38results about How to "High pumping pressure" patented technology

A method for synthesising mesoporous silica microparticles comprising the steps of: —preparing a sol from an ammonium catalysed hydrolysis and condensation reaction of a pre-sol solution comprising a silica precursor and a structure directing agent dissolved in a mixed solvent system comprising an alcohol and water to produce mesoporous particles of silica with an average diameter of up to about 50 μm; hydrothermally treating the particles to increase the pore size; treating the particles to remove residual structure directing agent; and further increasing the pore size using controlled dissolution.

The invention provides a coal mine paste-like filling material using construction waste. The material comprises the following raw materials: a coarse aggregate containing 450-500Kg of construction waste and 400-450Kg of gangue; a fine aggregate containing 350-400Kg of fly ash and 200-250Kg of a binder; an admixture containing 6.0-12.5Kg of an accelerator and 2.0-7.5Kg of a water reducer; and 550-630Kg of mine water. According to the invention, construction waste, gangue and other wastes are used to prepare the paste-like filling material with good pumpability, low bleeding rate and degree of stratification, short setting time, high strength and stability, and low cost. The invention also provides a preparation and filling method of the coal mine paste-like filling material using construction waste.

A peristaltic pump has an arcuate raceway with a partially concave inner surface extending through an arc of at least one hundred eighty degrees (180°). The arc defines a midpoint, and a rotor faces the inner surface of the raceway and is both rotatable relative to the raceway and translationally movable relative to the raceway between a pump position, wherein the rotor is spaced from the midpoint a first distance, and a tube load position, wherein the rotor is spaced from the midpoint a second distance greater than the first distance. A motor is coupled to the rotor to rotate the rotor plural are rollers arranged on the rotor to contact tubing disposed between the rotor and the raceway when the rotor is in the pump position. The motor is prevented from stopping at a predetermined angular position to facilitate loading and unloading tubing.

Gear pumps and methods of using the gear pumps are provided. In general embodiments, the pumps comprise a gear housing defining a passage and having an inlet and an outlet and one or more gears contained within the gear housing. The gears can comprise corresponding bearings that are movably engaged with the gear. The bearings are separated from the passage of the gear housing by one or more seals. The bearings can be contained within a bearing housing attached to the gear housing.

A method of effecting a stabilization and effecting a lifting of a portion of a footing of a building which includes the steps of effecting an introduction of water resistant plastics into soil and openings in the soil in the vicinity of the footing to seal these areas, then introducing a slow setting plastics catalysed monomer to beneath the footing at a very high pressure.

A method of effecting a stabilization and effecting a lifting of a portion of a footing of a building which includes the steps of effecting an introduction of water resistant plastics into soil and openings in the soil in the vicinity of the footing to seal these areas, then introducing a slow setting plastics catalysed monomer to beneath the footing at a very high pressure.

Methods and systems are provided for a direct injection fuel pump. The methods and system control pressure within a compression chamber so as to improve fuel pump lubrication.

A hydraulic control device of construction machine is provided with a control valve lying between a hydraulic pump and a hydraulic actuator for opening and closing a meter-in control flow path, and a flow rate control valve lying between a pump discharge line on the upstream side of the above control valve and a tank. The above flow rate control valve receives a pump pressure and a load sensing pressure corresponding to a pressure on the downstream side of the meter-in control flow path as a pilot pressure, and is activated for opening and closing so as to maintain a constant differential pressure therebetween. The above flow rate control valve is maintained in a closed state by a pilot pressure switching valve when the load sensing pressure is low. The above control valve opens a bypass line when the meter-in control flow path is closed.

A multistage sealed pump is provided for use in an X-ray tube cooling system which is substantially more efficient than pumps of known construction and which provides substantially higher pumping pressure at lower motor current than conventionally. Cooling liquid can be transferred from stage to stage by interconnecting tubing external of the housing or within the housing, through a hollow motor shaft, or through the motor casing. In another embodiment, the multiple impellers can be directly mounted on a shaft extending from a single end of the motor.

