Abstract: A food grinder includes a grip mechanism having a flip cover body pivotally connected to a handle body, a cylindrical cutter set detachably mounted in the handle body, and a driving mechanism mounted in the grip mechanism. The grip mechanism includes first and second switch units electrically connected in series between a driving unit and a power supply unit. When the first switch unit is manually actuated to turn on while the second switch unit is actuated to turn on by the flip cover body as the flip cover body pivots toward a closing position, the driving unit operates with electric power supplied from the power supply unit to drive rotation of a cylindrical cutter of the cylindrical cutter set disposed in the handle body, such that a food ingredient in an inlet in the handle body is cut and grinded by the rotating cylindrical cutter.

Abstract: The present application discloses a crystal rod manufacturing method and a crystal rod belonging to a field of monocrystal growth technologies. The crystal rod manufacturing method of the present application includes a shoulder rotation step and a diameter equalization step, wherein in the shoulder rotation step and/or the diameter equalization step, hydrogen-containing gas is inputted. The hydrogen-containing gas includes hydrogen gas, a mass of the hydrogen gas is mH, a total mass of the hydrogen-containing gas is mtotal, an inequation as follows is satisfied: mH/mtotal?30%. The present application, by inputting the hydrogen gas during the process of manufacturing the crystal rods, can lower an oxygen content of monocrystals to reduce defects in the monocrystalline silicon, which can reduce formation of boron oxygen complexes and prevent a phenomenon of efficiency degradation when boron-doping monocrystals are pulled.

Abstract: Dual refrigeration systems for a mono-crystal furnace and methods for pulling a mono-crystal. The first heat exchange assembly includes a first heat exchange mechanism capable of exchanging heat, and a first heat exchange channel and a second heat exchange channel communicating with the first heat exchange mechanism. The second heat exchange assembly includes a second heat exchange mechanism capable of exchanging heat, and a third heat exchange channel and a fourth heat exchange channel communicating with the second heat exchange mechanism. The second heat exchange channel and the fourth heat exchange channel are communicated with a cooling assembly of a water-cooled jacket and a cooling assembly of a mono-crystal furnace, respectively. A first fluid is introduced into the first heat exchange channel. A second fluid is circulated in the second heat exchange channel, cooling assembly of water-cooled jacket, the fourth heat exchange channel, and cooling assembly of mono-crystal furnace.

Abstract: A suspended lifting device for diversion cylinder is provided, wherein the suspended lifting device includes a lifting beam connected to a surface of a water-cooling cross arm. A groove is provided on the lifting beam, and the groove is configured to receive a lifting bolt. A positioning plate is disposed on a bottom side of the lifting beam close to the water-cooling cross arm, and the positioning plate is configured to control an angle between the lifting beam and the water-cooling cross arm.

Abstract: The present disclosure provides a flow guide cylinder lifting assembly, including a flow guide cylinder lifting component disposed on a water-cooling lateral arm and a lifting bolt, wherein the lifting bolt is disposed in the flow guide cylinder lifting component, a lower end of the lifting bolt extends downward through an opening of an upper heat-insulating cover of the flow guide cylinder, a lifting nut is disposed at an upper end of the lifting bolt, and the lifting nut is matched to the lifting bolt to raise or lower the flow guide cylinder.

Abstract: The present disclosure provides a water-cooled screen for improving a pulling rate of a silicon crystal, the water-cooled screen being a hollow cylinder including an inner wall surface and an outer wall surface, where at least a portion of the inner wall surface is a curved surface having a plurality of convex or concave points. The present disclosure further provides a mould for preparing the water-cooled screen.

Abstract: A method for detecting a surface welding quality of friction stir welding includes: acquiring a continuous surface depth image of a welding seam; intercepting a surface depth image segment of the welding seam with a proper step size, and dividing the intercepted surface depth image segments of the welding seam into a front reference region, a thinned region and a rear reference region; judging whether flatness of the front reference region is less than a threshold, and if yes, taking a height of the front reference region at this point as a latest reference height; if no, judging whether the flatness of the rear reference region is less than the threshold, and if yes, taking a height of the rear reference region at this point as the latest reference height; if no, taking the reference height of previous depth image segment as the latest reference height; and calculating a difference.

Abstract: A method for detecting a surface welding quality of friction stir welding includes: acquiring a continuous surface depth image of a welding seam; intercepting a surface depth image segment of the welding seam with a proper step size, and dividing the intercepted surface depth image segments of the welding seam into a front reference region, a thinned region and a rear reference region; judging whether flatness of the front reference region is less than a threshold, and if yes, taking a height of the front reference region at this point as a latest reference height; if no, judging whether the flatness of the rear reference region is less than the threshold, and if yes, taking a height of the rear reference region at this point as the latest reference height; if no, taking the reference height of previous depth image segment as the latest reference height; and calculating a difference.

Abstract: A food grinder includes a grip mechanism having a flip cover body pivotally connected to a handle body, a cylindrical cutter set detachably mounted in the handle body, and a driving mechanism mounted in the grip mechanism. The grip mechanism includes first and second switch units electrically connected in series between a driving unit and a power supply unit. When the first switch unit is manually actuated to turn on while the second switch unit is actuated to turn on by the flip cover body as the flip cover body pivots toward a closing position, the driving unit operates with electric power supplied from the power supply unit to drive rotation of a cylindrical cutter of the cylindrical cutter set disposed in the handle body, such that a food ingredient in an inlet in the handle body is cut and grinded by the rotating cylindrical cutter.

Abstract: Implementations of this specification provide a method and an apparatus for processing ledger transactions using smart contracts in a blockchain. An example method performed by a blockchain node includes receiving data characterizing an ledger transaction for a target property, the data characterizing the ledger transaction including a unique identification code of the target property and a ledger content; generating the ledger transaction based on the data characterizing the ledger transaction for the target property, and releasing the ledger transaction to a block of the blockchain; and after the ledger transaction is verified by a consensus of the blockchain, storing the unique identification code of the target property and the ledger content in a distributed database of the blockchain.

Abstract: A food processor includes a base, a processing box and at least a cutter. The base is disposed with a motor inside, the motor is disposed with a rotating shaft; the processing box is assembled to the base and is disposed with a charging opening and a discharging opening. The cutter rotates synchronously with the rotating shaft of the motor, the cutter is assembled inside the processing box and is disposed with a cutter dish with several dropping grooves and several blades fixed on the cutter dish, the blade has several sets of cutter teeth arranged side by side, each set of cutter teeth has at least a large cutter tooth and at least a small cutter tooth.

Abstract: A food processor includes a base, a processing box and at least a cutter. The base is disposed with a motor inside, the motor is disposed with a rotating shaft; the processing box is assembled to the base and is disposed with a charging opening and a discharging opening. The cutter rotates synchronously with the rotating shaft of the motor, the cutter is assembled inside the processing box and is disposed with a cutter dish with several dropping grooves and several blades fixed on the cutter dish, the blade has several sets of cutter teeth arranged side by side, each set of cutter teeth has at least a large cutter tooth and at least a small cutter tooth.