19results about How to "Guaranteed distribution" patented technology

The utility model relates to a multi-step, multi-taper and large-area inner hole grinding tool which comprises a transition section, a machining section and a clamping section, the machining section is arranged between the transition section and the clamping section, the machining section is a conical surface, and the surface of the machining section is covered with a carborundum layer; according to the multi-step, multi-taper and large-area inner hole grinding tool, structural steel is used as a base material, a carborundum layer is sprayed or sintered on the surface of the base material, and carborundum with high hardness and high abrasion resistance is used for grinding a multi-step, multi-taper and large-area inner hole workpiece. According to the multi-step, multi-taper and large-area inner hole grinding tool, the abrasive resistance, durability and dimensional precision stability of the grinding tool are improved, the manual operation difficulty is reduced, meanwhile, a plurality of chip grooves and cooling grooves are designed in the surface of the grinding tool, it is guaranteed that falling waste is discharged and heat is dissipated when a carborundum layer and a metal surface are ground, and the grinding efficiency is improved. The granularity of the carborundum is determined according to the roughness of the surface of a ground material, the surface roughness requirement is high, and the granularity of the carborundum is finer.

The invention relates to an aluminum alloy soldering lug and a preparation method and application thereof, and belongs to the technical field of welding. The aluminum alloy soldering lug disclosed by the invention is prepared from the following elements in percentage by mass: 3.0 percent to 4.5 percent of Si, 2.0 percent to 3.5 percent of Fe, 0.8 percent to 1.2 percent of Mg, 0.10 percent to 0.25 percent of Zr, 0.05 percent to 0.15 percent of Sc, 0.02 percent to 0.08 percent of Er, 0.05 percent to 0.12 percent of Ti, 0.005 percent to 0.02 percent of B and the balance of Al and other inevitable impurities. The mass ratio of (Zr + Sc) / Fe is 0.08 to 0.15; the mass ratio of Mg to Si is 0.25 to 0.35; the mass ratio of (Fe + Si) to (Zr + Sc + Er) is 20-25; the problems that laser welding aluminum alloy is thick in weld joint structure and uneven in performance, and a dissimilar material welding interface is embrittled are fundamentally solved.

The utility model relates to the field of three-phase asynchronous motors, in particular to an end cover structure of a three-phase asynchronous motor, which comprises an end cover, an end cover sleeve and a fixed seat, the side surface of the end cover is provided with a side heat dissipation opening, the end cover is internally provided with a stabilizing sleeve, the stabilizing sleeve is internally provided with a through hole, the through hole is provided with a rotating shaft, and the upper end of the stabilizing sleeve is provided with a connecting sleeve. The lower end of the connecting sleeve is connected with the rotating shaft, an end cover sleeve is arranged at the upper end of the end cover, a fixed seat is arranged in the end cover sleeve, a connecting plate is arranged on the side face of the fixed seat, a movable sleeve is installed at the lower end of the fixed seat, and the upper end of the transmission shaft rotates in the movable sleeve. A filter screen is arranged in the motor, air circulation inside and outside the motor is enhanced, heat inside the motor is effectively discharged, impurities are prevented from invading, cleaning and safety inside the motor are protected, heat dissipation is further accelerated through the arrangement of a cooling fan, the working temperature of the motor is effectively controlled, and the working efficiency and reliability of the motor are improved.

The invention relates to an air purification fan control system and an air purification fan, and belongs to the technical field of air purifiers, the air purification fan control system comprises an air purifier body, an environment monitoring module and a control module, and the control module is electrically connected with the air purifier body and the environment monitoring module; the environment monitoring module is used for obtaining season data, the control module improves the humidification power of the air purifier body in spring and autumn, and the control module reduces the humidification power of the air purifier body in summer and winter; the environment monitoring module is arranged to obtain the season data, intelligent adjustment of the humidification power is executed in different seasons, and the adjustment accuracy of the humidification effect is improved.

The invention belongs to the technical field of aluminum alloy ingot production, and particularly discloses a rare earth zinc-aluminum alloy ingot intermediate frequency furnace smelting method which comprises the following steps: firstly, independently melting an aluminum ingot by using a furnace A at the melting temperature of 1000-1100 DEG C, then pouring molten aluminum into a furnace B, then adding lanthanum-cerium rare earth and metal silicon into the furnace B, heating the furnace B to 1100-1200 DEG C, keeping the temperature for 2-3 hours, and cooling to room temperature to obtain the rare earth zinc-aluminum alloy ingot intermediate frequency furnace. And after the lanthanum cerium rare earth and the metal silicon are completely melted, zinc ingots are added into the furnace B in batches, the melting temperature is 630-670 DEG C, after the zinc ingots in the furnace B are completely melted, furnace shutdown refining is carried out, after refining is completed, slag fishing and sampling are carried out, and finally discharging and casting are carried out. The problems that in the melting process of an intermediate frequency furnace, production efficiency is low, and production cost is increased are solved. By adopting the A furnace and B furnace smelting process, the daily production efficiency of rare earth zinc-aluminum alloy ingot products is improved, and production pauses caused by waiting for molten aluminum melting or molten zinc vaporization and the like are reduced.

