49results about How to "Reduce thermal expansion and contraction effect" patented technology

The invention provides a construction method for a well structure of a heat exchange type horizontal butt-joint geothermal well. The construction method for the well structure of the heat exchange type horizontal butt-joint geothermal well comprises the following steps that drilling is conducted on the ground surface until drilling into the stable clay layer or under a bedrock surface, a vertical well first opening well hole is formed, then second opening is conducted from the bottom of the vertical well first opening well hole until drilling under an arbitrary mudstone layer with a thickness being greater than 6m in the target heat storage layer, and a vertical well second opening well hole is formed; drilling is conducted in the surface of the ground surface until drilling into the stable clay layer or under a bedrock surface and the distance between a well opening of a vertical well and the surface of the ground surface is at least 250 m, and a horizontal engineering well first opening well hole is formed; then second opening is conducted from the bottom of the horizontal engineering well first opening well hole, and a horizontal engineering well second opening well hole is formed and communicates with the vertical well second opening well hole in a butt-joint mode, thus a horizontal engineering well cylinder and a vertical well cylinder form a U-shaped pipeline in a seamless butt-joint mode, and the structure is large in section surface area, heat exchanging water amount and heat exchanging amount; and according to the construction method for the well structure of the heat exchange type horizontal butt-joint geothermal well, heat exchanging is achieved only by using circulation of cold and heat water, no underground water is pumped, water resources are protected, the underground water is not polluted at the same time, and the environment-friendly effect is achieved.

The invention discloses a solar heat-absorbing tube and a manufacturing method. The solar heat-absorbing tube comprises an outer layer of a glass tube, a flexible thermal-conductive tube and a positioning device, wherein, the flexible thermal-conductive tube penetrates a shaft line of the glass tube in parallel from the interior of the glass tube and is fixed by the positioning device. Compared with the existing solar heat-absorbing tube technology, the structure and the method have the following advantages: the heat absorption efficiency is high; the impact of thermal expansion and contraction on the thermal-conductive tube is small, and the operation is stable and reliable; the structure and the manufacturing method are simple, the cost is low, the installation and the maintenance are very convenient, thereby being very applicable to large-scale popularization and application; the heat exchange effect of a thermal-conductive medium is strong, the heat transfer is faster, and the mixed flow phenomenon existed in a blind pipe can be avoided.

The invention provides a floating bearing and a turbocharger of an internal combustion engine adopting the floating bearing, and aims to solve the problem of influence on normal operation of the turbocharger of the internal combustion engine caused by low abrasion resistance, high oil consumption and short service life of the floating bearing in the prior art. The floating bearing comprises a cylindrical bearing body, wherein the bearing body is made of a zirconia ceramic material; a lubricating oil hole which penetrates through the side wall of the bearing body is formed in the middle of the bearing body. The turbocharger of the internal combustion engine comprises an intermediate and the floating bearing, wherein an inner cavity is formed in the intermediate; a turbine shaft which rotates by taking self-axis as the center is arranged in the inner cavity of the intermediate; the floating bearing is positioned in an interval between the intermediate and the turbine shaft; an outer lubricating oil film is formed between the intermediate and the floating bearing; an inner lubricating oil film is formed between the floating bearing and the turbine shaft. The working performance of the turbocharger of the internal combustion engine can be effectively improved according to the characteristics of the floating bearing which is made of the zirconia ceramic material, and the service life of the turbocharger is greatly prolonged.

The invention discloses a structure for sealing a cavity hole. The structure comprises an annular groove (101) machined on a cavity (1), a shape memory alloy ring (3) and a sealing cap (4), wherein the sealing cap is provided with the lower edge (401) with the wall thickness of 0.1-0.3 mm and can be matched with the annular groove (101) of the cavity, the shape memory alloy ring (3) is arranged outside the lower edge (401) of the sealing cap in a sleeving mode, after being heated, the inner diameter of the shape memory alloy ring (3) is shrunk so as to extrude the lower edge (401) of the sealing cap, the inner wall of the sealing cap and the inner wall of the annular groove (101) of the cavity form a sealing surface, so that the cavity hole is sealed, and corresponding shape memory alloy rings and sealing caps can be selected according to the shapes of the annular grooves for sealing different section holes. According to the structure for sealing the cavity hole, the structure is simple, the heating temperature is low, the influence on the performance and the service life of parts in the cavity is small, sealing is still reliable when the environment temperature changes, and the sealed hole can be prevented from being polluted by the outside environment.

