JPH0223635B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a new and improved construction of an agitation device for paper stock or the like.

In its particular embodiment, the present invention provides an improved agitation device for papermaking raw materials or the like.
The present invention relates to a stirring device including a stirring member having at least one blade shaft located in a raw material tank and from which the blade shaft projects. The wing shaft is operatively connected to a motor drive by a drive shaft and pivots in a substantially circular path of travel about a central axis during operation.

This type of stirring device is covered by German patent no.
It is well known from No. 1913819. In this conventional device, the blade axis moves about a central axis that is arranged substantially parallel to the axis. This central shaft is supported by stepped bearings at the bottom of the tank and has transverse arms with bearings for the wing shafts. The stepped bearing arrangement of the center shaft and the lower shaft bearing of the wing shaft are located in the suspended material.

Said known stirring devices are relatively complex. Furthermore, bearings located within the suspended material are loaded in an undesirable manner.

For the above reasons, therefore, it is a principal object of the present invention to provide an improved construction of an agitation device for paper stock or the like, which does not have the above-mentioned drawbacks and limitations of the prior art.

Another object of the present invention is to provide a new and improved structure of a stirring device, which is simpler than known stirring devices;
The object of the present invention is to provide a structure which does not require bearings located within the suspended material and which has the additional advantage of, for example, being able to efficiently mix the liquid of the suspended material.

A further important object of the invention is to provide a new and improved agitation device for papermaking raw materials or the like;
Relatively simple in structure and design, very reliable in operation, less prone to damage or malfunction, requires minimal maintenance and maintenance, and is suitable for mixing and processing paper raw materials or similar materials The purpose is to provide a stirring device that has become similar to the above.

To achieve the above and other objects of the present invention, as will become apparent as the description progresses,
The stirring device of the present invention includes a tank for receiving papermaking raw materials, and at least one blade shaft disposed within the tank and having a plurality of protruding stirring members, the blade shaft being spaced apart from the center axis of the tank, and has center axes arranged substantially parallel to each other, the center axis of the wing shaft has a substantially circular movement passage around the center axis of the tank, and the wing shaft rotates about its center axis. The drive shaft is connected to the upper end of the blade shaft via a coupling device so that the blade shaft can perform pendulum-like movement, and the protruding stirring member is It is configured to have a plate shape extending radially outward of the wing axis. Further, in the stirring device of the present invention, there is provided a tank for receiving papermaking raw materials, at least one blade shaft disposed in the tank and having a plurality of protruding stirring members 12, and an upper end portion of the blade shaft around a predetermined axis. a drive device having a drive shaft for rotating the wing shaft so that the wing shaft rotates along a substantially circular movement path; It is configured to have a hanging suspension device.

Since the blade shaft is suspended from the drive shaft in a pendular manner, the use of stepped bearings or the like can be avoided.
During operation of the agitator, the blade axis tilts with respect to the vertical;
Good results are obtained because the mixing of the papermaking raw materials in the vertical direction is promoted.

According to one possible construction of the invention, the rotatable central shaft can be arranged on the central axis. The rotatable central shaft includes at least one radial arm in which a vertical drive shaft is disposed. A bearing arrangement for the central shaft is positioned above the level of the raw material in a tank operatively associated with the agitation device.

A drive motor with a transmission or gearing can be mounted on the radial arm member.
The output shaft of the transmission can be adapted to form a vertical drive shaft. In this way a simple and robust design is obtained and there is no need to provide a bearing arrangement within the suspended material.

According to another embodiment of the invention, the blade shaft can be operatively connected to a drive shaft, the drive shaft further comprising a drive motor, i.e. a transmission, and extending along the central axis of the substantially circular path of travel. connected to a drive motor located within. The output shaft of the drive device consisting of the drive motor and the transmission is arranged on the central axis. The drive shaft may be supported by a support ring member concentric with the central axis of the circular movement path. In this way a very simple construction is obtained, which is particularly suitable for small stirring devices.

Furthermore, a design is possible in which the drive shaft can be moved together with the drive motor along at least one substantially circular guide device arranged around the tank. In this case, a very simple construction is obtained, in which the tank does not need to be provided with a superstructure.

In all of the embodiments described above, the pivotable universal joint can be a universal joint. This also results in a very simple and operationally reliable design of the stirring device.

Furthermore, a weight or the like can be provided at the lower end of the blade or stirring shaft. This weight makes it possible to control the inclination of the axis relative to the vertical during operation of the stirring device.

the weight has the shape of a circular member;
Moreover, the radius can be made larger than the radius of the stirring member of the blade shaft. By doing so, it is possible to effectively prevent the blade shaft from hitting the stirring blade against the inner wall of the tank.

However, for the same purpose, the lower end of the wing shaft can practically be adapted to cooperate with a ring-shaped guide element.

Furthermore, the wing shaft is directly connected to a drive shaft positioned on the central axis of the substantially circular path of travel, and constituted by the output shaft of the drive device which is also located on said central axis. Can be done.

