Device for Preventing Formation and Removal of bottom Sediments "Dolphin"

The Dolphin device is designed to wash out and mix bottom sediments in a tank with oil and oil products. The device is mounted on the cover of an oval or round manhole located on the first belt of the tank and is used in explosion hazardous areas of class B-1g, according to the classification of GL.7.3 PUE, or class 2 according to the classification of GOST R 51330.9, in which the formation of vapor and gas-air explosive mixtures of category IIA, IIB groups T1, T2, T3, T4 according to the classification of GOST R 51330.5, GOST R 51330.11 is possible. During operation, the working screw of the device forms a directed turbulent jet of the product, which ensures its mixing. The Dolphin device is controlled by automatic means, which ensures the rotation of the device and a change in the direction of the jet in the horizontal plane. The rotation step is 3 degrees. The operating time at each step is 11 minutes. At the discretion of the consumer, time intervals can be adjusted using a time relay, the recommended range is from 11 to 16 minutes per step. The maximum rotation angle is 30 degrees in each direction relative to the central position. When the device operates in extreme angular positions, a circular rotation of the entire mass of the product in the tank occurs. The shaft seal can be made in three versions: gland packing, lip seal, end seal. The device is supplied complete with the necessary parts: a set of pipes for supplying cables from electric motors, an explosion-proof control post, a central operator's console, a propeller and fasteners. This allows you to significantly reduce the costs of installation and preparation of the device for operation. According to resistance to the effects of climatic factors of the external environment, the devices are manufactured in U and UHL versions, placement category 1 according to GOST 15150-69.