RU2491979C2 - Device for removal of liquid phase from materials - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: proposed device comprises outer drum accommodating helical insert, filter, inlet, branch pipe and filtrate and thickened fraction discharge branch pipes. Proposed device differs in that the filter with constant-pitch helical lines is composed of three or more perforated rectangular strips of curved shape of different order and degree or curvature with centers of perforated surface curvature located inside or outside of filter cross-section.

EFFECT: simplified design, expanded operating performance.

1 cl, 5 dwg

Description

The invention relates to the food industry, for example, for dehydration of raw materials in the production of pectin, separation of the liquid phase from bulk materials, drying of materials, agriculture, in particular, equipment for separating waste feed mill complexes into liquid and solid phases suitable for transportation to fields as fertilizers in liquid or solid state.

Known inertial thickener (AS No. 1389815, class B01D 33/02, 1988), comprising a housing with a cylindrical filter installed in it, an inlet pipe, a screw insert and pipes for draining the filtrate and condensed fraction.

A disadvantage of the known design is the low productivity and the need to tilt the entire structure to ensure transportation of the movement of materials from loading to unloading and limited technological capabilities.

Closest to the proposed invention is a device for separating the liquid phase from materials (patent No. 2375099, class B01D 33/27, publ. 10.12.2009, bull. No. 34), including an outer drum, inside which is fixed a screw insert, a filter made of twisted along a helical line in the longitudinal direction and curved in the transverse direction along a helical line on a conical mandrel of three or more perforated strips of trapezoidal shape with different sizes in width, an inlet pipe, a pipe for draining the filtrate and condensed fraction.

A disadvantage of the known design is the complexity of manufacture and limited technological capabilities.

The technical solution to the problem is to simplify the design and expand the technological capabilities of the installation.

This object is achieved in that in a device for separating a liquid phase from materials, including an external drum, inside which a filter is fixed, an inlet pipe, pipes for draining the filtrate and condensed fraction, a filter with a constant pitch of helical lines is made of three or more perforated rectangular stripes curved forms of various orders and degrees of curvature with the centers of the curves of the perforated surface located inside the cross section of the filter or outside its cross section.

According to the patent literature not found a technical solution similar to the claimed, which allows to judge about the inventive step of the proposed design of the device for separating the liquid phase from materials.

The novelty of the invention lies in the fact that such a design of the perforated filter surface, the presence of three or more running lines with a constant pitch of helical lines around the perimeter, twisting together on a conical mandrel of trapezoidal strips, rectangular strips on a cylindrical mandrel expands technological capabilities and reduces the dimensions of the device in width and height (in diameter), since there is no increase in the diameter of the filter due to the trapezoidal shape of the bands, and therefore the entire installation in elom.

The novelty is also due to the fact that due to the implementation of the filter from three or more perforated rectangular strips of various orders and degrees of curvature, internal helical surfaces of double curvature are formed, which provides a change in the velocity vectors of the material during transportation from loading to unloading, which expands technological capabilities due to intensification the process of separating the liquid phase from materials.

The novelty of the invention lies in the fact that when the device is operating, the particles of material receive additional movement from the perforated walls of the double curvature of the filter, which intensifies the mixing of the particles of the material and expands the technological capabilities.

The novelty is also due to the fact that in the proposed design the filter is made of three or more perforated rectangular strips of various orders and degrees of curvature with the centers of the curves of the perforated surface located inside the cross section of the filter or outside its cross section, which expands the technological capabilities of the device.

The invention is illustrated by drawings, where figure 1 shows a device for separating the liquid phase from materials, General view; figure 2 is a section aa in figure 1; figure 3 is a filter, front view; in Fig.4 is a section bB in Fig.3, while the perforated stripes of the perforated surface of the filter are described by concave curves in which the centers of curvature are located outside its cross section; in Fig.5 is a section bB in Fig.3, while the perforated strip of the perforated surface of the filter are described by convex curves in which the centers of curvature are located inside the cross section of the screw column.

A device for separating the liquid phase from materials contains a frame 1, made in the form of a welded frame. A drive is mounted on the bed, consisting of an electric motor 2, a chain drive 3 and four roller bearings 4, on which two circular shells 5 and 6 are mounted, in which the outer drum 7 is fixed, with the filter 8 coaxially mounted in it. The outer drum 7 is made in the form a cylinder, inside of which screw guides 9 (screw inserts) are fixed, and is provided with perimeter holes 10 for draining the liquid phase from the filter. A section of the outer drum 7 with holes 10 is mounted in the housing 11, which in its lower part is provided with a window 12 (a pipe for draining the filtrate). On the frame 1 mounted boot device in the form of a funnel 13 (inlet). The installation is equipped with a conveyor 14 for receiving the solid phase of the material (pipe for removal of the condensed fraction) and a capacity of 15 for receiving the liquid phase of the materials.

