85results about How to "Efficient cycle" patented technology

The invention relates to the technical field of atherosclerosis related drugs, in particular to a macrophage membrane functionalized manganese dioxide nano-drug as well as a preparation method and application thereof in treatment of atherosclerosis. The invention relates to a macrophage membrane functionalized manganese dioxide nano-drug, which comprises an HMnO2 carrier, colchicine is loaded on the HMnO2 carrier, and a macrophage membrane is coated outside the HMnO2 carrier. The preparation can be applied to practical operation of preparing medicines for treating atherosclerosis. According to the technical scheme, the technical problem of limited treatment effect caused by single action mechanism of medicines for treating atherosclerosis in the prior art can be solved. The nano-drug in the scheme can remove ROS to play an anti-inflammatory effect, reprogram macrophages and promote cholesterol excretion, and is used for synergistically treating atherosclerosis. The macrophage membrane can target an inflammation part and escape from an immune system. And the side effect of the nano-drug is relatively small, so that the nano-drug has ideal popularization and application prospects.

The invention relates to the field of electrochemistry, in particular to a lithium ion secondary battery, a battery module, a battery pack and an electric device. The invention provides a lithium ion secondary battery which comprises a naked battery cell accommodating cavity, a naked battery cell group is arranged in the naked battery cell accommodating cavity, the naked battery cell group comprises one or more naked battery cells A and one or more naked battery cells B. The naked battery cells A comprise first positive pole pieces, the first positive pole pieces comprise first positive active materials, and the first positive active materials comprise second positive active materials. The first positive electrode active material is selected from a single-crystal or single-crystal-like low-nickel ternary positive electrode material A1, the naked battery cell B comprises a second positive electrode plate, the second positive electrode plate comprises a second positive electrode active material and / or a third positive electrode active material, the second positive electrode active material is selected from a polycrystalline high-nickel ternary positive electrode material B1, and the third positive electrode active material is selected from a polycrystalline high-nickel ternary positive electrode material B2. And the third positive electrode active material is selected from a polycrystalline low-nickel ternary positive electrode material B2. The lithium ion battery provided by the invention is relatively excellent in circulation, storage, gas production and safety performance under the conditions of high energy density and high charge state.

The invention provides a cylindrical hydrodynamic ventilation structure special for a cooling tower fan, and belongs to the technical field of cooling ventilation. Comprising a tower body, a water basin is installed at the bottom of the tower body, a water inlet pipe is installed at one end of the water basin, a water return pipe is installed at the top of the water inlet pipe, a water pump is arranged at one end of the water inlet pipe, and a water outlet pipe is installed at one end of the water basin. By arranging the worm gear speed increasing assembly and the power driving assembly, kinetic energy of water flow is converted into mechanical energy through circulation of water power, the cooling process is accelerated, complex parts such as a motor and a transmission device in a traditional cooling tower are reduced, the manufacturing cost is reduced, maintenance points and the fault rate are reduced, and the service life of the cooling tower is prolonged. The reliability and stability of the system are improved, the rotation angle adjustment of the fan blades is increased, the air volume is increased, evaporation and heat dissipation of water are accelerated, energy consumption is reduced, the flexibility of the system is enhanced, and the ventilation structure can adapt to different working environments and cooling requirements.

The invention discloses low-temperature sintering equipment for a ceramic material, and relates to the technical field of ceramic sintering. The equipment comprises a heating part, a graphite crucible and a heating spiral pipe connected to alternating current are used, low-melting-point ceramic powder is heated and melted, an integrated temperature management module is driven by a cooling pump through magnetic force, the low-temperature working state of the heating spiral pipe is kept, and the cooling pump utilizes a permanent magnet rotating disc and a magnetic plate; cooling liquid circulation without mechanical contact, efficient separation and cooling of high-temperature cooling liquid are achieved, heat absorbed by the heat absorption pieces is effectively dissipated through the cooling fins and the cooling fan, the system further comprises a switching assembly, an operator is allowed to flexibly switch between an internal cooling system and an external cold water source, and in addition, the system is convenient to operate. The equipment adopts the structural design of the separation barrel and the external sleeve barrel, heat loss is reduced through vacuum, and the heating efficiency is improved.

