102results about How to "Guaranteed running stability" patented technology

The invention belongs to the technical field of production testing in the manufacturing industry, and particularly discloses a production testing system and method based on the manufacturing industry, a terminal and a medium, and the system comprises a back-end service layer which is in communication connection with a front-end service layer for information interaction, dividing the business logic of the production test into a plurality of business modules which can be independently managed through a module registration mechanism; the equipment interaction layer comprises an equipment driving interface, at least one equipment driving plug-in and an equipment communication unit; and the system integration layer is used for carrying out information exchange with a manufacturing execution type service system through a standardized data interaction mode so as to obtain and send the production test data. Test data is aligned with a manufacturing execution type business system through a standardized data interaction mode, connection between a production test link and manufacturing process management is realized, and the overall cooperative capability of a production line is improved.

The utility model relates to electric drive bridge motor technology field, concretely relates to a kind of electric drive bridge oil-water composite cold motor, comprising: motor main body, including oil sump and base;The oil sump is equipped with oil outlet;The base is equipped with water inlet and water outlet;The water channel that is connected in the base inside water inlet and water outlet;It is equipped in the coarse filter, oil pump, filter and oil cooler of the radial side portion of motor main body and sequential butt joint;The coarse filter is butt joint with the oil outlet;The oil cooler is equipped with water inlet hole and water outlet hole;Water inlet pipe, butt joint with the water inlet;First water outlet pipe, butt joint with the water outlet in one end, butt joint with the water inlet hole in the other end;Second water outlet pipe, butt joint with the water outlet hole.The common implementation of the cooling setting and water cooling setting is guaranteed to the cooling effect of motor under various working conditions, and then the operating stability and service life of motor are guaranteed.

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.

The invention relates to the field of high polymer material forming and processing, and discloses an automobile polylactic acid composite material interior trim production device which comprises a lower mold assembly, a supporting assembly, a traction assembly and an upper mold. The lower die assembly is slidably connected to the supporting assembly, and the traction assembly is arranged below the lower die assembly. The traction assembly drives a lower section mold in the lower mold assembly to do horizontal reciprocating motion through a driving motor and a transmission mechanism; and the transmission mechanism synchronously drives the sliding plate and the convex teeth in the lower section mold to vertically lift in a reciprocating manner. Through phase matching of the cam and the cam shaft, the convex teeth stretch out and pierce the material only when the lower section die moves in the stretching direction and retract in the return stroke, and intermittent one-way shearing of the bottom end of the material is achieved. The device further has a variable-speed variable-pitch adjusting function, and the shearing stroke and speed can be switched according to the material forming stage. According to the invention, molecular chain orientation can be effectively induced, and the crystallization rate of the polylactic acid material and the mechanical strength of the interior trim part are improved.

The utility model belongs to the technical field of double-sided release film production, particularly relates to a double-sided release film production processing device, and aims to solve the problems that the efficiency is low and the precision is easily influenced by operators when the position of a cutting blade is manually adjusted to adjust the cutting width in the prior art; in order to solve the problems that in the prior art, due to the fact that a dust removal roller is short of a self-cleaning function and needs to be frequently shut down for cleaning, the production efficiency is influenced, the following scheme is provided: the automatic dust removal device comprises a rack, and an unwinding roller and a winding roller which are used for unwinding and winding are arranged at the top of the rack. On the basis of high-precision displacement adjustment, vibration offset is eliminated through the self-locking characteristic of a worm gear, and the stability of the slitting width of film materials of different specifications is ensured. The self-cleaning assembly integrating the scraping plate and the negative pressure dust collection removes impurities on the surface of the dust removal roller through dynamic contact type scraping, the dust is sucked away in real time in combination with a negative pressure pipeline, the efficient dust removal period is prolonged, and the shutdown maintenance requirement is reduced.

The utility model relates to a kind of connecting mechanism and equipment pedestal, belong to laser direct imaging equipment technical field.Connecting mechanism includes positioning and guiding component, is set in the splicing of two adjacent pedestals, for the directional splicing of two adjacent pedestals together;Positioning and guiding component includes the first guide plate and second guide plate respectively set in two adjacent pedestals;First guide plate and second guide plate can be slid along splicing direction relative to the pedestal where it is;One of first guide plate and second guide plate is provided with convex part, and the other is provided with recess part;Convex part and recess part are used to guide and position two pedestals in splicing process;Locking assembly is used to fix two adjacent pedestals.By the guiding and positioning effect of first guide plate and second guide plate and the fixing effect of locking assembly, the accuracy and stability of splicing can be ensured while ensuring the rapid splicing of pedestal.

