926results about "Furnace components" patented technology

The invention belongs to the technical field of electric furnace temperature monitoring, and particularly discloses a distributed optical fiber temperature measurement calibration and early warning method avoiding interference of an electric furnace cooling pipe. The influence of the cooling pipe on the temperature sensing point is quantified according to the heat flux density ratio between the temperature sensing point and the cooling pipe, and the interfered temperature sensing point is screened based on the influence; the fitting temperature of the interfered temperature sensing point is corrected based on heat conduction loss or flow deviation of the cooling pipe; identifying peak temperature sensing points, and removing temperature sensing points with the gradient of the peripheral thermal field lower than a peak threshold in the heat affected area of the cooling pipe; performing early warning judgment based on the temperature rise rate of the peak temperature sensing point and a dynamic early warning threshold value; noise data in early warning judgment is eliminated based on the simulated heating rate; and finally, a temperature change curve of each temperature sensing point is smoothed based on the heat flow conservation constraint of the thermal field. According to the method, accurate monitoring of the electric furnace temperature under the influence of the electric furnace cooling pipe is achieved, and powerful support is provided for efficient production and safe operation of the electric furnace.

The invention relates to the field of semiconductor manufacturing equipment, in particular to a vertical furnace door sealing safety mechanism which comprises a lifting driving device, an inflation sealing ring and an inflation control system, and the inflation control system comprises a gap detection module, a material response model module, a temperature compensation module and an execution module. By constructing the multi-parameter coupling model among the gap size, the material performance, the temperature field and the inflation parameters, predictability and controllability of the sealing state are achieved, and the technical contradiction that the cold-state sealing integrity and the hot-state overpressure risk cannot be considered at the same time in a traditional fixed-pressure inflation mode is solved; the adaptability and safety of a sealing system under the variable-temperature working condition are remarkably improved, and the problems that according to a traditional sealing mode, an O-shaped sealing ring is poor in sealing performance and prone to aging due to the fact that the operation precision of a lifting device and the detection precision of a travel switch are reduced are solved.

The invention relates to a wire annealing process (1) for annealing a wire (7), in particular a metallic wire, in a continuous process with two contact discs (2, 3), an annealing section (4) arranged between them and annealing media for annealing the wire (7) in the annealing section (4). The wire annealing furnace (1) further comprises a first temperature sensor (9) for generating at least one first temperature measurement for the temperature of the wire (7) and a control device for controlling the temperature of the wire (7) to a setpoint temperature value, which is configured to control the annealing power generated by the annealing media as a function of the at least one first temperature measurement value such that the first temperature measurement value is essentially equal to the setpoint temperature value. The setpoint temperature value corresponds to a recrystallization temperature of the wire (7). In this way it is possible to set and maintain the temperature of the wire (7) in the annealing section (4) as precisely as possible at the value of the desired recrystallization temperature.

The furnace door control structure comprises a furnace door opening and closing assembly for controlling a furnace door to move relative to a furnace opening, so that the furnace opening is opened or closed; the furnace door opening and closing assembly is connected with the furnace door through a plurality of fine adjustment assemblies of the furnace door, each fine adjustment assembly comprises a rotating part connected with the furnace door and a positioning part connected with the furnace door opening and closing assembly, and the positioning parts and the rotating parts are controlled by adjusting parts to rotate relatively around a rotating shaft. And the angle of the furnace door can be adjusted in multiple directions relative to the furnace opening. The invention provides a furnace door control structure with multi-stage adjustment and accurate positioning functions to solve the problems that in existing PECVD equipment, fitting precision of a furnace door and a furnace opening is insufficient, sealing performance is poor, and heat is prone to leakage. According to the structure, the furnace door can open or close the furnace mouth through the furnace door opening and closing assembly, and the furnace door can be subjected to micron-order posture correction in a three-dimensional space by combining multi-dimensional angle adjustment of the fine adjustment assembly, so that the fitting precision of the furnace door and the edge of the furnace mouth is remarkably improved.

The invention discloses a temperature prediction method and device and a readable storage medium, and relates to the technical field of data processing. The temperature prediction method comprises the following steps: acquiring M time periods corresponding to the heating furnace and a furnace temperature prediction model, wherein M is an integer greater than 1; based on M groups of operation data corresponding to the M time periods, a first input data set of the furnace temperature prediction model is determined, and the M groups of operation data are in one-to-one correspondence with the M time periods; based on N historical input data sets of the furnace temperature prediction model, data updating processing is conducted on the first input data set to obtain a second input data set, and N is an integer larger than 1; and inputting the second input data set into the furnace temperature prediction model, and determining temperature prediction data of the heating furnace. And the temperature prediction accuracy of the heating furnace is improved.