; параболой y²=2px; гиперболой $$y=\frac{k}{x}$$

; линиями третьего порядка кривизны выше - Декартов лист х³+y³-3а·х·y=0; локон Аньези y=а³(а²+х²); Строфоида $$y^3=x^2\frac{\left(a+x\right)}{\left(a-x\right)}$$

; улитка Паскаля (х²+y²-2Rx)²-а²(х²+y²)=0 и т.п. линиями n-го порядка кривизны - кривыми, описанные полиномами.The filter 8 (Fig. 3, Fig. 4, Fig. 5) is made in the form of a screw multi-start perforated surface made along the perimeter of three or more perforated rectangular strips, for example, three, 16, 17, 18 curvilinear shapes of various orders with centers of perforated curves surfaces located inside the cross section of the filter or outside its cross section. The bands 16, 17, 18 are folded in a vertical plane and sequentially connected to each other along the length of the filter 8. The screw perforated bands 16, 17, 18 are made curved concave or convex relative to the axis of rotation of the filter 8 (Fig. 3, Fig. 4, Fig. 5 ) and are described by curves of various orders and degrees of curvature, for example, by lines of the second order of curvature - an ellipse $$\frac{x^{\underset{\_}{2}}}{a^{\underset{\_}{2}}}+\frac{y^{\underset{\_}{2}}}{b^{\underset{\_}{2}}}$$

; parabola y ² = 2px; hyperbole $$y=\frac{k}{x}$$

; third-order lines of curvature above - Cartesian sheet x ³ + y ³ -3a · x · y = 0; Agnesi curl y = a ³ (a ² + x ² ); Strofoid $$y^3=x^2\frac{\left(a+x\right)}{\left(a-x\right)}$$

; Pascal snail (x ² + y ² -2Rx) ² -a ² (x ² + y ² ) = 0, etc. lines of the nth order of curvature - curves described by polynomials.

The connection lines of the perforated strips 16, 17, 18 rolled into a screw form a clearly defined unidirectional three-way and more screw screening surface, with helical lines around the perimeter of the filter 8, one of which is shown in Fig. 3 by a line 19-20 and screw grooves K ₁ , K ₂ , K ₃ as, for example, FIG. 4, FIG. 5.

Due to the presence on the inner surface of the filter 8 of three helical lines and, respectively, helical grooves, when the filter 8 is rotated, not only the axial movement of the material from loading to unloading is ensured, but also the intensity of separation of the liquid phase from the material increases, the intensity, energy intensity and frequency of interaction of particles of the material increase , their vorticity, which intensifies the processes of separation of the liquid phase from materials, expands technological capabilities.

Installation for the separation of the liquid phase from the materials works as follows.

The materials to be processed enter through the hopper 13 into the filter 8. In the filter 8, due to the movement of the material flows along complex paths and at different angles to the axis of the perforation holes of the filter 8, the unsteady nature of the material flows inside the filter 8, their intensive mixing and cascade movement , relatively oppositely directed to each other and to the axis of rotation of the perforated walls, increasing the power and frequency of interaction of the flows of materials with each other and with the walls of the filter 8, is provided not only a favorable hydrodynamic situation for the efficient implementation of the processes of separation of the liquid phase from materials, but also the process of separation of the liquid phase from materials is intensified.

Thus, when moving materials inside the filter 8, the liquid phase through its perforated holes is discharged into the cavity of the outer drum 7, where screw guides 9 are transported to the holes 10. Through the holes 10, the liquid phase is discharged from the cavity of the outer drum 7 into the cavity of the housing 11 and through the window 12 enters the tank 15. The solid phase of the materials is discharged through the outlet of the filter 8 to the conveyor 14.

Technical and economic advantages arise due to the fact that the filter with a constant pitch of helical lines is made of three or more perforated rectangular strips of curvilinear shape of various orders and degrees of curvature with the centers of the curves of the perforated surface located inside the cross section of the filter or outside its cross section, which ensures not only simplification of the design, but also expands the technological capabilities of the device.

Claims (1)

A device for separating the liquid phase from materials, including an outer drum, inside which a filter is fixed, an inlet pipe, nozzles for draining the filtrate and thickened fraction, characterized in that the filter with a constant pitch of helical lines is made of three or more perforated rectangular stripes of curvilinear shape of various orders and degrees of curvature with the centers of the curves of the perforated surface located inside the cross section of the filter or outside its cross section.

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