27results about How to "Guaranteed running stability" patented technology

The invention discloses an agricultural non-point source pollution treatment system, and relates to the technical field of agricultural environmental protection and water treatment, and the agricultural non-point source pollution treatment system comprises an ecological ditch unit, an ecological pond unit, a connecting pipeline and a control unit; the ecological ditch unit is used for carrying out primary pretreatment on sewage through a plant enhanced corridor and an ecological filter dam to remove suspended solids and part of pollutants; the ecological reservoir pond unit realizes deep purification through a multi-stage process of flocculent precipitation, enhanced denitrification, ecological treatment and a stable area; the control unit intelligently regulates and controls water flow based on water quality monitoring data, water reaching the standard is directly reused in farmland or lakes, and water not reaching the standard enters a pond to be further treated. According to the invention, stepped deep removal of pollutants, cyclic utilization of water resources and self-adaptive operation of the system are realized, and the treatment efficiency and stability are improved.

This utility model belongs to the technical field of injection devices, and provides a screw connection mechanism for injection equipment and an injection device. The connection mechanism includes: a hollow shaft, which is fixedly connected to the output end of a motor, and the inner peripheral wall of the hollow shaft is provided with a first limiting structure; a connecting sleeve, which is axially movable and disposed within the hollow shaft and connected to the screw, and the outer peripheral wall of the connecting sleeve is provided with a second limiting structure. Compared with the prior art, this utility model, by providing an inner peripheral wall with a first limiting structure within the hollow shaft and a matching second limiting structure on the outer peripheral wall of the connecting sleeve, allows the two to cooperate through multi-faceted contact. This enables the connecting sleeve and the screw to rotate synchronously when the hollow shaft rotates, while allowing the connecting sleeve to move freely along the axial direction. This structure simplifies the complexity of traditional connection structures, avoids problems such as poor fit and clearance accumulation caused by multi-stage connections or rolling elements, and improves transmission efficiency and equipment service life.

This utility model discloses a combined antenna with lead wires, comprising: a housing and a base plate; a communication array and a positioning array are disposed within the housing, and the communication array and positioning array are respectively connected to the inner side of the base plate; a communication port connector passes through the base plate, and the communication array communicates with the communication port connector; a lead wire also passes through the outer side of the base plate, and an array port connector is disposed at the bottom of the lead wire, and the positioning array communicates with the array port connector through the lead wire. The combined antenna's communication array communicates with the communication port connector, and the positioning array communicates with the array port connector through the lead wire, thus realizing data communication and positioning functions and ensuring the operational stability of the combined antenna; furthermore, replacing the original fixed positioning array with a lead wire method facilitates the installation of the combined antenna and is applicable to rail transit systems with narrow top openings, ensuring the ease of installation and performance of the combined antenna.

A purification mechanism for a vacuum system in an extruder includes a housing, a water supply tank, a water storage tank, and a connecting pipe. The housing contains a water seal layer. The top of the housing has an inlet pipe for connecting to the extruder's exhaust gas source and an exhaust pipe for connecting to the vacuum system. The downstream end of the inlet pipe extends downwards into the water seal layer. An overflow port, adapted to the height of the water seal layer, is located on the side wall of the housing. A filter frame is installed on the top of the water storage tank, below the overflow port. The water supply tank is located above the housing and connected to it via a float valve, the float of which floats on the water seal layer. The upstream end of the connecting pipe is connected to the bottom of the water storage tank, and the downstream end supplies water to the water supply tank. A water pump is installed on the connecting pipe. This invention has a simple structure, low operating cost, and can meet the need for removing impurities from extruder exhaust gas for extended periods.

This invention discloses an integrated sorting device for infectious medical plastics and metal sharps, belonging to the field of medical waste treatment technology. It includes a main shell, which is a hollow cylindrical structure. Inside the main shell, three sets of sieving mechanisms for sorting medical syringes are arranged from top to bottom. Three mounting arms are fixedly connected to the inner wall of the main shell at the position corresponding to each set of sieving mechanisms, and these three mounting arms are equidistantly distributed radially along the main shell. This invention achieves automated grading and sieving of different types of medical syringes and efficient integrated separation of needle tips and syringe barrels, significantly improving the efficiency and safety of medical waste disposal. Simultaneously, through the nested structure of the hollow main shaft and the built-in secondary shaft, combined with a bevel gear transmission pair driven by a closed-loop stepper motor, the working angle of all scraping blades can be adjusted synchronously at one time, enabling precise and efficient shearing and separation of the needle root.

