DE8806690U1 - Device for transporting and locking the plates of filter presses - Google Patents

Description

Coup 9430/88

Device for transporting and locking the plates of filter presses

The invention relates to a device for transporting and locking the plates of filter presses, which can be slid vertically hanging on horizontal guides, each plate having a locking hook on its upper edge which can be pivoted about a bearing pin, which engages over the bearing pin of the following plate and which can be unlocked by means of an actuator held on a transport means and can be moved above the plates, the unlocked plate being able to be pulled off the following plate by means of the transport means.

Such a device is known, for example, from DE-OS 35 33 384.

Based on this state of the art, the invention is based on the task of developing a generic

Coup 9430/88

to create a suitable device which, on the one hand, is simplified in terms of the locking system and, on the other hand, creates possibilities by means of which additional cleaning of the stripped plates can be achieved in a simple manner with a high degree of safety.

To solve this problem, the invention proposes that the transport means consists of a yoke that is mounted transversely to the plate conveyor path, above the plates, so that it can be moved on rails, which has hydraulic cylinders arranged at its free ends to the side of the plates and vertically, which have a length that is at least approximately equal to the plate height and a floating piston that passes through a longitudinal slot in the hydraulic cylinder with a driver, the drivers of the two pistons holding a stripping and spraying device arranged horizontally between the hydraulic cylinders, the stripping and spraying device also being able to move in the direction of withdrawal of the actuator, which

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The stripping and spraying device is arranged in front of the stack of plates when the last plate is removed from the stack of plates, and at such a distance that the side of the stripped plate facing away from the stack of plates can be painted over by the stripping and spraying device when this plate is transported.

The fixed connection or coupling of the stripping and spraying device to the transport means for the plates ensures that the stripping and spraying device can be activated at any point along the path of the stripped plate and the process for cleaning the plates and for their transport can run parallel, i.e. simultaneously

In addition, the spatial arrangement of the stripping and spraying device in the pull-off direction of the plate in front of the actuator transporting the plate ensures that when the carrier engages the last plate of the plate stack, the opening gap that forms when the plate is opened in front of the stripping and spraying device

Coup 9430/88

is arranged so that the falling filter cake cannot contaminate the scraping and spraying device.

The drive of the construction unit, which consists of the transport belt mounted on the yoke, hydraulic cylinders and the stripping and spraying device, can be carried out, for example, by means of a motor-operated chain or cable drive, whereby the drive should run alternately clockwise or counterclockwise to pull the panels off or to return from the deposit position to the receiving position of another panel.

The hydraulic cylinders with floating bearings Piston and longitudinal slot for passage of a Driver for the purpose of forced coupling with

the piston are in themselves state of the art known.

The stripping and spraying device can be moved, for example , by means of a slide on the hydraulic cylinders in their longitudinal direction , whereby the slide is guided over the longitudinal slot

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of the hydraulic cylinder is connected to the floating pistons. The passage through the slot of the hydraulic cylinder is of course sealed. In order to avoid the stripping and spraying device on the hydraulic cylinders becoming jammed or the guide of the stripping and spraying device on the hydraulic cylinders becoming jammed due to the slight advance of one or the other piston compared to the other, a further development provides that the hydraulic cylinders are held on the yoke by means of elastic bearings and their free ends are accommodated in guides with play that are attached to the yoke.

Because the hydraulic cylinders are held at the top, i.e. on the yoke, by means of rubber bearings, they can adjust themselves in this rubber bearing in such a way that jamming of the guide of the scraper and spray device on the hydraulic cylinder is avoided.

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The necessary play is also achieved by the fact that the free ends of the hydraulic cylinders, which are arranged relatively low down next to the plates or the plate press, are accommodated in guides with sufficient play so that

can follow the necessary compensating movements, so that jamming of the scraper and spray device on the hydraulic cylinders is avoided.

Of course, it is also possible to use pneumatic cylinders instead of hydraulic cylinders.

Preferably, it is further provided that the scraping device consists of two scraper strips that can be spread apart from one another by means of an actuator and that can be placed on the plate located at the front and rear in the direction of movement.

Preferably, the stripping device is moved upwards during the return movement of the complete transport unit from the deposit position to the receiving position of a new plate to be removed, so that the stripping and spraying device is arranged at or near the upper edge of the plate to be removed before another plate is removed from the plate stack.

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The scraper bars are spread out by means of a lever mechanism using an actuator so that they slide along the plate surface and can scrape off any filter cake or the like adhering to it.

