51results about How to "Guarantee a tight seal" patented technology

The invention discloses a device and a method for detecting the sealing quality and gas-leakage position of a coal seam gas extraction drill-hole. The device for detecting the sealing quality and gas-leakage position of a coal seam gas extraction drill-hole comprises a quick-connect tee, a detection tube and a gas analyzer, wherein the quick-connect tee is provided with three connecting ports, the gas analyzer is connected with the detection tube, and the quick-connect tee is also provided with a sampling measuring port. The method for detecting the sealing quality and gas-leakage position of a coal seam gas extraction drill-hole is implemented through carrying out detection on different measuring points by using the device for detecting the sealing quality and gas-leakage position of a coal seam gas extraction drill-hole so as to judge the gas-leakage position. According to the invention, through detecting the gas concentrations and extraction negative pressures and the like of positions at different depths in an extraction drill-hole in a detecting negative pressure state, and analyzing the migration rule of gas in the extraction drill-hole, the sealing quality and gas-leakage position of the extraction drill-hole are determined.

The invention discloses an automatic assembling robot for a battery cover plate drain hole plug. The automatic assembling robot comprises a machine frame. According to the technical scheme of the automatic assembling robot, a bottom sliding rail is arranged on the machine frame; a cover plate clamping mechanism used for driving a battery cover plate to move transversely is erected on the bottom sliding rail; an automatic taking and placing mechanism used for automatically taking the drain hole plug out of an injection hole of the battery cover plate and placing the drain hole plug into the injection hole is arranged on the machine frame and located above the cover plate clamping mechanism; the machine frame is further provided with an automatic screwing mechanism used for ejecting the drain hole plug and screwing the drain hole plug into the injection hole. By the adoption of the automatic assembling robot for the battery cover plate drain hole plug, the drain hole plug can be automatically grabbed and placed into the injection hole, and the drain hole plug can be screwed according to designed torque requirements; manual work is replaced, the operation quality is guaranteed, the efficiency is improved, and the cost is reduced.

The invention discloses an ultrasonic-assisted underwater wet welding method which is characterized in that an ultrasonic transducer is sealed in a waterproof shell, the shell is filled with aviation kerosene, the upper end of an ultrasonic amplitude transformer penetrates the waterproof shell and is connected with the lower end of the ultrasonic transducer in a threaded manner, an insulating sleeve penetrates the waterproof shell, is inserted into the waterproof shell from the upper end of the ultrasonic transducer and penetrates the ultrasonic amplitude transformer to reach the lower end face of the amplitude transformer, a conducting rod and a conducting nozzle are mounted in the insulating sleeve, the conducting nozzle is mounted at the lower end of the insulating sleeve and partially extends out of the ultrasonic amplitude transformer, the upper end of the conducting rod extends out of the shell and the insulating sleeve, the lower end of the conducting rod is connected with the conducting nozzle in a threaded manner, the conducting rod and the conducting nozzle are axially provided with welding wire feeding pipes, an ultrasonic power wire penetrates the waterproof shell and is connected with the ultrasonic transducer, a lifting adjustment mechanism is arranged on the conducting rod, and the conducting rod is connected with an underwater welding power supply. Arc blow and arc extinguishing rate is decreased, welding joints are uniformly formed, welding defects are decreased, and the ultrasonic-assisted underwater wet welding method has a quite large application space in the field of underwater welding.

An atmospheric glow-discharge plasma reactor with rotary spiral electrode for preparing C2 hydrocarbon from methane features that its rotary spiral electrode is made up by fixing the spiral metallic band with toothed edge to a cylindrical metal column, and the electrically insulated top end of said electrode is linked to sealing unit. Its advantages are high uniformity of plasma distribution and high reaction efficiency.

The invention provides a disposable endoscope sheath with a telescopic endoscope bridge. The disposable endoscope sheath comprises an endoscope cavity in the sheath, a sheath main body and the telescopic endoscope bridge. The rear end of the endoscope cavity is communicated with the sheath main body and the telescopic endoscope bridge; the telescopic endoscope bridge comprises a sheath main body connecting part, a sealing ring, a check ring and a limiting sleeve; the sheath main body connecting part is connected with the sheath main body; the front end of the telescopic endoscope bridge is provided with the sealing ring and the check ring in turn; the telescopic endoscope bridge is connected and communicated with the sheath main body connecting part and the sheath main body; the limiting sleeve is arranged at the rear end of the check ring and is fixedly connected with the sheath main body connecting part; the tail end of the telescopic endoscope bridge is provided with an endoscope locking device. The disposable endoscope sheath has the advantages that: the telescopic endoscope bridge can ensure that the length of an endoscope can be convenient to adjust according to different working lengths of endoscopes when the endoscope is arranged in the sheath; in addition, the endoscope only can be arranged in the sheath for one time and locked by the endoscope locking device, and theendoscope sheath is not repeatedly used.

