DE1775008C3 - Flange quick release for lids of containers, especially for explosion-proof devices - Google Patents

Description

The invention relates to a flange quick release fastener for lids of containers in which a certain Gap width between lid and container must not be exceeded, especially for explosion-proof Devices, with sections of the lid and I-container flange U-shaped encompassing closure pieces, which are pivotably articulated on the lid or container, the inner surfaces in contact with one another the legs of the plugs and outer surfaces of the flanges are each parallel and flat.

From the DT-AS 11 81 999 is a quick release for Known container in which the container parts to be closed at the connection point with sealing means have ring flanges which are held together or pressed against one another by U-shaped segment clamps: the segment clamps individually to the lid, base, container or apparatus around outside of the flanges parallel to these arranged axes of rotation pivotably articulated and dieten Parts of springs or a rotatable cam ring are assigned, through which the segment brackets at the same time be brought into the closed or open position and held. Such a closure is extraordinary takes up space because it requires a lot of space around the flange for deflecting the segment brackets outward. Especially when the contact surfaces of the brackets and flanges are parallel and are flat, long lever arms must be used or there are further articulated connections required to set the brackets on the flanges.

From DT-PS 3 57 801 is a locking device known for steam vessels, which is characterized in that the inwardly protruding flanges The vessel and the lid are joined together by an expandable clamping ring on the deck in which only a concentric closure üetzt in such a way that the clamping ring with closed Defc kel embraces the flanges exactly and presses the end ring] against them while opening the lid the clamping ring diameter by means of a device that can be operated outside the cover, soft the clamping struggling to sew each other, smaller than the inner one

ίο diameter of the flanges is made so that dii Flanges become free. Such a closure requires a complex actuation inside the lid facility for expansion and contraction! of the clamping ring, which is located in the steam room a precise machining of the almost half-ring-shaped Tei Ie of the clamping ring and the flange in question he demands, whereby due to the bevels on the contact surfaces only a linear contact area given is.

2f> From the British patent specification 9 65 265 a Dek Angle known for pressure vessels, in which a large number of stoppers untei by pivoting movement a flange can be swiveled grippingly. The pressure to be absorbed acts on the axes of rotation this lever, whereby elastic and plastic deformations occur as well as an enlargement the game with which the lid rests. In addition, the surfaces in contact with one another are subject heavy wear and tear, which increases the play far.

The invention is based on the object of a flange quick release fastener for the lids of containers which a certain gap width between the lid and the container must not be exceeded, in particular for explosion-proof devices, to be indicated even in the case of slight distortions and distortions of the flanges ensures a secure closure in which the specified gap width is not exceeded, and which is easy to open and close by hand, with the locking pieces absorbing great force are able to.

This is in accordance with the invention in a liquid quick-release fastener for lids of containers of the type mentioned at the outset achieved in that the locking pieces each have one arm around one on the lid or container at right angles to the flange plane arranged axis pivotable and axially movable form two-armed lever, the inner surface of a U-leg in the open and closed position Outer surface of the flange adjacent to it at least partially constantly covered, while the inner surface the other U-leg has a rounding at its corner facing the axis of rotation and that the Lever by means of adjusting means acting on this in the form of a control ring or pull and pressure straps Simultaneously from the open position to the closed position and via a common actuator reversed are adjustable.

Due to the axial mobility of the locking pieces load-bearing levers can follow these in the event of flange distortions, although compliance everywhere A certain gap width remains secured, as is an unconditional requirement for explosion-proof devices is. At the same time, the forces for the Actuation of the lock is reduced and the wear of the lock bead and the flange sections accordingly reduced.

The invention will now be described in greater detail on the basis of exemplary embodiments with reference to the drawings explained it shows

F i g. 1 the front view of a closure with an open lid,

2 shows the rear view of a lock when it is closed Position of the lid,

F i g. 3 the rotating lift! of the closure according to the invention,

F i g. 4 the section IVlV of FIG. 2, F i g. 5 shows the section V-V of FIG. 2,

F i g. 6 the view of another type of lock,

F i g. 7 the section VU-VII of FIG. 6,

Fig. 8 is a view of a further type of lock in the closed position,

F i g. 9 in the open position.

The quick release fastener for lids on explosion-proof or high-pressure containers consists of rotatable holders as double-armed levers 1 (F i g. 1,2), which on the lid 2 of the container by means of the axes 3 are mounted.

Each of the double-armed levers 1 (Fig.3) has Closing pieces, which with the legs 5 and 6 when the lever 1 is rotated about the axis 3 (F i g. 1) the associated flanges 7 and 8 of the lid 2 and the container 9 comprise. The lower leg 6 of the lever 1 (Fig.4) are in constant engagement with the flange 7 of the cover 2 and are between this and a projection 10 which is rigidly attached to the cover 2. The axes 3 are in the projections 10 screwed in.

The height of the lower leg 6 is slightly less than the distance between flange 7 and projection 10, this allows the levers to move on the axes of rotation 3 when closing and opening.

If the lever 1 is rotated, the upper legs 5 encircle when the closure is closed (F i g. 5) the flange 8 of the container 9 and release the flange when the closure is opened.

The width of the groove delimited by the legs 5, 6 is greater than the sum by the selected clearance the thickness of the flanges 7 and 8 on the lid 2 and container 9.

The other end of each lever 1 forms an angle of 90 ° with the former end. The levers 1 will be by rollers 11 whose axes 12 (FIG. 5) are rigid a rotary ring 13 are attached, pivoted about their axes 3.

