Preparation device for oil field chemicals

The invention discloses an oil field chemical preparation device which structurally comprises an observation window, a water washing tower and a circulating water pump, the outer side of the observation window is fixedly connected with the left end of the water washing tower in an embedded mode, the rear side of the circulating water pump is connected with the outer side of the lower end of the water washing tower through rivets, and the water washing tower comprises an air inlet, a tower body and a discharge port. After icing, the gravity of the outer side of the anti-icing wall is gradually increased, the fixing sleeve slides downwards, the positioning plate moves towards the outer side, meanwhile, the ejector pin is ejected out from the interior of the contact plate, an ice layer is broken, washing liquid is prevented from being frozen on the inner side of the tower wall, and the anti-icing effect is achieved. And after the positioning plate moves to the right side, air in the folding shell is extruded and