Self-suction flotation machine

Abstract

The utility model discloses a self-suction flotation machine, which relates to the technical field of preparation equipment and comprises a flotation tank, a central cylinder and a foam scraping device, the foam scraping device comprises a first transmission roller, a second transmission roller and a foam conveying belt, and the outer wall of the foam conveying belt is fixedly connected with a circulating scraper for scraping foam. By means of the first transmission roller, the second transmission roller, the foam conveying belt and the circulating scraping plate in the foam scraping device, the foam scraping device can cover most of the area of the ore pulp liquid level in the flotation tank, meanwhile, foam in the covered area can be rapidly and evenly scraped out, the foam scraping efficiency is improved, and the flotation efficiency is improved. And meanwhile, the foam scraping device is simple in structure and convenient to maintain, and foam scraped by the foam scraping device can be separated from ore pulp carried by the foam under the guide descending of a separation floating block by utilizing the matched use of the separation floating block, a guide lapping plate, a guide pipe, a limiting spring, a pull wire, a screw and a screw mounting hole.

Description

Technical Field

[0001] The utility model relates to the technical field of beneficiation equipment, and particularly relates to a self-priming flotation machine. Background Art

[0002] A flotation machine is short for a flotation separator, referring to the mechanical equipment for completing the flotation process. In the flotation machine, the pulp treated with reagents is agitated and aerated, so that some of the ore particles are selectively fixed on the bubbles; the ore particles floating to the surface of the pulp are scraped out to form a foam product, and the rest are retained in the pulp to achieve the purpose of separating minerals.

[0003] There are many structural forms of flotation machines. The most commonly used one is the mechanical agitation flotation machine. When it works, it mainly sucks the pulp into the flotation cell, agitates it, and then removes the floating foam to complete the flotation operation.

[0004] For example, the patent with the application number CN201821344020.0 discloses a self-priming flotation machine, which includes a flotation cell. A support frame is arranged on the upper part of the flotation cell. A stirring and foaming device and a foam scraping device are arranged on the support frame. The stirring and foaming device includes a fixed seat. A stirring shaft is rotatably connected to the fixed seat. A first motor for driving the stirring shaft to rotate is also arranged on the support frame. The lower end of the fixed seat is connected with a tubular central cylinder. A pulp inlet hopper is arranged on the outer side wall of the flotation cell. A pulp guide pipe is connected between the central cylinder and the pulp inlet hopper. An air inlet conduit is arranged on the upper part of the central cylinder. The lower end of the stirring shaft is connected with an impeller. A locking bolt is arranged at the central position of the lower end of the stirring shaft. After the locking bolt is locked with the stirring shaft, the locking bolt rotates coaxially with the stirring shaft. An annular sleeve for the locking bolt to rotate in is arranged at the bottom of the flotation cell; by positioning the stirring shaft through the fixed seat on the upper part of the flotation cell and the annular sleeve at the bottom of the flotation cell at the same time, the situation that the stirring shaft is deformed during rotation can be avoided, and the operation stability is improved.

[0005] However, this patent still has the following defects: Although this patent solves the positioning stability of the stirring shaft, when the foam scraping device is used, the foam is simply scraped away by a scraper rotating on the flotation cell. Since the foam will float on the liquid surface of the entire flotation cell, when the scraper extends below the liquid surface, the scraper will scrape away the pulp together. If the scraper is too high from the liquid surface, it will cause that only a part of the foam can be scraped when the scraper rotates, and the foam on the opposite sides of the rotation axis of the scraper cannot be scraped, thus resulting in low working efficiency. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a self-priming flotation machine to solve the problems raised in the above background art.

[0007] To solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A self-priming flotation machine, comprising a flotation cell, a central cylinder body and a foam scraping device. The foam scraping device includes a first driving roller, a second driving roller and a foam conveyor belt. A circulating scraper for scraping the foam is fixedly connected to the outer wall of the foam conveyor belt.

[0009] A separation floating block is arranged below one end of the foam conveyor belt. One side of the separation floating block is rotatably connected to a guiding and overlapping plate that overlaps with the top of the side surface of the flotation cell.

[0010] A further improvement of the technical solution of the present utility model lies in that: the cross-section of the separation floating block is triangular.

[0011] A further improvement of the technical solution of the present utility model lies in that: traction wires are fixedly connected to both ends of the separation floating block. The outer walls of the traction wires movably penetrate through guiding tubes fixedly connected to the outer wall of the flotation cell. A limiting spring is fixedly connected to the end of the traction wire far away from the separation floating block. One end of the limiting spring is fixedly connected to the outer wall of the flotation cell by screws. A screw mounting hole for adjusting the mounting position of the screws is opened on the outer wall of the flotation cell.

[0012] A further improvement of the technical solution of the present utility model lies in that: an auxiliary positioning roller for supporting the foam conveyor belt is movably connected to the top of the inner wall of the foam conveyor belt. Both ends of the auxiliary positioning roller are rotatably connected to the inner wall of the flotation cell.

