47results about How to "Achieve drainage effect" patented technology

The invention provides a waterproof and cohesive layer exclusive for porous asphalt pavement, which comprises a structure as: a porous asphalt concrete surface layer (1), an emulsification asphalt cohesive layer (2) and a dense grad asphalt concrete surface layer (3) are orderly arranged from the upper side to the lower side, also a silicon rubber waterproof agent filtration layer (4) is arranged on or infiltrated the dense grad asphalt concrete surface layer (3). The invention can improve the waterproof property of the dense grad asphalt concrete surface layer under the porous asphalt concrete road surface, strengthens the cohesive property between the dense grad asphalt concrete surface layer and the porous asphalt concrete surface layer, prevents any moving between the porous asphalt surface layer and the dense grad asphalt concrete surface layer, effectively avoids water damages on the asphalt mixture which is resulted by rain infiltrating through the dense grad asphalt concrete surface layer, improves the waterproof property of the dense grad asphalt concrete, and improves the endurance of the dense grad asphalt surface layer of high-speed road and lengthens whole road surface service life.

The invention discloses a double-hole drainage pipe which is applied to an indoor drainage pipeline of a building and can be used for completing drainage and ventilation by a riser. The double-hole drainage pipe mainly comprises a straight pipe, a connector and a pipe fitting, wherein the straight pipe consists of an inner pipe 1 and an outer pipe 2, the inner pipe 1 is supported and fixed in the outer pipe 2 by a side wing 4 and a positioning tenon 5, concentric circles are formed by the inner pipe 1 and the outer pipe 2, a drainage hole is formed in the inner pipe, a vent hole 6 is formed in an annular channel between the inner pipe 1 and the outer pipe 2, the drainage riser is formed by one pipe, achieves a drainage effect of double risers but occupies less space compared with the double risers and is convenient to clean and maintain, and vents for connecting drainage with ventilation are uniformly distributed in the riser, so that the venting effect is good, the possibility of air blocking is low, and the drainage flow is large. The riser passes through a floor slab, and is convenient to connect and install compared with the double risers, so that the construction process is reduced, and the construction efficiency is improved.

The invention discloses a plastic track convenient to drain water. A drainage assembly is arranged on the top surface of a cement base layer, bottom plates are uniformly distributed on a drainage groove, and the bottom surface of a rubber surface layer is provided with a water guiding groove corresponding to the bottom ends of water permeating holes; and the top surface of a bottom coating is provided with a heat conduction assembly, one end, positioned in the drainage groove, of a first heat conduction piece is fixedly provided with a second heat conduction piece, and a heat conduction grooveis formed in the position, corresponding to a mesh cover, of the bottom surface of the rubber surface layer. According to the plastic track convenient to drain away the water, when the water is accumulated on the top surface of the plastic track, one part of the water flows into the drainage groove along the top surface of the rubber surface layer, and the other part of the water flows into the water guiding groove through sponge strips and then flows into the drainage groove to achieve the drainage effect; and when the plastic track heats up due to the scorchingsun exposure, heat can be transmitted along the rubber surface layer, graphite particles, the first heat conduction piece and the second heat conduction piece in sequence, then water is introduced into the drainage groove, the heat of the second heat conduction piece is taken away by the flowing water, so that the temperature of the plastic track can be effectively reduced, and the service life of the plastic track is prolonged.

The invention provides an electrically controlled water discharging device. The electrically controlled water discharging device comprises: a housing installed at the bottom of a water channel body and a solenoid valve; a lifting mechanism is arranged inside the housing; one end of the solenoid valve is connected with the lifting mechanism through a zipper, and the other end of the solenoid valveis electrically connected with a control mechanism, wherein the control mechanism is mounted on the water channel body. According to the electrically controlled water discharging device, the control mechanism sends an instruction to actuate the solenoid valve, lifting and lowering of the lifting mechanism are achieved, so as to achieve conduction and blockage between the water channel body and a sewage pipeline, so that a drainage effect can be achieved when a user's hand is not entering the water body, and the operation is convenient and reliable; in addition, the solenoid valve is independent of the housing, so that the solenoid valve is in a dry environment and the reliability of the solenoid valve is improved.

