93results about How to "Unobstructed airflow" patented technology

The invention discloses a rear air inlet type heat-conducting smoking device. The heat-conducting smoking device comprises an inner heat-conducting casing and an outer heat-conducting casing nested outside the inner heat-conducting casing, wherein an air inlet interlayer is formed between the inner heat-conducting casing and the outer heat-conducting casing; an airflow inlet is formed between the end part of the inner heat-conducting casing and the end part of the outer heat-conducting casing, a closed end of the outer heat-conducting casing is a heating part, a gap is formed between the heating part and an inner air inlet, and the air inlet interlayer and the gap are communicated to form an airflow passage; and the outer surface of the heating part is sleeved with a fuel part. According to the invention, an opening of the airflow passage is formed in the rear so as to form a certain distance with the fuel part, with the adoption of the arrangement, inlet air is basically isolated from waste gas generated by fuel, and the formula application range of the fuel is broadened; and with the adoption of the structure of the heat-conducting smoking device, the dry distillation effect is greatly improved, the opening of the airflow passage and the burning part of the fuel are isolated, and the application range of the fuel is extended.

The invention discloses a low-nitrogen condensation wall-mounted furnace and an application method thereof. The low-nitrogen condensation wall-mounted furnace comprises a draught fan, a fume collecting hood, a gas valve and a water-cooling combustor. An inner cavity of a gas distributing pipe of the water-cooling combustor is divided into two independent sections through a block plate, and each section is connected with a gas inlet joint. The gas valve is composed of a main on-off valve, a proportion regulating valve and two on-off valves, the main on-off valve is connected with a main gas inlet pipe, and outlets of the two on-off valves communicate with the two sections of the gas distributing pipe separately. The gas distributing pipe is sectioned, all fire rows or a part of fire rows on the gas distributing pipe are controlled to combust, small duty ratio is reduced, and the problems of flameout and too hot water temperature in summer can be solved. In addition, the constant-speed draught fan is adopted for the wall-mounted furnace, so the problem of corrosion of condensate water to a main heat exchanger can be solved. A ventilation baffle is further arranged at the bottom of the fume collecting hood to solve the problem of excessive CO emission under limit gas test conditions. Through experimental verification, when the small load regulation ratio of the wall-mounted furnace is between 0.35-0.5, the problems of flameout and too hot water temperature in summer can be solved.

The invention relates to an anti-haze mask special for a child and belongs to the field of daily life protective articles of people. The anti-haze mask special for the child is composed of a silica gel mask, filer installing seats, a PM2.5 filter, fixing belt fasteners, an exhalation valve, a cover body, an inhalation valve, a filter layer and filter cotton. The cover body is arc-shaped and symmetrically provided with the filer installing seats, the exhalation valve and the inhalation valve are installed on the filer installing seats, the PM2.5 filter and the filter cotton are installed on the inhalation valve, and the fixing belt fasteners are installed on two sides of the cover body. The anti-haze mask adopts a structure that an exhalation channel, the filter and an inhalation channel are separated, flows are smooth, a user breathes smoothly after wearing the mask, the face adhesion effect and sealing effect are good, inhaled air is completely filtered and then is inhaled into a human body, the anti-haze effect is good, and the anti-haze mask is special for the child to wear. The problem that an existing anti-haze mask does not tightly attach to the face of the user, is poor in anti-haze effect and enable the user to feel oppressed and uncomfortable after being worn for a long period of time.

The present invention relates to an iron core-type split reactor. The iron core-type split reactor comprises a rack; the rack is provided with at least one reactor unit; the reactor unit comprises at least two coaxially arranged split coils with axes extending vertically; each split coil comprises a wire inlet end used for and provided in a same main circuit and a wire outlet end used for connecting to a corresponding branch circuit respectively; and an inner side of an innermost split coil is provided with an iron core being coaxial with the split coil. The wire inlet ends of the split coils are disposed in the same main circuit, the outlet ends are connected to the corresponding branch circuits respectively to limit a short circuit current, and the inner side of the innermost coil is provided with the iron core, so that the iron core-type split reactor is low in loss, small in flux leakage and small in volume.

The invention relates to a low-noise cooling tower system. The low-noise cooling tower system comprises at least two cooling towers which are arranged side by side, wherein each cooling tower comprises a vertical tower body, an air duct is arranged at the top of the tower body, a fan is mounted in the air duct, a water collector and a water distribution system are mounted at the upper part inside the tower body, a heat exchange filler layer is mounted below the water distribution system, and a water pool is arranged at the lower part inside the tower body; an air inlet is formed in the side wall of each tower body and located between the corresponding heat exchange filler layer and the corresponding water pool; silencing filler layers are arranged above the water pools of at least the two cooling towers located at two ends. According to the low-noise cooling tower system, the single-side air inlet reverse-flow type cooling towers are adopted, water spraying noise and air entering from the air inlets form convection, air flow in the towers is smooth, the choke area is small, and noise transmission is reduced; the silencing filler layers arranged in the towers can effectively eliminate the water spraying noise.