The utility model relates to the technical field of refractory bricks, in particular to a refractory brick with a splicing structure, which comprises a refractory brick main body, an upper splicing piece is integrally arranged above the refractory brick main body, a lower splicing piece is integrally arranged below the refractory brick main body, and the upper splicing piece and the lower splicing piece are arranged in a staggered manner. The upper splicing pieces and the lower splicing pieces are of an engaged matching structure, clamping grooves are formed between the upper splicing pieces and the lower splicing pieces correspondingly, clamping pieces are clamped between the clamping grooves in the same layer, and heat dissipation grooves are formed in the front face and the rear face of the refractory brick body correspondingly. According to the refractory brick with the splicing structure, the splicing pieces clamped with each other are arranged above and below the refractory brick, meanwhile, the refractory brick is spliced in a staggered mode, integrity is higher, the splicing pieces are stable in structure and not prone to damage, and splicing stability is ensured. According to the refractory brick with the splicing structure, the penetrating clamping pieces are arranged between the splicing pieces, the clamping pieces are of a steel bar structure, and the structural strength of refractory brick splicing can be enhanced.

An electric arc furnace (10) usable for melting a metal charge (M), the electric arc furnace (10) comprising a vessel (11) having at least one peripheral wall (20) with a top opening (21), a side slag discharge opening (22) and a side input opening (43). A selectively openable roof (15) can be placed over the top opening (21) of the vessel (11), the roof (15) having a central portion (30) with one or more through holes (31) through which electrodes (32) for melting the metal charge (M) can be inserted to provide clearance.

The application discloses a kind of high-temperature-resistant impact-resistant heat-absorbing heat-insulating composite ceramic brick and its preparation method and application, the ceramic composite brick includes heat-insulating layer and heat-absorbing layer;The main component of the heat-insulating layer is vacuum nanometer heat-insulating ceramic particles and alloy metal particles containing one or more of tungsten, cobalt, molybdenum or vanadium elements;The main component of the heat-absorbing layer is 3N grade and above high-purity alumina and black pigment;The components of the heat-insulating layer and the heat-absorbing layer are filled in the same mold in sections, and then are pressed to form a composite.The heat-insulating layer not only has excellent heat-insulating performance, but also has good toughness and impact resistance;The heat-absorbing layer can quickly absorb heat and accumulate heat, the temperature rising speed in the furnace is increased by more than 30%, the set temperature is quickly reached, the heat-insulating performance is increased by more than 2 times, and has good practical value and important energy-saving and environmental protection social value.

The application discloses a multi-channel shaft kiln for calcining magnesite, wherein a distributing vehicle and a discharging device are located at the top and bottom of a kiln body. The kiln body is provided with a preheating section, a calcining section and a roasting section from top to bottom, and square strip-shaped channels are arranged in the kiln. A combustion chamber is arranged in the furnace wall on both sides of the calcining section with a width of 40-80 cm, the combustion chamber is built by hollow integral combustion bricks, the combustion chamber is communicated with the calcining section by cross-distributed through holes, the through hole outlet is downwardly inclined, and an inclined convex block is arranged at the top. The lower part of the roasting section is provided with an upper collecting opening and a lower expanding opening structure, an air pressure pipe is arranged in the inclined brick of the upper collecting opening, the opening of the air pressure pipe is downwardly inclined and communicated with the roasting section, and the lower expanding opening is matched with the upper semicircular surface of the discharging device. The middle part of the upwardly inclined distributing main pipe of the distributing vehicle is communicated with the branch pipe which is inclined and changed in direction, and a change valve is arranged in the main branch pipe. The application provides a comprehensive solution of the shaft kiln with high calcining quality, energy saving, low investment and long service life for calcining magnesite, and can also be used for high-quality calcining of small-particle materials.

