36results about How to "Reduce cooling effect" patented technology

The utility model discloses annealing equipment for stainless steel plate production, which comprises a box body, a door plate arranged on one side of the box body, a cooling assembly arranged in the box body, a mounting box arranged on the box body, an extraction assembly arranged on one side of the mounting box, a conversion assembly arranged in the mounting box, a fixing plate arranged on one side of the fixing plate, and an inclined pipe arranged on one side of the fixing plate. A sponge block is arranged on the other side of the fixing plate and connected with one end of a mounting frame, a sponge block is also arranged at the other end of the mounting frame, an extrusion plate is arranged at the end of the sponge block, a condensation pipe is mounted in the mounting frame, a drainage pipe is arranged on one side of the mounting box, and a driving mechanism is arranged in the mounting box. According to the annealing equipment for stainless steel plate production, water vapor is conveniently recycled through the conversion assembly, so that water resources are saved, a sponge block can be regularly extruded through an extrusion plate driven by a motor, absorbed water is discharged, and the water vapor treatment efficiency is further improved.

The invention discloses a green low-carbon production method of an HG785 steel plate by replacing hardening and tempering with direct quenching and tempering, the thickness of the steel plate is 30-50mm, and the production method comprises the following steps: smelting and continuously casting various components according to a reasonable proportion; heating and rolling; directly quenching; two-phase region coupling tempering; and after discharging, performing air cooling or water mist cooling to room temperature to obtain a finished steel plate. The production method provided by the invention is high in universality, low in modification requirement on an existing medium-thickness plate production line (with accelerated cooling and tempering capabilities), easy to realize industrial large-scale production and remarkable in economic benefit and social benefit; through the collaborative design of'component fine adjustment and gradient quenching + two-phase region coupling tempering ', the mechanical property of the steel plate comprehensively reaches the standard (the yield strength is larger than or equal to 785 MPa, and the impact energy stability at the temperature of-40 DEG C is larger than or equal to 80 J) while greenness and low carbon are achieved, it is proved that'green production and product performance improvement can be synchronously achieved', and the practicability and popularization value of the green low-carbon technology are further enhanced.

This invention relates to a method for improving transverse temperature uniformity and suppressing residual stress in hot-rolled strip steel, belonging to the field of hot-rolled strip shape control technology in the metallurgical industry. The technical solution is as follows: During the post-rolling cooling stage of hot-rolled strip steel, the cooling in the strip width direction is divided into three zones: the middle of the strip steel is the normal cooling zone, the edge of the strip steel is the zone sensitive to strip temperature and residual stress, and the outer side of the strip steel is the unsprayed zone. The ultra-fast cooling manifold cooling nozzles in the normal cooling zone in the middle of the strip steel and the outer side of the strip steel are perpendicular to the strip surface. The ultra-fast cooling manifold cooling nozzles in the edge zone sensitive to strip temperature and residual stress are deflected towards the center of the strip steel at a certain angle α. The formula for calculating the number of nozzles is: [Formula omitted]. The beneficial effects of this invention are: it improves the transverse temperature uniformity of the strip steel, which is lower at the edges and higher in the middle, reduces the timing difference in the strip entering the phase transformation process, enhances the uniformity of the microstructure, and thus reduces the residual stress in the hot-rolled strip steel.

The invention relates to the technical field of model prediction control, in particular to a cooling capacity balanced cooling control method and system for toothbrush injection molding, and the method comprises the steps: calculating a first cooling rate compensation coefficient of the upper and lower surfaces of a mold according to the area difference between the contact area of an upper mold and the contact area of a lower mold of a toothbrush; heat conduction parameters of the upper die and the lower die are collected; calculating a second cooling rate compensation coefficient of the upper and lower surfaces of the mold based on the obtained heat conduction parameters; and inputting the temperature of the cooling liquid, the flow velocity of the upper mold cooling fluid, the first cooling rate compensation coefficient and the second cooling rate compensation coefficient into a pre-constructed lower mold cooling flow velocity prediction model, and outputting the flow velocity of the lower mold cooling fluid. The prediction model is introduced to calculate the optimal flow velocity of the lower die under the condition that the reference flow velocity of the upper die and the temperature of the cooling liquid are given, in this way, the cooling rates of the upper surface and the lower surface tend to be consistent, and section temperature difference and shrinkage difference caused by non-synchronous solidification are avoided.

