CN212871880U

CN212871880U - Multi-point type electric sampling device for electric furnace for producing low-carbon manganese-silicon alloy

Info

Publication number: CN212871880U
Application number: CN202022218313.8U
Authority: CN
Inventors: 胡长刚; 常拴拴; 赵德春; 姜明玉
Original assignee: Wuhai Sanmei International Mining Co Ltd
Current assignee: Wuhai Sanmei International Mining Co Ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-04-02
Anticipated expiration: 2030-10-09

Abstract

The utility model discloses a multi-point electric sampling device for an electric furnace for producing low-carbon manganese-silicon alloy, which comprises a sampling assembly and other structures; the automatic sampling device is characterized in that a height adjusting assembly is arranged at the upper end of the base, a rotating assembly is arranged at the top end of the height adjusting assembly, a slide rail is vertically and fixedly connected to the side wall of the top end of the rotating assembly, the slide rail extends along the length direction and penetrates through the upper end and the lower end of the slide rail, a screw rod is arranged in the slide rail and extends along the length direction of the slide rail, two ends of the screw rod are respectively connected with the inner wall close to the slide rail in a switching mode, the screw rod is in transmission connection with a first driving motor, a limiting seat is in threaded connection with the screw rod, the lower end; the utility model discloses effectively realized using electric operation to replace manual operation's conversion, and then avoided the workman directly to use long shovel to take a sample and bring the potential safety hazard to and make the staff get to be in eminence or the iron specimen in a distance and put convenient and fast more.

Description

Multi-point type electric sampling device for electric furnace for producing low-carbon manganese-silicon alloy

Technical Field

The utility model relates to an iron-making field, in particular to multi-point type electric sampling device for a low-carbon manganese-silicon alloy electric furnace.

Background

Iron-making, namely extracting metallic iron from iron-containing minerals (mainly iron oxides), mainly comprises a blast furnace method, a direct reduction method, a smelting reduction method and a plasma method.

The existing iron-making mode generally adopts electric furnace iron-making, blast furnace iron-making and the like, and in the iron-making process, the quality of the thick and thin iron water and the molten iron is very important to how to effectively control the quality of the thick and thin iron water and the molten iron, in the iron-making process, technicians mainly realize the control of the thick and thin iron water and the quality by adjusting the proportion of raw materials, therefore, the proportion of the adjusted raw materials is an especially important link in the iron-making process, however, the proportion of the adjusted raw materials needs to collect and sample the molten iron just discharged from the furnace, and the sampled iron is tested and detected, so that the proportion of ingredients is adjusted in time.

Traditional molten iron sampling device is the shovel of long handle usually, and the stokehold workman takes a sample the molten iron through the shovel of holding long handle, but adopts traditional long handle shovel to have following those problems: firstly, a worker directly holds a long shovel to perform sampling, so that potential safety hazards exist, and the sampling at a high place or a far place is not convenient enough; second, traditional sampling device once takes a sample can only take a sample to a point location, if need take a sample to different point locations still need stokehold staff repeated above-mentioned sample step many times, wastes time and energy, reduces work efficiency.

Disclosure of Invention

An object of the utility model is to provide a production low carbon manganese silicon alloy electric stove is with multi-point type electronic sampling device can effectively solve the problem of mentioning in the above-mentioned background art.

The utility model adopts the technical scheme as follows: a multi-point electric sampling device for producing a low-carbon manganese-silicon alloy electric furnace comprises a sampling assembly, a rotating assembly, a height adjusting assembly and a base; the upper end of base is equipped with the altitude mixture control subassembly, the top of altitude mixture control subassembly is equipped with rotating assembly, the perpendicular rigid coupling of rotating assembly top lateral wall has the slide rail, the slide extends and the slide link up the slide on the slide rail lower extreme along length direction on the slide rail, be equipped with screw rod and screw rod in the slide and extend along slide length direction, the both ends of screw rod respectively with the close inner wall switching of slide, screw rod transmission is connected with a driving motor, threaded connection has the lower extreme of spacing seat and the lower extreme slide sliding adaptation of slide rail on the screw rod, the lower extreme rigid coupling of spacing seat has the sampling subassembly.

