DE1247129B - Air and gas filter in which the housing cover and filter inserts can be lifted off using remote-controlled lifting equipment - Google Patents

Description

R * NnFSPFPTIBLIK DEUTSCHLAND

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

BOId

German class: 50 e - 4/01

Number: 1247 129

File number: D 31282III / 50 e

Filing date: August 13, 1959

Opened on: August 10, 1967

It is known, the cover of heavy material filter housings with the help of screw connections or To fasten toggle locks on the housing wall of the particulate filter device. This type of attachment has the disadvantage that several toggle locks have to be released when replacing. However, this is particularly disadvantageous in the case of nuclear systems, because the known Plants are done by hand.

There are still end exhaust air filters for radioactive Aerosols known whose filter cartridge can be remotely exchanged. If a substitution is required of the contaminated filter, the cover of the housing is lifted by a crane Cartridge also taken out by a crane and transported away. With such filters is - how stated at the beginning - before lifting the lid, the lock must be loosened by hand. Another disadvantage is that for lifting the cover on the one hand and for replacing ao the filter, on the other hand, requires two crane movements.

There are also known filters for cleaning blast furnace and other shaft furnace gases with a liquid seal, in which an upper one, denoted by »5 Double-walled filter frame carrying attachment is present, which, moreover, the drainage pipe and which has a lower bell-shaped extension. With this the essay plunges into a liquid seal which is arranged on the upper edge of the lower part of the filter housing. Such a thing Device has the disadvantage of using a liquid seal through which gases pass can diffuse and can only seal against a pressure that of the maximum liquid level is equivalent to.

Furthermore, a milk can is known, the upper edge of which is provided with two openings on opposite sides. A lid can be inserted into the conical edge of the milk can, the upper edge of which is adapted to the conical shape of the milk can opening. This edge is in turn provided with two opposing openings through which two radially lying locking bolts engage. These are pivotally attached at their inner end to a plate which in turn is provided with a downwardly directed guide rod which ends in a downwardly directed handle. The guide rod passes through a transverse web of the cover, which runs below the locking bolt and the air and gas filter bent upwards at both ends, in which the housing cover and filter inserts can be operated remotely
Lifting equipment can be lifted off

Applicant:

Drägerwerk Heinr. & Bernh. Dräger,

Lübeck, Moislinger Allee 53/55

is and also carries openings for the passage of the locking bolt. The crossbar is furthermore U-shaped in profile and carries two outwards and upwards in its central part directional leaf springs that lie against the underside of the locking bolts. Through these leaf springs the locking bolts are pushed up and held in the horizontal locking position. To lift the cover, the operator grips under the crosspiece and presses the Handle with the attached plate facing up. So that are hinged to the plate Ends of the locking bolts pulled upwards so that their free ends come out of the openings step out in the edge of the milk carafe housing.

This known closure is intended to prevent the lid from falling off; however, he has the disadvantage that the lid rests only with its own weight, so that in particular a gas-tight Completion is not achievable. Another disadvantage is that the lid does not go into place when it is put on comes into the locking position under its own weight, but by a special pressure of must be brought into the locking position at the top. Furthermore, when putting the lid on, it is always on it make sure that the cover is inserted so that the lever ends in the two opposite one another Openings in the edge of the milk carafe can intervene. So the lid is not in everyone can be placed in any position.

There is also a closure for pressure cookers known, the lid with closing means are provided in the form of several locking levers. Furthermore, the lid carries in its middle part an upwardly projecting bolt to which an eccentric pressure lever is articulated. It is on the middle guide pin of the cover a pressure piece mounted displaceably, which by means of a Axis releasably attached eccentric lever down-

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Claims (2)

