Underwater pelletizing device for thermoplastic rubber production

Abstract

The utility model discloses an underwater pelletizing device for thermoplastic rubber production, and belongs to the technical field of thermoplastic rubber production, and the technical scheme is characterized in that the underwater pelletizing device comprises a plastic extruder, an extrusion template is arranged at one end of the plastic extruder, and a pelletizing water chamber is arranged at the end, away from the plastic extruder, of the extrusion template; a rotating motor is arranged on the outer wall, away from the extrusion template, of the pelletizing water chamber, an output shaft of the rotating motor is connected with a blade, a water inlet pipe is arranged at the top of the pelletizing water chamber, a water outlet pipe is arranged at the bottom of the pelletizing water chamber, and a first flow guide plate is arranged on the inner wall of one side of the pelletizing water chamber; a first guide plate is arranged on the inner wall of one side of the pelletizing water chamber, a second guide plate is arranged on the inner wall of the other side of the pelletizing water chamber, a flowing channel is formed between the first guide plate and the second guide plate, the width of the flowing channel can be adjusted according to the length of particles, the water speed in the flowing channel can be increased to the maximum, and the cut particles can be conveniently discharged from a water outlet pipe; and the underwater pelletizing efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of thermoplastic rubber production technology, and more specifically to an underwater pelletizing apparatus for thermoplastic rubber production. Background Technology

[0002] Thermoplastic elastomers, also known as synthetic rubber or artificial rubber, possess the excellent properties of traditional cross-linked vulcanized rubber, such as high elasticity, aging resistance, and oil resistance, while also having the advantages of ordinary plastics, such as ease of processing and wide range of processing methods. In the production process of thermoplastic elastomers, underwater pelletizing equipment is often required for pelletizing.

[0003] Currently, Chinese patent CN206216955U discloses an underwater pelletizing device for the production of high-viscosity thermoplastic rubber, including a pelletizing water chamber. The bottom and top of the pelletizing water chamber are connected to water outlet pipes, and one side of the pelletizing water chamber is connected to the extrusion template of an extruder. A cutting device driven by a rotary power device is rotatably inserted into the pelletizing water chamber. The cutting device includes a blade holder and a blade shaft. The blade holder is axially slidably mounted on the blade shaft and is connected to the blade shaft through a transmission structure. Several blades are detachably fixed on the edge of the blade holder.

[0004] In existing underwater pelletizing devices similar to the one described above, molten rubber is extruded through an extrusion template and enters a pelletizing water chamber. After pelletizing, the water flows out of the pelletizing water chamber. Because the internal space of the pelletizing water chamber is large, the water flow rate is slow, which affects the pelletizing efficiency. Therefore, there is room for improvement. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an underwater pelletizing device for thermoplastic rubber production. Its advantage is that the width of the flow channel can be adjusted according to the length of the particles, and the water velocity in the flow channel can be increased to the maximum, which facilitates the discharge of the cut particles from the water outlet pipe and improves the efficiency of underwater pelletizing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an underwater pelletizing device for thermoplastic rubber production, comprising a plastic extruder, an extrusion template at one end of the plastic extruder, a pelletizing water chamber at the end of the extrusion template away from the plastic extruder, a rotary motor at the outer wall of the pelletizing water chamber away from the extrusion template, a blade connected to the output shaft of the rotary motor, a water inlet pipe at the top of the pelletizing water chamber, a water outlet pipe at the bottom of the pelletizing water chamber, a first guide plate at one inner wall of the pelletizing water chamber, a second guide plate at the other inner wall of the pelletizing water chamber, and a flow channel between the first guide plate and the second guide plate;

[0007] A sliding rod is provided on the outer wall of the first guide plate near the second guide plate. An adjusting plate is slidably connected to the outer wall of the sliding rod. A threaded rod is rotatably connected to the top of the adjusting plate near the outer wall of the first guide plate. The threaded rod extends to the outside of the pelletizing water chamber.

[0008] By adopting the above technical solution, during use, water flows into the pelletizing water chamber from the inlet pipe and flows out of the pelletizing water chamber from the outlet pipe. Molten plastic is extruded through the extrusion mold and enters the pelletizing water chamber. After pelletizing, it flows out of the pelletizing water chamber along with the flowing water. Since the flow channel between the first guide plate and the second guide plate is narrow, the water flow rate is relatively fast. At the same time, the threaded rod can be extended and retracted by hand. When the threaded rod extends and retracts, the position of the adjusting plate in the flow channel can be adjusted. Therefore, the width of the flow channel can be adjusted according to the length of the particles, which can increase the water speed in the flow channel to the maximum, making it convenient for the cut particles to be discharged from the outlet pipe, thus improving the efficiency of underwater pelletizing.

[0009] In a preferred embodiment: the cross-sections of the first guide plate and the second guide plate are both isosceles trapezoidal structures.

[0010] By adopting the above technical solution, the design of the cross-section with an isosceles trapezoidal structure facilitates the water flow to enter the flow channel along the inclined surfaces of the first and second guide plates, thereby improving the flow rate of the water.

