44results about How to "Good laminar flow" patented technology

In an optical system measuring sample characteristics, by reducing the amount of ambient absorbing gas or gases and moisture present in at least a portion of the illumination and detection paths experienced by vacuum ultraviolet (VUV) radiation used in the measurement process, the attenuation of such wavelength components can be reduced. Such reduction can be accomplished by a process without requiring the evacuation of all gases and moisture from the measurement system. In one embodiment, the reduction can be accomplished by displacing at least some of the absorbing gas(es) and moisture present in at least a portion of the measuring paths so as to reduce the attenuation of VUV radiation. In this manner, the sample does not need to be placed in a vacuum, thereby enhancing system throughput.

An aspirator with an aspirator body and an exhaust port coupled to the body, and having a plurality of integral high pressure gas nozzles positioned along the aspirator body the body. The aspirator body includes a high pressure integral conduit in communication with a nozzle array having a plurality of high pressure gas nozzles. The nozzles are arcuate, extending away from the body toward an aspirator centerline, the nozzles extending from the aspirator body at a preselected angle toward the centerline in a direction from an atmospheric air aspiration port toward the exhaust port. A high pressure inlet port integral with the body is in communication with the conduit and a high pressure gas source. The gas may be input into the inlet port using a high pressure inlet fitting, which may be threaded onto the inlet port outside the aspirator body. The aspirator is fabricated by additive manufacturing techniques.

An aqueous printable electrical conductor (APEC) is defined as a dispersion comprising metal powder (with specific surface properties) dispersed into an aqueous acrylic, styrene/acrylic, urethane/acrylic, natural polymers vehicle (gelatine, soy protein, casein, starch or similar) or in a film forming reactive fatty acids mixture without a binder resin. The aqueous printable dispersion can be applied to substrates through different printing processes such as flexography, gravure, screen, dry offset or others. Exemplary substrates include: (1) coated paper, (2) uncoated paper, and (3) a variety of plastics with treated and untreated surfaces. When printed at a thickness of 1-8 μm, heating to cure is not required as the dispersion cures at ambient temperatures. When the dispersion is used for any of the above applications it will provide sufficient electrical conductivity to produce electrical circuits for intelligent and active packaging, sensors, radio frequency identification (RFID) tag antennae, and other electronic applications.

Method of manufacturing of components used in the field of aviation aircraft and, specifically, an aircraft engine nacelle lipskin. Instead of spinning flat plates, this method uses spinning a cylinder, thus eliminating waste material. It also eliminates the need for rivet lines which results in better laminar flow. Further, there is a reduction of other costs in addition to reducing drag.

The cigarette with super low free radical content features its delayed released plant polyphenol microcapsule content of 0.02-0.6 wt% of shredded tobacco. The plant polyphenol microcapsule is first dissolved in water, alcohol, mixture of water and alcohol or water solution of propylene glycol and the solution is then sprayed to shredded tobacco. The delayed released plant polyphenol microcapsule may be catechin microcapsule, gallic acid microcapsule as degraded product of tannin or grape polyphenol microcapsule. The added plant polyphenol has stability raised by 9-12 times, extraneous antioxidant performance raised by 5-6 times and intracorporal antioxidant performance raised by about 10 times. Its effective component may be absorbed by oral cavity and respiratory system to eliminate free radical in body while meeting the need of smokers.

The metal organic compound vapor deposition apparatus for growing zinc oxide semiconductor film includes growing chamber, sampling chamber, movable gate connecting the growing chamber and the sampling chamber, and atom generator for activating and cracking nitrogen source gas with gas outlet pipe set inside the growing chamber. The growing structure is one double-layer wall water cooling structure and provided with motor driven horizontal sample rack, sample heater, oxygen source inlet pipe, zinc source inlet pipe and exhaust port. During operation, cleaned substrate is fed via the sampling chamber into the growing chamber, the sample growing plane is fixed onto the rack, different reaction gases are input to grow crystal film of different performance. In the same time, nitrogen atom obtained through activating and cracking nitrogen source gas is fed to the growing chamber to obtain high quality n-type and p-type ZnO semiconductor crystal film.

