JPH0523111A - Filter plate for cocoa-paste compressing machine - Google Patents

Abstract

PURPOSE: To provide the subject filter plate realizing uniform expression and the reduction of expressing time by providing a pedestal for housing a filter gauze on a filtering side and a plurality of through holes communicating with a spiral groove for discharging extracted cocoa butter on a distributing side. CONSTITUTION: The desired filter plate is composed of the pedestal for housing at least one filter gauze on the filtering side and the plurality of through holes 7 communicating with the spiral groove for discharging extracted cocoa butter on the distributing side. The through holes 7 are distributed at regular intervals along the spiral groove 9 arranged on the distribution face 8 of the filter plate 4 by starting within a center area and finishing within a collection discharging groove 15 near the outer peripheral of the filter plate. At the time of expressing by using the filter, cocoa plate is uniformly expressed because the holes 7 are distributed at regular intervals, and the expressing time is reduced because many start points are arranged at the spiral groove.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter plate for a cocoa paste squeezing press as set forth in the preamble of claim 1.

[0002]

As is known, in the final stage of the treatment of liquid cocoa paste, in a press with many reciprocating pistons and supporting the filter plate on the side facing the squeeze chamber. , Liquid phase cocoa butter is separated from the solid phase. Presses and filter plates of this kind are well known in the art.

The known filter plate contains, on the side facing the squeeze chamber, a very fine mesh filter gauze, and also has a plurality of through-holes leading to grooves provided on the side facing the associated piston. Have. A large number of radial grooves provide a large number of concentric grooves connected to a large number of external collection and discharge grooves. Therefore, the through holes of the filter plate are arranged along the concentric circumference and the radial grooves. The collection discharge groove faces the discharge hole of the cocoa butter made in the piston with which one of the parts is associated.

At the stage of squeezing the cocoa paste, it is important to extract the expensive and heavy cocoa butter to the maximum possible extent and to carry out the extraction in the shortest possible time. In the known filter plate, between the concentric and radial grooves of the through-holes there are a plurality of closed, ie through-hole-free, annular areas of relatively large surface area.

[0005]

These known filter plates have various drawbacks. Structurally, it is expensive to provide a concentric groove or a radial groove and to make a large number of through holes therein. Cocoa on the cake
Residues in butter are randomly distributed in strips, which makes it difficult to weigh residual cocoa butter according to relevant standards. It is impossible to shorten the squeezing time. The presence of closed annular regions at the end of the squeeze stage forms cocoa butter deposits in the cake that are difficult to eliminate. In these areas, relieving the hydraulic squeeze pressure draws in cocoa butter and returns from the through holes in the filter plate into the cake, resulting in an irregular distribution of cocoa butter over the area of the cake. . Such a non-uniform cake makes it difficult to work in the grinder.

It is an object of the present invention to create a filter plate capable of more evenly squeezing the cocoa paste and a faster elimination of cocoa butter, eliminating the deposit of cocoa butter in the cake and the known filter plates. In order to ensure that the cocoa butter residue is distributed evenly on the cake.

[0007]

This object is achieved by a filter plate which is characterized by through holes which lead into spiral grooves provided in the distribution plane of the filter plate. Optimal utilization of the circular surface area of the filter plate is ensured by the spiral groove starting in the central region of the filter plate and ending uninterrupted near the outer periphery of the plate in the collecting and discharging groove.

[0008]

According to the present invention, since the through holes are distributed at regular intervals along the spiral groove, more uniform pressing can be obtained.

Further, according to the present invention, the pressing time is further shortened by disposing a large number of starting points in the spiral groove communicating with the through hole.

In the central region of the filter plate, in the case of a spiral groove having a large number of starting points, the starting points of the helix are interconnected by an annular connecting groove, so that the filtered cocoa butter is Are rapidly and uniformly displaced in the central region of the.

In addition, it is possible to further reduce the pressing time by connecting the spiral grooves and by providing radial grooves which lead to the collecting and discharging grooves.

According to the invention, a particularly desired squeeze ratio is obtained because the distance between the through holes corresponds to the pitch of the spiral grooves.

[0013]

The following advantages are obtained by the filter plate according to the present invention. That is, the compression efficiency is increased by shortening the compression time. The filter plate according to the invention can also be used in existing presses. This increases the amount of (SiC) cocoa butter and the amount of cocoa butter extracted in the discharged cake that exactly corresponds to the set low ratio. As a result of the uniform mesh structure formed by the through holes, the residual cocoa butter is evenly distributed on the cake. Structurally, the filter plate can be made in a simple manner and the number of holes required is considerably less than the number of holes of known filter plates. As a result of the absence or small number of radial drainage channels, the filter plate according to the invention can withstand heavy pressure.

[0014]

EXAMPLE Other features of the filter plate according to the present invention,
Advantages and details will be apparent from the following description with reference to the accompanying drawings showing a preferred embodiment.

