79results about How to "Close in time" patented technology

The invention belongs to the technical field of gas production wellhead devices, and particularly relates to a 175MPa gas production wellhead device which comprises a gas production tree assembly and a tubing head assembly, the gas production tree assembly comprises a gate valve body, the gate valve body comprises a driver and a hand lever, and a protection assembly is installed between the driver and the hand lever; the protection assembly comprises a connecting shaft, a hand lever, a driver, a transmission sleeve, a steel rope, a high-strength spring, a transmission ring, a connecting block, a rotating groove and a transmission column. When the driver operates, the driver drives the connecting shaft to rotate, the connecting shaft rotates to drive the transmission column on the transmission ring to rotate synchronously, after the transmission column is in contact with the steel rope, the connecting shaft drives the steel rope to twist through the transmission column, and at the moment, the transmission sleeve moves towards the direction of the connecting shaft, so that the transmission sleeve is separated from the hand lever; and the phenomenon that the valve cannot be normally opened due to physical interference between the hand lever and the output shaft of the driver caused by mistaken rotation of the hand lever in the operation process of the driver is avoided.

The present invention discloses an evaporator with a cold storage function, and relates to the technical field of evaporators. The evaporator comprises a device body, a leakage prevention device and a supporting device, wherein a mounting plate is fixedly mounted on the surface of the device body, a storage device is fixedly mounted on the surface of the mounting plate, a delivery pipe is fixedly mounted on the surface of the device body, and a connecting valve is fixedly mounted on the surface of the delivery pipe; wherein the leakage prevention device comprises a control valve, a rubber sleeve, a gear, a rack, a push plate, a contact plate, a transverse plate, a rotating plate, a fixed block, a fixed plate, an elastic plate and a storage frame, when the push plate moves, the transverse plate is driven to move, when the transverse plate moves, the rotating plate and the fixed block are driven to move, the fixed block performs one-way position limiting on the rotating plate, the storage frame is fixedly mounted on the surface of the device body, the push plate pushes the rubber sleeve to fit more closely, and prevents the rubber sleeve from gradually loosening and affecting the sealing effect.

The invention relates to the technical field of electrical equipment temperature detection, and discloses an electrical equipment temperature measuring device for a power plant, which comprises a cabinet body, two sliding rods are fixedly connected to the two sides in the cabinet body, sliding sleeves are slidably connected to the outer sides of the multiple sliding rods, a fixing frame is fixedly connected to one side of each sliding sleeve, and the fixing frame is fixedly connected to the other side of the cabinet body. A threaded sleeve is fixedly connected between every two adjacent fixing frames, and a lead screw is arranged at the center position between every two sliding rods located on the same side. According to the invention, the occupation amount of the internal space of the cabinet body can be reduced, the utilization rate of the internal space of the cabinet body is greatly improved, and the circulation of air in the cabinet body can be accelerated, so that the interior of the cabinet body is rapidly cooled, the cooling effect of the interior of the cabinet body is improved, an electric fan can blow more electrical equipment, and the service life of the electrical equipment is prolonged. And more heat of the electrical equipment is blown out, so that the interior of the cabinet body is better cooled.

The utility model discloses an ash removal device for hollow brick processing, relates to the field of hollow brick processing, and solves the problems that an existing ash removal device adopts a brush for cleaning, hollow bricks with different lengths are difficult to clean by the brush, cleaning omission easily exists in the cleaning process, the ash removal work is difficult to complete in the actual use process, and the cleaning efficiency is high. The device comprises a bottom plate, a conveying assembly is fixedly installed at the top of the bottom plate, and a cleaning assembly is fixedly installed at the top of the bottom plate; and the cleaning assembly comprises an air compressor and a hose, the air compressor is fixedly installed at the top of the bottom plate, and the hose is fixedly connected with the output end of the air compressor. According to the hollow brick cleaning device, hollow bricks can be cleaned, so that the surfaces of the hollow bricks are cleaner, the hollow bricks can be cleaned repeatedly, the situation that residues exist is prevented, the surfaces of the hollow bricks are cleaner, harm of dust to respiratory tracts or eyes of workers is reduced, and the using effect is improved accordingly.

