43results about How to "Achieve diffusion" patented technology

The utility model discloses a water treatment device for amino acid production, which belongs to the technical field of amino acid wastewater treatment and comprises a treatment box, a water inlet pipe is communicated with the upper portion of the treatment box, a stirring mechanism, a blocking mechanism and a sediment collecting mechanism are sequentially arranged in the treatment box from top to bottom, and a water outlet pipe is communicated with the lower portion of the side wall of the treatment box. The water outlet pipe is arranged above the blocking mechanism, an intermittent driving mechanism is arranged on the outer top wall of the treatment box, the intermittent driving mechanism is in transmission connection with the stirring mechanism and drives the stirring mechanism to rotate, a chemical injection mechanism is arranged on the upper wall of the treatment box, a chemical nozzle is arranged on the stirring mechanism, and the chemical injection mechanism is connected with the chemical nozzle through a pipeline. The water treatment device for amino acid production provided by the utility model can efficiently and quickly realize uniform dispersion of a medicament and efficient mixing and contact of the medicament and wastewater, and meanwhile, can reduce the probability that sediments at the bottom rise up.

The invention relates to the technical field of fresh-keeping films, and discloses a biodegradable environment-friendly food fresh-keeping film and a manufacturing method thereof.The food fresh-keeping film is manufactured by taking polyadipic acid / butylene terephthalate as a base material and taking a polylactic acid compound, a biological antibacterial agent and the like as auxiliary materials through mixing, extrusion and film blowing processes. The polylactic acid compound is a grafted product of palm fibers and polylactic acid, the reinforcing effect of the palm fibers can be efficiently exerted, transmission and diffusion of stress loads are achieved, and therefore the mechanical property of the preservative film is effectively improved. According to the preservative film, the biological antibacterial agent can participate in a subsequent expansion reaction, so that the biological antibacterial agent enters a preservative film base body, the structure of the preservative film is more compact, the porosity is lower, food spoilage caused by oxygen entering is prevented, in addition, the residence time of the natural antibacterial agent caffeic acid in the preservative film can be effectively prolonged, and the antibacterial durability of the preservative film is guaranteed.

The invention discloses a method for preparing a neodymium iron boron permanent magnet through composite diffusion, and relates to the technical field of rare earth permanent magnet material processing. The method comprises the following steps: step 1, weighing a main alloy material and an auxiliary alloy material; secondly, the main alloy material is smelted and cast into a throwing piece through a piece casting furnace, and then the throwing piece is subjected to annealing treatment. According to the invention, through a composite grain boundary diffusion technology, evaporation treatment is firstly carried out to obtain an intermediate-state magnet, so that the demagnetization exchange coupling effect between adjacent main phase grains is enhanced, and a channel beneficial to subsequent diffusion of heavy rare earth elements is also formed; and then complete diffusion between grain boundaries is achieved, the maximum diffusion depth is achieved, and the best diffusion effect is achieved through subsequent aging treatment.

The utility model discloses a helical blade welding device. The helical blade welding device comprises a mounting seat, the position changing machine is arranged at the top of the mounting seat, and a spiral blade main body is placed at the top of the position changing machine; the first connecting base is fixedly connected to the bottom of the mounting base. According to the scheme, the spiral blade body needing surfacing is fixed to the top of the position changing machine, then the wire feeding mechanism arranged on the top of the welding robot conveys the reinforcing material to the surface of the spiral blade body, and therefore the whole welding robot can deflect by a certain angle on the spiral blade body; the position of the welding robot is correspondingly adjusted according to actual machining requirements, the welding robot can be driven to be close to or away from a spiral blade body, automatic spreading and surfacing of the spiral blade are achieved, surfacing steps are simplified, the time needed by surfacing of a single spiral blade is effectively shortened, and the production efficiency is improved. And large-batch machining can be conducted, and the machining efficiency of the spiral blades can be improved to a certain degree.

