AT522563B1 - Device for separating a solid from a gas - Google Patents

Abstract

The invention relates to a device (1) for separating a solid from a gas, with a separation chamber (8) in which at least one filter module (7) is arranged, which has at least one vertically arranged filter element (2), and preferably with an insert element (9) is held so that it can be pulled out of the separating chamber (8), the filter element (2) being insertable from below into the filter module (7) and being able to be fixed in the filter module (7) without tools.

Description

description

The invention relates to a device for separating a solid from a gas, with a separation chamber in which at least one filter module is arranged, which has at least one vertically arranged filter element, and which is preferably held with an insert element from the separation chamber.

[0002] Filter cartridges for separating solids from a gas stream are widely used in the art and have been described many times. E.g. AT 519 879 A4 a device for the separation of solids from gases with a raw gas chamber that can be connected to a raw gas channel at the top and a discharge funnel at the bottom and with at least one filter arranged in the raw gas chamber, whose flow channel, which is enclosed by a filter jacket and can be flown through from bottom to top, is connected to a clean gas chamber is, wherein the filter is connected to a clean gas line running through the raw gas chamber, which is open at the top and bottom, and which opens into the clean gas chamber laterally adjoining the raw gas chamber. The filter can comprise vertical filter cartridges arranged in at least one row, which are held in an insert part which engages in a guide belonging to the bottom of the clean gas line, and that in the inserted position of the insert part (9) the filter cartridges (5) close to the bottom openings ( 12) of the clean gas line (6).

From EP 3 108 952 A1 an air cleaner with a process room is known in which at least one air filter unit is arranged, with air being removed from the process room through the at least one air filter unit via at least one process room opening on the process room ceiling, the air filter unit is held on the process room ceiling in a guide, with projections on the air filter unit engaging behind at least one guide rail and thus the air filter unit can be held sealingly around the process room opening against the process room ceiling, the guide rail on one side of the process room The ceiling is designed so that it can be lowered, the guide rail being hinged to the process room ceiling at one end and being able to be lowered from the process room ceiling at least at its other end so that the air filter unit can be pivoted away from the process room ceiling and out of the guide rail along the to one Side facing the process room -Ceiling lowered guide rail can be pulled out.

[0004] EP 1 695 754 A1 discloses a cartridge element and a filter element. The cartridge member is a plate-like member and includes a planar filter made of a pleated filter medium, a cap that holds the pleats and the opening thereof in a planar shape, an upper end member, and a reinforcing material made of tubes or rods. Furthermore, a mechanism for attaching and detaching a plate-shaped cartridge element is described, comprising guide elements which are fixed at intervals under the floor of a channel and have inclined elliptical holes, rails which are fixed in the guide elements and have connecting holes, coupling devices which the guide elements with couple the rails by penetrating the inclined elliptical holes and the connecting holes, and cassette members installed between and supported by the rails.

[0005] The present invention is based on the object of simplifying maintenance work on such filter devices.

The object of the invention is achieved in the device mentioned above in that the filter element can be inserted into the filter module from below and can be fixed in the filter module without tools.

The advantage here is that the change of filter elements can be significantly simplified. When the filter capacity decreases, the filter element can be replaced more easily and quickly thanks to the tool-free arrangement in the filter module. It is thus possible for the filter element to be covered with a bag before it is removed from the filter module, so that the separated solid particles do not adhere when the filter element is subsequently removed

the environment, but fall into the sack. The fact that the filter element can be arranged without tools has a supportive effect, since only one maintenance person can easily change it. Due to the interchangeability from below, a significant simplification can be achieved in comparison to the prior art cited above, since the entire filter element does not have to be pulled out beyond the plug-in module.

In the preferred embodiment of the device it can be provided that the filter element can be fixed in the filter module by a movement exclusively in one direction, in particular an exclusive rotary movement. The process of fixing the filter element in the filter module can thus be simplified. In particular, an additional lifting movement can be avoided in this way, which may occur with very large filter elements. can be problematic.

According to another embodiment of the device it can be provided that slots are formed on the filter element and webs are formed on the plug-in module, one web each engaging in a slot of the filter element. A bayonet-like fixing of the filter element on the filter module can thus be achieved by simple measures.

