52results about How to "Normal ventilation" patented technology

A penetration-crystallization type cement-base water-proof material for building is prepared from silicate cement, sodium methyl naphthalenesulfonate condensate, water silane emulsion, dodecahydrated aluminium potassium sulfate, magnesium hydroxide, calcium hydroxide, sodium silicate, bentone and quartz sand through proportional mixing. Its advantages are high penetrability and crystallinity, permanent water-proof effect, and self-repairing of fine cracking.

The invention discloses an outdoor machine cabinet with dampproof ventilation openings. The outdoor machine cabinet comprises a cabinet body, a plurality of ventilation openings are formed in the cabinet body, the ventilation openings are rotatably connected with a plurality of plates, extending rods are arranged at the position, facing the inner side of the cabinet body, of the plates, the extending rods are rotatably connected with a drying plate, the drying plate comprises a cavity defined by metal wire meshes, the cavity is filled with drying agents, a containing groove is formed in the at the position, on the outer side of the cabinet body, of at least one plate, an opening of the containing groove is upward, and a limiting plate is arranged on the portion, below the drying plate, of the cabinet body. The ventilation openings of the outdoor machine cabinet can be closed automatically in the environment of rainy days, dampness is prevented from entering the cabinet body, and the problem that internal components are corroded and damaged due to the fact that damp air enters the cabinet body is solved.

The invention belongs to the field of medical equipment, and particularly relates to a novel trachea cannula. The novel trachea cannula comprises a cannula body, a balloon and a balloon inflation connecting pipe; the lower end of the balloon inflation connecting pipe is communicated with the balloon, the upper end of the balloon inflation connecting pipe is connected with a balloon inflation device, a strip-shaped groove is formed along the outer wall of the cannula body, and the balloon inflation connecting pipe is embedded in the strip-shaped groove; an annular groove is formed in the lower section of the cannula body, and the balloon is fixed in the annular groove. According to the novel trachea cannula, visual operation of the trachea cannula is achieved, and meanwhile it is guaranteed that a camera device is used repeatedly; insertion of the trachea cannula is safe, and the probability of disengagement of a gular cartilage and damage of the inner wall of a respiratory tract is reduced; collapse and bending of the trachea cannula body at the meshing part are prevented; oxygen supply is not interfered with surgical operation.

A penetration-crystallization type cement-base water-proof material for building is prepared from silicate cement, sodium methyl naphthalenesulfonate condensate, water silane emulsion, dodecahydrated aluminium potassium sulfate, magnesium hydroxide, calcium hydroxide, sodium silicate, bentone and quartz sand through proportional mixing. Its advantages are high penetrability and crystallinity, permanent water-proof effect, and self-repairing of fine cracking.

The invention discloses a back-pull self-centering hydraulic clamp capable of inspecting airtightness. The back-pull self-centering hydraulic clamp comprises a pull rod, a Morse cone, a nut, an expansion body, a support body, connecting bolts, a piston disc, a piston, an expansion bushing, a positioning block, etc., wherein an oil path system is arranged in the support body and the expansion body;an airtight hole is formed in the end, of the pull rod, near the expansion body; an airtight channel is formed in the position, on the Morse cone, corresponding to the position of the airtight hole,runs through the expansion body, the support body and the expansion bushing in sequence, and extends to a surface in contact with a workpiece; and the airtight channel is staggered with the oil path system. The self-centering of the hydraulic clamp can be achieved; the centering accuracy of the Morse cone is copied to the clamp to better ensure the high and stable positioning accuracy of the clamp; the airtightness of the surface, of the clamp, contacting and positioning the workpiece, can be inspected; and whether the workpiece is mounted wrongly or not can be determined to a certain extent to achieve an error-proofing function of the clamp.

