Thermoplastic rubber granulator

Abstract

The utility model discloses a thermoplastic rubber granulator, which relates to the technical field of rubber production equipment and comprises a shell, a pair of feeding pipes are oppositely arranged on the side wall of the shell, a pair of material blocking grooves with lower openings are arranged on the pair of feeding pipes, a plurality of feeding ports are arranged on the bottom walls of the material blocking grooves close to the feeding pipes, and the feeding ports are communicated with the feeding pipes. A pair of rotating shafts are rotationally arranged on the pair of material blocking grooves, and pelletizing blades are arranged at the positions, close to the feeding opening, of the rotating shafts; according to the utility model, the motor drives the pair of pelletizing blades to rotate, and the pair of pelletizing blades simultaneously pelletize rubber raw materials extruded from the feeding pipe, so that the pelletizing efficiency is improved, rubber particles are dried while being subjected to multi-stage screening in the process of rolling down on the spiral guide plate, the rubber particles are prevented from being accumulated when rolling down, and the rubber particles are prevented from being crushed. And meanwhile, the heating area is increased during drying, and the drying effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber production equipment, in particular to a thermoplastic rubber pelletizer. Background Art

[0002] The rubber industry is one of the important basic industries of the national economy. Rubber products not only provide people with daily necessities, medical and other light industrial rubber products that are indispensable in daily life, but also provide various rubber parts to mining, transportation, construction, machinery, electronic lighting heavy industry and new industries. The rubber production process needs to go through the steps of initial training, mixing, sheeting, extrusion, pelletizing and so on.

[0003] Pelletizing is the process of cutting the extruded rubber strips into granules during the production of thermoplastic rubber. The current pelletizing device feeds from one side, and the efficiency of pelletizing is slow. In addition, during the drying process of rubber granules, the granules are easy to pile up, and the small heating area during drying leads to poor drying effect. Therefore, a thermoplastic rubber pelletizer is urgently needed to be developed. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a thermoplastic rubber pelletizer, which drives a pair of pelletizer blades to rotate through a motor. The pair of pelletizer blades pelletize the rubber raw material extruded from a feed pipe at the same time, thereby improving the pelletizing efficiency. In the process of rubber particles rolling down on a spiral guide plate, multi-stage screening is performed while drying is performed. The rubber particles are prevented from piling up when rolling down, and at the same time, the heated area is increased during drying, thereby improving the drying effect.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a thermoplastic rubber pelletizer, including a shell, a pair of feed pipes are relatively arranged on the side walls of the shell, a pair of the feed pipes are provided with a pair of blocking grooves with openings at the bottom, a plurality of feed ports are opened on the bottom wall of the blocking grooves near the feed pipes, a pair of rotating shafts are rotatably arranged on the pair of the blocking grooves, a pelletizing blade is arranged on the rotating shaft near the feed port, an end of the rotating shaft away from the feed port passes through the bottom wall of the blocking groove and a first bevel gear is arranged at the end, a motor is arranged on the top wall of the shell, an output end of the motor passes through the top wall of the shell and a second bevel gear, the second bevel gear is meshed with a pair of first bevel gears, a plurality of spiral guide plates are vertically arranged on the inner wall of the shell, each of the spiral guide plates is provided with a filter hole, and the aperture of the filter holes on the plurality of spiral guide plates decreases from top to bottom, a plurality of discharge ports are provided on the side wall of the shell and corresponding to the discharge positions of the plurality of spiral guide plates, an L-shaped air guide pipe is provided in the shell, the vertical section of the air guide pipe is provided in the middle position of the plurality of spiral guide plates, the horizontal section of the air guide pipe runs through the side wall of the shell and the inlet is connected to a hot air device, a plurality of air outlets are provided on the air guide pipe, and a discharge pipe is provided at the bottom of the shell.

[0006] Preferably, a groove is provided on the bottom wall of the material stopping groove close to the feed pipe, one end of the rotating shaft is rotatably arranged in the groove, a limiting ring is provided on each rotating shaft and located in the material stopping groove, and the limiting ring is slidably connected to the bottom wall of the material stopping groove away from the feed pipe.

[0007] Preferably, an air outlet pipe is provided on the top wall of the shell.

[0008] Preferably, a transverse plate is provided on the inner wall of the shell and between the spiral material guide plate and the material blocking groove, a through hole is provided at the center of the transverse plate, and the upper surface of the transverse plate is a conical surface.

[0009] The utility model provides a thermoplastic rubber pelletizer, which has the following beneficial effects:

[0010] 1. The utility model drives a pair of pelletizing blades to rotate through a motor, and the pair of pelletizing blades pelletize the rubber raw materials squeezed out from the feed pipe at the same time, thereby improving the efficiency of pelletizing. In the process of rubber particles rolling down on the spiral guide plate, multi-stage screening is performed while drying. Rubber particles are prevented from piling up when rolling down, and the heated area is increased during drying, thereby improving the drying effect.