The invention relates to the field of microbiological detection, in particular to a method for simultaneously and rapidly detecting at least two target objects, which comprises the following steps: S101, obtaining a first mixture; s102, obtaining a second mixture; s103, centrifuging the first mixture, collecting a first supernatant, centrifuging the second mixture, and collecting a second supernatant; s104, obtaining a third mixture; and S105, analyzing the existence and / or concentration of the first target object and / or the second target object in the sample to be detected according to the fluorescence intensity signal. The method has high detection sensitivity, good specificity, reproducibility, stability and anti-interference performance, and realizes enzyme-free, DNA-free, ultra-sensitive and wide-linear-range double-target detection.

The invention relates to the technical field of acrylonitrile catalyst production, in particular to a pulping device and a pulping process for acrylonitrile catalyst production, the pulping device comprises a homogenizing mechanism, the homogenizing mechanism comprises a tank body and further comprises a sealing cover arranged above the tank body and used for feeding, a stirring pulping assembly used for stirring slurry is arranged above the sealing cover, and the stirring pulping assembly is arranged above the tank body and used for stirring the slurry. The slurry extrusion device comprises a tank body and an extrusion box arranged below the tank body, an extrusion plate used for pushing slurry and a driving assembly used for driving the extrusion plate are arranged in the extrusion box, and the extrusion plate can extrude the slurry in the extrusion box; the extruded slurry can be discharged into the tank body through the first guide pipeline to realize circulating conveying of the slurry, so that one-way circulating operation by adopting a circulating pump is avoided, the maintenance frequency of each circulating part is reduced, synchronous circulation of the slurry on the left side and the right side of the tank body can be realized in a linkage manner, and the production efficiency is improved. And compared with a traditional circulating pump, one-way circulation is more efficient.

The utility model relates to a marginal coal releasing device based on liquid carbon dioxide, which belongs to the technical field of coal mining, and particularly comprises a carbon dioxide liquid storage tank, a plurality of carbon dioxide cracking carbon exhausters and a carbon dioxide filling machine, and the carbon dioxide cracking carbon exhausters are used for being mounted in cracking drill holes of marginal coal. The air inlet end of the carbon dioxide fracturing carbon exhauster is connected with a carbon dioxide filling machine through a carbon filling pipe, the carbon dioxide filling machine is connected with a carbon dioxide liquid storage tank, and the air exhaust end of the carbon dioxide fracturing carbon exhauster is connected with an adjacent goaf through a first connecting pipe. The exhaust end of the carbon dioxide fracturing carbon exhauster is further connected with a carbon dioxide filling mixer truck through a second connecting pipe, and the first connecting pipe and the second connecting pipe are provided with a first carbon exhaust control valve and a second carbon exhaust control valve respectively. According to the utility model, carbon dioxide in different states is fully utilized in a grading manner to release leftover coal, so that the safety degree of a leftover coal mining area is effectively improved.

The present invention discloses a coal gangue thermal activation calcination process based on a cement burning system, specifically, the coal gangue is first pretreated, then calcined and cooled, and then ultra-finely ground to obtain a high-activity calcined coal gangue mixed material; wherein, the low calorific value coal gangue is first sent to an indirect pre-burning device for rotary pre-burning, then sent to a rotary kiln for thermal activation calcination, and then sent to a grate cooler for cooling; the drying heat source of the indirect pre-burning device is the hot flue gas at the tail of the rotary kiln; the high calorific value coal gangue is directly sent to an indirect thermal activation device for thermal activation and rotary calcination, and then enters a single-drum cooler for cooling; the drying heat source of the indirect thermal activation device is the hot flue gas from the grate cooler of a normal cement clinker cement burning system; the volatile organic waste gas generated in the indirect pre-burning device and the indirect thermal activation device is sent to the kiln head for combustion. The present invention solves the environmental emission problem of volatile organic matter and the risk problem of suspended calcination of coal gangue in a preheater.

