78results about How to "Avoid high temperature damage" patented technology

The invention discloses an SMT low-temperature manufacture procedure of an LED light bar. The SMT low-temperature manufacture procedure comprises the following steps that (1) low-temperature solder paste is pasted on an FPC board by adopting a metal stencil printing way; (2) LED light beads are accurately placed on the FPC board by an SMT mouter; and (3) the operating temperature of a reflow soldering machine is adjusted, so that the temperature zone of the reflow soldering machine is below 180 DEG C, and the low-temperature solder paste is heated by the reflow soldering machine until the low-temperature solder paste is melted so as to enable the LED light beads to be welded on the FPC board to manufacture the LED light bar. The SMT low-temperature manufacture procedure is concise in process, and high in working efficiency; the low-temperature solder paste is adopted ingeniously, and the temperature zone of the reflow soldering machine is controlled reasonably to be below 180 DEG C, so that the phenomenon that the LED light beads are damaged at high temperature is avoided, the quality of the LED light bar is effectively ensured, and the STM production process requirements are met; and besides, a PET material is adopted, so that the SMT low-temperature manufacture procedure is more favorable to be realized, the production efficiency is improved greatly, manpower and material resources are saved, the production cost is reduced, and the SMT low-temperature manufacture procedure is beneficial for wide popularization and application.

The invention provides alpha-cyanoacrylate heat-conducting glue. The alpha-cyanoacrylate heat-conducting glue comprises the following components in parts by weight: 100 parts of alpha-cyanoacrylate, 2-5 parts of a thickening agent, 2-4 parts of a plasticizer, 0.1-0.4 parts of a stabilizing agent, 0.5-1 part of a polymerization inhibitor, 20-30 parts of a cross-linking agent, 3-6 parts of a fire retardant, 1-2 parts of pigment, 100-110 parts of a heat-conducting filling material, 10-14 parts of magnesium hydrogen phosphate, and 8-10 parts of liquid polyisobutylene. The invention also provides a preparation method of the alpha-cyanoacrylate heat-conducting glue. The alpha-cyanoacrylate heat-conducting glue has good impact-resistance performance and heat-resistance performance.

The invention discloses a drilling machine with cooling mechanism for hardware machining. The drilling machine includes a base, wherein the upper surface of the base is fixedly connected with the lower surface of a first connecting plate through a first electric push rod, and a first sliding device is fixedly connected to the left side surface of the first connecting plate. The bottom end of the first sliding device is fixedly connected to the upper surface of the base, a second sliding device is fixedly connected with the left side surface of the first sliding device, and the left side surface of the first sliding device is fixedly connected to the right side surface of the second connecting plate through a second electric push rod. Through the combined action of a water suction pump, a water delivery hard pipe, a condenser, a hosepipe, a water body shower nozzle and a water storage box, the drilling machine with cooling mechanism for hardware machining realizes the cooling of workpieces and workpiece drill bits, avoids the situation that the workpiece drill bits are damaged due to high temperature, ensures the service life of the workpiece drill bits, and avoids the situation that workers frequently replace the workpiece drill bits.

The invention relates to selenium-rich flaxseed mushroom sauce and a preparation method thereof. Flaxseed kernel pulp, flaxseed oil, selenium-rich pleurotus eryngii, seasonings, prebiotics and a compound antioxidant cooperate; mushroom particles and the flaxseed kernel pulp are respectively prepared by using the proper preparation method, the over-high temperature during the preparation process isreduced, and sterilization filling is performed in a low-temperature plasma sterilization manner so as to ensure that alpha-linolenic acid in a finished product is not damaged by the high temperatureand has good taste, good quality and good nutritional value. According to the invention, the flaxseed oil is used as main oil of the mushroom sauce, a low-temperature plasma sterilization technologyis adopted, the composite antioxidant is prepared to prevent oxidative deterioration of the linseed oil and prevent the alpha-linolenic acid from being damaged by high temperature; and the selenium-rich flaxseed mushroom sauce which is prepared by using flaxseed kernels and the selenium-rich pleurotus eryngii as main raw materials and is prepared through a special process is delicious in taste, unique in flavor, rich in the alpha-linolenic acid and has high nutritional value.

