A high-purity quartz sand reverse flotation device

Abstract

The utility model discloses a high -purity quartz sand's reverse flotation device relates to flotation technical field, this high -purity quartz sand's reverse flotation device, including tank body, power output mechanism, froth scraping mechanism, ore pulp stirring mechanism and aeration mechanism, the tank body is divided into first chamber and second chamber, and the through connection of middling tank is passed through between two chambers, the power output mechanism includes the double -shaft motor of fixed in tank body upper end one side, and the output of this double -shaft motor rear end is connected through universal shaft and worm, and the distal end of worm is rotatably connected in the fixed block of tank body no. Worm and two turbines are engaged, and each turbine is fixed in the bottom end of transmission rod, and transmission rod is vertically penetrated fixed in the fixed block of tank body no. 2 through bearing, the ore pulp stirring mechanism is arranged in each chamber. The utility model discloses through double -chamber series connection flotation structure and single motor double -shaft collaborative driving optimization quartz sand sorting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of flotation technology, specifically to a reverse flotation device for high-purity quartz sand. Background Technology

[0002] High-purity quartz sand, with a SiO2 content exceeding 99.9%, is an important industrial mineral raw material. Its particle size is generally between 1-0.1 mm. It possesses excellent high-temperature resistance, corrosion resistance, insulation, and light transmittance, and is widely used in high-tech fields such as semiconductors, photovoltaics, optical communications, and electric light sources. Since natural quartz ore often contains feldspar, mica, clay minerals, and impurities such as iron, titanium, and aluminum, purification of the quartz ore is necessary to obtain high-purity quartz sand. Flotation machines play a crucial role in the purification process, utilizing the differences in the physicochemical properties of mineral surfaces, particularly their hydrophobicity, to separate the minerals. Because quartz and impurity minerals have different surface properties, by adding appropriate flotation reagents, the impurity minerals become hydrophobic and adhere to air bubbles, rising to the surface of the slurry to form a foam layer that is scraped off, while the quartz remains in the slurry, thus achieving the separation of quartz from impurities. Flotation machines can effectively remove associated minerals such as feldspar and mica, as well as metallic impurities such as iron and aluminum, from quartz sand, thereby improving the purity of quartz sand and meeting the quality requirements of high-purity quartz sand in different high-end fields. Therefore, flotation machines are usually used in the production of high-purity quartz sand.

[0003] Existing high-purity quartz sand reverse flotation devices have significant drawbacks in terms of power drive, mostly employing multiple motors to drive different components for flotation operations. This multi-motor drive mode not only complicates the equipment structure and increases purchase and maintenance costs, but also consumes a large amount of electrical energy during operation, resulting in persistently high overall energy consumption. This not only increases the production cost burden on enterprises but also contradicts the current trend of energy conservation and environmental protection. Given the increasingly tight energy supply, this high-energy-consuming reverse flotation device urgently needs improvement. Utility Model Content

[0004] This invention provides a reverse flotation device for high-purity quartz sand, which has the advantages of energy saving and environmental protection, thus solving the problem of high energy consumption in existing technologies.

[0005] To achieve energy conservation and environmental protection, this utility model provides the following technical solution: a reverse flotation device for high-purity quartz sand, comprising a tank, a power output mechanism, a foam scraping mechanism, a slurry mixing mechanism, and an aeration mechanism. The tank is divided into a first chamber and a second chamber, which are connected by a ore box. The power output mechanism includes a dual-axis motor fixed to one side of the upper end of the tank. The output end of the dual-axis motor is connected to a worm gear through a universal joint. The far end of the worm gear is rotatably connected to the first fixed block of the tank. The worm gear meshes with two turbines. Each turbine is fixed to the bottom end of the transmission rod. The transmission rod is vertically fixed to the second fixed block of the tank through a bearing. The slurry mixing mechanism is installed in each chamber, including a mixing impeller at the bottom of the chamber, a first pulley connected to the upper part of the mixing impeller, and a first pipe and a second pipe installed at the lower part of the mixing impeller, wherein the first pipe extends through the side wall of the tank to the outside, and the second pipe is connected to the middlings box. The foam scraping mechanism includes a stirring shaft rotatably mounted on the side wall of the tank, a stirring scraper fixed to the stirring shaft, and a reducer connected to the front output end of a dual-shaft motor. A second pulley is installed at the output end of the reducer, and a third pulley is installed at the end of the stirring shaft. The second pulley and the third pulley are connected by belt drive.

