643results about How to "Increase air volume" patented technology

The invention relates to a distribution box with an autonomous heat dissipation mechanism, and belongs to the technical field of distribution box equipment. The distribution box with the autonomous heat dissipation mechanism comprises a box body, an electric push rod and a top cover, the electric push rod is arranged between the box body and the top cover, a controller is arranged at the bottom end of the top cover, a raindrop sensor is arranged in the middle of the top end of the top cover, and a temperature sensor is arranged in the box body; the heat dissipation device can be switched and adjusted in multiple states, a ventilation heat dissipation state can be kept in a conventional state, and in a rapid heat dissipation state, an air inlet of the device can be arranged, the air inlet amount can be increased, and a heat dissipation channel is formed in the box body under the influence of an L-shaped plate and a blocking plate; and meanwhile, the device can be matched with a temperature sensor, a controller and an electric push rod according to needs, self-adaptive switching adjustment can be conducted according to the actual operation state of the device, autonomous heat dissipation of the device is achieved, the device is not affected by external factors, and stable and efficient operation of the device can be achieved.

The invention provides a cylindrical hydrodynamic ventilation structure special for a cooling tower fan, and belongs to the technical field of cooling ventilation. Comprising a tower body, a water basin is installed at the bottom of the tower body, a water inlet pipe is installed at one end of the water basin, a water return pipe is installed at the top of the water inlet pipe, a water pump is arranged at one end of the water inlet pipe, and a water outlet pipe is installed at one end of the water basin. By arranging the worm gear speed increasing assembly and the power driving assembly, kinetic energy of water flow is converted into mechanical energy through circulation of water power, the cooling process is accelerated, complex parts such as a motor and a transmission device in a traditional cooling tower are reduced, the manufacturing cost is reduced, maintenance points and the fault rate are reduced, and the service life of the cooling tower is prolonged. The reliability and stability of the system are improved, the rotation angle adjustment of the fan blades is increased, the air volume is increased, evaporation and heat dissipation of water are accelerated, energy consumption is reduced, the flexibility of the system is enhanced, and the ventilation structure can adapt to different working environments and cooling requirements.

The utility model belongs to the technical field of air conditioners, and discloses an air outlet mesh enclosure and an outdoor unit panel, main ribs are additionally arranged, and the minimum width of the main ribs in the radial direction of a center plate is limited to be larger than the width of radiation ribs in the radial direction of the center plate, so that the structural strength of the air outlet mesh enclosure is enhanced; therefore, when the air outlet mesh enclosure is designed, the number of the annular ribs can be reduced, so that the density of grids of the grating is reduced, the air outlet resistance of the air outlet mesh enclosure is reduced, and the noise of the air outlet mesh enclosure is reduced. Meanwhile, the minimum width of the main ribs in the radial direction of the center plate is limited to be larger than the width of the radial ribs in the radial direction of the center plate, the structural strength of the whole air outlet mesh enclosure can be improved, and the identification degree of the air outlet mesh enclosure is improved. In addition, the radiation ribs and the main ribs extend in the radial direction of the center plate in an arc mode, so that the radiation ribs and the main ribs are matched with the arc in the blade rotating direction of the wind wheel, the wind resistance of the air outlet mesh enclosure is smaller, and the air outlet noise is lower.

The ignition structure comprises an ignition needle and a discharge column, the lower surface of the discharge column faces the discharge end of the ignition needle, the lower surface of the discharge column comprises a plurality of conductive tips, and the distances from the conductive tips to the discharge end of the ignition needle are equal. The plurality of conductive tips are arranged on the lower surface of the discharge column, the greasy dirt can be shared, the greasy dirt is prevented from gathering and completely covering the lower surface of the discharge column, the greasy dirt gathered at the conductive tips easily drips under the gravity action of the greasy dirt, and therefore gathering of the greasy dirt on the lower surface of the discharge column is further reduced. The distances between the multiple conductive tips and the discharge end of the ignition needle are equal, all the conductive tips can effectively receive discharge of the ignition needle, when part of the conductive tips are covered with oil stains, other conductive tips can effectively receive discharge of the discharge end of the ignition needle, and therefore the ignition success rate is increased.

