41results about How to "Reduce convection" patented technology

The invention relates to the technical field of meat product processing, in particular to a meat product sterile processing method and a processing platform thereof, the processing platform comprises a processing shell, a supporting base is arranged at the bottom of the processing shell, a balance placing seat is arranged on the right side of the bottom of the processing shell, and an inner processing transmission device is arranged in the processing shell. According to the meat product sterile processing treatment method and the processing platform thereof, the internal processing transmission device is arranged, the device is provided with the transmission assembly, dehydration operation can be performed during transmission, and the moisture content in the meat product can be remarkably reduced through dehydration, so that the moisture activity is reduced, and the growth and reproduction of microorganisms are inhibited; and when the water activity is lower than the minimum value required by microorganisms, the breeding of the microorganisms is severely inhibited, so that the shelf life of the meat product is prolonged, and the purpose of reducing the decay risk is achieved: the dehydration process is also beneficial to reducing the oxygen content in the meat product, and the risk of oxidative decay is further reduced.

The invention provides an intelligent window with spectrum regulation and control and phase change energy storage functions and a preparation method of the intelligent window, and belongs to the field of door and window equipment. The intelligent window comprises a first high-light-transmittance film, temperature-sensitive gel, a second high-light-transmittance film and a phase change composite material which are sequentially stacked. According to the invention, the temperature-sensitive gel plays a role in spectrum adjustment, before and after phase change, the temperature-sensitive gel is converted from transparent to opaque, the sunlight transmittance is significantly reduced, the light transmittance is significantly reduced when the temperature rises to be close to the phase change temperature of the temperature-sensitive gel, and the entry of solar heat is reduced; the phase-change composite material can absorb heat on the surface of the window, increase thermal inertia of the window, slow down temperature rise of the surface of the window, reduce indoor thermal radiation and convection of the window, release heat at night, delay temperature drop of the window, change from opaque to transparent before and after phase change, and remarkably improve sunlight transmittance. The temperature is continuously reduced at night, high haze is presented, and the privacy protection effect is achieved.

The embodiment of the utility model provides an aerosol generating device. The aerosol generating device comprises a shell; the heating assembly is arranged in the shell and used for heating the aerosol generating product; the power supply and the circuit board are arranged in the shell, and the circuit board is electrically connected with the heating assembly and the power supply to control the power supply to provide power for the heating assembly; the circuit board or the heating assembly or the power supply is fixed on the surface of the bracket, and the circuit board or the heating assembly or the power supply and the shell are arranged at an interval; the support comprises a plurality of separation structures, and the separation structures abut against the shell and form a plurality of independent heat insulation cavities.

The invention relates to the technical field of heat preservation felts, in particular to a mesoporous heat preservation and insulation felt with hydrophobicity and a preparation technology of the mesoporous heat preservation and insulation felt. In order to enhance the heat insulation performance of the heat preservation felt, a mesoporous material is mixed with a hydrophobic modified resin material to enhance the heat preservation and insulation felt; fluorosilicone modified silane is prepared, fluorine elements and silicon elements are introduced into the fluorosilicone modified silane, sulfydryl groups introduced in the reaction process are reserved, the fluorosilicone modified silane further participates in subsequent cross-linking of polyurethane emulsion, the cross-linking degree of the resin is increased, and the physical performance of the resin is improved; the fluorine element and the silicon element are introduced in the process, so that the hydrophobicity of the material can be effectively improved, and the heat insulation capability of the heat insulation felt in a humid environment is improved; on the basis, a mesoporous material is further introduced into the hydrophobic polyurethane emulsion, and the defect that the thermal conductivity is improved due to the fact that the polyurethane emulsion modifies the heat preservation felt is overcome by means of the hollow characteristic of the mesoporous material.

