Waste gas vacuum collection device of plastic granulation equipment

Abstract

The utility model relates to the technical field of waste gas treatment, and provides a plastic granulation equipment waste gas vacuum collection device which is characterized in that a first absorption shell is arranged on an exhaust port of an extruder in a covering manner; the vacuum pump communicates with the first absorption shell and is used for sucking waste gas entering the first absorption shell; the waste gas storage tank is arranged on one side of the vacuum pump and used for storing waste gas absorbed by the vacuum pump. By means of the technical scheme, the problems that in the prior art, the collection efficiency is not high in the waste gas collection process, and a large amount of space is occupied by a collection device are solved.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a vacuum collection device for waste gas from plastic granulation equipment. Background Technology

[0002] Plastic granulation is a crucial step in plastic recycling and reuse. During the granulation process, the heating, extrusion, and cutting of the plastic generate a large amount of waste gas containing harmful substances. This waste gas has a complex composition, typically including volatile organic compounds (VOCs), dust, and odorous gases. If this waste gas is released directly into the atmosphere without effective treatment, it will cause serious harm to the environment and human health.

[0003] Traditional waste gas treatment methods for plastic granulation equipment are often ineffective. Common methods, such as natural ventilation, not only fail to completely remove harmful substances from the waste gas but also lead to a decline in surrounding air quality and cause odor nuisance. The simple filtration devices used by some companies can only handle some larger particulate pollutants, and their ability to remove fine particles and volatile organic compounds is limited.

[0004] With increasingly stringent environmental protection requirements and growing public concern for the environment and health, the development of an efficient and reliable waste gas collection device for plastic granulation equipment has become an urgent need. Vacuum collection technology, due to its strong suction and good sealing properties, has shown potential advantages in the field of waste gas collection. However, existing vacuum collection devices still have some shortcomings when applied to plastic granulation equipment, such as low collection efficiency, easy clogging, high energy consumption, and high maintenance costs. Utility Model Content

[0005] This utility model proposes a vacuum collection device for waste gas from plastic granulation equipment, which solves the problems of low collection efficiency and large space occupation of collection devices in related technologies.

[0006] The technical solution of this utility model is as follows:

[0007] A vacuum collection device for waste gas from a plastic granulation equipment, used to collect waste gas generated during the extrusion process, comprising:

[0008] The first absorption shell is installed over the exhaust port of the extruder;

[0009] A vacuum pump is connected to the first absorption shell, and the vacuum pump is used to draw in the waste gas that enters the first absorption shell.

[0010] An exhaust gas storage tank is located on one side of the vacuum pump, and the exhaust gas storage tank is used to store the exhaust gas absorbed by the vacuum pump.

[0011] As a further technical solution, it also includes:

[0012] The second absorption shell is disposed on the extruder outlet and is connected to the vacuum pump. The second absorption shell is used to absorb the waste gas generated when the extruder discharges material.

[0013] As a further technical solution, the second absorbent shell has an opening at its lower part, and also includes:

[0014] A cooling water tank is located below the extruder outlet, and the second absorbent shell is located inside the cooling water tank. The cooling water tank is used to cool the plastic strips extruded by the extruder.

[0015] As a further technical solution, the second absorbent shell includes:

[0016] The U-shaped body has one end set on the extruder outlet and the other end set in the cooling water tank, and the bottom of the U-shaped body has the opening;

[0017] A door panel is hinged at one end to the U-shaped body. A processing space is formed between the extruder, the cooling water tank, and the door panel. After the door panel is rotated, the processing space is sealed or unsealed.

[0018] As a further technical solution, it also includes:

[0019] A pressure detection element is disposed on the U-shaped body, and the pressure detection element is used to detect the pressure within the processing space.

[0020] As a further technical solution, it also includes:

[0021] An exhaust gas treatment tank is connected to the exhaust gas storage tank, and the exhaust gas treatment tank is used to treat the exhaust gas collected in the exhaust gas storage tank.

[0022] As a further technical solution, the waste gas treatment tank has a treatment space, and the waste gas treatment tank has an air inlet and an air outlet, the air inlet and the air outlet being connected to the treatment space, and further includes:

[0023] A plurality of baffles are disposed inside the waste gas treatment tank, and the plurality of baffles divide the treatment space. The air inlet and the air outlet are respectively located on both sides of the baffles.

[0024] Activated carbon is located between several of the barrier plates and is used to adsorb harmful substances in the waste gas.

