31results about How to "Slow heating" patented technology

The invention discloses cool polyurethane synthetic leather as well as a preparation method and application thereof. The synthetic leather is sequentially composed of a cool polyurethane surface layer, a polyurethane thermal insulation layer, a polyurethane foaming bonding layer and a base material layer from top to bottom, wherein the cool polyurethane surface layer is prepared from the following components in parts by weight: 100 parts of polyurethane resin, 2-4 parts of a wear-resistant additive, 1-2 parts of a curing agent and 1-5 parts of cool color paste; the cool color paste is prepared by mixing 1-10 parts of a microcapsule phase change material, 2-10 parts of an infrared reflection pigment and 40-60 parts of water; the polyurethane heat insulation layer comprises polyurethane resin and hollow silicon dioxide modified by a silane coupling agent. The infrared reflection pigment and the microcapsule phase change material in the cool polyurethane surface layer reduce the surface temperature of the polyurethane synthetic leather. Meanwhile, a heat insulation material in the polyurethane heat insulation layer and a foaming process of the polyurethane foaming bonding layer are combined, so that the cool-feeling polyurethane synthetic leather material which is slowly heated at high temperature in summer is prepared.

The utility model relates to a motor shaft air cooling structure which comprises a motor output shaft, a cooling channel is arranged in the motor output shaft in a penetrating mode, a fan is further arranged on the motor output shaft, the motor output shaft drives the fan to rotate synchronously, and air generated by rotation of the fan enters the cooling channel. An output positioning block is arranged at one end of the motor output shaft, a containing cavity communicated with the cooling channel is formed in the output positioning block, and the fan is located in the containing cavity; the inner wall of the containing cavity is bent to form a sixth positioning step, and the side face of the fan makes contact with the sixth positioning step. Compared with the prior art, the cooling channel and the fan are arranged in the motor output shaft, the fan is driven to rotate synchronously when the motor output shaft rotates, wind is generated when the fan rotates, and the wind enters the cooling channel through the horn mouth and rapidly takes away heat of an object in contact with the motor output shaft through the motor output shaft. And rapid heat dissipation and cooling of the motor are realized.

The utility model belongs to the technical field of waste gas treatment of printing and dyeing equipment, particularly relates to waste gas treatment equipment of a printing and dyeing setting machine, and provides the following scheme aiming at the problems of complicated operation, low dust purification efficiency and low safety of the existing wet-type electrostatic waste gas treatment equipment. The system comprises a gas inlet link, a combustion link, a filtering link and an energy recovery link, can realize comprehensive and efficient utilization of energy while treating dust and organic gas in waste gas of the setting machine, can prevent dust and oil smoke from being accumulated and attached to the inner walls of pipelines and equipment in the combustion process, and can ensure long-time reliable and stable operation of the system.

The utility model provides a gas cooking utensil with high temperature protection, which comprises a gas stove body and a countertop arranged on the top of the gas stove body, two burner components are arranged on the surface of the countertop, the outer sides of the two burner components are respectively covered with a supporting heat insulation table, an energy gathering ring is embedded in the center of the top of each supporting heat insulation table, and the energy gathering rings are arranged on the top of the gas stove body. The supporting heat insulation table of the hollow closed structure and the matched energy-gathering ring are designed in the energy-gathering type energy-saving stove to physically isolate flames from the outside in space, so that heat radiation of the flames to a kitchen is reduced, meanwhile, the bottom of a pot is supported at the top of the energy-gathering type energy-saving stove, the energy-gathering type energy-saving stove is convenient to use, and the energy-gathering type energy-saving stove is more energy-saving and environment-friendly. A liquid containing groove in the heat dissipation disc is used for adding a water source for heat dissipation, flames are not exposed during combustion, the flames cannot be seen from the front face basically, heat generated during combustion of the flames cannot be directly radiated, the temperature rise of a kitchen is further reduced, the heat insulation and energy gathering effects can be further improved, and the combustion heat efficiency is improved.