This invention provides a conductive wood-based filter, its preparation method, and its application, belonging to the field of water treatment technology. The invention provides a conductive wood-based filter comprising a wood matrix and nano-carbon material grafted with nano-zero-valent iron (ZVI) onto the surface and pores of the wood matrix. The conductive wood-based filter provided by this invention enables uniform dispersion of ZVI nanoparticles on the filter surface, solving the problems of easy agglomeration and difficult recovery of ZVI nanoparticles, and the ZVI nanoparticles possess a large effective specific surface area. The use of nano-carbon material combined with ZVI nanoparticles solves the problem of high electron transfer resistance during the ZVI nanoparticle reaction. When the conductive wood-based filter of this invention is used to filter water containing Cr(VI), the reaction is carried out in cathode mode by applying an electric field, which effectively alleviates the oxidation and passivation of ZVI nanoparticles, ensuring operational stability and improving reaction efficiency.

This invention provides a high-efficiency mixing device for collagen dressings. The device includes a mixing tank equipped with a material-turning and stirring mechanism and a cleaning mechanism. The material-turning and stirring mechanism comprises an inner cylinder, a stirring shaft, a reducer, a drive motor, spiral blades, a mounting ring, and four stirring components. The inner cylinder is disposed inside the mixing tank. The stirring shaft is rotatably mounted inside the mixing tank. The reducer is fixedly mounted on the top of the mixing tank, with the top end of the stirring shaft connected to the reducer. The drive motor is fixedly mounted on the top of the reducer, and its output shaft is connected to the reducer. This invention provides a high-efficiency mixing device for collagen dressings. The spiral blades rotate, pushing the material spirally upward within the inner cylinder. Combined with the inclined stirring blades, this achieves multi-directional shear mixing and thorough cleaning of the entire tank without dead angles.

The utility model discloses a kind of quick cooling device for heat treatment furnace, specifically related to cooling device field, including rack, fixedly connected on the protection shell of rack, cover plate movably connected on the protection shell, fixedly connected in the heat preservation inner shell of protection shell, heater and fixedly connected in the air supply shell of heat preservation inner shell bottom, exhaust pipe is opened in cover plate, the bottom of heat preservation inner shell is opened with several circumferential arrangement's air jet, air supply pipeline is opened in air supply shell, air supply assembly is installed in air supply shell, flow guide assembly is installed on rack. The utility model is combined with the structure of bottom air supply and flow guide vane, simultaneously using flow guide assembly to drive flow guide vane to reciprocating swing synchronously, concentrated airflow is scattered and redistributed, eliminates the temperature gradient and cooling dead zone of each area in furnace, to significantly improve the quality problem such as deformation, cracking caused by uneven cooling, substantially improve product pass rate.

The utility model discloses a dustproof and moistureproof industrial factory building distribution control box, including control box, the top left side of control box is installed with joint no.

This utility model relates to a tooling for hot riveting zipper chains. It solves the technical problems of low pulling efficiency and high labor costs of existing hot riveting chains. It includes a chain placement platform located on one side of the press operating platform for placing the chain. A fixed frame is provided at the end of the chain placement platform away from the press operating platform. The fixed frame has a chain pulling mechanism that allows the chain to move towards the fixed frame and along the axial direction of the chain placement platform. A chain limiting mechanism is provided at the end of the chain placement platform closer to the press operating platform that positions the chain along the axial direction of the chain placement platform. The advantages are: the chain pulling mechanism can drive the chain to move on the chain placement platform, the chain pulling cost is low, and the chain pulling speed can be easily controlled. The chain limiting mechanism can limit the displacement length of the chain, effectively preventing the chain from being pulled too far.

This utility model relates to a cross-shaped thrust bearing structure for deep well pumps, belonging to the technical field of deep well pump thrust bearings. It includes a support base and at least two support pins symmetrically fixed to the top of the support base, with ball-head structures at the top of the support pins. The bottom surface of the thrust bearing seat has ball-head blind holes corresponding to the positions of the support pins, and the spherical surface of the inner wall of the hole mates with the ball-head structure, allowing the thrust bearing seat to swing around the X-axis with the support pins as fulcrum. The thrust bearing is embedded in a square groove at the top of the thrust bearing seat via a square boss at the bottom. The spherical surface at the top of the boss protrudes, allowing the thrust bearing to swing relative to the thrust bearing seat around the Y-axis and forming a friction pair with the planar bearing. This structure, through a cross-shaped dual-degree-of-freedom swing mechanism, solves the problem of uneven contact between the thrust bearing and the planar bearing caused by the limited swing of traditional arc-shaped support thrust bearing seats, ensuring stable formation of the lubricating water film, effectively preventing thrust bearing erosion during high-speed operation, and significantly improving the life and operational reliability of deep well pump bearings.