The application relates to a cooling control method, system and storage medium of an electric vehicle controller, which comprises the following steps: collecting a working state signal and internal temperature information of the controller; performing flow control mode or over-temperature power reduction protection mode according to the collected information; emptying and cleaning a cooling water loop of a controller cooling system; collecting a cooling water inlet temperature and a real-time temperature of the controller, and obtaining corresponding requested cooling flow according to a calibrated cooling water inlet temperature flow MAP table and an internal device temperature-flow MAP table; and determining whether to start AC to actively control the cooling water inlet temperature; the application can adjust the cooling water inlet flow based on real-time information such as vehicle control information, controller water inlet temperature and controller internal power electronic device temperature, so that the controller is effectively cooled and the power consumption of the cooling system is reduced.

The utility model relates to the technical field of phase modifiers, in particular to an air cooling type phase modifier lubricating oil device which comprises a bottom plate, a box body, a cover plate and a connecting mechanism, the box body is arranged at the top of the bottom plate, the cover plate is connected with the box body through the connecting mechanism, one side of the box body is provided with an oil outlet pipe and an oil return pipe, and the oil outlet pipe is connected with the oil return pipe. A liquid inlet assembly is arranged at the top of the cover plate, the connecting mechanism comprises a positioning block, a fixed block, a first bearing, a rotating block, a second bearing, a rotating frame, a sliding groove, a sliding block and an electromagnet, one end of the positioning block is connected with the cover plate, the other end of the positioning block extends into the top of the box body, a positioning groove matched with the positioning block is formed in the box body, and the electromagnet is arranged in the positioning groove. One end of the fixed block is connected with the box body, one end of the rotating block is connected with the fixed block through the first bearing, and the air cooling type phase modifier lubricating oil device solves the problem that existing equipment is inconvenient to clean.

This utility model discloses a heating and temperature compensation device for variable diameter suspension spring materials, including a main housing, a temperature compensation component, and a collection component. The temperature compensation component is fixedly installed on the outside of the main housing, and the collection component is movably installed on the lower part of the main housing. The temperature compensation component is installed and used through the main housing, and the collection component is used to collect impurities or rust that have fallen off the spring. The temperature compensation component includes an induction heater, a heating coil, a cooling water tank, a heater, a cooling water pipe, and a temperature sensor. The induction heater is fixedly installed on the top of the main housing. This utility model accurately compensates for the temperature of the thinner wire end by adjusting the heating time of the induction heater and ensures that the heating coil provides sufficient temperature compensation. The device uses an intelligent temperature control system to precisely control the heating of the variable diameter area, ensuring that the temperature of each part is uniform and meets the process requirements.

The application discloses a coal diesel oil hydrocracking system heat integration process and relates to the technical field of petroleum chemical industry.The system comprises a hydrocracking reactor, a H2S stripping tower and a main fractionating tower which are sequentially connected.The middle reflux of the main fractionating tower is used for heating cold low fraction oil to obtain secondary cold low fraction oil.The diesel oil at the bottom outlet of the main fractionating tower is used for heating the secondary cold low fraction oil to obtain tertiary cold low fraction oil.The reaction product of the hydrocracking after one-time heat exchange is used for heating the tertiary cold low fraction oil to obtain quaternary cold low fraction oil.The quaternary cold low fraction oil is used as the reboiling heat source of the H2S stripping tower.The application changes the cold low fraction oil heat exchange process, fully realizes the waste heat utilization of the middle reflux of the main fractionating tower, the hydrocracking product, the diesel oil at the bottom outlet of the main fractionating tower and the cold low fraction oil, reduces the cooling load and the heat load, simultaneously closes and stops the reboiling heating furnace of the original H2S stripping tower and reduces the energy consumption.

