EP3595795A1

EP3595795A1 - Filter apparatus

Info

Publication number: EP3595795A1
Application number: EP18719042.6A
Authority: EP
Inventors: Manfred Deutschmeyer; Albert Kaints
Original assignee: Hydac Process Technology GmbH
Current assignee: Hydac Process Technology GmbH
Priority date: 2017-03-18
Filing date: 2018-03-09
Publication date: 2020-01-22
Also published as: KR20190137817A; KR102598353B1; US20200038788A1; WO2018172106A1; CN212491818U; DE102017002646A1; US11278826B2; JP2020511308A; JP7112434B2

Abstract

The invention relates to a filter apparatus having a filter housing (1) having a fluid inlet (11) for raw fluid and having a fluid outlet (19) for filtrate and having at least one one-piece or multi-piece filter insert (7, 9) which is received in the filter housing (1) and can be cleaned using at least one back-flushing member (21) in counter-current to the filtration direction, which member can, by means of a fluid-guiding driveshaft (20) of a rotary drive, be moved along the inner side (17) of the respective filter insert (7, 9) and has, at the end of the back-flushing member adjacent to said inner side (17), a gap-shaped passage opening that runs parallel to the axis of rotation (16) of the driveshaft (20) and discharges into a flow space fluidically connected to the driveshaft (20). Said filter apparatus is characterized in that the distance between the respective back-flushing member (21) and the adjacent assignable filter insert (7, 9) is predefinable by means of an adjusting device (27; 47).

Description

HYDAC Process Technology GmbH, Industriegebiet Grube König Am Wrangelflöz 1, 66538 Neunkirchen

filter means

The invention relates to a filter device with a filter housing and with a fluid inlet for unfiltered and with a fluid outlet for filtrate and with at least one housed in the filter housing one or more parts filter insert which can be cleaned with at least one backwash in countercurrent to the Filtrierrichtung, by means of a fluid-carrying drive shaft of a rotary drive on the inside of the respective filter insert is movable and at its inner end adjacent this end has a gap-shaped passage opening which is parallel to the axis of rotation of the drive shaft and which opens into a fluidly connected with the drive shaft flow space.

For the operational safety and service life of internal combustion engines, the perfect condition of the lubricating oil is of great importance. In particular, the continuous operation of diesel engines, which are operated for example in maritime applications with heavy oil, particularly high demands on the nature of the lubricating oil, so that in such applications the use of filter devices for lubricating oil purification is essential. In this regard, it is state of the art to use filter devices in which filter cartridges are backwashed to allow longer run times between the change of filter cartridges and thereby keeping maintenance costs low. As examples of the related art, the documents DE 34 43 752 A1 and DE 20 2016 012 206 U 1 show filter devices of the above-mentioned type. Based on this prior art, the invention has the object to provide a filter device of the type mentioned above, which is characterized by a high efficiency of cleaning and a particularly high level of reliability. According to the invention this object is achieved by a filter device having the features of claim 1 in its entirety.

According to the characterizing part of claim 1, an essential feature of the invention is that the distance between the respective backwash element and the adjacently assignable filter insert can be predetermined by means of an adjusting device. With the possibility of adjusting the backwash to the relevant filter insert tolerance compensation is available, which allows an optimal distance-free installation of the gap-shaped passage opening of the respective backwash on the wall of the filter material even at within the usual tolerance ranges deviations. As a result, the filter device according to the invention is distinguished not only by a particularly high efficiency of the cleaning achieved during the backwashing process, but also by a high degree of operational reliability.

In advantageous embodiments, the adjusting device has a spindle drive which can be actuated manually from one side of the drive shaft and has feed means which act on the other side of the drive shaft on the respective backwashing elements. Advantageously, the arrangement may in this case be such that the spindle drive with its adjusting movement executing spindle engages through the drive shaft with its inner fluid guide and forms with its passed through the drive shaft end acting on the respective backwash part of the feed.

Alternatively, movable from the spindle drive feed means can be guided past on outer sides of the drive shaft, wherein also run to the other side guided ends of the feed means on the backwash.

