334 results about "Gas bladder inflation" patented technology

The invention provides a chimney titanium composite plate welding seam argon protection welding device, and belongs to the field of protection welding equipment.The chimney titanium composite plate welding seam argon protection welding device comprises a surrounding part which comprises an inner ring arranged in a cylindrical titanium composite plate, an inflation air bag is fixedly connected to the outer portion of the inner ring, and an air bag gas conveying pipe is fixedly connected to the right side of the inflation air bag; an argon conveying pipe is fixedly connected to the interior of the inner ring, a rotating ring shell is rotationally connected to the exterior of the inner ring, an exhaust port is fixedly connected to the exterior of the rotating ring shell, and a pushing assembly is arranged on the exterior of the rotating ring shell. The surrounding component is arranged, the rotatable rotating ring shell is used for driving the exhaust port to move, the argon outlet position can be adjusted according to the welding position, the welding position can be filled with argon all the time, the welding quality is prevented from being affected, meanwhile, adhesive tape is not needed for sealing, the operation convenience is improved, and the welding efficiency is improved. And the freely telescopic sliding column can retract into the fixing shell after welding is completed, and the welding stroke is prevented from being affected.

The utility model discloses a glass bottle conveying mechanism, which relates to the technical field of glass bottle conveying and comprises a base and a mounting seat, a conveying belt is rotatably connected to the inner side of the conveying belt, a fixing rod is fixedly connected to the bottom of the conveying belt, a mounting plate is fixedly connected to the bottom of the fixing rod, and a fixing cylinder is fixedly connected to the bottom of the mounting plate. An air bag is fixedly connected to the bottom of the fixing cylinder and communicates with the inner space of the fixing cylinder, an inflation device is fixedly connected to the upper side of the mounting plate, an air pipe is fixedly connected between the inflation device and the fixing cylinder, an exhaust port is formed in the outer portion of the fixing cylinder, and an exhaust mechanism is mounted on the outer portion of the fixing cylinder. According to the device, rapid installation is completed by simply inflating the air bag to abut against the opening of the glass bottle, the air bag can be conveniently deflated to demount the glass bottle, the glass bottle can be rapidly demounted and mounted through the simple device, the manufacturing cost of the conveying device is greatly reduced, the glass bottle mounting and dismounting efficiency is improved, and machining and production of the glass bottle are facilitated.

The invention relates to the technical field of medical auxiliary instruments, in particular to a self-adaptive compression hemostasis device used after coronary angiography and a hemostasis method.The self-adaptive compression hemostasis device comprises an annular belt used for being worn, a pressure sensor, a humidity sensor, an air pump and a control panel, the pressure sensor and the humidity sensor are arranged on a detection part, and the inner side of the annular belt is provided with a pressure area used for covering a puncture position; an air bag is arranged in the pressure area, a detection part used for making contact with the puncture position is arranged on the inner side of the air bag, a catheter used for conveying air is arranged on the air bag, and the pressure area is constructed to apply compression force to the puncture position through air inflation of the air bag; the air pump is configured to achieve inflation pressurization and exhaust pressure reduction of the air bag by switching the current direction. The control panel is configured to use the control module to drive the air pump to adjust the state of the air bag by taking a preset hemostasis and safety threshold value as a reference so as to form continuous and dynamic self-adaptive adjustment on the compression force of the puncture part, and form negative feedback control on the self-adaptive adjustment by receiving the first electric signal and the second electric signal.

The utility model relates to the technical field of corrugated board production, and discloses a heating device for corrugated board production, which comprises a processing table, a box body is arranged at the inner bottom end of the processing table, an adjusting heating component is arranged at the top of the box body, and an adjusting feeding component is arranged on the side surface of the adjusting heating component. The adjusting feeding assembly comprises a magnetic attraction strip, a limiting sliding seat, a limiting sliding rod, an air pump, a conveying air pipe, an air bag, a magnet block and a limiting clamping plate, and the limiting sliding seat is fixedly connected to the left side of the top plate. According to the heating device for corrugated board production, the feeding adjusting assembly is arranged, an air pump is started to be matched with a conveying air pipe to input air into an air bag, the air bag is inflated and collides, a magnet block is driven to move upwards till the magnet block abuts against the bottom of a magnetic attraction strip, and after the magnet block makes contact with the magnetic attraction strip, magnetic attraction locking can be achieved, and the abutting force is matched; and the paperboard conveying device can be matched with paperboard conveying, the paperboard is limited, and the heating effect is ensured.

