A flotation machine for improving flotation quality and its microbubble generating system

Abstract

The present application discloses a flotation machine and a microbubble generating system for improving the flotation quality, which belongs to the technical field of flotation machines. The key points of the technical solution include: a flotation machine, wherein the flotation machine is provided with a flotation chamber, and a mineral slurry is placed in the flotation chamber; a stirring device is installed on the flotation machine, and the stirring device is used to stir the mineral slurry in the flotation chamber; a microbubble generator, which is provided with a plurality of microbubble generators and is installed at the bottom of the flotation chamber, and the microbubble generator sprays microbubbles; an injection system is installed on the microbubble generator, and the injection system is used to spray water flow and collide with bubbles; wherein the microbubble generator is connected to an air source. The present application can improve the splitting and dispersion effect of microbubbles, so that they can be more fully and efficiently combined with mineral particles, and further improve the flotation quality of the flotation machine.

Description

Technical Field

[0001] The present application belongs to the technical field of flotation machines, and in particular, relates to a flotation machine and a microbubble generating system thereof for improving flotation quality. Background Art

[0002] Flotation is one of the most important processes and is widely used. The traditional flotation process is that the ore pulp and reagents are mixed in a mixing tank and then fed into the flotation equipment for sorting, and the concentrate and tailings are obtained after sorting. In this process, mixing and flotation are two independent operations, and the ore pulp is mixed and flotated in sequence according to the process.

[0003] An existing foreign patent with publication number US20200368761A1 discloses a flotation line for processing mineral ore particles suspended in mud, wherein the flotation cell includes a mechanical agitator including a system for introducing flotation gas into the flotation cell.

[0004] Although the above-mentioned flotation machine can realize the flotation of mineral particles, with the continuous exploitation of ore resources, rich ores are becoming less and less, the dissociation particle size of useful minerals is getting smaller and smaller, and the grinding is getting finer and finer. The existing microbubble generation system can no longer perform flotation efficiently, and improvements are made to this problem. Summary of the invention

[0005] The purpose of this application is to provide a flotation machine and a microbubble generating system for improving flotation quality in order to solve the above-mentioned technical problems, so as to improve the splitting and dispersion effect of microbubbles, enable them to combine with mineral particles more fully and efficiently, and further improve the flotation quality of the flotation machine.

[0006] The present application provides a microbubble generation system for improving flotation quality, comprising:

[0007] A flotation machine, wherein the flotation machine is provided with a flotation chamber, and the mineral slurry is placed in the flotation chamber;

[0008] A stirring device, installed on the flotation machine, the stirring device is used to stir the mineral slurry in the flotation chamber;

[0009] A plurality of microbubble generators are provided and installed at the bottom of the flotation chamber, and the microbubble generators spray microbubbles;

[0010] An injection system is installed on the microbubble generator, and the injection system is used to spray water and collide with bubbles;

[0011] Wherein, the microbubble generator is connected to a gas source.

[0012] Further, the microbubble generator comprises:

[0013] The nozzle housing is provided with a flow channel;

[0014] A conical surface is disposed at the end of the nozzle housing;

[0015] A first spray hole is disposed on the conical surface, wherein a plurality of the first spray holes are provided and evenly distributed, and microbubbles are sprayed out through the first spray holes;

[0016] a second spray hole, for spraying a water flow driven by the spray system;

[0017] The axis of the second spray hole is the same as the axis of the spray head housing, and the axis of the first spray hole is perpendicular to the conical surface.

[0018] Furthermore, the injection system comprises:

[0019] A plurality of extraction ports are provided, which are distributed on the side wall of the nozzle housing and are adjacent to the bottom of the flotation chamber;

[0020] An extraction mechanism, installed in the extraction port, for extracting the mixed water liquid at the bottom of the flotation chamber;

[0021] A driving mechanism, mounted on the nozzle housing, the driving mechanism being used to provide power to the extraction mechanism;

[0022] An inner seat body is installed in the nozzle housing;

[0023] Wherein, the inner seat body is provided with a supporting portion, the supporting portion is connected to the inner wall surface of the nozzle housing, the second nozzle hole is placed on the inner seat body, the supporting portion is provided with a flow channel, the extraction port and the second nozzle hole are connected through the flow channel, the inner seat body is provided with a diffuser installed in the second nozzle hole, the axis of the diffuser is the same as the axis of the second nozzle hole, the diffuser extends from the inner seat body along the axis of the second nozzle hole to the outside of the nozzle housing, the diffuser is provided with a diffuser placed outside the nozzle housing, and the diameter of the diffuser is larger than the diameter of the second nozzle hole.

