem of poor cleaning effect of the existing dust removal component proposed in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pelletizing device for rubber pelletizing, comprising a chassis and a feed port fixedly installed on the top of the outer side wall of the chassis, a feed roller for pushing plastic strips is rotatably installed in the inner cavity of the chassis near the lower part of the feed port, a pressure roller cooperating with the feed roller is also rotatably installed in the inner cavity of the chassis, a cutting knife roller for pelletizing the plastic strips is rotatably installed in the inner cavity of the chassis behind the feed roller and the pressure roller, the pelletizing device also comprises a discharge port arranged on the bottom of the outer side wall of the chassis on the opposite side of the feed port, and a dust cleaning mechanism is arranged in the inner cavity of the chassis below the feed roller and the cutting knife roller.

[0009] In order to solve the problem of poor cleaning effect of the dust removal component in the existing pelletizer, the cleaning mechanism includes filter screens installed on two opposite surfaces of the outer side wall of the chassis, one of the filter screens is arranged coplanar with the feed port, and the other filter screen is arranged coplanar with the discharge port. A closing piece is installed on the outside of the filter screen arranged coplanar with the discharge port, and a suction fan is installed on the outside of the closing piece. After the rubber and plastic strips are cut into rubber and plastic particles by the cutting knife roller, they are discharged in a vertical falling manner. During the feeding process, the suction fan starts to suck air, and the outside air enters through the filter screen arranged coplanar with the feed port, and then is discharged through the filter screen arranged coplanar with the discharge port. During this period, the dust in the fallen rubber and plastic particles will be carried by the wind to the filter screen arranged coplanar with the discharge port for discharge. Since the distance between the falling point of the rubber and plastic particles and the closing piece is large, and the mesh surface of the filter screen is wide, it can well solve the problem of pixel particle clogging and adsorption blocking the filter component existing in the existing dust removal component, and the cleaning effect is better in comparison.

[0010] Preferably, in order to limit the discharge point of the rubber and plastic particles and prevent them from being directly affected by wind and directly contacting the filter screen arranged coplanar with the discharge port, the cleaning mechanism also includes two discharge plates arranged opposite to each other in the inner cavity of the chassis and below the cutting knife roller, and a discharge port is provided between the two discharge plates. The discharge port is arranged in a position in the chassis away from the filter screen arranged coplanar with the discharge port, thereby freeing up more space for blowing and cleaning the dust in the rubber and plastic particles.

[0011] Preferably, in order to facilitate cleaning and replacement of the filter that has been used for a long time, a filter frame is installed on the outside of the filter. The filter frame is fixed to the outer wall of the chassis by bolts. The filter frame can be removed by simply disassembling the bolts, which is convenient and quick.

[0012] Preferably, in order to enable the suction fan to better converge the wind force and make it easier to suck out the dust, the closing part includes a closing plate installed on the outside of the chassis, the diameter of the closing plate close to the filter is larger than the diameter of the end away from the filter, and a closing plate frame is installed on the outside of the closing plate, and the closing plate frame is fixed to the outside of the chassis by bolts. The diameter of the closing plate decreases from large to small and converges at the small opening, so that the wind force is more concentrated, and the closing plate frame is installed by bolts, which is convenient and quick.

[0013] Preferably, in order to facilitate the installation of the suction fan, a ventilation pipe is installed on the outside of the closing plate, and the suction fan is fixedly installed with the ventilation pipe through a flange connection. The ventilation pipe is welded to the small opening of the closing plate to concentrate wind force in the ventilation pipe to facilitate the operation of the suction fan.

[0014] Preferably, in order to better solve the problem of piling of rubber and plastic particles during material discharge, the pelletizing device also includes a dispersing mechanism installed in the inner cavity of the chassis for dispersing the rubber and plastic pellets, the dispersing mechanism includes a rotating rod rotatably installed in the chassis and located below the discharge port, the dispersing mechanism also includes a driving motor installed on the outer wall of the chassis, one end of the rotating rod passes through the outer wall of the chassis and is fixedly connected to the output end of the driving motor, at least two striking plates are installed on the rotating rod, and separation grooves are provided on the outer side walls of the two striking plates, the rotating rod is driven to rotate by the rotation of the driving motor, and the rotating rod drives the striking plate to rotate, and when the striking plate rotates, it slaps the pile of rubber and plastic particles falling from the discharge port, and the separation groove assists in dispersing, so that the rubber and plastic particles are dispersed, which makes it more convenient for the vacuum fan to absorb dust.

