31results about How to "Good anti-backflow effect" patented technology

The invention discloses a humidifier. The humidifier comprises an upper box body and a lower box body. The lower box body is internally provided with an atomizing assembly, an inner cavity of the upper box body is divided into a mist outlet channel and a water storage chamber, the top face of the upper box body is provided with a mist outlet, the two ends of the mist outlet channel are communicated with the atomizing assembly and the mist outlet respectively in an airflow mode, a separation plate is arranged between the outer wall of the upper end of the mist outlet channel and the inner wall of the top end of the upper box body and concaved inwards to form a sewage chamber, the top end of the sewage chamber is provided with a medicine box, the inner side of the top face of the medicine box extends to cover the opening in the top end of the mist outlet channel, the side wall of the top end of the mist outlet channel is provided with an air outlet adjacent to the medicine box, the top end of the inner side wall of the medicine box is provided with an air inlet communicated with the air outlet, vent holes communicated with the mist outlet are evenly formed in the outer side of the top face of the medicine box, and liquid leakage holes are evenly formed in the bottom face of the medicine box. According to the humidifier, a guiding structure is arranged between the mist outlet channel and the medicine box, the water vapor can make full contact with the whole medicine box, materials in the medicine box can be fully utilized, the sewage chamber is arranged below the medicine box, and waste water can be effectively prevented from reversely flowing and corroding the atomizing assembly.

The invention discloses a rapid drainage device for ICU nursing, and relates to the technical field of ICU intensive care. The device comprises a collecting box. A drainage tube is connected to the upper end of the collecting box; a pulse anti-blocking device is arranged on the drainage tube; the upper end of the collecting box is provided with a pulse negative pressure device; the pulse negativepressure device comprises a negative pressure pump installed at the upper end of the collecting box; and the pumping end of the negative pressure pump is connected with a B three-way tube; a pressuresensor module is mounted on a top end of the collection box; the pulse anti-blocking device includes a tube head communicating with a top end of the drainage tube; an annular elastic airbag is fixedlymounted on the left side of the tube head; the elastic airbag is connected with an air guiding tube; the end of the air guiding tube is connected with an A tee tube; the end of the air guiding tube is connected with a branch tube; the other end of the branch is in communication with the output port of a syringe. The device has the beneficial effects that the anti-blocking of the inlet of the drainage end is effectively achieved, and the drainage is facilitated quickly and efficiently, and the sealing of the end portion can be conveniently achieved to avoid backflow.

The present invention relates to anti-back component of exhaust duct which is used in the exhaust duct of the kitchen or toilet to avoid the reverse irrigate of the oil fume waste gas. The anti-back component includes shell and variable speed plate setting outside the shell, inner the shell there is guiding wind duct which shape is similar to the pot mouth with a bell mouth, there is a variable speed hole which has a big wind inlet and a small wind outlet between the variable speed lateral of the shell and the variable speed plate, the shell and variable speed plate is installed inner the exhaust duct, it is gas stream channel outside the variable speed plate. This anti-back component has simple structure, manufacture and installation is convenient, the effect of exhaust smoke is good, and can insure no reverse irrigation.

The invention relates to the technical field of backflow preventers, in particular to a single-diaphragm low-resistance backflow preventer. The single-diaphragm low-resistance backflow preventer comprises a main pipe, a driving assembly, a detection assembly and a control box. Pipe openings in the input end and the output end of the main pipe are in sealed connection with a water inlet pipe and a water outlet pipe correspondingly, a first isolation cavity and a second isolation cavity which are separated by a coaxial annular partition plate are formed in the middle in the main pipe, the first isolation cavity is close to the water inlet pipe, the radius of the pipe openings in the two ends of the main pipe is equal to the radius of the inner ring of the annular partition plate, star-shaped supports are fixed in the first isolation cavity and the second isolation cavity correspondingly, and a water drainage pipe is further arranged at the position, located at the first isolation cavity, of a pipe body of the main pipe. The driving assembly comprises propellers, generators, coils, elastic assemblies, baffles, electromagnets and a one-way electromagnetic valve. The detection assembly comprises angle sensors and hydraulic sensors. The control box is arranged on the outer side pipe wall of the main pipe. The single-diaphragm low-resistance backflow preventer can effectively solve the problems that in the prior art, the head loss is large, the backflow prevention effect is poor, and the alarm function is not achieved.

