Resin II injection method and device for reducing valve jamming

A technology of injection device and valve, which is applied in the cleaning/processing machinery of casting materials, casting molding equipment, casting molds, etc., can solve the problems of valve stuck, prevent hardening, reduce the risk of stuck, shorten the The effect of hourglass time

Pending Publication Date: 2021-01-26
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved in the present invention is aimed at the deficiencies of the prior art. The first purpose is to provide a resin II injection method that reduces valve jamming and solves the problem that valves are prone to jamming
[0004] The second purpose is to provide a resin Ⅱ injection device that reduces valve jamming, which solves the problem that valves are prone to jamming

Method used

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  • Resin II injection method and device for reducing valve jamming

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Embodiment Construction

[0018] Below in conjunction with embodiment, the present invention is further described, but does not constitute any restriction to the present invention, anyone makes the limited number of amendments in the scope of claims of the present invention, still within the scope of claims of the present invention.

[0019] The present invention relates to a resin II injection method for reducing valve jamming. The method is to inject the resin II out of the valve into the injection pipeline connected with the roller sand machine after passing through a curved pipeline. Among them, the valve is a pneumatic ball valve. By bending the resin II in the pipe to immerse the valve, it is avoided that the resin II adhering to the valve meets the moisture in the air, effectively reducing the risk of the valve being stuck. A blowing device is installed at the end of the curved pipe. After the resin II is injected, the injection pipe is blown to reduce the resin II attached to the injection pipe...

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Abstract

The invention discloses a resin II injection method for reducing valve jamming, relates to the technical field of resin II injection equipment, and solves the technical problem that a valve is easy tojam. The method comprises the following steps: enabling resin II from the valve to pass through a bent pipeline, and then injecting the resin II into an injection pipeline communicating with a rollersand machine. The invention further discloses a resin II injection device for reducing valve jamming. The method and the device can effectively reduce the risk of valve jamming, reduce the wall-sticking resin II, and prevent the resin II from hardening, thereby effectively reducing the risk of blockage of the injection pipeline.

Description

technical field [0001] The invention relates to the technical field of resin II injection equipment, more specifically, it relates to a resin II injection method and device for reducing valve jamming. Background technique [0002] The cold box method is a high-efficiency core-making process. Compared with the hot box method and the shell core method, it has the advantages of high efficiency, energy saving, and good working conditions. It has been widely used in foundry production. Among them, the most commonly used binders used in the triethylamine method are resin I (phenolic resin) and resin II (polyisocyanate mixture). Among them, resin II is very easy to react with water, the viscosity increases, and insoluble ureas are formed. The existing cold box roller sand machine resin II injection system generally uses a pneumatic diaphragm valve or a pneumatic angle seat valve as the valve of the injection pipeline, and a straight pipe behind the valve directly leads into the ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/10B22C5/04
CPCB22C5/0409B22C9/10
Inventor 周栋夫李焕昌刘科樟秦昌林俞上剑周士凯
Owner GUANGXI YUCHAI MASCH CO LTD
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