Foam scraping device for flotation machine

Abstract

The utility model provides a bubble scraping device for a flotation machine, which is arranged in an ore pulp tank of the flotation machine and comprises a base, a rotating seat and bubble scraping arms, the base is arranged in the ore pulp tank, the rotating seat is rotatably arranged on the base, and the bubble scraping arms are arranged on the rotating seat in an annular array; a cavity is formed in the foam scraping arm and communicated with the rotating seat, a long slotted hole is formed in one side, in the rotating direction, of the foam scraping arm and communicated with the cavity, and in the rotating process of the foam scraping arm, foam in the ore pulp tank enters the cavity through the long slotted hole. An auxiliary strip is arranged on the side, close to the long groove hole, of the bubble scraping arm, a wedge face is arranged at the front end of the auxiliary strip, the lower end of the wedge face is flush with the liquid level in the ore pulp tank, and the upper end of the wedge face is flush with the hole bottom of the long groove hole. The problems that when a traditional foam scraping mechanism scrapes foam, the foam residence time is long, the foam is extremely prone to being polymerized and increased, minerals fall back into an ore pulp tank, the flotation efficiency is low, and the effect is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mineral flotation equipment, in particular to a bubble scraping device for a flotation machine. Background Art

[0002] A flotation cell, short for flotation concentrator, refers to the mechanical equipment used to perform the flotation process. In a flotation cell, after the ore pulp has been treated with reagents, it is agitated and aerated, causing some mineral particles to selectively attach to the bubbles. These particles rise to the surface of the pulp and are scraped off to form a froth product, while the rest remains in the pulp, achieving the goal of separating the minerals.

[0003] The scraping structure of existing flotation machines mostly adopts rotating or drum-type scraping plates. When the rotating scraping plate is in operation, the foam is pushed out of the slurry tank. The foam movement distance of the outer edge of the scraping plate is longer. The longer the foam stays in the slurry tank, the greater the probability of foam aggregation. As a result, the probability of foam rupture and minerals falling back into the slurry tank also increases. Especially when the area of the slurry tank is large, the probability of minerals falling back will be higher, resulting in low flotation efficiency and poor effect. Utility Model Content

[0004] The utility model aims to provide a flotation machine scraping device, which solves the problems of traditional flotation scraping mechanism, such as long foam retention time, easy aggregation and growth, causing minerals to fall back into the pulp tank, and thus low flotation efficiency and poor effect.

[0005] The embodiment of the utility model is realized by the following technical solution: a flotation machine scraping device is arranged in the slurry tank of the flotation machine, comprising a base, a rotating seat and a scraping arm, wherein the base is arranged in the slurry tank, the rotating seat is rotatably arranged on the base, and the scraping arm is arranged in a circular array on the rotating seat;

[0006] A cavity is provided inside the scraping bubble arm, and the cavity is communicated with the rotating seat. A long slot hole is provided on one side of the scraping bubble arm along the rotation direction, and the long slot hole is communicated with the cavity. When the scraping bubble arm rotates, the foam in the slurry tank enters the cavity through the long slot hole.

[0007] Furthermore, an auxiliary strip is provided on one side of the scraping arm close to the long slot hole, and a wedge surface is provided at the front end of the auxiliary strip, the lower end of the wedge surface is level with the liquid level in the slurry tank, and the upper end of the wedge surface is level with the bottom of the long slot hole.

[0008] Furthermore, a defoaming pipe is provided in the cavity, and a plurality of spray holes are provided in a ring array on the wall of the defoaming pipe.

[0009] Furthermore, the defoaming tube is coaxially rotatably arranged in the cavity, and a plurality of defoaming components are arranged in an annular array on the defoaming tube.

[0010] Furthermore, the defoaming member is a spiral blade or a stirring blade.

[0011] Furthermore, a flushing groove is provided on the inner bottom of the cavity, and the flushing groove extends into the rotating seat.