The invention relates to a method for improving the thermal conductivity of an aluminum-silicon composite material, which is characterized in that alpha-Al crystal grains and a silicon phase of an aluminum-silicon alloy are regulated and controlled through a high-temperature solid solution and low-temperature aging process, the solid solubility of a silicon element in a collective body is reduced, and the thermal conductivity is improved. The silicon phase is spheroidized through high-temperature solution treatment, the aluminum-silicon two-phase interface density is reduced, meanwhile, growth of aluminum matrix crystal grains is promoted through high temperature, and the crystal boundary density of an aluminum matrix is reduced; and subsequent low-temperature aging treatment promotes sufficient diffusion and precipitation of silicon elements, lattice distortion of an aluminum matrix is reduced, and the heat conductivity of the aluminum-silicon alloy is further improved.

The utility model belongs to the technical field of frequency converters, and especially relates to a frequency converter IGBT heat radiation structure comprising a frequency converter main body, the bottom of the frequency converter main body is provided with a heat radiation plate, and the heat radiation plate is internally provided with a water cooling mechanism; function boxes are fixedly installed on the two sides of the heat dissipation plate, motors are fixedly installed on the inner walls of the front sides of the function boxes, reciprocating mechanisms are arranged between the motors and the function boxes, and heat dissipation mechanisms are arranged below the function boxes. According to the utility model, the design is reasonable, through the arrangement of the water cooling mechanism, the purpose of diffusing the heat absorbed by the heat dissipation plate to the outside through the heat dissipation sheets can be realized, and the purpose of conducting the temperature and dissipating the heat of the frequency converter main body can be further realized; the purpose that heat on the cooling fins can be rapidly diffused can be achieved, reciprocating air blowing can be conducted on the cooling fins through the radiator, the heat dissipation speed can be increased, and the heat dissipation efficiency can be improved.

The utility model discloses an ophthalmic clinical shadowless lamp, which comprises a universal support, a lamp body, a ventilation cylinder sleeve and a focusing component, the universal support is mounted at the center of the back of the lamp body, a controller, an exhaust tube, a ventilation cavity and an LED lamp panel are arranged in the lamp body, LED lamp beads and first ventilation holes are embedded in the LED lamp panel, and the first ventilation holes are communicated with the exhaust tube. A plurality of second ventilation holes corresponding to the first ventilation holes are formed in the bottom wall of the ventilation cavity, third ventilation holes are evenly formed in the glass cover, the bottom end of the exhaust pipe communicates with the top of the ventilation cavity, the top end of the exhaust pipe extends out of the lamp body, a plurality of L-shaped air inlet pipelines are arranged in the ventilation cylinder sleeve, and the focusing assembly is arranged at the bottom of the ventilation cylinder sleeve. The ventilation fan exhausts air outwards from the ventilation cavity, so that the ventilation cavity is in negative pressure, air in the ventilation cylinder sleeve enters the surface of the LED lamp panel from the third ventilation hole to take away heat, and the air is filtered by the air filtering cotton net to ensure that the air is dustless; the focal length is adjusted according to the depth of the convex focusing cylinder screwing the convex part into the ventilation cylinder sleeve.

The application discloses a preparation method of a multistage coating oxygen-mediated annealing based on RAFM steel / titanium nitride, and belongs to the technical field of coating preparation. The application method comprises the following steps: depositing a TiN coating on the surface of a low-activated ferrite / martensite steel base by using a magnetron sputtering, using a pure titanium target, and setting the nitrogen / argon flow ratio to 1:13-1:18, the base vacuum degree to 4-6*10 ‑5 Pa, and the deposition time to 60-90 min, and not applying additional active heating to the base during the deposition process; packaging the deposited coating sample in a quartz tube, providing a trace oxygen atmosphere in the tube by means of the gas pressure in the tube; and then performing 800-1000 DEG C annealing treatment and keeping the temperature for 90-120 min. Through oxygen-mediated element diffusion and reaction, a multistage composite structure, which comprises, from the base outward, an internal oxidation layer, an Fe internal enrichment layer, a TiN layer, an Fe external enrichment layer and an external oxidation layer, is formed in the TiN coating in situ. The application method is simple in process, does not need to deposit a transition layer additionally, the prepared multistage coating is well combined with the base, has excellent thermal shock resistance, and can withstand more than 30 times of thermal shock cycles.

