Automatic sand pressure-feeding device

Abstract

The invention discloses an automatic sand pressure-feeding device which comprises a sand storing tank. The upper portion of the sand storing tank is connected with a sand falling funnel, and the lowerportion of the sand storing tank is connected with a sand delivery pipeline. The automatic sand pressure-feeding device is characterized by further comprising a pneumatic pressure-feeding system which comprises an opening-closing plate arranged at a sand falling opening of the sand falling funnel, a pneumatic pressure-feeding pipe and a valve capable of controlling opening and closing of the pneumatic pressure-feeding pipe; one end of the pneumatic pressure-feeding pipe is mounted in the sand storing tank, and an air outlet of the pneumatic pressure-feeding pipe right faces the opening-closing plate; and the other end of the pneumatic pressure-feeding pipe is located outside the sand storing tank and connected with a pressure-feeding air cylinder. A traditional mode of single-time sand pouring and single-time pressure feeding is changed, the ingenious pressure-feeding structure is used for achieving circulating control over sand adding and pressure feeding, design is simple, the purposes are efficient, the traditional operation that molding sand is carried to a sand mixer manually can be replaced, and multiple types of operation can be realized through a single system. The automatic sand pressure-feeding device can be applied to sand delivery of a molding sand casting machine.

Description

technical field [0001] The invention relates to the field of molding sand casting, in particular to an automatic pressure-feeding sand feeding device. Background technique [0002] At present, in the field of foundry machinery, molding sand core-making technology is being widely used. In the core-making process, it is usually necessary to transport the molding sand to the sand mixer to mix it with phenolic resin and add it to the inside of the mold. Thus, the molding sand transportation needs a certain transportation mechanism to complete. The traditional molding sand transportation is carried out by manpower, and the heavy sand is manually moved to the shakeout port of the sand mixer, which undoubtedly increases human resources. Some enterprises adopt the form of pneumatic pressure feeding, but because this method is to pour the molding sand into a closed container for pressure feeding, it must be poured once for pressure feeding, and this complicated operation will affect...

AI Technical Summary

Problems solved by technology

The traditional molding sand transportation is carried out by manpower, and the heavy sand is manually moved to the shakeout port of the sand mixer, which undoubtedly increases human resources

Some enterprises adopt the form of air pressure feeding, but because this method is to pour the molding sand into a closed container for pressure feeding, it must be poured once for pressure feeding, and this complicated operation will affect the overall production efficiency

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