150 results about "Hearth" patented technology

The utility model discloses a kind of active lime double hearth kiln sealing valve distributing device, including feeding mechanism, two-way conveying mechanism for conveying limestone material to the double hearth kiln mouth direction is set in the export end of feeding mechanism, the distributing mechanism for guiding limestone material to kiln mouth is correspondingly set in the export end of two-way conveying mechanism, the distributing mechanism includes the distributor arranged in the butt joint of double hearth kiln mouth, and the sealing valve for receiving limestone material is arranged above distributor, the lower part of the sealing valve is butt joint with double hearth kiln mouth, the utility model simplifies the structure of distributing device, reduces equipment failure rate, improves equipment stability and service life, simultaneously sealing valve is closed structure after installation is completed, when distributing in kiln hearth, dust will not be caused by sealing valve valve plate opening and overflow and raise, simultaneously sealing valve valve plate is the structure of being closed upwards, when being subjected to kiln hearth airflow pressure, it can make valve plate further compact valve body sealing surface, ensure the sealing property of kiln hearth.

The present application belongs to the technical field of conveying mechanism auxiliary, and discloses a sagger deviation correction mechanism of roller furnace, which comprises a conveying mechanism and a group of saggars placed thereon. Through the cooperation of the correction assembly and other structures, when the sagger deviates, the second correction rod is folded and pushes the counterweight frame up through the connecting rod, and is higher than the other counterweight frame. The counterweight block slides to the first correction rod. Under the deviation state, the supporting force of the conveying roller on the sagger is uneven, the counterweight frame and the counterweight block increase the weight on one side of the sagger, the force applied to the folding of the first correction rod increases, the conveying roller drives the roller to rotate instead of directly contacting the correction rod, and four factors are added. The other side of the sagger is preferentially moved by the conveying roller rotation, and when the two correction rods are located on the same axis, the sagger can move normally. The position deviation during the sagger placement is solved, so that the sagger is stuck on the furnace wall or scratches appear between the sagger and the furnace wall, and the sintering condition is affected.

The utility model discloses a kind of double hearth combustion formula gasifiers, it is related to gasifier technical field, comprising: shell, heat exchange cavity is provided in the shell, heating assembly and several heat exchange pipes are provided in the heat exchange cavity, the heating assembly includes burner, hearth, flue, first spoiler and several smoke pipes;The utility model uses, high-temperature flue gas stays in hearth for long time, and cooperate several smoke pipes, further prolong the residence time of high-temperature flue gas in shell, make and heat exchange with the water in heat exchange cavity for long time, improve the utilization of heat, improve heat exchange efficiency;And heating assembly is provided with two, two heating assemblies can be selected to be enabled to heat, one of heating assembly can also be selected to be enabled to heat, two heating assemblies can be mutually standby, to adapt to the heat exchange demand of different low-temperature medium;And improve equipment reliability, save fuel.

The utility model discloses a kind of feeding structure of plasma melting furnace, and plasma melting furnace includes hearth, graphite cathode and molten pool liquid level of setting in hearth, the feeding structure includes feeding channel, feeding channel is obliquely arranged in the side wall of hearth, the inclination angle of feeding channel is set as 40 °±A, A is angle allowance, the plasma melting furnace of the utility model can greatly improve the distribution characteristics and movement process of ash slag particles by improving the height and angle of feeding port, improve ash slag melting reaction process and the solidification effect of molten slag on heavy metal, improve material melting rate so that it is fully utilized.

