Double-helix and double-stirring reaction device for producing water-proof coating

Abstract

The invention relates to the technical field of water-proof coating production devices, in particular to a double-helix and double-stirring reaction device for producing a water-proof coating. An anchor type low-speed scraping stirrer is arranged at the bottom of a kettle body; the anchor type low-speed scraping stirrer is connected with a low-speed variable-frequency speed regulating motor; the low-speed variable-frequency speed regulating motor is arranged at the top end of the kettle body; high-speed paddle stirrers are arranged on the side face of the anchor type low-speed scraping stirrer; the high-speed paddle stirrers are connected with the high-speed variable-frequency speed regulating motor; helical heat conducting oil heating pipes are arranged on the outer side of the kettle body; and helical cooling water pipes are arranged on the outer sides of the helical heat conducting oil heating pipes. According to the double-helix and double-stirring reaction device, the variable-frequency speed-regulating high-speed paddle stirrer is arranged on a reaction kettle, and meanwhile the anchor type low-speed scraping stirrer is provided, so that the scraping effect is ensured. A double-helix heating and cooling way is adopted, and heat conducting oil is helically introduced into one path for heating while cooling water is helically introduced into the other path for cooling in order to meet the requirements of process conditions, so that the requirement of temperature control as well as heating and cooling speeds at each stage of production are well ensured.

Description

technical field [0001] The invention relates to the technical field of waterproof paint production devices, in particular to a double helix double stirring reaction device for waterproof paint production. Background technique [0002] The production of polyurethane waterproof coating is a relatively complex physical and chemical process. It is very important to improve its mass transfer and heat transfer process, especially for organic reactions with relatively slow reaction speed and a certain degree of reverse reaction. How to ensure the participation of the reaction is more critical. The components are fully and uniformly mixed in the reaction kettle, the mass transfer interface of the components participating in the reaction is maximized, and the temperature of each layer in the reaction kettle is basically the same, which is the key to ensuring the reaction speed and degree of reaction. Each component has a certain viscosity, and the traditional reaction device cannot s...

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Problems solved by technology

[0002] The production of polyurethane waterproof coating is a relatively complex physical and chemical process. It is very important to improve its mass transfer and heat transfer process, especially for organic reactions with relatively slow reaction speed and a certain degree of reverse reaction. How to ensure the participation in the reaction The components are fully and uniformly mixed in the reactor, the mass transfer interface of the participating reaction components is maximized and the temperature of each layer in the reactor is basically the same, which is the key to ensure the reaction speed and degree of reaction, and the polyurethane coating Each component has a certain viscosity, and the traditional reaction device cannot solve the problem well by relying on a single high-speed stirring type

[0003] Coating production is also a repeated heating and cooling process: polyether heating and dehydration, cooling reaction, reaction exothermic heating, need to remove heat in time, cooling and discharging, etc., the existing equipment can not meet the needs of production, in order to ensure the product Quality, according to the requirements of process conditions, there are high and precise requirements for temperature control and duration of each stage. For example, using steam to heat up and cooling water to cool down can basically meet the requirements, but the effect is not ideal. Steam boilers require a large investment in project investment, staffing, management, etc., which greatly increases the input cost of the enterprise.

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