The invention discloses a method for regenerating and charring a catalyst of a propane dehydrogenation device. The method comprises the following steps: a spent catalyst after a propane dehydrogenation reaction enters a regenerator by virtue of gravity for catalyst charring, wherein the regenerator is divided into an upper charring area, a lower charring area, a cooling area, an oxychlorination area and a gas stripping area. A spent catalyst is respectively contacted with two strands of regeneration recycle gas with different oxygen contents in an upper scorching area and a lower scorching area of the regenerator for scorching, the scorched catalyst sequentially passes through a cooling area, an oxychlorination area and a gas stripping area under the action of gravity flow to complete the scorching regeneration process of the spent catalyst, and the regenerated catalyst is recycled. The charred and cooled regeneration gas in the upper charring area, the lower charring area and the cooling area is sent to a regeneration fan for pressurization, outlet gas of the regeneration fan is divided into three paths, two paths are respectively supplemented with air and enter a regenerator for catalyst regeneration charring after being heated, and the third path of regeneration gas enters the cooling area. The method can effectively ensure the burning effect of the catalyst and prolong the service life of the catalyst.

This utility model relates to the technical field of sweeper reducers, specifically a protective housing for a sweeper reducer, including a reducer body, a motor body, a mounting base, and a protective device. The motor body is mounted on the reducer body and is used to drive the reducer body. The mounting base is fixed on the surface of the reducer body, and the protective device is disposed on the surface of the mounting base. The protective device includes an iron cover, which is located above the reducer body. This utility model, by setting up the protective device, forms a closed protective space through the iron cover, a sliding iron cover, and a magnetic cover plate. The positioning part can position the iron cover, which can shield and protect the reducer body and the motor body. It can reduce the direct impact on the surface of the reducer body and the motor body caused by accidental contact during operation and bumps during tool handling, and reduce damage such as scratches on the housing and deformation of components caused by external impacts, thereby protecting the integrity of the equipment's appearance and the stability of its internal structure.

The utility model discloses a computer hard disk shockproof device, including bottom frame and apron, and the rotation is connected through connecting shaft between both, be provided with antiskid block on the bottom frame, be provided with a plurality of openings on the apron, be provided with pressing block in the opening, one side of apron is provided with the connecting frame, one side of pressing block passes through the opening and is connected on the connecting frame, the one side swing joint of connecting frame has the knob, be connected with the connecting column on the apron, be provided with the connecting port on the connecting frame. The utility model discloses by adopting apron and bottom frame between box cover formula to install hard disk, and the protection effect of hard disk is greatly achieved, and whole shockproof device sets up a plurality of heat dissipation net, guarantees the heat in the hard disk working process can be dissipated, plus through the extrusion clamping between pressing block and antiskid block, can guarantee the hard disk stable in the operation process, adopt the adjustable mode of knob and connecting column, increase the application scope of whole protection device.

The present invention relates to the technical field of microbiological analysis, and discloses a single cell distributor, which comprises a platform, a three-axis motion mechanical arm arranged on the platform, and a control system arranged in the platform, the three-axis motion mechanical arm is arranged on one side of the platform, and the other side of the platform is provided with a mounting seat for placing a pore plate, one end or two ends of the mounting seat are provided with placing stations for placing liquid storage bottles, the three-axis movement mechanical arm is connected with a distribution assembly, the distribution pressure of the distribution assembly is less than or equal to 0.1 psi, the distribution assembly comprises a seat body, and the lower end of the seat body is provided with a sensor suction head and a spray head; a pressure sensor and a Coulter counter which are communicated with the sensor suction head and the spray head are arranged in the base body, and the pressure sensor, the Coulter counter and the three-axis movement mechanical arm are all electrically connected with the control system. According to the method, rapid, efficient and low-cost single cell high-throughput analysis and separation can be realized, meanwhile, the simplicity and convenience of operation and high survival rate of cells are ensured, and the data processing and analysis capability is expanded.

This invention relates to the field of power cable technology and discloses a cross-linked polyethylene insulated overhead cable with rapidly cross-linked silane and its preparation method, comprising: a conductor located at the center of the cable; a conductor shielding layer extruded on the outside of the conductor; an insulation layer extruded on the outside of the conductor shielding layer; an insulation shielding layer extruded on the outside of the insulation layer; a metal shielding layer disposed on the outside of the insulation shielding layer; and an outer sheath of the cable disposed on the outside of the metal shielding layer. A heat storage component located at an area prone to overheating is disposed on the outside of the outer sheath of the cable. The heat storage component allows heat to be transferred to the cable joint or local circuit when overheating occurs due to overload, increased contact resistance, etc. Once the temperature reaches the set melting point of the phase change material, the phase change material will undergo a phase change and absorb a large amount of latent heat, thus stabilizing the temperature of the overheated area near the phase change point, forming a thermal buffer, and preventing uncontrolled temperature rise and heat spread within a certain range.

