49results about How to "Ensure pressure" patented technology

The invention relates to a cover panel for an aircraft, comprising a decompression opening that can be closed by a decompression flap that comprises a membrane, and a ventilation opening that is provided separately in the cover panel and that is permanently open. Furthermore, the invention relates to an aircraft fuselage comprising such a cover panel.

An aircraft refuelling system of an aircraft is provided. The refuelling system comprises a refuelling connector (34) mounted as part of the aircraft and configured to detachably connect to the fuel outlet (2) of a fuel supply apparatus separate from the aircraft, and a fuel pressure regulator (36) having an inlet in communication with a fuel inlet (35) of the refuelling connector (34) and having an outlet in communication with refuelling pipework (39) of the aircraft. The fuel pressure regulator (36), regulates the pressure of fuel in the refuelling pipework (39) when fuel is being passed into the refuelling pipework (39) from the fuel inlet (35) of the refuelling connector. A fuel pressure regulator apparatus for mounting in an aircraft, comprising a connector forming a fuel inlet to the fuel pressure regulator apparatus, configured to detachably connect to the fuel outlet of a fuel supply system, a fuel outlet for connection to the refuelling pipework of an aircraft and a fuel pressure regulator for regulating the pressure of fuel passing through the fuel outlet is also provided.

A rotary assembly comprising a transmission member and an oil distribution system enabling oil to be supplied to the transmission member in order to lubricate it. According to the invention, the oil distribution system comprises at least one oil transfer chamber provided with at least one feed orifice configured to receive oil from outside the rotary assembly; the transmission member includes at least one rotary portion provided with at least one oil reception chamber; at least one link duct provides fluid flow connection between the oil transfer chamber and the oil reception chamber; the oil distribution system is driven by said rotary portion of the transmission member to rotate together with it; and the rotary assembly is configured in such a manner as to accommodate a given amount of axial and/or radial relative movement between said rotary portion of the transmission member and the oil distribution system.

A dispensing head for a tube with a housing having a receiving chamber an outlet fitting of the tube an outlet opening, and an interior space surrounded by walls of the housing. An annular wall section of the housing separates the receiving chamber from an annular area of the interior space of the housing, an outlet valve is provided in the interior space, the outlet valve having a valve body, a valve seat and a pressure chamber designed so that the valve body and the valve seat are movable from a closed position to an open position by pressurization of the medium contained in the pressure chamber in order to allow discharge of the medium through the discharge opening. A medium path is provided within the housing, which connects an inlet opening to the pressure chamber.

The invention belongs to the field of multi-layer hollow structural member current auxiliary technology, and particularly relates to a current auxiliary forming method of a metal plate hollow structural member. According to the current auxiliary forming method of the metal plate hollow structural member, the method comprises the steps that current auxiliary thermal bending is carried out on a coreplate, namely a metal plate is applied with currents to be heated and is applied with pressure to be bent, and after power-off and cooling, the core plate is obtained; and current auxiliary diffusionconnection is carried out and specifically comprises the following steps that the surfaces of the core plate, an upper plate and a lower plate are cleaned, the core plate, the upper plate and the lower plate are assembled, a support cushion block is placed in the hollow position, pre-pressing is carried out, the current is applied to heat the diffusion connection, cooling is carried out, and thenthe metal plate hollow structural member is obtained. By adopting the current auxiliary technology, multi-layer structures of metal material can be efficiently and quickly connected, and meanwhile, the requirements of high connection strength and high use performance can be met.

The invention relates to an apparatus for extruding thermoplastic material, comprising an extruder screw (2) which is mounted in a housing (1), comprises a plasticizing section (P) on the inlet side, a degasification section (E) upstream of an outlet section (A), a flow arrester (S) between the plasticizing section (P) and the degasification section (E) with a screw section with a counter-rotating delivery flight (3), and at least one flow channel (5) bridging the flow arrester (S) and containing a melt filter (4). In order to reduce the driving power of the extruder screw (2) it is proposed that a sleeve (7), which encompasses the screw (6) and is mounted in the housing (1) in a rotationally fixed manner, is associated with the screw section that forms the flow arrester (S), and the screw (6) in the screw section of the flow arrester (S) has a smaller screw diameter in relation to the plasticizing section (P) and preferably also to the degasification section (E).

