Wood-plastic extrusion granulation device

Abstract

The utility model discloses a wood plastic extruding and granulating device, which relates to the technical field of granulating devices and comprises an extruder, a scraper granulating die head is mounted on the extruder, a first feeding fan is arranged below the scraper granulating die head, and the first feeding fan is connected with a first rotational flow cylinder through a first conveying pipe; the first rotational flow cylinder is connected with the second rotational flow cylinder through a second feeding pipe; the second cyclone cylinder is connected with the third cyclone cylinder; the end, connected with the first cyclone cylinder, of the second feeding pipe is further connected with a second feeding fan through a three-way pipe. And one end, connected with the second cyclone cylinder, of the third feeding pipe is connected with a third feeding fan through a three-way pipe. According to the wood-plastic particle conveying device, wind power generated by the first feeding fan conveys wood-plastic particles into the first rotational flow cylinder through the first conveying pipe, the temperature of compressed gas is generally low, and after the compressed gas makes contact with the high-temperature wood-plastic particles, heat exchange can be conducted through heat conduction. Heat of the wood-plastic particles is transferred to compressed gas, so that the temperature of the wood-plastic particles is reduced; therefore, cooling treatment of the wood-plastic particles is achieved.

Description

Technical Field

[0001] This utility model specifically relates to the field of granulation equipment technology, and more specifically to a wood-plastic extrusion granulation device. Background Technology

[0002] Wood-plastic composite (WPC) is a new type of environmentally friendly composite material. It is made from wood (such as wood flour, sawdust, bamboo powder, bamboo fiber, etc.) and plastics (such as polyethylene, polypropylene, polyvinyl chloride, etc.) as the main raw materials, and processed through special processes.

[0003] Chinese Patent Publication No. CN206123985U discloses a wood pelletizing machine, mainly comprising a feeder, a barrel, a cutter, a drive motor, and a gearbox. The barrel contains twin screws and an exhaust port. The feeder is connected to a discharge channel via a feeding channel. The discharge channel has an opening at its top, through which a magnet enters the discharge channel. An air inlet is located on one side of the discharge channel, below the outlet of the feeding channel. The feeder includes a stirring device, and the feeding channel contains a motor-driven propulsion mechanism and a heater. The barrel also has a vacuum extraction port with a switching valve, and the exhaust port has a valve.

[0004] The granulator in the aforementioned patent lacks a cooling device after granulation, making it impossible to cool the wood-plastic granules and easily causing them to stick together. Without cooling, the hot granules may require a long time to cool naturally, which would occupy production space and equipment and affect the continuity of production. Utility Model Content

[0005] The purpose of this invention is to provide a wood-plastic extrusion granulation device that can cool the wood-plastic granules during granulation. Cooling can quickly solidify the wood-plastic granules, which helps to improve the hardness and strength of the granules and prevents them from deforming or sticking together due to high temperatures during subsequent processing or storage. This ensures that the granules have a regular shape and stable dimensions, thereby improving the quality and performance of the granules and solving the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wood-plastic extrusion granulation device includes an extruder, with a scraper granulation die head installed at the end of the extruder. A first feeding fan is provided below the scraper granulation die head, and the first feeding fan is connected to a first cyclone separator through a first conveying pipe. The first cyclone separator is connected to a second cyclone separator through a second feeding pipe. The second cyclone separator is connected to a third cyclone separator.

[0008] The second feeding pipe is connected to the first cyclone drum at one end, and is also connected to a second feeding fan via a T-junction pipe; the third feeding pipe is connected to the second cyclone drum at one end, and is connected to a third feeding fan via a T-junction pipe.

[0009] As a further technical solution of this utility model, the first swirl tube, the second swirl tube, and the third swirl tube are respectively installed on a bracket and fixedly connected by multiple corner brackets.

[0010] As a further technical solution of this utility model, a receiving hopper is fixed on the top of the first feeding blower, and the receiving hopper is located below the scraper granulation die head.

