A plastic particle granulator feeding hopper with dust removal function
By installing a dust collection box and a baffle structure in the feed hopper of the plastic pellet mill, the problem of dust dispersion is solved, and the effective collection and treatment of dust is achieved, ensuring safety and health.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIANYUNGANG TONGSHUN PLASTIC PROD CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-09
AI Technical Summary
Traditional plastic pellet mills lack dust removal structures in their feed hoppers, leading to the escape of plastic dust, which can harm human health and pose an explosion risk.
Design a feed hopper with dust removal function. By setting dust collection boxes on the left, right and rear sides of the hopper, combined with inclined guide baffles and microporous structure, dust is collected and settled. Residual dust is treated with ventilation openings and filters.
It effectively reduces dust emission rate, minimizes harm to human health, lowers explosion risk, and enables centralized collection and treatment of dust.
Smart Images
Figure CN224334991U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of granulators, and specifically discloses a feed hopper for a plastic granulator with dust removal function. Background Technology
[0002] Waste plastic is one of the important raw materials for plastic pellets. It is crushed by a plastic pelletizer for recycling. The specific principle of the plastic pelletizer is to first crush these waste plastic objects, then heat and melt them, and then extrude them into the corresponding extruder. During the plastic crushing process, a large amount of plastic dust is generated. Plastic dust is very harmful to the human body. If inhaled into the alveoli through the respiratory tract, it can easily cause silicosis over a long period of time, and can also easily induce tuberculosis or pulmonary interstitial fibrosis. If plastic dust occurs continuously or frequently, the amount is enough to form a mixture of combustible dust and air, which poses a risk of explosion. Therefore, plastic dust should be dealt with in a timely manner to avoid disaster.
[0003] Traditional plastic pellet mills lack a dust removal structure in their feed hoppers, which cannot effectively collect and settle the dust in the plastic raw materials, resulting in a large amount of dust escaping. Therefore, a plastic pellet mill feed hopper with dust removal function is needed to solve this problem. Utility Model Content
[0004] This utility model proposes a feed hopper for a plastic granulator with dust removal function. The dust collection area is expanded by the dust collection boxes on the left, right and rear sides to reduce the dust emission rate. In conjunction with the guide baffle, the dust is blocked from directly escaping to the feed inlet, which promotes dust settling.
[0005] This utility model is implemented as follows: a plastic pellet granulator feed hopper with dust removal function includes a hopper, which is composed of a feed inlet on the upper end face, a settling chamber opened inside the hopper, and a discharge outlet. The settling chamber is provided with a dust collection structure.
[0006] The dust collection structure includes mounting ports on the left, right, and rear sides of the outer wall of the hopper, a dust collection plate fixedly connected to the inner wall of the settling chamber and located outside the mounting ports, a microhole penetrating the top of the dust collection plate, and a dust collection box slidably connected inside the mounting ports, wherein the upper end face of the dust collection box is an open structure.
[0007] The upper part of the inner wall of the settling chamber has multiple downwardly inclined guide baffles evenly distributed in the circumference. The upper edge of the guide baffles is fixed to the side wall of the settling chamber, and the lower edge extends towards the center of the hopper.
[0008] As a preferred embodiment of the present invention, the feed hopper of a plastic pellet mill with dust removal function has a ventilation opening connected to the outer wall of the hopper, a cover plate threaded to the outer wall of the ventilation opening, and a filter screen provided on the inner side of the cover plate.
[0009] Preferably, in the feed hopper of a plastic pellet mill with dust removal function according to this utility model, the top of the dust collection plate is inclined.
[0010] As a preferred embodiment of the present invention, the bottom end of the discharge port of the plastic pellet granulator with dust removal function is connected to a material guiding channel.
[0011] As a preferred embodiment of the dust removal function of the feeding hopper of the plastic pellet mill of this utility model, a sealing gasket is provided at the joint between the upper end face of the dust collection box and the mounting port.
[0012] As a preferred embodiment of the present invention, the feed hopper of a plastic pellet mill with dust removal function is provided with a sealing cap at the top of the feed inlet.
