Molten metal liquid level detection device for smelting furnace

Abstract

The utility model relates to a molten metal liquid level detection device for a smelting furnace, which comprises a probe rod component arranged vertically; the hoisting mechanism is connected with the upper end of the feeler lever assembly, drives the feeler lever assembly to vertically ascend and descend and is in linkage with the lower end of the feeler lever assembly to stretch into or stretch out of a furnace cavity of the smelting furnace. The control unit is used for controlling starting and stopping of the hoisting mechanism; the feeler lever assembly comprises at least two sets of unit feeler levers, the connecting ends of the adjacent unit feeler levers form detachable connection, when the detection device is used, the control unit is independently arranged and used for controlling starting and stopping of the hoisting mechanism, the control unit can be arranged away from the smelting furnace, an operator does not need to control the hoisting mechanism on the site of the smelting furnace, and the detection efficiency is improved. The operating efficiency can be remarkably improved, the operating safety can be ensured, the unit probe rods can be sequentially connected and extend into the hearth to detect the liquid level in the actual use process of the probe rod assembly, the unit probe rods are replaced according to the abrasion condition, and the replacement cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature smelting furnace detection, in particular to a smelting furnace molten metal level detection device. Background Art

[0002] In order to conveniently measure the liquid level or temperature of the molten metal in the furnace chamber, existing smelting equipment such as flash furnaces for metal smelting are generally equipped with detection equipment. The current detection equipment uses a crane to hoist a detection rod, and the crane is manually controlled on site to realize the lifting and lowering of the hoisted detection rod. When the detection rod is extended into the furnace chamber of the smelting furnace and the lower end of the detection rod is in contact with the furnace bottom, the detection rod is hoisted out of the smelting furnace, and the height of the molten metal in the smelting furnace can be measured by measuring the mark of the molten metal on the detection rod.

[0003] However, the detection rod in the prior art is mostly an integral rod. Since the detection rod wears out very quickly, when the detection rod is replaced, the detection rod needs to be replaced as a whole, which makes the maintenance cost of the detection equipment high. In addition, during the existing operation, the operator is required to manually operate the lifting mechanism of the detection equipment on site to implement the lifting of the detection rod, which results in low work efficiency and greater safety risks. Utility Model Content

[0004] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a molten metal level detection device for a smelting furnace, which can facilitate the replacement of the detection rod of the detection device to reduce the replacement cost, and can remotely lift and lower the detection rod of the detection device to improve work efficiency and reduce operational risks.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a molten metal level detection device for a smelting furnace, comprising:

[0006] Probe assembly, vertical arrangement;

[0007] A hoisting mechanism connected to the upper end of the probe assembly, driving the probe assembly to vertically lift and lower the probe assembly and linking the lower end of the probe assembly to extend into or out of the furnace chamber of the smelting furnace;

[0008] A control unit, which is used to control the start and stop of the lifting mechanism;

[0009] The probe rod assembly comprises at least two groups of unit probe rods, and the connecting ends of adjacent unit probe rods form a detachable connection.

[0010] In an optional embodiment of the present invention, a detection unit is provided on the lifting mechanism, and the detection unit is used to detect the lifting tension applied by the lifting mechanism to the probe rod assembly. The detection unit is connected to the control unit, and the control unit controls the start and stop of the lifting mechanism according to the tension signal detected by the detection unit.

[0011] In an optional embodiment of the present invention, the hoisting mechanism is further provided with an anti-top impact mechanism, and when the upper end of the probe rod assembly is combined with the anti-top impact mechanism, the control unit controls the hoisting mechanism to stop.

[0012] In an optional embodiment of the utility model, the connecting ends of adjacent unit probes are respectively provided with a plug-in cap body and a plug-in connector, the plug-in connector is inserted into the plug-in cap body, and radial screws are respectively provided outside the plug-in cap body, and the radial screws pass through the plug-in cap body and the plug-in connector.

[0013] In an optional embodiment of the utility model, the lifting mechanism includes a column, a winch and a lifting rope, the column is installed on the roof platform of the smelting furnace, one end of the lifting rope is connected to the winch, and is connected to the upper end of the probe rod assembly from the top of the column downward through a rope guide mechanism.

[0014] In an optional embodiment of the present invention, the detection unit includes a detection guide wheel and an auxiliary guide wheel, one end of the detection guide wheel is connected to the detection sensor, the lifting rope passes through a channel between the detection guide wheel and the auxiliary guide wheel and abuts against the detection guide wheel, and the detection guide wheel is configured such that when the lifting rope is tightened, the detection sensor can detect a clamping force signal of the detection guide wheel.

