193 results about "Moisture flow" patented technology

The invention relates to the technical field of rotary cultivators, in particular to a rotary cultivator with a residual film recycling function. Comprising a front wheel; first rotating shafts are fixedly connected to one sides of the two front wheels, second rotating shafts are fixedly connected to one sides of the two rear wheels, a recycling machine shell is jointly and rotationally connected between the two first rotating shafts and the two second rotating shafts, and a tillage machine is arranged on one side of the recycling machine shell. Through cooperation of a water pump, a second threaded rod, a spraying bin and a spray head, broken films on a screen mesh plate can be dissolved, soil blocks can be decomposed, the problem that a large amount of time is spent on sorting residual films and straw by workers in the follow-up process is solved, a first motor, an air pump, a second motor and the water pump are controlled through a controller, and the working efficiency is improved. Complex residual film recovery and soil treatment processes are integrated into a highly automatic and intelligent operation system, the soil humidity, the residual film density and the impurity content are monitored in real time through a sensor, the suction force of an air pump and the water pressure of a water pump are intelligently adjusted, and soil moisture loss and energy consumption are reduced to the maximum extent while it is ensured that residual films are efficiently recovered.

The invention discloses a spray diverter, a spray header assembly and a method for diverting a liquid flow. The spray header assembly comprises a main body, a switch and a spray diverter assembly. The body defines a plurality of channels including an inlet channel and at least three outlet channels. The switch is configured to couple with the shower diverter assembly such that linear movement of the switch translates to rotational movement of a shutter of the shower diverter assembly. The shutter diverts water to one of the outlet channels, which causes the showerhead assembly to distribute water out of one of several discrete outlets.

The invention relates to the technical field of sewage discharge, in particular to a sunny and rainy day sewage diversion discharge device which comprises a recovery pipe, a sewage discharge pipe and a main body with the section being in a concave shape with an upward opening, a fixing cylinder is fixedly connected to the inner bottom wall of the main body, and a middle column is fixedly connected to the inner side wall of the fixing cylinder through a supporting rod; a water drainage mechanism is arranged in the main body, the water drainage mechanism is composed of a filtering part, a driving part, a discharging part and a control part, the filtering part comprises a filtering net, the filtering net is fixedly connected between the fixing cylinder and a middle column, and the middle column is rotationally connected with a rotating shaft in a penetrating mode through a bearing; the driving component comprises a plurality of driving shafts, the driving shafts are rotationally connected with the fixing cylinder and the middle column in a penetrating mode through bearings, and a cavity is formed in the middle column. The sewage diversion device has the advantages that the sewage diversion direction can be automatically adjusted according to sunny and rainy days, the automation degree is higher, the labor amount is greatly reduced, and diversion is more timely.

The utility model discloses an unpowered rainwater diversion and storage device, and belongs to the technical field of rainwater storage. The device comprises a diversion box, a filter box and a storage box which are communicated through a pipeline, the upper end of the diversion box is provided with a rainwater and sewage inlet, a partition plate is arranged in the diversion box, and the interior of the diversion box is divided into a rainwater and sewage containing cavity and a rainwater containing cavity by the partition plate; the rain and sewage accommodating cavity is communicated with the rain and sewage water inlet; a filter screen plate with holes is arranged on one side of the rainwater containing cavity, a limiting rod is further arranged in the rainwater containing cavity, a floating ball is arranged outside the limiting rod in a sliding mode, and connecting shafts are integrally arranged at the front end and the rear end of the floating ball. According to the utility model, the floating ball is driven to float by buoyancy generated by water level rising, so that the connecting pipeline is opened, unpowered rainwater storage is realized, the connecting pipeline is prevented from being automatically closed in the process that no rainwater flows and converges, and the effect of protecting the filter box and the storage box is further achieved.

