32 results about "Single stage" patented technology

To provide a system capable of operating re-pellet production and PP band production from a simple flexible container in an almost unmanned state.SOLUTION: This system is equipped with a first single stage extruder 2 for pelletizing the crushed product of a used simple flexible container bag 1 and the single stage extruder 2 has a cylinder 21, a laser filter, a dual piston screen changer 3 and a die part 24. The crushed product supplied to the single-stage extruder 2 together with pellets as necessary is melted at a temperature of 190 °C or higher and 230 °C or lower, sewing threads contained in the melted crushed product are removed with a screen of 120 mesh or less using a laser filter, and foreign matter is removed with a screen of 120 mesh or less using a screen changer 3 or the like. The first recycled resin melt from which the sewing threads and foreign matter have been removed is pelletized in the die part 24.SELECTED DRAWING: Figure 2

The application relates to the technical field of high-speed centrifugal blowers, and discloses a single-stage air-floating blower which comprises an outer shell body, an inner shell body, a first end cover, a second end cover, a third end cover, a fourth end cover, a stator, a rotor shaft, a thrust disc, a volute body, a gas compression impeller, a main fan, an auxiliary fan, a radial air-floating bearing and an axial air-floating bearing. The main fan is arranged to cool the stator, the rotor and the radial air-floating bearing, the auxiliary fan is arranged to cool the axial air-floating bearing, and after the auxiliary fan cools the axial air-floating bearing, the cooling gas in the channel can flow into the cooling channel of the main fan. Compared with the previous air-floating blower scheme, the cooling efficiency between the stator and the rotor is improved, and the air amount entering the axial air-floating bearing is increased by arranging the auxiliary fan.

The invention provides a fan and electric equipment, and belongs to the field of fans. The fan comprises a centrifugal impeller, an air inlet cover, an axial flow impeller and a fluid director. The air inlet cover is arranged on the outer side of the centrifugal impeller in a covering mode and provided with an air inlet located in the upstream of the centrifugal impeller and an air channel communicated with the air inlet and used for guiding airflow to be exhausted in the axial direction of the draught fan. The axial flow impeller is arranged at the downstream of the air duct and is used for doing work on air flow exhausted by the air duct; the fluid director is arranged on the downstream portion of the axial flow impeller and used for guiding airflow exhausted from the axial flow impeller to flow in the axial direction of the draught fan. Compared with a single-stage acting structure, the fan and the electric equipment provided by the invention are more beneficial to improving the overall pressure rise and suction capacity and reducing noise, so that airflow is stably output in the axial direction, and the quality of an airflow outlet flow field and the energy utilization efficiency are improved.

Preform design is a crucial step in hot forging of metals. Embodiments of present disclosure provide a method and system of generating preform design for single stage hot forging of metals. The method optimizes the preform geometry using three key aspects: geometry, grain size, and forging force by a multi-objective optimization technique. Initially, parameters of a preform of a product and a single stage hot forging press are obtained which are used to generate initial set of geometric variations of the preform using a multi-objective optimization technique. This set is refined iteratively for a predefined number of iterations. At each iteration, a fitness value associated with each geometric variation is computed based on geometry, grain size, and force fitness value, and a new set of geometric variations are generated based on the fitness value which is used in the next iteration.

The utility model relates to a kind of evaporators of high-efficiency gas-liquid separation, a kind of evaporators of high-efficiency gas-liquid separation, including first cylinder and the first head connected in the bottom of the first cylinder, the evaporator further includes second head, the second head is covered in the first head portion and with the first head forms first cavity, in the second head surface also be provided with the first steam inlet of first cavity.This embodiment's high-efficiency gas-liquid separation evaporator is heated twice by using first cavity design, that is, by the first head and second head form first cavity, by setting first steam inlet in first cavity, the problem of insufficient heating efficiency of traditional single stage is solved, so that the material not fully separated obtains supplemental heat energy, fully separates again, improves production efficiency and precision.