[0015] In an optional embodiment of the present invention, an anti-derailment wheel is also arranged in parallel on the side of the detection guide wheel, and the anti-derailment wheel implements guidance and constraint on the lifting rope.

[0016] In an optional embodiment of the utility model, the anti-top impact mechanism includes a trigger rod arranged above the probe rod assembly, the trigger rod and the limit switch form abutment or separation cooperation, the control unit is configured to link the trigger rod and the limit switch to abutment when the upper end of the probe rod assembly abuts against the trigger rod, and the control unit controls the shutdown of the lifting mechanism.

[0017] In an optional embodiment of the present invention, a top block is provided at the upper end of the probe rod assembly, and the top block drives the trigger rod to abut against or separate from the limit switch.

[0018] In an optional embodiment of the present invention, at least one protective ring is provided on the column, and the protective ring is provided around the probe rod assembly.

[0019] By adopting the above technical scheme, the technical effect of the utility model is that when the detection device is in use, a control unit is separately provided for controlling the start and stop of the hoisting mechanism. The control unit can be arranged away from the smelting furnace, and there is no need for operators to control the hoisting mechanism on site of the smelting furnace, which can significantly improve the working efficiency and ensure the working safety. The probe rod assembly includes at least two groups of unit probe rods. In actual use, the unit probe rods can be connected in sequence and extended into the furnace to detect the liquid level. The unit probe rods can be replaced according to the wear condition, which can effectively reduce the replacement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a device for detecting the level of molten metal in a smelting furnace in one embodiment of the utility model;

[0021] Figure 2 This is an enlarged structural view of the upper end of a column of a molten metal level detection device for a smelting furnace in one embodiment of the utility model;

[0022] Figure 3 This is a front view of a detection unit in one embodiment of the utility model;

[0023] Figure 4 It is a side view of a detection unit in one embodiment of the utility model;

[0024] Figure 5 and Figure 6 It is a schematic plan view of two states of assembly of a unit probe rod in one embodiment of the utility model;

[0025] Figure 7 It is a plan view of the assembly of the unit probe rod in another embodiment of the utility model.

[0026] Description of labels:

[0027] Furnace top platform A; detection port a; probe rod assembly 10; unit probe rod 11; plug-in cap body 12; plug connector 13; first through threaded hole 121; second through threaded hole 131; radial screw 14; top block 15; threaded cap 16; threaded rod 17; column 21; winch 22; first pulley block 221; second pulley block 221; third pulley block 223; protective ring 24; bracket 25; support plate 26; baffle 27; detection guide wheel 31; wheel frame 32; detection sensor 33; auxiliary guide wheel 34; anti-de-wire wheel 35; trigger rod 41; limit switch 42. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0029] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0030] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

[0031] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or with other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0032] References throughout this specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification do not necessarily refer to the same embodiment. In addition, the particular features, structures, or characteristics of any specific embodiment of the invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the invention described and illustrated herein may be possible in light of the teachings herein and are to be considered part of the spirit and scope of the invention.

[0033] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0034] In addition, unless otherwise explicitly indicated, any marking arrows in the drawings should be regarded as exemplary only and not limiting. In addition, unless otherwise indicated, the term "or" used herein is generally intended to mean "and / or". In the case where the term is not clear because it is anticipated that the ability to separate or combine is provided, the combination of components or steps will also be regarded as indicated.

[0035] As used in the description herein and throughout the claims that follow, "a", "an", and "the" include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of "in" includes "in" and "on" unless otherwise indicated.

[0036] During the actual smelting operation of metal, the temperature of the smelting plant is very high, especially near the smelting furnace. The production site is often in a state of high temperature and high humidity. However, in actual monitoring of the liquid level and temperature of the molten metal in the smelting furnace is very necessary for the entire process. The existing detection equipment needs to be operated on site, which makes the monitoring operation have a greater safety risk. In addition, since the detection rod frequently contacts with the high-temperature molten metal in the smelting furnace, the molten metal will corrode the detection rod, and the detection rod will also bend and deform, which will cause great wear on the part of the detection rod that contacts the molten metal. The detection rod often needs to be repaired. Replacement is required, but when the whole is replaced, it is not only inconvenient to operate, but also very costly to replace. In this regard, the utility model has made the following improvements: a molten metal level detection device for a smelting furnace, comprising: a probe rod assembly 10, arranged vertically; a hoisting mechanism, connected to the upper end of the probe rod assembly 10, driving the probe rod assembly 10 to vertically lift and lower the probe rod assembly 10 and linking the lower end of the probe rod assembly 10 to extend into or out of the furnace chamber of the smelting furnace; a control unit, which is used to control the start and stop of the hoisting mechanism; the probe rod assembly 10 comprises at least two groups of unit probe rods 11, and the two ends of the adjacent unit probe rods 11 are detachably connected.

