32results about How to "Maintain pressure balance" patented technology

A continuous Liquid-Solids Circulating Fluidized Bed (LSCFB) preferably for use as an ion exchanger consists of two fluidized bed columns, a fluidized bed adsorber (downer) operating in conventional fluidized bed mode for adsorption of ions of interest and a fluidized bed riser for desorption of ions (operating as a riser fluidized bed) to provide regenerated particles. Ion exchange particles circulate continuously between the riser and the downer i.e. the particles that have adsorbed ions in the absorber pass from the adsorber (downer) to the desorber where they are regenerated and the so regenerated particles are return to the adsorber near the top of the adsorber column. The LSCFB can be used in processes for continuous recovery of the ions of interest.

A ventilation system for use with a cooking appliance to maintain an atmospheric pressure balance existing within an enclosed space surrounding the cooking appliance. A hood establishes a three-dimensional and interiorly recessed configuration and which is supported above the appliance. A filter within the hood communicates with a vacuum driven exhaust extending from the enclosed space. A supply plenum secures in downwardly and opposing fashion relative to a side of the cooking appliance. An air intake communicates the supply plenum with an exterior environment, the plenum including a perforated plate mounted to an inside face thereof in proximity to a bottom closed edge of said plenum and in order to introduce intake air to a side location of the appliance in order to equalize internal pressure and to facilitate upward movement of heated air from the appliance.

A tensioning apparatus for applying a substantially constant tension to a workover riser (12) includes a first portion (40) adapted to be coupled to a workover riser, a second portion (44) adapted to be coupled to a marine riser (14) and tensioning means (46) for providing relative movement between the first portion and the second portion to, in use, tension, the workover riser.

Provided is a semiconductor device including: a multilayer substrate including an optical element; a light-transmitting plate provided on the substrate to cover the optical element; and a lens of an inorganic material provided between the substrate and the light-transmitting plate. A structure having a same strength as a strength per unit area of the lens is provided at a portion outside an effective photosensitive region where the optical element is formed, when the substrate is viewed in plan.

The inkjet apparatus for double-side recording, comprises: liquid ejection heads which are disposed on either side of a recording medium and face each other across the recording medium, the liquid ejection heads ejecting liquid onto recording surfaces of the recording medium; conveyance devices which hold the recording medium in such a manner that a normal of each of the recording surfaces is substantially horizontal, and convey the recording medium in a horizontal direction in such a manner that the recording surfaces face ejection surfaces of the liquid ejection heads; and end supporting devices which support an upper end and a lower end of the recording medium, as the conveyance devices convey the recording medium in a horizontal direction while holding the recording medium in such a manner that the normal of each of the recording surfaces is substantially horizontal.

A ventilation system for use with a cooking appliance to maintain an atmospheric pressure balance existing within an enclosed space surrounding the cooking appliance. A hood establishes a three-dimensional and interiorly recessed configuration and which is supported above the appliance. A filter within the hood communicates with a vacuum driven exhaust extending from the enclosed space. A supply plenum secures in downwardly and opposing fashion relative to a side of the cooking appliance. An air intake communicates the supply plenum with an exterior environment, the plenum including at least one air flow restricting and redistributing baffle plate and terminating in an upwardly angled outlet for introducing intake air along the side of the appliance, resulting in heating and elevating the intake air within a perimeter defined by the hood and thereby minimizing loss of conditioned air existing within the enclosed space.

A hydrostatic drive system for a machine is provided. The hydrostatic drive system includes a first hydraulic circuit, and a second hydraulic circuit. The first hydraulic circuit includes a first pump and a first hydraulic motor configured to selectively receive a flow of pressurized hydraulic fluid from the first pump at a first pressure. The second hydraulic circuit includes a second pump and a second hydraulic motor configured to selectively receive the flow of the pressurized hydraulic fluid from the second pump at a second pressure. The hydrostatic drive system further includes a controller configured to maintain a pressure balance between the first and the second hydraulic circuits based on a difference between the first pressure and the second pressure.

A ventilation system for use with a cooking appliance to maintain an atmospheric pressure balance existing within an enclosed space surrounding the cooking appliance. A hood establishes a three-dimensional and interiorly recessed configuration and which is supported above the appliance. A filter within the hood communicates with a vacuum driven exhaust extending from the enclosed space. A supply plenum secures in downwardly and opposing fashion relative to a side of the cooking appliance. An air intake communicates the supply plenum with an exterior environment, the plenum terminating in an upwardly angled outlet for introducing intake air along the side of the appliance, resulting in heating and elevating the intake air within a perimeter defined by the hood and thereby minimizing loss of conditioned air existing within the enclosed space.