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.

The utility model relates to the field of motor assembling, in particular to a large permanent magnet motor assembling tool which comprises a tool support, an adjusting mechanism is installed on the tool support and comprises a supporting plate, a roller and two rotating rods, and the two rotating rods are rotationally arranged on the two sides of the tool support. The two supporting plates are fixedly connected to the side wall of the rotating rod, and the rollers are rotationally arranged on the supporting plates; the side wall of the tool support is provided with a flatness detection mechanism, and the flatness detection mechanism is divided into a side wall detection member and a circumference detection member. The beneficial effects of the utility model are that the tool can be accurately adjusted according to bearings with different specifications and shapes by using the adjusting mechanism; it is ensured that the bearing can be smoothly positioned in the installation process, and the problems of vibration and noise caused by assembly deviation are solved. And meanwhile, the adjusting process is simplified by introducing the jack, and the assembling efficiency is improved.

The invention discloses a vehicle fault-tolerant control method under the abnormal condition of a multivariable measurement sensor, and belongs to the crossing field of electric digital data processing and intelligent driving vehicle control technologies. The method comprises the following steps: firstly, based on spatial-temporal correlation and physical consistency constraints of multi-source sensor data, carrying out redundancy modeling and credibility evaluation on a key state of a vehicle; then, when it is detected that the sensor is abnormal, real-time compensation and correction of failure observation are achieved through a state reconstruction model driven by redundant data; and further combining a rapid fault identification and virtual sensor switching mechanism to construct a fault-tolerant control strategy for the minimum function demand of the vehicle so as to ensure that the vehicle can still maintain basic driving and safety control capability under the condition that the functions of part of sensors are damaged. According to the invention, the real-time performance of the system is ensured, the safety and robustness of the intelligent driving vehicle in a complex environment and an abnormal condition are obviously improved, and the method is suitable for a multi-sensor fusion intelligent vehicle control system.

The invention relates to the technical field of elderly nursing equipment, and discloses an autonomous bathing nursing device suitable for the elderly with physical inconvenience, which comprises a fixed shell, a fixed seat is slidably connected in the fixed shell, a connecting block is slidably connected in the fixed seat, and a driving cavity and a square notch are formed in the connecting block. A trigger end of a driving assembly is rotationally connected into the driving cavity; the driving assembly comprises a worm, the worm is meshed with a worm gear, the worm gear is fixedly connected to the rotating shaft, cams are fixedly connected to the positions, close to the two ends, of the rotating shaft, and the cams abut against the trigger ends of the wiping assemblies. According to the invention, the horizontal torque of the motor is efficiently converted into rotation power through the worm-worm gear, the self-locking characteristic of the worm-worm gear can effectively prevent accidental inversion in the power transmission process, and the operation stability is ensured; and the cam and the V-shaped connecting rod are matched to enable the wiping assembly to do arc-shaped wiping action, so that stiff friction to the skin of the old people is reduced, and discomfort is reduced.

The utility model discloses a glass curtain wall installing and positioning device which comprises a suction cup positioning assembly and a glass curtain wall body arranged on the front face of the suction cup positioning assembly, the top of the suction cup positioning assembly is fixedly connected with a clamping mechanism, the clamping mechanism comprises a double-end air cylinder, the output end of the double-end air cylinder is fixedly connected with an extending plate, and the extending plate is fixedly connected with the suction cup positioning assembly. A lower plate is fixedly connected to the inner side of the bottom of the extension plate, the bottom of the lower plate is slidably connected with the suction cup positioning assembly, the outer side of the lower plate penetrates to the outer side of the suction cup positioning assembly and is fixedly connected with a side clamping plate, and the inner side of the side clamping plate is located on the surface of the glass curtain wall body. According to the installation positioning device, the phenomenon that the safety is poor due to the fact that limiting only depends on suction cups in the prior art is changed, the glass curtain wall body is clamped through the side clamping plates, the phenomenon that the suction cups fall off when encountering large external wind power and the like is avoided, installation safety of the glass curtain wall is effectively guaranteed, and installation quality is improved.

