31results about How to "Change aperture size" patented technology

The invention provides an accurate stereotactic radiosurgery treatment device which belongs to the field of a medical device. The accurate stereotactic radiosurgery treatment device is composed of a radiation device system, a six-dimensional robot treatment bed 1 and a treatment planning system. The radiation device system is composed of a frame 12 and a C-shaped machine arm 5. The frame 12 is provided with a rotating shaft 10. The rotating shaft 10 is connected with a guiderail 9 and controls rotation of the guiderail 9. The C-shaped machine arm 5 is mounted on the guiderail 9 and performs arc-shaped motion along the guiderail 9. One end of the C-shaped machine arm 5 is provided with a radiation source 2. The bottom end of the radiation source 2 is provided with a small machine head 3. The bottom end of the small machine head 3 is provided with a collimator. The other end of the C-shaped machine arm 5 is provided with a telescopic electronic portal imaging device 7 and a movable shielding protecting counterweight 8. A target organ positioning and detecting device 6 is mounted at the side part or the lower part of the six-dimensional robot treatment bed 1. The radiation treatment head of the accurate stereotactic radiosurgery treatment device can perform 90-degree (or + / -45-degree) rotation around an X axis so that rays can be transmitted in a 4pi non-coplanar track.

The invention provides a hydrophilic polyethene microporous membrane and a preparation method thereof, belonging to a polyethene microporous membrane containing blending compatilizer with a polar group, calcium carbonate and thinner and a preparation method thereof. In the preparation method of the microporous membrane, polyethene, blending compatilizer, calcium carbonate and thinner are taken as raw materials; and hydrophilic polyethene microporous membrane is finally prepared by blending processing, membrane pressing by a flat bed presser, quenching by water bath in constant temperature, extracting by extracting agent, acid cleaning, washing and drying. The invention is characterized in that the blended compatilizer with a polar group is selected to react with the calcium carbonate particles, calcium carbonate particles are evenly filled into polyurethane base body through blending processing; and porous structures are formed by the thermal induced phase separation method and the method for removing fillings by acid cleaning. As for the hydrophilic polyethene microporous membrane prepared by the method, the range of the internal average aperture is 0.1-10mu m, the aperture rate is greater than 50% and the contact angle is less than 80 degrees.

The invention relates to a method for preparing hydrophilic polypropylene microporous film. The method includes subjecting low-melting-index polypropylene and diluents in a weight ratio of (20:80) to (80:20), a blending compatilizer containing polar groups and accounting for 0.5% to 20% of the total weight of the polypropylene and the diluents, and a material which is composed of nucleating agents and accounting for 0.05% to 10% of the total weight of the polypropylene and the diluents to solution blending or melt blending at a temperature ranging from 180 DEG C to 210 DEG C to obtain mixed materials; forming film by using a film scraping method or a hot-press method at a temperature of 170 DEG C to 190 DEG C; quenching the film in thermostatic waterbath at a temperature between 0 DEG C and 50 DEG C; extracting the film in an extracting agent to remove the diluents; dipping the film in a hydrochloric acid aqueous solution, and washing the film through distilled water and drying the film to obtain the hydrophilic polypropylene microporous film. According to the hydrophilic polypropylene microporous film prepared by the method, the average bore diameter range is between 0.1 micron and 10.0 microns, poriness is larger than or equal to 40%, and the water contact angle is smaller than or equal to 95 degrees.

The invention discloses an automatic aperture adjusting structure, which comprises an aperture bottom plate, an aperture back plate matched with the aperture bottom plate, and an aperture dial piece arranged between the aperture bottom plate and the aperture back plate and installed on the aperture bottom plate; multiple blades are arranged on the aperture dial piece, and the aperture dial piece is provided with a driving part connected with the driving component; a limiting part for limiting the activity route of the driving part is arranged on the aperture bottom plate or the aperture back plate; the driving component comprises a ratchet ring rotationally arranged on the aperture back plate and a brake ratchet pawl and a driving ratchet pawl; the ratchet ring is provided with a connecting part connected with the driving part; a reset elastic component is further arranged between the ratchet ring and the aperture back plate; the brake ratchet pawl limits the unidirectional rotation ofthe ratchet wheel ring and connected with a first memory alloy element; the driving ratchet pawl is matched with a tooth of the ratchet ring and connected with a second memory alloy element.

