135results about How to "Not easy to leak" patented technology

The invention relates to a lead-free aluminum solder wire and a preparation method thereof. The lead-free aluminum solder wire comprises, by weight, 1.2-3.0% of metal components and 97-98.8% of soldering flux; the metal components comprise, by weight, 98-99.7% of tin and 0.3-2% of copper; and the soldering flux comprises, by weight, 60-85% of fluorination hydroxylamine, 5-30% of metal active salt, 1-5% of an active agent and 0.1-5% of a corrosion inhibitor. The lead-free aluminum solder wire is good in solderability, high in soldering efficiency which can be improved by over 10%, small in welding spattering and capable of lessening subsequent corrosion, reducing washing difficulties and saving precious tin solder, the soldering flux is not prone to leak and seep during storage, and problems that welding spattering is large, solderability is not high and soldering flux clamped in solder wires leak out to pollute the whole rolled products and even lead to product scrapping under serious conditions are solved.

The invention discloses an identity authentication method based on gesture characteristics, and the method is applied to a touch screen device. The method includes the steps that a current input gesture, on a touch screen, of a user is roughly compared with a plurality of gestures input in advance, and therefore rough similarity can be obtained; if the rough similarity requirement is reached, the acceleration, the angle and the distance of the current input gesture at each time slice are calculated, whether the acceleration, the angle and the distance of the current input gesture at each time slice are within the upper limit range and the lower limit range of the acceleration, the angle and the distance of the gestures input in advance at the corresponding time slice respectively or not are judged one by one, and the final similarity is calculated according to the judgment result; if the final similarity reaches a second preset threshold value, it is judged that identity authentication succeeds. The invention further discloses an identity authentication system based on the gesture characteristics. Through the method and system, according to the difference of the stability of the gestures input by the user, different password security grades are given.

The invention relates to a chlorosulfonated polyethylene lead-free recipe for a power steering pipe. The recipe contains the following components: 100 parts of chlorosulfonated polyethylene rubber (CSM), 30-50 parts of fast extruding furnace black (N550), 15-35 parts of softener T810T, 5-20 parts of dioctyl sebacate (DOS), 10-20 parts of light calcium carbonate, 0.5-2 parts of flow promotor WS1 80, 0.5-2 parts of flow promotor WA 48, 0.5-2 parts of antiager NDBC, 0.5-3 parts of N'N-m-phenylene dimaleimide (HVA-2), 0.5-2 parts of dipentamethylenethiuram tetrasulfide (DPTT) and 0.5-1 part of dibenzothiazyl disulfide DM. The recipe has the characteristics of high strength, high hardness, low compression residual deformation, oil resistance and the like, thereby completely meeting the demands of the power steering pipes; meanwhile, the recipe has no toxin or odor and is stable in storage.

The invention discloses an organic-inorganic three-layer composite film and a preparation method thereof, and belongs to the field of the preparation of film materials. The composite film comprises asupporting layer, a middle transition layer and a surface active layer, wherein the supporting layer adopts an inorganic film, with the surface average pore size being 10 to 800 nm; the middle transition layer adopts organic polymer, with the mass fraction being 1 to 10 percent, and the surface average pore size being 5 to 80 nm; the surface active layer adopts silicone rubber PDMS, with the filmlayer thickness being 1 to 10 micrometers. The organic-inorganic three-layer composite film takes an organic polymer film with controllable thickness and surface pore size as a middle transition layer, can optimally regulate the uniformity and thickness of the surface active layer of the composite film and the bonding strength between the dense surface active layer and the middle transition layerand between the inorganic film supporting layer and middle transition layer by controlling the viscosity of PDMS coating fluid. The composite film is large in permeation flux and high in separation factor, and the surface active layer is not easy to peel off, so that the composite film is applicable to organic solvent recovery and organic gas separation in pervaporation.

