215results about How to "Improve ventilation" patented technology

This invention relates to the field of high-yield cultivation technology, specifically to a high-yield cultivation system and method for dwarfing and dense planting of star anise trees. The system includes a planning and setting module, a soil temperature sensing and monitoring module, a soil temperature analysis module, and a pruning and fertilization adjustment module. The soil temperature sensing and monitoring module includes several temperature sensors buried in the rhizosphere soil of the star anise trees. The soil temperature analysis module receives the daily average and daily difference values ​​of soil temperature collected by the soil temperature sensing and monitoring module, and converts them into information on the microbial activity of the planting soil and the canopy leaf density to regulate planting, pruning, and fertilization. The method includes S1 variety and rootstock selection, S2 dense planting planning, S3 planting and soil temperature monitoring and setting up, S4 pruning and fertilization of young trees, and S5 mature tree management. This invention solves the technical defects of traditional dwarfing and dense planting of star anise trees, such as the mismatch between uniform shaping management and tree growth needs caused by environmental heterogeneity, and yield fluctuations, by constructing a dynamic control system driven by soil temperature data.

The utility model discloses a cat bag for travel. The cat bag comprises a cat bag main body and a storage box body, the cat bag main body is provided with a ventilation system and a shielding structure for shielding sunlight; the storage box body is arranged at the bottom of the cat bag main body and is detachably connected with the cat bag main body. According to the portable cat bag, when the cat bag is carried out, the storage box body is mounted at the bottom of the cat bag main body; when snacks, toys, cleaning supplies and other articles of cats need to be taken out, the storage box body is separated from the main body of the cat bag, so that a pet owner can be prevented from frequently finding articles among different bags, and the storage box body is more convenient to carry and use. In addition, when the cat is put into the travel cat bag, the ventilation system is opened, so that the ventilation performance of the travel cat bag is improved, and the comfort of the cat is provided. When the sunlight is strong, the sunlight can be shielded through the shielding structure, so that the temperature in the cat bag is prevented from rapidly rising, and the comfort of a cat is not influenced.

The application provides a wind guide device and a ventilation system, comprising a base, a lifting rod, an angle adjusting mechanism and a wind guide plate. The base fixes the wind guide device in the air supply channel, the lifting rod is fixedly connected with the base, the angle adjusting mechanism is fixedly connected with the lifting rod, and the wind guide plate is rotationally connected with the angle adjusting mechanism. The lifting rod can adjust the height of the wind guide plate, and the angle adjusting mechanism can adjust the orientation of the wind guide plate. By adjusting the height and orientation of the wind guide plate, the wind guide plate can guide part of the air flow in the air supply channel to the working point located in the pillar construction area, and the part of the air flow will directly impact the dirty air accumulated at the working point, so as to strongly wash and dilute the dirty air. The diluted dirty air will be dispersed away from the working point under the double actions of air flow dispersion and natural diffusion, and finally flow into the air supply channel and be discharged, so that the ventilation effect at the working point is improved, the dirty air accumulation problem is solved, the occupational health and personal safety of the workers are ensured, and the safety hidden danger is eliminated.

The utility model relates to a damping type server case which comprises an outer case body and an inner frame body arranged in the outer case body, a gap is formed between the inner frame body and the outer case body, the inner frame body is defined by an inner bottom plate, an inner right side frame and an inner rear side frame, the inner bottom plate and the outer case body are supported through a plurality of sets of bottom damping pieces, and the bottom damping pieces are arranged in the outer case body. An L-shaped inner support is further arranged on the side, away from the inner right side frame, of the inner bottom plate, one end of the inner support is connected with the inner bottom plate, the other end of the inner support is connected with the top of the inner rear side frame, and the inner right side frame, the top of the inner support and the outer box body are supported through multiple sets of top damping pieces. The gap is formed between the outer box body and the inner frame body, and the damping pieces are arranged on the upper side and the lower side of the outer box body to conduct damping protection on the components on the inner frame body, so that the possibility that the components are damaged is reduced, and the stability of the server in the using process is guaranteed.

