Ore grinding medium filling rate measuring device of overflow type ball mill

Abstract

The utility model belongs to the field of mineral processing technology, and relates to an ore grinding medium filling rate measuring device of an overflow ball mill, which comprises a base provided with a mounting surface; the scale is vertically mounted on the mounting surface; the scale is provided with scales; the sliding rod is vertically mounted on the mounting surface and is parallel to the scale; the sliding sleeve is mounted on the sliding rod and can slide along the sliding rod; the linear ray light source generating device is mounted on the sliding sleeve, and when the sliding sleeve slides along the sliding rod, the linear ray light source generating device moves along the scale; the pointer is mounted on the sliding sleeve and horizontally points to the scales of the ruler; the pointer and the linear ray light source generating device are installed in a linkage mode. The device is simple in structure, convenient to operate, time-saving, labor-saving, high in safety and rapid and accurate in measurement, and the working efficiency of the ball mill is improved.

Description

Technical Field

[0001] The utility model belongs to the field of ore dressing technology, relates to ball mill grinding, and specifically relates to an overflow type ball mill grinding medium filling rate measuring device. Background Art

[0002] Ball mills are divided into grid type ball mills and overflow type ball mills according to different discharge methods. They are the most common mills used in mineral processing plants. The overflow type ball mill discharges ore by overflowing the mill when the ore slurry surface height is higher than the lowest generatrix of the inner diameter of the discharge port. The discharge speed is slow, so the ore stays in the machine for a long time, and the grinding effect is also fine, so it is widely used in mineral processing plants.

[0003] An important condition for the grinding effect of overflow ball mill is the grinding medium filling rate, which is: Ψ = (50-127b / D), Ψ ball mill filling rate, b is the height from the grinding medium surface in the ball mill to the horizontal center point of the ball mill, and D is the diameter of the ball mill.

[0004] The prior art method for determining the filling rate of grinding media is to manually enter the ball mill, measure the height from the grinding medium to the horizontal center point of the overflow mill (ball mill), and calculate the percentage of the effective volume inside the overflow ball mill occupied by the grinding medium, that is, the filling rate of the grinding medium, through the effective volume inside the overflow ball mill. Utility Model Content

[0005] The present application provides an overflow-type ball mill grinding medium filling rate measuring device, which can realize accurate measurement from outside the ball mill discharge port and ensure the safety of measurement personnel.

[0006] In order to achieve the above technical purpose, the technical solution adopted by the present application is a device for measuring the filling rate of overflow ball mill grinding media, comprising:

[0007] A base, providing a mounting surface;

[0008] A ruler is vertically mounted on the mounting surface; the ruler is provided with scales;

[0009] A sliding rod is vertically mounted on the mounting surface and parallel to the scale;

[0010] A sliding sleeve, mounted on the sliding rod and capable of sliding along the sliding rod;

[0011] A linear ray light source generating device is installed on the sliding sleeve;

[0012] When the sliding sleeve slides along the sliding rod, the linear ray light source generating device moves along the ruler;

[0013] A pointer is mounted on the sliding sleeve and points horizontally to the scale of the ruler;

[0014] Wherein, the pointer is installed in linkage with the linear ray light source generating device.

[0015] As an improved technical solution of the present application, it also includes a horizontal ruler, one end of which is installed on the ruler, and the other end is installed on the sliding rod.

[0016] As an improved technical solution of the present application, feet are installed on the base.

[0017] As an improved technical solution of the present application, the scale of the ruler is millimeters.

