98results about How to "Maintain performance" patented technology

The invention discloses a carbon ceramic composite conductive microsphere, a ceramic resistor and a preparation method, and belongs to the technical field of production of special materials of electrical equipment, and the method comprises the following steps: sequentially dipping porous mullite in a precursor solution of carbon and slurry containing carbon black, and carrying out drying treatment and carbon burying sintering to obtain the carbon ceramic composite conductive microsphere; the preparation method comprises the following steps: preparing a ceramic raw material, performing vacuum-assisted centrifugal impregnation on the ceramic raw material and slurry consisting of a binder in pug consisting of the ceramic raw material and a surfactant, sequentially performing drying and glue discharging treatment, primary isostatic pressing forming and air pressure sintering, cooling to room temperature, and performing mechanical treatment and electrode spraying to obtain the ceramic resistor. Impregnation improves the dispersibility and uniformity of the carbon material in the porous mullite to form a continuous conductive path, the carbon black-containing slurry improves the conductivity of the ceramic resistor, carbon-buried sintering generates in-situ carbon with abundant types, the combination of carbon and a ceramic interface is promoted, and the oxidation resistance, mechanical properties and electrical properties of the ceramic resistor are improved.

The chip removal machine comprises a chip removal machine body, the chip removal machine body is provided with a containing cavity, an inlet end and an outlet end, the inlet end and the outlet end communicate with the containing cavity, the inlet end is used for communicating with a chip removal opening of the numerical control machine tool so that the cooling liquid can flow in, and the outlet end is used for discharging the metal chips; the conveying component is arranged in the containing cavity and located between the inlet end and the outlet end so as to convey the metal cuttings. The containing box communicates with the containing cavity so that the cutting fluid in the containing cavity can flow into the containing box. And the bubble generator comprises a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe communicates with the containing box, the liquid outlet pipe communicates with the containing cavity, and the bubble generator is used for injecting gas into the cutting fluid flowing into the bubble generator to generate the cutting fluid with bubbles and injecting the cutting fluid with the bubbles into the containing cavity. Through the innovative bubble cleaning technology and the reasonable structural design, the problem that in the prior art, the chip removal effect of a chip removal machine is poor is effectively solved.

The invention provides a modified silicone oil agent with a comb-shaped structure as well as a preparation method and application thereof, the oil agent comprises an amino modified silicone oil emulsion and an epoxy modified silicone oil emulsion, and the mass ratio of the amino modified silicone oil emulsion to the epoxy modified silicone oil emulsion is 1: (0.5-1.5); the amino modified silicone oil emulsion and the epoxy group-containing modified silicone oil emulsion have comb-shaped structures, main chains of the amino modified silicone oil and the epoxy group-containing modified silicone oil are acrylate polymers, and branch chains are amino short silane chains or epoxy group-containing short silane chains; the preparation method of the oiling agent comprises the following steps: respectively preparing amino short-chain silicone oil and epoxy group-containing short-chain silicone oil, and then respectively synthesizing amino modified silicone oil emulsion and epoxy group-containing modified silicone oil emulsion. The acrylate polymer is introduced, the content of organic silicon is reduced, the viscosity of the oiling agent is small, carbon fibers are conveniently oiled, a protective film is formed on the fibers, friction and abrasion between the fibers are prevented, and therefore the surface defects of the carbon fibers are reduced.

The invention relates to rehabilitation equipment capable of intelligently simulating swallowing actions, and belongs to the technical field of medical instruments. Comprising a main body frame which is fixed on the head of a patient through a cranial top limiting claw sleeve, a cranial side face clamping piece and a side face clamping plate. An oral cavity upper and lower jaw occlusion training module, a tongue stretching and curling guide training module and a throat action simulation sub-module are arranged to cooperatively simulate the whole swallowing process. And the central processing unit is provided with various sensors, such as surface myoelectricity, pressure, flow and acceleration sensors, acquires multi-dimensional data and transmits the multi-dimensional data to the central control board. The central processing unit analyzes data in combination with a database so as to regulate and control action parameters of all the modules, and personalized rehabilitation training is achieved. The man-machine interaction module provides operation and feedback, and the data storage and transmission module guarantees data management and sharing. The equipment can be accurately simulated and intelligently regulated and controlled, and the swallowing rehabilitation effect and the life quality of a patient are effectively improved.

