12results about How to "Extended maintenance intervals" patented technology

The invention relates to a device (10) for providing air into a combustion furnace (18), the device (10) comprising: a sleeve (11) enclosing a distribution chamber (20) and a feed duct (21) extending outwardly from the distribution chamber (20); an inlet (12) for receiving air from an air source into the distribution chamber (20); an outlet (13) located at the end of the feed duct (21) for discharging air from the inside of the sleeve (11); an inlet valve (19) arranged at the inlet (12) and adjustable to control the air entering the distribution chamber (20) through the inlet (12); a damper (14) arranged within the feed duct (21) and movable from a restricted position to an open position, or to a position between them, to regulate the flow of air discharged through the outlet (13). In the device (10) according to the invention, the damper (14) comprises a first flow-limiting element (15a) and a second flow-limiting element (15b), which are arranged one above the other and at a distance from one another in the feed duct (21), the first flow restriction element (15a) and the second flow restriction element (15b) are arranged such that at least a portion of the air flowing from the distribution chamber (20) to the feed duct (21) can flow through a gap (GP) between the first flow restriction element (15a) and the second flow restriction element (15b) to the outlet (13). The invention also relates to a combustion furnace (18) and to a method for providing air into a combustion furnace (18).

The invention provides epitaxial equipment and a wafer transfer method thereof, and the epitaxial equipment is characterized in that a first valve assembly is connected between a loading locking chamber and a transfer chamber, a second valve assembly is connected between the transfer chamber and a process chamber, and the loading locking chamber is connected with a first air inlet channel and a first air outlet channel; the transmission cavity is connected with a second air inlet channel and a second air outlet channel, the first air inlet channel and the second air inlet channel are connected to the same air inlet end, the first air outlet channel and the second air outlet channel are connected to the same air outlet end, and the first air outlet channel and the second air outlet channel are provided with flow control valves. The process chamber is respectively connected with a third air inlet channel and a third air outlet channel, a pressure regulating butterfly valve is arranged on the third air outlet channel, and the pressure regulating butterfly valve is a pressure regulating butterfly valve without a sealing element. According to the extension equipment, the sealing performance requirement of the pressure regulating butterfly valve is lowered, and the service life of the pressure regulating butterfly valve is prolonged.

The utility model provides a kind of impeller injection mold, including upper die plate, lower die plate, core mould and sliding block;The core mould is located on upper die plate, the sliding block is circumferentially distributed in the periphery of core mould, and the sliding block, core mould, upper die plate and lower die plate constitute the mold cavity of impeller;The sliding block is combined sliding block, and the combined sliding block includes upper layer sliding block and lower layer sliding block, and the lower layer sliding block is movably installed on upper die plate along second direction, and the upper layer sliding block is movably installed on lower layer sliding block along first direction, and the lower layer sliding block is connected with second straight line mechanism, for driving lower layer sliding block to move on upper die plate along second direction;The upper layer sliding block is connected with first straight line mechanism, for driving upper layer sliding block to move on lower layer sliding block along first direction.The utility model solves high negative angle blade demolding damage problem by combined sliding block, greatly improves yield, and moreover prolongs the service life of mould, reduces maintenance cost.

The utility model discloses a kind of MBR membrane online cleaning device, including fixing frame, still including MBR membrane material and cleaning mechanism, MBR membrane material is equidistantly installed in the inside of fixing frame, cleaning mechanism is provided at the top of fixing frame, the cleaning mechanism includes mounting bracket, electric push rod, movable plate, fixed rod, mounting plate, liquid inlet pipe and spray pipe, the mounting bracket is connected to the top of fixing frame and electric push rod bottom end is fixed to the top center position of mounting bracket by fastener, while controlling electric push rod operation when water washing, make its power end slowly push movable plate and cleaning assembly to descend, to realize the overall cleaning of MBR membrane material from top to bottom, after cleaning a group of membrane material, reset movable plate, make that mounting plate and the membrane material to be cleaned are aligned by sliding mounting bracket position, can continue to carry out cleaning operation, can be online cleaning to membrane material when needed, without frequent disassembly and installation, while expanding maintenance interval period, reduce the number of overall disassembly cleaning, improve cleaning convenience.

A first general aspect of the present disclosure relates to a computer-implemented method for determining a control variable vector for adjusting a system. The method comprises the following steps: determining a first state vector; generating a stability rule based on a stability metric and the first state vector; receiving a control variable preset vector; and calculating a control variable vector based on the stability rule and the control variable preset vector.

The application discloses an anti-skid tensioning wheel for automobile transmission and belongs to the technical field of tensioning wheels. The anti-skid tensioning wheel comprises a mounting seat, a pressure plate slidably connected to the mounting seat, a wheel frame slidably connected to the pressure plate, a pressure spring arranged on the pressure plate, and a tensioning wheel rotatably connected to the wheel frame. A non-circular insertion column is slidably connected to the wheel frame. An adjusting screw is rotatably connected to the pressure plate. A driving ring is rotatably connected to the mounting seat. The driving ring is in transmission connection with a transmission belt. The pressure plate and the wheel frame slide relative to each other to drive the non-circular insertion column to slide. When the pressure plate and the wheel frame are located at positions close to each other, the tensioning wheel keeps pressing the transmission belt. When the pressure plate and the wheel frame are located at positions far away from each other, the tensioning wheel slides to the transmission belt and further presses the transmission belt. When the transmission belt slips, the tensioning wheel slides to further press the transmission belt. After slipping, the tensioning wheel can provide tension to the transmission belt again. The transmission belt can be conveniently disassembled. The anti-skid tensioning wheel adopts a pure mechanical structure, and the failure rate is reduced.

