210results about How to "Airtight" patented technology

The invention discloses a simulation test system and monitoring method for a disaster of roof water burst and sand inrush induced by coal seam mining. The simulation test system comprises a bracket, wherein a test bin is arranged inside the bracket; a movable coal-mining simulating dragging plate is arranged at the bottom of the test bin; a water-sand gathering channel obliquely arranged is arranged below the coal-mining simulating dragging plate; a water-sand collecting device is arranged at the outlet of the water-sand gathering channel; the test bin is formed by a bottom plate, a right side wall, a front transparent plate body, a back transparent plate body and the coal-mining simulating dragging plate; a plurality of pore water pressure sensors and a plurality of pressure sensors are arranged inside the test bin. According to the invention, the simulation test for the disaster of the roof water burst and sand inrush induced by coal seam mining is carried out by adopting the technical scheme that the test bin is filled with coal measure strata simulating materials, so as to obtain water-sand inrush parameters of different stratum combinations, therefore, the identification degree of the characteristics of the disaster of operating face water burst and sand inrush induced by coal seam mining is improved.

The invention discloses a fermenting and drying treatment device capable of reliably and effectively fermenting and drying organic wastes with simple structure for avoiding cost increment. The device is provided with an airtight container, a hollow cylindrical rotating shaft rotating freely and vertically arranged in the container, a plurality of stirring blades extending to the horizontal direction from multiple upper and lower positions of the rotating shaft, a driving mechanism for driving the rotating shaft to rotate, an air supply mechanism for supplying air to the container, and an exhaust port for exhausting the air in the container. The plurality of stirring blades comprises stirring blades which have hollow interiors and are provided with through holes communicating the outside from the hollow space, the air supply mechanism is connected at the axial end of the rotating shaft, and the hollow space of the rotating shaft is mutually communicated with the hollow space of the stirring blades. Therefore, the air supplied by using the air supply mechanism is exhausted from the through holes of the stirring blades through the rotating shaft. The organic wastes are put into the container, the air is introduced into the container, the organic wastes are stirred, and the organic wastes are subjected to fermenting treatment and drying treatment based on the action of aerobic microbes.

The invention discloses a device for opening and closing a back door of a rubbish bin, which belongs to the technical field of rubbish storage and transportation devices. The device for opening and closing the back door of the rubbish bin comprises a carriage, wherein the back end of the carriage is provided with a back door frame; the back door is arranged in and matched with the back door frame; the matching face with the back door on the back door frame is provided with a gasket; the upper part of the back door is rotatably connected with the carriage through a connecting hinge pin; both sides of the upper part of the back door is provided with a straight groove backwards and downwards; the connecting hinge pin is inserted into the straight groove; both sides of the carriage are hinged with a two-way hydraulic oil cylinder respectively; the extension end of a piston rod of the two-way hydraulic oil cylinder is hinged with the end part of a long arm of an L-shaped locking arm; a short arm of the locking arm is inserted between a closing limited hinge pin and an opening limited hinge pin arranged on the back door; and the middle part of the locking arm is hinged with the back door frame. The two-way hydraulic oil cylinder can drive the locking arm to rotate to open or close the back door; and the back door has flexible opening and closing, capability of remote control, reliable use and good sealing performance without leakage in the process of transportation, and can be used for treating urban rubbish.

The invention provides a vacuum sucker and relates to a vacuum sucker achieving convenient and rapid picking and placing of a small diameter annular watch component on an automatic watch production line. A connecting plate, at least 2 metal suckers and at least 2 rubber suction nozzles are arranged on the vacuum sucker. An upper plate and a lower plate are arranged on the connecting plate. The upper plate is connected with the lower plate through a fastening piece in a locking mode. A thread through hole is arranged in the upper plate. A groove is arranged in the lower surface of the upper plate. A hollow cavity is formed between the upper plate and the lower plate. At least 2 metal sucker installing holes are arranged in the lower plate. The thread through hole and the hollow cavity are communicated with the metal sucker installing hole. A metal sucker is connected with each metal sucker installing hole. A rubber suction nozzle is connected with each metal sucker. Center through holes are uniformly arranged in the metal sucker and the rubber nozzle. Due the facts that a separated type structure is adopted, the connecting plate and the metal sucker are all made of metal materials,the vacuum sucker is convenient to machine, low in cost, convenient to dismantle and convenient to clean. The component damage is easy to change. The vacuum sucker is strong in practicality.