The utility model discloses a line board processing zinc spraying room with ventilation mechanism, including zinc spraying room, still include air intake mechanism, the air intake mechanism sets up on the outer wall of zinc spraying room bottom, the air intake mechanism includes air intake and air supply machine, zinc spraying gun, the zinc spraying gun is installed in the slider below zinc spraying room top crossbeam, follow -up ventilation mechanism, the follow -up ventilation mechanism sets up in the one side of slider, and the follow -up ventilation mechanism includes clamping seat, ventilation suction pipe, telescopic branch pipe and dust cover, dust removal fan, the dust removal fan is installed in the zinc spraying room top chamber inside of zinc spraying room top end, and the output of dust removal fan is equipped with air supply inclined pipe, spray settlement mechanism, the spray settlement mechanism is installed in the zinc spraying room top chamber top above air supply inclined pipe. The utility model not only adopts follow -up ventilation mechanism and captures zinc powder in time, prevents the diffusion to worker breathing area, and through the settlement treatment to zinc powder, reduced the harm that zinc powder directly discharged caused.

The utility model relates to the technical field of Pu'er tea pile fermentation, and discloses a pile fermentation device for improving the fermentation quality of Pu'er tea, which comprises a workbench, the bottom of the workbench is fixedly connected with a pile fermentation box, the front part of the pile fermentation box is provided with a blanking door, and the left side of the pile fermentation box is provided with a plugging mechanism. A discharging mechanism is arranged on the front portion of the pile fermentation box, the inserting and pulling mechanism is composed of a driving assembly and an auxiliary assembly, the auxiliary assembly comprises a moving block, an inserting and pulling rod, moving wheels, a sliding groove frame and a protruding block, the moving block is installed on the left side of the pile fermentation box, and the inserting and pulling rod is fixedly connected to the right side of the moving block. According to the Pu'er tea pile fermentation device, under the action of the moving block and the inserting and pulling rod, the inserting and pulling rod is inserted into a Pu'er tea pile in the Pu'er tea pile fermentation process, a certain hole is formed in the Pu'er tea pile, air can enter the Pu'er tea pile, the ventilation condition is improved, and a better oxygen condition is provided for activity of microorganisms.

The utility model belongs to the technical field of building curtain wall design, and particularly relates to a building curtain wall structure which comprises a single-layer main body, and a fixed rotary table is fixedly connected to the bottom of the single-layer main body. The inner side walls of the two fixed rotary tables are rotationally connected with a first fixed block and a second fixed block correspondingly. A window frame is fixedly connected to the side walls of the first fixing block and the second fixing block; a window frame is fixedly connected to the side wall of the window frame, and a curtain window is arranged in the window frame. Connecting plates are arranged between the adjacent second fixing blocks, and bolts are arranged between the second fixing blocks and the connecting plates. Rotatability of the building curtain wall structure is achieved by arranging the fixing rotary table, the first fixing blocks and the second fixing blocks, the common problem that high-altitude operation is needed for a traditional curtain wall structure is solved, the first fixing blocks and the second fixing blocks which are adjacent are connected through the connecting plates, stability and durability of the structure are enhanced, and the building curtain wall structure is convenient to use. And potential safety hazards can be reduced.

This utility model provides a novel universal power adapter, relating to the field of power adapter technology. It includes a housing assembly comprising an outer shell, an interface end cover, and a socket bottom cover. The socket bottom cover also includes an adapter circuit board mechanism disposed between the outer shell and the inner shell. A heat dissipation assembly comprises a heat dissipation sleeve embedded within the outer shell. A threaded heat-conducting plate is embedded in the heat dissipation sleeve. The threaded heat-conducting plate has a threaded structure, and the heat dissipation sleeve has annularly distributed heat dissipation holes. Heat generated during device operation is transferred to the outer shell and then conducted to the heat dissipation sleeve embedded therein. The threaded structure of the threaded heat-conducting plate increases the contact area with heat, efficiently absorbing heat and rapidly conducting it along the threaded path. The annularly distributed heat dissipation holes on the heat dissipation sleeve allow air to circulate inside and outside the sleeve. Hot air is discharged from the heat dissipation holes, and cool air is introduced, achieving continuous heat dissipation and maintaining a stable internal temperature of the device.

