122results about How to "Simple and convenient operability" patented technology

The invention discloses a modularized automatic test assembly system of a rely protection device and a test method of the modularized automatic test assembly system. The modularized automatic test assembly system comprises three layers of system structures: an interface layer, a logic layer and a data layer; the data layer comprises a database and the database is internally provided with a test template and a report template of the rely protection device; the test template is arranged for respectively representing all functions of different rely protection devices of different factories; the report template comprises a test report; a writing position of a test result of the test report is in a user defined mode; through the test template, the system further obtains the evaluation of the performance of the rely protection device; after a test is finished, a test report of the user defined mode can be automatically and immediately generated; and the system finishes an integrated function of testing and evaluating the rely protection device. The modularized automatic test assembly system of the rely protection device and the test method of the modularized automatic test assembly system, disclosed by the invention, have the beneficial effects that the function is complete, and the site problems that the site time testing time is long, a test environment is complicated, the artificial judgment can be wrong and the test report can not be written in time are solved.

A novel bridge device disclosed by the present invention comprises an electric connection base, a bottom rack is arranged at the bottom of the electric connection base, and a clump weight is arranged in the bottom rack. The electric connection base is equipped with a plugging groove of which the opening is leftward, and an electric connection hole is arranged at the right end part of the plugging groove. A fastening groove which is communicated with the electric connection base externally and of which the opening is leftward is arranged in the bottom end part of the plugging groove, and a first chute groove is arranged in the bottom end part at the right side of the fastening groove. The novel bridge device of the present invention is simple in overall structure and is suitable for being popularized and used, the opening and closing operation of the electric connection hole are simple and convenient, the electric shock accidents during the bridge construction process are reduced effectively, and the life safety of the people is guaranteed effectively.

The invention provides a method for performing extraction separation on cobalt and nickel by using a microfluid technology. The method comprises the following steps of: uniformly mixing an extraction agent and diluent which are subjected to homogeneous phase saponification by using a mixed material liquid of Co<2+> and Ni<2+>, using 2-ethyl cthylhexyl phosphonate mono 2-ethyl cthylhexyl ester as the extraction agent and using No.260 solvent oil and using the extraction agent and the diluent as an oil phase; introducing the water phase and the oil phase into a micro-reactor by virtue of two flow pumps; mixing the two phases in the micro-reactor and performing extraction reaction at 25-50 DEG C; and collecting a product at an outlet of the micro-reactor and standing for separating the phases to ensure that Co<2+> enters the oil phase and Ni<2+> stays in the water phase so as to realize extraction separation of cobalt and nickel. According to the method, continuous flow micro-reactor with an enhanced hybrid channel structure is adopted, the extraction separation of cobalt and nickel is carried out, and the reaction time is shortened to be within a micro-second level range, so that single-level cobalt extraction efficiency is obviously improved, and the extraction levels are reduced; and moreover, standing layering on the water phase and the oil phase can be quickly carried out without any emulsion phenomenon.

The invention discloses a new energy source automobile device, which comprises a charging pile body, wherein hanging plates are symmetrically arranged in the front and back sides of the upper part position of the right end surface of the charging pile body; a jack is formed in the left end surface of the charging pile body; an electric contact block is arranged on the right end wall of the jack; afirst slide moving cavity is formed under the jack in the charging pile body; a second slide moving cavity is formed in the right end of the jack in the charging pile body; a third installing grooveis formed between the right end of the first slide moving cavity and the lower end of the second slide moving cavity; a through hole is formed between the jack and the first slide moving cavity in a mutual communication way; a plug plate is connected into the through hole in a slide moving matching way. The new energy source automobile device has the advantages that the integral structure is simple; the operation of the whole device is safe and reliable; the power-on and power-off operation of the jack is simple and convenient; the use cost is reduced; the occurrence of electric shock accidents in the existing life is effectively reduced; the life safety of people is guaranteed; the power supply stability is high.