[0037] See also Figure 1 In the utility model, the control unit for controlling the hoisting mechanism is improved so that the control unit can be installed at a position far away from the smelting furnace space. The start and stop control of the hoisting mechanism can be implemented through a remote control terminal, such as a control case or a control mobile terminal, thereby improving the actual detection efficiency, avoiding on-site operation, and eliminating operational hazards.

[0038] In one embodiment, the control unit controls the start and stop of the hoisting mechanism through a cable connection to ensure stability, and a PLC control module can be installed on the hoisting mechanism. By remotely issuing control instructions to the PLC control module, the PLC control module controls the start and stop of the hoisting mechanism according to the instructions.

[0039] In one embodiment, see Figure 1 , Figure 5 , Figure 6 and Figure 7 At least two groups of unit probe rods 11 are provided, and the unit probe rods 11 are connected end to end and are convenient to disassemble. The damaged unit probe rods 11 can be replaced according to actual usage conditions, which can significantly reduce the replacement cost.

[0040] In one embodiment of the utility model, a detection unit is provided on the lifting mechanism, and the detection unit is used to detect the lifting tension applied by the lifting mechanism to the probe rod assembly 10. The detection unit is connected to the control unit, and the control unit controls the start and stop of the lifting mechanism according to the tension signal detected by the detection unit.

[0041] When the lifting mechanism implements the lifting operation of the probe rod assembly 10, after the lower end of the probe rod assembly 10 is extended into the furnace chamber of the smelting furnace, the lower end of the probe rod assembly 10 directly rests against the bottom of the smelting furnace. In order to control the lifting mechanism and avoid the tilting problem of the probe rod assembly 10 caused by the probe rod assembly 10 continuing to move downward, a detection unit is provided on the lifting mechanism. When the detection unit detects that the pulling force applied to the probe rod assembly 10 by the lifting mechanism instantly decreases or disappears, it can be determined that the probe rod assembly 10 has been moved down to the right position and the lower end has contacted with the bottom of the smelting furnace. At this time, the control unit sends a control instruction to the PLC control module according to the tension signal detected by the detection unit. The control instruction is sent to the PLC control module remotely, and the PLC control module controls the shutdown of the lifting mechanism according to the instruction.

[0042] In one embodiment of the utility model, in order to avoid the situation where the lifting mechanism lifts the probe rod assembly 10 and hits the top, the lifting mechanism is also provided with an anti-top mechanism. When the upper end of the probe rod assembly 10 is combined with the anti-top mechanism, the control unit controls the lifting mechanism to stop.

[0043] In one embodiment, when the hoisting mechanism drives the probe rod assembly 10 vertically upward, the probe rod assembly 10 is away from the furnace chamber of the smelting furnace until the lower end of the probe rod assembly 10 is completely separated from the furnace chamber of the smelting furnace. In order to prevent the probe rod assembly 10 from rushing out of the hoisting top of the hoisting mechanism, when the upper end of the probe rod assembly 10 is combined with the square punching mechanism, a contact signal is sent to the control unit, and the control unit sends a control instruction to the PLC control module. By remotely sending a control instruction to the PLC control module, the PLC control module controls the shutdown of the hoisting mechanism according to the instruction, thereby avoiding the problem of punching at the upper end of the probe rod assembly 10.

[0044] In one embodiment of the present invention, refer to Figure 5 and Figure 6 , which is also a preferred embodiment, the connecting ends of adjacent unit probes 11 are respectively provided with a plug-in cap body 12 and a plug connector 13, the plug connector 13 is inserted in the plug-in cap body 12, and a radial screw 14 is provided outside the plug-in cap body 12, and the radial screw 14 passes through the plug-in cap body 12 and the plug connector 13 respectively.

[0045] In one embodiment, the probe rod assembly 10 includes two groups of unit probe rods 11, and the two ends of the two groups of unit probe rods 11 are respectively provided with a plug-in cap body 12 and a plug-in connector 13. The plug-in connector 13 of the two groups of unit probe rods 11 is inserted into the plug-in cap body 12, and the connection and fixation of the two groups of unit probe rods 11 can be achieved through the radial screw 14, which is very convenient for disassembly and assembly.

