118 results about "Forced circulation" patented technology

According to the organic wastewater energy-saving treatment system provided by the invention, organic matters in organic wastewater can be greatly reduced through oil separation treatment of the reservoir and filtration and coalescence separation treatment of the filtration coalescence device, so that the purpose of recovering the organic matters is achieved; through multi-effect evaporation of the I-effect falling film evaporator, the II-effect falling film evaporator and the forced circulation evaporator, generated steam is recycled through the MVR compressor, cyclic utilization of secondary steam energy is achieved, and energy consumption is reduced; and the wastewater can be recycled through a multi-effect evaporation and resin adsorption treatment mode, and the recovery rate reaches 96%. The steam consumption for wastewater treatment can be reduced by 0.90 t / m < 3 >.

The invention discloses a modular multi-fuel industrial burner plasma igniter with an efficient cooling structure. The modular multi-fuel industrial burner plasma igniter comprises an ignition module, an efficient cooling module, a fuel adaptation module and an intelligent control module. A plasma arc generator is arranged in the ignition module and is used for generating a high-temperature ignition source; the efficient cooling module adopts a multi-layer surrounding type flow channel design, and active heat management of the ignition module is achieved through forced circulation of a cooling medium; the fuel adaptation module supports rapid switching and stable supply of various fuels such as natural gas, fuel oil and biomass gas through standardized interfaces and pipelines; the intelligent control module integrates ignition control, fuel switching and thermal management strategies, monitors the system state in real time and automatically adjusts operation parameters. By means of the modular architecture and the efficient cooling technology, the problems that a traditional plasma igniter is prone to overheating damage, poor in adaptability and difficult to maintain under the high-temperature and multi-fuel working conditions are solved.

The application belongs to the technical field of heat exchanger of chemical equipment, and particularly discloses a forced circulation evaporator with built-in heat exchange, which comprises a heat exchange device, a heating device and an evaporator shell, wherein the heat exchange device is provided with a steam inlet and a condensate outlet; the heating device is arranged outside the heat exchange device and comprises a heater and a feeding cavity; the bottom side of the feeding cavity is provided with an opening and is in gap cooperation with the heater, so that the raw material flows down along the outer sidewall of the heater after passing through the feeding cavity; the evaporator shell is used for containing the heat exchange device and the heating device; an upper cavity is arranged on the heat exchange device and is in communication with the heat exchange device; and the forced circulation device comprises a circulating pump arranged at the bottom of the inner side of the evaporator shell and a circulating pipe, and the circulating pump is in communication with the inside of the heat exchange device through the circulating pipe and is connected to the upper cavity. The heat exchange device is reasonably arranged on the inner side of the evaporator, so that the occupied space is reduced, the heat preservation and insulation are better, and the utilization rate is effectively improved.

The utility model discloses condensing equipment for heat loss control forced circulation evaporation, which relates to the technical field of condensing equipment and comprises a condensing tank, a cooling mechanism is arranged on one side of the condensing tank and comprises a cooling water tank, a circulating pump is fixedly arranged on the outer side wall of the cooling water tank, and a first guide pipe is fixedly arranged at the side end of the circulating pump. A spiral cooling pipe is arranged on the inner side of the condensation tank, a second guide pipe is fixedly arranged at the top of the cooling water tank, a feeding mechanism is arranged on one side of the condensation tank and comprises a feeding barrel, a conveying pump is arranged on one side of the feeding barrel, a conveying shaft is rotationally arranged on the inner side of the feeding barrel, and an auger is fixedly arranged on the conveying shaft. Materials at the bottom of the condensation tank are pumped out through the discharging pipe through the conveying pump, the materials are conveyed to the top of the feeding barrel and then conveyed into the condensation tank through the feeding pipe, then the materials at the bottom in the condensation tank are conveyed to the top in the condensation tank, the materials covering the bottom in the condensation tank are effectively cooled through circulating feeding, and then the materials are cooled evenly.