[0011] In a preferred embodiment: a rotary knob is provided at the end of the threaded rod away from the adjusting plate, and the cross-section of the rotary knob is larger than the cross-section of the threaded rod.

[0012] By adopting the above technical solution, the rotation knob setting can increase the contact area between the finger and the threaded rod, thus improving the convenience of rotating the threaded rod.

[0013] In a preferred embodiment, the top of the adjustment plate has an arc-shaped structure.

[0014] By adopting the above technical solution, the design of the top arc-shaped structure can facilitate the flow of water along the top of the regulating plate, avoiding obstruction of the water flow.

[0015] In a preferred embodiment, the sliding rod has a T-shaped structure.

[0016] By adopting the above technical solution, the T-shaped structure design can easily limit the adjustment plate and prevent the adjustment plate from detaching from the surface of the sliding rod during adjustment.

[0017] In a preferred embodiment: a guide block is provided at the bottom of the outer wall of the first guide plate and the second guide plate on opposite sides, and the two guide blocks have an arc-shaped structure on opposite sides.

[0018] By adopting the above technical solution, the guide block can be conveniently guided into the outlet pipe after pelletizing, thus improving the smoothness of water flow.

[0019] In a preferred embodiment: a motor is provided outside the pelletizing water chamber, and the output shaft of the motor is connected to a booster impeller, which is located at the top of the internal space of the pelletizing water chamber.

[0020] By adopting the above technical solution, the motor can be controlled to rotate the booster impeller. The rotation of the booster impeller can pressurize the water flow in the pelletizing water chamber, further improving the flow efficiency of the water.

[0021] Compared with the prior art, this application has the following beneficial effects:

[0022] 1. During use, water flows into the pelletizing water chamber through the inlet pipe and out of the pelletizing water chamber through the outlet pipe. Molten plastic is extruded through the extrusion mold and enters the pelletizing water chamber. After pelletizing, it flows out of the pelletizing water chamber along with the flowing water. Because the flow channel between the first guide plate and the second guide plate is narrow, the water flow rate is relatively fast. At the same time, turning the threaded rod by hand can drive the threaded rod to extend and retract. When the threaded rod extends and retracts, it can adjust the position of the regulating plate in the flow channel. Therefore, the width of the flow channel can be adjusted according to the length of the particles, which can increase the water speed in the flow channel to the maximum, making it convenient for the cut particles to be discharged from the outlet pipe, thus improving the efficiency of underwater pelletizing.

[0023] 2. The first and second guide plates, with their isosceles trapezoidal cross-sections, facilitate water flow along their inclined surfaces into the flow channel, increasing the water flow rate. The guide blocks also facilitate the introduction of granulated particles into the outlet pipe, improving the smoothness of water flow.

[0024] 3. The control motor can rotate the booster impeller, which pressurizes the water flow in the pelletizing chamber, further improving the flow efficiency of the water. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of this embodiment;

[0026] Figure 2 This is a cross-sectional view of the pelletizing water chamber in this embodiment;

[0027] Figure 3 This is a three-dimensional structural diagram highlighting the adjustment plate in this embodiment.

[0028] Explanation of reference numerals in the attached drawings: 1. Plastic extruder; 2. Extrusion die; 3. Pelletizing water chamber; 4. Rotary motor; 5. Blade; 6. Inlet pipe; 7. Outlet pipe; 8. First guide plate; 9. Second guide plate; 10. Sliding rod; 11. Adjusting plate; 12. Threaded rod; 13. Rotating knob; 14. Guide block; 15. Pressure booster impeller. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0030] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the disclosed product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0031] An underwater pelletizing device for thermoplastic rubber production, such as Figure 1-3 As shown, the device includes a plastic extruder 1, an extrusion template 2 at one end of the plastic extruder 1, a pelletizing water chamber 3 at the end of the extrusion template 2 away from the plastic extruder 1, a rotary motor 4 on the outer wall of the pelletizing water chamber 3 away from the extrusion template 2, a blade 5 connected to the output shaft of the rotary motor 4, a water inlet pipe 6 at the top of the pelletizing water chamber 3, a water outlet pipe 7 at the bottom of the pelletizing water chamber 3, a first guide plate 8 on one side of the inner wall of the pelletizing water chamber 3, a second guide plate 9 on the other side of the inner wall of the pelletizing water chamber 3, and a flow channel between the first guide plate 8 and the second guide plate 9.

[0032] A sliding rod 10 is provided on the outer wall of the first guide plate 8 near the second guide plate 9. An adjusting plate 11 is slidably connected to the outer wall of the sliding rod 10. A threaded rod 12 is rotatably connected to the top of the adjusting plate 11 near the outer wall of the first guide plate 8. The threaded rod 12 extends to the outside of the pelletizing water chamber 3.

[0033] In this embodiment, the cross-sections of the first guide plate 8 and the second guide plate 9 are both isosceles trapezoidal. Through the first guide plate 8 and the second guide plate 9 with their isosceles trapezoidal cross-sections, water can easily enter the flow channel along the inclined surfaces of the first guide plate 8 and the second guide plate 9, thereby increasing the flow rate of the water.