The invention relates to the technical field of machine tool accessories, in particular to a cutting speed controllable numerical control machine tool for cylinder sleeve machining, which comprises a numerical control machine tool main body, a machined cylinder sleeve barrel arranged in a machining cavity on the numerical control machine tool main body, a clamping seat for driving the cylinder sleeve barrel to rotate, and a cutter mechanism for cutting, in normal cutting machining of the cylinder sleeve, a fixed cutter makes contact with the high-speed rotating cylinder sleeve for cutting, if the cutter is accidentally heated and overheated, emergency transmission can be automatically triggered, and finally the cutter is caused to move in a surrounding mode in the rotating direction of the cylinder sleeve, so that the rotating speed of the cylinder sleeve relative to the cutter is reduced, the cutting speed is reduced, cutting is gentle, and the cutter is cooled; and then, the surrounding speed of the cutter is automatically adjusted and reduced, finally, the cutter keeps surrounding at the uniform speed, and although the cutter is heated, overheating is avoided, and long-time cutting work is safely coped with.

This invention relates to the field of welding cooling device technology, and discloses a welding cooling and protective fixture for electronic expansion valves. The fixture includes a protective housing, a baffle fixedly connected to the inner wall of the protective housing, a mold cavity formed in the inner wall of the baffle for placing the expansion valve body, and a cooling mechanism provided on the inner wall of the protective housing. The cooling mechanism includes a sealing shell, the bottom of which is fixedly connected to the inner wall of the protective housing, and the inner wall of the sealing shell contacts the outer wall of the expansion valve body for cooling the expansion valve body piping. A flow guiding cavity is formed in the inner wall of the sealing shell. This invention cools the expansion valve body piping by setting a cooling mechanism with a spiral flow channel, and by using a one-way valve inside the butt joint block to intercept the coolant when the protective housing is released after welding the expansion valve body, preventing coolant leakage and thus avoiding defects at the weld joint, thereby increasing the stability of the electronic expansion valve welding process.

The utility model belongs to the technical field of waste gas treatment, particularly relates to waste gas treatment equipment of a setting machine, and provides the following scheme aiming at the problems of large size, complicated operation and safety of the existing wet-type electrostatic waste gas treatment equipment: the waste gas treatment equipment comprises a gas inlet link, a combustion link, a filtering link and an energy recovery link; according to the waste gas treatment equipment for the setting machine, pollutants in waste gas discharged by the setting machine are reliably, stably and efficiently treated, meanwhile, comprehensive utilization of energy is achieved by adopting multiple measures, and the operation cost of the system is reduced.

The invention relates to a net-free thin-spraying supporting material and a preparation method thereof, and belongs to the technical field of coal mine tunnel surface supporting, and the net-free thin-spraying supporting material is obtained by mixing a component A, a component B and a component C according to the mass ratio of (1-3): 1: (1-3); wherein the component A is prepared from the following raw materials: a polymeric monomer, a functional monomer, a plasticizer, a thickening agent, a toughening agent, reinforced resin, a stabilizer and a reducing agent; the component B is prepared from the following raw materials: a polymeric monomer, ABS, a functional monomer, a plasticizer, a thickener, a flexibilizer, a stabilizer and an initiator; the component C is prepared from the following raw materials: a coupling agent, isocyanate, polyol, a reactive diluent, nano silicon dioxide particles, a defoaming agent, a catalyst, an auxiliary agent and polyaspartic acid ester. The net-free thin spraying support material provided by the invention has relatively high bonding strength, tensile strength, breaking strength and elongation at break and excellent flame retardant property.

The invention belongs to the technical field of brake linings, and particularly relates to a brake lining and a preparation method and application thereof. The brake lining provided by the invention comprises a friction block, and further comprises a first steel backing, a second steel backing and a third steel backing, and the friction block is arranged on one surface of the first steel backing; the second steel backing is arranged on the face, back to the friction block, of the first steel backing. The heat insulation layer is arranged between the first steel backing and the second steel backing; the friction block is made of a friction material; the friction material comprises aluminum nitride. In the using process of the brake lining, the temperature of the back face of the steel backing is low, the influence on the temperature of brake fluid is small, the temperature rise of the brake fluid is small, the brake fluid is protected in the high-load brake environment, the brake fluid is kept at the low temperature, and the running safety of a vehicle is ensured.