The invention provides a three-phase load transfer device, comprising an input module, an input measurement module, a phase sequence adjustment module, a phase sequence display module and an output module, wherein the input module provides the input of the three-phase alternating current, and the input phase sequence of the three-phase alternating current is ABC; by measuring the levels of the current and the voltage of the three-phase alternating current which is input into the input module, the input measurement module judges whether the three-phase load is imbalanced or not; in order to provide three output phase sequences, namely ABC, BCA and CAB, the phase sequence adjustment module adopts three independent contactors for the three-phase current of which the input phase sequence is ABC; when the input measurement module detects the imbalance of the three-phase load by measurement, the operation of switching the output phase sequences is carried out, otherwise, outputting is carried out according to the original phase sequences; the phase sequence display module provides three indicator lights, and each indicator light corresponds to one of the three output phase sequences, namely the ABC, the BCA and the CAB, so as to display the current output phase sequence; and the output module outputs the three-phase alternating current into the load after the phase sequence adjustment module adjusts the phase sequences.

The invention provides an electronic cabinet and an air conditioner. The electronic cabinet comprises a cabinet body, a panel and a cover plate, wherein the cabinet is a cavity with one side open, a circuit board is arranged inside the cavity, the panel is detachably arranged at the opening of the cabinet body, a first detection window is arranged at the position of the panel, which corresponds to the circuit board, a flange is arranged on the periphery of the first detection window, is located outside the cavity and defines a water-retaining groove with the panel, the cover plate can be rotatably arranged on the panel, the cover plate is provided with a second detection window with the shape identical with that of the first detection window, and the cover plate can rotate to enable the first detection window and the second detection window to coincide or be staggered to open or close the first detection window. According to the electric cabinet, due to the facts the flange is arranged on the periphery of the detection window and the water retaining groove is formed by the flange and the outer surface of the panel, water drops on the panel can flow out along the water retaining groove, accordingly water can be effectively prevented from permeating through the cabinet body along the panel and further waterproofness of the electric cabinet is improved.

The invention relates to the technical field of agricultural underground irrigation, in particular to an energy-saving and environment-friendly three-dimensional underground infiltration irrigation device. The energy-saving and environment-friendly three-dimensional underground infiltration irrigation device comprises a vertical tank body, wherein the upper end and the lower end of the vertical tank body are provided with an upper sealing cover and a lower sealing cover respectively; the vertical tank body is provided with a plurality of infiltration pipes for infiltration irrigation around from top to bottom; the vertical tank body is connected with the infiltration pipes to form an infiltration irrigation unit; a water inlet pipe is arranged on the vertical tank body positioned above theinfiltration pipes; and a water inlet valve is arranged on the water inlet pipe. The energy-saving and environment-friendly three-dimensional underground infiltration irrigation device provided by the invention is not limited by regions, is more convenient and flexible to get water, and can not only connect with a pressurized pipeline, but also directly inject water manually, which fully solves the problem that conventional irrigation cannot be implemented due to hardening of road surfaces and uneven mountain slopes in urban greening, and greatly improves the survival rate of afforestation indesertified land.

The invention discloses a method for identifying material of a leather product. The method comprises the following steps of S11, selecting a leather sample for making an infrared spectrogram base; S12, putting the leather sample under the standard atmosphere condition, and standing; S13, after standing, removing a coating at the surface of the leather sample, wherein the removal thickness of the coating is equal to 1/3-2/3 of the thickness of the leather sample; S14, scanning and determining the coating-removed leather sample by an infrared spectrograph, so as to obtain the infrared spectrogram of the leather sample; S15, repeating the steps S11 to S14, and making the infrared spectrogram base of a standard material; S21, obtaining the infrared spectrogram base of a to-be-tested leather sample by the steps S11 to S14; S22, comparing the infrared spectrogram of the to-be-tested leather sample and all infrared spectrograms in the infrared spectrogram base of the standard material, and judging the material with highest similarity in the infrared spectrogram base as the material type of the to-be-tested leather sample. The method for identifying the material of the leather product has the advantages that the operation is simple, and the identification is accurate.

