Vacuum suction flotation foam mechanical crushing device

Abstract

The utility model discloses a vacuum suction flotation foam mechanical crushing device which comprises a buffer tank, a defoaming tank and a vacuum device, the defoaming tank is arranged beside the buffer tank and communicated with the buffer tank through an air suction pipe, and the vacuum device is communicated to the defoaming tank and located on the opposite side of the air suction pipe. The side wall of the upper end part of the buffer tank is provided with a feed port, the bottom of the buffer tank is provided with a liquid outlet, the top end of the buffer tank is also provided with at least one air suction port, the upper end of the air suction port is connected with the inlet end of an air suction pipe, and the outlet end of the air suction pipe is communicated with the defoaming tank; a rotary blade driven by a driving motor is mounted in the defoaming tank, a discharge port is formed in the bottom of the defoaming tank, and an exhaust port is formed in the top of the defoaming tank. The flotation tank is simple in structure and reasonable in design, the retention time of foam in the tank body is effectively shortened, and the flotation efficiency is improved; the foam elimination strengthening effect is achieved, and a certain reference is provided for solving the problem that flotation concentrate foam is difficult to eliminate; cost is saved, production safety is guaranteed, and production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of defoaming technology in flotation processes for metallic and non-metallic minerals, and specifically to a vacuum suction flotation foam mechanical crushing device. Background Technology

[0002] Flotation is a key separation technology widely used in many fields such as mining and chemical engineering. It involves adding a frother to a slurry or other system to generate a large amount of stable foam, which allows the target mineral particles to adhere to the foam and achieve separation. However, flotation foam is usually stable and difficult to eliminate. Foam accumulation can have many problems, such as reducing the effective volume of the flotation cell, affecting the material transport in subsequent pipelines, causing pump surging, and easily leading to cavitation, which can reduce the service life of the pump. In addition, foam accumulation seriously affects the production environment and production safety.

[0003] Currently, the main defoaming methods in flotation include natural defoaming, chemical defoaming, and mechanical defoaming. Natural defoaming has a long cycle time; chemical defoaming reduces foam surface tension by adding defoaming agents to break it up, but this method is costly and may pollute the environment; mechanical defoaming uses external forces, such as stirring, centrifugation, and scraping, to break up the foam. This method is simple to operate and does not introduce other chemicals, but the defoaming effect is short-lived and its effectiveness in processing large quantities of stable foam is limited. Therefore, it is necessary to design a highly efficient defoaming device to enhance the defoaming effect and ensure production safety. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the existing technology and provide a vacuum suction flotation foam mechanical crushing device.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a vacuum suction flotation foam mechanical crushing device, including a buffer tank, a defoaming tank, and a vacuum device, wherein the defoaming tank is placed beside the buffer tank and connected to it through a suction pipe, and the vacuum device is connected to the defoaming tank and located on the opposite side of the suction pipe; the upper end side wall of the buffer tank is provided with a feed inlet and the bottom of the buffer tank is provided with a drain outlet, the top of the buffer tank is provided with at least one suction port, the upper end of the suction port is connected to the inlet end of the suction pipe, and the outlet end of the suction pipe is connected to the defoaming tank; the defoaming tank is equipped with a rotating blade driven by a drive motor, the bottom of the defoaming tank is provided with a discharge port, and the top of the defoaming tank is provided with an exhaust port.

[0006] Furthermore, the vacuum device is a fan or vacuum pump, which is connected to the defoaming tank through a corresponding suction pipe. It is located on the opposite side of the suction pipe, and the inlet of the suction pipe is higher than the horizontal height of the outlet of the suction pipe.

[0007] Furthermore, the inlet end of the suction tube extends into the defoaming tank and bends upward, and a protective mesh cover can be detachably installed at the inlet end of the suction tube.

[0008] Furthermore, the bottom of the buffer tank is sloped, and the drain outlet is located at the lowest point of the bottom plate of the buffer tank. Its outer end is connected to a drain pipe, and a control valve is installed on the drain pipe. The bottom of the defoaming tank is sloped, and the discharge outlet is located at the lowest point of the bottom plate of the defoaming tank. Its outer end is connected to a discharge pipe, and a control valve is installed on the discharge pipe.