The invention belongs to the technical field of constant-temperature and constant-humidity testing machines, and particularly relates to a multifunctional constant-temperature and constant-humidity testing machine which comprises a machine body, a placement plate and the like. And a plurality of placing plates are arranged in the machine body. According to the invention, the magnetic strip in the groove at the front part of the placing plate adsorbs the counterweight strip I, meanwhile, all the shielding curtains on the roller shutter are also in a put-down state, and the magnetic strip adsorbs the counterweight strip II, so that the shielding curtains and the roller shutter are combined to shield the front part of the machine body, and then a test workpiece is placed in the machine body. According to the constant-temperature and constant-humidity test machine, the test workpieces are borne through the placement plate, the machine body is controlled, so that the interior of the machine body is in a constant-temperature and constant-humidity state, the temperature and humidity in the machine body are detected in real time through the adjusting assembly, and therefore constant-temperature and constant-humidity test on the test workpieces is achieved; therefore, the temperature and humidity change of air in the machine body is reduced.

The invention relates to the field of thermal insulation materials, in particular to a thermal insulation microfiber centrifugal glass wool thermal insulation material and a preparation method thereof, which solves the problem that after acrylic ester in the centrifugal glass wool is bonded to glass fibers, the gaps between the glass fibers are blocked, the irregular gaps are less, and the thermal insulation and sound insulation performance of the centrifugal glass wool is reduced; the invention specifically comprises modified fiber cotton and a porous adhesive, wherein a porogen is used in the adhesive to form interconnected micropores along a porous skeleton at 230-280°C; the application prepares a special adhesive by adding a porogen, which not only ensures the bonding strength between the glass fibers, but also forms microporous channels, thereby enhancing the thermal insulation and heat preservation performance of the glass wool, and does not generate debris to cause harm to the human body.

The utility model discloses a rotating disc type heat exchanger for ultralow-temperature denitration. The rotating disc type heat exchanger comprises a heat exchanger shell, a flue shell, a heat exchange disc, a rotating shaft, a bearing and a driving motor, the flue shell is fixed in the heat exchanger shell, the heat exchange disc is installed in the flue shell, air gaps are reserved between the heat exchange disc and an upper shell plate of the flue shell and between the heat exchange disc and a lower shell plate of the flue shell respectively, a flue gas access pipeline upper connector and a tail gas pipeline upper connector are symmetrically arranged on the flue shell, and the flue gas access pipeline upper connector is connected with the tail gas pipeline upper connector. A flue gas access pipeline lower connector and a tail gas pipeline lower connector are symmetrically arranged on the flue shell lower shell plate; honeycomb-shaped through holes are formed in a disc body of the heat exchange disc, a shaft sleeve is arranged in the middle of the heat exchange disc, the rotating shaft is fixedly installed in the shaft sleeve, bearings are installed at the two ends of the rotating shaft respectively, the bearings are fixed to the heat exchanger shell, and the top end of the rotating shaft penetrates through the bearing at the top and then is connected with the driving motor. Through the mode, the heat exchange efficiency can be obviously improved, and the heat loss of a system is reduced.

The utility model relates to the technical field of sound insulation and heat insulation aluminum alloy doors and windows, in particular to a sound insulation and heat insulation aluminum alloy door and window with heat insulation cavities. The sound insulation and heat insulation aluminum alloy door and window comprises a window sash, the heat insulation cavities are formed in the upper end and the lower end of the window sash, clamping grooves are formed in the upper ends of the interiors of the heat insulation cavities, and C-shaped heat insulation pads are arranged on the outer sides of the clamping grooves in a circle. A first C-shaped heat insulation strip is arranged at the bottom of the C-shaped heat insulation pad; a mounting groove is formed in the middle of the lowermost end of the heat insulation cavity, and the window sash is mounted on the window frame through the heat insulation cavity through the mounting groove; the sound-insulation and heat-insulation aluminum alloy door and window with the heat-insulation cavity has the beneficial effects that the first C-shaped heat-insulation strip and the heat-insulation cavity are arranged at the upper end and the lower end of the heat-insulation cavity at the same time, the heat-insulation cavity reduces transmission of temperature inside and outside a building, and the heat-insulation and heat-preservation performance is improved; and the C-shaped heat insulation pad surrounds the clamping groove.

