Quantitative conveying mechanism and catalysis degreasing furnace

Abstract

The invention relates to the field of automatic devices, and discloses a quantitative conveying mechanism and a catalysis degreasing furnace. The quantitative conveying mechanism comprises a feed plate, a top plate and a bottom plate, wherein the top plate and the bottom plate are arranged on the upper side and the lower side of the feed plate correspondingly. Feed grooves are formed in the feed plate. A feed port is formed in the top plate. A discharge port is formed in the bottom plate. The feed plate can move relative to the top plate and the bottom plate. When each feed groove passes by the feed port, materials enter the feed groove from the feed port and make the feed groove full filled with the materials, and when each feed groove passes by the discharge port, the materials in the feed groove are discharged through the discharge port. According to the quantitative conveying mechanism and the catalysis degreasing furnace, by means of reciprocating of the feed plate, provided with the fixed-volume feed grooves, between the feed port and the discharge port, quantitative conveying of the materials can be achieved, no complex control systems or automatic mechanisms need to be used, and therefore the production and maintenance cost of the device is greatly reduced; and meanwhile, conveying of oxalic acid is achieved through the mechanical structure, compressed air does not need to be used as power, and therefore safety accidents can be effectively avoided.

Description

technical field [0001] The invention relates to the field of automation equipment, in particular to a conveying mechanism and a catalytic degreasing furnace using the conveying mechanism. Background technique [0002] The process of metal / ceramic powder injection molding includes the step of using metal powder and binder to form a green body. The green body needs to remove the binder (catalytic degreasing) before sintering to obtain a complete metal phase. The removal of the adhesive in the traditional process requires the use of nitric acid as a catalyst. However, nitric acid has some disadvantages as a catalyst. For example, nitric acid is highly corrosive, and it is easy to damage the human body during use. There are potential safety hazards. It is easy to cause surface oxidation of the workpiece; in addition, nitric acid will also produce a large amount of nitrogen oxides during the catalytic process, thereby causing environmental pollution. Based on the above problems,...

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Problems solved by technology

The removal of the adhesive in the traditional process requires the use of nitric acid as a catalyst. However, nitric acid has some disadvantages as a catalyst. For example, nitric acid is highly corrosive, and it is easy to damage the human body during use. There are potential safety hazards. It is easy to cause surface oxidation of the workpiece; in addition, nitric acid will also produce a large amount of nitrogen oxides during the catalytic process, thereby causing environmental pollution

Based on the above problems, people have developed a process using oxalic acid as a catalyst. However, oxalic acid is solid at room temperature, and traditional liquid material feeding mechanisms such as plunger pumps are difficult to apply, while most of the traditional solid feeding mechanisms use compression. It is difficult to realize the quantitative delivery of oxalic acid in this scheme, and the inflow of air during the catalytic degreasing process will cause serious safety accidents; in addition, there are complex control systems and automatic mechanisms in the prior art to achieve quantitative delivery. The solid feeding mechanism for conveying, however, this kind of scheme has a complex structure, high production and maintenance costs, and is not conducive to improving the market competitiveness of products

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