This invention relates to the field of industrial heating equipment technology, specifically to a high-temperature oven system and its control method that integrates radiant heating and forced-air heating. A bottom heating tube is installed in the working chamber formed by the inner shell, and left and right heating tubes are installed in the air ducts on both sides, forming a heating component that integrates radiant and forced-air functions. A circulating air duct assembly, consisting of a circulating fan, a perforated air duct plate, and outlet / return air ducts, achieves forced circulation of hot air. During the heating phase, all heating tubes are activated for radiant heating to achieve rapid temperature rise. During the constant-temperature phase, the heating tube power is reduced, and the system relies on the circulating fan to drive airflow through the heating tubes in the air duct for circulating heating to maintain temperature uniformity. This effectively balances rapid heating and temperature uniformity, overcoming the inherent defects of a single heating method.

This utility model belongs to the technical field of MVR evaporators, specifically relating to an MVR evaporation crystallization device. It includes: a forced circulation system, a hydrocyclone, a thickener, and a centrifuge. In the forced circulation system, material sequentially enters a first heater, a circulation pump, a second heater, and a separator through circulation pipes, then returns to the first heater, forming a cycle. The circulation pipes are connected to a feed pump and a discharge pump. The hydrocyclone inlet is connected to the output end of the discharge pump. The hydrocyclone overflow outlet and underflow outlet are respectively connected to a mother liquor tank and a thickener. The thickener's clear liquid overflow outlet and crystal slurry outlet are respectively connected to the mother liquor tank and the centrifuge. The centrifuge's liquid outlet and solid outlet are connected to the mother liquor tank and the outside environment. This utility model achieves equipment compactness through skid-mounted integrated design and process optimization; by using the hydrocyclone for low-concentration material intake, the thickener does not require a large buffer space, further saving space.

The application relates to a falling film series forced circulation evaporation crystallization integrated device, belonging to the technical field of falling film evaporators, which comprises a supporting assembly, a falling film evaporator, a forced circulation assembly and a crystallization assembly; the falling film evaporator, the forced circulation assembly, the crystallization assembly and a connecting assembly are connected to the supporting assembly; the crystallization assembly is connected to the forced circulation assembly through the connecting assembly; the forced circulation assembly is connected to the falling film evaporator through the connecting assembly; the forced circulation assembly is used for circulating heating of the solution in the crystallization assembly, and the steam generated by the heated solution is transmitted into the falling film evaporator through the connecting assembly. The forced circulation assembly is used for circulating heating of the solution in the crystallization assembly, and the steam generated by the heated solution is transported to the falling film evaporator through the connecting pipe as an auxiliary heat source, so that the step-by-step utilization of heat energy is realized, and the steam consumption is reduced; the components are connected through the connecting pipe to form a closed circulation system, so that material leakage is avoided, and the system stability is improved.

This invention discloses an anodizing process and apparatus for the inner wall of a metal container, relating to the field of metal surface treatment technology. The apparatus includes a cathode and a circulation system; the cathode is inserted into the inner cavity of the metal container through an opening; the circulation system includes at least a circulation pump and an inlet pipe, the outlet of which is configured to be positioned at the bottom of the container's inner cavity; wherein the opening of the metal container is configured as an overflow outlet for the electrolyte. This invention, through forced circulation, allows the electrolyte to enter from the bottom and exit from the top of the container, forming a flow pattern of bottom inlet and top overflow. This effectively improves the flow field distribution within the container cavity, promptly removes reaction heat and discharges oxidizing gases, significantly improving the uniformity and density of the anodized film on the inner wall and reducing film defects.

This invention relates to the field of natural gas transmission technology, specifically to an inhibitor addition device for gas pipelines. The device includes a storage tank, a heat exchange shell, a gas pipeline, a feeding port installed on the outer wall of the storage tank, and a circulation assembly connecting the storage tank and the heat exchange shell. The storage tank has a first and a second partition fixedly installed at its upper and lower parts. Through the combined design of a stirring and temperature control assembly, an edge stirring assembly, and a tumbling assembly, the device achieves central stirring, edge stirring, and upper and lower tumbling functions. The rotation of the serpentine stirring tube ensures full-area stirring of the agent in the central region. The edge stirring rods, through a combination of revolution and rotation, precisely cover the dead corners around the tank wall. The auger of the tumbling assembly achieves forced circulation of the agent between the upper and lower layers through axial transport. This completely overcomes the component stratification and sedimentation problems caused by static storage in traditional storage tanks, ensuring that the inhibitor concentration remains consistent across all areas and significantly improving the stability and reliability of the corrosion inhibition and anti-clogging effects after injection into the pipeline.