[0046] In one embodiment, see Figure 5 and Figure 6 The outer wall of the plug-in cap body 12 is provided with a first through-threaded hole 121, and the rod end of the plug connector 13 is provided with a second through-threaded hole 131. When the plug connector 13 is inserted into the plug-in cap body 12, the second through-threaded hole 131 is concentric with the first through-threaded hole 121, and then the plug-in cap body 12 is screwed into the second through-threaded hole 131 through the first through-threaded hole 121, thereby realizing the connection of the two sets of unit probe rods 11.

[0047] In another embodiment of the present invention, refer to Figure 7 The probe rod assembly 10 includes two sets of unit probe rods 11 , and threaded caps 16 and threaded rods 17 are respectively disposed at both ends of the two sets of unit probe rods 11 .

[0048] In one embodiment, the threaded rod 17 is screwed into the threaded cap 16 to achieve the connection between the two groups of unit probe rods 11. In this implementation, the unit probe rod 11 at the upper position needs to be improved. When the upper end of the probe rod 11 of the unit threaded cap 16 at the upper position is connected to the lifting mechanism, the upper end of the unit probe rod 11 should be rotatably connected to the lifting mechanism. When the lower unit probe rod 11 needs to be replaced, the new unit probe rod 11 is placed at the bottom. After the upper and lower ends of the two groups of unit probe rods 11 are combined, the replacement can be achieved by rotating the upper unit probe rod 11.

[0049] In a preferred embodiment of the utility model, in order to implement the lifting of the probe rod assembly 10 so that the probe rod assembly 10 remains in a vertical state and extends into or out of the furnace chamber of the smelting furnace under the action of its own gravity, the lifting mechanism includes a column 21, a winch 22 and a lifting rope 23, and the column 21 is installed on the furnace top platform A of the smelting furnace, one end of the lifting rope 23 is connected to the winch 22, and is connected to the upper end of the probe rod assembly 10 from the top of the column 21 downward through the rope guide mechanism of the column 21.

[0050] In one embodiment, see Figure 1 The columns 21 can be arranged in one group or two groups. When two groups of columns 21 are arranged, a telescopic mechanism can be arranged between the two groups of columns 21, so that the two groups of columns 21 are in a telescopic state, and then the height of the columns 21 can be adjusted according to the usage, thereby adjusting the height stroke of the lifting mechanism for the probe rod assembly 10 to ensure that the lower end of the probe rod assembly 10 can be completely separated from the detection port a of the smelting furnace, which is convenient for measurement and also convenient for disassembly, assembly and replacement of the probe rod assembly 10.

[0051] In one embodiment, see Figure 1 The guide rope mechanism includes at least multiple groups of sliding rods. During actual installation, the winch 22 is installed on the column 21 through a mounting bracket. The first and second pulley groups 221 and 222 are installed on the column 21 near the winch 22. At least two groups of third pulley groups 223 are arranged at the top of the column 21. After one end of the lifting rope 23 is connected to the winding roller of the winch 22, it abuts against the first pulley group 221 and is wound around the second pulley group 222, so that the lifting rope 23 is vertically upward along the column 21 and abuts against the two groups of third pulley groups 223 at the top of the column 21, and then one end of the lifting rope 23 is vertically downward connected to the upper end of the probe assembly 10 to implement the lifting and lowering of the probe assembly 10.

[0052] In one embodiment of the present invention, refer to Figure 3 and Figure 4In order to determine whether the probe rod assembly 10 has been lowered into place, the detection unit includes a detection guide wheel 31 and an auxiliary guide wheel 34. One end of the detection guide wheel 31 is connected to the detection sensor 33. The lifting rope 23 passes through the channel between the detection guide wheel 31 and the auxiliary guide wheel 34 and abuts against the detection guide wheel 31. The detection guide wheel 31 is configured to detect the compression force signal of the detection guide wheel 31 when the lifting rope 23 is tightened.

[0053] In one embodiment, the detection guide wheel 31 and the auxiliary guide wheel 34 are rotatably mounted on the wheel frame 32, and two groups of auxiliary guide wheels 34 are provided. The two groups of auxiliary guide wheels 34 are parallel to the wheel core of the detection guide wheel 31 and are both arranged horizontally.

[0054] In one embodiment, the wheel frame 32 of the detection unit can be installed at the rope outlet position of the winch 22.