The present invention is one double turntable type shot-blasting reinforcing and cleaning machine as metal part surface reinforcing and cleaning apparatus. It consists of one shot blasting chamber, one shot blasting unit, one elevating mechanism, one separator, two rotary worktables, one dust collecting mechanism and one electric control system. It features the shot blasting chamber with one door, two hinged integral door leave and one cantilever; and the rotary worktables supported through bearing seat onto the cantilever and driven with a frictional driving mechanism. The present invention has the advantages of high efficiency, convenient operation, less pollution to the environment and smooth operation of the rotary worktables.

The invention discloses a hydraulic fertilizer device, consisting of a pulse generator, a hydraulic fertilizer tank and a pressure transmission assembly. The hydraulic fertilizer device utilizes water hammer principle to generate pressure which drives a hydraulic piston to move in the hydraulic fertilizer tank, the hydraulic piston compresses fertilizer liquid to enter an irritation pipeline, thus realizing the injection of the fertilizer liquid. In the invention, due to the application of the water hammer principle, hydraulic pressure is generated to inject fertilizer, pressure for injecting fertilizer which is higher than the water pressure of the irritation pipeline is generated under the condition that no outside power is added, thus the reliability of fertilizer liquid injection is improved, and water head loss of the irritation pipeline does not occur due to the fertilizer application. The hydraulic fertilizer utilizes hydraulic principle to directly drive the fertilizer liquid in the fertilizer tank for fertilizing, is in parallel usage on the irritation pipeline, has the characteristics of simple structure, easy processing and manufacturing, low cost, uniform fertilizer application, uneasy leakage, controllable fertilizing concentration, convenient installation and usage and the like, and is suitable for the irritation fertilizing requirements of micro-irrigation, sprinkler irrigation, low pressure pipelines and the like.

The invention discloses a power lithium battery cooling plate. The power battery cooling plate comprises a forming plate and a flat plate, the forming plate is internally provided with a plurality ofrunners, the power battery cooling plate is characterized in that each runner comprises a freezing medium entrance section, a plurality of flows and a freezing medium exit section which are sequentially connected in series, a heat exchange area is formed in the flow, and the heat exchange areas of the various runners are arranged in parallel. A freezing medium of an automobile refrigerating systemis used as a refrigerant to cool a lithium battery. The freezing medium enters the cooling plate from the entrance section of the runner, exchanges heat with the battery in the runner, and flows outfrom the exit section after absorbing the heat. As the multiple runners are adopted, the flow distribution of the freezing medium on the cooling plate is reasonable, and the effect of evenly cooling the battery is produced. Each runner is provided with a plurality of flows, the cold and hot flows are distributed in a staggered manner, so that the heat exchange is more sufficient, and the heat exchange efficiency is improved.

The invention relates to a gas flow test device based on piston working principle. The existing device is suitable for large flow test, but is inconvenient to use and inaccurate in measuring result when measuring small flow. The invention comprises a frame, a cylinder, a motor and a measurement and control system, wherein the cylinder, the motor and the measurement and control system are arranged on the frame and the motor drives the piston in the cylinder. The invention is characterized in that the piston is of bell shape, a column-shaped piston is formed at the middle of the bell-shaped piston, the cylinder comprises an inner gas chamber and an outer gas chamber, the column-shaped piston is inserted into the inner gas chamber, the inner gas chamber and the outer gas chamber are connected via a gas outlet pipe arranged outside the cylinder, the gas outlet pipe is connected with a detected flowmeter, the inner gas chamber and the outer gas chamber are respectively connected with an external gas duct, and the gas duct and the gas outlet pipe are respectively provided with a flow controller. The invention is designed to optimize chamber structure in the cylinder to match with the dual pistons, and measurement is realized by selecting the corresponding piston according to different measurement need, thus improving measurement accuracy and expanding application range.