The invention relates to a plaza drainage brick based on a honeycomb structure. The plaza drainage brick is composed of brick bodies, a vertical drainage hole, settling ponds and horizontal semicircular drainage holes. Each brick body is hexagonal, and polygonal shallow water grooves, diagonal shallow water grooves and water inlet and drainage orifices are designed in the upper surface of the brick body A; and the water inlet and drainage orifices are located at six corners of the hexagon of the brick body A, and when the three brick bodies are spliced together, the vertical drainage hole in the shape of a regular hexagonal prism or a cylinder is formed at the three apexes. According to the plaza drainage brick, the plaza brick and a sewer channel are combined; since the hollow structure is formed by splicing, brick body raw materials and brick purchasing cost are saved; the plaza drainage brick can replace a plaza hollow brick and can be produced in a die-casting mode, the daily yield is increased, and the manufacturing cost is reduced; and the structure design is ingenious, a plurality of plaza drainage bricks are spliced together to form drainage holes in the horizontal direction, and the same drainage effect as the plaza hollow brick is achieved.

The invention discloses a tunnel primary support and waterproof and drainage combined system and a construction method. The tunnel primary support and waterproof and drainage combined system comprisesa hollow anchor rod arranged along the radial direction of a tunnel contour line, the hollow anchor rod is filled with gravels, and the inner wall of the tunnel contour line is provided with shotcrete; the hollow anchor rod is provided with a punched hole and is wrapped with geotextile; and a reinforcing mesh is arranged along the shotcrete. The hollow anchor rod is filled with the gravels and wrapped with the permeable geotextile, underground water in a tunnel permeates into the hollow anchor rod, the tunnel is filled with the anchor rod, the rigidity of the tunnel is improved, and deformation is prevented. Besides, the H-shaped side of I-shaped steel is coated with waterproof paint, the I-shaped steel abuts against the rock wall and is installed at the lower side of the hollow anchor rod, underground water and seepage water in the hollow anchor rod are guided and drained through the I-shaped steel and a shotcrete U-shaped groove, the drainage function is achieved, and the supportingand stabilizing functions of the hollow anchor rod are not affected.

The invention discloses a fuel cell purging system and a control method. The control method comprises the following steps of: after a galvanic pile stops power generation and starts purging, acquiring purging preset parameters of an air system and a hydrogen system, and control parameters of a thermal management system; controlling a rotating speed of an air compressor, an opening degree of a hydrogen inlet proportional valve and a rotating speed of a hydrogen circulating pump according to the purging preset parameters, controlling and selectively communicating a heat dissipation branch and a heating branch according to control parameters of a heat management system, and controlling on and off of a corresponding heat dissipater and a corresponding heater; and acquiring a change value of alternating current impedance in an electric pile, and controlling the ending of in-pile purging according to the change value of the internal resistance of the electric pile. Through switching of the heating branch and the heat dissipation branch, purging of moisture in the electric pile is accelerated.

A method for planting dragon fruit with grass to keep out the cold. The ground preparation is made into several rows of ridges, aisles are formed between the ridges, pitaya cultivation columns are buried on the ridges, and the columns between the pitaya cultivation columns on each ridge are The distance is 200~250cm, plant 4 dragon fruit plants around the dragon fruit cultivation column, on the ridge surface, sow different kinds of grass around the dragon fruit plants, during the whole growth period of the dragon fruit plants, do not weed on the ridge surface Use herbicides to only trim the grass. When the grass on the ridge grows to a height of 20-50 cm, trim the grass to 5 cm or less; weed the aisle. By not weeding on the ridge surface, using the grass quilt to keep the roots of the dragon fruit plants warm can prevent the roots of the dragon fruit from being frosted; the rotten grass can provide nutrients for the dragon fruit plants; It is discharged from the aisle to achieve a drainage effect and ensure the normal growth of dragon fruit plants.

