4results about How to "Reliable sealed connection" patented technology

This invention relates to the field of brine purification technology in the salt production industry, and discloses a silicon carbide flat-sheet membrane brine purification system and process for the salt production industry. The invention uses a modular silicon carbide flat-sheet membrane filtration unit as its core, combined with a minimalist pretreatment feeding unit. Through the modular collaborative design of an open-top membrane tank shell at atmospheric pressure, a detachable stackable membrane tower, a negative pressure water production component, an array-type aeration component, and a refined brine backwashing component, it achieves negative pressure suction filtration with the membrane tower completely submerged in the crude brine, directly treating crude brine containing calcium and magnesium precipitates without the need for pre-filtering and circulation equipment. The modular design of each component in this system allows for easy assembly and disassembly, high filtration accuracy, low energy consumption, strong anti-fouling properties, and stable production of calcium and magnesium precipitates. 2+ +Mg 2+ The refined brine with ≤1ppm and SS≤1ppm has significant advantages over traditional ceramic membrane systems in terms of equipment investment, operating costs, membrane life and industrial adaptability. It can be widely used in brine refining in the salt industry and brine refining in chlor-alkali systems.

The utility model discloses a ventilation pipe for tunnel construction, and relates to the technical field of ventilation pipes. The connecting mechanism is arranged between the two sets of ventilation pipelines, and the two sets of ventilation pipelines are fixedly connected through the connecting mechanism, so that the stability and convenience during installation are ensured; the multiple adjusting assemblies are arranged on the circumferential outer wall of the connecting mechanism and matched with the connecting mechanism, and the inner wall of the ventilation pipeline is fixed through the adjusting assemblies so as to ensure the stability of the pipeline; and the sealing rings are symmetrically arranged at the two ends of the connecting mechanism, and the connecting mechanism and the ventilation pipeline are connected in a sealed mode through the sealing rings, so that the sealing performance of the pipeline is guaranteed. The connecting mechanism is reasonable and reliable in structure, the ventilation pipeline can be quickly fixed, the mounting distance of the connecting mechanism is reasonably arranged according to the length of the ventilation pipeline, the stability and the bearing capacity of the whole structure are ensured, and the safety and the convenience of mounting are improved.

The utility model relates to an upright lockrand piece and waterproof roof.The upright lockrand piece comprises a fixing support and a clamping hoop, the fixing support comprises a connecting part and an upright part which are connected with each other, and the clamping hoop is connected to the outer side of the upright part in a clamped mode; and an accommodating gap for accommodating an overlapping area at the connecting edge of the two waterproof coiled materials is reserved between the inner side surface of the clamping hoop and the upright part. According to the vertical edge locking piece for lap joint edge locking of the waterproof coiled materials, the fixing support and the clamping hoop are arranged, the fixing support can be connected to a roof through the connecting part, the edge connecting positions of the two adjacent waterproof coiled materials are overlapped and then clamped on the vertical part of the fixing support, the edge connecting positions of the two adjacent waterproof coiled materials are effectively sealed, and the waterproof effect is good; in addition, a plurality of drainage areas separated by a plurality of groups of vertical lockrand pieces which are longitudinally arranged can be formed on the roof, and effective drainage of the roof is facilitated.

The utility model provides a direct insertion type agricultural irrigation water hose which comprises a main pipe body and a plurality of diversion through holes which are formed in the axial direction of the main pipe body at intervals and penetrate through the main pipe body, and branch connecting assemblies are arranged at the diversion through holes. The branch connecting assembly comprises a connecting base and a branch water pipe connecting piece. The connecting base is provided with a central through hole communicated with an internal channel of the main pipe body, and the branch water pipe connecting piece is in pressure self-tightening type detachable inserting connection with the connecting base through a conical interference fit interface; the connecting base comprises a lap joint block fixedly connected with the inner wall of the main pipe body and a butt joint part penetrating through the diversion through hole and extending to the outer side of the main pipe body, and the butt joint part forms a conical matching structure matched with the branch water pipe connecting piece; the branch water pipe connecting piece is provided with a penetrating type flow channel, and the penetrating type flow channel, an inner channel of the main pipe body and a central through hole of the base unit jointly form a continuous unobstructed fluid channel. The branch water pipe connector is convenient to use, and rapid and reliable sealing connection between the branch water pipe connector and the connecting base can be achieved without too large insertion and extraction force.