Furthermore, the height adjusting assembly comprises a vertical beam, a driving cavity, a transmission gear, a driving rod and a second driving motor, wherein a rack is distributed on one side wall of the vertical beam along the length direction, the transmission gear is meshed and connected with the rack of the vertical beam, the transmission gear is arranged in the driving cavity, the driving rod is concentrically assembled in the center of the transmission gear, and two ends of the driving rod are respectively connected with the side wall of the inner cavity of the driving cavity in a switching manner; sliding arms are fixedly connected to the left side wall and the right side wall of the lower end of the driving cavity respectively, sliding grooves are formed in the left side wall and the right side wall of the vertical beam along the length direction, and the sliding grooves in the left end and the right end of the vertical beam are matched with the sliding arms in the left end and the right end of the driving cavity in a sliding mode respectively; the driving rod is connected with a second driving motor in a transmission mode, the second driving motor is fixedly connected with the driving cavity, and the vertical beam is vertically and fixedly connected to the upper end of the base.

Further, the rotating assembly comprises an upright post, a driving wheel, a driven wheel, a bearing plate and a third driving motor; the top end of the height adjusting assembly is provided with a bearing plate, one side of the upper end of the bearing plate is in switching connection with an upright post, a slide rail is vertically arranged on the side wall of the top end of the upright post, the outer wall of the lower end of the upright post is sleeved with a driving wheel, the side wall of the driving wheel is in meshing connection with a driven wheel, and the lower end of the driven wheel is in switching connection with; and a power transmission shaft of the third driving motor can rotatably penetrate through the bearing plate and is concentrically and fixedly connected with a driven wheel at the upper end of the bearing plate.

Furthermore, the sampling assembly comprises a top plate, a bottom plate, a middle plate, a threaded shaft, a telescopic rod, a sample loading cavity, a blocking plate and a fourth driving motor, wherein the top plate, the middle plate and the bottom plate are sequentially arranged from top to bottom, the threaded shaft is in threaded connection with the middle plate in a vertical mode, the lower end of the threaded shaft is in switching connection with the bottom plate, and the upper end of the threaded shaft is rotatably connected with a power output shaft of the third driving motor through the top plate; the lower end of the middle plate is fixedly connected with a plurality of telescopic rods in an equiangular vertical array by taking the middle point of the middle plate as the center of a circle, and the lower ends of the telescopic rods movably penetrate through the bottom plate and are fixedly connected with a blocking plate; a sample loading cavity is concentrically sleeved on the threaded shaft between the bottom plate and the blocking plate, the upper end of the sample loading cavity is fixedly connected with the bottom plate, and the bottom end of the sample loading cavity is movably matched with the telescopic rod.

Furthermore, the sample loading cavity, the blocking plate and the telescopic rod are all made of refractory materials.

Further, a high-temperature-resistant protective cover is installed on the outer side of the fourth driving motor.

The beneficial effects of the utility model reside in that:

this practicality is through combining together sampling subassembly, rotating assembly, altitude mixture control subassembly, slide rail, screw rod and electrical equipment, has effectively realized using electrical operation to replace manual operation's conversion, and then has avoided the workman directly to use long shovel to take a sample and bring the potential safety hazard, mutually supports through between sampling subassembly, rotating assembly, altitude mixture control subassembly, slide rail, the screw rod simultaneously, makes the staff get to be in eminence or the iron appearance in a distance and puts more convenient and fast.

The utility model discloses an install the sampling subassembly, can effectual realization once take a sample can take a sample to a plurality of positions, avoid adopting current device to need the repeated sampling step many times, labour saving and time saving improves work efficiency.

The utility model discloses an install altitude mixture control subassembly, can guarantee that the staff can be smooth will be in eminence or the sample iron of low department and take a sample the collection to effectively stop the manual work and take a sample the condition emergence that easily takes place danger, effectively cut off the emergence of incident in the source.

