56results about How to "To achieve the purpose of moisture-proof" patented technology

The invention discloses an intelligent electric cooker system capable of automatically cooking. The system comprises an electric cooker terminal and a monitoring terminal. The electric cooker terminal comprises a rice bin, an accommodation box and an electric cooker, and the accommodation box is arranged below the rice bin. The accommodation box is the rectangular box provided with an opening at the upper end, and is divided into a first tank and a second tank through a separator plate. The electric cooker is disposed inside the first tank. The rice bin is cuboid-shaped. A rice feeding mechanism communicated with the electric cooker is arranged at the portion, corresponding to the electric cooker, of the bottom surface of the rice bin. The housing of the rice bin is internally provided with a thermal insulation layer. The rice bin also comprises a temperature sensor, a cooling device and a heating device. The electric cooker terminal also comprises a first control module and a touch control panel, and the touch control panel is arranged on the outer side wall of the first tank. According to the invention, the electric cooker can be remotely controlled to automatically cook, the temperature of the interior of the rice bin arranged above the electric cooker can keep constant, the storage for rice is facilitated, and the intelligent degree of the electric cooker is improved.

The invention relates to a battery case, in particular to a drawer type battery case which comprises a drawer case, a positive plate, a negative spring and an outer case, wherein the drawer case is connected with an output wire; a battery cavity capable of accommodating a battery is formed in the drawer case; the positive plate and the negative spring are arranged at two inner ends of the battery cavity; the drawer case is arranged in the outer case; the outer walls at both sides of the outer case are provided with bayonets; the outer walls at both sides of an end cover plate of the drawer case are provided with elastic clamps buckled with the bayonets; the edge of the inner wall of the end cover plate is provided with a sealing gasket; the output wire is led out of a wire outlet hole in an outer case shell; and the wire outlet hole and the output wire are sealed through a sealing column. Due to the adoption of the structure, the invention has the advantages that: the drawer type battery case is easy to manufacture, and has low cost and high moisture resistance; and most importantly, the battery can be replaced rapidly and conveniently.

The invention provides an electroosmosis seepage-preventing and damp-preventing method utilizing the ground as the negative electrode and applying to underground space. According to the method, holes are drilled in a grounded wall isolated by rocks or soil at intervals, a positive electrode material is arranged in each drilled hole, a closed circuit is formed with the negative electrode area of the ground, a rectification and current stabilization converter is connected to each positive electrode material through a wire, 220 V alternating currents are output and rectified through the converter, converted into direct currents through the converter and supplied to the positive electrode materials, the grounded wall makes contact with the rectified positive electrode materials, the currents are output by a power supply, flow through the positive electrode materials, reach the grounded wall in the positive electrode material area and finally flow to the negative electrode area of the rocks or soil, water molecules in the grounded wall are led to the negative electrode area by making contact with the wall positively charged, and therefore the surface of the grounded wall can keep dry; meanwhile, free water in the rocks or soil are migrated to the negative electrode area under the effect of positive electrode and negative electrode electric fields, and therefore seepage and damp can be prevented.

The invention discloses a lightning-protection and damp-proof distribution box device which comprises a box body, wherein a fan is arranged in the middle of the right side of the box body, a heating wire is arranged at the left end of the fan, and the heating wire is fixedly connected with the right side wall in the box body; a main machine is arranged in the middle of the bottom end in the box body, a humidity sensor is arranged above the main machine, and the humidity sensor is fixedly connected with the top wall in the box body; the middle part of the top end of the box body is provided with a connecting rod, the top end of the connecting rod is provided with a rain-proof cover, a supporting block is arranged in the middle of the top end of the rain-proof cover, a groove is arranged inthe middle of the top end of the supporting block, a second spring is arranged in the middle of the bottom end in the groove, the top end of the second spring is fixedly connected with a trapezoidal convex block, and a triangular movable block matched with the trapezoidal convex block is arranged on two sides of the trapezoidal convex block. The lightning-protection and damp-proof distribution boxdevice is simple in structure, low in cost and convenient to use, can achieve the effect of lightning-protection, damp-proof and dust-proof, and a lightning rod is provided with a damping structure,cannot be broken due to storm, and is good in lightning protection effect.

