60results about How to "Realize air tightness detection" patented technology

The invention relates to an intelligent alarm device of a respirator. The intelligent alarm device mainly comprises a host machine, a high pressure sensor and a pressure switch, wherein the host machine is internally provided with a single chip microcomputer, a power supply, a button module, an omnibearing vibration sensor, a temperature sensor, an alarm and a liquid crystal display; a high pressure sensor signal circuit, a button module circuit, an alarm drive circuit, a liquid crystal display drive circuit and power circuits are respectively and electrically connected with the single chip microcomputer; and the power circuits comprise a power management control circuit and a power voltage sampling circuit. The intelligent alarm device can display pressure of a cylinder, remaining time of the cylinder and an ambient temperature, and can prompt and alarm when the cylinder is closed by accident. Meanwhile, the intelligent alarm device of the respirator has the functions of self detection and call for help. When accidents occurs, a person to be rescued can call for help by using a manual call-for-help button, and when the person unconscious can not evacuate by himself, an automatic call-for-help program is automatically started to notify workers nearby to rescue immediately.

The invention discloses a tool and method for detecting sealing performance of water stop capsules for bearing platform construction. The tool for detecting sealing performance of water stop capsules for bearing platforms comprises an inner steel sleeve, an outer steel sleeve, an adjusting bolt, an extensible air pipe, an inlet end pressure gauge, an extensible water pipe, and a water inlet end pressure gauge; a space is kept between the inner steel sleeve and the outer steel sleeve; the inner steel sleeve and the outer steel sleeve are connected through the adjusting bolt; the extensible air pipe and the extensible water pipe are both connected to the outer steel sleeve. The detecting method comprises following steps: installing the water stop capsule; detecting the sealing performance of the device; detecting the air-tightness and sealing performance of the water stop capsule; performing eccentric detection. By means of the tool and method, not only sealing performance of water stop capsule with large diameter can be detected, but also the air pressure inside the water stop capsule can be determined and detected in real time as the judgment basis and experience results for sealing effect of the water stop capsule through the air inlet device which is connected to the outer part of the water stop capsule and the water inlet device which is connected to the outer steel sleeve.

The invention discloses an air tightness detection device. The air tightness detection device comprises a detection table, an air source, a pressure sensor, a heater, a controller and a power supply, wherein the detection table is provided with a detection cavity for accommodating a detected part; the air source is communicated with the detection cavity, and is used for supplying detection gas to the detection cavity; the pressure sensor is used for detecting the pressure in the detection cavity; the heater is arranged on the detection table, and is used for heating the gas in the detection cavity; the controller is connected with the heater and the pressure sensor respectively, and is used for controlling the heater and receiving a pressure feedback signal of the pressure sensor; the power supply is connected with the heater and the controller respectively in order to supply power to the heater and the controller. By adopting the air tightness detection device according to the embodiment of the invention, air tightness detection at a normal temperature can be realized, and air tightness detection at a high temperature can be realized; the air tightness detection device has the advantages of wide application range, high practicability and the like.

The invention provides an automatic packaging detection line for a fuel cell membrane electrode. The automatic packaging detection line comprises: a frame membrane cutting device for cutting a cathodeframe membrane and an anode frame membrane; a CCM cutting device used for cutting the CCM; a five-in-one hot pressing device used for superposing the cathode and anode frame membranes on two sides ofthe CCM and performing vacuum hot pressing; an identification and detection device; a gas diffusion layer cutting device used for cutting a cathode gas diffusion layer and an anode gas diffusion layer; a seven-in-one hot-pressing device used for stacking the cathode gas diffusion layer and the anode gas diffusion layer on two sides of the five-layer membrane electrode and performing hot pressing;a membrane electrode forming cutting and visual inspection device used for cutting the seven-layer membrane electrode to form a membrane electrode finished product and carrying out visual inspection;and a membrane electrode air tightness detection device used for carrying out air tightness detection on the membrane electrode. Automatic packaging and detection of the fuel cell membrane electrodecan be realized, the labor cost is saved, the production efficiency can be improved, and the product quality and the process consistency are improved.