[0009] Furthermore, a level gauge is installed on the wall of the buffer tank, which can monitor the liquid level in the buffer tank in real time and is connected to the first PLC control module. The first control valve is also connected to the first PLC control module. A level gauge is installed on the wall of the defoaming tank, which can monitor the liquid level in the defoaming tank in real time and is connected to the second PLC control module. The second control valve is also connected to the second PLC control module.

[0010] Furthermore, when level gauge one detects that the liquid level in the buffer tank has risen to the set height, the signal is fed back to PLC control module one, and then control valve one is opened, with each discharge time being 60 seconds; when level gauge two detects that the liquid level in the defoaming tank has risen to the set height, the signal is fed back to PLC control module two, and then control valve two is opened, with each discharge time being 60 seconds.

[0011] Furthermore, the inner wall of the suction pipe is provided with irregularly arranged needle-like protrusions.

[0012] Furthermore, the top of the buffer groove is provided with four air inlets, which are evenly arranged. Each air inlet has an outward flared structure, and its outlet end is connected to the inlet end of the air inlet pipe.

[0013] Furthermore, the drive motor is installed at the top of the defoaming tank, and its output end is connected to a rotating shaft. The rotating shaft passes through the top of the defoaming tank and extends into its interior, located on the vertical central axis of the defoaming tank. The aforementioned rotating blade is fixedly installed at the lower end of the rotating shaft.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention has a simple structure and reasonable design, which effectively reduces the residence time of foam in the tank, increases flotation efficiency and mineral processing recovery rate; it also has the function of defoaming, thereby achieving the purpose of strengthening foam elimination, and providing a certain reference for solving the problem of difficult foam elimination in flotation concentrate; it saves costs, ensures production safety, and thus improves production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the suction pipe in this utility model;

[0017] Figure 3 for Figure 2 Side view of the central suction duct;

[0018] In the diagram: 1. Buffer tank, 2. Defoaming tank, 3. Vacuum device, 4. Suction pipe, 5. Suction port, 6. Rotating blade, 7. Rotating shaft, 8. Drive motor, 9. Suction pipe, 10. Protective mesh cover, 11. Feed inlet, 12. Drain outlet, 13. Buffer tank bottom plate, 14. Control valve one, 15. PLC control module one, 16. Level gauge one, 21. Discharge port, 22. Exhaust port, 23. Defoaming tank bottom plate, 24. Control valve two, 25. PLC control module two, 26. Level gauge two, 41. Outlet end, 42. Needle-shaped protrusion. Detailed Implementation

[0019] It should be noted that in the description of this utility model, terms such as "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "coaxial", "side", "one end", and "the other end" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are only used to facilitate the description of the structural relationship between the components in this utility model and do not specifically mean that any component in this utility model must have a specific orientation, be constructed and operated in a specific orientation, or be construed as a limitation on this utility model.

[0020] Furthermore, in this utility model, descriptions such as "first," "second," "number one," and "number two" are for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the utility model. They are merely used to distinguish components or operations described using the same technical terms. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0022] like Figure 1As shown, a vacuum suction flotation foam mechanical crushing device includes a buffer tank 1, a defoaming tank 2, and a vacuum device 3. The defoaming tank 2 is located beside the buffer tank 1 and connected to the buffer tank 1 via a suction pipe 4. The vacuum device 3 is connected to the defoaming tank 2 and located on the opposite side of the suction pipe 4. The upper side wall of the buffer tank 1 has a feed inlet 11, and its bottom plate has a sloping structure. A drain outlet 12 is located at the lowest point of the bottom plate 13 of the buffer tank. A drain pipe is connected to the outside of the drain outlet 12, and a control valve 14 is installed on the drain pipe. The control valve 14 is connected to a PLC control module 15 via a signal or line. Simultaneously, a level gauge 16 is installed on the side wall of the buffer tank 1. The level gauge is designed according to the actual liquid level requirements and can monitor the liquid level in the buffer tank 1 in real time. The level gauge 16 is also connected to the PLC control module 15 via a line or signal, and is linked with the control valve 14. The top of the buffer tank 1 is equipped with four suction ports 5, evenly arranged among each other. Each port has an outward-flaring structure, maximizing the coverage of the liquid within the buffer tank 1 and enabling the suction of accumulated high-level air bubbles. The outer ends of the four suction ports 5 converge and connect to the inlet end of the suction pipe 4, combining... Figure 2 and Figure 3 As shown, the inner wall of the suction pipe 4 is provided with irregularly arranged needle-like protrusions 42. When the high-level bubbles are sucked through the suction pipe 4, they are initially broken up. The outlet end 41 of the suction pipe 4 is inserted and connected to the side wall of the upper end of the defoaming tank 2 and sealed thereto. The outlet end 41 of the suction pipe 4 inserted into the defoaming tank 2 is bent downward.