The invention discloses a binder for a wood plate. The binder is prepared from 0 to 500 parts by weight of epoxy resin, 1 to 200 parts by weight of a paraffin emulsion, 1 to 300 parts by weight of white latex, 1 to 200 parts by weight of a curing agent, 50 to 100 parts by weight of ultra-fine cellulose powder and 0 to 10 parts by weight of cellulase. The binder is prepared from the above raw materials dissolved in an organic solvent and is jelly. Through synergetic bonding of epoxy resin and white latex, bonding strength is improved so that the binder does not easily fall off in long-term use. The paraffin emulsion is used and the paraffin emulsion with fine particle sizes can naturally penetrate into a wood plate so that the wood plate has water resistance after drying. The cellulose has good absorptivity, has hydrophily under cellulase action and realizes moisture prevention.

The invention discloses an anti-collision medical medicine box, which comprises a box body, rubber buffer belts are arranged symmetrically and equidistantly on both sides inside the box body, and three drug storage frames are stacked equidistantly inside the box body, and The small sleeve slot is located at the bottom of the shelf. In the present invention, in the anti-collision medical medicine box, firstly, rubber buffer belts are arranged symmetrically on both sides of the box body. During the transportation of medicines, due to the setting of rubber buffer belts, a certain impact force can be reduced to achieve The purpose of anti-collision, secondly, the inside of the box body is stacked with a drug placement frame, and a placement rack is placed in the medicine placement frame, and the racks are staggered with large medicine bottles and medicine bottles for placing medicines. Small medicine bottle, the design of this structure can protect the medicine to a certain extent. During the transportation process, it avoids the medicine bottle being broken due to collision, and it is also more convenient when taking and placing the medicine.

The invention relates to the related field of power grid monitoring, and discloses a box-type transformer device capable of automatically removing snow and preventing moisture, which comprises a mainbody box. A sliding plate cavity with an upward opening is arranged in the main body box, trigger sliding block cavities with upward openings are arranged in the main body box in bilateral symmetry bytaking the sliding plate cavity as a center, and a transformation equipment cavity is arranged at the lower side of a forward rotating pull rope. The accumulated snow condition of the upper end faceof the device is monitored in real time through the accumulated snow triggering sliding plate, meanwhile, accumulated snow is removed in cooperation with the snow removing block capable of moving in areciprocating mode, damage of snow water to the device is avoided, normal work of equipment in a voltage transformation equipment cavity is guaranteed, and meanwhile the humidity in the voltage transformation equipment cavity is monitored in real time through synthetic fibers; and the size of the ventilation opening is changed through the blocking sliding plate, evaporation of moisture in humid air in a cavity of the voltage transformation equipment is accelerated in cooperation with heat generated by the voltage transformation equipment, and finally the moisture is exhausted to the outside through the exhaust fan, so that the moisture prevention purpose is achieved.

The invention discloses an intelligent electric cooker with a constant temperature rice storage function. The intelligent electric cooker comprises a rice box, a containing box and an electric cooker; the lower side of the rice box is provided with the containing box; the containing box is a rectangular box with an upper end opening, and is divided into a first groove body and a second groove body by partitioning plates, and the electric cooker is arranged inside the first groove body; the rice box is of a cuboid structure, and a rice outlet structure is arranged on a position, corresponding to the electric cooker, of the bottom surface of the rice box and is communicated with the electric cooker; the inside of a shell of the rice box is provided with a thermal insulating layer, and the rice box also comprises a temperature sensor, a refrigerating device and a heating device; the intelligent electric cooker with the constant temperature rice storage function also comprises a control module and a touch panel, the touch panel is arranged on the outer side wall of the first groove body, and the temperature sensor, the refrigerating device, the heating device and the touch panel are respectively electrically connected with the control module. By adopting the intelligent electric cooker, integration and separation of the rice box and the electric cooker can be realized, a constant temperature is kept inside the rice box on the electric cooker, rice storage is easy, and the intelligent degree of the electric cooker is improved.