The application discloses a hot blast furnace for biomass particles and belongs to the technical field of hot blast furnaces. The hot blast furnace comprises a shell, a hearth is arranged in the shell, a feeding port and an air inlet are sequentially arranged on the side wall of the hearth from top to bottom, a partition plate is horizontally and fixedly installed on the inner side wall of the hearth, the partition plate is provided with a mounting hole penetrating through the partition plate, a servo motor drives a scraper to move, and the scraper scrapes the surface of a supporting plate during the movement of the scraper, so that the ash accumulated on the surface of the supporting plate can be pushed and spread, the probability that the ash naturally passes through the ash discharging port and falls is increased, the ash is prevented from being left on the surface of the supporting plate to cause coking, the ash discharging port is prevented from being blocked, the combustion-supporting gas under the supporting plate can pass through the ash discharging port and enter a combustion zone to burn, the thermal efficiency of the hot blast furnace is ensured, the biomass particles accumulated together can be dispersed during the movement of the scraper, and the area of the biomass particles exposed to the outside is increased.

The utility model provides a kind of blast furnace surrounding extension heating furnace energy -conserving element, belong to heating furnace energy -conserving reconstruction technical field, energy -conserving element includes main element, the cavity of the one end recess of main element is equipped with, rectangular slot is equipped with in the cavity and is in circular array, the other end of main element is equipped with mounting hole, the surface of main element is equipped with rough part covered with. The scheme provided in the application can increase the surface area in the hearth, thereby enhancing the heat exchange of the hearth, improving the heating speed of the hearth, reducing the fuel consumption of the heating furnace, and achieving energy saving and emission reduction.

A cooling method for super-large blast furnaces during maintenance shutdowns involves intermittently spraying water from cross-shaped temperature measuring holes and tuyere water guns inserted into the tuyere outlets after the furnace is shut down. The water spraying method is monitored and controlled in stages to effectively cool the remaining coke surface in the hearth. Throughout the process, the water volume is rationally controlled based on a series of collected parameters, including gas temperature, gas concentration, and coke surface temperature. The installed water guns and tuyere water guns have atomizing spraying functions, working in conjunction with pre-set top water guns to spray water onto the coke surface in the center of the hearth for cooling. This invention implements intermittent water spraying cooling by collecting multiple parameters. This invention not only achieves coke cooling, creating safe working conditions for furnace construction, but also avoids damage to the carbon bricks caused by excessive water contact with the cooling water. Furthermore, it creates favorable conditions for cleaning broken coke from the hearth before furnace restart.

The utility model discloses a kind of gasification firewood stove, the gasification firewood stove includes stove body with stove door, chimney, ash receiving box, fire ring and grate;Stove body is provided with hearth and ash hole inside;Chimney is arranged on the side wall of stove body and is communicated with hearth;Ash receiving box is inserted in ash hole and is located below grate;Fire ring includes inner fire ring and outer fire ring;Inner fire ring and outer fire ring are spaced apart and side edge sealing connection are set;Inner fire ring is set above grate, and a plurality of air holes are set on the upper portion side wall of inner fire ring;The interval space of inner fire ring and outer fire ring is communicated with ash hole;The utility model gasification firewood stove is set air hole on the upper surface of inner fire ring, high-temperature flue gas enters between inner fire ring and outer fire ring from air hole, and secondary combustion is carried out with oxygen inside, realize the full combustion of fuel and reduce the emission of black smoke, improve thermal efficiency and reduce flue gas emission, to achieve the effect of energy saving and emission reduction.

The utility model relates to a kind of gas four-head furnace, including furnace shell, panel being located on furnace shell and four furnace heads being located on panel, the lower end of furnace shell is provided with multiple supporting feet, and the left and right sides of panel are both provided with article placing assembly, article placing assembly includes article placing rack and limiting fixing part, article placing rack is hingedly connected on panel, limiting fixing part is used to limit and fix article placing rack, so that its article placing rack keeps upward unfolding article placing mode or keeps downward storage storage mode, and when article placing rack is in storage mode, the lowermost end of article placing rack is flush with the lowermost end of supporting foot;Article placing rack can be placed close to distance when unfolding, user does not need to take and place at long distance in multitask cooking process, reduce turning around and moving frequency, significantly shorten operation time, operation is more convenient, so that four-head furnace has article placing function in addition to basic heating function, improve product comprehensive practicability.

