178results about How to "Reduce running noise" patented technology

The invention discloses an air conditioning system and a control method thereof. The air conditioning system comprises an air conditioning outdoor unit; the air conditioning outdoor unit comprises a compressor, an outdoor heat exchanger and an outdoor fan; the outdoor fan is at least provided with a first working mode and a second working mode; and when the outdoor fan runs in the first working mode, a wind gear is higher than that when the outdoor fan runs in the second working mode. The control method comprises the following steps that S1, the air conditioning system is controlled to enter arefrigeration mode; S2, according to the outdoor environment temperature and / or preset hours, the outdoor fan is controlled to enter the first working mode or the second working mode. According to the control method of the air conditioning system, the air conditioning system can control the outdoor fan to enter the first working mode or the second working mode according to the outdoor environmenttemperature and / or the preset hours, and when the outdoor fan runs in the second working mode, the wind gear of the outdoor fan is lowered, so that the use reliability the air conditioning system cannot be affected, and the requirement of a user on comfortableness can be met.

The invention relates to an epoxy resin pouring type transformer with built-in microcirculation cooling channels and a heat dissipation method of the epoxy resin pouring type transformer, and belongs to the technical field of power transformers. The epoxy resin pouring type transformer comprises an iron core, a low-voltage winding, a high-voltage winding and a heat dissipation shell, the low-voltage winding and the high-voltage winding are completely impregnated and wrapped by an epoxy resin composite material through a vacuum pouring process, an integrated epoxy resin pouring body is formed after curing, and a three-dimensional communicated bionic microcirculation cooling channel network is arranged in the epoxy resin pouring body; the heat dissipation shell is in close contact with the outer surface of the epoxy resin pouring body through the high-heat-conductivity insulating medium. According to the invention, the heat dissipation efficiency can be remarkably improved, and a cooling medium (air) is directly guided to a microscopic area around the winding conductor through a three-dimensional communicated and tree-shaped fractal bionic microcirculation cooling channel network, so that the effective heat exchange area and the heat exchange strength are greatly increased, and internal heat can be accurately and efficiently taken away.

The utility model provides an adjustable-speed motor, a fixed-frequency compressor and refrigeration equipment. The adjustable-speed motor comprises a stator assembly. The stator assembly includes a stator winding and a stator core. The stator winding comprises a first winding and a second winding arranged in parallel with the first winding. The stator core body is provided with a first center hole used for installing the rotor assembly and a plurality of wire embedding grooves, the sizes of the wire embedding grooves are uniform, and the first winding and the second winding are arranged in the wire embedding grooves in a stacked mode. The adjustable-speed motor has a first speed and a second speed smaller than the first speed. In the first speed state, at least parts of coils in the first winding and the second winding are arranged in parallel. And in the second speed state, the coils in the first winding and the second winding are respectively connected in series. The adjustable-speed motor provided by the utility model can drive the fixed-frequency compressor to operate at different rotating speeds under the high-load working condition and the low-load working condition, so that the energy consumption and the operation noise of the refrigeration equipment under the low-load working condition are reduced, and the user satisfaction is improved.

The utility model relates to the technical field of breathing machine fans, in particular to a fan volute structure for a breathing machine. The volute structure comprises an outer shell, a driving mechanism and a control part, the outer shell comprises an upper shell body and a lower shell body which are in butt joint, an air inlet is formed in the upper shell body, the upper shell body and the lower shell body are in butt joint, an air outlet is formed in one end of the outer shell body, an air cavity for communicating the air inlet and the air outlet is formed in the outer shell body, and the upper shell body is arranged in a concentric circle; the lower shell is not arranged in a concentric circle; the driving mechanism comprises a motor shell, a driving assembly, a fan blade piece and a first lower end cover, one end of the motor shell penetrates through the lower shell, the driving assembly is located in the motor shell, the rotating shaft is exposed out of the motor shell and connected with the fan blade piece, the fan blade piece is located in the air cavity, and the first lower end cover abuts against the motor shell and is connected with the lower shell; the control piece is contained in the first lower end cover, electrically connected with the driving assembly and externally connected with a power source. Efficient airflow conduction can be achieved, and the noise of the fan can be reduced.