By means of the measures described above, it is possible to advantageously construct a particularly simple stirring device with a small number of components. Furthermore, due to the inclined position obtained by the lateral deflection of the blade axes, a more effective mixing or agitation of the tank contents takes place. This is especially due to the fact that a component force is generated towards the center of the tank.

Next, in order to make the present invention easier to understand and to clarify objects other than those mentioned above, a detailed explanation will be given with reference to the accompanying drawings. Like parts in the drawings are designated by the same reference numerals.

Referring now to the figures, for the sake of brevity, description of the illustrated stirring apparatus and associated tank or vessel construction is limited to the extent necessary to enable one skilled in the art to understand the principles of the invention. In the embodiment of the stirring apparatus shown in FIGS. 1-3, and particularly in FIG. 1, a tank or vessel 1 is provided which defines a vat for receiving the paper stock or the like to be processed. This raw material tank 1 has a substantially cross-shaped support structure 2, as shown in particular in FIG. A bearing or support 3 for a centrally arranged shaft member 4 is mounted on this cruciform support structure 2 so as to be freely rotatable. A radial arm member 5 is attached to the shaft member 4. This radial arm member 5
A drive motor 6 with a transmission or gearing 7 is arranged above, the drive motor 6 and the transmission 7 forming a drive. The output shaft 8 of the transmission 7 is connected to the floor or bottom 1 of the tank 1.
It extends substantially vertically downwardly towards a.
The shaft 11 of the vane is suspended in an oscillating or pendulum-like manner by a Cardan joint 10 of the output shaft 8 or an equivalent structure. This blade shaft 11 preferably has a protruding swirling element or stirring element 12, for example in the form of a stirring blade.

The wing shaft 11 is provided at its lower end with a weight 13 having a substantially circular body, the radius R of the weight being somewhat larger than the radius M of the stirring member.

The current supply to the drive motor 6 takes place through the conductor 14 by means of a slip ring head member 15 or an equivalent structure.

In the embodiment of the stirring device shown in FIGS. 1-3, if the electric drive motor 6 rotates the blade shaft 11 by means of the transmission 7, the raw material level N in the raw material chamber 16 in the tank 1 In addition to the stirring of the suspended raw material, a pivoting movement of the blade shaft 11 occurs around the central axis A in the direction of the arrow U in FIG.

As can be seen in particular from FIG.
The pivotable joint member formed by 0 is located above the suspended material level N contained in the tank 1.

As mentioned above, the weights 13 are provided to help maintain the vertical position of the wing shaft 11. The ratio of the radii R and M of the weight 13 and the stirring member 12, respectively, prevents the wing shaft 11 with the stirring member 12 from striking against the inner wall 1c of the tank 1.

Instead of the weight 13 or together with it in the lower end area of the wing shaft 11, a guide member as shown in FIG. 4 can be arranged. In the variant of the stirring device shown in FIG. 4, this guide device consists of two substantially ring-shaped rail members 16 which cooperate with the projecting lower end 11a of the blade shaft 11. In some cases, only one rail member 16 is required.

In the case of the embodiment shown in FIG. It is arranged to be located on the motion axis A. Drive shaft 22 is connected to output shaft 8 by universal joint 20 . The drive shaft 22 is connected to the blade shaft 11 at its lower end by a universal joint. The drive shaft 22 has a substantially cylindrical roller member 23 which rolls on a substantially circular guide member 24 supported in the upper region of the central support or column member 25 . The support member 25 is attached to the bottom 1a of the tank 1 in a suitable manner.
will be installed on the

In this case, when the agitation device operates, the blade shaft 11 performs a turning movement within the tank 1, and at this time, the roller member 23 rolls on the guide member 24. In all other respects the function and remaining structure of the stirring device shown in FIG.
- It is similar to the embodiment of the stirring device explained in FIG.

No. 7 showing a partially cut away cross-section of the device of FIG.
Another possible construction of the stirring device is shown in FIGS. In the device shown in particular in FIG. 7, a substantially circular or annular support or guide ring member 24 is mounted on the support structure 2. As shown in FIG. The roller member 30 of the guide member 31 rolls on a circular or annular support of the guide ring member 24 . The guide member 31 has a sleeve 32, within which the drive shaft 22 is rotatably guided.

This embodiment of the invention operates similarly to the embodiment of FIG. 5, but has the advantage that the inner support or post 25 may be omitted.

The embodiment of FIG. 6 also has the advantage that the entire support structure can be omitted, and the accessibility to the interior of the tank 1 is improved. In this case, two guide members 40, 41 are provided, which guide members are arranged concentrically with respect to the central axis A of the tank 1. The drive motor 6 and its transmission 7 have a roller element 42 which is adapted to be guided on an upper guide element 40 .
A drive shaft 22 is operatively connected to the output shaft 8 of the drive motor 6, and the drive shaft is further connected to the lower guide member 4.
A roller member 23 that rolls on the inner surface of the roller 1 is provided. The end of the drive shaft 22 is connected to the wing shaft 11 by a universal joint 10 or an equivalent structure.

