754 results about "Ventilation duct" patented technology

The utility model belongs to the technical field of electrical equipment, and particularly relates to clothes treatment equipment. The clothes treating equipment comprises a first cylinder and a second cylinder which are arranged in parallel; a drying member; the ventilation pipeline comprises a first connecting part, a second connecting part and a third connecting part, the first connecting part of the ventilation pipeline is connected with the first barrel, the second connecting part of the ventilation pipeline is connected with the second barrel, and the third connecting part of the ventilation pipeline is connected with the drying component; an air inlet, a first air outlet and a second air outlet which are communicated with one another are formed in a third connecting part of the ventilation pipeline, and the valve plate is rotatably arranged in the third connecting part of the ventilation pipeline and used for adjusting the air flow flux of the first air outlet and the second air outlet.

The UHPC assembly type machine room structure comprises a machine room enclosure bulkhead cylinder body, a first end cover and a second end cover, wherein the machine room enclosure bulkhead cylinder body is prefabricated by adopting an ultra-high performance concrete UHPC material; the machine room enclosure bulkhead cylinder body is provided with a bottom plate and two side walls, and the machine room enclosure bulkhead cylinder body is provided with a first opening end and a second opening end which are oppositely arranged; the first end cover and the second end cover are respectively arranged at the first opening end and the second opening end; the two end covers are provided with smoke suction and exhaust ports used for being connected with a ventilation pipeline. A machine room access door is arranged on one side wall; an internal smoke exhaust pipeline is arranged in the machine room enclosure bulkhead cylinder body, the two ends of the internal smoke exhaust pipeline are connected with the smoke suction and exhaust ports in the first end cover and the second end cover respectively, and the fan is arranged on the internal smoke exhaust pipeline. The UHPC shell is adopted and serves as an outer enclosure material of the machine room structure at the same time, the functions of enclosure, decoration, structural bearing and partial fire prevention are achieved, and building structure decoration and function integration is achieved.

The invention relates to a UHPC-based fabricated fire-fighting smoke exhaust fan room structure and a construction method thereof, the room structure comprises a main body structure, and the main body structure is prefabricated by adopting an ultra-high performance concrete UHPC material; a fan is arranged in the internal space of the main body structure; the main body structure is provided with a machine room enclosure bulkhead cylinder body and an end cover side wall. Wherein the machine room enclosure bulkhead cylinder body is provided with a bottom plate, a first side wall and a second side wall, the first side wall and the second side wall are connected with the bottom plate and vertically arranged in parallel, and a first opening end and a second opening end which are oppositely arranged are arranged at the two ends of the machine room enclosure bulkhead cylinder body in the horizontal direction respectively; the end cover side wall is provided with a first end cover and a second end cover which are respectively arranged at the first opening end and the second opening end; the first end cover and the second end cover are each provided with a smoke suction and exhaust port, and the smoke suction and exhaust ports are used for being connected with a ventilation pipeline. The UHPC shell is adopted, the advantages of being high in strength and good in fire resistance are achieved, the prefabricated assembly type structure is adopted, construction is convenient, and efficiency is high.

The utility model discloses a storage device for improving the stability of carbon black, which comprises a stock bin, a stirring mechanism and a ventilation mechanism are arranged in the stock bin, the stirring mechanism comprises a stirring shaft arranged in the stock bin and stirring blades arranged on the stirring shaft, the stirring blades are arranged in a multi-layer and multi-angle mode, the stock bin is communicated with a nitrogen storage tank, and the nitrogen storage tank is communicated with the ventilation mechanism. A first electric valve is arranged on a connecting pipeline of the stock bin and the nitrogen storage tank, an oxygen concentration sensor and a humidity sensor are arranged in the stock bin, and the oxygen concentration sensor is interlocked with the first electric valve; the ventilation mechanism comprises an annular ventilation pipeline arranged on the lower portion of the stock bin, a plurality of ventilation holes facing the stirring shaft are formed in the annular ventilation pipeline, and the annular ventilation pipeline communicates with an air blower. The humidity sensor is interlocked with the blower; an air outlet is formed in the top of the stock bin and sequentially communicated with the cyclone separator, the bag-type dust collector and the induced draft fan. The device can effectively prevent the carbon black from absorbing moisture, oxidizing and caking, so that the storage stability of the carbon black is improved, and the dust raising phenomenon can be effectively avoided.