The invention discloses a waterproof-drainage, moistureproof and fireproof cable trench system for a tunnel. The waterproof-drainage, moistureproof and fireproof cable trench system comprises a waterproof cover plate module of a cable trench arranged at the top of the cable trench, a cable trench water monitoring module arranged in the cable trench, and a waterproof wall structure module of the cable trench, wherein the waterproof wall structure module of the cable trench is provided with a cable moistureproof module, wherein the waterproof cover plate module of the cable trench comprises a plurality of waterproof cover plates of the cable trench, anti-skid stop blocks of the waterproof cover plates and waterproof cover plate water-blocking strips; the plurality of waterproof cover platesof the cable trench are obliquely arranged at the top of the cable trench; the anti-skid stop blocks of the waterproof cover plates are arranged at the bottoms of the waterproof cover plates separately; and one waterproof cover plate water-blocking strip is arranged at the joint between two adjacent waterproof cover plates of the cable trench. According to the waterproof-drainage, moistureproof and fireproof cable trench system for the tunnel, underground water can be effectively prevented from affecting normal working of a cable pipe in the cable trench, the overall structure of a cable and the cable trench is effectively protected and the service period of the cable trench is prolonged.

Provided is a laser module which is connected to a circuit board. The laser module comprises a main body, a focusing lens, a housing, a laser diode, an image lens and an airtight structure. The main body comprises a front opening end, a rear opening end and an inner wall. The focusing lens is combined in the front opening end of the main body. The housing coats the external of the main body. A through hole is arranged at one end of the housing at a position that corresponds to the focusing lens, while the other end of the housing is provided with an opening which allows the main body to extend into the housing. The laser diode is combined with the inner wall of the main body by packing through the rear opening end of the main body and corresponds to the focusing lens. The laser diode is further electrically connected to the circuit board. The image lens is arranged inside the through hole and corresponds to the focusing lens. The airtight structure is used to enclose the image lens inside the housing.

A high speed ceiling nail having gunpowder comprises a body, emission gunpowder, base gunpowder and a base gunpowder seat. The body comprises a firing tip and an impact bearing part which is equipped with an accommodating chamber comprising an opening end and a base end. The inner wall of the accommodating chamber is near the opening end and comprises an inner thread. The emission gunpowder is installed in the accommodating chamber and the base gunpowder is also installed in the accommodating chamber and in contact with the outer side end of the emission gunpowder. The base gunpowder seat is fixedly arranged in the accommodating chamber and covers the bottom of the base gunpowder. According to the invention, the base gunpowder seat is fixedly arranged in the accommodating chamber and covers the outer side of the base gunpowder, so objectives of moisture prevention and avoiding of mistaken behaviors are achieved; and when the body suffers impacts to be fixed to the wall face, threaded connection with a ceiling piece can be performed through the inner thread of the accommodating chamber, so an objective of convenient and quick assembly is achieved.

The invention discloses an intelligent electric cooker system capable of automatically cooking. The system comprises an electric cooker terminal and a monitoring terminal. The electric cooker terminal comprises a rice bin, an accommodation box and an electric cooker, and the accommodation box is arranged below the rice bin. The accommodation box is the rectangular box provided with an opening at the upper end, and is divided into a first tank and a second tank through a separator plate. The electric cooker is disposed inside the first tank. The rice bin is cuboid-shaped. A rice feeding mechanism communicated with the electric cooker is arranged at the portion, corresponding to the electric cooker, of the bottom surface of the rice bin. The housing of the rice bin is internally provided with a thermal insulation layer. The rice bin also comprises a temperature sensor, a cooling device and a heating device. The electric cooker terminal also comprises a first control module and a touch control panel, and the touch control panel is arranged on the outer side wall of the first tank. According to the invention, the electric cooker can be remotely controlled to automatically cook, the temperature of the interior of the rice bin arranged above the electric cooker can keep constant, the storage for rice is facilitated, and the intelligent degree of the electric cooker is improved.

