JPS6258760B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of Application The present invention comprises a lower base which accommodates the cleaning material and which allows water to pass through and a lower pusher which can be inserted into the container and which can be moved up and down in the container. The present invention relates to a device for dehydrating washed items in a cylindrical container having an upper compression mold having a plate.

PRIOR TECHNOLOGY In the previous known device (DE 32 28 512), the bottom of the cylindrical container was designed as a counterpressure plate, which was oriented laterally to draw off the water forced out of the wash. It has many grooves.
The necessary compression pressure is generated by a compression die, the plate of which is lowered into the container from the top. The push plate pushes the wash onto the counter pressure plate at the bottom, so that the water pushed out in that zone drains away.

The device according to DE 32 28 512 has a mechanical dewatering of the wash material as well as a fluid dewatering device. In this device, during the dewatering phase, compressed air is passed to the wash in a container by means of a compression mold or plate.

Problems to be Solved by the Invention It is an object of the invention to improve said apparatus by increasing the dewatering efficiency with gentle treatment of the wash material.

Means for solving the problem This object is solved by the features of claim 1.

According to the invention, therefore, within the scope of mechanical dewatering of the wash material present in the container, the water is not only drawn off at the bottom or on the counterpressure plate in the lower zone of the container, but is actually compressed in the upper zone of the container. It is also derived above the pressing mold or its pressing plate. Due to this double dewatering, the efficiency of the dewatering press is significantly increased, especially during the initial phase of mechanical dewatering. Approximately 40% of the water forced out of the wash is discharged into the upper zone of the container, ie above the push plate. The amount of residual water remaining after the dehydration of the washed material (washed cake) is significantly reduced compared to known methods. A further improvement, in particular a gentler treatment of the washings, is achieved by the fact that by dewatering on both sides the compaction is formed more slowly in the case of mechanical dewatering (wash cake) than in the case of dewatering only downwards. This is obtained (in the same proportions with respect to the charging speed of the compression mould, etc.), and that the air inclusions that occur in the container during washing of the washing article can likewise be discharged upwards and downwards together with the water. Preferably, for the formation of compression, an elastically deformable compression polster arranged on the underside of the push plate exerts the stiffening effect. This is because the compressed polster presses against the generally uneven upper contour of the wash articles present in the container and applies pressure evenly.

In a particularly preferred embodiment of the invention, the water outlet opening of the push plate leading to the outside has a tube sleeve, which enters a common collecting pipe, in particular an annular pipe, arranged in the upper part of the push plate. Furthermore, this collecting tube or annular tube is connected to the elastic outlet tube of the rubber tube by means of a connecting sleeve.

The drainage of water through the tube sleeve or the ring tube can be centrally blocked and can be adjusted in particular by time. For this purpose, an adjustable closure valve is arranged in the outlet tube or in the connecting sleeve.
Furthermore, each pipe sleeve is equipped with a check valve,
This valve prevents the backflow of fluid media (water, air) from the outside into the container.

The dewatering of the upper zone of the container is furthermore effected according to the invention only during the initial phase of mechanical dewatering.
After this initial phase, the removal of water is interrupted in the upper zone of the container and is only further removed by means of the counterpressure plate in the lower part.

The device according to the invention preferably corresponds to the device according to DE 32 28 512, although in this case fluid dewatering is indeed advantageous.
Not necessarily necessary. Based on the double mechanical dewatering according to the invention, satisfactory results regarding residual moisture are obtained even without additional flow dewatering.

In the device with fluidized dewatering according to DE 32 28 512 A1, compressed air is introduced into the container by means of a push plate. According to the invention, however, compressed air is introduced into the upper dewatering system only in the final phase of the operation. The result is that the water present in the upper drainage device (pipes, pipe sleeves) is forced out of this. Fluid dewatering and mechanical dewatering by means of an upper drainage system are therefore carried out in temporary overlap.

If the drainage of water from the upper drainage system has to be carried out in a device without flow dewatering, this is of course possible if the air supply pipe or groove in the plate is connected to a device for generating compressed air. It is.

