RU1788917C - Drum for centrifugal separators - Google Patents

Abstract

Usage: the invention relates to centrifugal devices, namely, separators for separating suspensions or emulsions in the food, chemical and other industries. SUBSTANCE: centrifugal liquid separator drum includes a base with sludge discharge openings, a movable locking piston, a plate pack, a plate holder having a base and a conical supporting part, in which channels for supplying the liquid to be separated into the plate pack are made, and channels for the withdrawal of a light and heavy fraction. The channels for supplying the liquid to be separated at the base of the tray holder are made expanding in the direction of fluid movement and are formed by a number of shaped blades evenly spaced around the circumference, the inlet portions of which are bent in the direction of rotation of the drum, the inlet of each channel being trapezoidal and the outlet the hole is made round. The channels located in the conical supporting part of the plate holder are made smoothly expanding to their outlet openings. 12 m. ate with

Description

FIELD OF THE INVENTION This invention relates to drums for emulsion separators, suspensions, which are used in dairy, food, and other industries.

A centrifugal separator drum with a supply of a divided liquid from a hollow plate holder to a packet plate is known through longitudinal slots made along the height of the plate holder, while the base of the plate holder is solid. Such a construction causes turbulence in the flow when fluid enters the slots and thereby, for example, during the separation of milk, impairs the quality of the separation of the emulsion.

Closest to the invention is a self-discharging liquid separator drum. This drum comprises a base, a lid, a movable piston, a plate pack, a plate holder with a base and a conical supporting part, in which channels are provided for supplying the liquid to be separated into the plate package and channels for outputting a light fraction.

However, in this drum there is a tendency to turbulence of the flow when passing from the center hole of the plate VI

00

00

Yu

Cj

the holder into the cylindrical channels for supplying liquid to the package of plates due to a sharp narrowing of the bore sections. The same channels, consisting of 3 sections, create great resistance to fluid movement due to sharp rotations of the channel sections relative to each other.

These two effects worsen the quality of separation, in particular when separating milk due to premature crushing of the fat globules. The purpose of the invention is to reduce the turbulence of the liquid supplied to the package and to improve the quality of separation.

This goal is achieved in that in the drum of a centrifugal separator for separating liquid, mainly milk, including a base with holes for discharging sludge, a cover, a movable piston, a plate package, a plate holder having a base and a conical supporting part, in which channels for supplying a section are made liquid into a package of plates, the latter are made expanding in the direction of movement of the liquid and are formed by a number of profiled blades evenly spaced around the circumference, the inlet portions of which are bent in the direction of rotation of the drum, the inlet of each channel has a trapezoidal shape, and the outlet opening is circular, the channels disposed in the conical support part tarelkoderzhate- l-expandable made plavnorasshir to their outlet apertures.

In FIG. 1 is a longitudinal section through a centrifugal separator drum; in FIG. 2 - node I of FIG. 1; in FIG. 3 is a view B (FIG. 2) of an insert element of a tray holder; FIG. 4 is a section BB in the axis of the interscapular canal of FIG. 2; in FIG. 5-10 cross-sections of G-D, D-D, E-E, F-J, I-I, K-K channels of FIG. 2; in FIG. 11 is a perspective view of an insertion element of a tray holder cut in a cone with a generatrix BB of FIG. 2. In FIG. 3, 4 and 11 with an arrow with the letter (o indicates the direction of rotation of the drum; in Fig. 12 - direction of speeds:

C is the absolute speed of the flow incident on the scapula;

U - circumferential speed of the scapula;

W is the flow rate moving relative to the blade;

/ is the angle between the peripheral and relative velocities.

The centrifugal separator drum (Fig. 1) contains a base 1 with holes

for unloading the sediment 2, the cover 3, the movable piston 4, the package of plates 5, the plate holder 6, having a base 7 with an insert element 8 and a conical supporting part 9 with an overlay element 10. At the base of the plate holder and in its conical supporting part are made channels 11, 12, 13 and 14 for supplying a separating liquid to the tray package (Fig. 2). The plate holder also includes central drilling 15, which is a channel for introducing a separable liquid into the drum, and channels 16 for withdrawing a light fraction from the drum (Fig. 1, Fig. 2). The channels 11, 12, 13 and 14 of the holder barrel 5 are made expanding in the direction of fluid movement (Fig. 4) and are formed by a series of profiled blades 17 evenly spaced around the circumference (Fig. Z. Fig. 4, Fig. 11). Weekend

0 portions of the blades 17 are bent in the direction of rotation of the drum so that they coincide with the direction of the flow velocity W moving relative to the blade (Fig. 4, Fig. 12). Each inlet

5 of the channel 12 has a trapezoidal shape (Fig. 5), and the outlet is made round (Fig. 8, Fig. 9). The channels 14 located in the conical supporting part of the plate holder are made

0 smoothly expanding to their outlet openings (Fig. 9, Fig. 10).

The centrifugal separator drum operates as follows. The partitioned liquid enters the channel 15 of the platecoder5 of the receiver b (Figs. 1, 2) and moves along it at the initial speed. Further, when it enters the smoothly expanding channel 11 (Fig. 2), the liquid, gradually reducing the speed, is directed to the inlets of the rotating interscapular channels 12 (Fig. 4). Since the inlet of the 4-blade vane forming the inlet openings are bent so that they coincide with the direction of the flow velocity moving relative to the vane 5, the liquid enters the interscapular channels and glides along the lateral surfaces of the vane without impacts, swirls and breaks, i.e., without turbulization flow. Enter the interscapular, channels 12 (Fig. 4), a liquid

0 acquires a flow direction tangential with respect to the axis of rotation of the drum and then, moving along these channels, it changes tangential to the direction of rotation of the drum radial with respect to the axis of rotation

5, the flow direction continues to smoothly reduce speed, while the trapezoidal cross section of the flow smoothly changes to a circular section. The passage through the channels 13 (Fig. 4) of circular cross section, the liquid continues to smoothly reduce speed

flow, and in channels 14 (Fig. 4), simultaneously with a gradual decrease in the flow velocity, a smooth change in its direction occurs from radial to parallel to the axis of rotation of the drum. The exit from the channels 14, the liquid enters the package of plates 5 (Fig. 1), where it is divided into heavy and light fractions, which are removed from the drum by the gaps between the cover 3 and the package of plates 5 and through the channels 16 of the holder (Fig. 1), respectively.

Claims (1)

The design of the proposed centrifugal separator drum thanks to the profiled channels for supplying the separable liquid to the plate package, the shockless liquid inlet and the liquid flow through them, will reduce hydraulic losses along the drum paths, and during milk separation, by maintaining the integrity of the fat globules before they enter in a package of plates - to increase the degree of fat-freeing of milk, i.e., to improve the quality of separation. SUMMARY OF THE INVENTION A centrifugal separator drum for separating a liquid, mainly milk, including a base with openings for discharging sludge, a movable locking piston, a plate pack, a plate holder having a base and conical support part, in which channels for supplying the liquid to be divided into the tray package and channels for outputting light and heavy fractions are made, characterized in that, in order to reduce the turbulence of the liquid supplied to the tray package and improving the quality of separation, the channels for supplying the phase to be divided the liquids located at the base of the plate holders are made expanding in the direction of fluid movement and are formed by a number of shaped blades evenly spaced around the circumference, the inlet portions of which are curved in the direction of rotation of the drum, while the inlet of each channel has a trapezoidal shape, and the outlet is made round, and the channels located in the conical supporting part of the plate holder are made smoothly expandable to their outlet openings. b