66 results about "Air line" patented technology

The utility model discloses a trailer air pipe protection device, including the steel ring, the steel ring is provided with several, and the adjacent steel ring is connected with several first springs, and the steel ring at both ends all are connected with fixed block through connecting rope, and the fixed block is fixed with the ribbon, and the ribbon is provided with equidistance arrangement's locating boss, and the fixed block is opened with first through -hole, second through -hole, third through -hole that communicate in proper order, and the ribbon slidingly penetrates first through -hole, and the second through -hole is slidably installed with the sliding block, and the sliding block is connected with second spring between the inner wall of second through -hole, and the sliding block is fixed with the plug -in block, the utility model discloses through the steel ring can protect the air pipe, and, through the contraction of first spring can assist air pipe contraction, avoid the problem that air pipe cannot contract because of aging.

The invention relates to a compressed-air supply unit (10) for a vehicle (50), having: an air compressor (12), which can be connected or is connected to an air supply (11), for providing compressed air (13) at a compressed-air provision connection (15), wherein the air compressor (12) has an air compressor housing (16); a drying device (18), which can be connected or is connected to the compressed-air provision connection (15) via a compressed-air supply line (17), for drying the compressed air (13) provided at the compressed-air provision connection (15), wherein the drying device (18) can be operated in a drying mode (19) and in a regeneration mode (20); a compressed-air supply connection (22), which can be connected or is connected to the drying device (18) via a compressed-air supply line (21), for providing dried compressed air (13) at the compressed-air supply connection (22) in the drying mode (19) of the drying device (18); a regeneration-air line (23) for connecting the compressed-air supply connection (22) or a regeneration-air connection to the drying device (18) for dehumidifying the drying device (18) with regeneration air (14) provided at the compressed-air supply connection (22) or at the regeneration-air connection in the regeneration mode (20) of the drying device (18); and a venting line (24) for connecting the drying device (18) to a vent (25) for discharging the regeneration air (14), wherein the drying device (18) is arranged outside the air compressor housing (16) and the regeneration-air line (23) has a heat transfer portion (26) which is arranged inside the air compressor housing (16).

The utility model discloses a pressure switch testing device and a vehicle, and relates to the vehicle field, the pressure switch testing device is internally provided with a pressure sensor, a controller, a pressure switch motion detection plug and a switch module, the controller is firstly used to control the switch module to be turned on, so that air enters an air pipeline where a pressure switch is located; the state of the pressure switch after air inflow is collected through the pressure switch action detection plug, the pressure of the pressure switch is collected through the pressure sensor, and finally the controller can determine whether the pressure switch breaks down or not in time based on the state of the pressure switch and the pressure of the pressure switch; and timely determining whether the rail vehicle where the pressure switch is located has a fault or not.

The invention belongs to the technical field of automobiles, and relates to an aerodynamic rim blade assembly and a using method thereof. The air pipeline is communicated with the compressed air supply unit; the blade movement mechanism is arranged on the rim blade and comprises an air cylinder and a blade which is in transmission connection with a piston rod of the air cylinder; wherein the air pipeline extends to the wheel end and is communicated with a working cavity of the air cylinder, an electromagnetic valve controlled by an electronic control unit of the whole vehicle is arranged on the air pipeline, and compressed air can be selectively guided into or discharged out of the working cavity of the air cylinder by controlling opening and closing of the electromagnetic valve. The driving device is used for driving the blades to move between the opening position and the closing position. A mature compressed air supply unit of the whole vehicle is directly shared, the development and manufacturing cost of the system is greatly reduced, meanwhile, the layout of the whole vehicle is simplified, and popularization and application of the assembly are more economic and feasible.

The invention relates to a method for operating a compressed-air supply system (1), which supplies compressed air to connected compressed-air consumers (16, 18; 20) via at least one compressed-air line (24), wherein the compressed-air supply system has at least one compressor (2), an air dryer (5) and a switchover valve (12), the air dryer (5) having a granular adsorption desiccant (10), the switchover valve being actuable by means of an electronic control device (14), in a first switching position (A) of the switchover valve (12) moist compressed air generated by the compressor being passed over the grains of the adsorption desiccant in a drying phase, as a result of which the adsorption desiccant absorbs atmospheric moisture from the moist compressed air, and in a second switching position (B) of the switchover valve (12) dry compressed air taken from the compressed-air supply system being passed over the grains of the adsorption desiccant in a regeneration phase, as a result of which the adsorption desiccant releases moisture to the dry compressed air, which is then subsequently discharged to the surrounding area (28). According to the invention, a water load value indicating the current water load of the adsorption desiccant is ascertained in the control device, the water load value is determined by means of at least two numerical values, and the switchover valve (12) is controlled with respect to the start and the duration of the drying phase and / or the regeneration phase depending on the water load value.