First, the known pressing machine shown in FIG. 4 will be briefly described below. In the figure, 1 indicates three piston parts. In the position of the piston 1 in the sideways orientation, a squeeze chamber 2 is formed into which the cocoa paste to be treated is introduced. Reference numeral 4 denotes a filter plate, which has a filter gauze on the filtration side facing the compression chamber 2, and a distribution side facing the piston 1 or a through hole on the distribution side and a concentric circular groove and a radial direction. There is a groove. The radial groove is connected to the outer collection drain groove,
And a part of it faces the discharge pipe 5 of the extracted cocoa butter.

Next, the filter plate 4 according to the present invention will be described with reference to FIGS. On the filtration side of the filter plate, a lower circular section 6 for accommodating a filtration net (not shown) is arranged in a known manner. According to the invention, through-holes 7 are arranged along a helical path, which leads into a helical groove 9 on the face 8 of the filter plate 4 facing the piston. In the example shown, the spiral groove begins in the central region of the filter plate and ends in the region of the outlet 5 in the squeezing piston 1 in the outer peripheral region of the filter plate. In the example shown in the figure, a spiral groove 9 having two starting points is shown.
0 and 11 exist in the annular groove 12, and the end points 13 and 14 of the spiral groove 9 exist in the collecting and discharging groove 15. As is known from FIGS. 2 and 3, the through hole 7 has a small cross section on the filter gauze side and a large cross section at the portion communicating with the spiral groove 9, as is known.

As is apparent from the drawing, the pitch of the helix is constant. In an excellent embodiment, the through hole 7
It is distributed at regular intervals along the spiral groove. However, for simplification of the drawing, the distribution state of the through holes 7 is not shown strictly at regular intervals. The excellent t-feature in which the spacing of the through holes 7 conveniently corresponds to the pitch of the helix is exactly correct in the drawing for the sake of clarity, as a result of the holes 7 being arranged in a mesh with a square mesh. Not shown. By providing a helix with many starting points, the length of the helical groove is reduced.

Thus, by arranging the through holes 7 in a mesh shape on the compression side, uniform compression of the cocoa paste can be obtained, and formation of the known pocket-shaped cocoa butter can be avoided. This drawback is especially noticeable in so-called forced pressing.

By connecting the spiral windings in the radial direction and additionally providing a limited number of radial grooves leading to the collecting and discharging groove 15, the pressing time can be further shortened. This seed radial groove is shown in FIG. 1 with reference numeral 16.

Reference numeral 17 designates a central hole for accommodating the means for fixing the filter plate. This kind of fixing means per se is known and will not be detailed here.

The function of the filter plate will be clear from its description and the above description of the squeezing press. By uniformly distributing the through holes 7 on the surface of the filter plate 4,
Cocoa butter can be squeezed uniformly, regularly and quickly, resulting in a shorter squeeze time. Through holes, spiral grooves, all radial groove dimensions, groove cross sections, spiral pitch and through hole spacing, etc., can be freely selected according to the press and paste to be pressed. You can By measuring the squeeze pressure, the amount of residual cocoa butter left on the cake can also be accurately set.

The cocoa paste has been described above for the sake of simplicity of explanation, but the scope of the present invention also includes squeezing of pastes of other seeds which are squeezed to extract oils and fats. It involves using the proposed filter.

[Brief description of drawings]

FIG. 1 is a plan view of a filter plate according to the present invention.

FIG. 2 is a sectional view taken along the line II of FIG.

FIG. 3 is an enlarged and detailed view of FIG. 2A.

FIG. 4 is a cross-sectional view of a known press for cocoa paste pressing.

[Explanation of symbols] 1: Piston part 2: Press room 3: Cocoa paste introduction section 4: Filter plate 5: Cocoa butter discharge pipe 6: Circular area under the filtration net storage 7: Through hole 8: Through-hole distribution surface of the filter plate 9: spiral groove 10, 11: Starting point of spiral groove (9) 12: annular groove 13, 14: End of spiral groove (9) 15: Collection and discharge groove 16: radial groove 17: Central hole for storing filter plate fixing means

Claims (7)

[Claims] 1. A filter plate for a cocoa paste squeezing press, which is connected to a pedestal for accommodating one or more filter screens on the filtration side and a discharge groove for the extracted cocoa butter on the distribution side. In a filter plate composed of a plate body having through holes, the through holes (7) communicate with spiral grooves (9) arranged on the distribution surface (8) of the filter plate (4). A filter plate characterized by that. 2. The spiral groove starts in the central region of the filter plate (4) and ends in the collecting and discharging groove (15) near the outer periphery of the filter plate (4). The filter plate described in. 3. The groove (9) in which the through hole (7) has a spiral shape.
The filter plate according to claim 1, wherein the filter plate is distributed at regular intervals along. 4. Filter plate according to claim 1, characterized in that the spiral groove (9) has a multiplicity of starting points. 5. The filter plate according to claim 1, characterized in that the spiral starting points (10, 11) of the spiral groove (9) are interconnected with an annular connecting groove (12). . 6. Filter plate according to claim 1, characterized in that a radial groove (16) is provided which is connected to the spiral groove and which leads to the collecting and discharging groove (15). 7. Filter plate according to claim 1, characterized in that the distance between the through holes (7) corresponds to the pitch of the helix (9).