The invention relates to an electrochemical analysis in-situ cell for X-ray diffraction and a testing method. The combination of an X-ray diffractometer and a battery charging / discharging tester can be realized. The in-situ cell comprises an upper flange and a lower flange which are fixedly connected together, a cavity formed in the middle of the lower flange, a counter electrode column extending into the cavity, and a positioning device connected with the counter electrode column; a hole is formed in the middle of the upper flange; a beryllium sheet covers the hole to form a beryllium window; an electrode slice, a diaphragm and a counter electrode slice are arranged in the cavity; the upper flange is connected with an electrode lead; the counter electrode column is connected with a counter electrode lead. According to the electrochemical analysis in-situ cell, the X-beam generated by the X-ray diffractometer passes through the beryllium window to detect and analyze the crystal structure of a positive electrode material in real time, and therefore, the problem of difficult real-time detection on the change of the crystal structure in the charging and discharging process of the battery material is effectively solved; the electrochemical analysis in-situ cell is ingenious in design, simple to operate, and low in cost.

The invention relates to a cocoyl dimethyl ammonium iodine oxide complex, and provides a chemical intermediate for preparing an iodophor disinfectant. The cocoyl dimethyl ammonium iodine oxide complex comprises the following components the following components in part by weight: 80 to 90 parts of cocoyl dimethyl ammonium oxide, 10 to 15 parts of iodine (I) and 2 to 5 parts of citric acid. A synthetic process comprises the following steps of: adding 80 to 90 kilograms of cocoyl dimethyl ammonium oxide into a closed stainless steel reaction kettle with temperature control, heating to the temperature of between 50+ / -2 DEGC, and adding 2 to 5 kilograms of citric acid; heating to the temperature of between 95+ / -2 DEGC, and adding 10 to 15 kilograms of iodine; and reacting in the reaction kettle for 3 hours, allowing a reactant to perform system circulation for 1 hour, and cooling to the temperature of between 30+ / -2 DEGC for discharging. The cocoyl dimethyl ammonium iodine oxide complex is in the appearance of dark violet thick liquid, and has the pH value of between 5 and 6 and iodine content of over 10 percent.

The invention relates to culture solution filling method and system for chlamydomonas culture. The method comprises the following steps: heating, disinfecting and cooling sea water, and then storing the sea water; mixing the sea water and a culture solution with nutritive salt in a various nutritive salt tanks, and filtering through a sand filtering device; and inputting the mixture into a chlamydomonas culture reactor through a pipeline with a quantitative control clamp. The system comprises a constant-pressure storage tank which is provided with a solution transmission pipeline, and is connected with a sea water heating and disinfecting device, and a nutritive salt tank which is used for filling the nutritive solution to the solution transmission pipeline through a pump, wherein the output end of the solution transmission pipeline is connected with the branch of a material liquid transmission pipeline on a culturing bracket through the sand filtering device, and is communicated with a hanging bag type photobioreactor, and the material liquid transmitting pipeline is arranged on a culture support. The method disclosed by the invention can realize the automatic, sterile and unwatched line production of culture solution. The system disclosed by the invention has a closing property, a systematic property, a quantitative property, a cleaning function and a buffering effect.

The invention belongs to the technical field of aquaculture, and especially relates to a pond bottom aeration system which comprises a monitoring system, a control system, an air supply system, an air transportation system and an air jet system which are connected with one another in sequence, wherein the air jet system is distributed at different water areas and water layers at the bottom of a pond; the control system is used for controlling the air supply system, the air transportation system and the air jet system to work according to the detection result of the monitoring system; and the air jet system is used for outputting air to the different water areas and water layers at the bottom of the pond. The pond bottom aeration system is capable of efficiently dissolving oxygen, comprehensively supplying oxygen and supplying oxygen in layers, is favorable in air transportation performance, is provided with a whole pipeline system which is free of air leakage and corrosion, is easy to clean, has the advantages of low cost and low energy consumption, and is capable of improving an oxygen dissolving effect, activating a water body and realizing ecological aquaculture while realizing the all-around or local three-dimensional air supply of the pond.