[0013] A further improvement of the technical solution of the present utility model lies in that: driving pulleys are fixedly connected to one ends of the first driving roller and the second driving roller. A driving belt is movably connected to the outer walls of the two groups of driving pulleys.

[0014] A further improvement of the technical solution of the present utility model lies in that: one end outer wall of the second driving roller is connected by belt transmission to a driving motor for providing power to it.

[0015] A further improvement of the technical solution of the present utility model lies in that: the number of the foam scraping devices is two groups, and the two groups of foam scraping devices are respectively distributed on both sides of the central cylinder body.

[0016] Due to the adoption of the above technical solution, the technical progress obtained by the present utility model compared with the prior art is:

[0017] The present utility model provides a self-priming flotation machine. By using the first driving roller, the second driving roller, the foam conveyor belt and the circulating scraper in the foam scraping device, the foam scraping device can cover most areas of the pulp liquid surface in the flotation cell, and at the same time can quickly and evenly scrape out the foam in the covered areas, improving the foam scraping efficiency. At the same time, the structure of the foam scraping device is simple and convenient for maintenance.

[0018] The utility model provides a self-priming flotation machine. By using the cooperation of a separation floating block, a guiding connecting plate, a guiding pipe, a limiting spring, a traction wire, a screw and a screw mounting hole, the foam scraped by the foam scraping device can separate the foam and the pulp it carries under the guidance of the separation floating block, thereby ensuring the scraping quality of the foam. At the same time, the position height of the separation floating block can be changed by adjusting the mounting position of the screw, making it convenient to cooperate with the foam scraping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the detailed structure of the present utility model;

[0020] Figure 2 is a schematic diagram of the structure of the present utility model;

[0021] Figure 3 is an enlarged schematic diagram of the structure at A of the present utility model;

[0022] Figure 4 is a schematic diagram of the structure of the separation floating block of the present utility model;

[0023] Figure 5 is a schematic diagram of the rear view structure of the flotation cell of the present utility model.

[0024] In the figure: 1, flotation cell; 2, central cylinder; 3, foam scraping device; 4, foam conveyor belt; 5, circulating scraper; 6, first driving roller; 7, auxiliary positioning roller; 8, separation floating block; 9, guiding connecting plate; 10, guiding pipe; 11, traction wire; 12, limiting spring; 13, second driving roller; 14, transmission belt; 15, transmission belt pulley; 16, driving motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In the description of the present utility model, it should also be noted that, unless otherwise clearly defined and limited, the terms "arranged", "installed", "connected", and "connected" should be understood in a broad sense. 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] The following further describes the present utility model in detail with reference to the embodiments:

[0027] As Figures 1-5 shown, the present utility model provides a self-priming flotation machine, including a flotation cell 1, a central cylinder 2 and a foam scraping device 3. The foam scraping device 3 includes a first driving roller 6, a second driving roller 13 and a foam conveyor belt 4. A circulating scraper 5 for scraping the foam is fixedly connected to the outer wall of the foam conveyor belt 4;

[0028] A separating floating block 8 is arranged below one end of the foam conveyor belt 4, and a guiding and overlapping plate 9 that overlaps with the top of the side surface of the flotation cell 1 is rotatably connected to one side of the separating floating block 8.

[0029] An auxiliary positioning roller 7 for supporting the foam conveyor belt 4 is movably connected to the top of the inner wall of the foam conveyor belt 4, and both ends of the auxiliary positioning roller 7 are rotatably connected to the inner wall of the flotation cell 1.

[0030] Driving pulleys 15 are fixedly connected to one ends of the first driving roller 6 and the second driving roller 13, and a driving belt 14 is movably connected to the outer walls of the two groups of driving pulleys 15.

[0031] One end of the outer wall of the second driving roller 13 is connected by a belt to a driving motor 16 for providing power to it. The number of foam scraping devices 3 is two groups, and the two groups of foam scraping devices 3 are respectively distributed on both sides of the central cylinder 2.

[0032] As Figures 1-5 shown, on the basis of Embodiment 1, the present invention provides a technical solution: Preferably, the cross-section of the separating floating block 8 is triangular.

[0033] Traction wires 11 are fixedly connected to both ends of the separating floating block 8, the outer walls of the traction wires 11 movably penetrate through a guiding tube 10 fixedly connected to the outer wall of the flotation cell 1, a limiting spring 12 is fixedly connected to the end of the traction wire 11 far from the separating floating block 8, one end of the limiting spring 12 is fixedly connected to the outer wall of the flotation cell 1 by screws, and screw mounting holes for adjusting the mounting position of the screws are provided on the outer wall of the flotation cell 1.

