Self-cleaning anti-blocking nozzle for a mineral sorting machine

Abstract

The utility model discloses a kind of self-cleaning anti-blocking nozzles of mineral sorting machine, including nozzle body and its internal airflow passage.Its main improvement is that: the airflow passage middle section is equipped with spiral air guide core, for the airflow passing to produce high-speed rotating centrifugal force, to repel dust deposition;The outlet end of the nozzle body is rotatably provided with self-rotating fan blade, and the self-rotating fan blade is rotated by the driving of the ejected airflow, to remove the adherend of airflow from the inner wall of outlet.The utility model cooperates by the spiral air guide core and self-rotating fan blade, and high-efficiency online self-cleaning and anti-blocking can be realized by only using its own blowing airflow, and the structure is simple and reliable, which significantly improves the continuity and reliability of sorting operation.

Description

Technical Field

[0001] This utility model relates to the field of mineral sorting equipment technology, and in particular to a nozzle structure of a high-pressure air jet device for a mineral intelligent sorting machine. Background Technology

[0002] The array-type high-pressure air jet device is the core component of the intelligent mineral sorting machine. It achieves precise sorting of target minerals (such as coal gangue) by jetting high-speed airflow.

[0003] The nozzles of this device operate in a dusty, high-humidity environment for extended periods, making them highly susceptible to clogging. Dust deposits inside the nozzle channels, or sticky materials adhere to the outlet, leading to airflow deviation and weak blowing, severely reducing sorting accuracy and efficiency. Existing technologies often employ periodic shutdowns for manual cleaning or the addition of external dust removal systems. Chinese Utility Patent Application CN211217155U discloses a mineral sorting blowing device that uses a pressure-stabilizing chamber, a precision pressure regulating valve, and multi-layer filters to ensure airflow pressure and cleanliness, thereby indirectly reducing the risk of clogging and improving blowing stability. This solution focuses on the pre-treatment and pressure management of the air path system but does not alter the nozzle structure itself, and cannot actively remove adhesive clogging that has already occurred inside the nozzle and at the outlet. Chinese Utility Patent Application CN222153010U discloses a closely spaced nozzle structure for mineral processing, the core of which lies in optimizing the nozzle array layout and air intake direction. Through the design of multiple air intake planes with different tilt angles, it aims to achieve precise spraying and sorting of falling ore. This solution mainly addresses the issues of spray coverage and accuracy, but it does not address the anti-clogging and self-cleaning design of the nozzle body. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a self-cleaning anti-clogging nozzle with a simple structure and no need for external power, which can achieve efficient anti-clogging by using its own blowing airflow.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model discloses a self-cleaning and anti-clogging nozzle for a mineral sorting machine, comprising a nozzle body and an internal airflow channel. The nozzle body is characterized in that a spiral air guide core is provided in the middle section of the airflow channel, and a self-rotating fan blade is rotatably provided at the outlet end of the nozzle body. The spiral air guide core is used to generate centrifugal force for the passing airflow, and the self-rotating fan blade is driven to rotate by the ejected airflow.

[0006] As a preferred embodiment of this invention, the spiral air guide core is connected to the inside of the nozzle body via a connecting rod.

[0007] As a preferred technical solution of this utility model, the outer wall of the spiral air guide core is provided with a spiral groove, which cooperates with the nozzle airflow channel to form a spiral upward flow channel.

[0008] As a preferred embodiment of this invention, the self-rotating fan blade is mounted on the spiral air guide core at the outlet end of the nozzle body via a miniature bearing.

[0009] As a preferred embodiment of this invention, the self-rotating fan blade is mounted on the spiral air guide core at the outlet end of the nozzle body via a miniature bearing.

[0010] As a preferred embodiment of this utility model, the self-rotating fan blade has four blades and a 20° windward tilt angle.

[0011] As a preferred embodiment of this utility model, the gap between the outer edge of the rotating fan blade and the inner wall of the nozzle outlet is 0.1 mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The centrifugal force field generated by the spiral air guide core effectively repels dust from depositing in the internal channels, thus preventing blockage in principle; 2. The structure is compact, requiring no additional power or complex control, and has high reliability, significantly improving the working continuity and stability of the sorting equipment. 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: Figure 1 This is a schematic diagram of the axial half-section structure of this utility model; Figure 2 This is a front view of the self-rotating fan blade of this utility model. In the diagram: 1. Nozzle body; 2. Airflow channel; 3. Spiral air guide core; 4. Self-rotating fan blade; 5. Miniature bearing; 6. Connecting rod; 7. Spiral flow channel; 8. Blade. Detailed Implementation

[0014] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0015] In the attached diagram, all identical reference numerals refer to the same components.