The invention provides a vegetation planting device applied to sand stabilization treatment of a sand land, and relates to the field of sand stabilization treatment. The vegetation planting device applied to sand stabilization treatment of the sand land comprises a base, a detection mechanism is arranged on the outer wall of the front end of the base and comprises a fixing seat, a limiting groove is formed in the upper surface of the fixing seat, and a control block is clamped and matched with the inner wall of the limiting groove; a humidity sensor is fixedly connected to the middle of the outer wall of the rear end of the control block, a water level sensor is fixedly connected to the lower surface of the control block, and a water pump is arranged in the control block. According to the device, the auxiliary planting groove and the main planting groove are formed in the soil layer, and a user can sow some suitable grass seeds in the auxiliary planting groove, so that saplings in the main planting groove are assisted to grow, the possibility of soil desertification and water loss in soil is reduced, and then the using effect in the device is improved.

The invention provides a hydrogel-based radiation refrigeration moisture power generation material and a preparation method and application thereof, and belongs to the technical field of moisture power generation materials.The hydrogel-based radiation refrigeration moisture power generation material comprises a nano carbon black layer, a conductive hydrogel layer and a titanium dioxide layer which are sequentially stacked; the conductive hydrogel layer comprises a hydrogel matrix, a conductive filler and a temperature-sensitive material; the temperature-sensitive material comprises at least one of poly (N-isopropylacrylamide), a polyethylene glycol and polylactic acid copolymer and vanadium oxide; the cross section of the hydrogel-based radiation refrigeration moisture power generation material is of a W-shaped structure. The conductive hydrogel layer is of a three-dimensional network structure with conductivity and temperature-sensitive characteristics; the titanium dioxide layer realizes efficient sunlight reflection, the nano carbon black layer enhances heat conduction and conductivity, and the W-shaped structure promotes moisture flow and circulation; the multifunctional power generation device prepared based on the hydrogel-based radiation refrigeration moisture power generation material has good radiation refrigeration and moisture power generation performance, and is excellent in stability and durability.

The invention provides a freezing reinforcement project evaluation system and method based on hydrothermal coupling numerical model simulation, and relates to the technical field of computers and frozen soil engineering.According to the freezing reinforcement project evaluation system and method based on hydrothermal coupling numerical model simulation, a water flow equation and a heat transfer equation are established, and corresponding boundary and initial conditions are set; dividing a frozen soil reinforcement area into finite elements, discretizing an equation by utilizing a finite element method, iterating a global equation through a numerical solution method, simulating moisture and temperature changes in a freezing process, extracting key indexes, generating a freezing reinforcement energy efficiency index, comparing the freezing reinforcement energy efficiency index with a set efficiency interval, and evaluating a reinforcement engineering effect. And corresponding optimization suggestions are provided. According to the method, effective evaluation and optimization of the freezing reinforcement project are realized by establishing the hydrothermal coupling numerical model.

An electronic device is provided that includes a housing including a key hole and a vent hole, a button member including a body part disposed to cover the key hole and the vent hole, and a button protrusion inserted into the key hole, a substrate member including a switch actuated based on the button protrusion, a base disposed between the housing and the substrate member to cover the substrate member, a waterproof member including a sealing part, formed to protrude from the base to surround a perimeter at least one of the key hole and the vent hole, which has at least a part in close contact with the outer wall, a conduit for connecting an internal space and outside of the electronic device through the vent hole, and a waterproof cover disposed on the conduit so as to block moisture flowing in through the vent hole.

The application belongs to the technical field of road shoulder slip form, and specifically relates to an integrated shoulder protection slip form hopper with a concrete clumping prevention function, which comprises a stock bin and a screw feeder, the top of the stock bin is provided with a moisturizing cover plate, the moisturizing cover plate comprises a fixed cover plate and a movable cover plate in sliding fit, the bottom of the fixed cover plate is provided with a first sealing strip for sealing the inner side end and the front and rear ends of the top of the stock bin, the outer side of the bottom of the movable cover plate is provided with two second sealing strips in front and back opposite distribution through a rotating shaft, a spraying channel is symmetrically arranged inside the movable cover plate, and the bottom of the spraying channel is provided with a spraying hole. The moisturizing cover plate has the advantages of reducing water loss of the stock bin, spraying water flow into the stock bin and cooling the stock bin, and can prevent concrete clumping, thereby solving the problem of easy clumping of concrete in the stock bin in the prior art.

