122results about How to "Avoid uneven temperature" patented technology

The present invention relates to a pultrusion process for making glass fibre reinforced plastics tube and its special-purpose die equipment. Said process includes the steps of soaking yarn, felt-yarncombination, preforming, solidfying and forming and tube-discharging and coaling. Its special-purpose die equipment includes a die cavity whose internal diameter is equal to the external diameter of formed glass fibre reinforced plastic tube, the periphery of said die cavity is equipped with heating device, a die core whose external diameter is equal to the internal diameter of formed glass fibrereinforced plastic tube is cover-mounted in the interior of die cavity, the centre of said die core is hoelow, and its interior is equipped with heating device. Said invention adopts common heating method in exterior and interior of said die cavity, so that the interior and exterior of glass fibre reinforced plastic tube are solidified well, and its surface is smooth.

The invention relates to a fiber reinforced plastic (FRP) pultruded profile for a bridge, forming equipment and a preparation method. The FRP pultruded profile for the bridge has the characteristics that the pultruded profile has the width of 220 mm to 250 mm and the height of 130 mm to 160 mm; and the section is shaped like a three-cavity rectangular frame. The forming equipment has the characteristics that an inner cavity of a thermal forming die adopts a three-cavity structure with the same shape as that of the FRP pultruded profile with the section shaped like the three-cavity rectangular frame; the forming equipment comprises a die core bracket, a die outer cavity and three die cores; and a die core heating device is inserted into a cavity of the die core. The preparation method comprises the following steps: preparing glue solution; selecting a fiber pultrusion yarn and fiber fabric and gumming; entering the thermal forming die through a pre-forming die, heating and solidifying; performing fixed-scale cutting; and forming the FRP pultruded profile for the bridge, wherein the section of the FRP pultruded profile is shaped like the three-cavity rectangular frame. The FRP pultruded profile for the bridge has light self-weight which is 20 to 40 percent of a concrete board, is high in bearing capacity, convenient in construction, quick in mounting, high in shearing strength and high in weather resistance, solves the problem that the common FRP bridge deck slab is damaged before bending damage, avoids sudden accidents and is favorable for popularization and application.

The invention discloses an energy-saving environmental-friendly efficient tower type grain impurity and dust removing and drying system device which comprises a stock bin. A dust removing mechanism is arranged at the lower portion of the stock bin. The dust removing mechanism comprises an inclined conveying belt type coarse drying device, a reciprocating type horizontal sieve device and a winnowing type impurity and dust removing device. The output end of the dust removing mechanism is connected with a drying mechanism, and the drying mechanism comprises a hot wind drying device and a cold wind drying device. The energy-saving environmental-friendly efficient tower type grain impurity and dust removing and drying system device has the beneficial effects of saving the manpower resource, improving working efficiency, and being good in practicality.

The invention provides a high-pollution building space exhaust disinfection and purification system and method. The system comprises a pollution region negative pressure metal ventilation pipe, and any position of the pollution region negative pressure metal ventilation pipe is communicated to the inlet end of a high-resistance ventilation pipeline with a heat insulation and insulation layer. Theoutlet end of the high-resistance ventilation pipeline with the heat insulation and insulation layer is connected to the inlet end of an outdoor negative pressure metal ventilation pipe through an electric backflow prevention valve, and the outlet end of the outdoor negative pressure metal ventilation pipe is connected to an extraction opening of an efficient frequency conversion draught fan. A plurality of virus killing devices are sequentially arranged at the rear end of the efficient variable-frequency draught fan. By means of the system and method, air possibly containing viruses in a high-pollution building space is subjected to high-temperature disinfection and sterilization through an electric heating pipeline, then the air subjected to high-temperature disinfection and sterilization is guided to an outdoor multi-virus disinfection and sterilization device through the negative pressure pipeline to conduct diversified thorough disinfection and sterilization on the introduced air,and the viruses in the air in the high-pollution building space can be thoroughly removed.

Disclosed are a sidelight type backlight module and the operation method thereof; wherein, the sidelight type backlight module comprises a light guide plate and a plurality of LED light sources. The light guide plate includes a light input lateral side and a light output surface. The LED light sources are arranged on the light input lateral side; an interval is maintained between each two adjacent LED light sources; wherein, the LED light sources are arranged with unequal intervals. The sidelight type backlight module can prevent the uneven temperature problem, have no influence on the optical quality and prevent the warping phenomenon of the light guide plate.

The present invention relates to a hot-pressing device used for electrically and mechanically connecting for the two electronic components waiting for pressing and a hot-pressing method by adopting the hot-pressing device. The hot-pressing device comprises a control unit and a hot-pressing contract electrically connected with thereof, wherein, the hot-pressing contract comprises a plurality of heating noumena, and the control unit respectively controls each heating noumenon to work. The hot-pressing device ensures the even temperature on the surface of the pressing position of the electronic components waiting for pressing by controlling the working of a plurality of heating noumena by the control unit, and avoids that: the disproportionation of heat transmission and releasing causes the temperature uneven in the pressing position, thereby causing the impact to pressing quality.