A humidor 30 for the retaining and preserving of tobacco products includes multiple independent storage compartments 29 arranged vertically with hygrometers 9 mounted externally for ease of monitoring internal humidity levels. Independent storage compartments swivel in a variety of directions allowing multiple opening configurations and accessibility. Rotational means is achieved via a fulcrum and cantilever mechanism 12. Compartments are sealed air tight utilizing a sealing gasket material 15 imbedded within the side wall of the compartment above and mating with the side wall 11 of the compartment below. The vertical array of independent storage compartments swivel around a common bottom support base 24. Each independent storage compartment utilizes an integrated venting structure comprised of a bottom vent panel 10, a venting side panel 7, a humidity generating means, and a hygrometer 9. The humidor is preferably made of wood.

A drainage laryngeal mask comprises a mask bag, a main tube and a gas filling tube. An aerating cavity and a draining cavity are arranged in the main tube, the aerating cavity is communicated with an aerating hole on the mask bag, the tail end of the draining cavity extends out of the main tube to be arranged at the tail of a small end of the mask bag, a bending angle of the main tube ranges from 70 degrees to 100 degrees, and the section of the tail of the small end of the mask bag is elliptical. The drainage laryngeal mask brings convenience for medical staff to operate, reduces suffering of a patient and is good in sealing property, and gas is prevented from entering the esophagus of the patient to aggravate reflux of the stomach of the patient when gas flows through a catheter of the trachea of the patient.

This invention relates to a metallic armored rigid coaxial cable including an inner conductor, a dielectric layer, an outer conductor and an outer jacket characterizing that the inner conductor is oxygen-free copper wire, the dielectric layer is formed by step cylindrical blocks in series matched in convexes and concaves of heads and tails made of multiple sets of polysulfone, polyethersulfone, polyimide and PEEK engineering plastics, the outer conductor is oxygen-free copper pipe and the jacket is made of the engineering plastics. Advantages: reliable transmission, high mechanical performance, anti-radiation, anti-aging, fire and good in air-tightness.

The invention discloses a method for processing deformation joints of a clean room, belonging to the deformation joint processing of buildings. The method mainly comprises the following steps: designing the nodes of the deformation joints; and constructing the deformation joints of the clean room. The method provided by the invention can easily and conveniently process the deformation joints of the clean room. The deformation joints processed by the method have the advantages of good airtight and watertight performance and clean and beautiful appearance, and can meet the requirement of non-deformation for fork-lift trucks to travel.

The invention provides a high temperature resistant RFID electronic tag and a preparation method thereof. The RFID electronic tag cooperates with a reader-writer to work, and at least comprises a tag antenna and a tag chip, wherein the tag chip is integrated with a master controller as well as an antenna RF circuit and a memory which are connected with the master controller; the tag chip is protected by adopting a secondary package to form an SMD package structure; the substrate in the antenna is a high temperature resistant ceramic antenna substrate, and silver coating layers are arranged on both the positive and negative surfaces of the ceramic antenna substrate; the tag antenna is welded and fixed on the ceramic antenna substrate; and a sealed casing is sleeved outside the RFID electronic tag, the casing is made of a high temperature resistant PPS material, and a high temperature resistant pouring sealant is filled in the casing. The product provided by the invention can withstand cooking at the temperature as high as 150 degrees centigrade and the negative pressure cooling, and can be widely applied to various industrial production lines, medical disinfection and other application environments.

