Surface dust cleaning device for flexible air pipe and fresh air system

Abstract

The utility model discloses a surface dust cleaning device and a fresh air system for a flexible air pipe, the surface dust cleaning device comprises an air pipe arranged in the flexible air pipe, the air pipe comprises an air inlet and air outlets, and the multiple air outlets are sequentially arranged in the length extension direction of the flexible air pipe; the air inlet is connected with a high-pressure air source; the air outlet faces the air outlet direction. According to the surface dust cleaning device for the flexible air pipe, the air pipe system with the multiple air outlets is arranged in the flexible air pipe, and automatic dust cleaning is achieved through high-pressure airflow directional impact. The risk of manual high-altitude operation is avoided, and vibration conduction can be enhanced by means of the flexible characteristic of the air pipe, so that the dust cleaning efficiency is improved; the multiple nozzles arranged at intervals in the extending direction of the air pipe form a continuously-covered impact face, the problem that blind areas exist in traditional point type cleaning is solved, and dust attachment is effectively solved in cooperation with pulse type airflow generated by a high-pressure air source.

Description

Technical Field

[0001] This utility model relates to the field of cleaning device technology, and more specifically, to a surface dust cleaning device for flexible air ducts and a fresh air system. Background Technology

[0002] Lithium-ion batteries are a type of green rechargeable battery with outstanding advantages such as high voltage, high energy density, high safety performance, good cycle performance, low self-discharge, no memory effect, and low cost. Since their successful development in the 1990s, they have experienced rapid application and development. In recent years, the application scope of lithium-ion batteries has become increasingly wide, including electric vehicles such as commercial vehicles and passenger cars; energy storage systems such as hydropower, thermal power, wind power, and solar power plants; as well as power tools, electric bicycles, electric motorcycles, low-speed electric vehicles, military equipment, aerospace, and many other fields.

[0003] The cathode material is the most expensive component of a lithium-ion battery, and its performance plays a decisive role in the battery's overall performance. The commonly used industrial method for preparing dispersed LFP cathode materials involves: metering and mixing precursors, lithium sources, sugar sources, and deionized water; grinding; spray drying; furnace sintering; pulverizing; iron removal by sieving; and packaging to obtain the finished product. For ternary cathode materials, the method involves: metering and mixing precursors, lithium sources, and additives; furnace sintering (first sintering); pulverizing; mixing and coating; furnace sintering (second sintering); pulverizing; iron removal by sieving; and packaging to obtain the finished product. Both LFP and ternary cathode materials require a furnace sintering process throughout their entire manufacturing process. The sintering temperature for LFP cathode materials is between 700-900℃, while the sintering temperature for ternary cathode materials is between 1000-1500℃. To ensure the comfort of kiln workshop operators, fresh air is continuously supplied to the kiln workshop through fans. The fresh air is delivered to the kiln workshop through air ducts arranged between kilns and in walkways, ensuring a comfortable environment. Currently, the air ducts are mainly made of fiber fabric.

[0004] During long-term production, the surface of the ventilation ducts in the kiln workshop accumulates a large amount of dust. This dust has a complex composition, and if it is not cleaned in time, it will either enter the products, affecting product quality, or, if it accumulates too much, seriously affect the appearance. The traditional method of dust cleaning is manual cleaning, which not only poses certain safety risks (the ventilation ducts are more than 4 meters above the ground), but also has a certain degree of lag.

[0005] Therefore, how to provide a device that can automatically clean the dust off the surface of air ducts has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0006] The purpose of this invention is to provide a device that can automatically clean dust off the surface of air ducts.

[0007] This utility model provides a surface dust cleaning device for flexible air ducts, comprising:

[0008] An air duct is placed inside a flexible duct. The air duct includes an air inlet and an air outlet. Multiple air outlets are arranged sequentially along the length of the flexible duct. The air inlet is connected to a high-pressure air source. The air outlet is connected to a nozzle that faces the inner wall of the flexible duct in the direction of airflow. The air duct is equipped with a valve for controlling the opening and closing of the air passage inside the air duct.

[0009] Optionally, the trachea includes the main trachea and the bronchi;

[0010] The main air duct is installed inside the flexible air duct and extends along the length of the flexible air duct.

[0011] The bronchi are ring-shaped and include multiple bronchi that are coaxially arranged with the flexible air duct. The multiple bronchi are spaced apart along the length of the main air duct and are all connected to the main air duct.

[0012] Multiple nozzles are arranged sequentially around the circumference of the bronchus.

