CN112892880B

CN112892880B - Intelligent flotation device froth scraping device

Info

Publication number: CN112892880B
Application number: CN202110171854.6A
Authority: CN
Inventors: 倪荣国
Original assignee: Comrolla Co ltd
Current assignee: Comrolla Co ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2022-09-09
Anticipated expiration: 2041-02-08
Also published as: CN112892880A

Abstract

The invention discloses an intelligent froth scraping device of a flotation machine, which comprises a flotation main body, a froth scraping device and a froth scraping device, wherein the flotation main body comprises a flotation tank, a flotation cavity arranged in the flotation tank and a feeding hole arranged at the lower end of the flotation tank; the scraping assembly comprises an upper plate arranged at the upper end of the flotation tank, a filtering bubble plate rotationally connected to the upper plate and a lower plate arranged at the lower end of the upper plate; and a driving assembly provided at the lower plate.

Description

Intelligent flotation device froth scraping device

Technical Field

The invention relates to the technical field of intelligent mineral flotation technology, in particular to a froth scraping device of an intelligent flotation machine.

Background

In the prior art, a hollow shaft tube is generally adopted to introduce air into ore pulp, and the ore pulp is stirred by the rotation of a stirring blade at the end part of the shaft tube, so that the air is dispersed into the ore pulp to form bubbles, and the bubbles capture mineral particles, rise to the upper part of an ore pulp tank and overflow into a mineral recovery tank outside the opening part of the ore pulp tank. As the size of the tank increases, the distance of the froth from the edge of the tank increases, which means that the mineral-containing froth cannot leave the tank more quickly. The retention time of the foam in the slurry tank is ever long, the probability of foam polymerization increase is increased, and the selected minerals fall back to the slurry tank again, so that the separation effect is reduced. Existing flotation machines are therefore often provided with a froth scraping mechanism for removing froth from the slurry tank. The existing foam scraping mechanism is a rotary foam scraping plate generally, and the foam scraping plate rotates around the center of a slurry tank to scrape foam out of the slurry tank. However, the froth scraping mechanism pushes the froth to move along the circumferential direction while pushing the froth radially outward, so that the froth moves a longer distance away from the slurry tank, obviously, the froth is more aggregated or broken in the slurry tank, and the flotation effect is reduced.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and title of the application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.

The invention is provided in view of the problems of the prior intelligent froth scraping device of the flotation machine.

Therefore, the invention aims to provide an intelligent froth scraping device of a flotation machine.

In order to solve the technical problems, the invention provides the following technical scheme: an intelligent froth scraping device of a flotation machine comprises a flotation main body, a froth scraping device and a froth scraping device, wherein the flotation main body comprises a flotation tank, a flotation cavity arranged in the flotation tank and a feeding hole arranged at the lower end of the flotation tank; the scraping assembly comprises an upper plate arranged at the upper end of the flotation tank, a filtering bubble plate rotationally connected to the upper plate and a lower plate arranged at the lower end of the upper plate; and a driving assembly provided at the lower plate.

As a preferable scheme of the intelligent froth scraping device of the flotation machine, the invention comprises the following steps: the driving component comprises a rotating ring connected on the lower half, a convex part arranged on the upper surface of the rotating ring and a driving rod rotationally connected on the lower surface of the filtering bubble plate,

the lower end of the driving rod is arranged to be an arc surface, and the driving rod is always abutted to the rotating ring.

As a preferable scheme of the intelligent froth scraping device of the flotation machine, the invention comprises the following steps: the filtering foam plate is characterized in that a connecting sheet is rotatably connected to the edge of the filtering foam plate close to the upper plate, a plurality of placing grooves matched with the filtering foam plate are formed in the upper plate, the placing grooves penetrate through the upper plate, a connecting block is arranged at the groove wall of each placing groove, the connecting sheet is rotatably connected with the connecting block, and the periphery of the filtering foam plate is provided with a round angle.

As a preferable scheme of the intelligent froth scraping device of the flotation machine, the invention comprises the following steps: the upper plate is provided with a lead groove communicated with the placing groove, the lead groove is connected with the driving rod in a sliding mode, the lead groove is arranged at the position, close to the center of the upper plate, of the placing groove, and a waterproof film is arranged in the lead groove.

As a preferable scheme of the intelligent froth scraping device of the flotation machine, the invention comprises the following steps: the side wall position of upper plate has seted up the catch basin, the lower extreme of filtration bubble board stretches out downwards has accepts the board, it inclines to the notch of catch basin to accept the board.

