8results about How to "Close tightly" patented technology

This utility model discloses an auxiliary device for improving the accuracy of gas chromatography determination of N,N-dimethylformamide in water, belonging to the technical field of N,N-dimethylformamide determination. This auxiliary device includes an auxiliary mechanism and a filtration mechanism. The auxiliary mechanism includes a housing with a door hinged to one side of the upper end via a pair of hinges. A water inlet pipe is installed at the upper end of the door, and a drain pipe is installed at the center of the bottom end of the housing. A limiting frame is installed at the bottom of the housing. The filtration mechanism includes a mounting frame with a pair of equal-dividing plates fixedly installed inside. Slide rails are installed on both sides of the mounting frame at the bottom of the pair of equal-dividing plates. A filter layer and an adsorption layer are slidably installed between the two pairs of slide rails. This utility model can effectively improve the accuracy of gas chromatography determination of N,N-dimethylformamide and has high practical value.

The utility model belongs to the field of cake decoration, particularly relates to an extruder on a cake decoration 3D printer, and aims to solve the problems that in the existing cake decoration process, the interior of a placing pipe is inconvenient to clean after cream in the placing pipe is used up, the cream is not convenient to replace, the process is relatively inconvenient, the complexity is increased, and the production cost is reduced. According to the technical scheme, the device comprises a base, the top of the base is provided with an installation frame and a containing cylinder, and the containing cylinder is fixedly installed at the bottom of the installation frame through a plurality of bolts. When the device is used, cream can be squeezed out from the bottom of the placing barrel so as to meet the requirements of different mounting patterns, the interior of the placing barrel can be conveniently cleaned or the cream can be conveniently replaced, the placing barrel can be easily disassembled when necessary, the process is convenient and fast, the operation efficiency and applicability are improved, and the device is suitable for popularization and application. And meanwhile, the mounting frame and the placement barrel can conveniently move according to a preset track, so that the decoration 3D printing effect is conveniently achieved.

This application provides a container. The container includes a body, a top-hinged door, a main shaft, a lock head, a locking rod, and a shaft connector. The main shaft passes through a base frame. The lock head is rotatably connected to the base frame between a locked position and an open position. One end of the locking rod is rotatably connected to the lock head. The shaft connector is rotatably connected to the main shaft via a main shaft connecting shaft, and the shaft connector is connected to the other end of the locking rod, so that rotation of the main shaft can drive the lock head to rotate between the locked position and the open position. On a projection plane perpendicular to the axial direction of the locking rod, the projection of the locking rod and the projection of the main shaft connecting shaft at least partially overlap. Therefore, the at least partial overlap of the locking rod projection and the main shaft connecting shaft projection ensures that the connection position of the locking rod and the shaft connector is as close as possible to the main shaft connecting shaft in the vertical direction. This reduces the deformation of the locking rod when the lock head locks the top-hinged door, thereby allowing the top-hinged door to close the opening tightly and minimizing material leakage.

The invention discloses a self-discharging type liquid injection needle valve, and belongs to the technical field of lithium battery liquid injection. The self-discharging type liquid injection needle valve solves the technical problems that when an existing self-discharging type liquid injection needle valve is in a standby state, a flow channel is prone to crystallization, and sealing is not tight due to plug eccentricity. The self-discharging type liquid injection needle valve comprises a valve body assembly, a valve port assembly, a driving assembly, a diaphragm assembly and a first elastic reset piece. The diaphragm assembly is used for isolating the flow channel from the driving assembly, and a valve element piece of the diaphragm assembly is matched with the valve port assembly to control the liquid injection port. The driving assembly and the diaphragm assembly are in disconnected connection, and selective transmission of driving force is achieved. The first elastic reset piece applies elastic force for closing the liquid injection opening to the diaphragm assembly. The driving assembly and the diaphragm assembly are arranged to be of a disconnected structure, automatic closing is achieved through the elastic reset piece, runner crystallization is effectively prevented, the leakage problem caused by assembly eccentricity is solved, and the diaphragm valve has the advantages of being reliable in sealing and low in maintenance cost.

The utility model relates to road construction technical field especially relates to a kind of warm mix construction device of steel slag modified asphalt.The utility model provides a kind of warm mix construction device of steel slag modified asphalt, including base, storage frame, stirring bucket, connecting pipe and motor, base rear portion is fixedly connected with storage frame, storage frame top is fixedly connected with stirring bucket, stirring bucket is forty-five degree inclination, connecting pipe is connected and communicated between stirring bucket rear side and storage frame top, stirring bucket upper portion is fixedly connected with motor, and the output shaft of motor penetrates stirring bucket interior.The utility model realizes material automatic transfer by connecting pipe between inclined stirring bucket and lower storage frame, and in combination with first baffle and its clamping block and bayonet, so that steel slag modified asphalt after mixing can quickly enter storage frame and store temporarily, so as to avoid the problem that traditional equipment needs to stop and wait after mixing.

The application discloses an automatic door opening and closing device and a refrigerator, and relates to the technical field of the refrigerator, which comprises an upper door opening and closing device and a lower door opening and closing device, the upper door opening and closing device and the lower door opening and closing device are symmetrical along the direction perpendicular to the central axis of the door opening and closing device, and are fixedly connected through a connecting rod; the upper door opening and closing device comprises a framework, a large spring and a small spring are sleeved on the framework, the lower end of the framework is connected with a speed reducer motor through a transmission shaft, and the supporting plate of the speed reducer motor is fixed on the connecting rod. The application can realize automatic uniform-speed opening and closing of the door, has a large door opening angle, is convenient to use, saves time and effort, and has good user experience.

The utility model relates to the technical field of automobile valve manufacturing, in particular to a one-way valve and a two-way stop valve of an automobile thermal management system, which comprise a valve casing, a valve cavity arranged in the valve casing, a first annular limit retaining edge arranged in the valve cavity, a runner outlet arranged at one end of the valve cavity, and a runner inlet arranged at the other end of the valve cavity. The limiting cover is arranged at one end, corresponding to the flow channel outlet, of the valve cavity; a second annular limiting blocking edge is arranged on the periphery of the valve plug, the valve plug is movably arranged in the valve cavity and limited between the first annular limiting blocking edge and the limiting cover, the second annular limiting blocking edge is limited by the first annular limiting blocking edge in the process that the valve plug moves towards the flow channel inlet, and a sealing ring is hooped on the valve plug. The sealing ring abuts against the side, close to the first annular limiting blocking edge, of the second annular limiting blocking edge. The spring abuts against the valve plug and applies elastic force towards the inlet direction of the flow channel to the valve plug. Abnormal sound and damage caused by impact between the valve element and the valve body in the using process can be reduced.