The application discloses a small fire oven heating method of a natural gas furnace, and comprises the following steps: checking pressure parameters; checking and calibrating air pressure and gas pressure of all burners in advance; setting valve opening degree on an HMI interface; setting fan control as a manual mode, and starting a large fan; starting ignition fan control and purge control; setting the air pipeline pressure relief valve opening degree as an automatic mode; setting fan control as a manual mode, starting the ignition controller manual ignition control, pressing a natural gas total air inlet valve button of a power distribution cabinet, setting an oven heating program according to an oven heating curve, heating the furnace with small burners ignited by straight flame burners and small burners ignited by flat flame burners below 300 DEG C, heating the furnace with small burners ignited by straight flame burners and large burners ignited by flat flame burners from 300 DEG C to 550 DEG C, and heating the furnace until the oven heating program is completed; and setting valve opening degree after the oven heating is completed. The application avoids direct flame impact on castable, and ensures that each lining of the furnace shows optimal physical and chemical properties after the oven heating is completed.

The utility model relates to the technical field of baking soda dry desulfurization technology discloses a baking soda dry desulfurization device, including reaction furnace, hearth, top cap and smoke stack, the top cap and hearth are installed in the upper and lower two sides of reaction furnace, one side of top cap and hearth is provided with smoke stack and the smoke hole respectively, the side wall of reaction furnace is inserted with desulfurization disc, the inner wall both sides of reaction furnace are provided with support, the bottom of top cap is provided with heating pipe. The baking soda dry desulfurization device, through the abutment sliding of desulfurization disc and support, can realize the separation and installation of desulfurization disc and reaction furnace, can take out desulfurization disc after the process of baking soda desulfurization is completed, realizes the maintenance and cleaning function of desulfurization disc, to facilitate the process of baking soda desulfurization next time, the last remaining impurities on desulfurization disc affect the efficiency and quality of desulfurization.

1. Name of the designed product: hearth. 2. Use of the designed product: the designed product is used for the hearth of cooking stove. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view 1.

The application discloses a kind of star soil conveying and heating extraction device, including sealed drive module, station conversion module and frame module, the frame module includes frame, hearth and hopper, the station conversion module includes station conversion drive assembly, U-shaped frame assembly, sample assembly, the sample assembly includes sample seat, with sample seat connection sample tray, end face sealing assembly, wherein, the sample tray is integrated with heating sheet and temperature sensor, the sample tray moves horizontally in frame, with right end sample site, left end sealing site and rotating site in the middle, the sample tray is inserted into hearth when in sealing site and end face sealing assembly is sealed with hearth cooperation, and in the sealing site, the heating sheet in the sample tray heats sample according to set control condition, and volatile component in the sample is transported to external detection equipment by pipeline.The structure is reasonable and compact, with sample discarding function, can work continuously without stop.

The utility model relates to a boiler air preheater technical field discloses a kind of high-efficiency heat recovery type boiler air preheater. To solve the technical problem of the heat exchange efficiency of conventional air preheater in prior art is lower, especially when handling high-temperature flue gas, heat recovery is not sufficient. The boiler of the utility model includes hearth for fuel combustion to generate high-temperature flue gas, the outlet of hearth is sequentially provided with superheater, economizer and at least one air preheater along flue gas flow direction;Steam inlet end of superheater is connected with steam drum outlet, superheater outlet end is connected with superheated steam output pipeline, steam drum lower part is connected with hearth water-cooled wall, inlet of steam drum is connected with economizer, economizer feedwater inlet is communicated with water source, air preheater is located in downstream flue gas passage of economizer, air inlet of air preheater is connected with air supply fan. The utility model significantly increases heat exchange area and fluid residence time by wide channel design and S-shaped flow path, improves heat exchange efficiency.

