A skimmer for a mining flotation machine

Abstract

This utility model discloses a skimmer for a flotation machine used in mining, including a flotation cell. A skimming mechanism for skimming bubbles is provided on one side of the upper end of the flotation cell. The skimming mechanism includes a drive shaft, telescopic rods, a scraper, a threaded sleeve, a rotating ring, and the drive shaft. The drive shaft is movably mounted on one side of the upper end of the flotation cell via a bearing. Several telescopic rods are fixedly mounted on the outer surface of the drive shaft. A scraper is fixedly mounted on the movable end of each telescopic rod. A threaded sleeve is screwed onto the surface of the drive shaft via a thread. This utility model has good performance and allows for dynamic adjustment of the scraping depth of the scraper. The adjustable skimming depth of the skimming device can meet the needs of different flotation stages such as roughing, cleaning, and scavenging. In the roughing stage, the skimming depth can be appropriately increased to recover as much of the target mineral as possible; in the cleaning stage, the skimming depth needs to be decreased to improve the concentrate grade.

Description

Technical Field

[0001] This utility model relates to the field of flotation machine technology, specifically to a skimmer for a flotation machine used in mining. Background Technology

[0002] A flotation machine is a crucial piece of equipment used for mineral separation in the mineral processing industry. Its working principle is based on the differences in the physicochemical properties of mineral particle surfaces. By adding flotation reagents to the slurry, the target minerals selectively adhere to air bubbles, thus separating them from gangue minerals. A flotation machine mainly consists of a tank, a stirring device, an aeration device, and a froth scraper. During flotation, the slurry is fed into the tank from one end. The stirring device keeps the slurry in suspension while promoting thorough mixing of the reagents and mineral particles. The aeration device blows air into the slurry, generating a large number of bubbles. As the bubbles rise, hydrophilic gangue minerals are less likely to adhere to the bubbles and remain in the slurry, while hydrophobic target minerals adhere to the bubble surface and float to the surface of the slurry, forming a mineralized froth layer. The froth scraper removes this mineralized froth layer, yielding the concentrate product. The slurry not carried away by the bubbles is discharged as tailings.

[0003] The drawback of existing flotation machines of this type is that the frothing depth of the frothing device cannot be quickly adjusted as needed. Appropriately increasing the frothing depth can scrape off more bubbles with the target mineral attached, avoiding the situation where some mineralized bubbles are not scraped off in time and return to the slurry due to insufficient frothing depth, thereby improving the recovery rate of the target mineral. Therefore, an improved frothing device for mining flotation machines is needed to address this problem. Utility Model Content

[0004] The purpose of this invention is to provide a skimmer for a flotation machine used in mining, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a skimmer for a flotation machine used in mining, comprising a flotation cell, a skimming mechanism for skimming bubbles is provided on one side of the upper end of the flotation cell, the skimming mechanism comprising a drive shaft, a telescopic rod, a scraper, a threaded sleeve, a rotating ring, and a drive rod. The drive shaft is movably mounted on one side of the upper end of the flotation cell via a bearing, a plurality of telescopic rods are fixedly mounted on the outer surface of the drive shaft, a scraper is fixedly mounted on the movable end of the telescopic rod, a threaded sleeve is movably screwed onto the surface of the drive shaft, a rotating ring is mounted on the outer surface of the threaded sleeve, and a drive rod is movably mounted on the surface of the rotating ring via a rotating shaft. The end of the drive rod near the scraper is movably connected to the scraper via the rotating shaft, and a drive mechanism for driving the drive shaft to rotate is provided on one side of the drive shaft at the upper end of the flotation cell.

[0006] Preferably, the surface of the threaded sleeve is connected to the rotating ring via a bearing, so that the rotating ring can rotate relative to the threaded sleeve but cannot translate relative to the threaded sleeve. In this way, when the rotation of the threaded sleeve drives the threaded sleeve to translate left and right under the action of the thread, the rotating ring can also translate left and right together.