The invention relates to a decolouring method of prepared aqueous nitric acid solution. Ammonium carbonate is used as a decolorising agent of nitric acid, and nitric acid is decolorized and bleached by mixing ammonium carbonate and nitric acid. An apparatus of the method comprises an acid preparation tank, an acid cooler, an acid circulating tank and an ejector; the acid preparation tank is provided with a gas outlet, a decolorizing agent charging door, a dilute nitric acid charging door, a dense nitric acid charging door, a recycle acid outlet and a recycle acid inlet; a cooled medium inlet of the acid cooler and the recycle acid outlet of the acid preparation tank are communicated; a cooled medium inlet of the acid cooler is communicated with the recycle acid inlet of the acid preparation tank; the gas outlet of the acid preparation tank is communicated with an extracted medium inlet of the ejector; an outlet of the ejector is communicated with the acid circulating tank; an outlet of the acid circulating tank is communicated with an medium inlet of the ejector. The decolouring method is capable of preparing nitric acid products with different concentration and qualified appearance, and meeting the requirements of different clients; by-product acid mist generated in preparing processes is less; the decolouring method is easy to control, is safe and has environmental protection performance; and the apparatus is convenient for maintenance.

The invention provides a rotating angle measuring device. By arranging a detecting module, rotating arc length data 1 of any point on a detected rotating body are directly or indirectly obtained, anda data processing module connected with the detecting module is arranged and used for calculating rotating angle data n and central angle radian data theta of the detected rotating body according to an arc length formula. The rotating angle measuring device is simple and feasible in structure, the technology of all constituting components is mature, and the components can be rapidly developed andput into a market for use. In addition, the device is wide in application range, high in precision and easy and convenient to mount and operate, and further has the excellent characteristics of beingsmall in size, low in weight, capable of achieving quick response and the like. In addition, the invention further provides a rotating angle measuring method.

The invention belongs to the technical field of three-dimensional scanning, and particularly relates to a three-dimensional scanning device. The three-dimensional scanning device comprises a base, wherein the base is provided with an inner ring mechanism and an outer ring mechanism; the inner ring mechanism is provided with a first rotating assembly and an annular rotating plate; the first rotating assembly comprises a first case; the first case is provided with a first motor; the first motor is provided with a first gear; the annular rotating plate is provided with rotating teeth; the annularrotating plate is provided with a scanning camera; the inner ring mechanism is provided with a rotating rod; the outer ring mechanism is provided with a cross ring groove; the cross ring groove is connected with a cross sliding block in a sliding manner; the base is provided with a supporting column; the cross sliding block is provided with a clamping jaw mechanism; a cavity is formed in the base; the base is provided with a second rotating assembly; the second rotating assembly comprises a straight rack and a second case; the rotating rod is connected with a second gear; the cavity is provided with a positioning groove; the straight rack is provided with a hinging seat; the hinging seat is hinged to a hinging rod; a second motor is arranged in the second case; the second motor is connected with a rotating disc; the rotating disc is provided with a connecting rod; and the connecting rod is hinged to the hinging rod.

The invention discloses a clamping device for a rubber belt. The clamping device comprises a fixed support, wherein a rubber belt clamper is installed on the fixed support; the rubber belt clamper comprises an upper clamping beam, a middle clamping beam and a lower clamping beam; a passing hole for an upward rubber belt is arranged between the upper clamping beam and the middle clamping beam; a passing hole for a downward rubber belt is arranged between the middle clamping beam and the lower clamping beam; the upper clamping beam and the middle clamping beam, as well as the middle clamping beam and the lower clamping beam are connected via fasteners; and the upper clamping beam, the middle clamping beam or the lower clamping beam is installed on the fixed support. The clamping device for the rubber belt disclosed by the invention has the advantages of being practical, time-saving and labor-saving, low in cost, good in safety and the like, and can greatly increase the installation and placement speeds of the rubber belt.

The invention relates to an automatic test system of T/R (Transmitter and Receiver) assemblies, and belongs to the technical field of radar detection devices. The system comprises a frequency synthesizer, a waveform generator, a four-in-one receiver, a communication controller, an autonomous software, and the like. The waveform generator is a direct digital synthesizer DDS. A clock signal source of the frequency synthesizer provides a working clock of 15MHz for the waveform generator, the communication controller, and an analog-to-digital converter. A local oscillator signal source provides local oscillator signals of the four-in-one receiver. An excitation signal source is used for providing an excitation signal and an analog echo signal for a tested T/R assembly through a through end ofa directional coupler and coaxial switches S1-S9. The excitation signal source provides a test signal for the tested T/R assembly through a coupling end of the directional coupler and a first power divider, and provides a reference signal for the system for system calibration. According to the automatic test system of the T/R assembly, switching of all channels and frequency points, data storage,calculation, and correction value writing can be automatically completed; human intervention is reduced; occupied instruments are few; the test is high in quality and efficiency; and the operate and maintain are convenient to be performed.