The backwashing member may have a receiving housing, which engages the spindle drive with its respective Zustellmittel and are accommodated in the at least two Rückspülteilorgane, each sub-member is associated with a fluid guide, the longitudinally movable in each traversing position of the receiving housing engages in the internal fluid guide of the drive shaft. The fluid guides of the partial organs can be formed by telescopically movable tube parts, one of which is connected to the respective part of the organ and the other with the inner fluid guide of the drive shaft.

In embodiments in which the spindle drive is passed through the drive shaft, it can engage with its respective feed means between the fluid guides of a pair of sub-organs on the receiving housing.

In the case of feed means guided laterally past the drive shaft, the respective feed means for each sub-member may be movably guided in each guide housing mounted on the outside of the drive shaft, wherein a spring element acts as a further feed means generating a feed force between these guide housings and adjacently arranged housing parts of the receptacle housing , Advantageously, the arrangement may in this case be such that the respective spring element allows compensating movements of the receiving housing relative to the slot-shaped passage opening of the respective partial member. The Einsteileinrichtung thereby forms a kind of "shuttle", which allows an additional angle compensation.

In a particularly advantageous manner, the compensating movement can take place parallel to the feed direction of the respective feed means of the spindle drive or at a tilt angle, under tilting of the receiving housing, a part member is at least partially delivered more towards the adjacent filter insert and the other part of a member organ of removed from the insert.

For a parallel feed movement, a prestressed compression spring can be used as the spring element and, for a tilting movement, an elastically yielding sealing element that encompasses the fluid guide of the partial element when it enters the internal fluid guide of the drive shaft.

In advantageous embodiments, for the realization of the tilting movement cooperating with the spindle drive receiving plate which is connected at its free ends to the receiving housing and which, while maintaining a distance, the receiving housing, seen in the direction of the drive shaft, at least partially. In embodiments with laterally guided on the drive shaft passing means of the spindle drive, the arrangement can be made with advantage so that the receiving plate is connected to two spindle drive associated rods, which are guided in the located on the drive shaft outer guide housings and by means of a Toggle drive in - let set within the guide housing, thereby locking the setting. The invention with reference to embodiments shown in the drawings will be explained in detail.

Show it:

Fig. 1 is a broken and with a slightly offset from the center plane drawn vertical section of an embodiment of the filter device according to the invention; an oblique perspective view of the device part shown in Figure 1 with cut housing wall. a vertical section of the device part shown in Figure 1 and 2 with central cutting plane. the device part of Figure 1 to 3 in perspective oblique view and cut along the center plane. a perspective oblique view of a longitudinal section of the drive shaft and a backwashing thereon according to a second embodiment of the filter device according to the invention;

6 shows a perspective oblique view of the device part of the second exemplary embodiment shown in FIG. 5, device parts being shown in section in the region of a guide housing laterally located on the drive shaft; 7 is a cut-away in a central vertical plane perspective oblique view of the device part of the second embodiment; 8 is a side view, drawn on a smaller scale

Rückspülorgans with associated adjusting device of the second embodiment, in a separate representation without drive shaft; Fig. 9 is a plan view of the back flushing member of Fig. 8 mounted on the drive shaft shown in cross section;

10 and 11 is a side view and a longitudinal section of the

Spindle drive of the adjusting device of the second exemplary embodiment associated guide housing;

FIG. 12 shows a side view of a longitudinal section of the drive shaft of the second exemplary embodiment with a backwash element located thereon; FIG.

FIG. 13 shows the side view of FIG. 12 in a partially broken away and sectioned illustration; FIG.

14 shows an enlarged partial section of Fig. 13 with

XIV designated area.

Figures 1 to 4 show a first embodiment of the filter device according to the invention. This has a filter housing designated as a whole as 1, which in its construction corresponds to the pertinent, cited prior art (see Fig.1 of the cited DE 202016003089 U1). In The shortened representations of Figures 1 to 4 are therefore shown by the filter housing 1, only a part of the housing main body 3 and a down to this subsequent Gehäusebodens- or input part 5. In the main part 3, a first filter insert 7 and a second overlying filter insert 9 are arranged, of which only the lower one is completely visible. At the bottom part 5 is a lateral inlet 11, flows through the unfiltered filtrate in the bottom part 5 and after flowing through an input filter 13, which is provided in maritime applications as a so-called. Fish sieve, via passages 15 into the inner cavity of the filter cartridges and 9 flows, which is surrounded by the inside 17 of their filter material. In the filter material flowing through the filter material from the inside to the outside, the fluid passes into the space 18 surrounding the filter inserts 7, 9, which forms the filtrate side in the main part 3, from which it flows out via a lateral filtrate outlet 19.