The utility model provides a kind of submerged entry nozzle electric heating baking device, including hearth shell, the wall of hearth shell includes nanometer microporous heat insulation plate layer, light clay brick layer and high-alumina refractory brick layer in turn from outside to inside, hearth shell is equipped with one or more heat-resistant partition, for the inner cavity of hearth shell is divided into multiple baking chambers, each baking chamber is used to install submerged entry nozzle, each baking chamber is evenly arranged with multiple silicon carbide heating rods around the periphery of submerged entry nozzle, the cold end of each silicon carbide heating rod is passed through hearth shell and is connected with power supply, hearth shell is equipped with insulating sealing sleeve pipe at the wall penetration position of each silicon carbide heating rod. It can meet the high-temperature preheating demand of submerged entry nozzle, and multiple submerged entry nozzles can be simultaneously and evenly electrically heated and radiantly baked, the temperature field distribution of submerged entry nozzle is uniform, local stress concentration problem is not prone to occur, and the heat insulation effect of hearth shell is good, heat loss is small, and energy utilization rate is high.

The utility model discloses a kind of zinc oxide waste heat boiler multi-channel membrane type water cooling structure, specifically related to boiler technical field, including foundation, steel frame, pot shell, hearth flue gas passage, second flue gas passage, tail flue gas passage, front wall membrane type wall and back wall membrane type wall;Hearth flue gas passage is internally provided with evaporator I, low-temperature superheater and high-temperature superheater;Tail flue gas passage is internally provided with evaporator II, high-temperature coal economizer, medium-temperature coal economizer and low-temperature coal economizer;Front wall membrane type wall upper portion is provided with flue gas import, and back wall membrane type wall lower portion is provided with flue gas export;Hearth flue gas passage bottom is provided with primary flue dust separating device, second flue gas passage bottom is provided with secondary flue dust separating device, and tail flue gas passage bottom is provided with tertiary flue dust separating device.The utility model not only has the function of efficient heat transfer, tertiary in-furnace flue dust separation, but also has the advantages of compact structure, low cost, small floor area, high efficiency, environmental protection and energy saving.

The utility model discloses a kind of biomass pellet combustion machines, including rack, setting on rack's bunker, setting on rack, for the spiral conveyor of output material in bunker, setting on the connecting cover of rack, setting on the air bellow of connecting cover, outlet end and the blast engine of air bellow intercommunication, setting on the hearth of air bellow end, setting on the igniter of hearth, and ash removal device;The hearth has the air distribution interlayer with air bellow intercommunication, and the hearth has air distribution hole;The spiral conveyor is connected with a discharge pipe, and the discharge pipe is obliquely arranged and lower end is inserted into hearth.This utility model's advantage is: effectively avoid the risk that material of spiral conveyor outlet end is accidentally ignited due to close high temperature area.

The present application relates to the technical field of resistance furnace, particularly relates to a box type resistance furnace structure; including furnace shell, controller, heat preservation layer and furnace door; the middle part of the front wall of heat preservation layer is provided with a through hole, the heat preservation block is detachably and sealingly installed in the through hole, and the hearth is detachably installed in the heat preservation layer; the present application is combined into detachable hearth by four L-shaped modules in turn, the pushing part and the power supply part are integrated on the heat preservation block, so that when the hearth is damaged locally due to blasting or other reasons, only the damaged L-shaped module needs to be replaced, and the furnace shell and the heat preservation layer do not need to be disassembled, at the same time, the heat preservation block is installed and the linkage in the pushing process of the L-shaped module is utilized, the compression fixing and circuit conduction of the heating element are automatically completed, and the problems that the existing integral hearth needs to be scrapped as a whole after blasting, many components need to be disassembled, and the maintenance time is long are solved.

The present application provides a kind of coal-fired boiler hearth coking state on-line monitoring method and system, it is related to variable measurement technical field, method includes: build coking tendency prediction model;Collect the operation data of coal-fired boiler, the medium data of entering coal-fired boiler, hearth temperature field distribution data and current coking thickness in hearth, obtain multi-source data;The multi-source data is preprocessed, and the characteristic data of the characteristic data of coking factor is extracted;Characteristic data is input into model, and coking tendency curve is obtained;When any coking thickness on coking tendency curve reaches preset early coking threshold value, generate coking start signal;When any coking thickness on coking tendency curve reaches preset critical coking threshold value, generate coking warning signal.Coking tendency prediction model is based on historical data and current data to predict future coking condition, predict coking tendency in advance, find potential problems when coking has not yet developed seriously, to solve the problem of monitoring lag.

