102results about How to "Won't flow backwards" patented technology

The invention discloses a lumber drying kiln. An isolation wall is arranged between the bottom part and the top part in the drying kiln, the isolation wall divides the space in the kiln into an air heating room used for installing a drying furnace, and a lumber drying room; wherein, an upper ventilation opening is arranged at the upper part of the isolation wall, a lower ventilation opening is arranged at the lower part of the isolation wall, a fan used for blowing air to the air heating room from the lumber drying room is arranged between the air heating room and the lumber drying room; an air exhaust passage is arranged at the top part corresponding to the lumber drying room; because the fan is arranged at the position of the upper ventilation opening, the fan sucks the hot air from the lumber drying room to blow into a lumber heating room, the back flow does not happen, thereby leading the heated air circulation to be smoother, therefore the drying quality to be improved. Because the isolation wall is arranged between the air heating room and the lumber drying room, the charring of the lumber close to a combustion furnace because of over high temperature is avoided, the lumber far away the combustion furnace does not have the drying phenomenon, to lead the drying to be evener.

The present invention provides a high power inhibition foam capable of preventing and controlling coal self-combustion and its generation equipment. It is characterized by that the pressure water flow is mixed with high power inhibition foam raw liquor according to a certain ratio, then their mixture is fed into a spray mixer under the action of negative pressure formed by water pressure and gas with a certain pressure in sprayer, and the gas, water and high power inhibition foam raw liquor can be fed into a foaming device by means of spraying mode under the gas pressure so as to make foam formation. Said foam can be used for covering coal body, and can be used for preventing coal self-combustion.

A surface cleaning device comprises a suction nozzle, a water tank, a suction machine set, a suction pipeline and a negative pressure pipeline, wherein the suction nozzle is used for absorbing liquid on the surfaces of objects and outside air in the process of cleaning the surfaces of the objects; the water tank is provided with a cavity and used for collecting the absorbed liquid; the suction machine set is used for generating negative pressure and forming suction force; the suction pipeline is connected between the suction nozzle and the water tank and used for transporting the absorbed liquid and the outside air to the water tank; the negative pressure pipeline is connected between the suction machine set and the water tank and connected with an air path of the suction pipeline through the cavity inside the water tank. The surface cleaning device is characterized in that the suction nozzle, the suction pipeline, the water tank, the negative pipeline and the suction machine set are sequentially arranged from top to bottom; the liquid and the outside air absorbed by the suction nozzle enter the water tank along the same path through the suction pipeline from top to bottom; the liquid absorbed by the suction nozzle is collected by the water tank after entering the water tank; the outside air absorbed by the suction nozzle continues to flow along the path from top to bottom after entering the water tank and is exhausted by the suction machine set after passing through the negative pressure pipeline. The surface cleaning device is simple in structure, and can rapidly absorb the liquid on the surfaces of the objects and collect the liquid in the water tank.

A surface cleaning device capable of spraying mist or spraying water is characterized by comprising a mist spraying or water spraying device, a suction nozzle, a first water tank and a suction unit. The mist spraying or water spraying device is used for spraying cleaning liquid or vaporific cleaning liquid to the surface of an object to be cleaned. The suction nozzle is used for sucking the liquid sprayed on the surface of the object and outside air when the object surface is cleaned. The first water tank is provided with a cavity and used for collecting the sucked liquid. The suction unit is used for generating negative pressure, forming suction force, enabling the sucked liquid to enter the first water tank and discharging the sucked outside air. The surface cleaning device capable of spraying mist or spraying water not only has the functions of cleaning and suction, but also has a function of spraying mist or spraying water, and is convenient to use due to the fact that an additional independent mist spraying or water spraying device does not need to be additionally purchased.