[0018] Beneficial Effects

[0019] 1. This device is outside the mill discharge port and uses a linear light source and a ruler for measurement. Personnel do not need to enter the mill, and there is no need for complex safety process application approval and safety supervision;

[0020] 2. Personnel do not need to enter the mill, and there is no requirement for the internal temperature of the mill, so there is no need to wait for the cooling time, which reduces the mill downtime and improves production efficiency;

[0021] 3. Personnel do not need to enter the mill, and misoperation by external personnel will not cause personal safety accidents, achieving inherent safety;

[0022] 4. The measuring point is fixed, the detection error is reduced, and the measurement accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram showing the structure of the device of the present application is shown;

[0024] In the figure: 1. base; 2. sliding rod; 3. linear ray light source generating device; 4. sliding sleeve; 5. pointer; 6. level ruler; 7. ruler; 8. foot. DETAILED DESCRIPTION

[0025] The technical solution of the present application is based on the principle of utilizing the linear motion of light, using a horizontal transverse linear ray light source generating device that moves up and down, to irradiate the overflow port of the overflow ball mill from the horizontal direction, and determine the horizontal center height of the overflow ball mill by measuring the heights of the upper and lower ports of the overflow port of the overflow ball mill; the horizontal transverse linear ray light source moves downward from the horizontal center height point of the overflow ball mill, so that the horizontal transverse rays coincide with the horizontal plane of the grinding medium, and the moving distance of the horizontal transverse linear ray light source is the height b between the surface of the grinding medium in the ball mill and the horizontal center point of the ball mill, and the filling rate of the grinding medium in the overflow ball mill is calculated based on the formula Ψ=(50-127b / D).

[0026] like Figure 1 As shown, a device for measuring the filling rate of grinding media of an overflow ball mill includes a base 1, a scale 7, a sliding rod 2, a sliding sleeve 4, a linear ray light source generating device 3, and a pointer 5.

[0027] The base 1 provides a mounting surface.

[0028] Among them, the ruler 7 is vertically installed on the installation surface; the ruler 7 has scales; one implementation method is that the ruler 7 of the present application adopts a standard ruler, that is, a length measuring ruler, the purpose of which is to measure the moving distance of the linear ray light source generating device 3; one implementation method is that the scale of the ruler 7 is millimeters.

[0029] The slide rod 2 is vertically mounted on the mounting surface and parallel to the scale 7 , so that the pointer 5 can accurately point to the scale 7 .

[0030] Among them, the sliding sleeve 4 is installed on the sliding rod 2 and can slide along the sliding rod 2; the sliding sleeve 4 is installed on the sliding rod 2 in a manner with a certain clamping force and can be manually slid up and down; the sliding sleeve 4 can also be designed to have an elastic clip, the elastic clip has an arc structure and an opening portion, the arc structure is installed on the sliding rod 2, and the opening and closing degree of the opening portion can be tightened by the tightening screw to achieve the fixing of the sliding sleeve.

[0031] Among them, the linear ray light source generating device 3 is installed on the sliding sleeve 4; when the sliding sleeve 4 slides along the sliding rod 2, the linear ray light source generating device 3 moves along the scale 7; wherein, one embodiment is that it can be installed on the sliding sleeve 4 through a buckle; the linear ray light source generating device 3 is fixed to the buckle by a tightening screw, and the linear ray light source generating device 3 uses a battery as a power source to emit linear light.

[0032] Among them, the pointer 5 is installed in conjunction with the linear ray light source generating device 3; in one embodiment, the pointer 5 is installed together with the linear ray light source generating device 3 on the sliding sleeve 4, and when the sliding sleeve 4 is moved, the pointer 5 moves together with the linear ray light source generating device 3; in another embodiment, the movement of the sliding sleeve 4 drives the linear ray light source generating device 3 to move together, and the pointer 5 is moved together with the linear ray light source generating device 3.

[0033] In order to ensure that the device is in a horizontal position to complete accurate measurement, it also includes a horizontal ruler 6, one end of the horizontal ruler 6 is installed on the ruler, and the other end is installed on the slide rod 2.

[0034] In order to enable the device to be placed horizontally, feet are installed on the base 1.

[0035] The technical solution of the present application is clearly and completely described below in conjunction with the accompanying drawings and embodiments.

[0036] A device for measuring the filling rate of overflow ball mill grinding media uses a horizontal transverse linear ray light source that moves up and down to irradiate the overflow port of the overflow ball mill from a horizontal direction. The horizontal center height of the overflow ball mill is determined by measuring the height of the upper and lower overflow ports of the overflow ball mill.