[0015] Preferably, in order to facilitate the maintenance of the strike plates, both ends of the two strike plates are fixedly installed with rings, and the outside of the rings is plugged with safety pins for fixing to the rotating rod. The strike plate and the rotating rod are designed to be split, and the strike plate can be easily disassembled and assembled by disassembling the safety pins on the rings, which is convenient and quick.

[0016] (III) Beneficial effects

[0017] The pelletizing device is provided with a dust cleaning mechanism, and the suction fan starts suction, and the outside wind enters through the filter screen arranged on the same plane as the feed port, and is then discharged through the filter screen arranged on the same plane as the discharge port. During this period, the dust in the falling rubber and plastic particles will be carried by the wind to the filter screen arranged on the same plane as the discharge port for discharge. Since the distance between the falling point of the rubber and plastic particles and the closing piece is large, and the filter screen has a wide mesh surface, it can well solve the problem of pixel particle clogging and adsorption blocking the filter component existing in the existing dust removal component, and the dust cleaning effect is better in comparison.

[0018] The pelletizing device drives the rotating rod to rotate by the rotation of the driving motor, and the rotating rod drives the striking plate to rotate. When the striking plate rotates, it hits the pile of rubber and plastic particles falling from the feeding port, and the separation groove assists in breaking them up, so that the rubber and plastic particles are dispersed, which makes it more convenient for the suction fan to absorb dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front appearance structure of a pelletizing device for rubber pelletizing;

[0020] Figure 2 This is a schematic diagram of the back appearance structure of a pelletizing device for rubber pelletizing;

[0021] Figure 3 It is a schematic diagram of the top appearance structure of a pelletizing device for rubber pelletizing;

[0022] Figure 4 This is a schematic diagram of the internal structure of a pelletizing device for rubber pelletizing;

[0023] Figure 5 for Figure 4 Enlarged schematic diagram at point A in the middle.

[0024] In the figure:

[0025] 1. Chassis; 2. Feed inlet; 3. Feed roller; 4. Pressing roller; 5. Cutting roller; 6. Discharge port; 7. Cleaning mechanism; 71. Feeding plate; 72. Feeding port; 73. Filter; 731. Filter frame; 74. Closing piece; 741. Closing plate; 742. Closing plate frame; 75. Ventilation duct; 76. Suction fan; 8. Breaking mechanism; 81. Rotating rod; 82. Driving motor; 83. Striking plate; 84. Separation groove; 85. Ring; 86. Safety pin. DETAILED DESCRIPTION

[0026] 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.

[0027] Embodiment 1

[0028] This embodiment provides a pelletizing device for rubber pelletizing, such as Figure 1-5 As shown: the pelletizing device comprises a chassis 1 and a feed port 2 fixedly mounted on the top of the outer side wall of the chassis 1, a feed roller 3 for pushing plastic strips is rotatably mounted near the lower part of the feed port 2 in the inner cavity of the chassis 1, a pressing roller 4 cooperating with the feed roller 3 is rotatably mounted in the inner cavity of the chassis 1, a cutting knife roller 5 for pelletizing the plastic strips is rotatably mounted behind the feed roller 3 and the pressing roller 4 in the inner cavity of the chassis 1, the pelletizing device further comprises a discharge port 6 mounted on the bottom of the outer side wall of the chassis 1 and arranged on the opposite side to the feed port 2, and a dust cleaning mechanism 7 is arranged in the inner cavity of the chassis 1 below the feed roller 3 and the cutting knife roller 5;

[0029] The cleaning mechanism 7 includes filter screens 73 installed on two opposite surfaces of the outer wall of the chassis 1, one of the filter screens 73 is arranged coplanar with the feed port 2, and the other filter screen 73 is arranged coplanar with the discharge port 6. The outside of the filter screen 73 arranged coplanar with the discharge port 6 is installed with a closing piece 74, and the outside of the closing piece 74 is installed with a suction fan 76.