The invention belongs to the technical field of fresh oyster processing. The fresh oyster cleaning and shell opening processing equipment comprises a first feeding and conveying mechanism, a cleaning device, a changeable single sorting and conveying device, a weighing and sorting device, a transferring and conveying device, a second feeding and conveying mechanism and a fresh oyster shell opening device which are arranged in sequence, according to the processing equipment disclosed by the invention, the cleaning device, the changeable single sorting and conveying device, the weighing and sorting device and the oyster shell opening device are mainly integrated on one production line, so that processing treatment such as cleaning, sorting and shell opening can be carried out on oysters on a single production line, the production speed can be increased, and the production efficiency can be improved.

The invention discloses a feed mixer for promoting fast growth of domestic pigs. The feed mixer comprises a shell, a feeding opening, a crushing mixing cavity, a first telescopic rod, a discharging cavity and a feed basin; the upper part of the left side of the shell is provided with the feeding opening; the lower part of the feeding opening is connected with the crushing mixing cavity; the rightside of the crushing mixing cavity is provided with a stirring box; the front side of the stirring box is provided with a front feeding opening; the rear side of the stirring box is provided with a rear discharging opening; the lower part of the stirring box is provided with the discharging cavity; the upper part of the right side of the discharging cavity is provided with a lower discharging opening; the upper part of the right side of the shell is provided with an electric telescopic device; the left side of the electric telescopic device is connected with the first telescopic rod; and the lower part of the discharging cavity is provided with the feed basin. According to the invention, quick and efficient crushing of feed can be realized, and meanwhile, a nutrient solution can be fully mixed with the feed, so that the feeding of the domestic pigs is facilitated, the purpose of energy conservation and environmental friendliness can be fully realized, the working efficiency is improved, and the chewing and digestion of domestic pigs are facilitated.

The invention discloses a drainage device. The drainage device consists of a gantry lifting device main body, a hanging frame and a hanging frame connecting rod, wherein the hanging frame is arranged below the hanging frame connecting rod; the gantry lifting device is respectively provided with an independent driving left motor and an independent driving right motor; the left motor is connected with the left end of the hanging frame connecting rod and can drive the left end of the hanging frame connecting rod to lift; the right motor is connected with the right end of the hanging frame connecting rod and can drive the right end of the hanging frame connecting rod to lift; and the left motor and the right motor are connected with a control unit. In the technical solution, the left and right motors of the gantry lifting device are independently actuated; two groups of positioning sensors with different heights are respectively arranged on two lifting columns; the two ends of the hanging frame are operated to lift to different heights so as to generate oblique and achieve drainage effect; the setting of the device can make an irregular geometrical component or a pipe fitting which is not easy to discharge medicament reduce the residual medicament on the component so as to improve the qualities of electroplate and electrophoresis; and the device is featured with easy installation, low cost and enterprise cost saving.

The invention relates to the technical field of heat exchangers and strengthened heat transfer devices, in particular to a three-phase interactive vortex heat exchanger and a strengthened heat transfer device. The three-phase interactive vortex heat exchanger comprises a barrel body, a heat exchange pipe, a second-phase inlet and a second-phase outlet, wherein one end of the barrel body is in bolt connection with a first flange through a first gasket; the first gasket is closely fitted between the barrel body and the first flange; 8 first bolts are uniformly distributed along the circumferential direction of the first flange in an equal spacing manner; the other end of the barrel body is in bolt connection with a second flange through a second gasket; the second gasket is closely fitted between the barrel body and the second flange; 8 second bolts are uniformly distributed along the circumferential direction of the second flange in an equal spacing manner; two baffling tube plates are arranged in the barrel body; one baffling tube plate is welded on the inner wall of the barrel body on one side of the first flange. The heat exchanger and the strengthened heat transfer device are high in heat transfer efficiency and low in heat resistance; three-phase heat transfer can be realized, the heat transfer time is shortened, the application range is enlarged, and the efficiency is improved.