The invention discloses a water pipe type two-return-stroke energy-saving and emission-reducing superheater assembly of a traditional boiler, and relates to the superheater assembly researched and developed according to the wide-capacity radiation heat exchange concept of a boiler hearth and the physical phenomenon outside the field (see the specification in details) capable of generating extremely few nitrogen oxides, and a traditional boiler body with the modified hearth. After the flange pipelines are connected and combined, the technical advantages brought by obvious technical characteristics are derived: the heat efficiency is improved by about 6-8%, the steel consumption is reduced by about 20%, and the cost is reduced by 30% due to the application of the boiler hearth tolerance radiation heat exchange concept; forced circulation medium water is in a water pipe of the two-return-stroke energy-saving emission-reducing superheater assembly, the heat exchange second flow speed is increased to about 1.5 m, the technical characteristic completely meets the requirement of physical phenomena outside the field capable of generating extremely few nitric oxides, and the purpose of ultralow nitrogen emission of the nitric oxides smaller than or equal to 15 / 25 milligrams is achieved; meanwhile, other technical problems of the product in the background technology are solved.

The application provides a small-sized pressurized water reactor, relates to the technical field of nuclear power, and aims at improving the technical problem that the reactor main loop is not simplified and the equipment is not miniaturized due to the existence of a coolant pump in the prior art small-sized pressurized water reactor with forced circulation. The application comprises a pressure vessel, a reactor core, a heat exchanger, a stabilizer and a coolant driving device, wherein the coolant driving device comprises a driving rotor assembly arranged in the inside of the pressure vessel and a driven rotor assembly arranged in the outside of the pressure vessel; the driving rotor assembly comprises a driving motor and a driving rotor connected with the driving motor; the driven rotor assembly comprises a driven rotor and an impeller connected with the driven rotor; and the driving rotor is magnetically connected with the driven rotor. The application adopts the magnetic connection between the driving rotor and the driven rotor, and no corresponding connecting part is arranged on the pressure vessel, so that the safety is ensured while the equipment volume is reduced.

This utility model discloses an energy-saving forced-efficiency evaporation device for alumina production, including an evaporator flash evaporator, a forced circulation separator, a primary forced-efficiency heater, a feed mother liquor inlet, a discharge mother liquor pipe, and a secondary forced-efficiency heater. After the forced-efficiency circulation evaporation device is arranged, a primary forced-efficiency heater and a secondary forced-efficiency heater are respectively set at the inlet and outlet of the forced circulation separator. The area of ​​the two forced-efficiency heaters is half of the original area. The total area of ​​the two heaters will not be reduced, but the area of ​​a single forced-efficiency heater is reduced by 50%. Therefore, the amount of mother liquor required for circulation can be reduced by about 50%, and under ideal conditions, the flow rate of the forced-efficiency circulation pump can be reduced by about 50%.

The invention discloses an electrolytic bath heat management and waste heat utilization system, which belongs to the technical field of hydrogen energy preparation, and comprises a sealing box body, the sealing box body is filled with heat conduction oil, and the sealing box body is filled with the heat conduction oil; the electrolytic bath is positioned in the sealed box body, and the electrolytic bath is immersed by the heat-conducting oil; the circulating part comprises a circulating pipeline, a temperature control unit and a heat exchanger, the heat conduction oil inlet and the heat conduction oil outlet of the sealing box body are connected through the circulating pipeline, and the temperature control unit and the heat exchanger are both installed on the circulating pipeline. According to the invention, the whole electrolytic cell is immersed in the sealed box body filled with the heat conduction oil, accurate temperature control of the electrolytic cell is realized through forced circulation of the heat conduction oil, and the absorbed waste heat is transferred to the external heat exchanger for effective recycling, so that the operation efficiency and the stability of the electrolytic cell are improved, and the overall energy consumption of the system is remarkably reduced.