The embodiment of the present application provides a coating and a preparation method thereof. In parts by weight, the coating includes 40 to 50 parts of modified epoxy acrylate, 10 to 15 parts of aromatic polyurethane acrylate, 16 to 36 parts of functional monomers, 3.2 to 5.4 parts of photoinitiators, and 5 to 10 parts of curing agents. Among them, the modified epoxy acrylate is adipic acid-modified epoxy acrylate, and the functional monomer includes at least one of dipropylene glycol diacrylate and tripropylene glycol diacrylate. By compounding these specific ratios of modified epoxy acrylate, aromatic polyurethane acrylate, functional monomer, photoinitiator and curing agent, the coating has a long activation period, low curing energy, good film toughness, good adhesion and good sealing effect on pine wood.

The utility model discloses an electromagnetic cooking utensil, and belongs to the technical field of kitchen utensils, the cooking utensil comprises a shell and an electromagnetic wire coil arranged in the shell, and further comprises a nonmetal first wave-absorbing shielding piece located between the shell and the electromagnetic wire coil, the first wave-absorbing shielding member is pasted and fixed on one side, facing the electromagnetic wire coil, of the housing. According to the application, an additional space for accommodating a fastener and a mechanical fixing structure is not needed in a sticking and fixing mode, so that the internal space of the cooking utensil can be more effectively utilized, reasonable utilization of the space is realized, on one hand, miniaturization of the whole cooking utensil is facilitated, on the other hand, the distance between the magnetic isolation sheet and the electromagnetic wire coil can be optimized, and the service life of the electromagnetic wire coil is prolonged. The probability of resonance of the magnetism isolating sheet under the action of magnetic field force is reduced, the mounting position of the magnetism isolating sheet is guaranteed, and therefore the magnetism isolating effect is guaranteed.

The utility model provides an electric drive axle and a new energy vehicle, and relates to the technical field of vehicle engineering, the electric drive axle provided by the utility model comprises an axle housing, a transmission and an oil guide piece; the transmission is provided with a main reduction gear with the axis extending in the horizontal direction, the axle housing is connected with the transmission, oil immersing part of the main reduction gear from bottom to top is arranged in the axle housing, the oil guide piece is connected with the axle housing or the transmission, the oil guide piece is provided with an oil guide face extending in the circumferential direction of the main reduction gear, and the oil stirred by the main reduction gear can be prevented from impacting the axle housing; the resistance to oil is small, impact on the axle housing caused by stirring in the oil can be relieved, on one hand, mechanical energy loss is reduced, on the other hand, temperature rise caused by the fact that the axle housing is impacted by the oil is reduced, the mechanical efficiency of the electric drive axle is improved, and the service life of the electric drive axle is prolonged.

The invention discloses a fabric wear resistance testing mechanism which comprises a testing machine body, a testing table is arranged above the testing machine body, a fabric is placed in the center of the top of the testing table, and a lifting type spiral pressure testing unit for performing wear resistance testing on the fabric is arranged at the top of the testing machine body; the invention relates to the technical field of fabric performance testing. According to the fabric wear resistance testing mechanism, through arrangement of the lifting type spiral pressure testing unit, circular motion friction of a pressure testing pen on a fabric is achieved, through arrangement of a radius adjusting assembly, the circular motion radius of the pressure testing pen is further controlled, and the fabric is driven to reciprocate left and right in cooperation with a reciprocating driving mechanism; the pressure test pen is arranged on the fabric, so that the pressure test pen performs radius-adjustable spiral motion on the fabric, local friction test on the fabric is avoided, rapid temperature rise of the fabric is effectively prevented, thermal shrinkage and wrinkles of the fabric are avoided, and the wear resistance test accuracy is improved.