The invention relates to the field of sound energy conversion control, in particular to a microphone which comprises a body and a microphone head arranged at the end of the body and further comprises a microphone head, a supporting seat is fixed to the end, close to the microphone head, of the body, the microphone head is located in the supporting seat, a connecting sleeve is fixed to the supporting seat, and the microphone head is located in the connecting sleeve. And a plug sleeve is fixed on the side wall of the microphone head and is plugged on the outer wall of the connecting sleeve. The microphone has the advantages that the head of the microphone is convenient to detach, use of the microphone is not affected, and the requirements of users with different microphone size requirements are met.

This application provides a control method, device, controller, and vehicle for roof crush protection. The method includes: performing target detection based on surround-view perception data acquired by the vehicle to obtain the target type and the relative position information between the target and the vehicle; if the target type is a potential roof crush type, determining whether protection conditions are met based on the relative position information between the target and the vehicle; if the protection conditions are met, switching the controlled vehicle's roof crush protection structure from a retracted state to an extended state to form a rigid roof support structure, thereby increasing the vehicle's vertical height. This method aims to improve the vehicle's roof crush protection effect.

The present invention provides a method and device for barreling radioactive resin after drying, comprising the following steps: S1: an empty barrel with a top cover is transported to roller conveyor 1 at the entrance of a barreling device through a roller conveyor, and the electric airtight door at the entrance of the barreling device is opened; S2: roller conveyors 1 and 2 are started to transport the empty barrel to a capping position inside the barreling device; S3: the electric airtight door is closed to put the filling station in a completely sealed state; S5: after the capping is completed, roller conveyor 2 is started to transport the waste barrel to the resin filling position, and the waste barrel lifting device is started to make the empty barrel tightly docked with the top plate inside the filling device; the present invention can avoid the diffusion of aerosols during the barreling process through the airtight design of the barreling device, even if a small amount of gas overflows into the barreling device, due to the airtight design of the barreling device, the overflowed gas is directly discharged to the downstream exhaust gas treatment system through a pipeline, and will not cause any impact on the environmental area where the equipment is located.

The invention discloses a light band projection lamp cooperating with a self-closed loop vehicle lamp, comprising: a light source emitting an X-direction light beam and a Y-direction light beam; the lens group is sequentially provided with a first lens and a second lens from the object plane to the image plane; the Y-direction light beam is collimated and converged in the height direction through the first lens and the second lens, and the X-direction light beam is diffused and superposed in the length direction through the first lens and the second lens; the first lens comprises a surface S1 and a surface S2, the second lens comprises a surface S3 and a surface S4, and the surface S2 and the surface S3 are oppositely arranged at an interval and are both of an asymmetrical surface type. According to the light band projection lamp cooperating with the self-closed-loop vehicle lamp, light band projection with the ultra-large field angle can be achieved, the sharp boundary and the extremely high length-width ratio are achieved, the system is simple, and cost is low.

This utility model relates to the field of biological experimental equipment technology, and provides a lighting cage with a liquid cooling device, including a cage body; a set of metal lamp plates are fixedly connected to all four sides of the cage body, with each set of metal lamp plates fixedly connected to the others, and the four sets of metal lamp plates connected in pairs; each metal lamp plate has multiple LEDs on the side closest to the cage body. This lighting cage with a liquid cooling device, by arranging multiple metal lamp plates around the cage body, meets the needs of omnidirectional lighting experiments for animals inside the cage. The liquid cooling component can promptly remove the heat generated by the LEDs when the metal lamp plates are in operation, effectively preventing heat sources from interfering with the animal's physiological state and experimental results. Simultaneously, the bottom support component suspends the cage body, which not only enhances heat dissipation but also allows for the containment of excrement and the diffusion of volatile gases, significantly improving the practicality and experimental reliability of the device.

The invention discloses a multistage coating oxygen-mediated annealing preparation method based on RAFM steel / titanium nitride, and belongs to the technical field of coating preparation. The method comprises the steps that a TiN coating is deposited on the surface of a low-activation ferrite / martensitic steel matrix through magnetron sputtering, a pure titanium target material is used, the nitrogen-argon flow ratio is 1: 13-1: 18, the background vacuum degree is 4-6 * 10 <-5 > Pa, the deposition time is 60-90 min, and extra active heating is not applied to the matrix in the deposition process; placing the deposition coating sample in a quartz tube for packaging, wherein the gas pressure in the tube provides a trace oxygen atmosphere; and then annealing treatment is conducted at the temperature of 800-1000 DEG C, and heat preservation is conducted for 90-120 Through oxygen-mediated element diffusion and reaction, a multi-stage composite structure sequentially comprising an inner oxide layer, an Fe inner enrichment layer, a TiN layer, an Fe outer enrichment layer and an outer oxide layer from a matrix to the outside is formed in the TiN coating in situ. The method is simple in process, a transition layer does not need to be additionally deposited, and the prepared multi-stage coating is well combined with a matrix interface, has excellent thermal shock resistance and can bear more than 30 times of thermal shock cycles.