The invention relates to the technical field of heat exchangers and strengthened heat transfer devices, in particular to a three-phase interactive vortex heat exchanger and a strengthened heat transfer device. The three-phase interactive vortex heat exchanger comprises a barrel body, a heat exchange pipe, a second-phase inlet and a second-phase outlet, wherein one end of the barrel body is in bolt connection with a first flange through a first gasket; the first gasket is closely fitted between the barrel body and the first flange; 8 first bolts are uniformly distributed along the circumferential direction of the first flange in an equal spacing manner; the other end of the barrel body is in bolt connection with a second flange through a second gasket; the second gasket is closely fitted between the barrel body and the second flange; 8 second bolts are uniformly distributed along the circumferential direction of the second flange in an equal spacing manner; two baffling tube plates are arranged in the barrel body; one baffling tube plate is welded on the inner wall of the barrel body on one side of the first flange. The heat exchanger and the strengthened heat transfer device are high in heat transfer efficiency and low in heat resistance; three-phase heat transfer can be realized, the heat transfer time is shortened, the application range is enlarged, and the efficiency is improved.

The invention discloses a double-hole drainage pipe which is applied to an indoor drainage pipeline of a building and can be used for completing drainage and ventilation by a riser. The double-hole drainage pipe mainly comprises a straight pipe, a connector and a pipe fitting, wherein the straight pipe consists of an inner pipe 1 and an outer pipe 2, the inner pipe 1 is supported and fixed in the outer pipe 2 by a side wing 4 and a positioning tenon 5, concentric circles are formed by the inner pipe 1 and the outer pipe 2, a drainage hole is formed in the inner pipe, a vent hole 6 is formed in an annular channel between the inner pipe 1 and the outer pipe 2, the drainage riser is formed by one pipe, achieves a drainage effect of double risers but occupies less space compared with the double risers and is convenient to clean and maintain, and vents for connecting drainage with ventilation are uniformly distributed in the riser, so that the venting effect is good, the possibility of air blocking is low, and the drainage flow is large. The riser passes through a floor slab, and is convenient to connect and install compared with the double risers, so that the construction process is reduced, and the construction efficiency is improved.

The invention provides a sound-controlled plunger which comprises a shell, a signal acquisition module and a controller, wherein a driver module is arranged in the shell; the signal acquisition moduleis electrically connected with the driver module and the signal acquisition module; a command signal transmitted by a user is acquired by the signal acquisition module and transmitted to the controller, the command signal is received by the controller, and the driver module is controlled to work. According to the sound-controlled plunger provided by the invention, opening and closing of the plunger can be realized by virtue of a voice command of the user, so that connection and isolation between the water tank and a sewer line can be realized. Furthermore, on one hand, under the condition that hands of the user do not enter water, the drainage effect can be achieved, and the operation is convenient and reliable; on the other hand, the condition that the water in the sewer line flows backinto the water tank to cause secondary pollution can be avoided, and the using reliability of the plunger is improved.

The invention discloses a throat pipe brick and a glass substrate manufacturing device. The invention relates to the technical field of TFT-LCD glass substrate manufacturing. The throat pipe brick comprises a throat pipe brick body, a throat pipe body and a cooling assembly; the throat pipe brick body and the throat pipe body are each of a hollow cylindrical structure; the throat pipe body is arranged in the throat pipe brick body; two ends of the throat pipe body respectively extend outwards along the radial direction to form folded edges with annular structures, and the two folded edges respectively coat two ends of the throat pipe brick body; the throat pipe brick body is used for connecting a pool wall brick of a pool furnace rear wall with a platinum channel inlet, and the cooling assembly sleeves the outer wall surface of the throat pipe brick body and is used for cooling the throat pipe brick body. The throat pipe brick can be used for uniformly cooling molten glass in the throat pipe brick along the circumferential direction.