The invention discloses a distillation purification method for preparing a silane coupling agent, and belongs to the technical field of preparation of silane coupling agents. The distillation and purification method for preparing the silane coupling agent comprises the following steps: step 1, mixing a silane coupling agent crude product, tetrahydrofuran, an organic antioxidant and an auxiliary agent, heating, mixing and stirring to obtain a mixture; 2, adding the mixture into a distillation tower, heating and distilling, controlling the heating temperature and the distillation rate, and ensuring stable and continuous evaporation and condensation of the silane coupling agent; and 3, collecting the condensed liquid into a collector, separating the liquid, filtering, and drying to obtain the silane coupling agent. According to the method, the product purity and yield of the silane coupling agent can be effectively improved.

The invention discloses a new energy ship pipeline fixing support and a fixing method thereof, and relates to the technical field of pipeline fixing.The new energy ship pipeline fixing support comprises a U-shaped transverse plate, a plurality of translation plates are arranged in an opening of the U-shaped transverse plate, an arc-shaped supporting plate is arranged above the translation plates, and a pair of arc-shaped clamping grooves are formed in the two sides of the bottom face of the arc-shaped supporting plate; a pair of arc-shaped sliding plates are clamped in the pair of arc-shaped clamping grooves in a sliding mode, an arc-shaped clamping plate is fixedly arranged at the top end of each arc-shaped sliding plate, and the arc-shaped supporting plate and the pair of arc-shaped clamping plates form an annular clamping cavity; and a pipeline is placed above the U-shaped transverse plate and is inserted into the annular clamping cavities in a penetrating manner. By means of the annular clamping cavity, the pipeline can be evenly stressed in all radial directions in the circumferential direction, and three-dimensional stress balance is achieved; the distance between the translation plates is adjusted according to the length of the pipeline, the clamping force can be evenly distributed in the length direction of the pipeline, and the translation plates and the clamping force jointly ensure that the pipeline can be stably clamped in all directions.

The invention provides secondary modified silica sol and a preparation method and application thereof.The secondary modified silica sol is prepared from silica sol, a primary modified component, a secondary modified component and water, the primary modified component comprises mPEG5K-silane and poloxamer 188, and the secondary modified component comprises waterborne acrylic emulsion and span 80; the specific raw materials are adopted to carry out secondary modification on the silica sol, so that the obtained secondary modified silica sol is large in viscosity and high in adhesion, the casting back layer slurry containing the secondary modified silica sol is high in wet strength, the collapsibility of an investment casting back layer is improved, the residual strength of a shell is reduced, the quick-drying effect is strong, and the service life of the casting back layer slurry is prolonged. And in the subsequent sand cleaning process, the shell can be vibrated quickly, the residual sand powder is extremely little, the quality and performance of the material are effectively kept, the surface quality of the casting is good, the production efficiency is greatly improved, and the manufacturing cost is saved.

The invention relates to the technical field of battery energy storage systems, in particular to a battery energy storage system operation reliability evaluation method and device based on data driving, and the method comprises the steps: obtaining the junction temperature fluctuation information and cycle index of a target energy storage converter, so as to calculate the total fault probability and wear fault probability of components, constructing a converter reliability evaluation model; obtaining energy storage sample data of the target battery module and voltages and temperature measurement points of all single batteries to calculate a safety early warning probability and a consistency safety early warning probability based on a data reconstruction error, and further constructing a battery energy storage safety early warning model; and establishing an operation reliability evaluation model according to the converter reliability evaluation model and the battery energy storage safety early warning model. Therefore, the problem that the reliability of the battery energy storage system is difficult to accurately evaluate because the PCS operation cycle index, the battery monitoring data and the state imbalance are not considered in the existing battery energy storage system operation reliability evaluation is solved.