A one-way valve comprises a plastic valve bead, a valve seat and a limiting device. The limiting device comprises an elastic part, and one end of the elastic part is provided with a contact part. The limiting device is arranged in the mode that in the first position, the limiting device does not make contact with the plastic valve bead or makes contact with the plastic valve bead but does not exert acting force on the plastic valve bead, and when the plastic valve bead moves from the closed first position to the opened second position under the action of the acting force of the product, the plastic valve bead is matched with the contact part. And when the acting force is removed, the plastic valve bead is pressed to a third position under the elastic force action of the elastic part, and the third position is located between the first position and the second position and is close to the first position. The one-way valve is used for the pressing pump and can be closed in time after a product stops flowing, and therefore the problems that the pressing pump is large in air compression frequency, small in pump output and the like are solved. The invention further relates to the pressing pump comprising the limiting device.

The utility model discloses a quick closing cut-off ball valve, which relates to the technical field of ball valves and comprises a shell, an air inlet pipe is connected to one side of the shell, a valve core is rotatably connected to the inside of the shell, a valve rod is connected to the top end of the valve core, and the top end of the valve rod penetrates through the top end of the shell and is connected with a driven gear. A moving plate is slidably connected to one side of the top end of the air inlet pipe through an adjusting mechanism, a transverse plate is connected to the middle of one side of the moving plate, and a driving gear is rotatably connected to the bottom end of the transverse plate and engaged with the driven gear; the ball valve has the advantages that the driving gear is matched with the driven gear, the valve rod drives the valve element to rotate, the ball valve is controlled to be automatically and rapidly opened and closed, the movable plate is matched with the transverse plate, the driving gear is disengaged from the driven gear, then the ball valve is disengaged from automatic control, and the valve rod can be manually rotated; therefore, when the automatic control structure is damaged, the ball valve can be manually controlled to be closed in time.

The invention discloses a direct-current electric control hoist emergency operation device and an operation method. The emergency operation device for the direct-current electric control hoist comprises a clutch, a speed reducer, a direct-current motor and a direct-current driving system, a working shaft of a direct-current motor controlled by a direct-current driving system is connected with an input shaft of a speed reducer, and an output shaft of the speed reducer is in transmission connection with a clutch installed at the power input shaft end of the hoist. A hydraulic control emergency operation device is changed into the direct-current electric control emergency operation device, the direct-current motor is high in efficiency and large in output torque, the efficiency can reach 90% at the rated rotating speed, the efficiency is reduced when the rotating speed is larger than or smaller than the rated rotating speed, and the requirements that the higher the lifting efficiency is, the better the descending efficiency is and the better the descending efficiency is during emergency operation of the hoist are met; and the size and the weight of the hoist emergency operation device are greatly reduced. Meanwhile, the emergency operation method is simple in step, convenient and fast, the gate can be closed in time within the set time, and fault expansion is avoided.

The utility model relates to the technical field of mobile houses, in particular to a sliding control mechanism of a starry sky skylight, which comprises a mobile bin, a skylight arranged on the top of the mobile bin, a movable baffle mounted on the inner side of the skylight, mobile components mounted on two sides of the movable baffle on the inner wall of the top of the mobile bin, and a rainwater sensor mounted on the top of the mobile bin. In the sliding control mechanism of the starry sky skylight, the mechanism is provided with the rainwater sensor, so that the weather change, especially the rainfall condition, can be automatically sensed. Once rainwater is detected, the sensor can immediately send a signal to the control panel, the trigger motor drives the lead screw to rotate, then the lead screw sliding block and the limiting sliding block drive the movable baffle to be automatically closed, the rainwater is effectively prevented from invading the movable bin, and the safety of internal facilities and residents is protected. The user does not need to manually close the skylight, and the skylight can be timely closed even at night or under the condition that the user is absent, so that the operation convenience is greatly improved.