The utility model provides a portable fan which comprises a shell, a fan cover, a fan cover and a fan cover. The fan is arranged in the shell and comprises a hub and a plurality of fan blades arranged on the outer side of the hub; the motor is installed in the shell and used for driving the fan assembly to rotate; the first fluid director is arranged at the rear end of the shell, and a first distance is formed between the rear end of the first fluid director and the rear end of the hub; the second fluid director is arranged at the front end of the shell, and a second distance is formed between the front end of the second fluid director and the front end of the hub; wherein the first spacing is smaller than the second spacing. By arranging the first fluid director and the second fluid director, the air pressure and the air effect are enhanced, the first interval and the second interval are arranged, and the first interval is smaller than the second interval, so that airflow has enough air inlet distance and air outlet distance, and fluid guiding, rectifying and pressurizing structures are arranged in the air inlet distance and the air outlet distance; and the air volume, the air pressure and the air effect can be improved under the condition that the size of the portable fan is limited.

The utility model discloses a desulfurization wastewater zero-discharge drying system based on rotary atomization and Venturi, which belongs to the technical field of wastewater desulfurization and comprises a first booster fan, a bypass flue, a drying tower, a Venturi ejector and a rotary atomizer, the bypass flue is connected with a boiler main flue in parallel, and the drying tower, the Venturi ejector and the rotary atomizer are positioned on the bypass flue. An inlet of the bypass flue is located between the boiler and the air pre-heater, an outlet of the bypass flue is located between the air pre-heater and the dust remover, and the drying tower is communicated with the desulfurizing tower located on the main flue. The Venturi jet device is provided with a gas inlet end, a gas outlet end and an injection end, the gas inlet end is communicated with an outlet flue of the drying tower, and the gas outlet end is communicated with an inlet flue of the dust remover; one end of the first booster fan is communicated with an outlet flue of the dust remover, and the other end of the first booster fan is communicated with the injection end; the rotary atomizer is located at the top of the drying tower and used for mixing flue gas from the bypass flue with desulfurization wastewater from the desulfurization tower, and the flowing directions of the flue gas and wastewater fog drops are the same. And zero discharge of wastewater is realized.

The invention discloses a coaxial reverse rotation fog gun fan in the technical field of environmental protection equipment. The coaxial reverse rotation fog gun fan comprises a forward rotation impeller, a reverse rotation impeller, a motor, a transmission mechanism and a connecting support. The forward rotation impeller and the reverse rotation impeller are coaxially arranged, the motor is used for driving the transmission mechanism, and the transmission mechanism and the transmission mechanism are installed in the barrel through the connecting support. According to the fog gun fan, gear meshing and synchronous belt wheel transmission modes are adopted, so that the forward-rotating impeller and the reverse-rotating impeller rotate on the same axis at a high speed, secondary energy loss caused by vortex of airflow and impact on a flow guide plate is avoided, and compared with a fog gun fan with two stages of impellers in the same rotating direction, the fog gun fan has the advantages that the structure is simple; under the same rotating speed, the fog gun fan with the coaxial shaft counter-rotating impeller structure is stronger in outlet airflow and high in efficiency, the noise generated by the airflow is reduced, the air volume and the air pressure are improved, and the range of a fog gun is increased.

The invention discloses an intelligent air circulation fan, and relates to the technical field of circulation fans, the intelligent air circulation fan comprises an outer cylinder mechanism, the outer cylinder mechanism comprises an outer cylinder, one port of the outer cylinder is expanded outwards, the lower side of the outer cylinder is provided with a support assembly, the other port of the outer cylinder is in butt joint with a main cylinder mechanism, the main cylinder mechanism comprises a main cylinder, and the main cylinder is fixedly connected with the outer cylinder through a flange; an impeller assembly is arranged in the main cylinder mechanism, a framework assembly is arranged in an externally-expanded port of the outer cylinder and comprises a hollow water bin, bin columns used for supporting are evenly and fixedly connected between the outer side of one end of the water bin and the outer cylinder at equal intervals, and the outer side of the other end of the water bin is fixedly sleeved with a cover cylinder; the two sides of the lower inner wall of the cover cylinder are fixedly connected with bottom tables correspondingly, motors fixedly connected with the bottom tables are embedded and inserted into the cover cylinder, the impeller assembly comprises a shaft cylinder mechanism and a fan mechanism, and according to the intelligent air circulation fan, the atomization effect is improved, and the air wetting effect is remarkably improved.