[0011] 2. One end of the rotating shaft of the utility model is rotatably set in a groove opened on the material blocking groove, and the other end passes through and is rotatably set on the other bottom wall of the material blocking groove. The limiting ring arranged on the rotating shaft is slidably connected to the bottom wall of the material blocking groove away from the feed pipe, which can prevent the rotating shaft from axial displacement during rotation and ensure the meshing effect of the first bevel gear and the second bevel gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a thermoplastic rubber pelletizer of the utility model;

[0013] Figure 2 The utility model is a thermoplastic rubber pelletizer Figure 1 Enlarged view of part A.

[0014] In the figure: 1. Shell; 1-1. Discharge pipe; 1-2. Discharge port; 2. Feed pipe; 3. Stop groove; 3-1. Feed port; 4. Rotating shaft; 4-1. Limiting ring; 5. Pellet cutting blade; 6. First bevel gear; 7. Motor; 8. Second bevel gear; 9. Spiral guide plate; 9-1. Filter hole; 10. Air guide pipe; 10-1. Air outlet; 11. Air outlet pipe; 12. Horizontal plate. DETAILED DESCRIPTION

[0015] 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.

[0016] like Figure 1-2As shown, a thermoplastic rubber pelletizer comprises a shell 1, a pair of feed pipes 2 are arranged on the side walls of the shell 1, a pair of the feed pipes 2 are arranged on a pair of blocking grooves 3 with openings at the bottom, a plurality of feed ports 3-1 are opened on the bottom wall of the blocking grooves 3 near the feed pipes 2, a pair of rotating shafts 4 are rotatably arranged on the pair of the blocking grooves 3, a pelletizing blade 5 is arranged on the rotating shaft 4 near the feed port 3-1, an end of the rotating shaft 4 away from the feed port 3-1 passes through the bottom wall of the blocking groove 3 and a first bevel gear 6 is arranged on the end thereof, a motor 7 is arranged on the top wall of the shell 1, an output end of the motor 7 passes through the top wall of the shell 1 and a second bevel gear 8 is arranged on the end thereof, the second bevel gear 8 is meshedly connected with the pair of first bevel gears 6, a plurality of spiral guide plates 9 are vertically arranged on the inner wall of the shell 1, each of the spiral guide plates 9 is provided with a filter hole 9-1, and the apertures of the filter holes 9-1 on the plurality of spiral guide plates 9 decrease from top to bottom in sequence, and the shell 1 A plurality of discharge ports 1-2 are provided on the side wall of the housing 1 and correspond to the positions where the plurality of spiral guide plates 9 discharge materials. An L-shaped air guide pipe 10 is provided in the housing 1. The vertical section of the air guide pipe 10 is provided in the middle of the plurality of spiral guide plates 9. The horizontal section of the air guide pipe 10 runs through the side wall of the housing 1 and is connected to a hot air device at the inlet. A plurality of air outlet holes 10-1 are provided on the air guide pipe 10. A discharge pipe 1-1 is provided at the bottom of the housing 1. The retaining groove 3 is close to the feed pipe 2. A groove is provided on the bottom wall, one end of the rotating shaft 4 is rotatably set in the groove, a limit ring 4-1 is provided on each of the rotating shafts 4 and located in the material blocking groove 3, and the limit ring 4-1 is slidably connected to the bottom wall of the material blocking groove 3 away from the feed pipe 2; an air outlet pipe 11 is provided on the top wall of the shell 1; a horizontal plate 12 is provided on the inner wall of the shell 1 and located between the spiral guide plate 9 and the material blocking groove 3, a through hole is provided at the center position of the horizontal plate 12, and the upper surface of the horizontal plate 12 is a conical surface.

[0017] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process, which are as follows:

[0018] In the present invention, the motor 7 is connected to the external electric control system through a wire. The above equipment and connection method are prior arts and will not be described in detail here.

[0019] According to the instruction manual Figure 1-2It can be known that when the utility model is in use, firstly, the external hot air device is started, and the hot air device blows the hot air into the air guide pipe 10, and the shell 1 is heated through the multiple air outlet holes 10-1 provided on the air guide pipe 10, and then the rubber raw material is added to the pair of feed pipes 2, and the rubber raw material is squeezed into strips through the multiple feed ports 3-1 provided on the material blocking groove 3, and the motor 7 arranged on the top wall of the shell 1 is started, and the output end of the motor 7 drives the connected second bevel gear 8 to rotate, and the second bevel gear 8 drives the meshingly connected pair of first bevel gears 6 to rotate, and the pair of first bevel gears 6 drive the connected pair of rotating shafts 4 to rotate, and the pair of rotating shafts 4 drive the pelletizing blades 5 arranged thereon to rotate, and the pelletizing blades 5 cut the strip-shaped rubber raw material squeezed out from the multiple feed ports 3-1 into granules, and the granular rubber raw material falls downward from the opening below the material blocking groove 3 to the uppermost spiral guide plate 9, and the raw material rolls down from the spiral guide plate 9. When the rubber raw material particles When the particle size of the particles is smaller than the filter hole 9-1 on the spiral guide plate 9, they will fall onto the spiral guide plate 9 below, and the rubber raw materials will be screened in multiple stages, and finally discharged from the discharge port 1-2 at the outlet of the corresponding multiple spiral guide plates 9 on the side wall of the shell 1. In the process of the raw materials rolling on the spiral guide plate 9, the hot air can dry them, and then dry them thoroughly. When the particle size of the rubber raw materials is smaller than the filter hole 9-1 on the lowest spiral guide plate 9, they will be discharged outward from the discharge pipe 1-1 at the bottom of the shell 1; the utility model drives a pair of pelletizing blades 5 to rotate through a motor 7, and a pair of pelletizing blades 5 pelletize the rubber raw materials squeezed out of the feed pipe 2 at the same time, thereby improving the pelletizing efficiency. In the process of the rubber particles rolling down on the spiral guide plate 9, they are screened in multiple stages and dried at the same time, which prevents the rubber particles from accumulating when rolling, and at the same time increases the heated area during drying, thereby improving the drying effect.