The present invention discloses a comprehensive oxygen socket with a high-sensitivity lung valve mechanism, comprising a seat body, a diaphragm, a rocker arm, a valve rod and a valve seat, wherein a sensing inner cavity, a constant pressure inner cavity, an air inlet, an air outlet and a strip-shaped valve rod mounting hole are arranged in the seat body, the air outlet is connected with the sensing inner cavity through a control airway, the diaphragm is arranged between the sensing inner cavity and the constant pressure inner cavity, the valve rod is arranged in the valve rod mounting hole, the valve seat is installed in the seat body, the first end of the valve rod contacts with a position on the rocker arm close to the first end and forms a transmission contact point, the distance between the second end of the rocker arm and the transmission contact point is at least three times the distance between the pin shaft and the transmission contact point, and a gap is arranged between the second end of the rocker arm and the diaphragm in a normal state. The present invention realizes the purpose of significantly reducing the inhalation resistance, making the inhalation easier, and providing a comfortable oxygen inhalation experience by arranging a rocker arm transmission structure with an efficient lever function.

The embodiment of the invention provides a heating element control system and method based on a base station and the base station. The system comprises a system control part, a water supply part, a flow detection part and a heating part, the water supply part is used for injecting water into the pipeline. The flow detection piece is used for detecting the water flow in the pipeline. And the heating piece is used for heating water injected into the pipeline by the water supply piece. The system control part is electrically connected with the flow detection part and the heating part and used for controlling on-off of the heating part according to the water flow detected by the flow detection part. By arranging the flow detection part, the water flow in the pipeline can be detected in real time in the process that the water supply part injects water into the pipeline, so that the system control part can control the heating part to be turned on or turned off according to the water flow detected by the flow detection part, and it is ensured that the heating part can be turned off, a filter element can be replaced or descaling can be conducted in time when the pipeline is blocked; resource waste caused by too early user operation is avoided, potential safety hazards caused by too late user operation are avoided, and user experience is good.

The invention relates to the technical field of remote monitoring devices, in particular to a wind power equipment remote monitoring device based on the internet of things, which comprises a wind power equipment body, the wind power equipment body comprises a support column, a power generation part and fan blades, a monitoring box is arranged on the power generation part, a circuit board is arranged in the monitoring box, a temperature sensor is arranged in the power generation part, and the fan blades are arranged on the support column. A circuit board is arranged on the power generation part, a processor is arranged on the circuit board, a camera for monitoring the fan blades is further arranged on the power generation part, the camera is electrically connected with the processor, a wireless module matched with the processor is arranged on the circuit board, and the processor is externally connected with a cloud platform through the wireless module. The internal temperature of the power generation part is monitored in real time by arranging a temperature sensor, detected data are transmitted to a cloud platform through a processor and a wireless module, remote monitoring of an operator is facilitated, and heat in the monitoring box is dissipated by arranging an air inlet and an air outlet to be matched with a heat dissipation structure.

The utility model discloses a fuel gas detector, which comprises a shell, a detector body, a detection tube and a detection probe, and is characterized in that an accommodating cavity is formed in the shell; the detector body is mounted in the accommodating cavity, and a concentration threshold value of methane is preset in the detector body; the detection tube is arranged outside the shell, and one end of the detection tube extends into the accommodating cavity; the detection probes are arranged at one end, far away from the shell, of the detection pipe, and the multiple detection probes are arranged at intervals and are used for independently detecting the to-be-detected gas. The utility model provides a fuel gas detector which solves the problem that the detection result of an existing detector is not accurate.

This utility model relates to the field of valve technology, and in particular to a two-way valve and an explosion-proof valve. The two-way valve provided by this utility model includes a housing and a fixed base forming an air exchange channel, and a first movable member and a second movable member. At least a portion of the first movable member passes through the second movable member and extends into the fixed base. The first movable member is axially movable relative to the second movable member and the fixed base. When the first movable member moves in a first direction, the air outlet channel communicates with a first gap. When the first movable member pushes the second movable member to move in a second direction, the air inlet channel communicates with the first gap. The movement of the first movable member within the air exchange channel forms separate air outlet and air inlet channels, precisely controlling the airflow direction, avoiding turbulence and backflow, improving exhaust efficiency, and adapting to airflow pressure requirements in different directions.