The invention discloses impurity removal equipment for lubricating oil production, and belongs to the technical direction of lubricating oil production, the impurity removal equipment comprises an impurity removal box and an air inlet box, one end of the air inlet box is detachably provided with an electric roller shutter door, the other end of the air inlet box is fixedly provided with a fixed seat, and one side of the fixed seat is detachably provided with a first bevel gear; a first bevel gear is detachably mounted on one side of the fixing seat, a second bevel gear is detachably mounted on the other side of the fixing seat, the first bevel gear is meshed with the second bevel gear, a first impurity removal brush cylinder is arranged on the first mounting seat, and a second mounting seat is fixedly mounted on one side of the impurity removal box. The air inlet amount can be changed according to different lubricating oil yields, when a small amount of lubricating oil is produced, the minimum air inlet speed is used, the air inlet amount is increased, external air slowly enters the impurity removal box, dust and sediment in a workshop are prevented from rising due to the too high air inlet speed, dust is prevented from entering the impurity removal box, and the impurity removal efficiency is improved.

The invention provides a submersible aerator and an aeration method.The submersible aerator comprises an air inlet pipe, an aeration chamber and a submersible electric pump, the aeration chamber comprises a water jacket and an aeration disc, the aeration disc is provided with an aeration cavity with an opening in the upper end and a plurality of flow channels distributed in the circumferential direction of the aeration cavity and communicated with the aeration cavity, and the bottom end of the water jacket is connected with the top end of the aeration disc; an inner cavity of the water jacket is communicated with the aeration cavity; the air inlet pipe is coaxially arranged in the water jacket, and the bottom end of the air inlet pipe is positioned at an opening in the upper end of the aeration cavity; the top end of the air inlet pipe is located above the liquid level, and the top end of the water jacket is 10-50 mm below the liquid level. A first impeller is arranged in the aeration cavity; the first impeller is connected with a submersible electric pump positioned below the aeration disc; according to the submersible aerator and the aeration method provided by the invention, the amount of air entering a water body is effectively increased, and the oxygen dissolving efficiency is improved.

The invention provides a mobile air conditioner capable of changing the cold air outlet direction and provided with obliquely-installed coaxial cold and hot air ducts, which comprises a shell serving as a mounting carrier, an air inlet, an air outlet, an air outlet, an air inlet and an air outlet, the shell is hollow, and a mounting cavity is formed in the shell; the volute assembly is obliquely arranged in the mounting cavity, the volute assembly comprises an upper volute assembly and a lower volute assembly located below the upper volute assembly, an upper volute cavity and a lower volute cavity are formed in the upper volute assembly and the lower volute assembly respectively, the upper volute cavity and the lower volute cavity are coaxially arranged, and the axis of the upper volute cavity and the axis of the lower volute cavity incline to the horizontal plane; an exhaust channel is arranged on the side wall of the upper volute cavity, extends upwards, is in butt joint with a first air outlet in the top of the shell and is used for discharging air. The mobile air conditioner capable of changing the cold air outlet direction and provided with the obliquely-installed coaxial cold and hot air ducts is compact in structure, small in size, low in manufacturing cost and use cost, convenient to assemble, high in air outlet speed, long in air supply distance, low in working noise, good in use effect and long in service life.

The utility model relates to the technical field of computer heat dissipation, in particular to an efficient heat dissipation device for computer management, which comprises a placement frame, a plurality of ventilation grooves are formed in the upper end and the lower end of the placement frame, two fixing blocks are fixedly connected to the front end of the placement frame, and a cooler is fixedly connected to the interior of the placement frame. The lower end of the placing frame is fixedly connected with an adjusting support. According to the efficient heat dissipation device for computer management, heat generated in a computer can be effectively absorbed and discharged through the arranged cooler and the arranged adjusting support, it is ensured that the computer keeps stable performance under long-time and high-load operation, and the service life of the computer is prolonged. Meanwhile, the user can adjust the height and the angle of the computer screen according to requirements, so that the user can keep a more comfortable sitting posture and a more comfortable visual angle during operation.

The utility model discloses a direct current type fan, relates to the technical field of fans, aims to solve the problem that a traditional fan is small in air pressure and air volume, and comprises a barrel-shaped outer shell, a fan body is installed inside the outer shell, an air outlet cover is installed at the top end of the outer shell, an air outlet is formed in the air outlet cover, and an air inlet is formed in the outer shell. An air inlet cover is installed at the bottom end of the outer shell, a plurality of air inlets are formed in the air inlet cover, and the air outlet cover, the outer shell and the air inlet cover are coaxially arranged.