A cropping locating jig capable of preventing cropping pollution, and a dust exhaust structure and method thereof are disclosed. The dust exhaust structure comprises: a cropping locating jig having a mounting groove formed in a front face thereof, a communicating groove formed in a back face thereof, and a plurality of air exhaust holes formed therein to communicate the mounting groove with the communicating groove, with the mounting groove being suitable for mounting a PCB panel, and an air suction device having a plurality of air suction holes and facing the bottom of the jig to allow at least one of the air suction holes to communicate with the communicating groove, wherein when the PCB panel is cropped, polluting dust generated is suited to reach the communicating groove via the air exhaust holes and further be sucked out via the air suction holes from the communicating groove.

The invention relates to a special mask for preventing haze, and belongs to the field of protective appliances for everyday life of people. The special mask comprises a silicone face mask, filter mounting seats, PM.2.5 (Particulate Matter 2.5) filters, fixed belt fastening parts, exhalation valves, a mask body, inhalation valves and filtering layers; the mask body is arc-shaped, and the filter mounting seats are symmetrically mounted on the mask body; the exhalation valves are mounted on the cover body at the upper parts of the filter mounting seats; the inhalation valves and the PM2.5 filters with the filtering layers are mounted on the filter mounting seats; the fixed belt fastening parts are movably mounted at two sides of the mask body. According to the special mask for preventing the haze, the structure that an exhaling channel, filters and an inhaling channel are separated is adopted, and thereby, smooth airflow is ensured, a user can breathe smoothly after wearing, the mask can fit the face well, the sealing effect is great, the inhaled air can be completely filtered before entering a human body, and as a result, good haze preventing effect is realized. With the adoption of the special mask for preventing the haze, the problems of the existing haze mask that the mask cannot tightly fit the face of a people, obvious haze preventing effect is not realized, and people feels oppressed and uncomfortable after long-time wearing, can be solved.

The invention discloses a method for preparing nitrided ferrovanadium. The method comprises the following steps that (1), a sample fabricated by uniformly mixing and pressing vanadium oxide powder, iron powder and carbon powder is subjected to prereduction through the nitrogen gas in a heating furnace, in the prereduction process, the temperature in the heating furnace is 650 +/-20 DEG C, the nitrogen gas flow is 150-180 L/h, and the heat preservation time of the heating furnace is 3-5 hours; (2), after heat preservation in step (1) is finished, the temperature of the heating furnace is then increased to 1200-1500 DEG C to perform final reduction on the sample, in the final reduction process, the nitrogen gas flow in the heating furnace is 150-180 L/h, and the heat preservation time of theheating furnace is 2-3 hours; (3), after heat preservation in step (2) is finished, the sample is cooled along with the furnace in the atmosphere of the nitrogen gas, and an obtained product is the nitrided ferrovanadium. According to the method, the vanadium oxide powder serves as the raw material, the iron powder serves as the iron source, the carbon powder serves as a reducing agent, the nitrogen gas is introduced into the heating furnace for reaction, and the method has the advantages that the procedure is simple, no vanadium slag is generated, the vanadium utilization rate is high, resources are saved, the environment is protected, and the production cost can be lowered.

The invention discloses a breather for transformers and solves the problem that since exhaust and suction passages of an existing breather for transformers are not separated, oil-bearing gas exhausted by an oil tank of a transformer passes by a drying barrel and contaminate a drying agent. The breather comprises a drying barrel and also comprises an intake passage and an exhaust passage, the suction passage is communicated with a gas passage of an oil tank, the intake passage is provided with an intake one-way valve that has a flow direction from the outside of the breather toward the gas passage of the oil tank, the intake passage is communicated with the drying barrel, the exhaust passage is provided with an exhaust one-way valve that has a flow direction from the gas passage of the oil tank toward the outside of the breather, one end of the exhaust passage is communicated with the gas passage of the oil tank, the other end of the exhaust passage is communicated with the outside of the breather, and the exhaust passage is isolated from the drying agent in the drying barrel. The breather has the advantages that the intake passage and the exhaust passage are separated in order to directly discharge oil-bearing gas exhausted by the oil tank of the transformer out of the breather, the service life of the drying agent is greatly extended, smoothness of a gas flow in the breather is maintained for long time, and maintenance cost is reduced.