The invention discloses a tray packaging machine. The tray packaging machine comprises a rack, a feeding module mounted on the rack, an overlapping module arranged on the feeding module, a rubber bandsleeving module and a material supply module located above the feeding module, a packaging bag module corresponding to the material supply module at one end, a material receiving module located at the other end of the packaging bag module and a labeling module located above the material receiving module. According to the tray packaging machine, the whole packaging process of a tray can be finished automatically, so that the manpower cost is reduced. Meanwhile, the influence of human factors on the whole packaging process is reduced, and the production efficiency and the production yield are improved. Moreover, an overlapping structure of the tray can be adjusted to the actual demand by arranging the overlapping module, so that trays of different quantities in a certain range can be met.

The invention discloses a direct-current power supply line protection device for rail transit, and relates to the technical field of line protection, the direct-current power supply line protection device comprises a bearing mechanism, a driving part, a protection assembly, a first transmission part, a second transmission part and an adjusting part, a telescopic part, an opening and closing part and a clamping part are arranged in the protection assembly, and the telescopic part is connected with one side of the opening and closing part; a moisture-proof agent is contained in the opening and closing part, the first transmission part is connected with the protection assembly, the second transmission part comprises a first rotating piece and a second rotating piece, a transmission belt is connected between the first rotating piece and the second rotating piece, an adjusting rod is arranged in the adjusting part, and a first limiting rib and a second limiting rib are connected to the adjusting rod; the first transmission part and the first rotating part are both movably arranged on the adjusting rod in a sleeving mode, the adjusting rod is further connected with the driving part in an engaged mode, the circuit can make the moisture removal agent in the opening and closing part make contact with the circuit in the mode that the clamping part is pressed against the circuit, and therefore the moisture-proof purpose is achieved, and the beneficial effects of being good in protection effect and convenient to use are achieved.

The invention relates to a moisture protection method of traditional Chinese medicine extract. The method comprises the following steps: firstly, dissolving or suspending traditional Chinese medicine extract in a dispersing agent so as to obtain traditional Chinese medicine extract solution or suspension with the concentration being 5 to 300mg / ml, secondly, weighing moisture-proof auxiliary material, the weight of which is 3 to 20 percent of that of the traditional Chinese medicine extract, dissolving the moisture-proof auxiliary material in the dispersing agent, so as to obtain moisture-proof auxiliary material solution, and thirdly, uniformly mixing the traditional Chinese medicine extract solution or suspension in the first step with the moisture-proof auxiliary material solution in the second step, drying and removing the dispersing agent in the second step, so as to obtain traditional Chinese medicine extract bulk drug, wherein the dispersing agent in the first and second steps adopts water or solution of ethanol and water mixed according to arbitrary proportion; and the moisture-proof auxiliary material adopts leucine. The method has the advantages that the use level of leucine is low, the moisture protection effect is obvious, the productivity of prepared particles can be improved, simultaneously the flowability and the dispersibility of the prepared particles are improved, and the method is simple and the quality of preparation is improved.

The invention provides a dual-layer sealing bag for storing hot melt coating. The dual-layer sealing bag comprises an external bag and an internal bag in the external bag, the external bag is internally provided with an external bag body, a damp-proof decoration layer is closely glued to the outer layer of the external bag body through a first glue layer, an aluminum foil layer is glued to the inner layer of the external bag body through a second glue layer, and a sponge layer is arranged on the inner surface of the aluminum foil layer. According to the dual-layer sealing bag for storing the hot melt coating, the external bag is provided with the papery damp-proof decoration layer, so that the damp-proof aim can be achieved when the whole external bag is reversely placed; the inner layer is provided with the aluminum foil layer with the sponge layer, the heat-insulation effect can be achieved, and the influence of the external environment on the quality of the hot melt coating is reduced. A sealing strip is arranged on the internal bag, a high sealing effect can be achieved, storage of the hot melt coating is facilitated, and the rain-proof and damp-proof aims can be achieved. A bending section is arranged on the internal bag, the drop-resistant effect can be achieved, and the situation is avoided that under violent impact, the sealing strip in the internal bag is pulled out, and the sealing effect is affected.

