349results about How to "Easy to clog" patented technology

The invention discloses a UBF reactor used for coupled denitriding via anaerobic ammonia oxidation-sulfur-based autotrophic denitrification, and a system and a denitriding method thereof, and belongs to the technical field of waste water processing. The denitriding method is suitable to be used for processing high mmonia nitrogen low C/N waste water, partial nitrification is used for providing all reaction substrates of anaerobic ammonia oxidation, marcasite is used for providing electron donors of sulfur-based autotrophic denitrification; porous limestone is taken as a supporting framework of a limestone filling layer; and nitrite nitrogen generated via nitrosation, and nitrate nitrogen generated via nitrification and anaerobic ammonia oxidation are taken as electron acceptors. The denitriding method is high in ammonium-nitrogen removal rate; operation stability is high; compared with conventional nitration-denitrification denitriding method, the denitriding method possesses following advantages: no extra organic matter is added as the electron donor, marcasite is ued for providing the electron donors of sulfur-based autotrophic denitrification bacteria, cost is low, controllability is high, effluent is stable, sludge yield is low, and energy consumption is low.

A system for cold gas dynamic spraying of particulate material has a de Laval nozzle and two or more radial particle inlets located between the throat and the outlet of the nozzle, the two or more particle inlets arranged symmetrically around a linear flow path of the nozzle. Blocking of the inlets is reduced by controlling pressure of particle carrier gas to provide a stable particulate material injection pressure before and during introduction of working gas into the nozzle, and/or by clearing the particle inlets of residual particles after a spraying process. Such a system and associated method combines benefits of both downstream and upstream cold gas spray systems. Further, a nozzle for spraying particulate material having a cross-sectional shape that is narrower in a middle section compared to edge sections provides coatings with superior cross-sectional profiles.

The present invention comprises an improved extruder die assembly and method for using same to improve the quality of dimensional design aspects of extruded, complexly shaped, direct expanded food products. The improved system includes an improved die assembly comprising a first die and a second die having at least one orifice. A majority of the total pressure drop occurs in the first die to pre-expand the dough prior to the dough entering the second die. The orifices in the first die can be individually configured to obtain differing dough flow speeds resulting in a desired flow pattern. A plurality of extruded dough ropes formed at each orifice exit of the first die can meld together in the bore and exit the second die. Color or flavor can be added at the first die to enhance the food product.

It is an object of the invention to provide an effective technique for reducing adverse effect of a dust suction device on the operability of a power tool, in the power tool which can suck dust generated during operation. The power tool has a motor 111 and a tool body 103 that houses the motor 111. A tool bit 119 is coupled to a tip end region of the tool body and driven by the motor 111 to perform a predetermined operation. The power tool further includes a dust suction part 151 through which dust generated during operation by the tool bit 119 is sucked and which covers at least a tip end of the tool bit 119, a dust transfer passage 153 through which the dust sucked into the dust suction part 151 is transferred and which is partly disposed within the tool body 103, and a dust discharge port 174 through which the dust transferred through the dust transfer passage 153 is discharged to the outside. Further, the dust discharge port 174 is disposed on the opposite side of the motor 111 from the tool bit 119.

The invention discloses a sandstone reservoir self-diverting acidizing method, which comprises the following steps of (1) injecting diverting acid into a sandstone reservoir to be used as ahead liquid; (2) injecting processing liquid into the sandstone reservoir; (3) injecting subsequent liquid into the sandstone reservoir; and (4) injecting displacing liquid into a pit shaft, and jacking acid liquid in the pit shaft into the deep path of the reservoir. The diverting acid is prepared from the following ingredients including 12 to 15 percent of HCl, 3 to 10 percent of diverting agents, 4 to 8 percent of additives and the balance water, wherein the diverting agents are erucyl amide hydroxysulfobetaine; the processing liquid is various kinds of conventional processing liquid suitable for sandstone acidizing; the subsequent liquid is prepared from the following ingredients including 5 to 15 percent of HCl, 1 to 2 percent of gel breakers, 4 to 8 percent of additives and the balance water; the displacing liquid is diesel oil, gasoline or 3-percent ammonium chloride solution. The percentage of the ingredients is mass percentage. The sandstone reservoir self-diverting acidizing method has the advantages that the uniform acid distribution effect of the acid liquid in the reservoir can be improved; the subsequent gel breaking residue is reduced; and the inhomogenous reservoir acidification is realized.

