New epoxy paint reaction kettle

Abstract

The invention discloses a new epoxy paint reaction kettle, comprising a barrel body, a stirring shaft arranged in the barrel body, a feed port arranged at the top of the barrel body, a signal processor and a discharge port arranged at the bottom of the barrel body, wherein a filter screen is arranged at the bottom end of the discharge port, the stirring shaft is provided with a stirring paddle distributed along the packing auger direction, two symmetrically arranged connecting rods are also arranged at the middle part of the stirring shaft, the tail end of each connecting rod is provided with a scraper matched with the inner wall of the barrel body, the tail end of the stirring shaft is provided with a consistency sensor, a crossbeam is also arranged at the tail end of the stirring shaft, and a lateral stirring device matched with the bottom of the barrel body is connected to the crossbeam. According to the new epoxy paint reaction kettle, an eddy appears in stirring, so that effect on turning over and mixing material is improved, paint is stirred more uniformly, and thereby product is uniform in performance and free of coking, meanwhile the uniformly mixed liquid material is prevented from having large impurities, and mixing effect of the material is increased.

Description

technical field [0001] The invention relates to the field of paint processing, in particular to a novel epoxy paint reaction kettle. Background technique [0002] Generally speaking, two-component epoxy coatings containing more epoxy groups in the composition are collectively referred to as epoxy paints. The main variety of epoxy paint is two-component or three-component epoxy paint, which is composed of epoxy resin and curing agent. They are mixed in a certain proportion, and then prepared by hot extrusion, crushing and sieving. They are stable in storage at room temperature. After electrostatic spraying, friction spraying (thermosetting method) or fluidized bed dipping (thermoplastic method), and then heating and baking, they are melted and solidified to form a flat and bright permanent coating film, which can be used for decoration. And the purpose of anti-corrosion, among which the epoxy resin used in large quantities, the production process generally adopts the three-...

AI Technical Summary

Problems solved by technology

They are stable in storage at room temperature. After electrostatic spraying, friction spraying (thermosetting method) or fluidized bed dipping (thermoplastic method), they are heated and baked to melt and solidify to form a flat and bright permanent coating film to achieve decorative properties. For the purpose of anti-corrosion, the epoxy resin used in large quantities, the production process generally adopts a three-pot reaction system (beating kettle, esterification / ester exchange kettle, polycondensation kettle); the stirrer of the reaction kettle is a single inclined paddle or anchor Type paddle, the stirring rate of each stage is fixed, this design is not suitable for the stirring requirements of epoxy resin single tank production, the stirring method and rotating speed are fixed, the stirring effect is not very ideal, and due to the lack of concentration detection device, as the reaction progresses, The molecular weight keeps increasing, which makes the concentration and viscosity of the material constantly increase, so that the material at the edge of the reactor cannot be stirred, resulting in uneven product performance and even coking.

At the same time, there is no filtering device at the outlet of the existing reactor, which cannot filter the impurities with large particles in the uniformly stirred material liquid, which affects the mixing effect of the material.

Images