35results about How to "Reduce closure" patented technology

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment tridimensional artificial wetland system that is used for the industrial waste water treatment of small-scale isolated pollution sources. The invention aims at providing a tridimensional artificial wetland system that is used for sewage treatment and that has small floor occupancy, high hydraulic load, high pollution load and long service life so as to overcome the defects of the current sewage treatment of big artificial wetland floor occupancy, low hydraulic load, low pollution load and short system service life. The key points of the invention are that: the artificial wetland for sewage treatment adopts a tridimensional assembled structure of vertical current artificial wetland and horizontal subsurface flow artificial wetland, and base materials are filled in various directions to form the tridimensional artificial wetland system for sewage treatment; the tridimensional artificial wetland system for sewage treatment comprises a water collecting header, a porous water-filtering vertical current artificial wetland bed, a first-stage regulating tank, a water drop chute, a grid tank, a second-stage regulating tank, a horizontal subsurface flow artificial wetland bed and a water collecting tank.

The invention discloses a manufacturing method of impregnated bond paper for low formaldehyde furniture. The method comprises the steps of raw paper selection and treatment, uncoiling, pre-wetting, impregnation, first time drying, gluing, preparation of coating glue, second time drying, deviation adjustment traction and cutting. The manufacturing method has the advantages that the quality of the impregnated bond paper prepared with the method is high, the content of formaldehyde is further reduced, the uniformity of impregnation and gluing of the impregnated bond paper is guaranteed in the manufacturing process, the flexibility of a glue layer and the sealing performance of the surface of the glue layer are guaranteed, and accordingly, the problems that the content of formaldehyde is high and the quality is not high in impregnated bond paper are fundamentally solved.

The invention relates to a steam sterilizing process for the disinfection of medical appliances in hospital, and the steam sterilizer employing the steam sterilizing process, which comprises the steps of vacuumizing, preheating, sterilizing and cooling down. The steam sterilizer comprises a steam sterilizing box, a valve group, an air filter, a steam generator, a vacuum pump and an automatic control system.

The invention discloses a selective coating for absorbing solar light and heat which belongs to field of solar energy equipment, particularly, relates to a selective absorbing coating which is used on the surface of the flat-plate solar collector and is used for absorbing and utilizing solar energy. The selective coating for absorbing solar light and heat is formed by compounding a plurality of layers of metal and non-metal, the selective solar energy is attached on a metal flat plate; the characteristics are as follows: the attachment sequence of the coating on the metal flat plate is as follows: a bottom layer-aluminum nitride composite layer-aluminum nitride composite layer- aluminum oxide (wherein, after the second layer of aluminum reacts with N2, whether new aluminum nitride composite material is generated). The invention provides a selective absorbing film with excellent selective absorption characteristic of solar energy and firm film, which is provided with high binding strength, good weatherability, as well as high production efficiency in production.

The invention discloses a radiation patch for a microstrip antenna and the microstrip antenna and relates to the technical field of antennas. The radiation patch for the microstrip antenna and the microstrip antenna aim at solving the problems that broadband-orientation and miniaturization of an existing microstrip antenna can not be achieved and the cross polarization rejection ratio is not ideal. Cross-shaped grooves are formed in the radiation patch for the microstrip antenna and comprise at least four long sealing grooves arranged in a cross shape. The long sealing grooves are not communicated with one another. The radiation patch for the microstrip antenna and the microstrip antenna are used for design of antennas of a mobile communication base station.

The invention relates to a method for thermally spraying a monel metal coating on the surface of the stainless steel. The method comprises the following steps: decontaminating the surface of a stainless steel substrate, sand-blasting and roughing the decontaminated stainless steel substrate, thermally spraying a nickel-aluminum bond coating on the roughed surface, thermally spraying a monel metal work coating to cover the bond coating, and carrying out sealing treatment on the monel metal coating. By adopting the method provided by the invention, the test of metallurgical microscopy and microhardness proves that the monel metal coating prepared on the surface of the stainless steel can effectively reduce the pore and cavity of the coating, and can effectively seal the pore and cavity of the surface by using the hole-sealing filler. As the coating hardness is influenced by the characteristics of the thermal spraying, the coating has material oxide inclusion, and the coating hardness is improved by 1.426 times in comparison with that of the primary monel metal.

