Multi-layer melt checking ruler device

Abstract

The utility model discloses a multi-layer melt checking device, which comprises a checking rod, a driving device and a mounting bracket, the mounting bracket is erected on a platform support plate, and the checking rod extends into a melt furnace through a checking hole on the platform support plate to check the height of the liquid level; a driving device is fixedly arranged at the top of the mounting bracket, the gauge rod comprises a fixed rod and a movable rod, the fixed rod is movably mounted in a through hole groove in the driving device and is driven by the driving device to lift, the top end of the movable rod is movably mounted in an inner cavity of a lower half section rod body of the fixed rod, and a pressure sensor is arranged on the top wall of a bottom cavity of the fixed rod; the device further comprises a controller and a screen display instrument. The pressure sensor, the driving device and the screen display instrument are electrically connected with the controller. The pressure sensor is arranged at the joint of the fixed rod and the movable rod and used for detecting and collecting stress data of the detection rod, resistance change is analyzed according to the stress data, and then the liquid level height of each layer of melt and the bottom bonding height can be judged.

Description

Technical Field

[0001] The utility model relates to the technical field of melt level detection, in particular to a multi-layer melt measuring device. Background Art

[0002] With the continuous and rapid development of intelligent smelting technology in metallurgy, it has been widely used in more and more fields, such as fire protection, environmental protection, aerospace, military industry, automobile and shipbuilding, engineering plastics and construction. Among them, in the process of intelligent smelting of non-ferrous metals, furnace body liquid level detection is required, and furnace body liquid level detection is related to the safe operation of the furnace and the recovery of precious metals. In order to ensure stable, accurate and controllable production, it is very important to detect the liquid level height of the furnace body.

[0003] In the non-ferrous smelting industry, melt detection and control is very important, and this process is mainly achieved through the use of gauges. The gauge can be used to determine the liquid level and separation effect of slag, matte and bottom bonding. At present, the conventional operation process of the gauge is: manual on-site operation uses a winch to insert the gauge into the bottom of the melt, and the bottom bonding height is determined by comparing it with the standard position. After the gauge is lifted out of the gauge hole, the liquid level of the slag and matte is measured and determined according to the upper and lower stratification of the melt on the gauge.

[0004] After searching, the patent with application number CN202321668354.4 discloses an automatic detection device for the melt level of a flash furnace, including a mounting bracket installed on the top of the flash furnace, a longitudinally arranged screw slide mechanism installed in the mounting bracket, a drive motor installed on the top of the mounting bracket, and the output end of the drive motor drives the screw slide mechanism to rise and fall through a reducer. A measuring rod is arranged on the screw slide mechanism, and the measuring rod is lifted and lowered with the movement of the screw slide mechanism. The bottom end of the measuring rod corresponds to the measuring hole on the flash furnace, and a measuring ruler is fixedly arranged on the mounting bracket next to the measuring hole, so as to realize automatic liquid level monitoring, and no staff needs to operate on site, thereby reducing the labor intensity and safety risks of the staff, and improving the detection efficiency and accuracy.

[0005] However, there are problems in the above process: first, the melt level, dividing line and separation situation all rely on the operator's sensory perception, which is prone to large deviations; second, the melt viscosity and temperature cannot be judged at present, and the role of the ruler is limited; third, the process relies on on-site operation by personnel, which poses a great safety risk.

[0006] Therefore, a multi-layer melt gauge device is proposed which does not rely on the operator's sensory perception for identification and has accurate measurement, automatic and convenient operation, and complete functions. Utility Model Content

[0007] In order to solve the above problems existing in the prior art, the utility model provides a multi-layer melt gauge device.

[0008] The technical solution of the utility model is as follows:

[0009] A multi-layer melt gauge device comprises a gauge rod, a drive device and a mounting bracket, wherein the mounting bracket is mounted on a platform support plate, and the gauge rod extends into a melt furnace through a gauge hole on the platform support plate to detect the liquid level; the drive device is fixedly arranged on the top of the mounting bracket, and the gauge rod comprises a fixed rod and a movable rod, the fixed rod is movably mounted inside a through hole groove in the drive device and driven to rise and fall by the drive device, the top end of the movable rod is movably mounted in an internal cavity of the lower half of the fixed rod, and a pressure sensor is arranged on the top wall of the cavity at the bottom of the fixed rod; a controller and a screen display are also included, and the pressure sensor, the drive device and the screen display are electrically connected to the controller respectively.

[0010] Preferably, the controller is first connected to the DCS, and then the DCS is connected to the screen display, so as to realize remote control.