The utility model relates to a kind of simple structure temperature-control accurate cold water machine system, solve the problem of the complex structure of current cold water machine, large outlet water temperature fluctuation. Including with cold equipment, cold water machine system further include plate heat exchanger, filter, backwater temperature sensor, outlet water temperature sensor and mixing device, plate heat exchanger is equipped with plate heat exchanger hot side water inlet, plate heat exchanger hot side water outlet, plate heat exchanger cold side water inlet, plate heat exchanger cold side water outlet. The utility model exchanges heat with external cooling water source using plate heat exchanger;And by setting tee valve on backwater pipe, according to system actual load (such as backwater temperature or outlet water temperature) dynamic adjustment the proportion of cooling water quantity and bypass water quantity that flow through plate heat exchanger, realize accurate, continuous and smooth control to outlet water temperature. In addition simple structure, energy consumption is low, compressor operation noise is small, especially suitable for the occasion of high temperature control precision requirement, need energy saving and emission reduction.

The utility model relates to a matching structure of an inner knife and an outer knife of a biopsy needle. The matching structure comprises an inner knife tube and an outer needle tube sleeved outside the inner knife tube, an expansion pipe section capable of containing more collected tissues is arranged on the front side of the inner knife pipe, and the lower peripheral side pipe wall, corresponding to the pipe section, of the tissue suction inlet expands outwards to form an expansion groove structure; a fluid conveying channel is formed between the expansion groove structure and the outer wall of the expansion pipe section; the rear section of the inner knife tube is in clearance fit with the rear section of the outer needle tube to form an annular conveying cavity communicated with the fluid conveying channel. According to the utility model, the expansion tube section of the inner knife tube is matched with the expansion groove structure of the outer needle tube, so that the sample collection space of the inner knife tube is maximized, and the sampling effect is improved; while the outer wall surface of the expansion tube section is tightly attached to the inner wall surface of the outer needle tube, the gap is minimized, meanwhile, the expansion groove structure of the outer needle tube can be communicated with the annular conveying cavity, fluid communication is ensured, and cutter blockage caused by the fact that fluid cannot be communicated after tissue cutting is completed is avoided.

This utility model discloses a handheld beauty spray device, belonging to the field of beauty instruments. It includes a first housing and a second housing, which are detachably connected. A receiving cavity exists between the first and second housings, housing a jet assembly, a first mounting base, and a second mounting base. The jet assembly includes a first tube, a second tube, and a solenoid valve. The first mounting base has a first positioning groove and a liquid inlet pipe. One end of the liquid inlet pipe is connected to the first positioning groove, and the other end is connected to the first tube. The first positioning groove is used to install an essence bottle, and the bottle opening of the essence bottle is connected to the liquid inlet pipe. The second mounting base has a second positioning groove and an air inlet pipe. One end of the air inlet pipe is connected to the second positioning groove, and the other end is connected to the second tube. The second positioning groove is used to install a high-pressure gas cylinder, and the bottle opening of the high-pressure gas cylinder is connected to the air inlet pipe. This design reduces the noise of the beauty spray device and improves the user experience.

The utility model relates to the technical field of speed reducer drive structure, and disclose a gear drive structure for speed reducer, including sun gear, gear ring and buffer shock component, the sun gear middle part is equipped with the taper mounting hole, with the taper mounting head of drive link is connected through buffer shock component, and buffer shock component contains the first installation platform of taper mounting hole inner wall, the second installation platform of taper mounting head outer periphery, the disc spring between both and the rubber sleeve of disc spring outer periphery, the inner periphery of gear ring is engaged with planetary gear, and the planetary gear is engaged with sun gear, and the oil cavity is equipped in the planetary gear, and the oil supply groove of outer periphery annular array, the oil supply groove is equipped with oil storage groove in the tooth surface of second wheel tooth two sides, and the oil supply groove is connected with oil storage groove. The utility model can buffer impact, strengthen engagement lubrication, reduce the wear and tear of wheel tooth, promote transmission stability and efficiency, prolong the service life of speed reducer, and be applicable to the speed reducer of industrial, engineering machinery and other fields.