The invention relates to a special hydraulic machine for a horizontal fan pressure shaft. The special hydraulic machine comprises a horizontal stand, wherein the stand consists of a base and brackets arranged on two sides of the base. The special hydraulic machine is characterized in that a press driving mechanism capable of moving along the horizontal direction is arranged on the bracket on one side of the base; the front end of the press driving mechanism is connected with a pressing plate; a fan bracket is arranged at the bottom of the stand; and an upper end surface of the fan bracket is of a V-shaped groove structure. When the special hydraulic machine is in use, a fan casing is arranged on the fan bracket and the pressing plate is pushed by the press driving mechanism to move forwards to press the fan shaft into the center of the casing. A horizontal length adjusting mechanism is arranged between the press driving mechanism and the pressing plate and can adapt to casings with different thicknesses and ensure a proper pressing force. A guiding support mechanism is arranged on the horizontal length adjusting mechanism, and thus the horizontal forward movement of the pressing plate is ensured, the stress direction is accurate and the bias press is avoided.

A circulating cooling/heating device configured to cool and heat a circulating fluid supplied to a chamber in plasma-etching equipment includes: a heat exchanger configured to perform heat exchange between the circulating fluid and a cooling water; a heater configured to heat the circulating fluid; a pump configured to circulate the circulating fluid between the circulating cooling/heating device and the chamber; a cooling water circulation block through which the cooling water passes; and a pressure sensor serving as a pressure detecting unit configured to detect a pressure of the cooled or heated circulating fluid, the pressure sensor being attached to the cooling water circulation block.

The invention discloses a highly-integrated mechanically-opened type bottle opening valve. The highly-integrated mechanically-opened type bottle opening valve comprises a gas bottle connector, a temperature safety valve, a ball valve, an inflation valve, a pressure safety valve and a pressure reduction valve. The gas bottle connector communicates with a gas bottle, a tee-joint structure is formedby the inflation valve, the pressure reduction valve and the gas bottle connector, and the ball valve is located in a common gas channel of the tee-joint structure. The highly-integrated mechanically-opened type bottle opening valve is provided, the pressure reduction valve, a two-position three-way switch, the inflation valve, the pressure safety valve and the temperature safety valve are combined and integrated, and the characters of high integrity and a small and exquisite structure are achieved. A suspension self-adjustment ball valve structure is adopted, a mechanical opening device is combined, the bottle opening valve is simply and reliably opened, and the low leakage rate is guaranteed.

The invention relates to a high-efficiency control system of a disc water filter and a control method. A water inlet end of the disc filter is connected with a three-way valve; an outlet end of the disc filter is connected with a pneumatic cutoff valve; an electromagnetic valve I and an electromagnetic valve II are arranged on the three-way valve and the pneumatic cutoff valve respectively and connected to a PLC (programmable logic controller); the disc filter and the three-way valve are connected with a forward filtration pipeline and a reverse cleaning pipeline; the PLC circularly controls opening and closing of the electromagnetic valves to further switch opening and closing of the three-way valve and the pneumatic cutoff valve for forward water filtration and reverse disc filter cleaning; the defect of power pipeline blocking caused by dirt in water is overcome; a control mode is simplified; backwash water pressure is increased; the backwash time is adjusted flexibly; a fault rateis decreased; the maintenance time is shortened; a running rate of equipment is increased; and normal production is ensured.

A hot air circulating electric oven for making shoes is composed of door, case body with left, right and top air channels, temp controller, electrothermal tubes arranged in left and right air channels, the motor and fan arranged in top air channel, a drying chamber, and a feeding carrier in said drying chamber. Its advantages are less energy consumption and high drying quality.