A probe head structure of a cantilever type probe card comprises a circuit board, an adhesive layer, a plurality of probes and an insulating ceramic piece arranged successively from top to bottom. Thelower surface of the circuit board has a plurality of circuit contacts; the insulating ceramic piece has a sloped surface, and the sloped surface faces the circuit board; the probes are disposed on the sloped surface, and each probe is in contact with the corresponding circuit contact at one end; the adhesive layer is located between the insulating ceramic piece and the circuit board to fix the positions of the probes and the insulating ceramic piece. Thus, in high and low temperature test operation of wafers, the insulating ceramic piece at the bottom layer of the probe head can block heat transfer upward and guarantee that the probes are in a good contact state during the test operation, avoiding the problem of large and small wafer probe marks during the high and low temperature test process.

The invention discloses nano optical waterproof glue and a nano waterproof lamp employing the same. The nano optical waterproof glue comprises the following components in parts by weight: 25-35 parts of epichlorohydrin, 25-35 parts of nanoscale bisphenol, and 35-45 parts of nanoscale polyvinyl chloride, and the components are evenly mixed to prepare the nano optical waterproof glue. The nano optical waterproof glue is directly coated in the region requiring water prevention of the waterproof lamp, and then the waterproof lamp is heated for 0.5-1.5 hours at 70-90 DEG C, so as to obtain the nano waterproof lamp. The nano optical waterproof glue provided by the invention is composed of nanomolecules, so that the tightness between the molecules is high, and a hydrone cannot enter. The waterproof function is achieved. The glue is formed by the nanomolecules, so that the effects of thermal expansion and contraction are low, and meanwhile, the problems of yellowing, ageing and the like are also solved.

The invention relates to a flexible rack for a material conveyor and a belt conveyor. The flexible rack for the material conveyor comprises a rack body and supporting legs, wherein materials are arranged on the rack body and are driven to move to a specified position; at least two supporting legs are arranged, one end of each supporting leg is pivotally connected with a fixing base through a rotating shaft, the other end of each supporting leg is in sliding connection with a first strip-shaped hole through a first connecting part which is inserted in a matched mode, and the first strip-shapedholes are arranged along the length direction of the rack body. The plurality of supporting legs are arranged at the bottom of the rack body, one end of each supporting leg is pivotally connected withthe corresponding fixing base, and the other end of each supporting leg is in sliding connection with the corresponding first strip-shaped hole through the corresponding first connecting part, so that the problems that an existing belt conveyor is of a rigid structure and does not have a displacement compensation function and cannot meet the requirement of complex use environments are solved.

The invention discloses a preparation method of a composite fireproof plate, and belongs to the technical field of preparation of fireproof materials. Maleic anhydride and glycerin are subjected a reaction with rosin in sequence in the production process of polyurethane; rosin with a plasticizing effect is modified; maleated rosin reacts with glycerin to generate modified rosin resin, and the reaction belongs to a polyesterification reaction; the acid value of maleated rosin can be reduced through the polyesterification reaction, and the softening point of the maleated rosin is increased; meanwhile, a polyurethane bottom piece can be crosslinked with rubber components in a stone plate through rosin, cohesion between interfaces of the polyurethane bottom piece and the stone plate is enhanced after calendering, and the stable and high-toughness composite fireproof plate is formed. When the PVC plasticized board is prepared, flax fibers are soaked in hydrogen peroxide to be oxidized, theobtained oxidized flax fibers are soaked in an emulsified liquid of oxidized starch to be modified and dispersed, the gelatinization temperature of the starch can be reduced through the oxidized starch, the hot paste viscosity is reduced, and the thermal stability is enhanced.