The draining device comprises a mop assembly, a draining pipe is arranged on the outer side of the mop assembly in a sleeved mode, a draining base is arranged at the bottom end of the draining pipe, a water outlet hole assembly is arranged on the peripheral face of the draining pipe, the water outlet hole assembly comprises a first water outlet hole and a second water outlet hole, and the first water outlet hole is communicated with the second water outlet hole. The first water outlet hole and the second water outlet hole are sequentially formed from top to bottom; a hollowed-out plate is arranged at the position, close to the bottom, of the draining base, and the lower portion of the hollowed-out plate is arranged in a suspended mode so that water on the mop can be drained out conveniently. The mop can be contained in the draining pipe by pulling the mop assembly, the bottom end of the draining pipe is used for being matched with the draining base for use, water in the mop can be squeezed out by continuously pulling the mop assembly, the squeezed water flows out from the water outlet holes and the hollow plate, and the water in the mop can be drained conveniently through single-person operation. And the sanitation of the mop in the dewatering process is ensured.

The utility model discloses rural domestic sewage and rainwater diversion equipment, and particularly relates to the technical field of rural domestic sewage and rainwater treatment, which comprises a water inlet pipeline, and one side of the end part of the water inlet pipeline is connected with a sewage pipeline. By arranging the fixing frame, the sliding column, the inserting plates, the gear, the toothed plate and other structures, when the water level sensor in the rain receiving cylinder detects that the water level reaches the standard, the sliding column can drive the two inserting plates to move relatively in the inserting opening, one inserting plate descends and seals a sewage pipeline, and the other inserting plate ascends to open a rainwater pipeline; on the contrary, the rainwater pipeline can be closed and the sewage pipeline can be opened by controlling the reverse lifting of the two inserting plates, so that the sewage in the ditch can be introduced into the sewage treatment system through the water inlet pipeline and the sewage pipeline, the operation is simple, and the operation is convenient. And diversion switching is convenient, stable and efficient, and the diversion effect of sewage and rainwater is greatly guaranteed.

The invention relates to a method and a device for acquiring a gas-water gravitational differentiation behavior in an oil reservoir considering an oil layer dip angle, and relates to the technical field of oil-gas field development. Comprising the following steps: based on a maximum distance criterion of migration of a gas-water mixed displacement area along an inclined displacement direction by a complete gravitational differentiation distance and a vertical water-drive reservoir thickness criterion after complete gas-water differentiation by a complete differentiation thickness or height; according to the water phase flow, the gas phase flow, the flow of the gas-water mixing area, the total flow, the gas flow-total flow of the injected fluid, the water flow-total flow of the injected fluid, the thickness of the oil reservoir, the water vapor and the gas-water differential velocity, a gravitational differential model of the oil reservoir is obtained; and inputting the basic parameters of the target water-gas alternate injection inclined oil reservoir into the oil reservoir gravitational differentiation model for calculation to obtain a gas-water gravitational differentiation behavior result of the target oil reservoir. According to the acquisition method provided by the invention, efficient prediction of the gravitational differentiation behavior of the oil reservoir developed by alternately injecting water and gas is realized.

The utility model discloses an air conditioner control panel assembly with a waterproof mechanism, which relates to the technical field of air conditioner control panels and comprises an outer mounting frame, lug plates are symmetrically and fixedly mounted at four corners of the outer part of the outer mounting frame, sliding grooves are symmetrically formed in four corners of the front end of the outer mounting frame, and a dismounting mechanism is mounted on the inner side of the outer mounting frame. A control panel is movably mounted in the mounting outer frame, a waterproof mechanism is arranged on the surface of the control panel, interfaces are symmetrically and fixedly connected to the surface of the upper end of the control panel, and a control panel is arranged on the surface of the lower end of the control panel. Through cooperation of the transverse drainage groove, the vertical drainage groove, the arc edge groove, the water absorption column, the bent groove, the top groove, the through opening and the drainage guide groove, water adsorbed on the surface of the panel flows into all the grooves and is sucked into the drainage guide groove through all the grooves, so that the water is discharged, and the moisture-proof and water-proof effects of the device are achieved.