The utility model relates to the technical field of ceramic tile transmission, and discloses a translation type elevator for ceramic tile transmission, which comprises a rack, a guide plate, an annular transmission component and a plurality of moving components, an annular rail is arranged on the vertical face of the rack, and an annular conveying assembly is installed in the annular rail and used for driving the multiple moving assemblies to move circularly along the annular rail. The guide plate is mounted on the rack and is provided with a guide rail; the guide rail is positioned behind the annular rail; the moving assembly comprises a fixing frame, a bracket, a first supporting part and at least three second supporting parts. The problems that when a conventional lifting device which moves in a reciprocating mode is used, the reciprocating speed is increased to improve the conveying efficiency, meanwhile, shaking of the device is inevitably large, the ceramic tile quality is affected, and the conveying efficiency is limited by inertia force and is difficult to further improve are solved.

The application provides a transmission wheel assembly with a tolerance compensation function, which comprises a tolerance compensation wheel and a power wheel coaxially assembled, a plurality of groups of force transmission teeth are arranged on the outer periphery of the tolerance compensation wheel, the end surface of the power wheel is provided with force transmission grooves matched with the force transmission teeth, the end surface of the tolerance compensation wheel is provided with a plurality of groups of matching surfaces, the height of each group of matching surfaces is different, the end surface of the power wheel is provided with a boss matched with any one group of matching surfaces, each group of force transmission teeth corresponds to a group of different matching surfaces, and the boss is assembled with different matching surfaces according to the installation axial dimension tolerance of the driving machine or the driven machine transmission wheel, so that the axial installation precision of the power wheel is improved. The transmission wheel assembly can be selected according to the installation axial dimension tolerance of the driving machine or the driven machine power wheel, the axial installation precision of the power wheel is effectively improved, the transmission plane height difference of the driving wheel and the driven wheel is reduced, the wear and the running noise of the moving part are reduced, and the service life of the transmission element is prolonged.

The utility model provides a kind of vibration platform structure of spherical graphite vibration grinding machine, belong to graphite vibration grinding machine technical field, the vibration platform structure of this spherical graphite vibration grinding machine, it include: vibration platform body, vibration excitation device, elastic support component, grinding vessel, transmission connecting mechanism and damping control device, vibration platform body is rectangular plate, and upper surface central fixed spherical grinding vessel;Excitation motor is fixed in the center of bottom surface, output shaft is coaxial with eccentric wheel component, and main, vice eccentric wheel is divided on the upper and lower ends of rotating shaft;Each elastic support unit is arranged in four corners, including support seat and helical compression spring, support seat bolt is fixed bottom surface, and spring lower end is connected ground surface;Vibration is transmitted to grinding vessel by platform by transmission connecting mechanism;The utility model can solve the technical problems that vibration transmission efficiency is low, grinding uniformity is poor and equipment stability is insufficient in the vibration platform structure of spherical graphite vibration grinding equipment in the prior art.

This utility model discloses a quick-assembly, anti-loosening automotive electronic fan, comprising: a main unit including a housing, wherein the housing is symmetrically provided with skirts, and the skirts are symmetrically provided with fixing holes; an installation unit including fixing pins fixed to the automotive radiator, the fixing pins being positioned corresponding to the fixing holes, the fixing pins having slots; symmetrically provided pry bars on the skirts, one end of the pry bar extending into the slot, the bottom of the pry bar having a lever, the bottom end of the lever abutting against the top end of the skirt; and the installation unit further including a drive assembly for driving the other end of the pry bar to move vertically. This utility model controls the engagement of the pry bar and the slot through the drive assembly, eliminating the need to tighten multiple bolts and nuts individually with tools. Compared to traditional bolt and nut installation methods, this significantly shortens installation time, improves assembly efficiency on automotive production lines, and reduces labor costs.