[0055] In one embodiment, see Figure 3 and Figure 4 The two sets of auxiliary guide wheels 34 are respectively arranged at the upper and lower positions of the detection guide wheel 31, and the lifting rope 23 passes through the channel between the detection guide wheel 31 and the auxiliary guide wheel 34 and rests on the detection guide wheel 31. When the lifting probe rod assembly 10 moves up and down, under the action of the gravity of the probe rod assembly 10 itself, the tensile stress of the lifting rope 23 applies horizontal pressure to the detection guide wheel 31, and the horizontal pressure can be obtained from the detection sensor 33. Once the probe rod assembly 10 contacts the bottom of the smelting furnace, the tensile stress of the lifting rope 23 will instantly decrease to zero, and the horizontal pressure applied to the detection guide wheel 31 by the tensile stress of the lifting rope 23 will instantly decrease to zero. The control unit obtains the pressure signal according to the rod detection sensor 33, and sends a control instruction to the PLC control module. The control instruction is sent to the PLC control module remotely, and the PLC control module controls the shutdown of the lifting mechanism according to the instruction.

[0056] In one embodiment, see Figure 5 In order to prevent the lifting rope 23 in the detection guide wheel 31 and the auxiliary guide wheel 34 from moving out of the constraint area and to prevent the rope from falling off, an anti-falling wheel 35 is also arranged parallel to the side of the detection guide wheel 31, and the anti-falling wheel 35 implements guiding constraints on the lifting rope 23.

[0057] Further, see Figure 2 In order to prevent the top impact problem from occurring at the upper end of the probe rod assembly 10, the anti-top impact mechanism includes a trigger rod 41 arranged above the probe rod assembly 10, and the trigger rod 41 and the limit switch 42 form abutment or separation cooperation. The control unit is configured to link the trigger rod 41 and the limit switch 42 to abut when the upper end of the probe rod assembly 10 abuts against the trigger rod 41, and the control unit controls the shutdown of the lifting mechanism.

[0058] In one embodiment, one end of the trigger rod 41 is hinged on the column 21, and a torsion spring is provided on the hinge shaft of the trigger rod 41. The torsion spring enables the trigger rod 41 to maintain a constant position under the action of an external force. The limit switch 42 is arranged beside the trigger rod 41. When the lifting rope 23 lifts the probe rod assembly 10 and moves upward, the upper end of the probe rod assembly 10 drives the trigger rod 41 to rotate around the axis until the trigger rod 41 presses the limit switch 42. When the limit switch 42 is actuated, the control unit can issue a control command to stop the winch 22 of the lifting mechanism to avoid the problem of the probe rod assembly 10 hitting the top.

[0059] Specifically, a top block 15 is disposed at the upper end of the probe rod assembly 10 , and the top block 15 drives the trigger rod 41 to abut against or separate from the limit switch 42 .

[0060] In one embodiment, see Figure 2 A bracket 25 is provided on the column 21, and a support plate 26 is provided on the bracket 25. A through hole is provided on the support plate 26 for the lifting rope 23 to pass through. When the lifting rope 23 lifts the probe rod assembly 10 and moves upward, the lifting rope 23 passes through the through hole on the support plate 26 until the top block 15 at the upper end of the probe rod assembly 10 drives the support plate 26 to move upward, so that the support plate 26 abuts against the trigger rod 41 to drive the trigger rod 41 to trigger the limit switch 42.

[0061] In one embodiment, a baffle 27 is further provided on the column 21, and the baffle 27 is arranged above the bracket 25. When the limit switch 42 fails, the baffle 27 can limit the upward movement of the probe rod assembly 10 to avoid the problem of the probe rod assembly 10 hitting the top.

[0062] In one embodiment, the top block 15 and the upper end of the probe assembly 10 may be connected via a steel wire rope or a steel chain.

[0063] In one embodiment, at least one protective ring 24 is disposed on the column 21 , and the protective ring 24 is disposed around the probe assembly 10 .

[0064] In one embodiment, 2 to 4 protective rings 24 may be spaced apart along the length direction of the column 21 , which can effectively prevent the detection rod assembly 10 from tipping over when there is no tension from the lifting rope 23 , thereby constraining the detection rod assembly 10 .

