30results about How to "Does not increase processing difficulty" patented technology

The invention relates to a method for treating a low-concentration ammonia-nitrogen wastewater or feed liquid. The method comprises the steps: firstly, pre-treating the low-concentration ammonia-nitrogen wastewater or feed liquid, removing impurities in the wastewater or feed liquid, adjusting the pH of the wastewater or feed liquid to 6-7.5, and increasing the surface tension to 40 mN/m or even 65 mN/m or more; then carrying out selective adsorption treatment on the pretreated low-concentration ammonia-nitrogen wastewater or feed liquid with zeolite, making the ammonia-nitrogen average concentration of the wastewater or feed liquid subjected to adsorption less than a predetermined value, when the ammonia-nitrogen average concentration of the wastewater or feed liquid after the adsorption treatment reaches the predetermined value, carrying out regeneration treatment on zeolite by utilizing a regeneration liquid, and thus obtaining an ammonia-nitrogen enriched regeneration liquid; followed by allowing the ammonia-nitrogen enriched regeneration liquid to enter a gas membrane separation device, and carrying out deamination treatment; and finally carrying out concentration treatment on the ammonia-nitrogen removed regeneration liquid, and thus obtaining a recyclable regeneration liquid. The method has the advantages of simple operation, small energy consumption, low operation cost, no secondary pollution, economy and environmental protection.

The invention discloses a terahertz band imaging objective lens with a high relative aperture and a large field of view, and belongs to the technical field of optical lens imaging. The object of the invention is to provide a terahertz band imaging objective lens with a high relative aperture and a large field of view, to realize the high relative aperture and large imaging field of view. The terahertz band imaging objective lens comprises a terahertz filter, a first lens, a diaphragm and a second lens. The first lens and the second lens are both convex lenses and both have positive focal power. The first lens and the second lens are both made of plastics having an absorption coefficient of less than 0.5 cm-1 in a less than 0.5THz band and a refractive index 1.3 to 2. Both the first lens and the second lens have high-order aspheric surfaces as the front surfaces, the image quality of the whole field of view is well corrected, and the high relative aperture and large imaging field of view are realized. The invention is applicable to an objective lens for terahertz imaging.

This invention discloses a method for identifying on-line SFP electric modules, which connects the first and second test pins of a SFP module in short-circuit, when a control unit of a monoboard the SFP module places tests that the module has been plugged in the monoboard, said method includes the following steps: A, the control unit transmits a preset test signal to the first test pin of the SFP module by the pin of its own transmitting test signals, B, the control unit receives the fed back signals from the second test pin of the module by its pin receiving test signals and judges if said fed back signal is the preset signal, if so, it judges that the SFP module plugged in the monoboard current is an electric module, otherwise, it's not.

The invention provides a display system and a display device. The display system comprises a display screen and a lens array, wherein the lens array is arranged on the display side of the display screen and is used for converting a two-dimensional image displayed by the display screen into a three-dimensional image; the display system further comprises a light modulation structure; and the light modulation structure is fixedly arranged between the display screen and the lens array and is used for modulating the length of an optical path, through which the display light sent by the display screen is irradiated into the lens array into two types. Compared with the existing technology of increasing the stereo display depth of field through dynamically adjusting the positions of sub-lenses inthe lens array, the display system does not reduce the resolution ratio of the three-dimensional image and is capable of avoiding the positions of the sub-lenses from generating noise to influence theimage display; and compared with the existing technology of increasing the stereo display depth of field through setting the sub-lenses in the lens array into different focal lengths and calibers, the display system does not need to carry out different designs on the sub-lenses in the lens array, thereby reducing the processing difficulty and cost of the whole display system.

The invention relates to a method for repairing a plunger of a ship steering engine, in particular to a method for repairing the plunger of the ship steering engine, which is particularly suitable tothe repair of the plunger of the ship steering engine for a sea ship. The method sequentially comprises the following steps: preprocessing, spraying, brush plating, bath plating, simulating and examining, and accepting. The invention not only can fully repair the plunger of the ship steering engine to meet total repair requirements, but also can not damage original metallographic structures and base materials of the plunger of the ship steering engine without causing welding distortion, can not increase the processing difficulty of the plunger of the ship steering machine and can not influencethe subsequent bath chromium plating process of the plunger of the ship steering engine after the repair, and is convenient for field maintenance.