The utility model provides a drowning self-rescue knapsack which comprises a knapsack body and a self-rescue device, a cavity is formed in the knapsack body, and the self-rescue device comprises an air bag arranged in the cavity; the air storage tank is arranged in the cavity and is controlled to be communicated with the air bag; the control assembly is arranged on a pipeline through which the air bag is communicated with the air storage tank, and the control tail end of the control assembly is located outside the cavity; high-pressure gas is stored in the gas storage tank, and the control assembly is configured to communicate the gas storage tank with the gas bag when the tail end is controlled to be pulled, so that the gas bag is inflated. The air bag can be rapidly inflated through the air storage tank, and then enough buoyancy is provided for a drowning person through the backpack, so that it is ensured that the drowning person can move in the water body.

The utility model provides a big swan pipe tank mouth air bag locking type sealing device, including main part structure and air bag structure, main part structure contains inner tube, is equipped with outer tube outside the inner tube, is equipped with flange plate in the outer tube bottom, and the flange plate is fixedly connected through bolt and air bag structure, air bag structure contains air bag, inflation hole and fixed frame, and the air bag is clamped and is connected on the upper and lower two sides of fixed frame, and the air bag top is equipped with inflation hole. Through the inflation expansion in the air bag, make it and the tank mouth close adhesion, effectively improve the sealing reliability, avoid oil gas leakage, improve the sealing property further through the sealing washer set up in the connecting place.

This invention belongs to the technical field of water rescue equipment, specifically providing a water rescue inflatable device with an automatic alarm function. It consists of an airbag, a strap connecting the airbags, and a main unit fixed to the strap. The device uses a trigger assembly in conjunction with an electromagnet to release a spring shaft, driving the main gear and secondary gear to mesh and rotate. This drives a rotating light shield to emit a flashing signal from a high-brightness LED and activate the alarm. A water-soluble sheet dissolves and releases the elasticity of the inflation spring, pushing a puncture needle to puncture the inflation cylinder, allowing gas to flow through a diversion cap into the airbag for inflation, simultaneously activating the diving whistle. This device integrates early audible and visual alarms, attitude sensing triggering, mechanical flashing, and pneumatic backup alarms, effectively solving the problems of existing life-saving equipment having a single alarm method, lacking early active alarms, and lacking dual protection mechanisms.

The invention discloses a split Hopkinson pressure bar automatic experiment device based on a multi-axis manipulator and an inflatable plug, the split Hopkinson pressure bar automatic experiment device comprises a rack, a gas gun, a shaper, an incident bar, a transmission bar and a fastener, the multi-axis manipulator is arranged on the side of the gas gun, and a polishing piece, a negative pressure adsorption piece and a clamping piece are integrated at the tail end of the manipulator; an inflatable plug with an air bag is arranged, the plug is provided with an auxiliary air channel and a main air channel, the auxiliary air channel inflates the air bag to seal an outlet of the bore, and then compressed air is introduced into the main air channel to push the bullets back to a firing position; the device sequentially completes end face polishing, reshaper automatic pasting and bullet automatic resetting, full-process automation of experiment preparation and post-treatment is achieved, and manual tweezers pasting and long rod bullet retreating operation can be replaced.

The utility model discloses a robot tail end fully-closed protective cleaning device which comprises a fixing block, a protective mechanism is arranged in the fixing block and comprises an opening formed between the two sides of the fixing block, a fixing ring sleeve is fixedly connected to the inner wall of the circumferential side face of the opening, and an air bag is fixedly connected to the inner wall of the circumferential side face of the fixing ring sleeve. The outer wall of the circumferential side face of the air bag is fixedly connected with a sealing soft sleeve located in the opening. The protective clothing or the protective cover is fixed in the connecting groove through the arranged air bag, the protective clothing or the protective cover is wrapped on the external robotic arm, so that the fixing block is sleeved on the external robotic arm, the air bag is inflated by the fixing pipe, and the air bag drives the sealing soft sleeve to extrude and abut against the external robotic arm; and the air bag and the sealing soft sleeve fill a gap between the device and the external robot arm, so that external dust and other impurities are prevented from entering the gap when the gap is formed between the device and the external robot arm.