The utility model relates to a main furnace of a waste incineration treatment furnace, which comprises a main furnace body, a conveying frame and a collecting tank, the water removal assembly comprises a tank body, a crushing box, a feeding hopper, a crushing motor, a driving gear, a driven gear, a first crushing roller, a second crushing roller, a water collection cone, a fixing rod and a flow guide hose, the crushing box is fixedly installed on the outer surface of the top end of the tank body, and the feeding hopper is welded to the outer surface of the upper end of the crushing box; and the crushing motor is fixedly mounted on one side of the crushing box. When the water removal assembly is used, garbage can be crushed through the crushing box, part of water in the garbage flows out, then the water flowing out is collected through the water collecting cone, and therefore the situation that excessive water enters the main incinerator body to affect garbage incineration can be avoided, and waste of a large amount of energy sources caused by incineration is avoided.

The utility model relates to the technical field of mud filtration, and provides a deep cone type mine mud soil geotextile tube bag method device which comprises a box body, an inclined plate fixedly installed on one side of the upper end of the interior of the box body, a plurality of through holes formed in the outer surface of the inclined plate, and a geotextile tube bag body arranged on the outer surface of the inclined plate, a connecting hose is arranged on the outer surface of the geotextile tube bag body; the connecting hose is connected with the draw-off pump, the draw-off pump conveys slurry into the geotextile tube bag body, the geotextile tube bag body is arranged on the outer surface of the inclined plate, the geotextile tube bag body can better accelerate outflow of internal water, the through holes are formed in the outer surface of the inclined plate, and the through holes are communicated with the inclined plate. And the baffle is fixedly installed on one side of the inclined plate, the baffle can block the geotextile pipe bag body and prevent the geotextile pipe bag body from sliding off from the outer surface of the inclined plate, and the through grooves are formed in the outer surface of the baffle, so that water can flow out conveniently.

The invention provides a substation cable trench solar chimney performance simulation method, a heat dissipation and dehumidification system and a substation, and the method comprises the steps: firstly obtaining the structural data of the substation, and determining the model information of a solar chimney according to the structural data; secondly, fluid numerical simulation is carried out according to the structural data and the model information, and the influence relation of each target parameter on the cable trench dehumidification effect is determined; verifying whether the influence relationship is accurate or not according to data measured by a transformer substation reduced scale experiment; and finally, when the influence relationship of each target parameter on the dehumidification effect is accurate, taking the influence relationship as a performance simulation result of the solar chimney. A solar chimney matched with the structure of a transformer substation is arranged, then numerical simulation is carried out, the influence relation between moisture flow in the transformer substation and the solar chimney and target parameters is solved after verification and serves as a simulation result, and therefore under which conditions, the solar chimney can be used for dehumidification, operation of a ventilation / dehumidification system is reduced, and the ventilation / dehumidification efficiency is improved. The operation cost is reduced.

The utility model discloses an adjustable cooling water shunting device of a machining center, which is applied to the technical field of machining centers and comprises a shunting box, the top and the bottom of the shunting box are respectively provided with a cooling water inlet and a greasy dirt outlet, the inside of the greasy dirt outlet is communicated with a greasy dirt pipeline in a sliding manner, and the top of the greasy dirt pipeline is welded with a fixed plate. The oil stain pipeline is driven to move up and down in the flow dividing box through buoyancy of the annular air bag in cooling water and oil stain. Therefore, even if the liquid level of the cooling water changes in height, the through hole can be always located at the top of the liquid level of the cooling water, an oil stain layer on the cooling water is discharged outwards through the oil stain outlet, and the diversion efficiency of the cooling water and the oil stain is guaranteed. Cooling water is filtered through the filter screen, and filtered workpiece chippings are pushed into the collecting groove to be stored through reciprocating sliding of the push plate on the top of the filter screen. And therefore, workpiece chippings in the cooling water can be conveniently cleaned, and the cooling water pipeline is prevented from being blocked.