[0012] Furthermore, the base is tubular, and an annular groove is provided in the base. The annular groove is coaxially arranged with the rotating seat. The scraping arm extends into the bottom of one side of the rotating seat and has a discharge hole. Several of the discharge holes are located above the annular groove, and a discharge pipe is provided at the bottom of the annular groove.

[0013] Furthermore, a shaft tube is coaxially arranged in the base, the rotating seat is rotatably connected to the shaft tube, and a ring gear is coaxially arranged on the rotating seat;

[0014] A reducer is provided in the base, and a driving gear is provided at the output end of the reducer, and the driving gear is meshed with the ring gear.

[0015] Furthermore, the shaft tube is sleeved with main conical teeth, one end of the defoaming tube extends out of the foam scraping arm and is sleeved with auxiliary conical teeth, and a plurality of the auxiliary conical teeth are engaged with the main conical teeth.

[0016] Furthermore, the lower end of the shaft tube is connected to a defoaming pump, and the upper end of the shaft tube is coaxially connected to a seat tube through a first rotary joint; a plurality of branch pipes are arranged in a circular array on the seat tube, and the plurality of branch pipes are connected to the seat tube, and one of the branch pipes is connected to a defoaming pipe through a second rotary joint.

[0017] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0018] 1. The scraping foam arm rotates with the rotating seat, and the scraping foam arms scrape the foam within their rotation range from the long slot holes into the cavity of the scraping foam arm during the rotation process, and then discharge the foam from the cavity into the rotating seat for further collection. While the scraping foam arm rotates in the slurry tank, the foam is quickly collected into the cavity, and there is no need to scrape the foam out of the slurry tank. This not only reduces the residence time of the foam in the slurry tank, but also greatly reduces the probability of the foam aggregating and increasing in the slurry tank, and the probability of the mineral falling back is also reduced. The generated foam can be quickly collected, and the flotation effect is good and the efficiency is high.

[0019] 2. In order to prevent the liquid in the slurry tank from entering the scraper arm, the auxiliary strip can be provided to increase the height of the long slot hole from the liquid level in the slurry tank. At the same time, the wedge surface on the auxiliary strip also helps the foam in the slurry tank to enter the scraper arm. Then, the scraper arm can maintain high-speed rotation within a certain range, which helps to quickly collect the foam while preventing the liquid from entering the scraper arm.

[0020] 3. Spraying liquid containing defoaming agent into the cavity through the defoaming tube can quickly turn the foam entering the scraping arm into liquid, which can prevent the foam from accumulating in the cavity. At the same time, the foam can be turned into a smaller liquid and quickly discharged to avoid the accumulation of foam affecting the entry of subsequent foam.

[0021] 4. The defoaming tube drives the defoaming element to rotate, which helps to quickly break the foam. The defoaming tube sprays a liquid containing a defoaming agent, which can quickly convert the foam entering the scraping arm into a liquid state. This prevents foam from accumulating in the cavity and quickly discharges the foam into a smaller liquid volume, thus preventing it from affecting the entry of subsequent foam. If the defoaming element is a spiral blade, it can also scrape the foam axially, facilitating the elimination and discharge of foam.

[0022] 5. The reducer meshes with the driving gear and the ring gear, thereby driving the ring gear to rotate, thereby driving the rotating seat to rotate. The rotation of the rotating seat also drives the several foam scraping arms to rotate, thereby performing the foam scraping operation and scraping the foam into the cavity of the foam scraping arms. The shaft tube is stationary, and the main bevel gear is stationary. As the rotating seat rotates, the several auxiliary bevel gears make a circular motion on the main bevel gear. The auxiliary bevel gears mesh with the main bevel gears. As the foam scraping arms make a circular motion around the main bevel gears, the auxiliary bevel gears mesh with the main bevel gears, driving the defoaming tube to rotate by engaging with the main bevel gears, thereby driving the several defoaming components to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the top view of the structure of a flotation machine scraping device and a flotation tank provided by the utility model;

