Flotation concentrate foam flow velocity detection device and method

Abstract

The invention discloses a flotation concentrate foam flowing speed detection device and method.The flotation concentrate foam flowing speed detection device comprises a tank body, an air inflation stirring device, a material pushing device, a foam scraping device, an ultrasonic detection device and a receiving tank, the air inflation stirring device, the material pushing device and the foam scraping device are sequentially arranged in the flotation flowing direction, the pushing end of the pushing device moves annularly in the flotation flowing direction, so that foam is broken when the pushing end is located on the lower portion, and the pushing end is separated from the foam when the pushing end is located on the upper portion; the ultrasonic detection device is arranged between the pushing device and the foam scraping device so as to detect the foam flowing speed; the receiving tank is arranged at the discharging end of the tank body and is used for receiving foam scraped by the foam scraping device; the material pushing device and the ultrasonic detection device are electrically connected with the controller. The foam flow velocity is measured through the ultrasonic detection device, and the position and the working state of the pushing end of the pushing device are accurately adjusted through the controller according to the flow velocity value, so that the foam is more uniform, and the detection precision is improved.

Description

Technical Field

[0001] This application relates to the technical field of coal flotation, and particularly to a device and method for detecting the flow velocity of flotation concentrate foam. Background Art

[0002] In the field of flotation concentrate production, accurately controlling the foam flow velocity plays a decisive role in optimizing the flotation process, improving the quality of concentrate, and production efficiency.

[0003] Currently, ultrasonic detection devices are commonly used for detecting foam flow velocity. However, due to the complex and variable state of foam during the flotation process, with a mixture of large and small bubbles and uneven foam layer thickness, this non-uniformity greatly interferes with the propagation of ultrasonic waves. When ultrasonic waves propagate in non-uniform foam, phenomena such as scattering and refraction occur, resulting in an increase in the measurement error of the propagation time, and further causing a significant deviation in the flow velocity data calculated based on the propagation time difference, making it difficult to accurately reflect the actual foam flow velocity.

[0004] In addition, existing detection devices have a single function. Even if the foam flow velocity changes are detected, there is a lack of an effective control mechanism between the devices. When the flow velocity is abnormal, the working states of relevant components cannot be adjusted in a timely and intelligent manner. Summary of the Invention

[0005] This application aims to solve at least one of the technical problems in the above technologies to a certain extent.

[0006] To achieve the above object, a first aspect of this application proposes a device for detecting the flow velocity of flotation concentrate foam, including: a trough, an air injection and stirring device, a material pushing device, a foam scraping device, an ultrasonic detection device, and a receiving trough. Among them, the air injection and stirring device, the material pushing device, and the foam scraping device are arranged in sequence along the flotation flow direction. Among them, the material pushing end of the material pushing device moves in a circular shape along the flotation flow direction, so as to break the foam when the material pushing end is below, and separate from the foam when the material pushing end is above; the ultrasonic detection device is arranged between the material pushing device and the foam scraping device to detect the foam flow velocity; the receiving trough is arranged at the discharge end of the trough to receive the foam scraped by the foam scraping device; among them, the material pushing device and the ultrasonic detection device are electrically connected to a controller respectively.

[0007] In addition, the device for detecting the flow velocity of flotation concentrate foam proposed above according to this application may also have the following additional technical features:

[0008] As a further description of the above technical solution: The air inflation stirring device includes a first driving motor, a transmission structure, a main shaft sleeve, an impeller and an air inlet pipe. Among them, the first driving motor and the main shaft sleeve are both arranged on the tank body through mounting brackets; the impeller is connected to the main shaft, the main shaft passes through the bearing in the main shaft sleeve and extends upward, and is connected to the first driving motor through the transmission structure; an air inlet cavity is arranged at the lower part of the main shaft sleeve, the air inlet pipe is communicated with the air inlet cavity, and the air inlet pipe is connected to an external air pump.

[0009] As a further description of the above technical solution: The pusher device includes a second driving motor, a sprocket structure and a grid plate. Among them, the two sprocket structures are respectively arranged on both sides of the tank body; the grid plate is arranged in the tank body, and both ends of the grid plate are respectively connected to the movable ends of the corresponding sprocket structures through connecting blocks; the second driving motor is arranged on the tank body and is connected to one of the sprocket structures.