The invention discloses a high-stability static pressure guide rail device for heavy equipment, and relates to the technical field of precision mechanical guide rails, the bottom surface of a movable sliding table is fixedly connected with a pull-down constraint support, a plane static pressure oil cavity group is located on the bottom surface of the pull-down constraint support, and the bottom end of a plane oil supply channel extends into the plane static pressure oil cavity group; and the V-shaped sliding rails are fixedly connected to the two sides of the bottom face of the movable sliding table, the V-shaped static pressure oil cavity sets are located on the side faces of the bottoms of the V-shaped sliding rails, and the bottom ends of the V-shaped oil supply channels extend into the V-shaped static pressure oil cavity sets. The comprehensive bearing capacity of the guide rail is remarkably improved, the large-load requirement of heavy equipment is met, the central plane supporting area provides main vertical bearing capacity, the double-V-shaped guide rail provides multidirectional constraint and auxiliary bearing, and the lateral constraint structure provides static pressure support in the horizontal direction.

The invention provides a tool servo-driven multi-station metal sheet grooving device, and particularly relates to the technical field of metal sheet grooving machining, the device is based on a base, a first DD motor with a driving mechanism is arranged in the center of the base, and a positioning unit capable of achieving X-axis and Y-axis accurate adjustment is assembled at the top of the base; five sets of feeding conveying units driven by servo motors are evenly arranged on the base along the circumference of the first DD motor, each set of feeding conveying units is matched with a set of grooving machining units, the grooving machining units are in sliding fit with a feeding conveying module through feeding adjusting units, and a cutter set is driven through the servo motors and a synchronous transmission structure to achieve metal sheet grooving operation. The equipment is further provided with a workpiece fixing base matched with the positioning unit and a pentagonal protection structure covering the machining area. According to the equipment, through multi-station circumferential layout and full-servo drive control, automation of the metal sheets is achieved, the efficiency and precision of grooving machining of the metal sheets are greatly improved, and the safety of machining operation is higher.

This utility model discloses a treatment head assembly with temperature control and heat dissipation functions, specifically relating to the field of electronic equipment manufacturing technology. It includes an operating head assembly for physiotherapy; the operating head assembly has an external functional component for temperature control adjustment; the functional component includes a heating element located at the top of the operating head assembly; the heating element includes four graphene heating plates arranged sequentially from top to bottom, with adjacent graphene heating plates welded together by silicone wire; two spaced-apart NTC sensors are located at the bottom of the heating element. This utility model integrates the NTC sensors and the heating element into a single structure, enabling precise temperature control of the graphene heating plates through the high-precision temperature measurement capability of the NTC sensors. This reduces heating errors and effectively shortens the response time for temperature regulation, improving medical efficiency and effectiveness.

This utility model relates to the field of electric cylinder technology and discloses a compact pen-type electric cylinder, including an electric cylinder housing, a push rod, and a guide post assembly. The electric cylinder housing is slidably sleeved on the push rod. A rear cover is fixedly installed at the rear end of the electric cylinder housing. The guide post assembly is fixedly connected to the rear cover. A micro motor is fixedly installed at the front end of the rear cover. The micro motor and the guide post assembly are both located inside the electric cylinder housing. A transmission screw groove is opened in the middle of the end face of the push rod. A screw shaft is provided at the output end of the micro motor. The transmission screw groove is threaded onto the outside of the screw shaft. A guide groove is opened on the end face of the push rod corresponding to the guide post assembly. The guide groove is slidably sleeved on the outside of the guide post assembly. A slider assembly is provided on the outer side of the push rod. This utility model makes the electric cylinder structure simpler and helps to reduce the overall volume, thus conveniently meeting the needs of use in confined spaces.

This utility model relates to the field of metal processing technology, specifically to a slag cleaning device for laser cutting machines, designed to solve the problems of low efficiency, poor safety, and insufficient adaptability of manual slag cleaning. The device includes two mounting plates connected by a sliding structure. A grooved scraper is installed below each mounting plate, the groove engaging with a serrated support strip. The drive assembly includes a drive wheel with a positioning column, fixed to both ends of a telescopic rod I. The telescopic rod I is connected to a synchronous wheel I via a driven wheel. The synchronous wheel I drives a smaller diameter synchronous wheel II via a synchronous belt, causing the turntables at both ends of the telescopic rod II to rotate. Driven by the eccentric fixed column I and the L-shaped connecting plate, the scraper periodically oscillates to remove the slag. The mounting plate spacing is adjusted via a screw-adjustable guide rod and an internally threaded tube, adapting to different serrated strip spacings. This device achieves simultaneous movement and slag scraping, improving cleaning efficiency and versatility.

