Novel rotary mill cylinder vibration signal acquisition device
By installing vibration acceleration sensors in the drop and impact zones of the mill cylinder, combined with universal bearings and data acquisition devices, the problem of incomplete vibration signal acquisition of the rotary mill cylinder was solved, and the accuracy of grinding load prediction was improved.
Patent Information
- Application Number
- CN202423055959.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing technologies make it difficult to achieve comprehensive and accurate acquisition of vibration signals from rotary mill cylinders, resulting in inaccurate grinding load predictions.
Vibration acceleration sensors are installed in the drop and impact zones of the mill cylinder, supported by cylindrical universal bearings and brackets, and combined with a charge adapter and dynamic data acquisition instrument to achieve accurate and comprehensive acquisition of vibration signals.
It enables the accurate and comprehensive acquisition of vibration signals from the rotary mill cylinder, thereby improving the accuracy of grinding load prediction results.
Smart Images
Figure CN223710818U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of signal collection, and it is a signal collection device for measuring vibration signals directly from a rotating mill cylinder, specifically, it relates to a novel rotary mill cylinder vibration signal collection device. BACKGROUND
[0002] Grinding is a process in which the particle size of ore is continuously reduced until the useful minerals and gangue minerals are fully dissociated by means of the impact and grinding action of the medium (steel balls, steel rods, gravel) in the rotating cylinder of the mill and the ore itself. During the grinding process, the grinding product is highly related to the state parameters such as the filling rate, ball-to-material ratio, and cylinder speed in the mill. However, due to factors such as the traditional centrifugal grinding principle and the structural characteristics of the mill, the current main method is to measure the vibration signals of the bearing seat and the audio signals outside the mill to predict the working state of the ball mill.
[0003] There are three methods for traditional mill cylinder vibration signal collection: one is to measure the vibration signals or gravity signals from the bearing seat far away from the mill cylinder; this method cannot directly and comprehensively reflect the actual working conditions in the cylinder. Two is to install a sensing monitoring device on the cylinder, which periodically acquires effective signals inside the cylinder with the rotation of the cylinder; if the grinding conditions deviate from the normal state, it is difficult to accurately determine the working state of the mill (such as the separation point of the ball and material, the falling point, and the wear amount of the liner plate). How to comprehensively and effectively collect the vibration signals of the rotating mill cylinder and improve the accuracy of the subsequent grinding load prediction results is a problem that needs to be solved. UTILITY MODEL CONTENT
[0004] The utility model provides a kind of novel rotary mill cylinder vibration signal collection device to realize the real, comprehensive collection of rotating mill cylinder vibration signal, improve the accuracy of subsequent grinding load prediction results.
[0005] In order to achieve the above purpose, the utility model provides a kind of novel rotary mill cylinder vibration signal collection device, characterized in that it comprises: a vibration acceleration sensor, a bearing seat fixed outside the vibration acceleration sensor, a cylindrical straight cylinder type universal bearing fixed at the other end of the bearing seat, the bearing seat and the cylindrical straight cylinder type universal bearing are supported by a bracket, the rear end of the vibration acceleration sensor is connected with a charge adapter through a data transmission line, the charge adapter is connected with a dynamic data acquisition instrument through a data transmission line, the dynamic data acquisition instrument transmits the vibration signals collected to a computer through a data transmission line, and the mill cylinder vibration signals can be collected when the mill rotates.
[0006] Further, the vibration acceleration sensor comprises a mill barrel throw-off zone vibration acceleration sensor and a mill barrel impact zone vibration acceleration sensor.
[0007] Further, the cylindrical straight type universal bearing comprises a mill barrel throw-off zone cylindrical straight type universal bearing and a mill barrel impact zone cylindrical straight type universal bearing.
[0008] Further, the support comprises a mill barrel throw-off zone support and a mill barrel impact zone support.
[0009] Further, the cylindrical type universal bearing comprises a ball, a ball bearing, an outer wall and a screw rod, the ball is in rolling contact with the rotary mill barrel, and the linear speeds of the ball and the rotary mill barrel are the same.
[0010] Further, the charge adapter can convert 220V AC voltage into 12V DC voltage.
[0011] Further, the dynamic data acquisition instrument can realize four-channel data input and four-channel data output.
[0012] Further, the ball bearing supports the ball in universal motion, and the screw rod is connected with the bearing seat through threads.