The invention discloses a preparation method of an oil shale semicoke-based recoverable mulching film, which is characterized in that oil shale semicoke is pretreated through acid etching and calcining processes, so that unstable variable-valence metal ions, organic matters and associated biomass such as carbonate and pyrite in the oil shale semicoke are effectively removed, and the specific surface area of the oil shale semicoke is increased; the subsequent reaction is facilitated; then a magnesium-aluminum hydrotalcite compound is generated on the surface of the pretreated oil shale semi-coke through a hydrothermal reaction method, so that the thermal stability and the cold resistance of the mulching film are enhanced; then a butylbenzene copolymer structure is introduced into the oil shale semicoke, and the butylbenzene copolymer can provide certain thermal isolation in the environment due to low thermal conductivity of the butylbenzene copolymer and reduce convection of heat, so that the mulching film is helped to keep a relatively stable temperature, and the influence of day and night temperature difference on plants is further relieved.

This invention belongs to the field of heat dissipation structure technology, specifically an LED lamp heat dissipation structure. It includes heat dissipation fins, a bottom bracket fixedly connected to the bottom of the heat dissipation fins, and a top bracket detachably mounted on the top of the heat dissipation fins. A cooling fan facing the heat dissipation fins is fixedly connected to the top of the top bracket. The heat dissipation fins include a central ring and fins, with multiple fins arranged in a ring array on the outer circumference of the central ring. An outer peripheral baffle, capable of restoring its original shape, is fixedly connected to the outer end of each fin. The free end of the outer peripheral baffle can abut against the outer end of an adjacent fin, sealing the gap between adjacent fins. In this invention, when the cooling fan is activated, the entire heat dissipation fin forms a four-sided sealed ventilation structure. This effectively improves airflow convection at the LED lamp, reduces airflow convection at gaps, and allows more airflow to directly act on the LED lamp and its surrounding heat dissipation fins, thereby significantly improving heat dissipation efficiency.

The utility model provides a sliding type pet door, and relates to the technical field of pet doors, the sliding type pet door comprises a telescopic plate assembly, a sliding door upper door and a sliding door lower door, the telescopic plate assembly is arranged at the top of the sliding door upper door, the sliding door upper door is located at the top of the sliding door lower door, and the sliding door upper door and the sliding door lower door are fixedly connected through two sets of connecting rods; the sliding door upper door comprises upper door glass, an upper door frame is formed by combining two sets of upper door side stand columns and two sets of transverse stand columns on the periphery of the upper door glass, the upper door glass is fixedly connected with the upper door frame through upper glass sealing strips, and the upper glass sealing strips surround the periphery of the outer side of the upper door glass. The sliding door lower door is a lower door frame formed by combining two sets of lower door side stand columns and a base, and lower door glass is arranged in the middle of the upper end of the lower door frame. According to the sliding type pet door, convenience is provided for installation and use of the pet door, and in addition, the sliding type pet door further has the heat preservation effect.

The utility model relates to the technical field of drying equipment, and discloses an air heater positioning device for square bottom valve bag production, which comprises a machine body, a hot air mechanism is fixedly mounted on the outer wall of the top of the machine body, and an air blowing pipe is fixedly mounted at the output end of an air heater and penetrates through the inner wall of the top of the machine body. A mounting base is fixedly mounted on the inner wall of the top of the machine body, and a drainage mechanism is arranged at the bottom of the mounting base. By arranging a drainage mechanism, a driving motor is started while a hot-air blower is started, and a rotating cylinder with an open bottom is matched, so that hot airflow moving near the inner surface of the rotating cylinder can be influenced by a drainage belt and a flow dividing belt to move towards the horizontal direction at a certain speed; therefore, hot air blown out of the radial rotating cylinder has a large diffusion range, the hot air speed in the vertical direction is reduced to a certain degree, air convection generated when hot air blowers are arranged on the upper side and the lower side of the machine body is reduced, and the drying efficiency of the device is improved.

The invention discloses a protection and disassembly optimized reboiler and a use method, the reboiler comprises a reboiler body, the reboiler body is connected with a conveying pipe through a connecting pipe, and the joint of the conveying pipe and the connecting pipe is provided with a limiting groove; a sealing strip is arranged between the limiting grooves in the two sides, the sealing strip is of an annular structure, and sealing dismounting mechanisms are symmetrically arranged along the outer side of the annular structure and used for controlling mounting and dismounting of the sealing strip, the conveying pipe and the connecting pipe; the reboiler body is used for forming a stable heat exchange condition and ensuring efficient heat transfer. The device has the advantages of being efficient in protection performance, excellent in sealing performance, convenient to disassemble and assemble, capable of optimizing fluid transmission performance and high in structural stability, and the safety, energy efficiency and maintenance convenience of the device are remarkably improved.