[0006] Furthermore, the air-filling mechanism is connected to an external slurry mixing mechanism via a pipe.

[0007] Furthermore, a fourth pulley is installed at the upper end of the transmission rod, and the fourth pulley is connected to the first pulley of the corresponding slurry mixing mechanism via a belt.

[0008] Furthermore, the intermediate ore box is surrounded by vertical partitions, the width of which accounts for 15% to 30% of the width of the chamber.

[0009] Furthermore, the diameter of the third pulley is 1.8 to 2.2 times that of the second pulley.

[0010] Furthermore, the worm gear has a double-threaded design, with 18 to 22 teeth and a module of 4.

[0011] Furthermore, the bottoms of the first and second fixing blocks are welded to the groove, and the tops are provided with right-angle reinforcing ribs.

[0012] Compared with the prior art, this utility model provides a reverse flotation device for high-purity quartz sand, which has the following beneficial effects: This reverse flotation device for high-purity quartz sand firstly utilizes a dual-chamber structure within the tank, directionally connected via a middlings tank, to achieve two-stage deep flotation of the slurry. After the first chamber removes coarse impurities, the slurry enters the second chamber for deep purification. Combined with the coordinated diversion of the discharge pipe at the bottom of the agitator and the middlings return pipe, this effectively eliminates the problem of foam inclusions and gangue, thus improving the purity of the quartz sand. Secondly, the integrated dual-shaft motor drives the agitator and skimmer structure. The rear output drives the impellers of both chambers synchronously via a universal shaft-driven worm gear turbine assembly, while the front output drives the scraper shaft through a reducer and pulley assembly. This not only significantly reduces energy consumption but also avoids coordination errors from multiple motors, ultimately achieving the dual advantages of high recovery rate and low energy consumption and high grade. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the present utility model; Figure 2 This is a rear view schematic diagram of the present invention; Figure 3 This is a schematic diagram of the power output mechanism of this utility model; Figure 4 This is a schematic diagram of the slurry mixing mechanism and the air filling mechanism of this utility model; Figure 5 This is a schematic diagram of the foam scraping mechanism of this utility model; Figure 6 This is a right-side view of the tank body of this utility model; Figure 7 This is a schematic diagram of the left side of this utility model.

[0014] In the diagram: 1. Tank; 2. Power output mechanism; 21. Worm gear; 22. Fixed block No. 1; 23. Fixed block No. 2; 24. Turbine; 25. Transmission rod; 26. Universal joint; 27. Reducer; 28. Dual-shaft motor; 3. Foam scraping mechanism; 4. Slurry mixing mechanism; 5. Air inflation mechanism. Detailed Implementation

[0015] 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.

[0016] Please see Figures 1-7This utility model discloses a reverse flotation device for high-purity quartz sand, including a tank body 1, a power output mechanism 2, a foam scraping mechanism 3, a slurry stirring mechanism 4, and an aeration mechanism 5. The tank body 1 is divided into a first chamber and a second chamber, which are connected by a middle ore box. The power output mechanism 2 includes a dual-shaft motor 28 fixed to one side of the upper end of the tank body 1. The output end of the dual-shaft motor 28 is connected to a worm gear 21 through a universal joint 26. The far end of the worm gear 21 is rotatably connected to a first fixed block 22 of the tank body 1. The worm gear 21 meshes with two turbines 24. Each turbine 24 is fixed to the bottom end of a transmission rod 25. The transmission rod 25 is vertically fixed to a second fixed block 23 of the tank body 1 through a bearing.

[0017] The reverse flotation device for high-purity quartz sand in this technology is mainly composed of a tank body 1, a power output mechanism 2, a foam scraping mechanism 3, a slurry mixing mechanism 4, and an aeration mechanism 5. Its core technology is to achieve energy-saving and environmentally friendly power transmission through the designed power output mechanism 2.