The invention discloses a structure of a high-power strip beam electron gun with a rectangular section and relates to a vacuum electronic device technology. A cathode is a rectangular cylinder structure; a focusing electrode is a square frame-shaped structure spliced by two focusing planes with a certain inclination angles in the transverse direction; an anode is a structure with a hollow passage with a certain taper; an anode head is fixedly arranged at the center of a bottom surface inside an anode supporting barrel; the periphery of the rectangular cylinder cathode is matched with the hollow square frame at the bottom of the focusing electrode; the cathode and the focusing electrode are positioned in the anode supporting barrel; two symmetrical planes of the focusing electrode are parallel to two symmetrical planes of the anode and the central axes of the focusing electrode nd the anode are coincident; and a certain distance is formed between the focusing electrode and the anode. The electron gun disclosed by the invention has a direct current power of about 15MW, specification of 50mm*4mm of an electron beam section and compression ratio of 5:1 in the narrow edge direction and has excellent fluidity of an beam inner layer at the position of a beam waist. The generation problem of a strip electron beam is solved. The high-power strip beam electron gun with the rectangular section can be used in a high-power strip beam device and can be matched with a focusing system to realize long-distance stable transmission.

A gas turbine engine component has a component body configured to be positioned within a flow path of a gas turbine engine, wherein the component body includes at least one internal cavity. At least one inlet opening is formed in an outer surface of the component body to direct flow into the at least one internal cavity. At least one outlet from the internal cavity, wherein the at least one outlet is located at a lower pressure area in the internal cavity than the at least one inlet opening such that flow is drawn into the internal cavity from the at least one inlet opening and expelled out the at least one outlet. A gas turbine engine and a method of enhancing laminar flow for a gas turbine engine component are also disclosed.

The invention discloses semiconductor processing equipment. The semiconductor processing equipment comprises a reaction chamber and a process pipe, wherein at least part of the process pipe is positioned in the reaction chamber, the process pipe is provided with an accommodating part, an air inlet part and an air outlet part, the air inlet part is provided with an air inlet, the air outlet part isprovided with an air outlet, the process pipe is provided with a plurality of air inlets and a plurality of air outlets, the air inlets and the air outlets are distributed at intervals in the axis direction of the process pipe, the air inlets are communicated with an accommodating part, and the air outlets are communicated with the accommodating part. The semiconductor processing equipment is advantaged in that a problem that in existing semiconductor processing equipment, the effect of improving the uniformity of gas in the reaction chamber is poor can be solved.

A micromechanical component has a structure such that a material flow is guided from at least one preferred direction for the purpose of uniformly enveloping the micromechanical component.

The invention belongs to the technical field of 3D printing, and relates to a blowing device of a metal 3D printer. The blowing device comprises a shell, and an air inlet and an air outlet are formedin the shell; an airflow channel is formed in the shell; the airflow channel comprises N layers of flow channels which are sequentially superimposed from top to bottom, wherein N is greater than or equal to two; the air inlet communicates with the air outlet through the airflow channel; a baffle with the height of h is arranged between the lower edge of the air outlet and the lower edge of the shell; a bottom-layer flow channel outlet is formed in the baffle, and the flow channel at the bottommost layer in the airflow channel communicates with the bottom-layer flow channel outlet; the distancebetween the lower edge of the bottom-layer flow channel outlet and the lower edge of the shell is h1, wherein h1 is less than h. According to the blowing device of the metal 3D printer, vortexes at ashielding gas outlet can be effectively reduced, the laminarity of shielding gas on the surface of a powder bed can be obviously improved, and the quality of the forming surface in the printing process is ensured.

The invention discloses a disposable butyronitrile glove production wastewater treatment method. The method comprises the following steps: collecting incoming water through an adjusting tank; removing slag through a coagulation air flotation machine 1; cooling through a cooling tower; enabling the wastewater to pass through a hydrolysis acidification tank and a biological selection tank, and sequentially pass through a first-stage A reaction tank, a first-stage O reaction tank, a second-stage A reaction tank and a second-stage O reaction tank for treatment; separating the sludge from water through an MBR membrane tank; and sterilizing the sewage, carrying out deslagging and discharged, and pressing the sludge into sludge cakes to be transported outwards. The invention relates to a disposable butyronitrile glove production reuse water treatment process, which comprises: filtering incoming water through a multi-medium filter; pumping to a reverse osmosis device, and treating the generated concentrated water through a catalytic ozonation tower and a two-stage A/O tank; and feeding the sewage enters a Fenton reaction tank to be treated. According to the present invention, after the two-stage RO filtration concentration, 70% of the purified water is reused for production, and 30% of the concentrated water is further deeply treated to achieve the emission requirement and then is discharged.