The invention relates to the technical field of cables, and discloses a safety early warning cable with a temperature sensing function and a production process thereof.According to the cable, a spiral metal protection tube and a temperature measurement optical fiber are arranged in a conductor to form a core temperature measurement channel, and a redundant temperature measurement system is formed in cooperation with a multi-core sensing optical cable; vibration sources are accurately distinguished by combining two-way vibration sensing and AI signal recognition, and meanwhile, a multi-layer composite isolation layer and a three-dimensional heat conduction network are designed, so that efficient heat diffusion is achieved; according to the production process, the insulation performance of the cable and the stability of the sensing element are improved through a precise temperature control co-extrusion process, an online thermal stress relaxation treatment process and an optical fiber pre-fixing process. According to the invention, the temperature measurement reliability and the vibration identification precision are obviously improved, the cable thermal management capability is optimized, the service life is prolonged, the insulation eccentricity and the pre-crosslinking defect can be effectively reduced by the production process, and the overall quality of the product is improved.

The utility model discloses an aeration disc anti-clogging diffuser for sewage treatment, which comprises a bearing pipe body, an airflow diffusion mechanism is fixed on one side in the bearing pipe body, a rotating rod is rotatably connected in the airflow diffusion mechanism, a connector is fixed at one end of the rotating rod, and the other end of the rotating rod is connected with the bearing pipe body. The bearing pipe body is provided with a connector, four turbine blades are fixed to the circumferential side wall of the connector at equal intervals, four cleaning mechanisms are fixed to one end of the connector at equal intervals, a filter screen plate is installed at one end of the bearing pipe body, the cleaning mechanisms correspond to the filter screen plate, and a sealing head is connected to one end of the bearing pipe body in a threaded and screwed mode. According to the utility model, not only can the blocking rate of the pore passage of the aeration disc be effectively reduced, but also the quick disassembly and assembly can be carried out, the maintenance cost and time are greatly reduced, in addition, the aeration efficiency is further improved, the goal of sewage treatment can be better realized, the service lives of the aeration disc and related equipment are prolonged, and the frequency of equipment replacement is reduced.

The utility model provides a rapid cutting device for paperboard processing, and belongs to the technical field of paperboard processing. Comprising a fixing assembly, the fixing assembly comprises guide plates arranged at the top of a cutting table, positioning legs are arranged at the bottoms of the guide plates, open grooves are formed in the sides, away from the positioning legs, of the guide plates, rolling wheels are arranged on the guide plates through the open grooves, and first supporting blocks are fixed to the tops of the guide plates; a first telescopic plate is fixed to one side of a first supporting block, a fixing assembly is used for fixing and guiding a paperboard when the paperboard is cut, a guide plate at the top of a cutting table is stably placed through positioning legs at the bottom, a rolling wheel is arranged on a groove in one side of the guide plate, the paperboard can move more smoothly, and the first supporting block is fixed to the top of the guide plate; the length of the first telescopic plate on one side can be flexibly adjusted, the assembly can effectively fix the paperboard, it is guaranteed that the cutting direction is accurate, and the cutting stability and precision are improved.

The utility model relates to the technical field of simulation plants, and discloses a simulation plant with a fly catching function, which comprises a pot body, an inner mounting piece is arranged in the pot body, uniformly distributed mounting grooves are formed in the upper side in the inner mounting piece, uniformly distributed mounting blocks are arranged on the upper side in the inner mounting piece, and the mounting grooves are communicated with the mounting blocks. The mounting block is slidably connected to the interior of the mounting groove, pull blocks are arranged on the left side and the right side of the upper portion of the mounting block, inserting rods are fixedly connected to the bottoms of the pull blocks, springs are arranged outside the inserting rods, and a trapping assembly is arranged on the upper portion of the mounting block and comprises a simulation branch rod; the simulation branch rod is fixedly connected to the upper portion of the mounting block, and the top end of the simulation branch rod is in threaded connection with a lamp wick. According to the fly trap, flies are effectively caught and prevented from escaping, the fly trap is convenient to disassemble and replace, the attractant is stored, fragrance is diffused, and the trapping performance of the flies is improved.