The utility model relates to the technical field of sliding windows, in particular to a high-performance sliding waterproof energy-saving window which comprises a main body, a sliding assembly is arranged in the main body, and a dustproof assembly is arranged on the side face of the main body. The first electric control telescopic rod and the second electric control telescopic rod are used for controlling the first glass plate and the second glass plate respectively, automatic pushing can be conducted in a crossed mode, automatic pushing is safe and convenient, and the outer shell made of stainless steel has the advantages of being good in sealing performance, anti-theft function and the like. The automatic intelligent control sliding window has the advantages of being easy and fast to use, easy, convenient and flexible to install and the like, is long in maintenance period, saves space, is free of radiation pollution and noise interference, is durable, safe and reliable, and can effectively prevent dust, sundries and the like from entering a room through the dustproof frame net, so that the room is protected from being polluted.

The application discloses an assembled laminated floating slab damping system and a mounting method thereof, and aims to solve the problems of high rigidity, narrow damping frequency band, low construction efficiency, difficult maintenance and the like of the existing floating slab damping system; in the system, upper and lower prefabricated concrete slabs are bonded into a laminated floating slab through a composite slab, the laminated floating slab can provide high damping and a flexible interface, effectively dissipate vibration energy, and can jointly form a multistage damping system with an elastic pad plate to expand the damping effect; connecting pieces are overlapped on two laminated floating slabs, and connecting pad plates are arranged between the laminated floating slabs and the connecting pieces; the connecting pad plates are integrally formed with an elastic layer through a steel plate and vulcanization, and can additionally provide elastic connection and reduce stress concentration.

The utility model discloses a transfer platform and a transfer platform system, which are used for transferring railway vehicles, and the transfer platform comprises a bearing platform body, an upper part of which is used for arranging a vehicle; the linear motor is arranged at the bottom of the bearing table body, and the linear motor is used for being matched with an induction plate arranged on the fixed base surface to generate traction force so as to drive the bearing table body to move. The linear motor is matched with the induction plate arranged on the fixed base plane to generate traction force on the bearing platform body, the bearing platform body is driven to move, and transportation of railway vehicles by the transfer platform is achieved. The linear motor is matched with the induction plate on the fixed base plane to directly drive, a complex transmission system is not needed for transmission, the structure of the transfer platform is simplified, the size of the transfer platform is reduced, and the weight of the transfer platform is reduced; the maintenance period is prolonged, the maintenance frequency is reduced, and the maintenance difficulty and the maintenance cost are reduced; the sensor can be compatible with an existing fixed base plane, only one layer of sensing plate needs to be laid on the existing fixed base plane, and generalizability is high.

This invention discloses a charge generation device and method based on potential difference, belonging to the field of energy conversion technology. The spatial layout of the device is completely isomorphic to the Earth's latitude and longitude system: a stationary heat storage body is at the center, surrounded by a sealed medium cavity, a stationary thin shell, and moving parts. The upper part is the North Pole, with a positive charge lead-out end, and the lower part is the South Pole, with a negative charge lead-out end. The radial temperature gradient established by the heat storage body drives medium convection. The moving parts horizontally surround and reinforce particle collisions along the latitudinal direction, generating electricity. The inner surface of the stationary thin shell is divided into upper and lower hemispheres, naturally separating positive and negative charges based on the difference in the material's work function. Positive charges accumulate along the meridian from bottom to top to the North Pole, and negative charges accumulate along the meridian from top to bottom to the South Pole, naturally outputting direct current. This device does not rely on permanent magnets, a through-axis, or magnetic flux cutting conductors; it can directly utilize low-grade thermal energy as the main energy input. The system follows the law of conservation of energy; thermal energy contributes the main part of the input energy, and artificial mechanical work serves only as an auxiliary condition, enabling the output electrical energy to exceed the artificial mechanical input power. The core topology can be flexibly scaled to adapt to a variety of low-grade heat recovery and independent off-grid power supply scenarios, ranging from residential to industrial applications.

The invention relates to a recycled aggregate positive pressure winnowing device which comprises a fan, a winnowing device body, an impurity removal box body and a dust-free circulating air duct, the fan is connected with an air inlet of the winnowing device body through a fan outlet pipeline, and an air outlet of the winnowing device body is connected with an impurity removal box body feeding port of the impurity removal box body. An air outlet of the impurity removal box body is communicated with one end of a dust-free circulating air duct, and the other end of the dust-free circulating air duct is connected with a fan through a fan inlet pipeline, so that a closed air circulation loop is formed. A plurality of baffle plates forming a certain angle with the airflow direction of the feed port of the impurity removal box body are arranged in the impurity removal box body and form a labyrinth baffle plate array, and a dustproof partition plate is arranged between the impurity removal box body and the dust-free circulating air duct.