A pressure releasing automatic reset air shaft anti-explosion cover relates to the field of ventilating safety of a coal mine and comprises a well lid arranged on a well mouth; at least two guide sleeves are connected to the outer peripheral edge of the well lid; a guide pillar is arranged in each guide sleeve in a penetrating mode; an elastic limiting block is arranged at the top end of each guide pillar; an upright pillar and a pressure releasing device are connected to the middle above the well lid; each pressure releasing device is respectively connected with a locking mechanism and comprises a pressure releasing drum; a cover door is hinged above each pressure releasing drum; an air spring is hinged into each pressure releasing drum; the telescopic end of each air spring is hinged to the inside of the corresponding cover door; the air springs are hinged onto the upright pillar; the telescopic end of each air spring is respectively hinged to the outside of the corresponding cover door; at least two hydraulic lifting machines are connected below the well lid; travel switches are connected onto the upright pillar; when being opened, each cover door makes contact with the corresponding travel switch and the hydraulic lifting machines are started to work. The pressure releasing automatic reset air shaft anti-explosion cover is safe and reliable.

The invention relates to the technical field of medical devices, and specifically relates to a multichannel oropharyngeal ventilator for anesthesiology department. The multichannel oropharyngeal ventilator for the anesthesiology department comprises an arcuate fixing cover, a ventilation pipe, a gas injection pipe, an air purification film, a conical liquid reservoir, an arc plate, ear-hangings, ahose, a tongue pressing plate and an arc transverse plate; the ventilation pipe transversely penetrates through the middle of the arcuate fixing cover; connecting caps formed with threads on inner walls are arranged at both the front end and the rear end of the ventilation pipe; the air purification film is arranged at where the connecting cap arranged at the front contacts with the gas injectionpipe; soft branch pipes and a connecting pipe are arranged at the front of the ventilation pipe; and the bottom of the connecting pipe is in threaded connection with the conical liquid reservoir. Themultichannel oropharyngeal ventilator for the anesthesiology department is capable of avoiding the phenomenon of occlusion of the ventilation pipe by teeth of a patient during long-time ventilation,so that, normal ventilation is ensured. Moreover, various operations, such as gastric intubation, sputum aspiration and the like, can be performed by the same apparatus; and aspirated sputum can alsobe collected. In addition, air breathed out by the patient can be purified by the arranged air purification film so as to reduce influence of air impurities on patient health.

The invention relates to a protective mask with a detachable filter tip. The mask comprises a mask body, ear bands are symmetrically arranged at the two ends of the mask body. A breathing layer is arranged in the middle of the mask body; the outer surface of the mask body is covered with a breathing layer and provided with a filter tip device, the inner surface, corresponding to the filter tip device, of the mask body is provided with an annularly-sealed breathing cavity in a protruding mode, the filter tip device comprises a filter tip fixing frame and a filter tip groove cover, and a plurality of mask filter elements are arranged in the filter tip groove cover and surround the breathing layer to be integrally formed with the mask body. The replaceable mask filter element is only arrangedin the middle of the mask body and is formed by combining and processing one or more of the activated carbon fiber layer, the cotton bamboo fiber layer, the polymer fiber layer, the acupuncture cotton layer, the melt-blown fabric layer and the non-woven fabric layer, the mask filter element can be replaced according to different occasions, and the application range is wide; the protruding breathing cavity is formed in the inner surface of the mask body and can be tightly attached to the face, and the situations of local air leakage and poor filtering effect caused by insufficient sealing performance of a traditional mask are avoided.

The invention discloses a screen window with the function of purifying air, which comprises a window frame 1 and a window screen net. The window screen net includes an inner net and an outer net. On the one hand, the outer mesh is a stainless steel wire mesh, and the inner mesh includes a fiber membrane layer and an activated carbon layer, and the activated carbon layer is arranged between the fiber membrane layer and the outer mesh. As an improvement of the above solution, the window screen of the present invention also includes a ventilation fan located on the outer side of the outer net and a wind speed sensor located on the side of the inner net of the window screen. In addition to preventing mosquitoes, the screen window of the invention can also prevent large particles of dust and even PM2.5 particles, so as to achieve the purpose of purifying the air.

