421results about How to "Small temperature fluctuations" patented technology

The invention relates to the field of temperature control, in particular to an automatic control method and system for a constant-temperature test room. The method comprises the following steps: acquiring real-time indoor operation monitoring parameters and external environment multi-dimensional data of a constant-temperature test room; performing indoor operation state analysis on the real-time indoor operation monitoring parameters, and constructing a laboratory dynamic state space model; carrying out multi-time-point environment temperature fluctuation calculation on the external environment multi-dimensional data, and carrying out nonlinear correlation learning to generate indoor state-environment nonlinear correlation characteristics; carrying out dynamic temperature evolution simulation on the laboratory dynamic state space model based on the indoor state-environment nonlinear correlation characteristics, and carrying out dynamic temperature evolution prediction to obtain temperature prediction values of a plurality of regions; constant-temperature deviation compensation calculation is carried out on the temperature prediction values of the multiple areas, then intelligent temperature control compensation is carried out, and an intelligent temperature control strategy is constructed; according to the invention, efficient and accurate constant-temperature automatic control is realized.

The invention belongs to the technical field of concrete temperature regulation and control, and particularly relates to a mass concrete intelligent temperature control system based on a neural network and PID control, and the system comprises a temperature obtaining module which is used for obtaining temperature data in mass concrete; the data processing module is used for processing the temperature data; the temperature prediction module is used for predicting the temperature change trend of the mass concrete; the PID control module is used for calculating the temperature deviation between the real-time temperature data and the target temperature data according to the real-time temperature data and generating a cooling control signal through a PID algorithm; the PID control module is further used for judging whether the current PID control parameter meets a preset requirement or not according to the temperature change trend predicted by the temperature prediction module, and automatically adjusting the PID control parameter when the judgment result is that the current PID control parameter does not meet the preset requirement; and the cooling execution module is used for adjusting the cooling system to work according to the cooling control signal. According to the invention, the temperature of the large-volume concrete can be effectively controlled in the pouring process.

The invention relates to the field of intelligent control, and provides an automatic control method and system of a fly ash melting processing system, which adopts an image analysis and data processing algorithm based on artificial intelligence to carry out state analysis of a molten liquid state image and time sequence association of melting temperature data in a melting furnace. Therefore, the heating power recommendation decoding value of the next time point is intelligently obtained according to the prompt enhancement joint representation between the molten liquid state characteristic and the melting temperature time sequence correlation characteristic. Thus, compared with a traditional fixed temperature set value, the system can analyze the state of the melting process in real time, dynamically and accurately adjust the heating power and ensure that the temperature is always kept within the optimal range, so that temperature fluctuation is reduced, the stability of the melting process is kept, and intelligent monitoring and control over the fly ash melting process are achieved.

The invention belongs to the technical field of composite fiber materials, and relates to a functional thermal management fabric, in particular to a phase change microcapsule doped flexible cooling fiber fabric and a preparation method thereof. The fabric has a controllable double-layer structure and is formed by assembling nanofibers and micro-nanofibers doped with a large number of phase change microcapsules. Wherein the micro-nano fiber layer has relatively high sunlight reflectivity and atmospheric window wave band emissivity, and shows an excellent radiation cooling effect; the microcapsule content of the nanofiber layer doped with a large amount of phase change microcapsules is not less than 10 wt%, and the nanofiber layer has no rupture phenomenon, has high heat storage capacity, not only makes up for the deficiency of radiation cooling capacity, but also effectively slows down temperature fluctuation. The radiation cooling technology and the phase change latent heat technology are combined, so that the long-time temperature control performance of the fabric is realized, and the thermal shock resistance is enhanced. In addition, the fabric also has excellent mechanical property, flexibility, washability, air permeability, moisture penetrability and sunscreen property.

