Abstract: The present invention discloses a thermal protection device for a single-phase dual-voltage motor, comprising a motor winding, a small-current thermal protector, a large-current thermal protector, wherein the motor winding comprises a main phase winding or comprises a main phase winding and a secondary phase winding, the main phase winding is divided into two portions comprising a first main phase winding and a second main phase winding. According to the above description, in the present invention, two different large and small thermal protectors are used to implement a thermal protection function at different voltages for the single-phase dual-voltage motor by means of an appropriate connection of the circuit, and both use of the protector that can be bound on the stator coil and adoption of a solution in which the slide switch substitutes for the conventional relay significantly reduce the cost and shorten the delivery time, thereby improving the product competitiveness.

Abstract: The present application relates to a method performed at an electronic device for parsing tables in a PDF document. The method includes the following steps: receiving the PDF document containing a table area; extracting horizontal lines, vertical lines and text blocks in the table area; determining the types of tables in the table area according to the extracted horizontal lines and vertical lines; if the table is a quasi full-line table, determining the structure of the quasi full-line table in the table area according to the horizontal lines and the vertical lines in the table area with the assistance of the text blocks in the table area; and if the table is a quasi non-line table, determining the structure of the quasi non-line table in the table area according to the text blocks in the table area with the assistance of the horizontal lines and/or the vertical lines in the table area.

Abstract: The present application relates to a method performed by an electronic device for positioning a table in a PDF document. The method comprises the following steps: receiving the PDF document containing the table; extracting character information and line information from vector stream information of the PDF document; and positioning a table area in the PDF document according to the extracted character information and line information. The method and the device in the present application perform table area positioning based on all lines and text blocks in a page. Compared with the prior art, the method and the device have the advantages that the accuracy of the table area positioning can be greatly improved, and a foundation is provided for accurate analysis of table information.

Abstract: The present application relates to a method and a device for parsing a table in a document image. The method comprises the following steps: inputting a document image to be parsed which includes one or more table areas into the electronic device; detecting, by the electronic device, a table area in the document image by using a pre-trained table detection model; detecting, by the electronic device, internal text blocks included in the table area by using a pre-trained text detection model; determining, by the electronic device, a space structure of the table; and performing text recognition on a text block in each cell according to the space structure of the table, so as to obtain editable structured data by parsing. The method and the device of the present application can be applied to various tables such as line-including tables or line-excluding tables or black-and-white tables.

Abstract: A combined sump pump with a backup pump structure includes a primary pump, a check valve device for the primary pump, a pipeline connection device arranged on one side of the primary pump and the backup pump, a backup pump, and a check valve device for the backup pump; the primary pump and the pipeline connection device are connected by the check valve of the primary pump, the backup pump and the pipeline connection device are connected by the check valve of the backup pump; the primary pump is equipped with a primary pump float switch, a primary pump float ball is provided under the primary pump float switch, a backup pump hoop is provided on the pipeline connection device, a backup pump float switch is provided on the backup pump hoop, and a backup pump float ball is provided under the backup pump float switch.

Abstract: This invention discloses a portable self-priming pump, which includes a pump body, a pump cover, a rubber impeller with a metal insert, and a metal shaft. An inner cavity formed by the pump body, in the side wall of the pump body provided with a water inlet and a water outlet which are communicated with the inner cavity, the water inlet and the water outlet are in the same plane and the angle formed by their axes is 20°-160°, the inner cavity is designed with a cam-shaped structure and the rubber impeller with a metal insert is placed in the inner cavity. The whole structure of the portable self-priming pump is simplified, so it's convenient for installation, manufacture and disassembly and maintenance, and it is with a small sized volume which occupies small space and is suitable for operation in narrow space, and it has high practicality accordingly.