The invention relates to the technical field of jewelries, and discloses a stable jewelry drilling device capable of changing a drilling diameter and automatically clamping. The stable jewelry drilling device comprises a base; through the cooperative use of a control panel and a drill piece, the pore size of a jewelry during drilling can be changed, which avoids the need to replace a drill bit foroperation, so that drilling is more convenient, and the work efficiency during drilling is higher; through the cooperative use of a sleeve rod, a clamping plate, a first connecting rod and a second connecting rod, the jewelry is clamped during drilling, so that the stability of the jewelry during drilling is ensured, and the situation that the smoothness of drilling is affected when drilling is unstable is avoided; through the cooperative use of a turntable, a first support rod, a drill rod and the drill piece, the jewelry is drilled automatically, thereby increasing the work efficiency during drilling; and through the cooperative use of a big disk, a small disk and a moving block, two steps of drilling the jewelry and clamping the jewelry are linked, so that the linkage of the whole device is increased and the operation is easier.

The invention belongs to the field of inorganic water treatment agents, and in particular relates to an inorganic mineral water treatment agent and a preparation method thereof. The water treatment agent is prepared from 50-60 parts of natural zeolite, 25-30 parts of red vesuvianite, 8-15 parts of natural fibers, 3-4 parts of ferrite and 1-2 parts of H2O2 water solution with the mass concentration of 35%; the preparation method comprises the following steps: mixing the natural zeolite with the vesuvianite, performing treatment of crushing, washing with acid, radiation in infrared light and the like, further mixing the natural fibers with a mixture of the zeolite and the vesuvianite in vacuum, adding a soluble ferrite solution, later adding the H2O2 water solution, stirring, drying, calcining at high temperature, cooling and drying, thereby obtaining the inorganic water treatment agent. The water treatment agent is relatively large in adsorption space and adsorption capacity, and can solve the problems that a conventional water treatment agent is poor in effect in treating sewage with complex components, can pollute the environment and the like. The water treatment agent provided by the invention is easy to regenerate, is free of secondary pollution, and can be widely applied to purification treatment on the sewage.

The invention provides an aperture switching device, a photographic device thereof and electronic equipment. The aperture switching device comprises a base and a shell, a first light hole is formed inthe base corresponding to an aperture, a second light hole is formed in the shell corresponding to the aperture, the shell covers the base, the base is provided with a rotary connecting part and a sliding groove, and the clamping part is a driving power supply input terminal and is fixed on the base; two ends of a shape memory alloy wire are respectively and correspondingly connected with the clamping parts; a movable bump is connected with the shape memory alloy wire; the elastic part is fixed at the rotary connecting part and is propped against the movable bump; one end part of the opticalaperture switching unit is mounted on the rotary connecting part, a switching groove is formed in the end part, and the switching groove is mounted on the movable bump. Through driving of the shape memory metal wire, the size of the lens light inlet aperture can be changed to adjust the amount of light entering the imaging system.

The invention discloses a camera module and electronic equipment. The camera module comprises a camera main body; a variable aperture assembly which comprises a base, a plurality of blades and a rotating part, the base, the blades and the rotating part are sequentially stacked, the blades are hinged to the base, the blades form a light through hole, the light through hole is opposite to the camerabody, and the blades are in sliding fit with the rotating part; and under the condition that the rotating part rotates, the blades rotate relative to the base, and the hole diameter of the light through hole is adjusted through rotation of the blades. When the blades rotate relative to the base, the aperture of the light through hole of the iris diaphragm assembly is changed, so that the purposeof continuously changing the diaphragm is achieved. Therefore, the camera module can flexibly adjust the aperture according to user requirements, scene changes and other factors, thereby improving theshooting effect.

The invention relates to a porous rare earth titanate heat-isolating material and a preparation method and an application thereof. The porous rare earth titanate heat-isolating material is of a porousstructure and the composition of the material is (Re2O3)X(TiO2)(1-X), wherein Re is at least one of Y and lanthanide elements, and X is equal to 0.2-0.8, preferably 0.4-0.7. The porosity of the porous rare earth titanate heat-isolating material is 10-90% and the pore diameter is 0.1-500 microns.