The invention discloses a water power extrusion fertilizer applicator, comprising a water wheel drive assembly, an extrusion fertilizing assembly and a connecting transmission shaft. The water wheel drive assembly consists of an impeller and a housing, and the impeller is arranged at the front end of the transmission shaft. The extrusion fertilizing assembly consists of a housing, an elastic hose, a rotor and an extrusion wheel, and the extrusion wheel is arranged on the rotor which is arranged at the back end of the transmission shaft. The pressure water flow in a pipeline drives a water wheel to rotate, which drives the rotor to rotate through the transmission shaft, the extrusion wheel on the rotor alternately extrudes and releases the elastic hose, so that alternating pressure and vacuum occur in the hose to realize the extrusion and suction of the fertilizer liquid, thus accomplishing the process of fertilizer injection and fertilizer suction. The invention needs no added outside power, is convenient in installation and usage, and can be used in parallel on an irritation pipeline; the structure is simple, the manufacturing and using cost is low, the resistance to corrosion of the fertilizer liquid is strong, and the fertilizer liquid is unlikely to leak. The invention is suitable for the irritation fertilizing requirements of micro-irrigation, sprinkler irrigation, low pressure pipelines and the like.

The invention discloses a tangential introducing spiral-flow type gas-liquid mixing efficient atomization nozzle which comprises a feeding chamber, a spiral flow chamber and a spray head. The feeding chamber is composed of two layers of coaxial cylinders. A cavity formed by the inner cylinder is a gas channel, and a cavity formed by the outer cylinder is a liquid channel. The feeding chamber and the spiral flow chamber are connected through a flange body. The spiral flow chamber is composed of a spiral flow cavity and four flow guide bodies. The spiral flow chamber is connected with the spray head, the interior of the spray head is divided into a contraction section, a throat and an expansion section, the contraction section communicates with the spiral flow cavity, a gradually contraction hole outlet of a conical gas spray device is right opposite to an annular groove in the inner wall of the contraction section of the spray head, and the atomization effect can be improved. The middle of the contraction section is provided with a vibration leaf spring. The two ends of the throat are in smooth connection with the contraction section and the expansion section correspondingly. Liquid is introduced into the spiral flow chamber to be accelerated and then mixed with accelerated gas in the conical gas spray device for atomization, atomized liquid droplet particles are cut and scattered through the vibration leaf spring, atomization is intensified, liquid is sprayed out from the expansion section of the nozzle, and the contact area is increased.

The invention provides an oil pan for motors, which comprises a large end face of the oil pan, an internal cavity of the oil pan, a back end face and a bottom of the oil pan, and is characterized in that the internal cavity of the oil pan is provided with internal cavity reinforcement that can reinforce and reduce noises; the bottom of the oil pan is provided with bottom reinforcement; the back end face of the oil pan is provided with back end reinforcement; the back end face of the oil pan is designed into a semi-circle shape, which is similar to the end face shape of the gear-box, and two bolt holes that connect the oil pan and the gear-box are added on the back end face of the oil pan, so the oil pan can be connected with the gear-box directly. The oil pan is set higher than the high-pressure oil channel to favor the arrangement of the whole machine. As the twisted reinforcement that can reinforce and reduce noises are arranged in the internal cavity and the bottom of the oil pan, the noise of oil pan is reduced. As two bolt holes that connect the oil pan and the gear-box are added on the back end face of the oil pan, the oil pan can be connected with the gear-box directly, thereby reducing the guard plates for the motor and the gear-box, reducing the procedure for assembly and reducing the cost. As the high-pressure oil channel is arranged in the internal cavity of the oil pan, the oil channel can convey the high-pressure oil from the oil pump to the motor frame, which is favorable to the arrangement of the whole machine.

The invention provides a phase change energy storage fiber with isolation cavities. The matrix of the fiber is compact boric acid crosslinked polyvinyl alcohol. The matrix is provided with a plurality of isolation cavities which are isolated from each other, the cavities are distributed along the length of the fiber, and each cavity contains an oil soluble phase change material. The preparation method comprises the following steps: (1) preparing middle phase fluid, external phase fluid and receiving liquid; (2) by taking the oil phase change material as an internal phase fluid, respectively injecting the internal phase fluid, the middle phase fluid and the external phase fluid into an injection pipe, a transition pipe and a collecting pipe, enabling the internal phase fluid to enter the transition pipe by virtue of the injection pipe, shearing the internal phase fluid in the transition pipe into mono-dispersed drops by the middle phase fluid, enabling the middle phase fluid which carries the mono-dispersed drops to enter the collecting pipe through the transition pipe, and in the collecting pipe, carrying out crosslink curing on the components in the middle phase fluid and dehydrating to form fibers which are collected by using a receiving container for holding the receiving liquid; and (3) after the fibers in the receiving liquid are fully cured, taking out the fibers, and washing and drying to the fibers.