The utility model discloses an intelligent experiment table for simulating gas explosion, which comprises a case assembly, the bottom of the lower end of the case assembly is connected with a lower supporting assembly through a fixing assembly, the two sides of the case assembly are respectively connected with a right side plate and a left side plate through fixing assemblies, and a placing assembly is arranged in the middle of the upper end of the case assembly. A house frame is arranged on the outer side of the placing assembly, transparent acrylic plates are symmetrically arranged in the middles of the two sides of the house frame, a combustible gas leakage detector is arranged on the outer side of the house frame, and meanwhile an inflation valve is arranged on the front side of the combustible gas leakage detector; a pressing plate is arranged on one side of the upper end of the machine box assembly and located between the combustible gas leakage detector and the inflation valve. According to the intelligent experiment table for simulating gas explosion, through the combustible gas leakage detector, the concentration of combustible gas leaked from the outer side of a house can be conveniently detected, it is ensured that the inflation valve can be closed in time after the leakage amount of the combustible gas of the test is reached, and the use safety is improved.

The invention discloses a large-mine-pressure extremely-easily-weathered broken roadway surrounding rock sealing method which comprises the following steps that S1, anchor rods and anchor cables are installed in a roadway, and an anchor net is laid; s2, preparing and spraying roadway surrounding rock; and S3, a polyurethane material for coal mine air blocking is sprayed to replace sprayed concrete to seal roadway surrounding rock, and the spraying thickness is not smaller than 50 mm. The surrounding rock can be closed in time after the coal mine tunnel is constructed, the surrounding rock of the tunnel is prevented from being weathered and broken, and reliability and effectiveness of overall supporting of the tunnel are guaranteed; the spraying layer can generate plastic deformation along with the deformation of the surrounding rock of the roadway under the action of large mine pressure, and does not crack and fall off; compared with the operation of spraying concrete to seal the surrounding rock of the roadway, the device can reduce the potential safety hazard of the top slope caused by cracking and falling of the roadway spraying layer, can greatly reduce the labor intensity, does not generate dust and toxic and harmful gas, purifies the operation environment, and can greatly reduce the occurrence probability of coal mine occupational diseases.

A catastrophe roadway remote self-adaptive closed air bag comprises an intrinsic safety type air bag storage box, a gas generation module and an expansion blocking module. The intrinsic safety type airbag storage box is used for storing the gas generation module and the expansion blocking module; the gas generation module is used for storing and releasing inert gas and located above the expansion blocking module, so that the inert gas rapidly enters the high-strength flexible airbag through the pressurization effect; the expansion blocking module is used for blocking poisonous and harmful gas generated by explosion, connected with the gas generation module and located below the gas generation module. According to the utility model, the mine multi-parameter fire hazard detector is combined with human perception, an underground fire source and a gas over-limit source are sensed in advance, identified dangerous factors are transmitted to the intrinsic safety type control motor and the alarm through electric signals, the gas generation module is triggered, and early warning of underground safety accidents is realized.

This utility model discloses an underground civil defense ventilation structure for ventilation of underground civil defense facilities. It includes: several sets of ventilation pipe assemblies installed between the underground wall and the outside wall for ventilation of the underground civil defense facilities; each ventilation pipe assembly consists of an inner air module, a connecting pipe, and an outer air module. One end of the connecting pipe is connected to the inner air module, and the other end is connected to the outer air module; one end of the inner air module is connected to the underground civil defense facility, and the other end is connected to the connecting pipe; one end of the outer air module is connected to the external space of the underground civil defense facility, and the other end is connected to the connecting pipe; an outer air duct is installed on the outer air module, and at least two outer air branch pipes are installed on the outer air duct. One end of each outer air branch pipe is connected to the outer air duct, and the other end is connected to the external space of the underground civil defense facility. This solves the problems of ventilation efficiency and airflow control in underground civil defense passage structures.