The application discloses a kind of based on deep learning's plate shape control spray flow optimization method, it is characterized in that include following steps: S1 data acquisition: obtain plate specification parameter, process parameter, spray system state parameter and plate shape measurement data, and with time stamp and volume number / rolling section identification;S2 data pre-processing: to the acquisition data is washed, abnormal processing, normalization or standardization, feature engineering, and with sliding time window Construction time series sample;S3 prediction model: the sample after pre-processing is input into long short-term memory network containing self-attention mechanism, and the flow setting value of spray system is output;By this method, the dynamic optimization and real-time adjustment of spray flow can be realized, the plate shape control precision and production adaptability are improved, and the trial-and-error cost and artificial experience dependence are reduced.

This invention discloses an adjustable automotive expansion valve and method, belonging to the field of expansion valve technology. It includes a valve body, a rotary progressive valve opening assembly connected to the middle of the valve body, a self-locking valve body switch drive assembly connected to the upper end of the valve body, and a self-limiting manual adjustment assembly connected to the lower end of the valve body. The self-locking valve body switch drive assembly senses the temperature at the upper end of the valve body and drives the rotary progressive valve opening assembly to move. The rotary progressive valve opening assembly gradually controls the flow rate of the condensate at the lower end of the valve body, thereby achieving temperature regulation at the upper end of the valve body. When either the self-locking valve body switch drive assembly or the rotary progressive valve opening assembly malfunctions, the self-limiting manual adjustment assembly manually adjusts the condensate flow rate. The self-locking valve body switch drive assembly facilitates disassembly, replacement, and repair.

The utility model discloses a positioning frock for mould processing, including the shell, the inside fixedly connected with support plate of shell, the top fixedly connected with electromagnet of support plate, the top swing joint of electromagnet has the magnetic conductive plate, the top extension of magnetic conductive plate to the outside of shell, cooling mechanism, cooling mechanism includes the fan fixedly connected at the front of shell and located support plate bottom, the back of fan extends to the outside of shell. The utility model discloses through setting up electromagnet and magnetic conductive plate, carries out magnetic force adsorption to mould billet, because electromagnet suction force is not less than 14 kg per square centimeter, thereby avoids the worker when polishing mould billet, mould billet displacement occurs, because is the utilization magnetic force to the fixed mould billet, thereby avoids positioning frock and mould billet clamping bad, and utilizes cooling mechanism to the cooling of electromagnet, avoids electromagnet and damages because of overheating.

The invention discloses a building curtain wall material thermal insulation performance detection method, and relates to the technical field of building material detection, and the method comprises the following steps: S1, fixing the position of a building curtain wall material; s2, multi-point supporting force is provided for the building curtain wall material to detect the anti-fracture effect of the building curtain wall material; s3, a water spraying test is conducted on the building curtain wall material, and the water absorption of the building curtain wall material is detected; the external temperature of the building curtain wall material is detected through the first temperature sensor and the second temperature sensor, the heating piece and the refrigerating piece can simulate the external contact temperature of the building curtain wall material under different conditions, and the thermal insulation performance of the building curtain wall material is judged by observing the temperature ratio through the third temperature sensor and the fourth temperature sensor.

The utility model discloses a kind of heat preservation structures for composite electric dust collector, for heat preservation electric dust collector, including heat preservation layer, waterproof layer and fixed component;Heat preservation layer is from inside to outside in turn for inner heat preservation layer, middle heat preservation layer and outer heat preservation layer and is wrapped in the outside of electric dust collector;Fixed component is located between middle heat preservation layer and outer heat preservation layer, and is connected with electric dust collector;The outside of outer heat preservation layer is connected with waterproof layer;Waterproof layer includes glass fiber cloth and corrugated aluminum plate;Glass fiber cloth and corrugated aluminum plate are wrapped from inside to outside outer heat preservation layer;The utility model passes through inner, middle, outer three layers of heat preservation material and wraps electric dust collector, effectively blocks the dissipation of high-temperature flue gas heat in electric dust collector interior to outside low-temperature environment, also reduces the cooling effect of external cold air to shell, various moisture can be effectively prevented by waterproof layer and penetrated to heat preservation layer interior, overall can ensure that electric dust collector is in stable working temperature environment, so that it always maintains efficient dust removal state.