[0013] The beneficial effects of this utility model are:
[0014] As raw materials and dust fall into the large settling chamber, their speed decreases sharply. Dust carried by the airflow is blocked by the inclined guide baffle and guided downwards, promoting settling. It then enters the dust collection box through micropores for centralized collection. The dust collection area is expanded by the dust collection boxes on the left, right, and rear sides, adapting to the direction of dust diffusion and reducing the dust escape rate. In addition, the guide baffle prevents dust from directly escaping to the feed inlet and guides the dust downwards back to the settling chamber area, promoting dust settling. Attached Figure Description
[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0016] Figure 1 This is an overall structural diagram of the feed hopper of a plastic pellet granulator with dust removal function according to this utility model.
[0017] Figure 2 This is a front sectional view of the feed hopper of a plastic pellet granulator with dust removal function according to this utility model.
[0018] Figure 3 This is a structural diagram of the dust collection plate and dust collection box of this utility model.
[0019] The markings in the diagram are: 1. Hopper; 101. Feed inlet; 102. Discharge outlet; 2. Settling chamber; 201. Baffle; 3. Installation port; 301. Dust collection plate; 302. Micropores; 303. Dust collection box; 4. Ventilation port; 401. Cover plate; 402. Filter screen; 5. Material guide channel. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.
[0021] Please see Figure 1-3 A plastic pellet mill feed hopper with dust removal function includes a hopper 1. The hopper 1 is composed of a feed inlet 101 on the upper end face, a settling chamber 2 opened inside the hopper 1 and a discharge outlet 102. The settling chamber 2 is provided with a dust collection structure.
[0022] The dust collection structure includes mounting ports 3 on the left, right and rear sides of the outer wall of the hopper 1, a dust collection plate 301 fixedly connected to the inner wall of the settling chamber 2 and located outside the mounting port 3, a microhole 302 penetrating the top of the dust collection plate 301, and a dust collection box 303 slidably connected inside the mounting port 3. The upper end face of the dust collection box 303 is an open structure.
[0023] On the upper part of the inner sidewall of the settling chamber 2, there are multiple inclined downward guide baffles 201 evenly distributed in the circumference. The upper edge of the guide baffles 201 is fixed to the sidewall of the settling chamber 2, and the lower edge extends towards the center of the hopper 1.
[0024] In this embodiment: Plastic raw materials are poured in through the feed inlet 101. The raw materials and dust fall into the wide settling chamber 2, where the velocity decreases sharply. Dust carried by the airflow is blocked by the inclined guide baffle 201 and guided downwards, promoting settling. The dust falls onto the surface of the dust collection plate 301 and enters the dust collection box 303 through the micropores 302 for centralized collection. The micropores 302 allow dust to fall but block plastic particles. Operators can clean the dust by periodically pulling out the dust collection box 303. Under the inclined action of the guide baffle 201, the raw materials converge towards the middle of the settling chamber 2 and finally fall into the guide channel 5 from the discharge port 102 at the bottom of the settling chamber 2. They converge through the guide channel 5 and enter the granulator. Then, the dust collection area is expanded by the dust collection boxes 303 on the left, right and rear sides to adapt to the dust diffusion direction and reduce the dust emission rate. In addition, the guide baffle 201 prevents the dust from directly escaping to the feed port 101 and guides the dust downward back to the settling chamber 2 area to promote dust settling.
[0025] As a technical optimization of this utility model, the outer wall of the hopper 1 is connected to a ventilation port 4, and the outer wall of the ventilation port 4 is threadedly connected to a cover plate 401. A filter screen 402 is provided on the inner side of the cover plate 401.
[0026] In this embodiment: As material is continuously added, a slight positive pressure will be formed inside the hopper 1. This small amount of air is allowed to slowly escape through the vent 4. At the same time, the filter screen 402 effectively blocks residual dust from escaping with the air, maintaining the internal micro-pressure balance. The filter screen 402 can be replaced or cleaned by unscrewing the cover plate 401.
[0027] As a technical optimization of this utility model, the top of the dust collection plate 301 is inclined.