The invention relates to the field of building construction, and discloses a steel structure warehouse. The steel structure warehouse comprises a skeleton, a warehouse bottom, a warehouse wall and a warehouse roof. First chambers and second chambers are formed in side plates, communicating pipes are arranged between the first chambers and the second chambers, rotating shafts are installed in the communicating pipes, and rotating blades and fan teeth are installed on the rotating shafts coaxially. A plurality of air inlets are formed in the side plates, communicating chambers and a plurality ofair pressure chambers are arranged in the second chambers, through holes are formed between the adjacent air pressure chambers, and gas overflow valves are installed in the through holes. Heat conducting fins are slidably connected into each air pressure chamber, pitching piles are fixed to the bottoms of the heat conducting fins. Each air pressure chamber is internally provided with a heat producing device which can produce heat when the heat conducting fins slide. Guide rails are arranged at the bottoms of the communicating chambers, connecting opening plates are slidably connected to the guide rails, and the connecting opening plates comprise butting parts and tooth parts. According to the technical scheme, the stability of the warehouse in high winds can be enhanced, the warehouse isprevented from being blown over by the high winds, and the problem that goods in the warehouse are affected with damp can be avoided, so that the storage life of the goods is prolonged.

The invention discloses an unmanned aerial vehicle camera with flame-retardant and moisture-proof performance, and belongs to the field of unmanned aerial vehicle cameras, and the unmanned aerial vehicle camera with flame-retardant and moisture-proof performance comprises a top base, and the bottom side of the top base is fixedly connected with the unmanned aerial vehicle camera. A fireproof and moisture-proof cover is fixedly connected to the position, located outside the unmanned aerial vehicle camera, of the bottom side of the top base, a cavity is formed in the fireproof and moisture-proof cover, an annular hollow pipe is fixedly connected to the position, located outside the fireproof and moisture-proof cover, of the bottom side of the top base, and a ventilation pipe is fixedly connected to the position, close to the top, of the outer wall of the fireproof and moisture-proof cover; the ventilation pipe extends into the fireproof and moisture-proof cover and is not communicated with the inside of the cavity. The unmanned aerial vehicle camera can be realized and has good fire-proof and moisture-proof performance, and the situation that the unmanned aerial vehicle camera is burnt out in a fire environment or the shooting definition of the camera is low or the camera is damaged due to moisture is effectively reduced.

The invention discloses a moisture-proof optical cable connector. The moisture-proof optical cable connector comprises a housing and an accommodation chamber which is arranged in the housing and accommodates an optical cable, wherein the housing is composed of a housing body, a ventilating housing which is in contact with the accommodation chamber and is connected with the housing body, and a moisture-proof ventilating assembly which is arranged at the inner wall of the ventilating housing. The optical cable connector provided by the invention prevents moisture and can also dissipate heat, realizes exchange with external air flow to realize a heat dissipation function through the ventilating housing, realizes the purpose of moisture prevention through absorbing the moisture through the moisture-proof ventilating assembly, avoids safety accidents and prolongs the service life.

