5722 results about "Gate valve" patented technology

A vacuum processing apparatus includes a vacuum processing chamber having a processing table for supporting an object to be processed and carrying out processing using a gas. The vacuum processing chamber has an axisymmetric structure, including a double wall structure, and a gate valve for sealing an opening through which the object enters the processing chamber.

The present invention uses a transportation robot furnished with a storage chamber 3 that can store substrate wafers S under an inert gas atmosphere, and when transporting substrate wafers S between transportation chambers 2 installed on processing apparatus 1 and holding an inert gas atmosphere, connection chamber 4 is disposed between storage chamber 3 and transportation chamber 2 when placing and removing substrate wafers S between storage chamber 3 of transportation robot 30 and the transportation chamber 2 of processing apparatus 1, and after introducing inert gas into the connection chamber 4 at low pressure, opening the gate valves GV1 and GV2 between storage chamber 3 and transportation chamber 2.

Described herein is a technique that can improve a quality of substrate processing. A substrate processing apparatus may include: a plurality of processing chambers; a vacuum transfer chamber; a plurality of transfer chambers; a plurality of gate valves; a plurality of first gas supply units configured to supply an inert gas to a substrate; a transfer robot; and a control unit configured to control the plurality of first gas supply units and the transfer robot to: supply the inert gas to the substrate at a first flow rate when a distance between a gas supply port and the substrate passing through the plurality of gate valves is a first distance; and supply the inert gas to the substrate at a second flow rate greater than the first flow rate when the distance between the gas supply port and the substrate is a second distance greater than the first distance when the substrate passes through the plurality of gate valves.

In a substrate processing apparatus for forming thin layers on a substrate used for an organic light emitting diode, the apparatus includes a mask attaching chamber, a deposition chamber and a mask detaching chamber. The mask attaching chamber, the deposition chamber and the mask detaching chamber are provided with a transferring guide installed thereinside, and a substrate supporter for supporting the substrate moves along the transferring guide in or between the chambers. Thus, a time for processing the substrate and an area for the apparatus may be reduced. Also, the chambers are grouped in one or more, and a gate valve is installed between the grouped chambers for opening and closing a path between the grouped chambers. Accordingly, the chambers may be continuously maintained in a vacuum state when any one of the chambers is repaired.

A waste gate valve device in which a waste gate valve 100 is fully closed when a valve body of the waste gate valve 100 moves from an exhaust outlet passage 18s side toward an exhaust bypass passage 5 side and touches a seat face 12a of a valve seat part 12, wherein the valve body of the waste gate valve is provided with a protrusion 2 of a prescribed height on a touching side where the valve body of the waste gate valve touches the seat face 12a, the protrusion being configured so as to reduce an exhaust gas passage area of the exhaust gas.

A gate valve has a transfer chamber-side valve element and a process chamber-side valve element connected to a single shaft actuated with a single three-position air cylinder to selectively close a process chamber opening and a transfer chamber opening or fully open both the openings to allow an object to pass therethrough. A lever member is secured to the single shaft. A roller supported by the lever member is kept in engagement with a cam groove of a cam member. A cam support member for supporting the cam member is connected to the piston rod of the three-position air cylinder. A spring is interposed between the lever member and the cam support member. When the piston rod is in the first (lower extremity) position, both the transfer chamber-side valve element and the process chamber-side valve element fully open the transfer chamber opening and the process chamber opening, respectively. As the piston rod shifts from the first position to the second position, the roller shifts from engagement with an upper position of the cam groove to engagement with an intermediate position, causing the process chamber-side valve element to close the process chamber opening. As the piston rod shifts from the second position to the third (upper extremity) position, the roller shifts from the engagement with the intermediate position to engagement with a lower position of the cam groove, causing the transfer chamber-side valve element to close the transfer chamber opening.