The utility model relates to the technical field of camping houses, and discloses a camping house for petroleum exploration, which comprises a living box body, two entrances and exits are symmetrically arranged on the side edges of the living box body, closing doors are rotatably mounted on the entrances and exits, a box body supporting assembly is arranged at the bottom of the living box body, and a box body is arranged on the box body supporting assembly. A box body supporting assembly is arranged at the bottom of the living box body, a moisture-proof height adjusting assembly is arranged on the box body supporting assembly, the box body supporting assembly and the moisture-proof height adjusting assembly are arranged at the bottom of the living box body, and a polyurethane foam plate and a waterproof sealing plate are arranged at the bottom of a supporting bottom plate in the box body supporting assembly. The polyurethane foam plate can improve the moisture-proof capacity of the bottom of the supporting bottom plate, so that the distance between the bottom of the living box body and the ground can be flexibly adjusted according to user requirements, the ventilation capacity of the bottom of the living box body is improved, and the box body supporting assembly at the bottom of the living box body can be effectively prevented from being easily affected with damp for a long time to be damaged; the service life is prolonged.

The utility model discloses a multilayer raisin drying net device with adjustable spacing, which comprises four vertical rods, and the four vertical rods are arranged in a square shape. Reinforcing rods are fixedly installed between the bottom portions of every two adjacent vertical rods. The four reinforcing rods form a square frame. A plurality of supporting rods are slidably connected between the front and rear vertical rods. A plurality of drying rods are arranged between the left and right corresponding supporting rods. The utility model relates to the technical field of raisin drying. The multilayer raisin drying net device with adjustable spacing can adjust the spacing between the layers of the drying net device and the spacing between the drying rods according to the actual drying requirements. When drying different amounts and sizes of raisins, the drying space can be freely changed to ensure good ventilation and illumination conditions, effectively avoid raisin stacking, significantly improve the drying efficiency and quality, and reduce the loss caused by improper drying.

The utility model relates to a cold-proof hanging door device of a large herbivorous animal museum. The cold-proof hanging door device of the large herbivorous animal museum comprises a sliding door arranged on the indoor side of a wall body, and the sliding door is configured to move in a reciprocating mode in the width direction of a door opening so as to open or close the door opening; the hanging door comprises a door plate, and the hanging door is located on the outdoor side of the wall body and arranged at the position corresponding to the door opening; the lifting rope is connected with the top of the lifting door, and the lifting rope is used for lifting or putting down the lifting door in the height direction of the door opening so as to open or shield the door opening; and the guide assembly is arranged on the outdoor side of the wall body, a sliding rail extending in the height direction of the door opening is defined by the guide assembly, and the hanging door is in sliding fit with the sliding rail. The cold-proof hanging door device of the large herbivorous animal museum is convenient to operate and good in cold-proof effect.

The utility model relates to a schoolbag technical field especially relates to an automatic fit adjusting air cushion spine protection schoolbag, including schoolbag main part and shoulder strap, the shoulder strap is sewn in the back surface of schoolbag main part, the middle longitudinal of back surface is provided with the spine protection pad, the spine protection pad includes continuous upper spine protection part and lower spine protection part, the upper spine protection part is flat structure, and its surface equal interval is provided with a plurality of first convex strips, the lower spine protection part is an arc structure, and its surface equal interval is provided with a plurality of second convex strips, the spine protection pad from outside to inside is sequentially provided with outer layer, upper layer, lower layer, wherein, the hardness of upper layer material is less than the hardness of lower layer material, the utility model improves the fit protection effect and use comfort degree of schoolbag to spine.