The mobile air conditioner comprises a shell, a horizontal partition plate is arranged in the shell and divides the shell into an upper cavity and a lower cavity, a first volute assembly made of heat preservation materials is arranged in the upper cavity, a first volute cavity is formed in the first volute assembly, an evaporator is arranged at the air inlet end of the first volute cavity, and a second volute assembly made of heat preservation materials is arranged at the air outlet end of the first volute cavity. The air outlet of the first volute cavity faces upwards; a second volute assembly is arranged in the lower cavity, a second volute cavity is formed in the second volute assembly, a condenser is arranged at the air inlet end of the second volute cavity, and the air inlet end of the second volute cavity and the air inlet end of the first volute cavity are located on different faces of the shell. The mobile air conditioner with the heat preservation air cavity is compact in structure, convenient and rapid to assemble, high in precision, low in working noise and power consumption, large in air outlet amount, long in air supply distance and good in heat dissipation performance, continuous and stable refrigeration of the mobile air conditioner is guaranteed, and the using effect is good.

The present invention belongs to the technical field of explosion-proof motors, and specifically relates to a heat-dissipating explosion-proof motor, which includes a housing, a stator, a rotor, a sealed front cover, a sealed rear cover, a fan, an adjustment component, an adjustment frame, a vent pipe, a lightweight plate, a sealing rubber, and a dust screen. When the speed of the motor of the present invention increases, the speed of the fan increases accordingly, and at the same time, the working heat of the motor increases. During this process, the electromagnetic ring attracts the suction plate, causing the suction plate to slide along the rotating sleeve. When the gear on the suction plate is engaged with the rack plate, the fan drives the lightweight plate to move relatively away through the gear. As the lightweight plate moves, the lightweight plate stretches the dust screen, increasing the vertical area of ​​the dust screen, and the air intake of the dust screen increases accordingly. While the fan speed increases, the ventilation volume of the dust screen increases accordingly. Therefore, the heat dissipation efficiency of the fan is improved accordingly, so that the fan can effectively dissipate the increased working heat of the motor and avoid the accumulation of heat inside the motor affecting its circuit.

The utility model discloses an air duct structure of a fan coil, which comprises an air duct shell, a return air inlet and an air outlet are arranged on the air duct shell, a drum-type centrifugal fan is arranged in the air duct shell, the return air inlet is arranged at the bottom of the air duct shell and positioned below the drum-type centrifugal fan, and the air outlet is arranged at the bottom of the air duct shell and positioned below the drum-type centrifugal fan. The drum-type centrifugal fan is used for sucking air at the air return opening into the air duct shell, an air guide plate used for guiding the air direction of the air sucked by the drum-type centrifugal fan is arranged in the air duct shell, and the air outlet is formed in the side face, opposite to the drum-type centrifugal fan, of the air duct shell. The drum-type centrifugal fan is adopted to replace a double-end centrifugal fan, the technical limitation that the air inlet amount is limited by the size of an air outlet of the fan is eliminated, the air inlet amount is increased, it is guaranteed that airflow makes full and even contact with the surface air cooler, energy consumption of the fan coil is effectively reduced, the using effect of the fan coil is improved, and the service life of the fan coil is prolonged. And the use comfort is improved.

The utility model discloses a top air outlet type air conditioner outdoor unit, and relates to the technical field of air conditioners. The top air outlet type air conditioner outdoor unit comprises a machine shell, an outdoor heat exchanger, a compressor and an outdoor fan. The outdoor fan comprises a hub and blades arranged on the peripheral face of the hub. Each blade comprises a blade root, a blade top, a front edge and a rear edge; the blade root is connected with the hub; the blade top is radially far away from the hub relative to the blade root; the front edge is located at the front end of the blade rotation direction and connected with the blade top and the blade root. The tail edge is located at the rear end of the blade rotation direction and connected with the blade top and the blade root. The trailing edge is limited to form a trailing edge contour line; the trailing edge profile curve comprises a first bent part and a second bent part, the first bent part protrudes towards the side away from the leading edge, and the second bent part sinks towards the side close to the leading edge, so that a noise reduction notch is formed; and the first bent part and the second bent part are connected in sequence. According to the top air outlet type air conditioner outdoor unit, the blade tail edge shape and / or the blade shape are / is optimized, so that noise generated when the fan operates is reduced.