A gate valve has a body, the body having a cavity and a flow passage intersecting the cavity. A seat ring is mounted to the body at the intersection of the flow passage and the cavity, the seat ring having an engaging face. A gate in the cavity has an engaging face that slidingly engages the face of the seat ring while being moved between open and closed positions. A friction-resistant coating is on at least one of the faces.

The invention relates to an underground central pump room draining automatic monitoring system, which comprises a PLC control cabinet, a remote expanding module, a site data bus, a contact screen, an analog quantity and switching value input module, various monitoring probes, a travel switch, a level instrument and an executable section. A monitoring net adopts a form of combining a PROFIBUS DP site data bus and an industrial ethernet. A monitoring method for the system comprises: (1) monitoring the absorbing well water level; (2) monitoring the state for starting a high pressure switching cabinet by a water pump; (3) judging the valve levels of a gate valve, a ball valve of a water jet pumping device and a water distribution gate; (4) judging the valve levels of a vacuum pump ball valve; (5) measuring each equipment temperature measuring point; (6) measuring signals of a pressure sensor and a negative pressure sensor; (7) judging system faults; (8) automatically controlling the start-stop and operation numbers of the water pumps according to the absorbing well water level conditions; and (9) setting power supply peak avoiding time periods, and automatically selecting starting time and numbers of a pump. The system improves the system working reliability, reduces the equipment fault rate, and adopts a three-stage monitoring structure for a draining system.

The invention discloses a device and a method for detecting the leak rate of an O type rubber sealing ring used for spaceflight, which belong to the technical field of the detection of spaceflight components. The device comprises gas storage equipment, an inflation valve, a first pre-pumping valve, a second pre-pumping valve, a leak detection tooling, a leak marking valve, a standard leak, a vacuum gauge, a deflation valve, a leak detection valve, a leak detector, a forestage angle valve, a prepump, a molecular pump, an ultrahigh vacuum gate valve and a vacuum booster pump. The method comprises the following steps of: firstly, pumping the pressure of a detection chamber and a dummy module below the air pressure of 10Pa, then pumping the detection chamber to a lower pressure by the molecular pump, forming a pressure difference between the detection chamber of the leak detection tooling and the dummy module and afterwards introducing high-purity gas with a standard atmosphere pressure into the dummy module. If a leak exists in a rubber sealing ring to be detected, the high-purity gas can enter the detection chamber by the sealing ring under the action of the pressure difference, and the leak rate of the sealing ring can be accurately calculated by the magnitude of the change of the output indication of the leak detector. The invention has the advantages of high detection sensitivity, high detection efficiency, reliable result and the like.

Systems, apparatus, and program code, and methods for monitoring the health and other conditions of the valve, are provided. An exemplary system for monitoring the condition of the gate valve includes a logic module configured to perform the operations of receiving sensor data providing an acoustic emission, vibration, and/or stream level signature and determining the level of lubricity, level of friction, level of surface degradation, and leakage rate at a gate-valve seat interface. An exemplary method for monitoring the condition of the gate valve includes receiving sensor data providing an acoustic emission, vibration, and/or stream level signature and determining the level of lubricity, level of friction, level of surface degradation, and leakage rate at a gate-valve seat interface.

The invention is directed to a dispensing unit suitable to precisely dispense material in powdery and/or granular form. The dispensing device comprises an gate valve opening sealingly closed by a blend. A control unit, which is interconnected to a scaling device, controls the opening of the gate valve opening by the position of the blend. The precise amount of the material is adjusted in relation to the signal of the scaling device.

In a substrate processing apparatus for forming thin layers on a substrate used for an organic light emitting diode, the apparatus includes a mask attaching chamber, a deposition chamber and a mask detaching chamber. The mask attaching chamber, the deposition chamber and the mask detaching chamber are provided with a transferring guide installed thereinside, and a substrate supporter for supporting the substrate moves along the transferring guide in or between the chambers. Thus, a time for processing the substrate and an area for the apparatus may be reduced. Also, the chambers are grouped in one or more, and a gate valve is installed between the grouped chambers for opening and closing a path between the grouped chambers. Accordingly, the chambers may be continuously maintained in a vacuum state when any one of the chambers is repaired.