The present application relates to the technical field of carbon emission in new energy comprehensive utilization, and provides a wind-solar-storage hydrogen-ammonia-alcohol project full life cycle carbon emission quantification method and system, through collecting activity data, carbon emission factor data and project design life of each stage of the project life cycle, determining the full life cycle accounting boundary covering the collection of raw materials to the end of life, and respectively carrying out carbon emission quantification for the early preparation stage, construction stage, operation and maintenance stage and decommissioning stage, finally the total net carbon emission of the project full life cycle is obtained by summarizing, so that the characteristics of the wind-solar-storage hydrogen-ammonia-alcohol project system, such as complex composition, multiple links and various data types, can be targeted, a unified carbon emission quantification path with stage corresponding relationship is established, the problems of unclear boundary and incomplete results caused by the existing method of only accounting for single equipment, single process or single stage are avoided, and the systematization and integrity of the full life cycle carbon emission accounting are improved.

The invention relates to a concrete skewback segment crack simulation analysis method, and belongs to the field of concrete construction. According to the technical scheme, the concrete skewback segment crack simulation analysis method comprises the following steps that S1, simulation analysis basic conditions are determined, specifically, concrete damage parameters are set, and finite element software is selected; s2, constructing a concrete skewback segment simulation model by adopting an extended finite element method, defining a level set function to characterize a crack interface through a level set method, and constructing a displacement function by adopting a discontinuous shape function; s3, setting a concrete crack initiation criterion and a concrete crack propagation direction criterion; and S4, anti-cracking simulation analysis is conducted on the construction stage and the operation stage of the skewback section, and the cracking state and stress field distribution of skewback section concrete are obtained. According to the method, the anti-cracking performance under the load effect in the operation stage is evaluated, the whole-stage cracking state and the stress field distribution rule are output, a whole-cycle data support is provided for engineering practice, and the problem that single-stage analysis and evaluation are one-sided in the traditional technology is solved.

The utility model discloses a kind of high-performance single-stage transmission gearboxes, it is related to gear box field, including gear box and the high-speed shaft being set to gear box inside, the outside wall of gear box is equipped with heat sink by bolt fixation;The side of gear box is equipped with oil inlet pipeline, and the one end of oil inlet pipeline is fixedly provided with oil inlet flange, and the pipe wall of oil inlet pipeline is fixedly provided with multiple branch pipes, and the one end of multiple branch pipes is fixedly provided with pipe joint, and the top of gear box is fixedly provided with multiple lubricating passages, and lubricating passage is communicated with the oil tank of each part in gear box needing lubrication.The utility model improves heat dissipation efficiency by heat sink and external circulation lubrication design, reduces heat accumulation;Adopt high-speed bearing configuration and conical surface sealing structure, solve bearing failure and oil leakage problem under high speed;Gear modification reduces noise, welding joint inner baffle prevents air-permeable cap oil leakage, and can be modified using existing casting box, save cost.

1. Name of the designed product: pipe pump (vertical single stage). 2. Use of the designed product: for conveying liquid on the pipe. 3. Design points of the designed product: in shape. 4. Picture or photo best showing the design points: perspective view 1.

This invention discloses a control method for a assignable joystick for stage equipment, comprising the following steps: S1, dynamically assigning control of the physical joystick to a single stage device or a predefined equipment group consisting of multiple stage devices based on the stage control interface; S2, automatically loading the corresponding control mapping rules and joystick behavior configuration according to the assignment target; S3, adaptively and dynamically adjusting the force feedback intensity, dead zone size, and stroke damping of the physical joystick according to the device type and real-time load of the assignment target to provide a matching device operation feel; S4, sampling the analog signal generated by manipulating the physical joystick through a high-precision ADC and converting it into control commands; S5, sending the control commands through the device control channel to drive the single target device or target device group to move smoothly according to an S-shaped speed curve, and updating the real-time status data of the device and the control assignment information of the joystick to the global status data model.

