883 results about "Ventilation tube" patented technology

The invention belongs to the technical field of mine ventilation management and control, and particularly relates to an intelligent mine ventilation management and control method and system, and the method comprises the following steps: S1, data perception and fusion: collecting multi-source heterogeneous data from a ventilation facility, an environment sensor and a personnel positioning system through a multi-protocol data gateway, and generating a standardized data flow; s2, constructing and updating a digital twinborn body: driving and constructing the digital twinborn body of the mine ventilation system based on the standardized data flow; s3, intelligent deduction and decision making; s4, strategy execution and closed-loop control are carried out; and S5, edge autonomy. The heterogeneous data is integrated through the multi-protocol data gateway, and the standardized data stream is generated, so that a unified and high-quality data basis is provided for subsequent analysis, and the problem of information islands is solved. And the digital twin is dynamically calibrated based on real-time and feedback data, so that the simulation precision is remarkably improved, and the underground ventilation condition can be reflected more truly.

The application provides a kiln ventilation regulation device, comprising: a ventilation pipe; a protection shell is fixedly installed on the surface of the ventilation pipe, a connecting shell is fixedly installed on one side of the protection shell, a supporting plate is fixedly installed in the inner cavity of the ventilation pipe, a supporting rod is fixedly installed on the top of the supporting plate, and a supporting disc is fixedly installed on the top of the supporting rod. Through the design of the regulation assembly, the regulation assembly adopts a worm, a worm wheel, a rotating gear and an adjusting disc transmission structure, worm and worm wheel transmission improves stability, the rotating gear and the teeth can realize precise adjustment of the angle of the adjusting fan blade, the ventilation volume control error is reduced, the precision is improved compared with traditional manual adjustment, multiple adjusting fan blades are linked through adjusting rods and adjusting discs, the ventilation pipe inner cavity ventilation cross-sectional area can be changed synchronously, the airflow deflection problem of traditional single baffle adjustment is avoided, the kiln working condition rapid change demand is adapted, a sealing strip is arranged on the top of the adjusting fan blade, and heat loss caused by traditional baffle gap air leakage is avoided.

The invention relates to the technical field of ventilation assemblies, and discloses a medical negative pressure isolation ward ventilation regulation and control assembly which comprises a ward local wall body, a first ventilation pipe is installed in the ward local wall body, a second ventilation pipe is installed at the rear end of the first ventilation pipe through a side plate, and an external line disinfection pipe is installed on the inner side of the side plate. And an air inlet pipe is mounted at the rear end of the second ventilation pipe through a mounting plate. According to the medical negative pressure isolation ward ventilation regulation and control assembly, an external line disinfection pipe is installed between a first ventilation pipe and a second ventilation pipe, the positions of the two sides of the external line disinfection pipe are limited through side plates, meanwhile, a plug pin is installed in an installation sleeve to limit the position of the external line disinfection pipe, and the convenience of structure assembly and disassembly is ensured; and after the external wire disinfection pipe is detached, the bolt can be rotated to adjust the elasticity of the spring, and meanwhile, the activated carbon can be detached and replaced, so that the convenience is improved during subsequent maintenance.

The utility model belongs to the field of environment-friendly dust removal equipment, and particularly relates to a small-sized dust remover provided with a three-stage air filter, which comprises a small-sized dust remover, a secondary air filter arranged on the back of the small-sized dust remover, a three-stage air filter arranged on the side surface of the small-sized dust remover, a first filter element is arranged in the first shell, and the first air inlet is connected with an air outlet of a silencing pipe of the small dust remover through a ventilation pipe; the third-stage air filter comprises a second shell, a second filter element is arranged in the second shell, and the second air inlet is connected with the first air outlet through a ventilation pipe elbow. The two-stage and three-stage dust removal device realizes two-stage and three-stage dust removal, can be used for in-situ dust collection and three-stage dust removal of'clean workshops' or individual or several dust pollution source points of the'clean workshops', and solves the problem that the space height is limited by the height of the workshops.

