A mineral screening device capable of automatically determining turbidity of a screening solution

Abstract

The utility model discloses a kind of mineral screen analysis devices of automatically judging screening solution turbidity, including screening container, wet screening mechanism and industrial computer, the wet screening mechanism includes electric telescopic support, vibrating support and screen, the electric telescopic support is connected with vibrating support, vibrating motor is installed on the vibrating support, screen is equipped below the vibrating support;The screening container is transparent container, screening container support is equipped outside the screening container, camera is installed outside the screening container, reference plate is installed in the side corresponding to camera in the screening container.The utility model replaces artificial ore grinding screening, equipment state adjustment and result record by automation control, reduces artificial intervention link, avoids the error caused by operation fatigue or experience difference;Systematization controls vibration frequency, screening parameters such as duration, eliminates the result fluctuation caused by random nature in traditional wet screening due to artificial adjustment, ensures that data comparability under different batches, different operators.

Description

Technical Field

[0001] This utility model belongs to the field of mineral processing equipment technology, specifically relating to a mineral screening device that automatically judges the turbidity of the screening solution. Background Technology

[0002] In mineral processing tests, minerals need to be crushed and ground first. When the minerals reach a certain degree of liberation, the useful minerals are liberated individually or partially, so that subsequent mineral processing can effectively select the useful minerals.

[0003] With the increasing scarcity of mineral resources, more and more minerals require individual liberation. Effective fine grinding of minerals is crucial for mineral processing. Fine grinding necessitates research into grinding media and the optimal proportions of different media to achieve efficient grinding. The grinding effect of these media is studied in the laboratory by sieving the ground products. Traditional laboratory sieving often requires manual sieving of the ground products. Current wet sieving equipment is often simply designed, requiring manual intervention and constant adjustments to the equipment's operation, resulting in inaccurate results and low efficiency. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a mineral screening device for automatically judging the turbidity of the screening solution.

[0005] The technical solution of this utility model is: a mineral screening device for automatically judging the turbidity of screening solution, including a screening container, a wet screening mechanism and an industrial control computer. The wet screening mechanism includes an electric telescopic support, a vibrating support and a screen. The electric telescopic support is connected to the vibrating support. A vibrating motor is installed on the vibrating support and a screen is provided below the vibrating support. The screening container is a transparent container. A screening container support is provided outside the screening container. A camera is installed outside the screening container. A reference plate is installed on the side of the screening container corresponding to the camera.

[0006] Furthermore, a camera bracket is fixed on the screening container support, and the camera is fixed on the camera bracket; the reference plate is fixed on the screening container support through a reference plate bracket.

[0007] Furthermore, the reference plate is square, and the surface of the reference plate has a white circular contrast area, the center of which coincides with the geometric center of the reference plate.

[0008] Furthermore, a screen fixing ring is fixed below the vibration support, and the screen is placed in the screen fixing ring.

[0009] Furthermore, the screening container has a water inlet on its side wall, one end of which is connected to a water inlet pipe and the other end of which is connected to a nozzle, which is installed inside the screening container; the bottom of the screening container is conical, and a water outlet is provided at the bottom of the screening container, which is connected to a water outlet pipe.

[0010] Furthermore, solenoid valve I and solenoid valve II are respectively installed at the water inlet and water outlet.

[0011] Furthermore, a support base is fixed below the electric telescopic support.

[0012] Furthermore, the industrial control computer is connected to the camera, vibration motor, electric telescopic bracket, solenoid valve I, and solenoid valve II via electrical wires.

[0013] The beneficial effects of this utility model are:

[0014] By replacing manual grinding and screening, equipment status adjustment, and result recording with automated control, manual intervention is reduced, and errors caused by operator fatigue or experience differences are avoided. The systematic control of screening parameters such as vibration frequency and duration eliminates the result fluctuations caused by the randomness of manual adjustment in traditional wet screening, ensuring the comparability of data for different batches and different operators. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the structure of the reference plate of this utility model;

[0017] Figure 3 This is a top view of the structure of this utility model;

[0018] Figure 4 This is another structural schematic diagram of the present invention.