The invention relates to the technical field of semiconductor devices, particularly to a reaction chamber temperature zone control system. A sealed reaction chamber is divided into a plurality of zones; thermometers can sense the temperatures of different zones in the sealed reaction chamber; a temperature controller is connected to the thermometers; the temperature controller is internally provided with temperature control software; the temperature control software calculates temperature compensations of the corresponding zones in the sealed reaction chamber, sensed by the thermometers, and heats the zones, corresponding to the temperature compensations, in the sealed reaction chamber according to the temperature compensations. According to the technical scheme of the invention, the sealed reaction chamber is divided into the plurality of zones, the temperature compensations of the zones can be calculated respectively, and the corresponding zones can be heated according to the temperature compensations, in such a way that the problems that a gas inlet port and a gas exhaust port of the sealed reaction chamber and other zones of the sealed reaction chamber have different temperatures after being heated, and uneven heating of a silicon chip depositing material is due to uneven thickness of the silicon chip depositing material, can be solved; and the uniformity and the stability of a hot-working technology effect can be improved, and the purpose of controlling the temperature can be effectively achieved.

The invention provides a high-temperature high-speed metal sheet hot stamping forming limit testing device and a high-temperature high-speed metal sheet hot stamping forming limit testing method. Thehigh-temperature high-speed metal sheet hot stamping forming limit testing device comprises a high-frequency induction heating box, a robotic arm, a stamping structure, a supporting structure, an optical strain measuring device, an infrared thermometer and a control device, wherein the stamping structure comprises a hemispherical stamping head, a blank pressing ring and a concave mould; a high-power stamping head heating rod and a stamping head temperature sensor are arranged inside the hemispherical stamping head; high-frequency induction coils are arranged on the peripheries of the blank pressing ring and the concave mould; high-power heating rods and temperature sensors are arranged inside the blank pressing ring and the concave mould; the supporting structure comprises an upper mould frame and a lower mould frame which are connected through guide posts; a stamping head hydraulic cylinder and a blank pressing ring hydraulic cylinder are mounted on the upper mould frame; the hemispherical stamping head is connected with the stamping head hydraulic cylinder through a connecting rod; the blank pressing ring is connected with the blank pressing ring hydraulic cylinder; the concave mould is fixedly mounted on the lower mould frame. Through the high-temperature high-speed metal sheet hot stamping forming limit testing device and the high-temperature high-speed metal sheet hot stamping forming limit testing method, a high-temperature and high-speed metal sheet forming limit diagram which fully meets the actual industrial hot stamping technological flow can be established, a covered working condition range is wide, the applicability is strong, optimization of a hot stamping technology can be effectively guided and the research and development cycle of a product is shortened.

The present invention provides a positioning device which can accurately position a substrate without damaging it even if the substrate is made large. In a state where a slide member 6 is retreated, a cylinder unit 2 is operated to raise a supporting member 3, and a substrate W is received by the upper surface of the reception part 11 of a lifting member 8. Next, the cylinder unit 2 is operated to lower the supporting member 3 until the substrate W is on the same level of the slide member 6 of an alignment member 5, and a valve is changed over to connect the piping 12 of the lifting member 8 to a compressed air source. An air is allowed to be jetted from grooves 16 and 17 on the upper surface of the reception part 11 of the lifting member 8, so as to lift the substrate W from the upper surface of the reception part 11, move forward the slide member 6 of the alignment member 5, and bring a pusher 7 into contact with the edge of the substrate W for positioning.

The invention discloses a cylindrical refrigerator. The cylindrical refrigerator comprises a refrigerator body, an opening is formed in one side of the refrigerator body, and a door body is arranged on the opening; the cross section of the refrigerator body is in an optimal arc shape, and the section shape of the door body is in an inferior arc shape; when the door body is closed, a cylindrical whole structure is jointly formed by the refrigerator body and the door body; and the refrigerator body comprises a cold storage chamber and a freezing chamber which are vertically arranged; the center of the cold storage chamber and the center of the freezing chamber are each provided with a vertical stand column, and a disc shelf is rotatably arranged on the stand columns; and a plurality of air outlets are formed in the stand columns in the circumferential direction, and a lighting device is arranged around the stand columns. Compared with the prior art, the cylindrical refrigerator has the following advantages that the cylindrical refrigerator can achieve 360-degree air supplying, 360-degree lighting and 360-degree rotation of the shelf.

