DE2847734A1 - Filter press with automatic opening - having carriage on toothed track with pick=up lever which also unlocks clamp on on next plate to be picked up - Google Patents

Abstract

Filter press has two carriages mounted on toothed rails running along the side of the plates, the plates being clamped together by a hydraulic ram. One carriage has a pickup arm in the form of a lever which fits behind projections on the sides of each plate and moves them in turn to the other side of the press for cleaning etc. The other carriage has a fork which slots onto the projection on the next plate and holds it while the one in front is pulled away. The pickup arm on the first carriage is a pivotted lever which tilts when the carriage is moved back against the next plate. This serves to depress the cylinder controlling the fork locked onto this plate and thus to release it. The carriage on which the fork is mounted then moves back and locks onto the next butone plate. The front carriage then extracts the next plate. For use as filter presses. Automatic opening presses are known as described in parent patent. The system here described is much simpler in concept and more reliable in operation.

Description

"Filter press"

The invention relates to a filter press in which to open a or several trolleys for transporting the ones that can be suspended or standing on rails Filter plates next to or above the filter plates, preferably with a hydraulic drive are movable, on which a pivotable driver lever is arranged, the can be set up for pulling behind the respective plate to be moved, and in which a locking cylinder acting in the vertical direction in each case on the The plate following the plate to be withdrawn can be set up and fixed according to Patent (patent application P 27 41 659.7).

This is used as a bunting, membrane or flaming filter press Devices for solid-liquid separation of sludge or the like., The multiple filter press arranged one behind the other is used in the flegel hydrate wiped closed After the separation process, the panels lose their grip be moved apart to remove the filter cake a disk transport device has been proposed1 in the case of transporting the Filter plates one or two carriages or carriages hanging or standing on rails are movable. A hydraulic cylinder is arranged on such goods wolbenstange is connected to a driver lever, each behind the to be moved Plate can be set up. U.N.' to prevent the subsequent plates from being peeled off a locking cylinder acting in the vertical direction is attached to the carriage, whose piston rod with an attached fork encompasses the arm of a filter plate is movable.

The is supported to transport each plate in the opening direction Carriage on the closed filter plate pack, its piston rod moves the one to be withdrawn Plate in the direction of opening.

Then the locking cylinder is retracted and through further extension of the piston rod is this cylinder with the carriage under the Move to the next plate to be locked.

The piston rod is used to transport the following filter plate retracted again, with a carrier lever connected to it behind the Set up the support arm of the next plate to be moved.

The procedure of a search trolley with a hydraulic cylinder has proven in practice to be not very precise and in some cases to be prone to failure, the partially imprecise set-up of the trolley leads to malfunctions and incorrect switching guided. Hydraulic cylinders can only be inadequately designed for the stated purpose proceed exactly, in addition, the carriage must after completion of the transport of all panels be moved back into the starting position by an additional device.

The additional invention therefore has the task of avoiding these disadvantages and equip the transport trolley with a precisely controllable drive automatic backward movement of the car, a precise set-up of the locking mechanism to reach the cylinder.

To solve this problem of the invention, the filter press is therefore marked Dunh one with a motor, preferably with a hydraulic motor, reversible driven, on a horizontal rack or the like. guided transport trolleys and by another on the same guide displaceable, the locking cylinder receiving carriage, which can be moved in a controlled manner via the first carriage.

The one receiving the locking cylinder, free on the rack displaceable carriage is equipped with a braking device that acts in the direction of displacement equipped and can be controlled according to the facility.

According to a special embodiment of the invention, both are carriages when a distance from each other is reached, which corresponds to the constant displacement path of the Plates corresponds to one another in a force-locking manner in the pulling direction, for example via a pull rod with a stop, a pull rope or a pull chain.

A hydraulic motor that drives the wheels of the truck is very precisely controllable. The displacement of the carriage with cogwheels on a rack allows an extremely precise set-up of the trolley to the respective plates to be peeled off. The trolley moves the locking cylinder receiving second car, which does not have its own drive. However, could also the second car can be controlled and equipped with a self-propulsion system.

Ratt a hydraulic motor can also be technically equivalent Use pneumatic drives or electric gear motors. Analogously applies also this exchange for the hydraulically acting locking cylinder. There in Usually, however, filter presses of the type mentioned here already have a hydraulic device equipped, it seems particularly advantageous to use hydraulic drives, which are fed from the already existing central hydraulic system can.

Awake of a preferred embodiment. of the invention are both vases the Kilterprease Via a coupling device that can be read in a vertical direction can be advertised with each other. A claw provided on the locking carriage can be used For coupling, a corresponding lug on the trolley engages over these resiliently The held claw can be connected to the piston rod of the locking cylinder via a linkage be connected. At the same time, a clamping piece can be placed on the coupling device his, which when lifting the claw against the rack with his toothed The end is movable.