[0037] Based on this, the filling rate of the grinding media in the overflow ball mill is calculated based on the formula Ψ=(50-127b / D).

[0038] In order to realize a horizontal transverse linear ray source that can move up and down in the measuring device, a base 1 is required, on which a slide bar 2 is vertically mounted. The slide bar 2 must be mounted firmly and reliably, and the slide bar 2 can be directly welded to the base 1 .

[0039] A sliding sleeve 4 is installed on the sliding rod 2. The sliding sleeve 4 can slide up and down manually. The sliding sleeve 4 is tightened by a tightening screw to fix the sliding sleeve.

[0040] The linear ray light source generating device 3 adopts a transverse linear ray light source, which is installed on the sliding sleeve buckle. The sliding sleeve buckle fixes the linear ray light source generating device 3 by a tightening screw. The linear ray light source generating device 3 uses a battery as a power source and emits linear light. The tail of the light source is a pointer.

[0041] A standard ruler with a millimeter precision is installed on the base; the ruler 7 is also installed in a vertical state with the base 1. In order to ensure stability, the ruler 7 can be directly welded to the base 1, and the pointer 5 points to the ruler, so as to determine the moving height value during the process of the sliding sleeve 4 moving the linear ray source generating device 3 up and down.

[0042] In order to ensure that the base 1 is in a horizontal state, a horizontal scale 6 is installed between the slide rod 2 and the scale 7 installed on the base 1. The horizontal scale 6 connects the slide rod 2 and the scale 7, and the horizontal scale 6 is installed outside the range of the required moving distance of the slide sleeve that does not affect the connection of the linear ray light source. The horizontal scale 6 connects the slide rod 2 and the scale 7, and has the function of fixing the slide rod 2 and the scale 7, preventing the slide rod 2 or the scale 7 from being in a non-vertical state and causing measurement data errors.

[0043] In order to adjust the horizontal state of the base, four height-adjustable feet 8 are installed at the bottom of the device base to fine-tune the horizontal state of the device base.

[0044] The use process is as follows: manually move the sleeve 4, adjust the linear ray light source generator 3 to the lower outlet of the ball mill overflow, and record the corresponding scale value of the pointer; then move the linear ray light source generator 3 to the upper outlet of the ball mill overflow, and record the corresponding scale value of the pointer; the difference between the upper and lower outlets of the mill overflow is the mill overflow diameter D. Since the ball mill overflow and the ball mill cylinder are concentric circles, the center point of the mill is the radius point from the lower outlet of the mill overflow to the mill overflow. Move the linear ray light source generator to this position, record the corresponding scale value of the pointer, and then move the linear ray light source generator so that the linear ray coincides with the horizontal plane of the grinding medium, record the corresponding scale value of the pointer, and the distance the linear ray light source generator moves is the height b between the surface of the grinding medium in the ball mill and the horizontal center point of the ball mill.

Claims

1. An overflow ball mill grinding medium filling rate measuring device, characterized in that: include A base, providing a mounting surface; A ruler is vertically mounted on the mounting surface; the ruler is provided with scales; A sliding rod is vertically mounted on the mounting surface and parallel to the scale; A sliding sleeve, mounted on the sliding rod and capable of sliding along the sliding rod; A linear ray light source generating device is installed on the sliding sleeve, and when the sliding sleeve slides along the sliding rod, the linear ray light source generating device moves along the scale; A pointer is mounted on the sliding sleeve and points horizontally to the scale of the ruler; Wherein, the pointer is installed in linkage with the linear ray light source generating device.

2. The overflow ball mill grinding medium filling rate measuring device according to claim 1 is characterized in that: It also includes a horizontal ruler, one end of which is installed on the ruler, and the other end of which is installed on the sliding rod.

3. The overflow ball mill grinding medium filling rate measuring device according to claim 1, characterized in that: The base is provided with feet.

4. The overflow ball mill grinding medium filling rate measuring device according to claim 1, characterized in that: The scale of the ruler is millimeter precision.

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