This utility model relates to the field of vibratory feeder technology and discloses a vibratory feeder for a flow regulator, including a base, a sliding frame slidably connected inside the base, a supporting shell fixedly connected to the top of the sliding frame, a sliding rod slidably connected inside the supporting shell, and a vibratory feeder fixedly connected to the top of the sliding rod. This utility model utilizes the linear displacement characteristics of the threaded rod to precisely control the position of the moving block, thereby flexibly adjusting the rotation radius of the connecting column. This design allows the vibration amplitude to be adjusted in real time according to material characteristics such as weight, surface friction coefficient, or flow requirements, enhancing the equipment's adaptability to different working conditions. The threaded connection structure avoids the risk of slippage or jamming of the moving block, while the meshing of the first bevel gear with the drive motor transmits high torque, ensuring smooth and controllable changes in vibration amplitude during adjustment, and preventing material spillage or equipment resonance caused by sudden changes.

This utility model discloses a yarn guiding mechanism for a spinning frame, relating to the field of textile machinery and equipment technology. The mechanism includes a mounting frame, a mounting shaft, multiple adjusting components, and multiple yarn guiding components. Each adjusting component has a fixing member at its bottom. The multiple adjusting components are evenly arranged on the mounting shaft via the fixing members, and the yarn guiding components are mounted on the adjusting components. A drive motor in the yarn guiding component directly drives the rotating shaft and the roller, precisely controlling the speed and trajectory of the yarn during guidance, effectively suppressing tension fluctuations, significantly reducing the probability of yarn breakage and tangling, and minimizing raw material waste. The ceramic layer and PTFE lubricating layer on the surface of the roller and the limiting hole provide double protection. The ceramic layer is wear-resistant and damage-resistant, while the PTFE lubricating layer reduces the coefficient of friction, preventing yarn fuzz and meeting the stringent quality requirements of the high-end market.

The utility model discloses a blister tray structure for electronic component relates to material handling tray technical field, including integrated tray, the lower portion of integrated tray is provided with rotating cylinder, and the lateral wall of rotating cylinder is provided with offset guide, and the upper portion of rotating cylinder is provided with translation frame no.

The utility model discloses an anti-overflow draining pump structure for a duct type air conditioner, and belongs to the technical field of air conditioning equipment. The structure comprises a water tank shell and a detachably-connected drainage pump body, a water inlet is formed in the lower portion of the water tank shell to receive condensate water, and an upper drainage opening is formed in the upper portion of the water tank shell to serve as an emergency overflow channel. A liquid level sensor is arranged at the bottom end of the pump body to monitor the water level in real time, and a pump water outlet and a gradienter are arranged at the top end of the pump body. When the drainage pump breaks down, the water level rises to the upper drainage port and then is directionally drained through the water outlet pipe, and ceiling soaking is avoided; the buckle type connecting structure simplifies maintenance operation, and the sealing ring and the damping washer are matched to ensure sealing performance and operation stability. The design solves the problems that overflow detection of a traditional drainage pump lags behind, and disassembly and assembly are complex.