The application discloses a control method and device of a winding machine and a readable storage medium, and relates to the technical field of equipment control. The control method of the winding machine comprises the following steps: before the winding machine performs coil winding on an iron core, determining a first winding turn number corresponding to the iron core; according to the first winding turn number, determining a second winding turn number corresponding to the iron core, wherein the second winding turn number is smaller than the first winding turn number; in the process of controlling the winding motor to drive the iron core to rotate at a first rotating speed to perform coil winding on the iron core, detecting the number of coils wound on the iron core by controlling a counter and a photoelectric switch; under the condition that the number of coils wound on the iron core is greater than or equal to the second winding turn number, controlling the winding motor to drive the iron core to rotate at a second rotating speed, wherein the second rotating speed is smaller than the first rotating speed; and under the condition that the number of coils wound on the iron core is greater than or equal to the first winding turn number, controlling the winding motor to stop working. The application improves the production efficiency of the winding machine.

This invention belongs to the field of heating control technology, and particularly relates to a heating control method for a solar-thermal coupled air source heat pump. The method includes: acquiring real-time temperature data and solar radiation intensity data from environmental sensors; analyzing these data to determine the current low-temperature environment level and the fluctuation trend of solar energy collection, thus obtaining environmental change parameters; based on equipment power adjustment requirements, acquiring the current output data of the solar energy collection module and the real-time heat distribution status of the main heating equipment, determining whether the two are in an unbalanced state, and obtaining a dynamic coordination index; based on the dynamic coordination index, using a support vector machine algorithm to process historical energy consumption records and operating load data, determining an optimized heat distribution scheme, and obtaining a path to improve energy efficiency; based on the heating efficiency correction value, using a random forest algorithm to analyze the risk of insufficient heat in a low-temperature environment, determining the final energy consumption reduction configuration, and obtaining the overall system operating status.

This application discloses an automatic grinding device for angle steel saw blades, relating to the technical field of metal processing equipment. It includes a base, a positioning shaft, a fixing structure, an angle steel saw blade feeding mechanism, a damping braking mechanism, and a grinding mechanism. The feeding mechanism drives the saw blade to rotate and controls each rotation by one tooth pitch angle, achieving precise feeding of the saw blade. The damping braking mechanism eliminates the rotational inertia of the saw blade, allowing it to stop accurately. The grinding mechanism precisely grinds each tooth of the saw blade, ensuring grinding quality and achieving automated grinding of angle steel saw blades, thus improving grinding efficiency and quality.

The application provides a kind of heat supply network scheduling processing method and system considering unit waste heat utilization system, belongs to heat supply network scheduling technical field, specifically includes: according to the predicted data of heat demand load in future preset period and the matching heat supply interval data under different prediction deviation types as a basis, determine the real-time intervention processing of steam heat network heater is not needed, in the predicted data of heat demand load after future preset period and the matching condition of matching heat supply interval and prediction deviation type as a basis, determine the intervention control strategy of steam heat network heater in future preset period, improve the operation stability of steam heat network heater.

The application provides a kind of two-phase hybrid stepping motor position sensorless load angle estimation and stall detection method, it is related to motor control technical field.First, the phase voltage and phase current of motor are collected, the continuous smooth back electromotive force signal is obtained by constructing supercoil sliding mode observer, and the adaptive strategy of introducing resistance parameter online compensation and sliding mode coefficient online adjustment is introduced to improve the robustness of sliding mode observer.Then, the back electromotive force phase angle is extracted by using the quadrature phase-locked loop based on extended state observer, and the load angle is calculated by combining the phase of stator reference current.Finally, the load angle is compared with the multi-stage early warning threshold, the real-time monitoring of motor load and the rapid detection of out-of-step stall fault are realized.The application eliminates the hardware dependence of traditional load angle calculation and stall detection on position sensor, effectively overcomes the problems of high-frequency differential noise, filter phase lag and other problems in sensorless algorithm, and realizes high-precision load angle estimation and stall detection.