The invention discloses a double J tube structure, which includes a tube body and a detection device fixed on the inner wall of the tube for detecting the flow rate and concentration of urine in the tube, and the detection device is wirelessly connected with an external terminal to detect urine After the flow rate and concentration, the flow rate signal and the concentration signal are output to the external terminal. The detection device includes a flow rate detector, a concentration detector and a wireless transmission board attached to the inner wall of the tube. The wireless transmission board is coupled with the analysis server. Then, both the flow rate detector and the concentration detector are wirelessly connected with the wireless transmission board. The double J tube structure of the present invention can effectively detect the flow rate and concentration of urine in the tube body through the detection device in the tube body, so that the flow rate signal and concentration signal can be effectively output to the external terminal, through After the analysis and processing of the external terminal, the function monitoring of the patient's kidney and ureter is realized.

The invention discloses a rotor assembly, a motor and a compressor, the rotor assembly comprises a rotor main body, a balance block, a fence and a fan, the rotor main body is provided with a plurality of vent holes, and the plurality of vent holes extend along the axial direction of the rotor main body to penetrate through the rotor main body; the balance block is arranged at one end of the rotor body and used for scattering a refrigerating medium discharged from a silencer of a compressor, the fence is arranged at one end of the rotor body and surrounds the balance block, and the fan is arranged at the other end of the rotor body. And the fan is used for promoting the refrigerating medium to be pumped from one end of the rotor main body to the other end of the rotor main body through the vent hole. According to the rotor assembly, the oil spitting amount of the compressor using the rotor assembly can be reduced, and the operation performance of the compressor is improved.

The invention discloses a high-sealing sliding window with hidden drainage structures. The high-sealing sliding window comprises a bottom frame profile, the bottom frame profile is mainly composed ofan outer frame profile body and an inner frame profile body, the outer frame profile body and the inner frame profile body are arranged side by side in parallel, and a gap is formed between the outerframe profile body and the inner frame profile body; C-shaped heat insulation strips are installed at the gaps between the outer frame profile body and the inner frame profile body, the hidden water drainage structures are installed in the outer frame profile body and the inner frame profile body, three sets of frame profile body are arranged on the upper surfaces of the outer frame profile body at intervals, and adjacent pulley installation grooves and sash transverse profile body installation grooves are formed among the three sets of frame profile body. According to the high-sealing slidingwindow, the hidden drainage structures are installed in the cavities of the outer frame profile body and the inner frame profile body, water outlet holes in the side walls of the drainage cavities flow out of the outer frame profile body, the drainage effect is achieved, the water outlet holes are formed in the outer wall of the outer frame profile body, drainage is not associated with the innerframe profile body, the sealing performance is improved, and the problem that the sliding window is low in water tightness is solved.

The invention relates to drainage equipment, in particular to multifunctional energy-saving drainage equipment for a reservoir. The multifunctional energy-saving drainage equipment for the reservoir guarantees flood discharge and discharge of the reservoir, and is convenient to operate, safe and reliable. The multifunctional energy-saving drainage equipment for the reservoir comprises a connecting plate frame and protective covers, and the protective covers are arranged on the two sides of the connecting plate frame; the power mechanism is arranged between the two protective covers; the waterwheel wheel discs are symmetrically arranged on the power mechanism, and the waterwheel wheel discs are matched with the protective cover; and the water source conveying mechanism is arranged on the connecting plate frame. By arranging the power mechanism and the water source conveying mechanism, the waterwheel wheel disc rotates to drive the power mechanism to move, then the water source conveying mechanism is driven to operate to rapidly drain water, and then the water drainage effect is achieved.

