JP2010260048A - Housing for process engineering machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a structure of a smallest machine having all functional phases like a machine of a large structural form, and capable of handling simply despite constitution made of minimal members as far as possible. <P>SOLUTION: A housing for a process engineering machine which is receptive to a working room provided with a driving device and a working part, a material-supplying part, and a product-discharging part is characterized in that at least one housing part has a polygonal form, and in that a housing wall having a different thickness charges itself with a different function in a plurality of cylindrical holes. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to housing shapes for process-engineered machines, particularly minimal machines, that improve manufacturing and assembly and handling for the user.

  Only a small amount of material can often be used to develop innovative products and their manufacturing processes. This is because the amount of these materials is very expensive and partly also highly effective. For product development and process development, a machine having an increasingly smaller process space is required. Such machines, however, must on the other hand have all the components of a large machine. And it is impossible to arbitrarily reduce the size of such a machine, and this requires new manufacturing techniques and new structural features. This is especially true for machines in process engineering for dry and wet processing methods such as mills, mixers and classifiers.

  Several solutions for minimal machines such as small agitator mills are known on the basis of EP 1185371 A1. This solution solves the problem that arises in special cases, such as avoiding air intrusion into the mill, but how to make a complete set of machines, here process engineering machines, It does not suggest at all that it can be constructed and manufactured in a very small form of configuration and can be easily handled by the user. Typically, small and medium structural machines are manufactured as monoblocks. If the monoblock construction type is used even in the smallest machine, it becomes a very clunky heavy machine. This is because the goal in this case is to realize all the machine elements and the necessary connections by machining in one workpiece.

EP1185371A1

  Therefore, the object of the present invention consists of as few members as possible, but has the minimum machine configuration that has all the functional aspects of a large structural machine and can be easily handled. Is to make it possible.

  In order to solve this problem, in the configuration of the present invention, at least in a housing for a process engineering machine that receives a working chamber having a driving device and a rotating working portion, a material supply portion, and a product discharge portion. One housing part had a polygonal basic shape, so that different thickness housing walls assumed different functions in the cylindrical holes.

  The housing of a process-engineered machine according to the invention comprises, for example, a machine drive, a working chamber with a rotating drive part, and a device for material supply. The housing is used in particular for dry and wet processors, such processors include, for example, mills, classifier mills, cutting mills, classifiers, mixers and even compactors.

  The housing has at least one polygonal outer contour. Due to the polygonal shape, the housing part with the cylindrical bore has different wall thicknesses which are functional carriers. The wall thickness can be used to provide a connection for supplying cleaning air or cooling water. The wall thickness can receive mechanical components such as injection nozzles. Also, a hopper for material supply can be incorporated into the housing part without the need for additional components. This minimizes the number of components for such a minimum machine. The thin wall section can serve as a coupling surface for another machine component or device part.

  With minimal machines, the clamp cannot be used as a coupling element on the basis of the large space required for mounting the clamp due to lack of space.

  As an alternative, the housing part and the machine component are fixed by having a fitting member in which these members are pressed together. The outer fitting member is provided with a threaded hole. These threaded holes serve to receive threaded pins with conical ends. The inner fitting member is provided with a conical recess with respect to the threaded hole. With this configuration of components, the housing part or machine component can be secured as desired.

  In addition to the housing part, the coupling surface for another machine or other device component can also be formed with a polygonal contour, and when configured in this way, the coupling surface can also be another machine or other It is possible to have an advantage that the apparatus constituent members can be mounted univocally and uniquely.

  The polygonal shape for the housing and the coupling surface is advantageously a polygon with an odd number of corners, in particular a triangle. In this case, the corners of the polygon can be rounded and chamfered, and the surface can likewise have a radius of curvature, i.e. it can be curved. Advantageously, a molded body P3G according to DIN32711 and a molded body P4C according to DIN32712 are used.

  The polygonal outer contour of the housing part is produced by turning or cutting, and the polygonal inner contour is preferably formed by wire erosion. The polygon inner contour forms a press fit with the polygon outer contour, which after press fit forms an object that is equivalent to monoblock manufacturing and is advantageous for pharmaceutical use. Since this object shape imparting (polygonal shape) prevents the introduction of rotational motion after joining, the press-fit portion of this object need only prevent sliding in a direction perpendicular to the rotational motion. This object has only a degree of freedom in the axial direction when joined. Once this degree of freedom is determined by the device or measurement, it is possible to create chambers or holes that are angled with respect to one another by partially fabricating the green parts.

  In order to realize various machine components in one housing, it is necessary to join a plurality of housing parts by shrink fitting. According to the invention, at least one housing part has a polygonal shape. If the housing parts to be combined have a corresponding polygonal outer or inner polygonal contour, these housing parts must be combined in a non-rotatable manner on the one hand and in a unique mounting position on the other hand. Can do. Furthermore, the individual housing parts can already be provided with holes and functional carriers prior to combination.

  The polygonal shape has a functional surface that can be easily assembled and disassembled by rotational movement. This is because, in this case, the rotational moment can be advantageously introduced, unlike a cylindrical member which can only be introduced via frictional forces.