The utility model discloses in, can effectually make the sampling subassembly on the slide rail realize rotatory through installation rotating assembly, and then make the sampling subassembly can the multi-angle carry out the iron pattern and gather, increase the utility model discloses a practicality.

Drawings

Fig. 1 is a schematic view of the side three-dimensional structure of the present invention.

Fig. 2 is a schematic view of the upper end three-dimensional structure of the present invention.

Fig. 3 is a schematic view of a partial three-dimensional structure of the present invention.

Fig. 4 is a schematic perspective view of the sampling assembly.

FIG. 5 is a perspective view of the sampling assembly in assembled configuration.

In the figure: the device comprises a sampling assembly 1, a top plate 1-1, a bottom plate 1-2, a middle plate 1-3, a threaded shaft 1-4, a telescopic rod 1-5, a sample loading cavity 1-6, a blocking plate 1-7, a fourth driving motor 1-8, a rotating assembly 2, an upright column 2-1, a driving wheel 2-2, a driven wheel 2-3, a bearing plate 2-4, a third driving motor 2-5, a height adjusting assembly 3, a vertical beam 3-1, a driving cavity 3-2, a transmission gear 3-3, a driving rod 3-4, a second driving motor 3-5, a base 4, a sliding rail 5, a screw rod 6, a first driving motor 7, a limiting seat 8, a connecting rod 9, a rack 10, a sliding arm 11 and a supporting seat 12.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings, which are only used for illustrating the technical solutions of the present invention and are not limited.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

With reference to fig. 1 to 5, a multi-point electric sampling device for an electric furnace for producing low-carbon manganese-silicon alloy is schematically shown, and comprises a sampling assembly 1, a rotating assembly 2, a height adjusting assembly 3 and a base 4; height adjusting subassembly 3 is installed to the upper end of base 4, rotating assembly 2 is installed through supporting seat 12 on height adjusting subassembly 3's the top, 2 top lateral walls of rotating assembly vertical welding have slide rail 5, slide rail 5 goes up the slide and extends and the slide link up slide rail 5 upper and lower ends, be equipped with screw rod 6 and screw rod 6 in the slide and extend along slide length direction, the both ends of screw rod 6 respectively with the close inner wall switching of slide, the transmission of screw rod 6 is connected with a driving motor 7, threaded connection has the lower extreme of spacing seat 8 and the lower extreme slide sliding adaptation of slide rail 5 on the screw rod 6, the lower extreme of spacing seat 8 has sampling component 1 through connecting rod 9 welding. The utility model discloses a with sampling subassembly 1, rotating assembly 2, altitude mixture control subassembly 3, slide rail 5, screw rod 6 and electrical equipment combine together, effectively realized using the conversion that electrical operation replaces manual operation, and then avoid the workman directly to use the length shovel to take a sample and bring the potential safety hazard, simultaneously through sampling subassembly 1, rotating assembly 2, altitude mixture control subassembly 3, slide rail 5, mutually supporting between the screw rod 6, make the staff get to be in eminence or the iron appearance in a distance and put convenient and fast more.

Preferably, the height adjusting assembly 3 comprises a vertical beam 3-1, a driving cavity 3-2, a transmission gear 3-3, a driving rod 3-4 and a second driving motor 3-5, a rack 10 is distributed on one side wall of the vertical beam 3-1 along the length direction, the rack 10 of the vertical beam 3-1 is connected with the transmission gear 3-3 in a meshed mode, the transmission gear 3-3 is arranged in the driving cavity 3-2, the driving rod 3-4 is concentrically assembled at the center of the transmission gear 3-3, and two ends of the driving rod 3-4 are respectively connected with the inner cavity side wall of the driving cavity 3-2 in a switching mode; the left side wall and the right side wall of the lower end of the driving cavity 3-2 are respectively in bolted connection with a sliding arm 11, the left side wall and the right side wall of the vertical beam 3-1 are both provided with sliding grooves along the length direction, and the sliding grooves at the left end and the right end of the vertical beam 3-1 are respectively in sliding fit with the sliding arms 11 at the left end and the right end of the driving cavity 3-2; the driving rod 3-4 is connected with a second driving motor 3-5 in a transmission mode, the second driving motor 3-5 is connected with the driving cavity 3-2 through bolts, and the vertical beam 3-1 is vertically welded to the upper end of the base 4.

