18results about How to "Avoid ventilation" patented technology

The invention provides a roadway type staged ventilation method, system and equipment for a high-altitude long tunnel, and belongs to the technical field of tunnel ventilation. Comprising the steps that a first ventilation system is arranged and used for completing a ventilation task in the transverse tunnel construction stage; entering a main tunnel construction stage after the transverse tunnel construction is completed, and constructing a second ventilation system on the basis of the first ventilation system; the second ventilation system is a ventilation scheme that four fans are formed on the basis of the two fans of the first ventilation system; uniformly dividing the ventilation mileage according to the position of the data acquisition sensor; a sensor system is arranged in each ventilation hole area, and the ventilation threat value of each ventilation hole area is evaluated according to data collected by a sensor; comparing the ventilation threat value of each ventilation hole area with a preset ventilation threat threshold value, and dynamically adjusting a ventilation scheme of the second ventilation system according to a comparison result; the concentration detection system and the return air detection system are arranged, the operation state of the fan is automatically adjusted, and therefore the ventilation effect of the high-altitude long tunnel is improved.

The invention discloses a dust-falling and air-exchanging device for tunnel construction and a working method, and relates to the technical field of tunnel construction equipment.The dust-falling and air-exchanging device for tunnel construction comprises a movable base, a rotating bottom plate, a gas filtering mechanism, an atomization dust-falling mechanism and a hose; the gas filtering mechanism comprises a filtering box, a filtering net, a movable sliding plate, a movable sliding seat, a tube bundle clamping hoop and an exhaust assembly, the atomization dust falling mechanism comprises a dust collection barrel and an atomization assembly, and by moving the base and rotating the bottom plate, the device can dynamically adjust the ventilation direction according to the actual airflow trend and dust distribution in a tunnel. Meanwhile, through cooperation of the movable sliding plate, the movable sliding seat and the pipe bundle hoop, air is evenly distributed on different portions of the filter screen, excessive accumulation of dust on the local portion is avoided, the local load of the filter screen is reduced, and therefore the service life of the filter screen is effectively prolonged, and the replacement frequency of the filter screen is reduced.

The utility model discloses a kind of drying device for wheat processing, it is related to the technical field of wheat processing drying, including base, the base top center is fixed with support pile, the support pile both sides are equipped with two load-bearing frames distributed in up and down, load-bearing frame inside is movably equipped with drying frame, same side two load-bearing frame between the same adjustment component is equipped with, for adjusting the distance between two drying frames, the adjustment component includes two L type limit rods, two L type limit rods are respectively arranged in bottom load-bearing frame front and back two sides, the front and back two sides of bottom load-bearing frame are all provided with sliding slot. The utility model moves by lifting and pulling top load-bearing frame and drives drying frame to move together, so that telescopic rod is stretched to support it, to realize the relative displacement between two load-bearing frames, it is convenient to adjust the distance between relative drying frame, avoid shading sunlight and ventilation effect, realize sufficient drying, improve drying effect and convenience.

The utility model relates to the technical field of protective clothing, and discloses a protective clothing with a heat preservation function, which comprises a protective clothing body, the rear side of the protective clothing body is fixedly connected with a shell, and the inner wall of the shell is provided with a heat preservation component. According to the protective clothing with the heat preservation function, heat in air is brought out of equipment through water and then dissipated through the heat dissipation fins, so that the air is kept in a cool state, part of the air passes through the air outlet cover and blows the spoiler, the spoiler scatters the air, the air is prevented from being directly blown to medical staff, air flow is evenly distributed, the situation that the local wind speed is too high is reduced, and the medical staff can feel comfortable. The other part of air enters the air cushion, the air cushion is inflated to expand, the heat insulation layer is isolated from the sweat absorption layer, heat conduction is further reduced, better heat insulation protection is provided, temperature rise in the protective garment is reduced, and comfort is further improved.

