US3631565A - Feeding device for pulpy masses in the form of a cell pump, particularly for sausage filling machines - Google Patents

Abstract

A feeding device for pulpy masses of the type of a bucket pump with radially guided feeding wings disposed in an eccentric rotor, which comprises a pump housing having a wall. A radially movable control disc subjected to pressure and determining the position of the feeding wings. The control disc has a guiding groove. A guide bolt and a spring-biased spring bolt extend into the guiding groove. The spring-biased spring bolt supports itself on the control disc by means of an oblique deviation face, and means are provided in the pump housing for setting from the outside a radial pressure effective on the control disc by means of the spring bolt.

Description

[72] Inventor Johannes Muller Biberach am Riss, Germany [21] Appl. No. 35,812 [22] Filed May 8, 1970 [45] Patented Jan. 4, 1972 [73] Assignee Firma Albert Handtmann, Metallgiesserei Biberach am Riss, Germany [54] FEEDING DEVICE FOR PULPY MASSES IN THE FORM OF A CELL PUMP, PARTICULARLY FOR SAUSAGE FILLING MACHINES 3 Claims, 3 Drawing Figs.

[52] US. Cl 17/37 [51] Int. Cl A22c 11/08 [50] Field of Search 17/37, 35, 32

[5 6] References Cited UNITED STATES PATENTS 475,367 5/1892 Wassermann 17/37 2,837,762 6/1958 Azzinietal. 3,543,330 12/1970 Muller Primary Examiner-Lucie H. Laudenslager Attorney-Ernest G. Montague ABSTRACT: A feeding device for pulpy masses of the type of a bucket pump with radially guided feeding wings disposed in an eccentric rotor, which comprises a pump housing having a wall. A radially movable control disc subjected to pressure and determining the position of the feeding wings. The control disc has a guiding groove. A guide bolt and a spring-biased spring bolt extend into the guiding groove. The spring-biased spring bolt supports itself on the control disc by means of an oblique deviation face, and means are provided in the pump housing for setting from the outside a radial pressure effective on the control disc by means of the spring bolt.

PATENTEU JAN 4 I972 SHEET 1 OF 2 In venfor g l PATENTED JAN 41972 3531.565

sum 2 [1F 2 FEEDING DEVICE FOR PULPY MASSES IN THE FORM OF A CELL PUMP, PARTICULARLY FOR SAUSAGE FILLING MACHINES The present invention relates to a feeding device for pulpy masses of the type of a bucket pump, particularly for sausage filling machines, in general, and to such feeding device with radially guided feeding wings disposed in an eccentric rotor, the position of the feeding wings being determined by a radially movable controldisc and subjected to pressure, which control disc is equipped with a guide groove, into which a guide bolt and a spring bolt charged by a spring pressure extends, which spring bolt supports itself on a control disc by means of an oblique face, in particular.

The occurring radial forces of the feeding wings are assumed by the guide bolt, so that they cannot influence any more the position of the control disc, whereby improvements concerning the effect are obtained. Furthermore, the forced guide of the guide bolt brings about, that the displacement force exerted by spring pressure to the control disc extends with safety only in the direction required for the function of the pump, namely against the wings to be pressed on.

Since also the spring bolt, as well as the guide bolts are equipped with flattened portions, it supports itself likewise in a guide groove, so that it participates on the assumption of pressure and guidance of the control disc.

It has been shown, however, that the pressing of the pump wings against the housing wall with about constant spring pressure, depending upon the prevailing circumstances, in particular concerning the characteristics of the feeding medium, does not result always in the desired favorable ratio between density effect and friction, so that the feeding device still requires in this direction an improvement.

In the copending Pat. application Ser. No. 726,815, filed May 6, 1968, now Pat. No. 3,543,330, issued Dec. 1, 1970 a feeding device for pulpy masses of the type of a bucket pump is disclosed, wherein in the housing chamber of the pump, a joint receiving element is centrally inserted, on which the feeding wings support themselves in radial direction. By this arrangement, a nonobjectionable sealing wing of the feeding wings relative to the housing wall is obtained and the unavoidable wear of the wings of the housing wall is compensated for, whereby the disadvantageous occurrences are removed and the production is simplified.

Within a further development of the structure disclosed in said copending patent application, a device, for example a screw, is disposed in the housing with which a radial pressure can be set from the outside effective on the control disc by means of the spring bolt. By this arrangement, it is possible to dosage the engagement pressure of the pump wing such, that the friction between the wing edge and the housing is reduced to a minimum, whereby, however, the required sealing effect can still be maintained.

Since the axis of the spring bolt extends parallel to the axis of the rotor, it is of advantage for structural reasons to transmit, in accordance with the present invention, the force of the adjustment screw over an oblique deflection face onto the spring bolt, whereby a pressure spring is inserted into the force path which charges the control disc in radial direction.