By means of the technical scheme, the use principle of the height adjusting group is as follows: when the device is used, a worker starts the second driving motor 3-5, the second driving motor 3-5 drives the transmission gear 3-3 to rotate, the transmission gear 3-3 can effectively guarantee that the sliding arm 11 drives the driving cavity 3-2 to slide up and down under the limiting effect of the sliding arm 11, and finally indirectly drives other mounting equipment at the upper end to move up and down, so that the worker can smoothly sample and collect sample iron at a high position or a low position, the situation that the manual sampling is easy to cause danger is effectively avoided, and the occurrence of safety accidents is effectively cut off from the source.

Preferably, the rotating assembly 2 comprises an upright post 2-1, a driving wheel 2-2, a driven wheel 2-3, a bearing plate 2-4 and a third driving motor 2-5; the top end of the height adjusting component 3 is welded with a supporting seat 12, the upper end of the supporting seat 12 is welded with a bearing plate 2-4, one side of the upper end of the bearing plate 2-4 is in through connection with an upright post 2-1 through a bearing, a sliding rail 5 is vertically welded on the side wall of the top end of the upright post 2-1, the outer wall of the lower end of the upright post 2-1 is sleeved with a driving wheel 2-2, the side wall of the driving wheel 2-2 is in meshed connection with a driven wheel 2-3, and the lower end of the driven wheel 2-3 is in; the lower end of the bearing plate 2-4 is connected with a third driving motor 2-5 through a machine base, and a power transmission shaft of the third driving motor 2-5 can rotatably penetrate through the bearing plate 2-4 and is concentrically and fixedly connected with a driven wheel 2-3 at the upper end of the bearing plate 2-4. When the device is used, a worker starts the second driving motor 3-5 to rotate, the rotating third driving motor 2-5 further drives the driven wheel 2-3 to rotate, the driving wheel 2-2 and the upright post 2-1 are further driven to rotate, and the rotating upright post 2-1 drives the sliding rail 5 and other devices on the sliding rail 5 to rotate. Can effectually make the sampling component 1 on the slide rail 5 realize rotatoryly through installation rotating assembly 2, and then make sampling component 1 can the multi-angle carry out the iron specimen and gather, increase the utility model discloses a practicality.

Preferably, the sampling assembly 1 comprises a top plate 1-1, a bottom plate 1-2, a middle plate 1-3, a threaded shaft 1-4, an expansion link 1-5, a sample loading cavity 1-6, a blocking plate 1-7 and a fourth driving motor 1-8, wherein the top plate 1-1, the middle plate 1-3 and the bottom plate 1-2 are sequentially arranged from top to bottom, the middle plate 1-3 is vertically and threadedly connected with the threaded shaft 1-4, the lower end of the threaded shaft 1-4 is connected with the bottom plate 1-2 in a switching manner, and the upper end of the threaded shaft 1-4 is rotatably connected with a power output shaft of the third driving motor 2-5 through the top plate 1-1; the lower end of the middle plate 1-3 is vertically welded with a plurality of telescopic rods 1-5 in an equiangular array mode by taking the midpoint of the middle plate 1-3 as the circle center, and the lower ends of the telescopic rods 1-5 movably penetrate through the bottom plate 1-2 and are welded with blocking plates 1-7; a sample containing cavity 1-6 is concentrically sleeved on a threaded shaft 1-4 between the bottom plate 1-2 and the blocking plate 1-7, the upper end of the sample containing cavity 1-6 is welded with the bottom plate 1-2, and the bottom end of the sample containing cavity 1-6 is movably matched with the telescopic rod 1-5. Principle of use of the sampling assembly 1: when the sampling assembly 1 is used, after the sampling assembly 1 moves to a designated sampling place, the fourth driving motor 1-8 is started, the power output shaft of the fourth driving motor 1-8 drives the threaded shaft 1-4 to rotate, the middle plate 1-3 is limited by the telescopic rod 1-5, and then the rotating threaded shaft 1-4 drives the middle plate 1-3 to move downwards, so that the middle plate 1-3 moving downwards drives the telescopic rod 1-5 and the blocking plate 1-7 at the lower end of the telescopic rod 1-5 to move downwards, and further the blocking plate 1-7 moving downwards is separated from the lower end of the sample loading cavity 1-6, at the moment, the height adjusting assembly 3 is continuously adjusted, so that molten iron at the lower end further enters the sample loading cavity 1-6 under the extrusion effect, and the molten iron is completely filled into the sample loading cavity 1-6, and controlling the fourth driving motor 1-8 to realize reverse rotation, driving the telescopic rods 1-5 and the baffle at the lower ends of the telescopic rods 1-5 to realize ascending in the reverse rotation, finally enabling the baffle to be in contact with the bottom ends of the sample loading cavities 1-6, stopping molten iron from entering the sample loading cavities 1-6, and finally controlling the height adjusting assembly 3, the rotating assembly 2 and the first driving motor 7 to finish the collection of the iron samples on the sampling assembly 1.