As a preferable scheme of the intelligent froth scraping device of the flotation machine, the invention comprises the following steps: the utility model discloses a flotation tank, including flotation tank, switch board, filter bubble board, switch board and actuating lever, set up a plurality of and filter bubble board complex discharge gates on the lateral wall of flotation tank, it is connected with the switch board to rotate on the discharge gate, the switch board lower extreme is articulated with the discharge gate, be equipped with the actuating lever between switch board and the switch board.

As a preferable scheme of the intelligent froth scraping device of the flotation machine, the invention comprises the following steps: the driving rod comprises a first connecting rod rotatably connected at the upper end of the filtering bubble plate and a second connecting rod hinged with the first connecting rod, the second connecting rod is hinged with the upper end of the switch plate,

the utility model discloses a flotation tank, including flotation tank, switch board, auxiliary scraper blade, buckle form department, the gyro wheel has outwards stretched out at the slide bar both ends, the flotation tank is close to switch board lower extreme position and slides and is connected with auxiliary scraper blade, auxiliary scraper blade presents the form of buckling, the form department of buckling rotates and is connected with the slide bar, the gyro wheel has been seted up on the flotation tank with gyro wheel complex transverse groove.

As a preferable scheme of the intelligent froth scraping device of the flotation machine, the invention comprises the following steps: the flotation tank central point puts and is provided with the puddler, the puddler is provided with drive gear outward, be provided with the internal gear on the hypoplastron, be equipped with intermediate gear between internal gear and the drive gear.

As a preferable scheme of the intelligent froth scraping device of the flotation machine, the invention comprises the following steps: the upper end of the stirring rod is glided with a connecting sleeve, the driving gear is arranged outside the connecting sleeve, a sliding block is arranged on the inner side of the connecting sleeve, and a sliding groove matched with the sliding block is arranged outside the stirring rod.

The invention has the beneficial effects that: when the flotation operation is carried out, an operator starts or does not start the electric cylinder according to the requirement, if the electric cylinder is driven by the intermediate gear, the electric cylinder is not started, so that the stepping motor drives the intermediate gear to rotate, then the rotating ring is driven to rotate, when the rotating ring rotates, the bulge part positioned at the upper end position can be continuously abutted against the lower end of the driving rod at the lower end of each filtering bubble plate, then the driving rod can be jacked upwards because the bulge part is high, the filtering bubble plates can firstly move upwards for a short distance after jacking, then the rotating ring starts to rotate at the hinged position of the connecting plate and the placing groove, at the moment, the switch plate can be pushed away under the action of the first connecting rod and the second connecting rod, at the moment, the movement of the switch plate can drive the auxiliary scraper plate to move, so that the foam on the surface of the filtering bubble plates can be scraped by one end of the auxiliary scraper plate, and the foam at the discharge port can be scraped, the discharge is realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor. Wherein:

fig. 1 is a schematic diagram of the whole structure of the intelligent froth scraping device of the flotation machine.

Fig. 2 is a structural sectional view of a froth scraping component of the intelligent flotation machine froth scraping device of the invention.

Fig. 3 is an enlarged schematic view of a part a of the structure in fig. 2 of the intelligent froth scraping device of the flotation machine of the invention.

Fig. 4 is a schematic diagram of a linkage structure of a switch plate of the intelligent froth scraping device of the flotation machine of the invention.

Fig. 5 is an explosion schematic diagram of a connection structure of an internal gear and a driving gear of the intelligent froth scraping device of the flotation machine.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Furthermore, the present invention is described in detail with reference to the drawings, and for convenience of illustration, the cross-sectional views illustrating the device structures are not enlarged partially according to the general scale when describing the embodiments of the present invention, and the drawings are only exemplary, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Example 1