The embodiment of the invention provides equipment, a method and a device for measuring blood pressure based on a boosting process. The equipment comprises a cuff with an inflatable air bag, a pressure signal acquisition unit, a piezoelectric signal acquisition unit and a processor, the piezoelectric signal acquisition unit is arranged on the side, attached to the arm, of the cuff, and the pressure signal acquisition unit acquires pressure signals in the cuff in the air bag inflation stage when the equipment is used for measuring blood pressure; the piezoelectric signal acquisition unit is used for synchronously acquiring piezoelectric signals generated by brachial artery pulsation in an air bag inflation stage; and the processor is used for processing the piezoelectric signal to obtain the signal position of the effective Korotkoff sound signal, and obtaining a blood pressure measurement result based on the signal amplitude of the pressure signal at the signal position. In the blood pressure measurement process, the air bag can be inflated slowly and evenly, pressurization is stopped immediately when it is detected that the pressure reaches a target value, the use comfort of the device is improved, meanwhile, Korotkoff sound is accurately detected, and the blood pressure measurement accuracy is improved.

This invention discloses a method for resisting the creep of an auxiliary spring and compensating for height loss due to creep. It uses a mandrel as a base to establish a pneumatic auxiliary support for the auxiliary spring. During application, this support shares the load and impact on the auxiliary spring, and when the auxiliary spring creeps and loses height, it is inflated with gas to compensate for the height loss. Furthermore, the space between the support plate and the mandrel is sealed to form an outer cavity, and a sealed inner cavity is set within the mandrel, connecting the outer and inner cavities. Both cavities are then pressurized to a set pressure value. This slows down the creep process of the auxiliary spring and compensates for height loss after creep occurs. Throughout the entire lifespan of the air spring, the rubber air bladder does not need to be inflated to compensate for the height loss of the auxiliary spring, thus ensuring that the entire air spring maintains its ideal original stiffness.

The invention provides a durable diaphragm valve and a control method, the diaphragm valve comprises a valve body, a valve cover, a valve rod, a diaphragm assembly, an air pump, a driver and a controller, the valve body comprises a medium inlet channel, a medium outlet channel and a valve seat part, the medium outlet channel is provided with a downstream flow sensor, the medium inlet channel is provided with an upstream pressure sensor, and the valve seat part is provided with a downstream pressure sensor; the diaphragm assembly comprises an upper diaphragm and a lower diaphragm, a deformation cavity is formed between the upper diaphragm and the lower diaphragm, an air bag is arranged in the deformation cavity, the upper end face of the middle of the air bag is connected with the upper diaphragm, and the lower end face of the middle of the air bag is connected with the lower diaphragm, so that the lower diaphragm shrinks along with the air bag to be close to the upper diaphragm and expands to be away from the upper diaphragm. The air pump is used for inflating or deflating the air bag to maintain pressure, and the air pump is provided with an air bag pressure sensor for monitoring the pressure of the air bag; the service life of circulating opening and closing of the valve is remarkably prolonged, deformation of the diaphragm can be reduced by means of inflation and deflation of the air bag, and therefore diaphragm fatigue caused by stress concentration is reduced.

The invention discloses a clinical compression hemostasis device for the general surgery department, and relates to the technical field of medical instruments. The clinical compression hemostasis device for the general surgery department comprises a clamping mechanism, a clamping block, a sliding piece, an air bag, an inflation device and a locking mechanism. The clamping mechanism comprises two clamping ends capable of relatively moving and a driving assembly for driving the two clamping ends to be close to or far away from each other, and the driving assembly can lock and maintain the relative positions of the two clamping ends so as to resist separating force which is applied externally and enables the two clamping ends to be far away from each other; the two clamping blocks are oppositely arranged and connected to the two clamping ends of the clamping mechanism correspondingly. The two sliding pieces are in sliding connection with the two clamping blocks in the clamping face directions of the clamping blocks correspondingly. The number of the air bags is two. The clinical compression hemostasis device for the general surgery department can be firmly locked in a compression state, prevents the compression unit from accidentally loosening, and supports flexible adjustment of the action area of the compression unit according to the wound position.