The utility model belongs to the technical field of medical equipment, and particularly relates to a water purifier water storage tank disinfecting and killing device which comprises a water storage tank cover body and a disinfecting and killing lamp source, the disinfecting and killing lamp source is arranged in an installation through groove formed in the water storage tank cover body in the axial direction, and a heat dissipation assembly is arranged on the disinfecting and killing lamp source. At least one part of the heat dissipation assembly extends out of the mounting through groove towards one side of the cover face of the water storage tank cover body and is covered with a protective cover, and a plurality of through holes are formed in the protective cover and correspond to the heat dissipation assembly for air flow circulation. The heat dissipation assembly is arranged on the disinfection lamp source for heat exchange and heat dissipation, the working environment of the disinfection lamp source is greatly reduced, the service life of the disinfection lamp source is effectively prolonged, the working stability of the disinfection lamp source is effectively improved, through holes are formed in the protective cover to form airflow circulation, and heat flow is directionally and efficiently discharged out of the device.

The application discloses a clothes treating apparatus, which comprises a cabinet, a drum assembly and a damping assembly. The cabinet comprises a base, the drum assembly is above the base and comprises an inner drum, and the damping assembly is between the base and the drum assembly and comprises arc-shaped beams. The arc-shaped beams are all convex to the drum assembly, and are configured to reduce the convex height under the pressure of the drum assembly when supporting the drum assembly. The convex heights of the arc-shaped beams are all different, and the stiffness of the arc-shaped beams increases in turn according to the order of the convex heights from high to low. The end of each arc-shaped beam is movably arranged on the base. The arc-shaped beams are configured to: when the inner drum is in a static state, the top of at least one arc-shaped beam is in supporting contact with the drum assembly; and when the inner drum rotates relative to the cabinet, the arc-shaped beams are in supporting contact with the drum assembly in turn according to the order of the convex heights from high to low. The damping assembly is beneficial to avoiding that the drum assembly drives the cabinet to vibrate due to excessive vibration, and is beneficial to avoiding noise.

The utility model provides a counterbalance, a motor rotor assembly and a compressor, the counterbalance comprises a counterbalance main body, the counterbalance main body extends along the circumferential direction of a motor rotor, the counterbalance main body is provided with a windward end and a leeward end, and at least the windward end is provided with a suspended flow guide body extending along the circumferential direction of the motor rotor. A suspended overflowing space is formed between the side, close to the first end face, of the suspended flow guiding body and the first end face, and the suspended flow guiding body is provided with a flow guiding radial outer side face and a flow guiding radial inner side face. The flow guide radial outer side face gradually gets close to the radial inner side of the motor rotor and / or the flow guide radial inner side face gradually gets close to the radial outer side of the motor rotor so that the cross section of the suspended flow guide body can become smaller and smaller in the circumferential direction away from the balance block body. According to the utility model, the internal flow field of the compressor is effectively prevented from being disturbed due to the pumping effect, the operation noise of the compressor is reduced, and meanwhile, the oil spitting rate and oil spitting quantity of exhaust refrigerant of the compressor are reduced.

The invention relates to an oral cavity cleaning appliance which comprises a handle extending along a first axis and a flushing head movably arranged at the end of the handle. The handle comprises a shell, a movement device, a water storage area and a pump. A liquid storage cavity and a driving cavity separated from the liquid storage cavity are formed in the shell; the moving device is arranged in the driving cavity and used for driving the flushing head to reciprocate along the first axis; the moving device comprises a moving shaft, and a hollow runner extending along a first axis is arranged in the moving shaft; the moving shaft comprises a first end and a second end which are oppositely arranged, and the first end penetrates through the end, close to the flushing head, of the handle and is connected with the flushing head; the water storage area is arranged in the driving cavity; the second end extends into the water storage area, and the water storage area is used for providing a space for the movement shaft to move along the first axis; the pump is arranged in the driving cavity and communicates with the liquid storage cavity and the water storage area. The pump pumps liquid in the liquid storage cavity to the flushing head through the water storage area and the hollow flow channel.