The invention discloses a fuel cell purge system and a control method, the control method of the fuel cell purge includes the following steps: after the electric stack stops generating power and starts purge, obtain the purge preset parameters of the air system and the hydrogen system , and the control parameters of the thermal management system; control the speed of the air compressor, the opening of the hydrogen inlet proportional valve and the speed of the hydrogen circulation pump according to the preset parameters of the purge, and control the speed of the hydrogen circulation pump according to the control of the thermal management system Parameter control selects the connection between the heat dissipation branch and the heating branch, and controls the opening and closing of the corresponding radiator and the heater; obtains the change value of the AC impedance in the stack, and according to the current The change value of the internal resistance of the stack controls the end of the purge in the stack. By switching between the heating branch and the heat dissipation branch, the moisture in the electric stack is quickly purged.

The invention discloses a connecting pipeline for a water conservancy irrigation station. The connecting pipeline comprises a pipeline shell and a drainage pipeline, and the pipeline shell and the drainage pipeline are of an integrated structure. The pipeline shell is internally provided with a first through hole structure. The drainage pipeline is internally provided with a second through hole structure. The two ends of the pipeline shell are each provided with a mounting structure. Each mounting structure is provided with a plurality of bolt holes. A limiting ring is welded to the part, located at one mounting structure, of the interior of the pipeline shell. The surface, located on one side of the mounting structure, of the limiting ring is connected with a baffle through a hinge. One end of the connecting pipeline is used for being connected to the end of an impeller pipeline. In practical application, internal air can be exhausted under the high-efficiency air exhaust action. Accordingly, water in a river can be pressed into the space around an impeller to achieve the drainage effect under the action of air pressure. By adopting the connecting pipeline, the labor intensity of labor workers can be effectively reduced, and the required time can be shortened.

The invention discloses a cooling and heat preservation assembly for a high-temperature magnetic drive pump. The cooling and heat preservation assembly comprises a cooling and heat preservation assembly body, the interior of the cooling and heat preservation assembly body is divided into a cooling and heat preservation inner cavity and a drainage inner cavity through a partition plate assembly, and a plurality of first drainage holes and second drainage holes are annularly and uniformly formed in the cooling and heat preservation inner cavity. As the interior of the cooling and heat preservation assembly body is divided into the cooling and heat preservation inner cavity and the drainage inner cavity through the partition plate assembly, and the multiple first drainage holes and the second drainage holes are annularly and uniformly formed in the cooling and heat preservation inner cavity, so that the problem that in the prior art, a pipe is welded in a cooling and heat preservation assembly body, due to the fact that the reserved position in the cooling and heat preservation assembly body is limited, the pipe can only be obliquely welded in a cooling hole in the cooling and heat preservation assembly body, and welding is not firm are solved, then a drainage loop is formed between a water inlet section and the first drainage holes, the drainage inner cavity and the second drainage holes from left to right without welding the pipe, and the drainage effect is achieved.

The embodiment of the invention provides an artificial intelligence diagnosis traffic operation and maintenance service management and control method and system. The method is used for a background server and comprises the following steps: acquiring a congested section of an urban road and a corresponding congestion condition; acquiring a bus route influenced by the urban road congestion section and a passenger waiting condition of each bus station corresponding to the bus route from an urban bus management system; passenger waiting conditions of light rail stations close to the bus stations are obtained from a light rail operation and maintenance system; receiving a bus station position and a target terminal point from the user side; and determining and executing drainage alarm information and a drainage control strategy of the light rail station according to the bus station position, the target terminal point, the congestion condition, the passenger waiting condition of the bus station and the passenger waiting condition of the light rail station. According to the artificial intelligence diagnosis traffic operation and maintenance service management and control method and system, coordination control and management can be carried out on various public traffics, and traffic diagnosis and cooperative evacuation of passengers are realized.

The invention relates to the technical field of waste express recycling, in particular to waste express package recycling equipment which comprises a shell and a control processor located at the right end of the shell, the right side of the top end of the shell is rotationally connected with an opening cover through a hinge, and the inner side of the right end of the shell is fixedly connected with a filter screen. According to the waste express package recycling equipment, by means of a fan, a material blocking slope, an air pipe, a fan cover and other components in a plastic bag sorting device, plastic bag packages and carton packages can be classified and recycled, and good practicability is achieved; when the fan starts to work, negative pressure can be generated on the right side of the top end of the shell, air can enter from the filter screen at the right end of the shell; and after the plastic bag sorting device works for a fixed time, two situations can occur, wherein one situation is that when expresses are packaged by plastic bags, the plastic bags can penetrate through transmission rollers located at the upper position and the lower position along with air circulation to enter the left side of the shell, and the other situation is that when the expresses are packaged by cartons, the cartons can be blocked by the material blocking slope and placed on the upper side of a material falling baffle.