According to another embodiment of the device it can be provided that the filter element has a cap element at the upper end facing the filter module, a sealing element made of an elastomeric material being arranged on the cap element. By combining the sealing element with the cap element, the sealing element can be installed more easily during the installation of the filter element, since it does not have to be inserted beforehand and additionally held.

To further simplify, according to one embodiment of the device it can also be provided that the sealing element is formed on the cap element so that it is already fixed in the right place and the maintenance worker no longer particularly the presence and the correct position of the sealing element must pay attention.

According to a further variant, it can also be provided that, in order to avoid excessive compression of the sealing element on the cap element, at least one spacer is arranged with which the filter element rests against a channel of the device. In particular, the “squeezing out” of the sealing element can thus be better avoided.

According to one embodiment of the device, it can also be provided that three spacers are arranged. A stable three-point contact of the filter element is achieved, so that tilting of the filter element can be avoided.

To further simplify the filter element change, it can be provided according to an embodiment variant that all filter elements with the insert element can be completely withdrawn from the separation chamber. The accessibility of the filter elements for slipping over the above-mentioned bag when changing can thus be improved.

Also to simplify the filter element change it can be provided that the slide-in element is held in slide-in rails, the slide-in rails having a downwardly inclined support surface with a horizontal angle of inclination between 2 ° and 10 ° for the slide-in element. With an angle of inclination out of this range, the insert element can be easily pulled out of the separation chamber, even if the friction is increased due to adhering dust between the insert element and the insert rails. Because the filter elements are heavier in the loaded state, the insert element can be pulled out with relatively little effort. Conversely, with a slope resulting from the angle of inclination from this area, the insert element newly filled with new filter elements can also be pushed back into the working position with relatively little effort.

[0016] For a better understanding of the invention, it is described with reference to the following figure

explained here. It shows in a simplified, schematic representation:

[0018] FIG. 1 shows a variant embodiment of a device for separating a solid from a gas;

[0019] FIG. 2 shows a detail from the device according to FIG. 1; [0020] FIG. 3 shows a detail from an insert element; [0021] FIG. 4 shows a filter element in an oblique view from above;

[0022] FIG. 5 shows a detail from a filter module in the area of the fixing of the filter element on the plug-in module;

6 shows a filter module with an insert element and filter elements in a partially extended position and in a side view.

At the outset, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, and the disclosures contained in the entire description can be transferred accordingly to the same parts with the same reference numbers or the same component names. The location details chosen in the description, such as above, below, to the side, etc., referring to the figure immediately described and shown, and if there is a change in position, these position details are to be transferred to the new position accordingly.

In Fig. 1 an embodiment of a device 1 for separating a solid from a gas is shown.

The device 1 is in the form of a filter tower which has a plurality of filter elements 2 (also referred to as filter cartridges) arranged one above the other and / or next to one another. It should be pointed out, however, that the form shown in FIG. 1 is merely exemplary and not restrictive.

In the form shown, a gas laden with solid particles, such as e.g. Air, via an inlet 3 into the device 1 at the top and is distributed downwards in the device. The direction of flow can be supported by a corresponding conveying device, which is not shown in FIG. 1 but is known to a person skilled in the art. The at least one filter element 2 is flowed through from the outside in, as indicated by arrows 24. A filter medium 4 of the filter element 2 is flowed through. The cleaned air leaves the filter element 2 upwards into a clean gas channel 5 and is discharged from the device 1 via this and, if necessary, an additional clean gas collecting channel. The solid particles removed from the gas are drawn off at the bottom of the device 1, preferably via a discharge funnel 6.

In general, the flow course of the gas to be cleaned can also be designed differently.

The filter medium can be a fleece, e.g. in the form of a lamellar filter or a bag filter, as is known per se.

Since this mode of operation of the device is known from the prior art, there is no need to further elaborate on the relationships at this point.

The filter elements 2 are arranged in filter modules 7. A filter module 7 has at least one filter element 2. Preferably, however, several filter elements 2 are arranged per filter module 7, for example between two and eight filter elements 2. The several filter elements 2 are particularly preferably arranged in a row one behind the other in the respective filter module 7, but can also be arranged differently.

