SU874102A1 - Decanting vessel - Google Patents

Description

(54) DESIGNER

one;

The invention relates to apparatus for separating a suspension due to gravity forces and can be used in various industries of the national economy, for example in organic synthesis processes. .

The closest to the proposed technical essence and the achieved effect is a settling tank, with a holding cylindrical body, a conical bottom and a lid, a shaft with scrapers, located in the central part of the coopus, with a scraper, a spinner, a separating element and a discharge pipe of the clarified liquid and condensed suspensions 1.

The disadvantage of the apparatus is that the introduction of the suspension into the settling zone is carried out without prior separation, as well as the possibility of the formation of stagnant zones between the corrugated plates and overgrowing of the channels. In addition, when separating thin dispersions and adhesion of solids to the material from which the plates are made, sediment will adhere to the plates, and cleaning the working surfaces of the packages from corrugated plates is very difficult; as the clarified liquid approaches the outlet nozzle, it increases, which negatively affects the quality of separation.

The purpose of the invention is to increase the reliability of the operation of the decanter and the efficiency of the separation of suspensions.

The goal is achieved by the fact that in the device, including

10 housing with a conical bottom, a shaft with scrapers, a flux spinner, a separating element, a spinner equipped with a conical bump stop with curvilinee vanes convex into

15 the direction of twisting of the liquid, and the separating element is made in the form of vertical plates installed at an angle to each other and inclined plates placed between them.

20

The drawing shows the decanter, a general view. .

The DEVICE contains a cylindrical body 1, a conical upper 2, a rotor shaft 3 with scrapers 4 arranged at the bottom of the apparatus, a swirler 5 of the cyclone type for introducing a suspension, a baffle with curvilinear blades b located on its inner surface, 30 separating element 7 in in the form of vertical elietics, in its position and in the sludge zone above the bump stop, the STEERING DEVICE 8, fittings 9 for introducing the suspension, withdrawing the clarified habitability 10 and withdrawing the sediment 11.

The separating element 7 is made in the form of vertical plates, forming radial channels in pairs, and the plates are connected to each other also in pairs by plates inclined with respect to the rotor. The separating element 7 serves for damping disturbances in the settling zone and for redistributing flows over the cross section of the apparatus.

The device works as follows.

The initial suspension is fed through the rod 9 into the spinner 5 of the tangentisB-e. The gap is akruz l / vaeto and at the expense of the neutrfing forces tva © aa phase from © ravaetsya to omenk, the stack in the bottom appa rggta. The zhidao shny flow enters the curved blades 6 and is thrown to the periphery. The blades are convex in the direction of the spinning of the liquid in the device, therefore the flow as it transforms the rotational motion into a translational along the radius. The curvilinear motion of the fluid promotes separation. The partially clarified slurry enters the sludge zone located by the slurry injection device.

In the settling zone, the clarified slurry moves upwards. Vertical platinum divides the sediment zone into sectors, which are generalized between themselves. The main purpose of the plate is to calm the flow and impart a rising luminous liquid to the laminar flow regime. At the same time, there is a local twist of the individual liquid flows in the horizontal plane when flowing around the vertical plates.

Repeated redistribution of fluid flow with the formation of local vortices generally contributes to the improvement of the decanter’s performance.

Claims (1)

1. Japanese Patent No. 50-6664, Cl. On 01 D 21/24, 12.07.75.