The invention relates to an assembly type integrated fire-fighting smoke exhaust fan room structure which comprises a machine room enclosure bulkhead cylinder body which is provided with a bottom plate, a first side wall and a second side wall, the first side wall and the second side wall are connected with the bottom plate and vertically arranged in parallel, and the two ends of the machine room enclosure bulkhead cylinder body in the horizontal direction are provided with a first opening end and a second opening end which are oppositely arranged correspondingly; the end cover side wall is provided with a first end cover and a second end cover which are respectively arranged at the first opening end and the second opening end; smoke suction and exhaust ports are formed in the first end cover and the second end cover and are used for being connected with a ventilation pipeline; the machine room access door is arranged on the first side wall or the second side wall and can be opened and closed; the fan is arranged in an internal space formed by the machine room enclosure bulkhead cylinder body, the first end cover and the second end cover; the machine room enclosure bulkhead cylinder body, the first end cover, the second end cover and the machine room access door are all of a prefabricated concrete structure. The fabricated integrated design is adopted, the cost is low, the self weight is light, fireproof performance is achieved, and the advantages of being stable, reusable, attractive and the like are achieved.

This utility model discloses a spiral duct seam structure, relating to the field of ventilation duct technology. The structure includes a duct plate formed by rolling metal strip, with its seam edges connected by an interlocking structure. The interlocking structure consists of a left interlocking edge partially covering a right interlocking edge. The left interlocking edge sequentially includes a first windward section, a first double-layer pressing section, a second windward section, a first horizontal section, and a first vertical section; the right interlocking edge sequentially includes a second double-layer pressing section, a second vertical section, and a second horizontal section. The outer side of the first double-layer pressing section is pressed against the second horizontal section, the second vertical section, and the second double-layer pressing section on its upper, right, and lower sides, respectively. A reserved gap is provided between the two metal sheets of the first double-layer pressing section. By guiding and blocking dust from entering the reserved gap through the double windward sections, dust accumulation causes the gap to expand and compress the right interlocking edge, thereby adaptively enhancing the interlocking tightness and collecting dust, effectively preventing seam detachment and gas leakage, and improving ventilation quality and system safety.

The application relates to the technical field of ventilation ducts, and discloses a color steel antibacterial composite air pipe. In the application, the composite air pipe body is provided with a connecting frame one at one end and a connecting frame two at the other end, connecting screw holes are arranged at the four corners of the connecting frame one and the connecting frame two, a color steel plate layer is arranged outside the composite air pipe body, a heat preservation layer is arranged on one side of the color steel plate layer, an inner layer is arranged on one side of the heat preservation layer, an antibacterial layer is sprayed on the surface of one side of the inner layer, the inner layer is made of a high polymer material, the air flow resistance can be effectively reduced, ventilation is more smooth and efficient, the antibacterial layer can inhibit bacterial breeding, effectively improve air quality, provide health guarantee for indoor environment, the heat preservation layer can reduce heat loss in the heat transmission process, meet the building energy-saving demand, and the multilayer structure cooperates with each other, not only enhances the performance of the composite air pipe body, but also improves the durability and applicability of the composite air pipe body.

The utility model discloses drilling equipment for processing a ventilating duct, which comprises a base, the top of the base is fixedly connected with a support frame, the surface of the support frame is provided with a three-jaw chuck, and a rotating shaft of the three-jaw chuck penetrates through the support frame and is driven by a rotating motor. Through cooperation of the base, the three-jaw chuck, the sliding frame and the clamping block, the ventilation pipeline can be clamped, the ventilation pipeline can be driven to rotate automatically according to actual requirements, and then through cooperation of the movable frame, the bearing plate, the electric telescopic rod, the top plate and the drilling machine, the drilling machine can be transversely moved according to actual requirements; according to the drilling device, the surface of the ventilation pipeline can be drilled, at the moment, the drilling area can be covered through cooperation of a sliding column, a lifting block, a protection frame, a limiting groove and a limiting strip, and therefore chippings generated during drilling can be prevented from splashing everywhere, and the situation that the chippings pollute the environment can be reduced.