A saggar for roasting electronic elements and electronic materials belongs to a container made of refractory materials and comprises a saggar body. Supporting lugs are disposed at the bottom of the saggar body, so that when used in a kiln, the saggar is heated and cooled uniformly, airflow at the bottom of the saggar is smooth, influence of contact stress concentration between the saggar and a push plate is low, possibility of crack of the bottom of the saggar is reduced, the service life of the saggar is prolonged, and service cost is lowered.

The invention relates to the technical field of medical instruments, in particular to a medical anti-bedsore nursing bed with a fresh air system. The nursing bed comprises a bed frame, a cavity is formed in the bed frame, and a fresh air chamber is formed in the top surface of the bed frame; a bed board is arranged on the fresh air chamber; and an inverted frustum-shaped battery chamber is arranged in the middle of the bottom surface of the bed frame; a battery pack is arranged in the inverted frustum-shaped battery chamber; an air blower is arranged in the middle of the left side surface of the fresh air chamber, and a heating assembly is arranged on an air outlet of the air blower; an exhaust fan is arranged at an air guide opening in the middle of the right side surface of the fresh airchamber, and a fresh air duct is formed. The fresh air cavity is formed in the lower portion of the nursing bed board, lifting cushion plates are arranged at the ankles, butts and back of the human body, and accordingly direct compression is relieved; a ventilation hole is formed to guarantee smooth air flow. The nursing bed is convenient to use and good in effect, greatly reduces the nursing strength, greatly improves the comfort degree of a patient, and is multipurpose.

The invention discloses an air conditioning duct system capable of evenly regulating a temperature field of a building atrium. Firstly, rooms and the atrium communicate with the outside, and the roomsand the atrium communicate mutually to form an air flowing channel; and secondly, the rooms or the atrium is provided with a fresh air device forming the air pressure, so that the air pressure difference is formed between the rooms and the atrium. The air conditioning duct system capable of evenly regulating the temperature field of the building atrium is provided for solving the problem that thelarge vertical temperature gradient of the atrium space cannot be solved by an existing air conditioning system. The temperature field of the atrium space can tend to uniform in the vertical direction through the air conditioning duct system.

The invention provides a thermogravimetric apparatus for measuring volatile and easily condensed products in products. The apparatus comprises a balance (1), a collecting cup (2), a heating furnace (3), an elevating device (4), a data processing system (5) and a gas circuit system (6), wherein the balance is used for measuring mass variation and comprises an upper end micro balance and a lower end micro balance; the lower end of the upper end micro balance is connected with a volatile matter condensing and collecting cup by a hanging hook and used for measuring the mass variation of the volatile and easily condensed products generated in the reaction; the lower end micro balance is connected with a crucible for placing samples through a reactant supporting rod and is used for measuring mass variation of the reactant; and the collecting cup completely covers the crucible for filling the reactant and has an effect of preventing volatile matters generated in the reaction from being condensed on a furnace tube. Through the adoption of the thermogravimetric apparatus provided by the invention, a difficult problem that the traditional thermogravimetric equipment cannot measure the samples of the volatile and easily condensed products generated in the reaction process; moreover, the mass variations of the samples and the volatile matters can be simultaneously measured, so that the thermogravimetric equipment obtains wider applicability.

The invention discloses a biofuel curved piece type pressing device. The biofuel curved piece type pressing device is characterized by comprising a main roller and a synchronous roller; the main roller is cylindrical; the two end surfaces of the main roller are fixedly connected with main end plates; the two main end plates are connected with main transmission rollers coaxially connected to a bracket with the main roller; peripheral main wave peaks and peripheral main wave troughs are axially spaced on the surface of the main roller; the synchronous roller is cylindrical, has the same length with the main roller, and is parallel to the axis of the main roller; the two ends of the synchronous roller are fixedly connected with synchronous end plates; the synchronous end plates are fixedly connected with synchronous transmission shafts coaxial with the synchronous roller; the synchronous transmission shafts and the main transmission rollers are connected through synchronous gears, and are opposite in rotating direction; and peripheral synchronous wave peaks and peripheral synchronous wave troughs are axially spaced on the surface of the synchronous roller. Particles obtained by pressing and smashing are accumulated to obtain big gaps, are filled in a boiler to realize smoothness of air currents, and are vigorously burnt; and burnt thin dust can retain the gaps to the greatest extent to accelerate combustion.