This utility model relates to a contamination prevention kit for a pulp refiner, including an annular receiving plate for connecting to the rear end of the grinding chamber and an annular sealing seat for connecting to the front end of the bushing. The inner circumferential surface of the annular receiving plate is in contact with the outer circumferential surface of the annular sealing seat and can generate relative linear movement. The key technical point is that a retractable corrosion-resistant rubber sleeve is connected between the front end of the outer circumferential surface of the annular sealing seat and the front end of the outer circumferential surface of the annular receiving plate. Compared with the prior art, this utility model prevents the ground pulp from entering between the outer circumferential surface of the sealing seat and the inner circumferential surface of the receiving plate, avoiding contamination of their contact surfaces, thereby ensuring smooth operation of the pulp refiner and significantly improving the operational stability of the pulp refiner.

This invention discloses a desert edge photovoltaic ecological barrier system in the field of desertification control. From the desert side to the oasis side, it comprises: a dune-blocking belt, located on the ridge line of the dune chain, with adjustable tilt angle and height; a grid-like blocking belt, using a woven mesh structure to three-dimensionally intercept and stabilize large-scale shifting sand; a low-lying vertical sand-fixing belt, also using a woven mesh structure to stabilize near-surface windblown sand and fix loose sand particles; a first sand-blocking forest belt; a photovoltaic zone; a second sand-blocking forest belt; and a restoration zone. The beneficial effects of this invention are: by systematically integrating multiple levels of structures such as sand source blocking, grid-like sand fixation, windbreak forest belts, extensive array sand control, and enclosure and restoration, a continuous ecological protection chain is constructed from the desert side to the oasis side, effectively improving the system's sand-fixing capacity, ensuring the operational stability and power generation efficiency of the photovoltaic power station, and improving the ecological environment of the desert edge.

The utility model discloses a papermaking is with slitting device relates to paper slitting device technical field, including mounting bracket, base, the left and right sides fixed mounting of mounting bracket has the fixed frame, and the inside of fixed frame is close to the position of top and set up slitting knife structure, and the position fixed mounting of the bottom middle part of mounting bracket is close to the front end and has the hydraulic telescopic rod, and the output fixed connection of hydraulic telescopic rod has the equal division equidistance sliding table, and the bottom of equal division equidistance sliding table is close to the position of left and right sides and all fixed mounting has the first slide rod, and the top of base is close to the position of left and right sides and all fixed mounting has the triangular seat, and all is provided with rebound device on two triangular seats, and one of two rebound devices includes connecting plate, swing lever, damper, spring, second slide rod group, moving block, check ring, connecting seat and first movable seat.

This invention discloses a highly robust deadbeat-free predictive current control method, applicable to the current control of dual three-phase permanent magnet motor drive systems, belonging to the field of permanent magnet motor control technology. The main steps of this invention are: reconstructing the motor mathematical model using a space vector decoupling matrix and Park transformation, to obtain... dqxy The invention presents the following: motor voltage equations under the shaft; a linear extended state observer is designed; a reference value for the output voltage vector is obtained by combining deadbeat predictive current control; the time delay in the digital control system is calculated and the angle delay is compensated; a closed-loop Smith predictor is designed to compensate for the time delay, thus achieving highly robust deadbeat predictive current control for the dual three-phase permanent magnet motor. The current loop design in this invention is independent of motor parameters and exhibits strong robustness to parameter variations. By introducing a closed-loop Smith predictor, this invention can effectively compensate for large system delays and achieve high-precision current tracking at low switching frequencies.

The application provides an anti-freezing type oil drilling water injection wellhead device, which comprises an environment monitoring module, a data processing and risk assessment module, a path planning module, an injection control module, a pumping execution and feedback module and a control method. The device generates an environment change index by monitoring temperature and wind speed data in real time, assesses the freezing risk level of the equipment, and obtains a protective material distribution scheme. The device optimizes the flow path of the protective material through path planning, dynamically adjusts the injection amount parameter and feedback control, realizes real-time monitoring of the uniformity, and ensures the anti-freezing protection effect. If the coverage is insufficient, a supplementary path is further generated to form a final protection scheme, so that the anti-freezing protection of the water injection wellhead device in a high-cold environment is realized, and the equipment operation stability and protection response capability are ensured.

