A real-time monitoring device for mill liner wear

Abstract

A real-time monitoring device for the wear of a mill liner includes a monitoring component, an information interaction component and a control mechanism. The monitoring component is provided with a detection bolt, one end of which passes through the mill cylinder and the mill liner in sequence and is flush with the inner edge of the mill liner, and the other end of the detection bolt extends out of the outside of the mill cylinder. The interior of the detection bolt is a hollow structure, and the hollow structure is sealed and fixed with a sensor probe by an insulating castable. The real-time monitoring device for the wear of a mill liner of the present invention can effectively monitor the wear of the mill liner in real time and accurately without stopping the mill, thereby improving the effective utilization rate of the mill liner and improving the production efficiency of the mill.

Description

Technical Field

[0001] The invention relates to the technical field of mills, in particular to a real-time monitoring device for the wear of a mill liner. Background Art

[0002] The liner is a vulnerable part of the mill. During the operation of the mill, the liner will be constantly worn and damaged. The common measure for detecting the liner in the industry is to stop the mill regularly to check the wear of the liner. Since the liner covers the entire inner surface of the mill, there is a lack of direct detection methods. The common methods for detecting the wear of the liner are direct method and indirect method. The direct method is to remove the liner and measure it directly. The indirect method is to infer the wear of the liner by detecting the change in the space of the inner wall of the mill. For example, the physical pin insertion method and the three-dimensional scanning modeling method can be used to measure the spatial change.

[0003] However, the above-mentioned methods for detecting the wear of the mill liner all require the mill to be shut down before they can be performed. At the same time, it is necessary to enter the interior of the mill, which is time-consuming, labor-intensive, and costly to operate.

[0004] Therefore, in order to avoid serious damage to the mill cylinder due to wear and tear of the mill liner, many mill users have to frequently replace the mill liner before the mill liner is completely consumed based on experience, resulting in short service life of the mill liner, low utilization rate and low mill production efficiency. Summary of the invention

[0005] In order to solve the technical problem that the mill liner wear detection device in the prior art needs to stop the mill for operation during detection, which is costly and cumbersome to operate, the present invention provides a real-time monitoring device for mill liner wear, which can effectively monitor the wear of the mill liner in real time and accurately without stopping the mill, thereby improving the effective utilization rate of the mill liner and improving the production efficiency of the mill.

[0006] The present invention solves the above technical problems and adopts the following technical solutions: a real-time monitoring device for the wear of a mill liner, comprising a monitoring component, an information interaction component and a control mechanism, wherein the monitoring component is provided with a detection bolt, one end of which passes through the mill cylinder and the mill liner in sequence and is flush with the inner edge of the mill liner, and the other end of which extends out of the outer side of the mill cylinder, the interior of the detection bolt is a hollow structure, and the hollow structure part is sealed and fixed with a sensor probe by an insulating castable;

[0007] A mounting base is provided at one end of the detection bolt extending out of the mill cylinder, a threaded hole is provided on the lower surface of the mounting base, and the mounting base is threadedly connected to the end of the detection bolt through the threaded hole, and a non-shielded shell serving as a cover is also provided on the outer side of the mounting base, and the lower part of the non-shielded shell is fixedly connected to the outer circumference of the mounting base through connecting bolts, and a certain gap is reserved between the upper surface of the mounting base and the non-shielded shell, and a battery and a circuit board are arranged in the gap space, and a sensor module, a processor module, a transmitter module and a wireless communication module that are interconnected are arranged on the circuit board, wherein the sensor module is electrically connected to the sensor probe in the detection bolt;

[0008] The information interaction component includes a wireless receiving base station, the input end of which is connected to a wireless antenna via a wireless coaxial cable, and is used to receive information transmitted from a circuit board of the monitoring component. The control mechanism includes a host computer, which is connected to an output end of the wireless receiving base station via a network cable, and is used to realize information interaction between the wireless receiving base station and the host computer.