[0011] Preferably, the top end of the movable rod is fixedly connected to one end of a compression spring, and the other end of the compression spring is connected to the top wall of the internal cavity of the fixed rod through a pressure sensor.

[0012] Preferably, the driving device includes an outer shell, a servo motor, a driving wheel and a follower wheel. The outer shell is fixedly mounted on the top of the mounting bracket, and a through hole groove is provided on the outer shell. A servo motor is arranged inside the outer shell, and an encoder is connected and installed on the servo motor. The encoder is electrically connected to the controller, and the output end of the servo motor is connected to the reducer, and the output end of the reducer is connected to the axle of the driving wheel. The driving wheel and the follower wheel jointly clamp the measuring rod.

[0013] Preferably, positioning rollers are provided on both sides of the notch near the through hole at the bottom of the outer shell to constrain the ruler-gauge rod to remain in a vertical state, and the outer wall of the positioning roller is provided with an arc-shaped positioning groove adapted to the outer wall of the ruler-gauge rod.

[0014] Preferably, a limiting outer convex edge is provided at the top end of the movable rod, and a limiting inner convex edge is provided at the lower end of the cavity of the fixed rod. The limiting outer convex edge is located above the limiting inner convex edge for preventing slippage and limiting.

[0015] Preferably, a temperature sensor is embedded in the bottom end of the movable rod, and the temperature sensor is electrically connected to the controller.

[0016] The utility model has the following beneficial effects: the utility model arranges the detection rod into an active structure including a fixed rod and a movable rod, and arranges a pressure sensor at the connection between the fixed rod and the movable rod to detect and collect the force data of the detection rod, and then analyzes the resistance change through the force data, thereby determining the liquid level height of each layer of the melt and the bottom bonding height. At the same time, a driving wheel and a follower wheel in a driving device are arranged to jointly clamp the measuring rod, thereby realizing automatic control detection without manual labor, and being accurate and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the application scenario of the utility model;

[0018] Figure 2 It is a cross-sectional view of the structure of the driving device of the utility model;

[0019] Figure 3 It is a top view of the utility model;

[0020] Figure 4 It is a cross-sectional view of the overall structure of the utility model;

[0021] Figure 5 It is a flow chart of the working principle of the utility model;

[0022] Figure 6 This is an example diagram of a single test result graph of the screen display instrument of the utility model.

[0023] The reference numerals in the figure are as follows:

[0024] 1. Gauge rod; 101. Fixed rod; 102. Movable rod; 2. Driving device; 201. Driving wheel; 202. Follower wheel; 203. Servo motor; 204. Positioning roller; 205. Reducer; 206. Encoder; 207. Through hole groove; 208. Outer shell; 3. Pressure sensor; 4. Compression spring; 5. Temperature sensor; 6. Mounting bracket; 7. Gauge hole; 8. Platform support plate; 9. Slag liquid level; 10. Matte liquid level; 11. Bottom bonding surface; 12. Furnace bottom. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 to 6A multi-layer melt gauge device comprises a gauge rod 1, a driving device 2 and a mounting bracket 6. The mounting bracket 6 is mounted on a platform support plate 8. The gauge rod 1 extends into the melt furnace through a gauge hole 7 on the platform support plate 8 to detect the liquid level. The melt level in the furnace is sequentially divided into a slag liquid level 9, a matte liquid level 10, a bottom bonding surface 11, and finally a furnace bottom 12.

[0027] A driving device 2 is fixedly arranged on the top of the mounting bracket 7, and the measuring rod 1 includes a fixed rod 101 and a movable rod 102. The fixed rod 101 is movably mounted inside the through hole groove 207 in the driving device 20 and is driven to rise and fall by the driving device 2. The top end of the movable rod 102 is movably mounted in the internal cavity of the lower half of the rod body of the fixed rod 101. A pressure sensor 3 is arranged on the top wall of the bottom cavity of the fixed rod 101, and the device also includes a controller and a screen display. The above-mentioned pressure sensor 3, driving device 2 and screen display are electrically connected to the controller respectively; the controller is first connected to the DCS, and then connected to the screen display by the DCS, so as to realize remote control; at the same time, the top end of the movable rod 102 is fixedly connected to one end of the compression spring 4, and the other end of the compression spring 4 is connected to the top wall of the internal cavity of the fixed rod 101 through the pressure sensor 3, and the compression spring 4 is used to eliminate the active gap.