[0023] The structure of the defoaming tank 2 is roughly similar to that of the buffer tank 1. Its bottom plate is also sloping. A discharge port 21 is provided at the lowest point of the bottom plate 23 of the defoaming tank. A discharge pipe is connected to the outside of the discharge port 21, and a control valve 24 is installed on the discharge pipe. The control valve 24 is connected to the second PLC control module 25 via signal or line. At the same time, a level gauge 26 is installed on the side wall of the defoaming tank 2. Its height is designed according to the actual liquid level bearing requirements, and it can monitor the liquid level in the defoaming tank 2 in real time. The level gauge 26 is also connected to the second PLC control module 25 via line or signal, and is linked with the control valve 24. The top of the defoaming tank 2 is provided with an exhaust port 22; a drive motor 8 is also fixedly installed on the outer side of the top of the defoaming tank 2, and its output end is connected to a rotating shaft 7. The rotating shaft 7 is inserted into the defoaming tank 2 from the center position of the top of the defoaming tank 2, located on its vertical central axis, and is rotatably connected to the defoaming tank 2. A rotating blade 6 is fixedly installed at the bottom end of the rotating shaft 7.

[0024] The vacuum device 3 described above uses a fan or vacuum pump, and its suction end is equipped with a matching suction pipe 9. The suction end of the suction pipe 9 is connected to the defoaming tank 2, and its installation position is located on the opposite side of the outlet end 41 of the suction pipe 4. The suction end of the suction pipe 9 is bent upward, and its height is higher than the horizontal height of the outlet end 41 of the suction pipe 4. Furthermore, the suction end of the suction pipe 9 is detachably equipped with a protective mesh cover 10 to prevent debris from entering the vacuum device 3.

[0025] The specific operating principle is as follows: The incoming material carrying flotation bubbles is first injected into the buffer tank 1 through the feed inlet 11 and accumulates at the bottom. The bubbles accumulate on the liquid surface. When the liquid reaches the set height monitored by the liquid level gauge 16, the signal is fed back to the PLC control module 15, and the control valve 14 is opened to discharge the material through the drain pipe. The slope structure of the bottom plate 13 of the buffer tank facilitates the discharge of the liquid. Each discharge takes 60 seconds. When the incoming material is injected into the buffer tank 1, the aforementioned vacuum device 3 is activated. Through the suction pipe 9, a low-pressure zone is created inside the defoaming tank 2, generating strong suction. The flotation bubbles at a high position in the buffer tank 1 are drawn into the defoaming tank 2 via the suction pipe 4 and the suction port 5. Because the inner wall of the suction pipe 4 has needle-like protrusions 42, the flotation foam undergoes initial breakage as it flows through the suction pipe 4. Subsequently, the fine foam enters the defoaming tank 2 and is discharged downwards through the downward-bent outlet end 41 of the suction pipe 4. At this time, the drive motor 8 operates, driving the rotating blades via the rotating shaft 7. The blade 6 rotates at high speed, and the bubbles that are not completely broken are further broken by the shearing action of the rotating blade 6. The broken gas is discharged through the exhaust port 22 on the defoaming tank 2. The broken solid-liquid two-phase mixture accumulates at the bottom of the defoaming tank 2. When its accumulation height reaches the set height monitored by the liquid level gauge 26, the signal is fed back to the second PLC control module 25, and the second control valve 24 is opened to discharge the liquid through the discharge port 21. The slope structure of the bottom plate 23 of the defoaming tank is designed to facilitate the discharge of the liquid, and the discharge time is also 60 seconds each time.