[0009] Preferably, the threaded hole on the mounting substrate is a countersunk hole, and a wire hole is provided above the threaded hole, and the sensor probe in the detection bolt is electrically connected to the sensor module through a connecting wire passing through the wire hole.

[0010] Preferably, an anti-loosening mechanism for tightening the mounting substrate against the non-shielding housing along the circumferential direction is further provided in the threaded hole of the mounting substrate.

[0011] Preferably, the anti-loosening mechanism is a circular pre-top piece, the outer diameter of the pre-top piece is larger than the diameter of the threaded hole, the inner diameter of the pre-top piece is smaller than the diameter of the threaded hole, and a accommodating groove for accommodating the pre-top piece is provided in the threaded hole. After the detection bolt is connected with the threaded hole, the pre-top piece squeezes the installation substrate toward the non-shielded shell under the extrusion force of the detection bolt, thereby preventing the installation substrate from loosening.

[0012] Preferably, the accommodating groove is arranged at the inlet end of the threaded hole.

[0013] Preferably, the sensor probe is arranged in the hollow structure portion of the detection bolt along the length direction of the detection bolt.

[0014] Preferably, the sensor probe includes an electrode and a linear resistor, the linear resistor is arranged along the length direction of the detection bolt, and the length of the linear resistor is not less than the thickness of the mill liner, and the electrode and the linear resistor are both electrically connected to the sensor module.

[0015] Beneficial effects:

[0016] 1. The real-time monitoring device for the wear of mill lining of the present invention has strong overall practicality and high degree of automation. It can effectively monitor the wear of mill lining in real time, solve the problem of detecting the wear of mill lining without stopping the machine, improve the effective utilization rate of mill lining, extend its service life, avoid waste, and greatly improve the production efficiency of the mill. At the same time, it also effectively protects the mill cylinder and prevents it from being damaged by wear.

[0017] 2. A real-time monitoring device for the wear of a mill liner of the present invention has a cover-shaped non-shielding shell with a non-shielding function at the head of the detection bolt, which can not only achieve effective structural protection for modules such as data processing, but also effectively avoid the problem of easy shielding and blocking of data signals in a confined space. The structural design is reasonable and the signal transmission efficiency is high.

[0018] 3. The real-time monitoring device for the wear of a mill liner of the present invention seals the detection device of the mill liner inside the detection bolt, and the circuit board, battery and other components used for signal processing and transmission are detachably arranged on the outside of the detection bolt through the installation substrate, non-shielded shell and other structures. This detachable setting method realizes the independent setting and installation of the information detection component and the data processing and transmitting component, which not only greatly reduces the installation difficulty of the detection bolt and improves the installation efficiency, but also successfully solves the protection problem of the data processing and transmitting element, so that it can be reused many times after the detection bolt is worn and damaged, thereby greatly reducing the overall detection cost of the mill liner and saving energy.

[0019] 4. The real-time monitoring device for the wear of the mill liner of the present invention has a simple structure and an ingenious design. Through the optimization of the separation structure between the cover-type non-shielded housing, the information processing and transmitting original component, the installation substrate and the detection bolt, the data acquisition component - the detection bolt can be installed just like the ordinary liner bolt, and no special training is required for the installation workers; after the data acquisition component is installed, the bolt head original component with the information transmitting function is installed and connected by professionals. This operation mode has a clear division of labor and enables the device as a whole to better adapt to the complex working conditions of industrial applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic cross-sectional view of the structure of the monitoring component in the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the information interaction component and the control mechanism in the present invention;

[0022] Graphic markings: 1. Monitoring component, 101. Battery, 102. Mounting substrate, 103. Circuit board, 104. Non-shielded housing, 105. Connecting bolt, 106. Anti-loosening mechanism, 107. Detection bolt, 2. Information interaction component, 201. Wireless receiving base station, 202. Wireless antenna, 203. Wireless coaxial cable, 204. Network cable, 3. Control mechanism, 301. Host computer. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings, but the purpose of disclosing the present invention is to protect all changes and improvements within the scope of the present invention, and the present invention is not limited to the following embodiments.