The elastically deformable compression polster is preferably designed as a plate made of elastic plastic foam. Particularly suitable for this purpose are compressed polyurethane foams having a volumetric weight of 700 to 800 kg/m ³ . The elastic compression polster has a diameter of approx.
A number of holes with 10 mm, especially 6 mm, are arranged. The holes lead to the underside of the push plate, which is provided with air and water channels.

Alternatively, the compressed polster is preferably designed as a hollow body filled with liquid or gas, which is bounded at the top by a push plate. In this construction of the compression polster, elastic rubber tubes are used to enable, on the one hand, the drainage of water from the interior of the container above the compression die, and, on the other hand, the passage of compressed air into the container for fluid dewatering. The filling hollow body opens from the push plate to the bottom side. The medium inside the hollow body may be under pressure, so that the elastic wall (membrane) of the hollow body remains under residual stress.

EXAMPLES The present invention preferably comprises German Patent Publication No.
It may also be used in conjunction with a dewatering press according to specification 3228512.

Therefore, the object to be washed 10 is housed in a cylindrical container 11. The container is stationary so as to move up and down on the lower counterpressure plate 12. In order to drain the water in the lower zone of the container 11, the counterpressure plate 12 is provided with a water drain groove 13 on its upper surface.

The cleaning material 10 is mechanically dewatered in a container 11 by means of a compression mold 14, the pressing plate 15 of which enters the container 11, which is open from above, and sinks therein. A push plate 15, which substantially closes the internal cross-section of the container 11, compresses the washing object 10 by means of a compression cylinder (not shown) on a piston rod 16. In this case water is mechanically removed from the wash (mechanical dewatering). Most of the water leaves the container 11 via the counterpressure plate 12 or the water outlet channel 13.

In this dewatering device, water extruded from the object 10 to be washed is discharged from the upper side facing the counterpressure plate 12 (upper dehydration). For this purpose, the push plate 15 is provided with many water drainage holes, which allow the push plate 15 to
It becomes possible for water to flow to the upper part through the . The water drainage holes are formed by pipe sleeves 17, which are arranged in several pieces, for example five, on the push plate 15 with equal distances from each other, so that water and air can flow into them. Continuity occurs. The tube sleeve 17, which is open downwards, is therefore located at the upper end of the collecting conduit, i.e. at the push plate 15.
It is connected to an annular tube 18 which separates above and extends concentrically thereto. An outlet pipe 19 is further coupled to the annular pipe 18 .

This conduit is made at least partially elastic (rubber tube) so that it can follow the up and down movement of the push plate 15. The outlet tube 19 is connected to the annular tube 18 via a connecting sleeve 20 .

The dewatering of the upper part by means of the push plate 15 or the removal of water and optionally air can be adjusted. For this purpose, an adjustable closure valve 21 is arranged in the coupling sleeve 20 in this case. This makes it possible to prevent water and air from being discharged to the top. The closure valve 21 is preferably timed (by clock) so that drainage to the top is only effective during the first phase of the dewatering process.

A check valve 22 is arranged in each pipe sleeve 17 . This check valve is designed in such a way that the flowing medium can be discharged to the outside, ie in the direction of the annular pipe 18, but on the contrary, the flow into the container 11 from the outside is only interrupted. . Check valve 2
2 is present on the top of the push plate, ie outside the (closed) container 11.

Preferably, the use of an upper dewatering system is coupled to a mechanical flow dewatering as described in DE 32 28 512 A1. Compressed air is introduced into the vessel 11 for flow dewatering by means of the bore 16a of the annular piston rod 16. The check valve 23 of the push plate 15 is
Compressed air can enter the container, but the flow is configured in the opposite direction, ie, it is cut off to the outside. Flow dewatering or supplying compressed air into the container 11 is carried out for about 4 to 10 seconds, in particular 5 seconds, for upper dewatering.
The operation is temporarily interrupted by supplying compressed air with the open blockage valve 21 for a second. As a result, the drainage from the upper part can be blown through with compressed air in a short period of time. Then, the occlusion valve 21 is closed.

The push plate 15 has an elastic compression polster 24 on its lower side.
It is equipped with It consists of a plate-shaped plate, in particular polyurethane foam. compression polster 2
4 are formed with a number of holes 25, which provide water and air communication from the container 11 to the tube sleeve 17, and from the compressed air conduit in the piston rod 16 of the push plate 15 to the interior of the container 11. It becomes possible to conduct compressed air to. The underside of the pusher plate 15 is formed with a groove 26 which extends in a suitable manner and opens downwards, forming a flow path between the compression polster 24 and the pusher plate 15.