[0020] There is a possible implementation in which one end of the rotating shaft 4 is rotatably set in a groove opened on the material stopping groove 3, and the other end passes through and is rotatably set on the other bottom wall of the material stopping groove 3. The limiting ring 4-1 set on the rotating shaft 4 is slidably connected to the bottom wall of the material stopping groove 3 away from the feeding pipe 2, which can prevent the rotating shaft 4 from axial displacement during rotation, thereby ensuring the meshing effect of the first bevel gear 6 and the second bevel gear 8.

[0021] In one possible implementation, an air outlet pipe 11 is provided on the top wall of the shell 1 , and wet steam during drying is discharged to the outside through the air outlet pipe 11 .

[0022] There is a possible implementation, a transverse plate 12 is provided on the inner wall of the shell 1 and between the spiral guide plate 9 and the material blocking groove 3, a through hole is opened at the center position of the transverse plate 12, and the upper surface of the transverse plate 12 is a conical surface. The transverse plate 12 guides the rubber particles to the top of the spiral guide plate 9 above, increases the rolling distance of the rubber particles, and improves the drying effect.

[0023] Although the 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 thermoplastic rubber pelletizer, comprising a housing (1), characterized in that: A pair of feed pipes (2) are arranged on the side walls of the shell (1) opposite to each other, a pair of feed pipes (2) are arranged on a pair of blocking grooves (3) with openings at the bottom, a plurality of feed ports (3-1) are opened on the bottom wall of the blocking grooves (3) near the feed pipes (2), a pair of rotating shafts (4) are rotatably arranged on the pair of blocking grooves (3), a pelletizing blade (5) is arranged on the rotating shafts (4) near the feed ports (3-1), one end of the rotating shaft (4) away from the feed ports (3-1) passes through the bottom wall of the blocking groove (3) and a first bevel gear (6) is arranged at the end thereof, a motor (7) is arranged on the top wall of the shell (1), an output end of the motor (7) passes through the top wall of the shell (1) and a second bevel gear (8) is arranged at the end thereof, the second bevel gear (8) and the pair of first bevel gears (6) are connected to each other. The shell (1) is meshedly connected, a plurality of spiral guide plates (9) are vertically arranged on the inner wall of the shell (1), each of the spiral guide plates (9) is provided with a filter hole (9-1), the apertures of the filter holes (9-1) on the plurality of spiral guide plates (9) decrease from top to bottom, a plurality of discharge ports (1-2) are provided on the side wall of the shell (1) and corresponding to the discharge positions of the plurality of spiral guide plates (9), an L-shaped air guide pipe (10) is provided in the shell (1), the vertical section of the air guide pipe (10) is provided at the middle position of the plurality of spiral guide plates (9), the horizontal section of the air guide pipe (10) passes through the side wall of the shell (1) and is connected to a hot air device at its inlet, a plurality of air outlet holes (10-1) are provided on the air guide pipe (10), and a discharge pipe (1-1) is provided at the bottom of the shell (1).

2. A thermoplastic rubber pelletizer according to claim 1, characterized in that: A groove is provided on the bottom wall of the material blocking groove (3) close to the feed pipe (2), one end of the rotating shaft (4) is rotatably arranged in the groove, and a limiting ring (4-1) is provided on each rotating shaft (4) and located in the material blocking groove (3), and the limiting ring (4-1) is slidably connected to the bottom wall of the material blocking groove (3) away from the feed pipe (2).

3. A thermoplastic rubber pelletizer according to claim 1, characterized in that: An air outlet pipe (11) is provided on the top wall of the shell (1).

4. A thermoplastic rubber pelletizer according to claim 1, characterized in that: A transverse plate (12) is provided on the inner wall of the shell (1) and between the spiral material guide plate (9) and the material blocking groove (3), a through hole is provided at the center of the transverse plate (12), and the upper surface of the transverse plate (12) is a conical surface.

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