The invention discloses an aluminum alloy electrolytic oxidation film forming device. The aluminum alloy electrolytic oxidation film forming device comprises an oxidation device and a temperature control device; the oxidation device comprises an oxidation tank; a temperature sensor is arranged in the oxidation tank; the oxidation device further comprises an oxidation tank liquid circulation device; the temperature control device comprises a temperature control tank, the oxidation tank is placed in the temperature control tank, a temperature control room is formed between the oxidation tank andthe temperature control tank; a heating device is arranged in the temperature control room, and a cooling device is arranged outside the temperature control tank; and the temperature sensor, the heating device and the cooling device are all electrically connected to a controller. According to the aluminum alloy electrolytic oxidation film forming device, precise control of the oxidation temperature can be realized, different oxidation temperatures can be controlled according to different stages of oxidation film forming, and the oxidation tank liquid circulation device further improves the temperature uniformity of oxidation liquid; and the whole oxidation film forming is carried out under a single temperature or variable temperature conditions of multiple temperatures, the quality of film forming is improved, and the experiment and production requirements of oxidation film forming are met.

The invention discloses a heating device for metallorganic chemical deposition equipment, which comprises: at least two sections of furnace wires which are arranged on the same heating plane and are connected to respective electrodes; a thermo detector which is arranged below the at least two sections of furnace wires and close to the heating plane and is used for detecting the heating temperatures of the two sections of furnace wires; and a temperature controller which, according to the temperatures detected by the thermo detector, controls the heating powers applied to the sections of furnace wire to control the heating temperatures of the at least two sections of furnace wires respectively so as to homogenize the heating temperatures of the at least two sections of furnace wires. In the heating device for the metallorganic chemical deposition equipment, multi-section furnace wire heating is adopted, the independent control of the heating power of each section of furnace wire and/or the design of the shape and size of the furnace realize homogeneous and controllable large-area heating temperatures, so the quality of an epitaxial material is improved. In addition, a cold water electrode and a heater shield are adopted to further improve heating stability and safety.

The invention discloses a thermal distributed tobacco curing barn. A plurality of groups of carbon crystal plates are arranged at the bottom and the top of a curing barn body; the upper side of the back surface of the curing barn body is provided with a number of dehumidifying fans, and a cold air door is arranged on the lower side of the back surface of the curing barn body; a first tobacco hanging frame is arranged in the middle of the curing barn body, a second tobacco hanging frame is arranged on the inner walls of the two sides of the curing barn body, and a temperature sensor, a humiditysensor and the carbon crystal plates are electrically connected with a control cabinet through wires. According to the invention, a traditional hot air chamber is cancelled; the plurality of groups of carbon crystal plates are arranged at the bottom and the top of the curing barn body; heat radiation and weak convection are transmitted to the outside; heat radiation is mainly carried out throughfar infrared radiation, after the far infrared radiation is absorbed by tobacco leaves, intense molecular resonance of moisture in the tobacco leaves is caused, the molecular resonance generates heat,the temperature in the tobacco leaves is promoted to rise, the purpose of synchronously drying the moisture in the tobacco leaves and surface moisture is achieved, the tobacco leaf baking efficiencyand quality are improved, and environmental pollution is avoided.

The invention belongs to the technical field of building materials machinery and discloses a steam curing device of slag unburned bricks. The steam curing device comprises a steam curing reaction tank and a steam output device, wherein the steam curing reaction tank comprises a base, a raw brick bracket, a cover body, a gas inlet pipeline and a gas discharge pipeline; the raw brick bracket is arranged on the base, gas inlet holes are arranged in the base and connected with the gas inlet pipeline, the cover body covers the base, a gas discharge hole is connected is arranged on the cover body and connected with the gas discharge pipeline, and the gas inlet pipeline and the gas discharge pipeline are connected with the steam output device respectively. The water steam uniformly disperses, the temperature and the humidity in the steam curing reaction tank are proper, the heat loss is less, the usage amount of steam is small, and the quality of the cured slag unburned bricks is furthermore improved.

The invention relates to the technical field of liquid crystal display devices, in particular to a touch liquid crystal display device avoiding residual images. The touch liquid crystal display deviceavoiding the residual images comprises a liquid crystal display panel and a backlight module, wherein the liquid crystal display panel comprises a first substrate, a second substrate opposite to thefirst substrate and a liquid crystal layer arranged between the first substrate and the second substrate; a first liquid metal layer is arranged on one face, facing the liquid crystal layer, of the first substrate, a second liquid metal layer is arranged on one face, facing the liquid crystal layer, of the second substrate, and the first liquid metal layer is electrically connected with the secondliquid metal layer; the backlight module comprises a back frame, a backlight source arranged in the back frame and composed of a plurality of light sources in an arranged mode, a light guiding platearranged on one side of the backlight source and a diffusion plate arranged on the light guiding plate; the liquid crystal display panel is arranged on one side of the diffusion plate. By means of thetouch liquid crystal display device, it can be avoided that an additional electric field for driving liquid crystals is abnormal, and occurrence of the residual image phenomenon is thus avoided.