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 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.

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 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 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 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 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.