Corresponding to the state of the art, a backwash element is provided for each filter element 7 and 9 on a drive shaft 20 formed by a square tube, which contains two backwash partial elements 22 arranged one above the other in a receiving housing 21. The dividing organs 22, which correspond to the state of the art and are therefore only schematically indicated in the figures, are formed in the usual way by a type of scraper which, with a slot-shaped passage opening which runs parallel to the axis of rotation of the drive shaft 20, during a rotational movement the drive shaft 20 on the inside 17 of the filter cartridges 7, 9 are guided fitting. The passage opening continues in the interior of the partial elements 22 in a flow space which is connected via a respective fluid guide 23 with the interior of the drive shaft 20 in connection. This Flu idfüh- ments 23 are telescopically guided longitudinally movable in a located on the drive shaft 20 connecting part 24. The drive shaft 20 is drivable according to the prior art and rotatably supported, of the bearings only a lower pivot bearing 25 is visible on the the lower end of the drive shaft 20 merges into a sludge discharge pipe 26.

For the delivery of the receiving housing 21 with the backwash part members 22, that is, the adjustment of the distance of the gap-shaped passage openings of the partial members 22 of the rotation axis 16 of the drive shaft 20, an adjusting device is provided with a spindle drive. This has in the example of Fig. 1 to 4, a threaded spindle 27 which is guided in the direction of rotation axis 1 6 perpendicular direction through the drive shaft 20. The threaded spindle 27 forms a Zustell medium, which is connected with its the housing 21 facing the end with this in the middle between the sub-organs 22. The receiving housing 21 has the shape of a strip-like body with long sides 28 and 29 (Fig. 2), which extend parallel to the axis of rotation 1 6 of the drive shaft 20, wherein in the interior of the receiving housing 21, the partial organs 22, with the vertical axis aligned between the long sides 28, 29 are arranged one above the other. The fluid guides 23 of the partial elements 22 have on the fluid guide 23 to an output tube 30, which, see Figs. 3 and 4, telescopically guided in the associated connection part 24 of the drive shaft 20 is telescopically. The receiving housing 21 facing the end of the threaded spindle 27 is connected to the receiving housing 21 to a plate 31 which forms the drive shaft 20 facing the end wall of the receiving housing 21. The connection point 37 with the spindle drive 27 is located in the middle between the fluid guides 23. For the position adjustment of the threaded spindle 27, as shown in FIG. 4 shows most clearly, on the receiving housing 21 facing the outside of the drive shaft 20, a nut 32 defined with the External thread of the threaded spindle 27 is in threaded engagement. On the opposite outer side 33 of the drive shaft 20 is a knurled nut 34 with the external thread of the threaded spindle 27 in threaded engagement. At the over the knurled nut 34 projecting free end of the threaded spindle 27 is a manually operable rotary lever 35th The connection 37 of the end of the threaded spindle 27 to the plate 31 of the receiving housing 21 is designed so that the spindle 27 is rotatable relative to the receiving housing 21, but by the spindle 27, the radially outwardly extended position of the receiving housing 21 is limited. This position is adjustable in that when not tightened knurled nut 34 when rotating the threaded spindle 27 by means of the lever 35 by the threaded engagement with the nut 32, the axial position of the spindle 27 and thus the fully extended end position of the receiving housing 21 is specified. By tightening the knurled nut 34, the rotational position of the spindle 27 is secured and thus locks the setting. If, as shown in FIGS. 1 and 2, on the fluid guides 23 of the partial members 22, a spring element 36 is inserted, which loads the receiving housing 21 for a delivery radially outward, the connection 37 between the spindle 27 and plate 31 with advantage in the Art of a floating bearing be executed, which limits a movement of the receiving housing 21 radially outwardly positively, but allows a tilting movement of the receiving housing 21 about an axis transverse to the main axis and optionally provides an axial clearance for a spring travel radially inward available.

