SU598649A1 - Centrifuge - Google Patents

Description

(54) CENTRIFUGE

one .

The invention relates to equipment for the separation of liquid inhomogeneous systems using centrifugal forces, in particular centrifuges, and can be used in the food, chemical, pharmaceutical and other industries.

Known centrifuges, comprising a housing, a power supply device, a rotor with discharge windows in its bottom, and a sediment discharge mechanism comprising a knife 1, 2.

A centrifuge is also known, comprising a housing, a feeding device, a rotor with discharge windows in the bottom, a sludge discharge mechanism comprising a knife mounted on a holder rotatable relative to the vertical axis, and a reflector for feeding sludge to the discharge windows 3.

However, in this centrifuge, the sludge discharge mechanism and the swiveling reflector are fixed in a cylindrical cup rigidly connected to the lid. In the inner cavity of the glass actuators are placed unloading sediment and reflector.

The known centrifuge has low productivity and is complicated in design, since the placement of the glass with the drives inside the rotor leads to a reduction in the effective capacity of the rotor. In addition, the support node is located lower than in structures that do not have

such a glass, as a result of which the load on the upper bearing is increased and the efficiency of the latter is significantly reduced.

The installation of all drives inside the bowl 5 impairs access to them, increasing the laboriousness of the centrifuge in operation, and the use of a reflector and an unloading mechanism with individual drives necessitates synchronization of the operation of these drives and reduces the reliability of the centrifuge and increases its cost.

The purpose of the invention is to increase productivity and simplify the design of the centrifuge.

To do this, in the proposed centrifuge, a razhatel is mounted on a rotating holder between the knife and the axis of the holder. The distance from the axis of the rotor to the trailing edge of the knife to the distance from the axis of the rotor to the leading edge of the reflector and the ratio of the distance from the axis of the rotor to the trailing edge of the follower to the outer radius of the discharge ports is from 0.25 to 1.0.

In addition, the reflector is mounted on a rotating holder with the possibility of changing its position relative to the rotor axis.

Claims (3)

FIG. 1 shows schematically the prices of a trifuga, a longitudinal section; in fig. 2 is a diagram illustrating the installation and the relative position of the knife and the reflector. The centrifuge includes a housing 1, a rotor 2 with discharge windows 3. at its bottom and a support 4. Inside the rotor 2 are placed a feeding device 5 and a sludge discharge mechanism containing knife 6 with blade 7 and reflector 8 for feeding sludge to discharge windows 3. Knife 6 using the holder 9 is fixed on the rotary axis 10. On the holder 9 between the axis 10 and the knife 6, the reflector 8 is fixed, while the ratio of the distance from the axis 11 of the rotor 2 to the rear edge of the knife 6 to the distance from the axis 11 of the rotor to the front edge of the reflector 8 and the ratio of the distance from the axis 11 of the rotor 2 to the trailing edge o the cracker 8 to the outer radius of the discharge ports 3 is from 0.25 to 1.0. The reflector 8 is fixed on the rotating holder 9 with the possibility of changing its position relative to the axis 11 of the rotor. The centrifuge has a drive that includes an electric motor 12 and a V-belt shift, ochu 13 The centrifuge operates as follows. The rotating rotor 2 is fed through the power supply device 5 until the working capacity of the rotor to be filled with the suspension is completely filled. In this case, the mechanism for unloading sediment is in the initial position, in which the knife 6 is moved outside the working capacity of the rotor, i.e., the limits of the radius (Ri) of the rotor bead. At the end of the loading, the rotor 2 is accelerated to the operating speed, and the sediment and its substance are squeezed. The filtrate is collected in and out of housing 1. At the end of the run, the rotor 2 brakes to the unloading rotation speed, after which the sediment is cut off by the knife 6. During unloading, the holder 9 rotates around the axis 10, and the knife 6 cuts off the sediment and guides it to the axis 11 of the rotor 2, and the reflector 8 drops it into discharge windows 3. The installation of the reflector 8 on the pivoting holder 9 between the knife 6 and the holder axis 10 allows the knife to be made so that the difference between the distances from the rotor axis 2 to the front and rear edges of the knife is in the position when the knife is as far from the axis as possible rotor smaller than maximum thickness Lo sediment in the rotor. As a result, with the same radius (Rj) of the rotor, it is possible to increase its working capacity by reducing the radius of the bead (Ri) of the rotor and the outer radius (Rs) of the discharge windows 3, as well as increase the diameter of the hub and install more load-bearing podschnipniki not shown) in support 4 of the rotor 2. Strengthening the sub-shaft assembly of the support 4 of the rotor will provide an opportunity to increase the capacity of the rotor by increasing its height and increasing its speed of rotation, while the life of the support of the rotor 4 increases. An increase in the volume of the rotor and the speed of its rotation leads to an increase in the productivity of the centrifuge. The proposed centrifuge allows to increase the design capacity by 1.62 times and unify a number of nodes of various standard sizes of centrifuges, for example, the sludge discharge mechanism, the feeding device and the rotor support assembly. 1. Centrifuge, comprising a housing, a feeding device, a rotor with discharge windows in the bottom, a sludge discharge mechanism containing a knife mounted on a holder rotatable relative to the vertical axis, and a reflector for supplying sludge to the discharge windows, characterized in that In order to increase productivity and simplify the design, the reflector is mounted on a pivoting holder between the knife and the holder axis, the ratio of the distance from the rotor axis to the rear edge of the knife to the distance from the rotor axis to the front fittin g otnoschenie reflector and distance from the rotor axis to the trailing edge of the latter to the outer radius of handling windows is from 0.25 to 1.0. 2. A centrifuge according to claim 1, characterized in that the reflector is fixed on the rotary holder with the possibility of changing its position relative to the rotor axis. Sources of information taken into account in the examination: 1.Patent of France No. 1224777, M.cl. 2 B 04 B 1960. 2. Japanese patent number 16472, M..kl. 72 C 322, 1966. 3. USSR author's certificate number 338263, M. kl2. B 04 B 1/02, 1970. I'M IN. 12 FIG. one