The utility model relates to the technical field of heating reaction equipment, and provides a rotary reaction furnace which comprises a rack, a high-temperature furnace, a rotary cylinder, an inner cylinder and a driving assembly, the two ends of the rotating cylinder are connected with a detachable air inlet sealing cylinder and a detachable air outlet sealing cylinder respectively, and dynamic sealing is achieved through a sealing structure. The inner cylinder is coaxially arranged in the rotating cylinder to form an independent cavity, a cooling gas channel is arranged in the rotating cylinder, and rapid cooling is achieved through forced circulation. Oxygen is emptied between the rotating cylinder and the inner cylinder through a vacuum pump, protective gas is introduced to form a positive pressure barrier, and the explosion risk is eradicated. According to the utility model, through the modular design, the inner cylinder and the sealing cylinder can be quickly disassembled, and the maintenance cost is reduced; multiple safety protection devices effectively improve the safety of the equipment; the cooling channel design obviously shortens the cooling time and improves the equipment turnover rate; the device is suitable for preparing powder materials such as carbon nanotubes, and has the advantages of being compact in structure, convenient to operate, high in safety and the like.

The invention discloses a multi-chamber carbon fiber pre-oxidation furnace, an external hot air circulation system and a control method, and relates to the field of carbon fiber pre-oxidation. According to the pre-oxidation furnace, two inner sealing chambers and two outer sealing chambers are symmetrically distributed at the front end and the rear end of a main oxidation chamber, and the adjacent chambers are communicated through a separation device to form a sealed furnace body; the furnace external hot air circulating system comprises a main oxidation chamber hot air circulating system, an inner sealing chamber hot air circulating system and an outer sealing chamber wind power circulating system which are respectively communicated with corresponding chambers; according to the control method, the hot air circulation system outside the furnace is used for enabling each chamber to meet the requirements that Pb < Pa < Pc < = P0 and Tb is approximately equal to Ta > Tc. The main oxidizing chamber has a stable wind field and a stable temperature field, and it is guaranteed that the tow oxidizing reaction is uniform; harmful gas leakage in the reaction process is avoided by controlling the pressure difference of the five chambers; reaction heat is taken away through forced circulating air in the outer sealing chamber, and the problem that tows wind a roller is avoided; and the energy consumption is reduced by controlling hot air recycling of the inner sealing chamber and the multi-stage pre-oxidation furnace.

The invention relates to the technical field of radioactive waste liquid treatment, in particular to a method for recycling nitric acid in uranium purification raffinate by adopting a heat pump rectification technology. According to the method, the nitric acid in the uranium purification raffinate is recovered by adopting a vacuum distillation technology, and the steam at the top of the rectifying tower is pressurized and heated by a heat pump compressor to serve as a heat source of a tower bottom reboiler and a feed preheater, so that the energy of the steam at the top of the rectifying tower is recycled, and the energy consumption of production operation is reduced. Meanwhile, the blockage of the reboiler is reduced through the arrangement of a pretreatment system, a forced circulation system and the like; and through the arrangement of the steam washing tower, the heat pump compressor is prevented from being damaged by acid steam, so that the operation stability of the whole system is improved, and the overhaul frequency is reduced.

The utility model relates to the technical field of evaporative crystallization, in particular to efficient heat loss control forced circulation evaporative crystallization equipment. The device comprises a heating chamber, the top end of the heating chamber is provided with a steam treatment assembly, a through pipe is inserted into the bottom of the heating chamber in a penetrating mode, a valve is arranged on the through pipe, a conical evaporation crystallization chamber is installed at an end opening of the through pipe, and a discharging pipe is arranged on the outer side of the conical evaporation crystallization chamber in a penetrating mode; steam generated in the conical evaporation crystallization chamber is condensed in a treatment kettle and an upper cavity in the steam treatment assembly to generate condensed water, heat energy in the condensed water is recycled through heat exchange between a cylindrical heat exchanger and the condensed water, loss of the heat energy is further reduced, meanwhile, a feeding solution injected into a lower cavity is preheated, and the feeding solution is recycled. And extra heat energy required in the evaporative crystallization process is reduced, so that the energy consumption is effectively reduced, the energy utilization efficiency is improved, and the energy waste is reduced.