The composite modified crystal silicon glass plate is produced through laminating several layers of modified crystal silicon glass sheet with adhesive film, and the modified crystal silicon glass sheet is produced through adhering crushed glass blocks. The product has high strength, certain toughness and low heat expansion coefficient and may have different uses.

The invention relates to an organic waste pyrolytic treatment method. In the prior art, the energy consumption is high; the cost is large; and the service life of equipment is short. The organic waste pyrolytic treatment method adopts the pyrolytic treatment technique of combination of a pre-pyrolysis section and a secondary pyrolytic section to reutilize heating flue gas exhausted by the pyrolytic section for heating the pre-pyrolysis section according to a two-stage mechanism of pyrolysis. The method comprises the following steps: firstly, organic waste for pyrolysis is crushed according to the feeding demand; secondly, the crushed organic waste for pyrolysis is sent into a pre-pyrolysis device for drying and primary degradation; and thirdly, pre-pyrolysis products are sent into a pyrolytic device for pyrolysis, and oil products, fuel gas and carbon residue generated by the reaction are respectively exhausted. The pyrolytic device is heated through a hot-blast stove and tail gas exhausted by the hot-blast stove is sent into a hot-blast jacket of the pre-pyrolysis section for heating the pre-pyrolysis section section. The organic waste pyrolytic treatment method fully utilizes the caloric content of the flue gas, has obvious energy-saving effect, saves the consumption of high-quality steels and improves the service life of the pyrolytic device.

The invention discloses built-in louver hollow glass, which includes a frame and two oppositely arranged glass. A sealing cavity is formed between the frame and the two oppositely arranged glass, thesealing cavity is internally provided with a plurality of louvers, a rotating shaft, a louver overturning mechanism and a louver lifting mechanism, and the rotating shaft is transversely and rotatablyarranged on the upper part of the louvers; the louver tilting mechanism includes an overturning runner, an installation seat, an overturning ladder rope and a control assembly, the overturning runneris installed on the installation seat, the rotating shaft passes through the installation seat and the overturning runner, one end of the overturning ladder rope is wound around the overturning runner, the overturning ladder rope is provided with a plurality of ladder ways, and the louvers pass through the ladder ways one to one correspondingly; and two groups of external magnetic control mechanisms which are matched with an internal overturning magnetic handle and an internal lifting magnetic handle correspondingly are further included, and the two groups of external magnetic control mechanisms are both arranged on the outer side of the sealing cavity. The built-in louver hollow glass has the advantages that rotation of the rotating shaft can be accurately controlled, the manufacturing cost is low, operation is convenient, and resistance is low and the labor is saved when the magnetic handles move.

The invention provides a processing method of polypropylene pipes. According to the method, copolymerized polypropylene, heavy calcium carbonate, glass beads and antioxidants are evenly mixed and stirred; then a mixture is added to a twin-screw extruder to extrude the pipes; and finally, all that is needed is to cool and shape the pipes. The processing method has the advantages that the processing is convenient and the operation is convenient and simple.

The invention provides a labyrinth type adjusting valve element with a temperature control function. According to the structure, from top to bottom, of the labyrinth type adjusting valve element, the labyrinth type adjusting valve element only comprises a top cover, functional parts and a base, or comprises a top cover, functional parts, partition plate parts and a base; all layers are of an annular disc structure, and the functional parts and the partition plate parts are arranged between the top cover and the base alternately; groove channels are formed in the two faces of each functional part, wherein one face of each functional part is a high-pressure medium working face, and the groove channels on the face enable the inner wall and the outer wall to communicate to form high-pressure medium outlets / inlets; the other face of each functional part is a temperature control medium working face, and temperature control medium outlets / inlets are formed in the positions, corresponding to the functional parts, of the partition plate parts and communicate through the groove channels on the corresponding temperature control medium working faces; the top cover is provided with temperature control medium outlets / inlets, and the lower surface of the top cover is provided with temperature control medium outlet / inlet grooves. According to the adjusting valve element, the heat expansion and cold contraction effect of a pressure reducing valve is relieved, the matching precision of a heat exchange valve element in the operation process is improved, and the outlet pressure of the pressure reducing valve is finely adjusted within a small range.