The utility model discloses a top-air-out energy storage container which comprises a container body, a battery containing bin and a liquid cooling containing bin, the container body is divided into the battery containing bin and the liquid cooling containing bin, and the liquid cooling containing bin is located at the end in the length direction of the container body; the plurality of energy storage batteries are accommodated in the battery accommodating cabin; the liquid cooling assembly comprises a liquid cooling heat exchanger and a liquid cooling pipeline; the liquid cooling heat exchanger is arranged in the liquid cooling accommodating bin and is connected to each energy storage battery through a liquid cooling pipeline; the liquid cooling heat exchanger dissipates heat in an air cooling mode, air enters from the side portion of the liquid cooling containing bin and exits from the top of the liquid cooling containing bin, and the air inlet position of the liquid cooling heat exchanger is the end of the box body in the length direction. The top-air-out energy storage container can solve the problem that the liquid cooling heat exchanger repeatedly sucks out air with the high temperature, and the heat exchange efficiency is improved.

The utility model discloses a heating core assembly for a heat gun, which belongs to the technical field of electric tools and comprises a sleeve, a core frame, a heating element and a ceramic ring, the core frame, the heating element and the ceramic ring are positioned in the sleeve, the heating element is arranged on the core frame, the ceramic ring is positioned at the downstream of the heating element, an air outlet cover is arranged in front of the core frame, and the air outlet cover is arranged in front of the core frame. A ceramic ring is arranged between the core frame and the air outlet cover, the ceramic ring comprises a mounting part and an outer ring located on the periphery of the fixing part, the mounting part and the outer ring are connected through a plurality of connecting ribs, a ventilating duct is formed between every two adjacent connecting ribs, and a breaking seam enabling the outer ring to be broken in the circumferential direction is formed in the outer ring. The outer ring of the ceramic ring is provided with the breaking seam, so that the ceramic ring is broken in the circumferential direction, the situation that the ceramic ring is damaged due to thermal expansion is avoided, and the service life of the ceramic ring is guaranteed.

The invention provides a fan structure and a household appliance, and the fan structure comprises a volute, a centrifugal fan blade, a first air outlet channel and a second air outlet channel; an air outlet is formed in the volute, and the centrifugal fan blades are rotatably mounted in the volute and used for exhausting air through the air outlet during rotation; the volute can rotate to a first position and a second position, and at the first position, the air outlet communicates with the first air outlet channel; at the second position, the air outlet is communicated with the second air outlet channel; the centrifugal fan blade and the volute are driven by the same driving mechanism to rotate; the fan structure has at least two states, in the first state, the driving mechanism drives the centrifugal fan blades to rotate, and the volute keeps still; and in the second state, the driving mechanism drives the volute to rotate to the first position or the second position. The switching of the air outlet channels is driven by using the driving mechanism of the centrifugal fan blade, so that at least one set of driving mechanism can be saved, and the driving cost is reduced.

The invention discloses a self-cleaning electric installation cabinet dustproof mechanism, and relates to the technical field of electric installation cabinets, the self-cleaning electric installation cabinet dustproof mechanism comprises a fixed frame, the middle part of the inner wall of the fixed frame is fixedly connected with a partition plate, the outer side of the partition plate is provided with an annular hole, the side edge of the inner wall of the fixed frame is provided with an annular groove, and the inner wall of the annular groove is slidably connected with a round rod. A square plate is rotationally connected to the outer side of the round rod, a brush is fixedly connected to the end, close to the partition plate, of the square plate, a connecting rod is fixedly connected to the outer side of the square plate, and an elastic plate is fixedly connected to the side, close to the brush, of the square plate. According to the self-cleaning dustproof mechanism of the electrical installation cabinet, air convection replacement inside and outside the cabinet body is carried out through annular holes in the partition plates on the two sides of the cabinet body, heat dissipation of electrical equipment is achieved, dust is prevented from polluting the electrical equipment, at the moment, a square plate slightly rotates around a round rod under flowing of air flow, the square plate drives a brush to clean the annular holes in the partition plates, and the service life of the electrical equipment is prolonged. And the ring hole is prevented from being blocked.