The utility model provides a water pump forced circulation cooling system which comprises a water pump shell, a centrifugal impeller is arranged in the water pump shell, a circulating water diversion flow channel is formed in a shell body of the water pump shell, and a water inlet of the circulating water diversion flow channel is arranged on the outer portion of the water outlet side of the centrifugal impeller in an abutting mode. The water inlet area of the water pump shell is provided with a circulating water return flow channel. Flame extinguishing exhaust in the system is communicated with a circulating water diversion flow channel through a water diversion pipe to complete cooling water inflow, and high-pressure water on the water outlet side of an impeller of the centrifugal water pump is introduced into a cooling cavity of the flame extinguishing exhaust. Cooling water in a cooling cavity of the flame-extinguishing exhaust is led to a circulating water return flow channel through a water return pipe, and the circulating water flow can take away most heat in the flame-extinguishing exhaust cavity, so that flame-extinguishing exhaust cooling is realized, and an operator is prevented from being scalded due to high temperature of exhaust during operation of a water pump of an internal combustion engine.

The utility model provides a converter vaporization energy-saving cooling system which is characterized in that a flue of a converter is respectively connected with a high-pressure circulation module and a low-pressure circulation module, the high-pressure circulation module is circularly communicated with the flue, the low-pressure circulation module is circularly communicated with a to-be-cooled part on the converter, and the to-be-cooled part on the converter is communicated with the high-pressure circulation module. Wherein the high-pressure circulating module adopts a high-pressure circulating pump, and the low-pressure circulating module adopts a low-pressure circulating pump; and the high-pressure circulating pump and the low-pressure circulating pump are in control connection through a frequency converter. According to the converter vaporization energy-saving cooling system, the high-pressure circulation module is arranged on the converter, in the starting process of each smelting period of the converter, the converter is firstly switched to the forced circulation unit to cool the flue, so that it is ensured that the temperature of flue furnace water rises rapidly and is heated uniformly, and after an ideal natural circulation state is formed, the converter is further switched to the natural circulation unit; wherein the low-pressure circulating pump is used for cooling parts to be cooled on the converter.

A heat pump (1) of the split type for large environments, including at least one internal unit (3) with a box-shaped casing (10) in which a heat exchanger (21) is received, at least one intake opening (16) for air to be treated and at least one delivery opening (22) for the treated air, defining an air treatment path passing through the exchanger (21) and at least one fan (23) in the treatment path for the forced circulation of air through the path. The casing (10) is subdivided into at least two chambers (18, 19) by a bulkhead (20) which intercepts the treatment path, the intake opening (16) is formed in a first chamber (18) and the heat exchanger (21) is mounted in the first chamber (18), the at least one fan (23) is mounted on the bulkhead (10) at the side of a second chamber (19). The delivery opening (22) for the air comprises at least one diffuser which communicates with the second chamber (19) and comprising at least one high-projection nozzle (24), at least one nozzle (24) is of the type with a motorized orientable axis.

The invention relates to the technical field of metallurgical industry, and discloses a process method and device for reducing coking of a bottom blowing smelting waste heat boiler, and the device comprises a bottom blowing furnace, an open-air horizontal-descending-straight-through type forced circulation waste heat boiler, a settling chamber, a sulfuric acid workshop, a high exhaust fan, a low-temperature flue gas pipeline, an electric stop valve, a water tank, an online monitoring instrument group and a metal hose; an uptake flue is arranged at the top of the bottom blowing furnace, a rear furnace door is arranged at the lower end of the uptake flue, and the rear furnace door is rotatably arranged through a door spindle; an inlet of the open-air horizontal-descending-straight-through type forced circulation waste heat boiler is connected with an outlet of the ascending flue, and a boiler outlet of the open-air horizontal-descending-straight-through type forced circulation waste heat boiler is sequentially connected with an inlet of the settling chamber and an inlet of the high exhaust fan, so that large-particle smoke dust and ash residues are collected in advance, and the coking probability of subsequent pipelines and equipment is further reduced; continuous and stable operation of the bottom blowing smelting and waste heat recovery system is guaranteed, parts are protected in multiple dimensions, and the service life of equipment is prolonged.