[0025] Figure 2 This is a schematic cross-sectional view of the cooperation between the scraping arm, the base and the rotating seat in a scraping device for a flotation machine provided by the utility model;

[0026] Figure 3This is a schematic diagram of the cross-sectional structure of a bubble scraping arm in a bubble scraping device for a flotation machine provided by the utility model;

[0027] Icons: 1. Slurry tank, 2. Base, 3. Rotating seat, 4. Scraping arm, 41. Cavity, 42. Long slot hole, 43. Auxiliary strip, 431. Wedge surface, 44. Defoaming pipe, 441. Spray hole, 45. Defoaming part, 46. Flushing tank, 47. Discharge hole, 48. Auxiliary bevel gear, 5. Annular groove, 51. Discharge pipe, 6. Shaft tube, 61. Main bevel gear, 7. Reducer, 71. Ring gear, 72. Driving gear, 8. Seat tube, 81. First rotary joint, 82. Branch pipe, 83. Second rotary joint. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0030] Reference Figures 1 to 3 As shown, this embodiment provides a flotation machine scraping device, which is arranged in a pulp tank 1 and includes a base 2, a rotating base 3 and a scraping arm 4. The base 2 is arranged in the pulp tank 1, the rotating base 3 is rotatably arranged on the base 2, and the scraping arm 4 is arranged in a circular array on the rotating base 3;

[0031] More specifically, Figure 1-3As shown, a cavity 41 is coaxially provided inside the bubble scraping arm 4, which is connected to the rotating seat 3. A long slot 42 is formed on one side of the bubble scraping arm 4 along the rotation direction, and the long slot 42 is connected to the cavity 41. During the rotation of the bubble scraping arm 4, the foam in the slurry tank 1 enters the cavity 41 through the long slot 42. In specific implementation, the bubble scraping arm 4 rotates with the rotating seat 3, and then the bubble scraping arms 4 scrape the foam within their rotation range from the long slot 42 into the cavity 41 of the bubble scraping arm 4 during the rotation, and then discharge it from the cavity 41 into the rotating seat 3 for further collection. While the bubble scraping arm 4 rotates in the slurry tank 1, the foam is quickly collected into the cavity 41, and there is no need to scrape the foam out of the slurry tank 1, which not only reduces the residence time of the foam in the slurry tank 1, but also greatly reduces the probability of the foam aggregating and increasing in the slurry tank 1, and the probability of the mineral falling back is also reduced. The generated foam can be quickly collected, thereby achieving good flotation effect and high efficiency.

[0032] More specifically, Figure 1 and 3 As shown, an auxiliary strip 43 is provided on the side of the foam scraper arm 4 near the elongated slotted hole 42. A wedge surface 431 is provided at the front end of the auxiliary strip 43. The lower end of the wedge surface 431 is flush with the liquid level in the slurry tank 1, and the upper end of the wedge surface 431 is flush with the bottom of the elongated slotted hole 42. In a specific implementation, to prevent liquid in the slurry tank 1 from entering the foam scraper arm 4, the auxiliary strip 43 is provided to increase the height of the elongated slotted hole 42 from the liquid level in the slurry tank 1. At the same time, the wedge surface 431 on the auxiliary strip 43 also helps foam in the slurry tank 1 enter the foam scraper arm 4. As a result, the foam scraper arm 4 can maintain high-speed rotation within a certain range, facilitating rapid collection of foam while preventing liquid from entering the foam scraper arm 4.

[0033] like Figure 2 and 3 As shown, a defoaming tube 44 is provided in the cavity 41, and a plurality of spray holes 441 are provided in a circular array on the tube wall of the defoaming tube 44. By spraying a liquid containing a defoaming agent into the cavity 41 through the defoaming tube 44, the foam entering the foam scraping arm 4 can be quickly converted into liquid, thereby preventing the foam from accumulating in the cavity 41 and converting the foam into a smaller liquid and then quickly discharging it, thereby preventing the accumulation of foam from affecting the entry of subsequent foam.