In a fuel injection valve, a substantially arc-shaped chamfered portion in a substantially arc shape of cross section is formed on an edge of an inner wall portion of each opening end of a corresponding nozzle hole of a nozzle plate to further expand a whole diameter of an injection stream of fuel passed through a plurality of obliquely penetrated nozzle holes. In a manufacturing method for the nozzle plate, circulating a fluid mixed with an abrasive through each nozzle hole is carried out to polish opening ends of the respective nozzle holes which are faced against the external of the fuel injection valve in a form of substantially arc shape of cross section with the abrasive. Furthermore, grinding the respective major surfaces of a punched plate material which becomes the nozzle plate together with vicinities to the respective opening ends of the nozzle holes is carried out.

An expansion valve includes a valve body 1. The valve body 1 includes a first throttle 5 and a second throttle 6 arranged downstream from the first throttle 5. The second throttle 6 includes an outer surface of the second valve portion 16 and an inner surface of the second valve hole 13. A helical groove or a linear groove is formed in the outer surface of the second valve portion 16 or the inner surface of the second valve hole 13. Further, at least either one of the outer surface of the second valve portion 16 and the inner surface of the second valve hole 13 is tapered toward a distal end of a valve member 4.

The present invention provides means for selecting a direct drive type electrically driven expansion valve (Z). The present invention includes a compressor (121), an external heat exchanger (123), a direct drive type electrically driven expansion valve (Z), and an internal heat exchanger (131). The rating torque equivalent friction factor E of the direct drive type electrically driven expansion valve (Z) is set to 0.31 or more.

The invention discloses a method for removing SO2 by utilizing soda ash waste liquid and carbide waste slag. CaCl2 in the soda ash waste liquid is utilized to react with the SO2 in flue gas, white CaSO3 settlement is generated, HCl is released and dissolved in water to form hydrochloric acid with very low concentration; Ca(OH)2 in the carbide waste slag is used for neutralizing HCl and generating CaCl2 and water, and CaCl2 is recycled. The desulphurization process mainly consumes Ca(OH)2 in the carbide waste slag. If no local soda ash waste liquid, calcium chloride dehydrate (CaCl2*2HO) produced by the soda ash waste liquid can be purchased for preparing CaCl2 solution. The carbide waste slag can be replaced by lime. The process is characterized by one high, two low and three points of environmental protection. The process firstly has high desulphurization rate, secondly has low fixed-asset investment and low running costs and thirdly utilizes the waste liquid and the waste slag to reduce the environmental pollution. Compared with all prior desulphurization processes, the process has great advantages.

The invention discloses a visualization experiment device and method of wall collision of high-temperature molten metal droplets in a negative pressure environment. The experiment comprises: an air flotation damping experiment table, a metal droplet generation system, a temperature controllable wall surface system, an environment pressure adjustment system, an automatic trigger high-speed camera system and an image analysis system. The metal droplet generation system generates metal droplets; the environment pressure adjustment system realizes the precise control of the environment pressure within a greater negative pressure range when the droplets collide the wall surface; and the automatic trigger high-speed camera system records an image when the droplets collide the wall surface, and finally, the image analysis system performs quantitative analysis on a video to provide accurate physical variables such as a droplet speed, a droplet diameter, a spreading radius, a height and deformation characteristics. By adoption of the experiment method, the metal droplets can be generated in the negative pressure environment, and an experiment scheme is provided for the mechanism research ofthe movement characteristics when the metal droplets collide the wall surface. The method is simple in operation, safe and reliable in process, and wide in experiment research application value.

A spout for foaming and saving water has a shell, a foaming assembly mounted in the shell, a sieve assembly mounted on a faucet end of the foaming assembly and a regulator mounted through the foaming assembly. The foaming assembly has a sleeve, a distributor mounted in the sleeve, a foaming ring mounted between the sleeve and the distributor and an inlet valve mounted on a faucet end of the sleeve. The spout is mounted on an outlet of a faucet to allow water to flow through the sieve assembly and the foaming assembly and mix with air to foam to provide foaming water flowing out of the spout. Impurities in the water do not clog the foam assembly and water flow is regulated with the regulator selectively mounted in a water flow hole of the inlet valve.