[0007] Preferably, the driving mechanism includes a motor, a reducer, a first pulley, a second pulley, and a transmission belt. The motor is fixedly installed on one side of the upper end of the flotation cell, the reducer is fixedly installed on one side of the motor at the upper end of the flotation cell, the first pulley is fixedly installed on one side of the reducer, the second pulley is fixedly installed at one end of the transmission shaft, and a transmission belt is sleeved between the first pulley and the second pulley. The driving mechanism can drive the transmission shaft and the scraper to rotate slowly.

[0008] Preferably, the power output shaft of the electric motor is connected to the first pulley via a reducer.

[0009] Preferably, the surface of the flotation cell is provided with a connecting pipe, through which the slurry to be flotated can be pumped into the flotation cell.

[0010] Preferably, the flotation tank is equipped with a stirrer, which can be used to stir the water before flotation.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model can dynamically adjust the scraping depth of the scraper. The scraping depth adjustable scraping device can meet the needs of different flotation stages such as roughing, cleaning and scavenging. In the roughing stage, in order to recover as much target mineral as possible, the scraping depth can be appropriately increased, thereby improving the scraping effect of this device.

[0013] 2. This utility model is easy to operate during adjustment. Simply rotate the threaded sleeve to make the threaded sleeve drive the rotating ring to move left and right along the rotating axis. At this time, the transmission rod can drive the scrapers to move closer or further apart, so as to adjust the depth of the scraper into the slurry each time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the skimmer for a flotation machine used in mining according to the present invention;

[0015] Figure 2 This is a top view of a skimmer for a flotation machine used in mining according to this utility model;

[0016] Figure 3 This is an overall structural view of the foam scraping mechanism in the foam scraper of a flotation machine for mining according to this utility model.

[0017] In the diagram: 1. Flotation cell; 2. Drive shaft; 3. Telescopic rod; 4. Scraper; 5. Threaded sleeve; 6. Rotating ring; 7. Drive rod; 8. Motor; 9. Reducer; 10. First pulley; 11. Second pulley; 12. Drive belt; 13. Connecting pipe; 14. Agitator. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a skimmer for a flotation machine used in mining, comprising a flotation cell 1, a skimming mechanism for skimming bubbles is provided on one side of the upper end of the flotation cell 1, the skimming mechanism comprising a drive shaft 2, a telescopic rod 3, a scraper 4, a threaded sleeve 5, a rotating ring 6, and a drive rod 7. The drive shaft 2 is movably mounted on one side of the upper end of the flotation cell 1 via a bearing, a plurality of telescopic rods 3 are fixedly mounted on the outer surface of the drive shaft 2, a scraper 4 is fixedly mounted on the movable end of the telescopic rod 3, a threaded sleeve 5 is movably screwed onto the surface of the drive shaft 2, a rotating ring 6 is mounted on the outer surface of the threaded sleeve 5, and a drive rod 7 is movably mounted on the surface of the rotating ring 6 via a rotating shaft, the end of the drive rod 7 near the scraper 4 is movably connected to the scraper 4 via the rotating shaft, and a drive mechanism for driving the drive shaft 2 to rotate is provided on one side of the upper end of the flotation cell 1.

[0020] The surface of the threaded sleeve 5 is connected to the rotating ring 6 through a bearing, so that the rotating ring 6 can rotate relative to the threaded sleeve 5, but cannot translate relative to the threaded sleeve 5. In this way, when the threaded sleeve 5 rotates and is driven to translate left and right under the action of the thread, the rotating ring 6 can be driven to translate left and right together.

[0021] The driving mechanism includes a motor 8, a reducer 9, a first pulley 10, a second pulley 11, and a transmission belt 12. The motor 8 is fixedly installed on one side of the upper end of the flotation cell 1. The reducer 9 is fixedly installed on one side of the motor 8 at the upper end of the flotation cell 1. The first pulley 10 is fixedly installed on one side of the reducer 9. The second pulley 11 is fixedly installed at one end of the transmission shaft 2. The transmission belt 12 is sleeved between the first pulley 10 and the second pulley 11. The driving mechanism can drive the transmission shaft 2 and the scraper 4 to rotate slowly.

[0022] The power output shaft of the electric motor 8 is connected to the first pulley 10 via a reducer 9.

[0023] The surface of the flotation cell 1 is provided with a connecting pipe 13, through which the slurry to be flotated can be pumped into the flotation cell 1.