The present application relates to the technical field of metal powder manufacturing, in particular to a metal powder metallurgy sintering furnace and a sintering method thereof, which comprises the following steps: feeding a blank into a sintering furnace for pre-sintering to obtain a pre-sintered blank; heating the pre-sintered blank to a preset sintering temperature and then keeping warm, and after keeping warm for a first preset time, a sintered blank is obtained; when it is determined that the preparation of the sintered blank is at risk of being unqualified according to a sintering distortion representation value, it is determined whether the preparation of the sintered blank is qualified according to a distortion peak value of the risk sintered blank; when it is determined that the preparation of the sintered blank is unqualified according to the sintering distortion representation value, a treatment strategy for the unqualified preparation of the sintered blank is determined according to a densification deviation representation value of the sintered blank; the sintered blank meeting the preset standard is kept warm for a second preset time, and the to-be-remedied blank is kept warm for a remediation warm-keeping time; after the warm-keeping is completed, unified cooling is performed to obtain a sintered product, thereby improving the sintering efficiency of the sintering furnace.

Disclosed herein is a furnace for producing single crystal boules, the furnace comprising a furnace wall; a plurality of crucibles, where each crucible is operative to contain a melt that is contacted by a different pull rod; where each pull rod is attached to seed crystal; a first drive system that is located above the furnace and is configured to drive a first main shaft that is either in a geared or belted communication with a plurality of first planetary shafts; where each pull rod is in rotary communication at least one planetary shaft; where each pull rod is operative to contact the melt while undergoing rotary and translational motion with respect to a melt in one of the plurality of crucibles; where each crucible is surrounded by an induction coil and a refractory lining; and wherein each induction coil and refractory lining lie within the furnace wall.

The utility model discloses an anti-falling and anti-unfixing structure for a side face installation grid, and belongs to the technical field of pressing machines. The anti-falling and anti-unfixing structure for side face installation of the grid is applied to a frame and the grid, an anti-inclination plate is welded to the top end of the frame and comprises a plate part, a bent part is arranged at one end of the plate part, a supporting plate is welded to the bottom end of the frame, and the grid is installed between the bent part and the supporting plate in a clamped mode. The utility model discloses an anti-falling grid which comprises a frame, a grid is arranged on the frame, the edge of the outer wall of the grid is connected with a fixing bolt in a penetrating mode, the grid is connected with the frame through the fixing bolt, the frame comprises a vertical rod, a transverse rod is welded to the bottom end of the outer wall of the vertical rod, and an angle plate is welded to one end of the transverse rod. And property loss or casualties caused by falling of the grids when the machine runs due to the fact that the grids are not fixed can be prevented.

According to exemplary embodiments of the present invention, an ammonia burner is provided. The ammonia burner comprises: an air supply pipe configured to provide air to a front end side; a main fuel supply pipe disposed inside the air supply pipe and configured to provide first fuel to the front end side; and a first auxiliary supply pipe disposed outside the main fuel supply pipe with respect to the central axis of the air supply pipe inside the air supply pipe, the first auxiliary supply pipe being configured to provide second fuel containing ammonia to the front end side, and the first auxiliary supply pipe comprising an injection port inclined in a direction away from the central axis of the air supply pipe.

A microwave process and apparatus for processing ore, including a supply of reaction gases from Unipolar electrolysis, which provides an efficient and economical source of reaction gases The process and apparatus includes a reaction gas microwave pre-heat zone to pre-heat the reaction gases to a first temperature prior to input into a main reactor body where the temperature is raised to a higher second temperature to melt the ore and process it into desirable products, such as green steel in an energy efficient manner with reduced emissions.

This invention provides a method for detecting and evaluating data on batch coatings and / or glass melts in an all-electric cold-top melting tank for melting glass, as well as the use of this method in a glass manufacturing method. [Solution] Data or a topography map is detected at regular time intervals during tank operation, the temporal changes in the topography are evaluated, and a global topography is created. Data from sensor 160 can be detected during the batch feeding process. Furthermore, the batch coating topography that is optimal for each melting process can be determined and this topography can be used to control the local feed amount.