The invention discloses a protector for an oxygen saturation probe, which comprises an inner air bag skin and an outer air bag skin, two ends of the outer air bag skin and the inner air bag skin are hermetically connected to a first elastic rubber ring and a second elastic rubber ring, the first elastic rubber ring and the second elastic rubber ring are parallel in two annular surfaces, the outer air bag skin wraps the inner air bag skin to form an inflatable bag, and a wrapping chamber with two open ends is formed in the inner air bag skin. And a fixed inflating head is arranged on one side of the outer airbag skin. The first elastic rubber ring is larger than the second elastic rubber ring in diameter. The oxygen saturation probe has the advantages that the oxygen saturation probe can be properly expanded from the first elastic rubber ring to be stuffed into the wrapping chamber, the whole oxygen saturation probe is wrapped by the inner air bag leather, the second elastic rubber ring is located at the end of the oxygen saturation probe, then the inflation head is connected to inflate the inflation bag, the outer air bag leather is bulged, and the inner air bag leather further wraps the oxygen saturation probe. When the oxygen saturation probe falls or collides, the outer air bag skin and the inflatable bag play a role in damping and buffering, so that the oxygen saturation probe is protected from being damaged by collision.

The embodiment of the invention discloses an air bag pressure control device, medical ventilation equipment and a control method of the medical ventilation equipment. In the process that a user uses the medical ventilation equipment to be connected with a trachea cannula to convey breathing gas to the trachea of a patient, an air bag of the trachea cannula is inflated or deflated through a pressure adjusting module of the air bag pressure control device; the pressure of the air bag is further adjusted, the pressure of the air bag is measured through the pressure monitoring module, the pressure adjusting module is controlled through the control module to adjust the air bag at different pressures, the air leakage amount determined by the medical ventilation equipment under different air bag pressures is obtained at the same time, and then analysis is conducted according to the change condition of at least two air leakage amounts. After the target pressure is determined, the pressure adjusting module can be controlled to adjust the pressure of the air bag according to the target pressure, so that the pressure of the air bag can be automatically adjusted to adapt to physiological differences of different patients, and more accurate, real-time and personalized air bag pressure management is realized.

The utility model discloses an air bag hair clasp, which relates to the field of hair clasps, and comprises a support main body, the left side and the right side of the bottom end of the support main body are respectively provided with a fixed head ring, the left side and the right side of the top end of the support main body are respectively and fixedly connected with a mounting clamping shell, and ear moving air bags are inserted into the mounting clamping shells. A trigger button is arranged in the mounting clamping shell on the right side, the bottom end of the ear-driven air bag fixedly communicates with an air conveying pipeline, the bottom end of the air conveying pipeline fixedly communicates with a manual air bag, a light mechanism is arranged at the top end of the supporting body, and the light mechanism triggers an acousto-optic action when the manual air bag triggers an extrusion state. By combining the inflation action with sound effect triggering, a user can hear corresponding music while pinching down the air bag for inflation, interestingness and interactivity in the using process are increased, the sense of participation of the user is improved, and by combining the mechanical action with the sound effect, the device not only provides feedback of touch, but also provides enjoyment of auditory sense.

The invention relates to a device and method for installing a submersible mixer without production halt under the condition that a sewage plant site is limited, the device comprises a positioning truss, the positioning truss is provided with a rectangular installation space, and at least three guide rail sliding grooves extending to the bottom of the positioning truss are formed in the rectangular installation space of the positioning truss; an inflation air bag is arranged on the guide rail sliding groove in a sliding mode, the inflation air bag is connected with an inflation pipe, the inflation pipe is connected with an air pump, and the inflation air bag is used for completing lowering and installation of the mixer concrete foundation by adjusting the inflation state of the inflation air bag after the mixer concrete foundation is poured. Proper buoyancy is provided for the concrete foundation of the mixer by controlling expansion and contraction of the air bag, so that water-carrying installation operation of the foundation of the submersible mixer can be completed without depending on large hoisting equipment, normal production and operation of a sewage plant in the whole process are allowed in the installation process, water pumping, inverted drainage and even shutdown and production stopping are not needed, and the installation efficiency is improved. The construction time and cost are greatly saved, the working efficiency is improved, and the economic benefit is remarkable.