The invention relates to the technical field of server heat dissipation, in particular to a server heat dissipation regulation and control method and device and a computer storage medium. The method comprises the following steps: acquiring a temperature value, access flow data to be processed and processing speed data; determining a state value of the server; carrying out forward dislocation on the temperature sequence, and carrying out temperature delay correction according to the correlation between a dislocation sequence obtained after dislocation and a state sequence to obtain a target sequence; determining abnormal change moments according to the target sequence and the state sequence, further determining temperature change time periods, and determining a change extension index of each abnormal change moment according to numerical distribution of temperature values in each temperature change time period; and determining the heat dissipation power at the current moment according to the change extension index at the abnormal change moment before the current moment and the state value and the temperature value at the current moment. According to the invention, the temperature regulation and control delay effect can be reduced, the operation strategy of heat dissipation is optimized, active heat dissipation regulation and control are realized, and the energy efficiency ratio is improved.

The invention belongs to the technical field of battery thermal management, and discloses a battery pack and a phase change material coupling liquid cooling composite thermal management system.The battery pack comprises a plurality of battery structures, each battery structure comprises a lithium battery, a fin structure, a phase change material filling area and a liquid cooling plate, and the fin structure is arranged on the periphery of the lithium battery; the liquid cooling plate is arranged on the periphery of the fin structure, a phase-change material filling area is formed between the liquid cooling plate and the fin structure, and the phase-change material filling area is filled with a phase-change material for absorbing redundant heat and generating phase change, so that the temperature fluctuation of the battery is reduced. The lithium bromide heat pump and the direct-current power supply are combined, and accurate adjustment of the temperature of the battery pack is achieved through efficient heat exchange and intelligent control. The system can be rapidly switched between a cooling mode and a heating mode, and it is ensured that the battery is always kept within the optimal temperature range in different working environments.

The invention relates to the technical field of fermentation, in particular to a dough fermentation temperature control device which comprises a fermentation box, a heating device, a cooling device, a rotating shaft, a dough bearing disc and a dough elasticity detection device. Judging whether the initial heating power of the heating device needs to be adjusted according to the fermentation temperature rise slope comparison result to obtain second heating power; according to the fermentation temperature comparison result, whether a cooling device is started or the current fermentation dough temperature is detected or the fermentation dough continues to be heated with second heating power is judged; judging whether the volume of the fermented dough needs to be detected or not according to the fermentation temperature comparison result; and adjusting the second heating power according to the volume growth curve comparison result to obtain second constant heating power. By measuring the temperature, the volume and the elasticity of the dough, the fermentation temperature in the fermentation process is adjusted, so that the dough fermentation accuracy is ensured.

The invention relates to the field of machine room temperature control, in particular to an efficient machine room approaching temperature control method, and the method comprises the steps: combining historical data prediction with real-time sensor data, and adaptively adjusting the state of a refrigeration system; the cabinet layout and the airflow path are dynamically optimized by using a thermal imaging technology; the air flow design is optimized through computational fluid dynamics, and an air door and a fan are intelligently controlled; heat recovery and renewable energy utilization are implemented, and the energy efficiency is improved; establishing a multi-stage redundant refrigeration system, and predicting and preventing faults; remote monitoring and automatic operation and maintenance are achieved by means of the Internet of Things and AI, accurate control over the temperature of the machine room is ensured, energy consumption is reduced, and operation and maintenance efficiency is improved.

The utility model provides a vertical reactor for green ammonia production, which comprises a shell, an internal part is arranged in the shell and divides the shell into a first cavity and a second cavity, an annular space is formed between the outer wall of the internal part and the inner wall of the shell, and a third cavity, a fourth cavity and an electric heater are arranged in the internal part. The device further comprises a lower heat exchanger, an upper catalyst frame assembly, a catalyst reaction cavity and a fifth cavity, a dead gas heat insulation cavity is further formed between the catalyst reaction cavity and the electric heater, and gas inlets are formed in the shell and comprise an annular gap gas inlet, a main gas inlet and a temperature adjusting gas inlet. The shell is cooled through basically constant external cold gas, large temperature fluctuation is prevented, operation under the fatigue working condition is avoided, the service life of the shell is prolonged, the heat dissipation performance of the shell is improved, the service life of the shell is prolonged, and the service life of the shell is prolonged. And the temperature of the catalyst reaction can be adjusted through external cold gas, so that the reaction efficiency of the catalytic reaction is improved.