To provide a converter furnace which is preferably used when used refractory products are sorted and recovered.SOLUTION: In a converter furnace, refractory products each having different qualities between its portions are installed and a boundary defining part is provided in each boundary part between the portions. It is preferable that the refractory products be placed in multiple tiers in a height direction and the portions be divided in the height direction by the boundary defining parts. Further, it is preferable that the boundary defining part be formed by one or two or more combinations selected from (1) a buffer material which absorbs expansion of the refractory product, (2) a different color part having a color different from that of the adjacent portion, and (3) the refractory product having a form different from that of the adjacent portion. Alternatively, it is preferable that a part of the refractory product include, in part of its material, a refractory scrap sorted and recovered for each quality.SELECTED DRAWING: Figure 1

A method of manufacturing ceramic tape includes a step of directing a tape of partially-sintered ceramic into a furnace. The tape is partially-sintered such that grains of the ceramic are fused to one another yet the tape still includes at least 10% porosity by volume, where the porosity refers to volume of the tape unoccupied by the ceramic. The method further includes steps of conveying the tape through the furnace and further sintering the tape as the tape is conveyed through the furnace. The porosity of the tape decreases during the further sintering step.

The invention discloses a CSP soaking pit furnace wall thermal insulation material which is of a gradient composite structure comprising an instantaneous high temperature resistant inner layer, a thermal insulation middle layer and a radiation heat exchange outer layer, and the instantaneous high temperature resistant inner layer is made of a composite material comprising nano aerogel and high temperature resistant whiskers; the heat insulation middle layer is made of a nano-particle modified ceramic fiber material; and the radiation heat exchange outer layer adopts a ceramic coating with high infrared reflectivity. The overall heat conductivity coefficient is reduced through the synergistic effect of the low heat conductivity of the inner layer, the high-temperature shrinkage resistance of the middle layer and the radiation heat dissipation performance of the outer layer, good instantaneous high temperature resistance and high-temperature stability are considered, and the heat preservation effect is remarkably enhanced; and in combination with various surface connection improvement means, a heat conduction path can be effectively prolonged, a heat bridge effect can be blocked, heat loss is further reduced, heat energy loss and operation energy consumption of the furnace body are remarkably reduced, and rapid repair is facilitated.

According to the present invention, when molten iron having a carbon concentration less than the saturation concentration is held in a molten iron holding furnace, the occurrence of thermal spalling or structural spalling in a refractory material brought into contact with the molten iron is suppressed. A molten iron holding furnace according to the present disclosure holds molten iron having a carbon concentration less than the saturation concentration. At least a portion of a site of the molten iron holding furnace brought into contact with the molten iron is lined with a refractory material containing a refractory raw material and 2-10 mass% of free carbon.

The utility model relates to the technical field of reverberatory furnaces, and particularly discloses a reverberatory furnace combustion chamber capable of automatically adding coal, the reverberatory furnace combustion chamber comprises a stand column, a cross beam, a receiving hopper, a pneumatic flap gate, a discharging channel, a reverberatory furnace combustion chamber body and a platform, the stand column is arranged on one side of the reverberatory furnace combustion chamber body, and the cross beam is arranged above the reverberatory furnace combustion chamber body; one end of the cross beam is connected with the stand column, and the other end of the cross beam is connected with the platform; the platform is arranged on the other side of the reverberatory furnace combustion chamber, and a supporting column is arranged at the lower end of the platform; the receiving hopper is arranged above a combustion chamber of the reverberatory furnace, and the side wall of the receiving hopper is connected with the cross beam; the pneumatic flap gate is arranged at a discharge hole in the lower end of the receiving hopper; the discharging channel is connected with the cross beam, one end of the discharging channel is communicated with a discharging port in the lower end of the receiving hopper, and the other end of the discharging channel extends to the position above a feeding port in the upper end of the reverberatory furnace combustion chamber.

This invention discloses a feeding device and a feeding method for electrodes in an electronic glass furnace, belonging to the field of auxiliary equipment for electronic glass furnaces, comprising: a drive gear, an output gear, a drive motor, a connecting component, and a fixed motion component; wherein several output gears are each toothed with the drive gear, wherein both the output gears and the drive gear are rotatably mounted on the fixed motion component, wherein the front end of the transmission shaft of the output gears is connected to the connecting component, wherein the output gear is connected via the connecting component to the feed threaded rod of the electrode in the electronic glass furnace in use and is driven synchronously, wherein the rear end of the central shaft of the drive gear is connected to the drive motor.This invention solves the problem, according to the prior art, that the feed accuracy of the feed thread rod is low when inserting the electrode.