[0024] Furthermore, the extraction mechanism includes:

[0025] An impeller, movably mounted on the extraction port;

[0026] A rotating shaft, mounted and connected to the impeller;

[0027] Wherein, the rotating shaft is driven by a driving mechanism, the rotating shaft is installed in the supporting part, and the axis of the rotating shaft is perpendicular to the axis of the inner seat body.

[0028] Furthermore, the driving mechanism comprises:

[0029] The fan blades are placed in the circulation channel and movably mounted on the inner seat body, and when air flows in the circulation channel, the fan blades rotate;

[0030] The first bevel gear is connected to the fan blade;

[0031] A second bevel gear is mounted on the rotating shaft and corresponds to the first bevel gear;

[0032] Wherein, the fan blade is provided with a conical flow guide portion.

[0033] Furthermore, the nozzle housing includes:

[0034] A mounting frame is mounted on the circulation channel and the mounting position is close to the cone surface;

[0035] The venturi tube is mounted on a mounting frame;

[0036] A connecting pipe, one end of which is connected to the venturi tube;

[0037] Wherein, the inner seat body is provided with a chamber, the other end of the connecting pipe is connected to the chamber, and a filter membrane is provided between the chamber and the second spray hole.

[0038] Furthermore, the diffuser is provided with a first spring, and the first spring controls the diffuser to move toward the second spray hole.

[0039] Further, the specific working steps include:

[0040] S1, the microbubble generator is connected to the gas source and sprays microbubbles from the first spray hole;

[0041] S2, when the airflow flows in the flow channel of the microbubble generator, it drives the fan blades to rotate, driving the extraction mechanism to extract the mixed liquid at the bottom of the flotation chamber, and the mixed liquid mixed with mineral particles is sprayed out from the second spray hole through the injection system, colliding with the microbubbles sprayed from the first spray hole.

[0042] After the microbubble generator sprays microbubbles through the first spray hole, it sprays mineral slurry through the second spray hole. The mineral slurry impacts the microbubbles, which refines the microbubbles into smaller bubbles. At the same time, the impact of the microbubbles diffuses, so that the microbubbles can be fully dispersed at the bottom of the flotation chamber, thereby improving the flotation quality and efficiency of the microbubbles.

[0043] The beneficial effects of this application are:

[0044] 1. The microbubble generator is connected to the gas source to spray microbubbles into the mineral slurry. The microbubbles are combined with the mineral particles in the mineral slurry. The injection system can improve the microbubbles to be refined into smaller bubbles again in a short time after being sprayed from the microbubble generator. At the same time, the microbubbles are quickly dispersed in the horizontal direction through impact.

[0045] 2. The injection system extracts the slurry at the bottom of the flotation chamber through the extraction port. The extracted mineral slurry flows through the flow channel of the support part to the second spray hole for spraying. The extraction mechanism is driven by the driving mechanism.

[0046] 3. All the mineral slurry sprayed from the second spray hole hits the diffuser, so that the sprayed mineral slurry is scattered in the horizontal direction, thereby colliding with the microbubbles sprayed from the first spray hole. The first spring makes the slurry sprayed from the second spray hole have a certain impact force.

[0047] 4. The gas passes through the Venturi tube, causing the pure water in the chamber to flow into the Venturi tube under the action of the pressure difference. The pure water is mixed with the air and then sprayed out from the first spray hole, thereby improving the refinement of the bubbles when sprayed from the first spray hole and further improving the flotation quality of the flotation machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a schematic diagram of the structure of the flotation machine of this application;

[0049] Figure 2 This is a schematic diagram of the structure of the microbubble generator of the present application;

[0050] Figure 3 A cross-sectional view of the microbubble generator of the present application;

[0051] Figure 4 For this application Figure 3 A magnified view of point A;

[0052] Figure 5 This is a schematic diagram of the structure of the vibration mechanism of the present application;