[0018] The core structure's power output mechanism 2 mainly includes a dual-axis motor 28 mounted on one side of the upper end of the tank 1. The output end of the dual-axis motor 28 is connected to a worm gear 21 via a universal joint 26. The other end of the worm gear 21 is rotatably connected to a first fixing block 22, the front end of which is fixed to the tank 1. The power output mechanism 2 also includes two second fixing blocks 23 fixed to the tank 1. Each of the two second fixing blocks 23 has a transmission rod 25 rotatably mounted inside via bearings. The lower end of the transmission rod 25 meshes with the worm gear 21 via a worm gear 24.

[0019] The slurry mixing mechanism 4 is installed in each chamber, including a mixing impeller located at the bottom of the chamber, a first pulley connected to the upper part of the mixing impeller, and a first pipe and a second pipe installed at the lower part of the mixing impeller. The first pipe extends through the side wall of the tank 1 to the outside, and the second pipe is connected to the middlings box. The foam scraping mechanism 3 includes a stirring shaft rotatably mounted on the side wall of the tank 1, a stirring scraper fixed to the stirring shaft, and a reducer 27 connected to the front output end of the dual-shaft motor 28. A second pulley is installed at the output end of the reducer 27, and a third pulley is installed at the end of the stirring shaft. The second pulley and the third pulley are connected by belt drive.

[0020] The tank 1 is divided into two chambers. Each chamber is equipped with a middlings box and a slurry mixing mechanism 4. The middlings box is used to connect the two chambers. The mixing impeller at the bottom of the slurry mixing mechanism 4 is located at the bottom of the chamber. Two pipes are also installed at the bottom. One pipe runs through the tank 1 to the outside of the tank 1, and the other pipe is connected to the middlings box. The upper part of the slurry mixing mechanism 4 is fixed to the upper end of the tank 1. The slurry mixing mechanism 4 is connected to an air inflation mechanism 5 through a pipe. The upper part of the mixing impeller is connected to a pulley through a coupling shaft, and is connected to the upper part of the transmission rod 25 in conjunction with a belt and another pulley.

[0021] The air-filling mechanism 5 is connected to the slurry mixing mechanism 4 via a pipe. A fourth pulley is installed at the upper end of the transmission rod 25, which is connected to the first pulley of the corresponding slurry mixing mechanism 4 via a belt. The intermediate ore box is surrounded by vertical partitions, and its width accounts for 15% to 30% of the chamber width. The diameter of the third pulley is 1.8 to 2.2 times that of the second pulley. The worm gear 21 has a double-threaded design, and the worm wheel 24 has 18 to 22 teeth with a module of 4. The bottoms of the first fixing block 22 and the second fixing block 23 are welded to the tank body 1, and the tops are provided with right-angle reinforcing ribs.

[0022] The foam scraping mechanism 3 includes a stirring shaft and a stirring scraper fixed to the stirring shaft. One end of the stirring shaft is rotatably connected to the side of the tank 1. The output end of the front end of the dual-shaft motor 28 is connected to the reducer 27. The other output end of the reducer 27 is connected to the stirring shaft through two pulleys and a belt to realize power transmission.

[0023] The specific working principle is as follows: The dual-shaft motor 28 is started. The output end of the dual-shaft motor 28 is connected to the worm gear 21 through the universal joint 26. The worm gear 21 is connected to the turbine 24 to drive the transmission rod 25. The rotation of the transmission rod 25, together with the pulley and belt, drives the upper end of the stirring impeller of the slurry stirring mechanism 4 to rotate, thereby realizing the rotation of the stirring impeller. The output end of the dual-shaft motor 28 is connected to the reducer 27 and, together with the pulley and belt, drives the stirring shaft of the foam scraping mechanism 3 to rotate, thereby realizing the foam scraping.