The invention belongs to the technical field of green buildings, and particularly relates to an intelligent regulation and control cold storage system for a green building. And a greening land is arranged on the roof. The ventilation pipe and the air guide pipe are cooled through the heat conducting plate arranged at the bottom of the water tank, heat exchange is conducted between all the air blocking pieces on the right portion of the air guide box and water in the water tank, and then airflow flows at the low flow speed and makes contact with all the air blocking pieces on the right portion of the air guide box; the air flow is cooled through all the air blocking pieces on the right side of the air guiding box, when the air flow flows through the ventilation pipe and the air guiding pipe, the temperature of the air flow is reduced, the air guiding pipe is blocked through the two air blocking pieces, air is blown to the surface of the roof through the exhaust pipe, and therefore heat of the roof is taken away through the cooled air flow; and therefore, the surface of the roof is cooled, the temperature of the surface of the roof is reduced, the indoor temperature can be reduced, and energy consumption is reduced.

The application relates to the field of granulating and polishing, and particularly discloses a polishing device for a granulator, which comprises a machine body, a round pot rotatably arranged on the machine body, a ventilation pipe rotatably arranged on the machine body, the ventilation pipe being arranged in the round pot, the rotation axis of the ventilation pipe being consistent with the length direction of the machine body, and a rotating mechanism for rotating and adjusting the ventilation pipe being arranged on the machine body; the rotating mechanism comprises a rotating rod rotatably arranged on the machine body, and the ventilation pipe is arranged on the rotating rod; a moving plate is also slidably arranged on the machine body, the rotating rod is rotatably arranged on the moving plate, a sliding rail is fixedly connected to the machine body, an installation plate is arranged on the sliding rail, a supporting column is fixedly connected to the installation plate, an electric telescopic rod is fixedly connected to the machine body, the telescopic end of the electric telescopic rod is fixedly connected to the installation plate, the supporting column is slidably connected to the moving plate, and a driving mechanism for driving the moving plate is arranged on the machine body. The application has the effect of improving the uniform drying of materials.

The utility model belongs to the technical field of ventilation pipeline heat preservation, and particularly relates to a ventilation pipeline heat preservation assembly which comprises a ventilation pipe heat preservation assembly, a fixing assembly is installed on one side of the ventilation pipe heat preservation assembly, and an auxiliary splicing assembly is installed on the other side of the ventilation pipe heat preservation assembly. The ventilation pipe heat preservation assembly comprises a shell, a first clamping groove is formed in the outer wall of the shell, an inner heat preservation layer is fixedly connected to the interior of the shell, a sliding groove is formed in the side edge of the inner heat preservation layer, a sliding plate is slidably connected to the interior of the sliding groove, and a top cover is fixedly connected to the side edge of the sliding plate. A top heat preservation layer is fixedly connected into the top cover, the top cover and the shell form a sliding structure through a sliding plate and a sliding groove, and the shell and the inner heat preservation layer are integrally arranged. And the top heat preservation layer and the inner heat preservation layer are arranged and fixed through the top cover, so that the ventilation pipe can be better wrapped in the using process, and the heat preservation effect is achieved.

The utility model discloses an anti-icing electric heating crankcase ventilation pipe, and relates to the technical field of ventilation pipes, the anti-icing electric heating crankcase ventilation pipe comprises a heating assembly, and the heating assembly is used for heating the ventilation pipe; the protection assembly is compounded on the outer side of the heating assembly, and the protection assembly is used for protecting the heating assembly; the heating assembly comprises a protection assembly and a stabilizing assembly, the stabilizing assembly is arranged on the outer side of the protection assembly and used for improving the stability of the protection assembly, the heating assembly comprises a ventilation pipe, a plurality of mounting grooves are formed in the center of the surface of one side of the ventilation pipe, and the multiple mounting grooves are each provided with an electric heating wire. According to the utility model, the ventilation pipe can be heated, and the stability of the ventilation pipe can be improved, so that the outer surface of the pipeline can be prevented from being damaged, and the service life of the pipeline can be prolonged.