[0013] Optionally, four nozzles are provided on each bronchus, with the four nozzles evenly spaced around the circumference of the bronchus.

[0014] Optionally, the distance between two adjacent bronchi is 2 to 3 meters.

[0015] Optionally, the valve is an electrically controlled valve, which is installed in the air passage between the main air pipe and the branch air pipe.

[0016] Optionally, the surface dust cleaning device for flexible ducts also includes an electrical control system, which is connected to the electrical control valve via an electrical signal.

[0017] Optionally, the electrical control system includes a PLC.

[0018] Optionally, a weighing sensor is installed inside the flexible duct to detect the amount of dust accumulating on the surface of the fabric duct.

[0019] Optionally, the load cell is a photoelectric load cell.

[0020] The second aspect of this utility model provides a fresh air system with a flexible duct, wherein the interior of the flexible duct is provided with a surface dust cleaning device as described in any of the first aspects of this utility model.

[0021] Based on the technical content disclosed in this utility model, the following beneficial effects are achieved:

[0022] This utility model provides a surface dust cleaning device for flexible air ducts. It cleverly utilizes a multi-outlet air duct system within the flexible duct to achieve automated dust removal through directional impact of high-pressure airflow. Specifically, the built-in air duct layout avoids the risks of manual high-altitude operations and enhances vibration transmission through the duct's flexibility, thus improving cleaning efficiency. Multiple nozzles spaced along the duct's extension direction form a continuously covering impact surface, completely solving the blind spot problem inherent in traditional point-based cleaning. Combined with the pulsed airflow generated by the high-pressure air source, it effectively eliminates dust adhesion. The intermittent blowing strategy with precise valve control ensures effective dust removal while reducing energy consumption, truly achieving timed and unmanned management of cleaning operations.

[0023] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0025] Figure 1 This is a radial cross-sectional schematic diagram of the surface dust cleaning device for flexible air ducts according to the present invention.

[0026] Figure 2 This is a schematic diagram of the axial section of the surface dust cleaning device for flexible air ducts according to the present invention.

[0027] Explanation of reference numerals in the attached diagram: 1. Flexible duct; 2. Main air duct; 3. Branch air duct; 4. Nozzle; 5. Valve. Detailed Implementation

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0029] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0030] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0031] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0033] See Figure 1 and Figure 2 This utility model discloses a surface dust cleaning device for flexible air ducts. The main body of the device consists of three parts: an internal air duct system, a high-pressure air source assembly, and an electrical control module. The air duct system includes a main air duct 2 and branch air ducts 3. The main air duct 2 runs through the flexible air duct 1 along its length, and the main air duct 2 extends in the same direction as the flexible air duct 1. The air inlet of the main air duct 2 is connected to an external air compressor unit (not shown in the figure), which is the high-pressure air source that provides high-pressure air to the main air duct 2. An air outlet is provided every 2-3 meters along the length of the main air duct 2. A ring-shaped branch pipe 3 is installed every 2-3 meters inside the flexible duct 1. The ring-shaped branch pipe 3 is coaxial with the flexible duct 1. The air inlet end of the ring-shaped branch pipe 3 is connected to the air outlet of the main air pipe 2. In some embodiments, the main air pipe 2 includes multiple segments, and two adjacent segments are connected by a T-joint. The other end of the T-joint is connected to the air inlet end of the ring-shaped branch pipe 3, so as to realize the air passage connection between the main air pipe 2 and the branch pipe 3. Of course, in some embodiments, the T-joint may not be used. It is only necessary to set an air outlet every 2-3 meters along the length of the main air pipe 2. Each air outlet is directly welded or connected to a connecting pipe by other means. The other end of the connecting pipe is connected to the air inlet end of the ring-shaped branch pipe 3. Four compressed air nozzles 4 are equidistantly arranged around the annular bronchial pipe 3. The air outlet direction of the nozzles 4 is towards the inner wall of the flexible duct 1. The nozzles 4 are 130mm-160mm away from the inner wall of the duct. A valve 5 is installed on the air passage between the main air pipe 2 and the bronchial pipe 3 to control the opening and closing of the air passage in the air pipe. The valve 5 is controlled by a solenoid valve. The solenoid valve is connected to the PLC control cabinet through a shielded cable. The PLC controls the opening and closing of the valve 5.