The invention provides a gas liquid mixing apparatus and an application method thereof. The gas liquid mixing apparatus comprises a liquid inlet pipe (19) and a gas inlet pipe (17), and is characterized in that the gas liquid mixing apparatus also includes a gas distributor pipe (3) and a drive unit. One end of the gas inlet pipe (17) is equipped with a plurality of first gas spray orifices (18),which are inserted into liquid inlet pipe (19); the gas distributor pipe (3) is sleeved in the gas inlet pipe (17) and is equipped with a plurality of second gas spray orifices (2) on corresponding positions of the first gas spray orifices (18) at one end; the drive unit drives the gas distributor pipe (3) to move, so as to adjust relative positions of the first gas spray orifices (18) and the second gas spray orifices (2). The gas liquid mixing apparatus of the present invention can rapidly cut out gas feed when gas lateral pressure and flow are reduced, so as to guarantee no backflow.

The invention discloses an automatic water supplementing steam generating device comprising a water tank assembly, a steam generator, a steam pot, a heating body and an anti-burning device. The water tank assembly is flexibly arranged above a water tank seat, the steam generator is fixedly arranged above the water tank seat, the heating body is arranged under the steam pot, the lower end of the water tank is provided with a water outlet valve, the water outlet valve is communicated with the lower end of the steam pot through a connecting pipe, and the connecting pipe is arranged in the water tank; the end of the connecting pipe connected with the water outlet valve is provided with a water inlet valve, the water inlet valve is mutually matched with the water outlet valve, the upper end of the steam pot is communicated with the inner upper end of the water tank of the water tank assembly through an air pressure balance pipe. By the application of the automatic water supplementing steam generating device, automatic water supplementing is achieved, water pumps are omitted, and cost is effectively decreased; by the arrangement of an automatic decompression device and an anti-dry burning temperature sensor, the performance of safety use is high, the pressure of steam outputting is adjustable and potential risk is eliminated effectively by the arranged anti-burning device.

The invention relates to the technical field of gear machining, in particular to a gear deburring device. The gear deburring device comprises a hollow base. A first rotation shaft and a second rotation shaft are arranged on the two sides of the base correspondingly. A plurality of same to-be-machined gears penetrate the first rotation shaft. Tooth grooves of the gears on the first rotation shaft are opposite in the longitudinal direction. The first rotation shaft is provided with a motor. A winding belt is wound around the second rotation shaft, and longitudinal strip-shaped grooves and transverse strip-shaped grooves are evenly formed in the winding belt and divide the winding belt into the grid shape. Air bags are arranged in grids on the winding belt and externally provided with elastic fine abrasive paper. A hollow interlayer is arranged on the winding belt. One-way air inlet holes communicating with the hollow interlayer are formed in the connecting positions of the air bags and the winding belt. The hollow interlayer of the winding belt is connected with an air blower. The lower end of the second rotation shaft is connected with an air cylinder. The problems that the process of deburring between teeth of the gears is not uniform, consequently, dull polish patterns exist between the gears obtained after being deburred, and the tooth profile of the gears is damaged are solved.

The invention discloses a skylight-type condom, which comprises a condom body made from elastic materials and provided with a closed end and an open end, and a reservoir tip at the top of the closed end of the condom body, wherein the condom body is divided from the middle to front a front condom body section with the closed end and a rear condom body section with the open end; the front condom body section and the rear condom body section are integrated through at least two connecting ribs; the connecting ribs and the edge of the divided part of the condom body form an exposed hole; and a blockage ring integrated with the front condom body section is arranged in the front condom body section. The skylight-type condo adopts, a simple and smart sectional design, and the front condom body section and the rear condom body section are integrated by the connecting ribs, so that a penis nerve sensitive area is maximally exposed at the local part of the condom body, and the real sexual pleasure of a man is enhanced; and meanwhile, the membrane-type blockage ring is arranged in the front condom body section, and a blockage area is formed near the closed end of the condom body and the reservoir tip, so that seminal fluid can be limited in the area and is effectively prevented from flowing backwards and leaking out.