The utility model discloses an oxygen pipe and atomizer pipeline storage device, and relates to the technical field of medical supplies. The oxygen pipe and atomizer pipeline storage device comprises a connecting plate, a storage basket, a timer and a buzzer alarm are fixedly connected to the outer surface of the connecting plate, a pasting block and a suction cup are fixedly connected to the side, away from the storage basket, of the connecting plate, and a pipeline storage mechanism is fixedly connected to the lower surface of the storage basket; the pipeline storage mechanism comprises a storage column, a first cover shell and a second cover shell, a first through pipe groove is formed in the outer surface of the storage column, and second through pipe grooves are formed in the inner surfaces of the first cover shell and the second cover shell, so that the pipelines can be stored in order, the situation that the pipelines are wound in a mess is avoided, the situation that the pipelines are folded can also be avoided, and the pipeline storage efficiency is improved. In addition, the whole device is doubly fixed to the wall face through the pasting blocks and the suction cups, and therefore the oxygen pipe and the atomizer can be stored more conveniently.

The present invention relates to the technical field of engine combustion chamber coating preparation, and proposes an engine combustion chamber coating preparation, processing and preservation device, comprising: a support seat and a bracket fixedly connected to the top of the support seat, a filling barrel is installed on the inner side of the bracket, the output end of the filling barrel is connected to a first hose, the bottom of the first hose is fixedly connected to a first connecting ring, a third hose is installed at the discharge port of the first connecting ring, and a filling head is installed at the discharge port of the third hose. The present invention sets an auxiliary preservation mechanism, so that the viscous material inside the filling barrel can flow in from the bottom end of the preservation tank and spread upward, avoiding the viscous material after the engine combustion chamber coating is prepared from contacting with air in large quantities during the filling process, thereby avoiding a large amount of oxygen inside the filled material, and thus ensuring the stability of the raw materials during storage.

The utility model provides an intelligent transfer type automatic feeding platform capable of achieving centralized feeding, belongs to the technical field of plastic extruding machine corollary equipment, and solves the problem that a traditional manual feeding mode is insufficient. A feeding transfer layer plate of the feeding platform is erected above the plastic extruding machine through a frame body, and the plastic extruding machine is provided with a feeding port in the vertical direction. A feeding opening is formed in the vertical projection position, corresponding to the feeding opening, of the feeding transfer layer plate, and the feeding opening communicates with the feeding opening; an elevator is arranged on one side of the feeding and transferring layer plate and is used for lifting or descending the ton bag between the ground and the feeding and transferring layer plate; the conveyors are respectively arranged at a ground entrance and exit of the elevator and an entrance and exit of the feeding and transferring layer plate, and are used for inputting and outputting ton bags at the elevator; the AGV trolley is used for transferring ton bags on the feeding transfer layer plate; according to the utility model, the manual intervention can be reduced, the key functions of continuous feeding, energy consumption reduction, material tracking and the like are realized, and the efficiency of the extrusion molding process and the product effect are improved.

The utility model relates to the technical field of aluminum cathode carbon block groove milling, in particular to an aluminum cathode carbon block groove milling device which comprises a groove milling machine. The deviation preventing mechanism comprises electric push rods fixedly connected to the two sides of the inner wall of the slot milling machine, the telescopic ends of the electric push rods are fixedly connected with a push plate, and one side of the push plate is fixedly connected with two air storage cylinders; according to the device, flexible constant-pressure clamping of the aluminum cathode carbon block is achieved through an electric push rod, an air storage cylinder, a first spring, an exhaust pipe and a rubber plate, timely closing of the electric push rod is achieved through the rubber plate and a pressure sensor, and then it is guaranteed that the rubber plate abuts against the side face of the aluminum cathode carbon block in a constant-pressure mode; compared with an existing cathode carbon block which is prone to deviation in the milling process, the cathode carbon block is stably clamped, excessive clamping of the cathode carbon block for aluminum is avoided, and the milling effect of the cathode carbon block for aluminum is guaranteed.