[0024] The flotation tank 1 is equipped with a stirrer 14, which can be used to stir the water before flotation.

[0025] Working principle: When this device is used, it can drive the transmission shaft 2 to rotate via the motor 8 and reducer 9 to rotate the scraper 4 for flotation and flotation. The scraping depth of the scraper 4 can be adjusted as needed. The adjustment is easy to operate. Simply rotate the threaded sleeve 5 so that the threaded sleeve 5 drives the rotating ring 6 to move left and right along the rotating shaft. At this time, the transmission rod 7 can drive the scraper 4 to move closer or further apart, so as to adjust the depth of the scraper 4 into the slurry each time.

[0026] This device allows for dynamic adjustment of the scraping depth of scraper 4. The adjustable scraping depth of the froth removal device can meet the needs of different flotation stages, such as roughing, cleaning, and scavenging. In the roughing stage, the scraping depth can be appropriately increased to recover as much of the target mineral as possible. In the cleaning stage, the scraping depth needs to be reduced to improve the concentrate grade. For example, in the copper-molybdenum separation flotation process, when roughing a mixed copper-molybdenum concentrate, adjusting the scraping depth achieves efficient recovery of copper and molybdenum minerals. When cleaning copper and molybdenum concentrates, the scraping depth is adjusted again to improve the grades of the copper and molybdenum concentrates respectively. For example, in the copper ore flotation process, adjusting the scraping depth allows scraper 4 to primarily scrape the upper layer of foam rich in copper minerals, significantly improving the grade of the copper concentrate. For example, in the flotation of fine-grained disseminated lead-zinc ore, adjusting the scraping depth ensures that bubbles with fine-grained lead-zinc minerals attached to the bottom layer can also be effectively scraped, helping to improve the recovery rate of lead and zinc metals.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A skimmer for a flotation machine used in mining, comprising a flotation cell (1), characterized in that: A frothing mechanism for frothing is provided on one side of the upper end of the flotation cell (1). The frothing mechanism includes a drive shaft (2), a telescopic rod (3), a scraper (4), a threaded sleeve (5), a rotating ring (6), and a drive rod (7). The drive shaft (2) is movably provided on one side of the upper end of the flotation cell (1) via a bearing. Several telescopic rods (3) are fixedly provided on the outer surface of the drive shaft (2). A scraper (4) is fixedly provided on the movable end of the telescopic rod (3). A threaded sleeve (5) is movably screwed onto the surface of the drive shaft (2). A rotating ring (6) is provided on the outer surface of the threaded sleeve (5). A drive rod (7) is movably provided on the surface of the rotating ring (6) via a rotating shaft. The end of the drive rod (7) near the scraper (4) is movably connected to the scraper (4) via a rotating shaft. A drive mechanism for driving the drive shaft (2) to rotate is provided on one side of the drive shaft (2) at the upper end of the flotation cell (1).

2. The skimmer for a flotation machine used in mining according to claim 1, characterized in that: The surface of the threaded sleeve (5) is connected to the rotating ring (6) by a bearing, so that the rotating ring (6) can rotate relative to the threaded sleeve (5), but cannot translate relative to the threaded sleeve (5).

3. The skimmer for a flotation machine used in mining according to claim 1, characterized in that: The driving mechanism includes a motor (8), a reducer (9), a first pulley (10), a second pulley (11), and a transmission belt (12). The motor (8) is fixedly installed on one side of the upper end of the flotation cell (1). The reducer (9) is fixedly installed on one side of the motor (8) at the upper end of the flotation cell (1). The first pulley (10) is fixedly installed on one side of the reducer (9). The second pulley (11) is fixedly installed at one end of the transmission shaft (2). The transmission belt (12) is sleeved between the first pulley (10) and the second pulley (11).

4. The skimmer for a flotation machine used in mining according to claim 3, characterized in that: The power output shaft of the electric motor (8) is connected to the first pulley (10) via a reducer (9).

5. The skimmer for a flotation machine used in mining according to claim 1, characterized in that: The surface of the flotation cell (1) is provided with a connecting pipe (13).

6. The skimmer for a flotation machine used in mining according to claim 1, characterized in that: The flotation tank (1) is equipped with a stirrer (14).

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