The invention provides a humidifying structure, an indoor unit and an air conditioner unit. The humidifying structure comprises a fixing plate, a cover plate, a water inlet pipe and a humidifying assembly. According to the humidifying structure, the indoor unit and the air conditioner unit, the cover plate is simply dismounted and mounted on the fixing plate during mounting and repairing, and a water inlet pipe and a water returning pipe can be dismounted and mounted after dismounting the cover plate, and thus the operation step of removing the whole humidifying structure and then replacing apipeline in a traditional dismounting and mounting process is avoided; water pipes in a machine body are kept in inclination structures, so that water cannot flow out of the machine body under the gravity effect in case of water leaking in a connector, and the arraignment of the water pipes in the unit; connecting end ports are prevented from being stressed to cause water leaking; the humidifyingassembly is arranged in the humidifying space and is capable of effectively preventing large water droplets from being directly blown out of the unit or cause potential risk of water leaking; and water from all water outlet positions of a heat exchanger and the humidifying structure can be borne, and thus the problem of water leaking of the indoor unit is avoided.

The invention provides a tapered jet foam sol generating device for controlling coal dust at a transferring point of a conveyor belt. The device comprises a foam generating portion, a foam gelling portion and a foam sol outlet portion. The foam generating portion is composed of a water inlet pipe, an air inlet pipe, a negative pressure adder, a surfactant solution wrapper and mixers, the foam gelling portion is composed of a gelling device, a nozzle and an adhesive wrapper, and the foam sol outlet portion is composed of a diffuser, wherein the diffuser is tapered, and an included angle formed by the side wall of the diffuser and a tapered bottom in the horizontal direction can be adjusted within a range from 30 degrees to 60 degrees. A surfactant is sucked in by the negative pressure formed at a throat portion by the negative pressure adder; mixers are evenly distributed on a shaft through axial long and short plates alternately to mix gases and liquids fully; a compressed gas which is shunted by an air compressor serves as the motive power, and an adhesive is sprayed onto a foam body evenly through the nozzle; and the diffuser is used for connection, a foam sol is jetted to a usage point in a conical shape, and economical and efficient dust prevention is achieved.

The invention discloses a high-efficiency wall painting device. The high-efficiency wall painting device comprises a bottom plate; above the bottom plate is provided with a mixing machine, a first support and a second support; a first reducing motor is connected with the second support through a first reducing motor fixing rack; one side of the second support is provided with a conveying barrel fixing rack, one side of the conveying barrel fixing rack is connected with a conveying barrel, the discharging port of the conveying barrel is connected with a discharging hole, and one end of the discharging hose is connected with a jet nozzle; a moving frame is arranged between the first support and the second support and provided with a moving frame rack, the middle of the moving frame is provided with an incomplete gear which is provided with a driving wheel, the driving wheel is connected with a driven wheel through a transmission belt, the moving frame is provided with a moving frame connecting rod which is provided with a limiting block, and one end of the moving frame connecting rod is provided with a roller. The high-efficiency wall painting device can complete a series of operations such as material mixing, conveying and painting.

The invention relates to the technical field of boiler dust cleaning equipment, in particular to a mixed ignition device for a shock wave dust cleaning system. The shock wave dust cleaning system comprises a dust cleaning control device, an air source supplying device and a plurality of shock wave generating devices, wherein the air source supply device comprises a first fuel gas pipeline, a firstair pipeline and a first wiring terminal box; the mixed ignition device comprises a second fuel gas pipeline, a second air pipeline, a mixing tank, n mixed gas pipelines, a second wiring terminal box, an ignition control box and an ignition head, wherein the mixed gas outlet of the mixing tank is connected with the n mixed gas pipelines, and a first manual valve and a normally-open electric control valve are sequentially arranged on each mixed gas pipeline; and the mixed gas pipelines are connected with the shock wave generating devices in a one-to-one correspondence mode. The gas shock wavedust cleaning system solves the problem that an existing gas shock wave dust cleaning system has the serious equipment corrosion in the use of corrosive flue gas boilers such as waste incineration andthe like, and has the advantages of being complex in configuration structure, high in operation failure rate, low in operation efficiency and the like.