The utility model discloses treatment agent self-adaptive coating equipment for irregular vamps, and belongs to the technical field of vamp preparation. The device comprises a positioning and clamping tool, a coating tool assembly, a glue barrel assembly and a three-axis linkage assembly, the positioning and clamping tool comprises a first air cylinder, a clamping jaw and a linear guide rail; the first air cylinder is connected with the clamping jaw through the connecting rod mechanism, and the clamping jaw is installed on the linear guide rail in a sliding mode. The coating tool assembly comprises an air blowing nozzle, a dispensing valve, a sliding table air cylinder and a dispensing nozzle; through cooperative control of the three-axis linkage assembly and the gluing head and in combination with the distance measuring sensor for real-time feedback, accurate self-adaptive coating of irregular vamp curved surfaces can be achieved, the technical problems that traditional equipment is uneven in coating, unclear in sideline and scattered in point are effectively solved, the position precision of treating agent coating is remarkably improved, and the working efficiency is improved. And the vamp processing quality is reliably guaranteed.

The invention belongs to the technical field of nanofiltration, and provides a polyamide composite nanofiltration membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing hydrotalcite colloid through a nucleation reaction and crystallization reaction isolation method; mixing the hydrotalcite colloid with piperazine, and coating the porous base membrane with the obtained precursor material liquid to form a hydrotalcite intermediate layer containing piperazine; further dropwise adding a trimesoyl chloride solution to the surface of the middle layer, and carrying out interfacial polymerization reaction to form a polyamide layer, so as to finally prepare the polyamide composite nanofiltration membrane. According to the preparation method, precursor feed liquid containing hydrotalcite colloid and piperazine is jointly deposited on the porous base membrane, and controllable diffusion of the amine monomer can be realized by virtue of hydrogen bond interaction of hydroxyl uniformly distributed on a hydrotalcite main body laminate and the amine monomer (piperazine) and retardation diffusion of a two-dimensional laminate of hydrotalcite on the amine monomer; therefore, an ultrathin polyamide layer with higher performance is prepared, and the final polyamide composite nanofiltration membrane has excellent flux and rejection rate.

The present invention discloses a lamp with a light distribution function for an irradiated surface, comprising a lampshade and a metal halide lamp light source arranged in the lampshade, the lampshade being provided with a light outlet, a light distribution plate being provided at the light outlet, the light distribution plate being provided with an outward convex portion, and an inner concave surface being provided between the convex portion and the light distribution plate; the light emitted by the metal halide lamp light source can be actively distributed through the light distribution plate, that is, the light passing through the light distribution plate is compensated to the edge through the inner concave surface on the light distribution plate, so that the light on the irradiated surface is more uniform, and the convex portion provided at the same time further compensates for the phenomenon that the central part of the light distribution plate is closer to the light source and the side is darker. Since the thickness of the central part is greater than that of the side part, the light passing through the convex portion has more interference diffusion times, so that the light in the central part is scattered and diffused to the surroundings, so as to avoid the occurrence of light spots caused by the light intensity in the central part being much greater than that in the surroundings.

The invention relates to the technical field of high-voltage switch equipment and vacuum arc extinguishing, in particular to a composite magnetic field contact structure and a vacuum arc extinguishing chamber based on the composite magnetic field contact structure. The contact blade assembly comprises an inner-ring contact blade and an outer-ring contact blade, the inner-ring contact blade is arranged in the central area of the facing cambered surface of the contact cup, and the outer-ring contact blade is circumferentially distributed on the radial outer side of the inner-ring contact blade; according to the invention, through the longitudinal magnetic field contact cup and the transverse magnetic field contact piece, an arc extinguishing mode that accumulation is prevented by utilizing longitudinal magnetism in an arc starting area and rotation is promoted by utilizing transverse magnetism in a diffusion area is realized, and the arc extinguishing capability of the vacuum arc extinguishing chamber is improved.