The invention discloses a dumping type inner plug feeding method, and relates to the technical field of packaging machinery. According to the method, a traditional vibration disc is abandoned, and the brand new feeding principle that gravity dumping is combined with mechanical screening is adopted. The method comprises the steps that a rotary arm drives a material shovel to shovel up an inner plug from a hopper and pour the inner plug to an inner plug guide plate, a U-shaped groove structure of a straight vibration rail is used for receiving the inner plug, and the inner plug is made to be in various postures such as presetting, overturning, inclined placing and sideward placing; the side posture inner plug automatically falls back from the hollow groove bottom; a screening brush which rotates synchronously with the rotating arm is arranged above the straight vibration track, the brush sweeps over the track once every half cycle, the inclined placing posture is corrected, and the turning posture is swept back to the hopper; and when the full material sensor detects that the track is full, the screening brush stops above the track to realize braking. The feeding noise is greatly reduced, the feeding speed can reach more than two times that of a traditional vibration disc, only the straight vibration rail needs to be replaced when the specification of the inner plug is replaced, and the feeding device has the advantages of being high in speed, low in noise and convenient to replace.

This application provides a containerized generator set, including a container, an engine, and a water tank. The container has a first air inlet. The engine is located inside the container. The water tank is located inside the container and is located on the side near the first air inlet. By placing the water tank and the engine in two separate chambers of the container, cooling air is prevented from flowing through high-temperature areas. This improves heat dissipation efficiency while reducing operating costs and noise, meeting high power requirements and facilitating transportation.

The application belongs to the technical field of air conditioners and heat management systems, and particularly relates to an integrated heat pump air conditioner and heat management system and a control method thereof, wherein the integrated heat pump air conditioner and heat management system comprises a refrigerant circulation system, a refrigerant liquid circulation system, a first heat management system and a second heat management system. The refrigerant circulation system, the refrigerant liquid circulation system, the first heat management system and the second heat management system provided by the application can ensure the heating, refrigeration, dehumidification and demisting and other functions and comfort of the vehicle air conditioner system, fully meet the needs of users, and meet the requirements of energy saving and consumption reduction, easy assembly, easy maintenance, good durability, high reliability and light weight, and the control method is intelligent, perfect and reasonable. In addition, the main scene used by the application has the characteristics of typicalization, simplification and rationalization, is conducive to the optimal design of the six-way valve and the eight-way valve, and thus the target of reducing water resistance and system operation noise is achieved.

This utility model discloses an air compressor filter device and an air compressor. The air compressor filter device includes a filter housing; a filter cover; the filter cover also forms a second chamber opening towards a first chamber; the air compressor filter device further includes: a filter shaft with opposing front and rear ends, the filter shaft having a T-shaped channel structure, the first and second ports of the T-shaped channel structure being located at the front end of the filter shaft and communicating with the second chamber, the third port of the T-shaped channel structure communicating with the inner hole of the air outlet connector; and an L-shaped channel structure, the L-shaped channel structure being located within the first chamber, one end of the L-shaped channel structure communicating with the air inlet, and the other end communicating with the second chamber. This application, by designing the L-shaped and T-shaped channel structures, changes the airflow path, allowing noise to circulate inside the filter, reducing the propagation decibels, and effectively reducing the noise generated during air compressor operation.

The utility model relates to the technical field of bending machine oil cylinder equipment, and specifically discloses a bending machine oil cylinder and sliding block coupling device, which comprises a sliding block, symmetrical oil cylinders and a coupling assembly, the bottom of the sliding block is provided with a mounting seat with mounting holes, the end of the oil cylinder piston rod is provided with a connector with double lug plates, the coupling assembly is interference press-fitted into the mounting holes through joint bearings, the connecting pin penetrates through lug plate connecting holes and joint bearing inner rings, the joint bearing outer ring is interference fitted with the mounting holes, and the connecting pin is threadedly connected with lock nuts at both ends, the joint bearings adopt a self-lubricating structure, and rubber pad layers are additionally arranged in the lug plate connecting holes, the utility model eliminates eccentric load stress through the self-adaptive alignment ability of joint bearings, combines self-lubricating and damping design, and significantly prolongs the service life of the equipment.