The invention provides an oral cavity anesthesia needle stable in medicine applying. The oral cavity anesthesia needle comprises a needle cylinder, wherein a limiting plate is arranged above the needle cylinder; a connecting rod is fixed to the lower end of the limiting plate; an electromagnet is connected to the middle part of the connecting rod, and is fixed to the upper wall of the needle cylinder; a connecting spring is fixed to a permanent magnet; the permanent magnet is embedded in a piston; the piston is arranged in the inner surface of the needle cylinder in a sliding manner; a controlswitch is arranged below a movable power source interface, and is fixed to the outer wall of the needle cylinder; a rubber handle is fixed to the needle cylinder; a medicine transporting head is arranged below a cone head of the needle cylinder; an illumination lamp seat is mounted on the left side of the medicine transporting head, and is placed below the cone head of the needle cylinder; a connecting cavity is formed between a movable connecting head and the medicine transporting head; and a needle head is mounted below the movable connecting head. The oral cavity anesthesia needle disclosed by the invention is novel in structure, easy and convenient to use and operate, high in practicality and long in service life.

The invention provides a robot joint structure and a robot joint structure assembly method. The robot joint structure comprises a rocker arm and a base, the rocker arm comprises a mounting cavity, therobot joint structure comprises a driving motor, a wave generator and a reducer rigid and soft wheel member, and the wave generator is mounted to the reducer rigid and soft wheel member; the reducerrigid and soft wheel member is installed in the manner that a first part is fixed to the rocker arm and a second part is fixed to the base, and the reducer rigid and soft wheel member is located at afirst end opening of the mounting cavity; and the driving motor is inserted into the mounting cavity from a second end opening of the mounting cavity and is fixed to the rocker arm, and an output shaft of the driving motor is directly in matched transmission with an inner hole of the wave generator. By means of the robot joint structure and the robot joint structure assembly method, the output shaft of the driving motor is directly connected to the inner hole of the wave generator, the size of the robot joint structure can be decreased, and the designability of the applicable range and the volume is improved.

The invention discloses an electric power supply device including an electricity receiving part connected with electric equipment through a cable, and a power supply part arranged in the wall body. The electricity receiving part comprises a push plate, a plug is arranged on the right end face of the push plate, a first push inclined surface is arranged on the left side of the top end face of the push plate, the power supply part comprises an outer shell, a sliding cavity is formed in the outer shell, and a groove is formed in the bottom of the left end face of the outer shell. According to theinvention, the structure is simple, the power supply stability is good, an electric shock accident is avoided while the electricity receiving part is inserted or pulled out; the life safety of peopleis guaranteed, the whole device is safe and reliable, the locking and unlocking operation of the push plate and the plug is simple and convenient, and when the lock is unlocked, the pushing plate ispushed leftwards by a distance through an annular sliding block, so that the electricity receiving part can be pulled out conveniently and effortlessly.

The invention provides a polyethylene plastic film cut-off and winding device for food cling wrap films. The polyethylene plastic film cut-off and winding device comprises a cut-off box; the cut-off box is cuboid, and made of steel, and the outer wall of the left and right lower parts of the cut-off box are provided with support bases by welding; a transmission belt pulley is connected to a film roller through a bracket; the right side of the film roller is provided with a film inlet; an electromagnet is inlaid and fixed in a fixed rod; the lower end of a connecting spring is connected to a permanent magnet; the lower end of a telescopic rod is connected to a mounting feed wheel; the middle part of the lower wall of a cut-off bearing block is provided with a cut-off cavity; a guide cavityis formed in the upper wall of the cut-off bearing block, and a cut-off tool is arranged above the guide cavity; a film outlet is formed in the right wall of the cut-off box, and the right side of thefilm outlet is provided with oblique rods; and two oblique rods are provided, and welded and fixed to the right outer wall of the cut-off box, and the lower ends of the oblique rods are provided withguide blocks by welding. The polyethylene plastic film cut-off and winding device provided by the invention is easy to use and operate, has good cut-off effect for plastic films, and is applicable for small and medium-sized enterprises to use and promote.