A method for evaluating the activity of a blast furnace hearth is disclosed, relating to the field of automated monitoring technology for blast furnace ironmaking. The beneficial effects of this invention are as follows: This invention constructs a multi-parameter quantitative evaluation model by integrating eight dimensions, including physical thermal index, sidewall temperature change, tapping index, blast pressure stability, lower temperature stability, permeability index, FeO content, and lower valve box temperature. Combined with a dynamic weight allocation mechanism and a visual monitoring platform, it achieves real-time online monitoring and accurate evaluation of blast furnace hearth activity. The scoring update frequency can reach 30 times / hour, the prediction accuracy is improved to over 90%, the early warning time is advanced to 6 hours before anomalies occur, the accuracy of control measures is improved by 35%, and the number of production reductions due to furnace condition fluctuations is reduced by 42%. It effectively overcomes the shortcomings of traditional methods, such as strong lag, single indicators, and reliance on manual experience. It has good universality and long-term optimization capabilities, providing reliable technical support for stable and smooth blast furnace operation and low-consumption, high-efficiency production.

The utility model provides incineration rotary kiln feeder prevents blocking device, including solid feed bin, its characterized in be set in the bottom of solid feed bin and be set in the middle part of the discharge gate, the movable joint of discharge gate, the one end of lower gate is connected hydraulic cylinder A, the lower part of discharge gate is connected piston feed slide, one side of piston feed slide is set and advances mechanism, the other side of piston feed slide is set hearth gate, one end of hearth gate is connected hydraulic cylinder B, through setting as L type with piston feed slide, the inside of piston feed channel one side is set and advances the trolley, and drives through the propeller, and the propeller can select hydraulic cylinder, and the trolley can realize to the effect of propelling the material falling to the hearth, accelerates the material to enter the hearth incineration, improves work efficiency.

The utility model discloses a garbage incinerator hearth heat -proof heat preservation optimization structure belongs to garbage incineration equipment technical field, aims at solving traditional incinerator heat loss big, furnace wall temperature is high, the low temperature of secondary air leads to the problem such as high operating cost, low combustion efficiency, including inner furnace wall, outer furnace shell, both constitute double -deck structure, and the inner furnace wall front arch, rear arch is water cooled wall, and the vertical section is equipped with secondary air through -hole, and below is the furnace grate, the outer furnace shell and the inner furnace wall form cavity heat -proof, and its arch shell is equipped with the air extraction bin and through -hole, and the air extraction bin communicates cavity, and the through -hole corresponds with secondary air through -hole, and the fan passes through the air extraction pipe, air supply pipe and will cavity hot air as secondary air send into hearth. Meanwhile, water cooled wall and arch shell are matched through hanging block, positioning column, hanging groove, positioning groove, and are fixed with bolt, ensure that the connection is firm, and the structure realizes efficient heat -proof heat preservation and waste heat recovery, and optimizes secondary air supply, improves combustion efficiency, reduces pollutant emission and operating cost.

This invention discloses a method for cooling the preheating zone of a double-chamber kiln under non-venting conditions. After kiln shutdown, the gas compressor is stopped, the flue gas dust removal fan remains running, and all other fans are shut down. Material is discharged from the kiln to be repaired, exposing the area to be repaired, and then discharged downwards for 0.5–1 m. Limestone is added to the kiln to be repaired to form a 0.5–1 m layer of cold material, ensuring the area to be repaired is above the surface of the cold material layer. The kiln to be repaired is connected to the outside environment, via an intermediate channel and through the non-repaired kiln to the dust collector. The flue gas dust removal fan is adjusted to 250–350 rpm / min, drawing external air into the kiln to be repaired, cooling the preheating zone for 20–30 minutes. The temperature of the top of the kiln shell and the surface of the cold material layer are measured, along with the CO concentration. Once the conditions are met, repairs can proceed. This invention improves the kiln maintenance environment under non-venting conditions.