The invention discloses a rapid drainage device for ICU nursing, and relates to the technical field of ICU critical care medicine. It includes a collection box; the upper end of the collection box is connected with a drainage tube; the anti-blocking device is installed on the drainage tube; the anti-blocking device includes a tube head connected to the top of the drainage tube; the left end of the tube head is fixedly connected with an elastic sleeve; The left end of the casing is butt-connected with the left end of the pipe head; the outer right part of the elastic sleeve is fixedly socketed and connected with an electromagnetic coil; the inner right part of the pipe head is provided with a mounting post; the right end of the mounting post is installed with a permanent magnet; the left end of the mounting post is A piercing rod is installed; an air pressure sensor module is installed in the collection box; the signal output end of the air pressure sensor module is connected with a processor; the output end of the processor is connected with a negative pressure pump and a control circuit of an electromagnetic coil. The beneficial effects of the invention are: more comprehensively and effectively solve the problem of blockage of the end face and the inlet, can more effectively expand the narrow area of ​​the human body, and reduce the entry resistance.

The present invention relates to anti-back component of exhaust duct which is used in the exhaust duct of the kitchen or toilet to avoid the reverse irrigate of the oil fume waste gas. The anti-back component includes shell and variable speed plate setting outside the shell, inner the shell there is guiding wind duct which shape is similar to the pot mouth with a bell mouth, there is a variable speed hole which has a big wind inlet and a small wind outlet between the variable speed lateral of the shell and the variable speed plate, the shell and variable speed plate is installed inner the exhaust duct, it is gas stream channel outside the variable speed plate. This anti-back component has simple structure, manufacture and installation is convenient, the effect of exhaust smoke is good, and can insure no reverse irrigation.

The invention discloses a pulse detonation combustor device based on a rotary valve and pneumatic valve combination. The pulse detonation combustor device based on the rotary valve and pneumatic valve combination comprises a front pipe, a detonation pipe, a rotary valve, a rotary valve shell, a flow guiding block, a pre-detonation pipe, a pneumatic valve and an oil injecting ring; the flow guiding block is installed in the front pipe; the rotary valve and the pneumatic valve are correspondingly connected with the flow guiding block; one end of the pre-detonation pipe is located in the pneumatic valve; the oil injecting ring is installed on the pneumatic valve; the rotary valve shell is installed outside the rotary valve; and an annular channel is formed between the rotary valve and the detonation pipe. The pulse detonation combustor device combines the performance advantages of the rotary valve and the performance advantages of the pneumatic valve, part of air flow is controlled by the rotary valve to alternately enter a detonation pipe channel and the annular channel, and the backflow preventing performance is good; and a spinning disk is adopted as the pneumatic valve, the other part of the air flow enters the detonation pipe through a pneumatic valve channel, and the air inflow stability in the detonation pipe is improved. The conflict between the air inflow stability and the backflow preventing performance of an existing pulse detonation engine and the igniting and detonating problem are solved.

The invention discloses a wear-free spherical check valve, which comprises a valve body, a spherical cylindrical valve core, a spring, a guide plate, a side valve body, and a gasket, and is characterized in that: the left end of the side valve body is connected to the right end of the valve body Connection, the left end of the side valve body is provided with a deflector plate, and gaskets are installed between the deflector plate, the valve body and the side valve body, and a spherical cylinder valve core is installed in the deflector plate, and the spherical cylinder valve core It forms a sealing surface with the middle part of the valve body. A guide rod is set on the spherical cylinder spool, and the guide rod is in the shape of three steps. Contact guide, a compression spring is installed between the spherical cylindrical valve core and the deflector, and the sealing surface is surfacing with Stellite alloy. The invention utilizes the spring to press the spherical cylindrical valve core, the spherical cylindrical valve core and the deflector plate are contacted and guided at two places, the neutrality is good, the structure is reasonable, the seal is not dislocated, the sealing performance is good, and the anti-backflow effect is good. The body valve core and the valve body are surfacing welded with stellite alloy, which has good wear resistance and long service life of the valve.