[0028] The driving device 2 drives the measuring rod 1 to be inserted into the melt from top to bottom at a fixed speed set by the controller, and passes through the slag liquid level 9, the matte liquid level 10 and the bottom bonding surface 11 in sequence, until it reaches the furnace bottom 12. When the resistance value is greater than the set value, the measuring rod 1 stops probing, thereby judging the height of the bottom bonding layer 12;

[0029] Since the gauge rod 1 is extended into the melt, the pressures exerted on the gauge rod 1 by different layers of melt are different. At this time, the force change of the gauge rod 1 can be detected by the pressure sensor 3. According to the different viscosities of different melts, the force change is different. At the same time, resistance analysis is performed based on the data fed back to the controller by the pressure sensor 3 in the gauge rod 1 to judge the melt heights of different layers.

[0030] Furthermore, the driving device 2 includes an outer shell 208, a servo motor 203, a driving wheel 201 and a follower wheel 202. The outer shell 208 is fixedly mounted on the top of the mounting bracket 6, and a through hole groove 207 is provided on the outer shell 208; a servo motor 203 is arranged inside the outer shell 208, and an encoder 206 is connected and installed on the servo motor 203, and the encoder 206 is electrically connected to the controller, and the output end of the servo motor 203 is connected to the reducer 205, and the output end of the reducer 205 is connected to the axle of the driving wheel 201, and the driving wheel 201 and the follower wheel 202 jointly clamp the measuring rod 1.

[0031] The follower wheel 202 is used to cooperate with the driving wheel 201 to clamp the ruler-gauge rod 1, so as to ensure that the driving wheel 201 fits the ruler-gauge rod 1, thereby providing a stable driving friction force.

[0032] Furthermore, positioning rollers 204 are provided on both sides of the bottom of the outer shell 208 near the through hole 207 to constrain the ruler rod 1 to maintain a vertical state, and the outer wall of the positioning roller 204 is provided with an arc-shaped positioning groove adapted to the outer wall of the ruler rod 1.

[0033] Furthermore, a limiting outer convex edge is provided at the top end of the movable rod 102, and a limiting inner convex edge is provided at the lower end of the cavity of the fixed rod 101. The limiting outer convex edge is located above the limiting inner convex edge for preventing disengagement and limiting.

[0034] Furthermore, a temperature sensor 5 is embedded at the bottom end of the movable rod 102. The temperature sensor 5 is electrically connected to the controller to monitor the temperature of the surrounding medium and generate an electrical signal. The electrical signal is fed back to the processor for multi-data analysis.

[0035] The working principle of this utility model:

[0036] In this utility model, see Figure 4 The controller is connected to the drive device 2, and will try to receive the signal data fed back by the pressure sensor 3, the temperature sensor 5 and the encoder 206, and transmit the data remotely to the DCS system, and display it on the screen display for the operator to observe and send out control signals. After receiving the command, the controller will control the servo motor 203 in the drive device 2 to work.

[0037] See also Figures 1 to 4 The mounting bracket 7 is set on the platform support plate 8, and the measuring rod 1 extends into the melt furnace through the measuring hole 7 on the platform support plate 8 to detect the liquid level; the melt liquid level in the furnace is layered into the slag liquid level 9, the matte liquid level 10 and the bottom bonding surface 11, and finally the furnace bottom 12; the driving device 2 is fixedly set on the top of the mounting bracket 6, and the measuring rod 1 includes a fixed rod 101 and a movable rod 102, the fixed rod 101 is movably installed in the through hole groove 207 in the driving device 20, and the top of the movable rod 102 is movably installed in the inner cavity of the lower half of the fixed rod 101, and the movable rod 102 is The top of the rod 102 is provided with a limiting edge for abutting against the exit of the internal cavity of the fixed rod 101 to prevent the movable rod 102 from being disconnected from the fixed rod 101; the top of the movable rod 102 is fixedly connected to one end of the compression spring 4, and the other end of the compression spring 4 is connected to the top wall of the internal cavity of the fixed rod 101 through the pressure sensor 3. At the same time, a temperature sensor 5 is embedded at the bottom end of the movable rod 102. The temperature sensor 5 is electrically connected to the controller to monitor the temperature of the surrounding medium and generate an electrical signal. The electrical signal is fed back to the processor for multi-data analysis to determine the melt temperature.