[0030] When in use, the rubber and plastic strips enter the chassis 1 through the feed port 2 and are sent to the feed roller 3, and then the pressure roller 4 is pressed down to start the cutting knife roller 5. The cutting knife roller 5 drives the gear of the feed roller 3 to move through the gear meshing transmission, so that the rubber and plastic strips are continuously sent to the cutting edge of the cutting knife roller 5 for pelletizing. After the rubber and plastic strips are cut into rubber and plastic particles by the cutting knife roller 5, they are discharged by vertical falling. During the discharging process, the suction fan 76 starts to suck air, and the outside air enters through the filter screen 73 arranged coplanar with the feed port 2, and then is discharged through the filter screen 73 arranged coplanar with the discharge port 6. During this period, the dust in the falling rubber and plastic particles will be carried by the wind to the filter screen 73 arranged coplanar with the discharge port 6 for discharge. Since the distance between the falling point of the rubber and plastic particles and the closing member 74 is large, and the mesh surface of the filter screen 73 is wide, it can well solve the problems of pixel particle blockage and adsorption blocking of the filter component existing in the existing dust removal component, and the cleaning effect is better in comparison.

[0031] Among them, a filter frame 731 is installed on the outside of the filter 73, and the filter frame 731 is fixed to the outer wall of the chassis 1 by bolts. When replacing, the bolts are removed to remove the filter frame 731. When installing, the filter frame 731 is installed on the outer wall of the chassis 1 by bolts, which is convenient and quick.

[0032] Furthermore, the dust cleaning mechanism 7 also includes two discharge plates 71 opposite to each other in the inner cavity of the chassis 1 and located below the cutting blade roller 5, and a discharge port 72 is provided between the two discharge plates 71. When in use, the rubber and plastic particles first fall on the two discharge plates 71, and then are discharged through the discharge port 72. It should be noted that there is an angle of 15° to 30° between the contact surfaces of the two discharge plates 71 and the chassis 1, which facilitates the rubber and plastic particles to roll along the sloped surfaces of the two discharge plates 71 to the discharge port 72.

[0033] Furthermore, the closing member 74 includes a closing plate 741 installed on the outside of the chassis 1, the diameter of the closing plate 741 near the filter 73 is larger than the diameter of the end away from the filter 73, and a closing plate frame 742 is installed on the outside of the closing plate 741. The closing plate frame 742 is fixedly installed with the outside of the chassis 1 by bolts, and the diameter of the closing plate 741 is arranged from large to small. When in use, the wind sucked out by the suction fan 76 first passes through the adjacent filter 73 and enters the large opening of the closing plate 741, and then converges at the small opening due to the change of the pipe diameter to concentrate the wind force.

[0034] Among them, the ventilating pipe 75 is installed outside the closing plate 741, and the suction fan 76 is fixedly installed with the ventilating pipe 75 through a flange connection. When in use, the suction fan 76 is docked and installed with the flange of the ventilating pipe 75 through its flange.

[0035] Example 2

[0036] Different from Example 1, Figure 1 , Figure 4 and Figure 5 As shown, the pelletizing device also includes a dispersing mechanism 8 installed in the inner cavity of the chassis 1 for dispersing the rubber and plastic pellets. The dispersing mechanism 8 includes a rotating rod 81 rotatably installed in the chassis 1 and located below the discharge port 72. The dispersing mechanism 8 also includes a driving motor 82 installed on the outer wall of the chassis 1. One end of the rotating rod 81 passes through the outer wall of the chassis 1 and is fixedly connected to the output end of the driving motor 82. At least two striking plates 83 are installed on the rotating rod 81, and separation grooves 84 are opened on the outer walls of the two striking plates 83.