The invention relates to the technical field of vehicle safety, in particular to an airtightness detection device and detection method of a valve opening. The airtightness detection device comprises an air source, a low pressure air inlet valve, an air inlet sealing cavity, an exhaust sealing cavity, a first low pressure measurement valve, a flowmeter, a low pressure exhaust valve, a controller and a first driving mechanism which is used for driving a valve rod of a normally open valve to move; the air source, the low pressure air inlet valve and an air inlet of the air inlet sealing cavity are communicated with one another in sequence; an air outlet of the exhaust sealing cavity is communicated with the first low pressure measurement valve, the flowmeter and the low pressure exhaust valvein sequence; the exhaust sealing cavity is formed above the air inlet sealing cavity, the normally open valve is arranged inside the exhaust sealing cavity, and an inlet of a valve base of the normally open valve is communicated with an air outlet of the air inlet sealing cavity; an outlet of a valve body of the normally open valve is communicated with the exhaust sealing cavity. The airtightnessdetection device solves the technical problems that airtightness detection of a valve opening of an existing normally open valve is not mature, and the airtightness of the valve opening of the normally open valve cannot be well detected.

The invention discloses an air tightness detecting device for an engine cylinder head and a detecting method of the air tightness detecting device. The air tightness detecting device includes a conveying roller bed and a pressurizing device, the conveying roller bed includes a conveying frame and conveying rollers, and the conveying rollers are installed parallel to each other at intervals on theconveying frame. According to the air tightness detecting device for the engine cylinder head and the detecting method of the air tightness detecting device, through use of the conveying rollers, automatic conveying of the engine cylinder head can be realized, clamping and positioning of a blocking plate are realized through the action of a locking cylinder and a locking head arranged on the conveying frame, and meanwhile, the height of the blocking plate can be adjusted through a lifting cylinder; and when a to-be-tested engine cylinder head is conveyed to the blocking plate at the locking cylinder under the action of the conveying rollers, the requirements of sealing and air intake can be met through an air inlet and a plug on the blocking plate, locking of the engine cylinder head can be realized through a compressing plate on an installation frame, and air tightness detection of the engine cylinder head is realized through air-entrapping of an air pump.

The invention relates to a fuel pipe sealing performance detection mechanism. The fuel pipe sealing performance detection mechanism comprises a workbench and a mounting plate which is fixed on the workbench and is vertical to the workbench; two groups of clamping mechanisms used for clamping the two ends of a fuel pipe, wherein the clamping mechanisms are mounted on the workbench; two cylindrical pipes oppositely arranged, wherein one ends of the cylindrical pipes are communicated with the pressurizing assembly, the other ends of the cylindrical pipes are fixedly provided with conical connecting pipes communicated with the inner sides of the cylindrical pipes, pressing structures are installed on the cylindrical pipes in a sliding mode, the pressing structures are rotationally connected with second gears through transmission assemblies, the second gears are rotationally installed on bearing plates fixed to the cylindrical pipes, and the second gear is matched with a rack plate fixed to the workbench; and a driving assembly installed on the workbench, connected with the two cylindrical pipes and used for driving the two cylindrical pipes to move in the opposite directions or in the opposite directions.

The invention relates to an air tightness detector for a photoelectric instrument. The air tightness detector comprises a nitrogen on-line quality analysis module, a first air inflation channel, a second air inflation channel and a single-chip microcomputer control circuit, wherein the nitrogen on-line quality analysis module is formed by connecting a dew-point meter, a nitrogen purity analysis meter and a digital type pressure meter; the first air inflation channel is formed by connecting a first precise pressure reducing valve, a first magnetic valve and a first digital type pressure switch; the second air inflation channel is formed by connecting a second precise pressure reducing valve, a second magnetic valve and a second digital type pressure switch; the single-chip microcomputer control circuit is connected with each component, and the air quality of an input air source and the air inflation time, air inflation pressure and other indexes of the air inflation of the photoelectric instrument are monitored in real time. The air tightness detector for the photoelectric instrument disclosed by the invention is suitable for the air tightness detection of inner cavities of various precise photoelectric instruments, and can be widely used for the air tightness detection of newly developed or repaired photoelectric instruments in a photoelectric instrument development organization or repair factory.