The utility model relates to the technical field of unmanned ships, and particularly discloses an unmanned ship launching and recycling device which comprises an auxiliary device, the auxiliary device comprises a first fixing shaft and a second fixing shaft, and sliding grooves are formed in the first fixing shaft and the second fixing shaft. Two symmetrically-distributed sliding blocks are slidably connected to the interiors of the two sliding grooves, supporting blocks are hinged to the other ends of the four sliding blocks through hinged supports, sliding ways are fixedly connected between every two supporting blocks in the vertical direction, and air bags are arranged at the left end and the right end of a second fixing shaft. The upper ends of the two air bags are both communicated with air bag inflation nozzles, and the purposes that the device can adapt to different conditions such as high bank slopes, deep water areas and shoal areas, the sliding way and the fixing shaft can be conveniently assembled and disassembled, the air bags can be conveniently compressed and stored through cooperation of the inflation air bags, and the device is easy to carry are achieved.

This invention relates to a graded trigger-type crash barrier and crash prevention method for dry dock boarding ramps, belonging to the technical field of dry dock boarding ramps. The crash barrier includes uprights and crossbeams. A crash prevention structure is installed on the crossbeams, comprising: a mounting plate with a locking part on the back for locking onto the crossbeam; an outer airbag connected to the front of the mounting plate, which is inflated under normal conditions to form a first-level crash buffer; an inner airbag connected to the front of the mounting plate and located inside the outer airbag, which is deflated under normal conditions; and a high-pressure gas cylinder installed at the locking part, which is connected to the inner airbag via a pipeline. A pressure switch is installed on the pipeline, and the pressure detection end of the pressure switch is located inside the outer airbag. When the outer airbag is impacted and the internal pressure rises to the trigger threshold of the pressure switch, the pressure switch opens the pipeline, and the high-pressure gas cylinder inflates the inner airbag, causing the inner airbag to expand and form a second-level crash buffer.

The invention discloses a gas pressure stabilizing device for a ship nitrogen generation system. The gas pressure stabilizing device comprises a built-in fixed integrated air bag, a cylindrical porous impingement plate, a diffusion air inlet pipe and the like. The built-in fixed integrated air bag is positioned in the tank body and is fixed in the tank body through a top fixing disc, a bottom fixing disc and an internal supporting structure; the cylindrical porous impingement plate is positioned between the built-in fixed integrated air bag and the diffusion air inlet pipe; the diffusion air inlet pipe is positioned at an air inlet of the tank body and connected with an air outlet pipeline of the air compressor; the air bag inflating assembly is mounted at the top of the tank body, and is communicated with the built-in fixed integrated air bag to realize sealing; the built-in fixed integrated air bag, the cylindrical porous impingement plate, the diffusion air inlet pipe and the air bag inflation assembly work cooperatively, and efficient pressure stabilization in the limited space of the ship is achieved. Compared with a conventional pressure stabilizing device, the built-in reinforced integrated air bag is additionally arranged, so that the gas buffering requirement under the conditions of limited ship space and humid environment is met.

The invention relates to the technical field of liquid-solid separation, in particular to a liquid-solid separation device with a rubber air bag arranged in a steel shell, which comprises a reaction cylinder, an expansion air bag is fixedly arranged on the inner side of the reaction cylinder, a plurality of diversion trenches are arranged on the surface of the inner wall of the reaction cylinder, and a plurality of discharge ports are fixedly arranged at the lower end of the reaction cylinder. A material injection opening is fixedly formed in one side of the upper end of the reaction cylinder, an inflation and deflation mechanism is fixedly arranged on one side of the upper end of the reaction cylinder, one end of the inflation and deflation mechanism is connected with a one-way valve through a pipeline, and a liquid-solid mixing system is directly compressed through flexible pressure generated by inflation and expansion of an air bag; the liquid can be quickly and efficiently discharged through the small outlet in the steel shell, and solid crystals or particles are retained in a mixed system. Compared with traditional centrifugal separation, the separation efficiency is improved, and particularly, the effect is more remarkable when mixtures such as tiny crystals or emulsified liquid which are difficult to separate are treated.