The utility model discloses an explosion-proof hole cover plate with a furnace pressure detection function, which relates to the technical field of electric furnace or submerged arc furnace smelting systems and comprises a cover plate, a heat insulation sealing layer, a cooling pipeline and a furnace pressure detection device. The cover plate is rotatably arranged on the furnace cover, the heat insulation sealing layer is arranged at the bottom of the cover plate, the side face of the heat insulation sealing layer is conical and used for being matched with the anti-explosion hole to form conical sealing, and the cooling pipeline is arranged at the top of the cover plate and is densely arranged in an S shape; the furnace pressure detection device is installed on the top of the cover plate and comprises a buffer cylinder, a pressure taking pipe and a pressure guiding pipe, the end, away from the buffer cylinder, of the pressure taking pipe penetrates through the cover plate and the heat insulation sealing layer, and the end, away from the buffer cylinder, of the pressure guiding pipe is connected with a pressure detection instrument. According to the explosion-proof hole cover plate with the furnace pressure detection function, the service life of the cover plate is prolonged through the heat insulation effect of the heat insulation sealing layer and cooling of the cover plate by the cooling pipelines which are densely arranged in the S shape, the furnace pressure detection device is integrated on the top of the cover plate, the pressure in a furnace can be detected in real time, and use is convenient.

The utility model discloses a kind of side-blown furnace body steel structure devices, belong to pyrometallurgical furnace kiln equipment field.Side-blown furnace body steel structure is fixed on the underframe by bolt group, the device adopts binding type structure, and multiple pairs of columns are symmetrically distributed, and beam is arranged between each pair of columns and the top of adjacent column.Column bracket and midsection beam in column middle bear furnace roof gravity, avoid water jacket deformation, and pull rod hanger supports furnace shell upper pull rod to prevent its bending.Column spacing is unevenly distributed according to furnace shell size, and furnace shell transverse top spring stress point is on column, simplify structure and effectively constrain furnace shell transverse deformation, end face pull rod plate and side pull rod plate are respectively stable corresponding water jacket.The device structure is simple, stress is stable, improves the side-blown furnace operating performance and convenience.

The utility model relates to the technical field of radiation furnace tubes, and discloses a radiation furnace tube hanging bracket which comprises a hanging bracket body, a guide rod is fixedly installed at the bottom of the hanging bracket body, and the guide rod penetrates through a guide pipe and is connected with the guide pipe in a sliding mode. When the threaded rod rotates, the movable plate can longitudinally move along the inner wall of the cylinder, when the movable plate moves, the interior of the movable plate synchronously moves through a sliding block connected with a first spring, when the sliding block abuts against the surface of a protruding block, the sliding block is squeezed, the first spring is squeezed, and the first spring is driven to rotate. And a plurality of groups of cylinders are arranged, so that the sliding blocks can be extruded for multiple times, the moving speed of the moving plate can be slowed down, the lifting frame body is more accurate during adjustment, and the situation that the lifting frame body shakes due to too high moving speed is avoided.

The utility model relates to the technical field of heating furnaces, in particular to a flame monitoring device in a heating furnace, which comprises two fixing plates, the left parts of the opposite ends of the two fixing plates are fixedly connected with a limiting rod together, and the right part of the rear end of the front fixing plate is fixedly connected with a motor. The output end of the motor is fixedly connected with a supporting screw rod, the outer surface of the supporting screw rod is sleeved with a connecting ring, the rear end of the supporting screw rod is movably connected with the fixing plate on the rear portion through a connecting bearing, the left portion of the outer surface of the connecting ring is fixedly connected with a supporting plate, and the left end of the supporting plate is fixedly connected with a connecting plate; the left end of the connecting plate is fixedly connected with a monitoring assembly, and the connecting plate is connected with the limiting rod in a sleeving mode. The monitoring assembly comprises a supporting plate, and a connecting pipe is connected to the left portion of the upper end of the supporting plate in a penetrating mode. According to the flame monitoring device in the heating furnace, the flame in the heating furnace can be monitored through the arranged monitoring assembly.