The application discloses a method for treating antibiotic wastewater by using a graphdiyne / ferrous indium sulfide nanocomposite to activate persulfate, and the method is characterized by using the graphdiyne / ferrous indium sulfide nanocomposite as a catalyst to activate persulfate for degrading and treating antibiotic wastewater, wherein the graphdiyne / ferrous indium sulfide nanocomposite comprises ferrous indium sulfide nanoparticles, and the nanoparticles are loaded with graphdiyne nanosheets. The method for treating antibiotic wastewater by using the graphdiyne / ferrous indium sulfide nanocomposite to activate persulfate uses the graphdiyne / ferrous indium sulfide nanocomposite as a catalyst, wherein the nanocomposite has many reactive sites, high catalytic activity and good stability, can efficiently activate persulfate with a smaller amount of catalyst, can efficiently remove antibiotics in wastewater, and has the advantages of low cost, high treatment efficiency, good removal effect, green environmental protection and the like, and therefore, the method has important significance for effectively purifying antibiotic wastewater, has high use value and good application prospect.

This invention discloses a method for the direct oxidation of methanol to synthesize calcium formate. The method mainly involves adding a catalyst, methanol, and calcium hydroxide to a reaction vessel and then pressurizing the reaction. Under the action of the catalyst, methanol is oxidized to formic acid, which then rapidly reacts with calcium hydroxide to produce calcium formate, achieving a yield of up to 63.4%. This invention directly oxidizes methanol to synthesize calcium formate. Subsequent operations can further produce formic acid and methyl formate derivatives to increase its added value. Simultaneously, the calcium ions in the calcium formate can be effectively recycled. This invention has advantages such as readily available and simple raw materials, mild reaction conditions, convenient catalyst preparation, low production cost, and recyclability, making it highly valuable for market applications.

The present invention relates to an electrochemical carbon dioxide conversion system, which includes: a first electrode; a second electrode; and a separator membrane positioned between the first electrode and the second electrode, being porous and comprising a first layer and a second layer having different average pore sizes.

This invention belongs to the field of lithium metal battery technology, specifically relating to a fluorinated phase-separated polymer ion gel electrolyte, its preparation method and application, and lithium metal batteries. The fluorinated phase-separated polymer ion gel electrolyte provided by this invention comprises a solid phase and a liquid phase; the solid phase is a copolymer of a fluorinated acrylate monomer and a crosslinking agent containing carbon-carbon double bonds; the liquid phase comprises an ionic liquid and a lithium salt dissolved in the ionic liquid. Compared to liquid electrolytes and traditional SPEs, the fluorinated phase-separated polymer ion gel electrolyte provided by this invention has high ionic conductivity, mechanical strength, interfacial stability, and safety. It can effectively suppress the growth of lithium dendrites and adapt to large volume changes, avoiding short circuits and thermal runaway in lithium metal batteries under conditions of overcharging, over-discharging, or mechanical impact.

The utility model relates to the technical field of oil presses, and discloses an oil press with a good heat dissipation effect, which comprises a base, the top of the base is fixedly connected with an oil press body, the top of the oil press body is fixedly connected with a hydraulic oil cylinder, and the top of the oil press body is provided with a first heat dissipation mechanism. A second heat dissipation mechanism is arranged on the right side of the top of the base, the first heat dissipation mechanism comprises a protection frame, the protection frame is fixedly connected to the top of the oil press body, a heat dissipation frame is fixedly connected to the top of the protection frame, a servo motor is fixedly connected to the top of the heat dissipation frame, and a rotating shaft is fixedly connected to the bottom of the servo motor. Through the arranged first heat dissipation mechanism, when the oil press body is used, efficient circulation of cooling liquid in a heat conduction pipe is guaranteed through the connection mode of a water tank and a water pump, heat near a hydraulic oil cylinder can be taken away under the action of the heat conduction pipe, water cooling heat dissipation is conducted, and meanwhile a servo motor drives fan blades to rotate.