FIG. 5 shows a raw part assembled from a plurality of housing parts with an inner polygonal contour or an outer polygonal contour. FIG. 4 shows a two-part housing with a coupling surface and a functional carrier. FIG. 6 shows a machine housing in section through the area of the coupling element.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a raw part 1 for a housing of a minimal machine, taking a classifier head as an example. In the example shown, the green part 1 consists of a central part 2 and a lateral part 3. The outer contours of both parts are polygons, and in the illustrated case, they are triangles with rounded chamfered corners and edges. The inner contour of the central part 2 likewise has an equal polygonal contour. The green part 1 is caused by a shrink fit between the central part 2 and the transverse part 3. The polygonal outer contours 4, 5 are preferably produced by turning and grinding. Based on this, pins 6 projecting on both sides are formed in the central part 2 and the lateral part 3, and these pins 6 have centering holes 7 for receiving between the tips and for rotational entrainment. A planar portion 8 is provided. The polygonal inner contour 9 is advantageously generated by wire erosion (Drahterodieren).

  FIG. 2 shows a housing 10 completely machined from the green part 1 shown in FIG. The work chamber 11 can be seen in the center at the cross-section. A fitting member 13 for receiving a structural group consisting of a drive unit provided with a cleaning air supply chamber 14 and a fine material discharge unit, a chamber 12 which is rotationally symmetrical on both sides in a lateral direction with respect to the working chamber 11. 15 are formed. In order to fix the drive part and the fine substance discharge part, a threaded hole 16 for receiving a pin is provided in the lateral part in the region of the thick part of the polygonal contour. For fixing and supplying cleaning and working air, a polygonal flat portion on the side is provided with a central fixing hole 18 and a plurality of holes 19 arranged in a ring shape around the center. A square receiving pocket 17 is machined in the central part 2. The hole 20 penetrating straight leads to the ring-shaped cleaning air supply chamber 14. A hole 22 rising at a right angle from the hole 21 forms a connection portion with the drive nozzle receiving chamber 23. Similarly, the hole 24 forms a connection for sending working air to the lower part of the mill or classifier. This eliminates lines or hoses that extend outside the machine. A supply hopper 25 having a supply pipeline 26 leading to the working chamber 11 is incorporated in the upper part of the unprocessed part 1. A cylindrical turning 27 is provided in the lower part of the housing for receiving the lower part of the mill or classifier.

  FIG. 3 shows a coupling element for securing machine components together. This coupling element 28 consists of a screw with a conical end, instead of a bulky clamp coupling member. Due to the special shape, the components are not only firmly connected to one another, but also the components are properly aligned with one another by the conical end of the threaded pin. In many cases, one fixing element is sufficient.

  DESCRIPTION OF SYMBOLS 1 Raw part, 2 Center part, 3 Lateral part, 4,5 Polygon outer contour, 6 Pin, 7 Centering hole, 8 Plane location, 9 Polygon inner contour, 10 Housing, 11 Working chamber, 12 Chamber, 13 , 15 fitting member, 14 cleaning air supply chamber, 16 threaded hole, 17 receiving pocket, 18 fixing hole, 19 air hole, 20, 21, 22 hole, 23 driving nozzle receiving chamber, 24 hole, 25 supply hopper, 26 Supply line, 27 Turning part, 28 Threaded pin

Claims (11)

  A housing for a process engineering machine for receiving a working chamber with a drive and a rotating working part and a material supply and a product discharge part, wherein at least one housing part has a polygonal shape A housing for a process engineering machine, characterized in that the housing walls of different thickness assume different functions in the cylindrical holes.   The housing of claim 1, wherein the housing is a housing for a mill, a classifier or a mixer.   The housing according to claim 1 or 2, wherein the polygonal shape is a polygon having rounded chamfered corners and curved side surfaces.   The housing according to any one of claims 1 to 3, wherein the polygonal shape is a triangle having rounded chamfered corners and curved side surfaces.   5. The housing according to claim 1, wherein the connection points for the other device parts and / or the housing parts are formed in a polygonal shape.   Housing walls of different thickness receive a plurality of machine components, in particular drive nozzles and / or hoppers for material reception, and / or cleaning air, cooling water supply and / or discharge, 6. A housing according to any one of claims 1 to 5, which serves to receive.   7. The housing wall of different thickness has a line for operating medium, in particular a line for grinding air, washing air and / or cooling water, machined therein. The housing according to any one of the above.   8. The housing according to claim 1, wherein the thin-walled part is a connecting surface for another machine component, device part or holding frame.   9. The housing according to claims 1 to 8, wherein the housing has a threaded hole in the wall thickness for receiving a conical threaded pin for securing the housing part and / or the machine component. The housing according to any one of the above.   10. A housing according to claim 1, wherein the housing consists of at least two housing parts joined by shrink fitting.   11. The housing according to claim 1, wherein the polygonal shape of the housing part or the coupling surface constitutes a mounting position for univocally and uniquely mounting the machine component.

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