The invention provides a vacuum induction furnace for metal smelting, which is applied to the technical field of vacuum induction furnaces, and is characterized in that the vacuum induction furnace comprises a rack and a shell fixed on the rack, the shell is internally provided with a smelting cavity and a forming cavity, and the smelting cavity and the forming cavity are both connected with a vacuum pump; an induction furnace body is rotationally arranged in the smelting cavity; a casting mold is arranged in the forming cavity, and a lifting mechanism for driving the casting mold to move between the smelting cavity and the forming cavity when the smelting cavity and the forming cavity are both in a vacuum state is arranged in the shell; the forming cavity is connected with a sealing door capable of being opened and closed; a sealing mechanism for keeping the smelting cavity in a vacuum state all the time is arranged between the smelting cavity and the forming cavity; the shell is further provided with a feeding mechanism for feeding materials when the smelting cavity is in a vacuum state. The continuous casting device has the technical effects that continuous operation of smelting, casting, cooling and material taking is realized, and the production efficiency is remarkably improved.

To reduce the effort for inspecting an engagement part of a support beam, while suppressing positional deviation of a stand with respect to the support beam.SOLUTION: A method for inspecting a pallet for sintering a raw material R of sintered ore while conveying it, where a pallet 50 for sintering comprises: a grate 60 in which the raw material R is loaded; a plurality of support beams 54B, 54C, 54D that are arranged at intervals in a conveyance direction, and support the grate 60; and a plurality of front stands 80F and rear stands 80R in which engaging parts 56P of the adjacent support beams 54B, 54C, 54D are directly engaged in a vertical direction, and that have, at both end parts, a pair of engaged parts 82 holding the engaging part 56P, are bridged over the adjacent support beams 54B, 54C, 54D, and protrude above the grate 60. The method determines whether or not the engaging parts 56P of the plurality of support beams 54B, 54C, 54D need to be repaired, based on an amount of wear of the engaging part 56P of the support beam 54D, which is engaged with the rear side of the engaged part 82 in the conveyance direction among the pair of engaged parts 82 of the rear stand 80R.SELECTED DRAWING: Figure 7

The utility model discloses a sealing mechanism of a thermocouple for a vacuum heat treatment furnace, belongs to the technical field of thermocouple sealing, and is used for solving the problem of how to improve the convenience of disassembly and assembly of the thermocouple and the applicability to different thermocouples. The sealing mechanism comprises a sealing assembly and a sealing cap; the sealing assembly comprises a sealing sleeve, an upper extrusion part, an elastic part, a lower extrusion part and an extrusion ring; a mounting hole is formed in the sealing sleeve, and an annular supporting surface is arranged on the inner side of the mounting hole; the lower extrusion piece, the elastic piece, the upper extrusion piece and the extrusion ring are sequentially arranged in the mounting hole along the axial direction of the mounting hole, and the lower extrusion piece, the elastic piece and the upper extrusion piece are respectively provided with a sleeve hole for the thermocouple to pass through; the sealing cap is screwed on the sealing sleeve through threads, and is provided with a first communication hole through which the thermocouple passes; when the thermocouple passes through the sealing mechanism, the sealing cap is screwed tightly to extrude the extrusion ring, and the upper extrusion piece is forced to compress the elastic piece, so that the inner wall of the sleeve hole of the elastic piece elastically deforms and clamps the thermocouple.

The invention relates to a system (1) and a method (100) for measuring a temperature in a process chamber (2) of a high-temperature furnace (50) for processing workpieces, in particular for processing semiconductors, and a calibration method (200) for at least one temperature measuring device (8) of a high-temperature furnace (50). The process chamber (2) has an opening (3). According to the invention, a measuring apparatus (4) is provided in front of the opening (3) for contactless determination of the temperature (T) inside the process chamber (2) through the opening (3).

The utility model relates to the technical field of thermal insulation materials, in particular to an erosion-resistant corundum refractory brick which comprises a brick body, an inserting groove is formed in the inner side of the brick body, a filling brick is inserted in the inserting groove, a positioning screw is fixedly installed in the inserting groove, an inserting hole is formed in the middle of the filling brick, and the inserting hole is communicated with the inserting groove. And the positioning screw rod is inserted into the insertion hole, and the outer surface of the positioning screw rod is in threaded connection with a positioning cap. The utility model has the advantages that in the long-time use process, the structure which is firstly eroded or damaged by collision is the filling brick, so that when a certain filling brick is seriously eroded or seriously damaged, the positioning cap can be taken down through rotation, and then the filling brick is disassembled and replaced, thereby facilitating the maintenance of the lining in the later period, and improving the service life of the lining. The positioning screw rod is in threaded connection with the interior of the brick body, so that the positioning screw rod is detachable, and the positioning screw rod can be detached and replaced if the positioning screw rod is damaged in the long-time use process.