The invention provides a module box for a modular data center, comprising a shell (1), and cabinets (101) and heat absorption devices (102) arranged inside the shell (1). Each cabinet (101) has a cold air inlet (101a) and a hot air outlet (101b). Each heat absorption device (102) has a hot air inlet (102a) and a cold air outlet (102b). The cabinets (101) and the heat absorption devices (102) are arranged side by side, the air inlet and outlet direction of the cabinets (101) is parallel to the air inlet and outlet direction of the heat absorption devices (102), and the airflow direction of the cabinets (101) is opposite to the air flow direction of the heat absorption devices (102), so that annular circulating airflow sequentially passing the hot air outlets (101b) of the cabinets (101), the hot air inlets (102a) of the heat absorption devices (102), the cold air outlets (102b) of the heat absorption devices (102) and the cold air inlets (101a) of the cabinets (101) is formed. The airflow inside the module box is smooth, and the heat exchange efficiency is high.

The invention provides a novel electric dust remover and relates to the field of environmental protection equipment. The novel electric dust remover comprises a dust remover shell body. One end of the dust remover shell body is provided with an air inlet, and the other end of the dust remover shell body is provided with an air outlet. The lower end of the dust remover shell body is further provided with at least two dust storage hoppers. The air outlet of the dust remover shell body is further provided with a filter screen. The filter screen is further arranged at the air outlet of the dust remover shell body, thus, smooth airflow can be ensured, and the dust deposition phenomenon is avoided. The novel electric dust remover is low in improvement cost and can be widely applied to the technical field of environmental protection equipment.

The invention discloses a cooling spray tower. The cooling spray tower comprises a cooling tower body. An air inlet device is arranged at the position, close to the top, of the cooling tower body and is fixed to the cooling tower body. The upper surface of the air inlet device is connected with more than one air inlet pipe. The air inlet pipes are evenly arranged on the air inlet device. The air inlet pipes are detachably connected with the air inlet device. Pre-cooling layers are arranged in the cooling tower body. One end of each pre-cooling layer is fixed to the inner wall of the cooling tower body. Shifting pieces are connected to the pre-cooling layers. The shifting pieces are connected with the pre-cooling layers in a sliding manner. A water collection tank is arranged at the bottom of the cooling tower body. The cooling tower body and the water collection tank are communicated and connected. By means of the cooling spray tower, the stability of air flow entering the tower can be better improved; the influences of the wind force of the atmosphere on the cooling tower can be effectively avoided; the air inlet resistance is small; the air flow is smooth; the cooling efficiency is greatly improved; pre-cooling can be conveniently conducted; the pre-cooling effect is quite good; and therefore the cooling efficiency is greatly improved, and energy is effectively saved to a certain extent.

The invention discloses a reed opening and weft inserting auxiliary mechanism for an air jet loom. The reed opening and weft inserting auxiliary mechanism is characterized by comprising a bearing seat assembly, a cam, a swing arm and an auxiliary reed groove, wherein the bearing seat assembly is fixedly arranged on a rack of the air jet loom and is hollowly sleeved on a beating-up shaft of the air jet loom; the bearing seat assembly is provided with a cam supporting block and the cam is connected with the cam supporting block through a cam connecting block; the swing arm is fixed on the beating-up shaft through a swing arm bracket; one end of the swing arm is provided with an idler wheel and the idler wheel is matched with the cam; and the other end of the swing arm is connected with the auxiliary reed groove. With the adoption of the air jet loom disclosed by the invention, a through air channel is formed by the whole reed groove in a weft insertion processing period so as to guarantee smooth air flow and ensure the weft insertion to be smoother, so that the operation of the loom is more stable and reliable. Furthermore, the reed opening and weft inserting auxiliary mechanism has the advantages of compact structure, convenience for adjustment and the like.

The invention relates to an exhaust device for a decorating machine. The exhaust device comprises a cover covering a drying component of the decorating machine, clearances allowing a printing sheet to penetrate are formed in the upper portion and the lower portion of the cover, and a draft fan for pumping out ink smoke, heat and steam is connected with the cover. The exhaust device of the structure comprises the cover covering the drying component of the decorating machine, the cover is connected with the draft fan for pumping out the ink smoke, the heat is prevented from being dissipated into a room, drying quality is improved, the situation that the heat is dissipated into the room, consequently, indoor temperature is too high, high-power cooling equipment has to be mounted, and electric energy is wasted is avoided, the effect of saving energy is achieved, and production cost is saved. Ink gas generated in the drying process and other gas harmful to the human body are pumped out by the draft fan, and exhausted outdoors, work environment is improved, the bodies of production personnel are prevented from being injured, and the function of environmental protection is achieved. The steam generated in the drying process is pumped away, humidity in the cover is reduced, and the drying effect is better.