The invention discloses an apparatus of detecting sealing performance of a low temperature liquid tank, and an operation method of the same. The low temperature liquid tank includes an inner tube, an outer tube, an interlayer between the inner tube and the outer tube, and a detection apparatus body, wherein the detection apparatus body includes a pressure meter which is in pipe connection with the inner tube, a vacuum-pumping set which is in pipe connection with the interlayer; the vacuum-pumping set includes a vacuum gauge which is used for detecting the degree of vacuum of the interlayer, a vacuum pump which is in pipe connection with the air outlet end of the vacuum gauge, and an argon content detector which is arranged at the air outlet end of the vacuum pump; and a jacket vacuum valve is in pipe connection between the vacuum gauge and the interlayer. The apparatus of detecting sealing performance of a low temperature liquid tank utilizes the vacuum pump to quickly realize vacuum-pumping; the argon content detector is arranged at the output end of the vacuum pump, thus being convenient for detecting whether leakage exists in the inner tube after the inner tube is filled with argon; by means of the vacuum gauge and the pressure meter, the apparatus of detecting sealing performance of a low temperature liquid tank can quickly detect whether leakage exists in the outer tube; and the apparatus of detecting sealing performance of a low temperature liquid tank is simple in structure, is low in manufacturing cost, and is significant in detecting the sealing effect of the low temperature liquid tank.

The invention discloses an opening and closing control method and system for a stepping motor control valve of a meter, and belongs to the technical field of meters. The problems that opening and closing control of an existing stepping motor control valve of a meter is unstable, and consequently, air leaks from the valve and the valve deforms are solved. The opening and closing control method andsystem for the stepping motor control valve of the meter comprises the following steps that a stepping motor is started to execute an opening and closing program of the valve; in the opening and closing program, the operation step number and a locked-rotor current of the stepping motor are detected; according to the detecting result of the operation step number of the stepping motor and the detecting result of the locked-rotor current, valve opening-closing in-place judgment is conducted; if the operation step number and the locked-rotor current meets the preset conditions of valve opening-closing in-place, it is determined that the valve is opened and closed in place, and the opening and closing program is finished; and if the operation step number and the locked-rotor current do not meetthe preset conditions of valve opening-closing in-place, or one of the operation step number and the locked-rotor current does not meet the preset conditions of valve opening-closing in-place, it isdetermined that the valve is not opened and closed in place, and the opening and closing program continues being executed.

The invention relates to imitated bare concrete integrating primer paint and middle coating and a preparation method thereof, and belongs to the technical field of building decoration paints. The imitated bare concrete is prepared from the following components in percentage by mass: 15 to 30 percent of pure acrylic emulsion, 5 to 18 percent of silicon resin emulsion, 0.1 to 1 percent of cellulose,0.1 to 1 percent of wetting agents, 0.1 to 0.5 percent of anti-foaming agents, 0.5 to 1.5 percent of waterproof agents, 1 to 8 percent of titanium dioxide, 1 to 15 percent of talcum powder, 1 to 15 percent of mica powder, 15 to 30 percent of heavy calcium carbonate, 0.5 to 1.5 percent of propanediol, 0.1 to 0.5 percent of preservatives, 0.1 to 1 percent of thickening agents and water for supplementing the total percentage to 100 percent. The imitated bare concrete involved in the invention has the advantages that the sealing effect of the primer paint and the coloring effect of the middle coating in the bare concrete are integrated, so that the construction process is simplified; the effect and function close to bare concrete are reached; the manufacturing cost is low; the construction isconvenient; and the construction efficiency is improved.

The invention provides a method for exploiting natural gas hydrate. The method comprises the following steps that a gas injection well and a production well are built in a natural gas hydrate to-be-exploited area; according to the formation permeability of the natural gas hydrate to-be-exploited area and the well spacing between the gas injection well and the production well, the injection pressure of the injection well is determined; according to the injection pressure, the gas injection well is opened to inject gas containing carbon dioxide into a natural gas hydrate reservoir of the natural gas hydrate to-be-exploited area to displace pore fluid of the natural gas hydrate reservoir, and the gas injection well, the natural gas hydrate reservoir and the production well communicate with one another; the produced gas is collected from the production well, and the composition of the produced gas is monitored; and when the produced gas is lower than a set value or the collection task is completed, the gas injection well and the production well are closed to complete the collection. High-pressure gas displaces pore fluid to reduce natural gas partial pressure in a pore fluid phase, meanwhile, the high-pressure gas effectively inhibits invasion of a peripheral water phase, and the exploiting effect is improved.