The invention relates to a drying oven building process. The process comprises the following process steps of (1) building a furnace; (2) drying the furnace; (3) starting the furnace for smelting; (4)culturing the furnace; (5) discharging molten iron from the furnace for the first time; and (6) starting the cold furnace. The drying oven building process has the characteristics of high fire resistance, good slag resistance, stable high-temperature volume, wear resistance, scouring resistance and simple and convenient construction operation, and particularly has the environmental protection feature of being small in generated solid waste during use.

The invention discloses a rapid food detection equipment, which comprises a detection box, a sample processing device, a sampling device and a detector. The centrifuge cylinder inside the liquid collection cylinder has a number of centrifugal holes through the centrifuge cylinder; a sampling device is arranged inside the detection box, and the sampling device includes a number of burettes, and the burettes are respectively connected to the The liquid collection cylinder is arranged in communication, and several detectors are arranged under the burette, and the several detectors are respectively arranged corresponding to each burette; the invention provides a food detection device, which can effectively save detection time and improve detection speed.

The invention relates to a sewage pretreatment integration device. According to the characteristics of rural towns and residential communities, sewage treatment equipment needs to be miniaturized and generalized, and is designed through research; grille intercepting, sand settling and regulating pool design are integrated; the traditional three-unit operation mode is changed. The traditional grid design is changed into a grid lifting basket design in the device; the manual operation is used; no mechanical equipment is used; the maintenance is not needed in the operation process. A sand settling pool uses an aeration rotational flow vertical flow sand settling mode in the design; the sand settling is accelerated through an air flow rotating effect; the sand discharging adopts a gravity sand discharging mode; no mechanical equipment is installed; the maintenance is not needed in the operation process. For a regulating pool in the design, a submersible pump is arranged in the regulating pool for lifting sewage into a sewage treatment device; a flow pushing stirrer is arranged; through the effect of anaerobic bacteria, organic matters are subjected to hydrolysis, acidification and methanation; the organic matters in wastewater are removed; the biodegradability of the sewage is improved; the subsequent aerobic biological treatment is favorably realized.

The invention relates to the technical field of bridge precast structure lifting, in particular to a precast beam precise lifting device and a method thereof. The precast beam precise lifting device is used for lifting a precast beam and comprises supporting pieces, buffering plates, a carrying pole beam and steel wire ropes; during lifting, the supporting pieces are arranged at corners of the bottom of the precast beam so that the precast beam can be limited and supported; the buffering plates are arranged on flanges of the precast beam and used for positioning the steel wire ropes and buffering the acting force of the steel wire ropes to the precast beam; the carrying pole beam is located at the lifting point; and the lifting device completes precise lifting of the precast beam by winding the steel wire ropes around a first slide block, a second slide block and clamping grooves of the buffering plates. The lifting device is easy to manufacture, capable of achieving cyclic utilization, and suitable for different beam lengths, meanwhile, lifting is easy and precise, constructors can complete precise lifting only through easy operation, the top-heavy phenomenon during beam lifting is completely avoided, in addition, application is wide, the carrying pole beam does not need to be replaced during lifting, the lifting cost is greatly reduced, and the precast beam lifting efficiencyis improved.

The invention relates to a vacuum adsorption device, which is used for assembling two magnetic steel tiles in a motor shell with a magnetic steel tile positioning block. The device comprises a mounting bottom plate, a placement column, a second vacuum pipeline, a third vacuum pipeline, a first vacuum pipeline, a right vacuum meter and a left vacuum meter, wherein the placement column is fixedly connected to the bottom surface of the mounting bottom plate; the outer edge of the placement column is fixedly connected with the magnetic steel circumferential positioning block and is also provided with a first square groove and a second square groove which are symmetrically distributed on the two sides of the magnetic steel circumferential positioning block; the right vacuum meter is communicated with the second vacuum pipeline and the third vacuum pipeline; and the left vacuum meter is connected and communicated with the first vacuum pipeline. The vacuum adsorption device has the advantages of rational, compact and simple structure, easiness for manufacturing, low cost and convenience for use; and by replacing the placement columns of different diameters, vacuum adsorption of the various magnetic steel tiles of different specifications and automatic detection for existence and correctness of the specification of the magnetic steel tiles before assembly can be realized.

