427results about How to "Not easy to flow out" patented technology

The invention discloses a self-friction heat generation type petroleum pipeline anti-freezing device, and belongs to the field of petroleum pipeline anti-freezing. External wind energy is used for driving a vertical shaft windmill and a magnetic adjusting plate to rotate; through continuous rotating of the magnetic adjusting plate, magnetic acting force between the magnetic adjusting plate and heat generating rings changes circularly and repeatedly, the pair of heat generating rings close to the magnetic adjusting plate are caused to move back and forth constantly, and meanwhile, because equivalent magnetic force exists between adjacent heat generating rings, magnetic force balance between the heat generating rings is broken due to the moving of one heat generating ring, other heat generating rings are caused to move, the purpose of friction movement of a plurality of heat generating rings being driven by one heat generating ring is realized, and a large amount of heat is generated bycontinuous friction between first and second friction rings and the heat generating rings; and moreover, friction heat is also generated in the heat generating rings in the moving process, heat is transferred to heat conducting liquid through heat generation in two forms of friction so as to increase the temperature of the heat conducting liquid, and spontaneous heat preservation and anti-freezingof a petroleum pipeline are realized.

The invention provides a packaging method. The packaging method includes the steps that a plastic packaging layer is formed, wherein the plastic packaging layer is provided with a plurality of bearing regions and cutting regions between the bearing regions, a plurality of first openings penetrating through the plastic packaging layer are formed in the bearing regions, and the plastic packaging layer is provided with a first surface and a second surface opposite to the first surface; an insulating layer is formed on the first surface of the plastic packaging layer, wherein a second opening is formed in the insulating layer, and the position, located at the periphery of the first openings in the bearing regions, of part of the surface of the plastic packaging layer is exposed through the second opening; the first opening and the second opening are fully filled with conductive material to form a pin structure; a chip structure is provided; the chip structure is arranged on the insulating layer on the surfaces of the bearing regions of the plastic packaging layer in an inverted mode; sealing material layers are formed the surface of the insulating layer, the surface of the chip structure and a first surface of a lead structure; cutting is conducted along the cutting regions of the plastic packaging layer to form a packaging structure. By means of the packaging method, technology is simplified, cost is lowered, and appearance and electric connection performance of the formed structure are improved.

The present invention provides a polyester film, which consists of an inner layer impregnated with epoxy resin in a glass fiber matrix material whose weight per 1 m2 is more than 40 g and less than 115 g, and whose air permeability is less than 20 cm3 / cm2 / sec. At least one side of the layer is composed of an outer layer coated with epoxy resin, the reaction rate of the epoxy resin in the inner layer is more than 85%, and the reaction rate of the epoxy resin in the outer layer is less than 60%, which can be optimized. The molded laminated board or multilayer circuit board has excellent thickness accuracy and formability.

The invention discloses a water divider for fire fighting, and relates to the technical field of water dividers. According to the technical scheme, the water divider is characterized by comprising a main joint and water division joints connected with the main joint in a threaded manner, a main flow channel is formed in the main joint, a branch flow channel is formed in each water division joint, acontrol valve used for controlling opening and closing of the corresponding branch flow channel is arranged on each water division joint, and a first sealing ring seals the portion between the main joint and each water division joint. The fire divider for fire fighting is divided into the main joint and the water division joints, so that the main joint and the water division joints can be processed correspondingly; due to the fact that the size of the main joint is small, when the main flow channel inside the main joint is processed, the main joint can be conveniently turned over, and the processing of the main joint becomes more convenient and faster; due to the fact that the length of the main flow channel is shorter, a user can conveniently process the main flow channel in the main joint, the processing difficulty of the fire divider for fire fighting is reduced to a certain degree, and the time required by production of the water divider for fire fighting is shortened.

The invention discloses a cosmetic storage box. The cosmetic storage box comprises a box body, a box cover, storage bottles, movable pipes and a plurality of fixing holes. A fixed block is fixed inside the box body. The fixed block is provided with the fixing holes. The storage bottles stretch into the fixing holes to be fixed to the fixed block. A stopping plate is arranged below the bottle opening of each storage bottle, and a through hole is formed in the center of each stopping plate. Each stopping plate is provided with a plurality of positioning grooves and a plurality of through grooves penetrating through the corresponding stopping plate. Each movable pipe is made of an outer pipe body and a push-pull rod located inside the outer pipe body. A plurality of bosses matched with both the positioning grooves and the through grooves are arranged on the outer wall of each outer pipe body. The outside of each outer pipe body is sleeved with a sealing disk capable of moving along the outer pipe body. The top of each push-pull rod is provided with a round cake-shaped fixed disk, and each sealing disk and the corresponding fixed disk are connected through a plurality of first springs. The sealing disks are tightly pressed onto the corresponding stopping plates. The box cover covers the box body. A compression plate is arranged at the bottom of the box cover. According to the cosmetic storage box, the storage bottles are arranged inside the box body, different sorts of cosmetics can be placed into the storage box, and thus carrying is made convenient.