109results about How to "Unblock in time" patented technology

The invention discloses a spray gun used for side blowing of an immersion combustion molten pool metallurgical furnace and a metallurgical furnace with the spray gun. The spray gun comprises an outer spray pipe, an inserting and connecting automatically-locking part, an inner spray pipe and a blocking part. The outer spray pipe is provided with an oxidant gas inlet, an oxidant gas outlet and an inserting opening. The inserting and connecting automatically-locking part has an automatic locking and closing function and is installed at the position of the inserting opening of the outer spray pipe. The inner spray pipe is provided with a medium inlet, a medium spray opening and a medium cleaning opening. The inner spray pipe is detachably inserted in and connected to the inserting and connecting automatically-locking part. The end, provided with the medium spray opening, of the inner spray pipe stretches into the outer spray pipe through the inserting opening, and when the inner spray pipe is disengaged from the inserting and connecting automatically-locking part, the inserting and connecting automatically-locking part is locked automatically and closed so as to block the inserting opening. The blocking part is installed on the inner spray pipe so as to open or close the medium cleaning opening. The spray gun can be used for conveniently removing coal dust blocked in the inner spray pipe so that the inner spray pipe can be dredged in time, the liquid level of a molten pool does not need to be lowered when the inner spray pipe is demounted and maintained, it is effectively ensured that the metallurgical furnace normally runs, and the productivity is increased.

The invention discloses a novel floor drain; a liquid level sensor is arranged on the inner sidewall of a drain basket; the liquid level sensor is used for detecting whether the floor drain can achieve drainage; a water stopper is used for plugging a water seal main body, so that the emission of odor in a sewer pipe is prevented; and when the liquid level sensor detects the drainage, the water seal main body is opened by the water stopper and water is discharged into the sewer pipe. With the adoption of the structures, the interior of the water seal main body of the floor drain is simple, and the drainage speed of the floor drain is not affected, so that smooth drainage of the floor drain is guaranteed.

The invention discloses a steam circulation system, comprising a boiler and steam utilization equipment communicated with the steam outlet of the boiler. The steam circulation system also comprises a return tube of which one end is communicated with the steam outlet of the steam utilization equipment, and a pumping device communicated with the other end of the return tube. The outlet of the pumping device is communicated with the inlet of the boiler. High-temperature steam in the boiler enters the steam utilization equipment to be utilized, and then is guided into the pumping device through the return tube, steam is pressurized by the pumping device, so that the steam can be conveyed into the boiler. Therefore heat energy contained in the steam of exhaust gas can return to the boiler, and the waste of energy is avoided, so that the problem that the steam energy utilization rate of the steam circulation system is relatively low can be effectively solved.