The utility model discloses a chicken farm fan monitoring device, and relates to the technical field of chicken farm related equipment. The device comprises a monitoring box, the top of the monitoring box is fixedly connected with a ventilation pipe, a fan is fixedly installed in the ventilation pipe, a heating pipe is fixedly connected in the ventilation pipe on the front side of the fan, the front side of the ventilation pipe is fixedly connected with a first annular spray pipe through a fixing support, and a first branch pipe is fixedly arranged on the outer wall of the first annular spray pipe. The temperature sensor, the humidity sensor and the ammonia concentration sensor can monitor the temperature, the humidity and the ammonia concentration in the chicken house in the chicken farm respectively, fresh air can be conveyed into the chicken house by driving the fan to rotate, and the heating pipe is matched with the fan to heat the chicken house. The interior of the henhouse can be heated and dehumidified, the interior of the henhouse can be humidified and cooled through cooperation of a first annular spray pipe, a first liquid pump and a fan, and the environment in the henhouse can be better monitored and maintained.

1. The name of the design product: respirator ventilation tube holder. 2. The use of the design product: ventilation tube holder for high flux respirator, to avoid falling off in use. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model relates to the technical field of fire protection and smoke exhaust, in particular to a fire protection and smoke exhaust ventilator with an air filtering function, which comprises a smoke exhaust ventilation pipe, the lower end of the smoke exhaust ventilation pipe is fixedly connected with a smoke inlet cover, and the middle of the outer surface of the smoke exhaust ventilation pipe is fixedly connected with three fixing blocks. The upper ends of the three fixing blocks are all provided with vertically-through fixing holes, the upper portion of the inner wall face of the smoke exhaust ventilation pipe is fixedly provided with an air exhaust assembly, the lower portion of the outer surface of the smoke exhaust ventilation pipe is provided with an internally-externally-through mounting clamping groove, and the lower portion of the inner wall face of the smoke exhaust ventilation pipe is provided with a connecting sleeve groove. And a filtering assembly is movably clamped in the mounting clamping groove, and a smoke discharging assembly is fixedly connected to the upper end of the smoke discharging ventilation pipe in a penetrating and inserting mode. According to the fire-fighting smoke exhaust ventilator with the air filtering function, a two-stage filtering structure is adopted, the air filtering efficiency and quality are greatly improved, the content of pollutants in exhausted smoke is effectively reduced, and the external environment is protected.

The utility model provides a thermal insulation layer pressurized anti-corrosion chimney, which relates to the technical field of anti-corrosion chimneys and comprises a chimney body, a chimney cap and a chassis, the chimney cap is arranged at the top of the chimney body, the chassis is fixedly connected to the bottom end of the chimney body, an air inlet is arranged on one side of the bottom end of the chimney body, and an air outlet is arranged on the other side of the chimney body. An air supply mechanism is arranged on one side of the air inlet, a noise elimination mechanism is arranged between the air supply mechanism and the air inlet, and the chimney body comprises an outer cylinder, a heat insulation layer and a lining; the fan is communicated with the connecting cover through the ventilation pipe, the connecting cover is installed at one end of the fixing sleeve, the fan conveys air pressure into the fixing sleeve through the ventilation pipe, and the silencing cylinder is clamped into the fixing sleeve through the clamping ring. The sound waves can excite air molecules in countless small holes in the silencing cylinder and the sound absorption sleeve to vibrate, and part of sound energy is consumed to overcome friction force and viscous force, so that silencing is achieved, and noise generated by conveying air pressure is reduced.

