Resin quantitative replacement device

Abstract

The invention provides a resin quantitative replacement device which comprises a speed regulating motor, a plunger pump and a replacement tank, wherein a rubber bag is arranged in the replacement tank, the upper end of the replacement tank is provided with a feeding pipe which extends into the rubber bag, a valve is arranged on the feeding pipe, the upper side wall of the replacement tank is provided with an oil filling hole, the side wall of the replacement tank is provided with an upper oil drain pipe and a lower oil drain pipe, valves are arranged on the oil drain pipes, the bottom of the rubber bag is provided with a resin output hole, the speed regulating motor is connected with the plunger pump by a crank, an oil filling hole of the plunger pump is connected with a hydraulic oil tank, and an oil outlet of the plunger pump is connected with the oil filling hole of the replacement tank. The invention outputs the resin by a hydraulic oil extruding method and can realize the quantitative replacement of hydraulic oil with the resin, the resin does not in direct contact with the pump, which radically avoid the damage of the pump by the resin, the pump can stably operate and does not need to be cleaned and maintained, the resin output flow is not influenced by environmental temperature to ensure the stable resin output flow, and meanwhile, the seal type resin output is adopted to prevent resin oxygenation.

Description

Technical field [0001] The invention relates to a device for quantitatively adding resin in casting production, and belongs to the technical field of resin quantitative adding devices in casting machinery. Background technique [0002] For the preparation of resin sand in casting production, the use of a cage-type continuous sand mixer is much better than a disc-type one-time-feed sand mixer. One is that energy consumption is reduced by half, the other is that it is environmentally friendly, and the third is that waste is less discharged. (The amount of cleaning residual sand is small). At present, various pumps are used to directly add resin to the mixing cage type continuous sand mixer. The problem with this method is that because the viscosity of the resin is different at different temperatures, the working process will be affected by the ambient temperature. Changes and the entry of impurities lead to changes in the resin flow rate, which cannot guarantee the stability of th...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of unstable resin addition due to environmental temperature changes in existing casting production, the invention provides a resin quantitative replacement device with stable resin addition and not affected by ambient temperature

Images