The invention discloses a horizontal explosion-proof piezoresistor which comprises a piezoresistor main body and a shell, wherein, the shell is formed by assembling a cover and a housing, the housing has an opening at one side and an inner cavity for accommodating the piezoresistor main body, the bottom surface of the housing is provided with lead wire bores, the piezoresistor main body is installed into the inner cavity through the opening, the surface of the piezoresistor main body is provided with a first extraction electrode and a second extraction electrode which bend to the lead wire bores, pass through the lead wire bores and extend out from the housing, and a filling cavity is formed between the outer wall of piezoresistor main body and the inner wall of the inner cavity and is filled with an insulation explosion-proof material. When the piezoresistor provided in the invention fails, splitting of fragments in the situation of explosion is avoided, which enables open fire to be effectively inhibited; the shell is of a horizontal structure, which enables the explosion-proof piezoresistor assembled at the back of a circuit board to have a height less than 10mm, thereby meeting current market demands for electric appliances that explosion-proof piezoresistor products should be small, thin and light.

The invention provides a high-sound-insulation fireproof door. The high-sound-insulation fireproof door comprises a door frame (1) and a door leaf (2), wherein one side of the door leaf is hinged to the door frame (1). The door leaf (2) further comprises an outer panel (21) and an inner panel (22). Two punching acoustical boards (28) are further arranged between the outer panel (21) and the inner panel (22). Heat insulating and sound insulating core materials (23) are filled into an interlayer between each punching acoustical board (28) and the outer panel (21) or the inner panel (22). An air-filled cavity (29) is formed between the two punching acoustical boards (28). Due to the fact that the air-filled cavity composed of the two punching acoustical boards is formed in the door leaf of the high-sound-insulation fireproof door, the sound insulating effect is good, the heat preserving, airtight and fireproof functions are further possessed, an edge covering structure does not need to be arranged, the structure and the process are simple, and the appearance is attractive and high-grade.

The invention aims to provide a method for simulating a soil body water saturation-drainage circulation process and carrying out a compression test on a soil body. The invention provides a soil body water saturation-drainage circulation compression test method, comprising the following steps of: 1) preparing a test sample needed by a lateral confinement compression test or consolidation test; 2) enabling the test sample in the step 1) to be saturated; 3) draining; 4) saturating; 5) repeating the steps 3) and 4) for a plurality of times; and 6) carrying out the lateral confinement compression test or the consolidation test. A device for realizing the method mainly comprises an axial loading system and a pressure chamber. The pressure chamber comprises a pressure chamber cylinder, a top cover and a base. In a test process, the test sample is mounted on a pot clay plate and an annular porous stone; a test sample loading plate is mounted on the test sample; and a force transmission device of the axial loading system penetrates through the top cover to be contacted with the test sample loading plate.

The invention discloses an energy-saving and emission-reducing petroleum well servicing rig, which is driven by electricity. Based on a hydraulic energy storage principle, corresponding hydraulic stations and corresponding action elements are started according to different hook loads, so that the whole machine has a low installed power and total operational energy consumption which is only one quarter of that of a conventional well servicing rig, thereby saving a large amount of energy. The well servicing rig is convenient in transfer and installation due to an arranged cantilever vertically telescope derrick and an arranged folded retractable drill stand and is low in labor intensity and good in economic benefit.

The invention discloses a side wall double-sided over-constrained movable foldable house, and relates to the technical field of foldable houses. The foldable house comprises main supporting frames, shear fork mechanisms, ceiling supporting devices, floor supporting devices, side plate supporting devices and vertical supporting devices. After the device is folded, all components are folded into themain supporting frames, so that space waste is greatly reduced; and meanwhile due to the fact that the size is small after the device is folded, maneuvering transportation can be carried out along with a vehicle; the device is easy to control, and unfolding and folding of all plates can be completed without manual work; according to the device, the double-sided over-constrained shear fork mechanisms are arranged between stand columns at the two ends, so that the overall rigidity of a system is greatly improved; according to the device, by increasing the number of unfolding stages, an ultra-large unfolding space is obtained, and the problem that the unfolding ratio of an existing foldable house is too small is solved; and besides, replaceable sealing rubber strips are arranged at the joints of all components of the device so that complete sealing of the space after unfolding can be achieved, and the sealing problem of the existing foldable house is solved.