The invention relates to the technical field of intelligent control, and discloses a temperature control method and system for a low-temperature experimental probe, the system comprises an argon bottle, a pressure stabilizing unit, a pre-cooling unit, the low-temperature probe and a control module, and the control module judges whether the pre-cooling unit is started or not; the processing unit collects a use environment to determine operation power; when the data larger than the similarity threshold value does not exist in the historical operation data set, condition factors are determined, and initial operation power is determined; the judgment unit collects the actual temperature and compares the actual temperature with the lowest required temperature to judge whether the initial operation power is adjusted or not; and the adjusting unit determines an adjusting coefficient according to the actual temperature to adjust the initial operation power, and stores the use demand, the use environment and the operation power to the storage unit. According to the invention, the problems of unstable temperature and low control precision are solved, efficient utilization of resources is realized, and the temperature control precision of the low-temperature experiment probe is improved.

The invention relates to the field of machine room temperature control, in particular to a machine room temperature automatic control system and method based on the Internet of Things, and the method comprises the steps: obtaining related data information of a machine room through a deployed sensor in the machine room, dividing the interior of the machine room into different regions, and building a multi-element space; marking each area according to the computer room temperature data information of different areas to obtain an integrated related influence degree weight set of the temperatures of different areas of the computer room; according to the integrated related influence degree weight feature set of the temperatures of the different areas of the machine room and in combination with related data information of the machine room, setting a priority level so as to formulate a machine room temperature regulation and control strategy optimization method; when second-time regulation and control are carried out, a machine room temperature correction coefficient is obtained according to the energy consumption condition of machine room temperature regulation equipment, the first-time regulation and control effect and the temperature change trend; and according to the adjusted temperature of the machine room, the system response time and the related data information in the machine room, establishing a machine room equipment working state monitoring model for regulation and control monitoring.

The invention relates to the technical field of coatings, in particular to a ceramic gel phase change energy storage coating and a preparation method thereof.The ceramic coating and a phase change material are combined to prepare the ceramic gel phase change energy storage coating, and the wear resistance and corrosion resistance of a coating layer can be improved by adding some modified filler; therefore, the durability of the paint coating is improved, and the paint coating has longer service life; secondly, the ceramic coating and the phase-change material are combined, the phase-change material can be used as a filler or a thickening agent, the overall mechanical strength and wear resistance of the coating can be improved, paraffin and expanded graphite can absorb or release a large amount of latent heat when the temperature changes, and due to the combination of the characteristic and the ceramic coating, the mechanical strength and wear resistance of the coating can be improved. The coating can store energy when needed and release the energy at proper time, so that the temperature of the coating and the surrounding environment of the coating is effectively adjusted, the coating has important significance in the fields of building energy conservation, electronic equipment heat management and the like, and the energy consumption can be remarkably reduced and the heat comfort degree can be improved.

The invention relates to the technical field of lead-based stacks, in particular to a nuclear storage integrated lead-based stack with a load autonomous following function. The nuclear storage integrated lead-based reactor with the automatic load following function comprises a reactor core, a phase change energy storage device and a heat energy utilization device, the reactor core is used for heating a coolant; the heat energy utilization device is used for absorbing heat in the coolant; the phase change energy storage device is arranged on the inlet side of the reactor core, the phase change energy storage device is used for carrying out heat interaction with a coolant, and the phase change temperature of the phase change energy storage device is consistent with the preset inlet temperature of the reactor core. According to the nuclear storage integrated lead-based reactor with the automatic load following function, natural circulation flow is not prone to oscillation and diffusion, the risk of overheating melting of the fuel assembly is not prone to occurring, thermal fatigue of the structural assembly is not prone to occurring, and high safety performance is achieved.

The invention belongs to the technical field of glass fiber composite materials, and particularly relates to a flame-retardant, heat-insulating and sound-absorbing composite material and a preparation method thereof. By adding zirconium oxychloride, gadolinium nitrate and other materials, the flame retardant property of the composite material is enhanced, the inflammability of the composite material under a high-temperature condition is effectively reduced, and the safety of the material under an extreme condition is improved; the introduction of the phase change material is beneficial to heat management of the material, and heat can be absorbed and stored in a high-temperature environment, so that a good heat insulation effect is provided; the materials such as the modified glass fibers and the basalt fibers are added, and the fibers have good acoustic performance and can effectively reduce noise transmission, so that the sound absorption effect is improved; therefore, the mechanical property of the material is improved, the good durability and stability of the material are ensured, and the long-term reliability of the material is ensured.