A gate valve (1) is constructed for the simultaneous blocking or clearing of two rectangular passage openings (8,9) of two chamber walls (4,5) that are provided between two vacuum chambers (1,3) and aligned with one another. To this end, it has two valve plates (20, 21), which are a component of a slider (15), which is situated so that it can move with play from a position clearing the passage openings (8,9) to a position which closes the passage openings (8,9). To move the valve plates (20,21) to the closing setting against the passage openings (8,9) on the slider (15), at least one lifting element (24), which is acted on by pressure, is provided.

A wedge gate valve having a valve body defining a valve chamber and flow passages and upwardly diverging circular seat surfaces of circular, flat configuration and defining seat planes. A valve disk or wedge having downwardly converging sealing surfaces is movable within said valve chamber between open and closed positions for controlling flow through the valve. Pressure boundary plates connected by hubs to the valve disk define the sealing surfaces of the disk and have bottom corners that establish line contact with the downstream seat surface and prevent any portion of said sealing surfaces of said valve disk from crossing the sealing plane of the downstream seat in the event of flow responsive downstream movement of the valve disk during its opening and closing movement. Guide ears of the disk are provided with flexible upper and lower extremities and rounded or chamfered inner end surfaces to minimize localized peak contact stress with disk guide rails of the valve body. The center section of the disk is rendered flexible by the provision of an internal transverse cavity that extends completely through the center section or is located centrally of the center section to define flexible walls between the hubs to thus provide for disk flexibility for overcoming the tendency for disk binding. A valve actuator for opening and closing the valve disk is provided with an adjustable downstop to prevent overtravel of the disk during seating.

An opening is provided for an exhaust bypass pipe that bypasses an exhaust turbine of an exhaust turbine supercharger. According to the opening, an exhaust gas amount bypassing the exhaust turbine is calculated. An exhaust gas amount supplied to the exhaust turbine is found by subtracting the waste-gate-valve-passing gas amount from an intake air amount (exhaust gas amount) detected by the air flow meter. A rotational speed of the exhaust turbine is calculated from this turbine-supplied gas amount. An estimated boost pressure is calculated from this rotational speed of the exhaust turbine. Consequently, a boost pressure can be accurately estimated without using a boost pressure sensor even under such conditions as to disable detection of boost pressures or degrade the detection accuracy in a system using a conventional boost pressure sensor.

The present invention relates to methods and apparatus that are optimized for producing Group III-N (nitrogen) compound semiconductor wafers and specifically for producing GaN wafers. Specifically, the methods relate to substantially preventing the formation of unwanted materials on an isolation valve fixture within a chemical vapor deposition (CVD) reactor. In particular, the invention provides apparatus and methods for limiting deposition/condensation of GaCl₃ and reaction by-products on an isolation valve that is used in the system and method for forming a monocrystalline Group III-V semiconductor material by reacting an amount of a gaseous Group III precursor as one reactant with an amount of a gaseous Group V component as another reactant in a reaction chamber.

A substrate processing device includes a depressurizable hot wall chamber having a sidewall with a temperature which becomes higher than room temperature and a first substrate transferring port provided in the sidewall, a depressurizable transfer chamber having a transfer arm mechanism and a second substrate transferring port, and a gate valve unit provided between the hot wall chamber and the transfer chamber. The gate valve unit includes: a housing having a sidewall provided with communicating holes, a first housing substrate transferring port, and a second housing substrate transferring port; a valve body which is elevatable in the housing; and a double sealing structure having a first sealing member and a second sealing member provided at an outer side of the first sealing member. The communicating holes communicate a gap between the first sealing member and the second sealing member with an internal space of the housing.