The invention discloses a sulfhydrylated ssDNA probe-functionally modified MOFs composite material as well as a preparation method and application of the MOFs composite material. The composite material comprises an MOFs material UiO-66-NH2, a bifunctional cross-linking reagent Sulfo-SMCC, a sulfhydrylated ssDNA probe, fluorescent dye RhoB and the like. The method comprises the following steps that: a sulfhydrylated ssDNA probe-functionally modified MOFs composite material is manufactured; the TEM diagram and the Zeta potential of the composite material are characterized; the composite material is used for specific detection of liquid alcohols; detection limit detection and repeatability experiments are carried out by taking ethanol as a representative. Results show that the sulfhydrylated ssDNA probe-functionally modified MOFs composite material realizes simple, effective, low-cost and high-sensitivity detection of liquid alcohols, and a new research direction is provided for development of portable detection equipment of the liquid alcohols.

The invention belongs to the technical field of electromagnetic valves, and particularly relates to a two-way electromagnetic valve which comprises a valve body. A first mounting opening and a secondmounting opening are formed in the left side and the right side of the valve body correspondingly; a middle partition plate is installed in the valve body; a stepped base is mounted in the middle of the middle partition plate; an upper mounting base is mounted on the valve body; a coil is mounted in the upper mounting base; a fixed iron core is mounted in the upper mounting base; a stepped valve core is mounted in the upper mounting base; the end, close to the fixed iron core, of the stepped valve core has magnetism; the lower end of the stepped valve core is arranged to be in a stepped shape;and the stepped valve core is right opposite to the stepped base and can be inserted into the stepped base. The electromagnetic valve is simple in structure, flexible in action, low in production cost and high in working reliability.

A semiconductor package is disclosed and includes a package substrate having a top surface and a bottom surface, an interposer mounted on the top surface of the package substrate, first semiconductorgrains and second semiconductor grains mounted on the interposer in a side-by-side manner, and a stiffener ring secured to the top surface of the package substrate. The stiffener ring encircles the first semiconductor grains and the second semiconductor grains. The stiffener ring comprises a reinforcement rib striding across the interposer. Through this way, the semiconductor grains are reinforcedwith the stiffener ring and the reinforcement rib, and therefore, coverage and sealing of the semiconductor grains are reduced, heat generated by the semiconductor grains is not blocked by other blocking objects so that heat dissipation of a semiconductor package is not influenced, and the heat dissipation speed and the heat dissipation capability of the semiconductor package are improved. Moreover, the mechanical strength of the semiconductor package can be improved by the stiffener ring and the reinforcement rib, and the warpage of the semiconductor package can be reduced.

The invention belongs to the technical field of expansion devices and discloses a damping and buffering expansion joint which is mainly and technically characterized by comprising profile steel side beams arranged pairwise, wherein a rubber sealing tape is arranged between the profile steel side beams; the top edge at the inner side of the profile steel side beam is of a concave-convex shape formed by circularly arranging convex teeth and grooves; the rubber sealing tape is fixed together with the profile steel side beam through a bolt; the bolt is arranged at the groove arranged at the inner side of the profile steel side beam; and an elastic pressing bar is arranged on the rubber sealing tape. The damping and buffering expansion joint provided by the invention has the advantages that profile steel machining is simplified, the rubber sealing tape is not needed to be limited inside a profile steel die, and therefore, simple production is realized. The length of each convex tooth is increased, so that the expansion amount of an expansion device is increased, bridge impact caused by jumping is reduced, the service life of the expansion joint and the service life of the bridge are prolonged, noise pollution to the environment is reduced, and the rubber sealing tape is convenient to replace.