The utility model discloses an air compressor integrated system which comprises an air compressor main body, an air inlet is formed in one end of the air compressor main body, an air flow meter and a temperature and pressure sensor are arranged at the air inlet, an outlet of the air compressor main body communicates with an inlet of an intercooler, the intercooler is arranged above the air compressor main body, and the air flow meter and the temperature and pressure sensor are arranged on the air compressor main body. An outlet of the intercooler and the air inlet are located on the same side, and a temperature sensor is arranged in the intercooler. The intercooler, the flow meter, the temperature and pressure sensor and the air compressor are integrated into a whole, so that the space occupied by an air pipeline in a system is greatly reduced, and the complexity of a special-shaped rubber pipe is reduced.

Device (1) for cleaning a plate heat exchanger (2), wherein the device (1) has the following features: a. A compressed air source (3) for providing compressed air for dry cleaning of the plate heat exchanger (2); b. A control box (4) which is connected to the compressed air source (3) via a first compressed air line (5) and to a slot nozzle (9) via a second compressed air line (8), wherein an electrically controllable valve (6) is arranged in the control box (4) between the compressed air lines (5, 8) connected to the control box (4), wherein the valve (6) is designed to open when actuated, so that compressed air flows to the slot nozzle (9); c. The slot nozzle (9) has at least one nozzle gap (16) which is surrounded circumferentially by a slot-shaped mouthpiece (11) which projects in the direction of flow (P) of the compressed air opposite the at least one nozzle gap (16).

The invention discloses an explosion-proof dispersion promoting system for a hydrogen storage area of a hydrogen production and hydrogenation integrated station and application. The explosion-proof dispersion promoting system comprises an air pipeline module and a monitoring communication module. The monitoring module detects leakage through a tank pressure and multi-azimuth hydrogen concentration sensor, an accident judgment unit judges the accident grade and controls a corresponding branch control valve and a main valve to be opened, a high-speed air outlet vertically and upwards sprays airflow, a firewall is matched to guide combustible hydrogen cloud to move to the high position, and dissipation is accelerated by means of natural wind gradient. And fire blast accidents caused by hydrogen cloud gathering are prevented. According to the system, millisecond-level response and directional accurate dispersion promotion are realized, the defects of low dispersion promotion efficiency and no directional response of the existing system are overcome, and the safety of the integrated station is greatly improved.

Compressed air supply unit (10) for a vehicle (50), comprising an air compressor (12) connectable to or connected with an air supply (11) for supplying compressed air (13) at a compressed air supply connection (15), wherein the air compressor (12) has an air compressor housing (16), a dryer unit (18) connectable to or connected with the compressed air supply connection (15) via a compressed air supply line (17) for drying the compressed air (13) supplied at the compressed air supply connection (15), wherein the dryer unit (18) is operable in a drying mode (19) and in a regeneration mode (20), a compressed air supply connection (22) connectable to or connected with the dryer unit (18) via a compressed air supply line (21) for supplying dried compressed air (13) at the compressed air supply connection (22) in the drying mode (19) of the Drying unit (18),a regeneration air line (23) for connecting the compressed air supply connection (22) or a regeneration air connection to the dryer unit (18) for dehumidifying the dryer unit (18) with regeneration air (14) supplied at the compressed air supply connection (22) or at the regeneration air connection during regeneration operation (20) of the dryer unit (18), and a vent line (24) for connecting the dryer unit (18) to a vent (25) for discharging the regeneration air (14), wherein the dryer unit (18) is arranged outside the air compressor housing (16) and the regeneration air line (23) has a heat transfer section (26) which is arranged inside the air compressor housing (16).