[0010] As a further description of the above technical solution: Sharp spikes are arranged on the grid plate.

[0011] As a further description of the above technical solution: The foam scraping device includes a third driving motor, a rotating shaft and a scraper. Among them, the rotating shaft is rotatably arranged at the discharge end of the tank body; the third driving motor is arranged on the tank body and is connected to the rotating end of the rotating shaft; the scraper is connected to the rotating shaft through a connecting plate to scrape the foam from the discharge end of the tank body into the receiving tank.

[0012] As a further description of the above technical solution: The ultrasonic detection device includes two ultrasonic transducers. Among them, the two ultrasonic transducers are arranged on both sides of the tank body in a staggered manner along the flotation flow direction to record the propagation time difference of ultrasonic waves in the downstream and upstream directions.

[0013] As a further description of the above technical solution: The bottom of the receiving tank is an inclined table surface.

[0014] To achieve the above object, a method for using a device for detecting the flow velocity of flotation concentrate foam according to the second aspect of the present application is proposed, including starting the air inflation stirring device to generate and maintain foam in the tank body; using the ultrasonic detection device to measure the propagation time difference of ultrasonic waves in the downstream and upstream directions; the controller calculates the flow velocity value according to the time difference, and adjusts the position and working state of the pusher end of the pusher device according to the flow velocity value; the foam scraping device scrapes the foam from the discharge end of the tank body into the receiving tank.

[0015] As a further description of the above technical solution: The controller calculates the flow velocity value based on the time difference, and adjusts the position and working state of the pushing end of the material pushing device according to the flow velocity value, including: The controller obtains the time difference data and calculates the flow velocity value according to the built-in calculation formula; if the flow velocity value exceeds the maximum value of the flow velocity preset range of the controller, the controller controls the second driving motor to move the grid plate downward and stop, so as to block and break the foam; if the flow velocity value is within the flow velocity preset range of the controller, the controller controls the second driving motor to move the grid plate upward and stop, so as to avoid hindering the flow of the foam; if the flow velocity value is lower than the minimum value of the flow velocity preset range of the controller, the controller controls the second driving motor to make the grid plate move continuously along the ring, so as to push the foam towards the foam scraping device while breaking the large foam.

[0016] According to the flotation concentrate foam flow velocity detection device and method of the present application, the ultrasonic detection device is used to measure the foam flow velocity, and the controller is used to accurately adjust the position and working state of the pushing end of the material pushing device according to the flow velocity value. When the flow velocity is too fast, the pushing end moves downward and stops, effectively blocking the foam, reducing the flow velocity, and at the same time breaking the large foam, reducing the influence of the large foam interference on the detection accuracy, ensuring that the detection data more accurately reflects the actual foam flow velocity, and providing a reliable basis for the precise control of the flotation process; when there are more large foams or the foam scraping speed is slow, the pushing end of the material pushing device moves continuously along the ring, pushing the foam towards the foam scraping device, making the foam closer to the discharge end, greatly facilitating the work of the foam scraping device, significantly improving the foam scraping efficiency. At the same time, the large foam is broken during the pushing process, making the foam state more uniform, which not only helps the foam scraping device to scrape out the foam more thoroughly, improving the foam scraping quality, but also makes the foam more uniform, improving the detection accuracy.

[0017] Some of the additional aspects and advantages of the present application will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present application. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0019] Figure 1 is a schematic structural diagram of a flotation concentrate foam flow velocity detection device according to an embodiment of the present application;

[0020] Figure 2 is an internal structural diagram of a flotation concentrate foam flow velocity detection device according to an embodiment of the present application;

[0021] Figure 3 is a schematic side view structural diagram of a flotation concentrate foam flow velocity detection device according to an embodiment of the present application;

[0022] Figure 4 is a schematic structural diagram of a pusher device according to an embodiment of the present application;

[0023] Figure 5 is a schematic internal structure diagram of an aeration stirring device according to an embodiment of the present application;

[0024] Figure 6 is a schematic installation structure diagram of an ultrasonic detection device and a tank body according to an embodiment of the present application;

[0025] Figure 7 is a schematic structural diagram of a foam scraping device according to an embodiment of the present application;

[0026] Figure 8 is a flowchart of the usage method of a flotation concentrate foam flow velocity detection device according to an embodiment of the present application;

[0027] As shown in the figure:

[0028] 100, tank body; 101, mounting frame; 200, aeration stirring device; 210, first drive motor; 220, transmission structure; 230, main shaft sleeve; 231, air inlet cavity; 240, impeller; 250, air inlet pipe; 300, pusher device; 310, second drive motor; 320, sprocket structure; 330, grid plate; 301, connecting block; 400, foam scraping device; 410, third drive motor; 420, rotating shaft; 430, scraper; 401, connecting plate; 500, ultrasonic detection device; 600, receiving tank. Detailed Embodiments

[0029] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application.