Referring to fig. 1-5, an intelligent froth scraping device of a flotation machine comprises a flotation main body 100, a flotation tank 101, a flotation cavity 102 arranged in the flotation tank 101 and a feeding hole arranged at the lower end of the flotation tank 101; a scraping assembly 200 including an upper plate 201 disposed at an upper end position of the flotation tank 101, a filter bubble plate 202 rotatably coupled to the upper plate 201, and a lower plate 203 disposed at a lower end of the upper plate 201; and a driving assembly 300, the driving assembly 300 is arranged at the lower plate 203, the driving assembly 300 comprises a rotating ring 301 connected to the lower plate 203, a convex part 302 arranged on the upper surface of the rotating ring 301, and a driving rod 303 rotatably connected to the lower surface of the filtering bubble plate 202, wherein the lower end of the driving rod 303 is arranged into a circular arc surface, the driving rod 303 is always abutted against the rotating ring 301, a connecting piece 304 is rotatably connected to the edge of the filtering bubble plate 202 close to the upper plate 201, a plurality of placing grooves 305 matched with the filtering bubble plate 202 are arranged on the upper plate 201, the placing grooves 305 penetrate through the upper plate 201, a connecting block is arranged at the groove wall of the placing groove 305, the connecting piece 304 is rotatably connected with the connecting block, the periphery of the filtering bubble plate 202 is arranged into a round angle, a lead groove 306 communicated with the placing groove 305 is arranged on the upper plate 201, the lead groove 306 is connected with the driving rod 303 in a sliding manner, the lead groove 306 is arranged at a position close to the center of the placing groove 305 close to the upper plate 201, the lead groove 306 is internally provided with a waterproof membrane, the side wall of the upper plate 201 is provided with a drain groove 400, the lower end of the filtering bubble plate 202 extends downwards to form a bearing plate, the bearing plate inclines towards the notch of the drain groove 400, the side wall of the flotation tank 101 is provided with a plurality of discharge holes 402 matched with the filtering bubble plate 202, the discharge holes 402 are rotatably connected with a switch plate 403, the lower end of the switch plate 403 is hinged with the discharge holes 402, an interconnecting rod 404 is arranged between the switch plate 403 and the filtering bubble plate 202, the interconnecting rod 404 comprises a first connecting rod 404a rotatably connected with the upper end of the filtering bubble plate 202 and a second connecting rod 404b hinged with the first connecting rod 404a, the second connecting rod 404b is hinged with the upper end of the switch plate 403, wherein the flotation tank 101 is connected with an auxiliary scraper 405 in a sliding manner near the lower end of the switch plate, the auxiliary scraper 405 is bent, the bent part is connected with a slide rod 403, and two ends of the slide rod extend outwards to form rollers 407, the flotation tank 101 is provided with a transverse groove 408 matched with the roller 407, the central position of the flotation tank 101 is provided with a stirring rod 500, a driving gear 501 is arranged outside the stirring rod 500, an inner gear 502 is arranged on the lower plate 203, an intermediate gear 503 is arranged between the inner gear 502 and the driving gear 501, the upper end of the stirring rod 500 slides to form a connecting sleeve, the driving gear 501 is arranged outside the connecting sleeve, the inner side of the connecting sleeve is provided with a sliding block, a sliding groove matched with the sliding block is arranged outside the stirring rod 500, and floats are arranged outside the upper plate 201 and the lower plate 203.

Specifically, the main structure of the present invention includes a flotation main body 100, in this embodiment, the flotation main body 100 includes a flotation tank 101, the flotation tank 101 is integrally placed in a vertical direction, the upper end of the flotation tank 101 is cylindrical, the lower end of the flotation tank 101 is inverted circular truncated cone, a flotation cavity 102 is formed inside the flotation tank 101 for subsequent receiving and flotation operations, and then a mixing member is formed inside the flotation tank 101, the mixing member is mainly used for stirring and flotation operations of the materials inside, and a feed inlet is also formed at the lower end of the flotation tank 101 and used for feeding materials.

Further, the scraping assembly 200 is further included, in this embodiment, the scraping assembly 200 includes an upper plate 201 disposed at an upper end of the flotation tank 101, the upper plate 201 is disposed near an upper end of the flotation tank 101, a discharge port 402 is disposed above the upper plate 201 of the flotation tank 101, the discharge port 402 is used for discharging clean coal bubbles above a liquid level after flotation, a plurality of filtering bubble plates 202 are further rotatably connected to the upper plate 201, the filtering bubble plates 202 are used for separating bubbles and separating bubbles from the liquid level, a lower plate 203 is further rotatably connected below the upper plate 201 for bearing the whole scraping assembly 200, a lower surface of the lower plate 203 is in a circular truncated cone shape, a contact area with the liquid level below can be increased, and stability during operation can be increased.

Preferably, a stirring rod 500 is rotatably connected to the center of the flotation tank 101, and the upper plate 201 and the lower plate 203 are both arranged on the stirring rod 500 and take the stirring rod 500 as a rotating center column.

Further, in order to be able to drive the rotation of each filter bubble plate 202 and then push out the foam, a driving assembly 300 is provided at the position of the lower plate 203, in this embodiment, the driving assembly 300 includes a rotating ring 301 connected to the lower plate 203, the rotating ring 301 is circular and has a long block shape in cross section, then a protruding portion 302 is provided at a fixed position on the upper surface of the rotating ring 301, the protruding portion 302 protrudes upward, and the overall shape is a circular arc shape, then a driving rod 303 is rotatably connected to the lower surface of each filter bubble plate 202, the driving rod 303 is maintained in a vertical arrangement, while the lower end of the driving rod 303 is provided as a circular arc surface and is always abutted against the upper surface of the rotating ring 301.