[0053] Reference numerals in the figure are: 100, flotation machine; 110, flotation chamber; 200, stirring device; 300, microbubble generator; 310, nozzle housing; 311, circulation channel; 320, cone; 330, first spray hole; 340, second spray hole; 350, mounting frame; 351, venturi tube; 352, connecting pipe; 360, chamber; 361, filter membrane; 400, injection system; 410, extraction port; 420, extraction mechanism; 4 21. Impeller; 422. Rotating shaft; 430. Driving mechanism; 431. Fan blade; 432. First bevel gear; 433. Second bevel gear; 434. Guide portion; 440. Inner seat body; 441. Support portion; 442. Flow channel; 450. Diffuser; 451. Diffuser; 452. First spring; 510. Telescopic seat; 520. First end face tooth portion; 530. Second end face tooth portion; 540. Second spring; 550. First sealing ring. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0055] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0056] The following provides a detailed description of the embodiments of the present application through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0057] Embodiment 1:

[0058] like Figure 1-Figure 3 As shown, the embodiment of the present application provides a microbubble generating system for improving flotation quality, comprising:

[0059] A flotation machine 100, wherein the flotation machine 100 is provided with a flotation chamber 110, and a mineral slurry is placed in the flotation chamber 110;

[0060] A stirring device 200 is installed on the flotation machine 100, and the stirring device 200 is used to stir the mineral slurry in the flotation chamber 110;

[0061] A plurality of microbubble generators 300 are provided and installed at the bottom of the flotation chamber 110 , and the microbubble generators 300 spray microbubbles;

[0062] The injection system 400 is installed on the microbubble generator 300, and the injection system 400 is used to spray water and collide with bubbles;

[0063] Wherein, the microbubble generator 300 is connected to a gas source.

[0064] The mineral slurry is placed in the flotation chamber 110 of the flotation machine 100, and the microbubble generator 300 is connected to the air source to spray microbubbles into the mineral slurry. The microbubbles are combined with the mineral particles in the mineral slurry to achieve flotation separation. The mineral slurry is stirred by the stirring device 200 to increase the combination efficiency between the microbubbles and the mineral particles. However, when the general stirring device 200 disperses the microbubbles, the microbubbles need to float to a certain height before they can be fully dispersed by the stirring device 200. The combination efficiency of the mineral particles at the bottom of the flotation chamber 110 and the microbubbles is low. The injection system 400 can improve the dispersion effect of the microbubbles in a short time after they are sprayed from the microbubble generator 300, and can improve the combination efficiency of the mineral particles at the bottom of the flotation chamber 110 and the microbubbles. At the same time, the impact of the microbubbles splits them into smaller bubbles, which can increase the combination of the bubbles with more mineral particles and improve the flotation quality of the flotation machine 100.

[0065] Embodiment 2:

[0066] like Figure 2 As shown, the embodiment of the present application provides a microbubble generating system for improving flotation quality. In addition to the above technical features, the microbubble generator 300 further includes:

[0067] The nozzle housing 310 is provided with a flow channel 311;

[0068] The conical surface 320 is disposed at the end of the nozzle housing 310;

[0069] The first spray holes 330 are disposed on the conical surface 320. The first spray holes 330 are provided in a plurality and are evenly distributed. Microbubbles are sprayed out through the first spray holes 330.

[0070] The second spray hole 340 is used to spray the water flow driven by the spray system 400;

[0071] The axis of the second spray hole 340 is the same as the axis of the spray head housing 310 , and the axis of the first spray hole 330 is perpendicular to the conical surface 320 .

[0072] The nozzle housing 310 is installed at the bottom of the flotation chamber 110. By installing a plurality of first spray holes 330 on the conical surface 320, microbubbles are sprayed out through the first spray holes 330. The axis of the second spray hole 340 is the same as the axis of the nozzle housing 310. The injection system 400 extracts mineral slurry and sprays it through the second spray holes 340. Although the stirring device 200 can stir and flow the mineral slurry, a small amount of mineral particles may still be deposited at the bottom of the flotation chamber 110. These mineral particles are sprayed out through the second spray holes 340 through the injection system 400 to mix with the microbubbles sprayed out from the first spray holes 330, thereby improving the flotation quality of the flotation machine 100.

[0073] Embodiment 3:

[0074] like Figure 2 , Figure 3 As shown, the embodiment of the present application provides a microbubble generating system for improving flotation quality. In addition to the above technical features, the injection system 400 further includes:

[0075] The extraction ports 410 are provided in a plurality and distributed on the side wall of the nozzle housing 310 and adjacent to the bottom of the flotation chamber 110;

[0076] The extraction mechanism 420 is installed in the extraction port 410 and is used to extract the mixed water liquid at the bottom of the flotation chamber 110;

[0077] A driving mechanism 430 is installed on the nozzle housing 310, and the driving mechanism 430 is used to provide power to the extraction mechanism 420;