The invention relates to the field of preparation of catalysts, and in particular to a copper oxide / aluminum oxide composite catalyst, and a preparation method and a special micro-arc oxidation electrolyte thereof. The preparation method of the copper oxide / aluminum oxide composite catalyst comprises the step of putting a pure aluminum sample into the micro-arc oxidation electrolyte including copper acetate to carry out micro-arc oxidation treatment, thus obtaining the copper oxide / aluminum oxide composite catalyst. The copper oxide / aluminum oxide composite catalyst and the preparation method and the special micro-arc oxidation electrolyte of the copper oxide / aluminum oxide composite catalyst have the advantages that the prepared copper oxide / aluminum oxide composite catalyst film layer is level and smooth in appearance, bonding strength between the active matter CuO and the carrier Al2O3 is good, and the active matter dissolution rate is low, so that the copper oxide / aluminum oxide composite catalyst can be repeatedly used for many times; compared with conventional methods, the copper oxide / aluminum oxide composite catalyst can be prepared by one step, so that the working procedure is reduced and the cost is saved.

The invention belongs to the technical field of water jet processing, and relates to an adjustable multi-stage supercharged water jet nozzle. The adjustable multi-stage supercharged water jet nozzle comprises a nozzle core and an inner cone sleeve in threaded fit connection with the nozzle core; the nozzle core comprises a nozzle core tail end external thread part and a nozzle core outer conical surface part which are integrally connected; the nozzle core outer conical surface part is uniformly provided with a plurality of expansion and contraction grooves in the circumferential direction; theinner side of each expansion and contraction groove extends to the center of the nozzle core; the outer side of each expansion and contraction groove extends to the surface of the nozzle core outer conical surface part; a rubber sheet is arranged in each expansion and contraction groove; the inner sides of the rubber sheets are closed to form the water jet nozzle; the center of nozzle core outerconical surface part is provided with a nozzle core water inlet hole in a penetrating manner; and the nozzle core water inlet hole communicates with the water jet nozzle. The water jet nozzle solves the problem that the high-pressure water jet nozzle can not be adjusted and can only be replaced after being abraded, and simultaneously solves the problem of insufficient water pressure of water jet by utilizing multi-stage water energy for pressurization.

The invention relates to manufacturing equipment of a sanitary nursing mattress. The equipment comprises a machine body for conveying upper toilet paper and lower toilet paper, a smashing bin arranged on the machine body and used for smashing wood pulp into wood pulp fibers, an adsorption bed located below the smashing bin, a gluing device located on the upstream of the smashing bin and used for gluing the surface of the lower toilet paper, and a macromolecule discharging roller located on the downstream of the smashing bin. The gluing device comprises a transfer roller rotationally connected to the machine body, a latticed convex edge part is arranged on the outer surface of the transfer roller in a protruding mode, the convex edge part of the transfer roller abuts against the surface of the lower toilet paper, and the gluing device further comprises a gluing mechanism for gluing the convex edge part of the transfer roller. The equipment has the effect of improving the liquid absorption uniformity of an absorber.

The invention belongs to the technical field of hydraulic pumps and discloses a man-powered hydraulic pump with a high-reliability. The man-powered hydraulic pump comprises a cylinder body, a valve body, an oil inlet hole, an oil suction valve chamber, an oil outlet valve chamber and an oil outlet hole, wherein the oil inlet, the oil suction valve chamber, the oil outlet valve chamber and the oiloutlet hole are communicated in sequence and are arranged in the valve body; an oil suction sealing ball is arranged on an oil inlet of the oil suction valve chamber; the oil suction sealing ball is sealed and plugged in the oil inlet of the oil suction valve chamber through a first elastic assembly arranged in the oil suction valve chamber; compared with the prior art, the oil conveying speed ofthe man-powered hydraulic pump is improved by multiple times, the pressure maintaining performance is obviously improved, and the device can be designed to be portable.

The invention relates to a preparation method of a flexible gas sensor for a fabric. The preparation method comprises the following steps of 1, selecting an area on the fabric as a sensor processing area, 2, preparing a coating solution according to the mass ratio of alcohol-soluble phenolic resin to poloxamer being larger than 1: 2 and smaller than or equal to 2: 1, the mass ratio of the sum of the mass of the alcohol-soluble phenolic resin and the mass of the poloxamer to absolute ethyl alcohol being 1: 4, 3, placing the coating solution in a vacuum box for degassing treatment, spin-coating the sensor processing area of the fabric with the degassed coating solution, and placing the fabric spin-coated with the coating solution in a vacuum drying box for vacuum heating and drying, 4, ablating the area, spin-coated with the coating solution, of the dried fabric by using a carbon dioxide laser to obtain porous carbon, and respectively adhering electrode plates to two ends of the area where the porous carbon is located. The gas sensor is combined with the fabric, so that the flexibility and the air permeability of the fabric are kept, and the manufacturing cost of the intelligent protective clothing is reduced.