The invention discloses a method for producing all-vitamin mineral oral liquid by microorganism fermentation. The method includes the steps: selecting strains; adding mineral substances in a classified manner by multistage fermentation; determining tank switching and fermentation end points according to the growth density, the form and the pH (potential of hydrogen) index of the strains; adding vitamins into a fermentation tank after three-stage fermentation; sterilizing the oral liquid; filling the oral liquid and the like. By means of microorganism liquid fermentation, enrichment and transformation, various mineral substances and vitamins essential to human bodies are added into a culture medium in the classified manner according to a certain regularity, microorganisms absorb and transform inorganic mineral elements in the growing process and are in an organic form, and antagonism and competition of the mineral substances are avoided by means of multistage addition and fermentation. The healthcare function of the microorganisms is increased, and the method has higher development and application values and fine economic and social benefits.

The invention discloses through-hole reflow soldering equipment. The equipment comprises a machine platform; the machine platform comprises three temperature zones including a first temperature zone,a second temperature zone and a third temperature zone in the horizontal direction; each temperature zone is separated into an upper furnace cavity and a lower furnace cavity along a conveying track in the vertical direction; a heat insulation device is arranged between the upper furnace cavity and the lower furnace cavity of each temperature zone and is used for stopping air flowing of the lowerfurnace cavity and the upper furnace cavity; the upper furnace cavity of the first temperature zone delivers room-temperature air, and the lower furnace cavity delivers low-temperature hot air; the upper furnace cavity of the second temperature zone delivers cold air treated by a condensing system, and the lower furnace cavity delivers high-temperature hot air; and the upper furnace cavity of thethird temperature zone delivers the cold air treated by the condensing system, and the lower furnace cavity delivers the room-temperature air. The equipment is applicable to the PCB through hole soldering technology, the temperature difference of the upper and lower furnace cavities is ensured to be in the control range, and the soldering effect is better.

The thermoelectric facility contains a thermoelectric generator (212) which is thermally connected on a first side to a heat source (217) and on a second side to a heat sink (211). The thermoelectric facility also has means for limiting the temperature on the thermoelectric generator (212). Said means comprise a first compartment (214), filled with a first working medium (218) that can melt, which compartment is connected across a large surface thereof to the heat source (217) or to a second compartment (221) that is filled with an evaporable second working medium (222). The second compartment (221) is connected to the thermoelectric generator (212) on its side facing away from the first compartment (214). The working media (218, 222) have a predetermined melting point (TL) or boiling point (TS) in order to prevent permanent damages to the thermoelectric generator (212).; The thermoelectric facility is especially useful for motor vehicles that are operated by an internal combustion engine.

The invention belongs to the technical field of medicine, and particularly discloses a method for producing high-purity propofol. The method includes the steps that a propofol crude product serves as a raw material and is separated and purified with a three-stage distillation method; the propofol crude product enters a feeding tank protected by nitrogen and is input into a first-stage film distiller through a pump to be dehydrated and degassed; then the product enters a second-stage molecular distiller, and low-boiling-point impurities are removed; finally, the processed product is input into a third-stage molecular distiller through the pump, high-boiling-point impurities are separated, and the colorless or yellowish high-purity propofol is obtained. The method is simple in technology, easy to operate, convenient and rapid, oxidation can be effectively prevented, the content of toxic oxide impurities E and the content of toxic oxide impurities J are decreased, the quality and the safety of the propofol are improved accordingly, the distillation temperature is low, separating efficiency is high, energy is saved, and the method is environmentally friendly and suitable for mass production and meets the requirement of continuous integration production.

The invention discloses a device and method for stopping to convey cigarette bars as well as a cigarette packer. The device comprises a cigarette bar detecting unit and a cigarette bar conveying mechanism, wherein the cigarette bar conveying mechanism comprises a slide base mechanism and a fixed base mechanism which are oppositely arranged at the two sides of a cigarette bar channel; the slide base mechanism comprises a slide base, a slide base drive unit and a first conveyor belt assembly mounted on the slide base; the first conveyor belt assembly comprises a first belt wheel and a first transmission belt; the fixed base mechanism comprises a base and a second conveyor belt assembly mounted on the base; and the second conveyor belt assembly comprises a second belt wheel and a second transmission belt. After the cigarette packer stops, the device for stopping to convey the cigarette bars conveys the cigarette bars in a transparent paper reshaping device to leave the transparent paper reshaping device through the cigarette bar conveying mechanism, so that the cigarette bars, which are not timely taken out in the transparent paper reshaping device, are effectively prevented from being damaged at a high temperature.