[0024] As shown in the figure, a real-time monitoring device for mill liner wear is composed of three parts: a monitoring component 1, an information interaction component 2 and a control mechanism 3.

[0025] The monitoring component 1 is generally divided into two parts: a mill liner wear data acquisition component and a processing and transmitting component. The two major parts are in a separated state and connected through a circuit. The mill liner wear data acquisition component is provided with a detection bolt 107, one end of which passes through the mill cylinder and the mill liner in turn and is flush with the inner edge of the mill liner. The other end of the detection bolt 107 extends out of the outside of the mill cylinder. The interior of the detection bolt 107 is a hollow structure, and the hollow structure part is sealed and fixed with a sensor probe by an insulating castable; a mounting base plate 102 is provided at one end of the detection bolt 107 extending out of the mill cylinder, and a threaded hole is provided on the lower surface of the mounting base plate 102. The mounting base plate 102 is threadedly connected to the end of the detection bolt 107 through the threaded hole. A non-shielded outer cover is also provided on the outside of the mounting base plate 102 to cover it. Shell 104, the lower part of the non-shielded shell 104 is fixedly connected to the outer circumference of the mounting substrate 102 by connecting bolts 105, a certain gap is reserved between the upper surface of the mounting substrate 102 and the non-shielded shell 104, and a battery 101 and a circuit board 103 are arranged in the cavity-type space formed by the gap, and the circuit board 103 is provided with a sensor module, a processor module, a transmitter module and a wireless communication module that are interconnected, that is, the transmitter module, the sensor module, the processor module, the wireless communication module and the power supply module are all welded on the mounting substrate of the bolt head, wherein the sensor module is electrically connected to the sensor probe in the detection bolt 107, and the transmitter module collects and exchanges data with the wireless receiving base station.

[0026] The information interaction component 2 includes a wireless receiving base station 201, the input end of which is connected to a wireless antenna 202 via a wireless coaxial cable 203, and is used to receive information transmitted from the circuit board 103 of the monitoring component 1. The control mechanism 3 includes a host computer 301, which is connected to the output end of the wireless receiving base station 201 via a network cable 204, and is used to realize information interaction between the wireless receiving base station 201 and the host computer 301.

[0027] Preferably, the threaded hole on the mounting substrate 102 is a countersunk hole, and a wire hole is provided above the threaded hole, and the sensor probe in the detection bolt 107 is electrically connected to the sensor module through a connecting wire passing through the wire hole.

[0028] Preferably, an anti-loosening mechanism 106 for tightening the mounting substrate 102 against the non-shielded housing 104 along the circumferential direction is further provided in the threaded hole of the mounting substrate 102. The anti-loosening mechanism 106 is a circular pre-lifting piece, the outer diameter of which is larger than the diameter of the threaded hole, the inner diameter of which is smaller than the diameter of the threaded hole, and a receiving groove for accommodating the pre-lifting piece is also provided in the threaded hole, and the receiving groove is arranged at the inlet end of the threaded hole. After the detection bolt 107 is connected with the threaded hole, the pre-lifting piece squeezes the mounting substrate 102 toward the non-shielded housing 104 under the extrusion force of the detection bolt 107, thereby preventing the mounting substrate 102 from loosening.

[0029] Preferably, the sensor probe comprises an electrode and a linear resistor parallel to the electrode. The linear resistor is arranged along the length direction of the detection bolt 107, and the length of the linear resistor is not less than the thickness of the mill lining. When the probe is worn, its resistance value changes linearly with the change of the length. Through the change of the resistance value, the length corresponding to the current resistance value, that is, the thickness of the lining, can be calculated. Common methods for converting the probe resistance signal into voltage and current signals include bridge method, constant voltage source method, and constant current source method.