Cleaning using the stripping device can also be carried out in a position in which the last stripped plate of the previously stripped plate

fcogenic plate is so close that by '

By spreading the scraper bars, both facing plate surfaces can be cleaned.

Furthermore, it is preferably provided that the spray device consists of spray pipes, which have spray jet openings directed towards the plates.

It is also preferred that the stripping and spraying direction extends over the entire width of the plates.

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line preferred further training is seen in

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φα &ugr; uaa iji.cxxg.i.xcu <. u &igr; unni^juxuLj &ldquor; w * ...&mdash; _.._.. §consists of a substantially elongated, two-armed lever which can be pivoted by motor about a bearing pin and which can be pivoted into a first position approximately parallel to the conveying path of the transport means assigned to it, in which its path of movement is free from The locking hook is pivotable into a second position about the bearing pin running parallel to the transverse extension of the slats, in which its end directed in the direction of the slab removal is set at the level of the bearing pin of a slat hook forming a driver and its opposite end part is connected to a side flank is applied to «another driver of the locking hook and lifts this into the unlocking position, which in a third position, while maintaining the contact with the further driver, can be placed with its edge lying at the front in the conveying direction against the driver formed by the bearing pin of the locking hook and the plate in conveyor

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direction, whereby each locking hook has a slope at the back in the transport direction of the plate &bull; ls starting slope for the driver (bearing pin).

This design allows for excellent functional reliability when removing and laying down the panels using simple construction parts.

It is also advantageous that the locking hooks of two adjacent panels are arranged laterally offset from each other.

An embodiment is shown in the drawings and described in more detail below. It shows:

tig. 1 a filter press including transport

and locking device as well as scraper and spray device in side view ;

Fig. 2 the same in front view?

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Fig. 3 shows a detail in an enlarged view;

Fig. 4 shows a detail of the detail according to Fig. in side view;

Fig. 5 another detail also in side view;

Fig. 6a-6h a detail in view.

The filter press is designated as a whole with 1. It has several plates 2, which in the working position are pressed against a fixed support 4 by a pressure plate 3. The filter press has a device for transporting and locking the plates 2, which is generally designated with 5. The device 5 is arranged vertically hanging on horizontal guides and can be moved by means of a motorized actuator. Each plate has on its upper edge a locking hook 7 which can be pivoted around a bearing pin 6 fixed to the plate, which engages over the bearing pin of the following plate and thus locks the plates together in the normal position. The locking hook 7 is attached to the transport means 5 and is arranged above the plates 2.

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movable actuator 8, whereby the unlocked plate 2 can be pulled off the following plate by means of the transport means 5.

In the exemplary embodiment, the transport means consists of a yoke 10 which is mounted transversely to the plate conveyor path above 4 plates 2 on rails 9 by means of an actuator and which carries at its free ends on the sides of the plates and vertically arranged hydraulic cylinders which have a greater length than the plate height. A piston (not shown) is arranged within the hydraulic cylinder 11, which can be acted upon by hydraulic fluid and thus adjustable in its relative position within the hydraulic cylinder. The piston passes through a longitudinal slot of the hydraulic cylinder 11, sealed by a driver, whereby the drivers of the two pistons hold a stripping and spraying device 12 arranged horizontally between the hydraulic cylinders 11.

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The stripping and spraying device 12 is arranged in front of the actuator 8 or the transport means 5, which pulls the last plate 2 from the plate stack (on the left in Figure 4) in the direction of removal of the latter, and at such a distance that the side of the pulled plate facing away from the plate stack can be covered by the stripping _and spraying device 12 when this plate 2 is transported. This ensures that when the gap between the last two plates is opened by pulling off the last plate, the filter cake cannot fall onto the stripping and spraying device 12 and contaminate it, but that the stripping and spraying device 12 is arranged outside the falling path of the filter cake.

The hydraulic cylinders 11 are mounted on the yoke 10 by means of elastic bearings 13, while their free ends are accommodated in guides 14 with radial play, which guides 14 have a U-shaped

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Frame 15 is attached to the yoke 10. This design ensures that the hydraulic cylinders are not rigidly connected to the yoke 10, but that they have a movement play that allows angular movements in their elastic bearing (for example rubber bearing 13) relative to the vertical axis. This ensures that the drivers of the scraping and spraying device 12 do not jam on the hydraulic cylinders 11 or the pistons connected to them do not jam in the hydraulic cylinders 11 even if the piston of one hydraulic cylinder 11 is slightly ahead or behind the other piston of the other hydraulic cylinder. As can be seen in particular from Figure 5, the scraping and spraying device 12 consists of two scraper bars 18 which can be spread apart from one another by means of a hydraulic or pneumatic actuator 16 by means of an adjusting lever 17 and which are held on the lever part carrying them by means of springs 19 in a resiliently flexible manner.