The invention relates to the technical field of furnace tube heating, in particular to a furnace tube Heater heating control system based on a PID (Proportion Integration Differentiation) control algorithm. The system comprises a temperature sensor used for collecting the temperature in the furnace tube in real time; the PID controller is used for receiving the temperature data of the temperature sensor, performing calculation according to the deviation between the set temperature and the actually measured temperature and outputting a control instruction; and the adjusting device is used for receiving a control instruction of the PID controller, adjusting the power of the heating element and realizing temperature control. According to the technical scheme, the fluctuation range of different temperature zones of the furnace body is + / -1 DEG C, and the temperature difference inside and outside the furnace body fluctuates by + / -0.1 DEG C; the precision and the stability of the heating control of the furnace tube Heater are obviously improved, and the temperature fluctuation is reduced.

The invention relates to the field of free radical solution polymerization programmed monomer supplementation, in particular to a polyacrylonitrile spinning solution with an adjustable molecular sequence and a preparation method thereof.The preparation method comprises the steps that polymerization solution formula components and dosage ranges are determined, and the components comprise acrylonitrile, itaconic acid, methyl methacrylate or fumaramide and the like; the thermodynamic reaction temperature ranges from 60 DEG C to 66 DEG C, the total monomer concentration ranges from 18 wt% to 26 wt%, and the initiator concentration ranges from 0.072 wt% to 0.103 wt%. When preparation is started, all components except for partial itaconic acid are added, then itaconic acid is supplemented in batches, and the supplementing time and the proportion range interval can be calculated according to a specific formula. The itaconic acid is supplemented in a manner of body nitrogen blowing or metered addition after dissolution, and the solution concentration is less than or equal to 55wt%. According to the method, the molecular sequence can be accurately regulated and controlled, the homogeneity of the copolymer is improved, heat release in the polymerization process is uniform, a stable environment is provided for industrial production, meanwhile, a reaction system is optimized, and the reaction efficiency and the product yield are improved.

The utility model relates to the technical field of chemical equipment, and particularly discloses a reaction kettle with a distributed feeding port, which comprises a reaction kettle, a discharge port is fixed at the bottom end of the reaction kettle, a feeding pipe is fixed at the top end of the reaction kettle in a penetrating manner, the top end of the feeding pipe is fixedly connected with a head tank, and the bottom end of the feeding pipe is fixedly connected with the distributed feeding port. The distributed feeding port comprises an upper straight pipe, a middle accelerating pipe and a bottom distributing head, the pipe diameter of the accelerating pipe is smaller than that of the straight pipe and that of the distributing head, a plurality of first open holes are formed in the outer wall of the distributing head at intervals, the bottom end of the distributed feeding port protrudes upwards to form a conical bottom, and a plurality of second open holes are formed in the outer wall of the conical bottom at intervals. According to the reaction kettle, the reaction speed of materials in the reaction kettle is more balanced, local overheating caused by high-concentration violent reaction is reduced, the selectivity of the reaction is improved, side reactions are reduced, and the temperature in the reaction kettle in the feeding process is more consistent, so that the temperature fluctuation in the feeding process is reduced.

The invention relates to the technical field of leather processing, in particular to a leather forming processing device for automotive trim. The device comprises a pretreatment device and a mold device, the rear side of the mold device is connected and provided with a trimming device, the front side of the mold device is connected and provided with a heating device, and the mold device is internally provided and connected with a cooling device. The pretreatment device is used for improving the quality and the processing efficiency of leather, improving the consistency of products and effectively shortening the production cycle, the mold device is used for forming the leather, ensuring the size accuracy and effectively improving the consistency of the products, and the heating device is used for softening the leather, facilitating subsequent processing, improving the process effect and effectively improving the quality of the products. The cooling device is used for rapidly cooling leather, stabilizing the size and effectively improving the product precision, the trimming device is used for finely adjusting the leather and improving the finished product quality, and the safety monitoring device is used for guaranteeing the safety of the machining process and effectively improving the operation safety.