[0034] More specifically, a defoaming pipe 44 is coaxially rotatably disposed within the cavity 41. A plurality of defoaming elements 45 are arranged in an annular array on the defoaming pipe 44. The defoaming elements 45 are spiral blades or stirring blades. The rotation of the defoaming elements 45 driven by the defoaming pipe 44 helps to quickly break up the foam. In conjunction with the defoaming pipe 44 spraying a liquid containing a defoaming agent, the foam entering the foam scraping arm 4 can be quickly converted to a liquid state, thereby preventing foam accumulation within the cavity 41 and rapidly discharging the foam into a smaller liquid volume to prevent subsequent foam from entering. If the defoaming elements 45 are spiral blades, they can also scrape the foam axially, facilitating the elimination and discharge of the foam.

[0035] More specifically, Figure 3 As shown, a flushing groove 46 is provided at the inner bottom of the cavity 41 and extends into the rotating seat 3. The flushing groove 46 helps to quickly discharge the foam and the liquid containing the defoaming agent after the foam bursts, especially when the defoaming member 45 is a spiral blade.

[0036] like Figure 2 As shown, the base 2 is tubular and has an annular groove 5 disposed therein. The annular groove 5 is coaxially arranged with the rotating base 3. A discharge hole 47 is formed at the bottom of one side of the foam scraping arm 4 extending into the rotating base 3. Several discharge holes 47 are located above the annular groove 5. A discharge pipe 51 is provided at the bottom of the annular groove 5. In practice, after the foam scraping arms 4 extend into the rotating base 3, the foam inside them and the defoaming liquid used for rinsing fall through the discharge holes 47 into the annular groove 5. Although the foam scraping arms 4 rotate with the rotating base 3, the discharge holes 47 remain above the annular groove 5. Consequently, the collected foam and liquid accumulate in the annular groove 5 and are then discharged through the discharge pipe 51 at the bottom for the next step of processing.

[0037] A shaft tube 6 is coaxially mounted within the base 2, with the rotating base 3 rotatably connected thereto. A ring gear 71 is coaxially mounted on the rotating base 3. A reducer 7 is mounted within the base 2, with a driving gear 72 disposed at its output end, which meshes with the ring gear 71. In practice, the reducer 7, through the meshing of the driving gear 72 and the ring gear 71, drives the ring gear 71 to rotate, thereby rotating the rotating base 3. This rotation of the rotating base 3 simultaneously drives the plurality of foam scraping arms 4 to perform the foam scraping operation, scraping the foam into the cavities 41 of the foam scraping arms 4.

[0038] More specifically, Figure 2As shown, the shaft tube 6 is sleeved with a main bevel gear 61, and one end of the defoaming tube 44 extends out of the foam scraping arm 4 and is sleeved with a secondary bevel gear 48. A plurality of secondary bevel gears 48 are engaged with the main bevel gear 61. The shaft tube 6 is stationary, and thus the main bevel gear 61 is stationary. As the rotating base 3 rotates, the plurality of secondary bevel gears 48 make a circular motion on the main bevel gear 61, and the secondary bevel gears 48 are engaged with the main bevel gear 61. As the foam scraping arm 4 makes a circular motion around the main bevel gear 61, the secondary bevel gears 48 drive the defoaming tube 44 to rotate by engaging with the main bevel gear 61, thereby driving the plurality of defoaming elements 45 to rotate.

