31results about How to "Can't fall off" patented technology

The compound Chinese medicinal stone consists of sintered carrier of natural Chinese medicinal stone powder and reduce iron powder in the ratio of 100 to 5-40 and photosensitive catalyst film carrier onto the surface and of TiO2 and Ag, Cu, Pt or Pd in the weight ratio of 100 to 0.5-3. It is prepared through mixing natural Chinese medicinal stone powder and reducing iron powder as well as adhesive, sintering and cooling to obtain sintered carrier, and depositing the photosensitive catalyst film. The compound Chinese medicinal stone in different shapes may be used to degrading and adsorbing metal ions, organic matter and germ in purity water and in health care and may be recovered for reuse.

The invention relates to the field of hooks, in particular to an anti-dropping device for a hook which is convenient for installation and disassembly. Each triangular support plate of the present invention is composed of a short board and a long board, and the angle between the short board and the long board ranges from 50 degrees to 70 degrees; the bottoms of the two short boards are connected by a bayonet, and the bottoms of the two long boards pass through Pin connection; the intersection of the short and long plates of the two triangular support plates is connected by a pin. The device of the invention can effectively improve the safety of the hoisting operation, and can satisfy the long-term high-intensity use, is easy to recover after the device fails, and can effectively reduce the labor intensity of the operators.

The invention discloses a removing device of a well pipe of an abandoned water well. The removing device comprises a hoist pan, a pulling ring, two pairs of lifting rings, two pairs of lifting hooks, limit clamping blocks, a limit conical bar and a powder flask. The pulling ring is fixedly arranged on the hoist pan, the two pairs of lifting rings are symmetrically and fixedly arranged under the hoist pan, the upper ends of the two pairs of lifting hooks are symmetrically hinged to the lifting rings, and the limit clamping blocks are correspondingly and fixedly arranged on the lifting hooks. The rear ends of each pair of lifting hooks are fixedly provided with powder flask holes, the two ends of the powder flask are movably arranged in the holes, and the upper end of the limit conical bar is connected with the hoist pan through a steel wire rope and movably arranged in the two pairs of lifting hooks. An ignition wire is ignited to detonate the powder flask, the explosive power enables the two pairs of lifting hooks to be shot into the well pipe, penetrate through the well pipe and hook the well pipe at the same time, the limit conical bar falls down to be matched with the limit clamping blocks on the lifting hooks, fixing claws arranged at the ends of the hooks also guarantee that the lifting hooks can not fall off, and then the water pipe is pulled out through a crane or a hoisting device on the ground. The removing device of the well pipe of the abandoned well is simple in structure, low in cost, good in effect, and suitable for being used and popularized in the vast rural areas.

The invention discloses a spring fixing structure of a rolling rotor type compressor and the rolling rotor type compressor, and belongs to the technical field of compressors. The spring fixing structure of the rolling rotor type compressor comprises a spring hole, a fixing chamber and a spring, wherein the spring hole is formed in a cylinder body and extends from the outer wall surface into a slip sheet groove used for mounting a slip sheet in the radial direction of a cylinder; the fixing chamber is formed in the cylinder body and structured by a part, close to the outer wall surface of the cylinder, of the spring, wherein the part is enlarged along the spring hole diameter; the spring is provided with a partial pressing part which can be freely telescoped and is arranged in the spring hole and a radially-enlarged fixing part which is connected with the partial pressing part; a partial pressing end of the partial pressing part abuts against the slip sheet; the diameter of the fixing part is larger than that of the spring hole, and the fixing part is supported into the fixing chamber; a part, abutting against the spring, of the fixing chamber, is a plane through which the fixing part of the spring can be stably propped, and thus the spring can be continuously and effectively fixed, and as a result, the sealing between the slip sheet and a roller can be ensured.

The invention discloses an anti-falling bottle opening structure. The structure comprises a bottle mass; the bottle mass comprises a bottle body and a bottle lid; the bottle body is provided with a bottle opening, a bottle neck and a rhombic connecting part; the bottle opening is connected with a sleeve cover; an arc projection is arranged on the outer side of the bottle opening; the bottle lid isprovided with a first circular through hole; a pressing head is connected to the first circular through hole; and multiple convex pins and multiple clamping projections are arranged on the inner wallof the bottle lid. The sleeve cover is provided with a circular groove; an anti-falling stop part is arranged on the inner wall of the circular groove, and is clamped with a circular projection; multiple U-shaped gaps are formed in the circular groove; a triangular projection, approaching the circular groove and gradually reduced, is arranged on the inner wall of the sleeve cover; the sleeve cover is provided with a transverse projection in the diagonal direction; the circular projection is arranged on the sleeve cover; and the circular projection is provided with a second circular through hole and an arc gap groove. The structure is reasonable in structure and simple in assembly, and prevents falling of the sleeve cover from the bottle opening.