The invention discloses a multifunctional seed soaking and germination accelerating device for agricultural planting, and belongs to the field of agricultural planting, a discharging device comprises a fixing plate, the fixing plate is fixedly connected to the bottom of the inner wall of a planting box, a sliding groove is formed in the front face of the inner wall of a box body, and a hinge block is slidably connected to the front face of the inner wall of the sliding groove; the hinge blocks are hinged to the back faces of the planting boxes, and the front face of the inner wall of the box body is fixedly connected with first limiting blocks. Through cooperation of the electric telescopic rod and the permanent magnet, the planting box can incline in the lifting process, and crops in the planting box are promoted to move leftwards. At the moment, the pressure in the first hydraulic bin is increased, a gear is driven, a shovel plate is pushed to move crops in the planting box to the left side, discharging is achieved, liquid in the box body can be repeatedly used, due to the fact that the liquid is repeatedly used, effective circulation of liquid resources can be achieved in the process, waste is reduced, and the crops can be moved out more efficiently.

The utility model relates to the technical field of lead frames, and discloses a modular structure for a semiconductor lead frame mold, which comprises a lower mold body and an upper mold body, the outer surface of the lower mold body is provided with a clamping groove, the inner surface of the lower mold body is provided with a mold cavity, and the outer surface of the upper mold body is provided with an injection port in a penetrating manner. The lower mold body and the upper mold body are installed in an inserted mode, a fixing assembly and a circulating assembly are arranged at the other end, away from the upper mold body, of the lower mold body, the fixing assembly comprises a fixing box and a base which are fixedly installed at the other end, away from the lower mold body, of a fixing base, and a limiting base and a limiting ring are fixedly installed at the end, close to the lower mold body, of the fixing base. According to the modular structure for the semiconductor lead frame mold, through the structure and communication design of the circulating pipes, cooling liquid is efficiently circulated, the heat exchange area is increased, mold heat dissipation is effectively achieved, stable operation of the mold is guaranteed, the lifting hooks and the clamping hooks can be conveniently matched with lifting equipment, carrying of the lower mold body and the upper mold body is facilitated, and operation safety and efficiency are improved.

The present invention discloses an efficient drilling device for a high thermal conductivity heat sink, which relates to the technical field of drilling devices, and includes a main body mechanism, wherein an adjustment mechanism is fixedly connected at the top center of the main body mechanism, a pushing mechanism is fixedly connected at the top of the main body mechanism near the left edge, and a drilling mechanism is fixedly connected at the top of the main body mechanism near the right edge. In use, the present invention designs an intelligent heat dissipation system including an air pump, a negative pressure pump, and a temperature guide groove to address the problem that a drill bit is prone to high temperature after long-term use. The system can automatically inhale external cooling gas, push it to the periphery of the drill bit through pressurization for cooling, and use a negative pressure pump to discharge hot air flow to form an effective cold air flow circulation, ensure that the drill bit temperature is controlled within a safe range, and timely cool the heat generated during the drilling process, protect the drill bit and the heat sink from heat damage, and increase the service life of the drill bit.

The invention discloses bionic MOFs of red blood cells as well as a preparation method and application of the bionic MOFs, and belongs to the technical field of biological materials. Comprising drug-loaded MOFs and an erythrocyte membrane layer coated outside the MOFs, the MOFs is selected from the group consisting of UiO-66-NH2; the UiO-66-NH2 is a particle formed by connecting an amino functional group to UiO-66; a dual epigenetic drug is loaded in the drug-loaded MOFs; and the dual epigenetic drugs are CM272 and MA. By targeting three epigenetic modifications and simultaneously regulating and controlling DNA methylation, histone methylation and RNA methylation in leukemia cells, the immune response aiming at acute myelogenous leukemia is enhanced, the hypoxia microenvironment of leukemia is overcome by using the bionic MOFs particles, the therapeutic activity of the loaded medicine is enhanced, and the application prospect is broad. And inducing death of leukemia cells and leukemia cell mesenchymal stem cells.

The utility model relates to the technical field of cooling of SVG equipment, in particular to a cooling liquid release device and an SVG system, which comprise a cooling liquid tank, a water outlet pipeline, a water return pipeline and a power module, a water outlet of the cooling liquid tank is connected with one end of the water outlet pipeline, and the other end of the water outlet pipeline is connected with a water inlet of the power module. A water outlet of the power module is connected with one end of a water return pipeline, the other end of the water return pipeline is connected with a water return port of the cooling liquid tank, and a quick release assembly is further arranged on the water return pipeline. Cooling liquid in the cooling liquid tank reaches the power module through the water outlet pipeline, so that heat generated by the power module is taken away, and the cooling liquid flowing through the power module flows into the cooling liquid tank through the water return pipeline. When the power module breaks down, the cooling liquid in the power module needs to be discharged and the power module needs to be replaced, and the cooling liquid in the power module can be quickly released by arranging the quick release assembly, so that the fault processing time is shortened.

