46results about How to "Increase diameter size" patented technology

A fluid ejector pump is characterized by a longitudinally extending flow passage with a fluid inlet end and a fluid outlet end. The fluid inlet end includes a Venturi tube inlet having a relatively larger diameter entry opening for being supplied with pressurized fluid and a relatively smaller diameter exit opening within the flow passage. An air inlet communicates with the flow passage adjacent the exit opening for the intake of air into the fluid exiting the Venturi tube inlet. A shaped deflector is located in the flow passage upstream of the exit opening, with the flow passage defining an annular gap around and along the deflector. An upstream end of the deflector has an upward angle causing acceleration of the fluid flowing upstream in the flow passage. A hi-low mixing effect is produced in the flow passage for greater mixing and turbulence of the fluid while vacuum or suction at the suction inlet is increased.

The invention discloses a method to mend cutting tool that includes the following steps: using carving tool to press copper solder between cutting tool and blade to make the copper solder crystal cause plastic distortion; thinning the outer circle of cutting tool to restore design work space size; thinning any angle of the blade to make the blade restore design work angle. The method prolongs useful life and decreases machining cost.

The invention discloses a method for utilizing sulfate slag and red mud comprehensively. The method comprises the steps that the sulfate slag and the red mud are mixed with a reducing agent so as to obtain a mixed material; roasting is carried out on the mixed material so as to obtain a reduced iron product; the reduced iron product is separated so as to obtain iron powder. By the utilization of the method, the two metallurgical solid waste resources, namely the red mud and the sulfate slag are utilized comprehensively, so that the iron product with good indexes is obtained.

The invention provides a preparation method of a Mg-Zn-RE-Zr magnesium alloy, which comprises the following steps: 1) melting a Mg source, a Zn source, a Y source, a Gd source, a La source and a Zr source to obtain a molten alloy; 2) casting the molten alloy at 690-720 DEG C to obtain an as-cast alloy; and 3) carrying out annealing treatment at 230-320 DEG C on the as-cast alloy to obtain the Mg-Zn-RE-Zr magnesium alloy. The Y source, Gd source and La source are utilized to prepare the Mg-Zn-RE-Zr magnesium alloy; and by controlling the technological parameters in the Mg-Zn-RE-Zr magnesium alloy preparation process, the method provided by the invention can be used for preparing the Mg-Zn-RE-Zr magnesium alloy with favorable mechanical properties and large diameter.

The invention discloses a water dispersion magnetic polymer microsphere and a preparation method thereof. Firstly, a core is prepared by soap-free emulsion polymerization, then atom transfer radical polymerization (ATRP) is utilized to actively polymerize and prepare a hydrophilic shell, and the obtained water dispersion magnetic polymer microsphere is a composite consisting of a superparamagnetic center and a high molecular polymer; an outer layer is a hydrophilic or water-soluble polymer and is prepared through an active polymerization ATRP reaction; an inner layer is a polymer which can produce an even cavity, can load a magnetic center and has good cross-linking fixation, and is generated through the soap-free emulsion polymerization; the superparamagnetic center is formed by the even cavity of the inner layer loaded with an inorganic superparamagnetic material; and the diameter range of the microsphere is between 100 and 2000nm, the magnetic content is between 3 and 50 percent, and the saturated magnetization strength is between 3.0 and 70.0emu / g. The preparation method is simple, and the produced water dispersion magnetic polymer microsphere has a controllable structure, even distribution, regular shape, adjustable magnetic content, and good biocompatibility.

A size enhancing jewelry setting for a precious stone includes a setting body with a holding portion that is configured to engage and hold the precious stone affixed to the setting body. A faceted plate is supported by the setting body. The faceted plate has a central opening for the passage of a pavilion region of the precious stone therethrough, an upward facing reflecting surface that partially extends below a girdle of the precious stone and which faces a portion of the pavilion region of the precious stone in spaced relationship thereto, and a portion that protrudes peripherally beyond the girdle of the precious stone. The faceted plate is being configured to reflect light that emanates from the pavilion of the precious stone outwardly and upwardly, the reflected light surrounding and extending beyond the precious stone to produce a visual effect of the precious stone being larger in a peripheral dimension thereof than it actually is.