The scraper bars 18 are moved from the retracted position (Figure 5 shown on the left) to the

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spread position (Figure 5 right) so that in the retracted position they can be moved past the plate without touching it even when the plate 2 is coupled to the transport device and can only slide past the plate in the spread position with the ends of their scraper bars on the surface or with a small distance from the surface of the corresponding plate.

Furthermore, the stripping and spraying device has spray pipes 19, which have spray jet openings directed towards the adjacent plates. The stripping and spraying device 12 extends over the entire width of the plates 2. The driver of the stripping and spraying device, which is connected to the piston of the hydraulic cylinder, is preferably designed in the form of a slide guide 20.

The function of the plate transport is described in more detail in the drawing figures 6a to h. The actuator 8 is, for example,

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Figure k shows that it is moved into different positions by means of a pneumatic cylinder, which are described in more detail below.

In the drawing figure 6a, a plate is shown on the right with a locking hook 7 that can be pivoted about a bearing pin, which plate is arranged in the storage position. For reasons of space, the distance between this plate 2 and the still connected plates 2 on the left is only shown to be small. In reality, this distance is considerably larger, as can be seen from the other drawing figures. According to the invention, the actuator 8 for unlocking the plates 2 consists of a substantially elongated lever that can be pivoted by motor, for example by means of a hydraulic cylinder 22, about a bearing pin 21 held on the transport means 5, the hydraulic cylinder being connected to the actuator via a bearing pin 23, which bearing pin is located at the rear end of the quasi-

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A two-armed lever actuator is arranged.

In the return position, the actuator 8 is aligned parallel to the conveying path of the transport means S assigned to it, so that the movement path of the actuator 8 is free of drivers of the locking hooks 7, which drivers are formed by pins protruding laterally from the flanks of the locking hooks in the form of the bearing pin 6 and the driver. As can be seen in particular from Figures 2 and 3, the locking hooks 7 of the plates 2 immediately adjacent to one another are arranged laterally offset from one another, so that their movement is not hindered by the other locking hook.

|)The drivers 24 and 6 protrude laterally so far %b that they can be influenced by the actuator 8 guided laterally next to the locking hooks 7, but the actuator 8 is not hindered on its path of movement by the locking hooks 7 themselves.

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The actuator, for example through the

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spatially next to the locking hooks at a distance from the free ends of the drivers 6 and 24, so that there is no obstruction here by the locking hooks or their drivers. As soon as the actuator 8 has reached the position according to Figure 6a, which position can be sensed by contactless proximity switches, for example, the actuator 8 is raised to the position according to Figure 6b by raising the rear end of the actuator 8 in the pull-off direction by the hydraulic cylinder 22. The actuator 8 rotates around the bearing pin 21, rests with its side flank on the driver 24 of the groove hook 7 and lifts it from the locking position into the unlocking position, which is shown in Figure 6b.

The other end of the actuator 8 is lowered accordingly so that its opposite end part 25 is provided with a corresponding

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The contact edge is arranged at the same height as the driver.

The transport device 5 now moves, taking the unlocked plate 2 with it, in the direction of the deposited plate (shown on the right in the drawing), whereby the end edge 25 of the actuator 8 runs against the driver 6 and at the same time the driver 24 is still held in contact with the flanks of the actuator 8. When approaching the already deposited plate 2, the driver 6 runs against the edge 26 of the locking hook 7 of the deposited plate, which is designed as a run-on slope, lifts this locking hook according to drawing figure 6d and moves in the direction of the deposited plate until the moved plate 2 is placed against this already deposited plate and the locking hook 7 falls into the locking position via the bearing pin 6. This position is shown in figure 6e.

The transport device then moves back towards the still locked plate

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package (left in the drawing), whereby during the path from the position according to Figure 6f the actuator 8 is pivoted back into the position according to Figure 6h, in order to then reach the position according to Figure 6a again and repeat the process mechanism. This process continues until the last plate has been removed. The entire plate package is then returned to the starting position by the actuator 27 using the pressure plate 3.

The stripping and spraying device 12 is actuated in such a way that the stripping and spraying device 12 is moved relatively upwards when the actuator has reached the position according to Figure 6a.