There is also the possibility that several filter modules 7 are combined to form a larger unit, so that the modular structure of the device or its expansion

further filter modules 7 can be simplified.

There are also versions of the device 1 possible that have only one filter module 7.

Since all the filter modules 7 of the device 1 are preferably designed the same, only one filter module 7 will be discussed in more detail below. All or several filter modules 7 of the device 1 can also be transferred accordingly. The same applies to the filter elements 2.

The device 1 has a housing 8 in which a separation chamber 8 or a plurality of separation chambers 8, optionally separated from one another, are arranged or formed. The device 1 according to FIG. 1 has four separation chambers 8, for example.

The at least one filter module 7 is arranged in the at least one separation chamber 8, as can be seen better, for example, from the section of the device in FIG.

The filter element 2 or the filter elements 2 are arranged vertically in the at least one separation chamber 8, i. that they are traversed from bottom to top or that they have their largest dimension in the vertical direction.

Furthermore, the filter element 2 or the filter elements 2 are preferably cylindrical. But other shapes, such as cuboid, are possible.

In addition to the at least one filter element 2, the filter module 7 also includes an insert element 9 with which it can be pulled out of the separation chamber 8 and pushed back in again.

In addition to the fixing of the at least one filter element 2 on the clean gas duct 5 via the insert element 9, the at least one filter module 2 is additionally also fixed by the insert element 9 itself. For this purpose, the at least one filter element 2 can be inserted into the filter module 7 from below and can be fixed in the filter module without tools.

The insert element 9 has an opening 10 per filter element 2, as can be seen better from FIG. 3, which shows a section of the egg insert element 9 in an oblique view from below. The filter element 2 is pushed through this opening 10 so that it protrudes above the insert element 9, as is e.g. from Fig. 6 can be seen.

In the preferred embodiment of the device 1, the fixing (fixation) of the filter element 2 on the insert element 9 is achieved by a movement exclusively in one direction. In particular, this movement is an exclusive rotary movement. But it can also be a linear movement. In particular, this movement in one direction does not result in an additional movement in a direction perpendicular to the direction of movement, that is to say for example a lifting of the filter element 2 in the course of the rotary movement.

According to a further preferred embodiment of the device 1 it can be provided that the filter element 2 has several slots 11 (FIG. 5), and that on the plug-in module 9 several, in particular a number of webs 12 (from 3), with a web 12 engaging in each case a slot 11 of the filter element 2, as is shown in detail in FIG. 5, which shows a section of a filter module 7 in the area of the fixing of the filter element 2 on the insert element 9 shows.

The slots 11 and the webs 12 each extend only over a portion of the respective circumference of the filter element 2 and the insert element 6. The slots 11 and the webs 12 are each arranged or formed so far from one another that between two slots 11 of the filter element 2 each fit a web 12 of the insert element 9. It is thus possible for the filter element 2 to be inserted into the insert element 9 from below. The insertion takes place so far that the webs 12 of the insert element 9 are at the same height as the slots 11 of the filter element 2. When this position is reached, the filter element can be rotated so that the webs 12 of the insert element 9 in

Engage with the slots 11 of the filter element. In this way, the filter element 2 is fixed to the insert element 9 without tools.

The slots 11 preferably have a height 13 which corresponds between 100% and 120%, in particular between 101% and 110%, to a thickness 14 of the webs 12 (viewed in the same direction).

The slots 11 of the filter element 2 are preferably arranged or formed on an upper cap element 15 of the filter element 2, in particular on an outer circumference of the cap element 13. For this purpose, webs 16 can also be formed on the cap element.

In the preferred embodiment of the device 1, the slots 11 extend in the circumferential direction only over a portion of the respective webs 16, which forms a stop against which the webs 12 of the insert element 9 strike when the filter element 2 is inserted. The slots 11 can, however, also be formed continuously through the webs 16 of the cap element 15 in the circumferential direction.

Furthermore, the slots 11 preferably have a maximum width (in the radial direction in the variant of the filter element 2 according to FIG. 4) which is between 80% and 100%, in particular between 90% and 100%, of a width 17 of the webs 16 of the cap element 15 corresponds.