The invention relates to the technical field of peanut kernel processing equipment, in particular to a seed coat removing device for dried peanut kernels. The to-be-solved technical problems are thatthe removal of seed coats of the dried peanut kernels is not thorough, and the peanut kernels cannot be screened conveniently. In order to solve the technical problems, the invention provides the seedcoat removing device for dried peanut kernels. The device comprises a box body, supporting legs are fixedly connected to the four right angle portions of the bottom of the box body, and a reverse-scraping mechanism is arranged in the box body; a feeding inlet of the reverse-scraping mechanism penetrates through the top of the box body and extends to the position on the box body, a chip absorbingmechanism is arranged in the box body, and feeding inlets in the two sides of the chip absorbing mechanism are respectively communicated with the two sides of the reverse-scraping mechanism. When a friction plate moves on an oblique surface leftward and rightward, protrusions arranged at the bottom of the device can be driven to rub the seed coats on the surfaces of the peanut kernels, the friction plate cooperatively meshed with the protrusions can further increase the stressed area and friction resistance of the peanut kernels, and therefore the seed coats on the surfaces of the peanut kernels can be removed thoroughly.

The invention discloses a computer operation environment automatic adjustment system based on data acquisition. The system comprises sensors, a ventilation unit, an air conditioner, a central controller, an alarm, an illumination module, an access control unit, a server, a wireless module, a camera collector and a UPS power supply, and the sensors comprise a wind pressure sensor, a flame sensor, awater immersion sensor, a human body infrared sensor, a temperature and humidity sensor and a smoke sensor. Beneficial effects of the system are that corresponding processing is performed according to different operation environment problems; a corresponding prompt instruction is generated and sent to the server; and problems of shot videos are classified according to different starting signals,video calling is facilitated, and when a wind pressure intensity value, a fire source information value, a surface accumulated water information value, a human body monitoring induction value, a temperature and humidity value and a smoke concentration value are not equal to corresponding preset values, all lighting modules can be lightened so that video quality is improved, and more detail contents of the videos are obtained.

The invention discloses a straw boiler capable of removing coke in a furnace body, and belongs to the technical field of straw furnaces. The furnace body is a cylindrical barrel with a sealed cover atthe upper end and the lower end, a rotary type fire grate capable of rotating is arranged between the feeding hole and the air supply blower in the furnace body, the middle of the rotary type fire grate is communicated with the ash removal opening, a furnace slag crushing device is fixed above the rotary type fire grate in the furnace body, a straw breaking device is arranged on the inner wall ofthe hearth above the slag crushing device, the straw bag is conveyed into the furnace body through a feeding hole in the side wall of the furnace body, the rotated rotary fire grate drives the strawbag to move, the driven straw bag collides with the straw bag breaking device, the bundled bundle belt is broken, the bag body is more fully combusted after the bag body is unfolded, after the rotaryfire grate rotates, the movable fire grate and the slag crushing device fixed in the furnace body realize relative movement, so that coking on the upper portion of the fire grate is removed, and the coke is discharged from the ash removal opening.

The invention discloses an electromagnetically-shielding sound-insulating protecting window applicable to an electromagnetically-shielded room and aims to provide the electromagnetically-shielding sound-insulating protecting window which is reasonable in structure, excellent in performance and applicable to the electromagnetically-shielded room. The window comprises a cut-off waveguide ventilating window and an electromagnetically-shielding door with dimensions matched with those of the cut-off waveguide ventilating window, wherein the electromagnetically-shielding door is installed on the outer side or the inner side of the cut-off waveguide ventilating window and combined with the cut-off waveguide ventilating window for use. The cut-off waveguide ventilating window and the electromagnetically-shielding door are different in electromagnetic shielding principle, so that the better electromagnetic shielding effect can be realized when the cut-off waveguide ventilating window and the electromagnetically-shielding door are combined for use; the electromagnetically-shielding sound-insulating protecting window is modified on the basis of an electromagnetically-shielding door which is usually very thick and heavy, so that the better sound-insulating effect can be realized; the electromagnetically-shielding door can be opened and closed, so that the cut-off waveguide ventilating window has the flexible ventilation performance. In short, compared with the prior art, the electromagnetically-shielding sound-insulating protecting window has the advantages of simple structure, small size, convenience in use and low cost.