3 4 can be pressed. The frame 1 carries a plurality of suspended matter filter recesses in which the inner ends of the connecting elements 2 and, after these have been inserted, are mounted locking levers, which in turn are suspended in the housing 3.
Support the cover. The locking levers in turn grip the housing 3 with its outer ends bayonet-like in ent- 5 double-walled so that an annular space 4 is formed, speaking, laterally open slots on the housing and edge fastened retaining tabs. To place the cover on the other side of the exhaust air nozzle 7, the cover is first penetrated onto the housing. The air flows in the direction of arrow 8 set and then twisted until the outer in the partition and then upwards. Engage the ends of the locking levers in the slots. The cover 9 rests on the upper edge of the housing 3. Then the eccentric lever is depressed, and below the cover 9 there is a flange in the closed position with a nose on one on 10, to which the frame 1 is attached. The flange 10 presses the plate attached to the pressure piece. While its outer edge overlaps the space 4 and the closing of the pressure piece lowers, so that there is provided with elongated holes 11 through which the locking lever around the curvature of the edge of the 15 air in the space 12 below the cover 9 passes. Cover can be pivoted so that the outer. From there, the air enters the lever ends according to the arrow 13 firmly against the upper edge of the tongues - place the middle part of the frame 1 and through the recesses. To open it, on the other hand, the filter element 2 is raised into the space 14 surrounding it, the eccentric lever. Then one can flow away from there through the connecting piece 7.
Rotation on the lever and thus a rotation ao. On the inner edge of the flange part 10, this is lifted off under the cover. These flaps 24, which are under spring pressure and which are familiar, have the disadvantage that a pivoting movement against the inner wall 15 in the position shown applies when the cover of the housing 3 is closed. If, on the other hand, the cover 9 is necessary. Furthermore, to close with the rock, the flaps 24, on the one hand, and to open, on the other hand, slide against the wall 15, so that the forces exerted by the cover, when released, slide from below against the elongation Pivot holes 11 and write them down ^ The invention avoids the disadvantages of the one. This has the advantage that now Air and gas filters described above. The invention is located within the edge part of the lid 9 This concerns an air and gas filter that prevents dust from falling out. Housing cover and filter inserts by means of remote control A ring 16 is used to hold the cover 9, lifting equipment (crane, pulley block, gripper, manider a larger diameter than the lid 9 pulator) are lifted off and the cover over and on the outer wall 5 of the housing 3 steered lever is held in the locked position. is attached. This ring 16 has a flange 17. The invention consists in that a housing 35 on the outer edge of the cover 9 are tabs protruding support edge hinged to an inner flange 18, in which levers 19 are hinged. the can be seen, and that on the other hand, the cover of the short lever arms 20 forming noses reach under exchangeable part, preferably via the flange 17 on the cover. At the end of the long lever arms 19 hinged lugs, double levers are hinged, which are weights 21 attached. Press the weights 21 with their shorter nose-like ends in per se 40 in the position shown, the lever 19 downwards in a known manner reach under the flange and its and thus against the flange 17, whereby the cover Inner sides held in the blocking position by weights kel 9 pressed tightly onto the edge of the container 3 will. The invention has the advantage that it will. Between the cover 9 and the housing 3 opening the cover of the gas filter or loosening it, sealing rings may be inserted, its closure only with the help of a remote-controlled 45 The weights 21 can be rotated by means of bolts 22 th hoist can take place, on the other hand connected to the mushroom 23. With this, the also the closing of the lid can also only be lifted by weights 21, in which case the the same hoist is done. Additional tools move lever 19 upwards and their lugs 20 and no hand movements are required. The invention release the flange 17 by the tab or now strives for such a cover with as much as possible 50 pairs of hinges 18 to yield inward. So that will easy tool and safe by remote control of the cover 9 free. to put on or remove gas-tight. Finally, when you continue to tighten the mushroom 23 can over the filter is attached directly to the cover, so the arms 19 of the cover 9 with the frame 1 and the that only with a single work pull the opening to be replaced filter elements 2 from the system of the lid and removal of the filter takes place. 55 housing 3 can be removed. According to a further embodiment of the invention
can the weights with a mushroom-like component be rotatably connected by bolts. Patent claims: Further details of the invention are to be found on hand of the embodiment shown in the drawing 60 1. Air and gas filter, in which the housing example executed, namely shows cover and filter inserts by means of remote control A b b. 1 a section through a hoist for suspended matter (crane, block and tackle, gripper, manipu- feeder, lator) and the lid over A b b. Figure 2 is a top plan view partially of the lid, hinged levers held in the locked position partially cut according to the plane AA, 65, characterized in that a A b b. 3 with the support edge (16) protruding beyond the housing when installed, the edge of the cover and an inner flange (17) is provided and that another A b b. 4 when removing. on the other hand on the cover (9) of the interchangeable I 247 129 Part, preferably hinged on the cover (9) hinged tabs (18) double lever (19) are, with their shorter nose-like ends in a known manner under the Grip the flange (17) and hold the insides in the blocking position by weights (21). 2. Air and gas filter according to claim 1, characterized in that the weights (21) with a mushroom-like component (23) for lifting vei related. Considered publications: German Patent Specifications No. 111 290, 571 637; U.S. Patent Nos. 1,160,010, 1,227,380, 380,849;
“Staub” magazine, 1958, No. 8, p. 250. 1 sheet of drawings