The invention belongs to the field of dairy products, and specifically relates to a coconut aroma purple rice pudding preparation method, which comprises: adding raw and fresh milk to a material preparing tank, heating, adding defatted powder and water under an effect of a shear, heating, adding white granulated sugar, diluted cream, maltodextrin, coconut pulp raw powder, gelatin and modified starch, shearing until no particle exist, completely mixing the materials, cooling the blended materials, adding strawberry jam and the remaining raw and fresh milk, stirring so as to completely mix the milk nutrients and avoid damage on nutrients due to high temperature, homogenizing the materials, carrying out ultra high temperature short time sterilization, blending flavor, adding purple rice jam to stir to make the purple rice aroma be pure, and carrying out filling, testing and warehousing. The coconut aroma purple rice pudding produced by using the technical scheme has characteristics of rich nutrition, high protein content, and provision of a variety of vitamins, calcium, iron, zinc and other trace elements required by human body, and has effects of blood nourishing, qi benefiting, kidney strengthening, liver enriching, disease resistance improvement and the like.

The invention provides a circulating cooling device of a wind power doubly-fed generator, relates to the technical field of wind power generation, and aims to solve the problem of low heat dissipation efficiency of an existing wind power doubly-fed generator. The circulating cooling device of the wind power doubly-fed generator comprises a base, a water tank and a water pump, wherein the water tank and the water pump are arranged on the base, the water tank is provided with a water inlet and a water outlet, a water supply pipe is communicated between the water inlet and the water outlet, and the water pump is installed on the water supply pipe and configured to pump water in the water tank out of the water inlet and circularly enter the water tank through the water outlet; the water supply pipe is provided with a cylinder, and the cylinder is configured to accommodate an engine body of the wind power doubly-fed generator; a first rotating shaft is arranged in the water tank, and stirring blades are fixedly arranged on the circumferential surface of the first rotating shaft; and a ventilation opening is formed in the position, which is close to the top, of the water tank and communicated with the water inlet, and a heat dissipation element is installed at the ventilation opening. The heat dissipation efficiency of the wind power doubly-fed generator can be improved.

The invention discloses a liquid-hydrogen temperature zone vibration test heat insulation method for a cold-helium pressurization system of a rocket tank. Adopted devices and materials are mainly a stainless-steel box, support fasteners, a polyurethane heat insulating material and electromagnet protective covers. The implementation process of the method is as follows: the stainless-steel box is installed on a horizontal slide platform of a vibration platform; the support fasteners are installed in the stainless-steel box; specific installation distances from all elements of the pressurization system and the center of a pipe to the bottom part of the stainless-steel box are ensured and the surfaces of the pipe and the elements of the pressurization system are each wrapped with a layer of plastic film; the electromagnet protective covers cover cold-helium electromagnetic valves and then the stainless-steel box is filed with the polyurethane heat insulating material and after the heat insulating material is cured, the electromagnet protective covers are taken out; and after heat dissipation of the heat insulating material is completed, a vibration test heat insulating protection work of the pressurization system is completed. Overall heat insulating processing is carried out on the pressurization system so that installation and operation of the system are facilitated and a heat insulating processing procedure of system elements is simplified so that a system heat insulating effect is improved and contact of the vibration platform with low-temperature media is prevented and at the same time, heat dissipation demands in a work process of electromagnets of the cold-helium electromagnet valves.

The invention discloses an anti-twisting cable with high mechanical strength. The anti-twisting cable with the high mechanical strength comprises an outer protecting jacket (1), an inner protecting jacket (3), cable protecting jackets (4) and cable cores (5), wherein the inner surface of the outer protecting jacket (1) is provided with a plurality of grooves A; the outer surface of the inner protecting jacket (3) is provided with grooves B corresponding to the grooves A one to one; the grooves A cooperate with the grooves B to form cavities; reinforcements (2) are mounted in the cavities; the outer side of the outer protecting jacket (1) is provided with an armoring layer (8); the outer side of the armoring layer (8) is coated with a cooling coating layer; a central reinforcement (9) is arranged in the inner protecting jacket (3). The anti-twisting cable with the high mechanical strength has the beneficial effects that, according to the anti-twisting cable with the high mechanical strength, the outer protecting jacket and the inner protecting jacket can be prevented from generating relative rotation through using the reinforcements; thus, the anti-twisting ability is improved; the wear generated between the inner protecting jacket and the outer protecting jacket is avoided; through arranging the reinforcements, the mechanical strength of the anti-twisting cable with the high mechanical strength can be also increased; through arranging the armoring layer, the mechanism strength of the cable can also be increased; the anti-erosion ability is improved; the service life of the cable is prolonged.