This application relates to a vacuum drying apparatus for highly consistent film formation, comprising a housing with a sealed processing chamber inside; a negative pressure component connected to the processing chamber via multiple air extraction ports; and a flow equalization component located at the top inner edge of the housing for equalizing the airflow generated by the negative pressure component. The flow equalization component includes multiple flow equalization plates, each with multiple uniformly distributed flow equalization grooves on its top surface, and multiple through-hole air extraction holes at the bottom of each groove. Multiple flow equalization plates are stacked sequentially, with the top plate of the stack pressed against the top inner edge of the housing. Multiple air extraction holes on the upper flow equalization plate are connected to multiple flow equalization grooves on the lower flow equalization plate. This application utilizes the flow equalization component to perform multi-layer flow equalization and stabilization treatment on the high-speed, concentrated airflow before applying it to the processing chamber. This ensures the uniformity of the airflow on the film surface while maintaining the extraction rate, and the airflow is gentler, thus ensuring consistent film formation and improving film quality.

The present invention discloses an umbrella that changes color according to weather changes, comprising an umbrella cloth laid on an umbrella rib, a light guide strip fixedly embedded in the middle of the umbrella cloth, one end of the light guide strip facing the center of the umbrella cloth and fixedly connected to the umbrella top, a cavity is provided in the internal hollow of the umbrella top, a multi-color LED light strip is fixedly connected in the cavity, an outer ring of the multi-color LED light strip is fixedly connected to a light guide ring, an outer wall of the light guide ring away from the multi-color LED light strip is fixedly connected to the umbrella cloth, the multi-color LED light strip is connected to a microprocessor through wires, the microprocessor is fixedly arranged at the upper end in a telescopic support rod, the top end of the telescopic support rod is fixedly connected to the bottom end of the umbrella top, a cylindrical lithium battery is fixedly connected to the inner wall of the lower section of the telescopic support rod, and a charging socket fixedly connected to the bottom of the telescopic support rod is provided at the bottom of the cylindrical lithium battery; a fixed support rod is provided on the outer sliding sleeve of the telescopic support rod, the bottom of the fixed support rod is connected to a handle through a threaded structure, the top inner wall of the handle is fixedly connected to a charging seat, and the bottom end of the handle is provided with a charging port.

The utility model relates to the technical field of LED lamp zooming, in particular to a zooming accessory for an LED lamp, which comprises a lamp holder, a lamp body, a light condensing component and a zooming component, the zooming component is mounted on the upper portion of the lamp holder, the lamp body and the light condensing component are mounted between the lamp holder and the zooming component, the lamp holder comprises a mounting circular groove and a mounting ring, and the mounting ring is mounted in the mounting circular groove. And the lamp body and the light condensing assembly are mounted in the mounting circular groove. By installing the zooming assembly, focusing and diffusion of light beams of the LED lamp can be achieved, the requirements of different lighting scenes are met, the compact layout of the lamp body and the condensation assembly is matched with the design of heat dissipation holes in the lamp holder, the heat dissipation efficiency is effectively improved, the service life of the LED lamp is prolonged, and due to the circumferential arrangement design of the main LED lamp and the auxiliary LED lamp, the service life of the LED lamp is prolonged. By combining the corresponding electrical connection of the circuit board, not only is the lighting effect enhanced, but also the energy efficiency ratio of the lamp is improved, and the durability, the installation convenience and the heat dissipation performance of the lamp are considered while the lighting effect is ensured.

The invention relates to the technical field of aluminum product surface machining, in particular to an aluminum product surface machining device which comprises a gun body, a fixing part is arranged at a muzzle of the gun body, a plurality of diffusion assemblies used for controlling coating distribution are arranged on the outer surface of the end, away from the gun body, of the fixing part, and an elastic assembly is arranged in the fixing part. The multiple diffusion assemblies are hinged to the elastic assembly, and guide assemblies are arranged at the ends, corresponding to the upwarp ends of the multiple diffusion assemblies, of the fixing piece. The aluminum product spraying device has the beneficial effects that by arranging the diffusion assembly, the elastic assembly and the guide assembly and utilizing simple trigger control, a worker can easily adjust the spraying pressure and the diffusion range according to needs, when corners or surface concave positions of an aluminum product need to be sprayed, the discharging pressure is reduced, small-range diffusion of paint is achieved, and the spraying efficiency is improved. And unnecessary coating diffusion is reduced, it is ensured that the target area can be accurately coated with the coating, the problem of uneven spraying or missing spraying is avoided, and the universality and flexibility of equipment are improved.