The invention provides a cleaning and disinfecting device for the anorectal department, and belongs to the technical field of medical instruments. Comprising an infusion pump and a cleaning pipe, the positioning assembly is used for cleaning and disinfecting the anus of a patient, the positioning assembly is connected with the cleaning pipe, the positioning assembly comprises a positioning cylinder and a blocking and discharging plate which are arranged outside the cleaning pipe in a sleeving mode, and the blocking and discharging plate is clamped and fixed to the bottom of the positioning cylinder. Through the arrangement of the positioning assembly, the supporting air bag can gradually and slowly support the anus of a patient after being inflated, so that friction between the cleaning pipe and a wound surface in the flushing process is avoided, pain of the patient in the flushing process is relieved, tissue in the rectum of the patient can be supported after the expansion air bag is inflated, and the cleaning effect is improved. The excrement is conveniently softened by means of water sprayed out of the cleaning pipe in the later period, the excrement softening efficiency is improved, the softened excrement is more easily discharged out of the body of the patient, and large friction between the excrement and the wound surface in the defecation process of the patient is avoided.

The utility model discloses an interlayer buffer structure of safety clothes, which comprises an air bag embedded in a leg strap. The hanging ring is arranged on the back part; the mounting box is arranged right below the hanging ring; the connecting pipe is communicated with the air bag; the carbon dioxide gas cylinder is detachably connected to the interior of the connecting pipe; the pressing rod is rotationally connected to the upper part of the mounting box; a pull rope is arranged between the pressing rod and the hanging ring, and the pressing rod can selectively pierce the carbon dioxide gas cylinder; and a tension spring is arranged between the pressing rod and the mounting box. The flat leg straps do not affect flexible movement of two legs, the air bags are inflated to buffer impact at the moment of falling, and the leg straps are prevented from tying and hurting the body. Manual operation is not needed, response is timely, and safety is high; when falling in various postures, inflation can be induced. The installation box is high in integration level and compact in layout, and the box belt is convenient to replace after being opened.

The utility model discloses a medical tube air bag inflating and water filling device, and relates to the field of hospital supplies. Comprising a shell, a water storage bottle, a manual pump, a first three-way valve, a second three-way valve, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a connector. During inflation, the first three-way valve is adjusted to communicate the second pipeline with the fifth pipeline, and the second three-way valve is adjusted to control the fifth pipeline to communicate with the fourth pipeline; then the hand-held handle operates the manual pump, and air enters the manual pump through the second pipeline, the first three-way valve, the fifth pipeline, the second three-way valve and the fourth pipeline; then the connector is connected with an inflation connector on the medical tube, and the second three-way valve is operated to enable the third pipeline to be communicated with the fourth pipeline; and then the manual pump is operated, and air is output through the fourth pipeline, the second three-way valve, the third pipeline and the connector and is inflated into the air bag. In water filling, the first three-way valve is adjusted to enable the first pipeline to be communicated with the fifth pipeline, and other operations are the same as water filling.

The invention discloses an automatic filling machine for cleaning agent production, and relates to the technical field of filling devices.The automatic filling machine comprises a filling assembly, and the filling assembly comprises a height adjusting piece, an adjusting piece and a buoyancy piece; the height adjusting piece comprises a mounting plate; the buoyancy piece comprises a liquid pipe, a hose, an air bag, a connecting rod and a first air pump. A mounting plate and a hose are respectively fixed at upper and lower ends of the liquid pipe; the air bag is arranged outside the hose, and the first air pump is fixed to the mounting plate and communicates with the air bag; the air bag is used for inwards pressing and blocking the hose; two ends of the connecting rod are respectively arranged on the mounting plate and the airbag; during filling, the air bag drives the mounting plate, the liquid pipe and the hose to be lifted along with the liquid level under the action of liquid buoyancy, only the hose and the lower portion of the air bag make contact with a cleaning agent, the situation that the cleaning agent is attached to the liquid pipe in a large area is avoided, when the air bag is pulled out, the air bag is inflated to block the hose, internal residual cleaning agent is prevented from dripping, and accurate filling amount is guaranteed; the air bag is attached to the bottle opening when rising, and the bottle opening scrapes off the cleaning agent attached to the surface of the air bag.