The invention provides a ventilated shoe pad. The heel of the ventilated shoe pad has a certain thickness, and the ventilated shoe pad mainly comprises an integral shoe pad body and a built-in airbag assembly. The built-in airbag assembly comprises an airbag body and an air inlet tube which is arranged at the front end of the airbag body to be communicated with an air cavity of the airbag body; a one-way air intake valve is arranged inside the air inlet tube; the airbag body of the built-in airbag assembly is completely wrapped by the integral shoe pad body at the heel with the certain thickness in each direction; an air inlet end opening of the air inlet tube of the built-in airbag assembly is formed at the arch of the ventilated shoe pad or on the bottom surface of forefoot; except the air inlet end opening, the air inlet tube is completely wrapped by the integral shoe pad body; and only the front end of the airbag body of the built-in airbag assembly is provided with the air inlet tube in a protruding mode, while the rear end and left and rights ends of the airbag body of the built-in airbag assembly are not provided with a protruding adapter tube. The ventilated shoe pad has the characteristics of simple structure and firmness.

The invention discloses a rotary multi-sample point sampling valve. The sampling valve comprises a hand wheel, a rotary valve body and an elbow-shaped sampling tube, wherein the hand wheel is connected with one end of the rotary valve body; the other end of the rotary valve body is connected with the elbow-shaped sampling tube; and the hand wheel is turned to drive the rotary valve body and the elbow-shaped sampling tube to rotate. The sampling valve has the advantages of simple structure, complete function, convenient operation and difficult leakage. The sampling valve has broad application at each stage of brewing and post-processing of wine and can be used for storage tanks of other wines or beverages.

The invention discloses a liquid-cooled cooling plate with a composite casting structure, which comprises a cast aluminum alloy bottom plate (1), a coiler (2), a pipe joint A (4), a pipe joint B (5) and a pipeline (3). The coiler (2) is an 'M'-shaped seamless stainless steel pipe, the pipe joint A (4) and the pipe joint B (5) are stainless steel pipes, and the pipeline (3) is a straight stainless steel pipe with two end closed. The coiler (2), the pipe joint A (4), the pipe joint B (5) and the pipeline (3) are disposed in the cast aluminum alloy bottom plate (1) and are fixed with the same. During working of the liquid-cooled cooling plate, the cast aluminum alloy bottom plate (1) requires various electronic elements for heat radiation, coolant is injected from the pipe joint A (4), and then flows through the coiler (2) to be discharged from the pipe joint B (5) to a secondary cooling system for dissipating heat of the electronic elements. The heat radiation efficiency of the cooling plate is improved and corrosion of the coolant to cooling pipelines of the coiler of the cooling plate is avoided.

The invention discloses a method for paving HDPE (high-density polyethylene) geomembranes in a refuse landfill. The method comprises the following steps: (1) clipping and lapping: clipping the HDPE geomembranes, and lapping the geomembranes in and around a reservoir area; (2) sweat soldering: inflating compressed air between an upper piece and a lower piece which are lapped, so as to form a compressed air channel, forming welded joints at the left and right sides of the compressed air channel, thermally melting the two geomembranes, butting the geomembranes quickly after the temperature is reached, and welding the welded joints; and (3) inspection and repair: inspecting the HDPE geomembranes which are thermally welded, inspecting the damaged parts of the paved HDPE geomembranes, clipping the sections if the damaged parts are more than the width of each HDPE geomembranes by more than 10%, and repaving. By adopting a method of inflating the compressed air in the geomembranes, cracked welded joints are not generated when the surplus materials are chipped and torn down after the paving is finished, so that the repair cost can be reduced.