[0078] The inner seat body 440 is installed in the nozzle housing 310;

[0079] Among them, the inner seat body 440 is provided with a support portion 441, and the support portion 441 is connected to the inner wall surface of the nozzle housing 310. The second nozzle hole 340 is placed on the inner seat body 440. The support portion 441 is provided with a flow channel 442. The extraction port 410 and the second nozzle hole 340 are connected through the flow channel 442. The inner seat body 440 is provided with a diffuser 450 installed in the second nozzle hole 340. The axis of the diffuser 450 is the same as the axis of the second nozzle hole 340. The diffuser 450 extends from the inner seat body 440 along the axis of the second nozzle hole 340 to the outside of the nozzle housing 310. The diffuser 450 is provided with a diffuser 451 placed outside the nozzle housing 310, and the diameter of the diffuser 451 is larger than the diameter of the second nozzle hole 340.

[0080] The injection system 400 extracts the slurry at the bottom of the flotation chamber 110 through the extraction port 410. The extraction mechanism 420 generates suction to suck the slurry into the extraction port 410. The extracted slurry flows through the flow channel 442 of the support portion 441 to the second spray hole 340 for spraying. The extraction mechanism 420 is driven by the driving mechanism 430. The driving mechanism 430 is installed on the inner seat body 440 to improve the installation stability of the driving mechanism 430. The overall structural strength of the nozzle housing 310 is further improved through the support portion 441, and the connection stability among the driving mechanism 430, the extraction mechanism 420, and the inner seat body 440 is ensured. The diffuser 450 is installed in the second spray hole 340. All the slurry water sprayed from the second spray hole 340 hits the diffuser 451, so that the sprayed slurry water is scattered in all directions, thereby colliding with the microbubbles sprayed from the first spray hole 330. The mineral particles in the slurry are directly combined with the microbubbles. When other particles that cannot be combined hit the microbubbles, the microbubbles are split into smaller microbubbles, increasing the contact area between the microbubbles and the slurry, and improving the flotation efficiency. The impact of the slurry sprayed from the second spray hole 340 drives the microbubbles to scatter at the same time, so that a large number of microbubbles are evenly scattered at the bottom of the flotation chamber 110 to float the mineral particles.

[0081] Furthermore, the extraction mechanism 420 includes:

[0082] An impeller 421 is movably mounted on the extraction port 410;

[0083] The rotating shaft 422 is installed and connected with the impeller 421;

[0084] The rotating shaft 422 is driven by a driving mechanism 430 . The rotating shaft 422 is installed in a supporting portion 441 . The axis of the rotating shaft 422 is perpendicular to the axis of the inner seat body 440 .

[0085] The impeller 421 is connected to the driving structure via the rotating shaft 422 . When the impeller 421 rotates, the slurry is extracted and transported to the second spray hole 340 . The rotating shaft 422 is installed in the supporting part 441 and has high stability.

[0086] Furthermore, the driving mechanism 430 includes:

[0087] The fan blade 431 is placed in the circulation channel 311 and movably mounted on the inner seat body 440. When air flows in the circulation channel 311, the fan blade 431 rotates;

[0088] The first bevel gear 432 is installed and connected to the fan blade 431;

[0089] The second bevel gear 433 is mounted on the rotating shaft 422 and corresponds to the first bevel gear 432;

[0090] Wherein, the fan blade 431 is provided with a conical guide portion 434 .

[0091] When air flows in the circulation channel 311 , the fan blade 431 rotates, the first bevel gear 432 meshes with the second bevel gear 433 , and the rotation of the fan blade 431 causes the rotating shaft 422 to rotate, thereby driving the rotation of the impeller 421 , and improving the circulation stability of the gas in the circulation channel 311 through the guide portion 434 .

[0092] Furthermore, the diffuser 450 is provided with a first spring 452 , and the first spring 452 controls the diffuser 451 to move toward the second spray hole 340 .

[0093] Under normal conditions, the diffuser 450 blocks the second spray hole 340 through the first spring 452. When the injection pressure in the second spray hole 340 reaches a certain level, the diffuser 450 is pushed to move outward to open the second spray hole 340, thereby ensuring that the slurry sprayed from the second spray hole 340 has a certain impact force and that the microbubbles sprayed from the microbubble generator 300 can achieve a better diffusion effect.