The invention relates to the technical field of automobile safety, in particular to an air tightness detection device and method. The device comprises an air source, a low-pressure air inlet valve, anair inlet sealing cavity, an air discharge sealing cavity, a first low-pressure measurement valve, a flowmeter, a low-pressure air discharge valve, a controller and a first driving mechanism; the airsource, the low-pressure air inlet valve and an air inlet of the air inlet sealing cavity are communicated in sequence; an air outlet of the air discharge sealing cavity is communicated with the first low-pressure measurement valve, the flowmeter and the low-pressure air discharge valve in sequence; the air discharge sealing cavity is formed below the air inlet sealing cavity, a partial structureof a normally-closed valve is arranged in the air inlet sealing cavity, and an inlet of a valve base of the normally-closed valve is communicated with the air inlet sealing cavity; an outlet of the valve base of the normally-closed valve can be communicated with the air discharge sealing cavity, and the outlet of the valve base can be closed through moving iron. By means of the air tightness detection device, the technical problem is solved that whole air tightness detection of an existing normally-closed valve is immature, and the air tightness of the normally-closed valve can be well detected.

The invention discloses a detection device for a heating apparatus. The detection device comprises a base, a conveying mechanism and a detection stand, wherein a bottom portion of an upper mounting plate of the detection stand is provided with a lower coupler seat and a current signal detector, the detection stand is internally fixed with a mounting seat, the mounting seat is provided with a mounted bearing, a turning rack is connected with the mounted bearing and a servo motor through a rotation shaft, the turning rack is provided with a lifting mechanism, the lifting mechanism is provided with a detection bench, the turning rack is internally provided with a dual-stroke cylinder used for driving the lifting mechanism to move up and down, the dual-stroke cylinder is fixed at the middle ofthe turning rack through a supporting rod, and the dual-stroke cylinder is provided with a tapered push rod. The detection device is advantaged in that aiming at problems, the servo motor is utilizedto realize turning of the turning rack up and down, an electric kettle is clamped by clamping plates in the detection bench, the electric kettle is turned to the upper portion to match with a couplerto realize on-off detection, and detection efficiency of the electric kettle is greatly improved.

The invention discloses railway vehicle raining and vehicle washing integrated platform equipment. The equipment is arranged in a vehicle body workshop and comprises raining equipment and a vehicle washing platform, the raining equipment comprises a controller, guide rails arranged on the two sides of a vehicle to be rained and a portal frame which is arranged on the guide rails and can reciprocate along the guide rails, and the controller is connected with the portal frame. A spraying device is arranged on the portal frame, and the portal frame and the spraying device are electrically connected with the controller; and the vehicle washing platform comprises a supporting plate arranged on the inner side of the guide rails. The equipment not only can meet the requirement of a rail vehicle rain test and avoid interference between a vehicle body rain test and a debugging vehicle rain test, but also can meet the requirement of vehicle washing, meanwhile, the water resource cost can be effectively reduced, and the working efficiency of operating personnel is improved.

A multi-station filter leak detection device, the main body includes a base, a box is installed on the rear side of the base, an open groove is arranged on the base, and multiple groups of concave openings with upward openings are arranged inside the open groove The groove, the two sides of the concave groove are provided with a horizontal limit cylinder, and the end of the horizontal limit cylinder is provided with a horizontal clip, the top of the open groove is provided with a positioning plate, and a vertical cylinder passing through the positioning plate is installed on the positioning plate. A top clip is installed at the end of the vertical cylinder, and a partition is installed in the middle of the box. On the partition, there is an inverted water injection cylinder that passes through the partition from top to bottom. A floating block is installed at the end of the water injection cylinder. There is a passageway between the box and the box, and the inside of the box is filled with clean water. The beneficial effects of the present invention are: the airtightness detection of the filter can be realized through the in-water test with clear water, and the detection effect is obvious, the operation is convenient, the energy is saved and the consumption is reduced, and it is convenient for actual use and large-scale promotion.