The utility model discloses an ice bath and fixing device for an ultrasonic cell disruptor, which comprises a bottom box matched with a cavity of the ultrasonic cell disruptor and a beaker filled with a sample to be disrupted, the outer side of the bottom box is adhered by using an anti-skid adhesive tape, an acrylic bracket for placing the beaker is arranged in the bottom box, and a clamping groove for fixing the beaker is arranged on the lower layer of the bracket. And other gaps between the beakers and the box body are filled with ice-water mixtures. The part, flush with the beaker, of the acrylic frame fixes the beaker on the upper layer through a gripper. According to the device for cell ultrasonication, the beaker is fixed in various forms such as the bracket, the clamping groove and the grasping clamp, so that the beaker does not topple over in an ice bath. Meanwhile, through the arrangement of the transparent acrylic material, the melting condition of the ice-water mixture can be observed, the ice blocks can be replaced in time to prevent the ice-water mixture from being quickly melted, the ultrasonic crushing work of the cells is facilitated, and the cost is low.

The invention discloses a continuous curing process of a tunnel-type push rod heating furnace for curing and curing acetylene bottle filler, comprising a tunnel-type heating furnace body, an acetylene bottle conveying track arranged in the tunnel-type heating furnace body, an automatic opening and closing and locking mechanism of a furnace door at the bottle inlet end and the bottle outlet end of the tunnel-type heating furnace body, a push rod feeding mechanism arranged at the front side of the bottle inlet end of the tunnel-type heating furnace body, the push rod feeding mechanism is used to push the acetylene bottle to be cured and cured on the acetylene bottle conveying track into the tunnel-type heating furnace body, and an automatic cooling spray mechanism for cooling the acetylene bottle after curing and curing is arranged above the rear side of the bottle outlet end of the tunnel-type heating furnace body. The invention has a high qualified rate of finished products, saves manpower, and achieves the purpose of improving economic benefits.

The application relates to a steaming and baking equipment, which comprises a cavity assembly, a first exhaust pipeline and an exhaust structure; an exhaust cavity is formed in the exhaust structure; an exhaust port for the exhaust cavity to communicate with the outside is arranged on the exhaust structure; the exhaust structure is provided with a first air vent communicating with the exhaust cavity; the first exhaust pipeline is communicated with the first air vent and the inside of the cavity assembly respectively; a first valve is arranged in the exhaust cavity; the first valve is used for adjusting the flow of steam entering the exhaust cavity through the first air vent according to the internal air pressure of the cavity assembly; and the first valve is in a normally open state. The first valve in the normally open state is matched with the first air vent, the exhaust amount can be adjusted according to the internal air pressure of the cavity assembly, and the problem that the exhaust hole of the steaming and baking equipment in the prior art cannot change the exhaust amount according to the air pressure in the furnace cavity is solved.

The present invention provides a use of a paramagnetic material in an electric field device, a related electric field device and a method. By using paramagnetic material to prepare any one or both of a first pole and a second pole for generating an electric field, the corresponding electric field device can reduce power consumption during use, thereby reducing the power consumption cost during use and can be more widely promoted. Moreover, since the power consumption is greatly reduced, the purification area can be greatly increased under the same power consumption, so it can be applied to more gas purification occasions; and, while reducing power consumption, it can greatly reduce thermal damage to the electric field device caused by large temperature rise.

The present invention discloses a depilatory device. The depilatory device comprises a depilatory mechanism and a cold compress mechanism. The depilatory mechanism is provided with a first air outlet, a second air outlet and a heat dissipation channel. The cold compress mechanism comprises a cold compress shell assembly, a cold compress module and a heat pipe. The cold compress shell assembly is provided with a cold compress hole, a first heat dissipation hole and a second heat dissipation hole. The cold compress shell assembly is connected to the depilatory mechanism. The cold compress shell assembly and the depilatory mechanism are separated by a first air flow channel at the cold compress hole. The first air outlet, the first heat dissipation hole, the first air flow channel and the second heat dissipation hole are connected in sequence. The heat dissipation channel, the second air outlet and the second heat dissipation hole are connected in sequence. The cold compress shell assembly is connected to the depilatory mechanism. The first air flow channel and the heat dissipation channel are arranged at intervals. The cold compress module is assembled in the cold compress hole and connected to the cold compress shell assembly. The light emitted by the depilatory mechanism is emitted from the cold compress module. One end of the heat pipe is connected to the cold compress module, and the other end extends to between the first heat dissipation hole and the second heat dissipation hole. The depilatory device of the present invention has excellent cold compress effect and heat dissipation effect.