The invention discloses a fresh air device and an air conditioner with the same. The fresh air device comprises: a volute assembly, wherein the volute assembly is provided with a mounting cavity and a volute air inlet communicating with the mounting cavity; a sealing cover, wherein the sealing cover is arranged on one side of the volute assembly in a covering mode, the sealing cover and the volute assembly are matched to form an air inlet cavity, and the air inlet cavity communicates with the mounting cavity through the volute air inlet; and a filter screen assembly, wherein the filter screen assembly is arranged in the air inlet cavity and located at the volute air inlet. The filter screen assembly comprises a filter screen and a fixing frame for fixing the filter screen, wherein a silencing side wall is arranged on the fixing frame, a first micropore structure is arranged on the silencing side wall, and the silencing side wall is matched with the volute assembly and the sealing cover to form a silencing cavity. A noise reduction structure is arranged on the fixing frame of the fresh air filter screen and is integrally formed through injection molding, additional parts and installation procedures do not need to be added, and the production cost is reduced.

The invention provides a double-groove siamesed edge-contact spherical bearing, comprising an outer bearing ring, two arrays of bearing beads, two inner bearing rings, two support stands, an inner ring bushing, and a regulation gasket. Both ends of the outer bearing ring are respectively provided with a ring rolling channel corresponding with rolling channels of the two inner bearing rings, and form a contact angle; the inner ring bushing, a shoulder and the regulation gasket lock the inner bearing rings; the invention is assembled by a shaft, a craft gasket and craft screws into a detachable siamesed bearing. The invention adopts siamesed outer bearing rings, which can increase such size and position requirements as concentricity and perpendicularity of the shaft system, and endows the bearing with high precision, thus prolonging the service life of the bearings without increasing the working difficulty. The invention also has the advantages of simple structure, being convenient to be arranged, and adjustable axial preload and so on.

The invention relates to the technical field of slaughter wastewater and waste gas treatment. The invention particularly discloses a slaughter wastewater treatment method and system. The system comprises a primary slag salvaging pool, and the primary slag salvaging pool is connected with a secondary slag salvaging pool; a coarse screen is arranged between the secondary slag salvaging tank and theprimary slag salvaging tank; the secondary slag salvaging tank is connected with an oil separation grit chamber; a rotary drum fine grid is arranged between the oil separation grit chamber and the secondary slag salvaging tank; the oil separation grit chamber is connected with an adjusting lifting tank; a first lifting pump is arranged between the adjusting lifting tank and the oil separation gritchamber; the adjusting lifting tank is connected with an air floatation tank, the air floatation tank is connected with an anoxic tank, the anoxic tank is connected with an aerobic tank, the aerobictank is connected with a secondary sedimentation tank, the secondary sedimentation tank is connected with an aerobic fluidized bed tank, the aerobic fluidized bed tank is connected with a high-densitysedimentation tank, and the high-density sedimentation tank is connected with a sludge storage tank. The method and system have the characteristics of low treatment cost, low operation energy consumption, high treatment efficiency and easiness in reaching the emission standard.

The invention provides a tooth engagement transmission part applied to a precise mechanical structure. The tooth engagement transmission part comprises a body (1), wherein the outer edge of at least one part of the body (1) is provided with an engagement tooth group (3) which takes a rotating shaft of the body (1) as a center, has the same radius and is in arc arrangement. The tooth engagement transmission part is characterized in that the body (1) is in a flake shape, engagement teeth (4) are divided into two layers along the axial direction, the two layers of engagement teeth (4) are the same in tooth form and tooth space, and adjacent engagement teeth (4) between the two layers are mutually staggered along the circumferential direction. The tooth engagement transmission part is stable and precise in engagement, continuous and smooth in transmission and convenient to process.

The present invention discloses an sulfur-containing gas well oil pipe blocking remover, which is prepared by mixing and reacting the following components: 5-24% of citric acid, 50-55% of ethylene glycol, 25-34% of triethanolamine and 0.3-0.6% of sulfamic acid; technical indices are described as follows: the foaming rate is 6.0-8.5%, the content of water insoluble substances is 2.0-2.5%, the flashpoint (opening) is 112-115 DEG C, the normal-pressure static corrosion rate is 0.45-0.58 g/m2*h, the grease dissolution rate is 92-98%, and water separation rate is zero. The invention also disclosesa preparation method of thesulfur-containing gas well oil pipe blocking remover. The sulfur-containing gas well oil pipe blocking remover disclosed by the invention has a relatively strong surface activity cleaning function, can remove oil and scale in blockages at the same time, gives play to the dual blocking removal effect of an oil pipe, can also avoid the burning explosion risk caused by theuse of flammable and combustible materials in the prior art, and can also avoid the problems of treatment difficulty of flowback wastewater and serious corrosion to equipment and the like; in addition, the preparation method is mature, simple in process operation and easy to control and realize industrial production.