The utility model relates to the field of construction warning devices, in particular to a warning colored ribbon for municipal construction. The device is characterized in that a supporting column is vertically and fixedly arranged at the center of the upper surface of the base, a supporting plate is fixedly arranged at the top of the supporting column, an air blower is arranged on the upper surface of the supporting plate, air holes of the air blower penetrate through the supporting plate and are connected with a ventilation pipe, and the other end of the ventilation pipe penetrates through the center of the upper surface of an exhaust fan; a warning assembly is arranged below the exhaust fan, one side of the exhaust fan is fixedly connected with a first fixing plate, and the other end of the first fixing plate is hinged to a second fixing plate through a hinge. Different angles of the warning colored ribbons are adjusted through the hinges and the sliding seats, various risks caused by angle defects are avoided, 180-degree different angles of the warning colored ribbons can be achieved due to hinge joint of the hinges, different warning patterns or copywriting can be arranged on the warning colored ribbons to cope with different municipal construction conditions, and the warning colored ribbons are convenient to use. Therefore, the risk of construction accidents is reduced.

The invention relates to the technical field of medical instruments, and discloses an oropharyngeal ventilation device which comprises a wearable ventilation mechanism and a pre-tightening butt joint mechanism. The first ventilation pipe can be in inserted butt joint with an external gas conveying pipeline, and the elastic gas film is arranged on the periphery of one end of the first ventilation pipe and can generate pre-tightening clamping force on the external gas conveying pipeline. The annular piston can generate flowing pressure on the elastic gas film; and the spiral spring can generate elastic acting force on the annular piston. According to the oropharynx ventilation device, the maximum pre-tightening force of a pipeline for inputting gas from the outside in the insertion port can be controlled, once unplanned extubation occurs, the external input gas can be normally separated, and the ventilation pipe inserted into the throat of a patient can be retained, so that the secondary injury phenomenon caused by the unplanned extubation is prevented.

The utility model discloses a grain pile deep water retention cooling ventilation device, which comprises a fan, an air distribution box and a plurality of metal ventilation pipes, the fan is connected with an air inlet of the air distribution box, the air distribution box is provided with a plurality of air outlets, each air outlet is connected with one end of one metal ventilation pipe, and the other end of the metal ventilation pipe is connected with the fan. The other end of the metal ventilation pipe is arranged in a grain pile; when the deep sampler is used, the metal ventilation pipes are lowered to the bottom of a grain pile through the deep sampler, the upper ends of the metal ventilation pipes are connected to the air distribution boxes, each air distribution box can be connected with 5-6 metal ventilation pipes, and then a low-power fan is used for ventilation treatment, so that the deep ventilation cooling effect of the grain pile is achieved; therefore, the phenomenon of ventilation dead angles during ventilation and cold storage of the grain storage warehouse can be effectively solved through the metal ventilation pipe, and meanwhile the phenomenon that in order to reduce the phenomenon of local bottom layer heating, excessive loss of grain moisture is caused by using a centrifugal fan or a large amount of cost is generated by adopting a grain cooler can be avoided.

The invention discloses a metering current transformer, and belongs to the technical field of electric power metering equipment, the metering current transformer comprises a protection cover for protection, the top of the protection cover is provided with a heat dissipation box for air flowing, and the top of the heat dissipation box is provided with an air inlet for air entering; a fan used for increasing the air inlet amount is installed in the air inlet, a ventilation pipe is installed in the heat dissipation box, a conical frame used for extruding air is installed on the vertical inner wall of the ventilation pipe, a filter plate used for filtering air impurities is movably installed above the conical frame, and the filter plate is arranged in the ventilation pipe. According to the metering current transformer, the heat dissipation capability can be improved, and reduction of iron core magnetic conductivity, hysteresis loss and eddy-current loss caused by temperature rise can be prevented.

