Abstract
A vibromixer for mixing liquids, or liquids with gases or solids, consists of a container made of flexible plastic and a drive shaft comprising a mixer plate situated on the lower end of the drive shaft, wherein the container is supported in a support container.
Claims
1. A vibromixer comprising an oscillating drive shaft (2), for mixing liquids, liquids with gases or solids, including a container (6) made of flexible plastic and a drive shaft (2) comprising a mixer plate (9) situated on the lower end of the drive shaft (2), wherein the container (6) is supported in a support container (5), wherein the container (6) is provided with a flexible inner tube (7)in the interior of the container (6), sealingly with the wall of the container (6) in the upper areawhich is integrally connected to the mixer plate (9) and encloses the drive shaft (2), wherein the vibromixer comprises a removable support tube (12) made of plastic or steel, and the inner tube (7) is protected from the oscillating drive shaft (2) during the operation by the support tube (12).
2. The device as claimed in claim 1, wherein the drive shaft (2) is connected in its upper portion via a detachable clamping connection (3) to a vibration drive (1).
3. The device as claimed in claim 1, wherein the connection between the container (6) and the inner tube (7) via the flange (8) made of plastic is welded, bonded, or clamped.
4. The device as claimed in claim 1, wherein the connection between the inner tube (7) and the mixer plate (9) made of plastic is welded, bonded, or clamped.
5. (canceled)
6. The device as claimed in claim 1, wherein the drive shaft (2) carries a mixer plate (9) made of plastic and is detachably connected thereto.
7. The device as claimed in claim 1, wherein the shaft (2) can be connected to and released from the mixer plate (9) from outside the inner tube (7) and the container (6) with the aid of a tool or a mechanism (13).
8. The device as claimed in claim 1, wherein the upper end of the inner tube (7) and the container (6) is detachably connected to the clamping device (11) via the flange (8).
9. The device as claimed in claim 1, wherein the vibration drive (1) and the drive shaft (2) can be installed from the bottom, wherein the mixer plate (6) including the inner tube (7) and the connecting shaft (2) can also be clamped from the bottom, in a mirror-image arrangement.
Description
[0014] Wherein:
[0015] FIG. 1 shows a longitudinal section of the vibromixer according to the invention comprising a disposable container, and
[0016] FIG. 2 shows a longitudinal section of a detailed representation of the detachable connection to the mixer plate.
[0017] In FIG. 1, a vibration drive is represented with the reference sign 1. A drive shaft 2 is connected, in a known way, to the vibration drive 1 with the aid of a clamping connection 3 and is fastened on the support container 5 with the aid of a centering element 4. This fastening 4consisting, for example, of a steel spring, tensioning lines, or a diaphragm made of elastomerspermits the guidance of the shaft 2 along the longitudinal axis of the support container 4, wherein the oscillating, vertical motion is not impeded. The container (disposable container) 6, the wall of which consists of flexible plastic, is connected to an inner tube 7 made of flexible plastic and is sealingly connected at the container wall via a flange 8 made of rigid plastic and at a mixer plate 9 made of rigid plastic. The container 6, filled via the inner tube 7 with the medium 10 to be mixed, is supported by the support container 5 and is held in form and is detachably fixed on the support container 5 at the flange 8 in the upper area with the aid of a clamping device 11. A hollow support tube 12 made of plastic or metal is inserted through the inner tube 7 and is also fixed on the clamping device 11. The drive shaft 2 can now also be inserted into the support tube 12 and connected to the mixer plate 9 via a detachable connection 13.
[0018] In FIG. 2, the connection between the mixer plate 9 and the drive shaft 2 is shown. The connecting mechanism according to the invention, consisting of a hollow drive shaft 2, an impact or pulling element 14 (referred to in the following as a plunger) as well as several clamping bodies 15, is inserted from above through the inner tube 7 into the mixer plate 9. This is to be carried out without friction, since greater loads on the flexible plastics are to be avoided during installation. In order to fix the drive shaft 2 on the mixer plate 9, the clamping bodies 15 are spread and pressed into the inner groove of the mixer plate 9. For this purpose, a mechanism is utilized, which makes it possible to spread and fasten the clamping bodies 15 through the hollow drive shaft 2 from outside the inner tube 7, preferably from above the container 6. The spreading of the clamping bodies 15 is carried out with the aid of a plunger 14, wherein two variants for the locking and fastening thereof are provided. (A) The plunger 14 is provided with an extension which, guided through the hollow drive shaft 2, can be fixed on the upper end outside the inner tube 7, for example, with the aid of a thread or a screw connection. (B) The plunger 14 is provided with a thread or a screw connection in the lower area within the hollow drive shaft 2 and is locked with the aid of a removable tool (not represented) from above the inner tube 7 through the hollow drive shaft 2. For both variants (A and B), the plunger 14 can also be released again in the same way, wherein a trouble-free release of the connection is made possible by way of the selected angle of the clamping bodies 15 and the inner geometry of the mixer plate 9 after the plunger 14 has been loosened. The selected length measurements for the inner tube 7, the drive shaft 2, and the support tube 12 are selected in such a way that there is no direct contact between the support tube 12 and the mixer plate 9. During normal operation, the mixer plate 9 oscillates, driven by the vibration drive 1 and the connected drive shaft 2, with an amplitude of 2 mm to 5 mm; the support tube 12 is fixed on the support container 5, however, and undergoes no active motion. The oscillating motion is therefore absorbed by the inner tube 7 in the proximity of the mixer plate 9, wherein this can be optionally supported by a damper material 16 made of elastomers or foamed plastics. The function of the support tube 12 consists in absorbing the pressure of the medium 10 to be mixed on the inner tube 7 and preventing the contact of the flexible tube to the drive shaft 2 and the contact of the mixer plate 9 to the support tube 12.