The invention relates to a direct methanol fuel battery system of a concentration-exempted detector, which comprises a plurality of fuel batteries, a circulating fuel groove with an air exhausting device, at least one control component, a circulating pump, an air circulating fan, a fuel feeder, and an alarm device which is connected to the control component, wherein, the control component comprises at least over one control circuit board, an IC chip or an electronic component. When the IC chip on the control circuit board detects that the voltage is lower than some lower limit value, the alarm device can be activated for warning users or operators to feed fuel to the circulating fuel groove by the fuel feeder. The direct methanol fuel battery system of the concentration-exempted detector provided by the invention is matched with a fuel injection port which is designed specifically according to the phenomena that methanol liquid is hard to carry and prevent leakage. The invention does not need a concentration detector, but needs a methanol water solution circulating groove, and has the advantages of system volume conservation and cost conservation.

The invention provides a composite antimicrobial of a nanometer silver bromide polymer and a preparation method thereof and belongs to a functional polymer material technology field. First, a quaternary ammonium salt type macromolecule polymer is prepared by free radical polymerization. Organic/inorganic composite materials required by preparation of silver bromide nanoparticles are intermingled with the macromolecule polymer of quaternary ammonium salt by in situ precipitation. The composite antimicrobial in the invention has the advantages of a quaternary ammonium salt type organic antimicrobial and an Ag-type inorganic antimicrobial combined: low toxicity, wide antimicrobial spectrum and strong antimicrobial activity. Furthermore, the prepared silver bromide nanoparticles are not easy to to agglomerate and leak and antimicrobial time is long because of a stabilization effect of the macromolecule copolymers and complex anions. The method reduces the amount of Ag and overcomes the defects that a single Ag-type antimicrobial is easy to change colors by intermingling a little Ag with organic polymer materials besides. The composite antimicrobial can be added in an undertint base to prepare antimicrobial functional materials.

The invention discloses a multi-station detecting and packaging device at least comprising a multi-station rotary plate device, a material taking and placing mechanical hand, an upper detection device, a horizontal detection device, a lower detection device, a material bin device and a waste material collection box. The material taking and placing mechanical hand, the upper detection device, the horizontal detection device and the lower detection device correspondingly cooperate with the multi-station rotary plate device. The material bin device and the waste material collection box correspondingly cooperate with the material taking and placing mechanical hand. Multiple positioning jigs used for containing products are arranged on the multi-station rotary plate device. The material takingand placing mechanical hand can place to-be-detected products on the positioning jigs and place the detected products in material plates or the waste material collection box. By means of the multi-station detecting and packaging device, the products are automatically detected and packaged in a precise and comprehensive manner, the material plates do not need to be manually replaced or stacked, operation is easy and convenient, precision is high, the speed is high, time and labor are effectively saved, and therefore the production efficiency and the overall quality and yield of the products areimproved, the production cost is reduced, and competiveness of the products is enhanced.

The invention discloses a method for repairing cracks of an outer wall, which comprises the following steps of: (1) concreting a wall body: scraping two sides of a crack of the wall body into grooves, cleaning up, injecting water-proof sealant, brushing advanced outer wall putty twice, and then brushing paint; and (2) bricking the wall body: filling brickwork joint crack with water-proof adhesive mixing with cement, and then spraying with colorless advanced waterproofing agent after 8 hours. Through concreting and bricking the wall body, the crack of the wall body can be firmly maintained, no water is stored or accumulated in the wall body, and the leakage is not easy to occur.

A third-party service platform login method is provided for a public platform containing information of a plurality of third-party service platforms. The method includes accepting a user logging onto the public platform from a client terminal, obtaining a third-party service platform selected by the user on the public platform, and obtaining a user identification number (UIN) of the user and a UIN of the selected third-party service platform. The user's UIN corresponds to a user account of the user on the public platform and the selected third-party service platform's UIN corresponds to a public account of the third-party service platform on the public platform. Further, the method includes combining the UIN of the user and the UIN of the selected third- party service platform to generate a new combined user account for the user to log onto the selected third-party service platform, and logging onto the selected third-party service platform.