The invention discloses a water-cooled wall anti-corrosion system and method with secondary air flow equalization and adherence air cooperation. The system comprises a source adjusting unit, a tail end protection unit, a multi-parameter monitoring network unit and a controller. The source adjusting unit is an adjustable guide vane group in each secondary layer air bellow of the secondary air large air bellow and is in transmission connection with the angle executing mechanism; the tail end protection unit comprises a boiler side wall array type composite adherence air nozzle, an adherence air bellow and a compressed air pipeline, wherein the adherence air bellow and the compressed air pipeline are communicated; the multi-parameter monitoring network unit comprises an air volume sensor, a gas concentration sensor and a temperature sensor which are correspondingly arranged; and the controller is linked with each unit through a cable. According to the system, secondary air distribution can be dynamically adjusted, the stability of wall-attached air is improved, closed-loop regulation and control are achieved, the near-wall reducing atmosphere is eliminated in a two-dimensional mode, and the anti-corrosion effect and the boiler operation safety are improved.

A compressed-air supply system includes at least one compressed-air consumer, compressed-air lines, electrically controllable valves, a compressed-air controller for actuating the valves, a compressor having an electric motor as a drive, and a pressure reservoir. The compressed-air consumer can be pneumatically connected to the compressor and / or the pressure reservoir via the lines and the valves such that the compressed-air supply system can be operated either in an open or in a closed operating mode. The controller has an input for a current signal, which represents a motor current drawn or to be drawn by the electric motor. The controller is configured to actuate the valves in accordance with the open operating mode when a current signal is present at the current signal input, the current signal representing a mean motor current, the magnitude of which is equal to or greater than a maximum value for the motor current.

This invention relates to a testing device for individual modules of a locomotive air piping system, comprising a cabinet, a pressure testing mechanism and an electrical testing mechanism disposed inside the cabinet, and a test bench disposed outside the cabinet for placing the module under test. The pressure testing mechanism includes an air supply pipeline and multiple testing pipelines, and is used to perform airtightness testing on the module under test. The electrical testing mechanism includes a control unit and a drive unit, and is used to perform electrical logic testing on the module under test. An industrial control computer is connected to the electrical testing mechanism and the pressure testing mechanism, and the industrial control computer is used to generate and edit testing instructions. This invention can adapt to various independent module models, performing automatic testing on their airtightness, circuit and air circuit logic, pressure switches, and electric gates, and can also perform manual testing.

The invention relates to an electropneumatic brake device of a guided vehicle which can be coupled into a train set with at least one guiding vehicle, comprising a main air line (1) which can be coupled between adjacent vehicles of the train set so as to allow air to pass and actuates the compressed air brakes of the vehicles of the train set and the pressure of which in each guided vehicle can be influenced by means of at least one electrically switchable brake valve (2). The invention also relates to a method for carrying out a brake test using such an electropneumatic brake device. The electropneumatic brake device is intended to allow a reduced complexity and to allow an acceleration with regard to the brake test which is necessary during operation. This is achieved in that the brake device also has a switching means (831, 832) designed to interrupt the energization of the at least one brake valve (2), a sensor means (811, 812) designed to detect a fluidic state variable of the air in the brake valve connection line (11), and a control device (8) with an actuator interface (83) for outputting an actuation signal to the switching means (831, 832) and a first input interface (81) for receiving a state signal of the air in the brake valve connection line (11), said state signal being output by the sensor means (811, 812) after the switching means (831, 832) is actuated.

A vehicle air spring system and methods for controlling vehicle stability using air springs is provided. The vehicle air spring system includes an arrangement of air springs, pressure sensors, one or more air sources, air lines, and air valves that are monitored and regulated by an air pressure and stability control system. The air pressure and stability control system can be configured to utilize pressure sensor data, vehicle driving sensor data, and vehicle stability data to regulate the air pressure of the air springs and stabilize the vehicle. Additionally, the air pressure and stability control system can proactively adjust the air pressure of the air springs in anticipation of a potentially destabilizing event.