The invention relates to a throat drug application device, in particular to a handheld throat drug application device, and aims at providing the handheld throat drug application device which is capable of adjusting the drug spraying amount and the drug spraying angle and replacing a spray nozzle. According to the technical scheme, the handheld throat drug application device includes a mounting rack, an arc block, a swing bar, a hard water pipe, a spray nozzle, a first return spring, a cover plate, a convex block, a flexible pipe, a first one-way valve, a fixing plate, a water containing bag and the like; the mounting rack is placed at the top of a frame, the arc block is arranged at the middle of the top of the interior of the mounting rack, the swing bar is rotatably arranged at the frontside of the arc block, and the hard water pipe is connected to the left end of the swing bar and is located at the front side of the mounting rack. According to the handheld throat drug application device, by arranging the swing bar, the spray nozzle can swing up and down, and therefore people can spray drug to the throat in all directions; by arranging the convex block, the spray nozzle can be fixed and can be replaced, and bacterial infection is avoided; by arranging a plug, people can adjust the drug spraying amount of the spray nozzle.

The invention provides a dredger of an improved structure and belongs to the technical field of ships. The dredger of the improved structure comprises a ship body and a silt suction pump, an inlet of the silt suction pump communicates with one end of a silt suction main pipe, and a silt collection device is arranged at the other end of the silt suction main pipe. The silt collection device comprises a bypass pipe, two silt collecting wheels and driving devices driving the silt collecting wheels to rotate. The bypass pipe is bent, the two ends of the bypass pipe communicate with the silt suction main pipe, the upper end and the lower end of the bypass pipe are located between an inlet and an outlet of the silt suction main pipe, first one-way valve plates are arranged at the upper end port and the lower end port of the bypass pipe, a piston is connected into the silt suction main pipe in a sliding mode, a piston rod of the piston downwards extends out of the silt suction main pipe, the piston and the two silt collecting wheels are connected through a transmission mechanism which can make the piston rod rotate in a reciprocating mode along with the two silt collecting wheels, a second one-way valve plate is arranged at the inlet of the silt suction main pipe, an energy dissipation box is arranged in a silt bin, and a silt discharge pipe communicates with the energy dissipation box. The dredger has the advantages of being easy to control, more reliable in work and the like.

The invention relates to spraying apparatus, and particularly relates to disinfectant powder spraying apparatus for aquaculture. The technical problem to be solved is to provide disinfectant powder spraying apparatus for aquaculture, and the disinfectant powder spraying apparatus can uniformly spray disinfectant powder out and can spray the disinfectant powder into a cultivation pond more uniformly. The technical scheme is as follows: the disinfectant powder spraying apparatus for aquaculture comprises a box body, supporting legs, an L-shaped plate, an air pump, one-way valves, an air inlet pipe and the like; the four corners of the bottom of the box body are each provided with one supporting leg; the L-shaped plate is arranged on the right part of the bottom of the box body; the air pumpis arranged in the L-shaped plate; the left side and the right side of the box body are both provided with the one-way valves; the two one-way valves both communicate with the box body; and the air inlet pipe is hermetically connected with the air pump. According to the invention, a discharging pipe is driven to swing through a swinging device, so that the disinfection powder is sprayed more evenly; the discharging is carried out quantitatively through a discharging device; and through the arrangement of an angle adjusting device, the spraying angle of the disinfection powder can be adjusted,so that the effect that the disinfectant powder can be uniformly sprayed out and can be sprayed into the cultivation pond more uniformly is achieved.