This invention relates to a differential force type magnetic suspension water level gauge, which comprises a containment drum connected to the boiler by two pipes, a measurement hammer stable suspended in the drum by the interaction of n=magnetic fields formed by following alnicos, an inner alnico fixed on hammer upper end by an inner alnico sheath, a bracket with lower end fixed on the drum, a tension transmitter fixed on bracket upper end, an outer alnico connected to the transmitter measurement end by an outer alnico sheath, and a water-level display secondary meter connected to the signal output end of the transmitter. This invention can measure continually with high precision.

The embodiment of the invention provides a pipeline butt joint system, a cleaning robot and a workstation. The pipeline butt joint system comprises: a first joint base, wherein the first joint base isprovided with a first limiting sealing assembly and at least one first joint; and a second joint seat provided with a second limiting sealing assembly and at least one second joint. Under the condition that the second joint base is close to the first joint base, the first joint is communicated with the second joint based on the matching of the first limiting sealing assembly and the second limiting sealing assembly. According to the technical scheme, automatic butt joint and communication of pipelines can be achieved, the sealing performance is good, and leakage is not likely to happen.

The invention discloses an orthotopic implantation module of a mouse colorectal cancer built by a mesocaecum triangle and a method of the orthotopic implantation module. The method comprises the step of injecting a colon cancer cell suspension into the mesocaecum triangle of an anesthetic mouse to enable cancer cells to distribute and grow axially along a caecum to which a mesenterium of the somatic part of the caecum is adhered. Since a tumour inoculating part of an orthotopic bearing cancer module of the colorectal cancer is located on the mesocaecum triangle, the inoculating part has mesocaecum arteries partially, the blood supply is abundant, and s tumor is easy to grow; the intestinal wall of the part does not have serosae, therefore colorectal cancer cells are easy to grow, and the tumor cells inoculated are in direct contact with the caecum wall, therefore the tumour is formed on the caecum in situ; the enteric cavity of the caecum is wide, and bubbles formed after the injection are distributed along a mesocaecum adhering place, and the finally formed tumors are distributed along the caecum axially, therefore the death of the mouse cannot be caused easily due to enterocoel obstruction in short term; a bearing cancer module is built by injecting the cancer cell suspension, therefore the injection dose of the cancer cell is easily controlled, and the uniformity of the tumor is good.

The invention relates to the field of architectural materials, aiming to provide a cement group infiltration crystalline waterproof precast member and a process for preparation. The precast member comprises infiltration crystalline material, foaming agent, cement, sand and water, the weight proportioning of each component is that infiltration crystalline material takes 2-90 portions, the foaming agent takes 0-15 portions, cement takes 0-40 portions, sand takes 0-60 portions and water takes 10-40 portions. The precast member is formed by model and produced into various shaped stereo geometry products of waterproof sheet, waterproof ring, waterproof sleeve, waterproof pipe pile and triangle water stop band and the like. The scope of application is wide, construction is convenient and cost is low, which can be used for permanent protection.

The invention relates to a centrifugal type fan for a garbage processor, in particular to the technical field of the centrifugal type fan for a domestic garbage processor. The centrifugal type fan comprises a mounting plate and a blower arranged in one side of the mounting plate; the inside of a hollow chamber enclosed by the mounting plate and the blower is provided with a wind wheel; the other side of the mounting plate is provided with a motor; an output shaft of the motor passes through the mounting plate and is in rotary connection with the wind wheel; the mounting plate comprises a plate body and a mounting part which have an integrated structure and a bended angle for transition; the bended angle forms a positive corner part and a negative corner part; a plurality of depressions are formed on the positive corner part of the bended angle through stamping; and correspondingly, a plurality of protrusions are formed on the negative corner part of the bended angle. The centrifugal type fan can ensure the reliable mounting of the fan, brings small vibration and noise in operation and solves the problems that the fan of the prior garbage processor has poor mounting reliability, large vibration and noise in the operating process and the like.