The utility model relates to the technical field of injection molding, in particular to an efficient cooling water tank for injection molding, which comprises a water tank box, a backflow box is fixedly mounted at the bottom end of the water tank box, a first heat dissipation fin group is fixedly mounted in the backflow box, an end cover is fixedly mounted at the top end of the first heat dissipation fin group, and a cooling water tank is fixedly mounted at the bottom end of the first heat dissipation fin group. A support is installed at the bottom end of the backflow box, a semiconductor chilling plate is fixedly installed on the support, the cold end of the semiconductor chilling plate is attached to the first heat dissipation fin set, water pumps are evenly and fixedly installed on the backflow box, guide pipes are installed between the water pumps and the water tank box, and the water tank box is communicated with the end cover. According to the cooling device, the clean water can circularly dissipate heat and cool the part, hot water making contact with the part can make contact with the first heat dissipation fin set in the circulating process, the first heat dissipation fin set can cool water with the high temperature, the circulating clean water is kept at the low temperature, and the effect of improving the cooling speed is achieved.

The utility model discloses a vehicle-mounted radiator, including heat dissipation subassembly, including installation frame, fixed fixed transverse board on the inner wall of installation frame, fan fixed on fixed transverse board, the curved flow -through pipe fixed on the inner wall of installation frame, pass through the outer wall of installation frame and fixed cooling liquid inlet of one end of curved flow -through pipe and pass through the outer wall of installation frame and fixed cooling liquid outlet of the other end of curved flow -through pipe, dustproof subassembly, drip cooling subassembly. This kind of vehicle-mounted radiator, can block the impurity in the air through the dustproof net and dust screen set up, avoid the normal operation of fan to be affected by the impurity, and through motor drive pivot rotation, drive L type board and clean brush rotation, make clean brush can sweep down the impurity on the surface of dust screen, can avoid the impurity and reduce the air intake of fan to block dust screen, thereby reduce cooling effect.

The application is suitable for the technical field of mechanical assembly, and provides a spinning machine groove cylinder shaft liquid nitrogen cold assembly device.The device comprises a cooling system and an assembly system.The cooling system is composed of a liquid nitrogen storage bottle, an evaporator, a cooling rack and a cooling cylinder.The assembly system is an assembly mechanical arm, and further comprises a driving control mechanism, a flow adjusting mechanism and a supporting mechanism.The flow adjusting mechanism is composed of a fixing base, a reciprocating assembly, a mounting shaft and an S-shaped spoiler.The supporting mechanism cooperates with the driving control mechanism to complete automatic feeding and discharging of the spinning machine groove cylinder shaft, which not only facilitates rapid cooling of the spinning machine groove cylinder shaft by low-temperature nitrogen, but also facilitates clamping and interference assembly of the spinning machine groove cylinder shaft by the assembly mechanical arm.The flow adjusting mechanism cooperates with the driving control mechanism to complete disturbance of the low-temperature nitrogen, and forms a circulation mode of airflow acceleration and airflow supply in the cooling cylinder, so that the low-temperature nitrogen can fully contact with the spinning machine groove cylinder shaft, eliminates airflow dead angles, reduces the cooling and cold assembly time of the spinning machine groove cylinder shaft, and meets the demand of the device for batch cold assembly of the spinning machine groove cylinder shaft.

The invention relates to the technical field of power distribution cabinet heat management, and discloses a power distribution cabinet heat dissipation control method and system based on temperature rise prediction. The method comprises the following steps: making a ratio of real-time thermal resistance to reference thermal resistance to obtain a heat dissipation capability attenuation coefficient; inputting the highest node temperature and the heat dissipation capability attenuation coefficient into a temperature rise prediction model to obtain a future prediction temperature sequence; when the predicted temperature in the future predicted temperature sequence exceeds a safety threshold value, performing direct proportion compensation on an output power instruction by using the heat dissipation capability attenuation coefficient to trigger a cooling action; and driving the weight coefficient corresponding to the heat dissipation capability attenuation coefficient in the temperature rise prediction model and the reference thermal resistance to update synchronously on line according to the prediction execution deviation. The prediction accuracy of heat dissipation control of the power distribution cabinet in the whole life cycle of the heat dissipation device and the time sequence stability of advanced control are improved.

