JPS6332518B2 - - Google Patents

Description

[Detailed description of the invention]

TECHNICAL FIELD The present invention relates to a cleaning device for shelving, which has a processing chamber and is provided with a coupling for the introduction of cleaning fluid and compressed air, and an air distributor connected to the compressed air coupling is arranged near the bottom. The problem of not including particulates in injection solutions has constantly increased in importance in recent years. Investigations have shown that a substantial portion of the particles in glass bottles closed with rubber or plastic closures are based on these closures. The reason for this is that commercially available dishwashing devices, which generally act like ordinary drum-shaped devices or common domestic washing machines, do not guarantee satisfactory cleaning of the dishes. Devices of this type inevitably produce a scrubbing effect due to the high mechanical action during cleaning. This scrubbing action cannot sufficiently wash away the particles that have gathered compactly in the cleaning device. Furthermore, this device also does not adequately remove particles that initially adhered to the screen. Known improvements in cleaning action have recently devised commercially available devices in which compact clusters of strands are loosened by air blowing in a swirling bed manner in order to provide as strong a cleaning as possible of each single strand. This known device comprises a generally cylindrical container in which a cage for receiving the containers is arranged and which essentially acts as a processing chamber. A nozzle ring is placed near the bottom of this container. This nozzle ring is connected to a source of pressurized air and serves to create an eddy bed. Various studies have shown that such devices are suitable only for small shears and relatively small groups of shears. With large shears and therefore with large chamber cross-sections, especially with weight shears, a sufficient spiral rise of the shears is no longer guaranteed, so that the cleaning action of this device is insufficient. SUMMARY OF THE INVENTION An object of the present invention is to provide a drain cleaning device that has an even higher cleaning effect. In particular, the device is also suitable for heavy shears and large shear groups. The problem on which the invention is based can be solved by the device according to claim 1 of the present specification. The use of the double screen as an air distributor according to the invention results in a uniform pulsating air flow over the entire cross section of the room. This air flow exerts a particularly good eddying effect on the shear. Embodiments of the cleaning device of the present invention will be described in detail below with reference to the accompanying drawings. As shown, the cleaning device includes a generally cylindrical processing chamber 21 closed at the top by a removable dome-shaped head 22. As shown in FIG. At the bottom of the chamber, there is a valve 1,
2, 3, 4, 5, 6, 7, 13 and cleaning liquid provided with filter F, fresh water excluding mineral substances, air,
There are conduits leading in and out of the cleaning agent, silicone oil and steam. The head 22 has valves 12 for steam release, air release and connection to a vacuum source,
A conduit with 10 and 11 leads therethrough. A conduit 23 equipped with two valves 8, 9, a heat exchanger W and a circulation pump A runs from the lower edge of the head 22 to the valve 1 and serves to circulate the cleaning liquid. Further pumps B, C serve to introduce cleaning agent and silicone oil. Two liquid level sensors D ₁ , D ₂ are provided for certain functional drainage controls. A wall of the chamber 21 is provided with a hole 24 for loading and unloading the container to be cleaned, which can be closed freely. Charging takes place, for example, by gravity and by means of a suitable slope in the chamber. After cleaning, the sheets can be removed from the chamber by vacuum. The chamber is likewise supplied by vacuum action. In addition, loading and unloading can be carried out by placing the tube in a container with holes punched all over, which can be placed indoors and taken out again after treatment. In the chamber 21, near its bottom, there is an air distributor 25 in the form of two fine mesh screens 25a, 25b arranged at a slight distance from each other. Both mesh screens 25a, 25b are made of fine steel mesh having a mesh hole diameter of about 10 to 30 μm. The mutual spacing between the screens 25a and 25b is about 30 mm. Such air distributors are described in more detail in U.S. Pat. No. 4,023,472. A strong protective net 26 with a large mesh is provided on both sides of the net to protect or support the relatively easily damaged net.
a, 26b (mesh pore diameter of about 500 μm or more) are arranged. Furthermore, the upper edge of the cylindrical chamber portion is closed by another large mesh upper edge mesh 27 (pore diameter 1000 to 2000 μm). Therefore the upper screen 27 and the air distributor 25
Alternatively, the protective net 26a forms a unique processing chamber in which cleaning of the cage and the like are performed. Air distributor 25 with both protective nets 26a, 26b
The mesh 27 can also be formed as a structural unit. In this case, a basket-shaped cleaning container is formed which can be placed entirely within the chamber 21 and into which the containers to be cleaned are placed. The performance of the device is similar to known devices of this type. The following table illustrates a progression chart for a cleaning cycle that can be performed by the device. The various valves and pumps are controlled by corresponding electronic controls. The implementation of such controls is evident from the following progress chart.

【table】

[Table] As can be seen from the above table, for example, during the cleaning phase, the cleaning fluid is circulated and at the same time compressed air is introduced into the processing chamber. The compressed air remains in the air distributor 25 until the overpressure exceeds the outlet pressure of the very fine air distribution network, then it is distributed over the entire chamber cross section and flows upwards. The continuous application of the blowing pressure produces pulsating air from the screen. This pulsating air serves to very effectively raise the coil above the air distributor in a spiral manner. The threads in the cleaning medium can then be kept in continuous motion by a very small amount of air. Actual measurements have shown that a significantly better cleaning effect can be obtained in this way than with known devices. In order to obtain a favorable eddy bed, the height of the indoor sheath layer should not be substantially greater than 15 to 18 cm at rest. The actual air flow rate is approximately 20 to 25 m ³ / for a chamber diameter of approximately 1000 mm.
It is hr. In this case, the cleaning fluid flow rate is approximately 60/
It is min. The double-mesh air distributor according to the invention is not intended in its own sense only for the generation of swirling beds during the cleaning phase. This distributor also improves the distribution and action of the steam introduced during, for example, the dipping stage and the silicone coating stage. The steam also acts at the same time to cause the helical to rise in a spiral manner, similar to that obtained in other treatment sections with air. Although the present invention has been described above in detail with respect to its embodiments, it goes without saying that the embodiments can be modified in various ways without departing from the spirit of the invention.

[Brief explanation of the drawing]

The accompanying drawing is a diagrammatic layout of one embodiment of the cleaning device of the present invention. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13... Valve, 21... Processing chamber, 22
...Processing chamber head, 24...Charging/unloading hole, 25
a, 25b...Screen, 25...Air distributor, 26a, 26b...Protection net, 27...Upper edge net, A, B, C...Pump, _D1 , _D2 ...Liquid level sensor, F...Filter.

Claims (1)

[Scope of Claims] 1. A cleaning device for washing machines having a processing chamber, comprising a coupling for supplying cleaning fluid and compressed air, and in which an air distributor connected to the compressed air coupling is arranged near the bottom, The air distributor comprises at least two parallel spaced apart
A cleaning device characterized by comprising two mesh screens. 2. The cleaning device according to claim 1, wherein the mesh screen is a mesh having a fine mesh. 3 The hole size or mesh diameter of the mesh screen is 50μ
3. The cleaning device according to claim 1, wherein the cleaning device has a diameter of less than 100 μm, in particular 10 to 30 μm. 4. Any one of claims 1 to 3, wherein a protective net with a larger mesh diameter is disposed at least on the side opposite to the chamber bottom of the air distributor.
Cleaning equipment as described in Section. 5 The mesh diameter of the protective net is at least 300 to 500μ
The cleaning device according to claim 4, which is m. 6. Any one of claims 1 to 5, wherein the mesh screen has an interval of 1 to 5 cm.
Cleaning equipment as described in section.