391results about How to "Avoid entrainment" patented technology

A multipurpose aerosol medication delivery apparatus that includes a collapsible/expandable, or a fixed volume, or a combination of partially fixed volume and partially collapsible/expandable holding chamber for use with a metered dosed inhaler (MDI) and/or any standard small volume nebulizer. The holding chamber is designed to deliver-aerosol medication particles generated by an MDI; aerosol medication particles generated by a nebulizer; a single gas or a mixture of gases; a single gas or a mixture of gases that can yield a gas density that will enhance aerosol delivery of medication with both MDI and nebulizer; a single gas or a mixture of gases that will yield and deliver an oxygen concentration to a patient ranging from room air concentration to 100%. The device includes a reservoir that stores nebulized aerosol generated during exhalation to be inhaled during the next breath. The device also included a one way valve to prevent carbon dioxide generated during exhalation from rebreathing by not allowing the exhaled air from entering the holding chamber. The device includes an exit port with a second one way valve that allows the exhaled air to exit the device but closes during inhalation to prevent any entrainment of room air gas. The exit port may instead have a filter with one-way valve to trap the exhaled aerosol particles while allowing the exhaled gases to escape. The filter valve will similarly close during inhalation to prevent entrainment of room air gas. The holding chamber will allow a uniform mixture of aerosol medication and gases to flow together during inhalation to the patient via a mouthpiece or a facemask. The holding chamber is connected to a nebulizer chamber with a single or multiple connecting tubes that allow gas mixtures with varying density, viscosity, humidity and concentration of oxygen to flow into the holding chamber from the nebulizer chamber. The pattern of flow of the gas(es) does not disturb the flow of the nebulized medication from the nebulizer chamber to the holding chamber or interfere with the plume generated by an MDI. The device also serves as a facemask for delivering precise concentrations of oxygen or as a 100% non-rebreather mask. The device also serves to deliver precise concentrations of different density gases i.e. nitrogen, helium, oxygen, etc. This will allow varying fractions of inspired oxygen to deliver aerosol medication via MDI or a nebulizer. Thus, the device has the ability to deliver aerosol medication with an MDI or a nebulizer while retaining the ability to simultaneously deliver different density gas mixtures and varying fraction of inspired oxygen without interrupting one for the other.

A DEMWAX™ water treatment system includes membrane modules and a collection channel. The membrane modules are submerged at depth and tethered to one or more anchors on the ocean floor. A breathing tube extends between the collection channel and a buoy floating on the surface of the ocean to expose the collection channel to atmospheric pressure. A pump pumps the permeate from the collection channel to shore through a permeate pipe. One or more permeate storage tanks can optionally be disposed within the system, for example, as part of or extending from the collection channel, to provide extra storage.

A method of improving weld quality between aluminum members by slowing the rate of solidification of a molten weld trough into solidified material. Upper and lower aluminum members are positioned together in contact between facing surfaces thereof to expose a first outer surface of the upper aluminum member to laser irradiation. A welding laser beam is moved in a path over the first outer surface, wherein the welding laser beam has an energy and width to progressively melt a trough of molten metal to a depth through the upper aluminum member and into the lower aluminum member. The molten metal in the trough has a void filled with gas, and the molten metal re-solidifies into re-solidified metal after the passage of the welding laser beam. An area in and around the trough is heated to slow the rate of solidification of the molten metal into the re-solidified metal, thereby preventing entrainment of the gas within the re-solidified metal.

A medical patient transfer handcart is composed of a main body with lift mechanism and universal castors, and a transversely movable plate mechanism with dual-layer structure consisting of cloth reel and its frame end jointer holder, clutch gear, and upper and lower movable clothes (or plates).

In processing the surface of a substrate 2 that is held with its under-surface in contact with a substrate holder 3 in a vacuum chamber 1, the temperature of substrate 2 is controlled by supplying a heat-conductive gas between the substrate 2 and substrate holder 3. Supply and evacuation of the heat-conductive gas are effected rapidly at high flow rate from both supply line 18 and evacuation line 19 using bypass lines 17a, 17b, while pressure regulation is effected with a low flow rate.

An endoscopic device for autonomous locomotion through a body cavity with a predetermined direction, the device comprising a tubular body constructed of a relatively elastic material that extends between two, preferably, the front and rear, end portions, respectively. The tubular body includes an anchor for temporarily and alternately attaching the end portions to a wall portion of the body cavity in synch with corresponding axial extensions and contractions of the tubular body. The tubular body incorporates a reinforcement structure distributed along its length that is substantially rigid in a radial direction and yields in an axial direction, the structure specifically comprising either a plurality of relatively rigid rings or at least one helical spring.