The invention discloses air particulate matter concentration detection equipment, and relates to the technical field of air detection.The air particulate matter concentration detection equipment comprises a main body and an air inlet pipe, a support is installed in a connector of the air inlet pipe and the main body, a second motor is installed in the middle of the support, and blades are installed on an operating shaft of the second motor; the device has the advantages that the first motor of the flow guide assembly drives the rotating frame to rotate, the angle of the flow guide plate can be adjusted to guide air into the air inlet, the air inflow is increased, it is ensured that an air sample is fully obtained in time, mounting and dismounting are convenient, the flow guide assembly can be easily taken down when equipment is transferred, and meanwhile the position of the air inlet pipe can be adjusted by screwing a rotating wheel; the main body is rotationally placed on the placing frame behind the main body, so that the vertical occupied area is reduced, obstruction is avoided when the equipment is moved, the main body can be fixed on the bearing frame through the mounting frame, the sliding block, the clamping block and the like during mounting, different mounting scenes are adapted, the mounting efficiency is improved, the operation stability is ensured, and the equipment universality is improved.

The invention provides a volute assembly, a fan and an air conditioner. The volute assembly comprises a volute; the diffusion section is arranged on the volute casing, and the diffusion section is communicated with the volute casing; the diffusion section comprises a lower wall, an upper wall and a diffusion side wall, wherein the lower wall and the upper wall are opposite, and the diffusion side wall is located between the lower wall and the upper wall. According to the volute assembly, the fan and the air conditioner, the shape of the diffusion side wall of the diffusion section is limited, and the shape of the diffusion side wall inclines outwards in the airflow direction and the direction from bottom to top, so that the diffusion side wall forms a curved surface shape gradually away from the center of the diffusion section; therefore, the distribution of the diffusion section and the diffusion degree can be reliably controlled to be matched with the speed distribution of air flow exhausted by the volute, the hidden danger that the air outlet speed of the volute is too large is solved, the outlet dynamic pressure of the volute assembly is effectively recycled, the static pressure carrying capacity and the air volume of a fan are improved, and air noise is reduced.

The invention relates to the technical field of electronic equipment, in particular to a fan and electronic equipment. The fan provided by the embodiment of the invention comprises a hub, a first connecting ring and a second connecting ring, the first connecting ring is arranged around the hub, a plurality of first blades are arranged between the hub and the first connecting ring, and the first blades extend from the hub to the first connecting ring; a second connecting ring is arranged around the first connecting ring, a plurality of second blades are arranged between the first connecting ring and the second connecting ring, and the second blades extend from the first connecting ring to the second connecting ring; the number of the second blades is larger than that of the first blades. According to the fan provided by the embodiment of the utility model, the impedance of the fan blades can be reduced, so that the suction force to air can be increased, and the overall heat dissipation performance of a system is improved.

The application relates to the air conditioning technical field and discloses an indoor unit and an air conditioner. The indoor unit comprises a shell, an air duct formed in the shell, an air inlet and an air outlet, and the air duct is communicated between the air inlet and the air outlet; a heat exchanger located in the air duct; a cross-flow fan located in the air duct, the cross-flow fan comprising a motor; wherein a side wall of the air duct is provided with an exhaust passage communicated with the air duct, the shell is further provided with a heat dissipation passage, the heat dissipation passage is located outside the air duct and is communicated between the exhaust passage and the motor, and airflow in the air duct can flow to the motor through the exhaust passage and the heat dissipation passage. The airflow in the air duct has certain kinetic energy and temperature regulation, thereby providing continuous cooling effect for the motor, so that the heat dissipation efficiency of the motor is remarkably improved, and the service life of the motor is prolonged.

The invention relates to the technical field of spraying devices, and discloses a spray head assembly and a bathroom device.The spray head assembly comprises a liquid inlet part and is provided with a liquid inlet cavity, the cavity wall of the liquid inlet cavity comprises an inner cavity wall and an outer cavity wall, the outer cavity wall is arranged on the outer side of the inner cavity wall in a surrounding mode, and a gap is formed between the outer cavity wall and the inner cavity wall to form the liquid inlet cavity; the inner cavity wall and / or the outer cavity wall are / is provided with at least one fluctuating section, and the fluctuating section extends in the direction from the liquid inlet end to the liquid outlet end of the liquid inlet cavity, so that at least part of the inner cavity of the liquid inlet cavity is gradually shrunk in the direction from the liquid inlet end to the liquid outlet end. The turbulent flow effect of mixed liquid sprayed out of the liquid outlet end can be enhanced, the contact surface area of the mixed liquid and air is increased, and the foaming effect is improved.