[0024] The advantages of this technology lie in its significantly improved quartz sand separation efficiency and reduced energy consumption through a dual-chamber series structure and a single-motor dual-shaft coordinated drive design. Specifically: First, the dual-chamber layout within tank 1, connected by a middlings box, allows the slurry to undergo two independent flotation processes. After the first chamber removes coarse impurities, the slurry undergoes secondary blending in the middlings box before entering the second chamber for further impurity removal. Combined with the directional diversion of coarse slag discharge through the first pipe and the return flow to the middlings box through the second pipe at the bottom of the slurry stirring mechanism 4, the problem of unstable concentrate grade caused by fine gangue mixed with foam during primary flotation is solved. Second, the dual-shaft motor 28 synchronously drives the two structures, with its rear end... The output shaft drives the two-chamber stirring impeller via a transmission chain consisting of universal joint 26, worm gear 21, turbine 24, transmission rod 25, fourth pulley, and first pulley. The front-end output shaft drives the scraper on the stirring shaft via reducer 27, second pulley, belt, and third pulley. A single motor replaces the traditional dual-motor configuration, reducing energy consumption. The right-angle transmission of worm gear 21 and turbine 24 ensures stable transmission of stirring torque. In addition, the air output of the air supply pipe of the aeration mechanism 5 allows the bubbles to fully contact the mineral particles after being sheared and dispersed by the impeller, improving the utilization rate of flotation reagents. Ultimately, this achieves a high flotation recovery rate while reducing energy consumption per unit processing volume.

[0025] It should be noted that, in this document, terms such as "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 a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] 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 reverse flotation device for high-purity quartz sand, comprising a tank (1), a power output mechanism (2), a foam scraping mechanism (3), a slurry stirring mechanism (4), and an aeration mechanism (5), characterized in that: The tank (1) is divided into a first chamber and a second chamber, which are connected by a ore box. The power output mechanism (2) includes a dual-axis motor (28) fixed to one side of the upper end of the tank (1). The output end of the dual-axis motor (28) is connected to a worm (21) through a universal joint (26). The far end of the worm (21) is rotatably connected to the first fixed block (22) of the tank (1). The worm (21) meshes with two turbines (24). Each turbine (24) is fixed to the bottom end of the transmission rod (25). The transmission rod (25) is vertically fixed to the second fixed block (23) of the tank (1) through a bearing. The slurry mixing mechanism (4) is installed in each chamber, including a mixing impeller at the bottom of the chamber, a first belt pulley connected to the upper part of the mixing impeller, and a first pipe and a second pipe installed at the lower part of the mixing impeller, wherein the first pipe extends through the side wall of the tank (1) to the outside, and the second pipe is connected to the ore box; The foam scraping mechanism (3) includes a stirring shaft rotatably mounted on the side wall of the tank (1), a stirring scraper fixed to the stirring shaft, and a reducer (27) connected to the output end of the dual-shaft motor (28). The output end of the reducer (27) is equipped with a second pulley, and the end of the stirring shaft is equipped with a third pulley. The second pulley and the third pulley are connected by belt drive.

2. The reverse flotation device for high-purity quartz sand according to claim 1, characterized in that: The air-filling mechanism (5) is connected to the slurry mixing mechanism (4) via a pipe.

3. The reverse flotation device for high-purity quartz sand according to claim 1, characterized in that: The upper end of the transmission rod (25) is equipped with a fourth pulley, which is connected to the first pulley of the corresponding slurry mixing mechanism (4) via a belt.

4. The reverse flotation device for high-purity quartz sand according to claim 1, characterized in that: The intermediate ore box is surrounded by vertical partitions, the width of which accounts for 15% to 30% of the width of the chamber.

5. The reverse flotation device for high-purity quartz sand according to claim 1, characterized in that: The diameter of the third pulley is 1.8 to 2.2 times that of the second pulley.

6. The reverse flotation device for high-purity quartz sand according to claim 1, characterized in that: The worm (21) has a double-threaded design, and the turbine (24) has 18 to 22 teeth and a module of 4.

7. The reverse flotation device for high-purity quartz sand according to claim 1, characterized in that: The bottom of the first fixing block (22) and the second fixing block (23) are welded to the groove (1), and the top is provided with a right-angle reinforcing rib.

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