The utility model discloses a kind of sintering devices for magnetic material processing belongs to sintering device technical field, to solve the technical problem of energy waste under prior art of magnetic material sintering device. The sintering device for magnetic material processing includes sintering furnace, sintering furnace is provided with furnace door, the hearth is arranged in the sintering furnace, sintering frame is arranged in the hearth, for holding the magnetic material to be sintered;The both ends of the sintering furnace are provided with combustion engine and flue gas pipe respectively, the combustion engine is used to deliver heat source into hearth for magnetic material sintering, the hearth has flue gas passage with sintering furnace inner wall, the flue gas pipe is communicated with flue gas passage. The sintering device for magnetic material processing plays the role of heat insulation by flue gas in flue gas passage to hearth, reduces energy loss, simultaneously, recycling of heat energy is realized by water circulation in interlayer, further improve energy utilization efficiency, reduce production cost.

The utility model relates to a kind of combustion appliances, especially a kind of fuel combustion hearth structure, solve the design problem of fixed fuel bore body.It includes shell and the bore body of being arranged in the shell fixed, the bore body is equipped with the inlet for fuel to be put into in lower side wall, the bore body is equipped with the gasification hole of uniform arrangement in upper side wall, the bore body top is also fixedly connected with cover plate, the cover plate top has annular taper face, the taper face is also equipped with guide plate, the guide plate is arc structure, the guide plate is evenly spaced along the circumference of taper face, the bore body top is also equipped with the opening of axial through, guide slot of the flow direction opening is formed between the guide plate.It is simple and ingenious, air is introduced into bore body or mixed micro fuel in two times successively, accelerates combustion and releases heat energy, also help to concentrate fireworks to reduce heat dissipation, meet design use requirement, can be applied in a variety of solid fuel occasions according to need.

The utility model discloses a kind of combustion device and combustion system, comprising: hearth, hearth provides space for material combustion;Primary air chamber, primary air chamber is used to form primary air;Air distribution plate, hearth is communicated with primary air chamber by air distribution plate;Ammonia gas pipeline, ammonia gas pipeline is located in hearth and close to air distribution plate;Ammonia gas air cap, ammonia gas air cap is used to communicate ammonia gas pipeline and hearth, and the gas in the hearth is guided, the surface of ammonia gas air cap has ammonia cracking catalyst layer, ammonia cracking catalyst layer can at least part of ammonia gas that passes through ammonia gas air cap is cracked into nitrogen and hydrogen. Since the minimum ignition energy of hydrogen is lower than that of ammonia and the combustion temperature is high, hydrogen is more easily combusted than ammonia, which can improve the combustion characteristics in the hearth and enhance the effect of ammonia combustion, thereby reducing ammonia escape, while allowing more ammonia to react with nitrogen oxides, achieving the purpose of inhibiting the formation of nitrogen oxides.

The utility model relates to a kind of split type swing ditch, the kind of split type swing ditch includes blast furnace, the one side of blast furnace is fixedly provided with hearth, hearth is provided with first installation groove and second installation groove, one end of the first installation groove is close to the blast furnace setting, the other end of the first installation groove is communicated with installation groove, molten iron ditch is provided in the first installation groove, the end of the molten iron ditch is inserted into the second installation groove, the bottom of the second installation groove is provided with turnover beam, swing ditch bracket is detachably installed on the turnover beam, swing ditch shell is detachably installed on swing ditch bracket, the side of second installation groove away from molten iron ditch is fixedly installed with swing mechanism, swing driving mechanism, further include swing pull rod, one end of swing pull rod and swing mechanism fixed connection, the other end of swing pull rod and swing ditch bracket rotation connection, with simple structure, reduce swing ditch replacement process, shorten swing ditch replacement time, prevent work injury event occurrence and so on.