The invention relates to the technical field of medical devices, and particularly discloses a medical intubation tube and a preparation method and use thereof. The medical intubation tube comprises atube body used for communicating with a to-be-drained part, an insertion end arranged at one end of the tube body, a drainage cavity formed in the tube body and a reinforcing part arranged in a side wall of the tube body and used for supporting the tube body. The reinforcing part is arranged in a middle of the tube body, a situation that the tube body is bent or tightly folded or blocked due to temperature changes or external pressure or other factors can be eradicated, the insertion end is connected with an external traction part, a clinical traction rope and the like can penetrate conveniently, therefore when the medical intubation tube makes contact with the to-be-drained part, a substance from the to-be-drained part is transferred to one end, away from the insertion end, of the tube body, a problem that an existing drainage intubation tube is greatly influenced by temperature changes, and consequently the tube body is prone to being bent in a drainage process is solved, and the medical intubation tube has wide market prospects.

The invention provides an overflow protection device for an induction cooker, and relates to the technical field of kitchen supplies. The overflow protection device comprises a cooker body, and a water inlet is formed in the top of the cooker body; a retaining ring is fixedly connected with the inner wall of the cooker body, and an electric contact I is fixedly connected with the inner top wall ofthe retaining ring; and water leakage holes uniformly distributed are formed in the bottom of the retaining ring. According to the overflow protection device for the induction cooker, through cooperative application of an electric contact III and an electric contact IV, and in the initial state, an electromagnet I and an electromagnet II are in a power-off state, and in case of overflow of the induction cooker, a floating block is moved upwards under the buoyancy effect of water, so that the electric contact I and an electric contact II are electrically connected; and the electromagnet I andthe electromagnet II are powered on. At the moment, the floating block is moved downwards under the magnetic attraction effect of the electromagnet I and the electromagnet II, and a conductive block is moved upwards under the effect of centrifugal force, so that the electric contact III and the electric contact IV are separated; thus, the effect of disconnecting a circuit of the induction cooker is achieved, and the circuit is effectively cut off; and the safety of the induction cooker is protected.

The invention provides an anchor spraying foundation surface water seepage drainage device and a construction method. The device comprises a PVC waterproof board, a galvanized steel pipe, a valve, filter screens, a mortar leveling layer, holes and a water-permeable material backfilling layer, wherein the galvanized steel pipe penetrates through the mortar leveling layer and the PVC waterproof board, the valve is arranged at one end of the galvanized steel pipe, the water-permeable material backfilling layer is arranged at the periphery of the other end of the galvanized steel pipe, and a portof the galvanized steel pipe is attached to the water seepage position; the holes are formed in the galvanized steel pipe penetrating through the PVC waterproof board, and the filter screens are arranged on the outer side of the galvanized steel pipe with the holes and on the portion, attached to the port of the water seepage position, of the galvanized steel pipe.

The invention discloses a device for cleaning the inner wall of the ventilation duct of a range hood. The structure includes: a cylindrical body, a cleaning disc mechanism, and an oil collecting hole. The oil hole runs through the upper and lower ends of the structure, and the beneficial effect of the present invention is to use the height difference between the diversion groove and the step plate of the cleaning disc mechanism to realize the drainage effect on the oil dirt, so that the grease dirt can be moved to the center along the diversion groove Accumulated, stacked oil film promotes structural changes to create downward suction to suck oil from the tapered groove, and can fit the inner wall of the range hood ventilation duct to achieve seamless connection with it and scrape and collect oil.