6results about How to "Prevent affecting the sealing effect" patented technology

This application provides a dual-piston valve and its assembly method, including a valve body and a piston assembly. The valve body has a first valve port and a second valve port distributed axially. The piston assembly includes a spindle and two pistons connected to the spindle. The spindle can move axially to drive one piston to block the first valve port or drive the other piston to block the second valve port. The piston assembly also includes a first spring and a second spring. The first spring can press against the corresponding piston to block the first valve port, and the second spring can press against the corresponding piston to block the second valve port. At least one piston is equipped with an elastic sealing part and a spring seat. The elastic sealing part is arranged around the spindle and is compressed axially between the spring seat and the piston, and radially between the spindle and the piston. The first spring and the second spring press against the corresponding spring seat axially. The positioning of the elastic sealing part between the spindle and the piston of this dual-piston valve is relatively reliable and the assembly is simple.

The utility model provides a false tooth processing, polishing and dust collecting device, which relates to the technical field of false tooth processing, and comprises a casing, a fixed cylinder, a filter element, a dust collecting pipe and a dust collecting box, the fixing cylinder is arranged on the machine shell, the air channel is arranged at the top of the fixing cylinder, the bottom end of the fixing cylinder is open, and a first sealing piece is arranged on the side edge of the bottom opening. The fixed cylinder and the filter element are connected with the air duct, so that gas entering the air duct is filtered, dust is blocked, the dust is stored in the dust collection box under the action of gravity, the dust collection box is sealed with the fixed cylinder through the first sealing element and the second sealing element, and the dust cannot escape; dust can be directly cleaned by dismounting the inserted dust collection box, and the arrangement of the first sealing element and the second sealing element does not hinder the mounting and dismounting of the dust collection box, so that the cleaning operation is more convenient.

The utility model relates to the technical field of bagging machine sealing structures, in particular to a bagging machine bag opening automatic sealing structure which comprises a sealing strip arranged at the top end of a machine body, a fixing strip is fixedly installed at the top of the sealing strip, and through the arrangement of a movable assembly, when a long plate slides downwards, a pressing plate can abut against the top end of a bagging bag. A pressing plate and a movable shaft are driven to slide upwards through reverse abutting force, when the movable shaft slides upwards, an inserting rod is driven to slide on the surface of a rotating shaft, so that the rotating shaft is driven to rotate, and when the rotating shaft rotates, a bottom threaded rod is driven to rotate; when the threaded rod rotates, a sliding plate on the surface can be driven to slide downwards and abut against a movable plate to drive a sliding block to move away from the center point of a connecting strip, so that the sliding block smooths the surface of the bag, and the situation that the sealing effect is affected due to the fact that an opening of the bag is wrinkled and unsmooth when the bag is sealed is prevented; the sealing tightness of the opening of the bag is improved, and the sealing quality is guaranteed.

The utility model provides a refrigerator disinfection cabinet sealing strip quick replacement structure, and relates to the technical field of refrigerator disinfection cabinet sealing strip quick replacement, the refrigerator disinfection cabinet sealing strip quick replacement structure comprises a box body, the surface of the box body is rotatably connected with a box door, the surface of the box door is provided with a sealing strip mounting groove, and the interior of the box door is slidably connected with a sliding plate. Through arrangement of the box body, the box door, the sealing strip mounting groove, the sliding plate, the sliding groove, a telescopic rod, a sliding block, a triangular block, a square groove, a spring B and a trapezoidal block B, an old sealing strip can be tilted in the sealing strip mounting groove, so that the trapezoidal block A is conveniently inserted into a gap between the sealing strip and the sealing strip mounting groove in a sliding manner, and the sliding block can be quickly disassembled by sliding; a new sealing strip can be clamped among the extrusion roller, the trapezoidal block A and the sealing strip mounting groove through the arranged sliding block, the trapezoidal block A, the extrusion roller, the spring A, the fixed rod and the limiting disc A, and the sealing strip can be quickly mounted in the sealing strip mounting groove by sliding the sliding plate.

The utility model relates to U type folding cup cover technical field discloses a U type folding cup cover structure, including U type folding cup cover, the top of U type folding cup cover is provided with sealing groove, the top of U type folding cup cover is provided with sealing clamping groove, the top fixedly connected with positioning clamping frame of U type folding cup cover, the inside of U type folding cup cover is provided with through groove, the rear end fixedly connected with folding belt of U type folding cup cover. The utility model discloses through setting up the sealing groove and the sealing folding board plug-in cooperation of U type folding cup cover top setting, forms the first line of defense, through setting up the synchronous insertion connection clamping frame and main sealing plug in sealing clamping groove, constitutes second heavy sealing barrier, through the vice sealing plug in through groove as third layer supplementary sealing, especially for liquid splashing scene provides additional protection, through the sealing piece of different position synergy effect, effectively puts an end to liquid from the crack seepage, has increased the sealing property and stability after the connection between cup cover.

This invention discloses a precise sealing device and its method based on phase transformation. The device includes an integrated sealing and extraction component, a water injection pipe, a water return pipe, a water injection tank, and a pre-extraction pipe. The integrated sealing and extraction component mainly includes an injection / extraction pipe, a cooling network pipe, a plugging component, an auxiliary support, a power component, and a control component. Under the centralized control of the control component, the plugging component is first sent to the appropriate sealing position via the auxiliary support. Then, the adjusting column systematically supports the arc-shaped plugging plate to complete the isolation of the sealing area. Next, the power station continuously supplies cold air to the cooling network pipe, causing the sealing water to solidify and completing the sealing of the pre-extraction hole. After the gas field extraction is completed, the solid water from the plugging is allowed to liquefy and be discharged. Finally, the integrated sealing and extraction component is retrieved. This device achieves precise positioning and isolation of the borehole and retrieval of the sealing device, providing a new approach for the visualization of extraction operations.