[0030] The flotation concentrate foam flow velocity detection device of the embodiments of the present application will be described below with reference to the accompanying drawings.

[0031] As Figure 1 shown, the flotation concentrate foam flow velocity detection device of the embodiments of the present application may include a tank body 100, an aeration stirring device 200, a pusher device 300, a foam scraping device 400, an ultrasonic detection device 500, and a receiving tank 600.

[0032] Among them, the pneumatic stirring device 200, the pusher device 300, and the foam scraping device 400 are arranged in sequence along the flotation flow direction. Among them, the pusher end of the pusher device 300 moves in a circular shape along the flotation flow direction to break the foam when the pusher end is located below, and separate from the foam when the pusher end is located above.

[0033] The ultrasonic detection device 500 is arranged between the pusher device 300 and the foam scraping device 400 to detect the foam flow velocity. The receiving tank 600 is arranged at the discharge end of the tank body 100 to receive the foam scraped by the foam scraping device 400.

[0034] Among them, the pusher device 300 and the ultrasonic detection device 500 are respectively electrically connected to the controller.

[0035] To clearly illustrate the previous embodiment, in an embodiment of the present application, as Figure 4 shown, the pusher device 300 includes a second drive motor 310, a sprocket structure 320, and a grid plate 330.

[0036] Among them, two sprocket structures 320 are respectively arranged on both sides of the tank body 100. The grid plate 330 is arranged inside the tank body 100, and both ends of the grid plate 330 are respectively connected to the moving ends of the corresponding sprocket structures 320 through connecting blocks 301. The second drive motor 310 is arranged on the tank body 100 and connected to one of the sprocket structures 320.

[0037] It should be noted that the grid plate 330 moves in a circular shape following the sprocket structure 320. When moving below the sprocket structure 320, it can block the foam, and when moving above the sprocket structure 320, it no longer blocks the foam.

[0038] To clearly illustrate the previous embodiment, in an embodiment of the present application, as Figure 6 shown, the ultrasonic detection device 500 includes two ultrasonic transducers. Among them, the two ultrasonic transducers are respectively arranged on both sides of the tank body 100 in a staggered manner along the flotation flow direction to record the propagation time difference of ultrasonic waves in the downstream and upstream directions.

[0039] It should be noted that the connection line of the two ultrasonic transducers is not perpendicular to the foam flow direction to facilitate the detection of the downstream and upstream of the two ultrasonic transducers.

[0040] It is understandable that when the ultrasonic detection device 500 is working, one of the ultrasonic transducers emits ultrasonic waves, which propagate in the foam. The other ultrasonic transducer receives the signal. Since the foam is in a flowing state, the propagation speeds of the ultrasonic waves in the downstream and upstream directions are different. By recording the propagation time difference in these two directions and combining with the calculation formula, the flow velocity of the foam can be calculated. This detection method based on the time difference method can effectively reduce the detection error caused by the non-uniformity of the foam compared with the traditional detection means, and greatly improve the detection accuracy.

[0041] Specifically, when the relevant staff perform flotation on the concentrate, first pour the concentrate into the tank body 100, and then start the aeration and stirring device 200. The gas is fully mixed with the flotation liquid in the tank body 100 to continuously generate and maintain foam.

[0042] Then start the ultrasonic detection device 500. The two ultrasonic transducers start to work. One of the ultrasonic transducers emits ultrasonic waves, which propagate in the foam in the downstream and upstream directions. The other ultrasonic transducer receives the signal. By recording the propagation time difference of the ultrasonic waves in the downstream and upstream directions, the ultrasonic detection device 500 transmits this data to the controller in real time. The controller calculates the flow velocity value of the foam according to the built-in calculation formula.