The invention provides a large-span underground engineering structure ceiling outer hanging type fireproof plate and an installing method thereof, and belongs to the field of underground engineering disaster prevention. The outer hanging type fireproof plate comprises a fireproof plate layer, inter-plate connecting pieces, an installing hanging frame, a building ceiling and an air heat preservation partition layer. The fireproof plate layer comprises a rock wool plate layer, a fiber plate layer and a fireproof rubber plate layer. The fireproof plate layer is connected with the building ceilingthrough the installing hanging frame, the lower portion of the installing hanging frame is embedded in the fireproof plate layer, and the installing hanging frame and the fireproof plate layer are sequentially connected and fixed in a segmented manner. The air heat preservation partition layer on the inner side of the outer hanging type fireproof plate is cut off through a fireproof plate hangingframe body into small partition layer branch cavities, the convection phenomenon caused by heated air during the fire disaster is prevented, and damage to the underground engineering structure ceiling from the fire disaster is effectively reduced.

The invention discloses a noise elimination type electric closed rainproof blind window. A window frame is sequentially divided into a rainproof layer, a noise elimination layer and a wind amount adjusting layer in sequence from an air inlet end to an air outlet end, a top cover bin is mounted on the top end in the noise elimination layer of the window frame, a bottom cover bin is mounted at the bottom in the noise elimination layer of the window frame, rainproof louvre blades are evenly mounted in the rainproof layer of the window frame, noise elimination louvre blades are evenly mounted in the noise elimination layer of the window frame, electric adjusting louvre blades are evenly mounted in the wind amount adjusting layer of the window frame, a conical gear A is mounted at the end, located in a wide side plate, of a transverse shaft rod, an executor is mounted on the bottom end of the wide side plate, the output end of the executor is provided with a conical gear B, a longitudinal shaft rod is longitudinally mounted in the wide side plate, a conical gear C is mounted on the bottom end of the longitudinal shaft rod, and multiple conical gears D are evenly mounted on the longitudinal shaft rod. The structure is reasonable, the noise elimination louvre blades are arranged and have the good noise elimination function, meanwhile, the good waterproof effect is achieved, and the wind amount magnitude can be controlled.

The invention discloses a superstrong deeply capillary crystalline waterproof material and belongs to the technical field of waterproof materials. The superstrong deeply capillary crystalline waterproof material comprises the following components in percentage by weight: 42-50% of silicate cement, 1-5% of sodium methyl naphthalene sulphonate condensate, 7-10% of siloxane, 6-10% of calcium hydroxide, 10-15% of bentonite, 28-40% of quartz sand and 6-12% of aluminium potassium sulphate dodecahydrate. A preparation method of the superstrong deeply capillary crystalline waterproof material comprises the following steps: adding siloxane into bentonite, uniformly stirring, and then drying slurry; grinding the dried slurry into powder of 150-220 meshes generally in a ball grinding mill, then adding surface active dispersing agents, namely sodium methyl naphthalene sulphonate condensate and quartz sand, stirring for forming aggregates, and finally adding silicate cement, sodium silicate, aluminium potassium sulphate dodecahydrate and calcium hydroxide, so that the superstrong deeply capillary crystalline waterproof material finished product is obtained. The superstrong deeply capillary crystalline waterproof material can maintain respiratory action of a building, unique acicular crystals are generated and can fill and block cracks and holes of concrete, water seepage is prevented, waterproof effect is permanent, and no toxicity or pollution is produced.