The present invention relates to the technical field of fire-resistant windows, and specifically to a heat-insulating aluminum alloy fire-resistant window with a reinforced structure, comprising a day window frame, a movable window and a hinge group connecting the day window frame and the movable window, a detection unit for detecting hot smoke is arranged above the movable window, the detection unit is embedded in a concave folded groove provided on the day window frame, the detection unit is distributed on a side of the day window frame facing the outdoors, and a smoke exhaust hole connected to the concave folded groove is provided on a side of the day window frame facing the indoors. The fire-resistant window of the present invention utilizes the diffusion of hot smoke during a fire to melt a hard plastic column, thereby automatically triggering a mechanical control, a spring releasing a driving force, and controlling the movable window to close through a transmission path, so that the fire is intercepted and sealed indoors, avoiding the problem of the fire expanding due to ventilation, and leaving time for people to escape or put out the fire.

The utility model discloses a self-adaptive tunnel portal shading system based on illumination intensity, and belongs to the technical field of road traffic safety. The solar visor assembly is arranged on the outer side of a tunnel portal, the lighting assembly is arranged on the inner side of the tunnel portal, and the solar visor assembly is in electric signal connection with the lighting assembly to supply power to the lighting assembly; the solar light shielding plate assembly comprises a bracket and a group of solar light shielding plates which are rotatably arranged on the bracket; the lighting assembly comprises a group of basic lighting lamps and reinforced lighting lamps which are arranged at the top of the tunnel; the tunnel portal is further provided with a light intensity sensor used for detecting the light intensity and a light-transmitting adjuster used for adjusting the illumination intensity of the illumination assembly. The rotatable solar light shielding plate is arranged in the solar light shielding plate assembly, and the angle between the solar light shielding plate and the ground can be adjusted according to needs, so that the light shielding area is adjusted, and the light transmission requirements under different conditions are met; and in cooperation with the lighting assembly, proper light intensity is provided for the tunnel entrance.

The utility model provides a tea leaf withering trough. The tea withering trough comprises a device body, the right side of the device body is fixedly connected with a protective shell, a motor is installed in the protective shell, the motor is fixedly connected with a transmission rod, the transmission rod is provided with a switching mechanism, the switching mechanism is provided with a first belt pulley, and the first belt pulley is internally provided with a forward limiting groove. A forward limiting disc is fixedly connected to the transmission rod, a forward limiting block is hinged to the forward limiting disc, a forward limiting spring is fixedly connected to the back face of the forward limiting block, a reverse limiting spring is fixedly connected to the transmission rod, and a reverse limiting block is fixedly connected to the other end of the reverse limiting spring. The left side of the second belt pulley is fixedly connected with a threaded lead screw, and the surface of the threaded lead screw is in threaded connection with a push plate. The tea leaf withering trough provided by the utility model has the effects of improving the tea leaf withering uniformity and reducing the labor cost.

The utility model relates to a ventilation pipeline and a ventilation assembly, comprising a ventilation pipe, at least one end of which forms an inclined port; the sealing cover is arranged at the inclined port of the ventilation pipe; the sealing cover is tightly attached to the inclined end opening of the ventilation pipe based on gravity. Due to the structure that the sealing cover is tightly attached to the inclined end opening of the ventilation pipe based on gravity, the ventilation pipe can be accurately opened according to the specific conditions of different areas in the farm, such as density distribution, temperature difference and humidity change of animals. The problem that in the prior art, due to the fact that all ventilation pipes are opened, ventilation of partial areas is excessive or insufficient is solved, the ideal ventilation effect is achieved, and more suitable environmental conditions are provided for a farm.

This invention discloses a composting method and intelligent composting system based on garden waste. The composting method based on garden waste provides a homogeneous and optimized material basis for efficient fermentation through intelligent pretreatment and dynamic formulation of raw materials. During fermentation, a three-dimensional sensor network is deployed and a synchronized digital twin model is constructed. The model is used to predict the future evolution of internal temperature, oxygen, and microbial activity within the compost pile. The degree of composting is intelligently determined by a multi-source information fusion model. The matured material undergoes multi-stage screening to produce a series of products, and a unique traceability code links the entire process to a digital archive, achieving quality traceability. This invention also provides an integrated system for implementing this method. This invention achieves predictive intelligent control and clean production in the composting process, significantly improving processing efficiency, product quality, and resource utilization, while effectively controlling operating costs and environmental pollution.

