Anti-sticking type floating scraper self-cleaning mechanism

Abstract

The utility model discloses a prevent material type floatation scraper self -cleaning mechanism, including hollow rotating column, the surface welding of hollow rotating column has hollow connecting rod, and another end of hollow connecting rod is installed with the scraper, the surface of scraper is fixed with the support plate, and is installed with the cleaning spray head on the support plate, the inside of hollow connecting rod, support plate and hollow rotating column all are provided the chamber of intercommunication, and one end of hollow rotating column is connected through high -speed rotating joint the air outlet of air compressor.0.5-1.0MPa gas source pressure is used in the utility model, and airflow velocity can reach 50-100m / s, and the impact force is 2-3 times of traditional low pressure water, can effectively break the adhesion of mineral slurry and reagent residue, especially the cleaning rate of the sticky film formed by oil collector is greatly improved. The serrated scraper edge cooperates with the airflow cutting effect in the utility model, can destroy the sticky structure of foam layer synchronously, reduces the subsequent cleaning load.

Description

Technical Field

[0001] This utility model relates to the field of mineral processing equipment technology, and in particular to a self-cleaning mechanism for anti-sticking flotation scrapers. Background Technology

[0002] In mineral flotation processes, the scraper is the core component for removing the froth layer. However, traditional flotation scrapers generally face the following technical challenges during operation:

[0003] Muddy minerals, such as oxide minerals, clay minerals, or slurries with added oil collectors, tend to adhere to the scraper surface, forming stubborn deposits. In existing technologies, some patents use low-pressure water flushing or mechanical scraping for cleaning, but the cleaning effect is limited for highly viscous deposits, such as oily mud mixed particles, requiring frequent manual intervention, increasing downtime and labor costs.

[0004] To address these shortcomings, we proposed a self-cleaning mechanism for anti-fouling flotation scrapers. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a self-cleaning mechanism for anti-fouling flotation scrapers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a self-cleaning mechanism for anti-fouling flotation scrapers, comprising a hollow rotating column, a hollow connecting rod welded to the surface of the hollow rotating column, and a scraper installed at the other end of the hollow connecting rod, a support plate fixed to the surface of the scraper, and a cleaning nozzle installed on the support plate, wherein the hollow connecting rod, the support plate and the hollow rotating column are all provided with interconnected chambers, and one end of the hollow rotating column is connected to the air outlet of an air compressor through a high-speed rotary joint.

[0007] Preferably, the other end of the hollow rotating column is connected to the output end of the drive motor.

[0008] Preferably, the scraper is provided in multiple manner, and the multiple scrapers are arranged in a ring array on the outer wall of the hollow rotating column.

[0009] Preferably, one end of the scraper is serrated.

[0010] Preferably, the air compressor is electrically connected to an external power source via a wire.

[0011] Preferably, the scraper is arranged parallel to the hollow rotating column.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention uses a gas source pressure of 0.5-1.0 MPa, and the airflow speed can reach 50-100 m / s. The impact force is 2-3 times that of traditional low-pressure water jetting, which can effectively break the adhesion of mineral mud and reagent residues, and especially significantly improves the removal rate of sticky films formed by oil collectors.

[0014] In this invention, the serrated scraper edge, combined with the airflow cutting action, can simultaneously destroy the adhesive structure of the foam layer, reducing the subsequent cleaning load. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the anti-sticking type flotation scraper self-cleaning mechanism proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the external structure of the anti-sticking type flotation scraper self-cleaning mechanism proposed in this utility model;

[0018] Figure 3 This is a side view of the anti-sticking flotation scraper self-cleaning mechanism proposed in this utility model;

[0019] Figure 4 for Figure 1 An enlarged diagram of A in the diagram.