Existing fabrics with moisture management functions only diffuse moisture on one side, and it is difficult to simultaneously ensure moisture absorption, diffusion, and reverse osmosis resistance, and they also lack washing durability and comfort. Therefore, we provide a fabric with better moisture management functions. [Solution] This fabric has moisture management properties and includes a texture layer 1 and a filling layer 2. The texture layer includes a waterproof / breathable layer 4, a hydrophobic layer 5, and a hydrophilic layer 6, while the filling layer includes a flow-guiding layer 7. These layers are arranged in this order from the skin side, with the waterproof / breathable layer being made of a hydrophobic fiber fabric with micrometer-level protrusions on the fiber surface. The fibers in the hydrophilic layer have a hollow, crisscross, multi-lobed, or microporous irregular cross-sectional structure, which rapidly expels moisture through the capillary effect. This allows for one-way moisture flow and prevents reverse osmosis, while also providing moisture absorption, diffusion, and reverse osmosis resistance. Furthermore, the fabric boasts excellent washability, breathability, and a pleasant texture, making it suitable for use in household and pet textiles.

The utility model relates to the technical field of nozzles, in particular to a gas-water shunting atomizing nozzle which comprises a nozzle body, the nozzle body comprises a main pipe, a water pipe is arranged in the main pipe, and an internal gas flow channel is arranged between the water pipe and the main pipe; one end of the main pipe is sleeved with a sealing connection nozzle body, and an air-water connection device is arranged on the sealing connection nozzle body in a matched mode; a nozzle device is arranged at the other end of the main pipe; the end, close to the nozzle device, of the water pipe is further provided with a flow dividing block. Due to the gas-water shunting design, atomized particles are smaller and more uniform, and the atomization efficiency is improved; the proportion and pressure of air and water can be adjusted, the spraying range and effect are flexibly changed, the adaptability is improved, the energy consumption is reduced, and the cost is reduced; the filtering function is achieved, the possibility of impurity blockage is reduced, and the service life is prolonged; meanwhile, mounting and dismounting are easy, and later maintenance or repair of workers is facilitated.

The invention discloses a volute humidity control method for a constant humidity cabinet, which belongs to the field of humidity control. The volute humidity control method for a constant humidity cabinet can greatly extend the flow path of a humid air flow in a smaller space through the setting of a volute shell, and can significantly improve the adsorption effect of moisture in the humid air flow by cooperating with a dehumidification layer wrapped on the surface of the volute shell to adsorb moisture in the humid air flow, and dehumidification is more sufficient. The wavy multiple protrusions on the surface of the dehumidification layer can increase the contact area with the humid air flow, and produce a certain obstruction to the humid air flow, thereby dispersing the humid air flow and enhancing the adsorption effect of moisture in the humid air flow. The comb plate inside the volute shell can support the volute shell, so that the volute shell is not easy to deform. At the same time, in the process of the humid air flow flowing along the inner side of the volute shell, the comb tooth end can play a role of squeezing and dispersing the humid air flow, so that the humid air flow is more fully in contact with the dehumidification layer, thereby improving the dehumidification effect.

The utility model relates to the technical field of swimming pool water treatment, in particular to a pressurized water outlet shunting type salt chlorine generator which comprises a main pipeline and a detection device, and an electrolysis device is mounted on the main pipeline; a first water outlet hole and a first water inlet hole are formed in the main pipeline, water flow in the main pipeline flows through the first water outlet hole from left to right, a second water inlet hole and a second water outlet hole are formed in the detection device, the first water outlet hole and the second water inlet hole are connected through a first pipeline, and the first water inlet hole and the second water outlet hole are connected through a second pipeline; a flow deflector is arranged on the right side of the first water outlet hole. The flow deflector is arranged on the right side of the first water outlet hole, when water flow flows into the main pipeline from left to right, part of the water flow strikes the flow deflector after passing through the first water outlet hole, the water flow is changed into longitudinal flow from transverse flow, the water pressure at the first water outlet hole is increased, and the water flow more smoothly flows into the detection device from the first water outlet hole.