To improve the configuration of electrodes disposed in the fluid channel of EHD pumps, and to reduce of the fluid channel of EHD pumps, as well as to reduce the cost of producing EHD pumps, and to increase the pumping pressure of EHD pumps. A hollow conical metal electrode open at the top end and the bottom end is used facing a rod-shaped metal electrode, and an electrically insulated fluid outflow channel is formed facing the hollow conical metal electrode, with the hollow conical metal electrode and rod-shaped metal electrode sharing a central axis, so that the two electrodes are disposed coaxially, and the rod-shaped metal electrode is disposed from the inner portion of the hollow conical metal electrode to the inner portion of the fluid outflow channel, and a portion of the rod-shaped metal electrode, positioned at the interface of at least the inner portion of the hollow conical metal electrode and the fluid outflow channel, serves as an exposed metal part, with this exposed metal part being caused to face the inner surface of the hollow conical metal electrode, and when an electric field is applied across the hollow conical metal electrode and the rod-shaped metal electrode, there is introduced a fluid wherein are formed dissociated ions, and high voltage direct current is applied across the hollow conical metal electrode and the rod-shaped metal electrode.

The invention provides a coal mine paste-like filling material using construction waste. The material comprises the following raw materials: a coarse aggregate containing 450-500Kg of construction waste and 400-450Kg of gangue; a fine aggregate containing 350-400Kg of fly ash and 200-250Kg of a binder; an admixture containing 6.0-12.5Kg of an accelerator and 2.0-7.5Kg of a water reducer; and 550-630Kg of mine water. According to the invention, construction waste, gangue and other wastes are used to prepare the paste-like filling material with good pumpability, low bleeding rate and degree of stratification, short setting time, high strength and stability, and low cost. The invention also provides a preparation and filling method of the coal mine paste-like filling material using construction waste.

The invention discloses an oil-free vortex air pump. The oil-free vortex air pump comprises an outer shell, a motor, a bearing piece connected with the rotating end of the motor, and a compression assembly connected with the bearing piece and arranged in the outer shell, wherein the compression assembly comprises a movable vortex disc connected with the bearing piece, a first vortex disc and a second vortex disc which are arranged on two side surfaces of the movable vortex disc respectively, a first cooling cavity formed in the side surface of the first vortex disc and a second cooling cavityformed in the side surface of the second vortex disc; and the first vortex disc is arranged on the side relatively close to the motor, a first cooler is arranged between the first cooling cavity and the motor, and a second cooler is arranged on the side, relatively away from the motor, of the second cooling cavity. The device is large in air displacement, high in inflation pressure, low in noise,long in service life, free of maintenance, variable in air suction and exhaust positions and suitable for suspension systems of various vehicle types.

Provided is an automatic film washout device includes a housing defining a rinsing chamber and a drain in fluid communication with the rinsing chamber. A drum is rotatably coupled to the housing and is configured to be engageable with the photosensitive material for washout thereof. A booster pump is operatively coupled to the housing and includes a pump inlet and a pump outlet, the pump inlet being fluidly connectable to the pressurized fluid source to receive fluid therefrom at an inlet pressure, the pump being configured to elevate the pressure of the fluid exiting the pump via the pump outlet. A plurality of nozzles are coupled to the housing and in fluid communication with the pump to receive fluid therefrom. The plurality of nozzles are configured to direct fluid into the rinsing chamber for washout of the photosensitive material.

A dehumidifier has a water receiving tray receiving condensed water of the dehumidifier. The water receiving tray comprises a water tank outlet, a main water outlet arranged outside the casing of the dehumidifier as a whole, the main water outlet being arranged opposite the water tank outlet; a pump used for draining is provided on the bottom of the outside of the water receiving tray, the pump being directly connected with the water receiving tray, eliminating the need of providing a pipe to connect with the dehumidifier pump, therefore reducing the risk of leaking. By connecting the pump with the water receiving tray directly, the pressure loss due to the connection of pipe is eliminated; the drainage capacity of the pump is utilized fully. Without installing or detaching additional pipes during installment or maintenance, operation is easier.

Provided is a carriage spool valve comprising: a main valve body (11) with a charging hole being provided therein; an auxiliary valve body (2) which is directly or indirectly coupled with the main valve body (11); a driving device (1) having a power output end; a dragged body (8) which is located between the main valve body (11) and the auxiliary valve body (2), a mounting hole being provided in the dragged body (8); a valve plate (9) which is mounted in the mounting hole of the dragged body (8) in an axially movable manner and blocks the mounting hole; and a through-hole body (6) which is mounted in the dragged body (8) and / or in a mounting hole of the main valve body (11) in an axially movable manner. A through-hole and an elastomer (7) are provided on the through-hole body (6), the elastomer being mounted in the mounting hole of the main valve body (11) and / or in the charging hole of the main valve body (11). The dragged body (8) is directly or indirectly connected to the power output end of the driving device (1) and can be driven by the driving device (1) to perform a reciprocating motion so as to open or close the charging hole in the main valve body (11). In addition, a delivery pump having the carriage spool valve is also disclosed.