A sealed ceramic lining composite oil tube comprises a ceramic lining composite oil tube and a coupling. The invention is characterized in that the external surface in the coupling is installed with a corrosion-resistant boronized layer. The middle part of inner wall of coupling is provided with a groove. An acrylonitrile-butadiene rubber ring is provided in the groove. The acrylonitrile-butadiene rubber ring and the end plane of ceramic lining composite oil tube is closely matched and hermetically sealed. The manufacturing method of the invention comprises the following steps: grooving at the inner part of coupling, cleaning the surface of coupling, boronizing the cleaned grooved coupling, cleaning the boronized coupling, assembling the cleaned boronized coupling and the acrylonitrile-butadiene rubber ring, plating copper on the screw cap of ceramic lining composite oil tube, and assembling the boronized coupling and the ceramic lining composite oil tube. The invention causes that the air tightness and corrosion resistance at the coupling obtain the level of 13Cr stainless steel coupling which is commonly used by prior gas well for replacing the 13Cr stainless steel coupling and reducing the investment of oil tube used in gas well.

The invention relates to a concentric clamping structure for a cleaning brush of chemical mechanical polishing (CMP) post cleaning equipment and a using method. The concentric clamping structure comprises the cleaning brush, an idle shaft structure, a telescopic driving shaft structure, a left swing frame and a right swing frame, wherein taper hole positioning and rectangular groove force transferring are achieved between the idle shaft structure and the cleaning brush; taper hole positioning and square uniform force transferring are achieved between the telescopic driving shaft structure and the cleaning brush; the left swing frame supports the idle shaft structure; and the right swing frame supports the telescopic driving shaft structure. The cleaning brush comprises a brush shaft and a brush body arranged on the brush shaft in a sleeving mode. A centering taper shaft and a square shaft are arranged at the right end of the brush shaft and are concentric with the telescopic driving shaft structure. A positioning taper shaft and a rectangular shaft are arranged at the left end of the brush shaft and are concentric with the idle shaft structure. A purified water inlet communicating with an inner cavity of the brush shaft is formed in the center of the centering taper shaft. The concentric clamping structure is compact and simple, the clamping layout of the cleaning brush is optimized, the clamping concentricity of the cleaning brush and the sealing performance of the purified water through joint end can be effectively improved, and convenient and fast replacement is achieved.

The invention discloses a dust separation and air volume balance device for a grinding work station. The device comprises a housing, wherein a connecting seat is arranged on the upper end of the housing, and an annular partition plate is fixed at the edge of the lower end of the connecting seat. The dust separation and air volume balance device for the grinding work station is simple in structureand is convenient to use. A rotating shaft is connected with an output shaft of the grinding work station through a coupler, so that a grinding head and blades can be driven to rotate at the same time; the blades rotate to provide ascending air pressure, so that dust is filtered through a filter screen of a diversion cover, and finally the dust is collected; the housing covers the outer side of the grinding head, and certain air impermeability is achieved, so that flying of the dust is avoided, and collection is facilitated; and an air flow is sent to the center from the lower side of the housing through a fan, and a stably ascending spiral air flow is formed through the guide of an end ring and inclined plates with the cooperation of the threads of the partition plate. The stably ascending spiral air flow cooperates with the ascending air pressure of the blades, so that the rise of carried dust is facilitated, the air flow is stable, and the dust removal effect is good.

The invention relates to a light kiln vehicle. The light kiln vehicle comprises a rectangular vehicle body frame formed by welding a steel channel, a deformed steel bar, a band steel and an I-shaped steel; the bottom of the I-shaped steel is fixedly connected with a kiln vehicle wheel shaft and kiln vehicle wheels; and a fireproof heat resistance concrete vehicle surface with the thickness of 10cm is poured on the vehicle body frame, so that the stability and the sealing performance of the kiln vehicle are improved. The light kiln vehicle adopts the structural form of combining concrete with steels, has the advantages of no deformation, windproof property, corrosion resistance, low cost, long service life and the like, and has strong practical value.