[0065] In short, the utility model transforms the entire detection device and separately sets a control unit for controlling the start and stop of the hoisting mechanism. The control unit can be arranged far away from the smelting furnace, and there is no need for operators to control the hoisting mechanism on site of the smelting furnace, which can significantly improve the operating efficiency and ensure the safety of the operation. The probe rod assembly 10 includes at least two groups of unit probe rods 11. In actual use, the unit probe rods 11 can be connected in sequence and extended into the furnace to detect the liquid level. The unit probe rods 11 can be replaced according to the wear condition, which can effectively reduce the replacement cost.

[0066] The above description of the illustrated embodiments of the present invention (including the contents described in the Abstract) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and appreciated by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments described in the present invention, and these modifications will be within the spirit and scope of the present invention.

[0067] Systems and methods have been generally described herein as details that aid in understanding the present invention. In addition, various specific details have been given to provide an overall understanding of embodiments of the present invention. However, those skilled in the relevant art will recognize that embodiments of the present invention may be practiced without one or more of the specific details, or may be practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusion with various aspects of embodiments of the present invention.

[0068] Thus, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the foregoing disclosure, and it should be understood that in some cases, some features of the invention will be employed without the corresponding use of other features without departing from the scope and spirit of the proposed invention. Therefore, many modifications may be made to adapt a particular environment or material to the essential scope and spirit of the invention. The invention is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the invention will be determined solely by the appended claims.

Claims

1. A smelting furnace molten metal level detection device, characterized in that: include: Probe assembly, vertical arrangement; A hoisting mechanism connected to the upper end of the probe assembly, driving the probe assembly to vertically lift and lower the probe assembly and linking the lower end of the probe assembly to extend into or out of the furnace chamber of the smelting furnace; A control unit, the control unit is used to control the start and stop of the hoisting mechanism; The probe rod assembly comprises at least two groups of unit probe rods, and the connecting ends of adjacent unit probe rods form a detachable connection.

2. The molten metal level detection device for a smelting furnace according to claim 1, characterized in that: The hoisting mechanism is provided with a detection unit, which is used to detect the hoisting tension applied by the hoisting mechanism to the probe assembly. The detection unit is connected to the control unit, and the control unit controls the start and stop of the hoisting mechanism according to the tension signal detected by the detection unit.

3. The molten metal level detection device for a smelting furnace according to claim 1, characterized in that: The hoisting mechanism is also provided with an anti-collision mechanism. When the upper end of the probe rod assembly is combined with the anti-collision mechanism, the control unit controls the hoisting mechanism to stop.

4. The molten metal level detection device for a smelting furnace according to claim 1, characterized in that: The connecting ends of adjacent unit probes are respectively provided with a plug cap body and a plug connector, the plug connector is inserted in the plug cap body, and radial screws are arranged outside the plug cap body, and the radial screws pass through the plug cap body and the plug connector respectively.

5. The molten metal level detection device for a smelting furnace according to claim 2, characterized in that: The hoisting mechanism includes a column, a winch and a hoisting rope. The column is installed on the roof platform of the smelting furnace. One end of the hoisting rope is connected to the winch and is connected to the upper end of the probe assembly from the top of the column downward through a rope guide mechanism.

6. The device for detecting the level of molten metal in a smelting furnace according to claim 5, characterized in that: The detection unit includes a detection guide wheel and an auxiliary guide wheel, one end of the detection guide wheel is connected to the detection sensor, the lifting rope passes through the channel between the detection guide wheel and the auxiliary guide wheel and abuts against the detection guide wheel, and the detection guide wheel is configured so that when the lifting rope is tightened, the detection sensor can detect the compression force signal of the detection guide wheel.

7. The molten metal level detection device for a smelting furnace according to claim 6, characterized in that: An anti-derailment wheel is also arranged in parallel on the side of the detection guide wheel, and the anti-derailment wheel implements guidance and constraint on the lifting rope.

8. The device for detecting the level of molten metal in a smelting furnace according to claim 3, characterized in that: The anti-top impact mechanism includes a trigger rod and a limit switch arranged above the probe rod assembly, and the trigger rod and the limit switch form abutment or separation cooperation. The control unit is configured to link the trigger rod and the limit switch to abutment when the upper end of the probe rod assembly abuts against the trigger rod, and the control unit controls the lifting mechanism to stop.

9. The molten metal level detection device for a smelting furnace according to claim 8, characterized in that: A top block is disposed at the upper end of the probe rod assembly, and the top block drives the trigger rod to abut against or separate from the limit switch.

10. The device for detecting the level of molten metal in a smelting furnace according to claim 5, characterized in that: A protective ring is arranged on the column, and the protective ring is arranged around the probe rod assembly.

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