As can also be seen from FIG. 4, contact surfaces 18 are preferably formed between the webs 16 of the cap element 15. These contact surfaces 18 can be formed, for example, by an annular web arranged on the outer surface of the cap element 15. The webs 16 can also be arranged on this ring web. The contact surfaces 18 offer the advantage that the correct height can be found more easily when the filter element 2 is inserted into the insert element 9, since the webs 12 of the insert element 9 come to rest in these contact surfaces 18. When this position has been reached, the filter element 2 can be rotated without first having to search for the slots 11 for the insertion of the webs 12 of the insert element 9.

The cap element 15 is preferably made of a plastic, so that the webs 16 and, if appropriate, the contact surfaces 18 can simply be produced with a corresponding mold, for example an injection mold.

For the sake of completeness, it should be pointed out that the cap element 15 - as can be seen from FIG. 4 - is annular (viewed in plan view), so that the cleaned gas enters the clean gas channel through the opening in the cap element 15 5 (shown in Fig. 1) can arrive.

For the sake of completeness, it should also be pointed out that the filter elements 2 have a closed base element 19 (shown in FIG. 1).

In the embodiment variant of the filter element 2 shown in FIG. 4, it has four slots 11. The insert element 9 accordingly has four webs 12, as can be seen from FIG. 3. It should be noted, however, that this number of slots 11 or webs 12 is preferred, but is not restrictive. It is also possible that only one slot 11 and one web 12 are arranged, although a higher number of slots 11 and webs 12 in comparison is advantageous with regard to correct fixing of the filter elements 2. Accordingly, for example between two and eight slots 11 and between two and eight webs 12 can be arranged in the device 1. If several slots 11 and webs 12 are present, they are preferably arranged uniformly (with the same spacing between two slots 11 or webs 12) over the circumference of the filter element 2 or the opening 10 of the insert element 9.

The webs 12 of the insertion element 9 are preferably arranged on the circumference of the opening 10 and protruding radially in this (in the case of a cylindrical variant of the filter element 2), as can be seen from FIG. The insert element 9 can be used as a simple

Sheet metal element may be formed, which optionally has beveled sides, wherein the openings 10 for the filter elements 2 by punching, cutting, for example laser cutting, etc. can be made. The thickness 14 of the webs 12 can correspond to the sheet metal thickness of the sheet metal of the insert element 9. Preferably, edges along the circumference of the opening 10 and the webs 12 are rounded.

The webs 12 can, however, also have a different shape, for example be designed with a hook-shaped or rectangular cross section.

According to another embodiment of the device 1, it is also possible for the filter element 2 not to have any slots 11 for the webs 12 of the insert element 9. In this case, in order to fix the filter element 2 on the insert element 9, its webs 12, for example, can be arranged to engage under the webs 16 of the filter element 2 by rotating the filter element 2. However, the variant with the slots 11 is preferred.

In the preferred embodiment of the device 1 described above, the filter elements 2 are cylindrical. As already mentioned, there is also the possibility that the filter elements 2 have a different shape, for example are cuboid. In this case, the fixing of the filter element 2 on the insert element 2 can be carried out, for example, by a linear movement in one plane instead of a rotary movement. For this purpose, it can be provided that the filter element 2 is pushed into the insert element 9 from one side, that is, for example, from the front or the side. The slots 11 and the webs 12 can also be present here. The slide-in element 9 itself can be reinforced, after which, if necessary, a part of the "frame" of the slide-in element 9, as e.g. from Fig. 3 can be seen, which shows a fully closed opening 10, is missing. However, it is also possible that a space for a filter element 2 remains free for inserting the filter elements 2, so that fully closed openings 10 can also be provided in this case.

For the sake of completeness, it should be pointed out that a linear movement instead of a rotary movement is also possible with cylinder-shaped filter elements 2, although this is not preferred. In particular, the webs 12 of the insert element 9 can be designed differently than shown in FIG. 3, for example with a hook-shaped cross section.