A planar capillary core evaporator with fin for CPL consists of base , top cover being fixed and sealed with base , isolation plate for isolation top cover to be liquid collection cavity and steam collection cavity , liquid collection cavity formed by horizontal and longitudinal grooves cross arranged and opened with liquid return inlet on it , steam collection cavity opened with vapor outlet on it , fin set on outer surface of top cover ,longitudinal steam channel connected to steam cavity on base and capillary core set between liquid collection cavity and steam channel .

The invention relates to field of atmosphere pollution control and treatment, especially relates to a process of multiple circulate and stable flue gas desulfurization by means of double aluminium subsulfate. It is characterized in that it comprises: desulfurizing absorption liquid internal cycle, external cycle, internal cycle of desulfurizing slag, internal cycle of desulfurizing agent, and external cycle of desulfurizing salg. The invention also relates to the device for said process. THe invention is characateized by stable process, low investment, high desulfurizing rate and low operating cost.

A scooter powered by a hydrogen powered internal combustion engine fueled by a throttled stream of air into which a controlled amount of hydrogen is injected. A hydrogen fuel control system is used to control the amount of hydrogen injected into the throttled air stream using multiple parameters. The amount of hydrogen present in the hydrogen storage unit is monitored using an on-board hydrogen fuel measurement system utilizing a microcontroller and multiple sensors.

The invention discloses a frostless air source heat pump device and method based on membrane method dehumidification and indoor regeneration humidification. The frostless air source heat pump device comprises a refrigerant circulation loop and a solution dehumidification/humidification circulation loop. The refrigerant circulation loop comprises a compressor (1), a four-way reversing valve (2), an indoor heat exchanger (3), a regeneration condenser (4), a throttling valve (5) and an outdoor heat exchanger (6) which are sequentially connected together in series through a first communication pipeline. The solution dehumidification/humidification circulation loop comprises a heat recovery heat exchanger (10), a regeneration condenser (4), an indoor humidification membrane assembly (11), a heat recovery heat exchanger (10), an outdoor dehumidification membrane assembly (7) and a dehumidification solution storage tank (8). According to the frostless air source heat pump device and method based on membrane method dehumidification and indoor regeneration humidification, outdoor air latent heat is converted into sensible heat through the dehumidification membrane assembly, frosting is avoided, and moisture introduced through a dehumidification solution is regenerated and used for indoor humidification.

Disclosed is a refining technique of base oil regenerated from used lubrication oil, and the refining technique comprises the following steps of 1, removing solid waste, which includes removing solid waste from used lubrication oil by centrifugation; 2, solvent pretreatment, which includes extracting mixed impurities and moisture through a solvent and obtaining raw oil after removing upper oil; 3, flocculation treatment, which includes turning mixtures obtained from step 2 into a mixture of flocculation; 4, atomospheric distillation; 5, carrying out reduced pressure distillation; 6, carrying out rectification; 7, solvent refining: putting oil produced from a rectifying column into a treatment tank and when the height of the oil level in the treatment tank reaches 65%-75% of the height of the treatment tank, adding by mass 10%-40% of 1-Methyl-2-pyrrolidinone, and carrying out solvent refining. The refining technique of base oil regenerated from used lubrication oil has the advantages of low investment and high yield efficiency, meanwhile, the refining technique accords with the requirement of environmental protection, reduces vacuum residuum by 15%, improves product yield, facilitates the overhauling of equipment, prolongs the production period, largely improves production efficiency and appearance quality of minus line oil, and helps to obtain high quality regenerated base oil.

A suction device for a pick power tool includes a securing device provided at the first axial end of the suction device for securing the suction device (11) on the pick power tool (6), a connection element(17) for a vacuum source inclined to the longitudinal axis (14) of the suction device (11), and a first baffle wall (21) and at least one further baffle wall (26) spaced from the first baffle wall (21), with the first baffle wall being located between the connection element (17) and the first end (12) of the suction device (11) and the at least one further baffle wall (21) being located between the first baffle wall and the first end (12), and the first baffle wall (21) and the second baffle wall (26) each having, respectively, a through-opening (22, 27) for the working tool (7) of the pick power tool (6).

The invention discloses a bidirectional flow ventilation and air pressure composting method, which comprises the following steps: dwelling pile body with height at 2-2. 5m and upper margin at 0. 5-1. 0m in box compost reactor; inserting three heat indicators and three pile body gap gas sampling pipe into different height; adopting 0. 1-0. 2m3/min fixing air quantity per m3 initial compost raw material and batch process; venting; changing the direction of ventilation when the biggest differential temperature more than 5 deg. c of the three heat indicators; turning over the pile at the second day for one time one day; compressing the air with impulse; discharging momentary; making the pile body float and drop; testing oxygen concentration of the gas in the pile body per 15 min; finishing the compost when the biggest differential value less than 1. 0% of adjacent twice. This invention possesses low operating cost without twice pollution, which can be used to the compost of life garbage, agricultural waste and sludge of the waste water treatment plant.