The utility model provides a concrete curing box, and relates to the technical field of concrete curing boxes, the concrete curing box comprises a concrete curing box, and a matching cavity of a rectangular cavity structure is formed in the position, adjacent to the lower side of a curing chamber, in the concrete curing box; when a box door in the concrete curing box is in a closed state, the box door completely covers the opening end part of the front side of the insertion opening; the monitoring shell and the concrete curing box are arranged in the same power supply circuit, when the concrete curing box is powered on and started, the monitoring function of the concrete curing box can be synchronously started, state judgment on a box door is achieved through timing monitoring, and if a worker forgets to close the box door, the box door is closed after timing is exceeded. According to the concrete curing box, warning reminding is achieved for workers at the first time, and the problem that due to the fact that an existing concrete curing box does not monitor and judge the state of a box door, when the box door is in a long-time unfolding state, timely reminding cannot be achieved for the workers is solved.

The infrared drying oven comprises an oven body with an opening in one side, the interior of the oven body is divided into an upper cavity and a lower cavity through a partition plate, the interior of the upper cavity is in sliding connection with an upper bracket through a first sliding assembly, and the interior of the lower cavity is in sliding connection with a lower bracket through a second sliding assembly. Infrared heaters are respectively arranged at the inner top of the upper cavity and the inner top of the lower cavity, and electric heaters are further mounted in the upper cavity and the lower cavity. When the interior of the box body is initially heated, the electric heater and the infrared heater are synchronously turned on, the infrared heater is mainly used for drying a core material, the electric heater is mainly used for increasing the temperature of the box body, and the two heaters act together, so that the temperature rise speed of the box body is increased, the time required for drying and softening the core material is shortened, and in addition, the heating efficiency is improved. And when the temperature in the box body reaches a required interval, the electric heater is turned off, and only the infrared heater is used for drying the core material, so that the energy consumption is reduced, and the cost is reduced.

The utility model relates to the technical field of chemical equipment safety, and particularly discloses a storage tank discharging pipeline pressure relief structure which comprises a storage tank, the storage tank is connected with a discharging pipeline, the discharging end of the discharging pipeline is connected with reaction equipment, the discharging pipeline is provided with a discharging pump and a one-way valve, and the discharging pump and the one-way valve are both connected with a control box. According to the utility model, the potential safety hazards of pressure building expansion, pipeline displacement, sight glass burst and the like of the discharge pipeline caused by the long discharge pipeline in the prior art are solved, and the discharge pipeline pressure relief device is very suitable for large factories with more storage tanks and farther production workshops; and during pressure relief, redundant gas generated by thermal expansion of the materials due to high temperature can be exhausted out of the pipeline through the pressure relief assembly in the exhaust pipe, and the potential safety hazard that the redundant gas flows back into the storage tank, and the air pressure in the storage tank is increased is avoided.

The utility model relates to the technical field of mixers, and discloses a pharmaceutical mixer which comprises a box body, a cover plate is fixedly mounted at the top of the box body, and a box body is fixedly mounted at the top of one side of the box body; an electric heating pipe is fixedly installed on one side wall of the box body, a discharging pipe is arranged in the middle of the lower surface of the box body in a communicating mode, and a valve is installed on the discharging pipe. A motor is fixedly mounted in the middle of the upper surface of the cover plate, a stirring rod is fixedly mounted at the bottom of a transmission shaft of the motor, and a feeding hopper and an observation window are arranged on two sides of the top of the cover plate. By arranging the spiral blade, the charging barrel and the material pump, the material pump can be started, and the three groups of branch pipes with different heights are communicated with the charging barrel, so that the material pump can be matched with the charging barrel and the branch pipes to pump materials at different positions in the box, the materials can be mixed by the spiral blade after entering the charging barrel, and then the materials are fed into the box body through the feeding pipe; a unique stirring structure and a mixing mode are added, so that various pharmaceutical raw materials can be uniformly mixed, and the consistency of medicine components is guaranteed.

