RU215850U1 - SCREW PRESS SEPARATOR - Google Patents

Abstract

The utility model relates to devices for separating solids from liquids. The screw press separator comprises a support body 1, a sieve body 2, a cover 3 closing the sieve body with a flange 4, a cylindrical grate sieve 5, an auger 6, a means for preventing rotation and a means for preventing axial and radial movement of the sieve 5. The means for preventing rotation of the sieve contains guides 7 on the sieve 5 and fixators 8 of the guides on the body 2. The means of preventing axial and radial movement of the sieve 5 contains end rings 9 fixed on the sieve and reciprocal annular grooves 10 made on the support body 1 and flange 4 of the cover, in which the rings 9 of the sieve are installed. The technical result obtained in solving the task is to ensure a rigid positioning of the sieve in the housing and to ensure the strength and rigidity of the sieve, which, in turn, improves the reliability of the design. 3 w.p. f-ly, 4 ill.

Description

The utility model relates to devices for separating solids from liquids, namely, devices designed for dehydration of residues of unsuitable effluents, for example, in animal husbandry, food industry, etc.

A well-known screw press separator (see patent RU 2612711, IPC B01D 29/11, publ. 03/13/2017) contains a support housing, a sieve body, a cover with a flange, a cylindrical sieve, a shaft with a screw. The sieve contains a plurality of working grates oriented along the axis of the sieve, on which a support grate is wound in a spiral from the outside. The sieve consists of two parts. The first part of the sieve is made elastically deformable and placed directly in the housing with the possibility of free deformation in the radial direction during operation, but with the exception of direct contact with the screw. The second part of the sieve is located in the frame with the possibility of preventing the rotation of the sieve. In this case, the frame has longitudinal stiffening ribs, through which it is fixed in the body and due to which a gap is provided between the body and the frame.

The disadvantage of the known analogue is the complexity of the design, since it is necessary to position the reinforcing frame in the cork area, while additionally fixing the sieve from rotation. Thus, this design contains a large number of detachable connections and the required high precision in the processing of seats at the joints.

Known screw press separator, taken as a prototype (see patent DE 202011105765, IPC B30D 9/12, publ. 09.02.2012). The separator contains a support housing, a sieve body, a cover with a flange, a cylindrical sieve, a shaft with a screw. The sieve contains a plurality of working grates oriented along the axis of the sieve, on which a support grate is wound in a spiral from the outside. The sieve is placed in the frame and has a slot in the longitudinal direction, while the sieve abuts against the inner surface of the frame with the possibility of preventing rotation and direct contact with the screw. The frame has longitudinal stiffening ribs, through which it is centered in the body and due to which a gap is provided between the screen and the auger.

The disadvantage of the prototype is that this design reduces the reliability of the screw separator, since the sieve is subjected to constant dynamic radial and axial loads, which leads to rapid wear of the sieve and the constant replacement of this part of the structure. The sieve and the auger float (have degrees of freedom), which creates in certain cases a positioning error and jamming, which leads to mashing or rupture of the sieve, which accordingly reduces the service life. In addition, due to the composite design of the frame-sieve, the positioning accuracy of the sieve decreases, which also leads to a decrease in the reliability and quality of the separation of the product.

The objective of the claimed utility model is to create a reliable and simple design of the screw press separator.

The technical result obtained in solving the problem is to ensure a rigid positioning of the sieve in the housing and to ensure the strength and rigidity of the sieve, which in turn increases the reliability of the design.

The specified technical result is achieved due to the fact that the screw press-separator contains a support housing, a sieve body, a lid with a flange, a cylindrical slotted sieve made of a plurality of working grates, on which a support grate is wound in a spiral and fixed on the outside, a means of preventing the rotation of the sieve , according to the utility model, is equipped with a means of preventing axial and radial movement of the sieve. Means for preventing axial and radial vibrations of the sieve contains end rings fixed on the sieve and reciprocal annular grooves made on the supporting body and the cover flange, in which the sieve rings are installed. The means for preventing rotation of the sieve may comprise guides on the sieve and guide retainers on the housing. The technical result is also achieved by the fact that the guides are connected to the end rings and to the outer surface of the supporting grate and are arranged parallel to the longitudinal axis of the sieve evenly along the outer surface of the sieve. The supporting grate can be made of a T-shaped wire with shoulders (Q - profile).

Installing a screen with the ability to prevent axial and longitudinal vibrations of the screen provides an increase in the reliability and service life of the screen and, as a result, the entire screw separator.