[0011] As a further technical solution of this utility model, a hopper is fixed at the feed inlet of the extruder; a screw feeder is provided on one side of the extruder; and the conveying pipe of the screw feeder extends to the top of the hopper.

[0012] As a further technical solution of this utility model, the second feeding pipe is connected to the discharge end of the first cyclone and the feed end of the second cyclone; the third feeding pipe is connected to the discharge end of the second cyclone and the feed end of the third cyclone.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, the first feeding blower uses its own generated air force to transport wood-plastic granules through the first conveying pipe to the first cyclone separator. The compressed gas is generally at a low temperature, and after contacting the high-temperature wood-plastic granules, heat exchange occurs through thermal conduction. The heat of the wood-plastic granules is transferred to the compressed gas, causing its own temperature to decrease; thus achieving the cooling treatment of the wood-plastic granules.

[0015] 2. In this invention, the compressed gas forms a swirling motion in the cyclone tube, which can continuously carry away the hot air around the wood-plastic particles, making it easier for the heat on the particle surface to dissipate and accelerating the cooling speed. The airflow in the cyclone tube keeps the wood-plastic particles in a suspended or semi-suspended state, and the particles are dispersed from each other, increasing the contact area with the gas, which is conducive to heat dissipation and thus enhances the cooling effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This utility model Figure 1 The main view.

[0018] Figure 3 This utility model Figure 2 Top view.

[0019] In the diagram: 1-Screw feeder, 2-Hopper, 3-Extruder, 4-Scraper granulation die head, 5-First feeding fan, 6-First conveying pipe, 7-First cyclone, 8-Second feeding pipe, 9-Second feeding fan, 10-Second cyclone, 11-Third feeding pipe, 12-Third feeding fan, 13-Third cyclone, 14-Receiving hopper, 15-Support. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 In this embodiment of the present invention, a wood-plastic extrusion granulation device includes an extruder 3, with a scraper granulation die 4 installed at the end of the extruder 3. A first feeding fan 5 is provided below the scraper granulation die 4, and the first feeding fan 5 is connected to a first cyclone 7 through a first conveying pipe 6. The first cyclone 7 is connected to a second cyclone 10 through a second feeding pipe 8. The second cyclone 10 is connected to a third cyclone 13.

[0022] The second feeding pipe 8 is connected to the first cyclone 7 at one end and is also connected to the second feeding fan 9 via a three-way pipe; the third feeding pipe 11 is connected to the second cyclone 10 at one end and is connected to the third feeding fan 12 via a three-way pipe.

[0023] By adopting the above technical solution, after granulation, the first feeding blower 5 uses its own generated air force to transport the wood-plastic granules through the first conveying pipe 6 to the first cyclone separator 7. The compressed gas is generally at a low temperature, and after contacting the high-temperature wood-plastic granules, heat exchange occurs through heat conduction. The heat of the wood-plastic granules is transferred to the compressed gas, causing its own temperature to decrease; thus achieving the cooling treatment of the wood-plastic granules.

[0024] Then, the compressed gas is conveyed through the second feeding pipe 8 and the second feeding fan 9 to the second cyclone separator 10, and then through the third feeding pipe 11 and the third feeding fan 12 to the third cyclone separator 13. In the cyclone separator, the compressed gas forms a swirling motion, which can continuously carry away the hot air around the wood-plastic particles, making it easier for the heat on the surface of the particles to dissipate and accelerating the cooling speed. The airflow in the cyclone separator keeps the wood-plastic particles in a suspended or semi-suspended state, and the particles are dispersed from each other, increasing the contact area with the gas, which is conducive to heat dissipation and thus enhances the cooling effect.

[0025] In this embodiment, the first vortex tube 7, the second vortex tube 10, and the third vortex tube 13 are respectively mounted on a bracket 15 and fixedly connected by multiple corner brackets. Elevating the first vortex tube 7, the second vortex tube 10, and the third vortex tube 13 using the bracket 15 facilitates the arrangement and installation of the second feeding pipe 8, the second feeding fan 9, the third feeding pipe 11, and the third feeding fan 12.