The invention discloses a dual temperature tunnel type waste rubber cracking furnace. The furnace is a fixed cuboid tunnel furnace, the bottom of the furnace is provided with a flat-barrel hot air passage covering the bottom of a furnace body, two sides at one end of the outside of the furnace body are provided with a combustion furnace communicated with the flat-barrel hot air passage respectively, and the other end of the flat-barrel hot air passage is provided with two hot air outlets which are communicated with coil-shaped hot air passages on the inner walls on two sides of the tunnel furnace respectively; and the bottom surface of the furnace body is provided with a skip track, a skip loaded with waste rubber raw materials can move on the skip track, and two ends of the tunnel furnace are provided with a furnace door respectively. The dual temperature tunnel type waste rubber cracking furnace has the advantages of simple structure, easy manufacture, convenient operation, short production period, high production efficiency, good safety performance and mechanized operation; because the raw materials in the furnace are static, the pyrolyzed oil has good quality and contains little impurity; the main furnace is a fixed device and avoids leaking smoke from two ends compared with a rotary cracking furnace, so the furnace is more environment-friendly; and simultaneously, the furnace can be provided with detection and monitoring instruments conveniently, and is favorable for electric control operations.

The invention relates to the field of faucets used for bathtubs, and aims to provide a three-hole bathtub faucet and an installing method. The three-hole bathtub faucet comprises two water inlet valves and a mixed water pipe, wherein each water inlet valve is provided with a decoration cover and two fixing nuts. A water outlet connector is arranged in the middle of the mixed water pipe, and the two ends of the mixed water pipe are connected with the water inlet valves respectively. The three-hole bathtub faucet further comprises a water outlet connecting pipe of which the lower end is provided with an inner protrusive ring, a locking screw pipe, an upper fixing ring, a water outlet pipe and an installing and fixing assembly. The locking screw pipe is provided with a middle hole and an outer protrusive ring located at the upper end. The upper fixing ring is located between the water outlet connecting pipe and the water outlet connector, and the water outlet connecting pipe is sleeved with the water outlet pipe. The locking screw pipe penetrates into the water outlet connecting pipe, the upper fixing ring and the water outlet connector, and the outer protrusive ring presses the inner protrusive ring. The locking screw pipe is in threaded connection with the water outlet connector. The three-hole bathtub faucet is installed after ceramic tiles are attached, the surface is not prone to being damaged after installing, and leakage is not prone to occurring in the using process.

The invention discloses a tension hinge structure of a steamer overhead door, which mainly comprises a pulley and an overhead door and is characterized in that a pulley fixing plate is fastened at a mounting hole of a steamer body doorpost through a fastening piece, a pressure spring is sleeved on a fixing frame shaft lever and is then inserted into a limit hole of a hinge fixing plate, a hinge is connected to a hinge hole of the hinge fixing plate through a hinge screw rod, and the hinge fixing plate is arranged at two sides of the overhead door and is fastened with the swinging door through a bolt. A connecting bar locking piece is arranged in a swinging sliding chute and is connected with a pressure spring fixing frame through a bolt. Compared with the traditional tension device of the overhead door, the invention can increase the pressing force of a door seal to ensure that steam in the steamer is not easily leaked, just discharges the steam when the overhead door is opened at 15 degrees without easily scalding the operating staff, can not occur the self-closing of the swinging door because the opening position with 90 degrees of the swinging is stable, and can not easily produce fatigue to reduce the tension of the pressure spring because the pressure spring is shorter, thereby the invention has great popularization value.

The invention discloses a disc type positioning spacer, and relates to the technical field of mine supplies. The disc type positioning spacer is provided with a baffle disc, the upper portion of the center of the baffle disc is provided with a connecting hole, a fixing rod is inserted into the connecting hole, the periphery of the baffle disc is evenly provided with elastic positioning wing plates, and the inner ends of the positioning wing plates are fixedly connected with the baffle disc; when the outer sides of the positioning wing plates are upwards bent and the outer edges of the positioning wing plates are located on the same plane, the adjacent edges of every two adjacent positioning wing plates abut against each other in an attached mode or are overlapped, and the positioning wing plates and the baffle disc form a spacer disc which takes the connecting hole as the center. The disc type positioning spacer has the advantages of being simple in structure, easy to operate, high in efficiency, safe in usage, capable of saving energy, general in dry hole and water hole and the like.