[0025] The working principle and beneficial effects of this utility model are as follows:

[0026] In this invention, during the production of regular plastic granules, waste plastic is typically heated and melted by an extruder and extruded into plastic strips. These strips are then cooled in a water tank and uniformly cut into plastic granules. Harmful waste gases from the molten plastic are generated at the exhaust ports and connections of the extruder and granulator. If left untreated, these gases can pollute the production environment and harm the health of workers. In this design, a first absorption shell is installed at the exhaust port of the granulator, allowing for direct collection of waste gases at the source, reducing leakage and diffusion, and improving collection efficiency. The suction of the vacuum pump effectively draws the waste gases into the first absorption shell, ensuring rapid extraction and preventing residue in the working environment. The first absorption shell is a sealed structure, occupying less space and providing better absorption compared to traditional absorption hoods. A waste gas storage tank centrally stores the waste gases absorbed by the vacuum pump, facilitating subsequent unified treatment or discharge and reducing the environmental harm caused by direct emissions. The overall device structure is relatively simple, easy to install and maintain, reducing operating costs and maintenance difficulty. This solution specifically addresses the issue of exhaust gas emissions during granulator production, helping to improve the working environment and reduce the impact on the health of operators. Attached Figure Description

[0027] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a top view of the present invention;

[0030] Figure 3 This utility model Figure 2 Sectional view at point A in the middle;

[0031] Figure 4 This utility model Figure 2 Sectional view at point B.

[0032] In the diagram: 2. Extruder, 3. First absorption shell, 4. Exhaust port, 5. Vacuum pump, 6. Waste gas storage tank, 7. Second absorption shell, 8. Cooling water pool, 9. U-shaped main body, 10. Opening, 11. Door panel, 12. Processing space, 13. Pressure detection device, 14. Waste gas treatment tank, 15. Air inlet, 16. Air outlet, 17. Baffle plate, 18. Activated carbon. Detailed Implementation

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of this utility model. For those skilled in the art, they can be understood as further technical solutions without creative effort. In some drawings, components with the same structure or function are only schematically illustrated, or only one is marked. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0034] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Reference Figures 1-4 This first embodiment of the present invention proposes a vacuum collection device for waste gas from a plastic granulation equipment, used to collect waste gas generated during the production process of the granulator 1 and the extruder 2. The device includes: a first absorption shell 3 covering the exhaust port 4 of the granulator 1; a vacuum pump 5 connected to the first absorption shell 3, the vacuum pump 5 being used to draw in the waste gas entering the first absorption shell 3; and a waste gas storage tank 6 disposed on one side of the vacuum pump 5, the waste gas storage tank 6 being used to store the waste gas absorbed by the vacuum pump 5.

[0037] In this embodiment, during the production of regular plastic granules, waste plastic is typically heated and melted by an extruder 2 and extruded into plastic strips. After cooling in a water tank, the strips are uniformly cut into plastic granules. Harmful waste gases from the melting plastic are generated at the exhaust ports 4 of the extruder 2 and the granulator 1. If left untreated, this can pollute the production environment and harm the health of production personnel. In this solution, a first absorption shell 3 is installed over the exhaust port 4 of the granulator 1, allowing for direct collection of waste gases at the source, reducing leakage and diffusion, and improving collection efficiency. The suction of the vacuum pump 5 effectively draws the waste gases into the first absorption shell 3, ensuring rapid extraction and preventing residue in the working environment. The first absorption shell 3 is a sealed structure, occupying less space and providing better absorption compared to traditional absorption hoods. The waste gas storage tank 6 centrally stores the waste gases absorbed by the vacuum pump 5, facilitating subsequent unified treatment or discharge and reducing the environmental harm caused by direct emissions. The overall device structure is relatively simple, easy to install and maintain, reducing equipment operating costs and maintenance difficulty. This invention specifically addresses the issue of exhaust gas emissions during the production process of granulator 1, which helps improve the working environment and reduce the impact on the health of operators.

[0038] As a further technical solution, it also includes: a second absorption shell 7 is disposed on the discharge port of the extruder 2, the second absorption shell 7 is connected to the vacuum pump 5, and the second absorption shell 7 is used to absorb the waste gas generated when the extruder 2 discharges.

[0039] In this embodiment, the second absorber shell 7 is installed at the outlet of the extruder 2, and its function is basically the same as that of the first absorber shell 3. It can collect the exhaust gas generated during the extruder 2's discharge in a timely manner, preventing this exhaust gas from being directly emitted into the environment, and further improving the comprehensiveness of exhaust gas collection. Connected to the vacuum pump 5, it ensures that this exhaust gas can also be effectively extracted and transported, enhancing the entire device's ability to collect exhaust gas from different locations. Targeting the specific stage of extruder 2's discharge improves the targeting and accuracy of the collection, reducing the leakage of exhaust gas. It helps maintain a clean working environment near the extruder 2's outlet, reducing the health hazards of exhaust gas to operators. This improves the exhaust gas collection system of the entire plastic granulation equipment, enabling the device to more effectively handle multiple stages that generate exhaust gas during the plastic granulation process.