Then in order to realize the spiral-up of filtering bubble plate 202, the peripheral position that is close to upper plate 201 at filtering bubble plate 202 rotates and is connected with connection piece 304, connection piece 304 shape is oval, then in order to can place filtering bubble plate 202, a plurality of standing groove 305 has been seted up on upper plate 201, and then the other end of connection piece 304 is then articulated with the lateral wall of standing groove 305, and then when filtering bubble plate 202 rotated, can make filtering bubble plate 202 earlier upwards remove a small distance, then begin to rotate with the articulated position of connecting plate and standing groove 305, elect the foam.

Preferably, a lead groove 306 is formed in the upper plate 201, the lead groove 306 is formed in the vertical direction, the upper end of the lead groove is communicated with the placing groove 305, the lower end of the lead groove is communicated downwards, the driving rod 303 is connected in the lead groove 306 in a sliding manner, and a waterproof film is further arranged in the lead groove 306 to prevent liquid or foam from entering the lead groove 306.

Then, a drainage groove 400 is formed in the side wall of the upper plate 201, the inside of the side wall of the upper plate 201 is communicated with the flotation cavity 102 through the drainage groove 400, then a receiving plate is further arranged in the drainage groove 400, the receiving plate inclines downwards, the upper end of the receiving plate turns upwards, the receiving plate is then connected with the placing groove 305, and then liquid and foam can enter the drainage groove 400 and then flow onto the filtering foam plate 202 through the guiding of the receiving plate.

Further, a switch board 403 is rotatably connected to the discharge port 402, the lower end of the switch board 403 is hinged to the discharge port 402, the rotation plane is vertically arranged, then an interconnecting rod 404 is connected between the switch board 403 and the filtering foam board 202, in this embodiment, the interconnecting rod 404 includes a first connecting rod 404a, the first connecting rod 404a is hinged to the side wall of the switch board 403, then a second connecting rod 404b is connected to one end of the first connecting rod 404a, which is far away from the switch board 403, the other end of the second connecting rod 404b is hinged to the filtering foam board 202, and a certain included angle is formed between the first connecting rod 404a and the second connecting rod 404b, the included angle is between 150 ° and 160 °, and after the filtering foam board 202 is turned up, the switch board 403 is pushed out under the action of the first connecting rod 404a and the second connecting rod 404b, so as to open the discharge port 402.

Further, in order to realize that the foam is completely pushed out, the lower end position of the flotation tank 101 close to the switch board 403 is connected with an auxiliary scraper 405 in a sliding manner, the auxiliary scraper 405 is bent and extends in a downward direction, a sliding rod is further arranged at the bent position, two ends of the sliding rod extend outwards, two extending ends of the sliding rod are connected with rollers 407 in a rotating manner, transverse grooves 408 matched with the rollers 407 are formed in the flotation tank 101, the transverse grooves 408 are formed in the horizontal direction, one end of the auxiliary scraper 405 extends out to form an auxiliary rod 409 hinged with the outer side wall of the switch board 403, and when the switch board 403 is pushed outwards, the auxiliary scraper 405 can be pushed towards the inside of the flotation tank 101, then the auxiliary scraper 405 is moved to the filtering bubble board 202, and the foam on the filtering bubble board 202 is scraped.

Further, in order to drive the rotation of the rotation ring 301, a driving gear 501 is provided outside the stirring rod 500, the driving gear 501 may follow the rotation of the stirring rod 500, and an internal gear 502 is further provided on the inner wall of the rotation ring 301. The internal gear 502 is provided with two layers, one layer is arranged above, the other layer is arranged below in a close manner, then the lower plate 203 is further provided with an intermediate gear 503, the lower end of the intermediate gear 503 is provided with a stepping motor 504, then the lower end of the stepping motor 504 is provided with an electric cylinder 505 which can drive the intermediate gear 503 to move upwards or downwards, further an operator can control the electric cylinder 505 to enable the rotation of the rotating ring 301 to be controlled by the intermediate gear 503, or after the intermediate gear 503 moves upwards, the intermediate gear 503 is meshed with the internal gear 502 and the driving gear 501, and at the moment, the rotation of the rotating ring 301 is driven by the rotation of the stirring rod 500.