The dental handpiece telescopic handpiece comprises a speed reduction part and a telescopic part, the speed reduction part comprises a transmission shaft and a gear, one end of the transmission shaft is connected with a power source, and the other end of the transmission shaft is connected with a connecting gear; the telescopic part comprises a fixed transmission shaft, a telescopic assembly and a movement assembly, one end of the fixed transmission shaft is connected with the gear, the other end is connected with one end of the telescopic assembly, and the other end of the telescopic assembly is connected with the movement assembly; the telescopic assembly comprises a telescopic transmission shaft and a shaft sleeve sleeving the telescopic transmission shaft, the telescopic transmission shaft extends into an inner cavity in one end of the fixed transmission shaft, the shaft sleeve wraps the outer wall of the fixed transmission shaft, and the telescopic transmission shaft and the shaft sleeve can slide relative to the fixed transmission shaft. The machine head adopts single-stage speed reduction and is low in noise, high in transmission efficiency, simple in structure, convenient to assemble, high in production efficiency and low in cost, and the telescopic transmission shaft can stretch and retract relative to the fixed transmission shaft, so that the distance between the machine head assembly and the fixed transmission shaft is adjusted, and a user can treat teeth at different positions conveniently.

This invention offers a solution for optimizing wind energy production. The Biomimetic Nurse Shark Turbine (BNST) derives its design from the hydrodynamic shape of a nurse shark's tail, applied to a horizontal-axis turbine. It integrates into the air manifolds of an Aero-MINE system as a single stage or stacked in multiple stages. The turbine is powered by the accelerated airflow in the Aero-MINE's intake duct. The wind blowing over the Aero-MINES creates a low-pressure zone between the airfoils, designed according to NACA duct principles, allowing the air to be channeled through internal ducts. This air is then routed to a manifold, where it drives the TBRN turbine and a generator located inside the structure, thus generating electricity. This biomimetic system reduces dependence on fossil fuels by producing clean wind energy. It minimizes CO2 emissions, with a potential reduction of up to 4 million tons of CO2 equivalent per year through integration with existing stand-alone photovoltaic systems on commercial buildings. Aero-MINEs are designed for modular use, integrated into buildings or as standalone units.

The utility model relates to the technical field of automobile damping equipment, in particular to a two-in-one bipolar damping support capable of effectively reducing vibration of an air compressor. The support comprises an adapter piece, a limiting pin, a damping bolt, an elastic damping piece and a buffer gasket, wherein a threaded hole for screwing the damping bolt is formed in the adapter piece; the limiting pin is provided with a U-shaped mounting position which extends up and down and is used for mounting the damping bolt, and a mounting hole is formed in the bottom of the U-shaped mounting position for the damping bolt to penetrate through; the periphery of the limiting pin is provided with an installation groove used for installing the elastic damping piece. The damping bolt is sleeved with a damping spring, a spring bush is arranged in the U-shaped installation position, and the damping spring is located between the head of the damping bolt and the bottom face of the spring bush. The buffer gasket is arranged at the bottom of the limiting pin and provided with a penetrating hole for the damping bolt to penetrate through. The technical problems that in the prior art, a single-stage damping support is single in damping frequency band, and a two-stage damping support is complex in structure, difficult to produce and limited in arrangement are effectively solved.

A single stage servo valve assembly includes a drive assembly and a valve body assembly. The valve body assembly defines a valve body extending along a valve body axis (X) between a first valve body end and a second valve body end, a supply port, a control port and a return port formed through the valve body each defining a respective fluid flow channel, having a fluid flow axis, providing fluid communication between an interior of the valve body and an exterior of the valve body. The drive assembly operates to control the flow of fluid between the supply port, the control port and the return port, via the interior of the valve body, in response to an electric command signal; wherein a first nozzle is located in the valve body between the supply port and the control port and a second nozzle is located between the ports.

The present invention relates to a method for manufacturing a reinforced conveyor belt (100) and a product obtained by the method comprising a plurality of plastic modules (10, 10'), wherein each module (10, 10') includes at least one opening (12, 12') for receiving rollers (11, 11'), and the rollers are configured to rotate relative to a shaft (13, 13') consisting of a metal tube capable of being filled with plastic material; and the method includes the following stages: (i) inserting the shaft (13, 13') into an injection mold (200, 200') for the plastic modules (10, 10') in a region corresponding to the opening (12, 12'); and (ii) injecting the plastic modules (10, 10') in a single stage such that the injected plastic fills the interior of the shaft (13, 13'), thereby forming a single component or structure with the body of the modules (10, 10').