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.

A method for installing a hydraulic pump station using a combination of tools: S1. The hydraulic pump station is lifted using claw jacks. Three pallet jacks are placed at the bottom of the hydraulic pump station, one of which is a main pallet jack with electric power and remote steering function, and the other two are follow-up auxiliary pallet jacks. The hydraulic pump station is lowered to support it on the three pallet jacks. S2. The hydraulic pump station is moved horizontally by the electric power of the main pallet jack. The direction of the rollers of the main pallet jack is controlled by a remote control to achieve steering. The two auxiliary pallet jacks follow the movement, moving the hydraulic pump station to the vicinity of the installation foundation. S3. The hydraulic pump station is lifted again using claw jacks, all pallet jacks are removed, and the hydraulic pump station is lowered onto the installation base. S4. The level of the hydraulic pump station is adjusted, the anchor bolts are tightened, and the connection between the hydraulic pump station and the external hydraulic pipeline is completed. This method solves the technical problems of existing installation methods, which make it difficult to lift, steer, and accurately position equipment in narrow spaces.

The application discloses an outbound call method, device, equipment, storage medium and product. The method comprises the following steps: acquiring period characteristic data and user characteristic data of a target user; wherein the period characteristic data comprises outbound call efficiency information corresponding to at least two preset periods; inputting the period characteristic data and the user characteristic data into a pre-trained outbound call willingness prediction model to obtain output period willingness data of the target user; and performing outbound call processing on the target user according to the period willingness data; wherein the period willingness data comprises outbound call willingness degrees of the target user corresponding to the at least two preset periods, thereby solving the problem that invalid outbound calls occupy line resources of a communication system and ensuring the operation stability of the communication system.

The utility model belongs to the resource recovery technical field relates to a methylcyclohexane separation and recovery device, including heavy separation tower, heavy separation tower top reflux pump, de -heavy tower, de -heavy tower reflux pump, product tank and naphtha pipeline, the tower top of heavy separation tower communicates with one end of heavy separation tower top reflux pump, the other end of heavy separation tower top reflux pump communicates with the tower side of heavy separation tower and the tower side of de -heavy tower respectively, the tower top of de -heavy tower communicates with the tower side of de -heavy tower and product tank respectively after de -heavy tower reflux pump. The utility model further realizes the efficient separation and recovery of methylcyclohexane by de -heavy tower, thereby reducing the content of methylcyclohexane in heavy separation tower kettle liquid, improving methylcyclohexane yield and raw material utilization, and avoiding direct economic loss, increasing the income.

The utility model discloses industrial silicon powder impurity removal equipment, which belongs to the technical field of industrial silicon powder, and comprises an impurity removal box, the top of the impurity removal box is fixedly connected with a top cover, the top side in the top cover is provided with a feed port, a screen is arranged right below the feed port, and the top of the screen is provided with a uniform distribution assembly and an auxiliary blanking assembly. According to the uniform distribution device, the driving motor drives the rotating shaft, the first gear, the annular gear, the uniform distribution frame and the first fluted disc to rotate, the centrifugal force of the uniform distribution frame in the rotating process can move industrial silicon powder accumulated in the center of the uniform distribution frame to the periphery, and the industrial silicon powder uniformly falls on the top of the screen below under the action of the uniform distribution holes of the uniform distribution frame; and meanwhile, a first fluted disc can drive a second gear to rotate, so that the second fluted disc drives a connecting shaft and a uniform distribution plate to reversely rotate by taking a uniform distribution frame as a center, and the uniform distribution plate can further disperse industrial silicon powder in the uniform distribution frame.

The application discloses a cross-process image drawing method and device, equipment and medium, and the method comprises the following steps: in response to an image drawing event acting on a first image drawing process executed by a central processing unit, obtaining a target handle corresponding to a to-be-drawn image of the image drawing event; based on the target handle, generating a shared buffer of to-be-drawn image data, and establishing an address mapping between a memory address of the to-be-drawn image in the first image drawing process and a disk address in the shared buffer; based on the memory address, reading image data of the to-be-drawn image in the first image drawing process, and storing the image data to the disk address in the shared buffer; after the to-be-drawn image is completely stored to the shared buffer, the to-be-drawn image is pushed to a second image drawing process executed by an image processor, and the second image drawing process is driven to draw the to-be-drawn image. The application can reduce the image drawing pressure of the central processing unit and save the running memory, so as to improve the stability of the system.