This invention discloses a low-temperature desolventizing machine and its usage method, relating to the field of grain and oil deep processing technology. The low-temperature desolventizing machine includes a machine body and a steam-water integrated utilization device. The machine body includes a cylinder and a rotating mechanism. The cylinder includes a front end cover and a rear end cover located at its front and rear ends. The cylinder also includes an inner cylinder, which is equipped with a feed inlet, a front settling tank, a solvent gas inlet, a rear settling tank, and a discharge outlet. An outer jacket is provided outside the inner cylinder, comprising an annular jacket and multiple flow-guiding jackets. The steam-water integrated utilization device is connected to the flow-guiding jackets and the annular jacket via pipelines and can provide hot water circulation and flash steam heating to the inner cylinder. This invention uses hot water and flash steam instead of steam heating, changing the traditional A-cylinder / B-cylinder desolventizing method, and solving the problems of high residual solvent content, low nitrogen solubility index, dark color, high powder content, and large moisture loss in low-temperature meal, greatly reducing solvent and steam consumption.

The utility model belongs to the technical field of test pit water injection test equipment, and discloses a test pit water injection test device capable of preventing external interference, the test pit water injection test device comprises a protection assembly and a test assembly, the protection assembly comprises a side enclosure frame and a cover plate, and the side enclosure frame forms a test area; one ends of the two cover plates are detachably connected with each other; the test assembly comprises a support, a water supply bottle and an iron ring piece. The two ends of the support are detachably connected with the two opposite sides of the side enclosure frame respectively. At least one water supply bottle is inversely arranged on the support, a water level gauge is arranged on the water supply bottle, and a water outlet of the water supply bottle is connected with the iron ring piece through a water pipe; the iron ring piece is arranged below the support and connected with the support through the connecting rope. The protection assembly is arranged on the test assembly, so that a wind-proof and external interference protection cover does not exist during construction site and field work; the problems that the amount of water permeating into soil cannot be accurately measured and recorded due to excessive water loss or great influence of environmental factors, the permeability coefficient of the soil is difficult to accurately measure, and the requirements on measurement precision and efficiency cannot be met in the prior art are solved.

The utility model belongs to the field of textile fabrics, particularly relates to a moisture-absorbing and quick-drying brocade and cotton blended antibacterial fabric, and aims to solve the problems that the existing textile fabric is poor in moisture-absorbing and quick-drying effect and is easy to adhere to the body after being influenced by sweat, and provides the following scheme: the moisture-absorbing and quick-drying brocade and cotton blended antibacterial fabric comprises a moisture-absorbing layer and a hydrophobic layer, the hydrophobic layer is fixed at the bottom of the moisture-absorbing layer, and the moisture-absorbing and quick-drying brocade and cotton blended antibacterial fabric is arranged in the moisture-absorbing layer. The moisture absorption layer comprises warp and weft, the warp and the weft are woven in a staggered mode, the weft comprises a plurality of cotton fibers and nano-silver ion fibers, the cotton fibers and the nano-silver ion fibers are spun in a twisting mode, and the warp is formed by a plurality of nylon fibers in a twisting mode. Meanwhile, the hydrophobic fiber with the cross section design can increase the specific surface area of the fiber and improve the moisture guiding capacity of the fiber, the nylon fiber with the butterfly-shaped section design has high porosity, pores provide capillary channels for guiding sweat and moisture, and the drying speed can be increased.

The invention discloses a gas-liquid two-phase flow pipeline section volume fraction measuring device and method, and relates to the field of gas-liquid two-phase flow measurement, the measuring device comprises a gas-liquid supply pipeline system, the gas-liquid supply pipeline system comprises a gas-liquid supply pipeline, the gas-liquid supply pipeline is connected with a liquid storage tank, a gas-liquid separation tank, a water pump, a fan, a liquid phase flow detector and a gas phase flow detector; and the detection pipeline system is arranged to be capable of detecting the content of gas and liquid after forming circular flow with the gas-liquid supply pipeline system. According to the method, the content rates of the gas phase and the liquid phase of the section of the gas-liquid two-phase flow pipeline are accurately measured in real time, the virtual height correction function of the moisture flow meter is perfected, key parameters are provided, the accuracy of the gas-liquid two-phase measurement result of the moisture flow meter is improved, and in the testing process of obtaining the virtual height correction function for the moisture flow meter, the accuracy of the gas-liquid two-phase measurement result is improved. The purpose that the testing device can provide real-time and accurate gas phase and liquid phase holdup is achieved.