Double, i.e. upper and lower drainage, water approx.
% is discharged by the upper zone, i.e. the push plate 15, and 60
% is derived by the lower zone, ie the counterpressure plate 12. In addition, the upper drainage makes it possible to discharge the trapped air, which occurs when the cleaning product is poured into the container and when the compression mold is introduced into the container, together with the water.

A preferred alternative formation of the push plate 15 with compressed polsters 24 is shown in FIGS. 2-4. In this case, the compressed polster is designed as a hollow body 27. An elastic membrane, in particular made of rubber or rubber-like plastic, is connected to the outer edge of the push plate 15 all the way around in such a way that elastic side walls 28 and likewise an elastic bottom wall 29 are formed. The side wall 28 is connected to the side surface 30 of the pusher plate 15 by a fixing ring 31 having an angular cross section that surrounds the upper edge of the side wall 28 and presses against the side surface 30. Outside of this,
A push plate 15 on which a protrusion 32 on a side wall 28 is appropriately formed.
It's in the groove.

In the embodiment according to FIG. 2, the hollow body consists of a passage chamber 33, which is filled with a liquid, for example water. Liquid (or gas, as the case may be) may be filled into the chamber under high pressure, so that the elastic walls of the hollow chamber 27 are under residual stress. Filling and discharging into or from the hollow chamber 27 is carried out via a connecting filling pipe 35 and a valve 36.
This is done through the hole 34 of the push plate 15 having a diameter.

Further lines, at least an air line 37 and one or several water lines 38, communicate with the push plate 15 and the hollow space 27. These conduits 37, 38 are designed to be deformable, in particular as rubber tubes. The push plate 15 has associated holes 39, 40. These holes connect outside the hollow space 27 to the pipe sleeve 17 of the embodiment according to FIG. 1 or to a further air supply pipe 41 or water outlet pipe 42.

The (elastic) conduit enters a concentric distribution device formed as a distribution plate 43. This distribution plate is inserted into a recess 44 in the bottom wall 29 of the membrane and is additionally fastened with a projection 45. The distribution plate 43 is preferably made of bronze, brass or stainless steel.

A flat, slit-shaped distribution chamber 46 is formed inside the distribution plate. This is connected by conduits 37, 38. A number of holes 47 are arranged on the outside (i.e. towards the interior of the container 11), which results in a sufficient distribution of the air sucked in during fluid dewatering and also in the dewatering by compression molds. Maximum working capacity is possible.

Side walls 28 and bottom wall 29 are preferably formed with different wall thicknesses. That is, the side walls 28 are thick (eg 20 mm) and the bottom wall 29 is thin (eg 12 mm).
As a material, rubber having a shore of 55 to 60 is suitable.

The distribution plate 43, which consists of an upper wall 48 and a lower wall 49, has a total thickness, for example 35 mm, in which case the upper wall 48
is 20 mm thick, the distribution chamber 46 is 10 mm thick, and the lower wall 49 is 20 mm thick.
Simply make the thickness 5mm. The diameter of the distribution plate 43 is the diameter of the container 11 of 850 mm, preferably 300 to 350 mm.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of the dehydrating device, FIG. 2 is a vertical sectional view of another embodiment of the dehydrating device, and FIG.
The figure is an enlarged view of the joint between the membrane and the pusher plate shown in FIG. 2, and FIG. 4 is an enlarged view of the distribution plate shown in FIG. 2. 10...Washing object, 11...Container, 12...Counter pressure plate, 1
3... Lead-out groove, 14... Compression mold, 15... Push plate, 1
6... Piston rod, 16a... Hole, 17... Pipe sleeve, 18... Annular pipe, 19... Leading pipe, 20... Connection sleeve, 21... Blocking valve, 22, 23... Check valve, 2
4... Compression polster, 25... Hole, 26... Groove, 27
... hollow body, 28 ... side wall, 29 ... bottom wall, 30 ... side surface, 31 ... fixed ring, 32 ... protrusion, 33 ... passage chamber,
34...hole, 35...filling pipe, 36...valve, 37...air conduit, 38...water conduit, 39...hole, 40...hole,
41...Air supply pipe, 42...Water outlet pipe, 43...
Distribution plate, 44...notch, 45...protrusion, 46...distribution chamber, 47...hole, 48...upper wall, 49...lower wall.