Preferably, the sample containing cavity 1-6, the blocking plate 1-7 and the telescopic rod 1-5 are all made of refractory materials, so that the sampling assembly 1 is prevented from being damaged when contacting molten iron.

Preferably, a high temperature resistant protective cover (not shown in the figure) is installed on the outer side of the fourth driving motor 1-8, so as to prevent the utility model from being damaged by high temperature to the fourth driving motor 1-8 after being used for a long time, and finally prolong the service life of the device.

It should be noted that, the utility model discloses in involve first driving motor 7, second driving motor 3-5, third driving motor 2-5, fourth driving motor 1-8 all with the power generation facility of 220V commercial power (power generation facility is prior art, and no longer describe here, for example power generation facility can adopt the battery, etc.) the electricity connection, first driving motor 7, second driving motor 3-5, third driving motor 2-5, fourth driving motor 1-8 all are connected with control panel (control panel is prior art, and no longer describe here) the electricity simultaneously.

The working principle of the device is as follows: when the device works, firstly, the height of the utility model is effectively adjusted by controlling the height adjusting component 3, the angle of the utility model is effectively adjusted by controlling the rotating component 2, and the positive and negative rotation of the first driving motor 7 is controlled, so that the screw 6 is effectively guaranteed to rotate, and the limiting seat 8 is limited by the slide way at the lower end of the slide rail 5, so that the limiting seat 8 moves to be close to or far away from the vertical beam 3-1, and further the working personnel can conveniently collect and sample iron samples; then, when the sampling assembly 1 moves to a designated sampling place, a fourth driving motor 1-8 is started, a power output shaft of the fourth driving motor 1-8 drives a threaded shaft 1-4 to rotate, the middle plate 1-3 is limited by a telescopic rod 1-5, and then the rotating threaded shaft 1-4 drives the middle plate 1-3 to move downwards, so that the middle plate 1-3 moving downwards drives the telescopic rod 1-5 and a blocking plate 1-7 at the lower end of the telescopic rod 1-5 to move downwards, and further the blocking plate 1-7 moving downwards is separated from the lower end of a sample loading cavity 1-6, at the moment, the height adjusting assembly 3 is continuously adjusted, so that molten iron at the lower end further enters the sample loading cavity 1-6 under the extrusion effect, and the molten iron is completely filled into the sample loading cavity 1-6, and controlling the fourth driving motor 1-8 to realize reverse rotation, driving the telescopic rods 1-5 and the baffle at the lower ends of the telescopic rods 1-5 to realize ascending in the reverse rotation, finally enabling the baffle to be in contact with the bottom ends of the sample loading cavities 1-6, stopping molten iron from entering the sample loading cavities 1-6, and finally controlling the height adjusting assembly 3, the rotating assembly 2 and the first driving motor 7 to finish the collection of the iron samples on the sampling assembly 1.