The utility model relates to kitchen small household electrical appliance technical field, concretely relates to a kind of compact air fryer of high-efficiency heating, including shell, upper pot body component, lower pot body component, heating mechanism, air deflector etc., upper pot body component and lower pot body component are arranged up and down in vertical direction, not traditional side by side, this makes equipment more compact in width direction, heating mechanism is centrally arranged in shell, the heating mechanism includes the heating pipe generating heat and fan driving air circulation, air deflector is arranged in front of the air outlet of heating mechanism, is the core component of high-efficiency heating, the air deflector is designed with the lower air deflector channel of downwardly inclined extension, the air outlet of lower air deflector channel is accurately aligned with the air inlet of pot body component, hot air is efficiently guided to upper pot cooking space, the utility model overcomes the problem that existing double-pot air fryer is designed more left and right, leading to equipment overall width is larger, occupies kitchen countertop space more, not enough compact.

The invention relates to the technical field of diesel generator cooling, in particular to a circulating cooling type diesel generator set which comprises a bottom plate, a diesel engine installed in the middle of the top face of the bottom plate, a generator body installed at one end of the top face of the bottom plate, a radiator installed at the other end of the top face of the bottom plate, a shell installed at the rear end of the top face of the bottom plate and a turning plate rotationally connected to the shell. The upper end of the radiator is communicated with a water inlet tank, the lower end of the radiator is communicated with a water outlet tank, a liquid storage tank is installed on the top face of the shell, and the lower end of the liquid storage tank is communicated with the water inlet tank. Continuous and efficient circulation of cooling liquid is achieved, it is ensured that heat generated in the working process of a diesel engine can be effectively taken away in time, the heat dissipation efficiency of a radiator is improved, the external temperature of the diesel engine and a generator body during working is reduced, and the diesel engine and the generator body can still work even under the severe working conditions of high temperature, high load and the like. And the efficient heat dissipation effect can be kept, and a powerful guarantee is provided for stable operation of the diesel engine.

The utility model relates to the technical field of gyro wheel needle bearing, and disclose a gyro wheel needle bearing with flange of outer ring, including: bearing body, setting the bearing outer ring of bearing body outside, setting the bearing inner ring of bearing body inside, fixedly connected in the rubber ring of bearing outer ring inner wall, and fixedly connected in the installation subassembly between bearing outer ring and bearing inner ring, this gyro wheel needle bearing with flange of outer ring, can evenly bear the load through horizontal needle, guarantee the stability of bearing operation, utilize vertical needle and increase the load capacity of bearing, through vertical needle and horizontal needle mutual cooperation, can bear the load in different directions, lubricating oil can enter the oil hole from the oil hole and reach the working surface of horizontal needle, vertical needle through oil hole no.

The application relates to the technical field of energy storage liquid flow batteries, in particular to a liquid flow battery with a solid-phase energy storage mechanism. The negative electrode system of the liquid flow battery comprises a solid-phase energy storage material and a negative electrode electrolyte. The energy storage active substance of the solid-phase energy storage material is selected from at least one of lead single substance and a lead-containing precursor compound capable of providing an active lead source through in-situ conversion in the negative electrode electrolyte; the negative electrode electrolyte comprises vanadium ions as a redox couple, chromium ions, and a supporting electrolyte solution composed of hydrogen ions and mixed anions, wherein the mixed anions are an ion combination of chloride ions and sulfate ions and / or bisulfate ions. The application designs a negative electrode solid-phase energy storage conversion process jointly participated by chromium ions (Cr 2+ ) and vanadium ions (V 3+ ), widens the potential window of the negative electrode side redox reaction, improves the energy density of the battery system, and first constructs a solid-phase energy storage mechanism based on a negative electrode.