[0034] The separating floating block 8 is subjected to the buoyancy of the pulp, enabling it to float on the surface of the pulp, and being able to maintain a dynamic balance state relative to the flotation cell 1 under the elastic traction of the traction wire 11 and the limiting spring 12, avoiding excessive position deviation. At the same time, between the separating floating block 8 and the side of the flotation cell 1, through the provided guiding and overlapping plate 9, it can be avoided that when the separating floating block 8 floats, the transmission path of the foam between it and the flotation cell 1 is damaged, ensuring the subsequent guiding and conveying effect of the foam. At the same time, the tail end of the limiting spring 12 is fixed by screws. When it is necessary to adjust the position height of the separating floating block 8, the screws are installed into the screw mounting holes at the center on one side of the flotation cell 1, and the adjustment can be completed. Conversely, by operating in the opposite way, the position height of the separating floating block 8 can be reduced, making the bottom of the separating floating block 8 more closely attached to the pulp liquid surface, and at the same time facilitating the cooperative use with the foam scraping device 3.

[0035] Next, the working principle of this self-priming flotation machine will be specifically described.

[0036] As Figures 1-5As shown, when the foam scraping device 3 scrapes the foam, the driving motor 16 is started, and it drives the driving belt pulley 15 to rotate through the belt. The driving belt pulley 15 then drives the second driving roller 13 and the first driving roller 6 to rotate in the same direction. The transmission belt 14 then starts to rotate driven by the first driving roller 6 and the second driving roller 13. The circulating scraper 5 installed on the outer wall of the foam conveyor belt 4 then starts to scrape the position of the foam separating floating block 8 on the liquid surface in the flotation cell 1. The bottom area of the foam conveyor belt 4 will present an arc shape due to the action of gravity, and the circulating scraper 5 installed on this part is closer to the liquid surface. The circulating scraper 5 here will scrape most of the foam and a certain amount of pulp to a position close to the separating floating block 8.

[0037] However, as the foam conveyor belt 4 rotates, the circulating scraper 5 gradually rises during the process of moving towards the separating floating block 8. At this time, the carried pulp will gradually decrease. When the circulating scraper 5 scrapes the foam onto the separating floating block 8 as the foam conveyor belt 4 rotates, since the length of the hypotenuse of the separating floating block 8 close to the inside of the flotation cell 1 is greater than that of the other side, the pulp will be blocked by the long inclined surface of the separating floating block 8, while the foam will be driven by the circulating scraper 5 to move to the other inclined surface at the top of the separating floating block 8. Subsequently, the pulp flows back into the flotation cell 1 under the action of gravity, and the foam will be discharged from the flotation cell 1 under the action of gravity and the push of the subsequent foam. In this way, the circulating scraper 5 installed on the surface of the foam conveyor belt 4 in the foam scraping device 3 can quickly scrape out the foam in the flotation cell 1.

[0038] At the same time, the height of one end of the first driving roller 6 can be adjusted higher relative to the height of the second driving roller 13.

[0039] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, modifications or improvements made without departing from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A self-priming flotation machine, comprising a flotation cell (1), a central cylinder (2) and a foam scraping device (3), characterized in that: The foam scraping device (3) includes a first driving roller (6), a second driving roller (13) and a foam conveyor belt (4), and a circulating scraper (5) for scraping foam is fixedly connected to the outer wall of the foam conveyor belt (4); A separation floating block (8) is arranged below one end of the foam conveyor belt (4), and a guiding and overlapping plate (9) which is rotationally connected to one side of the separation floating block (8) and overlaps with the top of the side surface of the flotation cell (1) is provided.

2. The self-priming flotation machine according to claim 1, wherein: The cross-section of the separation floating block (8) is triangular.

3. The self-priming flotation machine according to claim 1, characterized in that: Both ends of the separation floating block (8) are fixedly connected with traction lines (11), the outer walls of the traction lines (11) movably penetrate through a guiding pipe (10) fixedly connected to the outer wall of the flotation cell (1), one end of the traction line (11) far away from the separation floating block (8) is fixedly connected with a limiting spring (12), one end of the limiting spring (12) is fixedly connected with the outer wall of the flotation cell (1) through a screw, and a screw mounting hole for adjusting the mounting position of the screw is formed in the outer wall of the flotation cell (1).

4. The self-priming flotation machine according to claim 1, wherein: An auxiliary positioning roller (7) for supporting the foam conveyor belt (4) is movably connected to the top of the inner wall of the foam conveyor belt (4), and both ends of the auxiliary positioning roller (7) are rotationally connected to the inner wall of the flotation cell (1).

5. The self-priming flotation machine according to claim 1, characterized in that: Driving pulleys (15) are fixedly connected to one ends of the first driving roller (6) and the second driving roller (13), and a transmission belt (14) is movably connected to the outer walls of the two groups of driving pulleys (15).

6. The self-priming flotation machine according to claim 1, wherein: One end of the outer wall of the second driving roller (13) is connected with a driving motor (16) for providing power through belt transmission.

7. The self-priming flotation machine according to claim 1, wherein: The number of the foam scraping devices (3) is two groups, and the two groups of foam scraping devices (3) are respectively distributed on both sides of the central cylinder body (2).

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