The invention discloses a hazardous waste incineration line flue gas purification treatment system, which comprises a quench tower, a cyclone dust collector, a dry deacidification tower, a filter bag, a wet washing tower, an alkali liquor neutralizing tower, a steam heater and a chimney. The outer wall of the quench tower is fixedly connected with a quench tower spray gun cooling water ring pipe, a quench tower spray gun compressed air ring pipe and a quench tower spray gun protection air ring pipe, the upper end of the quench tower is provided with a quench tower flue gas inlet, and the lower end of the quench tower is provided with a spray gun compressed air inlet pipe and a quench tower spray gun protection fan. According to the hazardous waste incineration line flue gas purification treatment system, the problem that flue gas purification treatment is not thorough is solved, the process is more reasonable, more convenient and more effective, the flue gas purification treatment effect is greatly improved, and finally the flue gas reaches the national flue gas emission standard, and after flue gas generated after incineration is purified by the flue gas treatment system, the concentration meets the emission requirement, and a better use prospect is brought.

The invention provides a high-barrier transparent composite packaging film applicable to a boiling sterilization process. The composite packaging film is successively provided with, from exterior to interior, an outer printing layer, an intermediate barrier layer and an inner heat sealing layer, wherein the layers are bonded together by a polyurethane adhesive, the outer printing layer is a bisynchronously drawing nylon film, the intermediate barrier layer is a polyester film coated with polyvinylidene chloride emulsion, and the inner heat sealing layer is a boiling-grade casting polypropylene film. The high-barrier transparent composite packaging film applicable to the boiling sterilization process meets requirements of the process for sterilizing food by boiling at 121 DEG C for 30 min, can effectively overcome the problems that a conventional high-barrier composite packaging film is non-transparent and aluminum foils easily fracture when the conventional high-barrier composite packaging film and aluminum foil soft-plastic packaging bags are subjected to vacuum-pumping packaging, and has the characteristic of a three-layer composite structure; and the high-barrier transparent composite packaging film has good transparency, puncture resistance and mechanical strength and has high barrier performance which is equivalent to high barrier performance of a plastic-aluminum composite film.

The invention discloses a miniature box-type drag chain scraper flipover leacher. The miniature box-type drag chain scraper flipover leacher comprises a box-type leacher shell, wherein a plurality of driving chain wheels are arranged in the box-type leacher shell, and are sleeved by box chains; spaced push plates are fixedly arranged on the outer side of the box chains; material storage tanks, manholes and discharge holes are respectively formed in the upper end and the lower end of the box-type leacher; feeding augers are arranged below the material storage tanks; a plurality of push box lattices as leaching units are arranged in the box-type leacher; circulating mixed oil forms a soaking pond above each push box lattice; a plurality of oil buckets are formed in the bottom surface of the box-type leacher shell; and circulating pumps are arranged at oil inlets of the oil buckets. The miniature box-type drag chain scraper flipover leacher adopts a dual-layer multi-nozzle spray-type low material level, is suitable for a preform which is large in particle size and high in moisture content (5%-8%) and of which the normal moisture is not greater than 8%-10%; the equipment operation is controllable; the production operation is stable; blanking and meal discharging are stable; the residual meal discharge oil is not greater than 1.0%; the leaching time is controlled at about 90-120 minutes in general according to the oil variety; and the optimal effect of continuous production of the special oil is achieved.

The invention discloses a gas film concrete construction formwork construction technology. The technology comprises the steps that 1, a membrane material is calculated according to the shape of a building and then cut into flakes; 2, the membrane material is cut and then spliced into the shape of the building seamlessly by means of high-speed friction; 3, the formed membrane material is fixed to abuilding foundation ring beam, air is pressed into the membrane material through air supply equipment, and the pressure difference is generated inside and outside the membrane material; 4, after themembrane material inflates to reach the preset building shape, a polyurethane insulating layer is sprayed to the membrane material; 5, after the membrane material is formed through polyurethane insulating layer hardening, concrete is sprayed to the surface of the membrane surface, and a gas film concrete construction formwork is obtained. The gas film concrete construction formwork construction technology has the advantages of being easy to manufacture and form, prefabricated forming can be achieved, and the special-shaped cambered surface is made very easily.