The utility model discloses lampblack waste gas treatment equipment, which comprises a venturi tower, a cyclone demisting tower, a packed tower and an exhaust component, the gas inlet end of the cyclone demisting tower is communicated with the gas outlet end of the venturi tower, the gas outlet end of the cyclone demisting tower is communicated with the gas inlet end of the packed tower, and the gas outlet end of the packed tower is communicated with the gas outlet end of the venturi tower. The air inlet end of the exhaust assembly is communicated with the air outlet end of the packed tower; the Venturi tower is used for pre-treating the lampblack waste gas, the cyclone demisting tower is used for carrying out liquid-gas separation on the pre-treated lampblack waste gas, and the packed tower is used for carrying out secondary washing on the waste gas and then discharging the waste gas through the exhaust assembly. According to the cooking fume waste gas treatment equipment, the cooking fume waste gas is subjected to wet treatment, pretreatment is carried out through the Venturi tower, liquid-gas separation is carried out on the pretreated waste gas through the cyclone demisting tower, secondary washing is carried out through the packed tower, then the waste gas is discharged through the exhaust assembly, and the treatment effect can be effectively guaranteed by adopting multi-stage treatment operation.

The anti-overheating device for the automobile repair part surface decoration machining robot comprises the machining robot, and a fixing plate is fixedly connected to the bottom of the machining robot. The cooling assembly is adsorbed to the surface of the machining robot through the magnetic block, meanwhile, the refrigeration assembly is started, the temperature guide block is cooled through the refrigeration piece, the interior of the water tank is cooled through the temperature guide block, meanwhile, the cooling fan is started to cool the cooling block, and the cooling block conducts heat dissipation on the right side of the refrigeration piece; and meanwhile, a submersible pump is started, water is supplied to a water supply box through the submersible pump, then water is conveyed into a copper pipe through a connector, then the copper pipe cools a copper block, the machining robot is cooled through a temperature conduction piece, and the functionality of the machining robot can be guaranteed. And an existing mode that heat dissipation is not carried out on the machining robot is replaced, and therefore heat dissipation can be conveniently carried out on the machining robot.

The present invention discloses a ventilation and cooling system based on a high geothermal tunnel, wherein the high geothermal tunnel includes a main tunnel and an inclined shaft connected to the main tunnel, and also includes a circuitous pilot pit connected to the main tunnel. The ventilation and cooling system includes: an air storage device is arranged at the connecting junction of the main tunnel and the inclined shaft, and wind is transported to the air storage device through the inclined shaft, and wind is output through the air storage device and circulated into the main tunnel; a plurality of wind relay devices are arranged at equal intervals along the output direction of the air storage device in the space of the main tunnel, and are used to uniformly transmit wind to each section of the main tunnel; a cooling device is arranged in the air storage device, and is used to reduce the temperature of wind input into the air storage device. The present invention has the technical effect of making each construction working surface of the tunnel evenly ventilated and having good cooling measures, and can be widely used in the field of tunnel construction technology.

The utility model discloses dialysis equipment capable of monitoring blood glucose, and relates to the technical field of blood glucose monitoring instruments. The collecting unit is used for draining the blood volume of the dialysis equipment through a drainage pipeline; the temperature adjusting unit is provided with a plurality of areas to be measured and is connected with the drainage pipeline; the temperature control unit is used for acquiring a temperature signal of the temperature sensor in the to-be-detected area so as to control the heating element in the to-be-detected area; the detection unit is used for acquiring the blood of each to-be-detected area, detecting the blood glucose level and sending the blood glucose level to the analysis unit; the analysis unit is used for comparing and analyzing the blood glucose value and standard blood glucose and sending an analysis result to the display unit; and the display unit is used for displaying the analysis result sent by the analysis unit and a chart made by the analysis result. According to the blood glucose monitoring system, safe and effective blood glucose monitoring in the dialysis treatment process can be achieved through the collecting unit, the temperature adjusting unit, the temperature control unit, the detecting unit and the like.