The invention discloses an ecological anticorrosive wood floor. The ecological anticorrosive wood floor comprises a surface decoration wood veneer layer, a first damp-proof layer, a first anticorrosive layer, a wood board layer, a second anticorrosive layer and a second damp-proof layer, wherein the cross sections of the first damp-proof layer and second damp-proof layer are both in a shape like aChinese character 'men', the surface decoration wood veneer layer adheres to the upper surface of the first damp-proof layer, a negative ion power layer is arranged between the surface decoration wood veneer layer and the first damp-proof layer, the first anticorrosive layer adheres to the lower surface of the first damp-proof layer, the wood board layer adheres to the lower surface of the firstanticorrosive layer, the second anticorrosive layer adheres to the lower surface of the wood board layer, the second damp-proof layer adheres to the lower surface of the second anticorrosive layer, and the two sides of the first damp-proof layer and second damp-proof layer adhere together. The ecological anticorrosive wood floor has the advantages of not breeding bacteria and being damaged by worms easily, being capable of releasing negative oxygen ions, absorbing formaldehyde, and having the function of purifying air.

The invention relates to the technical field of medical equipment and discloses a medical automatic pill counting instrument comprising a machine body. A control console is fixedly connected with thefront face of the machine body. The front face of the machine body is fixedly connected with a displayer located on the right side of the control console. The left end of the top of the machine body is fixedly connected with a feeding machine. The front face of the feeding machine is provided with round through holes. A funnel is fixedly connected with the top of the feeding machine. The right side of the feeding machine is fixedly connected with a first sliding rod. The top of the first sliding rod is provided with a first sliding groove. According to the medical automatic pill counting instrument, the round through holes, a flow guide pipe, a first motor, a tray and grooves are arranged, the inner portion of the feeding machine is in the sealed state, so that the purpose of damp resistance is achieved due to the arrangement of the round through holes; after the pill subpackage requirement of one bottle is met, the first motor normally works, the position of the bottle is moved, so that the pill subpackage effect is achieved, and then the automatic subpackage effect is achieved.

The invention discloses a metal product for preventing woodware from dampness. The metal product comprises the woodware. A metal protection layer is arranged on the outer surface of the woodware and comprises a metal basic layer. A damproof layer is arranged on the outer side of the metal basic layer, and a decoration layer is arranged on the outer side of the damproof layer. According to the metal product for preventing the woodware from dampness, due to the fact that the metal protection layer is arranged on the outer surface of the woodware, the woodware can be prevented from cracking, the discharging speed of moisture in air to a heat preservation layer can be reduced through an air insulation layer of the damproof layer in the metal protection layer, forming of moisture condensation is effectively stopped, the moisture in the heat preservation layer is discharged fast and effectively through a waterproof and breathable film, the structural performance of the woodware is protected, and the aim of preventing the woodware from dampness is achieved. In addition, the decoration layer is arranged on the outer side of the damproof layer, and curved grain is carved on the outer surface of the decoration layer and achieves a very good attractiveness function.

The invention discloses a novel water level sensor which comprises a shell, an air cover and an adjusting screw bearing plate, a coil unit is arranged inside a cavity formed by the shell and the air cover, the coil unit comprises at least two terminals, the terminals stretch out from a socket of the shell, the terminals are all fixed to the same side of the shell, and a baffle located between theadjacent terminals is arranged on the outer wall of the shell so that the adjacent terminals can be separated. The invention further discloses a washing machine which is provided with any water levelsensor, the water level sensor is communicated with an air chamber of the washing machine, and the baffle located between the adjacent terminals is arranged on the shell, so that mutual insulation between the adjacent terminals is ensured, and short-circuits of the terminals caused by dew formation of the shell are avoided.

The invention provides an experimental instrument storage cabinet for chemical experiments and the experimental instrument storage cabinet comprises an experimental cabinet main body and a dust-proofcover. The top of the experimental cabinet main body is fixedly connected to the bottom of the dust-proof cover. The left wall of the inner cavity of the experimental cabinet main body is fixedly connected to a horizontal plate, and the right end of the horizontal plate is fixedly connected to the right wall of the inner cavity of the experimental cabinet main body. The top of the horizontal plateis embedded with a first motor, and the output end of the first motor movably penetrates through the horizontal plate and extends to the position below the horizontal plate. According to the experimental instrument storage cabinet for chemical experiments, the first motor is started, and then a rotation disk is driven to rotate through the rotation of output end of the first motor. The rotation disk drives a rotation rod to perform circular motion, the rotation rod drives a sliding block to perform circular motion on a circular sliding rod, and the sliding block drives a driving rod to rotate, so that moisture remained at the bottom wall of the inner cavity of the experimental cabinet main body can be absorbed by sponge so as to achieve the aim of moisture-proof and prevent the instruments in the experimental cabinet main body from being qualitatively changed by moisture, therefore, the safety performance of the experimental cabinet main body is higher.