The invention relates to an electropneumatic braking device for a guided vehicle that can be coupled into a train consist with at least one leading vehicle. The device comprises a main air line (1) that is air-connectable between adjacent vehicles of the train consist and that controls the compressed air brakes of the vehicles of the train consist. The pressure of this main air line in each guided vehicle can be influenced by means of at least one electrically switchable brake valve (2). The at least one brake valve (2) is vented in the closed state and can be separated from the main air line (1) by means of a shut-off valve (12) arranged between the main air line (1) and the brake valve (2). This is intended to enable a reduction in effort and speed up the operationally necessary brake test.This is achieved by the braking device further comprising an input / output device (8) for outputting input signals receivable via at least one sensor interface (81, 82) to a train bus (9) and for outputting control signals receivable via a train bus (9) to at least one actuator interface (83), an electrical pressure sensor (811) connected to a first sensor interface (81) of the input / output device (8) and detecting the pressure in the air line between the shut-off valve (12) and the at least one brake valve (2), a means (122) connected to a second sensor interface (82) of the input / output device (8) for detecting the switching state of the shut-off valve (12), and a relay (831) connected to an actuator interface (83) of the input / output device (8), the switching contact (832) of which is configured to interrupt the energization of the at least one brake valve (2) when energized.

The present application provides an air suspension fault diagnosis method, device, equipment, and readable storage medium. The method includes: during the process of an air pump inflating a target object, monitoring the change of a first target parameter, wherein the first target parameter includes at least the pressure of the air pipeline where the air pump and the target object are located; if the change of the first target parameter meets a first condition, then isolating the air pipeline between the air pump and the target object and monitoring the change of a second target parameter, wherein the second target parameter includes at least the pressure of the air pipeline where the air pump is located; and determining the cause of the abnormal inflation of the target object by the air pump based on the change of the second target parameter. Through the present application, the cause of the abnormal inflation of the target object by the air pump can be accurately diagnosed, thereby reducing the difficulty of maintenance and improving maintenance efficiency.

The utility model discloses an automatic pressure maintaining test device for air tightness of an air pipeline of a bogie brake unit. The device comprises a remote control cabinet and a pressure maintaining test structure. The pressure maintaining test structure is arranged between an air supply source and a bogie brake unit air pipeline and comprises a control unit, a digital display screen and a pressure maintaining test pipeline. The pressure maintaining test pipeline comprises a manual ball valve, a pressure transmitter, an electric pressure reducing valve, an electric ball valve, a multi-way joint, an elbow and a direct pipeline, and the pressure maintaining test pipeline is arranged in a single-pipeline or multi-pipeline form; the control unit is connected with the pressure transmitter, the electric pressure reducing valve, the electric ball valve, the digital display screen and the remote control cabinet. From the aspects of cost, maintenance efficiency and informatization management application requirements, the purposes of reducing labor cost and labor intensity, improving maintenance quality and maintenance result informatization management level can be achieved, and train operation safety is guaranteed.

The utility model discloses a crankcase ventilation system and a vehicle, the crankcase ventilation system comprises a cylinder head cover, an air filter, an air inlet module, a connecting module and a ventilation pipeline, the connecting module comprises a first joint, a second joint and a sealing piece, the first joint comprises a connecting part and a diagnosis part connected to the peripheral side of the connecting part, and the second joint comprises a second joint and a sealing piece. The diagnosis part is provided with at least one through diagnosis hole, and the sealing piece is clamped between the connecting part and the second connector and blocks the diagnosis hole. The ventilation pipeline and the cylinder head cover are in gas path communication through the connecting module, the first connector is provided with a diagnosis hole, the sealing piece blocks the diagnosis hole in the normal working state, when the connecting position of the first connector and the second connector is disconnected, gas inlet pressure fluctuates, an alarm can be given, OBD diagnosis is completed through the structure of the connecting module, and the diagnosis efficiency is improved. No additional wire harness connection is needed, and the structure of the ventilation system is simplified.

An equalization adaptive water load rapid recovery equipment and operation method, including frame, the inside of the frame is fixed with vertical equipment mounting plate, the inner side is installed by buoyancy chamber support buoyancy chamber, the upper position in buoyancy chamber is installed sliding plate through dynamic sealing ring, the lower position in buoyancy chamber is installed electric push rod, electric push rod is clamped through a pair of clamps, the outside of electric push rod is also covered with spring, the push rod end of electric push rod extends the bottom of buoyancy chamber and is connected with load connector, the bottom of load connector is installed load module, the bottom of buoyancy chamber is installed limit ring, limit ring realizes the limit of load module;Pressure balance valve and electromagnetic valve are installed on the top surface of buoyancy chamber;High-pressure gas cylinder is installed on the equipment mounting plate above buoyancy chamber through gas cylinder support, high-pressure gas cylinder is communicated with electromagnetic valve through No.1 air pipeline, electromagnetic valve is communicated with buoyancy chamber through No.2 air pipeline, recovery is convenient and rapid.