[0037] When in use, the driving motor 82 is started, and the rotation of the driving motor 82 drives the rotating rod 81 to rotate, and the rotating rod 81 drives the striking plate 83 to rotate. When the striking plate 83 rotates, it hits the pile of rubber and plastic particles falling from the discharge port 72, and the separation groove 84 assists in breaking up the rubber and plastic particles, so that the rubber and plastic particles are dispersed, which makes it more convenient for the suction fan 76 to absorb dust.

[0038] Furthermore, both ends of the two striking plates 83 are fixedly mounted with collars 85, and the outer portion of the collars 85 is plugged with safety pins 86 for fixing with the rotating rod 81. When in use, the collars 85 are sleeved on the rotating rod 81, aligned with the insertion hole, and then the safety pins 86 are inserted into the insertion hole, so that the collars 85 and the rotating rod 81 can be fixed.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pelletizing device for rubber pelletizing, comprising a case (1) and a feed port (2) fixedly mounted on the top of the outer wall of the case (1), a feed roller (3) for pushing plastic strips is rotatably mounted in the inner cavity of the case (1) near the lower part of the feed port (2), a pressing roller (4) cooperating with the feed roller (3) is rotatably mounted in the inner cavity of the case (1), a cutting knife roller (5) for pelletizing the plastic strips is rotatably mounted in the inner cavity of the case (1) behind the feed roller (3) and the pressing roller (4), the pelletizing device further comprising a discharge port (6) mounted on the bottom of the outer wall of the case (1) and arranged on the opposite side of the feed port (2), characterized in that: The inner cavity of the chassis (1) is provided with a dust cleaning mechanism (7) below the feeding roller (3) and the cutting knife roller (5); The dust cleaning mechanism (7) comprises filter screens (73) mounted on two opposite surfaces of the outer wall of the chassis (1), wherein one of the filter screens (73) is arranged coplanarly with the feed port (2), and the other filter screen (73) is arranged coplanarly with the discharge port (6), and a closing member (74) is installed on the outside of the filter screen (73) arranged coplanarly with the discharge port (6), and a suction fan (76) is installed on the outside of the closing member (74).

2. A pelletizing device for rubber pelletizing according to claim 1, characterized in that: The dust cleaning mechanism (7) further comprises two unloading plates (71) which are oppositely disposed in the inner cavity of the chassis (1) and are located below the cutting blade roller (5), and a unloading port (72) is provided between the two unloading plates (71).

3. A pelletizing device for rubber pelletizing according to claim 1, characterized in that: A filter frame (731) is installed outside the filter (73), and the filter frame (731) is fixed to the outer wall of the chassis (1) by bolts.

4. A pelletizing device for rubber pelletizing according to claim 1, characterized in that: The closing member (74) comprises a closing plate (741) mounted on the outside of the chassis (1); the diameter of the closing plate (741) at one end close to the filter screen (73) is larger than the diameter of the end away from the filter screen (73); a closing plate frame (742) is mounted on the outside of the closing plate (741); and the closing plate frame (742) is fixed to the outside of the chassis (1) by bolts.

5. A pelletizing device for rubber pelletizing according to claim 4, characterized in that: A ventilation pipe (75) is installed outside the closing plate (741), and the suction fan (76) is fixedly installed with the ventilation pipe (75) through a flange connection.

6. A pelletizing device for rubber pelletizing according to claim 2, characterized in that: The pelletizing device further comprises a dispersing mechanism (8) installed in the inner cavity of the chassis (1) for dispersing the rubber and plastic pellets, the dispersing mechanism (8) comprising a rotating rod (81) rotatably installed in the chassis (1) and located below the feed opening (72), the dispersing mechanism (8) further comprising a driving motor (82) installed on the outer wall of the chassis (1), one end of the rotating rod (81) passing through the outer wall of the chassis (1) and fixedly connected to the output end of the driving motor (82), at least two striking plates (83) being installed on the rotating rod (81), and separation grooves (84) being provided on the outer side walls of the two striking plates (83).

7. A pelletizing device for rubber pelletizing according to claim 6, characterized in that: Both ends of the two striking plates (83) are fixedly mounted with collars (85), and the outside of the collars (85) is plugged with safety pins (86) for fixing with the rotating rod (81).

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