[0019] In the attached diagram, 1 is the ore screening container, 2 is the industrial control computer, 3 is the electric telescopic support, 4 is the vibrating support, 5 is the screen, 6 is the vibrating motor, 7 is the ore screening container support, 8 is the camera, 9 is the reference plate, 9-1 is the white circular comparison area, 10 is the camera support, 11 is the reference plate support, 12 is the screen fixing ring, 13 is the nozzle, 14 is the water inlet pipe, 15 is the water outlet pipe, 16 is the solenoid valve I, 17 is the support base, and 18 is the solenoid valve II. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein 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 only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] like Figures 1 to 4 As shown, a mineral screening device for automatically judging the turbidity of screening solution includes a screening container 1, a wet screening mechanism and an industrial control computer 2. The wet screening mechanism includes an electric telescopic support 3, a vibrating support 4 and a screen 5. The electric telescopic support 3 is connected to the vibrating support 4. A vibrating motor 6 is installed on the vibrating support 4 and the screen 5 is located below the vibrating support 4. The screening container 1 is a transparent container. A screening container support 7 is provided outside the screening container 1. A camera is installed outside the screening container 1. A reference plate 9 is installed on the side of the screening container 1 corresponding to the camera 8.

[0022] In a preferred embodiment of this utility model, a camera bracket 10 is fixed on the screening container support 7, and a camera 8 is fixed on the camera bracket 10; a reference plate 9 is fixed on the screening container support 7 through a reference plate bracket 11.

[0023] like Figure 2 As shown, the reference plate 9 is square, and there is a white circular contrast area 9-1 on the surface of the reference plate 9. The center of the white circular contrast area 9-1 coincides with the geometric center of the reference plate 9.

[0024] In a preferred embodiment of the present invention, the vibrating bracket 4 is fixed below by a screen fixing ring 12, and the screen 5 is placed in the screen fixing ring 12.

[0025] In a preferred embodiment of the present invention, a water inlet is provided on the side wall of the screening container 1. One end of the water inlet is connected to the water inlet pipe 14, and the other end of the water inlet is connected to the nozzle 13, which is installed inside the screening container 1. The bottom of the screening container 1 is conical, and a water outlet is provided at the bottom of the screening container 1. The water outlet is connected to the water outlet pipe 15.

[0026] In a preferred embodiment of this utility model, solenoid valve I16 and solenoid valve II18 are respectively provided at the water inlet and water outlet.

[0027] In a preferred embodiment of this utility model, a support base 17 is fixed below the electric telescopic support 3.

[0028] In a preferred embodiment of this utility model, the industrial control computer 2 is connected to the camera 8, the vibration motor 6, the electric telescopic bracket 3, the solenoid valve I 16, and the solenoid valve II 18 by wires.

[0029] The working process of this utility model is as follows:

[0030] (1) The industrial control computer 2 controls the opening of the solenoid valve I16 at the water inlet and the solenoid valve II18 at the water outlet to close. When the water volume reaches the preset height, the corresponding solenoid valve I16 is closed. The industrial control computer 2 judges whether half of the height of the screen 5 has entered the water based on the image obtained by the camera 8. If it has not entered or has entered too much water, the electric telescopic bracket 3 is controlled to adjust the height of the vibrating bracket 4 until half of the height of the screen 5 enters the water.

[0031] (2) The industrial control computer 2 controls the start of the vibration motor 6, sets the vibration time, and starts screening minerals. In the last 20 seconds of the set vibration time, the industrial control computer 2 controls the vibration motor 6 to adjust the vibration frequency up and down intermittently, and the screen 5 vibrates at different frequencies, so that the screening is more thorough.

[0032] (3) After the vibration stops, the camera 8 acquires the image on the reference plate 9, and the industrial control computer 2 identifies the circle in the acquired image. If no circle is identified, the device continues to screen the ore. The identification algorithm is as follows:

[0033] I. Perform pre-region segmentation on the image (the pre-region is determined based on reference plate 9, ensuring that the area containing the entire white circular contrast area 9-1 is covered), and use the Canny operator for edge detection;

[0034] II. Use the erosion and dilation algorithm to fill the edges and remove some possible noise points, traversing each edge point (xi, yi).