This coupling device that is in action with each removal process is set, has its special meaning only in the process of the two Carriage after removing the last filter plate. It is at this stage too It is important that the driver lever on the trolley is controlled in the opening direction the plates can be folded over, so that the trolley drives past the drawn-up Plates is possible. In the position of the two cars driven together, the by a tension spring in a vertical position erectable drive lever of a The locking bolt on the locking carriage is halved in a horizontal position.

The invention is described below on the basis of illustrated exemplary embodiments explained in more detail.

Es XeSen: Figures 1 - 3 the two cars in respective front views on individual filter plates of a filter press in different displacement or. Locking positions, 4 shows a schematic representation of the front view of two other cars a displacement and locking device, and FIG. 5 shows an associated plan view to Fig. 4.

Reference is first made to FIGS. 1-3. The one with the number 1 designated filter plate of a filter press, not shown, is with her Lateral arm 11 slidable on lateral rails or spars 2. To open of the filter plate pack, the plates 1, 1 ', 1' '... one after the other in the direction of the arrow 1 and 2 are withdrawn from the trolley 4, respectively with its swivel Driving lever 43 behind the arm 11 one Such a trolley is equipped with gears 41 on a plate Rack 3 guided precisely. Other guides are also possible. To the drive a reversible hydraulic motor 42 is used, the speed of which is controllable, Another carriage 5 is also slidably placed on the rack 3, which receives a locking cylinder 6 acting in the vertical direction. in the Embodiment, this carriage is freely movable without its own drive. It However, it is also possible to provide this car with its own drive, which is linked to the carriage 4 for control purposes. The carriage 5 can move in the direction of displacement Acting braking device 51 have, which the slow movement of this car to set up under the corresponding filter plate. The fixing of the locking carriage 5, which can be moved on its tooth edges 52, takes place via a double-acting locking cylinder 6. On its piston rod 61 sits behind directed above a fork 62, which when the piston rod is raised, the respective Arm 11 engages around a filter plate and thus the entire subsequent filter plate package holds on. A clamping piece 63 is attached to the downwardly directed piston rod 64, which is drawn against the rack 3 when the fork 62 is moved vertically is, whereby the fixing of the carriage 5 is achieved.

As shown in FIG. 2, the trolley 4 moves each filter plate by a constant path in the opening direction. As soon as the respective plate is in the Open position arrives, takes place via limit switches, stops or the like. a change of direction of the hydraulic motor and thereby the backward movement of the transport trolley 4.

A corresponding hydraulic circuit causes the fork 62 of the Locking cylinder 6 moved back and the clamping fit of the clamping piece 63 on the rack 3 is also released.

If all the filter plates have moved into the open position, see above the trolley 4 must be driven past the entire plate package in order to the closing, which is done in the usual way by a hydraulically driven pressure plate takes place to enable. For this purpose, the driver lever 43 on the trolley 4 is after Driving through an empty path forwards with a suitable mechanical device or electromagnetic type possible, so that the driver lever pivoted forward can be passed under the bearing arms. With this method of the transport trolley beyond the constant displacement path of the plates, it also becomes the locking cylinder receiving car 5 taken along, after the closure of the to reopen of the filter package must be set up again on the second filter plate. In addition are the two cars 4 and 5 when reaching a distance from each other that the constant displacement of the plates corresponds to each other in the pulling direction frictionally kepoelt. For this purpose, a driving rod is provided on the trolley 4 parallel to the rack 3 7. tm distance from the end of the carriage 5 of a displacement length is a driver at the end 71 provided. This driver pulls the carriage 5 in the opening direction in its foremost Position, namely in the position in which the second filter plate of the closed entire filter package is locked. The locking carriage 5 is with a Sliding guide 53 placed on the driver rod 7. Through this tour The rod 7 slides when the carriage 4 is moved.

Another type of coupling is shown in the embodiment according to FIGS. 4 and 5. In this case too, the one with the toothed wheels 141 on the rack 2 slides Transport carriage 104 driven by its hydraulic motor 142 the braked locking carriage 105 controlled by limit switches under the second filter plate of the closed filter package. The corresponding braking device 151 expediently only acts against the Displacement device while the device on its gears 152 movable in Zugrich Locking carriage 105 is freely movable.

After the appropriate establishment of the locking carriage 105 is controlled, the piston rod 161 of the locking cylinder 106 is extended and engages for locking with its end fork 162 the corresponding arm of the filter plate, so with Remove the plate arranged in front of the filter when there is no filter material none of the following filter plates is dragged along.

At the same time, the locking carriage is via the locking cylinder 106 105 fixed with a clamping piece 163 on the rack 3. This clamp piece is released when a claw 171 of the coupling device 7 is released from the nose 145 on trolley 104.