The invention relates to the technical field of anti-seepage materials, in particular to a preparation method of a salt-tolerant flexible anti-seepage material. The preparation method comprises the following steps: preparing anti-seepage slurry by utilizing polyether glycol, rosin, hexyl diisocyanate, maleic anhydride and the like as raw materials; foaming by utilizing an ethylene-vinyl acetate copolymer, thus preparing a foamed sheet; preparing salt-tolerant polyacrylate emulsion by taking methyl methacrylate and butyl acrylate as monomers; coating two surfaces of the foamed sheet with the salt-tolerant polyacrylate emulsion, thus obtaining salt-tolerant foam; immersing the salt-tolerant foam in the anti-seepage slurry, and drying, thus obtaining the salt-tolerant flexible anti-seepage material. Maleic rosin is utilized for reacting with glycerol to generate modified rosin resin, so that glass-transition temperature of the anti-seepage slurry can be reduced, latex can be used for introducing a non-ionic hydrophilic group to a main chain of foam resin, so that the foam resin has high water absorption capacity; the sensitivity of the foam resin to salt is weaker, and the purpose ofincreasing the slat tolerance of the foam resin can be achieved by reducing the sensitivity of a group on a polymer molecular chain of the foam resin.

The invention discloses a high temperature alloy plate bending die. The high temperature alloy plate bending die comprises an upper die base plate, an upper die and a lower die, wherein the upper die is fixed to the bottom of the upper die base plate in a replaceable manner, a molding pressing head matched with a forge piece in appearance is arranged at the bottom of the upper die, and a molding groove is formed in the lower die in the manner of being matched with the molding pressing head; positioning plates for positioning a plate blank are correspondingly arranged at the position, on the two sides of the molding groove, of the lower die, and slope structures which are arranged in the manner of being matched with the plate blank are arranged on the inner side faces of the positioning plates; and the positions, combined with the two end faces of the forge piece, in the molding groove are each provided with a straight section, and the positions, combined with the two end faces of the forge piece, on the molding pressing head are inwards provided with inner die lifting angles A. The high temperature alloy plate bending die is low in die cost; the machining accuracy is high, and extrusion deformation is locally carried out in the plate bending process; and through cooling of the die to the extrusion component, the appearance size of the forge piece is finally guaranteed.

The invention discloses a thermoelectric refrigeration and film moisture permeation combined temperature and humidity control system, which provides accurate, rapid and stable temperature and humiditycontrol for micro-environment scenes with special temperature and humidity requirements, such as biological incubators, food storage cabinets, cultural relic display stands and the like. According tothe temperature requirement, the system performs cold end and hot end switching on the thermoelectric module by changing the current direction so as to perform temperature control on air in the microenvironment, and the system is simple in structure, does not consume refrigerants, does not need high-speed moving parts and is low in noise. According to the combined temperature and humidity controlmode adopted by the invention, the cold and heat loads of the thermoelectric module are fully utilized, hot water or cold water is prepared while the temperature of air is controlled, mass transfer driving force is provided for the humidity treatment of the membrane module, and the air is humidified or dehumidified through the moisture-permeable membrane, so that the humidity control is realized.The non-contact humidity treatment mode can effectively avoid the situation that airflow carries liquid drops, and it is guaranteed that the air quality is not affected by the water quality.