A weight selecting apparatus capable of automatically performing calibration, and providing a weight selecting apparatus capable of certainly carrying objects to be inspected with a relatively simple mechanism and performing weight measurement of the objects. The objects, after being subjected to weight measurement by a first weighing unit 2, are sampled by a sampler 5, and those of the objects thus sampled are subjected to weight measurement by a second weighing unit 6. A calibration unit compares, for the same object, the measured result with that obtained by the first weighing unit 2 and discriminates whether or not a difference therebetween is within a specific error range, to perform calibration of the first weighing unit 2. Further, as a carrier 3 for carrying the objects to the weighing unit 2 one by one uses an intermittently rotatable carrying roller 32 having in its outer peripheral surface portion a plurality of carrying pockets 321.

The invention discloses a ceramic casting system in the technical field of casting. A sprue, a cross gate and an ingate of the ceramic casting system are obtained by connection of several equal-diameter straight pipes, a fourway pipe, elbow pipes, variable-diameter straight pipes, t-branch pipes and flat mouth pipes made of a ceramic material. The sprue and the inlet section of the cross gate are obtained by connection of the equal-diameter straight pipes. The upward opening of the fourway pipe is connected to a lower end of the sprue. Two side openings of the fourway pipe are connected to one end of the inlet section of the cross gate. The elbow pipes are connected between the inlet section and an outlet section of the cross gate. The outlet section of the cross gate is obtained by connection of the equal-diameter straight pipes and the t-branch pipes. The equal-diameter straight pipes are connected to straight-through openings of the t-branch pipes. The ingate is obtained by connection of the variable-diameter straight pipes and the flat mouth pipes. Large-diameter ends of the variable-diameter straight pipes are connected to side openings of the t-branch pipes and each one of small-diameter ends of the variable-diameter straight pipes is connected to an end of the corresponding flat mouth pipe. Sides of the flat mouth pipes are provided with rectangular outlets communicated with a casting cavity. The ceramic casting system solves the problem of sand washing of the existing casting system in large-scale part casting, improves casting quality and is suitable for large-scale part casting.

The invention discloses a manufacturing device of an ultra-large type special thick plate rectangular ingotblank. The manufacturing device of the ingotblank comprises a water-cooling metal mould chassis on which a water-cooling metal mould is arranged; the top of the water-cooling metal mould is provided with a heat insulation and heat preservation dead head; the interior of the water-cooling metal mould is a taperless rectangular hollow cavity which is through up and down; and the hollow cavity of the water-cooling metal mould is internally through and is provided with a width delivery device. By adopting a taperless water-cooling metal mould structure based on a traditional roller manufacturing technology, the invention can eliminate the taper of a casting, lower the higher requirement for the opening degree of a rolling mill, reduce the impact of the taper to the rolling of the rolling mill at the initial stage and ensure that the produced ingotblank more approaches to a finished plate in shape. The manufacturing device is provided with the width delivery device by combining the characteristics of the ultra-large type rectangular ingotblank, thereby ensuring that the filling of liquid steel and the formed temperature field are more uniform, avoiding the occurrence of cracks and trapped gas conditions, being beneficial to the upward flotation of impurities, and improving the quality of the ingotblank. The width delivery device has simple structure and convenient use.

The disclosed system comprises an apparatus and a method continuously removing air from a mixture of ground polyurethane particles and a polyol liquid. The apparatus for continuously removing air from a mixture of ground polyurethane particles and a polyol liquid comprises a deaerator having an inlet to receive a mixture of liquid and fine particles and an outlet to disperse the mixture. The deaerator further comprises a rotating bowl, wherein the bowl is attached to a shaft such that the bowl and the shaft rotate. The bowl has an inside and an outside surface that is coupled to the inlet of the deaerator to receive the mixture such that when the bowl is rotated, the mixture is spread on the inside surface of the bowl. A pickup tube is located in the bowl that catches the mixture and directs it through a conduit to the outlet. The rotation of the bowl imparts sufficient energy to the mixture to pump it through the conduit. A vacuum chamber that has a front plate and a back plate encompasses the bowl and the back plate contains an assembly by which the shaft rotates and the low absolute pressure within the vacuum chamber prevents bubbles from being re-entrained in the mixture as it is directed toward the outlet via the conduit.

An application of the membrane module with compact polymer membrane in gas-liquid separation is disclosed. Its working process includes such steps as diffusing the gas via micropores of membrane to the compact active layer, dissolving-diffusing to make it reach the interface of polymer membrane and absorbing liquid, reacting on absorbing liquid to generate transfer mass, and carrying gas away by the absorbing liquid.