The invention relates to an adhesion modified ionic conductive hydrogel for temperature and humidity sensing, a preparation method thereof and a storage device. The invention discloses adhesion-modified composite cross-linking ionic conductive hydrogel and a preparation method thereof, and relates to the technical field of polymer composite materials. The preparation method comprises the following steps: carrying out in-situ polymerization on polyvinyl alcohol, acrylamide, acrylic acid, cellulose, lithium chloride, a covalent cross-linking agent and an initiator at 50-60 DEG C by a one-pot method for 4-6 hours to obtain a precursor; carrying out low-temperature freeze-thaw cycle at-20 DEG C or below for 2-4 times; and carrying out polyol solvent exchange twice to obtain the polymer. Through in-situ polymerization covalent cross-linking and cellulose grafting, reversible physical cross-linking and secondary solvent exchange steps, the adhesive property of the hydrogel and the durability of the hydrogel in a low-temperature and natural dry environment can be improved on the basis of improving the mechanical property of the hydrogel, and the hydrogel can be used for assembling flexible stress-strain, temperature and humidity sensors and has wide application prospects. The invention also provides an adhesion modified ion conductive hydrogel storage device used for temperature and humidity sensing.

A paper packing belt comprises a long-strip-shaped paper roll, the long-strip-shaped paper roll comprises a plurality of packing strips, the packing strips are bonded and fixed together side by side through environment-friendly glue, the cross section of each packing strip is flat, and each packing strip is composed of a composite layer and comprises a base material layer located in the middle and abrasion-resistant layers located on the two sides of the base material layer. The paper packing belt designed by the utility model is excellent in environmental protection property, mechanical strength, wear resistance, waterproof performance and the like, not only meets the high-standard requirements of modern logistics and packing industries on packing materials, but also provides a new thought and direction for research, development and application of environment-friendly packing materials. The wide application of the plastic can powerfully promote the development of the environmental protection industry, reduces plastic pollution, and contributes to the construction of a green and sustainable society.

The utility model relates to the technical field of rubber sealing ring production, and discloses a shaping device for rubber sealing ring production, which comprises a processing table, and a water storage tank is arranged at the top of the processing table; the supporting rod is arranged at the top of the machining table; and the top cover is arranged at the top of the supporting rod. The hydraulic cylinder is started, the hydraulic cylinder operates to drive the heating plate and the upper die block to move, when the upper die block is matched with the lower die block, the heating plate is started to heat the upper die block, so that a gap of a die is tightly filled with a rubber material, after the rubber material forms a required shape, the upper die block and the heating plate are recycled, and the water pump is started again. The water pump operates to suck water in the water storage tank through the water suction pipe, then the water is conveyed into the splitter plate through the water conveying pipe, and the water is sprayed out through the spray head to cool a rubber material, so that the effect of rapidly cooling the rubber sealing ring to maintain the shape and performance of the rubber sealing ring is achieved.

The invention discloses alkaline stripping liquid for a silicon-based surface composite film and a stripping method of the alkaline stripping liquid. The alkaline stripping liquid is prepared from the following raw materials in percentage by mass: 12 to 17 percent of alkaline substance, 0.08 to 0.15 percent of oxidizing agent, 0.02 to 0.1 percent of composite complexing agent, 0.01 to 0.05 percent of interfacial agent and the balance of water, wherein the composite complexing agent is composed of an aluminum complexing agent and a molybdenum complexing agent according to the mass ratio of 1: 1. The method has the advantages of being good in stripping effect, small in silicon substrate damage, free of residues, high in universality, easy and convenient to operate and the like, and can be widely applied to the field of electronic chemicals, the technical field of semiconductors and the technical field of film stripping.