The invention discloses a hepatobiliary surgery nursing device with a drainage function, and belongs to the field of medical instruments. The nursing device comprises a load plate, a dropsy tank is fixedly mounted on the upper surface of the load plate, the upper surface of the dropsy tank is communicated with one end of an air exhausting pipe, the other end of the air exhausting pipe is communicated with one end of an air exhausting cylinder, a rubber ring is arranged in the air exhausting cylinder and fixedly arranged at one end of a connecting rod, the outer side wall of the connecting rod is arranged in a fixed sleeve in a sleeving manner, and the fixed sleeve is embedded into the other end of the air exhausting cylinder. As the device is provided with the dropsy tank, the air exhausting pipe, the air exhausting cylinder, a dropsy pumping pipe, a dropsy pumping head and a tool table, drainage can be implemented when a patient is nursed by a nurse, the dropsy pumping head is placed into a body of the patient, dropsy in the body of the patient is pumped out by negative pressure generated by air exhausting of the air exhausting cylinder, so that a drainage effect is achieved, nursing and draining are synchronously implemented, and treatment efficiency is improved.

The invention discloses an anti-reflux device for condensed water of a ventilator, which comprises a three-way connection piece, a filter piece and a drying bottle with a built-in desiccant, the filter piece is placed in the three-way connection piece, and the first port of the three-way connection piece is connected to the drying bottle , the second port and the third port are connected to the trachea of ​​the ventilator; the filter is inverted π-shaped, including a horizontal filter and two vertical filters vertically arranged on the horizontal filter, and the horizontal filter is located at the first of the three-way connector. At the port, two longitudinal filter screens are respectively located at the second port and the third port of the three-way connection; the filter element is made of water-absorbent material. The invention can automatically absorb the water vapor and the formed condensed water in the trachea of ​​the ventilator, and can also ensure the effect of preventing the condensed water from flowing back while reducing the workload of medical personnel.

The invention discloses a rapid drainage device for ICU nursing, and relates to the technical field of ICU critical care medicine. It includes a collection box; the upper end of the collection box is connected with a drainage tube; an anti-blocking device is installed on the drainage tube; a pulse negative pressure device is installed at the upper end of the collection box; the anti-blocking device includes a tube head connected to the top of the drainage tube; The inner left part is socketed and fixed with a ring-shaped elastic air bag; in the collection box, the end of the air guide tube is connected with a control air bag; the pulse negative pressure device includes a negative pressure pump installed on the upper end of the collection box; the suction of the negative pressure pump The end is connected with a three-way pipe; the left end port of the three-way pipe is connected with the suction end of the negative pressure pump, the right end port is connected with a suction pipe, and a solenoid valve is installed in the front end port; an air pressure sensor module is installed at the top of the collection box. The beneficial effects of the present invention are: effectively realize the anti-blocking of the inlet of the drainage end, contribute to the efficient and rapid realization of the drainage, can realize the sealing of the end conveniently, and avoid backflow.

The invention relates to an exhaust duct check valve which is used in conjunction with the exhaust duct to prevent backflow of the air flow in the exhaust duct, and has both the function of natural ventilation and the function of variable speed. The interface connected to the exhaust hose of the range hood is provided with a valve body. The air flow channel in the valve body is a variable speed hole with a large air inlet and a small air outlet. A valve plate made of soft material is arranged at the air outlet of the valve body. The valve plate is naturally drooping and covers the end face of the air outlet of the valve body. It has the advantages of simple structure, low cost, convenient installation and use, good anti-backflow effect, convenient valve replacement and oil cleaning, and has the advantages of natural ventilation function and speed change function. , especially the rectification of the exhaust ducts that are in use and will be backflowed, can effectively prevent backflowing.

The invention relates to a cover of oil tank used in large passenger car, which is directly mounted on the frame of vehicle, wherein it comprises a connecting base, a sealing cover, and an oil through hole at the middle of connecting base; the oil through hole via one tube is through to the oil tank inside the vehicle; the sealing cover covers the connecting base, which comprises an upper cover and an lower cover, a connecting rod and a spring; the upper and lower covers both have through holes; one end of connecting rod is movably connected to the through hole of upper cover, while another end is fixed to the through hole of lower cover; the part of connecting rod that between the upper and lower covers is sheathed via spring; two ends of spring are independently contacted to the bottom of upper cover and the top of lower cover. Compared with present technique, the invention can avoid the door of oil tank; when feeding oil, only needing opening sealing cover; and it improves the sealing property and anti-reflux property of sealing cover.