The invention provides a crystal growth assembly for preparing single crystals through a PVT method. The crystal growth assembly comprises a crucible and a heating device located above the crucible. The heating device is provided with a plurality of concentrically arranged annular heating temperature zones, so that the axial temperature gradient in the crucible is adjusted by controlling the overall heating temperature of the plurality of concentrically arranged annular heating temperature zones in the heating and / or crystal growth stage of single crystal preparation; and the radial temperature gradient in the crucible is adjusted by controlling the heating temperature of each annular heating temperature zone in the plurality of concentrically arranged annular heating temperature zones. According to the device for preparing the silicon carbide single crystal, the axial temperature gradient and the radial temperature gradient of the temperature field in the crucible can be controlled, so that the growth rate of the crystal is increased, the stable growth environment of the crystal is ensured, a relatively large crystal edge diameter gradient is maintained, the edge quality is improved, and meanwhile, the silicon carbide single crystal with a relatively large size is obtained.

The invention relates to an patterned substrate for aluminum nitride (AlN) crystal growth, which resolves the problems that at present a method using seed crystals to prepare large AlN crystals is high in cost of AlN seed crystals, and quality of AlN crystal can be affected by the fact that SiC seed crystals are prone to resolve at high temperature. The patterned substrate is formed by the fact that evenly-distributed image units are embedded on the substrate, the shape of each image unit is in a regular six prism frustum, an upper bottom face with side length of a2 is arranged on the plane where the substrate is arranged, the side length of a lower bottom face is a1, and the height of each image unit is c1, wherein the a1 is equal to n1a, the c1 is n1c, the a2 is n2a1, a and c are lattice parameters of the hexagon AlN crystals, the n1 is larger than 0 and equal to or smaller than 15*107, and the n2 is larger than 1 and equal to or smaller than 3. The patterned substrate is simple in preparation process. The grown AlN crystal has the advantages of being large in diameter and low in defect density.

The invention provides an improved structure of a positioning ring for a front top hydraulic oil cylinder of a dumper. The structure comprises an oil cylinder cover assembly, an outer cylinder assembly and an oil cylinder positioning ring, wherein the lifting end of the outer cylinder assembly is fixed in the oil cylinder cover assembly; the oil cylinder positioning ring is fixed on the periphery of the outer cylinder assembly; at least four blind holes are circumferentially and uniformly distributed in the outer ring surface of the oil cylinder positioning ring; a buffer nail is arranged in each blind hole; the outer end of the nail rod of each buffer nail extends out of the corresponding blind hole, and is in clearance fit with the inner circumference of the oil cylinder cover assembly; and each buffer nail comprises a nail head, a nail rod extends upward from the center of the upper end face of the nail head, and the diameter of each nail head is slightly more than the diameter of the corresponding nail rod. The improved structure can be used for inhibiting abnormal sound generated by collision between the oil cylinder positioning ring and the metal oil cylinder cover assembly, and has the advantages of simple process, low cost and convenience in popularization and application.

The invention relates to a hollow air suction rotary type tool adjuster. The hollow air suction rotary type tool adjuster is composed of an adjuster outer sleeve, a bearing assembly, an end cover, a locking nut, a rotary type adjusting handle, a sealing ring, a rotary type handle outer sleeve, a rotary type elbow connector and a 90-degree elbow. The bearing assembly is installed in the adjuster outer sleeve, the end cover is installed at the rear end of the adjuster outer sleeve through screws, the front end of the rotary type adjusting handle is in threaded connection in the end cover through the locking nut, the rear end of the rotary type adjusting handle is connected with the rotary type handle outer sleeve through the sealing ring, the rear portion of the rotary type handle outer sleeve is in threaded connection with the rotary type elbow connector, an elastic check ring is arranged between the rear end of the rotary type handle outer sleeve and the rotary type elbow connector, and the rear portion of the rotary type elbow connector is connected with the 90-degree elbow. The hollow air suction rotary type tool adjuster is scientific and reasonable in design, and has the advantages of being smooth in waste discharge, capable of reducing the rejection rate, concentric in cutter body mounting, free of interference with a connected waste discharge pipeline, reliable in adjustment and easy to implement.

