A mixer exhaust system integrating pulse cleaning and dust recycling

Abstract

The utility model belongs to the mixing machine exhaust technical field, concretely relates to a kind of integrated pulse cleaning and dust recycling mixing machine exhaust system, comprising: cylinder, cylinder lower end is provided with air inlet, pre-separation cover, finned heating tube group and filter core are sequentially arranged in cylinder from bottom to top, cylinder is provided with the setting and is provided with blowing pipe, blowing pipe one end is towards filter core, blowing pipe other end is communicated with compressed air storage tank, and electromagnetic pulse valve is provided on blowing pipe.The system uses multiple sensors to cooperate, inlet / outlet humidity sensor real-time monitoring, PLC dynamic adjustment dust removal frequency, forms closed-loop control, can effectively separate particulate matter and small molecule substance in gas.

Description

Technical Field

[0001] This utility model belongs to the field of exhaust technology for mixing machines, specifically relating to an exhaust system for mixing machines that integrates pulse cleaning and dust recycling. Background Technology

[0002] In industrial production, mixers, as key equipment for material mixing, are widely used in various industries such as chemical, building materials, food, and pharmaceutical. During the operation of a mixer, to ensure stable internal pressure and maintain a good working environment, it is necessary to vent the gases generated during the mixing process. Currently, during the hot mixing process in mixers, PVC resin powder and other additives decompose and volatilize many small molecules, which existing mixers cannot effectively separate. Utility Model Content

[0003] Therefore, this invention aims to solve the problem that in the existing technology, during the hot mixing process of a mixer, PVC resin powder and other additives decompose and volatilize many small molecules, which the existing mixer cannot effectively separate.

[0004] Therefore, the technical solution adopted is an exhaust system for a mixer that integrates pulse cleaning and dust recycling, comprising: a cylinder, an air inlet at the lower end of the cylinder, a pre-separation hood, a finned heating tube assembly and a filter element arranged sequentially from bottom to top inside the cylinder, a blowpipe on the cylinder, one end of the blowpipe facing the filter element, the other end of the blowpipe connected to a compressed air storage tank, and an electromagnetic pulse valve on the blowpipe.

[0005] Preferably, the top of the cylinder is connected to the exhaust pipe, and an exhaust fan is installed at the top of the exhaust pipe.

[0006] Preferably, the angle between the pre-separation hood and the horizontal plane is 30° to 45°.

[0007] Preferably, the outlet of the pre-separation hood is connected to the inlet of the finned heating tube assembly through a sealed pipe, the heating tubes of the finned heating tube assembly are arranged in an alternating pattern at a 15° angle, and the outlet of the finned heating tube assembly is connected to the inlet of the filter element through a sealed pipe.

[0008] Preferably, the filter element is a PTFE membrane filter element.

[0009] Preferably, the surface pore size of the filter element is 0.1 to 0.3 μm.

[0010] The advantages of this utility model are as follows: the pre-separation hood pre-separates the powder, and most of the solid particles fall freely back into the mixing cylinder of the mixer when the hot mixing stops. The remaining dust, mixed with water vapor, continues to rise. The heating tubes of the finned heating tube group separate the solid and gas of the moist dust. The gas then passes through the filter element to intercept submicron particles and is finally discharged through the exhaust pipe and connected to the waste gas treatment equipment for treatment. Every certain period of time, the blower pipe pulses air to vibrate the filter element, clean the dust, and keep the filter element surface clean and breathable. After the mixing is completed, the exhaust system stops working, which can effectively separate particulate matter and small molecules in the gas.

[0011] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0012] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 yes Figure 1 Enlarged view of point A;

[0016] Figure 3 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 4 This is a top view of the present invention;

[0018] The components include: 1. cylinder; 2. air inlet; 3. pre-separation hood; 4. finned heating tube assembly; 5. filter element; 6. blow pipe; 7. compressed air storage tank; 8. electromagnetic pulse valve; 9. exhaust pipe; and 10. exhaust fan. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] This utility model provides an exhaust system for a mixer that integrates pulse cleaning and dust recycling, such as... Figure 1-4 As shown, the system includes: a cylinder 1, with an air inlet 2 at the lower end of the cylinder 1; inside the cylinder 1, from bottom to top, a pre-separation hood 3, a finned heating tube assembly 4, and a filter element 5; a blowpipe 6 is installed on the cylinder 1, with one end of the blowpipe 6 facing the filter element 5 and the other end connected to a compressed air storage tank 7; an electromagnetic pulse valve 8 is installed on the blowpipe 6; the pulse airflow pressure is 0.6MPa to 0.7MPa, the pulse airflow duration is 0.1-0.3 seconds, and the airflow temperature is 60℃ to 80℃; the dust removal cycle is dynamically adjusted by an intelligent control unit, with an adjustment range of 5 to 30 seconds. The intelligent control unit includes a PLC controller, a humidity sensor, and a temperature sensor. The humidity sensor is installed at the inlet of the pre-separation hood and the outlet of the PTFE membrane filter element. The intelligent control unit adjusts the heating tube temperature according to the real-time humidity sensor data, satisfying the following relationship: when the inlet humidity RH > 70%, the heating temperature T ≥ (0.5 × Q) + 50, where T is the heating temperature (℃) and Q is the gas flow rate (m³ / s). 3 / h), and the heating tube is activated when the inlet humidity RH>70%; the intelligent control unit dynamically adjusts the pulse cleaning cycle according to the outlet humidity RH, satisfying the following relationship: t=10×(RH / 20) (unit: s), where RH is the relative humidity of the outlet gas (unit: %).