The utility model discloses a pet nest temperature control device of network control, include: frame unit, it includes house body, the house body bottom surface fixedly arranged with base, the house body top surface fixedly arranged with house cover, set up in the temperature control unit of frame unit inside, it includes temperature control portion and the installation portion at its rear end, the temperature control unit still includes the smell component, the temperature control unit is used for controlling and adjusting the temperature in the house body inside, set up in the habitat unit of frame unit inside, it includes the sheltering portion and the habitat portion at its inside. The utility model discloses through being provided with the cooperation work of temperature control portion and installation portion, makes the pet in the habitat of pet nest inside, can through the temperature of inside intelligent monitoring of sensor, thereby carries out the adjustment quickly, makes it always be in the temperature inside that pet adapts, and the whole habitat comfort feeling is stronger, and is favorable to the smell removal of pet nest, keeps the ventilation smooth, is favorable to pet development.

The utility model relates to the field of agricultural product feed storage, and discloses an agricultural product feed storage device with good dryness, which comprises a connecting box, the top of the connecting box is fixedly connected with a feed storage box, the inner wall of the feed storage box is provided with a plurality of air transmission holes, and the inner wall of the connecting box is fixedly connected with a plurality of ventilation plates. And the top of the connecting box is fixedly connected with an air transmission assembly providing the drying keeping capacity, the inner wall of the material storage box is fixedly connected with two fixing blocks, the outer portions of the fixing blocks are fixedly connected with air cylinders, and the outer portions of the air cylinders are fixedly connected with material pushing assemblies providing the shrinkage capacity. According to the structure, the storage quality of feed is improved, the mildew risk caused by moisture is reduced, meanwhile, the effects of prolonging the storage period of the feed and guaranteeing the nutritional value of the feed and the safety are achieved, meanwhile, the convenience and practicability of the device are improved, the cost is low, and maintenance is convenient.

The utility model discloses a fire-fighting smoke exhaust window capable of being opened by 70 degrees, and relates to the technical field of fire-fighting smoke exhaust windows. The aluminum alloy window comprises a latticed structure formed by aluminum alloy cross beams and aluminum alloy stand columns, and a plurality of opening windows are fixedly connected into grids formed by the aluminum alloy cross beams and the aluminum alloy stand columns. A plurality of steel pipes are fixedly connected to the intersection points of the aluminum alloy cross beams and the aluminum alloy stand columns in an inserted mode, a plurality of fixed windows are connected between the steel pipes through hardware, and a flat curtain wall is formed. The use of the aluminum alloy decorative pressing plate not only enhances the aesthetic degree of the curtain wall, but also provides a good protection effect, the arrangement of the opening window and the fixed window meets the requirements of ventilation, lighting and visual field of the curtain wall, the opening window can be produced in a pre-assembly mode and can be quickly mounted after arriving at the site, and the production cost is reduced. And a user can conveniently ventilate in the use process.

This utility model discloses a novel ventilated floor for grain storage and a grain storage facility. The novel ventilated floor comprises several floor panels, each rectangular in shape, which can be interlocked. Each floor panel contains a ventilation cavity, and ventilation holes communicating with the ventilation cavity are provided on all four sides of the floor panel. Multiple air outlets communicating with the ventilation cavity are provided on the top surface of the floor panel. This utility model embodiment ensures good ventilation performance while improving the convenience and safety of operations within the storage facility.

The utility model relates to a forced air cooling type energy storage battery PACK, which comprises a shell, two battery modules are arranged in the shell, each battery module comprises a plurality of battery cells arranged along a first direction, a ventilation duct is formed between two adjacent battery cells, a sealing partition plate is arranged on one side surface of each battery module along a second direction, and the two ends of each battery module are respectively connected with the shell in a sealing manner. A heat dissipation cavity which is used for accommodating the battery module and is communicated with the ventilation air duct is formed in the shell; a plurality of groups of air holes are formed in the sealing partition plate at intervals in the first direction, and each group of air holes comprises one or more through holes formed at intervals in the height direction; the air holes are correspondingly communicated with the ventilation air duct; an adjusting valve for adjusting the ventilation area is arranged in the through hole; a main air duct is formed between the two battery modules through the two sealing partition plates, and heat dissipation fans are arranged at outlets in the two ends of the main air duct respectively; and the shell is provided with a hollow area for ventilation. According to the utility model, the heat dissipation effect is improved, and the problem of poor temperature consistency of the battery module is solved.