Fixation of the sieve by means of rings on the sieve and grooves on the housing and cover flange allows you to reliably, simply and fairly accurately position the slotted sieve relative to the separator housing, which also leads to an increase in the reliability of the separator as a whole.

The connection of the guides with the supporting grate and with the sieve rings achieves a significant increase in the rigidity of the sieve structure and, as a result, a reduction in deformations and dynamic loads of the sieve.

The use of a T-shaped support grate with shoulders will increase the rigidity of the sieve while maintaining the quality of the welded joint, which will increase the reliability and service life of the sieve and the separator as a whole.

The presence of essential features that distinguish the claimed utility model from those known from the prior art, including the closest analogue, allows us to conclude that the claimed technical solution is new. Compliance of the claimed utility model with the condition of patentability "industrial applicability" and confirmation of the possibility of implementing the claimed technical solution is shown on the example of a specific implementation of a screw press separator.

The utility model is illustrated by a drawing, which shows:

fig. 1 - general view of the screw press separator;

fig. 2 - view A in Fig. 1;

fig. 3 - section B-B in Fig. 1;

fig. 4 - view of the sieve.

Screw press-separator contains a support body 1, a sieve body 2, a cover 3 closing the sieve body 2 with a flange 4, a cylindrical grate sieve 5, an auger 6, a means for preventing rotation and a means for preventing axial and radial movement of the sieve 5 (Fig. 1, 2) . Means for preventing rotation of the sieve contains guides 7 on the sieve 5 and clamps 8 guides mounted on the housing 2 (Fig. 3). Means for preventing axial and radial movement of the sieve 5 contains end rings 9 fixed on the sieve and reciprocal annular grooves 10 made on the support body 1 and flange 4 of the cover, in which the end rings 9 of the sieve are placed. The sieve 5 is made of a plurality of working grates 11 oriented along the axis of the sieve, on which a support grate 12 is wound on the outside in a spiral (Fig. 4). The working grates 11 can be made of wedge-shaped wire, and the supporting grate is preferably made of T-shaped wire with shoulders (Q - profile), while the working and supporting grates are interconnected, for example, by contact welding. Guides 7 are installed on the outer non-working side of the sieve 5 longitudinally to the axis of the sieve. The guides 7 can be attached to the end rings 9 and at least partially to the support grate 12, thus being both guides and stiffeners. Preferably the guides 7 are evenly spaced over the outer surface of the sieve.

Clips 8 guides of the sieve are installed on the body 2 sieves, in the example of the execution of the separator, the clips are made in the form of cylinders with a longitudinal groove. The support body 1 and the flange 4 have annular grooves 10 in which the end rings 9 are placed, thereby the sieve 5 is clamped in the longitudinal direction between the support body 1 and the outlet cover 3 to prevent axial and radial oscillation. The sieve can be installed with a minimum gap between the sieve and the body or without a gap.

Declared press separator works as follows.

The technological mixture enters the loading cavity of the support housing 1 of the screw press separator, moves inside the support housing 1 and sieve 5 by a rotating screw 6 towards the double-leaf cover 3. At the cover 3, the solid fraction is braked and compacted. The released liquid fraction, passing through the sieve 5, is poured out of the housing through the outlet pipe located at the bottom of the sieve housing 2. Due to the reinforced structure and rigid positioning of the sieve 5 in the body 2 with a minimum gap, the sieve is always in the same position. In this case, the auger is centered due to the created plug.

The use of the claimed utility model will also make it possible to simplify the design due to the rigid positioning of the sieve in the separator by means of a positioning system containing a means for preventing sieve rotation and a means for preventing axial and radial vibrations of the sieve, while ensuring strength and rigidity of the structure.

Claims (4)

1. A screw press separator, containing a support housing, a sieve body, a lid with a flange, a cylindrical slotted sieve made of a plurality of working grates, on which a support grate is wound in a spiral and fixed on the outside, a means of preventing the rotation of the sieve, characterized in that it is additionally equipped with a means of preventing axial and radial movement of the sieve. 2. Screw press separator according to claim 1, characterized in that the means for preventing axial and radial movement of the sieve contains end rings of the sieve and annular grooves made on the support body and flange of the lid, in which the sieve rings are installed. 3. Screw press separator according to claim. 1, characterized in that the means for preventing the rotation of the sieve contains guiding sieves and clamps placed on the housing. 4. Screw press separator according to claim 3, characterized in that the guide sieves are connected to the end rings and to the outer surface of the supporting grate and are located parallel to the longitudinal axis of the sieve.

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