An antenna system mounted on a vehicle according to an embodiment is provided. The antenna system comprises: a PCB on which electronic components are disposed; at least one radiator which is electrically connected to the PCB and is formed in a metal pattern having a predetermined length and width so as to transmit and receive signals; a bottom cover which is disposed below the PCB and consists of a metal plate having a slot area formed in an area corresponding to an area on which an antenna element is disposed; and a top cover which is coupled to the bottom cover and is configured to accommodate the PCB therein, wherein broadband operation is possible by means of the radiator and the metal plate having the slot area.

The present invention is a fragrance composition containing, (A) a fragrance compound, and (B) a compound represented by the following formula 1, wherein R1 and R2 each represent a hydrocarbon group, R1 and R2 having 17 or more carbons in total, A1O and A2O each represent an alkyleneoxy group with 2 or more and 4 or less carbons, with A1 and A2 being alkylene groups, x1 and x2 represent average numbers of added moles of A1O and A2O, respectively, and each represent a number of 0 or more and 10 or less, and M is a cation.

The utility model discloses a reusable corrugated paper disc brake disc protective sleeve, which relates to the technical field of bicycle protection and comprises a corrugated paper board, limiting grooves are arranged on two sides of the corrugated paper board, auxiliary boards are rotatably connected to two sides of the corrugated paper board, limiting paper boards are fixedly mounted on the inner sides of the auxiliary boards, and the limiting paper boards are fixedly mounted on the inner sides of the limiting paper boards. And the limiting paper board is slidably connected to the inner side of the limiting groove, and a buffering piece is fixedly installed in the middle of one side of the corrugated paper board. By the adoption of the structure, the brake disc can be easily sleeved and covered through the corrugated paper board and the limiting grooves in the auxiliary board, rapid disassembly and assembly and repeated use are achieved, the corrugated paper is derived from renewable resources, environmentally friendly and easy to degrade, compared with plastic, the burden on the environment is smaller, meanwhile, the price is more economical, the production cost can be reduced, and the brake disc can be conveniently disassembled and assembled. And the corrugated paper also has excellent buffering performance, so that the brake disc can be effectively protected from being damaged, and the integrity of a product is ensured.

The utility model provides a heat insulation assembly, a battery and a power utilization device. The heat insulation assembly comprises a heat insulation main body, a bonding layer and a separation layer, the heat insulation body is provided with connecting faces and side wall faces, the connecting faces are arranged in pairs and distributed at intervals in the first direction, and the side wall faces are connected between the connecting faces arranged in pairs. The bonding layer is arranged on the connecting surface and is connected with the heat insulation main body; the separating layer covers the side, away from the heat insulation body, of the bonding layer. Wherein the heat insulation main body is provided with a notch, the notch is formed by sinking the side wall face into the heat insulation main body, and the orthographic projection of the separation layer in the first direction covers the notch. According to the heat insulation assembly provided by the embodiment of the invention, the separation layer can be stripped conveniently.

The utility model relates to the technical field of gear reduction, in particular to an efficient energy-saving gear reducer device which comprises a device shell, an input end is arranged on one side of the device shell, and an output end is arranged on the other side of the device shell. A moving assembly is arranged at the top end of the device shell. Fixing assemblies are arranged on the two sides of the device shell correspondingly. Through cooperative use of the circular cover, the fixed circular ring, the disc, the sliding block and the preformed hole, the purpose of adding lubricating oil without overall disassembly can be achieved, the time for shutdown and machine disassembly is shortened, the maintenance time and the labor cost are effectively saved, the operation safety is improved, and the working efficiency is improved. Meanwhile, the situation that dust enters lubricating oil and the interior of the device shell is reduced, oil pollution and deterioration can be prevented, the good performance and stability of the lubricating oil are kept, the equipment failure and maintenance requirements are reduced, and therefore the maintenance cost and the maintenance frequency are reduced.