The utility model discloses a heat dissipation plate and a lithium battery heat dissipation pack, the heat dissipation plate comprises a runner plate and a packaging plate welded on the runner plate in a matching manner, the runner plate is provided with a plurality of grooves, the packaging plate covers the upper ends of all the grooves in a matching manner to form a plurality of closed runners, and each runner is filled with a cooling medium. According to the utility model, the heat dissipation plate is arranged to be of a structure formed by welding the runner plate and the packaging plate, and the runner plate is internally provided with the plurality of grooves capable of being filled with the cooling medium, so that a plurality of closed runners can be formed in the heat dissipation plate, and the heat dissipation plate can have excellent heat dissipation efficiency while the use is reduced or the assistance of an external heat dissipation part is not needed; the lithium battery heat dissipation device is simple in structure and wide in application range, during use, a lithium battery is placed between the packaging plates of the two heat dissipation plates in a matched mode, the lithium battery is communicated with an external connecting device through the receding hole grooves, assembly is convenient and fast, the heat dissipation bag can conduct heat dissipation on the internal lithium battery from the upper end and the lower end at the same time, heat dissipation efficiency is high, the temperature rise of the lithium battery is relatively slow, output is stable, and the service life is long.

The application provides a battery cover plate structure, a battery and an electric device, and relates to the technical field of batteries. The battery cover plate structure comprises a pole, a cover plate assembly and an insulation assembly. The cover plate assembly comprises a metal structural piece. The insulation assembly comprises an insulation piece and a conducting piece. The insulation piece is arranged between the pole and the metal structural piece. A local area of the insulation piece is provided with the conducting piece. The conducting piece connects the pole and the metal structural piece, and the conducting piece can be fused. The pole assembly of the embodiment is electrically connected to the metal structural piece through the conducting piece, so that the pole and the metal structural piece are in the same potential, thereby helping to shorten the voltage measurement distance between the positive pole and the negative pole of the battery. When collecting the voltage of the battery with a long distance between the positive pole and the negative pole, the voltage between the pole and the battery cover plate is measured at one of the poles, and the voltage of the battery can be measured, thereby effectively reducing the difficulty of voltage collection.

The invention relates to the technical field of ice makers, and discloses a pre-cooling ice maker during water adding and changing, which comprises a pre-cooling assembly, the pre-cooling assembly is composed of a cold water tank, a pre-cooling tank and an ice filtering plate, the cold water tank and the pre-cooling tank are arranged below the ice filtering plate, the ice filtering plate is downwards inclined, and the pre-cooling tank is arranged below the ice filtering plate. The cold water tank is arranged on the high side close to the horizontal position of the ice filtering plate, a cold water pump is arranged on the outer side of the cold water tank, a pre-cooling tank water outlet is formed in the side, making contact with the cold water tank, of the bottom of the pre-cooling tank, and a condensation pipe penetrates through the middle of the side face of the pre-cooling tank. Cold water ports and warm water ports are horizontally arrayed in the ice filtering plate and correspond to the cold water tank and the pre-cooling tank in position, a closing assembly is arranged between every two adjacent cold water ports, when water flowing on the ice filtering plate is lower than 5 DEG C, the closing assemblies can be opened to enable flowing water to flow into the cold water tank from the cold water ports, and otherwise, the closing assemblies are closed to enable the flowing water to flow into the pre-cooling tank from the cold water ports. And flowing water flows into the pre-cooling box from the warm water port.