The utility model discloses a kind of methanol engine fuel supply systems, it is related to methanol engine field, the output of methanol tank is communicated with the input of first hydraulic pump and the input of flow valve respectively, when starting methanol engine, fuel in methanol tank is first delivered to methanol liquid rail after pressurizing by first hydraulic pump, heating module is provided in methanol liquid rail, pressurized methanol is heated up quickly by heating module, methanol fuel is directly delivered to the cylinder of engine after reaching predetermined temperature, and engine is started;In the stage that engine just starts, the mixture of methanol and air in conveying pipeline is pressurized and heated to predetermined condition by electronic supercharger, and the flow of cooling liquid in the condensing end of intercooler is reduced, the cooling capacity of the condensing end of intercooler to the mixture after pressurized and heated is reduced, to ensure that the mixture into the cylinder of engine can be at higher temperature, to maintain the low-speed smooth running of engine starting initial stage.

The utility model discloses a kind of production devices of high-strength normal-pressure sintered silicon carbide products, it includes: production device main body, the outer surface of production device main body is fixedly connected with motor, the output end of motor is fixedly connected with bevel gear one, the outer surface of bevel gear one is engaged connection with bevel gear two, the inner wall of bevel gear two is fixedly connected with rotating rod one, the upper end of rotating rod one is fixedly connected with spur gear one, the outer surface of spur gear one is engaged connection with spur gear two, sintered silicon carbide product is installed on bracket and waits cooling, by the rotation of motor, the rotation of two rotating rods two can be directly driven, bracket is located rotating rod two, so that sintered silicon carbide product can be evenly cooled, reduce the problem of local overheating or uneven cooling;By rotating screw rod on rotating fixing frame, the position of bracket can be adjusted, it is convenient to adjust according to the height of silicon carbide product, silicon carbide product of different height can be adapted.

The invention belongs to the technical field of food engineering automation control, and discloses an orange juice filling process cooperative control method based on viscosity and oxygen content feedback. The method comprises the following steps: acquiring orange juice viscosity, dissolved oxygen concentration and temperature data in real time through multiple detection sites, constructing a three-parameter coupled dynamic state space model, identifying nonlinear lag response characteristics between viscosity change and dissolved oxygen change, calculating a cross sensitivity matrix, determining a conflict region and generating a Pareto feasible region. On the basis, a sectional temperature-flow rate cooperative control track is designed for different filling stages, and an oxygen isolation layer is formed through microbubble injection. And monitoring a liquid level oscillation spectrum to identify a secondary dissolved oxygen absorption characteristic peak, and correcting cooling section parameters of a control track in real time. Dynamic balance of viscosity fluidity and oxidation inhibition is realized, product quality stability and shelf life are improved, and production efficiency is improved.

The utility model discloses a magnetic suspension centrifugal heat pump heat recovery system which comprises an extraction pipeline, a sugar melting pipeline, a water outlet pipeline and a heat recovery pipeline, and the extraction pipeline is sequentially connected with an extraction heating heat exchanger, an extraction device, an extraction cooling heat exchanger, a separator and an extraction blending barrel through a hot water tank; the water outlet pipeline flows through the high-temperature heat release side of the high-temperature magnetic suspension centrifugal heat pump unit and then is divided into two paths, one path is connected to the front end of the extraction device, and the other path is connected to the front end of the sugar melting device of the sugar melting pipeline. The high-temperature magnetic suspension centrifugal heat pump unit is used for recycling waste heat of hot water, the waste heat and heat energy generated by acting are transmitted to the front end of the extraction device and / or the sugar melting device, and meanwhile water in the heat recycling pipeline is cooled by absorbing heat or cooled and flows back to the extraction cooling heat exchanger. Cooling circulation and ice water loss of the extraction cooling heat exchanger are reduced, heat energy recycling is achieved, and the comprehensive energy utilization rate is greatly increased.