The utility model discloses an energy-saving air interchanger for constructional engineering, which relates to the field of air interchangers and comprises an outer frame, two transverse plates are fixedly connected to the inner wall of an inner cavity of the outer frame, a motor is fixedly mounted on the outer wall of one transverse plate, an output shaft of the motor is in transmission connection with a driving shaft, and the driving shaft is rotatably connected with the other transverse plate. Fan blades are fixedly installed on the outer wall of the driving shaft, and a window frame is installed outside the outer frame through screws. According to the dust screen cleaning device, the circular plate is stirred to drive the threaded rod to rotate to generate synchronous position movement, so that the threaded rod is sequentially separated from the first threaded groove and the second threaded groove at the lower position, the C-shaped frame is conveniently stirred to adjust the cleaning brush to move to clean the dust screen, the dust screen can be cleaned without the help of an external tool, the cleaning force is controllable, and the cleaning efficiency is improved. The service life of the dustproof net is longer, and the clean dustproof net can prevent sundries from entering the ventilating fan and guarantee the ventilating effect of the ventilating fan to be better at the same time.

The utility model relates to the technical field of wasp breeding equipment, concretely relates to three -dimensional wasp breeding frame of adjustable interval, including left and right two groups of mutually symmetrical vertical beams, mutually symmetrical between two vertical beams in each group, the inside surface of two vertical beams in each group is fixedly installed with a plurality of slide rails, and the top and bottom of four vertical beams are fixedly installed with reinforcing beams, and the detachable installation of support plate is arranged between the two slide rails that left and right face each other, and the end plate body of support plate is located in the slide rail and is connected with the slide rail between sliding, a plurality of nest frames are fixedly installed on the upper surface of support plate, the nest frame part is provided with a protective screen cover, the end part rod body of slide rail is provided with a clamping hole, the outer sleeve pipe is fixedly installed on the front side plate body of support plate, the plug -in limiting rod is slidably connected in the outer sleeve pipe, and the plug -in limiting rod and the clamping hole are inserted and matched. The utility model can adjust interval, has the function of limiting, and is convenient to use.

The utility model relates to the technical field of breeding, specifically is a kind of breeding house ventilation device, including the fixed setting of ground breeding house still include air exchange mechanism and swing mechanism, air exchange mechanism includes fan, sliding assembly, and the inside of breeding house is set to sliding assembly, and fan is fixedly set on breeding house, swing mechanism includes swing plate, rotating assembly and transmission assembly, and transmission assembly is fixedly set on sliding assembly, and swing plate is fixedly set on transmission assembly, and the rotation of motor is controlled by controller, drives screw rod to rotate, makes sliding platform move under the action of screw rod, drives fan to move ventilation inside breeding house, carries out even ventilation inside breeding house, prevents the poor ventilation caused by the gathering of breeding object in one place.

The garbage can comprises a can body and a fan, a garbage bag is arranged on the inner wall of the can body in a sleeved mode and used for storing garbage, a ventilation air channel is formed in the can body, and a first air outlet communicated with the ventilation air channel is formed in the inner wall of the can body. The fan is arranged in the can body, the fan can rotate forwards or reversely and is used for blowing or exhausting air to the ventilation air channel, and when the fan exhausts air to the ventilation air channel, the first air outlet adsorbs the garbage bag to the inner wall of the can body. The garbage can is provided with the fan, residual air in the garbage can is pumped away through the ventilation opening, the garbage bag is adsorbed to the inner wall of the garbage can, the interior of the garbage can is ventilated through the ventilation opening, a user can conveniently sleeve the garbage can with bags, and the interior of the garbage can can be ventilated.