The application relates to an intelligent charging system in the field of charging. The system comprises a charging machine and a storage battery; the charging machine comprises a positive and negative pulse module connected with the storage battery, a control module, a temperature control module, a switching power supply module having one end connected with a power supply voltage and the other end connected with the control module and the positive and negative pulse module respectively; the control module is connected with the storage battery through the temperature control module; the temperature control module detects the real-time temperature of the storage battery, and when the real-time temperature of the storage battery is higher than a threshold temperature, a voltage increment value is calculated and fed back to the control module; the control module calculates an adjusted charging voltage based on the voltage increment value, and controls the switching power supply module to output the adjusted charging voltage to the storage battery; the positive and negative pulse module outputs positive and negative pulse voltages to the storage battery; the control module receives pulse signals of the positive and negative pulse module and carries out duty cycle modulation, and then outputs to the switching power supply module. The application is suitable for charging use in different seasons, avoids sulfuration failure of the storage battery, inhibits water loss of the storage battery, and improves the charging performance of the charging machine.

The utility model discloses a calcium carbide furnace outlet cooling device, which relates to the technical field of calcium carbide furnaces and comprises a furnace body, a furnace outlet body is arranged on one side of the furnace body, a furnace tongue is mounted on one side of the furnace body and positioned at the bottom of the furnace outlet body, a mounting frame is mounted on the outer wall of the furnace body, and a bolt is in threaded connection with the inside of the mounting frame. One end of the bolt is in threaded connection with a supporting frame. Compared with the prior art, the cooling device for the furnace outlet of the calcium carbide furnace has the beneficial effects that air can be sucked into the air pipe under the action of the fan through the concave heat dissipation frame arranged on the outer side of the furnace outlet, is guided into the heat dissipation frame after being cooled by the refrigeration sheet and cold water in the cooling box, and then is uniformly blown to the furnace outlet through the plurality of ventilation holes, so that the heat dissipation effect of the furnace outlet of the calcium carbide furnace is improved. The furnace outlet is fully cooled, cooling materials do not need to be manually and frequently replaced, meanwhile, the air pipe is in a zigzag shape, the standing time of the air pipe in cold water is prolonged, and the cooling effect is improved.

The application provides a refrigeration system, a refrigeration device, a control method and a readable storage medium. The refrigeration system comprises a storage chamber, a refrigeration chamber, an evaporator arranged in the refrigeration chamber and used for heat exchange with gas in the refrigeration chamber to refrigerate, a defrosting device arranged in the refrigeration chamber and used for defrosting the evaporator, an air duct, one end of the air duct being communicated with the storage chamber and the other end of the air duct being communicated with the refrigeration chamber, a gas storage chamber communicated with the refrigeration chamber, and a fan arranged in the refrigeration chamber and used for driving gas in the refrigeration chamber to flow to the air duct or the gas storage chamber. Through the technical scheme, the influence of hot gas on the storage chamber is reduced or avoided, and the preservation environment and preservation effect of food materials are ensured.

The invention relates to the technical field of thermal insulation type energy-saving plate preparation, and particularly discloses a fireproof thermal insulation type energy-saving plate which comprises a main body part, and the main body part comprises a thermal insulation layer, a flame-retardant layer and an aluminum foil layer bonded to the flame-retardant layer. The heat insulation layer is prepared from the following raw materials in parts by weight: 80-90 parts of a mixture of polyether polyol and isocyanate and 20-30 parts of diethyltoluenediamine; the flame-retardant layer comprises 75-80 parts of a mixed material of aluminum oxide, calcium phosphate and sodium silicate and 15-25 parts of an adhesive, and the component of the adhesive is an epoxy resin adhesive. The fireproof performance of the heat preservation type energy-saving plate can be improved.