[0026] In this embodiment, a receiving hopper 14 is fixed on the top of the first feeding blower 5, and the receiving hopper 14 is located below the scraper granulation die head 4.

[0027] The scraper pelletizing die head 4 is a commercially available product. It has a multi-hole die head that uses a scraper to cut the wood-plastic fluid during extrusion, thereby achieving pelleting. This technology is existing technology, and its specific structure will not be described in detail.

[0028] The receiving hopper 14 is designed to facilitate the receiving of wood-plastic pellets and ensure that the wood-plastic pellets can be conveyed out using the first feeding fan 5.

[0029] In this embodiment, a hopper 2 is fixed at the feed inlet of the extrusion scraper granulation die head 4 machine 3; a screw feeder 1 is provided on one side of the extruder 3; the conveying pipe of the screw feeder 1 extends to the top of the hopper 2.

[0030] By adopting the above technical solution, the screw feeder 1 feeds the extruder 3, ensuring the continuity of wood-plastic pellet production.

[0031] In this embodiment, the second feeding pipe 8 is connected to the discharge end of the first cyclone 7 and the feed end of the second cyclone 10; the third feeding pipe 11 is connected to the discharge end of the second cyclone 10 and the feed end of the third cyclone 13.

[0032] The working principle of this invention is as follows: After granulation, the first feeding blower 5 uses its own generated air force to transport the wood-plastic granules through the first conveying pipe 6 to the first cyclone separator 7. The compressed gas is generally at a low temperature, and after contacting the high-temperature wood-plastic granules, heat exchange occurs through heat conduction. The heat of the wood-plastic granules is transferred to the compressed gas, causing its own temperature to decrease; thus, the cooling treatment of the wood-plastic granules is achieved.

[0033] Then, the compressed gas is conveyed through the second feeding pipe 8 and the second feeding fan 9 to the second cyclone separator 10, and then through the third feeding pipe 11 and the third feeding fan 12 to the third cyclone separator 13. In the cyclone separator, the compressed gas forms a swirling motion, which can continuously carry away the hot air around the wood-plastic particles, making it easier for the heat on the surface of the particles to dissipate and accelerating the cooling speed. The airflow in the cyclone separator keeps the wood-plastic particles in a suspended or semi-suspended state, and the particles are dispersed from each other, increasing the contact area with the gas, which is conducive to heat dissipation and thus enhances the cooling effect.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wood-plastic extrusion granulation device, characterized in that: The extruder (3) is equipped with a scraper granulation die (4) at its end. A first feeding fan (5) is provided below the scraper granulation die (4). The first feeding fan (5) is connected to a first cyclone separator (7) through a first conveying pipe (6). The first cyclone separator (7) is connected to a second cyclone separator (10) through a second feeding pipe (8). The second cyclone separator (10) is connected to a third cyclone separator (13). The second feeding pipe (8) is connected to the first cyclone (7) at one end and is also connected to the second feeding fan (9) through a three-way pipe; the third feeding pipe (11) is connected to the second cyclone (10) at one end and is connected to the third feeding fan (12) through a three-way pipe.

2. The wood-plastic extrusion granulation apparatus according to claim 1, characterized in that: The first swirl tube (7), the second swirl tube (10) and the third swirl tube (13) are respectively installed on a bracket (15) and fixedly connected by multiple corner brackets.

3. The wood-plastic extrusion granulation apparatus according to claim 1, characterized in that: The top of the first feeding blower (5) is fixed with a receiving hopper (14), which is located below the scraper granulation die head (4).

4. The wood-plastic extrusion granulation apparatus according to claim 1, characterized in that: The extruder (3) has a hopper (2) fixed at its feed inlet; a screw feeder (1) is provided on one side of the extruder (3); the feed pipe of the screw feeder (1) extends above the hopper (2).

5. The wood-plastic extrusion granulation apparatus according to claim 1, characterized in that: The second feeding pipe (8) is connected to the discharge end of the first cyclone (7) and the feed end of the second cyclone (10); the third feeding pipe (11) is connected to the discharge end of the second cyclone (10) and the feed end of the third cyclone (13).

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