Claims (1)

[Claims] 1. A cylinder with an upper compression mold having a lower base that accommodates the cleaning material and allows water to pass through, and a lower pressing plate that can be loaded into the container and can be moved up and down in the container. In an apparatus for dehydrating washed items in a shaped container, a press plate 15 has tube sleeves 17 and 40, and a compression polster 24 which is elastically deformed and has a water discharge hole on the underside of the press plate is connected to the compression mold 14. When the container 1 is lowered and mechanical pressure is applied to the object to be washed, container 1
1. A device for dewatering washed items, the device being arranged in such a way that the water present in the upper zone of 1 is drawn upwards via a compression die 14 that moves downwards. 2 The water outlet hole of the push plate 15 belongs to a pipe sleeve 17 leading to the outside, which sleeve has an elastic outlet pipe 1
9. Apparatus according to claim 1, in combination with 9. 3 The pipe sleeve 17 has a collecting pipe above the push plate 15,
3. Device according to claim 2, characterized in that it is connected to an annular tube 18 arranged concentrically with respect to the push plate 15, to which an outlet tube 19 is connected. 4. Device according to claim 1, characterized in that a non-return valve (22) is arranged in the pipe sleeve (17), which valve prevents the ingress of fluid medium from the outside into the container (11). 5 In the outlet tube 19 or in the connection sleeve 20 of the outlet tube 19 connected to the annular tube 18, a time-adjustable closure valve 21 is provided during the initial phase of mechanical dewatering in the upper zone of the compression die 14. 5. The device according to claim 1, wherein the device is arranged to regulate the withdrawal of water occurring only in the water. 6 The compression mold 14 has compressed air communication holes 16a, 3
9, whereby, in particular, during the final phase of the removal of water from the upper zone of the compression mold 14, the water is discharged by means of compressed air from the tubes, conduits of the compression mold for 4 to 10 seconds, in particular for 5 seconds. 6. A device according to any one of claims 1 to 5, wherein the device is capable of: 7. The device according to claim 1, wherein the compressed polster 24 consists of a plate made of elastic plastic, in particular of highly compressed polyurethane foam. 8 Water outlet is connected to hole 2 with elastic compression polster 24.
Claim 1 formed by:
The device according to any one of paragraphs 7 to 7. 9. Claims 1 to 8, in which an open groove 26 communicating with the water discharge hole of the push plate 15 is formed on the underside of the push plate 15 relative to the compression polster 24.
The apparatus described in any one of the preceding paragraphs. 10. The device according to claim 1, wherein the elastic compression polster 24 is formed as an elastic deformable hollow body 27 filled with liquid or gas. 11 The hollow body 27 is connected to the support plate 15 on the sides and at the bottom and has walls (side walls 28, bottom wall 2) made of an elastic material, in particular rubber, polyurethane plastic, etc.
9). Device according to claim 10, characterized in that it is formed by: 9). 12. Any of claims 1 to 10, wherein the water discharge hole is formed by the hole 47 and the elastic water conduit 38 in the compressed polster 24 formed from the hollow body 27. The device according to item 1. 13. The compressed air passage hole is formed by the hole 39 and the elastic air conduit 37 in the compressed polster 24 formed from the hollow body 27. The device according to any one of the items. 14 The water conduit 38 and the air conduit 37 connect to a distribution device opening into the interior of the container 11 in the zone of the bottom wall 29 of the hollow body 27, in particular a flat internal distribution chamber 46 and the side facing the container 11 (lower wall). 49) into a distribution plate 43 having a number of holes 47.
The device according to any one of items 1 to 13. 15 Rigid distribution plate 43, preferably made of metal
However, the hollow body 27 is formed by vulcanization, especially the hollow body 27
15. The device according to claim 14, wherein the device is fixed in a cutout 44 of the bottom wall 29 of the device.