[0039] More specifically, Figure 2 As shown, the lower end of the shaft tube 6 is connected to a defoaming pump, and the upper end of the shaft tube 6 is coaxially connected to the seat tube 8 via a first rotary joint 81. A plurality of branch tubes 82 are provided in an annular array on the seat tube 8, each of which is connected to the seat tube 8. One branch tube 82 is connected to a defoaming tube 44 via a second rotary joint 83. In practice, since the defoaming tubes 44 not only revolve around the shaft tube 6 but also rotate on their own, the shaft tube 6 is rotationally connected and connected to the seat tube 8 via the first rotary joint 81. The seat tube 8 rotates synchronously with the defoaming tubes 44, and the defoaming tubes 44 are rotationally connected to the branch tubes 82 on the seat tube 8 via the second rotary joint 83. This ensures that the defoaming liquid can be continuously pumped into the defoaming tubes 44 while the defoaming tubes 44 revolve and rotate on their own.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A flotation machine scraping device, arranged in a slurry tank (1) of the flotation machine, characterized in that: It comprises a base (2), a rotating seat (3) and a scraping foam arm (4), wherein the base (2) is arranged in the slurry tank (1), the rotating seat (3) is rotatably arranged on the base (2), and the scraping foam arm (4) is arranged in a circular array on the rotating seat (3); A cavity (41) is provided inside the foam scraping arm (4), and the cavity (41) is communicated with the rotating seat (3). A long slot hole (42) is provided on one side of the foam scraping arm (4) along the rotation direction, and the long slot hole (42) is communicated with the cavity (41). When the foam scraping arm (4) rotates, the foam in the slurry tank (1) enters the cavity (41) through the long slot hole (42).

2. A flotation machine scraping device according to claim 1, characterized in that: An auxiliary strip (43) is provided on one side of the scraping foam arm (4) close to the long slot hole (42), and a wedge surface (431) is provided at the front end of the auxiliary strip (43), the lower end of the wedge surface (431) is flush with the liquid level in the slurry tank (1), and the upper end of the wedge surface (431) is flush with the bottom of the long slot hole (42).

3. A flotation machine scraping device according to claim 2, characterized in that: A defoaming tube (44) is provided in the cavity (41), and a plurality of spray holes (441) are provided in a circular array on the tube wall of the defoaming tube (44).

4. A flotation machine scraping device according to claim 3, characterized in that: The defoaming pipe (44) is coaxially rotatably arranged in the cavity (41), and a plurality of defoaming members (45) are arranged in an annular array on the defoaming pipe (44).

5. A flotation machine scraping device according to claim 4, characterized in that: The defoaming member (45) is a spiral blade or a stirring blade.

6. A flotation machine scraping device according to claim 5, characterized in that: The inner bottom of the cavity (41) is provided with a flushing groove (46), and the flushing groove (46) extends into the rotating seat (3).

7. A flotation machine scraping device according to claim 6, characterized in that: The base (2) is tubular, and an annular groove (5) is provided in the base (2). The annular groove (5) is coaxially arranged with the rotating base (3). A discharge hole (47) is provided at the bottom of one side of the scraping arm (4) extending into the rotating base (3). Several of the discharge holes (47) are located above the annular groove (5). A discharge pipe (51) is provided at the bottom of the annular groove (5).

8. A flotation machine scraping device according to claim 7, characterized in that: A shaft tube (6) is coaxially arranged in the base (2), the rotating seat (3) is rotatably connected to the shaft tube (6), and a ring gear (71) is coaxially arranged on the rotating seat (3); A reducer (7) is provided in the base (2), and a driving gear (72) is provided at the output end of the reducer (7), and the driving gear (72) is meshed with the ring gear (71).

9. A flotation machine bubble scraping device according to claim 8, characterized in that: The shaft tube (6) is sleeved with main conical teeth (61), one end of the defoaming tube (44) extends out of the foam scraping arm (4) and is sleeved with auxiliary conical teeth (48), and a plurality of the auxiliary conical teeth (48) are engaged with the main conical teeth (61).

10. The flotation machine bubble scraping device according to claim 9, characterized in that: The lower end of the shaft tube (6) is connected to a defoaming pump, and the upper end of the shaft tube (6) is coaxially connected to a seat tube (8) through a first rotary joint (81); a plurality of branch tubes (82) are arranged in an annular array on the seat tube (8), and the plurality of branch tubes (82) are all connected to the seat tube (8), and one branch tube (82) is connected to one defoaming tube (44) through a second rotary joint (83).

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