[0038] The driving device 2 drives the measuring rod 1 to be inserted into the melt from top to bottom at a fixed speed set by the controller, and passes through the slag liquid level 9, the matte liquid level 10 and the bottom bonding surface 11 in sequence, until the furnace bottom 12. When the resistance value is greater than the set value, the measuring rod 1 stops probing, thereby judging the height of the bottom bonding layer 12. The driving device 2 includes an outer shell 208, a servo motor 203, a driving wheel 201 and a follower wheel 202. The outer shell 208 is fixedly mounted on the top of the mounting bracket 6, and a through hole groove 207 is provided on the outer shell 208. A servo motor 203 is arranged inside the outer shell 208, and the servo motor 203 is connected to the outer shell 208. An encoder 206 is installed, the encoder 206 is electrically connected to the controller, and the output end of the servo motor 203 is connected to the reducer 205, the output end of the reducer 205 is connected to the axle of the driving wheel 201, the driving wheel 201 and the follower wheel 202 jointly clamp the ruler-gauge rod 1, and the follower wheel 202 is provided to cooperate with the driving wheel 201 to clamp the ruler-gauge rod 1, so as to ensure that the driving wheel 201 fits the ruler-gauge rod 1, and thus can provide a stable driving friction force; positioning rollers 204 are provided on both sides of the notch near the through hole groove 207 at the bottom of the outer shell 208, which are used to constrain the ruler-gauge rod 1 to maintain a vertical state.

[0039] Since the gauge rod 1 is extended into the melt, the pressures exerted on the gauge rod 1 by different layers of melt are different. At this time, the force change of the gauge rod 1 can be detected by the pressure sensor 3. According to the different viscosities of different melts, the force change is different. At the same time, resistance analysis is performed based on the data fed back to the controller by the pressure sensor 3 in the gauge rod 1 to judge the melt heights of different layers.

[0040] See also Figure 6 , which is an example of the results of a single test on the screen display. It can be clearly observed that different melt surface layers will produce different pressure changes on the gauge rod 1. There will be an inflection point of force on the graph. Figure 6 The data analysis of the horizontal and vertical coordinates can be used to determine the height of the melt in different layers.

[0041] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-layer melt gauge device, comprising a gauge rod (1), a driving device (2) and a mounting bracket (6), wherein the mounting bracket (6) is mounted on a platform support plate (8), and the gauge rod (1) extends into a melt furnace through a gauge hole (7) on the platform support plate (8) to detect the liquid level; the driving device (2) is fixedly arranged on the top of the mounting bracket (6), characterized in that: The measuring rod (1) comprises a fixed rod (101) and a movable rod (102); the fixed rod (101) is movably mounted inside a through hole groove (207) in a driving device (2) and is driven to rise and fall by the driving device (2); the top end of the movable rod (102) is movably mounted in an internal cavity of a lower half of a rod body of the fixed rod (101); a pressure sensor (3) is provided on the top wall of the cavity at the bottom of the fixed rod (101); and a controller and a screen display are also included; the pressure sensor (3), the driving device (2) and the screen display are electrically connected to the controller respectively.

2. A multi-layer melt gauge device according to claim 1, characterized in that: The controller is first connected to the DCS, and then connected to the screen display by the DCS, so as to realize remote control.

3. The multi-layer melt gauge device according to claim 1, characterized in that: The top end of the movable rod (102) is fixedly connected to one end of a compression spring (4), and the other end of the compression spring (4) is connected to the top wall of the internal cavity of the fixed rod (101) via a pressure sensor (3).

4. The multi-layer melt gauge device according to claim 1, characterized in that: The driving device (2) comprises an outer shell (208), a servo motor (203), a driving wheel (201) and a follower wheel (202); the outer shell (208) is fixedly mounted on the top of the mounting bracket (6); the through hole groove (207) is provided on the outer shell (208); a servo motor (203) is arranged inside the outer shell (208); an encoder (206) is connected and installed on the servo motor (203); the encoder (206) is electrically connected to a controller; the output end of the servo motor (203) is connected to a reducer (205); the output end of the reducer (205) is connected to the wheel axle of the driving wheel (201); the driving wheel (201) and the follower wheel (202) jointly clamp the ruler-checking rod (1).

5. A multi-layer melt gauge device according to claim 4, characterized in that: The bottom of the outer shell (208) is provided with positioning rollers (204) on both sides of the notch near the through hole (207) for constraining the ruler-gauge rod (1) to maintain a vertical state, and the outer wall of the positioning roller (204) is provided with an arc-shaped positioning groove adapted to the outer wall of the ruler-gauge rod (1).

6. The multi-layer melt gauge device according to claim 1, characterized in that: The top end of the movable rod (102) is provided with a limiting outer convex edge, and the lower end of the cavity of the fixed rod (101) is provided with a limiting inner convex edge, and the limiting outer convex edge is located above the limiting inner convex edge for preventing disengagement and limiting.

7. The multi-layer melt gauge device according to claim 1, characterized in that: A temperature sensor (5) is embedded at the bottom end of the movable rod (102), and the temperature sensor (5) is electrically connected to the controller.

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