34results about How to "Not easy to protect" patented technology

The application relates to a load sensitive multi-way valve, which belongs to the technical field of engineering vehicles. It includes an oil inlet valve body assembly, a reversing valve body assembly and an oil return valve body assembly. There are multiple reversing valve body assemblies, and multiple reversing valve body assemblies are arranged in parallel. The oil inlet valve body assembly It includes an oil inlet valve body, the reversing valve body assembly includes a reversing valve body, the oil return valve body assembly includes an oil return valve body, and the oil inlet valve body is provided with a main oil inlet pipeline and a main oil return pipeline, The oil return valve body is provided with an auxiliary oil inlet pipeline and an auxiliary oil return pipeline, and the main oil inlet pipeline and the auxiliary oil inlet pipeline communicate with the reversing valve body and supply the reversing valve body assembly. Oil, the main oil return pipeline and the auxiliary oil return pipeline communicate with the reversing valve body and return oil to the reversing valve body assembly. This application has the effect of more stable oil in and out.

The invention discloses a protective sliding door used for steel slag treatment, comprising a track, and a moving and travelling device which is matched with the track, wherein the moving and travelling device is hung on the track, and a door beam provided with a flexible door is fixed on the moving and travelling device. When high-temperature steel slag splashes in a workshop, splashed slag firstly collides with a hinged flap, the impact of the splashed slag can be relieved as the hung hinged flap is flexible so as not to cause secondary splashing, and simultaneously the hinged flap has resistance to high-temperature splashed slag, thus being not easy to damage; after air flow such as smoke dust, steam and the like passes through a chain layer, the air flow is blocked by a rubber door layer and can not overflow from the workshop, so as to realize environmental protection; as the hinged flap and the rubber door are fixed in a hanging way, and both have certain flexibility, when the instant impact of the air flow is caused by rushing, slashing, explosion and the like, the flexible hinged flap and the rubber door can effectively relieve and absorb the impact kinetic energy of the air flow, and also can be automatically uncovered by the air flow when the impact pressure is over-high, thus realizing fast explosive venting, and avoiding the damage to the closed workshop.

The invention relates to a method for removing arsenic and antimony in the copper matte converter blowing process, belonging to the technical field of copper smelting. In the first cycle of copper matte converter blowing, white matte is obtained according to conventional operations. In the second cycle, white matte and cold material are blown into blister copper by adding sodium sulfate to form slag and remove arsenic and antimony. The total amount of sodium sulfate added is the furnace charge 1%~3% of the mass of copper in the interior metal. This method implements synchronous removal of arsenic and antimony during the second cycle of copper-making in converter blowing, hardly increases equipment, does not change the blowing system, and does not increase energy consumption significantly; when the end of the copper-making period reaches the end of the copper-making period, no special discharge of arsenic and antimony slag is required , with the blister copper into the next process for oxidation and refining, without reducing the direct yield of copper blowing.

The invention relates to a fast positioning and disassembling device for testing the mechanical performance of an optical cable. The fast positioning and disassembling device comprises an upper clamping plate, a lower clamping plate, a clamping plate connecting shaft pin, a sleeve for clamping the optical cable, an automatic electromagnetic opening and closing device and a self-locking device, wherein the automatic electromagnetic opening and closing device comprises an electromagnet, a permanent magnet, an electromagnet sleeve and a cover plate; the self-locking device comprises a clamping hook, springs and a locking tongue; the sleeve is divided into an upper semicircular sleeve and a lower semicircular sleeve; the upper clamping plate is rotatably connected with the lower clamping plate by the clamping plate connecting shaft pin; the upper semicircular sleeve is connected with the upper clamping plate in a detachable manner; the lower semicircular sleeve is connected with the lower clamping plate in a detachable manner; the cover plate is positioned in the upper clamping plate; the electromagnet is fixed in the electromagnet sleeve which is fixed in the upper clamping plate by the cover plate; the permanent magnet is fixed in the lower clamping plate; the clamping hook is fixed in the upper clamping plate; the locking tongue is positioned in the lower clamping plate; and the springs are positioned at the two sides of the locking tongue. The fast positioning and disassembling device provided by the invention has the advantages that the optical cable is effectively protected, the working efficiency is high and the safety is high.