The utility model provides a kind of amorphous alloy continuous casting device, including the vacuum smelting bin and vacuum casting bin and continuous casting mechanism of sealed communication, vacuum smelting bin with the vacuum casting bin between being equipped with melt casting partition door, vacuum smelting bin is connected for maintaining the vacuum system of vacuum environment in bin;The continuous casting mechanism includes the casting cavity being located in the mobile groove below, the guide casting head being movably connected with the discharge end of casting cavity, and the pull casting seat being fixedly arranged at the end of guide casting head away from casting cavity.The amorphous continuous casting device provided in the utility model prevents raw material oxidation with vacuum double bin and vacuum system, and guarantees purity;Melting mechanism efficiently melts and directionally pours material, silicon carbide filter screen accurately removes impurities;Mobile groove accurately switches station, and sealing butt joint prevents pollution;Guide casting head and uniform speed pull casting seat guarantee ingot forming.

The application relates to the field of concrete processing, in particular to a mixing and heating device for recycled asphalt concrete. The mixing and heating device for recycled asphalt concrete comprises a mixing and stirring device arranged on the ground, a flue gas collecting device arranged at the mixing and stirring device and used for collecting flue gas generated by the mixing and stirring device; the flue gas collecting device comprises collecting covers arranged at openings of the mixing and stirring device and a conveying pipeline used for connecting the collecting covers into a whole, a bag-type dust collector arranged at one end of the conveying pipeline away from the collecting covers, the bag-type dust collector being used for generating negative pressure in the collecting covers and the conveying pipeline, and a flue gas pretreatment device arranged in the conveying pipeline and used for removing oil stains in the flue gas, so that the damage of the oil stains to the bag-type dust collector is reduced.

The application discloses a method for controlling the bainite structure component of steel, which comprises the following steps: S1, controlling the parameters of the hot rolling process of the steel billet, including reducing the opening rolling temperature by 50-100 DEG C, reducing the rolling speed by 3-10%, and water cooling between the rolling mill racks to form a low final rolling temperature; and S2, after the final rolling is completed, forcibly cooling the rolled piece at a cooling speed of 50 DEG C / s-300 DEG C / s, so that the temperature of the rolled piece rapidly enters the two-phase region or even below the Ac1 line, thereby slowing down or inhibiting the dynamic recrystallization process of the deformed austenite, and making the cooling curve "chase" the continuously right-moving pro-eutectoid ferrite line. By adopting the technical scheme of the application, a significant amount of ferrite component can be obtained for the bainite steel under the hot rolling condition, that is, a ferrite+bainite complex phase structure with different proportions is formed, so that the strength and the toughness and plasticity of the steel can be regulated in a large range.

The invention discloses a stainless steel on-line solid solution acid-free descaling method capable of reducing work hardening, a solid solution process is to carry out on-line solid solution by using waste heat on the surface of a steel coil, an acid-free descaling process is carried out after the solid solution process, and the specific process comprises the following steps: (1) carrying out S roller treatment and scale breaking treatment on a stainless steel strip after the solid solution process, applying tension to two sides of the steel belt through S rollers at two ends; water spraying treatment is performed during scale breaking; (2) the stainless steel strip subjected to scale breaking treatment is subjected to surface scale removal through EPS treatment; (3) the stainless steel strip subjected to EPS treatment is brushed through a roller brush; (4) carrying out rinsing treatment on the stainless steel strip subjected to scrubbing treatment; and (5) the rinsed stainless steel strip is dried and then enters a coiling machine to be coiled into a finished steel coil.

This invention relates to the field of industrial aluminum alloys and discloses a method for improving the uniformity of homogeneous cooling. The method includes: determining the volume of homogeneous cooling water and the initial opening degree of the homogeneous cooling chamber water valve based on the temperature of the bar; extracting the chaotic state characteristics of the homogeneous cooling water based on chaos theory, performing multi-step prediction and risk assessment, and training a neural network model of the adjustment amount of the homogeneous cooling water temperature and the opening degree of the homogeneous cooling chamber water valve under the constraint of a stable operating range; outputting the opening degree adjustment amount through the neural network model, and using a co-evolutionary mechanism to optimize and decompose the water valve opening degree adjustment amount into independent evolutionary subpopulations of temperature deviation, energy consumption, chaotic stability, and response smoothness, and dynamically weighting and combining them to obtain the globally optimal opening degree adjustment amount; determining the final opening degree of the homogeneous cooling chamber water valve based on the globally optimal opening degree adjustment amount corresponding to the current homogeneous cooling water temperature and the initial opening degree of the homogeneous cooling chamber water valve. This achieves precise, stable, and efficient control of homogeneous cooling.