Abstract: The invention discloses a vertical-shaft sewage pump with an anti-collision switch, which comprises a water pump driving component, a switch controlling component, a base and a pillar fixed on the base. The electrical connection part includes a tab electrically connected with the drive motor, a base disposed on the upper surface of the switch controlling component, and a pin inserted in the base, the upper end of the pin is connected with the tap, and its lower end is connected with a micro switch which disposed in the water pump driving assembly via a wire. The water pump, the switch part and the main body of the water pump of the present invention adopt an integral package, which has a simple structure so that convenient for installation and is not easy to be damaged.

Abstract: An anti-blocking light sewage pump without cooling oil is described in the present application, comprises a motor housing, a motor, a funnel-shaped pump body, an anti-blocking impeller made of flexible rubber, and a filter screen. The motor and the funnel-shaped pump body are arranged in the motor housing, the anti-blocking impeller made of flexible rubber is arranged in said funnel-shaped pump body, said anti-blocking impeller made of flexible rubber is coaxially connected with the motor through an iron core. The anti-blocking light sewage pump without cooling oil comprises an inverted conical impeller which is not easy to block and a conical funnel-shaped pump body which is easy to expel the granular blockage, which can effectively reduce the problem of pump blocking, avoid the occurrence of the burnout of the motor, and prolong the service life of the pump.

Abstract: This invention discloses an electric motor back cover with a sealing structure, which includes a cylinder and a cover plate, the cover plate is disposed within the cylinder, and a first O-shaped groove and a second O-shaped groove are concavely arranged on the outer surface of the cylinder, the first O-shaped groove is located above the second O-shaped groove. A position-limitation protruding ring is arranged on the outer surface of the cylinder, and at least one power cord outlets are arranged on the cover plate, and a circle of upward protruding waterproof cofferdam is arranged on the edge of each power cord outlet. The outer wall of the waterproof cofferdam. Via adding waterproof cofferdam on the edge of the power cord outlet is to prevent the condensed water from going into the interior of the motor and improved the stability of use.

Abstract: The invention discloses a pipeline connecting device for rapid installation and disassembly and self-locking and self-sealing, which is used for the connection of water pipes, including a thread compression sealing mechanism and a metal circlip self-locking and disassembling mechanism, said metal circlip self-locking and disassembling mechanism includes a metal circlip. The thread compression sealing mechanism includes a threaded base, a threaded upper cap and a sealing ring. The water pipe extends into the threaded base through a threaded upper cap. With the aforementioned structure, the pipeline connecting device for rapid installation and disassembly and self-locking self-sealing according of the present invention, the threaded base is installed at the outlet of the water pump, and the quick installation and disassembly of the water pipe are achieved, and the self-locking and self-sealing effects are achieved at the same time.

Abstract: This invention discloses a multipurpose float switch mounting bracket, which comprises a curved plate and a flat plate, the curved plate is connected to a first end of the flat plate, and two position-limitation strips are arranged on the outer convex surface of the curved plate, the flat plate is provided with a first set of mounting holes and a second set of mounting holes. The pump is provided with a first set of threaded holes which are corresponding to the first set of mounting holes, and the float switch is provided with a second set of threaded holes which are corresponding to the second set of mounting holes. Via the above solution, the multipurpose float switch mounting bracket fixes the float switch onto the pump by connecting the flat plate of the bracket to the float switch and the pump with screws.

Abstract: The invention discloses an anti-blocking ultra-low water level land submersible amphibious pump, which comprises an outer shell body, a motor, a water tank, a motor housing, a flowing guiding disc, a cover plate, a flow guiding chamber, an impeller, a suction nozzle and a base. The motor and the water tank are provided in the outer shell body. The motor is disposed in the motor housing. A half of the motor housing is accommodated in the water tank. In the aforementioned manner, the present invention provides an anti-blocking type ultra-low water level land submersible amphibious pump, which has both functions of a ground pump and a submersible pump, realizes the amphibious function, has the advantages of convenient and flexible movement, and better expands the adaptability range of the pump.