The invention provides an assembled transformer foundation structure and a construction method thereof, including an oil pool foundation pit, a base plate is arranged in the oil pool foundation pit, a prefabricated oil pool side wall is installed on the side of the oil pool foundation pit, and a prefabricated oil pool side wall is installed on the base plate. The well-shaped bottom plate, the prefabricated inverted T-shaped main variable bar base is installed in the well-shaped bottom plate, and the base connecting beam is installed on the top of the prefabricated inverted T-shaped main variable bar base; the present invention utilizes the prefabricated inverted T-shaped main variable bar base to reduce The amount of concrete is used to realize prefabricated construction, which can be applied to the needs of different main transformer equipment. There are fewer wet operations on site, fewer construction procedures, and the aesthetics of the main transformer foundation completed by the overall construction is greatly improved, and the construction quality is easy to control.

The invention discloses an installation method for a blast furnace bottom water cooling beam and a blast furnace bottom water cooling pipe. According to the installation method, field construction processes are reduced, and the installation quality is improved. The installation method includes the steps that firstly, a furnace bottom water cooling beam and water cooling pipe assembling body is totally cut into five splicing blocks according to a design drawing; secondly, the five splicing blocks are produced in a factory; thirdly, the five splicing blocks are generally assembled on a factor splicing platform, and an installation coordinate system and a blast furnace center are marked on the furnace bottom water cooling beam and the furnace bottom water cooling pipe which are assembled; fourthly, a part is transported to the field; fifthly, the installation coordinate system and the blast furnace center of the furnace bottom water cooling beam and the furnace bottom water cooling pipe are discharged out on a blast furnace foundation bearing table through a total station; sixthly, the first splicing block, the second splicing blocks and the third splicing blocks are sequentially installed and spliced; and seventhly, after various items of installation sizes are checked to be qualified, welding is conducted. By the adoption of the installation method for the blast furnace bottom water cooling beam and the blast furnace bottom water cooling pipe, field construction process links are few, and safety and reliability are achieved; the installation precision is high, and quality is good; and the installation time is short, and the construction period is shortened.

The invention relates to a high-elasticity impact-resistant corrugated cardboard which comprises an outer surface paper layer, a corrugated paper core and a bottom surface paper layer, wherein the corrugated paper core is a regular pentagonal corrugated paper core, and the regular pentagonal corrugated paper core is bonded with the lower surface of the outer surface paper layer and the upper surface of the bottom surface paper layer. The high-elasticity impact-resistant corrugated cardboard has the advantages of good shock resistance, good impact resistance and high peeling strength, and is conductive to saving resources and protecting environment.

The invention belongs to the technical field of connectors, in particular to a photoelectric conversion connector, which includes a No. 1 connection terminal, a No. 2 connection terminal and a connection wire. The No. 1 connection terminal and the No. 2 connection terminal are fixedly connected through the connection wire. The outside of the No. 1 connection end and the No. 2 connection end are covered with a protective sleeve. The upper end of the protective sleeve is located outside the connecting line and a threaded sleeve is provided. The threaded sleeve is fixedly connected with the connecting line, and the threaded sleeve and the protective sleeve are screwed together. , the upper end of the threaded sleeve is located on the outside of the connecting line, and the anti-bending sleeve is fixed on the outside of the anti-bending sleeve, and several anti-bending bars are fixed on the outside of the anti-bending sleeve. The harness barrel is fixed, and the harness barrel is connected with the connecting wire. The harness ring is fixed in the middle of the upper end of the pull ring. When in use, the No. 1 connection end and the No. 2 connection end are wrapped and protected by the protective sleeve. , Simple operation and convenient use.