The vibration blanking hopper comprises a hopper body, a discharging port is formed in the hopper body, a push-pull rod is arranged on the hopper body, a spring is arranged on the push-pull rod in a sleeving mode, a baffle is arranged on the discharging port, the baffle is installed on the push-pull rod, a positioning part is arranged on the push-pull rod, and the positioning part is arranged on the hopper body. The positioning part is connected with the hopper body, the spring is located on the positioning part, and the spring can be compressed or reset by moving the push-pull rod in the axial direction so as to drive the baffle to be communicated with or disconnected from the discharging port. According to the vibration blanking hopper, the size of the discharging port can be adjusted, the blanking speed can be controlled, the discharging port can be conveniently closed in time after the blanking amount meets the requirement, blanking overweight is prevented, the discharging port can be completely blocked, and in the transferring process of the hopper body, materials can be prevented from being spilled out of the discharging port. The utility model further provides an automatic blanking device. The automatic blanking device comprises the vibration blanking hopper and also has the beneficial effects.

The utility model discloses a turbine shell polishing device, which relates to the technical field of turbine shell processing, and comprises a box body, a support is fixedly arranged below the box body, a control box is fixedly arranged above the box body, a square opening is formed in a front panel of the box body, a cabin door is hinged in the square opening through a hinge, and the cabin door is connected with the control box. First linear sliding rails are transversely, oppositely and fixedly arranged at the bottom in the box body, a movable fixing structure is arranged above the first linear sliding rails in a sliding mode through sliding blocks, a plurality of sliding rods are arranged on the outer sides of the first linear sliding rails, rodless air cylinders are arranged on the sliding rods in a sliding mode, and movable grinding structures are fixedly arranged on the rodless air cylinders. The movable fixing structure transversely moves on the sliding rail through the first linear sliding rail, and the rodless air cylinder enables the movable polishing structure to move in the vertical direction along the sliding rod.

The utility model discloses a Bluetooth earphone with an active noise reduction function, relates to the field of Bluetooth earphones, and solves the problems that an existing Bluetooth earphone can only be clamped on a neck, is liable to fall and break in a running process, is liable to be stolen in noisy scenes such as a station, and can increase unnecessary loss. Comprising a noise reduction earphone body, anti-falling assemblies are arranged on the two sides of the noise reduction earphone body respectively, and a ventilation assembly is arranged at the top of the noise reduction earphone body; the anti-falling assembly comprises a first fixing block and a first connecting rope, and the first fixing block is fixedly installed on one side of the noise reduction earphone body. According to the anti-theft device, a very good anti-falling function can be achieved, the situation that the whole device falls and is broken can be prevented, the cost caused by breaking is further reduced, a very good anti-theft effect can be achieved in scenes such as stations, the situation that the whole device is lost is further reduced, and unnecessary troubles and economic losses are also reduced.

The utility model belongs to the technical field of hemostasis, and particularly relates to a compression hemostasis device used after limb puncture in interventional therapy. An expansion bag is fixedly installed on the inner side of the rear plate, an inner box is fixedly installed on the back face of the rear plate, hemostatic sponge is arranged on the surface of the expansion bag, a booster pump is arranged in the inner box, a reinforcing rod is fixedly installed on the outer side of the booster pump, and a power transmission ring plate is fixedly installed on the outer side of the reinforcing rod. Through the arrangement of the rear plate, an expansion space can be conveniently provided for the expansion bag, the rear plate is made of a rubber material and can be better attached to the skin, the experience feeling of a user can be enhanced, the expansion bag can be controlled by a booster pump on the back of the expansion bag to expand, and a hemostatic sponge is arranged on the surface of the expansion bag; the hemostatic sponge can be synchronously attached to a wound, hemostatic liquid medicine contained in the hemostatic sponge is squeezed out and smeared to the wound, the hemostatic capacity of the device can be greatly improved through the hemostatic liquid medicine, and therefore the recovery efficiency of a patient is improved.

The invention discloses a motor control system with a dual power-on protection function. The system comprises a plurality of functional modules such as a power-on protection module, a current sampling and overcurrent protection module, a temperature detection module, a dormancy module and a self-checking module, can effectively monitor the running state of the motor, automatically performs system self-checking, and triggers a protection mechanism in time when an abnormal condition occurs. By means of dual power-on protection, overcurrent protection, over-temperature protection and other protection means, the safety and stability of the motor control system are effectively improved, equipment damage caused by mistaken starting, overcurrent protection, over-temperature protection and other faults is avoided, and it is ensured that a motor efficiently operates under the safe condition.