The application relates to a bag-in-bag-out filtering device, which relates to the technical field of biological safety and comprises the following: a ventilation duct is arranged in a box body; an air inlet and an air outlet are arranged on the box body and communicate with the ventilation duct; one or more filters are movably arranged in the ventilation duct; an opening is arranged on the box body and communicates with the ventilation duct; a sealing door is detachably arranged on the opening; a detection piece is arranged on one side of the box body close to the sealing door; and a frame body is arranged in the box body and abuts against the filter; the box body comprises a main body, an air inlet shell, an air outlet shell and a cover plate, and the ventilation duct is formed between the main body and the cover plate; the frame body and the main body are integrally bent and formed, one end of the frame body is embedded in the main body, and the other end of the frame body is bent and connected with the end of the main body. Compared with a traditional filtering box, the filtering device is integrally formed, welding leakage is avoided, the filtering device is not easy to deform, good sealing performance and pressure bearing strength are maintained, and the cost is reduced.

1. The name of the design product: pipe valve (DN250). 2. The use of the design product: for controlling the opening and closing of the ventilation pipe of toxic gas. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model relates to the field of building pipeline mounting, in particular to a ventilating duct suspender support mounting and fastening device which comprises a mounting wrench and a lifting guide device. The mounting wrench comprises a dowel bar which is a hollow pipe, a detachable hexagonal socket head is arranged at one end of the dowel bar, and a handle is arranged at the other end of the dowel bar; the lifting guide device comprises a supporting plate, elastic clamping devices are arranged at the two ends of the supporting plate, two guide sleeves arranged at intervals are arranged below the supporting plate in the length direction, the guide sleeves are perpendicular to the supporting plate, the guide sleeves are fixed to the supporting plate through guide sleeve connecting rods, and reserved mounting holes are formed in the positions, corresponding to the guide sleeves, of the supporting plate. The hole diameter of the reserved mounting hole is larger than that of an inner hole of the hexagonal socket head, and the hole diameter of the reserved mounting hole is smaller than the outer diameter of the hexagonal socket head. According to the utility model, a constructor can complete the mounting operation of the suspender bracket on the ground, so that the construction danger can be reduced while the operation of the constructor is facilitated.

The utility model discloses an adjustable ventilating duct of a biological fertilizer fermentation tank, which belongs to the field of ventilating ducts and comprises a ventilating duct body connected with the biological fertilizer fermentation tank, an electric air valve and a fan are fixedly connected between the ventilating duct body, and the air inlet end of the ventilating duct body is fixedly connected with an air filter screen through a mounting mechanism. By means of the arranged installation mechanism, the purpose of conveniently disassembling and assembling the air filter screen on the ventilation pipeline body can be achieved, compared with a traditional installation mode, the installation mode is easy to operate, the time and labor for installation and disassembly are greatly saved, and the working efficiency is improved; the damage to threads at the air inlet end of the ventilation pipeline body caused by frequent disassembly of bolts and nuts is avoided, the problem that the installation stability and the sealing performance of the ventilation pipeline body are reduced due to thread damage is solved, the service life of the ventilation pipeline body is prolonged, and normal operation of the ventilation pipeline body is guaranteed; therefore, the normal work of the biological fertilizer fermentation tank is ensured.

The invention discloses an internal circulation ventilation rotor of a high-speed permanent magnet motor and a preparation method thereof, and relates to the technical field of motor rotor preparation. The rotor comprises a rotating shaft, a silicon steel sheet circular ring, a permanent magnet and a sheath which are concentrically arranged from inside to outside in sequence; a straight-inclined ventilation duct is arranged in the rotating shaft, a spiral ventilation duct is arranged in the silicon steel sheet ring, and the straight-inclined ventilation duct and the spiral ventilation duct jointly form an internal circulation ventilation system in the rotor. The straight-inclined air duct pushes cooling air to flow in the axial direction by means of the pressure difference formed at the two ends of the air duct when the rotor rotates at a high speed. And the spiral air channel drives the gas to move along a spiral track by utilizing a centrifugal effect generated in a rotating process. Air circulation directions of the two ventilation ducts are opposite, and air cavities at the two ends of the rotor are connected, so that self-circulation of air in the motor rotor is achieved, the cooling effect of the rotor is enhanced, and an effective way is provided for solving the bottleneck problem that temperature rise of the high-speed permanent magnet motor rotor is too high.