A bladder control system for a two-phase pump loop (TPPL) includes an air compressor, an air line connected to the air compressor, first and second solenoid valves located along the air line, a refrigerant tank having a port operatively connected to the TPPL for selective flow of refrigerant between the refrigerant tank and the TPPL, an expandable bladder located within the refrigerant tank and having a port connected to the air line between the first and second solenoid valves for selective flow of air between the expandable bladder and the air line, and a controller. The controller selectively expands and contracts the expandable bladder to control flow of refrigerant out of the refrigerant tank to the TPPL and into the refrigerant tank from the TPPL for maintaining the system refrigerant pressure within a desired tight range. This is particularly useful for obtaining tight temperature control at the thermal load.

The invention provides a vehicle braking system control method and device, a medium and equipment, and relates to the field of automobiles. The braking system comprises an air compressor, an electric control dryer and an air pipeline. When the first air pressure sensor in the electric control dryer fails, the braking system can obtain the electric signal of the second air pressure sensor arranged in the air pipeline in time, the air pressure condition in the air pipeline is obtained in time, the air compressor is controlled to be started or stopped in time, normal operation of the braking system is maintained, and the service life of the braking system is prolonged. And the driving safety of the vehicle is ensured.

The invention relates to a freight train comprising a plurality of mechanically and electrically coupled wagons; with a main air line that extends through all the cars via couplings between the cars; with brakes connected to the main air line in the or each car, which are designed to brake the respective car depending on an air pressure in the main air line. The freight train according to the invention is characterized by the following features: with at least one electric actuator in one or each car; with a wagon detection device designed to detect the absence of a wagon located adjacent to the respective wagon with the electric actuator; with at least one pneumatic valve connected to the main air line, with which the main air line can be vented; wherein the electric actuator is connected to the at least one pneumatic valve for its actuation, and the electric actuator is connected to the car detection device in order to switch the pneumatic valve for venting the main air line when the absence of the adjacent car is detected.

The utility model discloses a ship bottom monitoring and processing system of cargo hold place of low temperature gas ship relates to ship safety technical field, include: two -phase injection pump, sensor component and ship central controller, two -phase injection pump sets up in the bottom of the hold of cargo hold place, and its drive mouth is connected with the fire fighting sea water pipeline, liquid cargo pipeline and compressed air pipeline of cargo hold place through drive pipeline respectively, the suction port is connected with the sewage well in the cargo hold place, and the discharge port is connected with the outboard discharge pipeline and liquid cargo collection pipeline through the discharge pipeline respectively, sensor component includes liquid level sensor, temperature sensor and flammable medium sensor, and all are electrically connected with ship central controller, the utility model discloses a ship bottom monitoring and processing system of cargo hold place of low temperature gas ship can effectively realize condensate water discharge, residual water emptying and emergency leakage disposal when liquid cargo leakage, has compact structure, function integration higher advantage.

The present application relates to a kind of ramp conveying line based on continuity transport and its working method, belong to the technical field of mechanized conveying of automobile production workshop.It is divided into ground line and air line, on ground line, using the cooperation of fast friction drive, medium-speed friction drive and slow friction drive, make the slow transmission of slide board in manual operation area, facilitate worker operation, fast transmission in unmanned area, speed up transmission efficiency;In climbing section, using the cooperation of fast friction drive and self-adaptive pressure wheel, without using elevator, reduce production rhythm, improve efficiency, ensure the continuity in production process;In air line climbing section, using chain drive, avoid the problem of air carrier back sliding.

The invention relates to a coupling arrangement for establishing a mechanical and a fluid connection between rail-bound vehicles by interaction with a counter-coupling arrangement: a coupling for mechanical connection with a counter-coupling coupling of the counter-coupling arrangement, comprising a coupling lock rotatable about a main axis between a coupled position and an uncoupled position; with an air coupling with a switchable main air valve, with which the flow cross-section of a main air line can be selectively blocked in a closed position and released in an open position, wherein a switching of the main air valve from the closed position to the open position when rotating the coupling closure between the uncoupled and coupled positions is mechanically coupled to the rotation of the coupling closure; a switching of the main air valve from the open position to the closed position is mechanically blocked in the coupled position of the dome closure; A switching of the main air valve from the open position to the closed position is mechanically released in the uncoupled position of the dome closure, and closing optionally occurs via separate control / actuation of the main air valve.