The invention discloses a flue gas backflow preventing chimney for zinc oxide smelting, relates to the field of chimneys, and provides a flue gas backflow preventing chimney for zinc oxide smelting, which is exquisite in structure, good in using effect and good in backflow preventing effect. The flue gas backflow preventing chimney for zinc oxide smelting comprises a body, a gas inlet tube and a backflow preventing assembly, wherein the body sleeves the gas inlet tube; the top edge of the gas inlet tube is positioned in the middle of the body; the backflow preventing assembly comprises an annular bottom plate, an umbrella-cover-shaped baffle and a plurality of supporting rods; the inner edge of the bottom plate is fixedly connected to the outer wall of the gas inlet tube; the outer edge of the bottom plate is fixedly connected to the inner wall of the body; the baffle is fixedly connected to the inside of the body through the supporting rods and is positioned above the gas inlet tube; the bottom edge of the baffle extends to space between the gas inlet tube and the body; a water inlet and an overflow port are further formed in the body; the water inlet is higher than a top opening of the gas inlet tube; and the overflow port is higher than the bottom edge of the baffle and lower than the top opening of the gas inlet tube. The flue gas backflow preventing chimney for zinc oxide smelting has the features of exquisite structure, good using effect and good backflow preventing effect.

The invention relates to a backflow-preventive cap which comprises a main exhaust pipe and branch exhaust pipes. The main exhaust pipe is provided with a top cover, the branch exhaust pipes are connected with upper openings of the main exhaust pipe, are communicated with the main exhaust pipe via liquid and downwardly and obliquely extend along the radial direction of the main exhaust pipe, and the side walls of the main exhaust pipe upwardly extend at the openings to stretch into the branch exhaust pipes. The backflow-preventive cap with the structure has the advantages of simple and compact structure, easiness in machining, high exhaust capacity and excellent backflow-preventive performance.

The invention discloses a rapid drainage device for ICU nursing, and relates to the technical field of ICU critical care medicine. It includes a collection box; the upper end of the collection box is connected with a drainage tube; a pulse anti-blocking device is installed on the drainage tube; a pulse negative pressure device is installed at the upper end of the collection box; the pulse negative pressure device includes a negative pressure pump installed on the upper end of the collection box The suction end of the negative pressure pump is connected with a B tee pipe; the top of the collection box is equipped with an air pressure sensor module; the pulse anti-blocking device includes a pipe head connected to the top of the drainage pipe; An annular elastic air bag is installed; the elastic air bag is connected with an air guide tube; the end of the air guide tube is connected with an A three-way pipe; the end of the air guide tube is connected with a branch pipe; the other end of the branch pipe is connected with an output port of a syringe. The beneficial effects of the present invention are: effectively realize the anti-blocking of the inlet of the drainage end, contribute to efficient and rapid realization of drainage, can realize the sealing of the end conveniently, and avoid backflow.

The invention discloses a humidifier, comprising: an upper box body and a lower box body, an atomizing component is arranged in the lower box body, the inner cavity of the upper box body is divided into a mist outlet channel and a water storage room, and the top surface of the upper box body is provided with an atomizing component. There is a mist outlet, and the two ends of the mist outlet are respectively connected with the atomization component and the mist outlet. The top of the sewage chamber is provided with a medicine box. The inner side of the top surface of the medicine box extends to cover the top opening of the mist outlet. The top side wall of the mist outlet is provided with an air outlet adjacent to the medicine box. The air inlet and the outer side of the top surface of the medicine box are evenly provided with air vents that communicate with the mist outlet, and the bottom surface of the medicine box is evenly provided with liquid leakage holes. In the invention, a diversion structure is arranged between the mist outlet and the medicine box, so that the water vapor can fully contact the whole medicine box, and the materials in the medicine box can be fully utilized. component.