The invention discloses hollow glass with built-in louver blades. The hollow glass comprises a frame and two pieces of oppositely-arranged glass, a sealing cavity is formed between the frame and the two pieces of oppositely-arranged glass, the sealing cavity is internally provided with the multiple louver blades and an overturning and lifting mechanism for controlling the multiple louver blades tobe overturned and rise and fall, the overturning and lifting mechanism comprises a rotating shaft, an overturning rotating wheel, a mounting seat, an overturning ladder rope, a lifting pull rope anda control assembly, the overturning rotating wheel is mounted on the mounting seat, the rotating shaft penetrates through the mounting seat and the overturning rotating wheel, one end of the overturning ladder rope is wound around the overturning rotating wheel, the overturning ladder rope is provided with a plurality of ladder openings, the multiple louver blades penetrate through the multiple ladder openings in a one-to-one correspondence mode, one end of the lifting pull rope penetrates through the multiple louver blades and is connected with the louver blade at the lowermost end, and the other end of the lifting pull rope penetrates through the mounting seat and is connected with the control assembly; and the hollow glass further comprises an external magnetic control mechanism arranged on the outer side of the sealing cavity. The hollow glass has the advantages that the rotating shaft can be accurately controlled to rotate, the manufacturing cost is low, resistance is small when amagnetic handle moves up and down, and labor saving is achieved.

The invention relates to a plastic-wood floor board combined structure, comprising a wood floor board located on the upper layer and a plastic floor board located on the lower layer, wherein the plastic floor board comprises a mating face and a floor board body; a plurality of clamping grooves for the installation of the wood floor board are formed in the mating face; the wood floor board comprises a floor face and clamping tenons; the clamping tenons are arranged on the bottom part of the wood floor board; in installation, the clamping tenons are respectively embedded into the clamping grooves from a side direction, so that the plastic-wood floor board combined structure can be fixedly arranged. The plastic-wood floor board combined structure not only has the advantages of the plastic floor board of being waterproof, mothproof and corrosion-resistant, but also has the vision and touch of the wood floor board; the installation is simple; the detachment is convenient; a stable supporting structure is provided, while the needed materials are reduced; moreover, the heat-expansion and cold-contraction influences caused by the temperature changes of the surroundings can be reduced.

The invention relates to a floorboard combination structure. The floorboard combination structure comprises a wooden floorboard located on the upper layer and a plastic floorboard located on the lower layer. The wooden floorboard comprises a floorboard face and an assembling face. The assembling face is provided with a plurality of first clamping grooves used for installing the plastic floorboard. The plastic floorboard comprises a top face and a floorboard body. The top face is provided with a plurality of second clamping grooves used for installing the wooden floorboard. The first clamping grooves and the second clamping grooves extend along the edge of one side of the assembling face to the edge of the opposite side, and the width is gradually reduced. The floorboard combination structure further comprises mortises and tenons, and the width of the mortises and tenons is gradually reduced from the edge of one side to the edge of the opposite side. In the installing process, the wooden floorboard is placed on the plastic floorboard, and the mortises and tenons are embedded into space formed by the first clamping grooves and the second clamping grooves from the side direction so that the floorboard combination structure can be fixed. The floorboard combination structure has the advantages of the plastic floorboard and vision and touch of the wooden floorboard, materials needed by manufacture are reduced while the stable supporting structure is obtained, and the influence of thermal expansion and cold expansion caused by surrounding environment change can be reduced.

The invention provides a floating bearing and a turbocharger of an internal combustion engine adopting the floating bearing, and aims to solve the problem of influence on normal operation of the turbocharger of the internal combustion engine caused by low abrasion resistance, high oil consumption and short service life of the floating bearing in the prior art. The floating bearing comprises a cylindrical bearing body, wherein the bearing body is made of a zirconia ceramic material; a lubricating oil hole which penetrates through the side wall of the bearing body is formed in the middle of the bearing body. The turbocharger of the internal combustion engine comprises an intermediate and the floating bearing, wherein an inner cavity is formed in the intermediate; a turbine shaft which rotates by taking self-axis as the center is arranged in the inner cavity of the intermediate; the floating bearing is positioned in an interval between the intermediate and the turbine shaft; an outer lubricating oil film is formed between the intermediate and the floating bearing; an inner lubricating oil film is formed between the floating bearing and the turbine shaft. The working performance of the turbocharger of the internal combustion engine can be effectively improved according to the characteristics of the floating bearing which is made of the zirconia ceramic material, and the service life of the turbocharger is greatly prolonged.