[0034] A rotary knob 13 is provided at the end of the threaded rod 12 away from the adjusting plate 11. The cross-section of the rotary knob 13 is larger than that of the threaded rod 12. Rotating the knob 13 increases the contact area between the finger and the threaded rod 12, improving the ease of rotation of the threaded rod 12. The top of the adjusting plate 11 has an arc-shaped structure, which facilitates the flow of water along the top of the adjusting plate 11 and avoids obstruction of the water flow. The sliding rod 10 has a T-shaped structure, which facilitates the limiting of the adjusting plate 11 and prevents the adjusting plate 11 from detaching from the surface of the sliding rod 10 during adjustment.

[0035] Furthermore, guide blocks 14 are provided at the bottom of the outer wall of the first guide plate 8 and the second guide plate 9 on opposite sides. The two guide blocks 14 have an arc-shaped structure on opposite sides. The guide blocks 14 can easily guide the pelletized particles to the water outlet pipe 7, improving the smoothness of water flow.

[0036] It is worth mentioning that a motor is installed outside the pelletizing water chamber 3. The output shaft of the motor is connected to a booster impeller 15. The booster impeller 15 is located at the top of the internal space of the pelletizing water chamber 3. Controlling the motor to operate can rotate the booster impeller 15. The rotation of the booster impeller 15 can pressurize the water flow in the pelletizing water chamber 3, further improving the flow efficiency of the water flow.

[0037] The working process and beneficial effects of this utility model are as follows:

[0038] In use, water flows into the pelletizing water chamber 3 through the inlet pipe 6 and out of the pelletizing water chamber 3 through the outlet pipe 7. Molten plastic is extruded through the extrusion template 2 and enters the pelletizing water chamber 3. After pelletizing, the water flows out of the pelletizing water chamber 3. Because the flow channel between the first guide plate 8 and the second guide plate 9 is narrow, the water flow rate is fast. At the same time, turning the threaded rod 12 by hand can drive the threaded rod 12 to extend and retract. When the threaded rod 12 extends and retracts, it can adjust the position of the adjusting plate 11 in the flow channel. Therefore, the width of the flow channel can be adjusted according to the length of the particles, which can increase the water speed in the flow channel to the maximum, making it convenient for the cut particles to be discharged from the outlet pipe 7, thus improving the efficiency of underwater pelletizing.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An underwater pelletizing device for thermoplastic rubber production, comprising a plastic extruder (1), wherein an extrusion template (2) is provided at one end of the plastic extruder (1), a pelletizing water chamber (3) is provided at the end of the extrusion template (2) away from the plastic extruder (1), a rotary motor (4) is provided on the outer wall of the pelletizing water chamber (3) away from the extrusion template (2), a blade (5) is connected to the output shaft of the rotary motor (4), a water inlet pipe (6) is provided at the top of the pelletizing water chamber (3), and a water outlet pipe (7) is provided at the bottom of the pelletizing water chamber (3), characterized in that: A first guide plate (8) is provided on one side of the inner wall of the pelletizing water chamber (3), and a second guide plate (9) is provided on the other side of the inner wall of the pelletizing water chamber (3). A flow channel is provided between the first guide plate (8) and the second guide plate (9). A sliding rod (10) is provided on the outer wall of the first guide plate (8) near the second guide plate (9). An adjusting plate (11) is slidably connected to the outer wall of the sliding rod (10). A threaded rod (12) is rotatably connected to the top of the adjusting plate (11) near the outer wall of the first guide plate (8). The threaded rod (12) extends to the outside of the pelletizing water chamber (3).

2. The underwater pelletizing device for thermoplastic rubber production according to claim 1, characterized in that: The cross-sections of the first guide plate (8) and the second guide plate (9) are both isosceles trapezoidal structures.

3. The underwater pelletizing device for thermoplastic rubber production according to claim 1, characterized in that: A rotating knob (13) is provided at the end of the threaded rod (12) away from the adjusting plate (11), and the cross-section of the rotating knob (13) is larger than the cross-section of the threaded rod (12).

4. The underwater pelletizing device for thermoplastic rubber production according to claim 3, characterized in that: The top of the adjustment plate (11) has an arc-shaped structure.

5. The underwater pelletizing device for thermoplastic rubber production according to claim 4, characterized in that: The sliding rod (10) has a T-shaped structure.

6. The underwater pelletizing device for thermoplastic rubber production according to claim 1, characterized in that: The bottom of the outer wall of the first guide plate (8) and the second guide plate (9) on opposite sides are provided with guide blocks (14), and the two guide blocks (14) on opposite sides have an arc surface structure.

7. An underwater pelletizing device for thermoplastic rubber production according to any one of claims 1-6, characterized in that: A motor is installed outside the pelletizing water chamber (3), and the output shaft of the motor is connected to a booster impeller (15). The booster impeller (15) is located at the top of the internal space of the pelletizing water chamber (3).

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