[0035] Ⅲ. Within the possible radius range, for each radius r, calculate all possible center points (a, b) according to the circle equation;

[0036] IV. When the maximum number of points satisfy (a,b,r), and the area of ​​the circle is calculated, the industrial control computer 2 stores the information of this circle. The device has determined the radius and area of ​​the white circular contrast area 9-1. It is necessary to convert the data measured from the image with the data of the white circular contrast area 9-1 to obtain the scale L.

[0037] V. When the vibrating motor 6 stops after screening, process the image using steps I, II, and III. Determine if the circle from step IV is present on the reference plate 9. If not, it indicates the ore was not thoroughly screened. Then, restart the vibrating motor 6 to continue screening, or first open solenoid valve II to drain water and refill the plate for screening. If the circle is present, perform connected component identification on the image.

[0038]

[0039] Determine if a connected component is inside a circle:

[0040]

[0041] When the connected component is inside the circle, the area is calculated:

[0042]

[0043] The area of ​​the connected region A is: A = A K ·L

[0044] A threshold c is set. When the area of ​​the circle minus the area of ​​the connected region A is less than c, it is determined that there is no connected region in the circle, indicating that the slurry water is clear. Then, the industrial control computer 2 opens solenoid valve II 18 to drain the water and opens solenoid valve I 16. The nozzle 13 rinses the screening container 1. After rinsing, the screening is completed. If the value is greater than c, after draining the water, solenoid valve I 16 is opened and nozzle 13 is rinsed to clean the screening container 1. After rinsing, solenoid valve II 18 is closed and solenoid valve I 16 is opened to inject water until the preset scale line is reached. Then, the height of the screen 5 is adjusted. After adjustment, the vibration motor 6 is turned on to continue screening.

[0045] The above description is merely a preferred embodiment of this utility model. However, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, are all covered within the protection scope of this utility model.

Claims

1. A mineral screening device for automatically determining the turbidity of a screening solution, comprising a screening container (1), a wet screening mechanism, and an industrial control computer (2), characterized in that, The wet screening mechanism includes an electric telescopic support (3), a vibrating support (4) and a screen (5). The electric telescopic support (3) is connected to the vibrating support (4). A vibrating motor (6) is installed on the vibrating support (4). A screen (5) is provided below the vibrating support (4). The screening container (1) is a transparent container. A screening container support (7) is provided outside the screening container (1). A camera is installed outside the screening container (1). A reference plate (9) is installed on the side of the screening container (1) corresponding to the camera (8).

2. The mineral screening device for automatically determining the turbidity of the screening solution as described in claim 1, characterized in that, A camera bracket (10) is fixed on the screening container support (7), and the camera (8) is fixed on the camera bracket (10); the reference plate (9) is fixed on the screening container support (7) through the reference plate bracket (11).

3. The mineral screening device for automatically determining the turbidity of the screening solution as described in claim 2, characterized in that, The reference plate (9) is square, and the surface of the reference plate (9) has a white circular contrast area (9-1), the center of which coincides with the geometric center of the reference plate (9).

4. The mineral screening device for automatically determining the turbidity of the screening solution as described in claim 1, characterized in that, The vibrating support (4) is fixed below by a screen fixing ring (12), and the screen (5) is placed in the screen fixing ring (12).

5. The mineral screening device for automatically determining the turbidity of the screening solution as described in claim 1, characterized in that, The screening container (1) has a water inlet on its side wall. One end of the water inlet is connected to the water inlet pipe (14), and the other end of the water inlet is connected to the nozzle (13). The nozzle (13) is located inside the screening container (1). The bottom of the screening container (1) is conical, and the bottom of the screening container (1) has a water outlet connected to the water outlet pipe (15).

6. The mineral screening device for automatically determining the turbidity of the screening solution as described in claim 5, characterized in that, Solenoid valve I (16) and solenoid valve II (18) are respectively installed at the inlet and outlet.

7. The mineral screening device for automatically determining the turbidity of the screening solution as described in claim 1, characterized in that, The electric telescopic bracket (3) has a bracket base (17) fixed below it.

8. The mineral screening device for automatically determining the turbidity of screening solution as described in any one of claims 1 to 7, characterized in that, The industrial control computer (2) is connected to the camera (8), vibration motor (6), electric telescopic bracket (3), solenoid valve I (16) and solenoid valve II (18) by wires respectively.

Images