The invention provides a low-emission environment-friendly vehicle-mounted hydrogen production device and a control method. The vehicle-mounted hydrogen production device comprises an engine storage battery, a hydrogen and oxygen production machine, a hydrogen and oxygen production machine switch relay, a hydrogen and oxygen storage system and an electronic control unit. The electronic control unit is connected with the storage battery which is connected to the hydrogen and oxygen production machine through the hydrogen and oxygen production machine switch relay, and the hydrogen and oxygen storage system is connected to the hydrogen and oxygen production machine. The online hydrogen production and storage and hydrogen-oxygen mixture supply system suitable of vehicles is provided to solve the problems that hydrogen infrastructure construction is not enough, hydrogenation is difficult and hydrogen and oxygen storage is hard to achieve through existing hydrogen production systems. Hydrogen and oxygen storage pressure is low (about 3 bar), the strength of a hydrogen and oxygen storage tank can be greatly reduced compared with a traditional automotive high-pressure hydrogen and oxygen storage tank, the weight and manufacturing cost of a hydrogen production system are reduced, and economy and system practicability of a whole vehicle can be conveniently improved.

The invention discloses a marine compressed air supply integrated module. A stop valve, an air-water separator, an air filter, an air dryer and another stop valve are sequentially arranged on the left-to-right pipeline of a first purifying assembly; a second purifying assembly adopts the same components and connecting sequence as the first purifying assembly; a first collecting device and a secondcollecting device are connected with the right side of the first purifying assembly through the pipeline; a stop check valve and an air bottle are sequentially arranged on the left-to-right pipelineof the first collecting device; the second collecting device adopts the same components and connecting sequence as the first collecting device; the stop valve is connected with the right side of the first collecting device through the pipeline; the stop valve, a reducing valve, the stop valve, a pressure gage and a safety valve are sequentially connected with the right side of the second collecting device through the pipeline; a pressure sensor is arranged between two air outlet pipelines of the air bottle; and the pressure sensor is in signal connection onto an air compressor.

The invention relates to an electric planer with a heat dissipation function. The electric planer comprises a shell, a motor structure, a cutter body structure, an air channel and fans. The motor structure and the cutter body structure are arranged in a cavity A and a cavity B of the shell through a shaft A and a shaft B correspondingly, wherein the shaft A and the shaft B are parallel to each other. The motor structure and the cutter body structure are connected through a belt wheel. The fans are fixed between the cavity A and the cavity B and communicate with the cavity A or the cavity B through the air channel. The fans are fixed to the shell through a shaft C parallel to the shaft A. The fans comprise the fan A located at the left end of the shaft and the fan B located at the right end of the shaft. The fan A is connected with the cavity A through the air channel, and the fan B is connected with the cavity B through the air channel. The electric planer has the beneficial effects that according to the electric planer with the heat dissipation function, the fans are mounted through the third shaft, the number of the fans is two, the fans can operate independently, and the cutter body structure and the motor structure can be subjected to heat dissipation at the same time.

The invention relates to a conveying pipe, in particular to an inverted tooth gravel conveying pipe. The conveying pipe comprises a pipeline steel substrate, a metal alloy transition layer and superhard material particles, wherein the metal alloy transition layer and the superhard material particles are arranged on an internal wall of the pipeline steel substrate; metal inverted teeth are fixed on the pipeline steel substrate; tooth tips of the metal inverted teeth face an outlet of the conveying pipe; the metal inverted teeth are high manganese steel inverted teeth; the conveying pipe can prevent sundries flowing in the pipe from backflow, so that the working efficiency of dredging is higher.

The invention discloses an agricultural fertilizer distributor and belongs to the field of fertilizer distributors. The agricultural fertilizer distributor comprises a distributor body, a driving boxis fixedly connected to the distributor body, and a blade is connected to the driving end of the driving box; a piston box is further fixedly connected to the inner wall of the bottom of the distributor body and connected with a water tank through a first connection pipe, a second connection pipe is fixedly connected to the side wall of the piston box, a water conveying pipe is fixedly connected to the end, away from the piston box, of the second connection pipe, and a fertilizer box is connected with a discharging pipe through a quantitation mechanism. According to the agricultural fertilizerdistributor, a water source in the water tank is pumped through the piston box, the pumped water flows into the piston box through the first connection pipe, water flowing into the piston box can flow into the water conveying pipe through the second connection pipe which is fixedly connected with the side wall of the piston box and accordingly flows out through a water outlet pipe, fertilizer inthe fertilizer box is quantitatively discharged through the quantitation mechanism and discharged through the discharging pipe, watering and fertilization are conducted while weeding is conducted, thelabor is saved, and the working efficiency is improved.