[0094] Embodiment 4:

[0095] like Figure 3 , Figure 4 As shown, the embodiment of the present application provides a microbubble generating system for improving flotation quality. In addition to the above technical features, the nozzle housing 310 further includes:

[0096] The mounting frame 350 is mounted on the circulation channel 311 and the mounting position is close to the conical surface 320;

[0097] The venturi tube 351 is mounted on the mounting frame 350;

[0098] A connecting pipe 352, one end of which is connected to the venturi tube 351;

[0099] The inner seat body 440 is provided with a chamber 360 , the other end of the connecting pipe 352 is connected to the chamber 360 , and a filter membrane 361 is provided between the chamber 360 and the second spray hole 340 .

[0100] The mounting frame 350 is installed between the conical surface 320 and the circulation channel 311, and the venturi tube 351 is installed on the mounting frame 350. After passing through the venturi tube 351, the gas is sprayed out from the first spray hole 330 of the conical surface 320. The chamber 360 is arranged on the inner seat body 440. During the process of the slurry spraying out of the second spray hole 340, a small amount of pure water enters the chamber 360 through the filter membrane 361. The venturi tube 351 and the chamber 360 are connected by a connecting pipe 352. When the gas passes through the venturi tube 351, the pure water in the chamber 360 flows into the venturi tube 351 under the action of the pressure difference. The pure water is mixed with the air and sprayed out from the first spray hole 330, thereby improving the refinement degree of the bubbles when spraying out from the first spray hole 330, and further improving the flotation quality of the flotation machine 100.

[0101] Embodiment 5:

[0102] like Figure 3 , Figure 5 As shown, the embodiment of the present application provides a microbubble generating system for improving flotation quality. In addition to the above technical features, the extraction mechanism 420 is further provided with a vibration mechanism, and the vibration mechanism includes:

[0103] The telescopic seat 510 is installed between the impeller 421 and the rotating shaft 422;

[0104] The first end surface tooth portion 520 is mounted on the telescopic seat 510;

[0105] The second end face tooth portion 530 is mounted on the rotating shaft 422 and corresponds to the first end face tooth portion 520;

[0106] A second spring 540 is disposed between the first end face tooth portion 520 and the rotating shaft 422;

[0107] The first sealing ring 550 is disposed between the telescopic seat 510 and the nozzle housing 310 .

[0108] The mineral slurry is full of mineral particles. When there are many mineral particles deposited at the bottom of the flotation chamber 110, the impeller 421 often gets stuck during startup or rotation, so that the impeller 421 is connected to the rotating shaft 422 through the telescopic seat 510. When the impeller 421 is stuck and cannot rotate, the rotating shaft 422 and the telescopic seat 510 rotate relatively, so that the first end face tooth portion 520 and the second end face tooth portion 530 move with each other, and the impeller 421 is controlled to move along the axial direction, so that the stuck mineral particles fall off and the impeller 421 is restored to rotate. When the impeller 421 is not stuck, the first end face tooth portion 520 and the second end face tooth portion 530 are controlled to engage with each other through the second spring 540, and the rotating shaft 422 remains relatively stationary when rotating, and the sealing performance between the telescopic seat 510 and the nozzle housing 310 is ensured by the first sealing ring 550.

[0109] Embodiment 6:

[0110] The embodiment of the present application provides a microbubble generation system for improving flotation quality. In addition to the above technical features, the specific working steps include:

[0111] S1, the microbubble generator 300 is connected to a gas source, and microbubbles are sprayed from the first spray hole 330;

[0112] S2, when the airflow flows in the flow channel 311 of the microbubble generator 300, it drives the fan blade 431 to rotate, drives the extraction mechanism 420 to extract the mixed liquid at the bottom of the flotation chamber 110, and sprays the mixed liquid mixed with mineral particles from the second spray hole 340 through the injection system 400, colliding with the microbubbles sprayed from the first spray hole 330.

[0113] After the microbubble generator 300 sprays the microbubbles through the first spray hole 330, it sprays the mineral slurry through the second spray hole 340. The mineral slurry impacts the microbubbles, thereby refining the microbubbles into smaller bubbles and simultaneously impacting the microbubbles to diffuse, so that the microbubbles can be fully dispersed at the bottom of the flotation chamber 110, thereby improving the flotation quality and efficiency of the microbubbles.