The invention provides a fabric decontamination device and an operating method thereof. The fabric decontamination device comprises a single-arm support, wherein a single-arm body is hinged to the top of the single-arm support; a pressurizing assembly is arranged at the front end of the single-arm body; a movable wiping assembly is arranged under the pressurizing assembly; the pressurizing assembly comprises a lifting sliding cylinder; a mounting straight slot is formed in the front end of the single-arm body along the vertical direction; a vertical sliding sleeve is hinged in the mounting straight slot; the width of the mounting straight slot is larger than the diameter of the vertical sliding sleeve; the lifting sliding cylinder penetrates into the vertical sliding sleeve to form sliding connection; the upper end of the lifting sliding cylinder is a closed end; the closed end is connected with a weight; a cylinder opening is formed in the lower end of the lifting sliding cylinder; the lifting sliding cylinder penetrates into a pressure plate shaft; a compression spring is arranged between the lifting sliding cylinder and the pressure plate shaft; the top of the compression spring pops up the inner wall of the closed end; the bottom end of the compression spring pops up the top of the pressure plate shaft; the bottom end of the pressure plate shaft is connected with a pressure plate; the movable wiping assembly comprises a moving disc; and the periphery of the moving disc sleeves with a fastening clamp.

The present invention provides dental amalgam recycling systems, useful for recycling particles from a dental liquid effluent drawn, for example, from a suctioning device.

A vascular neck restraint training device is used for raining a first person to execute a vascular neck restraint on a second person. The training device includes a supporting structure, such as a collar for being supported about the neck of the second person, upon which a tracheal pressure sensor, and two arterial pressure sensors are supported for alignment with the trachea and the carotid arteries of the second person respectively. The sensors detect if an applied pressure during a vascular neck restrain exceeds a prescribed pressure threshold for that sensor and provides corresponding indication to the first person applying the pressure. The training device indicates if too much pressure is applied to the trachea corresponding to a respiratory neck restraint, and if sufficient pressure is applied to each of the carotid arteries for executing a successful vascular neck restraint.

The invention discloses a loading test device and a loading test system for testing a chloride ion permeation law in a concrete test piece, and belongs to the field of concrete tests, the loading testdevice comprises an outer check ring, an inner pressing ring, a conical pressing sleeve, a plurality of wedge-shaped pressing blocks and a pressing device;the inner pressing ring has elasticity, a concrete test piece is fastened between the inner pressing ring and the outer check ring to restrain the permeation direction of a chloride ion solution, the conical pressing sleeve coaxially penetratesthrough the inner pressing ring, an axial through hole is formed in the conical pressing sleeve, and the multiple wedge-shaped pressing blocks are evenly distributed between the inner pressing ring and the conical pressing sleeve in the circumferential direction. A pressure-bearing taper hole defined by the wedge-shaped side walls of the multiple wedge-shaped pressing blocks is matched with the conical pressing sleeve, and the pressing device is used for pressing the conical pressing sleeve into the pressure-bearing taper hole so as to apply a radial load; the loading test system further comprises a strain gauge and a signal test analysis system. The device is simple in structure, the concrete test piece can be pressurized through simple operation, and the test of the chloride ion permeation law in the concrete test piece is facilitated.

The invention discloses a brachial artery puncture point compression hemostat. The brachial artery puncture point compression hemostat comprises a bone plate; a fixing ring is arranged on the bone plate; the fixing ring is in a semi-circular ring shape and the two ends of the fixing ring are detachably connected with two side walls of the bone plate; a linkage plate is movably arranged on the fixing ring; the linkage plate is detachably provided with a compression device used for fitting with different wound types; the linkage plate is provided with a driving device for driving the linkage plate to do linear motion in the height direction of a wound of a patient; the fixing ring is provided with a control center for starting and stopping the driving device; the fixing ring is provided with a switch assembly for a medical worker to manually open and close the control center; and the switch assembly is in communication connection with the control center. The brachial artery puncture point compression hemostat solves the problems that hemostasis bandages are complex to disassemble and assemble, physical power of a doctor is excessively consumed in the disassembling and assembling process, local tension vesicles of arms of the patient are prone to generate, and the hemostasis bandages are difficult to fit with arm shapes of different patients and different puncture wound sizes in the prior art.