[0040] As a further technical solution, the second absorbent shell 7 has an opening 10 below it, and also includes: a cooling water pool 8 disposed below the discharge port of the extruder 2, the second absorbent shell 7 being located inside the cooling water pool 8, and the cooling water pool 8 being used to cool the plastic strip extruded by the extruder 2.

[0041] In this embodiment, during operation, after the vacuum pump 5 is turned on, the cooling water tank 8 is located below the extruder 2's discharge port, enabling timely cooling of the extruded plastic strips and improving the molding quality and production efficiency. The second absorption shell 7 is located within the cooling water tank 8, allowing the high-temperature exhaust gas generated during extrusion to rapidly cool upon contact with the water in the cooling water tank 8, helping to reduce the volatilization of harmful substances in the exhaust gas and improving exhaust gas collection efficiency. Utilizing the water in the cooling water tank 8 for preliminary cooling of the exhaust gas reduces the difficulty and cost of subsequent exhaust gas treatment. The opening 10 facilitates the entry of exhaust gas into the second absorption shell 7 without affecting the entry of the plastic strips into the cooling water tank 8 for cooling. This integrated design saves space, making the device structure more compact and improving energy and resource utilization efficiency.

[0042] As a further technical solution, the second absorption shell 7 includes: a U-shaped body 9 with one end disposed on the discharge port of the extruder 2 and the other end disposed in the cooling water tank 8, the bottom of the U-shaped body 9 having the opening 10; a door panel 11 with one end hinged to the U-shaped body 9, a processing space 12 being formed between the extruder 2, the cooling water tank 8 and the door panel 11, the processing space 12 being sealed or unsealed after the door panel 11 is rotated.

[0043] In this embodiment, the design of the U-shaped body 9 can better adapt to the discharge position of the extruder 2, ensuring effective collection of exhaust gas, while also facilitating cooperation with the door panel 11 to form the processing space 12. The door panel 11 is hinged to the U-shaped body 9, and the sealing or opening of the processing space 12 can be flexibly controlled by rotating the door panel 11. It can be opened when maintenance or cleaning is required, and sealed during normal operation, ensuring the stability and reliability of exhaust gas collection. When the processing space 12 is sealed, the efficiency of exhaust gas collection can be improved, preventing exhaust gas from leaking into the external environment and enhancing the environmental performance of the device. During the exhaust gas collection process, water in the cooling water tank will enter the processing space through the opening under the suction of the vacuum pump, and eventually tend to a stable state under the action of gravity. At this time, the water level will not directly contact the discharge port of the base machine, but will be relatively close to the discharge port. The extruded plastic rod will not have a large drop difference with the water surface after extrusion, reducing the deformation time and enabling faster shaping. This openable structure makes it convenient for operators to observe and handle problems during the discharge and cooling process of the extruder 2, improving the operability and maintenance convenience of the equipment. The door panel 11 and the U-shaped body 9 have a relatively simple mating structure, low manufacturing and installation costs, and good durability and sealing performance.

[0044] As a further technical solution, it also includes: a pressure detection element 13 is disposed on the U-shaped body 9, and the pressure detection element 13 is used to detect the pressure in the processing space 12.

[0045] In this embodiment, the pressure detection element 13 can monitor the pressure within the processing space 12 in real time, allowing operators to easily understand the working status and effectiveness of the waste gas collection system. Pressure data can promptly detect any abnormalities such as blockages or leaks in the waste gas collection system, enabling timely maintenance measures to ensure the normal operation of the device. This also helps optimize the operating parameters of the vacuum pump 5, providing a further technical solution to continuously improve the overall performance of the waste gas collection device. Furthermore, it can provide early warnings of potential faults, reducing the risk of equipment damage and production interruptions, and improving the continuity and stability of production.

[0046] As a further technical solution, it also includes: the waste gas treatment tank 14 is connected to the waste gas storage tank 6, and the waste gas treatment tank 14 is used to treat the waste gas collected in the waste gas storage tank 6.

[0047] In this embodiment, the waste gas treatment tank 14 further treats the waste gas collected in the waste gas storage tank 6, reducing the content of harmful substances in the waste gas and minimizing environmental pollution. This creates a complete treatment process for the entire waste gas collection device, from collection to preliminary storage and final treatment, improving the device's functionality and overall processing capacity. After treatment by the waste gas treatment tank 14, the emitted waste gas can meet stricter environmental standards, avoiding legal risks and damage to the company's image due to non-compliance with emission standards.