The invention relates to a refrigeration device with built-in parts, in particular pull-out drawers (4), which are guided on telescopic pull-out mechanisms (5) and can be accessed from an inner chamber (3 ) out. Each telescopic drawing mechanism (5) includes at least one rail (9) fixed in the inner chamber (3), a rail (9) movable with the built-in part (4) in the depth direction of the inner chamber (3) ( 12) and a cover (13) extending along the movable rail (12). The at least one first cover (13) and the built-in part (4) have structures (16, 28) which match each other in the width direction of the inner chamber (3) and engage in a form-fitting manner.

The invention provides a double-row type pulley sheave, comprising a fixed sheave seat and a movable sheave seat fixed on the fixed sheave seat, wherein the irregular surfaces of the fixed sheave seat and the movable sheave seat are parallel; a fixed sheave is arranged in the fixed sheave seat; a hanging ring is arranged on the top of the fixed sheave seat; a movable sheave is installed in the movable sheave seat; slide grooves are arranged on baffles at the both sides of the movable sheave seat respectively; the sheave shaft of the movable sheave is arranged in the slide grooves; threads are arranged at the both ends of the sheave shaft; the movable sheave and the movable sheave seat are fixed via a nut; and the friction surface of the fixed sheave and the friction surface of the movable sheave are of concave arc shapes. The double-row type pulley sheave has the advantages of scientific design, reasonable structure and good in anti-falling-off effect, and is simple to use.

The invention discloses a sintering method for improving the mechanical strength of a tantalum wire, which comprises the following steps of: taking the metal which is lower in melting point and is easy to have a reaction with water or acid by itself or oxide of the metal as deoxidant, and jointing sintering with the pressed tantalum wire under the vacuum state, so that the oxidized part of the tantalum wire is deoxidized, and continuously heating under the vacuum state to sinter the tantalum wire and crystallize the tantalum wire after the deoxygenation is completed, so that the mechanical strength of the tantalum wire can be improved. The specific technical scheme of the sintering method comprises the following steps of: firstly putting the metal deoxidant and a container which is to be filled with the tantalum wire to be sintered such as a tantalum crucible into a vacuum film plating device, heating under the vacuum state, so that the metal deoxidant is evaporated, and forming a layer of metal film on the surface of the container filled with the tantalum wire by the metal deoxidant after cooling; and putting the tantalum wire into a film-plated container to be sintered in the vacuum sintering furnace.

The invention discloses a safety plug, and aims to solve the technical problem that an existing conventional safety plug is poor in safety. According to the technical scheme, the safety plug comprises a shell, a check ring and a plug body. A circular truncated cone is designed on the top end face of the plug body. A check ring groove matched with the circular truncated cone on the plug body is designed in the check ring. The circular truncated cone on the plug body is matched with the check ring groove in the check ring to form the safety plug. When the check ring is broken, the circular truncated cone on the plug body plays a limiting role, so that the check ring can not be disengaged from the check ring groove in the shell, it is guaranteed that the plug can not be disengaged from the shell, and safety of the plug is improved.

The invention discloses a method for preparing a doped aminated graphene quantum dot high-flux solvent-resistant organic / inorganic hybrid composite film, the prepared composite film and the application of the film. The preparation method of the composite membrane comprises the step of interfacial polymerization reaction, chemical cross-linking step and solvent activation step. The invention significantly improves the separation performance and solvent resistance performance of the membrane by adding aminoated graphene quantum dots into the interface polymerization monomer solution, and shortens the membrane forming time by increasing the crosslinking and solvent activation temperature. The surface of the aminated quantum dot has a large number of amino groups, which can react with the organic phase monomer to form a strong covalent bond, which not only improves the performance of the film, but also significantly improves the stability of the quantum dot in the film. The preparation process of the invention is simple, and has good application prospects in the field of separation of organic solution systems and the field of water treatment containing organic solvents.