The invention discloses a novel medical treatment examination chair. The chair comprises an installation base. A pair of movable stabilization mechanism are arranged on two sides of the base part of the installation base. A support column is fixedly installed in the middle part of the top of the installation base. A seat plate is fixedly installed on the top of the support column. A first fixed shaft is fixedly connected to the right side of a seat plate. A leg placing plate is movably connected to the surface of a first fixed shaft. A first movable connection piece is fixedly connected to themiddle part of the leg placing plate. A pedal plate is fixedly connected to the right side of the leg placing plate. According to the invention, by setting a rotation seat, a third fixed shaft, a connection plate, an air pressure telescopic cylinder, a driving mechanism and a pushing rod, the examination chair can be used as an examination chair and also an examination bed; and it is simple and convenient to use and operate the chair, so use requirements of a medical treatment worker can be met.

The invention discloses a water cup. The water cup comprises a cup body, an electricity connection handle which is fixedly connected to the cup body through a cable and a power transmission seat which is in cooperation connection with the electricity connection handle; a cup port is arranged on an left end surface of the cup body, a handle is arranged on a right end surface, and a cup cover is arranged on an upper top in a manner of opening and closing; an inserting column is arranged in the middle portion of the right end surface of the electricity connection handle; two inserting rods are correspondingly arranged on the front side and on the back side of the inserting column and are arranged on the right end surface of the electricity connection handle; a position locking groove is arranged on the inner side end surface of each inserting rod; a first guiding surface is arranged on the inner side of the right end of each position locking groove; and a second guiding surface is arranged on the outer side of the right end surface of each inserting rod. The water cup is simple in structure and high in power supply stability and effectively reduces electrocution accidents during water boiling and guarantees people's safety. The unlocking of the electricity connection handle is realized through control of a driving machine. The unlocking of the electricity connection handle and push-out disconnection of the inserting rods from cooperation connection with an electricity connection recessed hole are realized. The water cup is simple and convenient in power on and power off operations.

The invention relates to the technical filed of medical apparatus and instruments for the department of orthopaedics, in particular to a bone fracture plate for fixing in all directions. The bone fracture plate comprises a locking plate main body and universal locking holes formed in the locking plate main body, and the hole walls of the universal locking holes are provided with superposed spiral threads and interrupted spiral grooves. According to the bone fracture plate, staggered teeth are adopted to achieve the principle of universal, locking nails can be screwed in different directions by a doctor according to different fracture conditions, the better stability can be achieved, the universal without dead zones in any angles and swing in a wide-angle range can be achieved, and thread locking strength is greatly improved.

The invention discloses a semi-automatic water pump performance test platform. The platform lifting and falling are completed by an oil cylinder, and meanwhile, a platform is positioned by four guide pillars fixed under the platform; gear and rack structures performing opposite movement are adopted, so that the four guide pillars are driven to move simultaneously, and the platform lifts or falls horizontally and is not inclined; with the adoption of thin wall sleeve structures, the guide pillars can be tightly clamped at any height, the platform and a base are connected without gaps, and the problem of vibration of the platform is completely solved; with the adoption of the pressurized oil cylinder, the guide pillars are tightly clamped by the thin wall sleeves when the system is under low working pressure; the lifting displacement is digitally displayed, the automation degree and the accuracy are high, observation is facilitated, and the operation is simple and convenient; hydraulic lifting is adopted to replace original electric screw lifting, an electric appliance fault caused by accidental water leakage is avoided, the existing defects of the water pump test platform are overcome, and the test requirements of various types of centrifugal water pumps are really met.