The invention discloses a machine tool for machining an inner bore and end surfaces of a flange of a shield tunneling machine. The machine tool has a small size, is arranged in the inner bore of the shield tunneling machine and used for simultaneously machining the inner bore and the end surfaces of the flange; the machine tool has a simple mechanism, is convenient to mount and dismount without excavating a special foundation, so that investment cost and maintenance cost of the device are reduced, and the floor area is reduced. Moreover, the machine tool can be adjusted according to the size and the shape of a component, so that the adaptability is strong.

The invention relates to application of osteocalcin to the regulation of exosomes of endothelial progenitor cells. The regulation relates to number and diameter distribution of the exosomes. The regulated exosomes can obviously promote multiplication and migration of endothelial cells, and ensure that the endothelial cells rapidly produce vessels. The discovery of a regulation mechanism provides novel thought for the treatment of ischemic diseases.

The invention discloses an M10 hot-dip galvanized screw bolt. The diameter of an external thread of the M10 hot-dip galvanized screw bolt consists of a pre-galvanization size of the external thread and a galvanized layer thickness, and the galvanized layer thickness ranges from 54 microns to 65 microns. Since the galvanized layer thickness of the M10 hot-dip galvanized screw bolt is 54-65 microns, the M10 hot-dip galvanized screw bolt is high in corrosion resistance, long in service life and low in limitation on use occasions. Further, the M10 hot-dip galvanized screw bolt has the advantages of excellent galvanization process, large basic diameter, strength improvement, smoothness of after-galvanization surface and fitness with nuts.

The invention discloses an aluminum-based composite material multi-direction double-level deformation restraining device and an application method thereof, particularly relates to an aluminum-based composite material multi-direction double-level deformation restraining device and an application method thereof, and aims at solving the problem that according to a traditional aluminum-based compositematerial extrusion forming method, material diameter-direction size increasing is hard to achieve. The aluminum-based composite material multi-direction double-level deformation restraining device iscomposed of a lower pressing head, an upper pressing head and an annular restraint die. The method comprises the steps that firstly, a cylindrical blank and a cylinder annular wrapping sleeve material which are the same in height are prepared and are in interference fit, and blank preparing is finished; secondly, preheating is conducted, the blank, the upper pressing head, the lower pressing head, a heat preservation bottom plate and the annular restraint die are preheated to the assigned temperature; thirdly, the heat preservation bottom plate, the lower pressing head, the blank and the upper pressing head are placed on a press machine platform; fourthly, the press machine is controlled, and the blank is compressed and deformed; and fifthly, heat treatment is conducted. According to thealuminum-based composite material multi-direction double-level deformation restraining device and the application method thereof, after multi-direction double-level deformation restraining, the comprehensive performance of a composite material can be effectively improved, and the composite material radial size is increased by 15%-25%. The aluminum-based composite material multi-direction double-level deformation restraining device and the application method thereof are used in the aerospace industry.

The invention discloses a safety belt connecting frame for steel structure house construction personnel. The safety belt connecting frame comprises a base plate, a fixing rod, a steel frame, a first rope box and a second rope box, wherein a base is arranged at the top of the base plate; the fixing rod is arranged at the top of the base; the steel frame is arranged on the fixing rod; the first rope box is arranged on the fixing rod above the steel frame; the second rope box is arranged on the fixing rod above the first rope box; rope discs are arranged in the first rope box and the second rope box; lifting ropes are arranged on the rope discs; safety belts are arranged at the end parts of the lifting ropes; control buttons are arranged on the front surfaces of the safety belts; a remote controller is arranged on one side in the first rope box; and a fixing hoop is arranged on one side of the outer part of the first rope box. According to the safety belt connecting frame, the remote controller is electrically connected with a limiting assembly, so that when a worker suspends a steel structure house, the descending length of the lifting ropes can be controlled through the control buttons, and the convenience of the device is improved.