The invention discloses a filtering aid for vibrating, slagging and filtering oil materials in edible oil processing and relates to the technical field of edible oil processing. The filtering aid is prepared from the following raw materials in parts by weight: 10-15 parts of microcrystalline cellulose, 5-10 parts of modified polyvinylpolypyrrolidone, 3-5 parts of cinerite, 2-3 parts of polyethylene oxide, 2-3 parts of lotus leaf powder, 2-3 parts of allyl glycidyl ether, 1-2 parts of polyvinyl alcohol resin, 1-2 parts of sepiolite fiber, 1-2 parts of diallyl dimethyl ammonium chloride, 0.5-1 part of tributyl citrate, 0.5-1 part of sodium gluconate and 0.5-1 part of nanometer titanium dioxide. The filtering aid disclosed by the invention can be used for obviously increasing the filtering efficiency of a vibrating slagging filter and prolonging the service life of a filter screen; the difficulty in treating the discharged wastewater is not increased; the filtering aid is mixed with the filtering residue and is removed by filtration.

The invention relates to an insert-type injection pipe joint. The insert-type injection pipe joint comprises an insert and a pipe main body part, wherein the pipe main body part comprises a combination part and a connecting part; the combination part is fixedly connected with the connecting part in an airtight manner; the insert is connected with the connecting part in a sleeving manner; the insert-type injection pipe is characterized in that an annular bulge is arranged on the outside wall of the insert; the annular bulge surrounds the periphery of the outer surface of the insert; a groove which corresponds to the annular bulge is formed in the inside wall of the connecting part; the groove surrounds the periphery of the inside wall of the connecting part; the annular bulge is embedded into the groove; the contact area between the insert and the connecting part can be increased by embedding the annular bulge into the groove, so that the combination strength of the pipe joint can be improved; the insert is combined with the pipe main body part in an injection mode, and the machining difficulty cannot be increased because of the thickness of the wall of the insert.

The invention provides a through hole electrical performance optimization design method, which comprises the following steps of: under the condition that the diameter of a bonding pad and the diameter of an anti-bonding pad are not changed, increasing the copper plating ratio of a through hole so as to improve the electrical performance of the through hole in a PCB (Printed Circuit Board); wherein the copper plating ratio is equal to 1 minus the aperture of the formed hole/the aperture of the drilled hole, the invention further provides a through hole electrical performance optimization design device, a PCB and equipment, the three electrical performance indexes of IL, RL and TDR of a via hole (through hole) are all greatly improved, the design difficulty of a single board is not increased, the processing difficulty of the single board is not increased, and the electrical performance of the through hole in the PCB is effectively improved.

The invention relates to the field of automobile accessories, in particular to an engine cylinder block and a cylinder block oil-gas separation assembly. The engine cylinder block is provided with anoil-gas separation installation cavity, and the oil-gas separation installation cavity is used for allowing an oil-gas separator to be installed inside. The cylinder block oil-gas separation assemblycomprises the oil-gas separator and the engine cylinder block, the oil-gas separation installation cavity is formed in the engine cylinder block, the oil-gas separator is located in the oil-gas separation installation cavity and is connected with an engine, an oil-gas separation channel is formed in the oil-gas separator, and one end of the oil-gas separator channel is connected with an engine crankcase. According to the provided engine cylinder block and the cylinder block oil-gas separation assembly, an oil-gas mixture can quickly enter the oil-gas separator, so that the freezing risk is reduced, and the machining difficulty of an engine cylinder cover can be further reduced.

The invention provides a corner-turning emitter. The corner-turning emitter comprises an emitter body and an emitting head, wherein primary power media are arranged in an inner cavity of the emitter body, the emitting head is arranged at the front end of the emitter body, and a thermal insulation layer is arranged between the emitting head and the emitter body; secondary power media and a triggering structure used for receiving a triggering control command to trigger the secondary power media are arranged in the inner cavity of the emitter body; at least one ejection channel is arranged on the emitting head in the circumferential direction; one end of the ejection channel communicates with the secondary power media, and the other end of the ejection channel penetrates to an ejection channel outside the side face of the emitting head. The problem of striking precision lowering caused by the fact that an emitter is easily obscured by a shelter in the prior art is solved.