The utility model relates to the technical field of petrochemical engineering, in particular to a heat exchange system of a spiral-plate heat exchanger of a slurry bed device, which comprises a steam generation steam pocket, a circulating pump, a heat exchanger and a water supply pipeline, the water supply pipeline is communicated with the steam generation steam pocket, and an inlet of the circulating pump is communicated with the steam generation steam pocket through a pump water inlet pipeline. An outlet of the circulating pump communicates with the heat exchanger through a heat exchange water side inlet pipeline, the heat exchanger communicates with the steam generation steam pocket through a heat exchange water side outlet pipeline, and the heat exchanger is connected with a heat exchange oil inlet pipeline and a heat exchange oil return pipeline. The forced circulation of deoxygenated water at the water side inlet of the heat exchanger is realized through the circulating pump, the hot water circulation volume of the heat exchanger can be stably controlled, the water side flow rate and the circulation ratio are ensured, the heating surface of the heat exchanger is protected, the internal stress damage of the heat exchanger can be obviously reduced, the heat transfer effect is enhanced, and the risks of scaling and blocking are reduced; therefore, the operation efficiency and stability of the heat exchanger are improved, and the service life is prolonged.

The invention relates to the technical field of fused salt heat storage, and discloses a heat storage tank heat preservation device capable of preventing fused salt from being solidified and a using method, the device comprises a heat storage tank body shell, an electric heating plate, a heat preservation shell, a heat conduction pipe, a backflow device and a stirring device; the heat preservation shell is arranged in the heat storage tank shell and used for containing liquid molten salt. The electric heating plate is arranged at the bottom of the heat preservation shell. The heat conduction pipe is arranged around the heat preservation shell, and a heat medium inlet and a heat medium outlet are formed in the two ends of the heat conduction pipe correspondingly. The backflow device is communicated with the bottom of the heat preservation shell and is used for conveying the liquid molten salt located in the deep layer back to the shallow layer again; the stirring device is arranged in the heat preservation shell and used for rotationally stirring the liquid molten salt. Through a multiple active anti-condensation structure integrating bottom electric heating, spiral heat conduction pipe auxiliary heating, forced circulation and mechanical stirring, the problem that due to the fact that the local temperature of the fused salt heat storage tank is too low, fused salt is solidified is solved.

The invention discloses a horizontal type horizontal forced circulation waste heat boiler, which belongs to the technical field of waste heat boilers, and comprises an air inlet cover, a superheater, an evaporator, a coal economizer, an exhaust cover and a steam pocket communicated with both the superheater and the coal economizer, which are sequentially arranged along the flowing direction of flue gas. A first rectangular hollow pipe and a second rectangular hollow pipe which are filled with media are arranged in the air inlet cover and the air outlet cover respectively, a transmission structure composed of a cylinder body, a piston, a first spring, a connecting rod and a spline shaft is combined, a direct association mechanism of exhaust temperature difference and mechanical action is constructed, and the media in the rectangular hollow pipes expand with heat and contract with cold along with changes of the air inlet and exhaust temperature difference. And when the displacement of the spline shaft reaches a preset threshold value, the trigger mechanism automatically starts the driving mechanism, and the follow-up cleaning process can be linked without manual intervention.

The invention discloses a circulating evaporation nitric acid recovery system in adipic acid production, which is provided with a gas-liquid separation circulating tank, a heater, a falling film evaporator and a vacuum system connected with the upper part of the gas-liquid separation circulating tank through a pipeline, and a flash plate with flash holes is laid in the gas-liquid separation circulating tank; the heaters comprise the first heater and the second heater which are arranged in parallel, forced circulation is adopted for the heaters and the gas-liquid separation circulation tank, materials are pushed to flow under the action of the circulation pump, the tube pass turbulence degree is improved, scaling is reduced, and the problems that a traditional evaporator is high in energy consumption, prone to scaling and the like are solved. In addition, a falling-film evaporator is adopted, a falling-film distributor, namely an overflow weir, is arranged above a tube bundle, materials uniformly enter a heating tube through the falling-film distributor, and a uniform thin liquid film is formed, so that turbulent flow is remarkably enhanced, a thermal boundary layer is destroyed, and strong shearing and scouring effects are generated.

The utility model provides a kind of temperature-adjustable spray tray, including base and the spray tray body of being fixed in the bottom of base. Liquid exchange passage is equipped in base. The inside of spray tray body is equipped with temperature control passage for adjusting the temperature of spray tray. Temperature control passage includes adjacent cooling passage and heating passage. Heating passage is equipped with heat source. Liquid exchange passage is communicated with cooling passage, for guiding liquid source to flow into / out of cooling passage through liquid exchange passage, to adjust the temperature of spray tray. Compared with prior art, the utility model is equipped with adjacent cooling passage and heating passage in temperature control passage, realizes the rapid heating or rapid cooling of spray tray by double-channel cooperative temperature control mechanism. Heating passage is embedded with heat source, which can realize the rapid heating of spray tray. Cooling passage is directly connected with liquid exchange passage, and through the inflow / outflow forced circulation of liquid source, the rapid cooling of spray tray is realized.