Since the adjustability of the pressure force can be finally stepped up in case of a suitable design of the screw, in accordance with the variation of the present invention, the arrangement can be made such, that the pressure spring supports itself on the housing and serves for the following of the spring bolt only upon release of the screw, so that the pressure force of the screw is effective directly upon the control disc. By this arrangement, in an advantageous manner, a more exact adjustment on the engagement pressure is obtainable to the operating conditions, in particular because the indifferent effect of the spring is excluded, so that the actual engagement pressure on the adjustment screw is more clearly recognizable.

With these and other objects in view, which will become apparent in the following detailed description, the present invention, which is disclosed by example only, will be clearly understood in connection with the accompanying drawings, in which:

- an enlarged scale; and

FIG. 3 is another embodiment of the structure disclosed in FIG. 2.

Referring now to the drawings, the present invention includes substantially the same or similar elements disclosed in the copending US. Pat. application Ser. No. 726,815 now US. Pat. No. 3,543,330 of the inventor. As clearly shown in FIG 1, the four feeding wings 41a, 41b, 41c and 41d support themselves on the inner wall of the pump housing 42, and in addition on a control disc 43. The other wings indicated in point-dotted lines move with slight play between their guide faces, so that the actual friction points are limited to the wings 41a to 41d.

The control disc 43 is equipped with a radial groove 45, into which the guide bolt 46 having flattened portions 47 projects. This guide bolt 46 is secured in the pump cover 48 and serves for guidance of the radially movable control disc 43, as well as for reception of the pressure forces transmitted from the feeding wings and indicated in FIG. 1 by arrows.

The permanent pressure force is exerted upon the control disc 43 by means of a spring bolt 60 guided in the cover 48, the flattened portion 51 of the spring bolt 60 projecting likewise into the guide groove 45.

The spring bolt 60 supports itself over an oblique deviation face 52 on the control disc 43 and is continuously charged by a spring 61 in the arrangement disclosed in FIG. 2. The spring 61 supports itself on a pressure member 62 likewise guided in the cover 48, which pressure member 62 is in forced connection with the adjustment screw 65 by means of an oblique deviation face 63 and an intermediate member 64.

The screw 65 is operable in the pump cover 48 or in another housing part and makes it possible to exert on the control disc 43, an adjustable, resilient force pressing the wings 41a, 41b, 41c and 41d onto the housing.

Referring now again to the drawings, and in particular to FIG. 3, the arrangement differs from that of FIG. 2 substantially by the fact that the pressure spring 66, engaging the pressure member 62, does not support itself on the pressure member 62, rather on the housing cover 48. By this arrangement, the pressure of the adjustment screw 65 is effective by means of the members 64, 62 and 60 directly on the control disc 43. The spring 66 serves here only for the following of the members 62 and 64, if the screw is rotated in the releasing direction.

While I have disclosed several embodiments of the present invention, it is to be understood that these embodiments are given by example only and not in a limiting sense.

I claim:

1. A feeding device for pulpy masses of the type of a bucket pump with radially guided feeding wings disposed in an eccentric rotor, comprising a pump housing having a wall,

a radially movable control disc subjected to pressure and determining the position of said feeding wings,

said control disc has a guiding groove,

a guide bolt and spring-biased spring bolt extending intosaid guiding groove,

said spring-biased spring bolt supporting itself on said control disc by means of an oblique deviation face, and

means, provided in said pump housing, for setting from the outside a radial pressure effective on said control disc by means of said spring bolt.

2. The feeding device, as set forth in claim 1, which includes means for transmitting the force of a setscrew onto said spring bolt by means of an oblique deviation face, and

a pressure spring is inserted into the path of said force and loading said control disc in radial direction.

3. The feeding device, as set forth in claim 2, wherein said pressure spring supports itself on said pump housing, and serves for adjusting of said spring bolt upon release of said pressure setting means.

Claims (3)

1. A feeding device for pulpy masses of the type of a bucket pump with radially guided feeding wings disposed in an eccentric rotor, comprising a pump housing having a wall, a radially movable control disc subjected to pressure and determining the position of said feeding wings, said control disc has a guiding groove, a guide bolt and a spring-biased spring bolt extending into said guiding groove, said spring-biased spring bolt supporting itself on said control disc by means of an oblique deviation face, and means, provided in said pump housing, for setting from the outside a radial pressure effective on said control disc by means of said spring bolt.

2. The feeding device, as set forth in claim 1, which includes means for transmitting the force of a setscrew onto said spring bolt by means of an oblique deviation face, and a pressure spring is inserted into the path of said force and loading said control disc in radial direction.

3. The feeding device, as set forth in claim 2, wherein said pressure spring supports itself on said pump housing, and serves for adjusting of said spring bolt upon release of said pressure setting means.

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