The invention relates to a titanium dioxide nanotube array film and a preparation method thereof. The technical plan is: firstly put the titanium-containing metal sheet into the electrolyte by grinding and polishing it as an anode, anodize it for 0.5-5 hours under the condition of a controlled voltage of 10-60V; then put the anodized titanium-containing metal sheet from the electrolysis Take it out of the liquid, put it in a high-temperature furnace, and keep it warm in a protective atmosphere at 300-800°C for 0.5-10 hours; then cool it to room temperature with the furnace in a protective atmosphere, and form carbon-doped carbon on the surface of the cooled titanium-containing metal sheet. Heterogeneous or carbon-nitrogen co-doped titania nanotube array films. The invention has the characteristics of no external carbon source or nitrogen source, low reaction temperature, simple and reliable method, and controllable content of doping elements; the prepared carbon-doped titanium dioxide nanotube array film, or carbon-nitrogen co-doped titanium dioxide nanometer The elements doped in the tube array thin film are evenly distributed.

The invention relates to a preparation method of a microchannel array plate. The method comprises the steps of: (1) taking two different optical fiber glass rods, wherein one cannot be corroded by corrosive liquid and one can be corroded by corrosive liquid, arranging the two glass rods closely, and melting the two glass rods under high temperature into a whole, drawing the whole one time or multiple times into a long and slender glass rod, cutting the fine drawn glass rod into small sheets to obtain a microchannel plate blank; (2) corroding the blank to remove the core so as to obtain a through-hole equipped microchannel plate; and (3) conducting hydrophobic treatment on the microchannel plate. The microchannel array plate and collection device provided by the invention can cooperate with an acceleration generation device to achieve high throughput and rapid production of uniform micron-scale liquid drops by inertia force.

A channel-cell system is provided for detecting the presence and/or measuring the presence of analyte particles in a sample stream comprising: a) a laminar flow channel; b) two inlet means in fluid connection with said laminar flow channel for respectively conducting into said laminar flow channel (1) an indicator stream which may comprise an indicator substance which indicates the presence of said analyte particles by a detectable change in property when contacted with said analyte particles, and (2) said sample stream; c) wherein said laminar flow channel has a depth sufficiently small to allow laminar flow of said streams and a length sufficient to allow particles of said analyte to diffuse into said indicator stream to the substantial exclusion of said larger particles in said sample stream to form a detection area; and d) outlet means for conducting said streams out of said laminar flow channel to form a single mixed stream.

The invention relates to a seepage pipe, film or vessel for agricultural irrigation and a making method and application thereof. People first use water permeability of pottery clay to sinter permeation irrigation pipes of pottery clay, and then uses a rubber foam technique to manufacture permeation irrigation pipes of rubber, and some people apply a laser perforating method on plastic pipes to produce porous permeation irrigation pipes of plastic. Due to high cost, inconvenient application or blockage often happening during application, the pipes of the types are not popularized or widely applied. The product of the invention comprises a plasticization forming matrix material (1), an inert filler(2) with melting point higher than plasticizing temperature which is added in the plasticization forming matrix material and is wrapped over by a release agent, and a bent seepage channel (3) which bypasses the inert filler and is formed by dissolving the release agent in the matrix material, wherein, The weight ratio between the inert filler and the plasticization forming matrix material is 5-30 : 100 and the weight ratio between the inert filler and the release agent is 100 : 5-10. The product is applied as pipe, film or vessel for agricultural irrigation.

The pet vacuum includes a canister, a vacuum pump, a flea remover, and a vacuum line connecting the flea remover to the vacuum pump. The vacuum pump is screwed onto the top of the canister which may be filled with a fluid pesticide, to trap and kill fleas as they are drawn into the pet vacuum through the flea remover. The flea remover includes a housing having a handle and a tip formed with an orifice. The vacuum line terminates at this orifice and when a flea is drawn into the flea remover, through this orifice, it travels the length of the vacuum line until it is deposited in the canister. The flea remover may also include a light source attached near the tip of the housing to illuminate the working area on the pet.

Provided is a cutting bar for dental use that can cut both dentin and enamel with a single bar unanesthetically and efficiently without causing any pain or unpleasant sensation in a patient, in particular, a cutting bar for dental use that can fundamentally solve the problem in that a cutting blade of a cutting bar rotating at low speed comes into contact with hard enamel present in a surface layer of a tooth during cutting of carious dentin to cause unpleasant sensation in a patient. A cutting bar for dental use includes a head in which a cutting blade is formed; a neck leading to the head; and a handle joined to the neck through an intermediation of a joint portion, wherein diamond abrasive grains are electrodeposited in a predetermined range extending from a substantially maximum diameter portion of the head to the neck.