The invention discloses a novel building fresh air system. The novel building fresh air system comprises a fresh air inlet, a fresh air draught fan, a fresh air supply port, a lower exhaust port, an exhaust draught fan, an exhaust lower transverse pipe, an exhaust flow dividing pipe, exhaust vertical pipes, an exhaust flow gathering pipe, an exhaust upper outlet, an exhaust upper transverse pipe,a habitable room, a first outer wall and a second outer wall. An exhaust system is arranged in the outer walls and can conduct same-way type balanced exhaust heat exchange, the cooling capability of the indoor exhaust air in summer and heat of the indoor exhaust air in winter can be sufficiently utilized, a total heat exchanger does not need to be installed, and air resistance and draught fan energy consumption are effectively reduced. The structure is simple, maintenance is convenient, the service life is long, the cost and running expense are low, and application and popularization are facilitated.

The invention relates to the technical field of electronic cigarettes, in particular to an anti-blocking electronic cigarette, which includes a tube body, a power supply device is arranged in the tube body, and a ventilation structure communicating with the atomizer is arranged on the side wall of the tube body. The end of the tube body is connected with an atomizer, the end of the atomizer is connected with a suction nozzle, and the ventilation structure includes no less than one vent hole opened on the side wall of the tube body, and the vent hole and The atomizer is connected, and an insertion rod is inserted into the air hole, and a driving mechanism for driving the insertion rod to insert and disengage from the air hole is arranged in the body of the tube. The invention also discloses an anti-clogging method for an anti-clogging electronic cigarette, which includes the following steps: S1. Installing a freely slidable insertion rod at the vent hole and a driving mechanism for driving the insertion rod to move; S2. When smoking, inserting The rod leaves the ventilation hole under the action of the driving mechanism; S3, when it is out of use, the insertion rod is inserted into the ventilation hole under the action of the driving mechanism. The invention can realize comprehensive anti-clogging.

The invention relates to the technical field of peanut kernel processing equipment, in particular to a seed coat removing device for dried peanut kernels. The to-be-solved technical problems are thatthe removal of seed coats of the dried peanut kernels is not thorough, and the peanut kernels cannot be screened conveniently. In order to solve the technical problems, the invention provides the seedcoat removing device for dried peanut kernels. The device comprises a box body, supporting legs are fixedly connected to the four right angle portions of the bottom of the box body, and a reverse-scraping mechanism is arranged in the box body; a feeding inlet of the reverse-scraping mechanism penetrates through the top of the box body and extends to the position on the box body, a chip absorbingmechanism is arranged in the box body, and feeding inlets in the two sides of the chip absorbing mechanism are respectively communicated with the two sides of the reverse-scraping mechanism. When a friction plate moves on an oblique surface leftward and rightward, protrusions arranged at the bottom of the device can be driven to rub the seed coats on the surfaces of the peanut kernels, the friction plate cooperatively meshed with the protrusions can further increase the stressed area and friction resistance of the peanut kernels, and therefore the seed coats on the surfaces of the peanut kernels can be removed thoroughly.

The invention provides a heat exchanger, a heating water circulating unit and a control method of the heating water circulating unit. The heat exchanger comprises a heat exchange pipe and heat exchange fins, the heat exchange fins are arranged on the heat exchange pipe in a penetrating mode, the number of the heat exchange fins is at least two, and the at least two heat exchange fins form a heat exchange fin set; and in every two adjacent heat exchange fin sets, the distance between the heat exchange fin, close to the second heat exchange fin set, in the first heat exchange fin set and the heat exchange fin, close to the first heat exchange fin set, in the second heat exchange fin set is gradually decreased in an airflow flowing direction, and the distance is the distance perpendicular tothe airflow flowing direction. The distance between the fins can be gradually reduced in the airflow flowing direction, the large fin distance is formed, the air speed is increased, the air volume isincreased, the heat exchange capacity of the heat exchange fins is improved, the defrosting capacity is improved, the large-temperature operation range of a multifunctional water heater can be effectively met, and the working condition application range is widened.