The electric steamer comprises a base with a water storage cavity and a juice receiving disc detachably arranged on the base, a heating piece is arranged in the base, the juice receiving disc is provided with a steam exhaust port, the juice receiving disc is provided with a first water insulation rib extending downwards and a second water insulation rib located on the inner side of the first water insulation rib, and the second water insulation rib is located on the inner side of the first water insulation rib. The water storage cavity is divided into a water supplementing cavity and a heating cavity by the first water insulation rib, the heating piece is used for heating water in the heating cavity to generate steam, the second water insulation rib is located in a heating area of the heating piece and divides the heating cavity into a steam cavity and an air water blocking cavity, and the bottom end of the air water blocking cavity is open to be communicated with the steam cavity; and the steam cavity is communicated with the steam exhaust port. Through the arrangement of the air water blocking cavity, the heating water amount in the heating cavity can be reduced, the steam generation rate is increased, the cooking time is shortened, the user experience is pleasant, and the air water blocking cavity surrounds the air heat preservation layer on the inner side of the steam cavity, so that the heat preservation effect on water and steam in the steam cavity can be achieved, and the heat loss in the steam cavity is reduced.

The utility model belongs to the technical field of automobile parts, and provides an element heat dissipation structure which comprises a heat conduction substrate installed on an element, the top of the heat conduction substrate is provided with a plurality of grooves arranged in parallel, each groove is internally provided with a phase change heat conduction layer, the back face of the heat conduction substrate is provided with a plurality of first-level fins distributed in parallel at intervals, and the first-level fins are arranged in parallel at intervals. Secondary fins are arranged between the opposite surfaces of every two adjacent primary fins, the secondary fins are obliquely arranged, a flow guide channel is formed between every two secondary fins, and an airflow guide cover is arranged at the top of the heat conduction substrate; according to the utility model, by arranging the heat dissipation device, heat dissipation can be carried out on elements with insufficient heat dissipation, so that the situation that the temperature of the elements is too high is effectively avoided, and the safety is improved.

The utility model relates to the field of sanding rooms, in particular to an anti-explosion sanding room which comprises a room body, a workshop is formed inside the room body, a spacing layer is arranged on the room body, a dust collection notch is formed in the room body, a dust collection cover is arranged on the room body, a dust removal pipeline is connected to the dust collection cover, an anti-explosion isolation valve is arranged at one tail end of the dust removal pipeline, and the anti-explosion isolation valve is connected with an anti-explosion dust remover. An air outlet of the explosion-proof dust remover is connected with a centrifugal fan, a ventilation interlayer is formed in the workshop, a ventilation notch is formed in the room body, a ventilation hood is arranged on the room body, the ventilation hood is connected with a ventilation pipeline, and one tail end of the ventilation pipeline is connected with an air blower. And the ventilation interlayer and the air blower improve the heat dissipation effect of the side wall of the room body, air convection is formed in the workshop, fire blast caused by too high dust concentration in the workshop is prevented, and the safety and comfort of the working environment in the room body are improved.

The utility model discloses a warm-keeping and heat-storing ultra-light nylon fabric, and relates to the technical field of textiles. According to the technical scheme, the warm-keeping insole is characterized by comprising an inner layer and an outer layer which are fixedly connected with each other, a plurality of warm-keeping pieces are fixedly connected to the side, close to the inner layer, of the outer layer, a plurality of warm-keeping grooves are formed in the warm-keeping pieces, and the warm-keeping pieces comprise a plurality of ceramic powder. One side, close to the outer layer, of the inner layer is fixedly connected with a contact piece which is the same as the warm-keeping piece in relative position, and the width of the contact piece is larger than that of the warm-keeping piece. And by utilizing the characteristics of the nylon fibers, the heat retention property of the fabric is ensured, and meanwhile, the fabric has the characteristic of portability.