The present application relates to the technical field of ventilation pipe, in particular to an assembled composite ventilation pipe for large factory building, which comprises a transverse ventilation pipe, an adapter pipe, a longitudinal ventilation pipe and a wall, a water collecting box is arranged at the bottom of the transverse ventilation pipe outside the wall, the water collecting box is used for collecting ice water from the inner wall of the longitudinal ventilation pipe to prevent the ice water from flowing back to the inside of the transverse ventilation pipe, a water guiding mechanism is movably arranged in the water collecting box, the water guiding mechanism supports the ice water during the water collecting stage and releases the ice water when the liquid level in the water collecting box reaches a preset weight. The melted ice water is collected by the water collecting box, which prevents the ice water from staying in the transverse ventilation pipe and affecting the exhaust. Moreover, the gravity of the collected ice water drives the water guiding plate and the adjusting plate to move downward synchronously, and the guide plate rotates outward to guide the hot air flow to blow against the inner wall of the longitudinal ventilation pipe, which improves the ice melting effect and increases the pressure in the transverse ventilation pipe to improve the discharge speed of the ice water on the water guiding plate.

The utility model relates to the technical field of heat dissipation structures, and particularly discloses a heat dissipation structure for a spray head control panel, which comprises a mainboard, a fixed block fixed at the bottom end of the mainboard, a heat conduction plate arranged below the fixed block, a ventilation pipe fixed at the bottom end of the heat conduction plate, a fixed platform fixed below the ventilation pipe, and an equipment groove formed in the top end of the fixed platform. An adjusting mechanism is arranged at the bottom end of the equipment groove. The utility model has the advantages of flexible adjustment, reliable clamping, high heat dissipation efficiency and the like. And by arranging an adjusting mechanism composed of an elastic piece, a ball, a rotating rod and a baffle, quick clamping and releasing of nozzle control plates of different sizes can be achieved, operation is easy and convenient, and adaptability is high. Meanwhile, the heat conduction plate, the fixing block and the cooling fins form an efficient heat conduction path, a good air duct system is formed by combining the ventilation pipe and the ventilation holes, the overall heat dissipation performance is remarkably improved, equipment faults caused by high temperature are effectively prevented, the operation stability of the spray head control panel is improved, and the service life of the spray head control panel is prolonged.

The utility model discloses a vent pipe for industrial air exhaust, which comprises a plurality of groups of pipelines, the plurality of groups of pipelines are detachably connected, an inner connecting ring is movably connected between every two groups of pipelines, the outer wall of each inner connecting ring is fixedly connected with a rubber pad, cleaning components are arranged on the pipelines, one end of one group of pipelines is detachably connected with an air inlet pipe, and the other end of one group of pipelines is detachably connected with an air outlet pipe. One end of one pipeline is provided with an air inlet assembly, one end of the other pipeline is provided with an air outlet assembly, each pipeline is provided with a fixing assembly, the fixing assemblies are used for connecting the air inlet pipe, the pipelines and the air outlet assemblies, the pipelines can be conveniently spliced, installed and maintained through the fixing assemblies, and meanwhile the pipelines can be conveniently cleaned and maintained through the cleaning assemblies.

The invention discloses a ventilation system and construction method for a frozen soil roadbed slope in a high and cold snow area, and belongs to the technical field of frozen soil roadbed engineering. The ventilation system comprises longitudinal ventilation pipes, L-shaped ventilation pipes and transverse ventilation pipes arranged between every two adjacent longitudinal ventilation pipes at intervals; a wind direction control device is arranged at the joint of each longitudinal ventilation pipe and the corresponding transverse ventilation pipe, and wind is controlled to flow into the ventilation pipes with the higher temperature through the wind direction control devices. According to the system, through linkage cooperation of the wind direction control device and the active opening and closing device, active intervention and accurate adjustment of the roadbed temperature field are achieved in the ventilation pipe roadbed.