Although in the foregoing in the preferred embodiment of the device 1 the insert element 9 was always described as part of the device, it can also be provided that the device 1 does not have an insert element 9, so that the filter element 2 cannot be removed from the separation chamber 8 (in FIG . 1) can be pulled out. The filter elements 2 can also be fixed as described in this case, the insert element 9 in this case preferably being replaced by a filter module base element which can in particular be approximately plate-shaped or frame-shaped. These designs are particularly suitable in the case of easily accessible separation chambers 2 of such devices 1.

Returning to FIG. 4, it can be provided according to a further variant embodiment of the device 1 that a sealing element 20 made of an elastomeric material is arranged on the cap element 15 of the filter element 2. The elastomer can be an elastomer known to be used for sealing elements.

The sealing element 20 can be arranged loosely resting on the cap element 15. Preferably, however, the sealing element 20 is connected to the cap element 15, for example glued, and / or partially arranged in a groove of the cap element 15. According to a further embodiment variant of the device 1, it can also be provided that the sealing element 20 is molded onto the cap element 15, for example by means of a 2K process.

About the sealing element 20, after the assembly of the filter element 2 in the device 1, a sealing abutment of the filter element 2 on the clean gas channel 5 is made possible

has a corresponding opening for the inlet of the purified gas emerging from the filter element 2, against which the filter element 2 rests in a sealing manner.

As an alternative or in addition to this, the sealing element 20 can be arranged on the aforementioned opening in the clean gas duct 5.

According to a further embodiment variant of the device 1, also shown in FIG. 4, it can be provided that at least one spacer 21 is arranged on the cap element 15, with which the filter element rests against a clean duct 5 (shown in FIG. 1).

In the embodiment variant of the device 1 shown in FIG. 4, four spacers 21 are shown. In general, between one and twenty spacers 21 can be provided, with three spacers 21 being able to be provided according to a further embodiment of the device 1 for a stable three-point system with which tolerance compensation can also be easily created.

The plurality of spacers 21 are preferably arranged in a uniformly distributed manner on the top of the cap element 15, for example along a circle for cylindrical filter elements 2.

As shown in FIG. 4, the spacers 21 can be designed in the shape of a circular ring. However, other shapes, such as cylindrical, cuboid, etc., are also possible.

The height of the spacers 21 is smaller than the height of the at least one sealing element 20 (several sealing elements 20 can also be arranged on a cap element 15) in the same direction.

A spacer 21 can occupy an area which is between 0.1% and 10%, in particular between 1% and 5%, of the area of the cap element 15 on which the spacer 21 is arranged.

Furthermore, the spacers 21 are preferably made of the plastic of the cap element 15. In particular, the spacers 21 are formed in one piece with the cap element 15.

As already mentioned, the filter elements 2 can preferably be pulled out of the separating chamber 8 with the insert element 9 and pushed back in again. This is shown in FIG. 6 with the insertion element 9 partially extended. According to a variant embodiment of the device 1, all of the filter elements 2 of a filter module 7 with its insert element 9 can be completely withdrawn from the separation chamber 8, so that the innermost filter element 2 is also easily accessible.

To this end, the insert element 9 can be held or guided on insert rails 22, as can be seen from FIG. In particular, the slide-in rails 22 can be arranged laterally next to the slide-in element 9 in the insertion direction of the slide-in module 9 such that the slide-in element 9 can be supported on these slide-in rails 22.

The slide-in rails 22 can be designed as simple C-profiles (or U-profiles). They can also be arranged in the separation chamber 8 in such a way that one leg of each of these profiles engages under the slide-in element 9 at the side. For example, a beveled side surface of the insert element 9, as shown in FIGS. 3 and 6, can be supported on each of these legs.

According to a further embodiment variant of the device 1, it can be provided that the slide-in rails 22 have an inclined support surface. The inclination is designed such that the insert element slides downward out of the separation chamber 8 in the pull-out direction, as can be seen from FIG. 6. The angle of inclination of the inclined support surface, based on the horizontal, is preferably selected from a range of 2 ° and 10 °, in particular from 2 ° to 5 °. In the side view, the slide-in rails 22 can thus have the shape of a right-angled trapezoid.