The utility model discloses a grain sliding pipe in a silo, which is adjustable in grain falling position and height and has a silo flattening effect, and relates to the technical field of grain storage. The grain sliding pipe in the silo comprises a main grain sliding pipe embedded in the upper conical cage section of the multi-channel ventilation column and a plurality of branch grain sliding pipes obliquely inserted and fixed to the upper end of the main grain sliding pipe in the circumferential direction, and the branch grain sliding pipes are automatically opened and closed through valves. By means of the multi-opening grain falling device, multi-opening grain falling can be carried out in the grain warehousing process, the falling position and height can be adjusted and controlled at any time, and the current situations of accumulation, grading, crushing and the like in the grain warehousing process are greatly improved. Due to the fact that multi-opening grain falling has the bin flattening function, the manual bin flattening workload can be greatly reduced, a large amount of manpower and material resource consumption is reduced, the warehousing cost is reduced, the grain feeding continuity is guaranteed, and the grain warehousing efficiency is greatly improved; meanwhile, along with the improvement of the current situations of grain accumulation, grading, crushing and the like, adverse effects on later-stage grain ventilation and fumigation can be avoided, and the stability of grain storage quality is ensured.

The invention relates to the technical field of civil engineering, particularly provides a reverse construction method for separating a main body structure from a supporting structure, and at least solves the problem of poor ventilation and lighting of a foundation pit. The reverse construction method comprises the steps that S1, engineering piles and steel stand columns in the projection range of a main building are constructed; s2, a first-layer beam-slab structure floor system higher than the preset elevation of the site is constructed, and the first-layer beam-slab structure floor system serves as an interface layer; s3, constructing a main building structure above the interface layer to a target layer; s4, earthwork below the interface layer is excavated to the base in a layered mode, and inter-column supports are arranged in a layered mode; s5, a bottom plate in the projection range of the main building is constructed, and a vertical component and a horizontal floor system between the interface layer and the bottom plate are constructed; and S6, the main building structure above the target floor is constructed to the top floor of the structure. The periphery of the projection area of the main building can be opened, and the ventilation and lighting conditions in the earth excavation period of the reverse building method are improved.

The invention relates to the technical field of orthopedic appliances, in particular to a scoliosis orthopedic appliance with a multi-point supporting mechanism, which comprises a shell, a winding rod is rotatably connected in the shell, a tightening belt is mounted on the winding rod, one end of the tightening belt is fixedly connected with an orthopedic seat through a first tensioning belt, and auxiliary seats are arranged on both sides of the top and bottom of the shell. Alternate abutting assemblies are arranged on the auxiliary seat and the shape correcting seat; according to the single-point supporting orthopedic device, the two sets of auxiliary seats are matched with one or more orthopedic seats, the single-point supporting orthopedic requirement of C-type scoliosis is met, and multi-point supporting orthopedic of S-type scoliosis is achieved; then the tightening belt is wound through the winding rod, the orthopedic base is promoted to conduct one-way orthopedic extrusion on the scoliosis position, and a pressure sensor and an external display screen are combined to assist a user in rapidly and accurately adjusting the orthopedic acting force.

The utility model discloses an active filter cabinet with deashing structures, which relates to the technical field of active filter cabinets and comprises an active filter cabinet body and a dustproof net, deashing mechanisms are arranged on two sides of the active filter cabinet body, each deashing mechanism is composed of a driving motor, a supporting shaft, a gear, a gear ring and a deashing brush, the supporting shafts are rotatably connected to the two sides of the active filtering cabinet body through bearings, and the outer surfaces of the supporting shafts are sleeved with the gears. According to the dust cleaning device, the dust cleaning mechanism is arranged, when the driving motor works, the output end of the driving motor drives the supporting shaft and the gear to rotate, the gear is in meshed connection with the gear ring, and the gear ring is in sliding connection with the supporting frame through the supporting column and the supporting groove, so that the gear ring and the dust cleaning brush rotate together; therefore, dust on the dustproof net can be cleaned through the dust cleaning brush, and the situation that the ventilation effect and the heat dissipation effect become poor due to the fact that the dust adheres to and is accumulated on the dustproof net can be prevented.