The application discloses a kind of pore intelligent regulation weft knitted fabric, including face yarn and ground yarn, the face yarn with the ground yarn is interwoven by plating weft knitting process, forms fabric body, in the process front of fabric body, by the face yarn constitute several regular distribution pore regulation unit;The pore regulation unit is in dry state, present closed or shrinkage form;In hygroscopic state, the pore regulation unit expands, forms the air-permeable channel in the thickness direction of fabric body.The application utilizes the "moisture absorption axial elongation, radial shrinkage and twist to high humidity side" characteristics of face yarn in heat and humidity response yarn, and cooperates with the size stable support of ground yarn, gives the dynamic pore regulation ability of fabric body;When human perspires, face yarn absorbs moisture and elongates and twists, pore regulation unit actively expands, forms three-dimensional air-permeable channel, enhances heat dissipation and moisture removal;After drying, yarn restores, pore closes to reduce air convection to keep warm.

The utility model discloses a cooking utensil, which belongs to the technical field of cooking utensils, and comprises a heating base, a pot body and a pot cover, the pot body is placed on the heating base, the pot cover is covered on the pot body, a water tank is arranged in the heating base, an energy gathering ring is arranged in the water tank, and a first heating device is arranged below the water tank and corresponds to the inner side of the energy gathering ring. A closed heat insulation cavity is formed in the ring wall of the energy-gathering ring, the water tank and the energy-gathering ring are arranged at intervals, and a water inlet sunken part used for communicating the inner side and the outer side of the energy-gathering ring is arranged at the bottom of the water tank and / or the bottom of the energy-gathering ring. The cooking utensil has the advantages that the heat insulation performance of the energy gathering ring is improved, the steam generation efficiency of the cooking utensil is improved, and the preheating time is shortened.

The invention relates to the technical field of building thermal insulation materials, and provides a fireproof rock wool thermal insulation board for buildings and a preparation method of the fireproof rock wool thermal insulation board. A fireproof rock wool insulation board for a building comprises a tensile fireproof layer, a bonding layer and an insulation fireproof layer which are sequentially arranged from top to bottom. The tensile fireproof layer comprises the following raw material components in parts by weight: 75-85 parts of rock wool fibers, 9-12 parts of a reinforcing agent and 3-5 parts of a water repellent; the reinforcing agent comprises chopped glass fibers and hydroxyl-terminated polycaprolactone in a mass ratio of 8: (1-2); the raw material of the bonding layer comprises water-based phenolic resin; the heat-preservation fireproof layer is prepared from the following raw material components in parts by weight: 75 to 80 parts of rock wool fiber, 5 to 10 parts of aluminum hydroxide, 3 to 5 parts of magnesium hydroxide and 2 to 5 parts of diatomite. Through the technical scheme, the problem of low tensile strength of the rock wool insulation board in the related technology is solved.

The utility model relates to an anti-crack heat preservation outer wall, including wall base, primer layer, mortar outer wall layer, imitation stone paint finish layer, imitation stone paint middle coating, be equipped with anti-crack heat preservation structure between mortar outer wall layer and imitation stone paint middle coating, its anti-crack heat preservation structure includes the curved plate and middle baffle, the curved plate is divided into multiple groups and is arranged through linear array, and the middle baffle is inserted into the curved plate, the middle baffle is hollow in the middle, and the rock wool filling layer is filled in the hollow, and secondly, the anti-crack heat preservation structure between mortar outer wall layer and imitation stone paint middle coating fills the heat preservation mortar and covers the curved plate, the middle baffle, the utility model solves the problem that the existing anti-crack heat preservation outer wall has the problem that the insufficient supporting force causes the poor anti-crack effect, and the heat preservation effect cannot be improved.

The utility model discloses a kind of flow guide structure and single crystal furnace applied to single crystal furnace hot field.The flow guide structure can include: flow guide cylinder and flow guide component, wherein, flow guide component includes first flow guide part and second flow guide part, first flow guide part extends from the outer periphery of the lower end opening of flow guide cylinder in the direction of radial away from the central axis of flow guide cylinder and simultaneously downwardly inclined relative to the lower end opening outer periphery of flow guide cylinder, second flow guide part extends from the extension end of first flow guide part in the direction of radial away from the central axis of flow guide cylinder and simultaneously upwardly inclined relative to first flow guide part.The flow guide structure can accelerate the argon flow rate passing through liquid surface, to take away more oxygen impurities, reduce the oxygen content of drawn single crystal silicon rod.

