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

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 multifunctional elastic rubber blanket and a manufacturing method thereof. The manufacturing method of the multifunctional elastic rubber blanket includes the following steps that 1, bottom-layer particles are manufactured; 2, a bottom layer is manufactured; 3, surface-layer particles are manufactured; 4, a surface layer is manufactured; 5, the surface layer and the bottom layer are attached. Patterns on the multifunctional elastic rubber blanket are rich, no aging or deformation is likely to happen, weather fastness is good, the multifunctional elastic rubber blanket is resistant to water, oil, acid and alkali and high temperature, retardant to flaming, long in service life, environmentally friendly and free of formaldehyde and radiation, antibacterial ingredients are contained, and attachment and breeding of bacteria can be restrained. The multifunctional elastic rubber blanket is low in cost and good in elasticity, and can be widely used for various crowded public places such as medical care environments, educational environments, offices, the hotel industry, the retail industry and light industry departments.

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.

The invention discloses a fabricated wall connecting joint and a construction method thereof. The fabricated wall connecting joint comprises a first prefabricated part, wherein a second prefabricatedpart is fixedly arranged on the side face of the first prefabricated part, and an upper connecting piece and a lower connecting piece are fixedly arranged on the two sides, close to the first prefabricated part, of the second prefabricated part correspondingly; a first prefabricated wall is arranged on the upper portion of the first prefabricated part; a second prefabricated wall is arranged on the lower portion of the first prefabricated part; and a third prefabricated wall is arranged between the second prefabricated part and the upper connecting piece, and a fourth prefabricated wall is arranged between the second prefabricated part and the lower connecting piece. The fabricated wall connecting joint can be suitable for connecting the prefabricated wall in the up-down longitudinal direction and a right-angle type prefabricated wall between the transverse direction and the longitudinal direction, the application range is wide, and the connecting strength is high. The invention further provides the construction method of the fabricated wall connecting joint, operation is easy and fast, and the fabricated wall connecting joint and the construction method thereof are very worthy ofpopularization.