Movable type multistation suction hood

Abstract

The invention discloses a movable type multistation suction hood which comprises a suction hood and wind pipes connected with the top of the suction hood, wherein the end parts of the wind pipes are provided with valve ports; the suction hood is located right above the stations for generating smoke; a main wind pipe connected with an air draft dedusting system is arranged above the stations; the main wind pipe is communicated with short wind pipes corresponding to the stations one to one in the radial direction; the end part of each short wind pipe is provided with a switching valve matched with each valve port; a supporting mechanism is arranged below the main wind pipe; and the suction hood is connected with a suspending arm which can walk on the supporting mechanism along the length direction of the main wind pipe and can be positioned. The suction hood can move and be positioned above the multiple stations in a workshop, thus smoke and harmful particles generated by a pouring station are suctioned and discharged and the operation space of the pouring station is not occupied in suction.

Description

Technical field: [0001] The invention relates to a movable multi-station dust suction hood. Background technique: [0002] During the production process of large-scale molds, when casting and pouring the molds, when the high-temperature molten metal is poured into the sand box, the mold cores are melted and burned, producing a large amount of volatiles and smoke, which are quickly spewed and diffused upwards, and the time is about 30 Minutes, in order to ensure the quality of the workpiece, it takes nearly 24 hours to wait for the metal to solidify after pouring before hoisting the sand box and the poured workpiece away. Therefore, in the production process, each enterprise plans multiple fixed-point pouring stations. For this process For flue gas treatment during pouring, it is very important to design an exhaust hood. According to the direction of exhaust gas, it is best to install an exhaust hood on the top, but the top space above the pouring point is the hoisting positi...

AI Technical Summary

Problems solved by technology

During the production process, some lead-melting furnaces produce scum on the liquid surface, which needs to be removed; some lead-melting furnaces need to be stirred during operation; in addition, after electrolysis, the residual electrode pieces must be returned to the lead-melting pot for melting. The driving is carried out on the upper part of the lead melting pot. During this operation, the exhaust gas contains a lot of harmful substances. The main components of harmful substances are lead and lead oxides, which have a great impact on the environment.

Due to the operating characteristics and maintenance characteristics of the lead melting pot, it is not allowed to install a fixed exhaust hood for exhausting the upper part, which brings many unfavorable factors to the ventilation design. For a long time, the ventilation of the lead melting pot has become a long-standing problem in the design.

At present, the factory has carried out practice and research on the side exhaust method of the lead melting pot. Due to the large diameter of the lead melting pot and the interference of the horizontal air flow in the workshop, the exhaust air volume is required to be very large, and the use effect is not ideal.

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