6results about How to "Avoid direct erosion" patented technology

This application discloses a graphite heat exchanger. By installing an impact-resistant plate on the side of the graphite block facing the feed inlet, the material entering the heat exchanger from the feed inlet first impacts the impact-resistant plate. After being buffered by the impact-resistant plate, the material then enters the heat exchange holes of the graphite block through the through holes. This avoids direct erosion of the graphite block by the material, thereby extending the service life of the equipment. Furthermore, because the end cap and lower cylinder are detachably connected, the graphite heat exchanger adopts a segmented design, with the end cap and lower cylinder separated. This facilitates easy installation and removal, allowing for periodic removal of the end cap to clean all heat exchange holes. This prevents localized blockage of heat exchange holes caused by prolonged operation, which would prevent uneven material flow through the heat exchanger and lead to material concentrating in only a few heat exchange holes, accelerating erosion and perforation of those holes. This also facilitates inspection and maintenance.

The present application relates to the technical fields of metallurgical equipment, and discloses a sealing device for a super-high power electric furnace cover and a mounting method. The device comprises a cover body and a furnace flange, and a composite sealing mechanism and a guiding alignment mechanism are arranged at the joint position of the cover body and the furnace flange. A precision adjustment mechanism is arranged around the outer edge of the cover body. The guiding alignment mechanism comprises guiding protrusions and limiting grooves. The guiding protrusions are discontinuously distributed along the circumferential direction of the cover body. The limiting grooves are provided on the furnace flange. The guiding protrusions are inserted into the limiting grooves. A heat expansion compensation gap is reserved between the side wall of the guiding protrusion and the inner wall of the limiting groove. A positioning pin is arranged on the limiting groove. A positioning pin hole matched with the positioning pin is provided at the bottom of the guiding protrusion. The present application realizes accurate assembly of the cover body by means of the guiding structure. The reserved gap is suitable for high-temperature deformation. The disadvantages of manual alignment and misalignment are avoided. The sealing and joint effect is stable.

The utility model relates to a carbon steel coated stirring shaft which comprises a shaft head shaft core, a connecting assembly penetrating through the upper end and the lower end of the shaft head shaft core, a main shaft core mounted on the upper portion of the outer side of the shaft head shaft core, a main shaft coating layer mounted on the side wall of the main shaft core, and an end coating layer mounted at the bottom end of the main shaft core. The connecting assembly comprises an inserting column, a circular truncated cone is arranged on the inner side of the inserting column, a first threaded rod is fixedly connected to the bottom end of the circular truncated cone, the first threaded rod is in threaded connection with the shaft head shaft core, a prism block is fixedly connected to the bottom end of the first threaded rod, and three inserting blocks are installed on the side wall of the inserting column in a penetrating mode. The end, close to the circular truncated cone body, of the inserting block is provided with an inclined face attached to the side edge of the circular truncated cone body, and the side edge of the inserting column is fixedly connected with a positioning strip.

The utility model relates to a drainage pipe technical field especially a reinforced polypropylene mould pressing drainage pipe with anticorrosive function, including the pipe body, the pipe body includes the reinforced polypropylene drainage pipe, anticorrosive layer and protective layer that set up in turn from inside to outside, the outside of reinforced polypropylene drainage pipe is connected with anticorrosive layer and protective layer in turn through hot melting, anticorrosive layer is made of ethylene propylene rubber material, protective layer is made of high density polyethylene material, one end of pipe body is provided with annular connecting groove, the other end of pipe body is provided with annular connecting boss, the outside of annular connecting boss is provided with first sealing groove, the inside of annular connecting boss is provided with second sealing groove, the utility model discloses reinforced polypropylene drainage pipe guarantees the basic strength and drainage function of pipeline, the anticorrosive layer made of ethylene propylene rubber can effectively isolate the corrosion medium in the soil, the protective layer made of high density polyethylene further enhances the overall protection effect, effectively solved the problem that the existing drainage pipe anticorrosive performance is insufficient.

The invention provides a vibration isolation structure for a dry-type transformer. The vibration isolation structure comprises a base fixedly installed at the bottom of the dry-type transformer. A plurality of damping supporting seats are mounted on the base, and the bottom of an iron core of the dry-type transformer is attached to the top surfaces of the damping supporting seats; a damping isolation mechanism is installed at the bottom of the base and comprises a telescopic protection assembly and a damping part arranged in the telescopic protection assembly. A ventilation opening is formed in the bottom of the telescopic protection assembly, and a dustproof net is installed in the ventilation opening in an embedded mode. The damping isolation mechanism is arranged on the base, the damping supporting seat is arranged on the iron core, damping can be directly provided for the iron core through the damping supporting seat, and the damping isolation effect is guaranteed; and through the arrangement of the telescopic protection assembly, surrounding type protection can be provided for the damping part, and the damping part is prevented from being damaged by dust and rainwater in the external environment.

The utility model relates to fluid control equipment technical field, concretely is a kind of one-way rotation closed pressure control valve, including valve body, still including the A interface and B interface being communicated with valve body respectively, A interface is communicated with valve body lower end, B interface is communicated with valve body side portion, valve body is provided with valve seat, and valve seat is opened with valve port, and valve port is provided with the valve core that can be blocked to it, valve core only allows fluid to flow from A interface to B interface direction, valve core can be moved up and down relative to valve body, while moving up and down in valve body, valve core can occur rotational movement. The utility model adopts the above structure, can be applicable to oilfield various application scenarios, and adopt the mode of rotation closed, avoid the impact when valve core closes valve port, to avoid the deformation caused by closing not tight.