Multifunctional plastic pelletizing device

Abstract

The multifunctional plastic pelletizing device comprises a power assembly and a feeding die head, the power assembly and the feeding die head are connected through a cutting chamber, an upper channel and a lower channel are formed in the upper side and the lower side of the cutting chamber, and a cooling medium penetrates through the cutting chamber from the upper channel to flow towards the lower channel; the upper channel is connected with a first channel and a second channel in a penetrating manner; the first channel and the second channel are communicated and connected with the same or different cooling medium sources, the first channel and the second channel are respectively provided with a pipeline valve, and the first channel and the second channel are arranged on the cutting chamber, so that the requirements on the cooling medium in the pelletizing process of different materials may be different; and the two liquid inlet pipelines are arranged, so that the supply mode and the supply amount of the cooling medium can be flexibly adjusted according to different material characteristics and production requirements, and the adaptability to different materials is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pelletizers, in particular to a multifunctional plastic pelletizer. Background Art

[0002] The underwater pelletizing and granulating unit generally includes a single-stage or two-stage exhaust extruder, an underwater pelletizer, a flexible knife seat, an automatic dehydration (drying) device, a vibrating separation screen, an air conveying system, a collection hopper, and a control system. When the uniform high-temperature molten material enters the die flow channel from the end of the upstream equipment (reactor / screw extruder / melt pump, etc.), the material is cut into drops by the high-speed rotating pelletizer blade as soon as it leaves the die hole of the mold and enters the processing water. Due to the physical properties of the maximized specific surface area of ​​the particles and the temperature difference between the molten drop polymer and the processing water, the drops solidify and form particles that are close to spheres. This "critical state between hot cutting and cold cutting" granulation method determines that it can be well qualified for the granulation of materials with poor molten strength, high viscosity, and high heat sensitivity.

[0003] During the plastic pelletizing process, the pelletizer blade works with the die head. The pelletizer blade rotates at high speed driven by the motor. The high-temperature molten material is extruded from the die head and cut into plastic pellets by the pelletizer blade.

[0004] However, the existing pelletizers all adopt a single channel and cannot flexibly adjust the supply mode and supply amount of the cooling medium, thus resulting in the inability to adapt to the pelletizing of materials with different material properties. Summary of the invention

[0005] The purpose of the present invention is to provide a multifunctional plastic pelletizing device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a multifunctional plastic pelletizing device, including a power component and a feeding die head, the power component and the feeding die head are connected through a cutting chamber, and an upper channel and a lower channel are arranged on the upper and lower sides of the cutting chamber, and a cooling medium flows from the upper channel through the cutting chamber to the lower channel, and a first channel and a second channel are connected through the upper channel; the first channel and the second channel are connected through the same or different cooling medium sources, and pipeline valves are installed on the first channel and the second channel.

[0007] Compared with the prior art, by arranging the first channel and the second channel on the cutting chamber, the demand for cooling medium during the pelletizing process may be different for different materials; some materials may require more cooling water to cool down quickly, while other materials may have a higher demand for lubricating fluid; setting up two liquid inlet pipes can flexibly adjust the supply method and supply amount of the cooling medium according to different material characteristics and production requirements, thereby improving the adaptability to different materials.

[0008] The preferred technical solution of the present application is that a pelletizing cutter assembly is provided in the cutting chamber, and the cutter assembly is fixedly mounted on the power assembly. When working, the power assembly drives the cutter assembly to rotate in the cutting chamber to cut the material fed into the feeding die head.

[0009] According to the preferred technical solution of the present application, a liquid outlet channel is connected through the lower channel, and the second channel and the liquid outlet channel are connected through a third channel.

[0010] According to the preferred technical solution of the present application, pipeline valves are installed on both the first channel and the second channel.

[0011] According to the preferred technical solution of the present application, a regulating pipeline is connected in parallel to one side of the pipeline valve of the second channel, and both ends of the regulating pipeline are respectively connected to the two sides of the pipeline valve.

[0012] According to the preferred technical solution of the present application, the second channel and the third channel are connected at the connection point by a reducing connecting pipe.

[0013] According to the preferred technical solution of the present application, the third channel, the liquid outlet channel and the lower channel are connected through a three-way pipe with a reducing diameter.

[0014] In addition to the technical problems solved by the present invention, the technical features that constitute the technical solution, and the advantages brought by the technical features of the technical solution described above, other technical problems that can be solved by the present invention, other technical features included in the technical solution, and the advantages brought by these technical features will be further described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an assembly stereogram of the present invention.

[0016] Explanation of the accompanying figures: 01. Power assembly, 02. Feeding die head, 03. Cutting chamber, 04. Upper channel, 05. Lower channel, 06. First channel, 07. Second channel, 08. Liquid outlet channel, 09. Third channel, 10. Pipeline valve, 11. Adjusting pipeline, 12. Connecting pipe, 13. Three-way pipe. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] See also Figure 1As shown, the multifunctional plastic pelletizing device of the present invention comprises a power assembly 01 and a feeding die head 02, wherein the power assembly 01 and the feeding die head 02 are connected via a cutting chamber 03, wherein a pelletizing cutter assembly is arranged in the cutting chamber 03, and the cutter assembly is fixedly mounted on the power assembly 01. When working, the power assembly 01 drives the cutter assembly to rotate in the cutting chamber 03 to cut the material fed into the feeding die head 02.