[0016] like Figure 1-2As shown, this utility model provides a self-cleaning anti-clogging nozzle for a mineral sorting machine, including a nozzle body 1 and an internal airflow channel 2. The airflow channel 2 is characterized by having a spiral air guide core 3 in the middle section and a rotatable self-rotating fan blade 4 at the outlet end of the nozzle body 1. The spiral air guide core 3 is used to generate a rotational centrifugal force on the passing airflow, and the self-rotating fan blade 4 is driven to rotate by the ejected airflow.

[0017] The method of using this utility model is as follows: 1. When the high-pressure airflow is turned on, it forms a centrifugal cyclone after flowing through the spiral air guide core 3, thus completing the internal cleaning; 2. Then, the self-rotating fan blade 4 is driven to rotate at high speed to complete the outlet scraping; 3. The final clean, focused airflow is ejected to perform the sorting task. After the blowing stops, the fan blades continue to rotate briefly due to inertia, completing the final cleaning.

[0018] Furthermore, its nozzle body 1 is typically made of wear-resistant stainless steel.

[0019] Furthermore, a brass spiral air guide core 3 is pressed into the middle section of the internal airflow channel 2.

[0020] Furthermore, the outer surface of the spiral air guide core is machined with a double-headed spiral groove, which cooperates with the nozzle airflow channel to form a spiral flow channel 7. When the high-pressure airflow passes through, it is forced to move along the spiral flow channel 7, generating a strong rotational centrifugal force, making it difficult for dust particles to approach and adhere to the pipe wall.

[0021] Furthermore, a self-rotating fan blade 4 made of polyoxymethylene resin is mounted at the nozzle outlet end via a miniature sealed bearing 5.

[0022] Furthermore, the fan blade has four blades with an angle of attack of 20°.

[0023] Furthermore, when the rotating airflow impacts the blades, it generates a tangential force that drives their rotation. The blades rotate at speeds up to several thousand revolutions per minute, with their edges maintaining a 0.1mm gap from the inner wall of the nozzle outlet, thus efficiently removing any sticky substances that may adhere to them.

[0024] This invention relates to a self-cleaning anti-clogging nozzle for a mineral separator. Its advantages include a simple structure and the fact that it requires no external power. The nozzle can achieve efficient anti-clogging by using its own blowing airflow, thus improving the continuity and stability of operation.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A self-cleaning, anti-clogging nozzle for a mineral sorting machine, comprising a nozzle body (1) and an internal airflow channel (2), characterized in that: The airflow channel (2) is provided with a spiral air guide core (3) in the middle section, and the nozzle body (1) is provided with a rotatable self-rotating fan blade (4) at the outlet end; the spiral air guide core (3) causes the airflow to generate a rotational centrifugal force to drive the self-rotating fan blade (4) to rotate.

2. The self-cleaning anti-clogging nozzle of a mineral sorting machine according to claim 1, characterized in that, A connecting rod (6) is provided between the spiral air guide core (3) and the nozzle body (1).

3. The self-cleaning anti-clogging nozzle of a mineral sorting machine according to claim 2, characterized in that, The outer wall of the spiral air guide core (3) is provided with a spiral groove, which cooperates with the nozzle airflow channel to form a spiral upward flow channel (7).

4. The self-cleaning anti-clogging nozzle of a mineral separator according to claim 1, characterized in that, It also includes a micro bearing (5), and the self-rotating fan blade (4) is mounted on the spiral air guide core (3) at the outlet end of the nozzle body (1) via the micro bearing (5).

5. The self-cleaning anti-clogging nozzle of a mineral sorting machine according to claim 4, characterized in that, The blades (8) of the self-rotating fan blade (4) have an angle of inclination towards the wind.

6. The self-cleaning anti-clogging nozzle of a mineral sorting machine according to claim 5, characterized in that, The self-rotating fan blade (4) has 4 blades (8) with an angle of 20°.

7. The self-cleaning anti-clogging nozzle of a mineral sorting machine according to claim 6, characterized in that, The gap between the outer edge of the rotating fan blade (4) and the inner wall of the nozzle outlet is 0.1 mm.

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