The utility model discloses a wind speed adjusting mechanism for building ventilation, which comprises a ventilation pipeline, the left end of the ventilation pipeline is fixedly communicated with an exhaust pipe, and the right end of the ventilation pipeline is fixedly communicated with an air inlet pipe. When the air speed in the ventilation pipeline needs to be adjusted, the pull ring is pulled rightwards, the movable block and the clamping block can be driven to move rightwards, meanwhile, the spring is compressed, the clamping block is separated from the fixed clamping groove, then the fixed plate is pulled downwards, the baffle is driven to move downwards, the baffle descends to a proper position, and the air speed in the ventilation pipeline can be adjusted. Then the pull ring is loosened, the clamping block can be driven to conduct reset motion under the elastic force effect of the spring, then the clamping block is inserted into the fixing clamping groove with the corresponding height, through the steps, the ventilation area of the air inlet pipe can be changed by changing the relative position of the baffle and the air inlet pipe, and therefore the air speed in the ventilation pipeline is adjusted.

The utility model discloses a ventilation device for safety engineering of industry and trade enterprises, which comprises a ventilation pipeline, an air inlet and an air outlet, the protective screen plate is arranged at the position of an air inlet of the ventilation pipeline, and the protective screen plate is detachably connected with the ventilation pipeline; the air guide fan is arranged at the position, away from the air inlet, in the ventilation pipeline and used for guiding air; and the filtering assembly is arranged in the ventilating pipeline, is close to the air inlet and is used for filtering air. According to the ventilation device for the safety engineering of the industrial and trade enterprises, through the structural matching design of the ventilation pipeline, the protective screen plate, the air guide fan and the filtering assembly, the device can filter ventilated air, the situation that fluff drifts around to influence the environment is avoided, and through the structural design of the filtering assembly, the ventilation effect is improved. Therefore, the device can realize a double filtering effect and is convenient to replace and maintain.

The invention relates to the field of cable trench facilities, in particular to a cable trench with a built-in dehumidification function and a construction process and a dehumidification method of the cable trench. According to the invention, the S-shaped heating pipeline and the ventilating pipeline are pre-buried and are connected with the blowing device and the control system, and bottom heating evaporation and side wall air supply are combined to realize three-dimensional dehumidification, so that the internal humidity of the cable trench is remarkably reduced, and a dry and safe operation environment is provided for the cable. All functional pipelines and grounding grids are synchronously pre-buried in the civil engineering stage, strict plugging and fixing measures are adopted, the dehumidification function and the main body structure are integrally built, space is saved, and pre-burying precision and later implementation are guaranteed. Real-time humidity monitoring is carried out through the humidity sensor, dehumidification modes of different intensities are automatically started and stopped according to humidity values, intelligent and self-adaptive all-weather operation is achieved, the dehumidification efficiency is high, energy utilization is accurate, and the operation and maintenance cost and the manual operation intensity are greatly reduced.

This utility model discloses a waste heat recovery and utilization system for a printing workshop, including: a centralized pipe; and a connecting pipe, which is set on one side of the centralized pipe. The beneficial effects of this utility model are: by setting a worm, a worm wheel, and a rotating rod, the output end of the motor drives the worm to rotate, the worm drives the meshing worm wheel to rotate, and the worm wheel drives the rotating disk and scraper to rotate through the inner rotating rod. The scraper scrapes away the impurities filtered on one side of the filter screen, avoiding the accumulation of impurities on the filter screen and affecting the ventilation efficiency. The impurities are cleaned after the bottom sealing box is disassembled. By setting an exhaust pipe, a ventilation duct, and heat exchange fins, hot air enters the first branch pipe through the branch pipe, enters the exhaust pipe through the first branch pipe, and is conducted through the heat exchange fins in the exhaust pipe. The ventilation duct is connected to the printing workshop.