This invention belongs to the field of directional solidification of high-temperature alloys, and provides an engineering-applicable anti-gravity effect single-crystal high-temperature alloy directional solidification growth device and its application, which reduces the formation of interdendritic segregation, avoids the formation of defects such as freckles, and meets the actual needs of high-temperature alloy directional solidification blade preparation. The device structure is as follows: a vacuum induction furnace is set at the bottom of the device, and a crucible is placed inside it. The crucible is located on a crucible lifting mechanism, and a graphite holding furnace is set above the crucible. A pulling mechanism is set at the top of the device, and a water-cooling plate is set below it. The top of the mold shell has a seed crystal mounting port for installing the seed crystal, and the bottom has an alloy liquid inlet. After the mold shell and the seed crystal are assembled, they are fixed on the water-cooling plate by a fixing clamp. The device also includes a heat insulation baffle and a vacuum system. The heat insulation baffle with through holes is set parallel to the crucible above the graphite holding furnace, and the inner diameter of the through holes of the heat insulation baffle is 10-20 mm larger than the maximum outer diameter of the mold shell.

This invention relates to the field of carbonaceous material reactor technology, specifically to a slag melter, comprising: a combustion aid distribution ring, which is a pipe arranged in a ring around the outer periphery of a discharger; a first pipe connected to the combustion aid distribution ring to introduce combustion aid; a gas-liquid fuel distribution ring, which is a pipe arranged in a ring around the outer periphery of the discharger; a second pipe connected to the gas-liquid fuel distribution ring to introduce gas-liquid fuel; multiple burners connected to both the combustion aid distribution ring and the gas-liquid fuel distribution ring; the multiple burners generate flames and high-temperature flue gas, which, in conjunction with the discharger, agitate, mix, oxidize, heat, and lift inorganic residues to produce molten liquid inorganic residues; this application distributes gas-liquid fuels and combustion aids as needed, fully mixes and combusts them, generates a stable high-temperature flame to agitate the inorganic residues according to operational needs, and adjusts the temperature of the inorganic residues, maintaining the slag level of the inorganic residues and ensuring smooth discharge.

The present invention relates to the technical field of fabrics, specifically to an anti-pilling thermal insulation fiber fabric and a preparation method thereof. The anti-pilling thermal insulation fiber fabric comprises an inner fabric, an outer fabric and a filling layer filled between the inner fabric and the outer fabric, wherein the inner fabric is made by knitting a blended yarn of acrylic fiber and cotton fiber, wherein the acrylic fiber is modified, and the acrylic fiber is sequentially reacted with a sodium hydroxide aqueous solution, dichlorothionyl, polyaminopropyl biguanide and methyl iodide, and the prepared modified acrylic fiber contains biguanide groups and quaternary ammonium salts, so that the acrylic fiber not only has excellent antibacterial properties, but also has good antistatic properties. The fabric prepared by the present invention not only has excellent warmth retention and anti-pilling properties, but also has good antibacterial and antistatic properties, and can be made into close-fitting clothing, which has both warmth retention, comfort, aesthetics and safety.

The utility model belongs to the field of sauce processing provides a kind of sauce three-dimensional heating cooking equipment, including cooking jar, the side wall of cooking jar is fixedly connected with feed pipe, the lower surface of cooking jar is fixedly connected with discharge pipe, the circumferential surface of cooking jar is fixedly installed with several evenly distributed heating fins, the two side walls of cooking jar are fixedly installed with support frame, the upper surface of support frame is fixedly installed with fixed column;The utility model can be heated by the side wall to sauce material by the several evenly distributed heating fins set in the circumferential surface of jar body, so that the heating in jar body is more uniform, while the stirring effect of equipment is improved by the variable pitch helical blade set, cooperate the use of stirring fin, while the sauce material adhered to the inner side wall of jar body can be stirred in the stirring process by the gear ring and scraper etc. set, reduce the problem that sauce material adheres in jar body and causes it to appear scorched, also can clean the inside of jar body after cooking.