The operation process is as follows: when the flotation operation is performed, an operator starts or stops the electric cylinder 505 as required, if the intermediate gear 503 is selected to drive, the electric cylinder 505 is not started, so that the stepping motor 504 drives the intermediate gear 503 to rotate, and then drives the rotating ring 301 to rotate, when the rotating ring 301 rotates, the protruding part 302 at the upper end position continuously abuts against the lower end of the driving rod 303 at the lower end of each filtering bubble plate 202, then the driving rod 303 is jacked up because the protruding part 302 is high, the filtering bubble plates 202 move upwards for a short distance after jacking, then the connecting plate starts to rotate at the hinge position of the connecting plate and the placing groove 305, at this time, the switch plate 403 is pushed away under the action of the first connecting rod 404a and the second connecting rod 404b, then, the movement of the switch plate 403 drives the auxiliary scraper 405 to move, so that one end of the auxiliary scraper 405 scrapes off foams on the surface of the filtering bubble plates 202, and scraping to a discharge port 402 to realize discharge.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. The utility model provides a bubble device is scraped to intelligent flotation device which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the flotation main body (100) comprises a flotation tank (101), a flotation cavity (102) arranged in the flotation tank (101) and a feeding hole arranged at the lower end of the flotation tank (101);

the scraping assembly (200) comprises an upper plate (201) arranged at the upper end of the flotation tank (101), a filtering bubble plate (202) rotatably connected to the upper plate (201), and a lower plate (203) arranged at the lower end of the upper plate (201); and (c) a second step of,

a driving assembly (300), the driving assembly (300) being disposed at the lower plate (203), the driving assembly (300) including a rotary ring (301) coupled to the lower plate (203), a boss (302) disposed at an upper surface of the rotary ring (301), and a driving lever (303) rotatably coupled to a lower surface of the bubble filtration plate (202),

wherein the lower end of the driving rod (303) is set to be an arc surface, the driving rod (303) is always abutted against the rotating ring (301), a connecting sheet (304) is rotatably connected to the edge of the filtering bubble plate (202) close to the upper plate (201), a plurality of placing grooves (305) matched with the filtering bubble plate (202) are formed in the upper plate (201), the placing grooves (305) penetrate through the upper plate (201), a connecting block is arranged at the groove wall of each placing groove (305), the connecting sheet (304) is rotatably connected with the connecting block, the periphery of the filtering bubble plate (202) is set to be a fillet, a plurality of discharging holes (402) matched with the filtering bubble plate (202) are formed in the side wall of the flotation tank (101), a switch plate (403) is rotatably connected to the discharging holes (402), the lower end of the switch plate (403) is hinged to the discharging holes (402), an interconnecting rod (404) is arranged between the switch plate (403) and the filtering bubble plate (202), the interconnecting rod (404) comprises a first connecting rod (404 a) rotatably connected at the upper end position of the filter bubble plate (202) and a second connecting rod (404 b) hinged with the first connecting rod (404 a), the second connecting rod (404 b) is hinged with the upper end of the switch plate (403),

wherein, flotation tank (101) are close to switch board (403) lower extreme position and slide and are connected with supplementary scraper blade (405), supplementary scraper blade (405) presents the form of buckling, the form department of buckling is connected with the slide bar, the slide bar both ends are outwards stretched out and are had gyro wheel (407), set up on flotation tank (101) with gyro wheel (407) complex transverse groove (408), be connected with between supplementary scraper blade (405) and switch board (403) auxiliary rod (409).

2. The intelligent froth scraping device of the flotation machine of claim 1 further comprising: the upper plate (201) is provided with a lead groove (306) communicated with the placing groove (305), the lead groove (306) is connected with the driving rod (303) in a sliding mode, the lead groove (306) is arranged at the position close to the center of the placing groove (305) and close to the upper plate (201), and a waterproof film is arranged in the lead groove (306).

3. The intelligent froth scraping device of claim 1, wherein: the side wall of the upper plate (201) is provided with a drainage groove (400), the lower end of the filtering bubble plate (202) extends downwards to form a bearing plate, and the bearing plate inclines towards the notch of the drainage groove (400).

4. The intelligent froth scraping device of the flotation machine of claim 1 further comprising: a stirring rod (500) is arranged at the center of the flotation tank (101), a driving gear (501) is arranged outside the stirring rod (500), two internal gears (502) which are stacked are arranged on the lower plate (203), an intermediate gear (503) is arranged between the internal gears (502) and the driving gear (501),

the lower plate (203) is provided with a stepping motor (504) for driving the intermediate gear (503) to rotate, and the lower end of the stepping motor (504) is provided with an electric cylinder (505).

5. The intelligent froth scraping device of claim 4, wherein: a connecting sleeve is arranged at the upper end of the stirring rod (500) in a sliding mode, the driving gear (501) is arranged outside the connecting sleeve, a sliding block is arranged on the inner side of the connecting sleeve, and a sliding groove matched with the sliding block is arranged outside the stirring rod (500).