4results about How to "Connection seal" patented technology

According to the special-shaped large-diameter low-vacuum split type expansion joint and the connecting structure, the expansion joint comprises the corrugated pipe center support, the first corrugated pipe, the second corrugated pipe, the first special-shaped annular plate, the second special-shaped annular plate and the multiple connecting assemblies, so that the expansion joint can be connected with special-shaped pipelines on the two sides in a sealed and stable mode; therefore, the overall mechanical property and attractiveness of the large and long pipeline in a low-vacuum environment are ensured; meanwhile, the expansion joint can be designed to be of a split structure, on one hand, manufacturing, loading, unloading, transportation and installation in a factory are facilitated, and on the other hand, on the premise that the sealing performance of the expansion joint is guaranteed, the transverse and vertical displacement flexibility of the expansion joint is improved; the structure, the principle and the like of the expansion joint can be widely applied to design and manufacturing of expansion joints with any section size, and compared with a traditional integrated expansion joint, the expansion joint is simple in structure, convenient to machine and manufacture and low in machining cost.

This utility model discloses a vacuuming device for a floor scrubber, including a floor scrubber body. A suction tube is connected to the outer wall of the floor scrubber body. A connecting tube is connected to the end of the suction tube away from the floor scrubber body. A suction squeegee is connected to the end of the connecting tube. A processing component is disposed outside the suction squeegee. When cleaning the floor is required, the suction tube is connected to the suction squeegee, and the suction tube is inserted into the connecting tube. The inclined surface of the hook end contacts and presses against the inclined surface of the retaining ring, causing the hook to deflect around the hinge point with the fixed block as the rotation center. The side of the hook away from the inclined surface contacts the side of the retaining ring away from the inclined surface. When the hook and retaining ring are no longer pressed, the hook and retaining ring are engaged under the action of the spring elasticity. The sealing gasket fixedly installed at the end of the suction tube contacts and presses against the inner bottom surface of the connecting tube. Under the restriction of the engagement of the hook and retaining ring, the sealing gasket is compressed, sealing the connection between the suction tube and the connecting tube.

The utility model discloses a corrosion-resistant cracking-resistant heat exchange device, relates to the technical field of heat exchange devices, and provides the following scheme that the corrosion-resistant cracking-resistant heat exchange device comprises a heat exchange box and a buckle mechanism arranged outside the heat exchange box, the buckle mechanism comprises a working assembly and a buckle assembly, and the working assembly comprises a first fixing plate; a first fixing plate is fixedly connected to the outer wall of the heat exchange box, a threaded column is arranged and inserted into sliding grooves formed in the first fixing plate and a second fixing plate, a clamping block makes contact with the inner wall of the first fixing plate and the inner wall of the second fixing plate, the clamping block is shrunk into the groove formed in the threaded column, the clamping block is ejected out of the formed groove through a spring, and therefore the heat exchange box is fixed. The top of a clamping block clamps the bottom of a first fixing plate, then a holding rod is manually rotated to enable a threaded ring to rotate on the outer wall of a threaded column, the bottom of the threaded ring drives a second fixing plate to press downwards, connection between the heat exchange box and a sealing plate is more sealed, the purpose of quick disassembly and maintenance can be achieved, and impurity treatment on the inner wall of the heat exchange box is facilitated.

The utility model relates to the technical field of refrigerator defrosting water drainage, in particular to a drainage assembly and a refrigerator. The drainage assembly comprises a drainage pipe, a water pan and a connecting pipe, the drainage pipe is used for being connected and sealed with a refrigerator inner container, and defrosting water in the refrigerator inner container can be drained through the drainage pipe; the water receiving disc is used for receiving externally-discharged defrosting water, a fixing pipe is arranged on the water receiving disc, and a water discharging opening is formed in the fixing pipe; the connecting pipe is connected and sealed with the drainage pipe, the connecting pipe is provided with a water storage part and an inserting part, the inserting part is contained in the fixing pipe and is in clearance fit with the pipe wall of the fixing pipe so as to form a water seal cavity, and the water seal cavity is formed in the lower position of the drainage port in the vertical direction and is communicated with the drainage port. Through the arrangement of a water sealing structure, discharging of defrosting water can be guaranteed, internal and external air pressure can be balanced, and external humid and hot air can be effectively blocked.