The utility model discloses a photosensitive color-changing sun-proof aramid fiber fabric which comprises a wind-up roller, a rotating handle, a pressing block and a fabric main body, the fabric main body is sleeved outside the wind-up roller, a base layer is arranged in the middle of the interior of the fabric main body, a wear-resistant layer is arranged outside the base layer, and a corrosion-resistant layer is arranged on one side of the wear-resistant layer. The wear-resistant layer, the corrosion-resistant layer and the photosensitive layer are arranged in the aramid fabric, the overall strength of the aramid fabric can be improved through the wear-resistant layer and the corrosion-resistant layer, the use stability of the aramid fabric is guaranteed, meanwhile, the color of a photosensitive compound in the photosensitive layer can be changed in real time according to the intensity of ultraviolet rays, and the service life of the aramid fabric is prolonged. The aramid fiber has excellent heat resistance and flame retardance, so that ultraviolet rays can be effectively blocked, and the performance and the strength of the material can be kept in a high-temperature environment.

The utility model relates to the field of smoking equipment, and discloses firewood smoking equipment for sausage processing, which comprises a base box body, foot cups which are uniformly distributed are fixedly connected to four corners of the bottom of the base box body, trundles are rotatably connected to the bottom of the base box body, a smoking chamber is fixedly connected to the top of the base box body, and the smoking chamber is fixedly connected to the bottom of the base box body. A smoking frame is fixedly connected to the inner wall of the smoking chamber, a smoking chamber door is fixedly connected to the smoking chamber through a hinge, a touch screen is fixedly connected to the left side of the smoking chamber, a smoke circulating device is arranged at the rear position of the left side of the base box body, and a combustion chamber is arranged at the right side position of the base box body. According to the utility model, the firewood combustion chamber and the temperature sensor are adopted, and the operation touch screen and the mechanical button are combined, so that the smoking temperature is effectively controlled, the accurate adjustment of the temperature is ensured, the problem of non-uniform or excessive smoking can be prevented, the cleaning spray head is arranged at the top of the smoking chamber, and clean water in the water tank is used for efficiently cleaning the smoking chamber.

The present invention proposes a vehicle queue control and resilience assessment method based on a zero-trust architecture, which is used to accurately estimate the system state of a nonlinear network related to a vehicle queue, provide a reasonable control measurement sharing mechanism, and evaluate the ability to resist network attacks and quickly recover; the method is mainly divided into three parts: state estimation, two-layer controller design, and vehicle queue resilience assessment, specifically including: building a nonlinear network system for a vehicle queue; estimating the system state based on an extended Kalman filter; designing a two-layer controller based on state deviation and introducing node trust values ​​to achieve control of the vehicle queue; and evaluating the resilience of the vehicle queue based on node trust values; the method proposed in the present invention has the advantages of high flexibility and robustness of the two-layer controller; strong adaptability of the system state estimation; and a comprehensive system resilience assessment framework with high practical applicability, which can be applied to actual road driving conditions.

The utility model relates to a multifunctional heating plate, which comprises a furnace body, an electromagnetic generating device, a heating device and a controller, the electromagnetic generating device and the heating device are respectively arranged in an inner cavity of the furnace body, and the controller is respectively and electrically connected with the electromagnetic generating device and the heating device. The controller controls the electromagnetic generating device to generate a changing magnetic field or controls the heating device to be electrified to generate heat. And the induction cooker and the electric ceramic cooker are combined into one heating device, so that the space occupied by kitchen equipment is obviously reduced. The method is particularly beneficial to household kitchens or commercial kitchens with limited space, so that the kitchen layout is simpler and more efficient.

The invention relates to the field of electrochemical ammonia synthesis, in particular to a lithium-mediated ammonia synthesis method and an electrolyte used in the method. The invention discloses a preparation method of a lithium titanium oxide electrolyte deposited with a noble metal film, which comprises the following steps: mixing lithium carbonate and ammonium titanate for solid-phase reaction, placing the obtained lithium titanium oxide (LiTiO2) as a substrate on a sample table of a vacuum cavity of PVD (Physical Vapor Deposition) equipment, starting a vacuum pump and a sputtering source, and depositing the noble metal film. The invention also discloses a lithium-mediated conductive chemical synthesis method for ammonia, which utilizes the lithium titanium oxide electrolyte deposited with the noble metal film. And water is used as a hydrogen source, so that the safety and the stability of the system are improved.