The invention relates to a compressed air supply system (30), in particular for a motor vehicle, having at least the following components: one or more compressed air consumers (34), a compressed air line, an electrically controllable valve, a compressed air control unit (56) for actuating the electrically controllable valve, a compressor or compressor (12) having an electric motor (14) as a drive, and a pressure accumulator (36). The one or more compressed air consumers (32) are or can be pneumatically connected to the compressor or compressor (12) and / or the pressure accumulator (36) via a compressed air line and an electrically controllable valve, such that the compressed air supply system (30) can be operated either in an open operating mode or in a closed operating mode. According to the invention, the compressed air control unit (56) has a current signal input for a current signal which represents a motor current (IB) consumed or to be consumed by an electric motor (14) driving the compressor or compressor (12). The compressed air control unit (56) is designed to actuate the electrically controllable valve according to an open operating mode of the compressed air supply system (30) when a current signal (SIB) is applied to the current signal input (92), said current signal representing an average motor current (IB) whose magnitude is equal to or greater than a predetermined maximum value (Imax) of the motor current.

The utility model relates to the technical field of safety monitoring of drilling equipment, in particular to an automatic auxiliary brake device of a drilling machine. The device comprises a host, and a pressure transmitter, an encoder, an electric control air valve, an electric control pressure regulating valve and a loudspeaker which are connected with the host, wherein the pressure transmitter is arranged in a hydraulic pipeline of a dead line anchor; the encoder is mounted on a rotating shaft on one side of the winch; the electric control air valve and the electric control pressure regulating valve are respectively connected in series to an air path between the main air source and the water brake; the loudspeaker is arranged on the back side of the host. Data are collected through the pressure transmitter, data are processed through the main control board, braking force is controlled through the electric control air valve and the electric control pressure regulating valve, voice prompt is provided through the loudspeaker, a closed-loop automatic control system is formed, and automation and intellectualization of auxiliary braking are achieved. The occurrence of a drilling pause accident is prevented, and the safety of field equipment and workers is ensured.

The invention relates to the technical field of oceanographic engineering geological exploration equipment, in particular to an offshore down-the-hole while-drilling CPT tool which comprises a multi-channel drill rod assembly which comprises a multi-channel drill rod, a cable pipeline, a slurry pipeline, an air pipeline and a standby channel are integrated in the multi-channel drill rod, and the multi-channel drill rod assembly is used for synchronously transmitting electric signals, slurry media and compressed air. The static sounding penetration mechanism and the underground rock breaking and hole sweeping mechanism are integrated, synchronous transmission of power and media is achieved through the multi-channel drill rod, a continuous operation mode of seamless connection of sounding while drilling is constructed, and after a section of stratum penetration test is completed by the tool, the tool does not need to be lifted out of a hole, and the construction efficiency is improved. The pneumatic motor can be immediately started to drive the drill bit to conduct next-section hole sweeping, the traditional intermittent circulation technology of testing, drill lifting, hole sweeping, recycling and descending is changed, and offshore CPT operation is converted into a continuous process from frequent starting and stopping.

The utility model relates to the technical field of engines, in particular to a condensed water measuring device of an engine, which comprises an air inlet pipe and a measuring pipe, the air inlet pipe comprises an air pipeline, an EGR (exhaust gas recirculation) pipeline, a mixer, an air inlet connecting pipe and an air inlet header pipe which are sequentially connected, and a first communicating hole is formed in the bottom of the air inlet connecting pipe in a penetrating manner; a first communicating hole is formed in the side face of the air inlet connecting pipe in a penetrating mode and provided with a first connecting pipe, a second communicating hole is formed in the side face of the air inlet connecting pipe in a penetrating mode and provided with a second connecting pipe, the measuring pipe is made of transparent materials, and the two ends of the measuring pipe are connected with the first connecting pipe and the second connecting pipe in a communicating mode respectively. According to the condensate water measuring device of the engine, the water level of condensate water can be measured without changing the shape and the material of the air inlet pipe, and meanwhile the cost is low.

A black wheel for transporting an ultra-thin silicon wafer may include grooves provided on a side surface of the black wheel along a circumferential direction of the black wheel. Compressed air lines are respectively accommodated within the grooves, and an air outlet of each of the compressed air lines is provided to align with a side of the ultra-thin silicon wafer close to a next process device.