The invention discloses a tortuous path filter for an airbag inflator. The airbag assembly may include an airbag and an inflator that provides inflation gas to inflate the airbag. A filter module may be positioned such that inflation gas exiting the inflator must first pass through the filter module. The filtration module may be formed from a sheet metal wrapped in a generally helical tubular shape. The filtration module may have an inner layer, an intermediate layer, and an outer layer. The intermediate layer generally surrounds the inner layer, and the outer layer generally surrounds the inner layer and the intermediate layer in a helical fashion. The inner layer, the intermediate layer, and the outer layer may each have a pattern of holes and dimples that are separated and / or displaced from each other. The dimples may protrude toward adjacent layers to maintain a pitch such that a relatively unrestricted air flow can flow from the apertures of the inner layer through misaligned apertures of the intermediate layer and the outer layer. The resulting tortuous gas flow path may assist in slowing, cooling, and / or purifying the gas before it exits the inflator.

The utility model relates to the technical field of rehabilitation training devices, in particular to a pneumatic hand function rehabilitation training device which comprises a plurality of annular separation air bags, a plurality of interval air bags corresponding to the separation air bags and an inflation air bag. The air pressure is kept consistent in the separation air bag and the interval air bag, and the separation air bag is wound on the corresponding inner wall of the supporting trainer; the separation airbags expand in response to the extruded state of the corresponding interval airbags, the interval airbags expand in response to the extruded state of the inflatable airbags, and the controller inflates the inflatable airbags in response to air pressure reduction of the inflatable airbags. Compared with the prior art, the hand rehabilitation training device has the advantages that the multiple air bags which are communicated with one another are arranged, fingers are separated according to actions of the hand, rehabilitation training of the hand can be achieved only by controlling contraction and expansion of the air bags to be matched with the finger ring assembly, and the rehabilitation training effect when the hand is in the holding posture can be effectively improved.

The utility model discloses a building wall seam repairing asphalt anti-permeation detection device which comprises a base, a sliding groove is formed in the base, a first two-way screw rod is rotationally connected into the sliding groove, clamping assemblies are arranged on the two sides of the upper end of the sliding groove, and an adjusting assembly is arranged in the middle of the rear side of the base. According to the asphalt block detection device, the distance between the clamping assemblies can be adjusted through the first servo motor and the first two-way screw rod, asphalt blocks of different sizes can be clamped conveniently, the pressurizing assembly and the detection assembly can be driven to be close to the asphalt blocks through the adjusting assembly, the air bags are made to make contact with the upper faces and the lower faces of the asphalt blocks respectively, and therefore the asphalt blocks can be detected conveniently. The air bag can be inflated through the arranged air pump, the sealing performance is improved, liquid in the liquid storage tank can be pumped through the connecting pipe through the arranged pressure pump, the liquid is pumped out through the liquid pumping pipe, the upper end of the asphalt block is pressurized, and whether the lower end of the asphalt block permeates or not is detected through the arranged detection probe.

The utility model relates to the technical field of inflatable protective sheds, in particular to a support-free inflatable watermelon planting temporary protective shed which comprises a protective shed body, fixing plates are fixedly arranged on the two sides of the bottom of the protective shed body, the protective shed body at least comprises an air bag frame, and the air bag frame at least comprises a plurality of first air bags arranged longitudinally and a plurality of second air bags arranged transversely. The first air bags and the second air bags are arranged in a staggered and communicated mode, the overall stability of the air bag frame is enhanced, the supporting ribs are fixedly connected to the second air bags, the supporting and shaping effects are achieved when the air bags are inflated, the air bags are prevented from deforming or collapsing due to internal pressure, and the protective layers are fixedly connected to the inner side and the outer side of the air bag frame. A windproof part is further arranged on the protective shed and comprises a net cover and an adjusting rod, the net cover has certain elasticity and is in close contact with the upper surface of the outer side heat insulation layer, the protective shed is effectively prevented from being blown by wind to deviate or deform due to the inflation design, and the edges of the four corners of the windproof part are connected with the fixing plates.

An abdominal pressure exsufflation belt is disclosed. An example of the abdominal pressure exsufflation belt includes an abdominal belt configured to be worn by a person about their abdomen. The exsufflation belt also includes a pouch of the abdominal belt. The exsufflation belt also includes a bladder in the pouch. The exsufflation belt also includes tubing connected between the bladder and an external ventilator to enable air flow from the external ventilator to expand the bladder and press against the abdomen of the person wearing the abdominal belt. Expansion of the bladder delivers a force to the abdomen resulting in expiration as the external ventilator inflates the bladder, followed in sequence by passive inspiration by the person wearing the abdominal belt as the bladder deflates.