The invention discloses a drainer with a heat recovery function, and belongs to the technical field of waste heat recovery devices. The drainer comprises an outer cylinder, wherein the top of the outer cylinder is buckled with a cylinder cover, the cylinder cover is coaxially connected with an isolation pipe, the isolation pipe sequentially divides the inner space of the outer cylinder from outside to inside into an outer water tank and an inner water tank, the cylinder cover is further provided with a water inlet communicating with the outer water tank, the outer water tank is provided with afirst coil pipe, the inner water tank is provided with a second coil pipe communicating with the first coil pipe end to end, the bottom of the outer cylinder is provided with a drain outlet communicating with the inner water tank, and the drain outlet is coaxially and detachably connected with a drain pipe extending into the inner water tank. By arranging the detachable cylinder cover and the drain pipe, the outer cylinder, the inner cylinder, the first coil pipe and the second coil pipe can be conveniently cleaned, and long-term cleaning and high-efficiency heat absorption efficiency can bemaintained.

The invention discloses a suction tube device used for orthopedic surgery. The suction tube device used for the orthopedic surgery comprises a suction tube and a negative-pressure tube, wherein the suction tube is connected with a suction apparatus head; the negative-pressure tube is connected with a negative-pressure bottle; a filter cavity is connected between the suction tube and the negative-pressure tube. The filter cavity consists of a filter screen cavity and a fragment storage cavity, wherein the opening of the filter screen cavity and the opening of the fragment storage cavity are connected with each other, and the filter screen cavity and the fragment storage cavity are respectively made of a transparent rubber material or plastic; the filter screen cavity is connected with the negative-pressure tube; a filter screen is arranged in the filter screen cavity; a conduit is arranged in the fragment storage cavity; the conduit extends from exterior of the bottom part of the fragment storage cavity to the outer end of the opening of the fragment storage cavity; and the suction tube is connected with one end of the conduit, which is located outside the bottom part of the fragment storage cavity. Thus, on one hand, blocking cannot be generated in the suction tube and the suction apparatus head, and bone fragments can be stored in the fragment storage cavity, and meanwhile, on the other hand, the fragments in the fragment storage cavity can be conveniently poured out; blood cannot flow back to the suction tube, and thereby, complications are effectively prevented from occurring.

The invention relates to the technical field of disks for internet block chain technology research and development, and discloses an automatic ash removal and storage disk for internet block chain technology research and development, which comprises a disk shell, an air inlet arc groove and an air outlet pipe groove are formed in the lower side of the interior of the disk shell in a surrounding manner, and an air bag is connected to the inner side end of a sliding frame; a force storage rod is connected to the inner side end of the sliding frame and located in the air bag, and a blocking column is connected to the position, below the inner side end of the force storage rod, in the magnetic disc shell. The air bag is cooled and contracted, a trapezoidal surface is arranged on the lower sideof the right end of the force storage rod, and the left inclination angle of the trapezoidal surface is smaller than the right inclination angle of the trapezoidal surface, so that the force storagerod is subjected to force storage through the interaction of the right inclination surface and the blocking column; and when the air bag contracts to a certain degree, the lower part of the force storage rod crosses the blocking column to quickly contract. Dust sinking from the disk shell is cleaned through the air inlet arc-shaped groove, and the structure solves the problems that dust is accumulated for a long time, and a magnetic head and a disk are prone to damage in an existing storage disk for the block chain.