The invention provides a snow protection device and a vehicle and relates to the technical field of vehicles. The snow protection device is arranged in the position of an air inlet of an outer draughtfan of the vehicle and comprises sliding ways, a snow protection cover and drive assemblies, the sliding ways are arranged on a shell of the vehicle, the snow protection cover is arranged on the sliding ways in a sliding mode, the drive assemblies are arranged on the snow protection cover and used for driving the snow protection cover to slide along the sliding ways, and when sliding to a presetposition, the snow protection cover can shelter the air inlet. When the outer draught fan stops working, the drive assemblies drive the snow protection cover to slide towards the air inlet along the sliding ways for snow protection until the snow protection cover slides to the preset position and completely shelters the air inlet, and therefore snow is prevented from being accumulated in the position of the air inlet. When the outer draught fan needs to work, the drive assemblies drive the snow protection cover to slide in the reverse direction, the air inlet is exposed, and normal ventilationcan be conducted through the air inlet. By the adoption of the provided snow protection device, the air inlet can be sheltered when the outer draught fan stops working, and the situation that the snow is accumulated in the position of the air inlet and thus normal work of the outer draught fan is affected is prevented.

The invention discloses a high-transmittance, high-efficiency, sand-proof and rain-proof shutter. The high-transmittance, high-efficiency, sand-proof and rain-proof shutter comprises a flange frame; the flange frame consists of a lower end plate, an upper flange, a lower flange, a left flange and a right flange; a shielding device is arranged inside the flange frame; the shielding device comprisesan upper front positioning plate, an upper front inserting slot, an upper rear positioning plate, an upper rear inserting slot, a lower positioning plate, a lower front inserting slot, a lower rear inserting slot, a plurality of shutter sheets and a sewage outlet, wherein the upper front positioning plate is arranged at the front side of the internal top of the flange frame; the upper front inserting slot is arranged on the upper front positioning plate; the upper rear positioning plate is arranged at the rear side of the internal top of the flange frame and opposite to the upper front positioning plate; the upper rear inserting slot is arranged on the upper rear positioning plate; the lower positioning plate is arranged at the front side of the internal bottom of the flange frame and opposite to the upper front positioning plate; the lower front inserting slot is arranged on the lower positioning plate and corresponds to the upper front inserting slot in position; the lower rear inserting slot is arranged on the lower flange and corresponds to the upper front inserting slot in position; the tops of the shutter sheets are correspondingly inserted into the upper front inserting slot and the upper rear inserting slot; the bottoms of the shutter sheets are correspondingly inserted into the lower front inserting slot and the lower rear inserting slot; and the sewage outlet is arranged in front of the lower positioning plate and the lower flange.

The invention belongs to the technical field of clothes treatment, and provides washing and drying integrated equipment. The problem that peculiar smell is prone to being generated and even bacteria are prone breeding in an outer barrel and a window pad due to the fact that the outer cylinder and the window pad of existing washing and drying integrated equipment cannot be in air circulation with the outside is solved. The washing and drying integrated equipment comprises an outer barrel, a window pad, a fan and a drying air duct, an air inlet of the drying air duct communicates with the rear part of the outer barrel, and an air outlet of the drying air duct communicates with the upper part of the window pad; an air duct inner air door is arranged in the drying air duct, an air duct wall air door is arranged on the drying air duct, and a barrel wall air door is arranged on the upper part of the outer barrel; and the air duct inner air door can be opened / closed so that the interior of the drying air duct can be communicated / blocked, the air duct wall air door can be opened / closed so that the drying air duct can be communicated / blocked with the outside, and the barrel wall air door can be opened / closed so that the outer barrel can communicate with / be blocked with the outside. Ventilation of the washing and drying integrated equipment can be achieved, peculiar smells in the outer barrel and the window pad can be removed, bacterium breeding is avoided, and the user experience is improved.