The utility model relates to pad printing cleaning consumable replacement technical field, concretely relates to a kind of adhesive tape consumable quick-change device and pad printing equipment, a kind of adhesive tape consumable quick-change device includes: quick-change base and preloaded cassette box body, preloaded cassette box body and quick-change base are connected in the first axis direction by at least one set of clamping component, and at least part of clamping component is located quick-change base, remaining part is located preloaded cassette box body, at least part and remaining part are mutually clamped and make preloaded cassette box body be fixed in the first axis direction relative to quick-change base, and preloaded cassette box body and quick-change base between still be equipped with the locking assembly that prevents preloaded cassette box body displacement in the second axis direction perpendicular to first axis.The utility model in the quick-change base and preloaded cassette box body are set, solve the problem of low efficiency and complex operation caused by manual operation in the prior art to remove shaft core and replace adhesive tape.

The utility model provides a stable operation variable pump which comprises a pump body, a pump cover, a rotating pin and a variable sliding block, the variable sliding block is arranged in a cavity of the pump body, a rotor cavity is formed in the middle of the variable sliding block and used for containing a rotor assembly, and an arc groove and a protruding block are arranged on the periphery of the variable sliding block. The rotating pin is fixedly installed on the pump body and corresponds to the arc groove of the variable sliding block so that the variable sliding block can swing around the rotating pin, a tension spring is arranged between the protruding block and the side wall of the cavity of the pump body, and connecting mechanisms are arranged on the protruding block and the side wall of the cavity of the pump body and used for fixing hooks at the two ends of the tension spring respectively. Due to the fact that the tension spring is fixed to a connecting mechanism of the protruding block and the side wall of the pump body through the hook, front-back, left-right and up-down translation of the spring can be limited, center rotation, overturning and horizontal rotation of the spring can be limited, the problem that the spring slides due to the too large deflection angle in the running process can be greatly solved, the reliability of the spring is improved, and the service life of the spring is prolonged. And the operation stability of the variable pump is ensured.

This utility model relates to the field of screw conveyor technology, and more particularly to an anti-clogging screw conveyor. It includes a screw conveyor with a primary feed inlet inserted through its outer surface. An anti-clogging connecting cylinder is installed at the upper end of the primary feed inlet. Inside the anti-clogging connecting cylinder are a buffer plate, a guide plate, and a dispersing plate. The upper surface of the buffer plate has a buffer arc-shaped protrusion, the upper surface of the guide plate has a guide groove, and the upper surface of the dispersing plate has dispersing columns. Through the cooperation of the buffer plate, guide plate, dispersing plate, and flow regulating plate, this utility model firstly buffers and disperses the speed and state of materials entering the anti-clogging connecting cylinder in a pile, ensuring that the material ultimately enters the screw conveyor evenly. This prevents piles of material from falling too quickly into the initial end of the screw conveyor, forming accumulations and agglomerations, which could lead to blockages during the screw conveyor's operation, thus ensuring the stability of the screw conveyor's operation.

The utility model discloses a low -noise high -efficient marine fan, including fan, fan is installed in fan support, and the fan top is installed with silencer, impeller, explosion -proof motor, the bottom of fan inner tube is installed with short cone cylinder, is equipped with the heat dissipation hole on short cone cylinder, and the impeller of fan is equipped with sawtooth segment. The blade length of impeller is L, and the sawtooth shape structure length is 0.5L, and the starting point of sawtooth type structure is located at 1 / 3L away from the blade import, and the terminal point of sawtooth type structure is located at 1 / 6L away from the blade export. The best implementation scheme is that the impeller installation angle is 35 DEG, and the guide vane installation angle is 38 DEG. The technical scheme of the utility model effectively reduces the noise through the silencer, and the heat dissipation hole strengthens the heat dissipation, and simultaneously combines explosion -proof motor, explosion -proof control box, explosion -proof impeller etc. to reduce the explosion possibility, and the fan whole result is simple light weight, and can effectively guarantee the fan operation stability.

A kind of suspension type maintenance platform, including top frame, motor is fixedly arranged on top frame, first transmission wheel is fixedly arranged on the output shaft of motor, transmission shaft is arranged on top frame, steel wire rope reel is fixedly arranged at the both ends of transmission shaft, lifting platform is arranged below top frame, the steel wire rope of steel wire rope reel is connected with lifting platform;One guide structure is respectively arranged at the four corners of the lower side of top frame, guardrail is arranged around lifting platform, locking mechanism is arranged on guardrail.The utility model drives lifting platform to go up and down by motor, steel wire rope reel and multiple steel wires, and guarantees operating stability by guide wheel and guide structure, ensure that lifting platform is along set path smooth operation, improve operating accuracy, guardrail improves the protection capability of maintenance platform, locking mechanism can improve the high-altitude stability of lifting platform, reduce shaking, ensure that maintenance personnel safely carry out maintenance operation.