The invention relates to a GLP-1 derivative particle compound and a preparation method thereof, as well as an application thereof in preparation for medicines for treating diabetes and weight-reducing medicines. The compound is a composite system with a core-shell structure, which is formed by entrapping GLP-1 derivative aGLP-1 or mGLP-1 in particles formed by modified polymer gamma-PGA-L-PAE. The particles of the compound disclosed by the invention are capable of stably existing in a solution, and capable of resisting degradation of a PPIV enzyme on the GLP-1 derivative, thus prolonging the systemic circulation time; the particles of the compound have a controlled-release effect for prolonging the internal activity time thereof, so that long-acting blood sugar reduction can be realized, and a weight-reducing effect of controlling body weight growth is further achieved. The invention further discloses a composition for reducing blood sugar and / or reducing body weight. Raw materials involved in the preparation method disclosed by the invention are all free from biotoxicity, high in safety, low in cost, simple in preparation process, and high in entrapment efficiency; the obtained compound is uniform and controllable in particle diameter, good in stability, long in internal activity time, good in body weight control effect, suitable for industrialized mass production, and good in application prospect.

The invention relates to a GLP-1 derivative particle compound and a preparation method thereof, as well as an application thereof in preparation for medicines for treating diabetes and weight-reducing medicines. The compound is a composite system with a core-shell structure, which is formed by entrapping GLP-1 derivative aGLP-1 or mGLP-1 in particles formed by modified polymer gamma-PGA-L-PAE. The particles of the compound disclosed by the invention are capable of stably existing in a solution, and capable of resisting degradation of a PPIV enzyme on the GLP-1 derivative, thus prolonging the systemic circulation time; the particles of the compound have a controlled-release effect for prolonging the internal activity time thereof, so that long-acting blood sugar reduction can be realized, and a weight-reducing effect of controlling body weight growth is further achieved. The invention further discloses a composition for reducing blood sugar and / or reducing body weight. Raw materials involved in the preparation method disclosed by the invention are all free from biotoxicity, high in safety, low in cost, simple in preparation process, and high in entrapment efficiency; the obtained compound is uniform and controllable in particle diameter, good in stability, long in internal activity time, good in body weight control effect, suitable for industrialized mass production, and good in application prospect.

The present application relates to a locking device for a workpiece adapted to be machined on a machine tool, having: a support (14) extending about an axis (A), having an axial cavity (16) adapted to receive a pin (12) fixed to the workpiece (W); and a retaining device for axially retaining the pin. The retaining device comprises two jaws having a curved profile and opposing recesses, which are inserted such that they are respectively slidable in mutually opposing slots of the support to transition between an open position in which the jaws do not interfere with the insertion / removal of the pin and a closed position in which the jaws do not interfere with the insertion / removal of the pin. In the closed position, the jaws engage in opposite positions with the circumferential grooves (18) of the pin that has been inserted into the support. The jaws are functionally interconnected in an open / close relationship by an actuation screw (28) positioned to not interfere with the pin and having a threaded end that engages a corresponding threaded bore provided in the jaw.

The invention discloses a modular precision-adjustable signal coverage system, which comprises a broadband port antenna with a single broadband adjustable signal source coverage angle of 90 degrees, a support plate, an upper mounting cover and a base; the support plate is mounted in the base, and the broadband port antenna is mounted on the support plate. The number and the installation angle of the broadband port antennas can be adjusted according to the actual signal coverage requirement to adjust the signal coverage range; meanwhile, the horizontal angle and the vertical angle of the broadband port antennas are adjusted through a steering support, overall signal coverage of a designated signal coverage area is achieved, the actual signal coverage requirement is met, and the cost is reduced. Moreover, a standing wave tuner is used for correcting the standing wave precision of the equipment, the standing wave index of a specific frequency band can be optimized emphatically, and all covered frequency bands can also be optimized integrally, so that the index requirements of customers on different frequency bands are met, the covered frequency band is 1.5-5Ghz, and the use requirements of 4G and 5G communication FR1 frequency bands are met.

The invention belongs to the technical field of spectrometers for clinical use, and specifically relates to a connection and storage device for an optical fiber and a spectrometer for clinical use, including a spectrometer body; a host shell is arranged outside the spectrometer body; the spectrometer body is detachably connected through a flange There is an optical fiber; the optical fiber passes through the threading groove on the spectrometer body and is fixedly connected to the probe; the outside of the optical fiber is covered with a fiber sleeve; one end of the fiber sleeve is fixedly connected to the inside of the threading groove, and the other end of the fiber sleeve is connected to the top of the probe Fixed connection; both the optical fiber and the optical fiber sleeve are wound on the winding reel; the optical fiber sleeve is made of rubber; the winding reel is fixedly installed on the outer wall of the main machine shell; the two ends of the winding reel are fixed with limiting discs; the invention The optical fiber in the optical fiber is detachably connected through the flange, while the optical fiber sleeve is directly connected to the host shell, and the optical fiber and the optical fiber sleeve are installed separately, so that the size of the optical fiber sleeve can not be limited by the size of the optical fiber and the flange .