The efficient cooling device comprises a machine body, an observation window is fixed to the front face of the machine body, a warning lamp is fixed to the top of the machine body, a fixing block is fixed to the left side of the machine body, an air gun communicated with the machine body is inserted into the fixing block, and a control box is fixed to the right side of the machine body. The front face of the machine body is in sliding connection with a cooling assembly, and the cooling assembly is used for reducing the temperature of the workpiece. According to the efficient cooling device of the numerical control vertical type twill grinding machine, cooling oil used by the machine body can flow into the storage box and is filtered through the filter plate, the filtered cooling oil can be pumped into the machine body again through the water outlet pipe to be used, the filter plate can be periodically cleaned through the arranged cleaning assembly, and the cooling efficiency is improved. Therefore, the filtering efficiency is effectively guaranteed, the overall circulation is more efficient, the overall structure is simple, and the overall practicability is effectively improved.

The invention discloses wide-temperature-range high-vacuum brazing equipment and a using method thereof, and relates to the technical field of brazing equipment, the wide-temperature-range high-vacuum brazing equipment comprises a vacuum heating tank body, a metal heating cylinder arranged in the vacuum heating tank body and a vacuum system used for enabling the interior of the vacuum heating tank body to be in a vacuum state, and the heating temperature of the metal heating cylinder is adjustable. The vacuum heating tank body is provided with a soft soldering working state and a hard soldering working state, and the water path subsystem is used for cooling the vacuum heating tank body, so that the vacuum heating tank body is switched from the hard soldering working state to the soft soldering working state. The wide-temperature-range high-vacuum brazing equipment is unique in design, and flexible switching of the equipment between a soft brazing working state and a hard brazing working state is achieved through the temperature-adjustable metal heating cylinder; and meanwhile, a water path subsystem arranged in the device effectively adjusts the temperature, the multifunctionality and the operation flexibility of the device are enhanced, and the device is suitable for various brazing requirements.

The utility model relates to the technical field of lithium battery production auxiliary equipment, in particular to a flame-retardant storage device for lithium battery raw materials, which comprises an inner box body, a left inner box door and a right inner box door which are mutually symmetrical are hinged on the front side face of the inner box body, a gas suction pump is arranged outside the inner box body, and a suction pipe is fixedly mounted at the gas inlet end of the gas suction pump. The suction pipe extends into the inner box body, a nitrogen generator and a gas delivery pump are further arranged outside the inner box body, the gas inlet end of the gas delivery pump is communicated with the nitrogen generator through a gas inlet pipe, a gas outlet pipe is fixedly installed at the gas outlet end of the gas delivery pump, and a left uniform distribution pipe and a right uniform distribution pipe are fixedly installed on the gas outlet pipe; the two uniform distribution pipes are fixedly installed on the inner walls of the left side and the right side of the inner box body respectively, and air outlet ends are fixedly installed at the bottom ends of the uniform distribution pipes and fixedly installed on the bottom wall of the inner box body. The lithium battery has the advantage of flame-retardant storage, and combustion reaction of raw materials of the lithium battery is effectively inhibited.

The invention discloses a method and equipment for processing and producing second-class base oil by taking first-class base oil regenerated by waste lubricating oil as a raw material, and belongs to the technical field of regenerated lubricating oil. Atmospheric and vacuum distillation is combined with NMP solvent refining, and the waste lubricating oil is regenerated into qualified first-class base oil to serve as an exclusive raw material; preheating the raw material to 60-80 DEG C under the protection of nitrogen, and introducing the preheated raw material into an adsorption column at a flow rate of 0.5-2.0 BV / h, so that the raw material sequentially passes through a macroporous silica gel layer (the particle size is 0.1-1.5 mm) and an active white clay layer (the mass ratio of the macroporous silica gel layer to the active white clay layer is 2: 1) with specific parameters, and deep synergistic adsorption refining is carried out; after the refined oil enters a storage tank, vacuum is applied to suck residual oil in the column into the tank, and second-class base oil is obtained after heat preservation sedimentation and precise filtration. Under the mild non-hydrogenation condition, high added value upgrading of the waste lubricating oil is achieved, and the method has the comprehensive advantages of being efficient in process, high in product yield, stable in quality and low in energy consumption and cost.