The invention provides a flow equalizing fan box and an embryo culture workstation, wherein the flow equalizing fan box comprises a box body; a volute-free centrifugal fan; a support frame, which comprises at least two baffle plates, wherein each baffle plate comprises a horizontal part and an inclined upward bending part, and an included angle alpha formed between the horizontal part and the bending part is an obtuse angle; the upper end width W1 of the bending part is larger than the bottom end width W2; the bending part is provided with a hollow structure, and the inner part and the outer part are communicated through a through hole; the volute-free centrifugal fan is arranged in an area enclosed by the support frame; and parameters of the box body, volute-free centrifugal fan and support frame meet certain conditions. The box has the advantages of uniform wind speed, low noise, good laminar flow effect and the like.

The invention discloses a hose filling and tail sealing system which comprises an annular conveying device, and a variable-pitch feeding device, a benchmarking device, a purging device, a filling device, a tail folding device, an impressing device, a visual detection device, a discharging device and a waste removing device which are sequentially arranged in the conveying direction of the annular conveying device, and one side of the annular conveying device is a horizontal conveying side; one side of the annular conveying device is a horizontal conveying side, the other side of the annular conveying device is a vertical conveying side, the variable-pitch feeding device, the discharging device and the waste removing device are located on the horizontal conveying side of the annular conveying device, and the benchmarking device, the purging device, the filling device, the tail folding device, the impressing device and the visual detection device are located on the vertical conveying side of the annular conveying device. The invention further discloses a hose filling and tail sealing method. The method comprises the steps that feeding is conducted; performing benchmarking; blowing and sweeping; performing filling; folding the tail; carrying out impressing; if the visual inspection is qualified, discharging is carried out, and if the visual inspection is unqualified, waste is removed. The hose filling and sealing system and the hose filling and sealing method have the advantages that the layout is reasonable, the production efficiency and the production quality are improved, and the like.

The invention relates to the technical field of Raman laser, in particular to a flowing gas stimulated Raman scattering frequency conversion device, which is characterized in that one side of a gas circulation main pipeline is a gas flow driving section, the other side of the gas circulation main pipeline is a light transmission section, the gas flow driving section is provided with a gas flow driving device, one end of the light transmission section is coaxially connected with a first light guide arm, and the other end of the light transmission section is coaxially connected with a second light guide arm; a laser input cavity mirror is arranged at the end, away from the light passing section, of the first light guide arm, a first isolation optical window is arranged at the end, connected with the light passing section, of the first light guide arm, a second isolation optical window is arranged at the end, connected with the light passing section, of the second light guide arm, and a laser output cavity mirror is arranged at the end, away from the light passing section, of the second light guide arm. One end of the gas circulation main pipeline is provided with a first diversion balance pipe communicated with the first light guide arm, and the other end is provided with a second diversion balance pipe communicated with the second light guide arm. According to the invention, heat dissipation is ensured, conditions of light path deflection distortion and the like are reduced, and the device can be used for Raman frequency conversion of high-power or high-repetition-frequency laser.

The invention discloses a portable magnetic coagulation sedimentation device. The portable magnetic coagulation sedimentation device comprises a machine body. The interior of the machine body is successively provided with a driving chain wheel and a driven chain wheel along a horizontal direction. The driving chain wheel and the driven chain wheel are rotatably connected in the machine body. A mudscraper chain is connected between the driving chain wheel and the driven chain wheel. The outer wall of the mud scraper chain is uniformly and fixedly provided with a plurality of scraping plates. The machine body is provided with a motor. A transmission chain is connected between the motor and the driving chain wheel. The interior of the machine body is fixedly provided with an inclined plate.The inclined plate and an effluent weir are successively installed above the mud scraper chain. The water outlet end of the inclined plate is communicated with the water inlet end of the effluent weir. The top end of the machine body is provided with a water distributing hole. The portable magnetic coagulation sedimentation device is capable of integrating a mud scraper and an efficient inclined plate sedimentation basin, has the characteristics of large wetted perimeter, small hydraulic radius, good laminar conditions, and no flocculant flow interference to particle sedimentation, and has thecharacteristics of strong overload capacity and large transmission power through chain transmission, and is convenient for maintaining and skid-mounting.