Compensating and tilting movements, in particular, the second embodiment shown in Fig. 5 to 1 5 available. As in the first embodiment, the adjusting device has a spindle drive, which is manually operable from the outside of the drive shaft 20 ago. Unlike the first example, the receiving housing 21 of the sub-organs 22 is not in the form of a bar-shaped strip body, but is formed in its outer shape by the two superposed flow funnel of the backwash sub-members 22, which are connected at the radially outer side by a front plate 41. For cooperation with the spindle drive, a support extending parallel to the end plate 41 is mounted. receiving plate 43 which has lateral wings 44, which partially comprise the sub-organs 22 and are interconnected via a central web 45 which extends through the gap between the Teilorgangen 22. The ends of the wings 44 are each firmly connected to the end plate 41 of the receiving housing 21. Another difference to the first example described is that the threaded spindle of the spindle drive is not passed through the drive shaft 20. As most clearly shown in Fig. 7 in conjunction with Figs. 5 and 6, a threaded spindle in the form of a pressure screw 47 is provided, which has a knurled head 49, which allows a manual adjusting rotational movement. As FIG. 10 shows, the pressure screw 47 has a thread-free end section 51 and a threaded section 52. The thread-free end portion 51, which is rotatable in a guide body 54, is supported at its free end on a pressure plate 53, which is located on the outside of the drive shaft 20. The threaded portion 52 is threadedly engaged with an internal thread in a crosshead 55. The traverse 55 extends beyond the width of the facing outer side of the drive shaft 20 and forms with its projecting ends the connection points for a rod 57. The respective in a guide housing 59 are longitudinally displaceable in a direction perpendicular to the axis of rotation 16 of the drive shaft 20 direction guided. As shown in FIGS. 5 and 6 in conjunction with FIGS. 10 and 11, a sleeve 61 and an annular disc 60 are penetrated by a fastening screw 63 at the respective connection of the traverse 55 with the rods 57. In a corresponding manner, the respective other end of the rods 57 is connected by a screw with the receiving plate 43, at a position which is located centrally between the ends of the wings 44. In this screw, a fastening screw 43 engages through an elastomeric sleeve body 66, so that on the receiving plate 43 a resilient mounting of the receiving housing 21 relative to the drive shaft 20 is formed. As in the first embodiment, the fluid guides 23 of the sub-organs 22 are guided in a telescopically displaceable manner in the associated connection part 24 of the drive shaft 20. As with the connection between the rods 57 and the receiving plate 43 of the receiving housing 21, where a resilient bearing 66 is formed by the elastomeric sleeve body used, a resilient guide is also provided in the guide of the fluid connections 23 in the connecting parts 24 of the drive shaft 20. As shown in FIGS. 1 3 and 14, a radial clearance (see FIG. 14 at 65) is provided between the fluid guide 23 and the connection part 24 and a yielding sealing element 67 is inserted, for which there is a clearance in the connection part 24 for the yielding of the sealing element 67 is available.

As in the first embodiment, the receiving housing 21 is biased by the fluid guides 23 surrounding spring elements 36 for a radially outwardly extending adjustment, which is limited by the position of the feed device connected to the spindle drive. In the present embodiment, this is the position of the laterally guided in the receiving housings 59 rods 57. These are supported against the force of the spring elements 36 by means of the pressure screw 47 and the cross-threaded with this traverse 55. By manually turning the pressure screw 47 by means of the knurled head 49 in one or the other direction of rotation, the axial position of the rods 57 is adjustable. The resilient mounting of the rods 57 on the receiving plate 43 of the receiving housing 21 in conjunction with the shown, resilient guidance of the fluid guides 23 on the connecting parts 24 of the drive shaft 20 allows compensating movements, such as a tilt angle of plus / minus 1 degree of the end plate 41 of the receiving housing 21 in a plane parallel to the axis of the drive shaft 20. 5 and 8 and 9 show, for each guide housing 59, a toggle actuator 69, which on the end of the respective guide housing 59 facing the receiving housing 21 is mounted and manually operable to lock the position of the rod 57 by clamping.