The utility model relates to the field of agricultural planting, in particular to an intelligent agricultural greenhouse. According to the intelligent agricultural greenhouse, photosynthesis can be carried out on crops in rainy days, meanwhile, the rolling shed is rotated to shield the ventilation net for shielding rain, ventilation is carried out through the ventilation net in sunny days, the crops are prevented from decaying, the survival rate of the crops is increased, and the ventilation effect is improved. An intelligent agricultural greenhouse comprises a connecting frame, supporting frames and the like, the number of the supporting frames is two, and the connecting frame is connected between the supporting frames. The ventilation net is used for ventilation, when it rains, the rolling shed is put down to shield the ventilation net, and meanwhile the LED plant growth lamp and the carbon dioxide generator are used in cooperation for photosynthesis; therefore, photosynthesis can be carried out on crops in rainy days, meanwhile, the rolling shed is rotated to shield the breathable net for shielding rain, ventilation is carried out through the breathable net in sunny days, the crops are prevented from rotting, and the survival rate and ventilation effect of the crops are improved.

The invention relates to the technical field of plant breeding, and discloses an oriental cherry rhododendron cutting seedling raising method and application thereof.The method comprises the steps of S1, facility and substrate preparation, specifically, seedling raising is conducted in a greenhouse, and Kanuma soil is selected as a cutting substrate; s2, cutting preparation: from mid-to-late May to early-to-mid September, selecting annual branches with semi-lignified upper parts and no plant diseases and insect pests of a rhododendron simsii plant as cuttings, cutting the cuttings into cuttings with the length of 10-15cm, reserving leaves on the cuttings, performing cutting seedling raising of the rhododendron simsii in a greenhouse, preparing an advanced monitoring system and a control system, and performing cutting seedling raising of the rhododendron simsii in the greenhouse. Air temperature and humidity, soil temperature and humidity and illumination intensity can be accurately monitored in real time, the cuttage method provides an effective way for vegetative propagation, excellent characters of stock plants can be reserved, meanwhile, direct digging of wild oriental cherry rhododendron in the cold highland area can be reduced through manual cuttage propagation, local fragile ecological balance can be maintained, and the survival rate of the wild oriental cherry rhododendron in the cold highland area is increased. And a virtuous circle of protection and utilization is realized.

The utility model relates to a ventilation equipment technical field discloses a kind of building ventilation flue, including ventilation pipe, the inside of ventilation pipe is provided with ventilation opening, the outside of ventilation pipe is provided with mounting connector, the outside fixed connection of the blower base is provided with blower, the bottom fixed connection of the hydraulic press base is provided with hydraulic press, the outside one side of ventilation opening is provided with wind shield plate.The utility model has the following advantages and effects: the threaded connection of the threaded interface of ventilation pipe and mounting connector is connected, then starting blower, make the flow of air pass through ventilation opening, then starting hydraulic press, make wind shield plate away from ventilation opening, ventilation opening opens, air blows out from ventilation opening to start ventilation in building, when the ventilation is not needed in some building indoor, close the hydraulic press in the inside of its corresponding building indoor ventilation pipe, no longer ventilate for it, and the effect that the effect of building ventilation flue installation is good and ventilation is good is realized through the above operation.

The utility model belongs to the technical field of sportswear, and particularly relates to sport pants. Comprise a trouser body and trouser legs arranged below the trouser body, and further comprise adjustable ventilation zippers arranged on the two sides of the trouser legs respectively. The magnetic type disconnecting mechanism comprises a first magnetic piece arranged on the inner side of the bottom of the trouser body, a second magnetic piece arranged on the outer side of the top of the trouser leg and mutually attracted with the first magnetic piece, a flexible magnetic bag wrapping the first magnetic piece and the second magnetic piece, and a trigger assembly used for cooperating with the adjustable ventilation zipper to complete trouser leg disconnecting; the adjustable ventilation zipper is used for enlarging the ventilation area of the legs. According to the utility model, through the cooperation between the adjustable ventilation zipper and the magnetic type dismounting mechanism, the dismounting process of the trouser legs is simplified, and the flexibility of ventilation adjustment of the sports trousers is improved.