A method for producing a spindle drive for an adjustable element of a vehicle, wherein the spindle drive has a substantially tubular spindle drive housing and two connections for diverting driving movements, wherein at least one connection of the spindle drive has a connection head which is connected to the spindle drive via a connection neck which is thinner than the connection head. A sealing cap for the spindle drive housing is provided with a sealing opening, in order to install the sealing cap, the sealing cap is pulled with the sealing opening thereof over the connection head of a connection of the spindle drive, and the peripheral region of the sealing opening is elastically deformed by the engagement with the connection head and is therefore widened, and that the peripheral region of the sealing opening is subsequently deformed back elastically in frictionally sealing engagement with the connection neck.

The invention relates to a filling plug screwing and heat sealing integrated machine. The filling plug screwing and heat sealing integrated machine comprises a rack, an automatic picking, placing andscrewing assembly, a cover plate clamping mechanism, an automatic cover plate transfer mechanism and an automatic picking, placing and heat sealing assembly, wherein the automatic picking, placing andscrewing assembly is arranged on the rack and used for automatically sucking a filling plug, placing the filling plug at a filling hole of a battery cover plate and screwing the well placed filling plug into the filling hole; the cover plate clamping mechanism is arranged on the rack and used for clamping and fixing the battery cover plate; the automatic cover plate transfer mechanism is arrangedon the rack and can take out the battery cover plate finishing filling plug screwing work on a filling plug moving worktable and place the battery cover plate on the cover plate clamping mechanism; the automatic picking, placing and heat sealing assembly is arranged on the rack and used for sucking a gas filter sheet, placing the gas filter sheet at a gas filter hole of the battery cover plate and heat-sealing the well placed gas filter sheet into the gas filter hole. The filling plug screwing and heat sealing integrated machine can automatically grab the filling plug, place the filling pluginto the filling hole and tightly screw the filling plug, can perform a gas filter sheet heat-sealing work immediately after finishing the filling plug screwing work, automatically suck the gas filtersheet, place the gas filter sheet into the gas filter hole and perform automatic heat sealing on the gas filter sheet, and work continuity is guaranteed by the integrated machine.

The invention discloses an internal sealed buckle-assembled non-welded combined cover and an interface for infusion, belonging to the technical field of medicine packaging. The combined cover comprises an outer cover and a rubber plug, wherein the outer cover is composed of a cover body and an easy-to-be-broken handle; the interface is composed of a cylindrical tubular opening pipe and a connector which is integrated with the pipe; the easy-to-be-broken handle is arranged at the top of the cover body; the rubber plug is arranged inside a rubber plug cavity of the cover body; a seal ring I, which is protruded downwards, is arranged at the top of the interior of the rubber plug cavity; a seal buckle groove is arranged on the lower part of the inner circumference of the rubber plug cavity; on the outer side of a spherical pit, the upper surface and the lower surface of the rubber plug are respectively provided with a seal ring II and a second seal ring III; the top end of the cylindrical tubular opening pipe of the interface is blocked by virtue of an internal sealed compartment so as to form a sealed end; a seal ring IV, which is protruded upwards, is arranged on the upper surface of the internal sealed compartment; a seal buckle ring is arranged on the upper part of the outer circumference of the cylindrical tubular opening pipe; the seal ring I is matched with the seal ring II; the seal ring III is matched with the seal ring IV; and the seal buckle ring is matched with the seal buckle groove. By virtue of the combined cover and the interface disclosed by the invention, the sealing property and the safety of use can be completed and guaranteed.