The ship accessory machining platform comprises a machining table, a base, an extending table, a sliding groove, a sliding seat, a first air cylinder and a controller, the sliding seat comprises a supporting seat and a rotating shaft, a first motor is arranged on one side edge of the supporting seat, and the upper portion of the rotating shaft is connected with the bottom of the machining table through a connecting seat; a sliding block is arranged on the other side of the support and slidably connected with the sliding seat, a piston rod of the first air cylinder extends into the sliding seat and then is fixedly connected with the sliding block, one or more ventilation pipes and an air connecting head are arranged in the machining table, a plurality of first ventilation holes are formed in the ventilation pipes, and all the ventilation pipes are connected with a ventilation main pipe. An air inlet pipe, an air outlet pipe and a detection air pipe are arranged on the side edge of the machining table, a circle of sealing groove and an installation base are further arranged on the table top of the machining table, a second air cylinder is fixed to the installation base, an air tightness detection cover is connected to the second air cylinder, and a sealing rubber strip is arranged below the air tightness detection cover. The angle of the machining table can be adjusted.

The invention belongs to the technical field of ships, and discloses a front guide wheel and a front guide wheel mounting method. According to the front guide wheel, the two ends of a first blade are connected to the inner wall of a first guide pipe and the outer wall of a tail shaft pipe respectively, a first inner circumferential rib plate is arranged on the outer wall of the first guide pipe in a protruding mode, a first cover plate is arranged on the first inner circumferential rib plate, a first detection cavity is formed between the first guide pipe and the first cover plate, and a first sealing plug is used for sealing detection of the first detection cavity; a second guide wheel comprises a second guide pipe, a second blade and a second cover plate, the two ends of the second blade are connected to the inner wall of the second guide pipe and the outer wall of the tail shaft pipe respectively, the first guide pipe is connected with the second guide pipe, a second inner circumferential rib plate is arranged on the outer wall of the second guide pipe in a protruding mode, the second cover plate is arranged on the second inner circumferential rib plate, a second detection cavity is formed between the second guide pipe and the second cover plate, and a second sealing plug is used for sealing detection of the second detection cavity. The front guide wheel is convenient to mount and dismount and good in air tightness.

The invention relates to a device for detecting the sealing performance of an airbag tank, which is composed of a compression bolt (1), a rotating nut (2), a fixed frame (3), a compression block (4), an airbag tank (5), a compression rubber gasket (6), a fixed base (7) and an air inflation rod (8), wherein the upper surface and the lower surface of the fixed frame (3) are provided with through holes which are coaxial with each other; the bottom part of the fixed frame (3) is provided with the fixed base (7), the fixed base (7) is provided with the compression rubber gasket (6) thereon, and the airbag tank (5) is arranged on the compression rubber gasket (6). The device is characterized in that the upper part of the airbag tank (5) is provided with the compression block (4), the airbag tank (5) is internally provided with the air inflation rod (8), and the air gets into an inner cavity of the airbag tank (5) through the air inflation rod (8). The device provided by the invention can carry out general detection on bayonets with the sizes being 102.5, 132.5, 152.5 and 199.7 and carry out synchronous detection on a circumferential welding seam and a welding seam at a screw thread, thereby reducing the labor intensity of workers, improving the production efficiency and improving the product quality.

The invention provides an oil-filled motor, belonging to the technical field of motor equipment. The oil-filled motor solves the problems that a hole needs to be formed in an upper cap and the operation is tedious when the existing oil-filled motor is subjected to airtightness detection. The oil-filled motor comprises a motor cylinder, an upper bearing pedestal and an upper cap, wherein the upper bearing pedestal is fixed connected to the end part of the motor cylinder, the upper cap is fixed connected on the upper bearing pedestal, a detection hole is formed on the upper bearing pedestal, an outgoing wire sheath is fixedly inserted in the detection hole, a wire passing hole is formed in the outgoing wire sheath along the axial direction, one end of the outgoing wire sheath extends into an oil cavity, a limiting part is arranged on the outer circumferential wall of the end extending into the oil cavity, and the end, extending into the oil cavity, of the outgoing wire sheath is further provided with a leading-in structure which can guide a gas in the oil cavity to extrude the outgoing wire sheath and passes through a space between the outer circumferential wall of the outgoing wire sheath and the hole wall of the detection hole. When the oil-filled motor provided by the invention is subjected to airtightness detection, the hole does not need be formed in the upper cap, and the airtightness of the gas cavity and the oil cavity can be detected simulatenously in a single test.