[0013] The beneficial effect of the utility model lies in: the utility model provides a novel rotary mill barrel vibration signal acquisition device, vibration acceleration sensors are installed in the throw-off zone and the impact zone of the mill barrel, the real and comprehensive acquisition of the rotary mill barrel vibration signal can be realized without damaging the mill barrel and the lining plate structure, and the accuracy of subsequent ore grinding load prediction results is improved. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a structural diagram of the novel rotary mill barrel vibration signal acquisition device
[0015] Figure 2 It is a cylindrical straight type universal bearing sectional view structure diagram of the novel rotary mill barrel vibration signal acquisition device
[0016] In the drawing, 1 is a mill barrel throw-off zone vibration acceleration sensor, 2 is a mill barrel impact zone vibration acceleration sensor, 3 is a mill barrel throw-off zone cylindrical straight type universal bearing, 4 is a mill barrel impact zone cylindrical straight type universal bearing, 5 is a mill barrel throw-off zone support, 6 is a barrel impact zone support, 7 is a mill barrel, 8 is a ball, 9 is a ball bearing, 10 is an outer wall, and 11 is a screw rod. DETAILED DESCRIPTION
[0017] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0018] like Figure 1 As shown in the diagram, in order to achieve the above objectives, this utility model provides a structural diagram of a novel rotary mill cylinder vibration signal acquisition device (see figure). Figure 1 ),Depend on Figure 1 It can be seen that: the novel rotary mill cylinder vibration signal acquisition device of this utility model includes: a vibration acceleration sensor, an externally fixed bearing seat for the vibration acceleration sensor, a cylindrical universal bearing fixed at the other end of the bearing seat, the bearing seat and the cylindrical universal bearing being supported by a bracket, the rear end of the vibration acceleration sensor being connected to a charge adapter via a data transmission line, the charge adapter being connected to a dynamic data acquisition instrument via a data transmission line, and the dynamic data acquisition instrument transmitting the acquired vibration signal to a computer via the data transmission line. When the mill rotates, the vibration signal of the mill cylinder can be acquired.
[0019] In this embodiment, the vibration acceleration sensor includes a vibration acceleration sensor 1 for the mill cylinder drop zone and a vibration acceleration sensor 2 for the mill cylinder impact zone.
[0020] In this embodiment, the cylindrical straight-tube universal bearing includes a cylindrical straight-tube universal bearing 3 in the mill barrel drop zone and a cylindrical straight-tube universal bearing 4 in the mill barrel impact zone.
[0021] In this embodiment, the support includes a mill cylinder drop zone support 5 and a mill cylinder impact zone support 6.
[0022] like Figure 1 and Figure 2 As shown, in this embodiment, the cylindrical universal bearing includes a ball bearing 8, a ball bearing 9, an outer wall 10, and a screw 11. The ball bearing is in rolling contact with the rotary mill cylinder 7, and the two have the same linear velocity.
[0023] In this embodiment, the charge adapter can convert 220V AC voltage to 12V DC voltage.
[0024] In this embodiment, the dynamic data acquisition instrument can realize four-channel data input and four-channel data output.
[0025] In this embodiment, the ball bearing 9 supports the ball bearing 8 to perform omnidirectional motion, and the screw 11 is connected to the bearing housing by a thread.
[0026] When the mill is working, the mill barrel makes rotational movement, the medium (steel ball, steel bar, gravel) and ore in the mill barrel make parabolic motion under the action of friction, the mill barrel produces vibration signal under the impact of the medium (steel ball, steel bar, gravel) and ore, the vibration signal of the mill barrel is collected through the vibration acceleration sensor 1 in the falling area of the mill barrel and the vibration acceleration sensor 2 in the impact area of the mill barrel, the collected data is transmitted to the charge adapter through the data transmission line, the alternating current signal is converted into direct current signal through the charge adapter, then the vibration signal collected is transmitted to the computer through the data transmission line after the dynamic data acquisition instrument.
[0027] The device can realize real and comprehensive collection of the vibration signal of the rotating mill barrel without damaging the structure of the mill barrel and the lining plate, and improve the accuracy of the subsequent grinding load prediction result by installing vibration acceleration sensors in the falling area and the impact area of the mill barrel.
Claims
1. A novel rotary mill cylinder vibration signal acquisition device, characterized in that, include: A vibration acceleration sensor is provided, with an externally fixed bearing housing. A cylindrical universal bearing is fixed to the other end of the bearing housing. The bearing housing and the cylindrical universal bearing are supported by a bracket. The rear end of the vibration acceleration sensor is connected to a charge adapter via a data transmission line. The charge adapter is connected to a dynamic data acquisition instrument via the data transmission line. The dynamic data acquisition instrument transmits the acquired vibration signal to a computer via the data transmission line. When the mill rotates, the vibration signal of the mill cylinder can be collected.
2. The novel rotary mill cylinder vibration signal acquisition device according to claim 1, characterized in that, The vibration acceleration sensor includes a vibration acceleration sensor for the mill cylinder drop zone and a vibration acceleration sensor for the mill cylinder impact zone.
3. The novel rotary mill cylinder vibration signal acquisition device according to claim 1, characterized in that, The cylindrical straight-tube universal bearing includes a cylindrical straight-tube universal bearing in the mill cylinder drop zone and a cylindrical straight-tube universal bearing in the mill cylinder impact zone.
4. The novel rotary mill cylinder vibration signal acquisition device according to claim 1, characterized in that, The support includes a mill cylinder drop zone support and a mill cylinder impact zone support.
5. The novel rotary mill cylinder vibration signal acquisition device according to claim 1, characterized in that, The cylindrical straight-tube universal bearing includes rolling balls, ball bearings, outer wall and screw. The rolling balls are in rolling contact with the rotary mill cylinder, and the two have the same linear velocity.
6. A novel rotary mill cylinder vibration signal acquisition device according to claim 1, characterized in that, The charge adapter can convert 220V AC voltage to 12V DC voltage.
7. A novel rotary mill cylinder vibration signal acquisition device according to claim 1, characterized in that, The dynamic data acquisition instrument can achieve four-channel data input and four-channel data output.
8. A novel rotary mill cylinder vibration signal acquisition device according to claim 5, characterized in that, The ball bearing supports the ball in omnidirectional motion, and the screw is connected to the bearing housing by a thread.