Abstract: A method and device for coding screen content into a bitstream by selecting a color palette table for a coding unit (CU) of screen content, creating a color index map having indices for the coding unit (CU), and encoding the selected color palette table and the color index map for the CU into a bitstream.

Abstract: The invention relates to a commutator, comprising an insulating base and a plurality of commutator segments arranged on the insulating base, wherein each commutator segment comprises a metal layer, a transition layer and a graphite layer arranged on the base in sequence. The transition layer contains a material identical to that of the graphite layer and a material identical to that of the metal layer. The invention further relates to a motor comprising the commutator and a method for manufacturing the commutator. As the transition layer contains the material identical to that of the graphite layer and the metal layer, the problem that the graphite layer and the metal layer are cracked during high temperature sintering is resolved. The service life of the commutator is prolonged. The method for manufacturing the commutator reduces chemical contamination and production cost caused by electroplating and brazing used in a traditional technology.

Abstract: An intelligent failure self-diagnostic convertible jet pump includes a control circuit system, a drive motor, a junction box, a light guide column and hydraulic components. The control circuit system includes a signal acquisition circuit, a MCU circuit, a drive circuit and an alarm display circuit. The control circuit system is disposed in the junction box and connected to the drive motor. The junction box is fixed on the surface of the motor housing using via screws and locking mechanism. The light guide column is fixed on the junction box and connected to the diagnostic control panel of the control circuit system. The hydraulic components include a venturi, a diffuser and an impeller. The impeller is coaxially connected to the drive motor.

Abstract: An intelligent control clogging-free water-cooled multifunctional pump includes a housing, a U-shaped water-through tank, a motor, an axial flow style cover plate, a flexible rubber conical impeller, a double-channel conical diffuser, a filter and an intelligent water level controller. The motor is placed inside the housing. The motor is provided with a control board. The U-shaped water-through tank is placed under the housing. The flexible rubber conical impeller is coaxially connected to the motor. The axial flow style cover plate is placed at the bottom of the U-shaped water-through tank. The double-channel conical diffuser is disposed under the cover plate and the conical pattern of the flexible rubber impeller is consistent with those disposed on the double-channel diffuser.

Abstract: An apparatus is configured to perform a method for screen content encoding. The method includes deriving a palette table and a color index map based on a coding unit (CU). The method also includes encoding the palette table and encoding the color index map. The method further includes combining the encoded palette table and the encoded color index map for transmission to a receiver, where the palette table and index map are decoded to reconstruct a pixel block.

Abstract: A dispersion of (meth)acrylate copolymer containing a hydroxyalkyl (meth)acrylate comonomer unit, which is obtained from polymerization of monomers comprising or consisting of, based on the total monomer weight, (a) from 25 to 45% by weight of at least one monovinyl aromatic monomer and/or methyl methacrylate; (b) from 50 to 70% by weight of at least one C4-8 alkyl (meth)acrylate; (c) from 2 to 7% by weight of at least one hydroxyalkyl (meth)acrylate; (d) from 0 to 1% by weight of at least one ?,?-monoethylenically unsaturated C3-6 monocarboxylic or dicarboxylic acid; and (e) from 0 to 0.65% by weight of (meth)acrylamide, N-hydroxyalkyl (meth)acrylamide, 2-acrylamido-2-methylpropane sulfonic acid or a combination thereof. A powder of (meth)acrylate copolymer containing a hydroxyalkyl (meth)acrylate comonomer unit obtained by drying the dispersion. A flexible cementitious waterproofing material including the dispersion or the powder.

Abstract: A method for making lithium iron phosphate is provided. A lithium chemical compound, a ferrous chemical compound, and a phosphate-radical chemical compound are mixed in an organic solvent to form a mixture. The mixture is solvothermal reacted in a solvothermal reactor at a predetermined temperature. A protective gas is introduced into the solvothermal reactor during the solvothermal reaction to increase a pressure in the solvothermal reactor to a level higher than a self-generated pressure of the solvothermal reaction.