It is to be understood that the invention may be subjected to various modifications without departing from its concept. For example, in the embodiment shown in FIGS. 1 and 2, a plurality of radial arms 5 are arranged at mutually different angular positions.
It can be made to have the following. For example, two arm members 5 can be provided which are offset at an angle of approximately 180 degrees with respect to each other. The pivotable joint 10 does not necessarily have to be a universal joint. Quite the contrary, different types of joints can be provided and, if necessary, only elastic elements can be provided. In the embodiment shown in FIG. 6, the guide elements 40, 41 can optionally be replaced by a single, suitably constructed guide element. The weight 13 attached to the lower end of the wing shaft 11 can be omitted, for example, if a substantially ring-shaped guide member 16 is used, as in the example of FIG.

[Brief explanation of drawings]

1 is a vertical sectional view of a raw material tank in the form of a vat for receiving the paper stock to be treated and using a first embodiment of the stirring device according to the invention; FIG. 2 is a view of the device shown in FIG. 1; FIG. 3 is a cross-sectional view of said apparatus taken substantially along the line of FIG. 1; FIG. 4 shows the apparatus of FIG. 1 with a stirring device of somewhat different construction. 5 and 6 are respectively partially cutaway sectional views of the upper end of the tank of the apparatus shown in FIG. FIG. 7 is a partially cut-away sectional view of the device shown in FIG. 5, but shows another possible construction of the stirring device; FIG. 7 is a cross-sectional view of the apparatus of FIG. 7, taken substantially along the line of FIG. 7; FIG. DESCRIPTION OF SYMBOLS 1...Tank, 2...Support structure, 4...Shaft member, 7...
Transmission device, 8... Output shaft, 10... Universal joint, 11...
Blade shaft, 12... stirring member.

Claims (1)

[Claims] 1. A tank 1 for receiving papermaking raw materials, and a plurality of protruding stirring members 12 disposed within the tank.
at least one wing shaft 11 having a diameter, the wing shaft 11 being spaced apart from the central axis A of the tank,
and have central axes arranged substantially parallel to each other, and the central axis of the blade shaft 11 has a substantially circular movement passage around the central axis A of the tank, and A drive device having drive shafts 8 and 22 for rotation about an axis is provided, and the drive shaft is connected to the upper end of the wing shaft 11 via a coupling device 10 so that the wing shaft can perform pendulum-like movement. A stirring device for papermaking raw materials, characterized in that the protruding stirring member 12 has a plate shape extending radially outward of the blade shaft 11. 2. The stirring device according to claim 1, wherein the drive device comprises a rotatable central shaft member 4 disposed substantially on the central axis A and at least one radially extending arm member 5. a central shaft member 4 having a central shaft member 4 and having said drive shaft 8 positioned substantially perpendicular to said arm member, said central shaft member 4 directing said rotatable central shaft member within said tank; and a bearing device for mounting at a position above level N of papermaking raw materials located at. 3. The stirring device according to claim 2, wherein the drive device is provided with a transmission device 7 and has a drive motor 6 mounted on the radial arm member 5, and the transmission device 7 is arranged vertically. A stirring device having an output shaft 8 defining a drive shaft. 4. The stirring device according to claim 1, wherein the drive device includes a drive shaft member 22 that connects the blade shaft, and the drive device is arranged substantially on the central axis of the circular movement path. a drive motor with a transmission 7, the drive shaft member being coupled to the drive motor with the transmission, the transmission being an output shaft defining and substantially driving the drive shaft; A stirring device having an output shaft disposed on the central axis. 5. The stirring device according to claim 4, wherein the drive device includes a support ring member arranged concentrically with respect to the central axis of the substantially circular movement path, and the drive shaft member A stirring device supported in a support ring member. 6. The stirring device according to claim 1, wherein the drive device includes: a drive shaft member operatively continuous with the drive shaft; and at least one guide device having a substantially circular shape; The drive device comprises a drive motor, and the drive shaft member 22 is movable together with the drive motor along at least one substantially circular guide device 40, 41 around the tank. A stirring device that has become popular. 7. The stirring device according to claim 1, wherein the pivotable joint device 10 is a universal joint. 8. The stirring device according to claim 1, wherein the blade shaft has a lower end, and a weight 13 is provided at the lower end of the blade shaft. 9. A stirring device according to claim 8, wherein the weight is in the form of a substantially circular member and has a diameter greater than the diameter of the stirring member 12 of the blade shaft. 10. The stirring device according to claim 1, wherein the blade shaft 11 has a lower end, and a substantially ring-shaped guide device 16 is adapted to cooperate with the lower end of the blade shaft. . 11 A stirring device for papermaking raw materials, comprising: a tank 1 for receiving papermaking raw materials; and at least one blade shaft 11 disposed within the tank and having a plurality of protruding stirring members 12.
and such that the upper end of the wing shaft pivots along a substantially circular path of movement about a predetermined axis;
The blade shaft has a drive device having drive shafts 8 and 22 for rotating the wing shaft, and a suspension device that suspends the wing shaft from the drive shaft to perform pendulum-like movement. Stirring device.