[0026] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A vacuum suction floatation froth mechanical breaking device, characterized by: The device includes a buffer tank, a defoaming tank, and a vacuum device. The defoaming tank is located beside the buffer tank and connected to it via a suction pipe. The vacuum device is connected to the defoaming tank and located on the opposite side of the suction pipe. The buffer tank has a feed inlet on its upper side wall and a drain outlet at its bottom. The top of the buffer tank has at least one suction port, the upper end of which is connected to the inlet end of the suction pipe. The outlet end of the suction pipe is connected to the defoaming tank. The defoaming tank is equipped with a rotating blade driven by a drive motor. The bottom of the defoaming tank has a discharge port, and the top has an exhaust port.

2. A mechanical froth breaking device for a vacuum suction flotation cell according to claim 1, characterized in that: The vacuum device is a fan or vacuum pump, which is connected to the defoaming tank through a corresponding suction pipe. It is located on the opposite side of the suction pipe, and the inlet of the suction pipe is higher than the horizontal height of the outlet of the suction pipe.

3. A vacuum suction flotation froth mechanical breaking device according to claim 2, characterized in that: The inlet end of the suction tube extends into the defoaming tank and bends upward. A protective mesh cover can be detachably installed at the inlet end of the suction tube.

4. A mechanical froth breaking device for a vacuum suction flotation cell according to claim 1, characterized in that: The bottom of the buffer tank is sloped, and the drain outlet is located at the lowest point of the bottom plate of the buffer tank. Its outer end is connected to a drain pipe, and a control valve is installed on the drain pipe. The bottom of the defoaming tank is sloped, and the discharge outlet is located at the lowest point of the bottom plate of the defoaming tank. Its outer end is connected to a discharge pipe, and a control valve is installed on the discharge pipe.

5. A vacuum suction flotation froth mechanical breaking device according to claim 4, characterized in that: A level gauge is installed on the wall of the buffer tank, which can monitor the liquid level in the buffer tank in real time and is connected to PLC control module 1. The control valve 1 mentioned above is also connected to PLC control module 1. A level gauge is installed on the wall of the defoaming tank, which can monitor the liquid level in the defoaming tank in real time and is connected to PLC control module 2. The control valve 2 mentioned above is also connected to PLC control module 2.

6. A vacuum suction flotation froth mechanical breaking device according to claim 5, characterized in that: When level gauge 1 detects that the liquid level in the buffer tank has risen to the set height, the signal is fed back to PLC control module 1, and then control valve 1 is opened, with each discharge lasting 60 seconds; when level gauge 2 detects that the liquid level in the defoaming tank has risen to the set height, the signal is fed back to PLC control module 2, and then control valve 2 is opened, with each discharge lasting 60 seconds.

7. The vacuum suction flotation foam mechanical crushing device according to claim 1, characterized in that: The inner wall of the air intake pipe is provided with irregularly arranged needle-like protrusions.

8. A vacuum suction floatation froth mechanical breaking device according to claim 1, characterized in that: The top of the buffer tank is provided with four air inlets, which are evenly arranged. Each air inlet has an outward flared structure, and its outlet end is connected to the inlet end of the air inlet pipe.

9. A vacuum suction floatation froth mechanical breaking device according to claim 1, characterized in that: The drive motor is installed at the top of the defoaming tank, and its output end is connected to a rotating shaft. The rotating shaft passes through the top of the defoaming tank and extends into its interior, located on the vertical central axis of the defoaming tank. The rotating blade is fixedly installed at the lower end of the rotating shaft.

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