The invention discloses a method for enhancing tailing sand dehydration consolidation through electroosmosis to improve the stability of a tailing pond dam body, and belongs to the field of tailing sand dehydration treatment.The method is technically characterized by comprising the steps that a direct-current power source is started, and tailing sand electroosmosis dehydration is started; according to the pH value of the tailing sand solution and the size of the isoelectric point of the tailing sand, the positive and negative electrodes of the electrode plates of the dam body and the mountain body or the positive and negative electrodes of the electrode plates at the top and the bottom are adjusted in real time, so that water flows out from one side close to the dam body during left-right arrangement or flows out from the bottom side of the tailing sand during up-down arrangement.

The present embodiments relate to a steering control device and method. A steering control device may include a communication device configured to receive a steering angle sensing signal from a steering angle sensor installed at a lower part of a rack-pinion gear, a detector configured to detect whether of an inflow of moisture into a steering device based on the steering angle sensing signal and generate moisture detection information if the inflow of moisture is detected, and a controller configured to perform a risk prevention control to prevent risk due to the inflow of moisture based on the moisture detection information.

The application relates to the technical field of heat exchange equipment, and discloses a freeze-drying machine and a preparation process of freeze-dried sweetleaf chrysanthemum powder. The refrigerant provided by a compression refrigeration mechanism to each cooling support plate can lower the temperature inside a freezing cavity and maintain a low-temperature environment, and a negative pressure suction mechanism can suck the gas inside the freezing cavity, so that the negative pressure environment of the freezing cavity is maintained. The material inside each cooling tray is subjected to freeze-drying through the negative pressure and the low-temperature environment. During the freeze-drying process, external air is sucked in through an air flow cooling mechanism, and the external air is injected into the freezing cavity after being cooled by the refrigerant provided by the compression refrigeration mechanism. The air medium for the moisture flow inside the freezing cavity is provided, and the suction effect of the negative pressure suction mechanism promotes the discharge of the high-humidity gas inside the freezing cavity, so that the high-humidity environment in each region inside the freezing cavity is fully squeezed out through gas renewal, and the freeze-drying process inside the freezing cavity is promoted, and the freeze-drying effect is improved.

The invention provides an expansive soil moisture dynamic management and control device, and relates to the technical field of soil moisture management. A plurality of permeation assemblies; and a linkage assembly and a driving assembly. The device has the beneficial effects that when accumulated water is gathered on the ground, water in the upper soil layer is absorbed and discharged through the second permeation pipe on the upper portion, the problem that the air permeability and the water permeability of the upper soil layer are reduced due to expansion of the soil is effectively solved, and meanwhile the absorbed water flows into the first permeation pipe and is used for supplementing water into the lower soil layer; it is guaranteed that when plant roots grow downwards, water is provided for plants; under the condition of much rainwater, moisture in the upper soil layer is absorbed through the second permeation pipe, and the problem that the air permeability and the water permeability of the upper soil layer are reduced due to expansion of the soil is effectively relieved; under the drought condition, the soil of the bottom layer is humidified, water is provided for plant growth, and water absorbed by the soil of the upper layer is reduced.

The embodiment of the utility model provides a moisturizing drawer and a refrigerator, the moisturizing drawer comprises a drawer body, the drawer body is in sliding connection with a variable temperature chamber, and the top of the drawer body is provided with a first opening; the tray body covers the first opening, the tray body is movably connected with the drawer body, the tray body is movably connected with the temperature changing cavity, a second opening is formed in the top of the tray body, part of the bottom wall of the tray body is located in the drawer body, and part of the bottom wall of the tray body is lower than the first opening; the moisture permeable structure is arranged between the tray body and the drawer body, and air in the drawer body and air outside the drawer body flow through the moisture permeable structure. According to the technical scheme, the tray body on the upper portion is designed in a sinking mode, the moisture permeable structure is combined, the sealing performance of the drawer body is improved, and the problem of water loss of a traditional large-volume drawer is solved.