The invention belongs to the field of alloy catalysts, and particularly discloses a self-optimizating alloy catalyst and a preparation method and application thereof. The preparation method comprisesthe following steps that (1) Ag elementary substance, Cu elementary substance and Al elementary substance are subjected to vacuum melting, AgXCuYAlZ alloy is prepared, wherein X+Y+Z = 100 and the ratio of X to Y to Z is (15-30):(0.1-1):(69-84.9); (2) the alloy is subjected to melt-spinning to preapre an alloy strip; (3) the aluminum is removed from the alloy strip by using acid to obtain an initial catalyst; (4) electrochemical treatment then is carried out on the initial-state catalyst to segregate Cu on the Ag surface, thereby obtaining the catalyst. The alloy catalyst prepared by the invention is a catalytic material with a self-optimizing function, is stable in catalytic performance, is high in current density and catalytic efficiency after being optimized, is suitable for mass production, and is beneficial to industrial application.

The invention provides a sprinkler with the adjustable water outlet pressure. The sprinkler solves the problems that the water outlet pressure of existing sprinklers is changed accordingly when the water pressure is changed and the water outlet area needs to be sacrificed in the adjustment process of the water outlet pressure. The sprinkler comprises a body, a rear cover, a water outlet sleeve and a surface cover, wherein the rear cover, the water outlet sleeve and the surface cover are installed inside the body, and the water outlet sleeve is attached to the surface cover; the surface cover is provided with water outlet holes, and the water outlet sleeve is provided with water flowing holes matched with the water outlet holes; the surface cover is fixedly connected to the rear cover, and a water outlet cavity is defined by the surface cover and the rear cover. The sprinkler further comprises a water pressure switching mechanism, and the water pressure switching mechanism comprises a water outlet plate arranged between the rear cover and the water outlet sleeve and a support arranged between the rear cover and the body; the water outlet plate is provided with pressurization holes corresponding to the water outlet holes in position, and the diameters of the pressurization holes are greater than the diameters of the water outlet holes; the support, the rear cover and the water outlet plate are provided with water inlet holes sequentially communicating with one another, and the water outlet plate is matched with the support and can ascend or descend relative to the water outlet sleeve so that the water outlet pressure can be adjusted.

The invention discloses a drill rod with adjustable drilling diameter, comprising a blade fixing device including a fixing disc, the blade fixing device comprising a plurality of limit pins, a plurality of compression springs and a plurality of baffles, a plurality of all The baffles are circumferentially arranged on the fixed plate, the limit pins are fixedly arranged on the inner sidewall of the baffles, and the compression springs are sleeved on the outer sidewalls of the limit pins, and a plurality of drill knives are arranged in the blade fixing device, A rotating body is coaxially arranged on the fixed plate, and a plurality of balls are arranged between the drill and the rotating body. In the present invention, the position of the spiral body on the rotating rod can be adjusted by adjusting the position of the ball, so that the position of the drill can be controlled, and finally the aperture size of the hole to be drilled can be changed to achieve the effect of rapid expansion; , The different pitches of the second helix and the third helix and the different positions of the spherical grooves can change the rolling position of the balls, and the steel balls can play the effect of stable rolling of the bearing.

The invention belongs to the field of inorganic water treatment agents, and in particular relates to an inorganic mineral water treatment agent and a preparation method thereof. The water treatment agent is prepared from 50-60 parts of natural zeolite, 25-30 parts of red vesuvianite, 8-15 parts of natural fibers, 3-4 parts of ferrite and 1-2 parts of H2O2 water solution with the mass concentration of 35%; the preparation method comprises the following steps: mixing the natural zeolite with the vesuvianite, performing treatment of crushing, washing with acid, radiation in infrared light and the like, further mixing the natural fibers with a mixture of the zeolite and the vesuvianite in vacuum, adding a soluble ferrite solution, later adding the H2O2 water solution, stirring, drying, calcining at high temperature, cooling and drying, thereby obtaining the inorganic water treatment agent. The water treatment agent is relatively large in adsorption space and adsorption capacity, and can solve the problems that a conventional water treatment agent is poor in effect in treating sewage with complex components, can pollute the environment and the like. The water treatment agent provided by the invention is easy to regenerate, is free of secondary pollution, and can be widely applied to purification treatment on the sewage.