The utility model discloses a grain depot squat silo ventilation opening insect-proof net structure which comprises an annular support. A fine metal net is arranged on the inner side of the annular support, and the metal net is densely distributed in the whole inner side space of the annular support. An elastic ring is arranged on the outer side of the annular support, and the elastic ring is installed on the outer side of the annular support in a sleeving mode and is in tight fit with the inner wall of the ventilation opening. The inner side wall of the annular support is further provided with a plurality of adjusting bolts, the adjusting bolts are in threaded connection with the annular support, and the elastic ring is fixed to the inner wall of the ventilation opening in a pressing and covering mode along with screwing of the adjusting bolts. When the insect-proof net structure is adopted, the insect-proof net can be attached and fixed to the inner wall of the ventilation opening all the time under the compensation of the elastic ring and the adjustment of the adjusting bolt no matter the ventilation opening of the ventilation pipeline expands outwards or sinks inwards in the using process all the year round. Therefore, insects or birds are effectively prevented from entering the granary through the gaps.

This invention provides an air conditioner and a control method for the air conditioner. The air conditioner includes a housing and a filter assembly. The housing has a ventilation duct, a first air outlet, and a second air outlet. The filter assembly has an arc-shaped filter screen structure, which is rotatably arranged along a preset arc-shaped track to allow the filter screen structure to switch positions at the first and second air outlets. The air conditioner has two operating modes: a cooling mode and a heating mode. In cooling mode, the second air outlet serves as the air inlet, the first air outlet as the air outlet, and the filter screen structure rotates along the preset arc-shaped track to the second air outlet. In heating mode, the first air outlet serves as the air inlet, the second air outlet as the air outlet, and the filter screen structure rotates along the preset arc-shaped track to the first air outlet. This invention solves the problem in existing air conditioners where the air filter cannot automatically adjust its position according to the air conditioner's operating mode to optimize airflow.

The utility model provides an air supplement system which comprises a ventilation pipeline, a plurality of air supply pipes, a plurality of air supply pipes and a plurality of air supply pipes, wherein the ventilation pipeline is provided with an air inlet and an air outlet; the motor is arranged in the ventilation pipeline; the fan is arranged in the ventilation pipeline and is in driving connection with the motor; the current transformer is used for monitoring current flowing through a power line of the range hood; the input end of the controller is in communication connection with the output end of the current transformer, and the output end of the controller is in communication connection with the control end of the motor. According to the utility model, the current transformer is used for monitoring the current data flowing through the power line of the range hood, so that the controller can control the motor to be automatically started according to the change of the current data while the range hood is started, and then the fan is controlled to be automatically started for air supplement, thereby avoiding manual operation; and synchronous operation of air exhaust and air supplement in the kitchen is realized.

This invention discloses a coaxially linked reversible motor device and its adaptation method, belonging to the technical fields of motor equipment, electromechanical manufacturing, asynchronous induction power generation, and operating condition inverter adaptation. This invention abandons the inherent structure and design concept of traditional cylindrical asynchronous motors, innovatively adopting a coaxial linkage, circular vertical disk-type axial magnetic field integrated architecture. The stator is fixedly mounted on the main shaft bearing, the winding coils remain stationary, and the squirrel-cage rotors on both sides are locked and fixed to the main shaft on both sides of the stator, achieving high-precision coaxial synchronous rotation through the central bearing. The rotor features integrated heat dissipation blades, and the housing is equipped with open heat dissipation holes and external sealed ventilation ducts to achieve dual-mode heat dissipation. The two ends of the main shaft extend outwards, allowing for the detachable assembly of semi-circular and elliptical eccentric counterweights, enabling the device to also function as a stable vibration motor. Different specifications of fan blade assemblies can also be replaced at the shaft ends, enabling both active airflow for heat dissipation and coaxial self-generation through linkage with natural wind and airflow. It can be widely used in five major fields: rail transit, new energy vehicles, industrial machinery, aviation and ships, and civilian life. It has a high degree of functional integration and strong adaptability to various scenarios, and has extremely high promotion and application value and market practical value.