The utility model relates to the technical field of toilet deodorization, in particular to a motor train unit train toilet deodorization device which comprises a base, a sleeve is fixedly connected to the top of the base, a sensor is arranged outside the sleeve, an inverted bucket is fixedly connected to the top of the sleeve, and the sleeve is communicated with the interior of the inverted bucket. A through groove is formed in the top of the inversion bucket, six sets of fan blades are rotatably connected to the interior of the through groove and distributed at equal intervals, swing rods are rotatably connected to the sides, away from each other, of the fan blades, and a rotating disc is rotatably connected to the side, away from the fan blades, of each swing rod. Compared with an existing deodorization device for the toilet of the motor train unit, the deodorization device for the toilet of the motor train unit has the advantages that through the design of the fan blades and the telescopic rod, fragrance can be diffused and sealed according to requirements, and the overall practicability is greatly improved.

The invention relates to a visual angle expanding film, a polaroid and a display device, the visual angle expanding film comprises a first refractive index layer and a second refractive index layer, and the first refractive index layer comprises at least one patterned refractive unit; the second refractive index layer covers the refraction unit, and the refractive index of the second refractive index layer is greater than that of the first refractive index layer; wherein the refraction unit comprises a first refraction structure and a second refraction structure, the first refraction structure extends in the first direction, the second refraction structure extends in the second direction, and the first direction intersects with the second direction. The patterned refraction unit of the visual angle expanding film is composed of the first refraction structure and the second refraction structure in different directions, diffusion of polarized light in different directions can be achieved, and the risk that moire patterns are poor due to mutual interference between the polarized light and periodic structures of pixels and a backlight diaphragm can be reduced; and the matching angle of the absorption axis of the polaroid is not limited by the visual angle expanding film.

The invention discloses a thermal diode fabric for personal cooling and a preparation method thereof. The preparation method comprises the following steps: preparing a spinning solution containing heat-conducting particles, a hydrophobic polymer and a cross-linking agent; performing electrostatic spinning in a low-humidity environment to obtain a compact heat transfer fiber membrane layer; carrying out electrostatic spinning in a high-humidity environment by taking the obtained compact heat-transfer fiber membrane layer as a receiving base material to obtain a fluffy heat-insulation fiber flocculus layer; and finally, carrying out cross-linking heat treatment to obtain the thermal diode fabric. According to the preparation method, a simple electrostatic spinning preparation process is utilized, and the fiber material with a double-layer asymmetric density structure is prepared in one step only by regulating and controlling the humidity under the condition that a spinning solution is not changed; the one-way heat conduction effect similar to that of a hot diode is achieved, effective heat dissipation when the human body is in a cold environment and effective heat insulation when the human body is in a hot environment can be achieved, and the skin temperature is kept under the situation that the temperature change difference is large when the human body enters and exits an air-conditioning place in summer.

The utility model provides a multi-contact vehicle machine screen detection device. The device can simulate multi-point touch operation; controlling the pressure of the clamping device; the lens is adapted to a curved screen; the screen zooming function can be detected. The specific functions of the device are realized as follows: the end effector controls the micro conductive silica gel disc to be powered on and powered off, a complex multi-contact operation scene is simulated, and the reliability and the accuracy of the multi-contact function of the vehicle machine screen are detected. A lifting type clamping base is adopted, so that the clamping pressure and the clamping size can be adjusted; and the loss caused by improper clamping can be effectively reduced. The five auxiliary touch control rods can stretch out and draw back within a certain range under the action of built-in springs, so that the touch control rods can better adapt to a curved screen; the slotted disc can limit the contraction and expansion of the elastic touch control assembly within a certain range, and the elastic touch control assembly is driven to slide on the screen under the action of the slotted disc through the on-off of the miniature conductive silica gel disc on the screen so as to realize the zooming function.