The utility model relates to the technical field of ventilation equipment, especially a ventilation equipment for house building, which is provided with a ventilation mechanism capable of filtering external impurities, realizes the removal of external impurities of the filter screen, maintains long-term permeability, and optimizes the ventilation effect, comprising a ventilation frame, a mounting piece, a motor connecting frame, a rotary drive motor, a synchronous shaft, a rotary frame, springs, a brush holder, brushes and a filter screen, the rear part of the outer side of the ventilation frame is provided with the mounting piece, the rear part of the inner side of the ventilation frame is connected with the outer side of the rotary drive motor through the motor connecting frame, the output end of the rotary drive motor is connected with the rear side of the synchronous shaft, the front end of the synchronous shaft is connected with the rear middle part of the rotary frame, the rear end of the rotary frame is respectively connected with the front side of the brush holder through multiple groups of springs at the positions on both sides of the synchronous shaft, and each group of brush holders is respectively connected with a group of brushes at the rear side, the front side in the ventilation frame is provided with the filter screen, and the brushes are movably contacted on the front side of the filter screen.

The application provides an automobile seat ventilation system and an automobile seat. The ventilation system comprises a seat foam, a plurality of first ventilation holes are formed in the seat foam, a wind guide assembly is arranged on the seat foam, the wind guide assembly has a first ventilation area inside, the first ventilation area is communicated with the plurality of first ventilation holes, a ventilation fan is arranged on the side of the wind guide assembly away from the seat foam, the ventilation fan is used for driving gas to flow in the first ventilation holes and the first ventilation area, and a support structure is arranged on one side of the first ventilation area. The support structure can form a second ventilation area adjacent to the first ventilation area between the seat foam and the ventilation fan. The support structure is arranged to support the first ventilation area, so as to form the second ventilation area on one side of the first ventilation area, so that the gas can be driven by the ventilation fan to flow in the first ventilation area and the second ventilation area. The ventilation space and the wind speed of the ventilation system are increased, the problem of increased wind resistance caused by extrusion is effectively avoided, and the overall ventilation capacity of the ventilation system is greatly improved.

This utility model relates to the technical field of tea garden pruning machines, specifically, to a tea garden contour pruning machine with an arc-shaped blade assembly. It includes a crossbeam plate, on which two first hydraulic cylinders are fixedly mounted. Guide rails are mounted at the ends of the telescopic shafts of the two first hydraulic cylinders. Second hydraulic cylinders are fixedly mounted at the ends of the guide rails. An arc-shaped plate is mounted on the telescopic shaft of the second hydraulic cylinder. A lower panel is located at the center of the lower center of the arc-shaped plate. The lower panel is fixed to the arc-shaped plate by two fixed rods. Multiple side hinge plates are provided on both sides of the lower panel. The side hinge plates are hinged to the lower panel and to adjacent side hinge plates. The side hinge plates are angle-adjustable by a third hydraulic cylinder. Drive motors are fixedly mounted on both the lower panel and the side hinge plates. A short shaft is fixedly mounted at the end of the output shaft of the drive motor, and a set of pruning blades is mounted on the short shaft. This utility model effectively improves the adaptability of pruning and is convenient to use.

This utility model relates to the technical field of audible and visual alarm and emergency ventilation modules, particularly an audible and visual alarm and emergency ventilation module for abnormal environmental parameters in chicken houses. It includes a chicken house body, with a power supply box, an audible and visual alarm, and a sensor mounting slot installed on one side of the body. An air inlet assembly is installed on the right side of the body, an air outlet assembly is installed on the inner left side, and an exhaust fan is installed on the outer left side. This device filters the air entering and leaving the chicken house by installing removable filters at both the air inlet and outlet, reducing the impact of external dust on the internal environment. Simultaneously, when emergency ventilation is activated due to abnormal temperature and humidity, a reciprocating cleaning brush is installed outside the internal filter to prevent chicken feathers from being moved to the filter by the airflow and clogging the filter or fan, thus improving the ventilation effect inside the chicken house and better meeting the emergency ventilation needs.