The present application belongs to the field of ventilation system, and provides a plant factory air supply pipeline, return air pipeline, ventilation pipeline and ventilation system, and the technical scheme is as follows: a cultivation plate with multiple plant planting baskets is placed on each layer of plant planting frame, an air supply pipeline is laid below each layer of cultivation plate, a plant growth LED lamp is arranged above each layer of cultivation plate, and a return air pipeline is laid above the plant growth LED lamp; the air supply pipeline and the return air pipeline both adopt a bionic structure, each stage of pipeline is connected with the next stage of pipeline with multiple branches, the air supply pipeline comprises a side air supply port and an upper air supply port, the upper air supply port is located above the last stage of air supply pipeline and uniformly supplies air upward, the side air supply port is located on both sides of the last stage of air supply pipeline and supplies air to the bottom of the planting basket, the return air pipeline comprises multiple return air ports, the return air ports are located below the last stage of return air pipeline and return air, and air flow formed among the side air supply port, the upper air supply port and the return air port passes through the plant growth LED lamp to realize air supply and cooling.

The utility model relates to a dangerous goods storehouse which comprises a storehouse body, a ventilation assembly and an early warning assembly. The ventilation assembly comprises a ventilation pipeline, a fan and a ventilation column body; the ventilation pipeline is provided with at least one communicating end and an air outlet end; at least one communication end is communicated with the storehouse body, and one communication end is communicated with the ventilation column body; the air outlet end is communicated with the outside; the fan is arranged on the ventilation pipeline and is communicated with the ventilation pipeline; a ventilation opening is formed in the lower part of at least one plate far away from the inner wall of the storehouse body; the early warning assembly comprises an alarm and a plurality of gas detectors; the alarm is arranged on the outer wall of the storeroom body and connected with the outer wall of the storeroom body; the plurality of gas detectors are arranged on the ventilation column body and are connected with the ventilation column body; through the arrangement of the ventilation column bodies, the gas detectors are arranged on the ventilation column bodies, and the arrangement positions of the detectors are concentrated, so that the overall layout of the warehouse is clean and tidy, and it is guaranteed that emergency situations can be handled in time.

The utility model provides a high sound intensity reverberation room ventilation noise elimination channel, which is applied to the noise elimination channel technology field, and comprises a resistive noise elimination section and a reactive noise elimination section to form a composite noise elimination channel, the resistive noise elimination section comprises a sheet type silencer and a maze silencer, one end of the sheet type silencer is provided with a static pressure box group, and the other end of the sheet type silencer is provided with a static pressure box group. The other end of the labyrinth silencer is connected with a resistance silencing section, the other end of the resistance silencing section is connected with a static pressure box connecting piece, the other end of the static pressure box connecting piece is connected with a ventilation pipeline through a soft connecting piece, and the other end of the ventilation pipeline is connected with an outlet pipeline. And an anti-bird net is arranged in the outlet pipeline. According to the ventilation noise elimination channel of the high-sound-intensity reverberation chamber, the static pressure boxes are arranged at the inlet and the outlet of the composite noise elimination channel, dynamic pressure in the channel is reduced through the characteristics of the static pressure boxes, and secondary noise pollution of airflow can be reduced.

The utility model relates to an assembly type building disinfection and purification system for a hospital fever outpatient service, and relates to the technical field of disinfection systems, the assembly type building disinfection and purification system comprises a ventilation pipe installed on the upper portion in a building, the two ends of the ventilation pipe are arranged outside the building, negative pressure fans are installed at the two ends of the ventilation pipe, and a ventilation pipe is fixed and communicated to the middle section of the ventilation pipe; the ventilation pipe is provided with a disinfection pipe, the disinfection pipe is arranged in the length direction of the ventilation pipe, a plurality of atomization nozzles are installed on the disinfection pipe, the disinfection pipe communicates with a conveying assembly used for conveying disinfectant into the disinfection pipe, and the two ends of the ventilation pipe are fixedly connected and communicate with waste discharge pipes. The waste discharge pipe is arranged below the negative pressure fan, and a blocking piece used for blocking the ventilation pipe is arranged at the ventilation pipe. The disinfection device has the effect of disinfecting the ventilation pipeline in the fabricated house.