The invention discloses a single-phase single-stage nonlinear boost inverter circuit topological structure and a control method thereof. The working modes of the inverter circuit comprise a positive half-cycle sine wave output mode and a negative half-cycle sine wave output mode, and the two modes are switched through turn-on of a pair of complementary power frequency switches. The topology provided by the invention has nonlinear output voltage gain, and the functions of boosting and inverting in a single stage can be realized through reasonable design and distribution of the duty ratio of the switch. Compared with a traditional two-stage voltage source inverter, the topological structure provided by the invention reduces the use of passive elements, and has the advantages of low cost, small size, high efficiency, convenience in control and the like. The single-stage topological structure can simplify the structure of a traditional two-stage inverter, reduces the use of components such as a filter and a controller, and avoids the extra loss of energy in the multi-stage transmission and processing.

The utility model provides a single -stage flywheel. Single -stage flywheel includes inner core and sets up the outer cover of inner core, is provided with one -way clutch mechanism between inner core and outer cover to make outer cover can occur relative rotation with inner core in single rotation direction. One -way clutch mechanism includes a plurality of jack and with a plurality of elastic pieces corresponding setting up a plurality of jack. The circumferential wall of inner core is equipped with several accommodating grooves, and the jack and elastic piece are installed in the accommodating groove along the axial direction of the inner core, and the circumferential wall of the inner core is provided with a step part, and the accommodating groove is at least partially opened in the step part. Single -stage flywheel includes the bearing setting between inner core and outer cover, and the bearing has the inner ring fixed connection with inner core, the outer ring fixed connection with outer cover and the several ball bearings between the inner ring and the outer ring, wherein the inner ring is crimped on the step part to limit the jack and the elastic piece along the axial direction of the inner core from the accommodating groove. The single -stage flywheel provided by the utility model can improve the convenience and use reliability of flywheel maintenance.

This utility model relates to a single-stage pipeline pump with a dynamic seal and an integrated packing seal. The single-stage pipeline pump includes: a foundation plate, a pump body, an impeller, a pump cover, a secondary impeller dynamic seal, a motor, a water-retaining ring, an integrated self-adjusting packing seal system, and an impeller fixing component. The entire single-stage pipeline pump is fixed on the foundation plate. The water-retaining ring is located on the pump shaft and above the integrated self-adjusting packing seal system. Both the secondary impeller dynamic seal and the integrated self-adjusting packing seal system are installed on the pump shaft, with the secondary impeller dynamic seal located between the integrated self-adjusting packing seal system and the impeller. This utility model uses a combination of a secondary impeller dynamic seal and an integrated self-adjusting packing seal system, solving the problems of existing mechanical seals, especially addressing the issues of high cost, complex external systems, high investment costs, and high maintenance costs associated with mechanical seals in conditions involving solid particulate impurities and corrosive environments.

1. The name of the design product: single platform laser cutting machine. 2. The use of the design product: the design product is used for cutting of metal, non-metal and other materials. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

This invention discloses a circulating pulping system and method, comprising a circulating tank, a dispersing device, a powder tank, and a liquid tank. The dispersing device is connected to the circulating tank via a circulating pipeline, the powder tank is connected to the circulating tank via a powder inlet pipeline, and the liquid tank is connected to the circulating tank via a liquid inlet pipeline. The circulating tank has several liquid inlets and several spray nozzles, which are connected to the liquid inlet pipeline via inlet branch pipes. The liquid inlets are connected to the inner cavity of the circulating tank, and the spray nozzles are equipped with spray devices. During pulping, the solution in the liquid tank is injected into the circulating tank in stages, and the solution is injected into the circulating tank in a single stage through the liquid inlet and / or the spray device. This invention uses a high-pressure spray device to flush and recover floating powder, improving the effective utilization rate of the powder, ensuring the mixing effect of the pulp, and improving the precision and quality of the pulp.