The slide-in rails 22 can slide over a depth of the separation chamber 8

direction that is between 80% and 100% of this depth. The insert element 9 does not have to be supported over its entire length in the insertion direction. The arrangement of slide-in rails can be dispensed with, particularly in the area of the rear side of the separation chamber 8.

The slide-in rails 22 can be provided with a stop element in the area of the front of the separation chamber, on which the slide-in element 9 strikes when it is pulled out, so that it cannot be unintentionally pulled completely out of the slide-in rails 22. The stop element can be designed in such a way that it can be bypassed by deliberately manipulating the insert element 9, for example by lifting or tilting it, so that the insert element 9 can be completely removed from the separation chamber 8 if necessary.

Furthermore, to reduce the friction between the slide-in rails 22 and the slide-in element 9, at least one of the surfaces sliding against one another is provided with a sliding coating, for example a sliding lacquer coating. For this purpose, the slide-in rails 22 can alternatively or additionally also be designed in the manner of a drawer extension with rollers or cylinders or with balls.

In order to do justice to the tool-free concept even when the filter element 2 is finally fixed in the working position, the device 1 preferably has at least one quick-release fastener 23, for example a toggle clamp, per filter module 7, as can be seen, for example, from FIG. It is thus achieved that after the insertion element 9 has been pushed into the separation chamber 8 or generally after the at least one filter element 2 has been positioned below the corresponding opening in the clean gas duct 5, the filter module 7 is raised in the direction of this opening and rests against the Clean gas channel 5 can be brought. In the case of the inclined guide rails 22, the insert element 9 largely loses its contact with the guide rails 22, as can be seen from FIG. 2 by the distance between the insert element 9 and the lower leg of the guide rails 22.

The exemplary embodiments show or describe possible design variants of the device 1 for separating a solid, it being noted at this point that combinations of the individual design variants with one another are also possible.

For the sake of clarity, it should finally be pointed out that for a better understanding of the structure of the device 1 for separating a solid, it or its components are not necessarily shown to scale.

Austrian

REFERENCE LIST

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Device filter element inlet filter medium clean gas duct discharge funnel filter module separating chamber insert element opening slot

web

height

Thick cap element bar

Wide contact surface Floor element Sealing element Spacer Slide-in rail Quick-release fastener arrow

AT 522 563 B1 2020-12-15

Claims (9)

Claims 1. Device (1) for separating a solid from a gas, with a separation chamber (8) in which at least one filter module (7) is arranged, which has at least one vertically arranged filter element (2), and which preferably has an insert element (9 ) is held such that it can be pulled out of the separation chamber (8), characterized in that the filter element (2) can be inserted into the filter module (7) from below and can be fixed in the filter module (7) without tools. 2. Device (1) according to claim 1, characterized in that the filter element (2) can be fixed in the filter module (7) by a movement exclusively in one direction, in particular an exclusive rotary movement. 3. Device (1) according to claim 1 or 2, characterized in that slots (11) are formed on the filter element (2), and that webs (12) are formed on the insert element (9), one web (12) in each case ) of the insert element (9) engages in a slot (11) of the filter element (2). 4. Device (1) according to one of claims 1 to 3, characterized in that the filter element (2) at the upper end facing the plug-in module (9) has a cap element (15), wherein on the cap element (15) a sealing element ( 20) is arranged from an elastomeric material. 5. Device (1) according to claim 4, characterized in that the sealing element (20) is integrally formed on the cap element (15). 6. Device (1) according to claim 4 or 5, characterized in that at least one spacer (21) is arranged on the cap element (15) with which the filter element (2) rests against a clean gas duct (5). 7. Device (1) according to claim 6, characterized in that three spacers (21) are arranged. 8. Device (1) according to one of claims 1 to 7, characterized in that all of the filter elements (2) with the insert element (9) can be completely withdrawn from the separation chamber (5). 9. Device (1) according to one of claims 1 to 8, characterized in that the slide-in element (9) is held in slide-in rails (22), the slide-in rails (22) having an inclined support surface with an inclination angle relative to the horizontal between 2 ° and 10 ° for the insert element (9). In addition 3 sheets of drawings