The invention discloses a liquid eyeliner discharge structure. The liquid eyeliner discharge structure comprises a bottle body, a bottle cover, a brush sleeve seat, a diversion seat, a water leading core and bristles, wherein the bristles are arranged at one end of the water leading core; the diversion seat is arranged on the periphery of the water leading core, and the bristles are exposed at one end of the diversion seat; a plurality of material storage holes are formed on the diversion seat; the brush sleeve seat is fixedly arranged on the periphery of the diversion seat; and the bottle cover is detachably arranged outside one end of the brush sleeve seat, and the bottle body is detachably arranged outside the other end of the brush sleeve seat. The discharge structure is simple, can uniformly conduct materials onto the bristles, and is very convenient to use.

Ventilation system (10) comprising resistive heating means (12) for heating gas flowing through the ventilation system (10) and means that are arranged to provide a 5 controlled, continuously variable AC voltage/current to at least part of the resistive heating means (12) of the ventilation system (10) to modulate the power (24) being supplied thereto and to enable continuous regulation of the temperature of gas flowing through the ventilation system (10).

The invention relates to a method for welding a plate by laser deep penetration fusion based on a prefabricated flow channel. The method comprises the following steps: step 1, providing a first workpiece and a second workpiece to be butted; step 2, accurately butting the first workpiece and the second workpiece; step 3, providing a welding workbench, and placing a copper plate on the surface of the welding workbench; step 4, accurately butting the first workpiece and the second workpiece by using a welding clamp and clamping and fixing on the copper plate; step 5, providing an air suction device; step 6, providing a laser welding system; step 7, starting the laser welding system, and enabling a laser beam formed by focusing of a laser welding head to vertically irradiate the surface of theworkpieces; step 8, starting the air suction device; and step 9, after ending laser welding, closing a laser generator and the air suction device, and completing a welding process. The method is capable of, through the prefabricated special flow channel, enabling an internal pressure of a laser deep penetration fusion welding small hole to be balanced and enabling a weld crater to be downwards flowed, and effectively avoiding formation of weld spatter and a weld joint of a nail head.

An expansion member for a rotary expansion tool comprises a spindle adapted to be supported at both ends, and a roller mounted concentrically on the spindle. A sealed lubrication system is contained within the spindle for supplying lubricant to a bearing or bearing surface at an interface between the spindle and the roller.

Disclosed is a precast brick clamping type lifting device. A first clamping frame is fixedly installed on a lifting mechanism of a forklift and connected with a second clamping frame through a hydraulic telescopic mechanism. The first clamping frame and the second clamping frame are each fixedly provided with a plurality of antiskid pieces. According to the precast brick clamping type lifting device, a lifting mechanism of a forklift in the prior art is effectively used, a hydraulic clamping mechanism is installed on the forklift, so that bricks are clamped from the two sides of the stacked precast bricks, and the precast bricks are effectively conveyed, lifted and loaded and are free of damage.

The invention relates to a sampling unit for the concentrates preparation device. The unit comprises a base body, a movable rod, a limiting pin, a sampling chamber, a sampling bore, an axle sleeve and an isobaric chamber. The sampling chamber passes through the upper and lower surfaces of the base body, the isobaric chamber is a cylindrical blind bore, the isobaric chamber passes through the front surface of the base body and passes through the front and back surfaces of the sampling chamber. The axle sleeve has an interference fitting with the isobaric chamber, the movable rod hermetically slidingly mates with the axle sleeve, the head and tail ends of the gas permeable passage respectively communicate with the isobaric chamber and the outside. Concentrates can be taken out through the sampling bore of the sampling unit, the movable rod can take samples freely with the help of gas permeable passage for keeping the pressure balance of ends of the movable rod.

The invention discloses a method for producing liquid fuel by using biomass, and relates to the technical field of clean energy production, the method for producing liquid fuel by using biomass comprises the following steps: step 1, biomass raw material pretreatment, step 2, microbial fermentation, step 3, separation and purification, and step 4, purification. Biomass raw material residues, a microbial fermentation agent, liquid fuel, water, other incombustible micromolecular organic matter liquid and the like are fully fermented in a reaction kettle, and solid impurities and the liquid are separated through simple physical filtering operation; liquid fuel, water and non-combustible organic liquid are still contained in liquid obtained after solid-liquid separation, and then the liquid fuel, the water and the non-combustible organic liquid are separated through comprehensive utilization of physical and chemical separation and purification methods, so that the purity of the liquid fuel is improved, and the problem that the combustion process is insufficient due to the fact that the liquid fuel contains many impurities is solved.

The invention relates to a device for eliminating the recoil of various firearms, comprising an air inlet and a front air cylinder respectively arranged at two sides of a gun barrel bottom, wherein an interior cavity of the front air cylinder is a sealed air chamber communicated with a gun barrel cavity through the air inlet, a bullet bottom is inserted at the neck of a cartridge case, a lower end of the bullet is provided with a ring gear tooth with a height which is two thirds of an insertion part of the bullet lower part, and the height of the upper part of the gear tooth cartridge inserted in the cartridge case is one third, and the sum of bottom area of sealed air chambers at two sides of the gun barrel bottom is less by 5% of corresponding cartridge case bottom area. The invention eliminates the recoil generated by launch through the recoil force generated by gunpowder gas in the two front air cylinders.