The invention discloses a gas cylinder type pressure-stabilizing dual-mode oxygen supply device. The gas cylinder type pressure-stabilizing dual-mode oxygen supply device comprises a gas cylinder, a nasal oxygen tube and an integrated valve mounted on the gas cylinder, wherein a nasal suction joint on the nasal oxygen tube is inserted into a nasal cavity of a user; a gas outlet outer joint and a gas suction outer joint of the integrated valve are connected with a gas inlet of the nasal oxygen tube; the integrated valve comprises a valve body, a valve cover, a filling module, a flow regulatingmodule and a pulse oxygen supply module, wherein the filling module, the flow regulating module and the pulse oxygen supply module are mounted on the valve body and the valve cover; oxygen in the gascylinder passes through the filling module and the flow regulating module and then is output by the pulse oxygen supply module; the pulse oxygen supply module comprises a gas inlet unit, a gas outletunit and a gas suction unit; and the gas inlet unit comprises a sixth gas channel and a seventh gas channel which are used for feeding gas through the same gas inlet source. According to the gas cylinder type pressure-stabilizing dual-mode oxygen supply device, all mechanical parts are adopted to realize continuous and pulse dual-mode oxygen supply, and a pressure stabilizing module and the filling module are integrated inside, so that the device structure and gas guide tube connection are simplified, and therefore, use of the user is convenient.

The invention discloses a fiber drawing heat table and a small-angle laser scattering instrument using the same. The fiber stretching heat table includes a body and a mechanical stretching device arranged on the body; the mechanical stretching device includes a fixing unit and an adjusting unit, and the high polymer fiber material sample is fixed on the first fixed end and the second fixed end of the mechanical stretching device. end, and the first fixed end and/or the second fixed end can move relatively along its line, and the polymer fiber material sample is stretched with the relative movement of the first fixed end and/or the second fixed end; the adjustment unit The adjusting unit is arranged on the first fixed end and/or the second fixed end, and drives the first fixed end and/or the second fixed end to move. The small-angle laser scattering instrument includes a fiber drawing heat station, a laser device, a polarization device, a camera device, and an analysis device. The invention can observe, analyze and collect the corresponding change of the spherulite growth process and the corresponding change data and spectrum of the small-angle laser scattering pattern when the length of the sample to be tested is stretched and changed.

The invention discloses a regeneration cycle method of an acidic etching solution. The regeneration cycle method comprises the following steps that S1, an acidic etching waste solution generated on anacidic etching line of a PCB is collected into an etching waste solution tank; S2, the waste solution in the etching waste solution tank is conveyed into an electrolytic cell, and copper ions in thewaste solution is precipitated to form electrolytic copper sheets through electrolysis action in a cathode region; S3, waste solution in an anode area of the electrolytic cell is conveyed to an acid mist absorption cylinder; S4, chlorine gas is conveyed into the waste liquid in the acid mist absorption cylinder, and an regenerated etching solution is prepared through the reaction with the chlorinegas; and S5, the regenerated etching solution in the acid mist absorption cylinder is conveyed to the acidic etching line (developing-etching-stripping (DES)) for being used in an etching process torealize the regeneration cycle of the acidic etching solution. According to the regeneration cycle method, the reuse rate of the regenerated etching solution can be enabled to reach to 100%, the addition of hydrochloric acid and an oxidant is reduced by about 80%, and the material cost is greatly reduced.

The invention relates to a threaded hole aligning method for automobile production and assembly. The method is characterized in that a B1 hole positioning column is adjusted to move to the inner sideof a support frame body, a center line of the B1 hole positioning column is enabled to be positioned on a plane a and is arranged in a radial direction of an A mounting shaft, the plane a is a plane where a center line of the A mounting shaft and a direction a are positioned, the direction a is a hole center line direction of a threaded hole after a through hole and the threaded hole are arrangedin an aligned mode, the B1 hole positioning column is adjusted to rotate around the center line of the A mounting shaft, when the B1 hole positioning column coincides with a hole center line of the threaded hole, a local column body of the B1 hole positioning column is adjusted to be inserted into the threaded hole, and the B1 hole positioning column continues to be adjusted to rotate, so that theA mounting shaft is driven to rotate to adjust the hole center line of the threaded hole to a preset state, and then the B1 hole positioning column is pulled out of the threaded hole. According to the method, equipment is simple and convenient to use and operate and high in automation level.