The invention provides a storage battery protection system which comprises a gate assembly which comprises a gate body and a gate support which are oppositely arranged on the inner wall of a vent hole; the optical detection device comprises a first optical detection assembly and a second optical detection assembly which are arranged on the inner wall of the vent hole; and the gate driving device is in driving connection with the gate body and is in communication connection with the optical detection device, so that the gate body is controlled to be in contact with or away from the gate support according to the light receiving condition of the optical detection device. According to the scheme, when water enters the storage battery, the light transmittance between the first optical detection assemblies is reduced, the gate driving device drives the gate assembly to make contact with the gate support, and therefore the purpose of preventing water from entering the storage battery is achieved; and when too much gas is generated in the storage battery, the light transmittance between the second optical detection assemblies is reduced, and the gate driving device drives the gate assembly to be away from the gate support, so that the storage battery can exhaust the gas generated in the storage battery.

The invention discloses a computer operating environment automatic adjustment system based on data collection, including a sensor, a ventilation unit, an air conditioner, a central controller, an alarm, a lighting module, an access control unit, a server, a wireless module, a camera collector, and a UPS Power supply, sensors include wind pressure sensor, flame sensor, water immersion sensor, human body infrared sensor, temperature and humidity sensor, smoke sensor; the beneficial effect of the present invention is: do corresponding processing according to different operating environment problems, and will generate corresponding prompt instructions Send it to the server, classify the shooting video according to different start signals, so that the video can be retrieved conveniently, and when the wind pressure intensity value, fire source information value, ground water information value, human body monitoring sensor value, temperature and humidity value, smoke When the density values ​​are not equal to the corresponding preset values, all the lighting modules will be turned on to improve the quality of the video, and the details of the video will be more.

The invention relates to the field of medical equipment, in particular to a nasal septum hemostatic drainage device. The nasal septum hemostatic drainage device comprises an attraction unit and a highnegative pressure unit which are connected with each other; the attraction unit is provided with a one-way valve used for preventing air and blood from reversely entering the nasal septum cavity; thehigh negative pressure unit comprises a high negative pressure cylinder shell, a rubber coupling inner core and a compression spring, the rubber coupling inner core is coupled with the high negativepressure cylinder shell, and the rubber coupling inner core freely slides in the high negative pressure cylinder shell to form a closed cavity; and the compression spring is arranged between the rubber coupling inner core and the tail end of the high negative pressure cylinder shell. The nasal septum hemostatic drainage device not only can perform negative pressure drainage hemostasis by compression, prevent the hematoma formation, but also can promote wound healing, can also ensure the normal nasal ventilation, and solves the problem that nasal packing needs to be used for hemostasis after the nasal septum surgery in the past.

The invention discloses a feed formula for increasing the survival rate of pure blood and calf cattle and a feeding management scheme, the feed formula comprises the following ingredients: cold boiled water, boiled water and milk replacer, the ratio of the cold boiled water to the boiled water is 6: 8, the ratio of the milk replacer to the cold boiled water is 1: 1, the cold boiled water and the boiled water are blended, the temperature is controlled to be 45-50 DEG C after blending, the milk replacer is added after blending, stirring is performed, and the milk replacer is added after blending. The temperature is reduced to 38-39 DEG C; the umbilical cord of the calf is wrapped with the breathable protective cover, it is guaranteed that the periphery of the umbilical cord of the calf can be normally breathable, tissue around the umbilical cord is dried through gauze, it is guaranteed that the periphery of the umbilical cord can be kept dry, and the umbilical cord can be protected through the protective cover; oral cavities of the calves or other calves cannot make contact with the umbilical cord, the calves or other calves are prevented from sucking or licking the umbilical cord, the probability of omphalitis caused by sucking or licking is reduced, and healthy growth of the calves is guaranteed.