[0020] Legend:

[0021] 1. Hollow rotating column; 2. Hollow connecting rod; 3. Scraper; 4. Support plate; 5. Cleaning nozzle; 6. Chamber; 7. High-speed rotary joint; 8. Drive motor; 9. Air compressor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] Please refer to Figure 1-4 The anti-fouling type flotation scraper self-cleaning mechanism includes a hollow rotating column 1, a hollow connecting rod 2 welded to the surface of the hollow rotating column 1, and a scraper 3 installed at the other end of the hollow connecting rod 2. A support plate 4 is fixed to the surface of the scraper 3, and a cleaning nozzle 5 is installed on the support plate 4. The hollow connecting rod 2, the support plate 4, and the hollow rotating column 1 are all provided with interconnected chambers 6. One end of the hollow rotating column 1 is connected to the air outlet of an air compressor 9 through a high-speed rotary joint 7. This device is installed on... Above the flotation cell, the hollow rotating column 1 is perpendicular to the flotation cell liquid surface. The lower end of the scraper 3 extends into the froth layer about 20-50mm. After the drive motor 8 is powered on, it drives the hollow rotating column 1 and the annular array of scrapers 3 to rotate synchronously. The serrated edge of the scraper 3 cuts into the froth layer, using centrifugal force and mechanical force to scrape the froth to the discharge port of the flotation cell. During this process, some sludge and reagent residues may adhere to the surface of the scraper 3. When the air compressor 9 is started, the compressed air pressure is 0.5-1.0. MPa of air enters the cavity 6 inside the hollow rotating column 1 through the high-speed rotary joint 7, and is transmitted to the cleaning nozzle 5 through the internal channels of the hollow connecting rod 2 and the support plate 4. The cleaning nozzle 5 sprays high-pressure airflow at a 45° angle onto the surface of the scraper 3, with an airflow velocity of 50-100 m / s. The impact force acts on the adhering material, causing it to separate from the scraper 3. The high-speed rotary joint 7 ensures the airtightness between the fixed air source and the rotating parts when the hollow rotating column 1 rotates, avoiding airflow leakage. Multiple scrapers 3 work together, and the ring-shaped scrapers 3 pass through the cleaning area in sequence. Each group of scrapers 3 triggers airflow cleaning once every one rotation, realizing the periodic automatic cycle of "scraping and cleaning". The sludge and reagent residues washed off by the airflow fall into the surface of the flotation cell with the airflow and re-participate in the flotation process through the flow of slurry, avoiding material waste and equipment contamination.

[0025] In this implementation scheme: the other end of the hollow rotating column 1 is connected to the output end of the drive motor 8.

[0026] Specifically, the drive motor 8 is fixedly connected to the hollow rotating column 1 via a coupling. The rotating shaft of the drive motor drives the hollow rotating column 1 to rotate clockwise or counterclockwise around the axis. The rotation speed is adjusted by a frequency converter, ranging from 5 to 20 r / min, to adapt to the foam scraping frequency requirements under different slurry viscosities.

[0027] In this embodiment, multiple scrapers 3 are provided, and the multiple scrapers 3 are arranged in a ring array on the outer wall of the hollow rotating column 1.

[0028] Specifically, there are 4-8 scrapers 3, which are evenly distributed around the hollow rotating column 1. The included angle between adjacent scrapers 3 is 45°-90°. This structure can increase the area of ​​froth removal per unit time and improve the flotation efficiency. At the same time, the cleaning load of a single scraper 3 is dispersed by the alternating operation of multiple sets of scrapers 3.

[0029] In this implementation scheme: one end of the scraper 3 is serrated.

[0030] Specifically, the tooth height of the serrated edge is 5-10 mm, the tooth pitch is 15-25 mm, and it has an equilateral triangle or trapezoidal structure. The tip of the serration faces the direction of movement of the scraper 3. When scraping the foam layer, the mechanical cutting action destroys the foam adhesive structure and reduces the initial adhesion of the slurry on the surface of the scraper 3.

[0031] In this implementation scheme: the air compressor 9 is electrically connected to an external power source via a wire.