The invention discloses a crustless heat exchanger pipe end air-tightness test device and method, and relates to the field of the heat exchanger manufacturing. Pipe sheets integrated with the pipe bundle are arranged at two ends of the crustless heat exchanger pipe end air-tightness test device; the crustless heat exchanger pipe end air-tightness test device comprises pressing plates and a pressing device; the pressing plate is clung to the upper surface of each pipe sheet by the pressing device; a sealing ring is arranged between the pressing plate and the pipe sheet, and a closed cavity is formed by the pressing plate, a heat exchange pipe and the pipe sheets. The air-tightness test method comprises the following steps: one, preparation before test, and two, air-tightness test. The device disclosed by the invention is convenient for operation, and the method is accurate in leak detection.

The invention relates to the technical field of aircraft camouflage devices, in particular to an ultra-large span inflatable aircraft camouflage device operation and maintenance system which comprises a hangar body, a weather detection device is arranged at the top end of the hangar body, a camouflage skin is arranged on the surface of the hangar body, and a first fixing component is arranged at the bottom end of the hangar body. Sandbags are uniformly arranged on one sides of the first fixing parts, and laser range finders are arranged on the surfaces of the sandbags; and the second fixing part is mounted on the surface of the other end of the hangar body. According to the invention, advanced and innovative designs such as a multi-redundancy breakage-proof design, a fuzzy neural network PID algorithm-based intelligent pressure control design, an integrated stealth design, a rapid inflation and precise air supply flow control design and the like are adopted; the inflatable aircraft camouflage device operation and maintenance system has the advantages of being good in damage resistance, high in control precision, small in operation energy consumption, high in inflation efficiency, good in stealth performance and the like.

The invention provides a device for detecting the air tightness of intravenous drip buckets in a batch manner. The device comprises a base and a detecting group, wherein the detecting group is arranged on the base; a control box which is electrically connected with the detecting group is arranged beside the detecting group; the detecting group comprises multiple same detecting tools which are arrayed in parallel; the detecting tools comprise brackets and multiple fixing blocks which are arranged on the brackets; the fixing blocks jointly act through a first sliding mechanism and a second sliding mechanism; multiple hollow locating columns which are uniformly distributed and cooperate with the fixing blocks are fixedly arranged on the base. According to the device for detecting the air tightness of the intravenous drip buckets in the batch manner, which is provided by the invention, through realizing the detection of the air tightness of multiple intravenous drip buckets once and further displaying pressure differences respectively, the detection of the flow characteristics of large-batch intravenous drip buckets is realized; the detection efficiency is obviously improved; the device meets the use demand of a present larger intravenous drip bucket; the time is saved; further, the detection cost is obviously decreased.

The invention discloses the part crack detecting or sand hole field, and in particular relates to an automatic leak detecting device in order to overcome a defect that a conventional leak detecting device is poor in universality and cannot measure the leakage degree of parts. The invention provides an automatic leak detecting device which comprises a base, a frame, a hood, a control cabinet, a man-machine interface, and a device mechanical body. The man-machine interface is located on the right side of the hood, and comprises an absolute differential pressure sensor, a differential pressure sensor, a temperature sensor, an input keyboard, a printer, a display device, and a MODBUS communication device. The frame is disposed in the hood and is used for supporting the device mechanical body. The device mechanical body comprises a support platform, a clamp, a horizontal sealing device, a vertical sealing device, and an air inflow detecting device. The automatic leak detecting device can be used for detecting the leaks of different parts, provides efficiency, saves cost, and achieves quantitative data collection and remote data transmission.

The invention relates to an airtightness detection method and system for a fixture of a filling machine. The system comprises a base and a bracket fixed on the base, the base is provided with an installation groove matched with the fixture in size, the bracket is provided with an airtightness detection device, a pressure regulation mechanism and a vacuum generation device, the airtightness detection device comprises a cylinder, an elastic air faucet connected with a piston end of the cylinder, and a control mechanism used for controlling the movement of the cylinder, the elastic air faucet is arranged opposite to an air faucet of the fixture, and the pressure regulation mechanism, the vacuum generation device and the airtightness detection device are mutually communicated through a tee joint and a pipeline. The airtightness detection device, the pressure regulation device and the vacuum generation device fixed on the base and the bracket achieve the airtightness detection of the fixture, air leakage in the detection process of the fixture is avoided, and the production efficiency of a battery is remarkably improved.