[0019] The upper and lower sides of the cutting chamber 03 are provided with an upper channel 04 and a lower channel 05. The cooling medium flows from the upper channel 04 through the cutting chamber 03 to the lower channel 05. Compared with the flow direction of the traditional cold cutting medium entering the cutting chamber 03 from the bottom and flowing out from the top, the water flow from top to bottom is consistent with the gravity direction of the particles, so that the direction of the cooling medium is basically consistent with the movement direction of the particles, which can provide a forward driving force for the particles and help the particles to be discharged smoothly from the cutting chamber 03. This prevents the particles from accumulating in the cutting chamber 03 due to other reasons such as the flow rate of the cooling medium, which affects the continuity of production.

[0020] The upper channel 04 is connected with the first channel 06 and the second channel 07. The lower channel 05 is connected with the liquid outlet channel 08. The second channel 07 and the liquid outlet channel 08 are connected through the third channel 09. The first channel 06 and the second channel 07 are connected with the same or different cooling medium sources. The first channel 06 and the second channel 07 are both installed with pipeline valves 10. The pipeline valve 10 can be an electric pipeline valve 10 or a pneumatic pipeline valve 10. By arranging the first channel 06 and the second channel 07 on the cutting chamber 03, it is equivalent to arranging two liquid inlet pipelines that are mutually spare in the cutting chamber 03. During the production process, if one liquid inlet pipeline is blocked, leaked, fails, or needs maintenance and repair, the other liquid inlet pipeline can continue to work to ensure that the cooling medium supply for cooling and lubrication of the pelletizing is not interrupted, thereby maintaining the continuity of production and avoiding production stagnation and product quality problems caused by liquid inlet interruption.

[0021] At the same time, different functions can be realized or different process requirements can be met by setting the first channel 06 and the second channel 07:

[0022] Supply of different cooling media: One liquid inlet pipe can be used to supply cooling water to cool the material and the cutter during the pelletizing process, reduce the temperature, and prevent the material from overheating and sticking and the cutter from overheating and wearing; in this way, the supply of various cooling media can be accurately controlled according to different process requirements, thereby improving the performance and service life of the pelletizer.

[0023] Different liquid inlet speeds and pressures: According to the needs of the production process, the two liquid inlet pipes can be set with different liquid inlet speeds and pressures. For example, in the initial stage of pelletizing, a higher liquid inlet speed and pressure may be required to quickly cool and fix the material, while in the subsequent stages, a lower liquid inlet speed and pressure may be required to avoid impact and damage to the formed pellets. Through the independent control of the two liquid inlet pipes, the liquid inlet parameters can be flexibly adjusted to meet the process requirements of different stages.

[0024] At the same time, it improves the adaptability and flexibility of the system: Adapt to different materials and production conditions: For different materials, the demand for cooling medium during the pelletizing process may be different. Some materials may require more cooling water to cool down quickly, while other materials may have a higher demand for lubricating fluid. Setting up two liquid inlet pipes can flexibly adjust the supply method and supply amount of cooling medium according to different material characteristics and production requirements, and improve the adaptability of the pelletizer to different materials.

[0025] A regulating pipeline 11 is connected in parallel to one side of the pipeline valve 10 of the second channel 07, and the two ends of the regulating pipeline 11 are respectively connected to the two sides of the pipeline valve 10. By setting the regulating pipeline 11 in a long-distance, large-flow cooling medium transportation system, a single pipeline valve 10 may still cause a certain pressure loss in a fully open state. A parallel pipeline can share part of the cooling medium flow, thereby reducing the pressure loss of the entire system when passing through the pipeline valve 10 and improving the cooling medium transportation efficiency.

[0026] The connection between the second channel 07 and the third channel 09 is connected by a reducing connecting pipe 12. When the cooling medium flows from the second channel 07 to the third channel 09, the flow rate will be accelerated. The third channel 09, the liquid outlet channel 08 and the lower channel 05 are connected by a reducing three-way pipe 13. When the cooling medium flows from the third channel 09 to the liquid outlet channel 08, the flow rate will be slowed down. The flow rate of the cooling medium can be accelerated or slowed down to meet specific process requirements or equipment operating conditions.

[0027] If the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A multifunctional plastic pelletizing device, comprising a power assembly and a feeding die head, wherein the power assembly and the feeding die head are connected via a cutting chamber, characterized in that: An upper channel and a lower channel are arranged on the upper and lower sides of the cutting chamber. The cooling medium flows from the upper channel through the cutting chamber to the lower channel. The upper channel is connected with a first channel and a second channel. The first channel and the second channel are connected with the same or different cooling medium sources.

2. The multifunctional plastic pelletizing device according to claim 1, characterized in that: A pelletizing cutter assembly is provided in the cutting chamber, and the cutter assembly is fixedly mounted on the power assembly. When working, the power assembly drives the cutter assembly to rotate in the cutting chamber to cut the material fed into the feeding die head.

3. The multifunctional plastic pelletizing device according to claim 2, characterized in that: The lower channel is connected with a liquid outlet channel, and the second channel and the liquid outlet channel are connected with each other through a third channel.

4. The multifunctional plastic pelletizing device according to claim 3 is characterized in that: Pipeline valves are installed on both the first channel and the second channel.

5. The multifunctional plastic pelletizing device according to claim 4, characterized in that: A regulating pipeline is connected in parallel to one side of the pipeline valve of the second channel, and two ends of the regulating pipeline are respectively connected to the two sides of the pipeline valve.

6. The multifunctional plastic pelletizing device according to any one of claims 1 to 5, characterized in that: The connection between the second channel and the third channel adopts a pipe-through connection.

7. The multifunctional plastic pelletizing device according to any one of claims 1 to 5, characterized in that: The third channel, the liquid outlet channel and the lower channel are connected through a three-way pipe.

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