The coupling device designated as a whole by the number 107 is always in the contracted position of the carriages 104 and 105 in engagement. However, if the locking cylinder 106 or its piston rod 161 is connected to the lever 162 extended for locking, the claw 171, which is resilient on the linkage 172 is held, pulled up and comes free from the nose 145. At this startup The fork 162 also becomes the one in a horizontal position Driving lever 143 pivoted by a tension spring 144 in a vertical direction and thus set up behind the arm of the plate to be withdrawn.

To keep the driver lever 43 in the horizontal position, is a locking pin 144 is held on the fork 162. When this locking pin is raised 164 with the fork 162, the driver lever 143 comes free and directs itself behind the arm of the filter plate to be removed. The respective filter plate can on be transported in this way controlled by limit switches to their end position.

The trolley 104 travels while the locking cylinder is unlocked at the same time 106 back again and pushes the locking carriage ti05 under each next filter plate. The rest of the work flow continues until it is completely emptied the filter press as follows. When the? 1.attentransport is completed, the transport trolley moves 104 with the Verrietelungswagen 105 against an Ans ag at the end of the filter press.

During this process, the function of the four-lock cylinder 106 deactivated by shutting off the current and the driver lever 143 remains locked via the locking pin 164.

In this position, the trolley 104 and the now unbraked are then Locking carriage 105 coupled to one another via the device 107, so that both Car can be driven back to the starting position. When the start position is reached the function of the locking cylinder 106 is restored, with the bistrom is released again by opening a valve. Thus, according to the procedure the carriage for transporting the first plate performs the function of the locking process again possible in the manner described. This is preferably done mechanically actuated shut-off valve in the oil supply for the locking process.

Claims (11)

P a t e n t a n s p r ü c h e filter press for opening a or more wagons for the transport of the moving hanging or standing on rails ble filter plates next to or above the filter plates, preferably with a Hydralikantrieb are movable, on each of which a pivotable driver lever is arranged, which is to be pulled behind the respective plate to be moved can be set up, and in which a locking cylinder acting in the vertical direction can be set up and fixed in each case on the plate following the plate to be withdrawn is according to patent {patent application P 27 41 659.7, characterized by a with a Motor (42,12), preferably with a hydraulic motor, driven reversibly, on a horizontal rack (3) or the like. guided transport trolleys (4,104) and another on the same guide (3) displaceable, the locking cylinder (6,106) receiving carriage (5,105), which is controlled via the first carriage (4,104) is movable. 2. Pilter press according to claim 1, characterized by the locking cylinder (6,106) receiving carriage (5,105) which can be moved freely on the rack (3), which can be fixed in a controlled manner with a braking device (51, 63; 151, 163). 3 filter press according to claim 1 or 2, characterized by one double-acting hydraulic locking cylinder (6) with an upward-facing, at the end a fork (62) for gripping a bearing arm (11) carrying a plate (1) Piston rod (61) and a downwardly directed piston rod (61) and one downwardly directed piston rod (64), which against the rack (3) with a Xiemmstuck (63) can be fixed in a controlled manner. 4. Kilter press according to claim 1, characterized in that the two Carriages (4, 5) when they reach a distance from one another that corresponds to the constant displacement path corresponding to the plates (1,1 '), coupled to one another in a force-locking manner in the pulling direction are. 5. Filter press according to claim i4, characterized by one on the trolley (4) parallel to the rack (3) fixedly arranged driver rod (7), the end Driver (71) when overwriting the one corresponding to the displacement path of the plates (1,1 ') Distance between the two carriages (14.5) receiving the locking cylinder (6) Carriage (5) takes. 6. Filter press according to claim 1, characterized in that the driver lever (143) on the trolley (4) controlled in the opening direction of the plates (1) is such that a passing of the trolley t4) on the pulled plates (1,1 ') is possible. 7. Filter press according to claim 6, characterized in that the through a tension spring (144) liftable into a vertical position driving lever (143) in the closed position of the carriages (1011,105) by a locking pin (154) is held in a horizontal position on the locking carriage (105). 8. Filter press according to claim 1, characterized in that the two Carriage (1011,105} via a coupling device that can be triggered in the vertical direction (107) can be connected to one another. 9. Filter press according to claim 8, characterized by one on the locking carriage (105) claw (171), which has a corresponding nose (1145) on the Transp.ertwagen (104) overlaps. 10. Filter press according to claim 9, characterized in that the resiliently held claw via a rod (172) with the piston rod (1 61) of the Locking cylinder (tO6) is connected 11. Filter press according to claim 10, characterized characterized in that a clamping piece (163) is placed on the coupling device (107) is, which when lifting the claw (171) against the rack (3) with its toothed The end is movable.