[0043] The controller compares and analyzes the calculated flow velocity value with the preset flow velocity range. If the flow velocity value exceeds the maximum value of the preset flow velocity range, the controller controls the second drive motor 310 to make the sprocket structure 320 operate, driving the grid plate 330 to move downward and stop at the specified position. At this time, the grid plate 330 blocks the foam to reduce the foam flow velocity. At the same time, the blocking effect of the grid plate 330 can break large foam to reduce the interference to the detection accuracy. If the flow velocity value is within the preset flow velocity range, the controller controls the second drive motor 310 to make the grid plate 330 move upward and stop to avoid hindering the foam flow. If the flow velocity value is lower than the minimum value of the preset flow velocity range, the controller controls the second drive motor 310 to make the grid plate 330 move continuously along the ring, pushing the foam towards the scraping device 400 during the movement, and at the same time breaking large foam to promote the foam to move towards the discharge end.

[0044] Then the scraping device 400 scrapes the foam that has been processed and detected from the discharge end of the tank body 100, and the scraped foam falls into the receiving tank 600.

[0045] During the whole flotation process, the ultrasonic detection device 500 continuously monitors the foam flow velocity and transmits the real-time data to the controller. The controller continuously adjusts the working state of the pushing device 300 according to the flow velocity change to ensure that the foam flow velocity is always within a reasonable range, and guarantee the efficient and stable operation of the flotation concentrate production.

[0046] As a possible scenario, the grid plate 330 is provided with sharp spikes, and when large bubbles pass through the grid plate 330 , the spikes can quickly pierce the large bubbles to provide more uniform small bubbles, thereby improving the accuracy of subsequent detection.

[0047] In one embodiment of the present application, Figure 2 and Figure 5 As shown, the aeration stirring device 200 includes a first driving motor 210 , a transmission structure 220 , a main shaft sleeve 230 , an impeller 240 and an air inlet pipe 250 .

[0048] Among them, the first drive motor 210 and the main shaft sleeve 230 are both arranged on the trough body 100 through the mounting frame 101, the impeller 240 is connected to the main shaft, the main shaft extends upward through the bearing in the main shaft sleeve 230, and is connected to the first drive motor 210 through the transmission structure 220, and an air intake chamber 231 is arranged at the lower part of the main shaft sleeve 230, the air intake pipe 250 is connected to the air intake chamber 231, and the air intake pipe 250 is connected to an external air pump.

[0049] It should be noted that when the aerated stirring device 200 is working, the first drive motor 210 drives the main shaft connected to the impeller 240 through the transmission structure 220, causing the main shaft to rotate at high speed, thereby driving the impeller 240 to rotate at high speed in the tank body 100. At the same time, the external air pump transports the gas to the air inlet chamber 231 at the lower part of the main shaft sleeve 230 through the air inlet pipe 250. Under the suction and stirring force generated by the high-speed rotation of the impeller 240, the gas in the air inlet chamber 231 is drawn into the flotation liquid to form a large amount of uniform and stable foam, which provides a basis for subsequent detection and processing procedures.

[0050] In one embodiment of the present application, Figure 7 As shown, the foam scraping device 400 includes a third driving motor 410 , a rotating shaft 420 and a scraper 430 .

[0051] Among them, the rotating shaft 420 can be rotatably set at the discharge end of the trough body 100, the third driving motor 410 is set on the trough body 100 and connected to the rotating end of the rotating shaft 420, and the scraper 430 is connected to the rotating shaft 420 through the connecting plate 401 to scrape the foam from the discharge end of the trough body 100 into the receiving trough 600.

[0052] It should be noted that when the foam scraping device 400 is working, the third driving motor 410 drives the rotating shaft 420 to rotate. Since the scraping plate 430 is connected to the rotating shaft 420 through the connecting plate 401, the rotation of the rotating shaft 420 drives the scraping plate 430 to rotate synchronously. During the rotation process, the scraping plate 430 continuously sweeps across the discharge end of the tank body 100, scraping off the foam after processes such as pushing and detecting from the discharge end of the tank body 100. The scraped foam then falls into the receiving tank 600 along the trend, completing the collection of the flotation concentrate foam and ensuring the continuity and efficiency of the entire flotation process.

[0053] In an embodiment of the present application, as Figure 3 shown, the bottom of the receiving tank 600 is an inclined tabletop.