The invention discloses a high-low temperature alternating pure metal two-way sealing ball valve. The high-low temperature alternating pure metal two-way sealing ball valve comprises a valve body provided with a valve cavity, and a ball body located in the valve cavity and in sealing fit with the valve cavity through a valve seat sealing pair, the top of the ball body is connected with a valve rod, and the valve seat sealing pair comprises an annular valve seat; a plurality of shaft shoulders are arranged on the outer circumferential wall of the valve seat, and the side, close to the ball body, on the inner wall of the valve seat is tangent to the ball body; and a flowing channel transits onto the valve cavity through N-stages step holes, the N shaft shoulder is inserted into an Nhole body, a spring compensation type metal sealing ring A is arranged between the N shaft shoulder and the N hole body, and the spring compensation type metal sealing ring A is at least in apressed state in the direction parallel to the axis of the flowing channel. According to the high-low temperature alternating pure metal two-way sealing ball valve, floating sealing is achieved through the sealing ring with an elastic compensation function, size compensation required by temperature change is met, whether the high temperature, the low temperature or high-low temperature alternating, high-temperature expansion deformation and low-temperature shrinkage deformation are overcome, and tight sealing of the ball valve in various changing work conditions can be effectively ensured.

The invention discloses a special densifying ring for a medical protective mask. The special densifying ring comprises a cloth body, a nose bridge rib is arranged in an inner cavity of the cloth body,cheek ribs are symmetrically embedded into the two sides of the cloth body, splayed ribs are further fixedly embedded into the cloth body, an extension strip is embedded into the lower end of the cloth body, and a jaw rib is embedded into the extension strip. The nose bridge rib can ensure the pressing and sealing of the nose bridge position; the cheek ribs can wrap and press cheeks according todifferent cheekbones, the splayed ribs can shape the two sides of the nose tip and prevent the two sides of the nose tip from being blown up by airflow during breathing, and the jaw ribs can bend to wrap the jaw, press the lower end of the mask, prevent the mouth from being blown up and blow up the mask at the lower end to form a large gap.

The invention discloses a multi-airbag mechanical hand. The multi-airbag mechanical hand comprises a drive rod and multiple airbags. The drive rod is used for driving the mechanical hand to take and put a target. The multiple airbags are used for clamping the target in the taking and putting work of the mechanical hand, the shape of each of the multiple airbags is changed through an airbag space arranged in the airbag to adapt to the shape of the target to achieve clamping, and the multiple airbags are connected with the drive rod in the manner that the outer wall of the drive rod is wrapped by the respective airbag spaces of the airbags correspondingly. The invention further discloses mechanical equipment with the multi-airbag mechanical hand. The shape of the multi-airbag mechanical handis easily adjusted to be matched with the target, the grabbing range is wide, and the applicability is high; the multi-airbag mechanical hand has very good flexibility, bumps and other damage to thetarget can be avoided, and the safety of the target is effectively guaranteed; and in addition, the multi-airbag mechanical hand is simple in structure and low in manufacturing cost.

The invention discloses a constant-capacity combustion pressure testing device for a micro-nano energetic material, the constant-capacity combustion pressure testing device is used for testing the combustion performance of a small-quantity micro-nano energetic material, the constant-capacity combustion pressure testing device includes a micro-closed bomb vessel, a nut igniter, the micro-nano energetic material and a piezoelectric sensor, the nut igniter is fixedly connected with a micro-closed bomb vessel combustor, the micro-nano energetic material is loaded into the micro-closed bomb vesselcombustor, and the other end of the micro-closed bomb vessel is connected with the piezoelectric sensor. The constant-capacity combustion pressure testing device has the advantages of simple structure, strict sealing and convenient operation, and can meet the testing requirements of millimeter-scale micro-nano energetic materials.

The invention discloses a high-intensity intelligent public transport card shell. The high-intensity intelligent public transport card shell comprises an upper shell and a lower shell; the upper shelland the lower shell are connected mutually through a rubber block to form a sealed cavity; a chip is fixed in the cavity; a filler is arranged between the chip and the cavity; two elastic connectingparts are arranged on the outer walls of the upper shell and the lower shell respectively; and the width of the connecting parts is 1/4 of the total width of the upper shell. When an IC card is to bedeformed in suffering from external force which is perpendicular to the card surface or has a certain angle with the card surface, the two elastic connecting parts arranged on the outer walls of the upper shell and the lower shell respectively can be deformed along with the external force direction so as to relieve torsion of the overall card surface caused by the external force; and meanwhile, the rubber block between the upper shell and the lower shell is compressed under stress, and in the deformation recovery process, the elastic connecting parts are assisted to reduce the torsion degree on the card surface to the minimum, and damage of the chip caused by over torsion of the IC card can be further prevented.