The invention provides a gear shaft for an automobile steering device. The gear shaft for the automobile steering device comprises a steering device body (1) and a gear shaft body (2), wherein the gear shaft body (2) comprises a transmission part (21) arranged inside an inner cavity (3) of the steering device body (1) and an extending part (22) extending out of the inner cavity (3), the extendingpart (22) is connected with a steering wheel, the transmission part (21) is provided with a tooth face (23) matched with a toothed bar (4), and the inner cavity (3) is sealed and filled with lubricating oil. According to the gear shaft for the automobile steering device, the steering device inner cavity is filled with enough lubricating oil, and engaging between the gear shaft and the toothed baris made to be sufficiently lubricated.

The invention relates to a locomotive anti-freezing solution spraying device and a spraying system thereof. The locomotive anti-freezing solution spraying device comprises a supporting frame and a spraying mechanism arranged on the supporting frame. The supporting frame comprises two stand columns used for being installed on the two sides of a rail, and a cross beam detachably connected onto the two stand columns in a chained mode. The spraying mechanism comprises a spraying pipe detachably connected onto the cross beam, a plurality of spraying heads arranged on the spraying pipe and providedwith downward spraying openings, two liquid storage tanks arranged on the two stand columns respectively, a conveying pipeline communicating the two liquid storage tanks with the spraying pipe, and awater suction pump arranged on the conveying pipeline. The conveying pipeline is detachably connected with the supporting frame. The locomotive anti-freezing solution spraying device provided by the invention has the effects of being convenient to build and high in construction efficiency.

The invention provides a disposable infusion pump. The disposable infusion pump comprises a liquid storage column, a one-way valve medicine infusion tee joint, an infusion guide tube, a flow stopping clip and a piston, wherein an opening in the lower end of the liquid storage column is connected with the one-way valve medicine infusion tee joint, the one-way valve medicine infusion tee joint is connected with the infusion guide tube, the flow stopping clip is arranged on the infusion guide tube and is arranged at the near end of the one-way valve medicine infusion tee joint, and the piston is arranged on the bottom of the interior of the liquid storage column. The disposable infusion pump is simple in structure, convenient to operate, safe, reliable, and low in manufacturing cost.

The invention discloses a condom with a hoop, belongs to articles for family planning and solves the problem that semen flows back to cause discomfort after ejaculation of men and condoms slip off in female vagina to cause unplanned pregnancy due to unreasonable structure of existing condoms. The condom with the hoop comprises a condom body and a semen storage bag, wherein the condom body made of elastic materials is provided with a closed end and an open end, and the semen storage bag is arranged at the top of the closed end of the condom body. The hoop integrated with the condom body is arranged at a position of the closed end of the condom body 10-35mm distant from the semen storage bag. The condom with the hoop is simple and skillful in design, the hoop in film type is arranged at the closed end of the condom body, so that an isolation area is formed near the semen storage bag, semen can be limited in the isolation area and is prevented from flowing backwards, cleaning comfort of man penis without backflow semen is enhanced, and possibility that the condom body is easy to slip off in the female vagina by lubricating of the backflow semen is avoided.

The invention discloses an electromagnetic heating ceramic film drying device. The device comprises a drying box; an insulation layer is arranged on the inner side of the drying box; an electromagnetic pipe is arranged on the inner side of the insulation layer; an electric fan is arranged at the bottom of the drying box; the bottom of the electric fan is connected with a heat supply pipe; the heatsupply pipe is connected with an insulation box air outlet; the insulation layer is arranged on the inner side of the drying box; a condensation plate is arranged on one side of the insulation layer;the top of the drying box is connected with a steam exhaust pipe; one end of the steam exhaust pipe is connected with an insulation box air inlet; and a controller is arranged on one side of the drying box. As the electromagnetic pipe is arranged in the drying box, an induction coil is not directly contacted with a heated object, and energy is transferred through electromagnetic induction; and compared with a resistance wire heating mode, the loss in heat transfer and air heat convection is reduced, the heating is fast, the heat efficiency is high, and the energy saving effect is excellent.