The invention discloses a large-size anti-warping 3D printing flexible bottom plate with an easy-to-take part and a using method thereof. According to the printing bottom plate, a cured flexible colloid is loaded in a container, printing material particles are laid on the surface of the cured flexible colloid, and an additive manufacturing process is carried out on the printing material particles.The whole printing bottom plate does not need to be heated, so that energy conservation and environmental protection are achieved; the surface material of the bottom plate and the printing material are the same material, and the surface particles and the surface material in a molten state have a good bonding effect; after printing is completed, the part is convenient to take; the base plate can be repeatedly repaired and used, and the cost is low; the shape of the base plate can be changed along with the shape of a workpiece 4, so that material waste is avoided to the maximum extent; the bottom plate is formed by compounding a plurality of materials, and the surface material of the bottom plate is a raw material consistent with the printing material so as to meet the requirements of materials with different printing temperatures; and the flexible bottom plate is beneficial to release of internal stress in the printing process, and cracking caused by stress concentration can be effectively prevented.

The invention discloses a method for extracting a plant bacteriostat. The method comprises the following steps: 1, mixing quartz sands with fallen poplar leaves according to a mass ratio of 1:(2-7), and crushing the obtained mixture to form a powder; and 2, uniformly mixing the powder obtained in step 1 with water according to a mass ratio of 1:(190-210), immersing the powder for 22-26 h, carrying out 38-42 DEG C water bath heating for 2-4 h, and centrifuging the heated solution to obtain a supernatant which is the plant bacteriostat. The method has the advantages of high efficiency, simplicity, low cost, guaranteeing of full dissolving of the plant bacteriostat, and avoiding of the antibacterial components of the plant bacteriostat from being destroyed by a high temperature; and the extracted plant bacteriostat has an antibacterial effect, and can be used to substitute a chemical bacteriostat in order to reduce the pollution of the chemical bacteriostat to the environment.

The invention provides a liquefied gas carrier deck liquid cargo system support base plate installation precision management and control process. The process includes the steps that the field installation precision is guaranteed by controlling the precision of the deck support base plate installation line; in an overall composition carrying stage, a total station is used for measuring a block support base plate and a unit support, support measurement data are matched with block support base plate data in a simulation mode, and the support base plate with large simulation deviation is correctedin advance, so that the alignment precision of the block support base plate and the support is guaranteed; and in a block carrying stage, the relative position relation between a block center and a block head-tail direction is mainly controlled, so that the liquefied gas carrier deck liquid cargo system support base plate installation precision can be guaranteed. According to the liquefied gas carrier deck liquid cargo system support base plate installation precision management and control process, through the control and the advanced measurement and correction of each stage from installationto being conveyed to a carrier of the deck support base plate in the process, the precision of a support web plate after being conveyed to the carrier is guaranteed, and the problem of support base plate trimming caused by dislocation of the support web plate and the base plate when the deck liquid cargo system unit support is hoisted and positioned is avoided.

The invention relates to an acidic tail gas absorption tower in oxalic acid production and a method for absorbing oxalic acid tail gas, and belongs to the field of environmental protection. According to the technical scheme, the acidic tail gas absorption tower in oxalic acid production comprises a sealed tower body, a plurality of layers of ventilating plates are arranged in the tower body, a tail gas inlet is formed in the lower portion of the tower body, a tail gas outlet is formed in the upper portion of the tower body, and the ventilating plates are fixed into the tower body. A plurality of air holes are evenly distributed in the ventilating plates, an overflow hole is formed in one side of each ventilating plate, one circle of the overflow holes is higher than the upper side faces of the ventilating plates, an absorption liquid inlet is formed in the upper portion of the tower body, an absorption liquid outlet is formed in the lower portion of the tower body, a heat exchange device is arranged at the bottom of the tower body, and the two ends of a circulating pipeline are connected into the top and the bottom of the tower body respectively.