The invention relates to a water-swelling rubber ring which comprises a water-swelling rubber ring body, wherein a first check ring protruding outwards is arranged at one end of the water-swelling rubber ring body, and a second check ring protruding outwards is arranged in the middle of the water-swelling rubber ring body; the water-swelling rubber ring body is prepared from the following raw materials in parts by weight: 10 to 100 parts of natural rubber, 10 to 100 parts of chloroprene rubber, 10 to 80 parts of polyacrylamide, 20 to 60 parts of superfine calcium carbonate, 0.5 to 10 parts of dicumyl peroxide, 0.5 to 10 parts of magnesium oxide, 0.1 to 10 parts of an accelerant DETU, 0.5 to 10 parts of zinc oxide, 0.5 to 10 parts of stearic acid and 0.5 to 20 parts of chlorinated polyethylene. Compared with the prior art, the fatigue-resistant water-swelling rubber ring disclosed by the invention has the advantages of higher mechanical property, excellent water absorption swelling rate, excellent fatigue resistance, capability of repeatedly absorbing water and swelling for more than 25 times, good sealing property, no leakage. The rubber ring can be widely applied to complex environments such as various tunnels, underground and underwater engineering or environments where the rubber ring is inconvenient to replace frequently.

The invention relates to the field of machining, in particular to a floating type constant-pressure tool apron device. The floating type constant-pressure tool apron device comprises a moving base capable of moving along the horizontal plane, a tool apron is arranged on the moving base and comprises a hard air pipe, a driving piston is arranged in the air pipe, and the air pipe is sleeved with a floating sleeve; and the lower end of the air pipe communicates with a lower air pipe joint in a sealing mode, an upper air pipe joint is connected to an air tank through an upper air pipe with an upper electromagnetic valve, the lower air pipe joint is connected to the air tank through a lower air pipe with a lower electromagnetic valve, an upper air pressure sensor is arranged on the upper air pipe, and a lower air pressure sensor is arranged on the lower air pipe. According to the floating type constant-pressure tool apron device, operation is convenient, the working stability is high, and the control precision is high.

The invention discloses a glue injection clamp element used in a window frame manufacturing process, and belongs to the technical field of door and window sectional materials. The glue injection clamp element comprises a first base and a second base, wherein the second base is vertically and fixedly connected with one end of the first base; the first base is a smooth panel; a smooth inclined surface, a first glue injection hole, a first clamp strip and a second clamp strip are arranged on/in the panel; the first clamp strip is provided with a first side shaft clamp groove, a first middle shaft clamp groove and a first clamp opening; the cross section of the second base is of a U-shaped structure; the second base comprises a baffle plate, a second glue injection hole, a third glue injection hole, a first side plate, a second side plate, a second middle clamp groove and a second side edge clamp groove. The glue injection clamp element has the advantages that through optimal design, only slight pressing-in is needed in the use process; the tight sealing of the connecting position is ensured; the difficult problem of rainwater leakage is solved; the intensity at the splicing part is improved; meanwhile, the production efficiency and the attractive appearance effect of splicing seams are improved.

The invention discloses an automatic-adjustment variable-flow siphon rainwater hopper. The rainwater hopper comprises a shell assembly, a flow guide assembly and a rectification assembly; the shell assembly comprises a rainwater hopper body and a tail pipe, wherein the lower wall of the rainwater hopper body communicates with the upper end of the tail pipe; and the flow guide assembly comprises afirst guide rod, a flow guide cover and a first floating body, wherein the first guide rod is fixedly welded to the upper side of the rainwater hopper body, a first external thread is arranged on theupper portion of the first guide rod, and a first limiting nut is connected to the surface of the first external thread in a threaded mode. According to the rainwater hopper, the first floating body is arranged on the flow guide cover, a second floating body is arranged on a rectifier, the first floating body and the second floating body generate buoyancy in water, and along with ascending and descending of the water level, the flow guide cover and the rectifier can ascend or descend along guide rods; when the flow guide cover and the rectifier ascend, the water passing sectional area is increased, and the drainage flow is increased; and when the flow guide cover and the rectifier descend, the water passing sectional area is reduced, the drainage flow is reduced, and the requirement for rapid drainage can be met.