[0048] As a further technical solution, the waste gas treatment tank 14 has a treatment space 12, an air inlet 15 and an air outlet 16, the air inlet 15 and the air outlet 16 are connected to the treatment space 12, and further includes: a plurality of baffle plates 17 disposed in the waste gas treatment tank 14, the plurality of baffle plates 17 separating the treatment space 12, the air inlet 15 and the air outlet 16 being located on both sides of the baffle plates 17; activated carbon 18 is located between the plurality of baffle plates 17, the activated carbon 18 being used to adsorb harmful substances in the waste gas.

[0049] In this embodiment, multiple baffles 17 divide the treatment space 12, extending the flow path of the exhaust gas within the treatment tank, increasing the contact time and area between the exhaust gas and activated carbon 18, and improving the adsorption effect of activated carbon 18 on harmful substances. The inlet 15 and outlet 16 are located on both sides of the baffles 17, allowing the exhaust gas to flow fully through the activated carbon 18 area, ensuring thorough treatment and improving the purification level. Activated carbon 18 has excellent adsorption performance, effectively adsorbing harmful substances in the exhaust gas, such as volatile organic compounds and odorous gases, thereby reducing the pollution of the exhaust gas. This structural design is simple and practical; the combination cost of the baffles 17 and activated carbon 18 is relatively low, easy to install and replace, and convenient to maintain. It can stably treat exhaust gas, ensuring that the treated exhaust gas meets higher emission standards and reducing negative environmental impacts.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A vacuum collection device for waste gas from a plastic granulation equipment, used to collect waste gas generated during the production process of an extruder (2), characterized in that, include: The first absorption shell (3) is installed over the exhaust port (4) of the extruder (2); A vacuum pump (5) is connected to the first absorption shell (3), and the vacuum pump (5) is used to draw in the waste gas that enters the first absorption shell (3); An exhaust gas storage tank (6) is disposed on one side of the vacuum pump (5), and the exhaust gas storage tank (6) is used to store the exhaust gas absorbed by the vacuum pump (5).

2. The vacuum collection device for waste gas from a plastic granulation equipment according to claim 1, characterized in that, Also includes: The second absorption shell (7) is disposed on the discharge port of the extruder (2). The second absorption shell (7) is connected to the vacuum pump (5). The second absorption shell (7) is used to absorb the waste gas generated when the extruder (2) discharges.

3. The vacuum collection device for waste gas from a plastic granulation equipment according to claim 2, characterized in that, The second absorbent shell (7) has an opening (10) at its lower part and further includes: A cooling water tank (8) is located below the discharge port of the extruder (2), and the second absorption shell (7) is located inside the cooling water tank (8). The cooling water tank (8) is used to cool the plastic strips extruded by the extruder (2).

4. The vacuum collection device for waste gas from a plastic granulation equipment according to claim 3, characterized in that, The second absorbent shell (7) includes: The U-shaped body (9) has one end set on the discharge port of the extruder (2) and the other end set in the cooling water pool (8). The bottom of the U-shaped body (9) has the opening (10). The door panel (11) is hinged at one end to the U-shaped body (9). A processing space (12) is formed between the extruder (2), the cooling water pool (8) and the door panel (11). After the door panel (11) is rotated, the processing space (12) is sealed or unsealed.

5. The vacuum collection device for waste gas from a plastic granulation equipment according to claim 4, characterized in that, Also includes: A pressure detection element (13) is disposed on the U-shaped body (9) and is used to detect the pressure in the processing space (12).

6. The vacuum collection device for waste gas from a plastic granulation equipment according to claim 1, characterized in that, Also includes: Waste gas treatment tank (14) is connected to the waste gas storage tank (6), and the waste gas treatment tank (14) is used to treat the waste gas collected in the waste gas storage tank (6).

7. The vacuum collection device for waste gas from a plastic granulation equipment according to claim 6, characterized in that, The waste gas treatment tank (14) has an adsorption space (19) inside, and the waste gas treatment tank (14) has an air inlet (15) and an air outlet (16). The air inlet (15) and the air outlet (16) are connected to the adsorption space (19), and further include: A plurality of barrier plates (17) are disposed in the adsorption space (19), and the plurality of barrier plates (17) separate the adsorption space (19). The air inlet (15) and the air outlet (16) are respectively located on both sides of the barrier plate (17). Activated carbon (18) is located between several of the barrier plates (17) and is used to adsorb harmful substances in the waste gas.

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