The invention relates to the technical field of magnesium oxide calcination, and particularly discloses a suspension calcination system and method capable of adjusting the activity of light calcined magnesium oxide. Comprising a multi-stage preheater, a suspension calcining furnace connected with the multi-stage preheater, a high-temperature section cyclone cooler which is respectively connected with the multi-stage preheater and the suspension calcining furnace and is used for conveying flue gas subjected to heat exchange to the suspension calcining furnace, and a low-temperature section cyclone cooler connected with the high-temperature section cyclone cooler, a plurality of layers of combustors used for realizing gradient distribution and partitioned combustion of the temperature in the suspension calcining furnace are arranged in the suspension calcining furnace; according to the invention, the distribution valve, the multi-layer combustor and the high-temperature section cyclone cooler are connected with the suspension calcining furnace, the distribution valve is adjusted for distribution circulation, the multi-layer combustor realizes partitioned combustion, and residual air after heat exchange of the high-temperature section cyclone cooler is used for cooperation, so that the activity index of light-burned MgO is adjusted and controlled in stable and continuous production, and the production efficiency is improved. The product quality requirement is met.

The invention discloses an intelligent control environment-friendly basin body machining process, and belongs to the technical field of machining and welding processes. Comprising the steps that S1, positioning is conducted, specifically, a clamping mechanism clamps a base material, and the position of the base material is adjusted; s2, pretreatment is conducted, specifically, a pretreatment mechanism conducts oil stain cleaning and welding face grinding on the base material; s3, preheating is conducted, specifically, the sensor assembly detects the thickness and the material of the base material, and a temperature control mechanism is regulated and controlled to preheat the welding area to the proper temperature; s4, welding is conducted, specifically, the control terminal instructs a welding mechanism to conduct welding treatment according to set welding parameters including the welding temperature, the welding speed and the welding pressure; and S5, heat preservation is conducted, specifically, the control terminal instructs a temperature control mechanism to conduct heat preservation treatment on the welding area according to the thickness of the base material and the material parameters. The large temperature change in the welding process is avoided, and the structural strength of a weldment is improved.

The invention discloses a module high and low temperature test system based on a semiconductor, and the system comprises a hardware module which is used for controlling the temperature, transmitting data, and receiving an instruction; a control algorithm unit; the control algorithm module comprises a PID control module which optimizes temperature control by adjusting proportional, integral and differential parameters and improves the stability and response speed of the system by using a self-adaptive PID or fuzzy PID method. High temperature measurement precision can be realized by using a high-sensitivity sensor, errors can be reduced, control accuracy can be improved, novel technologies such as an MEMS actuator and the like are adopted, the temperature can be rapidly adjusted, the rapid change environment requirement can be met, meanwhile, through fuzzy logic and a reinforcement learning algorithm, the system can automatically adjust a control strategy according to real-time data, and the system is suitable for large-scale popularization and application. The method adapts to different working environments and conditions, combines edge calculation and deep learning technologies, can predict temperature changes, and takes measures in advance.

The invention discloses a frozen tissue block transfer box, and relates to the technical field of tissue sample embedding, the frozen tissue block transfer box comprises a box body, a lower containing cavity located in the box body, a storage disc embedded in the lower containing cavity, an upper containing cavity located in the box body, a dry ice storage area on one side of the storage disc, an ethanol storage area and an embedding treatment area on the other side of the storage disc, and a lower containing cavity located in the box body, the upper containing cavity is located above the lower containing cavity, a dry ice pushing channel with an opening in one end is arranged at the position, above the dry ice storage area, of one side of the upper containing cavity, the dry ice pushing channel communicates with the ethanol storage area through the opening, the dry ice pushing mechanism is movably installed in the dry ice pushing channel, and a channel cover plate is hinged to the top of the dry ice pushing channel. The multiple storage areas are arranged on the storage disc, cooling media can be managed in a partitioned mode, meanwhile, dry ice can be pushed to the ethyl alcohol storage areas through the dry ice pushing mechanism according to needs, the dry ice is mixed with ethyl alcohol to generate a more lasting low-temperature environment, and therefore temperature fluctuation is effectively reduced.