The invention relates to a method for preparing hydrophilic polypropylene microporous film. The method includes subjecting low-melting-index polypropylene and diluents in a weight ratio of (20:80) to (80:20), a blending compatilizer containing polar groups and accounting for 0.5% to 20% of the total weight of the polypropylene and the diluents, and a material which is composed of nucleating agents and accounting for 0.05% to 10% of the total weight of the polypropylene and the diluents to solution blending or melt blending at a temperature ranging from 180 DEG C to 210 DEG C to obtain mixed materials; forming film by using a film scraping method or a hot-press method at a temperature of 170 DEG C to 190 DEG C; quenching the film in thermostatic waterbath at a temperature between 0 DEG C and 50 DEG C; extracting the film in an extracting agent to remove the diluents; dipping the film in a hydrochloric acid aqueous solution, and washing the film through distilled water and drying the film to obtain the hydrophilic polypropylene microporous film. According to the hydrophilic polypropylene microporous film prepared by the method, the average bore diameter range is between 0.1 micron and 10.0 microns, poriness is larger than or equal to 40%, and the water contact angle is smaller than or equal to 95 degrees.

The invention discloses a collar for harvesting shimeji mushrooms that reduces side buds, comprising a culture bottle, the upper end of the culture bottle is provided with a bottle mouth, the upper part of the bottle mouth is covered with a rubber sleeve, and the upper end of the bottle mouth is provided with a There is a recovery collar, the recovery collar includes an upper rotating layer, the lower side of the upper rotating layer is provided with a middle control layer, the lower side of the middle control layer is provided with a lower fixed layer, and the upper rotating layer The side of the bottle is fixedly connected with a connecting ring, the cross section of the connecting ring is L-shaped, the middle part of the culture bottle is provided with a humidifying tube, and the humidifying tube passes through the bottle mouth and one end of the harvesting collar is fixedly connected with a water replenisher, A scale bar is arranged on the side wall of the water replenisher. The invention can effectively reduce the growth of the lateral buds of the shimeji mushroom in the culture bottle, thereby improving the overall quality of the grown mushroom, and at the same time, it is convenient to replenish water to the culture bottle after harvesting.

The invention discloses a hypizigus marmoreus harvesting lantern ring capable of reducing lateral buds. The hypsizigus marmoreus harvesting lantern ring comprises a culture bottle; a bottle opening isformed in the upper end of the culture bottle; the upper part of the bottle opening is sleeved with a rubber sleeve; a harvesting lantern ring body is arranged at the upper end of the bottle opening;the harvesting lantern ring body comprises an upper rotating layer; a middle control layer is arranged on the lower side of the upper rotating layer; a lower fixed layer is arranged on the lower sideof the middle control layer; a connecting ring is fixedly connected with the side face of the upper rotating layer; the section of the connecting ring is in an L shape; a humidifying pipe is arrangedon the middle part of the culture bottle; a water replenishing device is fixedly connected to the end, penetrating through the bottle opening and the harvesting lantern ring body, of the humidifyingpipe; and scale strips are formed in the side wall of the water replenishing device. The hypsizigus marmoreus harvesting lantern ring can effectively reduce growth of the lateral buds of hypsizigus marmoreus in the cultivation bottle so as to improve the overall quality of finished hypsizigus marmoreus products, and meanwhile water can be conveniently replenished to the cultivation bottle after harvesting.

The invention discloses a crystal growing furnace which comprises a reaction chamber and a heating device. The reaction chamber comprises a first heat wall and a second heat wall. The first and second heat walls are detachably connected and define a reaction space for crystals. The second heat wall is made of graphite. The heating device is matched with the second heat wall to heat the second heat wall. The first heat wall is made of a high temperature heat-resisting material. In the device, no graphite felts are used for insulation of the reaction chamber, so that the problem of impurity pollution in the reaction chamber caused by using the graphite felts is eliminated, and the background carrier concentration of an epitaxial wafer is greatly reduced. Furthermore, the detachable heat walls adopted are easy to install and convenient to change.