The rotary ring 13 is rotated around the central axis of the cover 1 by an eccentrically mounted disk 14 (F i g. 1) rotated, which interacts with plates 15 rigidly attached to the ring 13. By the eccentric arranged disc ensures that the lid can be opened quickly.

The ring 13 runs freely in recesses in the projections 10 (Fig. 14) and is in every position by the rotatable lever 1 against falling out of the lid 2 secured. The disk 4 is actuated from the outside by the control lever 16.

The lock is operated as follows:

To close, the control lever 16 is pivoted through 180 °, the ring 13 being pushed through the disk 14 rotated around the central axis of the lid, the rollers 11 (Fig. 1) run on the ends of the levers 1 and rotate the latter about their axes 3.

As a result, the flanges 7, 8 of the lid 2 and container 9 become through the legs 5 and 6 of the lever 1 and the lid 2 is securely held on the container 9.

In another type of closure, the axes of rotation of the levers are attached to the container, whereby the lid weight is lower and the closures can be used for large containers. In in this case the levers 17 (Figs. 6, 7) have axes of rotation 18 which are attached to the container 19 the lever 17 is similar to that described above. The ends of the axles 18 sit with Play in recesses 20 on the container edge.

The levers 17 are pivoted about the axes 18 by a ring 21, which is connected to one another by means of pins 23 coupled disks 22 is made. One of the disks 22 actuates the arm 17 'of the lever 17. The ring 21 is z. B. driven by a worm drive not shown in the drawing.

A lock of this type is operated in a manner similar to that described above.

The closure according to the invention can also be used for containers with rectangular shaped lids. In Fig. 8 and 9 is another type of closure for rectangular lids according to the invention shown. In this type of construction, levers 24 are provided which are fastened to the cover 25 by means of axes 26.

A pull and push tab 27, which is coupled to levers by tabs 28, is used to operate the lever 24 is.

The pull and push tab 27 is actuated by an externally controlled, eccentrically mounted disc 29.

A lock of this type is operated in a manner similar to that described above.

From the examples it can be seen that the closure can be used for any cover shape, with the lever arrangement can be both outside and inside the container, is suitable.

The levers can be attached either to the lid or to the container. The axes can be made in one piece with the levers or can also be made separately from the latter.

The levers can also be designed with one arm. Sometimes, especially with rectangular ones Lids, the levers can be designed to act with two and one arm at the same time.

The levers can either by interacting their surfaces with a movable drive member can be operated directly or by interaction with this via intermediate parts.

The movable drive element can be used as a bracket, frame, disc, ring, nut or as a combined Piece made from the enumerated parts.

The movable drive member can either outside or inside the container by a hand drive (by gearwheel, eccentric disc, lifting winch and others) or automatically (by hydraulic, electromagnetic or compressed air drive and others).

The above-described types of closures allow a small amount of play to be maintained between the associated flanges of the lid and the container (in the range from 0.05 to 0.1 mm), whereby These closures are also used for explosion-proof devices that are intended for operation in potentially explosive areas Rooms and outdoor facilities of all ignition classes are intended.

In the above-described closure, an explosion pressure within the container is also caused by the Legs of the locking pieces safely received that

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with any safety factor made of high quality Steel can be made. The flanges of the lid and container take the shear and bending stresses by a leg closed at the circumference, whereby these parts are in practice within of the container can absorb the pressures occurring. The axes of rotation of the levers are caused by the pressure of the explosion unclaimed.

In practice, the lock can be designed for any pressure.

Since the lid is immobile in relation to the container when opening and closing, between Lids and containers seals against dust and moisture and, if necessary, additives be laid to increase explosion protection. The wear and tear of the coatings on explosion-proof surfaces can be kept negligibly small in practice with this closure.

Since when closing the lid, the locking pieces with their legs on the flanges of the lid and Containers run perpendicular to these, the path of the friction surfaces when opening and closing is the same Leg width (~ 10 mm), d. H. many times smaller than with bayonet covers. The closure pieces are not assigned by the overall unevenness of the Loaded flanges of lids and containers.

For this reason, mechanical wear is almost completely negligible in practice (according to 5000 openings-closings results in 0.05 mm wear).

If actually with continuous stress as a result of abrasion of parts of the closure as well as as a result deformation of the closure parts due to explosions a certain increase in the game between the associated flanges of the lid and container compared to the prescribed game should occur, this can be done by simply replacing the lever with the lock according to the invention Closures are eliminated by new ones.

An overhaul of the lock can also be made by the fact that the levers to neui Places are moved in which they act on fishing before they have not yet acted on them were hit.

For this purpose 3 sheets of drawings

2

Claims (1)

it75 008 Claim: Flange quick release for lids of containers with a certain gap between Lid and container must not be exceeded, especially for explosion-proof devices Sections of the lid and container flange U-shaped comprehensive closure pieces that are pivotably articulated on the lid or container, the touching inner surfaces the legs of the locking pieces and the outer surfaces of the flanges are parallel and flat, characterized in that the closure gap each one arm one by one on the lid or container at right angles to the flange planes arranged axis and pivotable form axially movable two-armed lever (1), the inner surface of a U-leg in open and closed position the outer surface of the; its adjacent flange is at least partially covered by silage, while the inner surface of the other U-leg faces the axis of rotation Corner has a rounding and that the lever (1, 17, 24) by means of adjusting means acting on these in the form of a control ring (13) or pull or push tabs (27, 28) over a common one Actuator (14,15,16) simultaneously from the open position to the closed position and vice versa are adjustable.