The stripping and spraying device can now either be moved downwards simultaneously, beforehand or afterwards before the removal movement of the corresponding plate in order to clean the surface of the plate 2u.

Preferably, the scraping and spraying device moves downwards when

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the scraping and spraying device is arranged between a plate 2 that has already been laid down and the plate 2 to be placed on it in such a way that the scraping strips 18 can coat both surfaces of the plates 2 that face each other.

The invention is not limited to the embodiments, but is variable in many ways within the scope of the disclosure.

All new individual and combination features disclosed in the description and/or drawing are considered essential to the invention.

Claims (1)

PATENT ATTORNEYS .^ ,·,*·. .*..·' ' .4»*»oak: CONRAD KÖCHLING CONRAD-JOACHIM KÖCHLING Fleyer Straße 135. 5800 Hagen Note: H. Putsch GmbH. & Comp. Call (02331) 81154 + 85333 Frankfurt Telegrams: Patent Codification Hagen rranKrurter Accounts: Commarzbank AQ. Hagen 5800 Haßen (Bank code 450 400 42)3915 085 ^8<!UX Sparicnaa Hagen 100012043 ■ Pocuchedc Dortmund BW-480 __________ VNR: 11 58 51 _fd . _No . 9430/88 CJK/G. 20 May 1988 Protection claims: 1. Device for transport and locking of the plates of filter presses, which can be moved vertically hanging on horizontal guides, wherein each plate has on its upper edge a locking hook which can be pivoted about a bearing pin, which engages over the bearing pin of the following plate and which can be unlocked by means of an actuator held on a transport means and movable above the plates, whereby the unlocked plate can be pulled off the following plate by means of the transport means, characterized in that the transport means (5) consists of a transverse to the plate ..VOO $ Coup 9430/88 conveyor path above the plates (2) on rails (9) movably mounted yoke (16) which has hydraulic cylinders (11) arranged vertically and south of the plates (2) at its free ends, which have a length at least approximately corresponding to the plate height and a floating piston which reaches through a longitudinal slot of the hydraulic cylinder (11) with a driver (e.g. 20), whereby the drivers of the two pistons hold a stripping and spraying device (12) arranged horizontally between the hydraulic cylinders, whereby the stripping and spraying device (12) is arranged in front of the actuator (&) in the direction of removal movement of the actuator (&) which removes the last plate (2) from the plate stack, and at such a distance that the side of the removed plate (2) facing away from the plate stack is not moved by the stripping and spraying device (121) when this plate (2) is transported. can be painted over . Coup 9430/88 - 3 &mdash; 2. Device according to claim 1, characterized in that the ^hydraulic e-cylinders (11) are held on the yoke (10) by means of elastic bearings (13) and their free ends are received with play in guides (14) which are fastened to the yoke (10). 3, Device according to claim 1 or 2, characterized in that the stripping device consists of two scraper strips (18) which can be spread apart from one another by means of an actuator and which can be placed on the plate (2) located at the front and rear in the direction of movement. 4. Device according to one of claims 1 to 3, characterized in that the spray device consists of spray tubes (19) which have spray jet openings directed towards the plates (2). Coup 9430/88 3. Device according to one of claims 1 to 4, characterized in that the air inlet and spray device (12) extend over the entire width of the plates (2). 6. Device according to one of claims 1 to 5, characterized in that the actuator (8) for unlocking the plates (2) consists of a substantially elongated two-armed lever that can be pivoted by motor about a bearing pin (21), which can be pivoted into a first position approximately parallel to the conveying path of the transport means (5) assigned to it, in which its movement path is free of drivers (6, 24) of the locking hook (7), which can be pivoted into a second position on the bearing pin (21) running parallel to the transverse extension of the plate, in which its end (25) directed in the direction of plate removal is at the level of the bearing pin (6) of a locking hook (7) forming a driver. &bull;is set and its opposite end part Coup 9430/88 with a side flank is placed on a further driver (24) of the locking hook (7) and lifts this into the unlocking position, which in a third position, while maintaining the contact with the further driver (24), can be placed with its edge (25) lying at the front in the conveying direction against the driver formed by the bearing pin (6) of the locking hook (7) and takes the plate (2) along in the conveying direction, whereby each locking hook (7) has a slope (26) at the rear in the transport direction of the plate (2) as a starting slope for the driver (bearing pin (6). t. Device according to one of claims 1 to 6, characterized in that the locking hooks (7) of two adjacent plates (2) are arranged laterally offset from one another.