The invention relates to the field of welding maintenance equipment, and discloses multi-directional adjusting type automobile part welding maintenance equipment which comprises a base which serves as a basic component of the whole device and is used for assembling and bearing all treatment mechanisms and subordinate structural parts of the treatment mechanisms. The top seat is arranged on the upper portion of the base, and a treatment cavity is formed in the top seat and used for conducting a series of maintenance treatment on the automobile parts; and the four station identification seats are arranged at the middle front part of the top end of the base at equal intervals. By adding and arranging the part preheating mechanism, the damaged automobile parts are preheated before being subjected to welding maintenance treatment, on one hand, the temperature of a welding area can be more uniform, temperature fluctuation in the welding process is reduced, welding arcs can be stabilized, and the stability of the welding quality is improved; and on the other hand, metal in the welding area can be melted and flow more easily, the welding difficulty is lowered, and the welding maintenance efficiency of the automobile parts is improved.

The utility model discloses a box body and storage equipment, and belongs to the technical field of household appliances. The box body comprises: a housing; the inner container is installed in the shell, forms a chamber and is provided with first to fifth inner walls, the first to fourth inner walls are sequentially connected end to end and are all adjacent to the opening of the inner container, and the fifth inner wall is opposite to the opening of the inner container; the heat preservation layer is located between the shell and the inner container; the inner decoration plates are made of metal materials, and the first inner wall and the third inner wall are both provided with the inner decoration plates; the light source assembly comprises an area light source, is installed in the inner container and is located between the first inner wall and the third inner wall. The first inner wall and the third inner wall are each provided with a first protrusion for supporting the partition plate, a first installation space for installing the drawer is formed between the first protrusions and the fourth inner wall, and the interior trim panel is connected with the first protrusions. By means of the structure, interference of the interior trimming panel and the area light source in position layout is reduced, shadows and dark areas are reduced, and the interior of the storage equipment is brighter and clearer.

The invention relates to the technical field of Dewar tanks, in particular to a liquid nitrogen supplementing system and a Dewar tank. The liquid nitrogen supplementing system comprises a liquid nitrogen pipeline, and the two ends of the liquid nitrogen pipeline are connected with a liquid nitrogen tank and a Dewar tank liquid nitrogen bin respectively; the temperature sensor, the first exhaust pipeline and the liquid supplementing valve are sequentially arranged on the liquid nitrogen pipeline from the upstream to the downstream, and a bypass valve is arranged on the first exhaust pipeline; the differential pressure sensor is connected with a first connecting pipeline, and the first connecting pipeline is used for connecting the differential pressure sensor with the bottom of the Dewar tank liquid nitrogen bin; the exhaust valve is arranged on the second exhaust pipeline, and the second exhaust pipeline is used for being communicated with the top of the Dewar tank liquid nitrogen bin. According to the liquid nitrogen supplementing system, the liquid level height of liquid nitrogen in the liquid nitrogen bin can be accurately measured by controlling operation of all the valves, and therefore the adding amount of the liquid nitrogen is accurately controlled.

The utility model provides a crystallization filtering device for pesticide production, which belongs to the technical field of pesticide production equipment and comprises a crystallization tank body and a separation box body, and a filter screen plate is arranged in the separation box body; the crystallization tank body is provided with a heat exchange mechanism, and the heat exchange mechanism comprises a jacket and a heat exchange cylinder arranged in the crystallization tank body; the heat exchange cylinder and the crystallization tank body are coaxially arranged; the crystallization tank body is further provided with a stirring and scraping mechanism, the stirring and scraping mechanism comprises a motor, and the output end of the motor is connected with the rotating shaft; the rotating shaft penetrates through the heat exchange cylinder and is rotationally and hermetically connected with the heat exchange cylinder; a scraping assembly is arranged on the rotating shaft below the heat exchange cylinder and comprises two positioning rods, and the two positioning rods are connected with the rotating shaft through connecting rods; a scraping plate is arranged on each positioning rod and is respectively propped against the heat exchange cylinder and the crystallization tank body. The device integrates crystallization and filtration, so that the cooling efficiency and the crystallization efficiency of the device are improved, the cooling and stirring effects are considered, and crystals are not left and are easy to discharge.