[0054] It should be noted that since the bottom of the receiving tank 600 is an inclined tabletop, the foam can flow smoothly in a specific direction, facilitating collection and subsequent processing, and improving the smoothness of the entire flotation process.

[0055] The following describes the usage method of the flotation concentrate foam flow velocity detection device according to the embodiments of the present application with reference to the drawings.

[0056] As Figures 1 to 8 shown, the usage method of the flotation concentrate foam flow velocity detection device according to the embodiments of the present application includes: starting the aeration and agitation device 200 to generate and maintain foam in the tank body 100, using the ultrasonic detection device 500 to measure the propagation time difference of ultrasonic waves in the downstream and upstream directions, the controller calculates the flow velocity value according to the time difference, and adjusts the position and working state of the pushing end of the pushing device 300 according to the flow velocity value, and the foam scraping device 400 scrapes the foam from the discharge end of the tank body 100 into the receiving tank 600.

[0057] To clearly illustrate the previous embodiment, in an embodiment of the present application, the controller calculates the flow velocity value according to the time difference and adjusts the position and working state of the pushing end of the pushing device 300, including:

[0058] The controller obtains the time difference data and calculates the flow velocity value according to the built-in calculation formula.

[0059] It should be noted that the above calculation formula is V = C 2 *T / (4 * 2 * L * cosθ), where V is the calculated flow velocity, C is the ultrasonic wave velocity, T is the time difference, L is the reflection sound path length of the two ultrasonic transducers, and θ is the included angle between the ultrasonic wave emission direction and the fluid direction. Relevant staff can measure the length and included angle data after installing the two ultrasonic transducers and input them into the controller, and then the controller can generate the corresponding flow velocity data after obtaining the time difference.

[0060] If the flow velocity value exceeds the maximum value of the flow velocity preset range of the controller, it indicates that the foam flows too fast, which may lead to foam accumulation or insufficient treatment. Then the controller controls the second drive motor 310 to move the grid plate 330 downward and stop, so as to block and break the foam.

[0061] If the flow velocity value is within the flow velocity preset range of the controller, it indicates that the foam flow state is normal and no additional intervention is required. Then the controller controls the second drive motor 310 to move the grid plate 330 upward and stop, so as to avoid hindering the foam flow.

[0062] If the flow velocity value is lower than the minimum value of the flow velocity preset range of the controller, it indicates that the foam flows too slowly, which may lead to foam accumulation or reduced treatment efficiency. Then the controller controls the second drive motor 310 to make the grid plate 330 move continuously along the ring, so as to push the foam towards the foam scraping device 400 while breaking large foam.

[0063] In summary, for the flotation concentrate foam flow velocity detection device according to the embodiments of the present application, the ultrasonic detection device 500 is used to measure the foam flow velocity, and the controller accurately adjusts the position and working state of the pushing end of the pushing device 300 according to the flow velocity value. When the flow velocity is too fast, the pushing end moves downward and stops, effectively blocking the foam, reducing the flow velocity, and at the same time breaking large foam, reducing the influence of large foam interference on the detection accuracy, ensuring that the detection data more accurately reflects the actual foam flow velocity, and providing a reliable basis for the precise control of the flotation process; when there are many large foams or the foam scraping speed is slow, the pushing end of the pushing device 300 moves continuously along the ring, pushing the foam towards the foam scraping device 400, making the foam closer to the discharge end, greatly facilitating the work of the foam scraping device 400, significantly improving the foam scraping efficiency. At the same time, large foam is broken during the pushing process, making the foam state more uniform, which not only helps the foam scraping device 400 to scrape out the foam more thoroughly, improving the foam scraping quality, but also makes the foam more uniform, improving the detection accuracy.

[0064] In the description of this specification, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0065] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0066] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A flotation concentrate foam flow velocity detection device, characterized in that: include: A tank body (100), an aeration stirring device (200), a material pushing device (300), a foam scraping device (400), an ultrasonic detection device (500) and a receiving tank (600), wherein: The aeration stirring device (200), the pushing device (300) and the foam scraping device (400) are sequentially arranged along the flotation flow direction, wherein the pushing end of the pushing device (300) moves in a circular shape along the flotation flow direction to break the foam when the pushing end is located at the bottom and separate from the foam when the pushing end is located at the top; The ultrasonic detection device (500) is arranged between the material pushing device (300) and the foam scraping device (400) to detect the foam flow speed; The receiving groove (600) is arranged at the discharge end of the groove body (100) to receive the foam scraped out by the foam scraping device (400); Wherein, the pushing device (300) and the ultrasonic detection device (500) are electrically connected to the controller respectively.