The invention discloses a moisture-proofing device for chemical fiber fabric processing. The device comprises a sleeve housing, wherein an opening is formed in the middle part of the sleeve housing; arotatable belt wheel and a heating barrel are mounted in the opening of the sleeve housing; a protecting housing is mounted on the top part of the sleeve housing; a horizontal supporting plate is fixed to the sidewall of the sleeve housing; a motor is fixed to the supporting plate through a bolt; the output end of the motor is connected to a motor shaft, and the motor shaft penetrates the sleevehousing and is connected to one end of the belt wheel; a conveyor belt sleeves the outer part of the belt wheel; and heating sheets are fixed in the protecting housing. According to the device, the sleeve housing of which the middle part is provided with the opening is provided and is capable of improving the moisture-proofing sensitivity during fabric processing and transporting; the chemical fiber fabric can be dried and prevented from moisture in case of a moist air environment at some route in processing; when the fabric moves, a moisture removing plate and a heating rod continuously produce heat, and thus the water on the fabric can be quickly absorbed due to being in contact with the moisture removing plate and the heating rod during continuous moving.

The invention discloses an optical cable connector, comprising a housing, a containing chamber which is arranged inside the housing and contains the optical cable, a breathable partition plate arranged between the containing chamber and the housing, and a hygristor filled between the breathable baffle and the housing. The invention provides a containing chamber, in which the hygristor and the containing chamber are isolated by the breathable baffle, and the moistureproof effect is achieved through the hygristor absorbing the moisture. The optical cable connector can prevent the safety accident and prolongs the service life.

The invention discloses a new type of water level sensor, which comprises a housing, an air cover, and an adjusting screw receiving plate. A coil unit is installed in a chamber surrounded by the housing and the air cover. The coil unit includes at least two terminals, and the terminals are separated from the housing The sockets of the two terminals protrude and are fixed on the same side of the housing. The outer wall of the housing is provided with a baffle in the middle of the adjacent terminals to separate the adjacent terminals. The present invention also discloses a washing machine, on which the water level sensor described above is installed, and the water level sensor communicates with the air chamber of the washing machine. By arranging a baffle plate located in the middle of adjacent terminals on the housing, mutual insulation between adjacent terminals is ensured, and short circuit of the terminals caused by dew condensation on the housing is avoided.

The invention discloses a heat preservation device for building water supply and drainage and heating and ventilation engineering, which comprises a pipeline, a heat preservation layer and a heat preservation layer, and the bundle plate is connected to the surface of the heat preservation layer and is made of a flexible metal material, one end of the bundle plate is fixedly connected with a bearing plate, and the surface of the bearing plate is sleeved with a fixing plate made of a flexible metal material. According to the heat preservation device for the building water supply and drainage and heating and ventilation engineering, an operator fixes two fixing plates on the surface of a heat preservation layer through fixing threaded rods, then a forward and reverse motor is started, and two shaft sleeves are driven to move on the surfaces of two-way threaded rods; then the linkage rod forms a linkage structure on one side of the bearing plate through a two-way threaded rod in the shaft sleeve, the bearing plate forms a sliding connection structure at the opening of the fixing plate through a limiting block, and the tightness of the bearing plate at the opening end of the fixing plate is adjusted, so that the bundle plate is tightly connected with the heat preservation layer; therefore, the purpose of automatically adjusting the tightness degree is achieved.