Mezcla de pinturas y recubrimientos: dispersión de alto cizallamiento con mezcladoras de reja y doble eje


Fecha de publicación:

2026-09-16

Mezcla de pinturas y recubrimientos: dispersión de pigmento y carga de alto cizallamiento con mezcladoras de reja y líneas de doble eje continuas, incluyendo servicios acuosos frente a disolvente y nuestra patente de cuchilla dispersante.

Los recubrimientos son una dispersión primero y una fórmula después. Las pinturas de pared, madera y metal — sean a base de agua o de disolvente — dependen todas de romper los aglomerados de pigmento hasta un acabado estable y sin grumos. Un mezclador suave solo Unta la arenilla; uno de alto cizallamiento la destroza. La mezcladora de reja DLT es la base natural aquí porque sus cuchillas voladoras de alta velocidad dispersan pigmento y carga en un lecho turbulento en 2–8 minutos. Para el equipo completo por aplicación, vea nuestra página de equipos de mezcla para pinturas y recubrimientos.

Servicios a base de agua frente a disolvente

Las pinturas a base de agua necesitan cizalla controlada y buena humectación; las de disolvente añaden una dimensión de inflamabilidad que exige accionamientos a prueba de explosión (véanse nuestras notas de mezclador a prueba de explosión). Ambas comparten el mismo objetivo de dispersión: tamaño de partícula uniforme, sin semilla, viscosidad repetible. La elección del mezclador depende menos del ligante y más de cuánto debe romperse el lote y de cuánto caudal necesita.

Dispersión de reja frente a doble eje continuo

Para dispersiones y pastas por lotes, la mezcladora de reja con cuchillas voladoras alcanza una mezcla turbulenta rápida y soporta las alimentaciones grumosas y viscosas en las que una cinta se detendría. Para líneas de alto caudal que corren sin parar, la mezcladora de doble eje de paletas continua DJHX fluidiza y descarga sin abrir el recipiente, lo que conviene a las lechadas de imprimación y carga. Para cambio de color con bajo residuo, la mezcladora cónica de tornillo DSHL es la alternativa suave.

Diseño respaldado por nuestra patente

La cuchilla dispersante de alta velocidad está protegida por nuestra patente de modelo de utilidad china ZL 2018 2 1248921.1, que cubre el conjunto de cuchilla voladora que rompe los aglomerados durante el mezclado. Es el componente que convierte una mezcladora de reja de un simple mezclador en un dispersor para pinturas y recubrimientos.

Parámetros técnicos típicos de la mezcladora de reja para pintura (DLT)

ModelWorking volume (L)Total power (kW)Chopper (kW)Mix time (min)
DLT-300120–1805.5–112.2–32–5
DLT-1000400–60011–18.54–5.53–6
DLT-30001200–180022–377.5–114–7
DLT-60002400–360045–7511–155–8

La gama de reja abarca aproximadamente 100–6000 L de volumen de trabajo y 5–132 kW de potencia total de accionamiento; los valores anteriores son puntos representativos para servicio de recubrimientos. El modelo final depende de la viscosidad, la carga de pigmento y de si se especifica una cuchilla — confirme con un lote de prueba y un control de dispersión.

Aditivos y dosificación de líquidos

Pre-disperse el pigmento como torta prensada o lechada, dosifique resina y disolvente por una barra de pulverización para una humectación uniforme, y mantenga el llenado al 40–60% para que el lecho siga turbulento. Tras corridas coloreadas, limpie en seco y luego haga CIP húmedo de la cuba antes de un tono distinto; una el recipiente a tierra para polvos conductores.

Equipo relacionado

Para lechadas de recubrimiento continuas vea la mezcladora de doble eje de paletas continua DJHX; para el secado al vacío del mismo lote la mezcladora de secado al vacío DRH mantiene el proceso en una línea.

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