[0028] In this embodiment, the top of the dust collection plate 301 is tilted so that the plastic raw material can fall smoothly into the discharge port 102.
[0029] As a technical optimization of this utility model, the bottom end of the discharge port 102 of the hopper 1 is connected to the material guiding channel 5.
[0030] In this embodiment: the material guide channel 5 is connected to the granulator, and the plastic in the hopper 1 can smoothly enter the granulator through the material guide channel 5.
[0031] As a technical optimization of this utility model, a sealing gasket is provided at the joint between the upper end face of the dust collection box 303 and the mounting port 3.
[0032] In this embodiment, the sealing gasket ensures the airtightness between the dust collection box 303 and the mounting port 3, preventing dust from escaping from the hopper 1.
[0033] As a technical optimization of this utility model, a sealing cap is provided at the top of the feed inlet 101.
[0034] In this embodiment: the sealing cover is closed during non-feeding periods to prevent residual airflow from carrying dust out of the container.
[0035] The working principle and usage process of this utility model are as follows: Plastic raw materials are poured in through the inlet 101. The raw materials and dust fall into the wide settling chamber 2, where the velocity decreases sharply. Dust carried by the airflow is blocked by the inclined guide baffle 201 and guided downwards, promoting settling. The dust falls onto the surface of the dust collection plate 301 and enters the dust collection box 303 through the micropores 302 for centralized collection. The micropores 302 allow dust to fall but block plastic particles. Operators can periodically pull out the dust collection box 303 to clean the dust. Under the tilting action of the guide baffle 201, the plastic raw material gathers towards the middle of the settling chamber 2 and finally falls into the guide channel 5 through the discharge port 102 at the bottom of the settling chamber 2. It then gathers through the guide channel 5 and enters the granulator. As the material is continuously added, a slight positive pressure will be formed in the hopper 1. This small amount of air is allowed to be slowly discharged through the ventilation port 4. At the same time, the filter screen 402 effectively blocks residual dust from escaping with the air, maintaining the internal micro-pressure balance. The filter screen 402 can be replaced or cleaned by unscrewing the cover plate 401.
[0036] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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 utility model.
[0037] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. A plastic particle granulator feeding hopper with dust removal function, comprising a hopper (1), characterized in that: The hopper (1) consists of an inlet (101) on the upper end face, a settling chamber (2) inside the hopper (1) and an outlet (102). The settling chamber (2) is equipped with a dust collection structure. The dust collection structure includes an installation port (3) on the left and right sides and the rear side of the outer wall of the hopper (1), a dust collection plate (301) fixedly connected to the inner wall of the settling chamber (2) and located outside the installation port (3), a microhole (302) penetrating the top of the dust collection plate (301), and a dust collection box (303) slidably connected to the inside of the installation port (3). The upper end face of the dust collection box (303) is an open structure. The upper part of the inner wall of the settling chamber (2) is evenly distributed with multiple downward inclined guide baffles (201). The upper edge of the guide baffles (201) is fixed to the side wall of the settling chamber (2), and the lower edge extends toward the center of the hopper (1).
2. The feeding hopper of a plastic pelletizer with dust removal function according to claim 1, characterized in that: The outer wall of the hopper (1) is connected to a vent (4), and the outer wall of the vent (4) is threadedly connected to a cover plate (401). A filter screen (402) is provided on the inner side of the cover plate (401).
3. The feeding hopper of a plastic pelletizer with dust removal function according to claim 1, characterized in that: The top of the dust collection plate (301) is inclined.
4. The feeding hopper of a plastic pelletizer with dust removal function according to claim 1, characterized in that: The bottom end of the discharge port (102) of the hopper (1) is connected to a material guiding channel (5).
5. The feeding hopper of a plastic pelletizer with dust removal function according to claim 1, characterized in that: A sealing gasket is provided at the joint between the upper end face of the dust collection box (303) and the mounting port (3).
6. The feeding hopper of a plastic pelletizer with dust removal function according to claim 1, characterized in that: The top of the feed inlet (101) is provided with a sealing cap.