This invention discloses an adaptive cross-section flexible ventilation duct and method. Currently, ventilation ducts used in tunnel construction are mostly in regular geometric cross-sections such as circles and rectangles. This invention, located within a ventilation duct area on one side of the tunnel roof, includes a flexible duct. The cross-section of the flexible duct is a closed area formed by its lower, right, and upper boundaries. Airbags are provided on the outer surfaces of the lower and right boundaries. Each airbag includes multiple spaced longitudinal and transverse airbags. The longitudinal airbags are positioned along the tunnel length, and the transverse airbags are perpendicular to the longitudinal airbags. The two ends of each transverse airbag are connected to two adjacent longitudinal airbags. This invention employs an adaptive shape structure. During ventilation, the boundary of the flexible duct coincides with the area where the duct can be installed, maximizing space utilization, creating a larger ventilation area, thereby achieving a larger ventilation volume, and ultimately achieving a longer ventilation distance than circular ventilation ducts.

The utility model discloses a hog house ventilation device, which belongs to the technical field of hog house ventilation and comprises a ventilation pipe fixedly arranged inside a hog house roof, adjusting grooves are arranged in the ventilation pipe, the number of the adjusting grooves is in one-to-one correspondence with that of hog house units, and air outlet components are slidably arranged in the adjusting grooves and comprise air outlet pipes used for blowing air to the hog house units. And driving mechanisms in one-to-one correspondence with the air outlet assemblies in number are arranged in the ventilation pipe. According to the ventilation device for the hog house, the original installation mode of the ventilation pipe in the hog house does not need to be changed, needed functions are achieved through few structures, the improvement cost of the boar hog house is reduced, and only the ventilation pipe designed originally needs to be cut and filled with a simple structure.

The utility model discloses a fuming cupboard acid mist discharging device which is characterized in that a ventilation box is mounted at the top of a fuming cupboard, and a ventilation pipe is fixedly connected to the top of the ventilation box in a penetrating manner; the exhaust fan is arranged in the ventilation box, and a filter plate is inserted into the side part of the ventilation box in a sliding manner; the connecting mechanism is arranged on the side portion of the ventilation box, the connecting mechanism is used for separating the exhaust fan and the filter plate from the ventilation box, and the exhaust device further comprises an outlet pipe which is fixedly inserted into the top of the ventilation cabinet in a penetrating mode; and a positioning frame. The traction frame, the sealing frame, the traction plate, the positioning plate, the bearing frame, the positioning column and the connecting piece are matched with one another, the traction frame and the traction plate respectively support the exhaust fan and the filter plate, the positioning column and the bearing frame are used for connecting and supporting the exhaust fan, and the positioning plate is used for limiting and protecting the traction frame and the traction plate; the positioning plate is connected and positioned by the connecting piece, so that the exhaust fan and the filter screen can be directly separated from the ventilation box, and the exhaust fan and the filter plate can be taken out for maintenance.

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.

To reduce material cost and construction man-hours as compared with a pipeline of a conventional two pipeline ventilation system, and to enable application to a mid-to-high-rise building.SOLUTION: A drainage channel of one system is constituted by a combination of a vertical drainage pipe 2 and a horizontal drainage pipe 3 connected to a main drainage pipe 8, a bent part 4 is provided between the vertical drainage pipe 2 and the horizontal drainage pipe 3, a special drainage joint 5 capable of forming a ventilation space inside while passing drainage is provided in a part where drainage merges in the middle of the vertical drainage pipe 2, and a first ventilation pipe is connected to a lower part of the special drainage joint 5 positioned on a lower side while at least drainage of a building intermediate floor is passed in the drainage channel of each system. A second vent pipe 6b is connected to the lower part of a special drain joint 5 through which drain water on the lowest floor of a building is passed, a third vent pipe 6c is connected to the lower part of a bent part 4, and a pipe having a larger diameter than that before renewal is used as a horizontal drain pipe 3.SELECTED DRAWING: Figure 2