Although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that various changes and modifications can be made in the embodiments described above, or equivalent changes and modifications can be made to some of the technical features of the embodiments described above, and any changes, equivalents, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A multi-point electric sampling device for producing a low-carbon manganese-silicon alloy electric furnace comprises a sampling assembly, a rotating assembly, a height adjusting assembly and a base; the automatic sampling device is characterized in that a height adjusting assembly is arranged at the upper end of the base, a rotating assembly is arranged at the top end of the height adjusting assembly, a slide rail is fixedly connected to the side wall of the top end of the rotating assembly in a perpendicular mode, the slide rail extends along the length direction and penetrates through the upper end and the lower end of the slide rail, a screw rod is arranged in the slide rail and extends along the length direction of the slide rail, two ends of the screw rod are respectively connected with the inner wall close to the slide rail in a switching mode, a first driving motor is connected to the screw rod in a transmission mode, a limiting seat and the lower end of the limiting seat.

2. The multi-point electric sampling device for the electric furnace for producing the low-carbon manganese-silicon alloy according to claim 1, which is characterized in that: the height adjusting assembly comprises a vertical beam, a driving cavity, a transmission gear, a driving rod and a second driving motor, wherein a rack is distributed on one side wall of the vertical beam along the length direction, the transmission gear is meshed and connected with the rack of the vertical beam and is arranged in the driving cavity, the driving rod is concentrically assembled in the center of the transmission gear, and two ends of the driving rod are respectively connected with the side wall of the inner cavity of the driving cavity in a switching manner; sliding arms are fixedly connected to the left side wall and the right side wall of the lower end of the driving cavity respectively, sliding grooves are formed in the left side wall and the right side wall of the vertical beam along the length direction, and the sliding grooves in the left end and the right end of the vertical beam are matched with the sliding arms in the left end and the right end of the driving cavity in a sliding mode respectively; the driving rod is connected with a second driving motor in a transmission mode, the second driving motor is fixedly connected with the driving cavity, and the vertical beam is vertically and fixedly connected to the upper end of the base.

3. The multi-point electric sampling device for the electric furnace for producing the low-carbon manganese-silicon alloy according to claim 1, which is characterized in that: the rotating assembly comprises an upright post, a driving wheel, a driven wheel, a bearing plate and a third driving motor; the top end of the height adjusting assembly is provided with a bearing plate, one side of the upper end of the bearing plate is in switching connection with an upright post, a slide rail is vertically arranged on the side wall of the top end of the upright post, the outer wall of the lower end of the upright post is sleeved with a driving wheel, the side wall of the driving wheel is in meshing connection with a driven wheel, and the lower end of the driven wheel is in switching connection with; and a power transmission shaft of the third driving motor can rotatably penetrate through the bearing plate and is concentrically and fixedly connected with a driven wheel at the upper end of the bearing plate.

4. The multi-point electric sampling device for the electric furnace for producing the low-carbon manganese-silicon alloy according to claim 1, which is characterized in that: the sampling assembly comprises a top plate, a bottom plate, a middle plate, a threaded shaft, a telescopic rod, a sample loading cavity, a blocking plate and a fourth driving motor, wherein the top plate, the middle plate and the bottom plate are sequentially arranged from top to bottom; the lower end of the middle plate is fixedly connected with a plurality of telescopic rods in an equiangular vertical array by taking the middle point of the middle plate as the center of a circle, and the lower ends of the telescopic rods movably penetrate through the bottom plate and are fixedly connected with a blocking plate; a sample loading cavity is concentrically sleeved on the threaded shaft between the bottom plate and the blocking plate, the upper end of the sample loading cavity is fixedly connected with the bottom plate, and the bottom end of the sample loading cavity is movably matched with the telescopic rod.

5. The multi-point electric sampling device for the electric furnace for producing the low-carbon manganese-silicon alloy according to claim 4, which is characterized in that: the sample loading cavity, the blocking plate and the telescopic rod are all made of refractory materials.

6. The multi-point electric sampling device for the electric furnace for producing the low-carbon manganese-silicon alloy according to claim 4, which is characterized in that: and a high-temperature-resistant protective cover is installed on the outer side of the fourth driving motor.