The invention relates to a nutation centrifugal ball-bearing mill, comprising a base, a power input belt pulley, a main shaft, an inclined hole shaft sleeve, an up-down milling chamber, a support and a winnowing mechanism. Nutation centrifugal movement drives a medium and a material to do three-dimensional high-intensity centrifugal movement, and the medium in the same weight or volume can obtain higher kinetic energy, thus the sphere diameter of the medium is reduced, the number is increased, and the grinding probability is increased; and compared with the traditional drum-type ball-bearing mill under the condition that equivalent power is input into the centrifugal ball-bearing mill, the overall dimension is reduced by 2 / 3, the total weight of equipment (containing the medium) is reduced by 3 / 5, the total system energy consumption is reduced by more than 30%, and the energy conversion rate of the medium in unit volume or weight can reach up to more than10 times of that of the traditional ball-bearing mill. The centrifugal ball-bearing mill provided by the invention is especially applicable to superfine grinding.

The invention discloses a regulator eyeliner. The eyeliner comprises a pen tube, a brush arranged at the front end of the pen tube and used for smearing, a liquid storage cavity used for storing eyeliner liquid, a liquid guide core used for conveying the eyeliner liquid from a liquid guide cavity to the brush, and a regulator used for adjusting the liquid outlet amount of the brush through the capillary action. The regulator comprises a drainage tube. The liquid guide core is arranged in the drainage tube. The regulator eyeliner is characterized in that the side wall of the drainage tube is provided with a regulating channel for communicating the inner and outer side surfaces of the drainage tube, and a regulation area composed of a plurality of spacers arranged on the outer surface of thedrainage tube. The regulation area comprises a plurality of regulation sections with different capillary gravitation at the regulating channel. The capillary gravitation of the regulation sections close to the liquid storage cavity is larger than those of the regulation sections close to the brush. The liquid outlet amount of the eyeliner can be adjusted, so that the liquid outlet amount is uniform. The eyeliner is easy to control by a user.

The invention discloses a connecting structure of a rear bumper and a rear apron board of an automobile. The connecting structure comprises the rear bumper (1) which is connected with the rear apron board (2) through a bolt (3). The invention is characterized in that a pull rivet nut (4) is arranged on the rear apron board (2), the bolt (3) penetrates through the rear bumper (1) and the pull rivet nut (4) and then is connected with the rear bumper (1) and the rear apron board (2), and fluid sealant is filled between the threaded fit surface of the bolt (3) and the pull rivet nut (4). The connecting structure can effectively prevent rain from flowing into a trunk from the connecting bolt holes of the rear bumper and the rear apron board and has the advantages that the bolt hole can be produced conveniently and fast, the efficiency is high, and the appearance is attractive.

The invention relates to a fireproof weathertight airtight door which comprises a door frame and a door leaf. Adjacent vertical sides of the door frame and the door leaf are hinged together. Locking mechanisms are arranged between the inner periphery of the door frame and the inner periphery of the door leaf. A lock catch is arranged on non-hinged sides of the door frame and the door leaf. An inflatable pneumatic tube is arranged at the inner periphery of the door frame. The door leaf comprises an inner board and an outer board. The inner board and the outer board are connected through a circular side board. The fireproof weathertight airtight door is characterized in that a projecting edge projecting to one side of the door frame is arranged on the periphery of the outdoor board of the door leaf, an inner turned edge is arranged at the outer edge of the projecting edge, and accordingly a groove is formed on one face of the projecting edge, which is adjacent to the door frame, and contains a flame-retardant rubber strip. An outer turned edge is arranged at the inner edge of the outer side of the door frame, and the outer turned edge tightly presses the flame-retardant rubber strip when the door leaf is closed. A fireproof strip is compounded to the circular side board on the periphery of the door leaf, and the outer edge of the fireproof strip is contacted with the inner edge of the flame-retardant rubber strip. The fireproof weathertight airtight door is airtight, fireproof and weathertight and has no application range limitations.