The invention relates to the technical field of sintering furnaces, and provides a sintering oven furnace for sintering polytetrafluoroethylene and a sintering method of the sintering oven furnace. Air blowers are installed on the two sides of the furnace body, a connecting pipe is installed on the top of the furnace body, a sliding rail is movably installed in the furnace body, and a frame is fixed to the top end of the sliding rail. Through the arrangement of the main disc and the base fixed to the top of the main shaft, when the main shaft rotates, the main screw and the main disc on the main screw rotate at the same time, the main disc rotates at the top of the frame to drive the secondary disc to pass through teeth on the secondary screw and a lower chuck of the secondary disc to rotate, and the secondary disc rotates by 60 degrees every time the main disc rotates by one circle; the polytetrafluoroethylene product close to the center position is rotated to the outer side, so that the product above is in full and uniform contact with hot air, the effect of uniform heating of the sintering oven is achieved, the sintering quality and uniformity of the product are guaranteed, and the production efficiency is improved.

The invention discloses a quartz sand smelting furnace with a preheating function, and relates to the technical field of smelting furnaces, the quartz sand smelting furnace comprises a smelting furnace, a supporting seat is rotatably connected to the outer side wall of the smelting furnace through a motor, two furnace doors are symmetrically and rotatably connected to the top of the smelting furnace, and a preheating turning assembly is arranged at the top of the smelting furnace and comprises a hydraulic rod; the hydraulic rod is fixedly connected to the top of the supporting seat, a preheating furnace is fixedly connected to the telescopic end of the supporting seat, and two discharging doors are symmetrically and rotationally connected to the bottom end of the preheating furnace; the preheated quartz sand enters the smelting furnace, the temperature fluctuation in the smelting furnace can be reduced, the continuity and stability of the working process of the smelting furnace can be kept, meanwhile, the initial temperature of the preheated quartz sand is high, and the preheated quartz sand can reach the melting point and be molten more quickly after entering the smelting furnace; therefore, the melting time of each batch of quartz sand in the melting furnace can be shortened, and meanwhile, the energy consumption required for heating the quartz sand can be reduced, so that the production efficiency of the melting furnace is improved.

The utility model belongs to the technical field of lasers, and discloses a temperature control device and a laser. The temperature control device comprises a bearing seat, a heat conduction piece, a temperature sensor, a cover body and a semiconductor temperature control piece, a containing groove is formed in the bearing seat, the heat conduction piece is arranged in the containing groove, the temperature sensor is arranged on the heat conduction piece, the cover body covers an upper opening of the containing groove, and the semiconductor temperature control piece is arranged in the containing groove. A containing space used for containing a part to be cooled is formed between the cover body and the heat conduction part, the semiconductor temperature control part is arranged between the bearing seat and the heat conduction part and adjusts refrigerating or heating power according to temperature signals transmitted by the temperature sensor, and the bearing seat and the cover body can also play a role in heat preservation, so that heat loss of the containing groove is reduced, and heat dissipation efficiency is improved. Therefore, the accommodating space is always kept within the preset temperature range. The utility model also provides a laser, which enables an optical device to be in an accommodating space with small temperature fluctuation by applying the temperature control device, thereby ensuring the optical performance of the laser to be stable.

The utility model relates to an electric furnace flue gas treatment device which comprises a combustion chamber, the combustion chamber is directly communicated with a preheating mechanism, the combustion chamber is directly communicated with an electric furnace at the same time, a flow adjusting assembly is arranged at the communication position of the combustion chamber and the preheating mechanism, and a flow adjusting assembly is also arranged at the communication position of the combustion chamber and the electric furnace. A heat exchange assembly is further arranged in the combustion chamber. The cooling mechanism is communicated with the combustion chamber, at least two dry type quenching assemblies are arranged in the cooling mechanism, and each dry type quenching assembly is provided with a waste heat recovery structure; the dust removal mechanism is communicated with the dry type quenching assembly; and the steam-water system is connected with the combustion chamber and the cooling mechanism at the same time. The combustion chamber, the cooling mechanism, the dust removal mechanism and the steam-water system are matched with one another so as to stably purify smoke and absorb heat in the smoke.