[0034] The control program has two preset modes:

[0035] Timed mode: Automatically starts during the kiln shutdown interval, and performs a ash cleaning cycle every 8 hours;

[0036] Manual mode: Single-point / segment cleaning can be triggered in real time via the touchscreen;

[0037] During the dust removal process, the PLC sequentially opens the solenoid valves of the target area. The duration of a single pulse is 0.8-1.2 seconds, and the interval between adjacent pulses is 2 seconds to avoid a sudden drop in air pressure.

[0038] Alternatively, a weighing sensor can be installed inside the flexible duct 1 to determine the amount of dust accumulated on the surface of the fabric duct, thereby automatically activating the dust removal function. Specifically, a photoelectric weighing sensor is selected to detect the amount of dust inside the flexible duct 1. In this embodiment, the photoelectric weighing sensor is selected from Xi'an Xinsheng Hongchuang Sensor Co., Ltd., which has shown good feedback in practical applications. When the sensor detects the dust accumulation threshold in the duct, the PLC sends a command to start the air compressor. Compressed air (pressure 0.6-0.8MPa) is delivered to the target branch duct 3 through the main air pipe 2. After the solenoid valve is opened, high-pressure airflow is simultaneously ejected from four nozzles. The airflow impact causes the flexible duct to vibrate at high frequency, and the attached dust is removed from the surface under the action of inertial force. After the dust removal is completed, the system automatically shuts off the air circuit and sends a status signal.

[0039] This utility model also discloses a fresh air system having the above-mentioned flexible duct, wherein the interior of the flexible duct is provided with any of the above-mentioned surface dust cleaning devices.

[0040] In summary, the surface dust cleaning device for flexible ducts provided by this utility model significantly improves cleaning efficiency and safety while achieving automated dust removal. The core device adopts a composite structure of a built-in main air pipe 2 and annular branch pipes 3. A three-dimensional dust removal network is formed by the annular branch pipes arranged axially at 2-3 meter intervals. Combined with four nozzles 4 evenly distributed around the circumference of each branch pipe 3, this generates high-frequency vibrations with high coverage on the surface of the flexible duct 1. Compared to traditional manual cleaning, dust removal efficiency is greatly improved, and the risks of working at heights are completely avoided. Through the coordinated action of electrically controlled valves and a PLC control system, the system can accurately execute a 0.8-1.2 second pulse jet cleaning strategy, and the intelligent start-stop function ensures seamless integration of dust removal operations with production cycles.

[0041] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A surface dust cleaning device for a flexible duct, characterized by, It comprises: A trachea placed inside the flexible air duct, the trachea comprising an air inlet and an air outlet, a plurality of air outlets being arranged in sequence along the length direction of the flexible air duct; the air inlet is connected to a high-pressure air source; the air outlet is communicated with a nozzle whose air outlet direction is towards the inner wall of the flexible air duct; the trachea is provided with a valve for controlling the on-off of the air path in the trachea; The trachea comprises a main trachea and a branch trachea; The main trachea is arranged inside the flexible air duct, and the main trachea extends along the length direction of the flexible air duct; The branch trachea is annular, comprising a plurality of branch tracheas arranged coaxially with the flexible air duct, a plurality of branch tracheas being arranged at intervals along the length direction of the main trachea and being communicated with the main trachea; A plurality of nozzles are arranged in sequence in the circumferential direction of the branch trachea.

2. The surface dust cleaning device for the flexible air duct according to claim 1, wherein: Four nozzles are arranged on each branch trachea, and the four nozzles are arranged at equal intervals in the circumferential direction of the branch trachea.

3. The surface dust cleaning device for the flexible air duct according to claim 1, wherein: The distance between two adjacent branch tracheas is 2-3 meters.

4. The surface dust cleaning device for the flexible air duct according to any one of claims 1-3, wherein: The valve is an electric control valve, and the electric control valve is arranged on the air path between the main trachea and the branch trachea.

5. The surface dust cleaning device for the flexible air duct according to claim 4, wherein: The surface dust cleaning device for the flexible air duct further comprises an electric control system, and the electric control system is electrically connected with the electric control valve.

6. The surface dust cleaning device for the flexible air duct according to claim 5, wherein: The electric control system comprises a PLC.

7. The surface dust cleaning device for the flexible air duct according to any one of claims 1-3, wherein: A weighing sensor is arranged inside the flexible air duct, and the weighing sensor is used for detecting the surface dust condition of the fabric air duct.

8. The surface dust cleaning device for the flexible air duct according to claim 7, wherein: The weighing sensor is a photoelectric weighing sensor.

9. A fresh air system with a flexible duct, characterized in that The inside of the flexible air duct is provided with the surface dust cleaning device according to any one of claims 1-8.

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