The invention discloses a purifier, which comprises a reaction kettle, a filtering device and a storage tank, wherein the reaction kettle is arranged on the left side of the filtering device, the storage tank is arranged on the right side of the reaction kettle, and the reaction kettle is connected to the filtering device through a connecting pipe. According to the invention, the purifier has characteristics of reasonable structure design and convenient use, and can stably purify a ternary precursor at a certain concentration and increase the diameter of the particles in the ternary precursor.

The invention provides a deformable polishing abrasive disc based on a thermoplastic material. According to the abrasive disc, a flexible layer of which hardness is reduced along with temperature rise is added into a structure of the polishing abrasive disc so as to enable the polishing abrasive disc to have certain deformation capacity. In an aspheric optical element machining process, it can be guaranteed that a machining face of the polishing abrasive disc matches a spherical face of an aspheric optical element, and the material removal stability is improved, so that a diameter size of a deformable base plate of the polishing abrasive disc can be increased, a larger-caliber polishing disc can be applied in the aspheric optical machining process, and the machining efficiency is improved; and meanwhile, the flexible layer is made of the thermoplastic material of which hardness is reduced along with the temperature rise, a temperature of the polishing abrasive disc is changed by heating an electric heating sheet so as to control overall rigidity of the polishing abrasive disc, the polishing abrasive disc has surface shape error removal and smoothing effects, an application range of the polishing abrasive disc is widened, and the polishing abrasive disc has the advantages of being simple in structure and low in cost. And the cost is low.

The invention provides a sampling device for early screening of cervical cancer. The sampling device comprises a mounting assembly, an inner pipe structure and connecting assemblies, the inner pipe structure is arranged to be of a cylindrical structure, the mounting assembly sleeves the inner pipe structure, and a supporting device is mounted on the outer wall of the mounting assembly in a surrounding mode; the connecting assemblies are arranged to be of a blocky structure, the connecting assemblies are clamped at the tail end of the supporting device, protective structures are clamped on the outer sides of the connecting assemblies, guiding devices are mounted at the positions between the adjacent connecting assemblies in a winding mode, auxiliary sleeves are mounted on threaded grooves of mounting cylinders in a screwed mode, and when the auxiliary sleeves are screwed down, the auxiliary sleeves and grooves in the outer walls of the mounting cylinders can increase the friction force of the outer wall, so that the auxiliary sleeves can be conveniently screwed down; and when the auxiliary sleeves rotate inwards, the auxiliary sleeves extrude the supporting device, so that the supporting device is shrunk, and the auxiliary sleeves are additionally arranged to assist in controlling the diameter of the outer walls of the guide devices.

The application provides a crystal growth assembly for preparing a single crystal by PVT method, comprising: a crucible and a heating device positioned above the crucible; the heating device is provided with a plurality of concentrically arranged annular heating temperature zones, so that the In the heating and / or crystal growth stage, the axial temperature gradient in the crucible is adjusted by controlling the overall heating temperature of a plurality of concentrically arranged annular heating temperature zones, and by controlling the temperature of each annular heating temperature zone in a plurality of concentrically arranged annular heating temperature zones The heating temperature regulates the radial temperature gradient in the crucible. The device for preparing silicon carbide single crystal provided by this application can control the axial temperature gradient and radial temperature gradient of the temperature field in the crucible to increase the growth rate of the crystal, ensure the stability of the crystal growth environment, and maintain a larger crystal edge diameter ladder, improve edge quality, and obtain larger silicon carbide single crystals at the same time.

The invention relates to application of osteocalcin to the regulation of exosomes of endothelial progenitor cells. The regulation relates to number and diameter distribution of the exosomes. The regulated exosomes can obviously promote multiplication and migration of endothelial cells, and ensure that the endothelial cells rapidly produce vessels. The discovery of a regulation mechanism provides novel thought for the treatment of ischemic diseases.