The application discloses a small animal independent ventilation non-magnetic cage feeding system for indoor air intake and exhaust in a sub-magnetic space, which comprises the following parts: an external magnetic field shielding room, a small animal feeding non-magnetic cage, a non-magnetic cage placing rack, a ventilation unit and an air purification unit and the like; the external magnetic field shielding room mainly shields the external geomagnetic field and provides a required sub-magnetic environment for small animal cultivation; the non-magnetic cage placing rack is mainly used for placing the small animal feeding non-magnetic cage and is equipped with independent ventilation pipelines required for small animal feeding and is also made of non-magnetic materials; the non-magnetic feeding system for small animal cultivation in the sub-magnetic space disclosed in the application is mainly used for in-depth research on the influence mechanism of the sub-magnetic field environment on living beings, so as to further improve the survival rate and life quality of astronauts in future space exploration and interstellar travel.

The utility model relates to a ventilation system for a food packaging workshop, and belongs to the technical field of food packaging, the lower surface of a ventilation pipe is provided with a humidity sensor, the upper surface of the ventilation pipe is provided with a humidifying box, the lower surface of the humidifying box is connected with a liquid discharge pipe in a connecting pipe, the lower end of the liquid discharge pipe is communicated with the connecting pipe, and the connecting pipe is connected with a ventilation pipe. Nozzles are symmetrically arranged on the lower surface of the connecting pipe, an exhaust fan is further arranged in the ventilation pipe, a positioning groove is formed in the outer side of the ventilation pipe, a box plate is clamped in the positioning groove, and two sets of filter screens are arranged on one side of the box plate. The temperature and humidity in the food packaging workshop can be monitored through the humidity sensor on the lower surface of the ventilation pipe, the infusion pump can be controlled through the controller to pump water in the food packaging workshop, the water enters the connecting pipe through the liquid discharging pipe, and finally the water is sprayed outwards through the spray head to achieve the humidification purpose. Therefore, the humidity of the food packaging workshop can be increased to improve the comfort of personnel.

The application relates to the field of three-dimensional louver air outlet, and discloses a novel three-dimensional louver air outlet structure which comprises a connecting pipe, a louver cover and a ventilation pipe. One end of the connecting pipe penetrates through a wall body to communicate with the outside, the louver cover is arranged on the outside of the wall body and is connected with the connecting pipe, the ventilation pipe is connected with the other end of the connecting pipe, limiting plates are arranged on the two sides of the end of the connecting pipe arranged on the outside of the wall body, connecting plates are arranged on the two sides of the back of the louver cover and correspond to the limiting plates, a plurality of fixing bolts are inserted into the connecting plates, the fixing bolts are fixedly connected with the wall body after penetrating through the corresponding connecting plates and limiting plates, the other end of the connecting pipe is inserted into the inside of the end side of the ventilation pipe, a plurality of connecting screws are arranged on the top side and the bottom side of the end of the ventilation pipe, the connecting screws penetrate the ventilation pipe and the connecting pipe through threads, and the louver cover is a three-dimensional structure. The application solves the problems that the indoor static pressure tank occupies large space and affects the stability of the wall body structure.

The utility model discloses a sucker structure with return fixing rings, which comprises a sucker base, the top end of the sucker base is fixedly communicated with a sucker top shell, the top end of the sucker top shell is fixedly communicated with a vent pipe, a connecting component is mounted in the vent pipe, and four return fixing blocks arranged in a rectangular shape are fixedly mounted at the bottom end of the inner wall of the sucker base. The connecting assembly comprises a connecting sleeve and three silica gel blocks, one side of each silica gel block is fixedly connected with the outer side of the connecting sleeve, and each of the four return fixing blocks comprises an assembling rubber block and a return fixing rubber block. The external vacuum pump adsorbs gas in the suction cup base in a vacuum mode through the pipeline, so that the suction cup base has adsorbability, the return fixing block clamps and fixes the suction cup from the outer side of the adsorption position, the stability of the suction cup after adsorption and fixation is improved, the phenomenon that the suction cup and the adsorption position are loosened is avoided, and the suction cup adsorption cost is reduced.