The invention relates to a splice Printed Circuit Board (PCB) made from paper fibre plates, which is capable of preventing cracks from forming in the process of the Surface Mounting Technology (SMT). The splice PCB consists of a PCB which is formed by splicing a plurality of PCB units into a whole. The splice PCB is characterised in that the splice PCB is opened with strip-shaped grooves. Two or more strip-shaped grooves are arranged and the strip-shaped grooves are evenly distributed on the splice PCB. The strip-shaped grooves are evenly distributed on the splice PCB along the horizontal direction. The strip-shaped grooves are evenly distributed on the splice PCB along the vertical direction. The strip-shaped grooves are evenly distributed on the splice PCB, combining horizontal and vertical distributions. The splice PCB adopting the structure is effective for preventing cracks from forming in the SMT process, thereby improving product percent of pass.

The invention relates to a stable floor combination structure which comprises a wood floor on the upper layer, and a plastic floor on the lower layer and tenons, wherein the wood floor comprises a floor surface and an assembling surface, and a plurality of slots for installing the tenons are arranged in the assembling surface. The slot extends along one side edge of the assembling surface to the opposite side edge, and the width is gradually reduced. The plastic floor comprises an end face and a floor body, and a plurality of limiting grooves for installing the tenons are arranged in the top surface. The width of one side edge of the tenon tapers towards the opposite side edge. During installation, the tenons are fixed in the plastic floor, and the tenons are embedded in the slots from side direction to fix the stable floor combination structure. When the stable floor combination structure employs such a structure, the wood floor is convenient to process, the deformation is minimal after the floor is formed, the thickness can be increased, and the quality is improved. The protruding grooves of the plastic facilitate injection moulding and die releasing, and deformation is prevented after injection moulding.

The invention discloses a vehicle-mounted moistureproof and explosion-proof lithium ion storage battery box, belongs to the technical field of lithium ion storage battery boxes, and provides a vehicle-mounted moistureproof and explosion-proof lithium ion storage battery box capable of ensuring moistureproof, waterproof and explosion-proof performance of the storage battery box, the vehicle-mounted moistureproof and explosion-proof lithium ion storage battery box comprises a box body in which a lithium ion storage battery mounting area is arranged, the the vehicle-mounted moistureproof and explosion-proof lithium ion storage battery box comprises an anti-explosion valve, a drying agent box and a drying agent, the anti-explosion valve is installed on the box body, the drying agent box is installed in the box body, air holes are formed in the drying agent box, and the drying agent is placed in the drying agent box. By adopting the combination of the drying agent and the anti-explosion valve, the moisture-proof, waterproof and anti-explosion performances of the storage battery box are ensured; therefore, it is ensured that the interior of the storage battery box cannot be moist and condensed in a moist environment, the insulativity and safety of the storage battery box are ensured, meanwhile, the assembling and sealing requirements of the case can be lowered, and the service life of case sealing parts is prolonged.

The invention relates to a process for preparing ethyl lactate by catalytic esterification of a fixed bed reactor. The process comprises the following steps: step A, inputting a mixed material of lactic acid and ethanol into the fixed bed reactor from a feed port of the fixed bed reactor; step B, the materials entering the fixed bed reactor are inputted into a tube nest of the fixed bed reactor through a material distribution disc of the fixed bed reactor; step c, the materials react in the tube nests; and step D, discharging the reacted materials from the tube nest, collecting the materials at the bottom of the fixed bed reactor, and discharging the materials from the discharge port of the fixed bed reactor. According to the invention, the supporting assembly is arranged, the supporting assembly is composed of a plurality of connecting assemblies, so that the tube nest can be conveniently fixed and supported, the width of the clamping plate can be set as required, and the contact areabetween the clamping plate and the tube nest is larger, so that when the tube nest vibrates, the tube nest can be effectively prevented from being abraded, material fatigue and the like; therefore, the probability of leakage of the tube nest is reduced.