This application relates to the field of electronic component cleaning technology, specifically disclosing an electronic component cleaning device with batch processing capability. The device includes a drying chamber with an open front end for the adsorption assembly to enter and exit. The top of the drying chamber has several ventilation holes to allow effective evaporation of cleaning agent vapor. An air outlet is located on the left side of the drying chamber, connected to a blower via a pipe. The blower removes dust and excess cleaning agent from the electronic components. Two sliding rails are located on the bottom of the drying chamber, slidably connecting to an electric telescopic frame. An adsorption assembly is fixedly connected above the electric telescopic frame. A vacuum assembly is fixedly connected to the front end of the adsorption assembly for vacuum adsorption of the components, and a low-temperature heating assembly is fixedly connected to the rear end of the adsorption assembly for rapid evaporation of the cleaning agent. Sliding grooves are located on the left and right sides of the adsorption assembly, slidably connecting to cleaning components for cleaning them. This invention has the function of cleaning and timely drying electronic components in batches.

The invention discloses an inspection, storage and distribution management and control device for instruments and meters, which comprises a management and control table, four groups of storage frames are arranged on the management and control table, each group of storage frames comprises an upper-layer storage frame and a lower-layer storage frame, and clamping plates are arranged on the two sides of the inner part of each of the upper-layer storage frame and the lower-layer storage frame; the upper-layer storage frame and the lower-layer storage frame are each provided with a back plate located between the two clamping plates. A delivery table; a first delivery table; a detection assembly; a second delivery table; the switching assembly comprises an arc-shaped channel, connecting ports are formed in the positions, corresponding to the arc-shaped channel, of the first sending-out table and the second sending-out table correspondingly, and a shifting plate is slidably connected into the arc-shaped channel; a first monitoring lens; and a second monitoring lens. According to the inspection, storage and distribution management and control device for the instruments and apparatuses, disorder in the detection and transportation processes of the instruments and apparatuses can be greatly avoided, and the operation stability degree is improved; the structure is reasonable, and cost control is facilitated.

The utility model relates to the technical field of hub reduction gears, in particular to a hub reduction gear which comprises a base, the bottom of the base is connected with the inner bottom wall of an outer gear piece in a clamped mode, the outer wall of the outer gear piece is connected with the outer wall of a transmission piece in a meshed mode, and after a sun gear is connected to the outer wall of an output shaft, the output shaft drives the sun gear to start to rotate. Due to the rotation of the sun gear, the planet gears meshed with the sun gear start to revolve around the sun gear, and meanwhile, the planet gears are in meshed connection with the gear ring, so that the planet gears can revolve and rotate stably under the support of the tapered roller bearings, and sliding friction is replaced by rolling friction of the tapered roller bearings; by means of the planetary gear, energy loss and heat generation can be remarkably reduced, the planetary gear can transmit large torque at a small rotating speed, power is finally transmitted to external equipment through the output shaft in the sun gear through transmission and conversion of the planetary gear, linear output is achieved, efficient power transmission is achieved, and the energy loss is reduced.

The utility model discloses a kind of heat processing device for recycling PET plastic, it is related to PET plastic technical field.The utility model includes dryer and pipeline being set on dryer, the top of pipeline is provided with fan, further includes: pollution collection part, the pollution collection part is set on pipeline;Oscillating filter part, the oscillating filter part is installed on fan;The pollution collection part includes pollution collection subassembly, and the pollution collection subassembly is set on pipeline;And quick assembly and disassembly component, the quick assembly and disassembly component is set on dryer;The pollution collection subassembly includes support plate fixedly connected on the outer wall of pipeline.The utility model is set by setting pollution collection part, solved the impurity of inconvenience to handle wind net filtration, impurity is cleaned down after four places drift, not only difficult to clean, still can enter device internal damage device, inconvenient to keep the clean and normal operation of device.