The utility model relates to water cooling water pump technical field, concretely relates to a water inlet structure and water cooling water pump, including main pump body, water supply pipe and cooling pipe, the upper part of main pump body is provided with cavity, the lower part of cavity is provided with mounting cavity, the inside of mounting cavity is provided with pump shaft. The utility model discloses through setting up auxiliary chamber in one side of main pump body, and through the flow -through groove, the inside space of auxiliary chamber is communicated with mounting cavity, when the temperature in pump body rises, the high pressure air in mounting cavity can pass through the flow -through groove and enter the inside of auxiliary chamber, through the design adjustment one -way air valve of the inside setting of auxiliary chamber, makes the pressure in mounting cavity once reaches critical point, will radiate to the air in pump body outside, makes the pressure in pump body inside always in normal state, effectively avoided the problem that the sealing sleeve assembly displacement led to mounting cavity in liquid leakage erosion pump body internal part because of pressure too big.

The utility model relates to the technical field of dechlorination towers, and discloses a dechlorination tower cooling structure which comprises a main body assembly and a backflow assembly fixed on the main body assembly, and further comprises a conveying assembly, the conveying assembly is arranged at the bottom of the main body assembly, and a lifting assembly used for guiding waste gas is arranged in the main body assembly; according to the utility model, under the action of high-heat waste gas, the lifting platform is jacked up, at the moment, a plurality of backflow holes leak out, and the high-heat waste gas enters the confluence pipe through the backflow holes, is converged to the bottom of the tower body through the branch pipes and is mixed with dechlorination liquid again, so that the waste gas is subjected to secondary dechlorination while the temperature of the waste gas is reduced; therefore, the circulating dechlorination effect on the high-heat waste gas is achieved, the cooling efficiency is enhanced, when the branch pipes made of copper are used for conveying the waste gas, heat exchange between the waste gas and the outside is enhanced, and the cooling effect on the waste gas is further reduced.

The present application provides an electric working machine and an angle grinder. A grinder (1) includes a motor housing (3) for housing a motor (6), a rear cover (4) disposed on an axis (L) of a motor shaft (14) of the motor and for housing electronic components (switch, controller, brush, power cord) other than the motor, and a fan (16) rotated in conjunction with driving of the motor, and a cooling flow passage is formed in the motor housing and the rear cover for passage of air drawn in by rotation of the fan. An intake air duct including an outside rear surface intake port for intake of air from a radially outer side of the motor shaft and an outlet located at a position close to the motor in the axis direction for discharge of air to the motor side is formed in the rear cover as a part of the cooling flow passage. Accordingly, it is possible to prevent occurrence of adverse conditions due to foreign matter drawn into the cooling flow passage, and it is possible to prevent a decrease in cooling performance.

The utility model belongs to the technical field of dry quenching furnace structures, and particularly provides a dry quenching inclined air duct partition wall which comprises a first brick body and a second brick body, the first brick body and the second brick body are both hexahedrons, and the first brick body and the second brick body are fixedly connected in a masonry mode. According to the dry quenching ventilation method, a dry quenching inclined air duct partition wall is applied; the dry quenching furnace body comprises a cooling area, a chute area, an annular air duct and a pre-storage area, the chute area is positioned below the annular air duct, and a plurality of inclined air duct partition walls which are annularly distributed divide the chute area into a plurality of inclined air ducts; for analysis of a single air duct opening, the inclined air duct and the annular air duct form an asymmetric three-way model. The resistance in the dry quenching furnace system is related to the energy consumption of the circulating fan, the negative pressure at the inlet of the boiler and the airflow resistance are reduced, the load of the circulating fan is reduced, the power consumption of the fan is reduced, the operation cost is reduced, the equipment wear is slowed down, and the energy is saved by 0.5% from the energy consumption of the fan.