This invention relates to the field of oil well development technology, specifically disclosing a method for optimizing process parameters of a multifunctional integrated tubing string for long open-hole sections. The method includes: establishing an eccentric non-uniform annular flow channel model; establishing a rheological parameter correction relationship with temperature variation and calculating corrected rheological parameters; calculating the friction gradient along the flow path based on geometric eccentricity and annular flow cross-sectional area; determining the maximum safe discharge rate based on the corrected rheological parameters and friction gradient along the flow path; calculating the cuttings carrying ratio under different circulation discharge rates and determining the minimum cuttings carrying rate; determining the drilling circulation discharge rate based on the maximum safe discharge rate and the minimum cuttings carrying rate; determining the actual axial load of the tubing string based on the buckling critical load; and determining the cementing displacement discharge rate within the displacement discharge optimization search range based on the cement slurry volume ratio threshold. This method for optimizing process parameters of a multifunctional integrated tubing string for long open-hole sections solves the problem that current parameter designs merely satisfy parameters for a single stage.

The invention relates to the technical field of sewage denitrification treatment, in particular to a sewage denitrification device which comprises a reactor main body sequentially connected with a grating tank, an adjusting tank and a settling tank, a plurality of reaction bed layers connected in series through pipe assemblies are vertically arranged in the reactor main body, and the number of the reaction bed layers is at least three. The reaction bed layers are sequentially arranged into a first stage, a second stage and a third stage from top to bottom in the reactor main body; a water distributor, a filler layer and a clear water layer are sequentially arranged in each reaction bed layer from bottom to top, the filler layer is sulfur slag-attapulgite composite filler, and a water inlet area is arranged between the water distributor and the filler layer; and an air washing mechanism. The problem of single-stage up-flow type gas retention is solved, the whole body is closer to an ideal plug flow state after multi-stage series connection, the reaction driving force is large, the denitrification efficiency is higher, the water outlet is more stable, sectional regulation and maintenance are facilitated, and the pH, alkalinity addition and the like of each stage can be independently regulated and controlled.

The application discloses a kind of extrusion type first-stage liquid rocket, comprising: liquid nitrogen tank, liquid oxygen tank, fuel tank, thrust chamber, liquid nitrogen booster turbine pump, vaporizer around being arranged in the outer wall of thrust chamber, relevant valve and pipeline;The top of the thrust chamber is equipped with double-group element injector.Hollow shaft blade transports liquid nitrogen to actively cool turbine end, adopt turbine end internal cavity to realize efficient heat exchange, cooperate with the micro-hole of turbine end peripheral wall and open turbine blade cooling, effectively alleviate the scouring and damage of high-temperature gas to turbine end, realize liquid nitrogen booster turbine pump super multiple test run is not damaged.Liquid nitrogen booster turbine pump only carries out booster operation to a small amount of liquid nitrogen, without bearing the high-pressure pumping task of liquid propellant, can directly use civil-grade turbocharger pump to replace traditional high-cost aerospace-grade turbine pump as the liquid nitrogen booster turbine pump of the application, so that the manufacturing cost and research and development cost of rocket are significantly controlled, and the threshold of large-scale application is greatly reduced.

The invention discloses an extrusion type first-stage rocket capable of achieving high thrust output. The extrusion type first-stage rocket comprises a liquid nitrogen storage box, a liquid nitrogen turbine pump, an oxidizing agent storage box, a fuel storage box, a thrust chamber and a vaporizer. The turbine pump only pressurizes and conveys liquid nitrogen, and does not make contact with an oxidizing agent and fuel in the whole process, so that the potential safety hazards of propellant inner leakage, premixing spontaneous combustion and pump body explosion caused by pump body dynamic sealing failure are fundamentally eradicated; meanwhile, the problem of oxidation corrosion damage of the oxygen pump impeller is avoided, and the operation safety and reliability of the system are fundamentally improved; the vaporizer is used for vaporizing liquid nitrogen and cooling the pipe wall of the thrust chamber, compared with a cooling fuel flow channel in the prior art, the vaporizer structure achieves lightweight design, the overall weight and the manufacturing cost of the thrust chamber spray pipe are remarkably reduced, the liquid nitrogen directly makes contact with the pipe wall of the thrust chamber for heat exchange, and the heat exchange efficiency is improved. And the heat exchange efficiency is also synchronously improved.