The invention discloses a double-station air tightness detecting device and method applied to a top cover of a lithium power battery. The double-station air tightness detecting device applied to the top cover of the lithium power battery is provided with a driving piece, a connecting piece, a transmission piece, a control piece and a sealing piece; the control piece is provided with a safety optical grating, a proportional valve group and a two-position five-way solenoid valve group; the sealing piece is provided with a lower cavity and an upper cavity; a first pressure sensing device, a second pressure sensing device, a third pressure sensing device and a fourth pressure sensing device are arranged in front of the lower cavity; according to the double-station air tightness detecting device, the pressure values of various sealing areas are automatically monitored through the pressure sensing devices so as to detect the air tightness of the top cover of the lithium power battery; a leakage area of the top cover of the lithium power battery with poor air tightness can be found automatically; the production process of the top cover of the lithium power battery is further improved; theleakage position of the top cover of the lithium power battery can be found automatically; the determination result is accurate; and the traceability is good.

The invention discloses an air-tightness detector. The detector comprises a cylinder, a base plate for sealing a catalytic cleaner is arranged at one end of a piston rod of the cylinder, a gas transmission structure for transmitting gas provided by an aerator into the catalytic cleaner is arranged on the base plate, and the detector further comprises a pressure gauge for detecting the pressure change inside the catalytic cleaner after aeration. The air-tightness detector is small in size, simple in operation, convenient to move and capable of detecting the air-tightness of various automobile exhaust catalytic cleaners.

The invention discloses a detection device based on pre-drying of heating instruments, which comprises a base, a conveying mechanism and a detection bench. A drying component is arranged on the conveying mechanism. The drying component includes an outer frame, an inner frame and a spray chamber formed by the two frames. The conveying belt of the conveying mechanism is located in the inner frame, and the inner frame is fixed to the outer frame by installation support legs. An air blower is arranged on the outer frame. The outer frame is provided with an air vent. A nozzle is arranged on the upper bottom plate of the inner frame, and liquid outlets are formed in the lower bottom plate. The objective of the invention is to provide a detection device based on pre-drying of heating instrumentsin view of the problem above. After the boiling water temperature of an electric kettle is detected, the electric kettle is dried through the drying component, a turning frame is turned up and down bya servo motor, a clamping plate in the detection bench clamps the electric kettle and turns the electric kettle upwards, and the device and a coupler complete on-off detection together. Therefore, the detection efficiency of electric kettles is greatly improved.

The invention discloses a leakproof device of a connecting part. The leakproof device comprises the connecting part and further comprises a leakproof shell arranged on the periphery of the connecting part in a seal manner, a closed cavity is arranged between the leakproof shell and the connecting part, and the leakproof shell at least comprises a soft shell portion; when the connecting part leaks, the soft shell portion shows visually-checked shape changes. According to the leakproof device of the connecting part, a pipeline for conveying gas can be effectively prevented from leaking towards the exterior, production process safety is improved, and production and running stability is ensured. In addition, through observing of the appearance shape of the leakproof device of the connecting part, whether medium leakage happens to the device or not can be rapidly, conveniently and rapidly judged, a certain specific gas leakage point can be determined, and the judgment process saves time and labor. In addition, the leakproof device of the connection part is simple in structure and suitable for modification of various gas conveying pipelines in a production line.

The invention relates to an air tightness detector for a photoelectric instrument. The air tightness detector comprises a nitrogen on-line quality analysis module, a first air inflation channel, a second air inflation channel and a single-chip microcomputer control circuit, wherein the nitrogen on-line quality analysis module is formed by connecting a dew-point meter, a nitrogen purity analysis meter and a digital type pressure meter; the first air inflation channel is formed by connecting a first precise pressure reducing valve, a first magnetic valve and a first digital type pressure switch; the second air inflation channel is formed by connecting a second precise pressure reducing valve, a second magnetic valve and a second digital type pressure switch; the single-chip microcomputer control circuit is connected with each component, and the air quality of an input air source and the air inflation time, air inflation pressure and other indexes of the air inflation of the photoelectric instrument are monitored in real time. The air tightness detector for the photoelectric instrument disclosed by the invention is suitable for the air tightness detection of inner cavities of various precise photoelectric instruments, and can be widely used for the air tightness detection of newly developed or repaired photoelectric instruments in a photoelectric instrument development organization or repair factory.