The utility model discloses a bent tube, an insertion part and an endoscope, and relates to the technical field of medical instruments. The bent tube disclosed by the utility model is used for an endoscope. The bent pipe comprises a plurality of pipe joint units arranged in the axial direction of the bent pipe, and the pipe joint units are rotationally connected so that the bending action of the bent pipe can be achieved. The bent pipe is provided with a guide channel arranged on the side wall of the bent pipe, and the guide channel is used for guiding a pulling rope to penetrate. The bent pipe is provided with a first positioning part arranged at the far end of the bent pipe, the first positioning part is located on the extending path of the guiding channel, and the first positioning part is used for pre-positioning the pulling rope when the pulling rope is straightened on one side of the far end of the bent pipe, so that the far end part of the pulling rope is distributed along the extending path of the guiding channel. The scheme at least can be used for solving the problem that the connection reliability of the far end of the traction rope and the bent pipe is insufficient.

The application provides a motor heat dissipation device, which comprises a radiator, a stator core, a plurality of stator windings and a plurality of heat pipes; the radiator is provided with an inner ring, an outer ring and a heat dissipation part, and the inner ring is connected with the stator core; the heat dissipation part is provided with a plurality of heat dissipation holes, which reduces the overall weight of the radiator, increases the contact area with air and accelerates the dissipation of heat conducted by the heat pipes; positioning holes are arranged between adjacent heat dissipation holes, which not only provide mounting support for the heat pipes and ensure the thermal contact between the heat conduction end and the heat dissipation part, but also take into account the positioning and heat dissipation; meanwhile, the motor heat dissipation device integrates the radiator and the plurality of heat pipes, the heat pipes have extremely high thermal conductivity, the heat absorption end of the heat pipe is arranged in the gap region between adjacent two stator windings, the heat generated by the stator windings is conducted into the positioning holes of the heat dissipation part, and then is dissipated outward through the radiator, thereby avoiding the natural heat dissipation of the surface of the radiator only, and improving the heat dissipation effect of the motor heat dissipation device.

The utility model relates to the technical field of medical instruments, in particular to a nose cold compress device which comprises a first backing layer, a second backing layer and dressing, the second backing layer is arranged between the first backing layer and the dressing, a plurality of cracks are formed in the surface of the dressing, the cracks are communicated with one another, the dressing is divided into a plurality of dressing units by the cracks, and the dressing units are connected with the first backing layer and the second backing layer. A plurality of ventilation grooves are formed in the surface of the second backing, the ventilation grooves are communicated with one another, and the ventilation grooves are communicated with the cracks and divide the second backing into a plurality of backing units. According to the cold compress patch, air can circulate through the cracks between every two adjacent dressing units, wrapping of the dressing on the nose is not affected by the cracks, the multiple ventilation grooves are formed in the back lining units, it is guaranteed that moisture can be emitted outwards from the first back lining layer through the cracks and the ventilation grooves, metabolism of the skin is not affected, and the comfort level of the cold compress patch in the using process is improved.

The application discloses a kind of carbon four alkylation raw material pretreatment catalyst and preparation method and pretreatment method, belong to carbon four light hydrocarbon processing technical field.Its technical scheme is: carbon four alkylation raw material first enters extraction column and is extracted, water-washed carbon four alkylation raw material is extracted from top and enters catalytic rectification column, catalytic rectification column is divided into rectification section, reaction section and stripping section from top to bottom, catalyst of the application is placed in reaction section;Carbon four alkylation raw material enters reaction section, butadiene therein and hydrogen gas occur reaction, and 2-butene generated in the reaction process is removed constantly;Catalytic rectification column bottom is extracted and pretreated carbon four alkylation raw material.The pretreatment method of the application carries out corresponding desulfurization, denitrogenation, deoxidant and diene hydrocarbon etc.pretreatment before carbon four alkylation raw material enters alkylation device, meets the requirement of alkylation feed to raw material impurity, improves alkylation oil quality, reduces the material loss of alkylation process.