The utility model relates to the field of protection devices, in particular to a cable bending tightness limiting protection device which comprises a first bending track, a limiting assembly and a pressing assembly. The two ends of the first bending track are respectively provided with a limiting assembly used for adjusting, limiting and fixing according to the size condition of a cable, and the inner side of the first bending track is provided with a plurality of pressing assemblies used for pressing and fixing the position of the cable. According to the utility model, the cable is bent and laid along the first bending track, then the second bending track on the first bending track is taken up to be assembled with the cable, then the limiting assembly is adjusted to be limited and fixed according to the size of the cable, and then the pressing assembly moves downwards to press, fix and protect the cable. By means of the adjustable limiting structure, the function of pressing cables with different diameters can be achieved, the cables with different specifications can be conveniently restrained, the cables are arranged in order, the cables can be prevented from being damaged due to excessive bending, and the performance and the service life of the cables are maintained.

The utility model discloses a ceramic nanofiber coating material storage device which comprises a storage bin and an upper sealing plate, the upper sealing plate is in threaded connection with the storage bin, the storage bin is of a double-layer structure, a material stirring set is arranged in the storage bin, and the material stirring set comprises a rotating shaft support, a rotating shaft, a material mixing shaft, a driving motor and an air blowing assembly. The rotating shaft support is located in a through hole of the storage bin, the rotating shaft is connected to the rotating shaft support in a sleeving mode, and the mixing shaft is located on the outer side of the rotating shaft. According to the device, the comprehensive efficiency of material storage, mixing and using is remarkably improved, high quality and long service life of ceramic nanofiber materials are ensured, and the upper sealing plate is in threaded connection with the storage bin; the external environment influence is effectively isolated; the built-in material stirring group realizes uniform and efficient mixing of materials by utilizing cooperative work of a rotating shaft support, a rotating shaft, a mixing shaft and a driving motor, caking is avoided, and the dispersion uniformity before use is improved.

The utility model relates to a moving iron positioning mechanism for a damper damping preceding stage valve execution assembly, which adopts a single-spring structure to replace the traditional double-spring arrangement, simplifies the adjusting process of preloading force, reduces the number of assemblies and manufacturing cost, changes the original valve armature guided by shaft sleeves at two ends inside into external guide, and improves the working efficiency. The problem that two shaft sleeves are needed for high-precision adjustment in the prior art is avoided, the number of parts is reduced, cost is reduced, assembly efficiency is improved, the friction coefficient between the valve armature and the magnetism isolating sleeve is remarkably reduced due to the arrangement of the movable iron anti-abrasion structure, abrasion is reduced, the service life of the parts is prolonged, and the service life of the parts is prolonged. And the maintenance requirement and the operation cost are reduced, the requirement for the machining precision of the valve armature and the magnetism isolating sleeve is lowered, the machining cost is reduced, and meanwhile the functionality and performance of components are kept.

The invention relates to the technical field of natural rubber preparation, and discloses an imitated smoke sheet rubber and a preparation method and application thereof.The impurity content of the imitated smoke sheet rubber is controlled to be 0.05% or below, the tensile strength is larger than or equal to 25 MPa, the elongation at break is larger than or equal to 750%, the initial plasticity value is larger than or equal to 35, the plasticity retention rate is larger than or equal to 80%, the Mooney viscosity is 83 + / -10 ML (1 + 4) 100 DEG C, and the vulcanization time T90 of a pure rubber formula is 10-25 min. The thermo-oxidative aging resistance retention rate is greater than or equal to 85%, and the ozone cracking resistance time is 9-10 h. The smoke-imitating sheet rubber prepared by the invention is good in mechanical property, proper in vulcanization time, good in thermo-oxidative aging resistance and long in ozone cracking resistance time.