The invention provides an external expansion type sealing detection device, and belongs to the technical field of medical detection equipment. The inner core with one end extending out of the shell is arranged in the sliding cavity of the shell in a sliding mode, the two sealing rings abutting against the cavity wall of the sliding cavity are arranged on the inner core in a spaced mode, and the end, extending out of the shell, of the inner core is sleeved with the elastic piston ring with one end abutting against the shell and pressed through the pressing head. The inner core is provided with an air inflation hole communicated with the interval between the two sealing rings and a detection hole which extends out of the pressure head and is provided with a detection head, so that the elastic piston ring can be extruded to deform when the inner core moves, the opening of the to-be-detected part is sealed, air inflation is performed through the detection hole, and the pressure change is detected through the detection head, thereby judging whether the air tightness is good or not. One-time operation is achieved, use is convenient, the leakage problem caused by the fact that the inflation structure is drawn out after inflation and then the detection structure is inserted is effectively prevented, the detection accuracy and reliability are improved, and it is ensured that medical equipment using the part can safely run in the later period.

The invention discloses a blending pump anti-splashing device for aviation fuel preparation, and relates to the technical field of aviation fuel preparation, the blending pump anti-splashing device comprises an anti-splashing mask body and an anti-poison assembly, a round hole is formed in the outer wall of one side of the anti-splashing mask body, and an annular seat is fixedly connected to the position, close to the round hole, of the outer wall of one side of the anti-splashing mask body; the anti-poison assembly comprises a connecting cylinder, a threaded groove is formed in the arc-shaped inner wall of the annular base, a threaded protrusion matched with the threaded groove is arranged on the arc-shaped outer wall of the connecting cylinder, mounting holes are formed in the outer wall of one side of the splash-proof mask body and located on the two sides of the round hole, and sealing assemblies are slidably connected to the arc-shaped inner walls of the two mounting holes. The anti-poison assembly can be disassembled by rotating the connecting cylinder, then a new anti-poison assembly is installed on the splash-proof mask body through the threaded protrusion on the connecting cylinder and the threaded groove in the annular base, and rapid disassembly and assembly of the anti-poison assembly are achieved.

The invention provides an oil-filled motor, belonging to the technical field of motor equipment. The oil-filled motor solves the problems that a hole needs to be formed in an upper cap and the operation is tedious when the existing oil-filled motor is subjected to airtightness detection. The oil-filled motor comprises a motor cylinder, an upper bearing pedestal and an upper cap, wherein the upper bearing pedestal is fixed connected to the end part of the motor cylinder, the upper cap is fixed connected on the upper bearing pedestal, a detection hole is formed on the upper bearing pedestal, an outgoing wire sheath is fixedly inserted in the detection hole, a wire passing hole is formed in the outgoing wire sheath along the axial direction, one end of the outgoing wire sheath extends into an oil cavity, a limiting part is arranged on the outer circumferential wall of the end extending into the oil cavity, and the end, extending into the oil cavity, of the outgoing wire sheath is further provided with a leading-in structure which can guide a gas in the oil cavity to extrude the outgoing wire sheath and passes through a space between the outer circumferential wall of the outgoing wire sheath and the hole wall of the detection hole. When the oil-filled motor provided by the invention is subjected to airtightness detection, the hole does not need be formed in the upper cap, and the airtightness of the gas cavity and the oil cavity can be detected simulatenously in a single test.

The invention discloses an air tightness detection device for a quartz crystal resonator. The air tightness detection device comprises a mounting table, an air outlet cylinder, an air outlet cylinderbracket, a striker fixing plate, a reset spring, a pushing mechanism, a feeding mechanism and a detection mechanism. The mounting table is mainly used for bearing all structures of the detection device, the pushing structure pushes the air blowing cavity inserted into the air pipe of the air blower forwards, the feeding mechanism rotates the to-be-detected quartz crystal resonator placed in the clamp to the same horizontal height as the air blowing cavity, at the moment, the air blowing cavity, the clamp and the air outlet cylinder are tightly connected, and the air blower blows air through the air blowing cavity. And if the air tightness is poor, the air enters the air outlet barrel, so that the display lamp in the detection mechanism is lightened, and if the air tightness is good, the air cannot enter the air outlet barrel, and the display lamp cannot be lightened.