[0114] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0115] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A microbubble generating system for improving flotation quality, characterized in that: include: A flotation machine (100), wherein the flotation machine (100) is provided with a flotation chamber (110), and a mineral slurry is placed in the flotation chamber (110); A stirring device (200) is installed on the flotation machine (100), and the stirring device (200) is used to stir the mineral slurry in the flotation chamber (110); A plurality of microbubble generators (300) are provided and installed at the bottom of the flotation chamber (110), and the microbubble generators (300) spray out microbubbles; An injection system (400) is installed on the microbubble generator (300), and the injection system (400) is used to spray water and collide with bubbles; Wherein, the microbubble generator (300) is connected to a gas source; The microbubble generator (300) comprises: The nozzle housing (310) is provided with a circulation channel (311); A conical surface (320) is disposed at the end of the nozzle housing (310); A first spray hole (330) is disposed on the conical surface (320); a plurality of the first spray holes (330) are provided and are evenly distributed; microbubbles are sprayed out through the first spray holes (330); A second spray hole (340) for spraying a water flow driven by the spray system (400); The axis of the second spray hole (340) is the same as the axis of the spray head housing (310), and the axis of the first spray hole (330) is perpendicular to the conical surface (320); The injection system (400) comprises: A plurality of extraction ports (410) are provided and distributed on the side wall of the nozzle housing (310) and are adjacent to the bottom of the flotation chamber (110); An extraction mechanism (420) is installed in the extraction port (410) and is used to extract the mixed water liquid at the bottom of the flotation chamber (110); A driving mechanism (430) is mounted on the nozzle housing (310), wherein the driving mechanism (430) is used to provide power to the extraction mechanism (420); An inner seat body (440) is installed in the nozzle housing (310); The inner seat body (440) is provided with a support portion (441), the support portion (441) is connected to the inner wall surface of the nozzle housing (310), the second spray hole (340) is placed on the inner seat body (440), the support portion (441) is provided with a flow channel (442), the extraction port (410) and the second spray hole (340) are connected via the flow channel (442), and the inner seat body (440) is provided with a second spray hole (340) installed on the second spray hole (3 40), the axis of the diffuser (450) is the same as the axis of the second spray hole (340), the diffuser (450) extends from the inner seat (440) along the axis of the second spray hole (340) to the outside of the spray head housing (310), the diffuser (450) is provided with a diffuser portion (451) disposed outside the spray head housing (310), and the diameter of the diffuser portion (451) is greater than the diameter of the second spray hole (340).

2. The microbubble generating system for improving flotation quality according to claim 1, characterized in that: The extraction mechanism (420) comprises: An impeller (421) movably mounted on the extraction port (410); A rotating shaft (422) is mounted and connected to the impeller (421); The rotating shaft (422) is driven by a driving mechanism (430), the rotating shaft (422) is installed in the supporting portion (441), and the axis of the rotating shaft (422) is perpendicular to the axis of the inner seat body (440).

3. The microbubble generating system for improving flotation quality according to claim 2, characterized in that: The driving mechanism (430) comprises: The fan blade (431) is placed in the circulation channel (311) and is movably mounted on the inner seat body (440). When air flows in the circulation channel (311), the fan blade (431) rotates; The first bevel gear (432) is mounted and connected to the fan blade (431); A second bevel gear (433) is mounted on the rotating shaft (422) and corresponds to the first bevel gear (432); Wherein, the fan blade (431) is provided with a conical flow guide portion (434).

4. The microbubble generating system for improving flotation quality according to claim 1, characterized in that: The nozzle housing (310) comprises: A mounting frame (350) is mounted on the circulation channel (311), and the mounting position is close to the conical surface (320); A venturi tube (351) is mounted on a mounting frame (350); A connecting pipe (352), one end of which is connected to the venturi tube (351); The inner seat body (440) is provided with a chamber (360), the other end of the connecting pipe (352) is connected to the chamber (360), and a filter membrane (361) is provided between the chamber (360) and the second spray hole (340).

5. The microbubble generating system for improving flotation quality according to claim 1, characterized in that: The diffuser (450) is provided with a first spring (452), and the first spring (452) controls the diffuser (451) to move in the direction of the second spray hole (340).

6. The microbubble generating system for improving flotation quality according to any one of claims 3 to 5, characterized in that: The specific work steps include: S1, the microbubble generator (300) is connected to a gas source, and microbubbles are ejected from the first spray hole (330); S2, when the airflow flows through the circulation channel (311) of the microbubble generator (300), the fan blade (431) is driven to rotate, driving the extraction mechanism (420) to extract the mixed liquid at the bottom of the flotation chamber (110), and the mixed liquid mixed with mineral particles is sprayed out from the second spray hole (340) through the spray system (400), and collides with the microbubbles sprayed from the first spray hole (330).

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