The utility model relates to power motor technical field, especially a wheel hub motor, including fixed main shaft, output motor, transmission assembly, output box and wheel hub rubber, be provided with the accommodation cavity in the output box, the output motor sets up in the accommodation cavity, transmission assembly sets up in the accommodation cavity and is connected with the output end of output motor, be provided with transmission connecting ring in the accommodation cavity, transmission connecting ring is connected with transmission assembly, the output motor is used for driving transmission assembly transmission to drive output box rotation, fixed main shaft sets up at the axle center department of output box, and passes through output motor and transmission assembly in proper order, wheel hub rubber sets up at the outside of output box, the utility model has obvious technical advantage in reliable transmission, high degree of integration, environmental protection, maintenance convenient and production controllability etc.

The application provides a RV reducer with rotatable damping needle tooth and an assembling method thereof. The reducer comprises a cycloid, a constraint ring, a movable needle tooth, a base and a positioning bolt. The inner side of the constraint ring is provided with a first arc-shaped groove, and the inner side of the base is provided with a second arc-shaped groove. The two arc-shaped grooves are matched to form an annular cavity for accommodating the movable needle tooth. The movable needle tooth is composed of a main body and a detachable end cover. The inner part of the main body is provided with a hollow cavity for injecting high-damping material. The application further discloses an assembling method and a wear compensation method of the reducer. When the transmission gap increases, the torque of the positioning bolt is increased in a star-shaped cross sequence to restore the transmission gap. The application has the advantages of compact structure, good damping performance, high transmission precision and convenient maintenance.

This utility model discloses a modular intelligent narrow-body frequency converter cabinet system, comprising: a narrow-body cabinet with internal module installation space, air inlet, and air outlet; a modular backplane system integrating a main circuit busbar and a control / auxiliary power bus; at least one standard functional module with standardized mechanical and electrical interfaces, pluggably installed in the cabinet and connected to the backplane system for implementing specific power conversion or control functions; and an intelligent thermal management system including a temperature sensor, an adjustable-speed fan, and a fan controller, capable of adjusting the fan speed according to temperature information to control airflow within the cabinet. This utility model, through modular design and intelligent thermal management, achieves high system integration, excellent maintainability, flexible configuration capabilities, and efficient heat dissipation, making it suitable for high-power frequency converter applications in industrial drives, new energy, and other fields.

The application discloses a negative pressure wound exudate anti-overflow system and a negative pressure suction device. The negative pressure wound exudate anti-overflow system collects backflow exudate by means of a liquid collecting box, and realizes automatic liquid discharge through linkage of a liquid level sensor and a perfusion pump, thereby preventing wound exudate from invading a negative pressure pump assembly. The negative pressure suction device integrates the system, and is provided with a shock-absorbing holder, a silencer and a sealed sound insulation shell, so that the whole machine is shock-absorbed and noise-reduced. The scheme can prevent exudate overflow and backflow, stably maintain treatment negative pressure, and is quiet and stable in operation, and meets the use requirement of long-term negative pressure wound treatment in a ward.

The utility model discloses an anthropomorphic dexterous hand and humanoid robot adopting the anthropomorphic dexterous hand. The utility model discloses an anthropomorphic dexterous hand, and the finger driving mechanism includes at least one layer of finger driving motor layer, is equipped with a plurality of finger driving motors in each layer of finger driving motor layer, and each finger driving motor is connected with the finger joint of corresponding hand component through the traction rope, and the number of finger driving motors in each layer of finger driving motor layer is less than or equal to 4; the output shaft of all finger driving motors is outwardly arranged, and the projection in the plane perpendicular to the length direction of arm component does not coincide. The utility model also discloses a humanoid robot, and the anthropomorphic dexterous hand adopting any of the above schemes. The utility model has the advantages of: avoiding the mutual friction, winding and even cutting caused by the path intersection and contact of multiple traction ropes in the narrow space, so that the overall form of the robot arm is more close to the thickness of real human body arm.