The invention discloses a double-headed water boiling flow line device of cured food. The double-headed water boiling flow line device comprises a rack, a blanking groove, two sets of boosting water circulation systems, a wide gel groove, a valve, a vertical lifting mechanism and a water boiling groove, wherein the blanking groove is formed by two rectangular molding grooves; the rear ends of the molding grooves are connected with the front end of the wide gel groove; the rear end of the wide gel groove is connected with the water boiling groove; the vertical lifting mechanism is arranged in the narrow water boiling groove; the blanking groove, the wide gel groove and the water boiling groove are all mounted on the rack; water spraying openings of the boosting water circulation systems are mounted on the inner wall of the front end of the blanking groove. As the double-headed water boiling flow line device disclosed by the invention is provided with the double-headed blanking groove, the yield of a flow line is improved, and the problem that an operator cannot easily debug or process faults due to that a pure wide flow line blanking groove is too wide is solved. The double-headed water boiling flow line device can be used for conveniently carrying out boiling operation.

The invention provides a fracturing pipe column and a fracturing method. The fracturing pipe column comprises an oil pipe, a hydraulic anchor, a first packer, a differential pressure sliding sleeve and a second packer which are sequentially connected from top to bottom. The differential pressure sliding sleeve comprises a sand blasting cylinder, a connecting cylinder and a sliding sleeve. The connecting cylinder is fixedly connected to the upper end of the sand blasting cylinder; the sliding sleeve is arranged in the sand blasting cylinder, the outer wall of the sliding sleeve is provided with an outer circular bead, the outer circular bead is located below a cylinder body connecting part, a liquid storage cavity is formed between the outer circular bead and the cylinder body connecting part, and the side wall of the sand blasting cylinder is provided with a liquid outlet communicated with the liquid storage cavity; a bearing conical surface for bearing a ball is arranged on the inner wall of the sliding sleeve, and the bearing conical surface can be expanded outwards under the action of set thrust applied by the ball; a first clamping groove and a second clamping groove which are sequentially distributed up and down are formed in the connecting cylinder, and the sliding sleeve is provided with a spring claw. By means of the fracturing pipe column and the fracturing method, the technical problems that in the prior art, the fracturing pipe column dragged through the oil pipe is adopted, liquid in a well needs to be discharged after one layer is fractured, construction is interrupted, the workload is increased, and the fracturing effect is affected are solved.

The invention discloses a chemical reagent leakage capturing and adsorbing device in the technical field of chemical reagent detection. The device comprises a capturing mechanism and an adsorbing mechanism, the capturing mechanism comprises an upper ring and a lower ring, the upper ring and the lower ring are connected through a connecting piece, capturing holes are formed in the inner side walls of the upper ring and the lower ring, and capturing cavities communicated with the capturing holes are formed in the upper ring and an inner ring; the adsorbing mechanism comprises an adsorption body, a partition plate is arranged in the adsorption body and divides the adsorption body into an installation cavity and a cavity, a pump assembly is fixed in the installation cavity, an air inlet of the pump assembly communicates with a first pipeline communicating with the upper ring, a first valve is installed on the first pipeline, the lower ring communicates with a second pipeline, and the second pipeline communicates with the cavity; the device further comprises a controller and an air pressure sensor, the air pressure sensor obtains air pressure information in the capturing cavities, and the controller controls opening and closing of the first valve and the pump assembly based on the air pressure information. The chemical reagent leakage capturing and adsorbing device is simple in structure, leakage of chemical reagents can be detected, and the safety of equipment is improved.

The invention discloses colorless, odorless and nontoxic tea-seed oil for cosmetics and a preparation method of the tea-seed oil. The preparation method comprises the following steps: (1) degumming, acidification and alcohol-water extraction: adding water into crude oil of the tea-seed oil for degumming, and conducting acidification, alcohol-water extraction and filtration to obtain tea-seed oil subjected to alcohol-water extraction; (2) absolute ethyl alcohol extraction: extracting the tea seed oil subjected to alcohol-water extraction with absolute ethyl alcohol and conducting filtering to obtain the tea seed oil subjected to absolute ethyl alcohol extraction; (3) heterogeneous dewaxing: adding activated carbon into the tea seed oil extracted by the absolute ethyl alcohol, and conducting stirring, cooling and filtering to obtain dewaxed tea seed oil; and (4) solvent residue removal and activated carbon adsorption: subjecting the dewaxed tea seed oil to solvent residue removal, activated carbon adsorption and filtration, so as to obtain colorless and odorless tea seed oil for cosmetics. The method is low in cost, uses water and a safe organic solvent, does not use a high-temperature deodorization method, and has the advantages of high decoloration, deodorization and detoxification rates, low loss rate of the tea seed oil, high purity of the tea seed oil and mechanization.