The utility model discloses a constant temperature incubator is used to oak seed culture, the support mechanism includes horizontal board, horizontal board is in common disposition several, and each horizontal board all is along vertical direction arrangement, and the surface both sides of each horizontal board all are provided circular opening, the horizontal board surface and located the circular opening all around all are passed and are provided with the outer through -hole, the horizontal board is located each horizontal board's inside all supports and rotates and is connected with the support ring, the bottom surface outside of support ring is fixedly connected with a plurality of push rods, each push rod all around support ring surface center of circle equidistance arrangement, the inside of each installation groove all can be inserted and install the seedling cup, in addition, the support ring and the top of installation groove can be fixed mounting frame through screw, the inside diameter of mounting frame is less than installation groove, and then the seedling cup of different diameter is placed on the top of support mechanism conveniently, installation groove and mounting frame all can support the seedling cup of inside, avoid and place the seedling cup unsteadily and lead to dump.

This utility model discloses a gravel material moisture content evaporation test chamber, including an outer chamber and an inner chamber disposed within the outer chamber. Both the outer and inner chambers are open-top, lidless boxes. The side and bottom plates of the outer chamber are not perforated, while the side and bottom plates of the inner chamber are evenly provided with multiple evaporation holes. Gaps are formed between the side and side plates of the outer and inner chambers, and between the bottom plates of the outer and inner chambers, to create an interstitial space. The thickness of the gap is not less than the maximum particle size of the gravel material. This utility model facilitates the evaporation of moisture content from the gravel material by evenly providing multiple evaporation holes on the side and bottom plates of the inner chamber. The absence of perforations on the side and bottom plates of the outer chamber prevents the simulated environment of the gravel material inside the inner chamber from being directly exposed to the atmosphere. The interstitial space between the outer and inner chambers allows for the filling of gravel material into the interstitial space during the test, thus synchronizing the evaporation state of the gravel material in the inner chamber with that of the actual gravel material across its entire cross-section.

The utility model relates to the technical field of elevator cars, in particular to a ventilation-adjustable elevator car which comprises a car body, a car door is arranged on the surface of the car body, an adjusting mechanism is arranged on the surface of the car body and comprises a fixing rod, the fixing rod is fixedly connected to the surface of the car body, and the car door is arranged on the surface of the car body. A fixing rod is fixedly connected to the surface of the lift car body, a sliding block is slidably connected to the surface of the fixing rod, a first motor is fixedly connected to the surface of the lift car body, a first lead screw is fixedly connected to an output shaft of the first motor, a first square nut is in threaded connection to the surface of the first lead screw, and the first square nut is fixedly connected to the upper surface of the sliding block. By changing the position of the ventilator at the top of the lift car body, the ventilation range of the interior of the lift car body is enlarged, ventilation dead corners and unsmooth ventilation in the lift car body are avoided, and the ventilation effect of the ventilator in the lift car body is improved.

The utility model discloses a battery bottom support, including battery bottom support body, set up on the battery bottom support body's exhaust hole and set up on the battery bottom support body's a plurality of bosses, the exhaust hole is used for discharging the gas of battery inside generation, the boss is used for placing the core of stacking, the boss top surface protrudes at the battery bottom support body bottom surface, when the core of stacking is placed in the boss top surface, and the clearance is formed between the core of stacking bottom surface and the battery bottom support body bottom surface, so that the core of stacking bottom surface is deformed and blocks the exhaust hole and influences the outward exhaust during the battery thermal runaway test process.

The underground coal conveying vestibule ventilation system comprises a fresh air handling unit, an air exhaust unit, an air supply pipe, an air exhaust pipe, a high-speed operation air supply pipe, a high-speed operation air exhaust pipe, a low-speed operation air supply outlet, a low-speed operation air exhaust outlet, a high-speed operation air exhaust outlet and a high-speed operation air supply outlet, and the fresh air handling unit is connected with the air supply pipe longitudinally arranged on one side of an underground vestibule; the air supply pipe is provided with a low-speed operation air supply outlet, the exhaust pipe is provided with a low-speed operation exhaust outlet, and the high-speed operation air supply pipe is arranged at the end, provided with the fresh air handling unit, of the underground vestibule and connected with the inlet end of the air supply pipe. The high-speed operation exhaust pipe is arranged at the end, provided with the exhaust unit, of the underground vestibule and connected with the outlet end of the exhaust pipe. Through reasonable arrangement of the air pipes, occupation of the inner space of the vestibule is reduced, and the requirement for large air volume during accident ventilation is met. The occupied space is small, and various working conditions can be met.