4results about How to "Guaranteed zero leakage" patented technology

A kind of quick bag sealing device and method for narrow space radioactive atmosphere isolation, including quick detachable inspection area, equipment back loading area, disassembly operation area;Wherein quick detachable inspection area, equipment back loading area, disassembly operation area all have sealing;And the top of quick detachable inspection area, equipment back loading area is equipped with crane hook reserved interface;Disassembly operation area side has PE operation glove, bottom has operation hole reserved interface.This application can significantly reduce the risk of radioactive material leakage by effective sealing mechanism, protect the operating personnel from radiation damage, while preventing radioactive aerosol from polluting the external environment.Using multiple sealing technology, including buckle and heat sealing, ensures zero leakage of radioactive atmosphere, meets strict radiation protection standards.Effective sealing and isolation measures reduce the possibility of radioactive material release into the environment, help maintain ecological safety.

The utility model relates to a plant fertilizing device, including the medicine storage jar, the top and bottom of medicine storage jar still are equipped with water inlet pipe and drain pipe respectively, the drain pipe vertically extends downward and is connected with filter piece at the bottom, and the water outlet on the lateral wall of filter piece communicates with infusion tube, and the both ends of infusion tube still are equipped with connecting seat and sealing seat respectively, and a plurality of infusion tubes are sequentially spliced into netted pipeline through connecting seat and sealing seat, and the impurity discharge port of filter piece bottom communicates with the storage box, the utility model discloses quick buckling structure through connecting seat and sealing seat, realizes the efficient splicing of infusion tube and netted pipeline building, and the flexibility and adaptability of pipeline arrangement are significantly improved, can adjust fertilizing mode according to plant type, realizes the modular configuration of 'one pipe multiuse', the splicing of the utility model has multistage sealing design, guarantees fertilizer solution zero leakage, and the design of 'diameter gradually small from outside to inside' enhances the compatibility of different pipe diameter pipelines.

The utility model discloses an EPDM (Ethylene-Propylene-Diene Monomer) screen mesh type nylon fiber clamping high-strength diaphragm for a pressure reducing valve, which comprises an upper EPDM rubber layer (1), a screen mesh type nylon fiber reinforcing layer (2) and a lower EPDM rubber layer (3) which are coaxially overlapped to form the diaphragm, and an annular external pressure water line (4) is arranged at the circumference of the working surface of the diaphragm, which is 10mm away from the circle center of the diaphragm. And an annular internal pressure waterline (5) is arranged at the circumference which is 20mm away from the circle center of the diaphragm. The utility model has the beneficial effects that: 1, the nylon fiber screen cloth disperses stress, and the tensile strength is improved by more than or equal to 150%; 2, the anti-fatigue times can reach more than 300,000 times, and the service life is 2-3 times of that of the traditional diaphragm; 3, the double-pressure waterline design ensures zero leakage of high-pressure sealing; and 4, the thickness is optimized to 1.2 mm, and both the flexibility and the pressure bearing capacity are considered.

The invention belongs to the field of hydraulic valves, and particularly relates to an ultrahigh-pressure zero-leakage adjusting cut-off emptying valve which comprises a valve body, a valve cover, a valve rod, a metal core and a metal sleeve. A cavity is formed in the upper end of the valve body, the valve cover is installed in the cavity in the upper end of the valve body, an annular cavity is formed between the valve cover and the valve body, a damping channel is formed in the valve cover, and the lower end of the valve rod is connected with the valve cover in a sealing mode after sequentially penetrating through the valve cover and the valve cover. The metal core is installed in the valve body, a damping channel is arranged in the metal core, fluid media can be subjected to three-time staged energy loss and staged adjustment when passing through the metal core and the metal sleeve, the flow speed of the fluid media is linearly decreased, the sealing performance under the ultrahigh pressure working condition is guaranteed, and meanwhile the sealing performance of the valve body is improved. And the conditions of sudden temperature drop, valve vibration, violent noise and the like caused by rapid reduction of the flow speed are avoided.