To provide an improved air scavenging type two-cycle combustion engine equipped with a pressure reducing device in which clogging of a decompressing hole can easily be removed, a two-cycle combustion engine includes a delivery passage (32) for introducing air into a combustion chamber (9) prior to an air-fuel mixture. This delivery passage (32) has a downstream opening (32c) through which the air is introduced into the combustion chamber by way of a scavenging port (40a). A decompressing hole (38) is defined for communicating the combustion chamber (9) to a portion of the delivery passage (32) and is closed by a piston (16) then ascending, at a timing delayed relative to closure of an exhaust port (31).

On a seat base (11) of a floor member (10), a rear surface plate (11C), an operator's seat mounting plate (11D) on which an operator's seat (17) is mounted at a position higher than a footrest area (12) on which the foot is placed, and a duct accommodating space (14) formed in the vertical direction among the rear surface plate (11C), the operator's seat mounting plate (11D), and a rear position (12B) of the footrest area (12) are provided. An indoor air inlet duct (23) having the front surface side opened as a filter fitting hole (25) and introducing air in an occupying space (21) toward an indoor unit (22) of an air-conditioning unit is provided on the duct accommodating space (14). An indoor air filter (26) for catching dusts in the air is provided on the filter fitting hole (25) of the indoor air inlet duct (23).

The present invention discloses an oil-soluble temporary blocking agent and a preparation method thereof, wherein a thermoplastic polymer or a mixture comprising a thermoplastic polymer and one or a plurality of materials selected from a surfactant, an antioxidant and a coupling agent is adopted as a spinning raw material and is subjected to melt electrospinning to prepare the oil-soluble temporary blocking agent. According to the present invention, the oil-soluble temporary blocking agent can be adopted as the temporary blocking agent so as to be applied in the petroleum extraction field, such that the purposes of low cost and complete petroleum extraction and no pollution are achieved; the average diameter of the obtained temporary blocking agent of the present invention is a few microns to tens of microns, even achieves the nano-scale, the distribution is wide, and the oil-soluble temporary blocking agent is suitable for various types of oil wells with complex structures, particularly the temporary blocking operation on the core with the small crack width; the oil-soluble temporary blocking agent has characteristics of high oil dissolution rate, water insolubility, acid insolubility, low residual pollution on stratum, high solubility in diesel fuel, and easy blocking releasing; and the preparation method has characteristics of easily available raw materials, simple preparation process, low cost, and good applicability.

The present invention relates to a gas combustor, comprising: a gas intake valve, the bottom of a valve tube axially formed in a valve member is installed with a filter member, a first spring is installed above the filter member and inside the valve tube, the top of a valve pin is protruded out of a tube opening formed at and communicated with the top of the valve tube, a plug outwardly protruded at the bottom of the valve pin is abutted against the first spring, the plug is enabled to seal the tube opening through the first spring being stretched, and when the top of the valve pin is axially subject to a force, the valve pin and the plug are downwardly moved, the first spring is compressed thereby enabling the tube opening to be opened.

The invention relates to a recovery method of solvents and monomers in the industrial production of rare earth-isoprene rubber. The distance between the top of a solvent recovery tower and a side withdrawing position of the solvent recovery tower is 60 to 70 theoretical plates. Part of the refined hexane solvent, which is withdrawn from the side line, in the gauge tank is pumped into a storage tank and is used as a solvent for production of isoprene rubber, and part of isoprene is refluxed to the top of a separator. The distance between the top of an isoprene refining tower and a side withdrawing position of the isoprene refining tower is 70 to 90 theoretical plates. Gas isoprene is withdrawn from the side line of the isoprene refining tower, part of isoprene is pumped into an adsorption tower by a side line withdrawing gauge tank so as to obtain polymer grade isoprene monomers; and part of isoprene is refluxed to the top of a separator. In the provided method, the solvent is recovered and refined only through two rectifying tower provided with a side withdrawing device, the unreacted monomers are recovered, the fresh monomers are refined, the equipment investment and energy consumption are reduced, the hexane solvent can be used in a circle repeatedly, and part of isoprene can also be used in a circle repeatedly.