The invention relates to a sail for a boat, comprising a sail body (1) provided with a base (2) and fans (3) in the sail body, wherein the sail body (1) is divided into sections (4), each section (4) comprising at least one fan (3). Preferably, in each section at least one fan (3) is positioned at a distal end relative to the base (2), and each fan (3) is connected to a ventilation duct (5) that guides the air flow generated by the fan (3) through one or more outlets (6) to the outside of the sail body (1). The invention discloses a sail for a boat that improves the aerodynamic efficiency of the sail.

The utility model relates to the field of ventilation, discloses a ventilating duct cleaning structure, and solves the problems that dust is difficult to naturally scatter, newly brushed dust is continuously adhered to accumulated dust to gradually form a compact dust layer, and the dust layer seriously hinders the subsequent cleaning efficiency of a brush, so that the cleaning efficiency of a ventilating duct is influenced. The utility model relates to a ventilation pipeline cleaning structure, in particular to a ventilation pipeline cleaning structure which aims at reducing the effective friction coefficient between a brush and the inner wall of a pipeline and further reducing the capability of removing dirt on the inner wall of the pipeline, and comprises a first pipeline, a second pipeline arranged on one side of the first pipeline and a rotating ring arranged between the first pipeline and the second pipeline. According to the pipeline cleaning device, the filter screen is arranged on the inner side of the first pipeline, the dust collector communicates with the outer side of the middle of the rotating ring, the swing mechanism is arranged, when rotating, the swing mechanism drives swing and rotates to the inner side of the pipeline, a brush can shake to enable dust to fall off, and therefore the risk that the cleaning effect is better is achieved.

The utility model belongs to the technical field of ventilation pipelines, and particularly relates to an air outlet channel hoisting structure for a central air conditioner, which comprises a pair of mounting plates, and lifting components are arranged in the mounting plates; the bottom of the lifting assembly is rotationally connected with a fixing plate. A sliding groove is formed in the inner wall of the fixing plate. The end of the sliding groove is slidably connected with a baffle. A clamping block is arranged in the sliding groove in a sliding fit mode. The bottom of the clamping block is fixedly connected with a ventilation pipeline body. The sliding groove is in a T shape. Through cooperation of the sliding grooves and the baffles, the clamping blocks can be quickly fixed through the baffles after being inserted into the fixing plates, and meanwhile, the T-shaped sliding grooves can be automatically supported after being inserted, so that the ventilation pipeline body is more convenient and faster to mount; and meanwhile, when the ventilation pipeline body is overhauled, the ventilation pipeline body can be quickly disassembled, and therefore convenience of the ventilation pipeline body is improved.

The utility model relates to the technical field of coal mine underground ventilation equipment, and particularly discloses a double-fan automatic switching intensive installation device which comprises a roadway air duct used for being connected with a tunneling working face ventilation system. The section of the air duct switching device is trapezoidal, the small end of the air duct switching device is communicated with the roadway air duct, and the large end of the air duct switching device is communicated with the double-fan box frame; the double-fan box frame comprises a first-layer box frame and a second-layer box frame which are stacked up and down, and fan fixing bases are arranged in the first-layer box frame and the second-layer box frame respectively and used for installing a main fan and a standby fan; the triangular air duct is arranged in the air duct switching device, an air outlet of the triangular air duct is communicated with the roadway air duct, and two air inlets of the triangular air duct are communicated with the first-layer box frame and the second-layer box frame respectively; according to the double-fan automatic switching intensive mounting device, through the design of one-key fan switching, centralized mounting and fixing, stable structure, easy maintenance and the like, the effects of improving the working efficiency, reducing the safety risk and facilitating moving and centralized management are achieved.

The application discloses a rotating wheel type humidity removal device, which comprises a regenerating fan, an adsorption type dehumidification rotating wheel, a heater, a filter one, a filter two, a main treatment fan, a cooling coil and a new ventilation pipeline, the suction inlet of the regenerating fan is connected with the adsorption type dehumidification rotating wheel, and the adsorption type dehumidification rotating wheel is further connected with the heater, the cooling coil and the new ventilation pipeline respectively. The rotating wheel type humidity removal device can ensure that the dew point value of the ultra-low dew point gas is not affected by the leakage of the pipeline during the process that the rotating wheel type dehumidifier reaches the use environment, ensure that the ultra-low dew point condition is consistent during use, and guarantee the use effect of the whole rotating wheel type dehumidifier.