6results about How to "Connection seal" patented technology

The utility model discloses a device for preventing temperature and humidity leakage of an incubator, which relates to the technical field of incubator accessory equipment and comprises a case, a fixed plate is fixedly arranged on one side in the case, a heater is fixedly arranged on one side in the fixed plate, the other side of the fixed plate is symmetrically communicated with air inlet pipes, and fans are rotatably arranged in the air inlet pipes; one end of the air inlet pipe communicates with the fixing frame, and a drawer is slidably arranged in the fixing frame. A flitch is hinged to the upper end face of the fixing frame, locking pieces are symmetrically and rotationally connected to the front of the flitch, embedded blocks are fixedly connected to the tail ends of the locking pieces, and embedded holes are formed in the positions, corresponding to the embedded blocks, of the lower end face of the fixing frame. A gasket is mounted at the joint of the air inlet pipe and the fixed frame; the air inlet pipes symmetrically communicate with the sides, away from the heaters, of the fixing plates. The flitch is hinged to the upper end face of the fixing frame and close to the drawer. The problems that an existing partial device used for improving the air tightness of the incubator is complex in structure and inconvenient to operate are solved.

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 present invention provides a magnetic flap level gauge for a sewage tank used in an automated control system, and relates to the technical field of magnetic flap level gauges. The magnetic flap level gauge for a sewage tank used in an automated control system has an upper base fixedly installed at the bottom of the tube body, a buffer pad fixedly installed at the bottom of the upper base, a lower base fixedly installed at the bottom of the buffer pad, a connecting seat fixedly installed at the bottom of the lower base, and a sewage pipe fixedly installed at the bottom of the connecting seat. The magnetic flap level gauge for a sewage tank used in an automated control system can weigh the sediment at the bottom of the sewage pipe by setting a gram weight meter. When the sediment reaches a certain weight, the gram weight meter initiates an alarm to prompt the sewage pipe to be cleaned, thereby realizing automated system processing of the magnetic flap level gauge. By setting a filter, the liquid in the sewage tank can be filtered to prevent larger sediment from entering the tube body, which is beneficial to improving the measurement accuracy of the magnetic flap level gauge.

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.