The utility model discloses a relay protection wiring terminal safety protection device, which relates to the technical field of relay protection devices and comprises a control panel, a host box is fixedly mounted on the back surface of the control panel, a plurality of wiring terminals are fixedly mounted on the back surface of the host box, and the host box and the wiring terminals are fixedly mounted on the back surface of the host box. A mounting seat is fixedly mounted at the top of the back surface of the host box, and a protection assembly is movably clamped to the bottom of the mounting seat; according to the utility model, connected cables can be drawn close to the nearest wire leading rod by utilizing the arranged wire leading rod, finally, the cables connected to single wiring terminals are bound by using tools such as a binding tape and the like, the arrangement of the cables is realized, and the protective cover is covered after the cables are connected, so that dust can be prevented from falling on the wiring terminals by utilizing the mounting seat and the protective assembly; the beautiful degree after wiring is effectively improved, and dust can be reduced, so that the service life of the device is prolonged.

The utility model discloses a connector pin, a jack contact element and a connector terminal assembly, the connector pin comprises a first plugging part, a second plugging part and a first connecting part, the second plugging part is connected to the first plugging part, the first connecting part is connected to one end, deviating from the first plugging part, of the second plugging part, and the second plugging part is connected to the jack contact element. The first plugging part and the second plugging part are arranged along the axial direction of the connector pin, and the first plugging part and / or the second plugging part can elastically deform in the radial direction. The jack contact element comprises a first contact part, a second contact part and a second connecting part, the second contact part is connected to one end of the first contact part, the second connecting part is connected to one end, deviating from the first contact part, of the second contact part, and the connector pin is inserted into the jack of the jack contact element; the connector pin is in elastic contact with the second contact part, and the connector pin is in elastic contact with the first contact part.

The utility model discloses a cooling and heat insulation device for a launder laser range finder, and belongs to a cooling and heat insulation device for a laser range finder. Comprising a frame body, a heat shield and a vortex cooler, the frame body is erected above a launder, the heat shield is arranged on the frame body, and a distance measuring hole with a downward opening is formed in the lower end face of the heat shield; a laser range finder is installed on the frame body, located in the heat insulation cover and used for measuring the distance through the distance measuring hole. The vortex cooler is arranged on the heat shield, a cold air outlet of the vortex cooler is led into the heat shield, and a hot air outlet of the vortex cooler is located at the heat shield. The technical problems that a traditional axial flow fan cannot meet the use requirement when reducing the temperature of a laser range finder, and measurement is unstable and invalid due to high temperature of the laser range finder are solved.

The improved grinding cylinder comprises a grinding structure, the grinding structure is installed in a transmission structure, the transmission structure is installed in a magnetic structure, a cooling structure is installed on the peripheral side of the magnetic structure, the bottom end of the magnetic structure is connected with a driving structure, and the magnetic structure is connected with the driving structure. And a lifting structure is mounted on the driving structure. The magnetic stirring and grinding device has the beneficial effects that the grinding structure is arranged on the transmission structure, so that the grinding structure is used for grinding workpieces and driving grinding materials and grinding liquid through the magnetic structure and the driving structure, efficient magnetic stirring and grinding are carried out, and meanwhile, the interior of the magnetic stirring and grinding device has a better cooling function through the arranged cooling structure; the temperature rise caused by grinding friction is reduced, and the convenience of mounting and taking out the grinding structure is improved through the lifting structure.

The invention provides stainless steel, a production method thereof and an electrolytic copper negative plate. The stainless steel comprises the following chemical components in percentage by weight: 0.01%-0.03% of C; si < = 1.0%; mn < = 2.0%; p is less than or equal to 0.045%; s < = 0.002%; 16.50% to 17.50% of Cr (chromium); ni: 10.0% to 10.5%; 2.0% to 2.5% of Mo; n: < = 0.11%; cu: 0.2%-0.7%; 0.1%-0.5% of Co, and the balance Fe and other inevitable impurity elements. The invention further provides a production method of the stainless steel and an electrolytic copper negative plate made of the stainless steel. The current density and the corrosion resistance of the electrolytic copper cathode plate made of the stainless steel are improved, and the electrolytic copper cathode plate has good copper attaching stability, long service life and low production cost.