[0032] Specifically, the power interface of the air compressor 9 is connected to the field distribution box via a waterproof cable. The circuit is equipped with an overload protection switch and a pressure relay. When the air pressure is lower than 0.5 MPa, the relay automatically cuts off the power supply to prevent the compressor from being damaged due to excessive load.

[0033] In this implementation scheme: the scraper 3 is arranged parallel to the hollow rotating column 1.

[0034] Specifically, the length direction of the scraper 3 is parallel to the axis of the hollow rotating column 1, and the distance between the two is 10-20 cm. This ensures that during the rotation of the scraper 3, its scraping surface remains perpendicular to the surface of the flotation tank or tilted at a small angle ≤15°, so as to optimize the scraping efficiency and the airflow cleaning coverage.

[0035] Working Principle: During use, the device is installed above the flotation cell, with the hollow rotating column 1 perpendicular to the flotation cell surface. The lower end of the scraper 3 extends approximately 20-50 mm into the foam layer. After the drive motor 8 is powered on, it drives the hollow rotating column 1 and the annular array of scrapers 3 to rotate synchronously. The serrated edges of the scraper 3 cut into the foam layer, using centrifugal force and mechanical force to scrape the foam to the discharge port of the flotation cell. During this process, some sludge and reagent residues may adhere to the surface of the scraper 3. When the air compressor 9 starts, compressed air at a pressure of 0.5-1.0 MPa enters the chamber 6 inside the hollow rotating column 1 through the high-speed rotary joint 7, and is transmitted to the cleaning nozzle 5 through the internal channels of the hollow connecting rod 2 and the support plate 4. The cleaning nozzle 5 sprays high-pressure airflow at a 45° angle onto the surface of the scraper 3, with an airflow velocity of 50-100 km / h. The impact force of m / s acts on the adhering material, causing it to separate from the scraper 3. The high-speed rotary joint 7 ensures the airtightness between the fixed air source and the rotating parts when the hollow rotating column 1 rotates, preventing air leakage. Multiple scrapers 3 work together, and the ring-shaped scrapers 3 pass through the cleaning area in sequence. Each set of scrapers 3 triggers airflow cleaning once every one rotation, realizing the periodic automatic cycle of "scraping bubbles - cleaning". The sludge and reagent residues washed off by the airflow fall into the surface of the flotation cell with the airflow and re-participate in the flotation process through the flow of slurry, avoiding material waste and equipment contamination.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A self-cleaning mechanism for anti-fouling flotation scrapers, comprising a hollow rotating column (1), characterized in that, The hollow rotating column (1) is welded with a hollow connecting rod (2), and a scraper (3) is installed at the other end of the hollow connecting rod (2). A support plate (4) is fixed to the surface of the scraper (3), and a cleaning nozzle (5) is installed on the support plate (4). The hollow connecting rod (2), the support plate (4) and the hollow rotating column (1) are all provided with interconnected chambers (6). One end of the hollow rotating column (1) is connected to the air outlet of the air compressor (9) through a high-speed rotary joint (7).

2. The anti-fouling type flotation scraper self-cleaning mechanism according to claim 1, characterized in that, The other end of the hollow rotating column (1) is connected to the output end of the drive motor (8).

3. The anti-fouling type flotation scraper self-cleaning mechanism according to claim 1, characterized in that, The scraper (3) is provided in multiple ways, and the multiple scrapers (3) are arranged in a ring array on the outer wall of the hollow rotating column (1).

4. The anti-fouling type flotation scraper self-cleaning mechanism according to claim 1, characterized in that, One end of the scraper (3) is serrated.

5. The anti-fouling type flotation scraper self-cleaning mechanism according to claim 1, characterized in that, The air compressor (9) is electrically connected to an external power source via a wire.

6. The anti-fouling type flotation scraper self-cleaning mechanism according to claim 1, characterized in that, The scraper (3) is arranged in parallel with the hollow rotating column (1).

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