[0024] The top of the cylinder 1 is connected to the exhaust pipe 9, and an exhaust fan 10 is installed at the top of the exhaust pipe 9 to provide power for gas discharge. The pre-separation hood 3 has an angle of 30° to 45° with the horizontal plane. The pre-separation hood 3 is also equipped with a cyclone centrifugal channel. The tangential inlet velocity of the cyclone centrifugal channel of the pre-separation hood is 2 to 3 m / s, which is used to intercept particles larger than 50 μm and reduce the load on subsequent processing. The outlet of the pre-separation hood 3 is connected to the inlet of the finned heating tube assembly 4 through a sealed pipe. The heating tubes of the finned heating tube assembly 4 are arranged in a staggered pattern at a 15° angle to enhance airflow turbulence and improve heat exchange efficiency. The outlet of the finned heating tube assembly 4 is connected to the inlet of the filter element 5 through a sealed pipe. It can heat the gas to 80° to 120° and reduce the relative humidity of the gas from greater than 70% to less than 40%, avoiding condensation and blockage of the filter element. The inclined layout reduces pressure loss, and the staggered arrangement extends the airflow path. The filter element 5 is a PTFE membrane filter element. Filter element 5 has a surface pore size of 0.1–0.3 μm, intercepting submicron particles. Its contact angle is greater than 110°, preventing moisture adhesion and making it suitable for high-humidity conditions. The PTFE material is corrosion-resistant and anti-adhesion, extending the filter element's lifespan.

[0025] The beneficial technical effects of the above technical solution are as follows: The air inlet 2 is installed on the hot mixing cylinder cover of the mixer and connected by a flange. When the mixer is running, the powder will enter the cylinder 1 with the stirring of the hot mixing blades. The pre-separation cover 3 pre-separates the powder. Most of the solid particles fall back into the hot mixing cylinder of the mixer when the hot mixing stops. The remaining dust mixed with water vapor continues to rise. The heating tubes of the finned heating tube group 4 separate the wet dust into solid and gas. The gas then passes through the filter element 5 to intercept submicron particles and is finally discharged through the exhaust pipe 9 and connected to the waste gas treatment equipment for treatment. Every certain period of time, the blow pipe 6 pulses air to vibrate the filter element 5, clean the dust, and keep the surface of the filter element 5 clean and breathable. After the mixing is completed, the exhaust system stops working, which can effectively separate particulate matter and small molecules in the gas.

[0026] This system employs multi-sensor collaboration, with inlet / outlet humidity sensors providing real-time monitoring and a PLC dynamically adjusting the cleaning frequency to form a closed-loop control. Through a three-tiered architecture, it progressively intercepts particles, balancing coarse particle separation with fine filtration, reducing filter element load. The heating and cleaning systems share an air source, and intelligent algorithms reduce energy redundancy. Heating dehumidification, hydrophobic filters, and dynamic cleaning solve the problem of filter element clogging under high humidity conditions. Dynamic control based on real-time data reduces manual intervention and improves system stability. It is suitable for mixing processes in high-dust, high-humidity industries such as chemical and food processing, offering the dual benefits of high-efficiency purification and resource recovery (e.g., dust interception and reuse).

[0027] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A mixing machine exhaust system integrating pulse cleaning and dust recycling, characterized in that, include: The cylinder (1) has an air inlet (2) at the lower end. Inside the cylinder (1), from bottom to top, there are a pre-separation cover (3), a finned heating tube assembly (4), and a filter element (5). A blow pipe (6) is installed on the cylinder (1). One end of the blow pipe (6) faces the filter element (5), and the other end of the blow pipe (6) is connected to the compressed air storage tank (7). An electromagnetic pulse valve (8) is installed on the blow pipe (6).

2. The mixing machine exhaust system integrating pulse cleaning and dust recycling according to claim 1, characterized in that, The top of the cylinder (1) is connected to the exhaust pipe (9), and an exhaust fan (10) is installed at the top of the exhaust pipe (9).

3. The mixing machine exhaust system integrating pulse cleaning and dust recycling according to claim 1, characterized in that, The angle between the pre-separation cover (3) and the horizontal plane is 30° to 45°.

4. The mixing machine exhaust system integrating pulse cleaning and dust recycling according to claim 1, characterized in that, The outlet of the pre-separation hood (3) is connected to the inlet of the finned heating tube assembly (4) through a sealed pipe. The heating tubes of the finned heating tube assembly (4) are arranged in an alternating 15° angle. The outlet of the finned heating tube assembly (4) is connected to the inlet of the filter element (5) through a sealed pipe.

5. The mixing machine exhaust system integrating pulse cleaning and dust recycling according to claim 1, characterized in that, The filter element (5) is a PTFE membrane filter element.

6. The mixing machine exhaust system integrating pulse cleaning and dust recycling according to claim 1, characterized in that, The surface pore size of the filter element (5) is 0.1 to 0.3 μm.

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