The present invention discloses a traditional Chinese medicine powder for treating infantile oral ulcer of wind-heat spleen type. The traditional Chinese medicine powder is prepared from the materials of tree peony bark, radix paeoniae rubrathe, golden cypress, herba taching, radices trichosanthis, Eucalyptus globulus Lab., honeysuckle, Dichocarpum auriculatum, forsythia, rhizoma curcumae longae, dahurian angelica root, smalltooth gomphostemma root, purslane, prepared radix glycyrrhizae, jackfruit, pineberry, Ligusticum wallichii, root, tschonosk trillium rhizome and flos daturae. The powder employs pure traditional Chinese medicines in appropriate compatibility, and is prepared by modern advanced medicine pharmaceutical technology, has the significant advantages of simultaneous treatment of principal and subordinate symptoms, rapid onset, effective alleviation of the suffering of patients, safety and no toxic or side effects. The traditional Chinese medicine powder is especially applicable to children, and effectively avoids the problems of drug resistance and toxicity caused by antibiotics in treatment.

The invention relates to the technical field of rock drilling equipment, in particular to a drilling device for stone mining. The drilling device comprises a vehicle body, a lifting structure is mounted on the vehicle body, an adjusting structure is mounted at the top end of the lifting structure, a propelling structure is arranged at the upper end of the adjusting structure, and a punching structure is mounted at the front end of the propelling structure. A heat dissipation structure is arranged at the end, close to the punching structure, of the propelling structure, a maintenance structure is arranged at the top end of the propelling structure, a pressure relief structure is arranged in the maintenance structure, and a cleaning structure is arranged at the front end of the maintenance structure. The lifting structure is installed at the top end of the vehicle body, stone of different heights can be drilled, the stone can be drilled at different angles in cooperation with the adjusting structure, holes of different depths can be drilled in cooperation with the propelling structure, and therefore stone mining work can be conveniently carried out.

The invention relates to the technical field of big data, and further discloses big data server equipment for improving the data transmission stability. The big data server equipment includes a base,telescopic columns are arranged at the left part and the right part of the upper part of the base, and a case is arranged above the telescopic columns; the left side of the case is fixedly connected with a driving box; a bearing is arranged on the lower portion of an inner cavity of the driving box, a solenoid is fixedly inserted into the middle of the bearing, a first spring is arranged on the upper wall of the inner cavity of the driving box, an iron core is fixedly connected to the lower end of the first spring, a thin plate is arranged at the lower end of the iron core, and transverse rodsare fixedly inserted into the upper portion and the lower portion of the inner cavity of the case. According to the big data server equipment capable of improving the data transmission stability, a lantern ring is arranged to attract a mouse to tread, then the lantern ring rotates to enable a solenoid to wind a coil, the magnetic field intensity is increased, an iron core descends to repel the mouse, and a dry powder box is arranged in a matched mode, so that the effects of protecting a case circuit and preventing high-temperature damage of a hard disk are achieved.

The invention discloses a high temperature pipeline heat insulation wall-penetrating structure and a folding sleeve thereof. The high temperature pipeline heat insulation wall-penetrating structure comprises the folding sleeve, a high temperature pipeline and a wall body; the folding sleeve is provided with a channel corresponding to the high temperature pipeline, and the extension direction of the channel is parallel to the axis direction of the folding sleeve; the side wall of the folding sleeve is formed by back-folding along the axis direction of the folding sleeve through a folding plate;the tail end, away from one side of the channel, of the folding plate extends outside in the radical direction of the folding sleeve and forms a connecting part used for connecting with the wall body; an installing hole is formed in the wall body corresponding to the folding sleeve, and the folding sleeve is arranged in the installing hole in a penetrating mode; and the high temperature pipelineis arranged in the channel in a penetrating mode, and thus the side wall of the folding sleeve is clamped between the high temperature pipeline and the wall body. According to the high temperature pipeline heat insulation wall-penetrating structure and the folding sleeve thereof, temperature of the wall body in connection with the pipeline is efficiently lowered, damage and thermal stress deformation caused by high temperature of the wall body is avoided, and high temperature damage on the other parts of the wall body is avoided. The folding sleeve has the displacement compensation ability dueto the back-folding structure, and vibration and sliding moving of the high temperature pipeline are efficiently prevented.