The utility model discloses a modularization combined antiskid gangway structure for locomotive belongs to locomotive pedal technical field is used for installing on the two groups of gangway frame of left and right parallel arrangement on the car body still includes a plurality of single stage pedal, two groups gangway frame is equipped with a plurality of pairs of mounting seat, and each pair of mounting seat is parallelly arranged, a plurality of pairs mounting seat is interval setting gradually in ladder shape, the mounting seat includes support plate, be equipped with connecting hole on support plate, the both sides of single stage pedal all are equipped with connecting groove, and the fastener fixed connection is passed through connecting groove and connecting hole cooperation after cooperation. The utility model discloses a modularization combined antiskid gangway structure for locomotive can effectively solve the pedal of prior art not having universality, cannot adapt to the installation of different locomotive types, and after installing and fixing, cannot adjust the front -back interval between adjacent pedal etc.

Processes for converting one or more C1-C5 alcohols to one or more C2-C5 olefins at a time on stream that is greater than a time on stream of a comparable process are provided. In one exemplary aspect, the process can be a single stage process for the direct conversion of C1-C5 alcohols to olefinic mixtures (e.g., C2-C5) carried out in a reactor using one or more catalysts, where an amount of water within the input stream is reduced and / or pressure within the reactor is increased at different time periods when an amount of an olefin present in the output stream is equal to or less than a target amount. Systems for carrying out these processes are also provided.

The utility model relates to the technical field of railway vehicle safety devices, and discloses a multistage planing type railway vehicle anti-creeper which comprises a vehicle body plate, a second cutting cylinder is arranged on the outer wall of the vehicle body plate, a first mounting groove is formed in the inner wall of the second cutting cylinder, and a recoil assembly is arranged on the outer wall of the second cutting cylinder. When a vehicle is collided, the anti-creeping tooth body absorbs collision energy and transmits the collision energy to the cutting cylinder to push the first piston plate to slide, the first cutting knife and the second cutting knife generate planing type friction with the outer wall of the cutting cylinder in sequence, and the collision energy is consumed in stages. When the first section is used for buffering, the first cutter is matched with the planing plate to preliminarily buffer collision force, and when the second section is used for buffering, the second cutter slides to the inner wall of the first mounting groove along the outer wall of the cutting cylinder to further absorb energy and greatly reduce impact force borne by a compartment, and compared with a traditional single-stage buffering anti-creeper, the anti-creeper can more effectively protect safety of vehicles and passengers.

The utility model discloses a pipeline direct drinking water connector device with a water leakage prevention design, and relates to the technical field of water supply equipment. An existing pipeline direct drinking water connector device only depends on pipe fitting threads or a single gasket for sealing, and looseness and leakage are easily caused by vibration, water pressure fluctuation or thermal expansion and cold contraction. And only single-stage activated carbon or a precise filter element is adopted, so that comprehensive purification of large particles, peculiar smell, residual chlorine, organic matters and microorganisms is difficult to consider. According to the utility model, the external locking sleeve, the locking bolt, the second sealing ring and the first sealing ring are additionally arranged at the direct drinking water connector and are matched with internal threads to realize multiple radial compression sealing on the fine filter screen; the pre-filtering net, the activated carbon adsorption net and the fine filtering net are sequentially installed in the connector, three-stage filter element cascade filtering is constructed through cooperation of the clamping grooves, the supporting ribs and the threads, the connector is stable and free of leakage, and discharged water meets the direct drinking water standard.

The utility model provides a radial tire two-time method one-section forming machine which comprises a forming machine body and a feeding device, and the feeding device is located on the first side of the forming machine body in the length direction. The tire bead transferring device is located on the second side of the forming machine main body in the length direction, and the tire bead transferring device is movably arranged on the forming machine main body in the length direction of the forming machine main body; the tire bead feeding assembly and a feeding device are arranged on the second side of the forming machine main body, and the feeding device is used for placing tire materials; and the clamping device is arranged on the second side of the feeding device, and the clamping device is used for moving the tire materials on the feeding device to the tire bead transferring device. The problems that in the prior art, a forming machine is high in labor intensity and low in automation degree are solved.