The filter device according to the invention can be used in addition to the lubricating oil filtration for other applications for which it is suitable. In addition to the already mentioned maritime purpose in which ballast water is purified from ships, the device can also be used for the treatment of process waters.

Claims

P a n t a n s p r e c h e

Filter device, comprising a filter housing (1) with a fluid inlet (1 1) for unfiltered and with a fluid outlet (19) for filtrate and at least one in the filter housing (1) accommodated one or more parts filter insert (7, 9) with at least a backwash (21) in the counterflow to the filtering direction can be cleaned, which by means of a fluid-carrying drive shaft (20) of a rotary drive on the inside (1 7) of the respective filter insert (7, 9) is movable and at its inner side (1 7) adjacent end a gap-shaped passage opening which is parallel to the axis of rotation (16) of the drive shaft (20) and which opens into a fluidically connected to the drive shaft (20) flow space, characterized in that the distance between the respective backwash (21) and the adjacent zuordenbaren Filter insert (7, 9) by means of an adjusting device (27, 47) can be predetermined.

Filter device according to claim 1, characterized in that the adjusting device has a spindle drive (27; 47) which can be actuated manually from one side of the drive shaft (20) and has feed means which act on the other side of the drive shaft (20) attack the respective backwash (21).

Filter device according to claim 1 or 2, characterized in that the spindle drive with its setting ewegung exporting spindle (27) passes through the drive shaft (20) with its inner fluid guide and with its through the drive shaft (20) guided through the end (37) at the respective Backwash (21) engaging part of the delivery forms.

4. Filter device according to one of the preceding claims, characterized in that the spindle drive (47) movable Zustel lmittel (57) on outer sides of the Antriebswel le (20) are passed.

5. Filter device according to one of the preceding claims, characterized in that the backwashing member has a receiving housing (21) on which the spindle drive (27; 47) with its respective Zustel littel (37; 57) engages and in the at least two backwash lorgane (22) are included, and that each sub-body (22) has a

Assigned fluid guide (23), the longitudinal movement in each Verfahrstel development of the receiving housing (21) in the internal fluid guide (24) of the Antriebswel le (20) engages. 6. Filter device according to one of the preceding claims, characterized in that between the fluid guides (23) of a pair of sub-organs (22) of the spindle drive (27) with its respective Zustel lmittel (37) on the receiving housing (21) engages. 7. Filter device according to one of the preceding claims, characterized in that the respective supply means (57) for each part member (22) in a on the drive shaft (20) externally mounted guide housing (59) is movably guided and that between these guide housings ( 59) and adjacently arranged housing parts of the receiving housing (21) as a Zustel lkraft generating further Zustel lmittel a spring element (36) acts.

8. Filter device according to one of the preceding claims, characterized in that the respective spring element (36) compensating movements of the receiving housing (21) relative to the gap-shaped passage opening of the respective partial member part (22) makes it possible.

9. Filter device according to one of the preceding claims, characterized in that the compensating movement paral lel to the feed direction of the respective Zustellmittels (57) of the spindle drive (47) or at a tilt angle, at len of the receiving housing under Schrägstel (21) a partial organ ( 22) is at least partially more towards the adjacent filter insert (7, 9) is delivered and the other part of the organ (22) of a pair of the insert (7, 9) away.

1 0. Filter device according to one of the preceding claims, characterized in that for a parallel feed movement as a spring element, a prestressed compression spring (36) is used and for a tilting movement an elastically yielding sealing element (67), the fluid guide (23) of the partial organ ( 22) when entering the internal fluid guide (24) of the Antriebswel le (20).

1 1 .Filtervorrichtung according to any one of the preceding claims, characterized in that for the Realization of the tilting movement with the spindle drive (47) cooperating receiving plate (43), which is connected at its free ends (44) with the receiving housing (21) and, while maintaining a distance, the receiving housing (21), as seen in the direction of the Antriebswel le (20), at least partially.

1 2. Filter device according to one of the preceding claims, characterized in that the receiving plate (43) with two the spindle drive (47) associated rods (57) is connected, in the le on the Antriebswel (22) located outer guide housings (59). as a delivery means of the spindle drive (47) are guided and can be defined by means of a toggle drive (69) within the guide housing (59).