The invention relates to the technical field of concentration and crystallization devices, and discloses an itaconic acid concentration and crystallization device which comprises a tank body, a cover is arranged at the top of the tank body, a discharge pipe is arranged at the bottom of the tank body, an eccentric stirring mechanism is arranged on the tank body, and a reverse stirring mechanism is arranged on the inner wall of the tank body. According to the itaconic acid concentration and crystallization device, an eccentric stirring mechanism is arranged, so that a first rotating plate, a second rotating plate and a connecting block reciprocate while rotating in the stirring process, efficient mixing and homogenization of liquid are achieved, the laminar flow state of the liquid can be broken through reciprocating motion, flowing of the liquid with different temperatures and concentrations is enhanced, and the crystallization efficiency is improved. According to the present invention, the uniform precipitation of the crystal is promoted, the local supersaturation or insufficient saturation phenomenon is avoided, and in addition, the movement can improve the heat exchange efficiency and ensure the uniform distribution of the temperature during the crystallization process so as to optimize the product quality, improve the crystallization efficiency, and integrally improve the working performance and the production efficiency of the equipment.

The invention relates to the technical field of preserved meat processing, and discloses preserved meat processing equipment which comprises a smoking box, a smoking furnace is fixedly connected to the bottom of the smoking box, six smoking pipes are arranged on the top of the smoking furnace in a communicating mode, and a box door is hinged to the front face of the smoking box; through intermittent rotation of a second rotating rod, preserved meat on a hook at the bottom of the second rotating rod can be driven to intermittently rotate, the preserved meat can better absorb flavor components in smoke or seasonings in the static stage through intermittent rotation of the preserved meat, the smoke or the seasonings have more time to make contact with the surface of the preserved meat in the static stage, the smoke or the seasonings slowly permeate into the preserved meat, and the taste of the preserved meat is improved. The preserved meat can move under the action of the elastic rod, and when the preserved meat moves in the rotating process, the preserved meat can be in full contact with smoke gas, so that the whole preserved meat can be uniformly dyed with a smoked color, flavor substances generated in the smoking process can be fully absorbed, and the flavor and color of each part are relatively consistent.

The utility model discloses a high-voltage vacuum circuit breaker with a waterproof structure, which comprises a base, the top of the base is fixedly connected with a vacuum circuit breaker, the outer side of the base is fixedly connected with an intelligent control device, an installation box is arranged above the vacuum circuit breaker, and four supporting columns are fixedly connected inside the installation box. A transmission rod is driven by a motor to rotate, so that a driving bevel gear is driven to rotate, a third rotating rod is further driven to rotate, a third bevel gear is further driven to rotate, a first bevel gear is further driven to rotate, a first rotating rod is further driven to rotate, a first gear is further driven to rotate, and a second gear is further driven to rotate; the rainproof cloth is arranged on the vacuum circuit breaker, so that the rainproof cloth can descend, the vacuum circuit breaker is sheltered by the rainproof cloth, rainwater cannot be sprayed on the vacuum circuit breaker, the operation safety of the vacuum circuit breaker is guaranteed, the rainproof cloth can be retracted, and the heat dissipation capability of the vacuum circuit breaker can be guaranteed when it does not rain.

The present application relates to a kind of mechanical hand wheel switching lubricating structure, including switching box, partition, top rod, drive assembly, lubricating component, oil supplementing component, heat dissipation component, partition is vertically arranged in the inside of switching box, the inside space of switching box is divided into switching cavity and drive cavity, hand wheel drive mechanism is connected in switching cavity by two bearings, drive assembly is installed in drive cavity, lubricating component is installed in the top of switching box, bottom end extends to the inside of switching cavity, oil supplementing component is installed in the top of switching box, two ends are respectively connected with switching cavity and lubricating component, heat dissipation component is installed in the top of switching box, and is connected with drive cavity, drive assembly is connected hand wheel drive mechanism by top rod and spline structure, hand wheel drive mechanism is connected lubricating component by second limit ring.The present application can realize the lubrication of part during each process from electric switching to manual, can realize the supplement of lubricating oil to lubricating component during each process from manual switching to electric, it is very convenient.

The invention discloses a hot air furnace for circulating heating with uniform temperature, comprising a furnace body, the bottom of which is connected to an air supply box, and further comprising: a pretreatment component, the pretreatment component is fixedly connected to the outer surface of the furnace body, and the side of the pretreatment component close to the furnace body is connected to a circulation pipe; a temperature control component, the temperature control component is fixedly connected to the top of the furnace body cavity, and the inner surface of the furnace body is connected to an auxiliary component. The invention relates to the technical field of hot air furnaces. The hot air furnace for circulating heating with uniform temperature is convenient for heat to be evenly distributed inside the furnace body, thereby avoiding uneven temperature inside the furnace body. The circulation pipe is close to the air supply box inside the furnace body, so that the circulation pipe can circulate the hot air heated by the pretreatment component, which is convenient for the circulation pipe to evenly transfer heat. The heat generated by the temperature control component flows from top to bottom into the furnace body for heating treatment, so that the heat circulated by the temperature control component can contact the hot air discharged by the circulation pipe.