The embodiment of the application provides a kind of MTR vacuum concentrator unit, comprising: power steam system;Solution circulation system and with the secondary steam system of solution circulation system connection;The solution circulation system includes isothermal evaporation tower, and the isothermal evaporation tower is connected with several groups of controllable water distributor components in parallel;The secondary steam system includes vapor-liquid separator, and the vapor-liquid separator upper end is connected with secondary steam balancer, and the vapor-liquid separator lower end is connected with circulating liquid circulation pipe and forced circulation pump;The circulating liquid circulation pipe and forced circulation pump are connected with the isothermal evaporation tower respectively.The application is based on MVR and TVR innovation, provides a kind of more energy-saving equipment and achieves the purpose of cooling, to meet the processing requirements of food and drug industry.

The utility model discloses a kind of sodium sulfate wastewater refining device, including pretreatment component, primary evaporation crystallization component, waste heat recovery component, secondary evaporation crystallization component, solid-liquid separation component, liquid storage tank and control component, the utility model is guided slurry to form cyclone by multiple evaporation crystallization component's vertical evaporation tower inner spiral guide vane, cooperate the closed loop circulation structure of forced circulation heater, strengthen heat exchange uniformity;Waste heat recovery component is compressed after evaporator top secondary steam and is transported by gas pipeline, realizes heat source utilization to reduce energy consumption;The three-stage filtration mechanism of solid-liquid separation component is classified by stepped screen group and intercepts crystal, fine separation is carried out to slurry in combination with horizontal centrifuge, ensure the efficient separation of sodium sulfate crystal and liquid;Each component is connected in series by modularization layout to reduce fluid conveying resistance, the real-time coordination pump valve and sensor operation of the PLC controller of control component, guarantee system continuous stable operation.

The utility model discloses an external forced circulation air-cooled vacuum pump, which relates to the field of vacuum pumps and comprises a vacuum pump, a driving motor, a heat dissipation structure, a base structure and a protective structure, the vacuum pump and the driving motor are fixedly connected to the top end of the base structure, and the heat dissipation structure is fixedly connected to the top end of the vacuum pump. The protection structure is fixedly connected to the rear side of the top end of the base structure and corresponds to the vacuum pump and the driving motor, the vacuum pump comprises a pump body, a first belt wheel and a crankshaft, the crankshaft is rotationally connected to the interior of the pump body, and one end of the crankshaft penetrates through the pump body to be fixedly connected with the first belt wheel; according to the external forced circulation air-cooled vacuum pump, effective heat dissipation treatment can be conducted on the vacuum pump through an external heat dissipation structure, meanwhile, a protection structure is arranged, potential safety hazards in the using process can be reduced, and meanwhile, original built-in air valves are all externally arranged, so that the pump body is convenient to inspect and maintain.

The invention relates to the field of electric rollers, and discloses an explosion-proof efficient air-cooling electric roller and mining explosion-proof equipment carrying the same, and the explosion-proof efficient air-cooling electric roller comprises an electric roller body, an air-cooling assembly, an outer heat exchange assembly and an inner air-cooling assembly. The air cooling assembly drives outer fan blades through a motor, cooling airflow is introduced into an air cooling channel penetrating through a center shaft, and an internal stator is directly cooled. The outer heat exchange assembly is composed of heat dissipation longitudinal pieces and transverse pieces which are arranged on the surface of the explosion-proof shell, and external heat dissipation is enhanced. An inner fan driven by a gear ring and an inner gear is arranged to stir internal air; meanwhile, a side air pipe is used for guiding part of airflow to push a pneumatic plate of the inner air cooling assembly, so that a piston rod reciprocates in a telescopic cylinder, and breathing type heat exchange is formed. Through the synergistic effect of axial air cooling, external enhanced heat dissipation, internal forced circulation and active pumping heat exchange, efficient multi-stage heat dissipation is achieved, the operating temperature is remarkably reduced, and the multi-stage heat dissipation device is particularly suitable for inflammable and explosive severe environments such as mines.