The invention discloses a parameter-adaptive excitation PID (Proportion Integration Differentiation) control method, system and equipment and a readable storage medium, and the method comprises two control links: one control link is a main control link, namely, when the terminal voltage of a synchronous motor is changed, a variable parameter compensation link is set before conventional series / parallel PID control, and a variable parameter compensation link is set before conventional series / parallel PID control; according to the compensation link, the series / parallel PID parameters can be dynamically compensated according to the working points of the synchronous motor, parameter self-adaption and optimal control are achieved, and the reactive response speeds of the synchronous motor at all the working points can tend to be consistent under the condition that the zero pole of the system is not changed; and the second step is a parameter limiting link, that is, when the deviation is smaller than a deviation given value, PID parameters are attenuated in time, so that the terminal voltage of the synchronous motor is fast and stable, and the running stability of the synchronous motor can be ensured while the dynamic reactive response speed is effectively improved.

The utility model provides a flue gas adsorption reactor, and particularly relates to the technical field of flue gas adsorption reactors. Which comprises an air inlet section, a venturi reactor and a turbulent flow reactor which are sequentially communicated, and is characterized in that the venturi reactor is formed by sequentially connecting a shrinkage pipe, a throat pipe and a diffusion pipe, the diameter of the throat pipe is smaller than 1 / 3 of the diameter of an inlet of the shrinkage pipe, and the length of the diffusion pipe is larger than 1.5 times of the length of the shrinkage pipe; the near-gas section is arranged below the shrinkage pipe, a feeding chute with an inclination angle of 10-20 degrees is formed in the side wall of the near-gas section, and an outlet of the feeding chute extends to an inlet of a throat pipe of the Venturi reactor. According to the utility model, through the design that the diameter of the throat pipe in the Venturi reactor is smaller than 1 / 3 of the inlet of the shrinkage pipe and the length of the diffusion pipe is increased by 1.5 times of that of the shrinkage pipe, the collision contact probability of flue gas and an adsorbent is obviously improved through a high-speed jet effect, the adsorption utilization efficiency is greatly improved, the gas-solid reaction time is prolonged, and the adsorption reaction is more sufficient.

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.

The utility model relates to the technical field of power tool turrets, in particular to a spray cooling mechanism and a power tool turret, which comprises a support mechanism, a spray cooling mechanism and a power tool turret, the threaded column is mounted on the supporting mechanism, and a flow guide groove is formed in the outer wall of the threaded column in the length direction; the moving part is slidably mounted on the threaded column in the length direction, a positioning part is arranged in a through hole of the moving part, and the positioning part is slidably connected with the flow guide groove of the threaded column in a matched mode; the adapter pipe is mounted on the moving part through a mounting seat, and an extension pipe is arranged on the adapter pipe and connected with a water pump water supply pipe; the spraying head is mounted at the water outlet of the adapter pipe; the driving mechanism is mounted on the moving part and used for enabling the moving part to move in the length direction of the threaded column; the cooling device is flexible to use and stable in cooling effect.

The invention provides a two-phase hybrid stepping motor sensorless load angle estimation and locked-rotor detection method, and relates to the technical field of motor control. Firstly, phase voltage and phase current of a motor are collected, a continuous and smooth counter electromotive force signal is obtained by constructing a super-spiral sliding-mode observer, and a self-adaptive strategy of resistance parameter online compensation and sliding-mode coefficient online adjustment is introduced to improve robustness of the sliding-mode observer. And then, extracting a back electromotive force phase angle by using an orthogonal phase-locked loop based on an extended state observer, and calculating a load angle by combining the phase of the stator reference current. And finally, the load angle is compared with a multi-stage early warning threshold value, and real-time monitoring of the motor load and rapid detection of out-of-step and locked-rotor faults are realized. According to the method, the hardware dependence of traditional load angle calculation and locked-rotor detection on a position sensor is eliminated, meanwhile, the problems of high-frequency differential noise, filtering phase lag and the like in a sensorless algorithm are effectively solved, and high-precision load angle estimation and locked-rotor detection are achieved.

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.