The invention discloses an anti-corrosion air distribution box of an RTO heat storage type incinerator, and belongs to the technical field of air box anti-corrosion. The anti-corrosion air distribution box of the RTO heat storage type incinerator comprises the RTO heat storage type incinerator, and an air box assembly is further arranged at the bottom of the RTO heat storage type incinerator; the air box assembly comprises a fixing frame, an air inlet pipe, an electric valve, a first motor, a first ventilation pipe, a first pressure sensor, a first activated carbon block, a second ventilation pipe, a second baffle, a second pressure sensor and a second activated carbon block. The anti-corrosion method can be changed according to different air humidity, when the external air humidity is low, only two sets of activated carbon blocks are used for dehumidification and anti-corrosion operation, energy consumption is reduced, the effects of energy conservation and emission reduction are achieved, meanwhile, the air inlet amount is increased, the production efficiency is improved, and when the external air is humid, heat generated by incineration is used for heating and dehumidification, so that the environment is protected. Corrosion caused by wet gas accumulation is avoided, meanwhile, the air inlet amount is reduced, and the dehumidification efficiency is improved.

The utility model relates to the technical field of clothes processing equipment, in particular to a fan and drying equipment comprising the fan, and aims to solve the problem that the drying efficiency of the drying equipment is poor due to the fact that the fan of the existing drying equipment is limited by the mounting space and the air volume is small. In order to achieve the purpose, the fan comprises a volute and an impeller installed in the volute, blades are arranged on the impeller, an exhaust channel is arranged between the outer ends of the blades and the first inner wall of the volute, the outer ends of the blades are the ends away from the center of the impeller, and a groove structure is arranged at the position, corresponding to the exhaust channel, of the second inner wall of the volute. The groove structure is sunken towards the outer side of the volute in the axis direction of the impeller so that the cross sectional area of the exhaust channel can be increased. According to the utility model, the groove structure which is sunken along the axial direction of the fan is arranged on the volute of the fan, so that the axial space of the fan can be fully utilized to increase the cross sectional area of the exhaust channel, and the drying efficiency of the drying equipment can be improved.

The utility model discloses a multi-layer staggered wind gathering mesh enclosure fan which comprises a wind gathering mesh enclosure multi-layer regular and irregular crossed structure, one end of the wind gathering mesh enclosure multi-layer structure is provided with an installation cavity playing a fixing role, and the end portion of the installation cavity is provided with a wind inlet cover. The air duct is lengthened through the multi-layer cross structure of the air gathering net cover, the air pressure is enhanced through the multi-layer cross structure of the air gathering net cover, the air gathering opening is formed in the end of the multi-layer cross structure of the air gathering net cover, and the air outlet end of the air gathering opening is subjected to necking treatment, so that the effect of increasing the air pressure is achieved; and the fan assembly is fixedly arranged in the mounting cavity, and the air inlet end of the fan assembly corresponds to the air inlet cover of the multi-layer structure of the air gathering net cover in position. The multi-layer cross structure of the wind gathering mesh enclosure is beneficial to concentrating wind power, so that the wind passes through the fan mesh enclosure in a more concentrated manner; and through the interaction of the first air gathering net and the second air gathering net, the formed air channel can further guide and concentrate the air flow, and the air pressure and the air volume of the whole system can be improved.

The utility model discloses a nitrogen replacement device for a converter gas holder, belongs to the technical field of converter gas holders, and solves the problems of low maintenance efficiency and high cost of the existing converter gas holder. The replacement device comprises a converter gas pressurizing machine, the input end of the converter gas pressurizing machine is communicated with a converter gas cabinet through an inlet pipeline, an inlet valve is arranged on the inlet pipeline, an air inlet is formed in the position, between the inlet valve and the converter gas pressurizing machine, of the inlet pipeline, a sealing plate is arranged on the air inlet, and the converter gas cabinet is arranged on the sealing plate. An outlet valve is arranged at the output end of the converter gas pressurizing machine, an outlet pipeline is arranged on the outlet valve, and the other end of the outlet pipeline is connected with the inlet pipeline. The nitrogen replacement device for the converter gas holder does not need to be connected with a special pipeline during operation, can effectively simplify operation, shorten replacement time and improve maintenance efficiency, and has the advantages of being convenient to use and high in practicability.