2. The flotation concentrate foam flow velocity detection device according to claim 1, characterized in that: The aeration stirring device (200) comprises a first driving motor (210), a transmission structure (220), a main shaft sleeve (230), an impeller (240) and an air intake pipe (250), wherein: The first driving motor (210) and the main shaft sleeve (230) are both arranged on the tank body (100) via a mounting frame (101); The impeller (240) is connected to the main shaft, the main shaft extends upward through the bearing in the main shaft sleeve (230), and is connected to the first drive motor (210) through the transmission structure (220); An air intake cavity (231) is provided at the lower part of the main shaft sleeve (230), the air intake pipe (250) is in communication with the air intake cavity (231), and the air intake pipe (250) is connected to an external air pump.

3. The flotation concentrate foam flow velocity detection device according to claim 1, characterized in that: The pushing device (300) comprises a second driving motor (310), a sprocket structure (320) and a grid plate (330), wherein: The two sprocket structures (320) are respectively arranged on two sides of the tank body (100); The grid plate (330) is arranged in the tank body (100), and two ends of the grid plate (330) are respectively connected to the corresponding movable ends of the sprocket structure (320) through connecting blocks (301); The second driving motor (310) is arranged on the tank body (100) and is connected to one of the sprocket structures (320).

4. The flotation concentrate foam flow velocity detection device according to claim 3, characterized in that: The mesh plate (330) is provided with sharp spikes.

5. The flotation concentrate foam flow velocity detection device according to claim 1, characterized in that: The foam scraping device (400) comprises a third driving motor (410), a rotating shaft (420) and a scraper (430), wherein: The rotating shaft (420) is rotatably disposed at the discharge end of the tank body (100); The third driving motor (410) is arranged on the tank body (100) and is connected to the rotating end of the rotating shaft (420); The scraper (430) is connected to the rotating shaft (420) via a connecting plate (401) so as to scrape the foam from the discharge end of the tank body (100) into the receiving tank (600).

6. The flotation concentrate foam flow velocity detection device according to claim 1, characterized in that: The ultrasonic detection device (500) comprises two ultrasonic transducers, wherein the two ultrasonic transducers are staggeredly arranged on both sides of the tank body (100) along the flotation flow direction to record the propagation time difference of the ultrasonic wave in the downstream and upstream directions.

7. The flotation concentrate foam flow velocity detection device according to claim 1, characterized in that: The bottom of the receiving groove (600) is an inclined table surface.

8. A method for using the flotation concentrate foam flow velocity detection device according to any one of claims 1 to 7, characterized in that: Starting the aeration and stirring device (200) to generate and maintain foam in the tank body (100); Using an ultrasonic detection device (500) to measure the propagation time difference of the ultrasonic wave in the downstream and upstream directions; The controller calculates the flow velocity value according to the time difference, and adjusts the position and working state of the pushing end of the pushing device (300) according to the flow velocity value; The foam scraping device (400) scrapes the foam from the discharge end of the tank body (100) into the receiving tank (600).

9. The method of use according to claim 8, characterized in that: The controller calculates the flow velocity value according to the time difference, and adjusts the position and working state of the pushing end of the pushing device (300) according to the flow velocity value, including: The controller obtains the time difference data and calculates the flow rate value according to the built-in calculation formula; If the flow rate value exceeds the maximum value of the flow rate preset interval of the controller, the controller controls the second driving motor (310) to move the grid plate (330) downward and stop, thereby blocking and breaking the foam; If the flow rate value is within the flow rate preset range of the controller, the controller controls the second drive motor (310) to move the grid plate (330) upward and stop, thereby avoiding obstruction to the flow of foam; If the flow rate value is lower than the minimum value of the preset flow rate interval of the controller, the controller controls the second drive motor (310) to make the grid plate (330) move continuously in a circular shape, thereby pushing the foam toward the scraping device (400) and breaking up the large foam.

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