[0030] The length of the sensor probe is equal to the thickness of the mill lining, and the sensor probe is wrapped with insulating material. The amount of worn length of the sensor probe is converted into an electrical signal by the sensor module, and then the electrical signal is sent to the processor module after A / D conversion. The processor module receives the signal sent by the sensor module and converts it into readable data and stores the data in the memory. Then, according to the instructions and pre-defined programs sent by the wireless transmitting base station, the data is transmitted back to the wireless receiving base station through the transmitter module and the wireless communication module via the wireless antenna and the wireless coaxial cable. The wireless receiving base station is responsible for establishing a communication connection between the monitoring component and the control mechanism-the host computer. Its main function is to receive the instructions and data requests sent by the host computer, and transmit the wear data signal of the mill lining detected by the monitoring component to the host computer.

[0031] The monitoring component is connected to the grinding mill programmable controller via a serial communication line, and is connected to the central control operator station via an Ethernet communication line to achieve a human-machine exchange function.

[0032] The parts not described in detail in the above content are prior art, so they are not described in detail.

[0033] It should be explained that the present invention is not limited to the above-mentioned specific implementation process, and relevant technical personnel can make modifications without substantial creativity based on this embodiment, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A real-time monitoring device for mill liner wear, characterized in that: The invention comprises a monitoring component (1), an information interaction component (2) and a control mechanism (3), wherein the monitoring component (1) is provided with a detection bolt (107), one end of which passes through a mill cylinder and a mill liner in sequence and is flush with the inner edge of the mill liner, and the other end of which extends out of the outer side of the mill cylinder, the interior of the detection bolt (107) is a hollow structure, and a sensor probe is sealed and fixed to the hollow structure part by an insulating casting material, and the sensor probe comprises an electrode and a linear resistor, and the linear resistor is arranged along the length direction of the detection bolt (107), and the length of the linear resistor is not less than the thickness of the mill liner; A mounting base plate (102) is provided at one end of the detection bolt (107) extending out of the mill cylinder, a threaded hole is provided on the lower surface of the mounting base plate (102), and the mounting base plate (102) is threadedly connected to the end of the detection bolt (107) through the threaded hole. A non-shielded housing (104) serving as a cover is also provided on the outer side of the mounting base plate (102), and the lower part of the non-shielded housing (104) is fixedly connected to the outer circumference of the mounting base plate (102) through a connecting bolt (105). A certain gap is reserved between the upper surface of the mounting base plate (102) and the non-shielded housing (104), and a battery (101) and a circuit board (103) are provided in the gap space. The circuit board (103) is provided with a sensor module, A processor module, a transmitter module and a wireless communication module, wherein the sensor module is electrically connected to an electrode and a linear resistor in a detection bolt (107); an anti-loosening mechanism (106) for tightening the mounting substrate (102) against a non-shielded housing (104) along a circumferential direction is also provided in the threaded hole of the mounting substrate (102); the anti-loosening mechanism (106) is a circular pre-lifting member, the outer diameter of the pre-lifting member is larger than the diameter of the threaded hole, the inner diameter of the pre-lifting member is smaller than the diameter of the threaded hole, and a receiving groove for accommodating the pre-lifting member is also provided in the threaded hole; after the detection bolt (107) is connected with the threaded hole, the pre-lifting member presses the mounting substrate (102) toward the non-shielded housing (104) under the extrusion force of the detection bolt (107), thereby preventing the mounting substrate (102) from loosening; The information interaction component (2) comprises a wireless receiving base station (201), the input end of the wireless receiving base station (201) being connected to a wireless antenna (202) via a wireless coaxial cable (203) and being used to receive information transmitted from a circuit board (103) of the monitoring component (1); the control mechanism (3) comprises a host computer (301), the host computer (301) being connected to an output end of the wireless receiving base station (201) via a network cable (204) and being used to realize information interaction between the wireless receiving base station (201) and the host computer (301).

2. A real-time monitoring device for mill liner wear according to claim 1, characterized in that: The threaded hole on the mounting base plate (102) is a countersunk hole, and a wire hole is provided above the threaded hole. The sensor probe in the detection bolt (107) and the sensor module are electrically connected via a connecting wire passing through the wire hole.

3. The real-time monitoring device for mill liner wear according to claim 1 is characterized in that: The accommodating groove is arranged at the inlet end of the threaded hole.

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