The invention relates to a plastic-wood floor combined structure which comprises a wood floor and a plastic floor. The wood floor is positioned on an upper layer, the plastic floor is positioned on a lower layer, the wood floor comprises a floor surface, the plastic floor comprises a top surface, and the width and the length of the top surface of the plastic floor are identical to the width and the length of the floor surface of the wood floor. The plastic-wood floor combined structure has the advantages that the plastic-wood floor combined structure not only has waterproof, insect-proof and corrosion-resistant merits of the plastic floor, but also has vision and the sense of touch of the wood floor, and is provided with stable support structures, required materials for manufacturing the plastic-wood floor combined structure can be reduced, and influence of thermal expansion due to change of ambient environment temperatures can be reduced; the wood floor of the plastic-wood floor combined structure is easy and convenient to process and is low in deformation after being formed, accordingly, the thickness of the plastic-wood floor combined structure can be increased conveniently, the texture of the plastic-wood floor combined structure can be enhanced, and the plastic-wood floor combined structure brings convenience for mounting a plurality of floors.

The invention discloses a composite microcapsule heat-insulating mortar in the technical field of building materials and a preparation method thereof. The heat-insulating mortar includes microcapsules and self-healing building materials, and the raw materials of the self-healing building materials include calcium sulfoaluminate, calcium sulfoaluminate, Potassium aluminum sulfate, ammonium aluminum sulfate, curing accelerator, polypropylene fiber, rubber powder, inorganic gel, hydroxypropyl, titanium dioxide, magnesium oxide, silica powder, sepiolite, brucite, vitrified microspheres and more In this method, the microcapsule phase change temperature control energy storage material is firstly prepared, and then the microcapsule phase change temperature control energy storage material is added to the self-healing building material in turn, and continuously stirred, and the composite microstructure is obtained after drying. Capsule insulation mortar finished product. The invention has remarkable heat insulation and energy-saving effects when applied to iron sheet tile surfaces, floors, and inner and outer walls, and simultaneously has the function of crack self-healing, and can effectively control the early plastic shrinkage, dry shrinkage and non-structural properties of the heat-preservation mortar.

The present invention utilizes the fixed-bed reactor to catalyze the esterification to prepare the ethyl lactate process, and comprises the following steps: Step A: inputting the mixed material of lactic acid and ethanol into the fixed-bed reactor from the feed port of the fixed-bed reactor; Step B: The materials entering the fixed bed reactor are input into the tubes of the fixed bed reactor through the distribution tray of the fixed bed reactor; Step C: The materials are reacted in the tubes; Step D: The reacted materials are discharged from the tubes Afterwards, it is collected at the bottom of the fixed-bed reactor and discharged from the outlet of the fixed-bed reactor. In the present invention, by arranging the support assembly, the support assembly is composed of a plurality of connection assemblies, which can facilitate the fixing and support of the tube, and because the width of the splint can be set as required, there is a greater contact with the tube. Therefore, when the tube is vibrated, the wear of the tube and the fatigue of the material can be effectively avoided, thereby reducing the probability of leakage of the tube.

The invention discloses hollow glass with built-in louver blades. The hollow glass comprises a frame and two pieces of oppositely-arranged glass, a sealing cavity is formed between the frame and the two pieces of oppositely-arranged glass, the sealing cavity is internally provided with the multiple louver blades and an overturning and lifting mechanism for controlling the multiple louver blades tobe overturned and rise and fall, the overturning and lifting mechanism comprises a rotating shaft, an overturning rotating wheel, a mounting seat, an overturning ladder rope, a lifting pull rope anda control assembly, the overturning rotating wheel is mounted on the mounting seat, the rotating shaft penetrates through the mounting seat and the overturning rotating wheel, one end of the overturning ladder rope is wound around the overturning rotating wheel, the overturning ladder rope is provided with a plurality of ladder openings, the multiple louver blades penetrate through the multiple ladder openings in a one-to-one correspondence mode, one end of the lifting pull rope penetrates through the multiple louver blades and is connected with the louver blade at the lowermost end, and the other end of the lifting pull rope penetrates through the mounting seat and is connected with the control assembly; and the hollow glass further comprises an external magnetic control mechanism arranged on the outer side of the sealing cavity. The hollow glass has the advantages that the rotating shaft can be accurately controlled to rotate, the manufacturing cost is low, resistance is small when amagnetic handle moves up and down, and labor saving is achieved.