The present invention relates to the technical field of wire and cable extrusion processing, and discloses a cable multilayer extrusion processing equipment, comprising a first extrusion component, a cooling component and a second extrusion component arranged in sequence along a first direction, and the cable to be processed passes through the first extrusion component, the cooling component and the second extrusion component in sequence, wherein: the cooling component comprises a liquid storage tank and an aeration mechanism, the liquid storage tank is used to store cooling water, and the cable to be processed is immersed in the cooling water when passing through the liquid storage tank; the output end of the aeration mechanism is arranged on the inner side of the bottom wall of the liquid storage tank, and a plurality of aeration holes facing the cable to be processed are arranged thereon. The cable multilayer extrusion processing equipment can evenly and quickly cool the extruded material on the surface of the wire and cable, avoid the generation of internal stress that affects the mechanical properties and surface quality of the extruded material, and at the same time improve the adhesion of the extruded material during the re-extrusion processing.

The invention relates to the technical field of fabric preparation, in particular to a warm-keeping antibacterial air layer fabric and a preparation process thereof. The air layer fabric is formed by weaving a flexible lining gray fabric and an air layer gray fabric; the flexible lining grey cloth is obtained by spinning mulberry silk, tussah silk and castor silk through a spinning machine; the air layer grey cloth is obtained by weaving terylene, spandex and cloth conductive fibers in a seven-way air layer structure; antibacterial master batches are loaded on the surfaces and the interiors of the flexible lining gray fabric and the air layer gray fabric, and the distribution density of the antibacterial master batches is 35-60 g / m < 2 >; the preparation technology comprises the following steps of S1, weaving, S2, blank fixing, S3, dyeing, S4, drying, S5, shearing and S6, shaping. According to the configuration mode, the polyester, the spandex and the cloth conductive fibers are designed into an air interlayer by adopting a special structure, and the fabric has warm-keeping and antibacterial capabilities on multiple layers through seven-way configuration, so that the warm-keeping and antibacterial effects of the fabric are further optimized.

The utility model relates to the technical field of liquefied petroleum gas steel cylinders, and discloses a moisture-proof and rust-proof double-layer liquefied petroleum gas steel cylinder which comprises an outer shell, a cylinder body is fixedly connected to the inner wall of the bottom of the outer shell, a connecting pipe is fixedly connected to the top of the cylinder body, and a gas inlet pipe is fixedly connected to the middle of the right side of the connecting pipe. A fixing ring is fixedly connected to the interior of the air inlet pipe, fixing columns are fixedly connected to the top and the bottom of the left side of the fixing ring and sleeved with springs, a limiting plate is fixedly connected to the top end of the left side of each fixing column, and a pressure plate is slidably connected to the exterior of each fixing column; and the top of the outer-layer shell is fixedly connected with a lifting assembly. According to the gas steel cylinder, the problem that after petroleum gas is injected into the gas steel cylinder, the petroleum gas injected into the gas steel cylinder can run out within the period of time when the valve is rotated to seal the interior of the gas cylinder cylinder can be solved.

The utility model provides an LED driving control device, and belongs to the technical field of driving devices. Comprising a mounting plate, a protective shell is fixedly connected to the mounting plate through bolts, a protective cover is rotationally connected to the protective shell through hinges, a plurality of first heat dissipation holes and second heat dissipation holes are formed in the two sides of the protective shell respectively, a pair of buckles is fixedly connected to one side of the protective cover, a limiting hole is formed in each buckle, and the first heat dissipation holes and the second heat dissipation holes are arranged in the limiting holes. And one side of the protective shell is fixedly connected with a pair of fixing plates. Through the arrangement of the protective cover, when a user finds that the whole driving device needs to be overhauled, the limiting rod can be pulled to enable one end of the limiting rod not to be clamped with the limiting hole, and then the protective cover is rotated to open the protective cover to completely expose the electrical components in the protective shell, so that the electrical components on the mounting plate can be overhauled conveniently and quickly; and the protective shell does not need to be detached, so that the convenience of overhauling the driving device on the use site is improved.